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added -e (extract) -o (output) flags now the output supports recursive output path creation

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Rifat Azad 2024-09-28 14:29:02 +06:00
parent f7badf4416
commit a65d6e5be1
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GPG key ID: 2F499A32EE430A1A
1 changed files with 72 additions and 58 deletions
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130
pacextractor.c
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@ -8,7 +8,7 @@
#include <stdint.h>
#include <sys/stat.h>
#define VERSION "1.0.0"
#define VERSION "1.1.0"
typedef struct {
int16_t someField[24];
@ -51,7 +51,7 @@ static void getString(const int16_t* baseString, char* resString) {
}
static void printUsage(void) {
printf("Usage: pacextractor <firmware name>.pac <output path>\n");
printf("Usage: pacextractor -e <firmware name>.pac -o <output path>\n");
printf("Options:\n");
printf(" -h Show this help message and exit\n");
printf(" -v Show version information and exit\n");
@ -76,12 +76,25 @@ static int openFirmwareFile(const char* filePath) {
}
static void createOutputDirectory(const char* path) {
if (access(path, F_OK) == -1) {
if (mkdir(path, 0777) == -1) {
char temp[768];
strcpy(temp, path);
for (char *p = temp; *p; p++) {
if (*p == '/') {
*p = 0; // Temporarily terminate the string
if (access(temp, F_OK) == -1) {
if (mkdir(temp, 0777) == -1) {
perror("Failed to create output directory");
exit(EXIT_FAILURE);
}
}
*p = '/'; // Restore the string
}
}
if (access(temp, F_OK) == -1) {
if (mkdir(temp, 0777) == -1) {
perror("Failed to create output directory");
exit(EXIT_FAILURE);
}
printf("Created output directory: %s\n", path);
}
}
@ -198,7 +211,7 @@ static void extractPartition(int fd, const PartitionHeader* partHeader, const ch
}
int main(int argc, char** argv) {
if (argc < 2) {
if (argc < 5) {
printUsageAndExit();
}
@ -208,60 +221,61 @@ int main(int argc, char** argv) {
} else if (strcmp(argv[1], "-v") == 0) {
printf("pacextractor version %s\n", VERSION);
exit(EXIT_SUCCESS);
}
} else if (strcmp(argv[1], "-e") == 0 && strcmp(argv[3], "-o") == 0) {
// Process the extraction
int fd = openFirmwareFile(argv[2]);
struct stat st;
if (fstat(fd, &st) == -1) {
perror("Error getting file stats");
exit(EXIT_FAILURE);
}
int firmwareSize = st.st_size;
if (firmwareSize < sizeof(PacHeader)) {
fprintf(stderr, "File %s is not a valid firmware\n", argv[2]);
close(fd);
exit(EXIT_FAILURE);
}
if (argc < 3) {
char* outputPath = argv[4];
createOutputDirectory(outputPath);
PacHeader pacHeader = readPacHeader(fd);
char firmwareName[256];
getString(pacHeader.firmwareName, firmwareName);
printf("Firmware name: %s\n", firmwareName);
uint32_t curPos = pacHeader.partitionsListStart;
PartitionHeader** partHeaders = malloc(pacHeader.partitionCount * sizeof(PartitionHeader*));
if (partHeaders == NULL) {
perror("Memory allocation failed for partition headers");
close(fd);
exit(EXIT_FAILURE);
}
for (int i = 0; i < pacHeader.partitionCount; i++) {
partHeaders[i] = readPartitionHeader(fd, &curPos);
char partitionName[256];
char fileName[512];
getString(partHeaders[i]->partitionName, partitionName);
getString(partHeaders[i]->fileName, fileName);
printf("Partition name: %s\n\twith file name: %s\n\twith size %u\n",
partitionName, fileName, partHeaders[i]->partitionSize);
}
for (int i = 0; i < pacHeader.partitionCount; i++) {
extractPartition(fd, partHeaders[i], outputPath);
free(partHeaders[i]);
}
free(partHeaders);
close(fd);
return EXIT_SUCCESS;
} else {
printUsageAndExit();
}
int fd = openFirmwareFile(argv[1]);
struct stat st;
if (fstat(fd, &st) == -1) {
perror("Error getting file stats");
exit(EXIT_FAILURE);
}
int firmwareSize = st.st_size;
if (firmwareSize < sizeof(PacHeader)) {
fprintf(stderr, "file %s is not a valid firmware\n", argv[1]);
close(fd);
exit(EXIT_FAILURE);
}
char* outputPath = argv[2];
createOutputDirectory(outputPath);
PacHeader pacHeader = readPacHeader(fd);
char firmwareName[256];
getString(pacHeader.firmwareName, firmwareName);
printf("Firmware name: %s\n", firmwareName);
uint32_t curPos = pacHeader.partitionsListStart;
PartitionHeader** partHeaders = malloc(pacHeader.partitionCount * sizeof(PartitionHeader*));
if (partHeaders == NULL) {
perror("Memory allocation failed for partition headers");
close(fd);
exit(EXIT_FAILURE);
}
for (int i = 0; i < pacHeader.partitionCount; i++) {
partHeaders[i] = readPartitionHeader(fd, &curPos);
char partitionName[256];
char fileName[512];
getString(partHeaders[i]->partitionName, partitionName);
getString(partHeaders[i]->fileName, fileName);
printf("Partition name: %s\n\twith file name: %s\n\twith size %u\n",
partitionName, fileName, partHeaders[i]->partitionSize);
}
for (int i = 0; i < pacHeader.partitionCount; i++) {
extractPartition(fd, partHeaders[i], outputPath);
free(partHeaders[i]);
}
free(partHeaders);
close(fd);
return EXIT_SUCCESS;
}
}