rpm/rpm2cpio.c

/* rpmarchive: spit out the main archive portion of a package */

#include "system.h"

#include "rpmlib.h"

char *zlib_err [] = {
   "No",
   "Unix",
   "Data",
   "Memory",
   "Buffer",
   "Version"
};

int main(int argc, char **argv)
{
    FD_t fdi, fdo;
    Header hd;
    int rc, isSource;
    char buffer[1024];
    int ct;
    FD_t gzdi;
    
    if (argc == 1) {
	fdi = fdDup(STDIN_FILENO);
    } else {
	fdi = fdOpen(argv[1], O_RDONLY, 0644);
    }

    if (fdFileno(fdi) < 0) {
	perror("cannot open package");
	exit(EXIT_FAILURE);
    }
    fdo = fdDup(STDOUT_FILENO);

    rc = rpmReadPackageHeader(fdi, &hd, &isSource, NULL, NULL);
    switch (rc) {
    case 0:
	break;
    case 1:
	fprintf(stderr, _("argument is not an RPM package\n"));
	exit(EXIT_FAILURE);
	break;
    default:
	fprintf(stderr, _("error reading header from package\n"));
	exit(EXIT_FAILURE);
	break;
    }

    gzdi = gzdFdopen(fdi, "r");	/* XXX gzdi == fdi */

    while ((ct = gzdRead(gzdi, &buffer, sizeof(buffer))) > 0) {
	fdWrite(fdo, &buffer, ct);
    }

    if (ct < 0) {
        fprintf (stderr, "rpm2cpio: zlib: %s\n", gzdStrerror(gzdi));
	rc = EXIT_FAILURE;
    } else {
	rc = EXIT_SUCCESS;
    }

    gzdClose(gzdi);	/* XXX gzdi == fdi */

    return rc;
}