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diff --git a/libxmount/libxmount.c b/libxmount/libxmount.c
index 2f9b741..90b166b 100644
--- a/libxmount/libxmount.c
+++ b/libxmount/libxmount.c
@@ -1,213 +1,220 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <errno.h>
#include <stdarg.h>
#include <string.h>
#include "libxmount.h"
#include "../src/macros.h"
+#define LOG_WARNING(...) { \
+ LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
+}
+#define LOG_ERROR(...) { \
+ LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
+}
+
/*
* XmountLib_SplitLibParams
*/
int XmountLib_SplitLibParams(char *p_params,
uint32_t *p_ret_opts_count,
pts_LibXmountOptions **ppp_ret_opt)
{
pts_LibXmountOptions p_opts=NULL;
pts_LibXmountOptions *pp_opts=NULL;
uint32_t params_len;
uint32_t opts_count=0;
uint32_t sep_pos=0;
char *p_buf=p_params;
if(p_params==NULL) return 0;
// Get params length
params_len=strlen(p_params);
// Return if no params specified
if(params_len==0) {
*ppp_ret_opt=NULL;
p_ret_opts_count=0;
return 1;
}
// Split params
while(*p_buf!='\0') {
XMOUNT_MALLOC(p_opts,pts_LibXmountOptions,sizeof(ts_LibXmountOptions));
p_opts->valid=0;
#define FREE_PP_OPTS() { \
if(pp_opts!=NULL) { \
for(uint32_t i=0;i<opts_count;i++) free(pp_opts[i]); \
free(pp_opts); \
} \
}
// Search next assignment operator
sep_pos=0;
while(p_buf[sep_pos]!='\0' && p_buf[sep_pos]!='=') sep_pos++;
if(sep_pos==0 || p_buf[sep_pos]=='\0') {
LOG_ERROR("Library parameter '%s' is missing an assignment operator!\n",
p_buf);
free(p_opts);
FREE_PP_OPTS();
return 0;
}
// Save option key
XMOUNT_STRNSET(p_opts->p_key,p_buf,sep_pos);
p_buf+=(sep_pos+1);
// Search next separator
sep_pos=0;
while(p_buf[sep_pos]!='\0' && p_buf[sep_pos]!=',') sep_pos++;
if(sep_pos==0) {
LOG_ERROR("Library parameter '%s' is not of format key=value!\n",
p_opts->p_key);
free(p_opts->p_key);
free(p_opts);
FREE_PP_OPTS();
return 0;
}
// Save option value
XMOUNT_STRNSET(p_opts->p_value,p_buf,sep_pos);
p_buf+=sep_pos;
LIBXMOUNT_LOG_DEBUG("Extracted library option: '%s' = '%s'\n",
p_opts->p_key,
p_opts->p_value);
#undef FREE_PP_OPTS
// Add current option to return array
XMOUNT_REALLOC(pp_opts,
pts_LibXmountOptions*,
sizeof(pts_LibXmountOptions)*(opts_count+1));
pp_opts[opts_count++]=p_opts;
// If we're not at the end of p_params, skip over separator for next run
if(*p_buf!='\0') p_buf++;
}
LIBXMOUNT_LOG_DEBUG("Extracted a total of %" PRIu32 " library options\n",
opts_count);
*p_ret_opts_count=opts_count;
*ppp_ret_opt=pp_opts;
return 1;
}
/*
* LogMessage
*/
void LogMessage(char *p_msg_type,
char *p_calling_fun,
int line,
char *p_msg,
...)
{
va_list var_list;
// Print message "header"
printf("%s: %s@%u : ",p_msg_type,p_calling_fun,line);
// Print message with variable parameters
va_start(var_list,p_msg);
vprintf(p_msg,var_list);
va_end(var_list);
}
/*
* StrToInt32
*/
int32_t StrToInt32(const char *p_value, int *p_ok) {
long int num;
char *p_tail;
errno=0;
num=strtol(p_value,&p_tail,0);
if(errno==ERANGE || *p_tail!='\0' || num<INT32_MIN || num>INT32_MAX) {
*p_ok=0;
return 0;
}
*p_ok=1;
return (int32_t)num;
}
/*
* StrToUint32
*/
uint32_t StrToUint32(const char *p_value, int *p_ok) {
unsigned long int num;
char *p_tail;
errno=0;
num=strtoul(p_value,&p_tail,0);
if(errno==ERANGE || *p_tail!='\0' || num>UINT32_MAX) {
*p_ok=0;
return 0;
}
*p_ok=1;
return (uint32_t)num;
}
/*
* StrToInt64
*/
int64_t StrToInt64(const char *p_value, int *p_ok) {
long long int num;
char *p_tail;
errno=0;
num=strtoll(p_value,&p_tail,0);
if(errno==ERANGE || *p_tail!='\0' || num<INT64_MIN || num>INT64_MAX) {
*p_ok=0;
return 0;
}
*p_ok=1;
return (int64_t)num;
}
/*
* StrToUint64
*/
uint64_t StrToUint64(const char *p_value, int *p_ok) {
unsigned long long int num;
char *p_tail;
errno=0;
num=strtoull(p_value,&p_tail,0);
if(errno==ERANGE || *p_tail!='\0' || num>UINT64_MAX) {
*p_ok=0;
return 0;
}
*p_ok=1;
return (uint64_t)num;
}
diff --git a/src/xmount.c b/src/xmount.c
index 08aba17..630228f 100755
--- a/src/xmount.c
+++ b/src/xmount.c
@@ -1,1934 +1,1762 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* xmount is a small tool to "fuse mount" various harddisk image formats as dd, *
* vdi, vhd or vmdk files and enable virtual write access to them. *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <inttypes.h> // For PRI*
#include <errno.h>
#include <dlfcn.h> // For dlopen, dlclose, dlsym
#include <dirent.h> // For opendir, readdir, closedir
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h> // For fstat
#include <sys/types.h>
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h> // For SEEK_* ??
#endif
#if !defined(__APPLE__) && defined(HAVE_GRP_H) && defined(HAVE_PWD_H)
#include <grp.h> // For getgrnam, struct group
#include <pwd.h> // For getpwuid, struct passwd
#endif
#include <pthread.h>
#include <time.h> // For time
#include "xmount.h"
#include "xmount_fuse.h"
#include "md5.h"
#include "macros.h"
#include "../libxmount/libxmount.h"
#define XMOUNT_COPYRIGHT_NOTICE \
"xmount v%s Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu>"
#define LOG_WARNING(...) { \
LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
}
#define LOG_ERROR(...) { \
LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
}
#define LOG_DEBUG(...) { \
LIBXMOUNT_LOG_DEBUG(glob_xmount.debug,__VA_ARGS__); \
}
#define HASH_AMOUNT (1024*1024)*10 // Amount of data used to construct a
// "unique" hash for every input image
// (10MByte)
/*******************************************************************************
* Forward declarations
******************************************************************************/
/*
* Misc
*/
-static void InitResources();
+static int InitResources();
static void FreeResources();
static void PrintUsage(char*);
static void CheckFuseSettings();
static int ParseCmdLine(const int, char**);
static int ExtractOutputFileNames(char*);
static int CalculateInputImageHash(uint64_t*, uint64_t*);
/*
* Info file
*/
static int InitInfoFile();
/*
* Lib related
*/
static int LoadLibs();
-static int FindInputLib(pts_InputImage);
static int FindMorphingLib();
static int FindOutputLib();
-static int SplitLibraryParameters(char*, uint32_t*, pts_LibXmountOptions**);
/*
* Functions exported to LibXmount_Morphing
*/
static int LibXmount_Morphing_ImageCount(uint64_t*);
static int LibXmount_Morphing_Size(uint64_t, uint64_t*);
static int LibXmount_Morphing_Read(uint64_t, char*, off_t, size_t, size_t*);
/*
* Functions exported to LibXmount_Output
*/
static int LibXmount_Output_Size(uint64_t*);
static int LibXmount_Output_Read(char*, off_t, size_t, size_t*);
static int LibXmount_Output_Write(char*, off_t, size_t, size_t*);
/*******************************************************************************
* Helper functions
******************************************************************************/
//! Print usage instructions (cmdline options etc..)
/*!
* \param p_prog_name Program name (argv[0])
*/
static void PrintUsage(char *p_prog_name) {
char *p_buf;
int first;
int ret;
printf("\n" XMOUNT_COPYRIGHT_NOTICE "\n",XMOUNT_VERSION);
printf("\nUsage:\n");
printf(" %s [fopts] <xopts> <mntp>\n\n",p_prog_name);
printf("Options:\n");
printf(" fopts:\n");
printf(" -d : Enable FUSE's and xmount's debug mode.\n");
printf(" -h : Display this help message.\n");
printf(" -s : Run single threaded.\n");
printf(" -o no_allow_other : Disable automatic addition of FUSE's "
"allow_other option.\n");
printf(" -o <fopts> : Specify fuse mount options. Will also disable "
"automatic addition of FUSE's allow_other option!\n");
printf("\n");
printf(" xopts:\n");
printf(" --cache <cfile> : Enable virtual write support.\n");
printf(" <cfile> specifies the cache file to use.\n");
printf(" --in <itype> <ifile> : Input image format and source file(s). "
"May be specified multiple times.\n");
printf(" <itype> can be ");
+#define PRINTUSAGE__LIST_SUPP_LIB_TYPES(fun,handle,ret_ok) do { \
+ first=1; \
+ if(fun(handle,&p_buf)==ret_ok) { \
+ while(*p_buf!='\0') { \
+ if(first==1) { \
+ printf("\"%s\"",p_buf); \
+ first=0; \
+ } else printf(", \"%s\"",p_buf); \
+ p_buf+=(strlen(p_buf)+1); \
+ } \
+ free(p_buf); \
+ } \
+ printf(".\n"); \
+} while(0)
+
// List supported input formats
- first=1;
- if(XmountInput_GetSupportedFormats(glob_xmount.h_input,
- &p_buf)==e_XmountInput_Error_None)
- {
- while(*p_buf!='\0') {
- if(first==1) {
- printf("\"%s\"",p_buf);
- first=0;
- } else printf(", \"%s\"",p_buf);
- p_buf+=(strlen(p_buf)+1);
- }
- free(p_buf);
- }
- printf(".\n");
+ PRINTUSAGE__LIST_SUPP_LIB_TYPES(XmountInput_GetSupportedFormats,
+ glob_xmount.h_input,
+ e_XmountInput_Error_None);
printf(" <ifile> specifies the source file. If your image is split into "
"multiple files, you have to specify them all!\n");
printf(" --inopts <iopts> : Specify input library specific options.\n");
printf(" <iopts> specifies a comma separated list of key=value options. "
"See below for details.\n");
printf(" --info : Print out infos about used compiler and libraries.\n");
printf(" --morph <mtype> : Morphing function to apply to input image(s). "
"If not specified, defaults to \"combine\".\n");
printf(" <mtype> can be ");
// List supported morphing functions
- first=1;
- for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
- p_buf=glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types;
- while(*p_buf!='\0') {
- if(first==1) {
- printf("\"%s\"",p_buf);
- first=0;
- } else printf(", \"%s\"",p_buf);
- p_buf+=(strlen(p_buf)+1);
- }
- }
- printf(".\n");
+ PRINTUSAGE__LIST_SUPP_LIB_TYPES(XmountMorphing_GetSupportedTypes,
+ glob_xmount.h_morphing,
+ e_XmountMorphError_None);
printf(" --morphopts <mopts> : Specify morphing library specific "
"options.\n");
printf(" <mopts> specifies a comma separated list of key=value options. "
"See below for details.\n");
printf(" --offset <off> : Move the output image data start <off> bytes "
"into the input image(s).\n");
printf(" --out <otype> : Output image format. If not specified, "
"defaults to ");
#ifdef __APPLE__
printf("\"dmg\".\n");
#else
printf("\"raw\".\n");
#endif
printf(" <otype> can be ");
// List supported output formats
first=1;
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
p_buf=glob_xmount.output.pp_libs[i]->p_supported_output_formats;
while(*p_buf!='\0') {
if(first==1) {
printf("\"%s\"",p_buf);
first=0;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
}
printf(".\n");
printf(" --outopts <oopts> : Specify output library specific "
"options.\n");
printf(" --owcache <file> : Same as --cache <file> but overwrites "
"existing cache file.\n");
printf(" --sizelimit <size> : The data end of input image(s) is set to no "
"more than <size> bytes after the data start.\n");
printf(" --version : Same as --info.\n");
printf("\n");
printf(" mntp:\n");
printf(" Mount point where output image should be located.\n");
printf("\n");
printf("Infos:\n");
printf(" * One --in option and a mount point are mandatory!\n");
printf(" * If you specify --in multiple times, data from all images is "
"morphed into one output image using the specified morphing "
"function.\n");
printf(" * For VMDK emulation, you have to uncomment \"user_allow_other\" "
"in /etc/fuse.conf or run xmount as root.\n");
printf("\n");
printf("Input / Morphing / Output library specific options:\n");
printf(" Input / Morphing libraries might support an own set of "
"options to configure / tune their behaviour.\n");
printf(" Libraries supporting this feature (if any) and their "
"options are listed below.\n");
printf("\n");
+#define PRINTUSAGE__LIST_LIB_OPT_HELP(fun,handle,ret_ok) do { \
+ if(fun(handle,&p_buf)==ret_ok) { \
+ printf("%s",p_buf); \
+ free(p_buf); \
+ } \
+} while(0)
+
// List input, morphing and output lib options
- if(XmountInput_GetOptionsHelpText(glob_xmount.h_input,
- &p_buf)==e_XmountInput_Error_None)
- {
- printf("%s",p_buf);
- free(p_buf);
- }
- for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
- ret=glob_xmount.morphing.pp_libs[i]->
- lib_functions.OptionsHelp((const char**)&p_buf);
- if(ret!=0) {
- LOG_ERROR("Unable to get options help for library '%s': %s!\n",
- glob_xmount.morphing.pp_libs[i]->p_name,
- glob_xmount.morphing.pp_libs[i]->
- lib_functions.GetErrorMessage(ret));
- }
- if(p_buf==NULL) continue;
- printf(" - %s\n",glob_xmount.morphing.pp_libs[i]->p_name);
- printf("%s",p_buf);
- printf("\n");
- }
+ PRINTUSAGE__LIST_LIB_OPT_HELP(XmountInput_GetOptionsHelpText,
+ glob_xmount.h_input,
+ e_XmountInput_Error_None);
+ PRINTUSAGE__LIST_LIB_OPT_HELP(XmountMorphing_GetOptionsHelpText,
+ glob_xmount.h_morphing,
+ e_XmountMorphError_None);
+
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
ret=glob_xmount.output.pp_libs[i]->
lib_functions.OptionsHelp((const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get options help for library '%s': %s!\n",
glob_xmount.output.pp_libs[i]->p_name,
glob_xmount.output.pp_libs[i]->
lib_functions.GetErrorMessage(ret));
}
if(p_buf==NULL) continue;
printf(" - %s\n",glob_xmount.output.pp_libs[i]->p_name);
printf("%s",p_buf);
printf("\n");
}
+
+#undef PRINTUSAGE__LIST_LIB_OPT_HELP
+#undef PRINTUSAGE__LIST_SUPPORTED_LIB_OPTS
+
}
//! Check fuse settings
/*!
* Check if FUSE allows us to pass the -o allow_other parameter. This only works
* if we are root or user_allow_other is set in /etc/fuse.conf.
*
* In addition, this function also checks if the user is member of the fuse
* group which is generally needed to use fuse at all.
*/
static void CheckFuseSettings() {
#if !defined(__APPLE__) && defined(HAVE_GRP_H) && defined(HAVE_PWD_H)
struct group *p_group;
struct passwd *p_passwd;
#endif
int found;
FILE *h_fuse_conf;
char line[256];
glob_xmount.may_set_fuse_allow_other=FALSE;
if(geteuid()==0) {
// Running as root, there should be no problems
glob_xmount.may_set_fuse_allow_other=TRUE;
return;
}
#if !defined(__APPLE__) && defined(HAVE_GRP_H) && defined(HAVE_PWD_H)
// Check if a fuse group exists and if so, make sure user is a member of it.
// Makes only sense on Linux because as far as I know osxfuse has no own group
p_group=getgrnam("fuse");
if(p_group!=NULL) {
// Get effective user name
p_passwd=getpwuid(geteuid());
if(p_passwd==NULL) {
printf("\nWARNING: Unable to determine your effective user name. If "
"mounting works, you can ignore this message.\n\n");
return;
}
// Check if user is member of fuse group
found=FALSE;
while(*(p_group->gr_mem)!=NULL) {
if(strcmp(*(p_group->gr_mem),p_passwd->pw_name)==0) {
found=TRUE;
break;
}
p_group->gr_mem++;
}
if(found==FALSE) {
printf("\nWARNING: You are not a member of the \"fuse\" group. This will "
"prevent you from mounting images using xmount. Please add "
"yourself to the \"fuse\" group using the command "
"\"sudo usermod -a -G fuse %s\" and reboot your system or "
"execute xmount as root.\n\n",
p_passwd->pw_name);
return;
}
} else {
printf("\nWARNING: Your system does not seem to have a \"fuse\" group. If "
"mounting works, you can ignore this message.\n\n");
}
#endif
// Read FUSE's config file /etc/fuse.conf and check for set user_allow_other
h_fuse_conf=(FILE*)FOPEN("/etc/fuse.conf","r");
if(h_fuse_conf!=NULL) {
// Search conf file for set user_allow_others
found=FALSE;
while(fgets(line,sizeof(line),h_fuse_conf)!=NULL) {
// TODO: This works as long as there is no other parameter beginning with
// "user_allow_other" :)
if(strncmp(line,"user_allow_other",16)==0) {
found=TRUE;
break;
}
}
fclose(h_fuse_conf);
if(found==TRUE) {
glob_xmount.may_set_fuse_allow_other=TRUE;
} else {
printf("\nWARNING: FUSE will not allow other users nor root to access "
"your virtual harddisk image. To change this behavior, please "
"add \"user_allow_other\" to /etc/fuse.conf or execute xmount "
"as root.\n\n");
}
} else {
printf("\nWARNING: Unable to open /etc/fuse.conf. If mounting works, you "
"can ignore this message. If you encounter issues, please create "
"the file and add a single line containing the string "
"\"user_allow_other\" or execute xmount as root.\n\n");
return;
}
}
//! Parse command line options
/*!
* \param argc Number of cmdline params
* \param pp_argv Array containing cmdline params
* \return TRUE on success, FALSE on error
*/
static int ParseCmdLine(const int argc, char **pp_argv) {
int i=1;
int FuseMinusOControl=TRUE;
int FuseAllowOther=TRUE;
int first;
uint64_t buf;
char *p_buf;
char **pp_buf;
int ret;
te_XmountInput_Error input_ret=e_XmountInput_Error_None;
+ te_XmountMorphError morph_ret=e_XmountMorphError_None;
// add pp_argv[0] to FUSE's argv
XMOUNT_MALLOC(glob_xmount.pp_fuse_argv,char**,sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[0],pp_argv[0]);
glob_xmount.fuse_argc=1;
// Parse options
while(i<argc && *pp_argv[i]=='-') {
if(strlen(pp_argv[i])>1 && *(pp_argv[i]+1)!='-') {
// Options beginning with one - are mostly FUSE specific
if(strcmp(pp_argv[i],"-d")==0) {
// Enable FUSE's and xmount's debug mode
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
pp_argv[i])
glob_xmount.fuse_argc++;
glob_xmount.debug=TRUE;
+ input_ret=XmountInput_EnableDebugging(glob_xmount.h_input);
+ if(input_ret!=e_XmountInput_Error_None) {
+ LOG_ERROR("Unable to enable input debugging: Error code %u!\n",
+ input_ret);
+ return FALSE;
+ }
} else if(strcmp(pp_argv[i],"-h")==0) {
// Print help message
PrintUsage(pp_argv[0]);
exit(0);
} else if(strcmp(pp_argv[i],"-o")==0) {
// Next parameter specifies fuse mount options
if((i+1)<argc) {
i++;
// As the user specified the -o option, we assume he knows what he is
// doing. We won't append allow_other automatically. And we allow him
// to disable allow_other by passing a single "-o no_allow_other"
// which won't be passed to FUSE as it is xmount specific.
if(strcmp(pp_argv[i],"no_allow_other")!=0) {
glob_xmount.fuse_argc+=2;
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
glob_xmount.fuse_argc*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-2],
pp_argv[i-1]);
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
pp_argv[i]);
FuseMinusOControl=FALSE;
} else FuseAllowOther=FALSE;
} else {
LOG_ERROR("Couldn't parse fuse mount options!\n")
return FALSE;
}
} else if(strcmp(pp_argv[i],"-s")==0) {
// Enable FUSE's single threaded mode
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
pp_argv[i]);
glob_xmount.fuse_argc++;
} else if(strcmp(pp_argv[i],"-V")==0) {
// Display FUSE version info
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
pp_argv[i]);
glob_xmount.fuse_argc++;
} else {
LOG_ERROR("Unknown command line option \"%s\"\n",pp_argv[i]);
return FALSE;
}
} else {
// Options beginning with -- are xmount specific
if(strcmp(pp_argv[i],"--cache")==0 /*|| strcmp(pp_argv[i],"--rw")==0*/) {
// Emulate writable access to mounted image
// Next parameter must be cache file to read/write changes from/to
if((i+1)<argc) {
i++;
XMOUNT_STRSET(glob_xmount.args.p_cache_file,pp_argv[i])
glob_xmount.output.writable=TRUE;
} else {
LOG_ERROR("You must specify a cache file!\n")
return FALSE;
}
LOG_DEBUG("Enabling virtual write support using cache file \"%s\"\n",
glob_xmount.args.p_cache_file)
} else if(strcmp(pp_argv[i],"--in")==0) {
// Input image format and source files
if((i+2)<argc) {
i++;
// Save format
p_buf=pp_argv[i];
// Parse input image filename(s) and save to temporary array
i++;
buf=0;
pp_buf=NULL;
while(i<(argc-1) && strncmp(pp_argv[i],"--",2)!=0) {
buf++;
XMOUNT_REALLOC(pp_buf,char**,buf*sizeof(char*));
pp_buf[buf-1]=pp_argv[i];
i++;
}
i--;
if(buf==0) {
LOG_ERROR("No input files specified for \"--in %s\"!\n",p_buf);
return FALSE;
}
// Add input image
if((input_ret=XmountInput_AddImage(glob_xmount.h_input,
p_buf,
buf,
(const char**)pp_buf)
)!=e_XmountInput_Error_None)
{
LOG_ERROR("Unable to load input image: Error code %u!\n",input_ret);
XMOUNT_FREE(pp_buf);
return FALSE;
}
// Save first image path to generate fsname later on
if(glob_xmount.p_first_input_image_name==NULL) {
XMOUNT_STRSET(glob_xmount.p_first_input_image_name,
pp_buf[0]);
}
} else {
LOG_ERROR("You must specify an input image format and source file!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--inopts")==0) {
// Set input lib options
if((i+1)<argc) {
i++;
input_ret=XmountInput_SetOptions(glob_xmount.h_input,pp_argv[i]);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to parse input library options: Error code %u!\n",
input_ret);
return FALSE;
}
} else {
LOG_ERROR("You must specify special options!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--morph")==0) {
// Set morphing lib to use
if((i+1)<argc) {
i++;
- if(glob_xmount.morphing.p_morph_type==NULL) {
- XMOUNT_STRSET(glob_xmount.morphing.p_morph_type,pp_argv[i]);
- } else {
- LOG_ERROR("You can only specify --morph once!")
