#include "system.h"
const char *__progname;
-#include <rpm/rpmlib.h>
+#include <rpm/rpmlib.h> /* rpmReadPackageFile .. */
+#include <rpm/rpmtag.h>
+#include <rpm/rpmio.h>
#include <rpm/rpmpgp.h>
#include <rpm/rpmts.h>
{
FD_t fdi, fdo;
Header h;
- char * rpmio_flags;
- rpmRC rc;
+ char * rpmio_flags = NULL;
+ int rc;
+ off_t payload_size;
FD_t gzdi;
setprogname(argv[0]); /* Retrofit glibc __progname */
+ rpmReadConfigFiles(NULL, NULL);
if (argc == 1)
fdi = fdDup(STDIN_FILENO);
- else
+ else {
+ if (rstreq(argv[1], "-h") || rstreq(argv[1], "--help")) {
+ fprintf(stderr, "Usage: rpm2cpio file.rpm\n");
+ exit(EXIT_FAILURE);
+ }
fdi = Fopen(argv[1], "r.ufdio");
+ }
if (Ferror(fdi)) {
fprintf(stderr, "%s: %s: %s\n", argv[0],
vsflags |= RPMVSF_NOHDRCHK;
(void) rpmtsSetVSFlags(ts, vsflags);
- /* LCL: segfault */
rc = rpmReadPackageFile(ts, fdi, "rpm2cpio", &h);
ts = rpmtsFree(ts);
break;
}
- /* Retrieve type of payload compression. */
- { const char * payload_compressor = NULL;
- char * t;
-
- if (!headerGetEntry(h, RPMTAG_PAYLOADCOMPRESSOR, NULL,
- (rpm_data_t *) &payload_compressor, NULL))
- payload_compressor = "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");
+ /* Retrieve payload size and compression type. */
+ { const char *compr = headerGetString(h, RPMTAG_PAYLOADCOMPRESSOR);
+ rpmio_flags = rstrscat(NULL, "r.", compr ? compr : "gzip", NULL);
+ payload_size = headerGetNumber(h, RPMTAG_LONGARCHIVESIZE);
}
gzdi = Fdopen(fdi, rpmio_flags); /* XXX gzdi == fdi */
+ free(rpmio_flags);
+
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;
+ rc = (ufdCopy(gzdi, fdo) == payload_size) ? EXIT_SUCCESS : EXIT_FAILURE;
+
Fclose(fdo);
Fclose(gzdi); /* XXX gzdi == fdi */