69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
/* rpmarchive: spit out the main archive portion of a package */
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <zlib.h>
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#include "rpmlib.h"
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char *zlib_err [] = {
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"No",
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"Unix",
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"Data",
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"Memory",
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"Buffer",
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"Version"
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};
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int main(int argc, char **argv)
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{
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int fd;
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Header hd;
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int rc, isSource;
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char buffer[1024];
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int ct;
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gzFile stream;
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if (argc == 1) {
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fd = 0;
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} else {
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fd = open(argv[1], O_RDONLY, 0644);
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}
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if (fd < 0) {
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perror("cannot open package");
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exit(1);
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}
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rc = rpmReadPackageHeader(fd, &hd, &isSource, NULL, NULL);
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if (rc == 1) {
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fprintf(stderr, "argument is not an RPM package\n");
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exit(1);
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} else if (rc) {
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fprintf(stderr, "error reading header from package\n");
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exit(1);
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}
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stream = gzdopen(fd, "r");
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while ((ct = gzread(stream, &buffer, 1024)) > 0) {
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write(1, &buffer, ct);
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}
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if (ct < 0){
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int zerror;
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gzerror (stream, &zerror);
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if (zerror == Z_ERRNO){
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perror ("While uncompressing");
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gzclose(stream);
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return 1;
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}
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fprintf (stderr, "rpm2cpio: zlib: %s error\n", zlib_err [-zerror - 1]);
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}
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gzclose(stream);
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return 0;
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}
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