+ morph_ret=XmountMorphing_SetType(glob_xmount.h_morphing,
+ pp_argv[i]);
+ if(morph_ret!=e_XmountMorphError_None) {
+ LOG_ERROR("Unable to set morphing type: Error code %u!\n",
+ morph_ret);
return FALSE;
}
} else {
LOG_ERROR("You must specify morphing type!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--morphopts")==0) {
// Set morphing lib options
if((i+1)<argc) {
i++;
- if(glob_xmount.morphing.pp_lib_params==NULL) {
- if(SplitLibraryParameters(pp_argv[i],
- &(glob_xmount.morphing.lib_params_count),
- &(glob_xmount.morphing.pp_lib_params)
- )==FALSE)
- {
- LOG_ERROR("Unable to parse morphing library options '%s'!\n",
- pp_argv[i]);
- return FALSE;
- }
- } else {
- LOG_ERROR("You can only specify --morphopts once!")
+ morph_ret=XmountMorphing_SetOptions(glob_xmount.h_morphing,
+ pp_argv[i]);
+ if(morph_ret!=e_XmountMorphError_None) {
+ LOG_ERROR("Unable to parse morphing library options: "
+ "Error code %u!\n",
+ morph_ret);
return FALSE;
}
} else {
LOG_ERROR("You must specify special morphing lib params!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--offset")==0) {
// Set input image offset
if((i+1)<argc) {
i++;
buf=StrToUint64(pp_argv[i],&ret);
if(ret==0) {
LOG_ERROR("Unable to convert '%s' to a number!\n",pp_argv[i]);
return FALSE;
}
input_ret=XmountInput_SetInputOffset(glob_xmount.h_input,buf);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to set input offset: Error code %u!\n",input_ret);
return FALSE;
}
} else {
LOG_ERROR("You must specify an offset!\n")
return FALSE;
}
} else if(strcmp(pp_argv[i],"--out")==0) {
// Set output lib to use
if((i+1)<argc) {
i++;
if(glob_xmount.output.p_output_format==NULL) {
XMOUNT_STRSET(glob_xmount.output.p_output_format,pp_argv[i]);
} else {
LOG_ERROR("You can only specify --out once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify an output format!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--outopts")==0) {
// Set output lib options
if((i+1)<argc) {
i++;
if(glob_xmount.output.pp_lib_params==NULL) {
- if(SplitLibraryParameters(pp_argv[i],
- &(glob_xmount.output.lib_params_count),
- &(glob_xmount.output.pp_lib_params)
- )==FALSE)
+ if(XmountLib_SplitLibParams(pp_argv[i],
+ &(glob_xmount.output.lib_params_count),
+ &(glob_xmount.output.pp_lib_params)
+ )==FALSE)
{
LOG_ERROR("Unable to parse output library options '%s'!\n",
pp_argv[i]);
return FALSE;
}
} else {
LOG_ERROR("You can only specify --outopts once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify special output lib params!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--owcache")==0) {
// Enable writable access to mounted image and overwrite existing cache
// Next parameter must be cache file to read/write changes from/to
if((i+1)<argc) {
i++;
XMOUNT_STRSET(glob_xmount.args.p_cache_file,pp_argv[i])
glob_xmount.output.writable=TRUE;
glob_xmount.args.overwrite_cache=TRUE;
} else {
LOG_ERROR("You must specify a cache file!\n")
return FALSE;
}
LOG_DEBUG("Enabling virtual write support overwriting cache file %s\n",
glob_xmount.args.p_cache_file)
} else if(strcmp(pp_argv[i],"--sizelimit")==0) {
// Set input image size limit
if((i+1)<argc) {
i++;
buf=StrToUint64(pp_argv[i],&ret);
if(ret==0) {
LOG_ERROR("Unable to convert '%s' to a number!\n",pp_argv[i]);
return FALSE;
}
input_ret=XmountInput_SetInputSizeLimit(glob_xmount.h_input,buf);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to set input size limit: Error code %u!\n",
input_ret);
return FALSE;
}
} else {
LOG_ERROR("You must specify a size limit!\n")
return FALSE;
}
} else if(strcmp(pp_argv[i],"--version")==0 ||
strcmp(pp_argv[i],"--info")==0)
{
// Print xmount info
printf(XMOUNT_COPYRIGHT_NOTICE "\n\n",XMOUNT_VERSION);
#ifdef __GNUC__
printf(" compile timestamp: %s %s\n",__DATE__,__TIME__);
printf(" gcc version: %s\n",__VERSION__);
#endif
- printf(" loaded input libraries:\n");
- input_ret=XmountInput_GetLibsInfoText(glob_xmount.h_input,&p_buf);
- if(p_buf==NULL || input_ret!=e_XmountInput_Error_None) {
- LOG_ERROR("Unable to get input library infos: Error code %u!\n",
- input_ret);
- return FALSE;
- }
- printf("%s",p_buf);
- XMOUNT_FREE(p_buf);
- printf(" loaded morphing libraries:\n");
- for(uint32_t ii=0;ii<glob_xmount.morphing.libs_count;ii++) {
- printf(" - %s supporting ",
- glob_xmount.morphing.pp_libs[ii]->p_name);
- p_buf=glob_xmount.morphing.pp_libs[ii]->p_supported_morphing_types;
- first=TRUE;
- while(*p_buf!='\0') {
- if(first) {
- printf("\"%s\"",p_buf);
- first=FALSE;
- } else printf(", \"%s\"",p_buf);
- p_buf+=(strlen(p_buf)+1);
- }
- printf("\n");
- }
+
+#define PARSECMDLINE__PRINT_LOADED_LIBINFO(text,libret,fun,handle,err_ok) do { \
+ printf(text); \
+ libret=fun(handle,&p_buf); \
+ if(p_buf==NULL || libret!=err_ok) { \
+ LOG_ERROR("Unable to get library infos: Error code %u!\n",libret); \
+ return FALSE; \
+ } \
+ printf("%s",p_buf); \
+ XMOUNT_FREE(p_buf); \
+} while(0)
+
+ PARSECMDLINE__PRINT_LOADED_LIBINFO(" loaded input libraries:\n",
+ input_ret,
+ XmountInput_GetLibsInfoText,
+ glob_xmount.h_input,
+ e_XmountInput_Error_None);
+ PARSECMDLINE__PRINT_LOADED_LIBINFO(" loaded morphing libraries:\n",
+ morph_ret,
+ XmountMorphing_GetLibsInfoText,
+ glob_xmount.h_morphing,
+ e_XmountMorphError_None);
+
printf(" loaded output libraries:\n");
for(uint32_t ii=0;ii<glob_xmount.output.libs_count;ii++) {
printf(" - %s supporting ",
glob_xmount.output.pp_libs[ii]->p_name);
p_buf=glob_xmount.output.pp_libs[ii]->p_supported_output_formats;
first=TRUE;
while(*p_buf!='\0') {
if(first) {
printf("\"%s\"",p_buf);
first=FALSE;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
printf("\n");
}
printf("\n");
exit(0);
} else {
LOG_ERROR("Unknown command line option \"%s\"\n",pp_argv[i]);
return FALSE;
}
}
i++;
}
// Extract mountpoint
if(i==(argc-1)) {
XMOUNT_STRSET(glob_xmount.p_mountpoint,pp_argv[argc-1])
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
glob_xmount.p_mountpoint);
glob_xmount.fuse_argc++;
} else {
LOG_ERROR("No mountpoint specified!\n")
return FALSE;
}
if(FuseMinusOControl==TRUE) {
// We control the -o flag, set subtype, fsname and allow_other options
glob_xmount.fuse_argc+=2;
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
glob_xmount.fuse_argc*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-2],"-o");
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
"subtype=xmount");
if(glob_xmount.p_first_input_image_name!=NULL) {
// Set name of first source file as fsname
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
",fsname='");
// If possible, use full path
p_buf=realpath(glob_xmount.p_first_input_image_name,NULL);
if(p_buf==NULL) {
XMOUNT_STRSET(p_buf,glob_xmount.p_first_input_image_name);
}
// Make sure fsname does not include some forbidden chars
for(uint32_t i=0;i<strlen(p_buf);i++) {
if(p_buf[i]=='\'') p_buf[i]='_';
}
// Set fsname
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
p_buf);
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
"'");
free(p_buf);
}
if(FuseAllowOther==TRUE) {
// Add "allow_other" option if allowed
if(glob_xmount.may_set_fuse_allow_other) {
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
",allow_other");
}
}
}
+#undef PARSECMDLINE__PRINT_LOADED_LIBINFO
+
return TRUE;
}
//! Extract output file name from input image name
/*!
* \param p_orig_name Name of input image (may include a path)
* \return TRUE on success, FALSE on error
*/
static int ExtractOutputFileNames(char *p_orig_name) {
char *tmp;
// Truncate any leading path
tmp=strrchr(p_orig_name,'/');
if(tmp!=NULL) p_orig_name=tmp+1;
// Extract file extension
tmp=strrchr(p_orig_name,'.');
// Set leading '/'
XMOUNT_STRSET(glob_xmount.output.p_virtual_image_path,"/");
XMOUNT_STRSET(glob_xmount.output.p_info_path,"/");
// Copy filename
if(tmp==NULL) {
// Input image filename has no extension
XMOUNT_STRAPP(glob_xmount.output.p_virtual_image_path,p_orig_name);
XMOUNT_STRAPP(glob_xmount.output.p_info_path,p_orig_name);
XMOUNT_STRAPP(glob_xmount.output.p_info_path,".info");
} else {
XMOUNT_STRNAPP(glob_xmount.output.p_virtual_image_path,p_orig_name,
strlen(p_orig_name)-strlen(tmp));
XMOUNT_STRNAPP(glob_xmount.output.p_info_path,p_orig_name,
strlen(p_orig_name)-strlen(tmp));
XMOUNT_STRAPP(glob_xmount.output.p_info_path,".info");
}
// Add virtual file extensions
// TODO: Get from output lib and add
//XMOUNT_STRAPP(glob_xmount.output.p_virtual_image_path,".dd");
LOG_DEBUG("Set virtual image name to \"%s\"\n",
glob_xmount.output.p_virtual_image_path);
LOG_DEBUG("Set virtual image info name to \"%s\"\n",
glob_xmount.output.p_info_path);
return TRUE;
}
//! Calculates an MD5 hash of the first HASH_AMOUNT bytes of the input image
/*!
* \param p_hash_low Pointer to the lower 64 bit of the hash
* \param p_hash_high Pointer to the higher 64 bit of the hash
* \return TRUE on success, FALSE on error
*/
static int CalculateInputImageHash(uint64_t *p_hash_low,
uint64_t *p_hash_high)
{
char hash[16];
md5_state_t md5_state;
char *p_buf;
int ret;
size_t read_data;
XMOUNT_MALLOC(p_buf,char*,HASH_AMOUNT*sizeof(char));
ret=ReadMorphedImageData(p_buf,0,HASH_AMOUNT,&read_data);
if(ret!=TRUE || read_data==0) {
LOG_ERROR("Couldn't read data from morphed image file!\n")
free(p_buf);
return FALSE;
}
// Calculate MD5 hash
md5_init(&md5_state);
md5_append(&md5_state,(const md5_byte_t*)p_buf,read_data);
md5_finish(&md5_state,(md5_byte_t*)hash);
// Convert MD5 hash into two 64bit integers
*p_hash_low=*((uint64_t*)hash);
*p_hash_high=*((uint64_t*)(hash+8));
free(p_buf);
return TRUE;
}
//! Create info file
/*!
* \return TRUE on success, FALSE on error
*/
static int InitInfoFile() {
int ret;
- te_XmountInput_Error input_ret=e_XmountInput_Error_None;
char *p_buf;
+ te_XmountInput_Error input_ret=e_XmountInput_Error_None;
+ te_XmountMorphError morph_ret=e_XmountMorphError_None;
// Start with static input header
XMOUNT_MALLOC(glob_xmount.output.p_info_file,
char*,
strlen(IMAGE_INFO_INPUT_HEADER)+1);
strncpy(glob_xmount.output.p_info_file,
IMAGE_INFO_INPUT_HEADER,
strlen(IMAGE_INFO_INPUT_HEADER)+1);
+#define INITINFOFILE__GET_CONTENT(libret,fun,handle,err_ok,err_msg) do { \
+ libret=fun(handle,&p_buf); \
+ if(p_buf==NULL || libret!=err_ok) { \
+ LOG_ERROR(err_msg "Error code %u!\n",libret); \
+ return FALSE; \
+ } \
+ XMOUNT_STRAPP(glob_xmount.output.p_info_file,p_buf); \
+ XMOUNT_FREE(p_buf); \
+} while(0)
+
// Get and add infos from input lib(s)
- input_ret=XmountInput_GetInfoFileContent(glob_xmount.h_cache,&p_buf);
- if(p_buf==NULL || input_ret!=e_XmountInput_Error_None) {
- LOG_ERROR("Unable to get info file content for input image(s): "
- "Error code %u!\n",
- input_ret);
- return FALSE;
- }
- XMOUNT_STRAPP(glob_xmount.output.p_info_file,p_buf);
- XMOUNT_FREE(p_buf);
+ INITINFOFILE__GET_CONTENT(input_ret,
+ XmountInput_GetInfoFileContent,
+ glob_xmount.h_input,
+ e_XmountInput_Error_None,
+ "Unable to get info file content from input lib: ");
// Add static morphing header
XMOUNT_STRAPP(glob_xmount.output.p_info_file,IMAGE_INFO_MORPHING_HEADER);
// Get and add infos from morphing lib
- ret=glob_xmount.morphing.p_functions->
- GetInfofileContent(glob_xmount.morphing.p_handle,(const char**)&p_buf);
- if(ret!=0) {
- LOG_ERROR("Unable to get info file content from morphing lib: %s!\n",
- glob_xmount.morphing.p_functions->GetErrorMessage(ret));
- return FALSE;
- }
- if(p_buf!=NULL) {
- XMOUNT_STRAPP(glob_xmount.output.p_info_file,p_buf);
- glob_xmount.morphing.p_functions->FreeBuffer(p_buf);
- } else {
- XMOUNT_STRAPP(glob_xmount.output.p_info_file,"None\n");
- }
+ INITINFOFILE__GET_CONTENT(morph_ret,
+ XmountMorphing_GetInfoFileContent,
+ glob_xmount.h_morphing,
+ e_XmountMorphError_None,
+ "Unable to get info file content from morphing "
+ "lib: ");
+
+#undef INITINFOFILE__GET_CONTENT
return TRUE;
}
//! Load input / morphing libs
/*!
