diff options
author | Glenn L McGrath <bug1@ihug.co.nz> | 2002-09-25 06:47:48 +0400 |
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committer | Glenn L McGrath <bug1@ihug.co.nz> | 2002-09-25 06:47:48 +0400 |
commit | 7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23 (patch) | |
tree | f38c7ef4317eea28c6abdb0adbbb286fe041711e /archival/rpm2cpio.c | |
parent | ecfa290cfd4953598e6d91989bd66ac16e135f84 (diff) |
New common unarchive code.
Diffstat (limited to 'archival/rpm2cpio.c')
-rw-r--r-- | archival/rpm2cpio.c | 57 |
1 files changed, 34 insertions, 23 deletions
diff --git a/archival/rpm2cpio.c b/archival/rpm2cpio.c index 22051dabf..e1e93988f 100644 --- a/archival/rpm2cpio.c +++ b/archival/rpm2cpio.c @@ -18,10 +18,13 @@ * 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" @@ -45,46 +48,54 @@ struct rpm_header { u_int32_t size; /* Size of store (4 bytes) */ }; -void skip_header(FILE *rpmfile) +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 */ + xread_all(rpm_fd, &header, sizeof(struct rpm_header)); + 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 */ + } 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; if (argc == 1) { - rpmfile = stdin; + rpm_fd = fileno(stdin); } else { - rpmfile = xfopen(argv[1], "r"); - /* set the buffer size */ - setvbuf(rpmfile, NULL, _IOFBF, 0x8000); + rpm_fd = xopen(argv[1], O_RDONLY); + } + + xread_all(rpm_fd, &lead, sizeof(struct rpm_lead)); + if (strncmp((char *) &lead.magic, RPM_MAGIC, 4) != 0) { + 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); + data_align(rpm_fd, lseek(rpm_fd, 0, SEEK_CUR), 8); + /* Skip the main header */ - skip_header(rpmfile); + skip_header(rpm_fd); + + check_header_gzip(rpm_fd); + if (inflate(rpm_fd, fileno(stdout)) != 0) { + error_msg("Error inflating"); + } + check_trailer_gzip(rpm_fd); - cpiofile = gz_open(rpmfile, &gunzip_pid); + close(rpm_fd); - copyfd(fileno(cpiofile), fileno(stdout)); - gz_close(gunzip_pid); - fclose(rpmfile); return 0; } |