* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-
-#include "busybox.h"
+#include <sys/types.h>
#include <netinet/in.h> /* For ntohl & htonl function */
+#include <fcntl.h>
+#include <unistd.h>
#include <string.h>
+#include "busybox.h"
+#include "unarchive.h"
#define RPM_MAGIC "\355\253\356\333"
#define RPM_HEADER_MAGIC "\216\255\350"
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
struct rpm_lead {
unsigned char magic[4];
- u8 major, minor;
- u16 type;
- u16 archnum;
+ uint8_t major, minor;
+ uint16_t type;
+ uint16_t archnum;
char name[66];
- u16 osnum;
- u16 signature_type;
+ uint16_t osnum;
+ uint16_t signature_type;
char reserved[16];
};
struct rpm_header {
char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
- u8 version; /* 1 byte version number */
- u32 reserved; /* 4 bytes reserved */
- u32 entries; /* Number of entries in header (4 bytes) */
- u32 size; /* Size of store (4 bytes) */
+ uint8_t version; /* 1 byte version number */
+ uint32_t reserved; /* 4 bytes reserved */
+ uint32_t entries; /* Number of entries in header (4 bytes) */
+ uint32_t size; /* Size of store (4 bytes) */
};
-void skip_header(FILE *rpmfile)
+static void skip_header(int rpm_fd)
{
struct rpm_header header;
- fread(&header, sizeof(struct rpm_header), 1, rpmfile);
- if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) error_msg_and_die("Invalid RPM header magic"); /* Invalid magic */
- if (header.version != 1) error_msg_and_die("Unsupported RPM header version"); /* This program only supports v1 headers */
+ bb_xread_all(rpm_fd, &header, sizeof(struct rpm_header));
+ if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) {
+ bb_error_msg_and_die("Invalid RPM header magic"); /* Invalid magic */
+ }
+ if (header.version != 1) {
+ bb_error_msg_and_die("Unsupported RPM header version"); /* This program only supports v1 headers */
+ }
header.entries = ntohl(header.entries);
header.size = ntohl(header.size);
- fseek (rpmfile, 16 * header.entries, SEEK_CUR); /* Seek past index entries */
- fseek (rpmfile, header.size, SEEK_CUR); /* Seek past store */
+ lseek (rpm_fd, 16 * header.entries, SEEK_CUR); /* Seek past index entries */
+ lseek (rpm_fd, header.size, SEEK_CUR); /* Seek past store */
}
/* No getopt required */
extern int rpm2cpio_main(int argc, char **argv)
{
struct rpm_lead lead;
- int gunzip_pid;
- FILE *rpmfile, *cpiofile;
+ int rpm_fd;
+ unsigned char magic[2];
if (argc == 1) {
- rpmfile = stdin;
+ rpm_fd = STDIN_FILENO;
} else {
- rpmfile = fopen(argv[1], "r");
- if (!rpmfile) perror_msg_and_die("Can't open rpm file");
+ 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 */
}
- fread (&lead, sizeof(struct rpm_lead), 1, rpmfile);
- if (strncmp((char *) &lead.magic, RPM_MAGIC, 4) != 0) error_msg_and_die("Invalid RPM magic"); /* Just check the magic, the rest is irrelevant */
/* Skip the signature header */
- skip_header(rpmfile);
- fseek(rpmfile, (8 - (ftell(rpmfile) % 8)) % 8, SEEK_CUR); /* Pad to 8 byte boundary */
+ skip_header(rpm_fd);
+ lseek(rpm_fd, (8 - (lseek(rpm_fd, 0, SEEK_CUR) % 8)) % 8, SEEK_CUR);
+
/* Skip the main header */
- skip_header(rpmfile);
+ 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);
- cpiofile = gz_open(rpmfile, &gunzip_pid);
- copyfd(fileno(cpiofile), fileno(stdout));
- gz_close(gunzip_pid);
- fclose(rpmfile);
return 0;
}