* \return TRUE on success, FALSE on error
*/
static int LoadLibs() {
DIR *p_dir=NULL;
struct dirent *p_dirent=NULL;
int base_library_path_len=0;
char *p_library_path=NULL;
void *p_libxmount=NULL;
- t_LibXmount_Morphing_GetApiVersion pfun_morphing_GetApiVersion;
- t_LibXmount_Morphing_GetSupportedTypes pfun_morphing_GetSupportedTypes;
- t_LibXmount_Morphing_GetFunctions pfun_morphing_GetFunctions;
t_LibXmount_Output_GetApiVersion pfun_output_GetApiVersion;
t_LibXmount_Output_GetSupportedFormats pfun_output_GetSupportedFormats;
t_LibXmount_Output_GetFunctions pfun_output_GetFunctions;
const char *p_supported_formats=NULL;
const char *p_buf;
uint32_t supported_formats_len=0;
uint32_t input_lib_count=0;
- pts_MorphingLib p_morphing_lib=NULL;
+ uint32_t morphing_lib_count=0;
pts_OutputLib p_output_lib=NULL;
te_XmountInput_Error input_ret=e_XmountInput_Error_None;
+ te_XmountMorphError morph_ret=e_XmountMorphError_None;
LOG_DEBUG("Searching for xmount libraries in '%s'.\n",
XMOUNT_LIBRARY_PATH);
// Open lib dir
p_dir=opendir(XMOUNT_LIBRARY_PATH);
if(p_dir==NULL) {
LOG_ERROR("Unable to access xmount library directory '%s'!\n",
XMOUNT_LIBRARY_PATH);
return FALSE;
}
// Construct base library path
base_library_path_len=strlen(XMOUNT_LIBRARY_PATH);
XMOUNT_STRSET(p_library_path,XMOUNT_LIBRARY_PATH);
if(XMOUNT_LIBRARY_PATH[base_library_path_len]!='/') {
base_library_path_len++;
XMOUNT_STRAPP(p_library_path,"/");
}
#define LIBXMOUNT_LOAD(path) { \
p_libxmount=dlopen(path,RTLD_NOW); \
if(p_libxmount==NULL) { \
LOG_ERROR("Unable to load input library '%s': %s!\n", \
path, \
dlerror()); \
continue; \
} \
}
#define LIBXMOUNT_LOAD_SYMBOL(name,pfun) { \
if((pfun=dlsym(p_libxmount,name))==NULL) { \
LOG_ERROR("Unable to load symbol '%s' from library '%s'!\n", \
name, \
p_library_path); \
dlclose(p_libxmount); \
p_libxmount=NULL; \
continue; \
} \
}
// Loop over lib dir
while((p_dirent=readdir(p_dir))!=NULL) {
LOG_DEBUG("Trying to load '%s'\n",p_dirent->d_name);
// Construct full path to found object
p_library_path=realloc(p_library_path,
base_library_path_len+strlen(p_dirent->d_name)+1);
if(p_library_path==NULL) {
LOG_ERROR("Couldn't allocate memory!\n");
exit(1);
}
strcpy(p_library_path+base_library_path_len,p_dirent->d_name);
if(strncmp(p_dirent->d_name,
XMOUNT_INPUT_LIBRARY_NAMING_SCHEME,
strlen(XMOUNT_INPUT_LIBRARY_NAMING_SCHEME))==0)
{
// Found possible input lib. Try to load it
input_ret=XmountInput_AddLibrary(glob_xmount.h_input,p_dirent->d_name);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to add input library '%s': Error code %u!\n",
p_dirent->d_name,
input_ret);
continue;
}
- } if(strncmp(p_dirent->d_name,"libxmount_morphing_",19)==0) {
+ } if(strncmp(p_dirent->d_name,
+ XMOUNT_MORPHING_LIBRARY_NAMING_SCHEME,
+ strlen(XMOUNT_MORPHING_LIBRARY_NAMING_SCHEME))==0)
+ {
// Found possible morphing lib. Try to load it
- LIBXMOUNT_LOAD(p_library_path);
-
- // Load library symbols
- LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetApiVersion",
- pfun_morphing_GetApiVersion);
-
- // Check library's API version
- if(pfun_morphing_GetApiVersion()!=LIBXMOUNT_MORPHING_API_VERSION) {
- LOG_DEBUG("Failed! Wrong API version.\n");
- LOG_ERROR("Unable to load morphing library '%s'. Wrong API version\n",
- p_library_path);
- dlclose(p_libxmount);
- continue;
- }
-
- LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetSupportedTypes",
- pfun_morphing_GetSupportedTypes);
- LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetFunctions",
- pfun_morphing_GetFunctions);
-
- // Construct new entry for our library list
- XMOUNT_MALLOC(p_morphing_lib,pts_MorphingLib,sizeof(ts_MorphingLib));
- // Initialize lib_functions structure to NULL
- memset(&(p_morphing_lib->lib_functions),
- 0,
- sizeof(ts_LibXmountMorphingFunctions));
-
- // Set name and handle
- XMOUNT_STRSET(p_morphing_lib->p_name,p_dirent->d_name);
- p_morphing_lib->p_lib=p_libxmount;
-
- // Get and set supported types
- p_supported_formats=pfun_morphing_GetSupportedTypes();
- supported_formats_len=0;
- p_buf=p_supported_formats;
- while(*p_buf!='\0') {
- supported_formats_len+=(strlen(p_buf)+1);
- p_buf+=(strlen(p_buf)+1);
- }
- supported_formats_len++;
- XMOUNT_MALLOC(p_morphing_lib->p_supported_morphing_types,
- char*,
- supported_formats_len);
- memcpy(p_morphing_lib->p_supported_morphing_types,
- p_supported_formats,
- supported_formats_len);
-
- // Get, set and check lib_functions
- pfun_morphing_GetFunctions(&(p_morphing_lib->lib_functions));
- if(p_morphing_lib->lib_functions.CreateHandle==NULL ||
- p_morphing_lib->lib_functions.DestroyHandle==NULL ||
- p_morphing_lib->lib_functions.Morph==NULL ||
- p_morphing_lib->lib_functions.Size==NULL ||
- p_morphing_lib->lib_functions.Read==NULL ||
- p_morphing_lib->lib_functions.OptionsHelp==NULL ||
- p_morphing_lib->lib_functions.OptionsParse==NULL ||
- p_morphing_lib->lib_functions.GetInfofileContent==NULL ||
- p_morphing_lib->lib_functions.GetErrorMessage==NULL ||
- p_morphing_lib->lib_functions.FreeBuffer==NULL)
- {
- LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
- p_dirent->d_name);
- free(p_morphing_lib->p_supported_morphing_types);
- free(p_morphing_lib->p_name);
- free(p_morphing_lib);
- dlclose(p_libxmount);
+ morph_ret=XmountMorphing_AddLibrary(glob_xmount.h_morphing,
+ p_dirent->d_name);
+ if(morph_ret!=e_XmountMorphError_None) {
+ LOG_ERROR("Unable to add morphing library '%s': Error code %u!\n",
+ p_dirent->d_name,
+ morph_ret);
continue;
}
-
- // Add entry to the input library list
- XMOUNT_REALLOC(glob_xmount.morphing.pp_libs,
- pts_MorphingLib*,
- sizeof(pts_MorphingLib)*
- (glob_xmount.morphing.libs_count+1));
- glob_xmount.morphing.pp_libs[glob_xmount.morphing.libs_count++]=
- p_morphing_lib;
-
- LOG_DEBUG("Morphing library '%s' loaded successfully\n",p_dirent->d_name);
} if(strncmp(p_dirent->d_name,"libxmount_output_",17)==0) {
// Found possible output lib. Try to load it
LIBXMOUNT_LOAD(p_library_path);
// Load library symbols
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Output_GetApiVersion",
pfun_output_GetApiVersion);
// Check library's API version
if(pfun_output_GetApiVersion()!=LIBXMOUNT_OUTPUT_API_VERSION) {
LOG_DEBUG("Failed! Wrong API version.\n");
LOG_ERROR("Unable to load output library '%s'. Wrong API version\n",
p_library_path);
dlclose(p_libxmount);
continue;
}
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Output_GetSupportedFormats",
pfun_output_GetSupportedFormats);
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Output_GetFunctions",
pfun_output_GetFunctions);
// Construct new entry for our library list
XMOUNT_MALLOC(p_output_lib,pts_OutputLib,sizeof(ts_OutputLib));
// Initialize lib_functions structure to NULL
memset(&(p_output_lib->lib_functions),
0,
sizeof(ts_LibXmountOutput_Functions));
// Set name and handle
XMOUNT_STRSET(p_output_lib->p_name,p_dirent->d_name);
p_output_lib->p_lib=p_libxmount;
// Get and set supported types
p_supported_formats=pfun_output_GetSupportedFormats();
supported_formats_len=0;
p_buf=p_supported_formats;
while(*p_buf!='\0') {
supported_formats_len+=(strlen(p_buf)+1);
p_buf+=(strlen(p_buf)+1);
}
supported_formats_len++;
XMOUNT_MALLOC(p_output_lib->p_supported_output_formats,
char*,
supported_formats_len);
memcpy(p_output_lib->p_supported_output_formats,
p_supported_formats,
supported_formats_len);
// Get, set and check lib_functions
pfun_output_GetFunctions(&(p_output_lib->lib_functions));
if(p_output_lib->lib_functions.CreateHandle==NULL ||
p_output_lib->lib_functions.DestroyHandle==NULL ||
p_output_lib->lib_functions.Transform==NULL ||
p_output_lib->lib_functions.Size==NULL ||
p_output_lib->lib_functions.Read==NULL ||
p_output_lib->lib_functions.Write==NULL ||
p_output_lib->lib_functions.OptionsHelp==NULL ||
p_output_lib->lib_functions.OptionsParse==NULL ||
p_output_lib->lib_functions.GetInfofileContent==NULL ||
p_output_lib->lib_functions.GetErrorMessage==NULL ||
p_output_lib->lib_functions.FreeBuffer==NULL)
{
LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
p_dirent->d_name);
free(p_output_lib->p_supported_output_formats);
free(p_output_lib->p_name);
free(p_output_lib);
dlclose(p_libxmount);
continue;
}
// Add entry to the input library list
XMOUNT_REALLOC(glob_xmount.output.pp_libs,
pts_OutputLib*,
sizeof(pts_OutputLib)*
(glob_xmount.output.libs_count+1));
glob_xmount.output.pp_libs[glob_xmount.output.libs_count++]=
p_output_lib;
LOG_DEBUG("Output library '%s' loaded successfully\n",p_dirent->d_name);
} else {
LOG_DEBUG("Ignoring '%s'.\n",p_dirent->d_name);
continue;
}
}
#undef LIBXMOUNT_LOAD_SYMBOL
#undef LIBXMOUNT_LOAD
// Get loaded library counts
input_ret=XmountInput_GetLibraryCount(glob_xmount.h_input,&input_lib_count);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to get input library count: Error code %u!\n",input_ret);
return FALSE;
}
+ morph_ret=XmountMorphing_GetLibraryCount(glob_xmount.h_morphing,
+ &morphing_lib_count);
+ if(morph_ret!=e_XmountMorphError_None) {
+ LOG_ERROR("Unable to get morphing library count: Error code %u!\n",
+ input_ret);
+ return FALSE;
+ }
LOG_DEBUG("A total of %u input libs, %u morphing libs and %u output libs "
"were loaded.\n",
input_lib_count,
- glob_xmount.morphing.libs_count,
+ morphing_lib_count,
glob_xmount.output.libs_count);
free(p_library_path);
closedir(p_dir);
return ((input_lib_count>0 &&
- glob_xmount.morphing.libs_count>0 &&
+ morphing_lib_count>0 &&
glob_xmount.output.libs_count>0) ? TRUE : FALSE);
}
//! Search an appropriate morphing lib for the specified morph type
/*!
* \return TRUE on success, FALSE on error
*/
static int FindMorphingLib() {
char *p_buf;
LOG_DEBUG("Trying to find suitable library for morph type '%s'.\n",
glob_xmount.morphing.p_morph_type);
// Loop over all loaded libs
for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
LOG_DEBUG("Checking morphing library %s\n",
glob_xmount.morphing.pp_libs[i]->p_name);
p_buf=glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types;
while(*p_buf!='\0') {
if(strcmp(p_buf,glob_xmount.morphing.p_morph_type)==0) {
// Library supports morph type, set lib functions
LOG_DEBUG("Morphing library '%s' pretends to handle that morph type.\n",
glob_xmount.morphing.pp_libs[i]->p_name);
glob_xmount.morphing.p_functions=
&(glob_xmount.morphing.pp_libs[i]->lib_functions);
return TRUE;
}
p_buf+=(strlen(p_buf)+1);
}
}
LOG_DEBUG("Couldn't find any suitable library.\n");
// No library supporting morph type found
return FALSE;
}
//! Search an appropriate output lib for the specified output format
/*!
* \return TRUE on success, FALSE on error
*/
static int FindOutputLib() {
char *p_buf;
LOG_DEBUG("Trying to find suitable library for output format '%s'.\n",
glob_xmount.output.p_output_format);
// Loop over all loaded output libs
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
LOG_DEBUG("Checking output library %s\n",
glob_xmount.output.pp_libs[i]->p_name);
p_buf=glob_xmount.output.pp_libs[i]->p_supported_output_formats;
while(*p_buf!='\0') {
if(strcmp(p_buf,glob_xmount.output.p_output_format)==0) {
// Library supports output type, set lib functions
LOG_DEBUG("Output library '%s' pretends to handle that output format.\n",
glob_xmount.output.pp_libs[i]->p_name);
glob_xmount.output.p_functions=
&(glob_xmount.output.pp_libs[i]->lib_functions);
return TRUE;
}
p_buf+=(strlen(p_buf)+1);
}
}
LOG_DEBUG("Couldn't find any suitable library.\n");
// No library supporting output format found
return FALSE;
}
-static void InitResources() {
+static int InitResources() {
+ te_XmountInput_Error input_ret=e_XmountInput_Error_None;
+
// Args
glob_xmount.args.overwrite_cache=FALSE;
glob_xmount.args.p_cache_file=NULL;
// Input
- glob_xmount.h_input=NULL;
+ input_ret=XmountInput_CreateHandle(&(glob_xmount.h_input));
+ if(input_ret!=e_XmountInput_Error_None) {
+ LOG_ERROR("Unable to create input handle: Error code %u!\n",input_ret);
+ return FALSE;
+ }
// Morphing
glob_xmount.morphing.libs_count=0;
glob_xmount.morphing.pp_libs=NULL;
glob_xmount.morphing.p_morph_type=NULL;
glob_xmount.morphing.lib_params_count=0;
glob_xmount.morphing.pp_lib_params=NULL;
glob_xmount.morphing.p_handle=NULL;
glob_xmount.morphing.p_functions=NULL;
glob_xmount.morphing.input_image_functions.ImageCount=
&LibXmount_Morphing_ImageCount;
glob_xmount.morphing.input_image_functions.Size=&LibXmount_Morphing_Size;
glob_xmount.morphing.input_image_functions.Read=&LibXmount_Morphing_Read;
// Cache
glob_xmount.h_cache=NULL;
// Output
glob_xmount.output.libs_count=0;
glob_xmount.output.pp_libs=NULL;
glob_xmount.output.p_output_format=NULL;
glob_xmount.output.lib_params_count=0;
glob_xmount.output.pp_lib_params=NULL;
glob_xmount.output.p_handle=NULL;
glob_xmount.output.p_functions=NULL;
glob_xmount.output.input_functions.Size=&LibXmount_Output_Size;
glob_xmount.output.input_functions.Read=&LibXmount_Output_Read;
glob_xmount.output.input_functions.Write=&LibXmount_Output_Write;
glob_xmount.output.image_size=0;
glob_xmount.output.writable=FALSE;
glob_xmount.output.p_virtual_image_path=NULL;
glob_xmount.output.p_info_path=NULL;
glob_xmount.output.p_info_file=NULL;
// Misc data
glob_xmount.debug=FALSE;
glob_xmount.may_set_fuse_allow_other=FALSE;
glob_xmount.fuse_argc=0;
glob_xmount.pp_fuse_argv=NULL;
glob_xmount.p_mountpoint=NULL;
glob_xmount.p_first_input_image_name=NULL;
- // TODO: Move where needed
- //glob_xmount.image_hash_lo=0;
- //glob_xmount.image_hash_hi=0;
+ glob_xmount.image_hash_lo=0;
+ glob_xmount.image_hash_hi=0;
+
+ return TRUE;
}
/*
* FreeResources
*/
static void FreeResources() {
int ret;
te_XmountCache_Error cache_ret=e_XmountCache_Error_None;
te_XmountInput_Error input_ret=e_XmountInput_Error_None;
LOG_DEBUG("Freeing all resources\n");
// Misc
if(glob_xmount.p_first_input_image_name!=NULL) {
XMOUNT_FREE(glob_xmount.p_first_input_image_name);
}
if(glob_xmount.pp_fuse_argv!=NULL) {
for(int i=0;i<glob_xmount.fuse_argc;i++) free(glob_xmount.pp_fuse_argv[i]);
free(glob_xmount.pp_fuse_argv);
}
if(glob_xmount.p_mountpoint!=NULL) free(glob_xmount.p_mountpoint);
// Output
if(glob_xmount.output.p_functions!=NULL) {
if(glob_xmount.output.p_handle!=NULL) {
// Destroy output handle
ret=glob_xmount.output.p_functions->
DestroyHandle(&(glob_xmount.output.p_handle));
if(ret!=0) {
LOG_ERROR("Unable to destroy output handle: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret));
}
}
}
if(glob_xmount.output.pp_lib_params!=NULL) {
for(uint32_t i=0;i<glob_xmount.output.lib_params_count;i++)
free(glob_xmount.output.pp_lib_params[i]);
free(glob_xmount.output.pp_lib_params);
}
if(glob_xmount.output.p_output_format!=NULL)
free(glob_xmount.output.p_output_format);
if(glob_xmount.output.pp_libs!=NULL) {
// Unload output libs
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
if(glob_xmount.output.pp_libs[i]==NULL) continue;
if(glob_xmount.output.pp_libs[i]->p_supported_output_formats!=NULL)
free(glob_xmount.output.pp_libs[i]->p_supported_output_formats);
if(glob_xmount.output.pp_libs[i]->p_lib!=NULL)
dlclose(glob_xmount.output.pp_libs[i]->p_lib);
if(glob_xmount.output.pp_libs[i]->p_name!=NULL)
free(glob_xmount.output.pp_libs[i]->p_name);
free(glob_xmount.output.pp_libs[i]);
}
free(glob_xmount.output.pp_libs);
}
if(glob_xmount.output.p_info_path!=NULL)
free(glob_xmount.output.p_info_path);
if(glob_xmount.output.p_info_file!=NULL)
free(glob_xmount.output.p_info_file);
if(glob_xmount.output.p_virtual_image_path!=NULL)
free(glob_xmount.output.p_virtual_image_path);
// Cache
if(glob_xmount.h_cache!=NULL) {
cache_ret=XmountCache_Close(&(glob_xmount.h_cache));
if(cache_ret!=e_XmountCache_Error_None) {
LOG_ERROR("Unable to close cache file: Error code %u: Ignoring!\n",
cache_ret);
}
}
// Morphing
if(glob_xmount.morphing.p_functions!=NULL) {
if(glob_xmount.morphing.p_handle!=NULL) {
// Destroy morphing handle
ret=glob_xmount.morphing.p_functions->
DestroyHandle(&(glob_xmount.morphing.p_handle));
if(ret!=0) {
LOG_ERROR("Unable to destroy morphing handle: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
}
}
}
if(glob_xmount.morphing.pp_lib_params!=NULL) {
for(uint32_t i=0;i<glob_xmount.morphing.lib_params_count;i++)
free(glob_xmount.morphing.pp_lib_params[i]);
free(glob_xmount.morphing.pp_lib_params);
}
if(glob_xmount.morphing.p_morph_type!=NULL)
free(glob_xmount.morphing.p_morph_type);
if(glob_xmount.morphing.pp_libs!=NULL) {
// Unload morphing libs
for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
if(glob_xmount.morphing.pp_libs[i]==NULL) continue;
if(glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types!=NULL)
free(glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types);
if(glob_xmount.morphing.pp_libs[i]->p_lib!=NULL)
dlclose(glob_xmount.morphing.pp_libs[i]->p_lib);
if(glob_xmount.morphing.pp_libs[i]->p_name!=NULL)
free(glob_xmount.morphing.pp_libs[i]->p_name);
free(glob_xmount.morphing.pp_libs[i]);
}
free(glob_xmount.morphing.pp_libs);
}
// Input
// Just in case close was not already called, call it now
input_ret=XmountInput_Close(glob_xmount.h_input);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to close input image(s): Error code %u: Ignoring!\n",
input_ret);
}
input_ret=XmountInput_DestroyHandle(&(glob_xmount.h_input));
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to destroy input handle: Error code %u: Ignoring!\n",
input_ret);
}
// Args
if(glob_xmount.args.p_cache_file!=NULL) {
XMOUNT_FREE(glob_xmount.args.p_cache_file);
}
// Before we return, initialize everything in case ReleaseResources would be
// called again.
InitResources();
}
/*******************************************************************************
* LibXmount_Morphing function implementation
******************************************************************************/
//! Function to get the amount of input images
/*!
* \param p_count Count of input images
* \return 0 on success
*/
static int LibXmount_Morphing_ImageCount(uint64_t *p_count) {
te_XmountInput_Error input_ret=e_XmountInput_Error_None;
input_ret=XmountInput_GetImageCount(glob_xmount.h_input,p_count);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to get input image count: Error code %u!\n",input_ret);
return -EIO;
}
return 0;
}
//! Function to get the size of the morphed data
/*!
* \param image Image number
* \param p_size Pointer to store input image's size to
* \return 0 on success
*/
static int LibXmount_Morphing_Size(uint64_t image, uint64_t *p_size) {
te_XmountInput_Error input_ret=e_XmountInput_Error_None;
input_ret=XmountInput_GetSize(glob_xmount.h_input,image,p_size);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to get size of input image %" PRIu64 ": Error code %u!\n",
image,
input_ret);
return -EIO;
}
return 0;
}
//! Function to read data from input image
/*!
* \param image Image number
* \param p_buf Buffer to store read data to
* \param offset Position at which to start reading
* \param count Amount of bytes to read
* \param p_read Number of read bytes on success
* \return 0 on success or negated error code on error
*/
static int LibXmount_Morphing_Read(uint64_t image,
char *p_buf,
off_t offset,
size_t count,
size_t *p_read)
{
te_XmountInput_Error input_ret=e_XmountInput_Error_None;
input_ret=XmountInput_ReadData(glob_xmount.h_input,
image,
p_buf,
offset,
count,
p_read);
if(input_ret!=e_XmountInput_Error_None) {
LOG_ERROR("Unable to read data of input image %" PRIu64
": Error code %u!\n",
image,
input_ret);
return -EIO;
}
return 0;
}
/*******************************************************************************
* LibXmount_Output function implementation
******************************************************************************/
//! Function to get the size of the morphed image
/*!
* \param p_size Pointer to store morphed image's size to
* \return 0 on success
*/
static int LibXmount_Output_Size(uint64_t *p_size) {
int ret=0;
ret=GetMorphedImageSize(p_size);
return ret==TRUE ? 0 : ret;
}
//! Function to read data from the morphed image
/*!
* \param p_buf Buffer to store read data to
* \param offset Position at which to start reading
* \param count Amount of bytes to read
* \param p_read Number of read bytes on success
* \return 0 on success or negated error code on error
*/
static int LibXmount_Output_Read(char *p_buf,
off_t offset,
size_t count,
size_t *p_read)
{
return ReadMorphedImageData(p_buf,offset,count,p_read);
}
//! Function to write data to the morphed image
/*!
