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