void extract_cpio_gz(int fd) {
archive_handle_t *archive_handle;
unsigned char magic[2];
/* Initialise */
archive_handle = init_handle();
archive_handle->seek = seek_by_char;
//archive_handle->action_header = header_list;
archive_handle->action_data = data_extract_all;
archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
archive_handle->src_fd = fd;
archive_handle->offset = 0;
bb_xread_all(archive_handle->src_fd, &magic, 2);
if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
bb_error_msg_and_die("Invalid gzip magic");
}
check_header_gzip(archive_handle->src_fd);
bb_xchdir("/"); // Install RPM's to root
archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
archive_handle->offset = 0;
while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
}
/* No getopt required */
int rpm2cpio_main(int argc, char **argv)
{
struct rpm_lead lead;
int rpm_fd;
unsigned char magic[2];
if (argc == 1) {
rpm_fd = STDIN_FILENO;
} else {
rpm_fd = bb_xopen(argv[1], O_RDONLY);
}
bb_xread_all(rpm_fd, &lead, sizeof(struct rpm_lead));
if (strncmp((char *) &lead.magic, RPM_MAGIC, 4) != 0) {
bb_error_msg_and_die("Invalid RPM magic"); /* Just check the magic, the rest is irrelevant */
}
/* Skip the signature header */
skip_header(rpm_fd);
lseek(rpm_fd, (8 - (lseek(rpm_fd, 0, SEEK_CUR) % 8)) % 8, SEEK_CUR);
/* Skip the main header */
skip_header(rpm_fd);
bb_xread_all(rpm_fd, &magic, 2);
if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
bb_error_msg_and_die("Invalid gzip magic");
}
check_header_gzip(rpm_fd);
if (inflate_gunzip(rpm_fd, STDOUT_FILENO) != 0) {
bb_error_msg("Error inflating");
}
close(rpm_fd);
return 0;
}
int gunzip_main(int argc, char **argv)
{
char status = EXIT_SUCCESS;
unsigned long opt;
opt = bb_getopt_ulflags(argc, argv, "cftd");
/* if called as zcat */
if (strcmp(bb_applet_name, "zcat") == 0) {
opt |= GUNZIP_OPT_STDOUT;
}
do {
struct stat stat_buf;
const char *old_path = argv[optind];
const char *delete_path = NULL;
char *new_path = NULL;
int src_fd;
int dst_fd;
optind++;
if (old_path == NULL || strcmp(old_path, "-") == 0) {
src_fd = STDIN_FILENO;
opt |= GUNZIP_OPT_STDOUT;
} else {
src_fd = bb_xopen(old_path, O_RDONLY);
/* Get the time stamp on the input file. */
xstat(old_path, &stat_buf);
}
/* Check that the input is sane. */
if (isatty(src_fd) && ((opt & GUNZIP_OPT_FORCE) == 0)) {
bb_error_msg_and_die
("compressed data not read from terminal. Use -f to force it.");
}
/* Set output filename and number */
if (opt & GUNZIP_OPT_TEST) {
dst_fd = bb_xopen(bb_dev_null, O_WRONLY); /* why does test use filenum 2 ? */
} else if (opt & GUNZIP_OPT_STDOUT) {
dst_fd = STDOUT_FILENO;
} else {
char *extension;
new_path = bb_xstrdup(old_path);
extension = strrchr(new_path, '.');
#ifdef CONFIG_FEATURE_GUNZIP_UNCOMPRESS
if (extension && (strcmp(extension, ".Z") == 0)) {
*extension = '\0';
} else
#endif
if (extension && (strcmp(extension, ".gz") == 0)) {
*extension = '\0';
} else if (extension && (strcmp(extension, ".tgz") == 0)) {
extension[2] = 'a';
extension[3] = 'r';
} else {
bb_error_msg_and_die("Invalid extension");
}
/* Open output file (with correct permissions) */
dst_fd = bb_xopen3(new_path, O_WRONLY | O_CREAT, stat_buf.st_mode);
/* If unzip succeeds remove the old file */
delete_path = old_path;
}
/* do the decompression, and cleanup */
if (bb_xread_char(src_fd) == 0x1f) {
unsigned char magic2;
magic2 = bb_xread_char(src_fd);
#ifdef CONFIG_FEATURE_GUNZIP_UNCOMPRESS
if (magic2 == 0x9d) {
status = uncompress(src_fd, dst_fd);
} else
#endif
if (magic2 == 0x8b) {
check_header_gzip(src_fd);
status = inflate_gunzip(src_fd, dst_fd);
if (status != 0) {
bb_error_msg_and_die("Error inflating");
}
} else {
bb_error_msg_and_die("Invalid magic");
}
} else {
bb_error_msg_and_die("Invalid magic");
}
if ((status != EXIT_SUCCESS) && (new_path)) {
/* Unzip failed, remove new path instead of old path */
delete_path = new_path;
}
if (dst_fd != STDOUT_FILENO) {
close(dst_fd);
}
if (src_fd != STDIN_FILENO) {
close(src_fd);
}
/* delete_path will be NULL if in test mode or from stdin */
if (delete_path && (unlink(delete_path) == -1)) {
bb_error_msg_and_die("Couldn't remove %s", delete_path);
}
free(new_path);
} while (optind < argc);
return status;
}