* \param p_buf Buffer with data to write
* \param offset Position at which to start writing
* \param count Amount of bytes to write
* \param p_written Number of written bytes on success
* \return 0 on success or negated error code on error
*/
static int LibXmount_Output_Write(char *p_buf,
off_t offset,
size_t count,
size_t *p_written)
{
return WriteMorphedImageData(p_buf,offset,count,p_written);
}
/*******************************************************************************
* Main
******************************************************************************/
int main(int argc, char *argv[]) {
+ uint64_t input_image_count=0;
struct stat file_stat;
int ret;
int fuse_ret;
char *p_err_msg;
+ te_XmountInput_Error input_ret=e_XmountInput_Error_None;
te_XmountCache_Error cache_ret=e_XmountCache_Error_None;
// Set implemented FUSE functions
struct fuse_operations xmount_operations = {
//.access=FuseAccess,
.getattr=Xmount_FuseGetAttr,
.mkdir=Xmount_FuseMkDir,
.mknod=Xmount_FuseMkNod,
.open=Xmount_FuseOpen,
.readdir=Xmount_FuseReadDir,
.read=Xmount_FuseRead,
.rename=Xmount_FuseRename,
.rmdir=Xmount_FuseRmDir,
//.statfs=FuseStatFs,
.unlink=Xmount_FuseUnlink,
.write=Xmount_FuseWrite
};
// Disable std output / input buffering
setbuf(stdout,NULL);
setbuf(stderr,NULL);
// Init glob_xmount
- InitResources();
+ if(InitResources()==FALSE) {
+ LOG_ERROR("Unable to initialize internal resources!\n");
+ return 1;
+ }
// Load input, morphing and output libs
if(!LoadLibs()) {
LOG_ERROR("Unable to load any libraries!\n")
return 1;
}
// Check FUSE settings
CheckFuseSettings();
// Parse command line options
if(ParseCmdLine(argc,argv)!=TRUE) {
PrintUsage(argv[0]);
FreeResources();
return 1;
}
// Check command line options
- if(glob_xmount.input.images_count==0) {
+ input_ret=XmountInput_GetImageCount(glob_xmount.h_input,&input_image_count);
+ if(input_ret!=e_XmountInput_Error_None) {
+ LOG_ERROR("Unable to get input image count: Error code %u!\n",input_ret);
+ return 1;
+ }
+ if(input_image_count==0) {
LOG_ERROR("No --in command line option specified!\n")
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(glob_xmount.fuse_argc<2) {
LOG_ERROR("Couldn't parse command line options!\n")
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(glob_xmount.morphing.p_morph_type==NULL) {
XMOUNT_STRSET(glob_xmount.morphing.p_morph_type,"combine");
}
// TODO: Add default output image format here
// Check if mountpoint is a valid dir
if(stat(glob_xmount.p_mountpoint,&file_stat)!=0) {
LOG_ERROR("Unable to stat mount point '%s'!\n",glob_xmount.p_mountpoint);
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(!S_ISDIR(file_stat.st_mode)) {
LOG_ERROR("Mount point '%s' is not a directory!\n",
glob_xmount.p_mountpoint);
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(glob_xmount.debug==TRUE) {
LOG_DEBUG("Options passed to FUSE: ")
for(int i=0;i<glob_xmount.fuse_argc;i++) {
printf("%s ",glob_xmount.pp_fuse_argv[i]);
}
printf("\n");
}
// Init mutexes
pthread_mutex_init(&(glob_xmount.mutex_image_rw),NULL);
pthread_mutex_init(&(glob_xmount.mutex_info_read),NULL);
// Load input images
- for(uint64_t i=0;i<glob_xmount.input.images_count;i++) {
- if(glob_xmount.debug==TRUE) {
- if(glob_xmount.input.pp_images[i]->files_count==1) {
- LOG_DEBUG("Loading image file \"%s\"...\n",
- glob_xmount.input.pp_images[i]->pp_files[0])
- } else {
- LOG_DEBUG("Loading image files \"%s .. %s\"...\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.pp_images[i]->
- pp_files[glob_xmount.input.pp_images[i]->files_count-1])
- }
- }
-
- // Find input lib
- if(!FindInputLib(glob_xmount.input.pp_images[i])) {
- LOG_ERROR("Unknown input image type '%s' for input image '%s'!\n",
- glob_xmount.input.pp_images[i]->p_type,
- glob_xmount.input.pp_images[i]->pp_files[0])
- PrintUsage(argv[0]);
- FreeResources();
- return 1;
- }
-
- // Init input image handle
- ret=glob_xmount.input.pp_images[i]->p_functions->
- CreateHandle(&(glob_xmount.input.pp_images[i]->p_handle),
- glob_xmount.input.pp_images[i]->p_type,
- glob_xmount.debug);
- if(ret!=0) {
- LOG_ERROR("Unable to init input handle for input image '%s': %s!\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.pp_images[i]->p_functions->
- GetErrorMessage(ret));
- FreeResources();
- return 1;
- }
-
- // Parse input lib specific options
- if(glob_xmount.input.pp_lib_params!=NULL) {
- ret=glob_xmount.input.pp_images[i]->p_functions->
- OptionsParse(glob_xmount.input.pp_images[i]->p_handle,
- glob_xmount.input.lib_params_count,
- glob_xmount.input.pp_lib_params,
- (const char**)&p_err_msg);
- if(ret!=0) {
- if(p_err_msg!=NULL) {
- LOG_ERROR("Unable to parse input library specific options for image "
- "'%s': %s: %s!\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.pp_images[i]->p_functions->
- GetErrorMessage(ret),
- p_err_msg);
- glob_xmount.input.pp_images[i]->p_functions->FreeBuffer(p_err_msg);
- FreeResources();
- return 1;
- } else {
- LOG_ERROR("Unable to parse input library specific options for image "
- "'%s': %s!\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.pp_images[i]->p_functions->
- GetErrorMessage(ret));
- FreeResources();
- return 1;
- }
- }
- }
-
- // Open input image
- ret=
- glob_xmount.input.pp_images[i]->
- p_functions->
- Open(glob_xmount.input.pp_images[i]->p_handle,
- (const char**)(glob_xmount.input.pp_images[i]->pp_files),
- glob_xmount.input.pp_images[i]->files_count);
- if(ret!=0) {
- LOG_ERROR("Unable to open input image file '%s': %s!\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.pp_images[i]->p_functions->
- GetErrorMessage(ret));
- FreeResources();
- return 1;
- }
-
- // Determine input image size
- ret=glob_xmount.input.pp_images[i]->
- p_functions->
- Size(glob_xmount.input.pp_images[i]->p_handle,
- &(glob_xmount.input.pp_images[i]->size));
- if(ret!=0) {
- LOG_ERROR("Unable to determine size of input image '%s': %s!\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.pp_images[i]->
- p_functions->GetErrorMessage(ret));
- FreeResources();
- return 1;
- }
-
- // If an offset was specified, check it against offset and change size
- if(glob_xmount.input.image_offset!=0) {
- if(glob_xmount.input.image_offset>glob_xmount.input.pp_images[i]->size) {
- LOG_ERROR("The specified offset is larger than the size of the input "
- "image '%s'! (%" PRIu64 " > %" PRIu64 ")\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.image_offset,
- glob_xmount.input.pp_images[i]->size);
- FreeResources();
- return 1;
- }
- glob_xmount.input.pp_images[i]->size-=glob_xmount.input.image_offset;
- }
-
- // If a size limit was specified, check it and change size
- if(glob_xmount.input.image_size_limit!=0) {
- if(glob_xmount.input.pp_images[i]->size<
- glob_xmount.input.image_size_limit)
- {
- LOG_ERROR("The specified size limit is larger than the size of the "
- "input image '%s'! (%" PRIu64 " > %" PRIu64 ")\n",
- glob_xmount.input.pp_images[i]->pp_files[0],
- glob_xmount.input.image_size_limit,
- glob_xmount.input.pp_images[i]->size);
- FreeResources();
- return 1;
- }
- glob_xmount.input.pp_images[i]->size=glob_xmount.input.image_size_limit;
- }
-
- LOG_DEBUG("Input image loaded successfully\n")
+ input_ret=XmountInput_Open(glob_xmount.h_input);
+ if(input_ret!=e_XmountInput_Error_None) {
+ LOG_ERROR("Failed opening input image(s): Error code %u!\n",input_ret);
+ FreeResources();
+ return 1;
}
// Find morphing lib
if(FindMorphingLib()!=TRUE) {
LOG_ERROR("Unable to find a library supporting the morphing type '%s'!\n",
glob_xmount.morphing.p_morph_type);
FreeResources();
return 1;
}
// Init morphing
ret=glob_xmount.morphing.p_functions->
CreateHandle(&glob_xmount.morphing.p_handle,
glob_xmount.morphing.p_morph_type,
glob_xmount.debug);
if(ret!=0) {
LOG_ERROR("Unable to create morphing handle: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Parse morphing lib specific options
if(glob_xmount.morphing.pp_lib_params!=NULL) {
p_err_msg=NULL;
ret=glob_xmount.morphing.p_functions->
OptionsParse(glob_xmount.morphing.p_handle,
glob_xmount.morphing.lib_params_count,
glob_xmount.morphing.pp_lib_params,
(const char**)&p_err_msg);
if(ret!=0) {
if(p_err_msg!=NULL) {
LOG_ERROR("Unable to parse morphing library specific options: %s: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret),
p_err_msg);
glob_xmount.morphing.p_functions->FreeBuffer(p_err_msg);
FreeResources();
return 1;
} else {
LOG_ERROR("Unable to parse morphing library specific options: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
}
}
// Morph image
ret=glob_xmount.morphing.p_functions->
Morph(glob_xmount.morphing.p_handle,
&(glob_xmount.morphing.input_image_functions));
if(ret!=0) {
LOG_ERROR("Unable to start morphing: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Init random generator
srand(time(NULL));
// Calculate partial MD5 hash of input image file
- if(CalculateInputImageHash(&(glob_xmount.input.image_hash_lo),
- &(glob_xmount.input.image_hash_hi))==FALSE)
+ if(CalculateInputImageHash(&(glob_xmount.image_hash_lo),
+ &(glob_xmount.image_hash_hi))==FALSE)
{
LOG_ERROR("Couldn't calculate partial hash of morphed image!\n")
return 1;
}
if(glob_xmount.debug==TRUE) {
LOG_DEBUG("Partial MD5 hash of morphed image: ")
for(int i=0;i<8;i++)
- printf("%02hhx",*(((char*)(&(glob_xmount.input.image_hash_lo)))+i));
+ printf("%02hhx",*(((char*)(&(glob_xmount.image_hash_lo)))+i));
for(int i=0;i<8;i++)
- printf("%02hhx",*(((char*)(&(glob_xmount.input.image_hash_hi)))+i));
+ printf("%02hhx",*(((char*)(&(glob_xmount.image_hash_hi)))+i));
printf("\n");
}
- if(!ExtractOutputFileNames(glob_xmount.input.pp_images[0]->pp_files[0])) {
+ if(!ExtractOutputFileNames(glob_xmount.p_first_input_image_name)) {
LOG_ERROR("Couldn't extract virtual file names!\n");
FreeResources();
return 1;
}
LOG_DEBUG("Virtual file names extracted successfully\n")
// Find output lib
if(FindOutputLib()!=TRUE) {
LOG_ERROR("Unable to find a library supporting the output format '%s'!\n",
glob_xmount.output.p_output_format);
FreeResources();
return 1;
}
// Init output
ret=glob_xmount.output.p_functions->
CreateHandle(&glob_xmount.output.p_handle,
glob_xmount.output.p_output_format,
glob_xmount.debug);
if(ret!=0) {
LOG_ERROR("Unable to create output handle: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Parse output lib specific options
if(glob_xmount.output.pp_lib_params!=NULL) {
p_err_msg=NULL;
ret=glob_xmount.output.p_functions->
OptionsParse(glob_xmount.output.p_handle,
glob_xmount.output.lib_params_count,
glob_xmount.output.pp_lib_params,
(const char**)&p_err_msg);
if(ret!=0) {
if(p_err_msg!=NULL) {
LOG_ERROR("Unable to parse output library specific options: %s: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret),
p_err_msg);
glob_xmount.output.p_functions->FreeBuffer(p_err_msg);
FreeResources();
return 1;
} else {
LOG_ERROR("Unable to parse output library specific options: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
}
}
// Morph image
ret=glob_xmount.morphing.p_functions->
Morph(glob_xmount.morphing.p_handle,
&(glob_xmount.morphing.input_image_functions));
if(ret!=0) {
LOG_ERROR("Unable to start morphing: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Gather infos for info file
if(!InitInfoFile()) {
LOG_ERROR("Couldn't gather infos for virtual image info file!\n")
FreeResources();
return 1;
}
LOG_DEBUG("Virtual image info file build successfully\n")
if(glob_xmount.output.writable) {
// Init cache file and cache file block index
// TODO: Add cache file creration / opening
/*
if(glob_xmount.args.overwrite_cache==TRUE) {
cache_ret=XmountCache_Create(&(glob_xmount.h_cache),
glob_xmount.args.p_cache_file,
} else {
cache_ret=XmountCache_Open
}
te_XmountCache_Error cache_ret=e_XmountCache_Error_None;
if(!InitCacheFile()) {
LOG_ERROR("Couldn't initialize cache file!\n")
FreeResources();
return 1;
}
*/
LOG_DEBUG("Cache file initialized successfully\n")
}
// Call fuse_main to do the fuse magic
fuse_ret=fuse_main(glob_xmount.fuse_argc,
glob_xmount.pp_fuse_argv,
&xmount_operations,
NULL);
// Destroy mutexes
pthread_mutex_destroy(&(glob_xmount.mutex_image_rw));
pthread_mutex_destroy(&(glob_xmount.mutex_info_read));
// Free allocated memory
FreeResources();
return fuse_ret;
}
diff --git a/src/xmount.h b/src/xmount.h
index 829f789..59fb28a 100755
--- a/src/xmount.h
+++ b/src/xmount.h
@@ -1,95 +1,99 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* xmount is a small tool to "fuse mount" various image formats and enable *
* virtual write access. *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#ifndef XMOUNT_H
#define XMOUNT_H
#include "xmount_input.h"
#include "xmount_morphing.h"
#include "xmount_cache.h"
#include "xmount_output.h"
#undef FALSE
#undef TRUE
#define FALSE 0
#define TRUE 1
/*
* Constants
*/
#define IMAGE_INFO_INPUT_HEADER \
"------> The following values are supplied by the used input library(ies) " \
"<------\n"
#define IMAGE_INFO_MORPHING_HEADER \
"\n------> The following values are supplied by the used morphing library " \
"<------\n\n"
/*******************************************************************************
* Xmount specific structures
******************************************************************************/
//! Structure containing xmount arguments
typedef struct s_XmountArgs {
//! Cache file
char *p_cache_file;
//! If set to 1, overwrite any existing cache file
uint8_t overwrite_cache;
} ts_XmountArgs;
//! Structure containing global xmount runtime infos
typedef struct s_XmountData {
//! Parsed xmount arguments
ts_XmountArgs args;
//! Input image related data
pts_XmountInputHandle h_input;
//! Morphing related data
- ts_MorphingData morphing;
+ pts_XmountMorphHandle h_morphing;
//! Cache file handle
pts_XmountCacheHandle h_cache;
//! Output image related data
ts_OutputData output;
//! Enable debug output
uint8_t debug;
//! Set if we are allowed to set fuse's allow_other option
uint8_t may_set_fuse_allow_other;
//! Argv for FUSE
int fuse_argc;
//! Argv for FUSE
char **pp_fuse_argv;
//! Mount point
char *p_mountpoint;
//! First input image's path/name
char *p_first_input_image_name;
+ //! MD5 hash of partial input image (lower 64 bit) (after morph)
+ uint64_t image_hash_lo;
+ //! MD5 hash of partial input image (higher 64 bit) (after morph)
+ uint64_t image_hash_hi;
//! Mutex to control concurrent read & write access on output image
pthread_mutex_t mutex_image_rw;
//! Mutex to control concurrent read access on info file
pthread_mutex_t mutex_info_read;
} ts_XmountData;
/*******************************************************************************
* Global vars
******************************************************************************/
//! Struct that contains various runtime configuration options
ts_XmountData glob_xmount;
/*******************************************************************************
* Xmount functions
******************************************************************************/
#endif // XMOUNT_H
diff --git a/src/xmount_fuse.c b/src/xmount_fuse.c
index 9d22d22..d57b5ac 100644
--- a/src/xmount_fuse.c
+++ b/src/xmount_fuse.c
@@ -1,366 +1,370 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
+#include <string.h>
+#include <unistd.h>
+#include <pthread.h>
#include <errno.h>
+#include <sys/types.h>
#include "xmount_fuse.h"
#include "xmount.h"
#define LOG_WARNING(...) { \
LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
}
#define LOG_ERROR(...) { \
LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
}
#define LOG_DEBUG(...) { \
LIBXMOUNT_LOG_DEBUG(glob_xmount.debug,__VA_ARGS__); \
}
/*******************************************************************************
* FUSE function implementation
******************************************************************************/
//! FUSE access implementation
/*!
* \param p_path Path of file to get attributes from
* \param perm Requested permissisons
* \return 0 on success, negated error code on error
*/
/*
int Xmount_FuseAccess(const char *path, int perm) {
// TODO: Implement propper file permission handling
// http://www.cs.cf.ac.uk/Dave/C/node20.html
// Values for the second argument to access.
// These may be OR'd together.
//#define R_OK 4 // Test for read permission.
//#define W_OK 2 // Test for write permission.
//#define X_OK 1 // Test for execute permission.
//#define F_OK 0 // Test for existence.
return 0;
}
*/
//! FUSE getattr implementation
/*!
* \param p_path Path of file to get attributes from
* \param p_stat Pointer to stat structure to save attributes to
* \return 0 on success, negated error code on error
*/
int Xmount_FuseGetAttr(const char *p_path, struct stat *p_stat) {
memset(p_stat,0,sizeof(struct stat));
if(strcmp(p_path,"/")==0) {
// Attributes of mountpoint
p_stat->st_mode=S_IFDIR | 0777;
p_stat->st_nlink=2;
} else if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
// Attributes of virtual image
if(!glob_xmount.output.writable) p_stat->st_mode=S_IFREG | 0444;
else p_stat->st_mode=S_IFREG | 0666;
p_stat->st_nlink=1;
// Get output image file size
if(!GetOutputImageSize((uint64_t*)&(p_stat->st_size))) {
LOG_ERROR("Couldn't get image size!\n");
return -ENOENT;
}
// Make sure virtual image seems to be fully allocated (not sparse file).
p_stat->st_blocks=p_stat->st_size/512;
if(p_stat->st_size%512!=0) p_stat->st_blocks++;
} else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
// Attributes of virtual image info file
p_stat->st_mode=S_IFREG | 0444;
p_stat->st_nlink=1;
// Get virtual image info file size
if(glob_xmount.output.p_info_file!=NULL) {
p_stat->st_size=strlen(glob_xmount.output.p_info_file);
} else p_stat->st_size=0;
} else return -ENOENT;
// Set uid and gid of all files to uid and gid of current process
p_stat->st_uid=getuid();
p_stat->st_gid=getgid();
return 0;
}
//! FUSE mkdir implementation
/*!
* \param p_path Directory path
* \param mode Directory permissions
* \return 0 on success, negated error code on error
*/
int Xmount_FuseMkDir(const char *p_path, mode_t mode) {
// TODO: Implement
LOG_ERROR("Attempt to create directory \"%s\" "
"on read-only filesystem!\n",p_path)
return -1;
}
//! FUSE create implementation.
/*!
* \param p_path File to create
* \param mode File mode
* \param dev ??? but not used
* \return 0 on success, negated error code on error
*/
int Xmount_FuseMkNod(const char *p_path, mode_t mode, dev_t dev) {
// TODO: Implement
LOG_ERROR("Attempt to create illegal file \"%s\"\n",p_path)
return -1;
}
//! FUSE readdir implementation
/*!
* \param p_path Path from where files should be listed
* \param p_buf Buffer to write file entrys to
* \param filler Function to write dir entrys to buffer
* \param offset ??? but not used
* \param p_fi File info struct
* \return 0 on success, negated error code on error
*/
int Xmount_FuseReadDir(const char *p_path,
void *p_buf,
fuse_fill_dir_t filler,
off_t offset,
struct fuse_file_info *p_fi)
{
// Ignore some params
(void)offset;
(void)p_fi;
if(strcmp(p_path,"/")==0) {
// Add std . and .. entrys
filler(p_buf,".",NULL,0);
filler(p_buf,"..",NULL,0);
// Add our virtual files (p+1 to ignore starting "/")
filler(p_buf,glob_xmount.output.p_virtual_image_path+1,NULL,0);
filler(p_buf,glob_xmount.output.p_info_path+1,NULL,0);
} else return -ENOENT;
return 0;
}
//! FUSE open implementation
/*!
* \param p_path Path to file to open
* \param p_fi File info struct
* \return 0 on success, negated error code on error
*/
int Xmount_FuseOpen(const char *p_path, struct fuse_file_info *p_fi) {
#define CHECK_OPEN_PERMS() { \
if(!glob_xmount.output.writable && (p_fi->flags & 3)!=O_RDONLY) { \
LOG_DEBUG("Attempt to open the read-only file \"%s\" for writing.\n", \
p_path) \
return -EACCES; \
} \
return 0; \
}
if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0 ||
strcmp(p_path,glob_xmount.output.p_info_path)==0)
{
CHECK_OPEN_PERMS();
}
#undef CHECK_OPEN_PERMS
LOG_DEBUG("Attempt to open inexistant file \"%s\".\n",p_path);
return -ENOENT;
}
//! FUSE read implementation
/*!
