rpm2cpio.c
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/* rpmarchive: spit out the main archive portion of a package */
#include "system.h"
const char *__progname;
#include <rpmio.h>
#include <rpmiotypes.h> /* XXX fnpyKey */
#include <rpmurl.h>
#include <rpmtypes.h>
#include <rpmtag.h>
#include <pkgio.h>
#include <rpmts.h>
#include "debug.h"
int main(int argc, char **argv)
{
FD_t fdi, fdo;
Header h;
char * rpmio_flags;
rpmRC rc;
FD_t gzdi;
setprogname(argv[0]); /* Retrofit glibc __progname */
if (argc == 1 || (argc == 2 && !strcmp(argv[1], "-")))
fdi = fdDup(STDIN_FILENO);
else {
int ut = urlPath(argv[1], NULL);
if (ut == URL_IS_HTTP || ut == URL_IS_HTTPS) {
fprintf(stderr, "%s: %s: HTTP/HTTPS transport is non-functional.\n",
argv[0], argv[1]);
exit(EXIT_FAILURE);
}
fdi = Fopen(argv[1], "r");
}
if (Ferror(fdi)) {
fprintf(stderr, "%s: %s: %s\n", argv[0],
(argc == 1 ? "<stdin>" : argv[1]), Fstrerror(fdi));
exit(EXIT_FAILURE);
}
fdo = fdDup(STDOUT_FILENO);
{ rpmts ts = rpmtsCreate();
rpmVSFlags vsflags = 0;
/* XXX retain the ageless behavior of rpm2cpio */
vsflags |= _RPMVSF_NODIGESTS;
vsflags |= _RPMVSF_NOSIGNATURES;
vsflags |= RPMVSF_NOHDRCHK;
(void) rpmtsSetVSFlags(ts, vsflags);
/*@-mustmod@*/ /* LCL: segfault */
rc = rpmReadPackageFile(ts, fdi, "rpm2cpio", &h);
/*@=mustmod@*/
(void)rpmtsFree(ts);
ts = NULL;
}
switch (rc) {
case RPMRC_OK:
case RPMRC_NOKEY:
case RPMRC_NOTTRUSTED:
break;
case RPMRC_NOTFOUND:
fprintf(stderr, _("argument is not an RPM package\n"));
exit(EXIT_FAILURE);
break;
case RPMRC_FAIL:
default:
fprintf(stderr, _("error reading header from package\n"));
exit(EXIT_FAILURE);
break;
}
/* Retrieve type of payload compression. */
{ HE_t he = memset(alloca(sizeof(*he)), 0, sizeof(*he));
const char * payload_compressor = NULL;
char * t;
int xx;
he->tag = RPMTAG_PAYLOADCOMPRESSOR;
xx = headerGet(h, he, 0);
payload_compressor = (xx ? he->p.str : "gzip");
rpmio_flags = t = alloca(sizeof("r.gzdio"));
*t++ = 'r';
if (!strcmp(payload_compressor, "gzip"))
t = stpcpy(t, ".gzdio");
if (!strcmp(payload_compressor, "bzip2"))
t = stpcpy(t, ".bzdio");
if (!strcmp(payload_compressor, "lzma"))
t = stpcpy(t, ".lzdio");
if (!strcmp(payload_compressor, "xz"))
t = stpcpy(t, ".xzdio");
he->p.ptr = _free(he->p.ptr);
}
gzdi = Fdopen(fdi, rpmio_flags); /* XXX gzdi == fdi */
if (gzdi == NULL) {
fprintf(stderr, _("cannot re-open payload: %s\n"), Fstrerror(gzdi));
exit(EXIT_FAILURE);
}
rc = ufdCopy(gzdi, fdo);
rc = (rc <= 0) ? EXIT_FAILURE : EXIT_SUCCESS;
Fclose(fdo);
Fclose(gzdi); /* XXX gzdi == fdi */
return rc;
}