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# rpm2cpio.c

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    00001 /* rpmarchive: spit out the main archive portion of a package */
    00002
    00003 #include "system.h"
    00004 const char *__progname;
    00005
    00006 #include <rpm/rpmlib.h>         /* rpmReadPackageFile .. */
    00007 #include <rpm/rpmtag.h>
    00008 #include <rpm/rpmio.h>
    00009 #include <rpm/rpmpgp.h>
    00010
    00011 #include <rpm/rpmts.h>
    00012
    00013 #include "debug.h"
    00014
    00015 int main(int argc, char *argv[])
    00016 {
    00017     FD_t fdi, fdo;
    00018     Header h;
    00019     char * rpmio_flags = NULL;
    00020     int rc;
    00021     FD_t gzdi;
    00022
    00023     setprogname(argv[0]);       /* Retrofit glibc __progname */
    00024     rpmReadConfigFiles(NULL, NULL);
    00025     if (argc == 1)
    00026         fdi = fdDup(STDIN_FILENO);
    00027     else {
    00028         if (rstreq(argv[1], "-h") || rstreq(argv[1], "--help")) {
    00029             fprintf(stderr, "Usage: rpm2cpio file.rpm\n");
    00030             exit(EXIT_FAILURE);
    00031         }
    00032         fdi = Fopen(argv[1], "r.ufdio");
    00033     }
    00034
    00035     if (Ferror(fdi)) {
    00036         fprintf(stderr, "%s: %s: %s\n", argv[0],
    00037                 (argc == 1 ? "<stdin>" : argv[1]), Fstrerror(fdi));
    00038         exit(EXIT_FAILURE);
    00039     }
    00040     fdo = fdDup(STDOUT_FILENO);
    00041
    00042     {   rpmts ts = rpmtsCreate();
    00043         rpmVSFlags vsflags = 0;
    00044
    00045         /* XXX retain the ageless behavior of rpm2cpio */
    00046         vsflags |= _RPMVSF_NODIGESTS;
    00047         vsflags |= _RPMVSF_NOSIGNATURES;
    00048         vsflags |= RPMVSF_NOHDRCHK;
    00049         (void) rpmtsSetVSFlags(ts, vsflags);
    00050
    00051         rc = rpmReadPackageFile(ts, fdi, "rpm2cpio", &h);
    00052
    00053         ts = rpmtsFree(ts);
    00054     }
    00055
    00056     switch (rc) {
    00057     case RPMRC_OK:
    00058     case RPMRC_NOKEY:
    00059     case RPMRC_NOTTRUSTED:
    00060         break;
    00061     case RPMRC_NOTFOUND:
    00062         fprintf(stderr, _("argument is not an RPM package\n"));
    00063         exit(EXIT_FAILURE);
    00064         break;
    00065     case RPMRC_FAIL:
    00066     default:
    00067         fprintf(stderr, _("error reading header from package\n"));
    00068         exit(EXIT_FAILURE);
    00069         break;
    00070     }
    00071
    00072     /* Retrieve type of payload compression. */
    00073     {   const char *compr = headerGetString(h, RPMTAG_PAYLOADCOMPRESSOR);
    00074         rpmio_flags = rstrscat(NULL, "r.", compr ? compr : "gzip", NULL);
    00075     }
    00076
    00077     gzdi = Fdopen(fdi, rpmio_flags);    /* XXX gzdi == fdi */
    00078     free(rpmio_flags);
    00079
    00080     if (gzdi == NULL) {
    00081         fprintf(stderr, _("cannot re-open payload: %s\n"), Fstrerror(gzdi));
    00082         exit(EXIT_FAILURE);
    00083     }
    00084
    00085     rc = ufdCopy(gzdi, fdo);
    00086     rc = (rc <= 0) ? EXIT_FAILURE : EXIT_SUCCESS;
    00087     Fclose(fdo);
    00088
    00089     Fclose(gzdi);       /* XXX gzdi == fdi */
    00090
    00091     return rc;
    00092 }