* \param p_path Path (relative to mount folder) of file to read data from
* \param p_buf Pre-allocated buffer where read data should be written to
* \param size Number of bytes to read
* \param offset Offset to start reading at
* \param p_fi: File info struct
* \return Read bytes on success, negated error code on error
*/
int Xmount_FuseRead(const char *p_path,
char *p_buf,
size_t size,
off_t offset,
struct fuse_file_info *p_fi)
{
(void)p_fi;
int ret;
uint64_t len;
#define READ_MEM_FILE(filebuf,filesize,filetypestr,mutex) { \
len=filesize; \
if(offset<len) { \
if(offset+size>len) { \
LOG_DEBUG("Attempt to read past EOF of virtual " filetypestr " file\n"); \
LOG_DEBUG("Adjusting read size from %u to %u\n",size,len-offset); \
size=len-offset; \
} \
pthread_mutex_lock(&mutex); \
memcpy(p_buf,filebuf+offset,size); \
pthread_mutex_unlock(&mutex); \
LOG_DEBUG("Read %" PRIu64 " bytes at offset %" PRIu64 \
" from virtual " filetypestr " file\n",size,offset); \
ret=size; \
} else { \
LOG_DEBUG("Attempt to read behind EOF of virtual " filetypestr " file\n"); \
ret=0; \
} \
}
if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
// Read data from virtual output file
// Wait for other threads to end reading/writing data
pthread_mutex_lock(&(glob_xmount.mutex_image_rw));
// Get requested data
if((ret=ReadOutputImageData(p_buf,offset,size))<0) {
LOG_ERROR("Couldn't read data from virtual image file!\n")
}
// Allow other threads to read/write data again
pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
} else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
// Read data from virtual info file
READ_MEM_FILE(glob_xmount.output.p_info_file,
strlen(glob_xmount.output.p_info_file),
"info",
glob_xmount.mutex_info_read);
} else {
// Attempt to read non existant file
LOG_DEBUG("Attempt to read from non existant file \"%s\"\n",p_path)
ret=-ENOENT;
}
#undef READ_MEM_FILE
// TODO: Return size of read data!!!!!
return ret;
}
//! FUSE rename implementation
/*!
* \param p_path File to rename
* \param p_npath New filename
* \return 0 on error, negated error code on error
*/
int Xmount_FuseRename(const char *p_path, const char *p_npath) {
// TODO: Implement
return -ENOENT;
}
//! FUSE rmdir implementation
/*!
* \param p_path Directory to delete
* \return 0 on success, negated error code on error
*/
int Xmount_FuseRmDir(const char *p_path) {
// TODO: Implement
return -1;
}
//! FUSE unlink implementation
/*!
* \param p_path File to delete
* \return 0 on success, negated error code on error
*/
int Xmount_FuseUnlink(const char *p_path) {
// TODO: Implement
return -1;
}
//! FUSE statfs implementation
/*!
* \param p_path Get stats for fs that the specified file resides in
* \param stats Stats
* \return 0 on success, negated error code on error
*/
/*
int Xmount_FuseStatFs(const char *p_path, struct statvfs *stats) {
struct statvfs CacheFileFsStats;
int ret;
if(glob_xmount.writable==TRUE) {
// If write support is enabled, return stats of fs upon which cache file
// resides in
if((ret=statvfs(glob_xmount.p_cache_file,&CacheFileFsStats))==0) {
memcpy(stats,&CacheFileFsStats,sizeof(struct statvfs));
return 0;
} else {
LOG_ERROR("Couldn't get stats for fs upon which resides \"%s\"\n",
glob_xmount.p_cache_file)
return ret;
}
} else {
// TODO: Return read only
return 0;
}
}
*/
// FUSE write implementation
/*!
* \param p_buf Buffer containing data to write
* \param size Number of bytes to write
* \param offset Offset to start writing at
* \param p_fi: File info struct
*
* Returns:
* Written bytes on success, negated error code on error
*/
int Xmount_FuseWrite(const char *p_path,
const char *p_buf,
size_t size,
off_t offset,
struct fuse_file_info *p_fi)
{
(void)p_fi;
uint64_t len;
if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
// Wait for other threads to end reading/writing data
pthread_mutex_lock(&(glob_xmount.mutex_image_rw));
// Get output image file size
if(!GetOutputImageSize(&len)) {
LOG_ERROR("Couldn't get virtual image size!\n")
pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
return 0;
}
if(offset<len) {
if(offset+size>len) size=len-offset;
if(WriteOutputImageData(p_buf,offset,size)!=size) {
LOG_ERROR("Couldn't write data to virtual image file!\n")
pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
return 0;
}
} else {
LOG_DEBUG("Attempt to write past EOF of virtual image file\n")
pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
return 0;
}
// Allow other threads to read/write data again
pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
} else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
// Attempt to write data to read only image info file
LOG_DEBUG("Attempt to write data to virtual info file\n");
return -ENOENT;
} else {
// Attempt to write to non existant file
LOG_DEBUG("Attempt to write to the non existant file \"%s\"\n",p_path)
return -ENOENT;
}
return size;
}
diff --git a/src/xmount_input.c b/src/xmount_input.c
index 414abd6..abd6503 100644
--- a/src/xmount_input.c
+++ b/src/xmount_input.c
@@ -1,826 +1,921 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#include <stdlib.h> // For calloc
#include <string.h> // For memcpy
-//#include <errno.h>
#include <dlfcn.h> // For dlopen, dlclose, dlsym
#include "xmount_input.h"
#include "xmount.h"
#include "macros.h"
#include "../libxmount_input/libxmount_input.h"
/*******************************************************************************
* Private definitions / macros
******************************************************************************/
#define LOG_WARNING(...) { \
LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
}
#define LOG_ERROR(...) { \
LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
}
#define LOG_DEBUG(...) { \
LIBXMOUNT_LOG_DEBUG(glob_xmount.debug,__VA_ARGS__); \
}
/*******************************************************************************
* Private types / structures / enums
******************************************************************************/
//! Structure containing infos about input libs
typedef struct s_XmountInputLib {
//! Filename of lib (without path)
char *p_name;
//! Handle to the loaded lib
void *p_lib;
//! Array of supported input types
char *p_supported_input_types;
//! Struct containing lib functions
ts_LibXmountInputFunctions lib_functions;
} ts_XmountInputLib, *pts_XmountInputLib;
//! Structure containing infos about input images
typedef struct s_XmountInputImage {
//! Image type
char *p_type;
//! Image source file count
uint64_t files_count;
//! Image source files
char **pp_files;
//! Input lib functions for this image
pts_LibXmountInputFunctions p_functions;
//! Image handle
void *p_handle;
//! Image size
uint64_t size;
} ts_XmountInputImage, *pts_XmountInputImage;
typedef struct s_XmountInputHandle {
//! Loaded input lib count
uint32_t libs_count;
//! Array containing infos about loaded input libs
pts_XmountInputLib *pp_libs;
//! Amount of input lib params (--inopts)
uint32_t lib_params_count;
//! Input lib params (--inopts)
pts_LibXmountOptions *pp_lib_params;
//! Input image count
uint64_t images_count;
//! Input images
pts_XmountInputImage *pp_images;
//! Input image offset (--offset)
uint64_t image_offset;
//! Input image size limit (--sizelimit)
uint64_t image_size_limit;
-
- // TODO: Move
- //! MD5 hash of partial input image (lower 64 bit) (after morph)
- //uint64_t image_hash_lo;
- //! MD5 hash of partial input image (higher 64 bit) (after morph)
- //uint64_t image_hash_hi;
+ //! Enable debugging
+ uint8_t debug;
} ts_XmountInputHandle;
/*******************************************************************************
* Private functions declarations
******************************************************************************/
/*!
* \brief Find an input lib for a given input image
*
* Searches trough the list of loaded input libraries to find one that supports
* the given input image's format. On success, that library is associated with
* the given image.
*
* \param p_h Input handle
* \param p_input_image Input image to search input lib for
* \return e_XmountInput_Error_None on success
*/
-te_XmountInput_Error FindInputLib(pts_XmountInputHandle p_h,
- pts_XmountInputImage p_input_image);
+te_XmountInput_Error XmountInput_FindLib(pts_XmountInputHandle p_h,
+ pts_XmountInputImage p_input_image);
/*******************************************************************************
* Public functions implementations
******************************************************************************/
/*
* XmountInput_CreateHandle
*/
te_XmountInput_Error XmountInput_CreateHandle(pts_XmountInputHandle *pp_h) {
pts_XmountInputHandle p_h=NULL;
// Params check
if(pp_h==NULL) return e_XmountInput_Error_InvalidHandlePointer;
// Alloc new handle
p_h=(pts_XmountInputHandle)calloc(1,sizeof(ts_XmountInputHandle));
if(p_h==NULL) {
return e_XmountInput_Error_Alloc;
}
// Init values
p_h->pp_libs=NULL;
p_h->pp_lib_params=NULL;
p_h->pp_images=NULL;
*pp_h=p_h;
return e_XmountInput_Error_None;
}
/*
* XmountInput_DestroyHandle
*/
te_XmountInput_Error XmountInput_DestroyHandle(pts_XmountInputHandle *pp_h) {
pts_XmountInputHandle p_h=NULL;
// Params check
if(pp_h==NULL) return e_XmountInput_Error_InvalidHandlePointer;
if(*pp_h==NULL) return e_XmountInput_Error_InvalidHandle;
p_h=*pp_h;
// Free resources
if(p_h->images_count!=0 && p_h->pp_images!=NULL) {
// TODO: Close images
}
if(p_h->libs_count>0 && p_h->pp_libs!=NULL) {
// Unload all input libs
for(uint32_t i=0;i<p_h->libs_count;i++) {
if(p_h->pp_libs[i]->p_supported_input_types!=NULL) {
XMOUNT_FREE(p_h->pp_libs[i]->p_supported_input_types);
}
if(p_h->pp_libs[i]->p_lib!=NULL) {
dlclose(p_h->pp_libs[i]->p_lib);
p_h->pp_libs[i]->p_lib=NULL;
}
if(p_h->pp_libs[i]->p_name!=NULL) {
XMOUNT_FREE(p_h->pp_libs[i]->p_name);
}
XMOUNT_FREE(p_h->pp_libs[i]);
}
XMOUNT_FREE(p_h->pp_libs);
p_h->libs_count=0;
}
if(p_h->lib_params_count!=0 && p_h->pp_lib_params!=NULL) {
// Free library parameter array
for(uint32_t i=0;i<p_h->lib_params_count;i++) {
XMOUNT_FREE(p_h->pp_lib_params[i]);
}
XMOUNT_FREE(p_h->pp_lib_params);
p_h->lib_params_count=0;
}
return e_XmountInput_Error_None;
}
+/*
+ * XmountInput_EnableDebugging
+ */
+te_XmountInput_Error XmountInput_EnableDebugging(pts_XmountInputHandle p_h) {
+ // Params check
+ if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
+
+ p_h->debug=1;
+ return e_XmountInput_Error_None;
+}
+
/*
* XmountInput_AddLibrary
*/
te_XmountInput_Error XmountInput_AddLibrary(pts_XmountInputHandle p_h,
const char *p_lib_name)
{
uint32_t supported_formats_len=0;
t_LibXmount_Input_GetApiVersion pfun_input_GetApiVersion;
t_LibXmount_Input_GetSupportedFormats pfun_input_GetSupportedFormats;
t_LibXmount_Input_GetFunctions pfun_input_GetFunctions;
void *p_libxmount=NULL;
pts_XmountInputLib p_input_lib=NULL;
char *p_buf=NULL;
char *p_library_path=NULL;
char *p_supported_formats=NULL;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(p_lib_name==NULL) return e_XmountInput_Error_InvalidString;
// Construct full library path
XMOUNT_STRSET(p_library_path,XMOUNT_LIBRARY_PATH);
if(p_library_path[strlen(p_library_path)]!='/') {
XMOUNT_STRAPP(p_library_path,"/");
}
XMOUNT_STRAPP(p_library_path,p_lib_name);
#define XMOUNTINPUT_LOADLIBS__LOAD_SYMBOL(name,pfun) { \
if((pfun=dlsym(p_libxmount,name))==NULL) { \
LOG_ERROR("Unable to load symbol '%s' from library '%s'!\n", \
name, \
p_library_path); \
dlclose(p_libxmount); \
- p_libxmount=NULL; \
- continue; \
+ return e_XmountInput_Error_FailedLoadingSymbol; \
} \
}
// Try to load given library
p_libxmount=dlopen(p_library_path,RTLD_NOW);
if(p_libxmount==NULL) {
LOG_ERROR("Unable to load input library '%s': %s!\n",
p_library_path,
dlerror());
return e_XmountInput_Error_FailedLoadingLibrary;
}
// Load library symbols
- LIBXMOUNT_LOAD_SYMBOL("LibXmount_Input_GetApiVersion",
- pfun_input_GetApiVersion);
+ XMOUNTINPUT_LOADLIBS__LOAD_SYMBOL("LibXmount_Input_GetApiVersion",
+ pfun_input_GetApiVersion);
// Check library's API version
if(pfun_input_GetApiVersion()!=LIBXMOUNT_INPUT_API_VERSION) {
LOG_DEBUG("Failed! Wrong API version.\n");
LOG_ERROR("Unable to load input library '%s'. Wrong API version\n",
p_library_path);
dlclose(p_libxmount);
return e_XmountInput_Error_WrongLibraryApiVersion;
}
- LIBXMOUNT_LOAD_SYMBOL("LibXmount_Input_GetSupportedFormats",
- pfun_input_GetSupportedFormats);
- LIBXMOUNT_LOAD_SYMBOL("LibXmount_Input_GetFunctions",
- pfun_input_GetFunctions);
+ XMOUNTINPUT_LOADLIBS__LOAD_SYMBOL("LibXmount_Input_GetSupportedFormats",
+ pfun_input_GetSupportedFormats);
+ XMOUNTINPUT_LOADLIBS__LOAD_SYMBOL("LibXmount_Input_GetFunctions",
+ pfun_input_GetFunctions);
// Construct new entry for our library list
XMOUNT_MALLOC(p_input_lib,pts_XmountInputLib,sizeof(ts_XmountInputLib));
// Initialize lib_functions structure to NULL
memset(&(p_input_lib->lib_functions),
0,
sizeof(ts_LibXmountInputFunctions));
// Set name and handle
XMOUNT_STRSET(p_input_lib->p_name,p_lib_name);
p_input_lib->p_lib=p_libxmount;
// Get and set supported formats
p_supported_formats=pfun_input_GetSupportedFormats();
p_buf=p_supported_formats;
while(*p_buf!='\0') {
supported_formats_len+=(strlen(p_buf)+1);
p_buf+=(strlen(p_buf)+1);
}
supported_formats_len++;
XMOUNT_MALLOC(p_input_lib->p_supported_input_types,
char*,
supported_formats_len);
memcpy(p_input_lib->p_supported_input_types,
p_supported_formats,
supported_formats_len);
// Get, set and check lib_functions
pfun_input_GetFunctions(&(p_input_lib->lib_functions));
if(p_input_lib->lib_functions.CreateHandle==NULL ||
p_input_lib->lib_functions.DestroyHandle==NULL ||
p_input_lib->lib_functions.Open==NULL ||
p_input_lib->lib_functions.Close==NULL ||
p_input_lib->lib_functions.Size==NULL ||
p_input_lib->lib_functions.Read==NULL ||
p_input_lib->lib_functions.OptionsHelp==NULL ||
p_input_lib->lib_functions.OptionsParse==NULL ||
p_input_lib->lib_functions.GetInfofileContent==NULL ||
p_input_lib->lib_functions.GetErrorMessage==NULL ||
p_input_lib->lib_functions.FreeBuffer==NULL)
{
LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
p_lib_name);
- free(p_input_lib->p_supported_input_types);
- free(p_input_lib->p_name);
- free(p_input_lib);
+ XMOUNT_FREE(p_input_lib->p_supported_input_types);
+ XMOUNT_FREE(p_input_lib->p_name);
+ XMOUNT_FREE(p_input_lib);
dlclose(p_libxmount);
return e_XmountInput_Error_MissingLibraryFunction;
}
// Add entry to the input library list
XMOUNT_REALLOC(p_h->pp_libs,
pts_XmountInputLib*,
sizeof(pts_XmountInputLib)*(p_h->libs_count+1));
p_h->pp_libs[p_h->libs_count++]=p_input_lib;
LOG_DEBUG("Input library '%s' loaded successfully\n",p_lib_name);
#undef XMOUNTINPUT_LOADLIBS__LOAD_SYMBOL
return e_XmountInput_Error_None;
}
te_XmountInput_Error XmountInput_GetLibraryCount(pts_XmountInputHandle p_h,
uint32_t *p_count)
{
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(p_count==NULL) return e_XmountInput_Error_InvalidBuffer;
*p_count=p_h->libs_count;
return e_XmountInput_Error_None;
}
/*
* XmountInput_GetSupportedFormats
*/
te_XmountInput_Error XmountInput_GetSupportedFormats(pts_XmountInputHandle p_h,
char **pp_formats)
{
char *p_buf=NULL;
char *p_formats=NULL;
uint32_t cur_len=0;
uint32_t vector_len=0;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(pp_formats==NULL) return e_XmountInput_Error_InvalidBuffer;
// Loop over all loaded libs, extract supported formats and add to our vector
// TODO: IMPROVEMENT: Final vector could be sorted
for(uint32_t i=0;i<p_h->libs_count;i++) {
p_buf=p_h->pp_libs[i]->p_supported_input_types;
while(p_buf!=NULL && *p_buf!='\0') p_buf+=(strlen(p_buf)+1);
cur_len=(uint32_t)(p_buf-p_h->pp_libs[i]->p_supported_input_types);
if(cur_len==0) continue;
p_formats=(char*)realloc(p_formats,vector_len+cur_len);
if(p_formats==NULL) return e_XmountInput_Error_Alloc;
memcpy(p_formats+vector_len,
p_h->pp_libs[i]->p_supported_input_types,
cur_len);
vector_len+=cur_len;
}
// Null-terminate vector
p_formats=(char*)realloc(p_formats,vector_len+1);
if(p_formats==NULL) return e_XmountInput_Error_Alloc;
p_formats[vector_len]='\0';
*pp_formats=p_formats;
return e_XmountInput_Error_None;
}
/*
* XmountInput_SetOptions
*/
te_XmountInput_Error XmountInput_SetOptions(pts_XmountInputHandle p_h,
char *p_options)
{
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(p_options==NULL) return e_XmountInput_Error_InvalidString;
// Make sure library parameters haven't been set previously
if(p_h->pp_lib_params!=NULL) {
LOG_ERROR("Input library options already set!\n");
return e_XmountInput_Error_LibOptionsAlreadySet;
}
// Save options
if(XmountLib_SplitLibParams(p_options,
&(p_h->lib_params_count),
&(p_h->pp_lib_params))!=0)
{
LOG_ERROR("Unable to parse input library options '%s'!\n",p_options);
return e_XmountInput_Error_FailedParsingOptions;
}
return e_XmountInput_Error_None;
}
/*
* XmountInput_GetOptionsHelpText
*/
te_XmountInput_Error XmountInput_GetOptionsHelpText(pts_XmountInputHandle p_h,
char **pp_help_text)
{
const char *p_buf=NULL;
char *p_help=NULL;
int ret=0;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(pp_help_text==NULL) return e_XmountInput_Error_InvalidBuffer;
// Loop over all loaded libs, extract help and add to our text buffer
// TODO: IMPROVEMENT: Final text should be sorted by lib's name
for(uint32_t i=0;i<p_h->libs_count;i++) {
ret=p_h->pp_libs[i]->lib_functions.OptionsHelp(&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get options help for library '%s': %s!\n",
p_h->pp_libs[i]->p_name,
p_h->pp_libs[i]->lib_functions.GetErrorMessage(ret));
continue;
}
if(p_buf==NULL) continue;
XMOUNT_STRAPP(p_help," - ");
XMOUNT_STRAPP(p_help,p_h->pp_libs[i]->p_name);
XMOUNT_STRAPP(p_help,"\n");
XMOUNT_STRAPP(p_help,p_buf);
XMOUNT_STRAPP(p_help,"\n");
ret=p_h->pp_libs[i]->lib_functions.FreeBuffer(p_buf);
if(ret!=0) {
LOG_ERROR("Unable to free options help text from library '%s': %s!\n",
p_h->pp_libs[i]->p_name,
p_h->pp_libs[i]->lib_functions.GetErrorMessage(ret));
}
}
*pp_help_text=p_help;
return e_XmountInput_Error_None;
}
/*
* XmountInput_GetLibsInfoText
*/
te_XmountInput_Error XmountInput_GetLibsInfoText(pts_XmountInputHandle p_h,
char **pp_info_text)
{
char *p_buf=NULL;
char *p_info_text=NULL;
uint8_t first=0;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(pp_info_text==NULL) return e_XmountInput_Error_InvalidBuffer;
// Loop over all loaded libs, extract name and supported formats and add to
// our text buffer
// TODO: IMPROVEMENT: Final text should be sorted by lib's name
for(uint32_t i=0;i<p_h->libs_count;i++) {
XMOUNT_STRAPP(p_info_text," - ");
XMOUNT_STRAPP(p_info_text,p_h->pp_libs[i]->p_name);
XMOUNT_STRAPP(p_info_text," supporting ");
XMOUNT_STRAPP(p_info_text," - ");
XMOUNT_STRAPP(p_info_text," - ");
p_buf=p_h->pp_libs[i]->p_supported_input_types;
first=1;
while(*p_buf!='\0') {
if(first==1) {
XMOUNT_STRAPP(p_info_text,"\"");
XMOUNT_STRAPP(p_info_text,p_buf);
XMOUNT_STRAPP(p_info_text,"\"");
first=0;
} else {
XMOUNT_STRAPP(p_info_text,", \"");
XMOUNT_STRAPP(p_info_text,p_buf);
XMOUNT_STRAPP(p_info_text,"\"");
}
p_buf+=(strlen(p_buf)+1);
}
XMOUNT_STRAPP(p_info_text,"\n");
}
*pp_info_text=p_info_text;
return e_XmountInput_Error_None;
}
/*
* XmountInput_AddImage
*/
te_XmountInput_Error XmountInput_AddImage(pts_XmountInputHandle p_h,
const char *p_format,
uint64_t files_count,
const char **pp_files)
{
pts_XmountInputImage p_image=NULL;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(p_format==NULL) return e_XmountInput_Error_InvalidString;
if(pp_files==NULL) return e_XmountInput_Error_InvalidArray;
// Alloc and fill new image structure
XMOUNT_CALLOC(p_image,pts_XmountInputImage,sizeof(ts_XmountInputImage));
XMOUNT_STRSET(p_image->p_type,p_format);
p_image->files_count=files_count;
XMOUNT_CALLOC(p_image->pp_files,char**,p_image->files_count*sizeof(char*));
for(uint64_t i=0;i<p_image->files_count;i++) {
XMOUNT_STRSET(p_image->pp_files[i],pp_files[i]);
}
p_image->p_functions=NULL;
p_image->p_handle=NULL;
// TODO: Find lib and open input file
// Add image to our image array
XMOUNT_REALLOC(p_h->pp_images,pts_XmountInputImage*,p_h->images_count+1);
p_h->pp_images[p_h->images_count++]=p_image;
return e_XmountInput_Error_None;
}
/*!
* \brief Get input image count
*
* Get input image count.
*
* \param p_h Input handle
* \param p_count Input image count is returned in this variable
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetImageCount(pts_XmountInputHandle p_h,
uint64_t *p_count)
{
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(p_count==NULL) return e_XmountInput_Error_InvalidBuffer;
*p_count=p_h->images_count;
return e_XmountInput_Error_None;
}
/*
* XmountInput_SetInputOffset
*/
te_XmountInput_Error XmountInput_SetInputOffset(pts_XmountInputHandle p_h,
uint64_t offset)
{
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
LOG_DEBUG("Setting input image offset to \"%" PRIu64 "\"\n",offset);
p_h->image_offset=offset;
return e_XmountInput_Error_None;
}
/*
* XmountInput_SetInputSizeLimit
*/
te_XmountInput_Error XmountInput_SetInputSizeLimit(pts_XmountInputHandle p_h,
uint64_t size_limit)
{
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
LOG_DEBUG("Setting input image size limit to \"%" PRIu64 "\"\n",size_limit);
p_h->image_size_limit=size_limit;
return e_XmountInput_Error_None;
}
/*
* XmountInput_Open
*/
te_XmountInput_Error XmountInput_Open(pts_XmountInputHandle p_h) {
+ int ret=0;
+ const char *p_err_msg;
+ te_XmountInput_Error input_ret=e_XmountInput_Error_None;
+
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
- // TODO: Implement
+ for(uint64_t i=0;i<p_h->images_count;i++) {
+ if(p_h->debug==TRUE) {
+ if(p_h->pp_images[i]->files_count==1) {
+ LOG_DEBUG("Loading image file \"%s\"...\n",
+ p_h->pp_images[i]->pp_files[0]);
+ } else {
+ LOG_DEBUG("Loading image files \"%s .. %s\"...\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->pp_images[i]->
+ pp_files[p_h->pp_images[i]->files_count-1]);
+ }
+ }
+
+ // Find input lib
+ input_ret=XmountInput_FindLib(p_h,p_h->pp_images[i]);
+ if(input_ret!=e_XmountInput_Error_None) {
+ LOG_ERROR("Unable to find input library for input image format '%s' "
+ "of input image '%s': Error code %u!\n",
+ p_h->pp_images[i]->p_type,
+ p_h->pp_images[i]->pp_files[0],
+ input_ret);
+ return input_ret;
+ }
+
+ // Init input image handle
+ ret=p_h->pp_images[i]->p_functions->
+ CreateHandle(&(p_h->pp_images[i]->p_handle),
+ p_h->pp_images[i]->p_type,
+ p_h->debug);
+ if(ret!=0) {
+ LOG_ERROR("Unable to init input handle for input image '%s': %s!\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->pp_images[i]->p_functions->
+ GetErrorMessage(ret));
+ return e_XmountInput_Error_FailedCreatingImageHandle;
+ }
+
+ // Parse input lib specific options
+ if(p_h->pp_lib_params!=NULL) {
+ ret=p_h->pp_images[i]->p_functions->
+ OptionsParse(p_h->pp_images[i]->p_handle,
+ p_h->lib_params_count,
+ p_h->pp_lib_params,
+ &p_err_msg);
+ if(ret!=0) {
+ if(p_err_msg!=NULL) {
+ LOG_ERROR("Unable to parse input library specific options for image "
+ "'%s': %s: %s!\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->pp_images[i]->p_functions->
+ GetErrorMessage(ret),
+ p_err_msg);
+ p_h->pp_images[i]->p_functions->FreeBuffer(p_err_msg);
+ } else {
+ LOG_ERROR("Unable to parse input library specific options for image "
+ "'%s': %s!\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->pp_images[i]->p_functions->
+ GetErrorMessage(ret));
+ }
+ return e_XmountInput_Error_FailedParsingLibParams;
+ }
+ }
+
+ // Open input image
+ ret=p_h->pp_images[i]->p_functions->Open(p_h->pp_images[i]->p_handle,
+ (const char**)(p_h->pp_images[i]->
+ pp_files),
+ p_h->pp_images[i]->files_count);
+ if(ret!=0) {
+ LOG_ERROR("Unable to open input image file '%s': %s!\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->pp_images[i]->p_functions->
+ GetErrorMessage(ret));
+ return e_XmountInput_Error_FailedOpeningImage;
+ }
+
+ // Determine input image size
+ ret=p_h->pp_images[i]->p_functions->Size(p_h->pp_images[i]->p_handle,
+ &(p_h->pp_images[i]->size));
+ if(ret!=0) {
+ LOG_ERROR("Unable to determine size of input image '%s': %s!\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->pp_images[i]->
+ p_functions->GetErrorMessage(ret));
+ return e_XmountInput_Error_FailedGettingImageSize;
+ }
+
+ // If an offset was specified, check it against offset and change size
+ if(p_h->image_offset!=0) {
+ if(p_h->image_offset>p_h->pp_images[i]->size) {
+ LOG_ERROR("The specified offset is larger than the size of the input "
+ "image '%s'! (%" PRIu64 " > %" PRIu64 ")\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->image_offset,
+ p_h->pp_images[i]->size);
+ return e_XmountInput_Error_OffsetExceedsImageSize;
+ }
+ p_h->pp_images[i]->size-=p_h->image_offset;
+ }
+
+ // If a size limit was specified, check it and change size
+ if(p_h->image_size_limit!=0) {
+ if(p_h->pp_images[i]->size<p_h->image_size_limit) {
+ LOG_ERROR("The specified size limit is larger than the size of the "
+ "input image '%s'! (%" PRIu64 " > %" PRIu64 ")\n",
+ p_h->pp_images[i]->pp_files[0],
+ p_h->image_size_limit,
+ p_h->pp_images[i]->size);
+ return e_XmountInput_Error_SizelimitExceedsImageSize;
+ }
+ p_h->pp_images[i]->size=p_h->image_size_limit;
+ }
+
+ LOG_DEBUG("Input image loaded successfully\n")
+ }
return e_XmountInput_Error_None;
}
/*
* XmountInput_Close
*/
te_XmountInput_Error XmountInput_Close(pts_XmountInputHandle p_h) {
int ret=0;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(p_h->pp_images!=NULL) {
// Close all input images
for(uint64_t i=0;i<p_h->images_count;i++) {
if(p_h->pp_images[i]==NULL) continue;
if(p_h->pp_images[i]->p_functions!=NULL) {
if(p_h->pp_images[i]->p_handle!=NULL) {
ret=p_h->pp_images[i]->p_functions->
Close(p_h->pp_images[i]->p_handle);
if(ret!=0) {
LOG_ERROR("Unable to close input image '%s': %s\n",
p_h->pp_images[i]->pp_files[0]!=NULL ?
p_h->pp_images[i]->pp_files[0] : "n/a",
p_h->pp_images[i]->p_functions->GetErrorMessage(ret));
}
ret=p_h->pp_images[i]->p_functions->
DestroyHandle(&(p_h->pp_images[i]->p_handle));
if(ret!=0) {
LOG_ERROR("Unable to destroy handle of input image '%s': %s\n",
p_h->pp_images[i]->pp_files[0]!=NULL ?
p_h->pp_images[i]->pp_files[0] : "n/a",
p_h->pp_images[i]->p_functions->GetErrorMessage(ret));
}
p_h->pp_images[i]->p_handle=NULL;
}
}
if(p_h->pp_images[i]->pp_files!=NULL) {
for(uint64_t ii=0;ii<p_h->pp_images[i]->files_count;ii++) {
if(p_h->pp_images[i]->pp_files[ii]!=NULL)
XMOUNT_FREE(p_h->pp_images[i]->pp_files[ii]);
}
XMOUNT_FREE(p_h->pp_images[i]->pp_files);
}
if(p_h->pp_images[i]->p_type!=NULL) {
XMOUNT_FREE(p_h->pp_images[i]->p_type);
}
XMOUNT_FREE(p_h->pp_images[i]);
}
XMOUNT_FREE(p_h->pp_images);
}
return e_XmountInput_Error_None;
}
/*
* XmountInput_GetSize
*/
te_XmountInput_Error XmountInput_GetSize(pts_XmountInputHandle p_h,
uint64_t image_nr,
uint64_t *p_size)
{
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(image_nr>=p_h->images_count) return e_XmountInput_Error_NoSuchImage;
if(p_size==NULL) return e_XmountInput_Error_InvalidBuffer;
*p_size=p_h->pp_images[image_nr]->size;
return e_XmountInput_Error_None;
}
/*
* XmountInput_ReadData
*/
te_XmountInput_Error XmountInput_ReadData(pts_XmountInputHandle p_h,
uint64_t image_nr,
char *p_buf,
uint64_t offset,
uint64_t count,
uint64_t *p_read)
{
+ uint64_t to_read=0;
int ret=0;
+ int read_errno=0;
+ pts_XmountInputImage p_image=NULL;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(image_nr>=p_h->images_count) return e_XmountInput_Error_NoSuchImage;
if(p_buf==NULL) return e_XmountInput_Error_InvalidBuffer;
+ p_image=p_h->pp_images[image_nr];
- // TODO: Implement
-/*
- ret=ReadInputImageData(glob_xmount.input.pp_images[image],
- p_buf,
- offset,
- count,
- p_read);
-*/
+ LOG_DEBUG("Reading %zu bytes at offset %zu from input image '%s'\n",
+ count,
+ offset,
+ p_image->pp_files[0]);
+
+ // Make sure we aren't reading past EOF of image file
+ if(offset>=p_image->size) {
+ // Offset is beyond image size
+ LOG_DEBUG("Offset %zu is at / beyond size of input image '%s'\n",
+ offset,
+ p_image->pp_files[0]);
+ *p_read=0;
+ return 0;
+ }
+ if(offset+count>p_image->size) {
+ // Attempt to read data past EOF of image file
+ to_read=p_image->size-offset;
+ LOG_DEBUG("Attempt to read data past EOF of input image '%s'. "
+ "Correcting size from %zu to %zu\n",
+ p_image->pp_files[0],
+ count,
+ to_read);
+ } else to_read=count;
+
+ // Read data from image file (adding input image offset if one was specified)
+ ret=p_image->p_functions->Read(p_image->p_handle,
+ p_buf,
+ offset+p_h->image_offset,
+ to_read,
+ p_read,
+ &read_errno);
+ if(ret!=0) {
+ LOG_ERROR("Couldn't read %zu bytes at offset %zu from input image "
+ "'%s': %s: Error code %u!\n",
+ to_read,
+ offset,
+ p_image->pp_files[0],
+ p_image->p_functions->GetErrorMessage(ret),
+ read_errno);
+ return e_XmountInput_Error_FailedReadingData;
+ }
return e_XmountInput_Error_None;
}
/*
* XmountInput_WriteData
*/
te_XmountInput_Error XmountInput_WriteData(pts_XmountInputHandle p_h,
uint64_t image_nr,
const char *p_buf,
uint64_t offset,
uint64_t count)
{
// TODO: Implement
return e_XmountInput_Error_None;
}
/*
* XmountInput_GetInfoFileContent
*/
te_XmountInput_Error XmountInput_GetInfoFileContent(pts_XmountInputHandle p_h,
char **pp_content)
{
int ret=0;
char *p_buf=NULL;
char *p_content=NULL;
// Params check
if(p_h==NULL) return e_XmountInput_Error_InvalidHandle;
if(pp_content==NULL) return e_XmountInput_Error_InvalidBuffer;
for(uint64_t i=0;i<p_h->images_count;i++) {
ret=p_h->pp_images[i]->p_functions->
GetInfofileContent(p_h->pp_images[i]->p_handle,(const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get info file content for image '%s': %s!\n",
p_h->pp_images[i]->pp_files[0],
p_h->pp_images[i]->p_functions->GetErrorMessage(ret));
return e_XmountInput_Error_FailedGettingInfoFileContent;
}
// Add infos to main buffer and free p_buf
XMOUNT_STRAPP(p_content,"\n--> ");
XMOUNT_STRAPP(p_content,p_h->pp_images[i]->pp_files[0]);
XMOUNT_STRAPP(p_content," <--\n");
if(p_buf!=NULL) {
XMOUNT_STRAPP(p_content,p_buf);
p_h->pp_images[i]->p_functions->FreeBuffer(p_buf);
} else {
XMOUNT_STRAPP(p_content,"None\n");
}
}
*pp_content=p_content;
return e_XmountInput_Error_None;
}
/*******************************************************************************
* Private functions implementations
******************************************************************************/
/*
* FindInputLib
*/
-te_XmountInput_Error FindInputLib(pts_XmountInputHandle p_h,
- pts_XmountInputImage p_input_image)
+te_XmountInput_Error XmountInput_FindLib(pts_XmountInputHandle p_h,
+ pts_XmountInputImage p_input_image)
{
char *p_buf;
LOG_DEBUG("Trying to find suitable library for input type '%s'.\n",
p_input_image->p_type);
// Loop over all loaded libs
for(uint32_t i=0;i<p_h->libs_count;i++) {
LOG_DEBUG("Checking input library %s\n",p_h->pp_libs[i]->p_name);
p_buf=p_h->pp_libs[i]->p_supported_input_types;
while(*p_buf!='\0') {
if(strcmp(p_buf,p_input_image->p_type)==0) {
// Library supports input type, set lib functions
LOG_DEBUG("Input library '%s' pretends to handle that input type.\n",
p_h->pp_libs[i]->p_name);
p_input_image->p_functions=&(p_h->pp_libs[i]->lib_functions);
return e_XmountInput_Error_None;
}
p_buf+=(strlen(p_buf)+1);
}
}
LOG_DEBUG("Couldn't find any suitable library.\n");
// No library supporting input type found
return e_XmountInput_Error_UnsupportedFormat;
}
-
-//! Read data from input image
-/*!
- * \param p_image Image from which to read data
- * \param p_buf Pointer to buffer to write read data to (must be preallocated!)
- * \param offset Offset at which data should be read
- * \param size Size of data which should be read (size of buffer)
- * \param p_read Number of read bytes on success
- * \return 0 on success, negated error code on error
- */
-/*
-int ReadInputImageData(pts_InputImage p_image,
- char *p_buf,
- off_t offset,
- size_t size,
- size_t *p_read)
-{
- int ret;
- size_t to_read=0;
- int read_errno=0;
-
- LOG_DEBUG("Reading %zu bytes at offset %zu from input image '%s'\n",
- size,
- offset,
- p_image->pp_files[0]);
-
- // Make sure we aren't reading past EOF of image file
- if(offset>=p_image->size) {
- // Offset is beyond image size
- LOG_DEBUG("Offset %zu is at / beyond size of input image '%s'\n",
- offset,
- p_image->pp_files[0]);
- *p_read=0;
- return 0;
- }
- if(offset+size>p_image->size) {
- // Attempt to read data past EOF of image file
- to_read=p_image->size-offset;
- LOG_DEBUG("Attempt to read data past EOF of input image '%s'. "
- "Correcting size from %zu to %zu\n",
- p_image->pp_files[0],
- size,
- to_read);
- } else to_read=size;
-
- // Read data from image file (adding input image offset if one was specified)
- ret=p_image->p_functions->Read(p_image->p_handle,
- p_buf,
- offset+glob_xmount.input.image_offset,
- to_read,
- p_read,
- &read_errno);
- if(ret!=0) {
- LOG_ERROR("Couldn't read %zu bytes at offset %zu from input image "
- "'%s': %s!\n",
- to_read,
- offset,
- p_image->pp_files[0],
- p_image->p_functions->GetErrorMessage(ret));
- if(read_errno==0) return -EIO;
- else return (read_errno*(-1));
- }
-
- return 0;
-}
-*/
diff --git a/src/xmount_input.h b/src/xmount_input.h
index 287895f..6fed491 100644
--- a/src/xmount_input.h
+++ b/src/xmount_input.h
@@ -1,342 +1,329 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#ifndef XMOUNT_INPUT_H
#define XMOUNT_INPUT_H
#include <stdint.h>
/*******************************************************************************
* Public definitions / macros
******************************************************************************/
//! Naming scheme of input libraries
#define XMOUNT_INPUT_LIBRARY_NAMING_SCHEME "libxmount_input_"
/*******************************************************************************
* Public types / structures / enums
******************************************************************************/
typedef struct s_XmountInputHandle *pts_XmountInputHandle;
typedef enum e_XmountInput_Error {
//! No error
e_XmountInput_Error_None=0,
//! Error to allocate memory
e_XmountInput_Error_Alloc,
//! Invalid input handle
e_XmountInput_Error_InvalidHandle,
//! Invalid pointer to an input handle
e_XmountInput_Error_InvalidHandlePointer,
//! A given buffer is invalid
e_XmountInput_Error_InvalidBuffer,
//! A given string is invalid
e_XmountInput_Error_InvalidString,
//! A given array is invalid
e_XmountInput_Error_InvalidArray,
//! Library options have already been set
e_XmountInput_Error_LibOptionsAlreadySet,
//! Library options couldn't be parsed
e_XmountInput_Error_FailedParsingOptions,
//! Unable to get info file content from library
e_XmountInput_Error_FailedGettingInfoFileContent,
//! Unable to load library file
e_XmountInput_Error_FailedLoadingLibrary,
+ //! Unable to load a library symbol
+ e_XmountInput_Error_FailedLoadingSymbol,
//! Library has wrong API version
e_XmountInput_Error_WrongLibraryApiVersion,
//! Library is missing a function
e_XmountInput_Error_MissingLibraryFunction,
//! Unsupported input image format
e_XmountInput_Error_UnsupportedFormat,
//! Specified image number is incorrect
e_XmountInput_Error_NoSuchImage,
-/*
-
- //! A given file path / name is invalid
- e_XmountCache_Error_InvalidFile,
- //! A given file does not exist
- e_XmountCache_Error_InexistingFile,
- //! A given file exists
- e_XmountCache_Error_ExistingFile,
- //! Unable to create needed xmount structures inside cache file
- e_XmountCache_Error_FailedCacheInit,
- //! Unable to open xmount cache file
- e_XmountCache_Error_FailedOpeningCache,
- //! Failed to get block cache index size
- e_XmountCache_Error_FailedGettingIndexSize,
- //! Invalid block cache index size
- e_XmountCache_Error_InvalidIndexSize,
- //! Unable to read block cache index
- e_XmountCache_Error_FailedReadingIndex,
- //! Failed closing cache block index
- e_XmountCache_Error_FailedClosingIndex,
- //! Failed closing cache block index
- e_XmountCache_Error_FailedClosingBlockCache,
- //! Failed closing cache block index
- e_XmountCache_Error_FailedClosingCache,
- //! Failed to update block cache index
- e_XmountCache_Error_FailedUpdatingIndex,
- //! Invalid block cache index specified
- e_XmountCache_Error_InvalidIndex,
- //! Block has not yet been cached
- e_XmountCache_Error_UncachedBlock,
- //! Invalid buffer specified
- e_XmountCache_Error_InvalidBuffer,
- //! Request would read beyond a single cache block
- e_XmountCache_Error_ReadBeyondBlockBounds,
- //! Failed reading cached data
- e_XmountCache_Error_FailedReadingBlockCache,
- //! Failed writing cached data
- e_XmountCache_Error_FailedWritingBlockCache,
-*/
+ //! Unable to create input image handle
+ e_XmountInput_Error_FailedCreatingImageHandle,
+ //! Unable to parse input library options
+ e_XmountInput_Error_FailedParsingLibParams,
+ //! Unable to open input image
+ e_XmountInput_Error_FailedOpeningImage,
+ //! Unable to get image size
+ e_XmountInput_Error_FailedGettingImageSize,
+ //! A specified offset is larger than a specified image
+ e_XmountInput_Error_OffsetExceedsImageSize,
+ //! A specified size limit is larger than a specified image
+ e_XmountInput_Error_SizelimitExceedsImageSize,
+ //! Unable to read data from input image
+ e_XmountInput_Error_FailedReadingData
} te_XmountInput_Error;
/*******************************************************************************
* Public functions declarations
******************************************************************************/
/*!
* \brief Create new input handle
*
* Creates a new input handle.
*
* \param pp_h Pointer to input handle
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_CreateHandle(pts_XmountInputHandle *pp_h);
/*!
* \brief Destroy input handle
*
* Invalidates the given handle and frees all used resources.
*
* \param pp_h Pointer to input handle
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_DestroyHandle(pts_XmountInputHandle *pp_h);
+/*!
+ * \brief Enable internal debugging
+ *
+ * Enables the generation of intrernal debugging messages.
+ *
+ * \param p_h Input handle
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountInput_Error XmountInput_EnableDebugging(pts_XmountInputHandle p_h);
+
/*!
* \brief Load an input library
*
* Loads a given input library.
*
* \param p_h Input handle
* \param p_lib Library name (without path)
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_AddLibrary(pts_XmountInputHandle p_h,
const char *p_lib_name);
/*!
* \brief Get loaded input library count
*
* Returns the number of successfully loaded input libraries.
*
* \param p_h Input handle
* \param p_count Library count is returned in this variable
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetLibraryCount(pts_XmountInputHandle p_h,
uint32_t *p_count);
/*!
* \brief Return all supported formats
*
* Returns a null-terminated vector of all supported input formats.
*
* The returned vector must be freed by the caller.
*
* \param p_h Input handle
* \param pp_formats Supported formats vector is returned in this var
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetSupportedFormats(pts_XmountInputHandle p_h,
char **pp_formats);
/*!
* \brief Set library options
*
* Parses the given library option string (as given after --inopts).
*
* \param p_h Input handle
* \param p_options Library option string
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_SetOptions(pts_XmountInputHandle p_h,
char *p_options);
/*!
* \brief Return all library specific option help texts
*
* Returns a string containing help messages for all loaded input lib options.
* The string is pre-formated to be used in xmount's help output.
*
* The caller must free the returned string.
*
* \param p_h Input handle
* \param pp_help_text Help text is returned in this parameter
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetOptionsHelpText(pts_XmountInputHandle p_h,
char **pp_help_text);
/*!
* \brief Returns a string containing infos about loaded libs
*
* Returns a string containing infos about loaded input libraries. The string is
* pre-formated to be used in xmount's info output.
*
* The caller must free the returned string.
*
* \param p_h Input handle
* \param pp_info_text Info text is returned in this parameter
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetLibsInfoText(pts_XmountInputHandle p_h,
char **pp_info_text);
/*!
* \brief Add an input image
*
* Adds the given input image to the list of available input images.
*
* \param p_h Input handle
* \param p_format Input image format string as given by the user
* \param files_count Amount of files specified by the user
* \param pp_files Array containing all specified files
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_AddImage(pts_XmountInputHandle p_h,
const char *p_format,
uint64_t files_count,
const char **pp_files);
/*!
* \brief Get input image count
*
* Get input image count.
*
* \param p_h Input handle
* \param p_count Input image count is returned in this variable
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetImageCount(pts_XmountInputHandle p_h,
uint64_t *p_count);
/*!
* \brief Set an input image offset
*
* Sets the amount of bytes that should be ignored at the beginning of every
* input image.
*
* \param p_h Input handle
* \param offset Amount of bytes to ignore
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_SetInputOffset(pts_XmountInputHandle p_h,
uint64_t offset);
/*!
* \brief Set an input image size limit
*
* Sets the amount of bytes that should be ignored at the end of every
* input image.
*
* \param p_h Input handle
* \param size_limit Amount of bytes to ignore
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_SetInputSizeLimit(pts_XmountInputHandle p_h,
uint64_t size_limit);
/*!
* \brief Opens all added input images
*
* Opens all added input images.
*
* \param p_h Input handle
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_Open(pts_XmountInputHandle p_h);
/*!
* \brief Closes all previously opened input images
*
* Closes all previously opened input images.
*
* \param p_h Input handle
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_Close(pts_XmountInputHandle p_h);
/*!
* \brief Get the size of an input image
*
* Returns the size (in bytes) of the specified input image.
*
* \param p_h Input handle
* \param image_nr Image number for which to return the size
* \param p_size On success, size is returned in this variable
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetSize(pts_XmountInputHandle p_h,
uint64_t image_nr,
uint64_t *p_size);
/*!
* \brief Read data from an input image
*
* Reads count bytes from input image image_nr starting at given offset and
* copies the data into p_buf.
*
* The given buffer must be pre-allocated to hold as many bytes as should be
* read!
*
* \param p_h Input handle
* \param image_nr Image number for which to return the size
* \param p_buf Buffer into which to copy read data
* \param offset Offset at which to start reading
* \param count Amount of bytes to read
* \param p_read On success, amount of bytes read is returned in this variable
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_ReadData(pts_XmountInputHandle p_h,
uint64_t image_nr,
char *p_buf,
uint64_t offset,
uint64_t count,
uint64_t *p_read);
te_XmountInput_Error XmountInput_WriteData(pts_XmountInputHandle p_h,
uint64_t image_nr,
const char *p_buf,
uint64_t offset,
uint64_t count);
/*!
* \brief Get info text to be added to xmount's info file
*
* Generates a string containing informations about currently opened input
* images.
*
* The caller must free the returned string.
*
* \param p_h Input handle
* \param pp_content Buffer in which text is returned
* \return e_XmountInput_Error_None on success
*/
te_XmountInput_Error XmountInput_GetInfoFileContent(pts_XmountInputHandle p_h,
char **pp_content);
#endif // XMOUNT_INPUT_H
diff --git a/src/xmount_morphing.c b/src/xmount_morphing.c
index ea3fb42..ed691b2 100644
--- a/src/xmount_morphing.c
+++ b/src/xmount_morphing.c
@@ -1,316 +1,820 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
-#include <errno.h>
+#include <stdlib.h> // For calloc
#include <string.h> // For memcpy
+#include <dlfcn.h> // For dlopen, dlclose, dlsym
+#include "../libxmount_morphing/libxmount_morphing.h"
#include "xmount_morphing.h"
#include "xmount.h"
#include "macros.h"
+/*******************************************************************************
+ * Private definitions / macros
+ ******************************************************************************/
+
#define LOG_WARNING(...) { \
LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
}
#define LOG_ERROR(...) { \
LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
}
#define LOG_DEBUG(...) { \
LIBXMOUNT_LOG_DEBUG(glob_xmount.debug,__VA_ARGS__); \
}
-//! Get size of morphed image
+/*******************************************************************************
+ * Private types / structures / enums
+ ******************************************************************************/
+
+//! Structure containing infos about morphing libs
+typedef struct s_XmountMorphingLib {
+ //! Filename of lib (without path)
+ char *p_name;
+ //! Handle to the loaded lib
+ void *p_lib;
+ //! Array of supported morphing types
+ char *p_supported_morphing_types;
+ //! Struct containing lib functions
+ ts_LibXmountMorphingFunctions lib_functions;
+} ts_XmountMorphingLib, *pts_XmountMorphingLib;
+
+//! Structures and vars needed for morph support
+typedef struct s_XmountMorphHandle {
+ //! Loaded morphing lib count
+ uint32_t libs_count;
+ //! Array containing infos about loaded morphing libs
+ pts_XmountMorphingLib *pp_libs;
+ //! Specified morphing type (--morph)
+ char *p_morph_type;
+ //! Amount of specified morphing lib params (--morphopts)
+ uint32_t lib_params_count;
+ //! Specified morphing lib params (--morphopts)
+ pts_LibXmountOptions *pp_lib_params;
+ //! Handle to initialized morphing lib
+ void *p_handle;
+ //! Morphing functions of initialized lib
+ pts_LibXmountMorphingFunctions p_functions;
+ //! Input image functions passed to morphing lib
+ ts_LibXmountMorphingInputFunctions input_image_functions;
+} ts_XmountMorphHandle;
+
+/*******************************************************************************
+ * Private functions declarations
+ ******************************************************************************/
/*!
- * \param p_size Buf to save size to
- * \return TRUE on success, FALSE on error
+ * \brief Find an input lib for a given input image
+ *
+ * Searches trough the list of loaded input libraries to find one that supports
+ * the given input image's format. On success, that library is associated with
+ * the given image.
+ *
+ * \param p_h Input handle
+ * \param p_input_image Input image to search input lib for
+ * \return e_XmountInput_Error_None on success
*/
-int GetMorphedImageSize(uint64_t *p_size) {
- int ret;
+/*
+te_XmountInput_Error XmountInput_FindLib(pts_XmountInputHandle p_h,
+ pts_XmountInputImage p_input_image);
+*/
+
+/*******************************************************************************
+ * Public functions implementations
+ ******************************************************************************/
+/*
+ * XmountMorphing_CreateHandle
+ */
+te_XmountMorphError XmountMorphing_CreateHandle(pts_XmountMorphHandle *pp_h) {
+ // Params check
+ if(pp_h==NULL) return e_XmountMorphError_InvalidHandlePointer;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_DestroyHandle
+ */
+te_XmountMorphError XmountMorphing_DestroyHandle(pts_XmountMorphHandle *pp_h) {
+ // Params check
+ if(pp_h==NULL) return e_XmountMorphError_InvalidHandlePointer;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_EnableDebugging
+ */
+te_XmountMorphError XmountMorphing_EnableDebugging(pts_XmountMorphHandle p_h) {
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_AddLibrary
+ */
+te_XmountMorphError XmountMorphing_AddLibrary(pts_XmountMorphHandle p_h,
+ const char *p_lib_name)
+{
+ uint32_t supported_types_len=0;
+ t_LibXmount_Morphing_GetApiVersion pfun_morphing_GetApiVersion;
+ t_LibXmount_Morphing_GetSupportedTypes pfun_morphing_GetSupportedTypes;
+ t_LibXmount_Morphing_GetFunctions pfun_morphing_GetFunctions;
+ void *p_libxmount=NULL;
+ pts_XmountMorphingLib p_morphing_lib=NULL;
+ char *p_buf=NULL;
+ char *p_library_path=NULL;
+ char *p_supported_types=NULL;
+
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(p_lib_name==NULL) return e_XmountMorphError_InvalidString;
+
+ // Construct full library path
+ XMOUNT_STRSET(p_library_path,XMOUNT_LIBRARY_PATH);
+ if(p_library_path[strlen(p_library_path)]!='/') {
+ XMOUNT_STRAPP(p_library_path,"/");
+ }
+ XMOUNT_STRAPP(p_library_path,p_lib_name);
+
+#define XMOUNTMORPHING_LOADLIBS__LOAD_SYMBOL(name,pfun) { \
+ if((pfun=dlsym(p_libxmount,name))==NULL) { \
+ LOG_ERROR("Unable to load symbol '%s' from library '%s'!\n", \
+ name, \
+ p_library_path); \
+ dlclose(p_libxmount); \
+ return e_XmountMorphError_FailedLoadingSymbol; \
+ } \
+}
+
+ // Try to load given library
+ p_libxmount=dlopen(p_library_path,RTLD_NOW);
+ if(p_libxmount==NULL) {
+ LOG_ERROR("Unable to load morphing library '%s': %s!\n",
+ p_library_path,
+ dlerror());
+ return e_XmountMorphError_FailedLoadingLibrary;
+ }
+
+ // Load library symbols
+ XMOUNTMORPHING_LOADLIBS__LOAD_SYMBOL("LibXmount_Morphing_GetApiVersion",
+ pfun_morphing_GetApiVersion);
+
+ // Check library's API version
+ if(pfun_morphing_GetApiVersion()!=LIBXMOUNT_MORPHING_API_VERSION) {
+ LOG_DEBUG("Failed! Wrong API version.\n");
+ LOG_ERROR("Unable to load morphing library '%s'. Wrong API version\n",
+ p_library_path);
+ dlclose(p_libxmount);
+ return e_XmountMorphError_WrongLibraryApiVersion;
+ }
+
+ LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetSupportedTypes",
+ pfun_morphing_GetSupportedTypes);
+ LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetFunctions",
+ pfun_morphing_GetFunctions);
+
+ // Construct new entry for our library list
+ XMOUNT_MALLOC(p_morphing_lib,
+ pts_XmountMorphingLib,
+ sizeof(ts_XmountMorphingLib));
+ // Initialize lib_functions structure to NULL
+ memset(&(p_morphing_lib->lib_functions),
+ 0,
+ sizeof(ts_LibXmountMorphingFunctions));
+
+ // Set name and handle
+ XMOUNT_STRSET(p_morphing_lib->p_name,p_lib_name);
+ p_morphing_lib->p_lib=p_libxmount;
+
+ // Get and set supported types
+ p_supported_types=pfun_morphing_GetSupportedTypes();
+ supported_types_len=0;
+ p_buf=p_supported_types;
+ while(*p_buf!='\0') {
+ supported_types_len+=(strlen(p_buf)+1);
+ p_buf+=(strlen(p_buf)+1);
+ }
+ supported_types_len++;
+ XMOUNT_MALLOC(p_morphing_lib->p_supported_morphing_types,
+ char*,
+ supported_types_len);
+ memcpy(p_morphing_lib->p_supported_morphing_types,
+ p_supported_types,
+ supported_types_len);
+
+ // Get, set and check lib_functions
+ pfun_morphing_GetFunctions(&(p_morphing_lib->lib_functions));
+ if(p_morphing_lib->lib_functions.CreateHandle==NULL ||
+ p_morphing_lib->lib_functions.DestroyHandle==NULL ||
+ p_morphing_lib->lib_functions.Morph==NULL ||
+ p_morphing_lib->lib_functions.Size==NULL ||
+ p_morphing_lib->lib_functions.Read==NULL ||
+ p_morphing_lib->lib_functions.OptionsHelp==NULL ||
+ p_morphing_lib->lib_functions.OptionsParse==NULL ||
+ p_morphing_lib->lib_functions.GetInfofileContent==NULL ||
+ p_morphing_lib->lib_functions.GetErrorMessage==NULL ||
+ p_morphing_lib->lib_functions.FreeBuffer==NULL)
+ {
+ LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
+ p_lib_name);
+ XMOUNT_FREE(p_morphing_lib->p_supported_morphing_types);
+ XMOUNT_FREE(p_morphing_lib->p_name);
+ XMOUNT_FREE(p_morphing_lib);
+ dlclose(p_libxmount);
+ return e_XmountMorphError_MissingLibraryFunction;
+ }
+
+ // Add entry to the input library list
+ XMOUNT_REALLOC(p_h->pp_libs,
+ pts_XmountMorphingLib*,
+ sizeof(pts_XmountMorphingLib)*(p_h->libs_count+1));
+ p_h->pp_libs[p_h->libs_count++]=p_morphing_lib;
+
+ LOG_DEBUG("Morphing library '%s' loaded successfully\n",p_lib_name);
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_GetLibraryCount
+ */
+te_XmountMorphError XmountMorphing_GetLibraryCount(pts_XmountMorphHandle p_h,
+ uint32_t *p_count)
+{
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_GetSupportedTypes
+ */
+te_XmountMorphError XmountMorphing_GetSupportedTypes(pts_XmountMorphHandle p_h,
+ char **pp_types)
+{
+ char *p_buf=NULL;
+ char *p_types=NULL;
+ uint32_t cur_len=0;
+ uint32_t vector_len=0;
+
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(pp_types==NULL) return e_XmountMorphError_InvalidBuffer;
+
+ // Loop over all loaded libs, extract supported types and add to our vector
+ // TODO: IMPROVEMENT: Final vector could be sorted
+ for(uint32_t i=0;i<p_h->libs_count;i++) {
+ p_buf=p_h->pp_libs[i]->p_supported_morphing_types;
+ while(p_buf!=NULL && *p_buf!='\0') p_buf+=(strlen(p_buf)+1);
+ cur_len=(uint32_t)(p_buf-p_h->pp_libs[i]->p_supported_morphing_types);
+ if(cur_len==0) continue;
+ p_types=(char*)realloc(p_types,vector_len+cur_len);
+ if(p_types==NULL) return e_XmountInput_Error_Alloc;
+ memcpy(p_types+vector_len,
+ p_h->pp_libs[i]->p_supported_morphing_types,
+ cur_len);
+ vector_len+=cur_len;
+ }
+
+ // Null-terminate vector
+ p_types=(char*)realloc(p_types,vector_len+1);
+ if(p_types==NULL) return e_XmountInput_Error_Alloc;
+ p_types[vector_len]='\0';
+
+ *pp_types=p_types;
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_SetOptions
+ */
+te_XmountMorphError XmountMorphing_SetOptions(pts_XmountMorphHandle p_h,
+ char *p_options)
+{
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(p_options==NULL) return e_XmountMorphError_InvalidString;
+
+ // Make sure library parameters haven't been set previously
+ if(p_h->pp_lib_params!=NULL) {
+ LOG_ERROR("Morphing library options already set!\n");
+ return e_XmountMorphError_LibOptionsAlreadySet;
+ }
- ret=glob_xmount.morphing.p_functions->Size(glob_xmount.morphing.p_handle,
- p_size);
+ // Save options
+ if(XmountLib_SplitLibParams(p_options,
+ &(p_h->lib_params_count),
+ &(p_h->pp_lib_params))!=0)
+ {
+ LOG_ERROR("Unable to parse morphing library options '%s'!\n",p_options);
+ return e_XmountMorphError_FailedParsingOptions;
+ }
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_GetOptionsHelpText
+ */
+te_XmountMorphError XmountMorphing_GetOptionsHelpText(pts_XmountMorphHandle p_h,
+ char **pp_help_text)
+{
+ const char *p_buf=NULL;
+ char *p_help=NULL;
+ int ret=0;
+
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(pp_help_text==NULL) return e_XmountMorphError_InvalidBuffer;
+
+ // Loop over all loaded libs, extract help and add to our text buffer
+ // TODO: IMPROVEMENT: Final text should be sorted by lib's name
+ for(uint32_t i=0;i<p_h->libs_count;i++) {
+ ret=p_h->pp_libs[i]->lib_functions.OptionsHelp(&p_buf);
+ if(ret!=0) {
+ LOG_ERROR("Unable to get options help for library '%s': %s!\n",
+ p_h->pp_libs[i]->p_name,
+ p_h->pp_libs[i]->lib_functions.GetErrorMessage(ret));
+ continue;
+ }
+ if(p_buf==NULL) continue;
+ XMOUNT_STRAPP(p_help," - ");
+ XMOUNT_STRAPP(p_help,p_h->pp_libs[i]->p_name);
+ XMOUNT_STRAPP(p_help,"\n");
+ XMOUNT_STRAPP(p_help,p_buf);
+ XMOUNT_STRAPP(p_help,"\n");
+ p_h->pp_libs[i]->lib_functions.FreeBuffer(p_buf);
+ }
+
+ *pp_help_text=p_help;
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphingt_GetLibsInfoText
+ */
+te_XmountMorphError XmountMorphing_GetLibsInfoText(pts_XmountMorphHandle p_h,
+ char **pp_info_text)
+{
+ char *p_buf=NULL;
+ char *p_info_text=NULL;
+ uint8_t first=0;
+
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(pp_info_text==NULL) return e_XmountMorphError_InvalidBuffer;
+
+ // Loop over all loaded libs, extract name and supported types and add to
+ // our text buffer
+ // TODO: IMPROVEMENT: Final text should be sorted by lib's name
+ for(uint32_t i=0;i<p_h->libs_count;i++) {
+ XMOUNT_STRAPP(p_info_text," - ");
+ XMOUNT_STRAPP(p_info_text,p_h->pp_libs[i]->p_name);
+ XMOUNT_STRAPP(p_info_text," supporting ");
+ XMOUNT_STRAPP(p_info_text," - ");
+ XMOUNT_STRAPP(p_info_text," - ");
+ p_buf=p_h->pp_libs[i]->p_supported_morphing_types;
+ first=1;
+ while(*p_buf!='\0') {
+ if(first==1) {
+ XMOUNT_STRAPP(p_info_text,"\"");
+ XMOUNT_STRAPP(p_info_text,p_buf);
+ XMOUNT_STRAPP(p_info_text,"\"");
+ first=0;
+ } else {
+ XMOUNT_STRAPP(p_info_text,", \"");
+ XMOUNT_STRAPP(p_info_text,p_buf);
+ XMOUNT_STRAPP(p_info_text,"\"");
+ }
+ p_buf+=(strlen(p_buf)+1);
+ }
+ XMOUNT_STRAPP(p_info_text,"\n");
+ }
+
+ *pp_info_text=p_info_text;
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_SetType
+ */
+te_XmountMorphError XmountMorphing_SetType(pts_XmountMorphHandle p_h,
+ char *p_type)
+{
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(p_type==NULL) return e_XmountMorphError_InvalidString;
+
+ XMOUNT_STRSET(p_h->p_morph_type,p_type);
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_StartMorph
+ */
+te_XmountMorphError XmountMorphing_StartMorph(pts_XmountMorphHandle p_h) {
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountInput_StopMorph
+ */
+te_XmountMorphError XmountInput_StopMorph(pts_XmountMorphHandle p_h) {
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_GetSize
+ */
+te_XmountMorphError XmountMorphing_GetSize(pts_XmountMorphHandle p_h,
+ uint64_t *p_size)
+{
+ int ret=0;
+
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(p_size==NULL) return e_XmountMorphError_InvalidBuffer;
+
+ // Get morphed image size
+ ret=p_h->p_functions->Size(p_h->p_handle,p_size);
if(ret!=0) {
LOG_ERROR("Unable to get morphed image size: %s!\n",
- glob_xmount.morphing.p_functions->GetErrorMessage(ret));
- return FALSE;
+ p_h->p_functions->GetErrorMessage(ret));
+ return e_XmountMorphError_FailedGettingImageSize;
}
- return TRUE;
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_ReadData
+ */
+te_XmountMorphError XmountMorphing_ReadData(pts_XmountMorphHandle p_h,
+ char *p_buf,
+ uint64_t offset,
+ uint64_t count,
+ uint64_t *p_read)
+{
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
+}
+
+/*
+ * XmountMorphing_WriteData
+ */
+te_XmountMorphError XmountMorphing_WriteData(pts_XmountMorphHandle p_h,
+ const char *p_buf,
+ uint64_t offset,
+ uint64_t count)
+{
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+
+ // TODO: Impement
+
+ return e_XmountMorphError_None;
}
+/*
+ * XmountMorphing_GetInfoFileContent
+ */
+te_XmountMorphError XmountMorphing_GetInfoFileContent(pts_XmountMorphHandle p_h,
+ char **pp_content)
+{
+ int ret=0;
+ char *p_buf=NULL;
+ char *p_content=NULL;
+
+ // Params check
+ if(p_h==NULL) return e_XmountMorphError_InvalidHandle;
+ if(pp_content==NULL) return e_XmountMorphError_InvalidBuffer;
+
+ ret=p_h->p_functions->GetInfofileContent(p_h->p_handle,(const char**)&p_buf);
+ if(ret!=0) {
+ LOG_ERROR("Unable to get info file content from morphing lib: %s!\n",
+ p_h->p_functions->GetErrorMessage(ret));
+ return e_XmountMorphError_FailedGettingInfoFileContent;
+ }
+ // Add infos to main buffer and free p_buf
+ if(p_buf!=NULL) {
+ XMOUNT_STRAPP(p_content,p_buf);
+ p_h->p_functions->FreeBuffer(p_buf);
+ } else {
+ XMOUNT_STRAPP(p_content,"None\n");
+ }
+
+ *pp_content=p_content;
+ return e_XmountMorphError_None;
+}
+
+/*******************************************************************************
+ * Private functions implementations
+ ******************************************************************************/
+
//! Read data from morphed image
/*!
* \param p_buf Pointer to buffer to write read data to (must be preallocated!)
* \param offset Offset at which data should be read
* \param size Size of data which should be read (size of buffer)
* \param p_read Number of read bytes on success
* \return TRUE on success, negated error code on error
*/
+/*
int ReadMorphedImageData(char *p_buf,
off_t offset,
size_t size,
size_t *p_read)
{
uint64_t block_off=0;
uint64_t cur_block=0;
uint64_t cur_to_read=0;
uint64_t image_size=0;
size_t read=0;
size_t to_read=0;
int ret;
uint8_t is_block_cached=FALSE;
te_XmountCache_Error cache_ret=e_XmountCache_Error_None;
// Make sure we aren't reading past EOF of image file
if(GetMorphedImageSize(&image_size)!=TRUE) {
LOG_ERROR("Couldn't get size of morphed image!\n");
return -EIO;
}
if(offset>=image_size) {
// Offset is beyond image size
LOG_DEBUG("Offset %zu is at / beyond size of morphed image.\n",offset);
*p_read=0;
return FALSE;
}
if(offset+size>image_size) {
// Attempt to read data past EOF of morphed image file
to_read=image_size-offset;
LOG_DEBUG("Attempt to read data past EOF of morphed image. Corrected size "
"from %zu to %" PRIu64 ".\n",
size,
to_read);
} else to_read=size;
// Calculate block to start reading data from
cur_block=offset/XMOUNT_CACHE_BLOCK_SIZE;
block_off=offset%XMOUNT_CACHE_BLOCK_SIZE;
// Read image data
while(to_read!=0) {
// Calculate how many bytes we have to read from this block
if(block_off+to_read>XMOUNT_CACHE_BLOCK_SIZE) {
cur_to_read=XMOUNT_CACHE_BLOCK_SIZE-block_off;
} else cur_to_read=to_read;
// Determine if we have to read cached data
is_block_cached=FALSE;
if(glob_xmount.output.writable==TRUE) {
cache_ret=XmountCache_IsBlockCached(glob_xmount.h_cache,cur_block);
if(cache_ret==e_XmountCache_Error_None) is_block_cached=TRUE;
else if(cache_ret!=e_XmountCache_Error_UncachedBlock) {
LOG_ERROR("Unable to determine if block %" PRIu64 " is cached: "
"Error code %u!\n",
cur_block,
cache_ret);
return -EIO;
}
}
// Check if block is cached
if(is_block_cached==TRUE) {
// Write support enabled and need to read altered data from cachefile
LOG_DEBUG("Reading %zu bytes from block cache file\n",cur_to_read);
cache_ret=XmountCache_BlockCacheRead(glob_xmount.h_cache,
p_buf,
cur_block,
block_off,
cur_to_read);
if(cache_ret!=e_XmountCache_Error_None) {
LOG_ERROR("Unable to read %" PRIu64
" bytes of cached data from cache block %" PRIu64
" at cache block offset %" PRIu64 ": Error code %u!\n",
cur_to_read,
cur_block,
block_off,
cache_ret);
return -EIO;
}
} else {
// No write support or data not cached
ret=glob_xmount.morphing.p_functions->Read(glob_xmount.morphing.p_handle,
p_buf,
(cur_block*XMOUNT_CACHE_BLOCK_SIZE)+
block_off,
cur_to_read,
&read);
if(ret!=0 || read!=cur_to_read) {
LOG_ERROR("Couldn't read %zu bytes at offset %zu from morphed image: "
"%s!\n",
cur_to_read,
offset,
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
return -EIO;
}
LOG_DEBUG("Read %" PRIu64 " bytes at offset %" PRIu64
" from morphed image file\n",
cur_to_read,
(cur_block*XMOUNT_CACHE_BLOCK_SIZE)+block_off);
}
cur_block++;
block_off=0;
p_buf+=cur_to_read;
to_read-=cur_to_read;
}
*p_read=to_read;
return TRUE;
}
+*/
//! Write data to morphed image
/*!
* \param p_buf Buffer with data to write
* \param offset Offset to start writing at
* \param count Amount of bytes to write
* \param p_written Amount of successfully written bytes
* \return TRUE on success, negated error code on error
*/
+/*
int WriteMorphedImageData(const char *p_buf,
off_t offset,
size_t count,
size_t *p_written)
{
uint64_t block_off=0;
uint64_t cur_block=0;
uint64_t cur_to_read=0;
uint64_t cur_to_write=0;
uint64_t image_size=0;
uint64_t read=0;
size_t written=0;
size_t to_write=0;
int ret;
char *p_buf2=NULL;
uint8_t is_block_cached=FALSE;
te_XmountCache_Error cache_ret=e_XmountCache_Error_None;
// Make sure we aren't writing past EOF of image file
if(GetMorphedImageSize(&image_size)!=TRUE) {
LOG_ERROR("Couldn't get size of morphed image!\n");
return -EIO;
}
if(offset>=image_size) {
// Offset is beyond image size
LOG_DEBUG("Offset %zu is at / beyond size of morphed image.\n",offset);
*p_written=0;
return 0;
}
if(offset+count>image_size) {
// Attempt to write data past EOF of morphed image file
to_write=image_size-offset;
LOG_DEBUG("Attempt to write data past EOF of morphed image. Corrected size "
"from %zu to %" PRIu64 ".\n",
count,
to_write);
} else to_write=count;
// Calculate block to start writing data to
cur_block=offset/XMOUNT_CACHE_BLOCK_SIZE;
block_off=offset%XMOUNT_CACHE_BLOCK_SIZE;
while(to_write!=0) {
// Calculate how many bytes we have to write to this block
if(block_off+to_write>XMOUNT_CACHE_BLOCK_SIZE) {
cur_to_write=XMOUNT_CACHE_BLOCK_SIZE-block_off;
} else cur_to_write=to_write;
// Determine if block is already in cache
is_block_cached=FALSE;
cache_ret=XmountCache_IsBlockCached(glob_xmount.h_cache,cur_block);
if(cache_ret==e_XmountCache_Error_None) is_block_cached=TRUE;
else if(cache_ret!=e_XmountCache_Error_UncachedBlock) {
LOG_ERROR("Unable to determine if block %" PRIu64 " is cached: "
"Error code %u!\n",
cur_block,
cache_ret);
return -EIO;
}
// Check if block is cached
if(is_block_cached==TRUE) {
// Block is cached
cache_ret=XmountCache_BlockCacheWrite(glob_xmount.h_cache,
p_buf,
cur_block,
block_off,
cur_to_write);
if(cache_ret!=e_XmountCache_Error_None) {
LOG_ERROR("Unable to write %" PRIu64
" bytes of data to cache block %" PRIu64
" at cache block offset %" PRIu64 ": Error code %u!\n",
cur_to_write,
cur_block,
block_off,
cache_ret);
return -EIO;
}
LOG_DEBUG("Wrote %" PRIu64 " bytes to block cache\n",cur_to_write);
} else {
// Uncached block. Need to cache entire new block
// Prepare new write buffer
XMOUNT_MALLOC(p_buf2,char*,XMOUNT_CACHE_BLOCK_SIZE);
memset(p_buf2,0x00,XMOUNT_CACHE_BLOCK_SIZE);
// Read full block from morphed image
cur_to_read=XMOUNT_CACHE_BLOCK_SIZE;
if((cur_block*XMOUNT_CACHE_BLOCK_SIZE)+XMOUNT_CACHE_BLOCK_SIZE>image_size) {
cur_to_read=XMOUNT_CACHE_BLOCK_SIZE-(((cur_block*XMOUNT_CACHE_BLOCK_SIZE)+
XMOUNT_CACHE_BLOCK_SIZE)-image_size);
}
ret=glob_xmount.morphing.p_functions->Read(glob_xmount.morphing.p_handle,
p_buf2,
cur_block*XMOUNT_CACHE_BLOCK_SIZE,
cur_to_read,
&read);
if(ret!=0 || read!=cur_to_read) {
LOG_ERROR("Couldn't read %" PRIu64 " bytes at offset %zu "
"from morphed image: %s!\n",
cur_to_read,
offset,
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
XMOUNT_FREE(p_buf2);
return -EIO;
}
// Set changed data
memcpy(p_buf2+block_off,p_buf,cur_to_write);
cache_ret=XmountCache_BlockCacheAppend(glob_xmount.h_cache,
p_buf,
cur_block);
if(cache_ret!=e_XmountCache_Error_None) {
LOG_ERROR("Unable to append new block cache block %" PRIu64
": Error code %u!\n",
cur_block,
cache_ret);
XMOUNT_FREE(p_buf2);
return -EIO;
}
XMOUNT_FREE(p_buf2);
LOG_DEBUG("Appended new block cache block %" PRIu64 "\n",cur_block);
}
block_off=0;
cur_block++;
p_buf+=cur_to_write;
to_write-=cur_to_write;
}
*p_written=to_write;
return TRUE;
}
+*/
diff --git a/src/xmount_morphing.h b/src/xmount_morphing.h
index d0c0e10..c01e8d4 100644
--- a/src/xmount_morphing.h
+++ b/src/xmount_morphing.h
@@ -1,59 +1,286 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#ifndef XMOUNT_MORPHING_H
#define XMOUNT_MORPHING_H
-#include "../libxmount_morphing/libxmount_morphing.h"
-
-//! Structure containing infos about morphing libs
-typedef struct s_MorphingLib {
- //! Filename of lib (without path)
- char *p_name;
- //! Handle to the loaded lib
- void *p_lib;
- //! Array of supported morphing types
- char *p_supported_morphing_types;
- //! Struct containing lib functions
- ts_LibXmountMorphingFunctions lib_functions;
-} ts_MorphingLib, *pts_MorphingLib;
-
-//! Structures and vars needed for morph support
-typedef struct s_MorphingData {
- //! Loaded morphing lib count
- uint32_t libs_count;
- //! Array containing infos about loaded morphing libs
- pts_MorphingLib *pp_libs;
- //! Specified morphing type (--morph)
- char *p_morph_type;
- //! Amount of specified morphing lib params (--morphopts)
- uint32_t lib_params_count;
- //! Specified morphing lib params (--morphopts)
- pts_LibXmountOptions *pp_lib_params;
- //! Handle to initialized morphing lib
- void *p_handle;
- //! Morphing functions of initialized lib
- pts_LibXmountMorphingFunctions p_functions;
- //! Input image functions passed to morphing lib
- ts_LibXmountMorphingInputFunctions input_image_functions;
-} ts_MorphingData;
-
-int GetMorphedImageSize(uint64_t*);
-int ReadMorphedImageData(char*, off_t, size_t, size_t*);
-int WriteMorphedImageData(const char*, off_t, size_t, size_t*);
+/*******************************************************************************
+ * Public definitions / macros
+ ******************************************************************************/
+//! Naming scheme of input libraries
+#define XMOUNT_MORPHING_LIBRARY_NAMING_SCHEME "libxmount_morph_"
+
+/*******************************************************************************
+ * Public types / structures / enums
+ ******************************************************************************/
+typedef struct s_XmountMorphHandle *pts_XmountMorphHandle;
+
+typedef enum e_XmountMorphError {
+ //! No error
+ e_XmountMorphError_None=0,
+ //! Error to allocate memory
+ e_XmountMorphError_Alloc,
+ //! Invalid input handle
+ e_XmountMorphError_InvalidHandle,
+ //! Invalid pointer to an input handle
+ e_XmountMorphError_InvalidHandlePointer,
+ //! A given buffer is invalid
+ e_XmountMorphError_InvalidBuffer,
+ //! A given string is invalid
+ e_XmountMorphError_InvalidString,
+ //! A given array is invalid
+ //e_XmountMorphError_InvalidArray,
+ //! Library options have already been set
+ e_XmountMorphError_LibOptionsAlreadySet,
+ //! Library options couldn't be parsed
+ e_XmountMorphError_FailedParsingOptions,
+ //! Unable to get info file content from library
+ e_XmountMorphError_FailedGettingInfoFileContent,
+ //! Unable to load library file
+ e_XmountMorphError_FailedLoadingLibrary,
+ //! Unable to load a library symbol
+ e_XmountMorphError_FailedLoadingSymbol,
+ //! Library has wrong API version
+ e_XmountMorphError_WrongLibraryApiVersion,
+ //! Library is missing a function
+ e_XmountMorphError_MissingLibraryFunction,
+/*
+ //! Unsupported input image format
+ e_XmountInput_Error_UnsupportedFormat,
+ //! Specified image number is incorrect
+ e_XmountInput_Error_NoSuchImage,
+ //! Unable to create input image handle
+ e_XmountInput_Error_FailedCreatingImageHandle,
+ //! Unable to parse input library options
+ e_XmountInput_Error_FailedParsingLibParams,
+ //! Unable to open input image
+ e_XmountInput_Error_FailedOpeningImage,
+*/
+ //! Unable to get image size
+ e_XmountMorphError_FailedGettingImageSize,
+/*
+ //! A specified offset is larger than a specified image
+ e_XmountInput_Error_OffsetExceedsImageSize,
+ //! A specified size limit is larger than a specified image
+ e_XmountInput_Error_SizelimitExceedsImageSize,
+ //! Unable to read data from input image
+ e_XmountInput_Error_FailedReadingData
+*/
+} te_XmountMorphError;
+
+/*******************************************************************************
+ * Public functions declarations
+ ******************************************************************************/
+/*!
+ * \brief Create new input handle
+ *
+ * Creates a new input handle.
+ *
+ * \param pp_h Pointer to input handle
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_CreateHandle(pts_XmountMorphHandle *pp_h);
+
+/*!
+ * \brief Destroy input handle
+ *
+ * Invalidates the given handle and frees all used resources.
+ *
+ * \param pp_h Pointer to input handle
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_DestroyHandle(pts_XmountMorphHandle *pp_h);
+
+/*!
+ * \brief Enable internal debugging
+ *
+ * Enables the generation of intrernal debugging messages.
+ *
+ * \param p_h Input handle
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_EnableDebugging(pts_XmountMorphHandle p_h);
+
+/*!
+ * \brief Load an input library
+ *
+ * Loads a given input library.
+ *
+ * \param p_h Input handle
+ * \param p_lib Library name (without path)
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_AddLibrary(pts_XmountMorphHandle p_h,
+ const char *p_lib_name);
+
+/*!
+ * \brief Get loaded input library count
+ *
+ * Returns the number of successfully loaded input libraries.
+ *
+ * \param p_h Input handle
+ * \param p_count Library count is returned in this variable
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_GetLibraryCount(pts_XmountMorphHandle p_h,
+ uint32_t *p_count);
+
+/*!
+ * \brief Return all supported morphing types
+ *
+ * Returns a null-terminated vector of all supported morphing types.
+ *
+ * The returned vector must be freed by the caller.
+ *
+ * \param p_h Morphing handle
+ * \param pp_types Supported types vector is returned in this var
+ * \return e_XmountMorphError_None on success
+ */
+te_XmountMorphError XmountMorphing_GetSupportedTypes(pts_XmountMorphHandle p_h,
+ char **pp_types);
+
+/*!
+ * \brief Set library options
+ *
+ * Parses the given library option string (as given after --inopts).
+ *
+ * \param p_h Input handle
+ * \param p_options Library option string
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_SetOptions(pts_XmountMorphHandle p_h,
+ char *p_options);
+
+/*!
+ * \brief Return all library specific option help texts
+ *
+ * Returns a string containing help messages for all loaded input lib options.
+ * The string is pre-formated to be used in xmount's help output.
+ *
+ * The caller must free the returned string.
+ *
+ * \param p_h Input handle
+ * \param pp_help_text Help text is returned in this parameter
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_GetOptionsHelpText(pts_XmountMorphHandle p_h,
+ char **pp_help_text);
+
+/*!
+ * \brief Returns a string containing infos about loaded libs
+ *
+ * Returns a string containing infos about loaded input libraries. The string is
+ * pre-formated to be used in xmount's info output.
+ *
+ * The caller must free the returned string.
+ *
+ * \param p_h Input handle
+ * \param pp_info_text Info text is returned in this parameter
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_GetLibsInfoText(pts_XmountMorphHandle p_h,
+ char **pp_info_text);
+
+/*!
+ * \brief Set morphing type
+ *
+ * Set the morphing type that should be applied to the input image.
+ *
+ * \param p_h Input handle
+ * \param p_type Morphing type string as specified with xmount's --morph option.
+ * \return e_XmountMorphError_None on success
+ */
+te_XmountMorphError XmountMorphing_SaetType(pts_XmountMorphHandle p_h,
+ char *p_type);
+
+/*!
+ * \brief Opens all added input images
+ *
+ * Opens all added input images.
+ *
+ * \param p_h Input handle
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_StartMorphing(pts_XmountMorphHandle p_h);
+
+/*!
+ * \brief Closes all previously opened input images
+ *
+ * Closes all previously opened input images.
+ *
+ * \param p_h Input handle
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountInput_StopMorphing(pts_XmountMorphHandle p_h);
+
+/*!
+ * \brief Get the size of an input image
+ *
+ * Returns the size (in bytes) of the specified input image.
+ *
+ * \param p_h Input handle
+ * \param image_nr Image number for which to return the size
+ * \param p_size On success, size is returned in this variable
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_GetSize(pts_XmountMorphHandle p_h,
+ uint64_t *p_size);
+
+/*!
+ * \brief Read data from an input image
+ *
+ * Reads count bytes from input image image_nr starting at given offset and
+ * copies the data into p_buf.
+ *
+ * The given buffer must be pre-allocated to hold as many bytes as should be
+ * read!
+ *
+ * \param p_h Input handle
+ * \param image_nr Image number for which to return the size
+ * \param p_buf Buffer into which to copy read data
+ * \param offset Offset at which to start reading
+ * \param count Amount of bytes to read
+ * \param p_read On success, amount of bytes read is returned in this variable
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_ReadData(pts_XmountMorphHandle p_h,
+ char *p_buf,
+ uint64_t offset,
+ uint64_t count,
+ uint64_t *p_read);
+
+te_XmountMorphError XmountMorphing_WriteData(pts_XmountMorphHandle p_h,
+ const char *p_buf,
+ uint64_t offset,
+ uint64_t count);
+
+/*!
+ * \brief Get info text to be added to xmount's info file
+ *
+ * Generates a string containing informations about currently opened input
+ * images.
+ *
+ * The caller must free the returned string.
+ *
+ * \param p_h Input handle
+ * \param pp_content Buffer in which text is returned
+ * \return e_XmountInput_Error_None on success
+ */
+te_XmountMorphError XmountMorphing_GetInfoFileContent(pts_XmountMorphHandle p_h,
+ char **pp_content);
#endif // XMOUNT_MORPHING_H

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