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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;
    00020     rpmRC rc;
    00021     FD_t gzdi;
    00022
    00023     setprogname(argv[0]);       /* Retrofit glibc __progname */
    00024     if (argc == 1)
    00025         fdi = fdDup(STDIN_FILENO);
    00026     else
    00027         fdi = Fopen(argv[1], "r.ufdio");
    00028
    00029     if (Ferror(fdi)) {
    00030         fprintf(stderr, "%s: %s: %s\n", argv[0],
    00031                 (argc == 1 ? "<stdin>" : argv[1]), Fstrerror(fdi));
    00032         exit(EXIT_FAILURE);
    00033     }
    00034     fdo = fdDup(STDOUT_FILENO);
    00035     rpmReadConfigFiles(NULL, NULL);
    00036
    00037     {   rpmts ts = rpmtsCreate();
    00038         rpmVSFlags vsflags = 0;
    00039
    00040         /* XXX retain the ageless behavior of rpm2cpio */
    00041         vsflags |= _RPMVSF_NODIGESTS;
    00042         vsflags |= _RPMVSF_NOSIGNATURES;
    00043         vsflags |= RPMVSF_NOHDRCHK;
    00044         (void) rpmtsSetVSFlags(ts, vsflags);
    00045
    00046              /* LCL: segfault */
    00047         rc = rpmReadPackageFile(ts, fdi, "rpm2cpio", &h);
    00048
    00049         ts = rpmtsFree(ts);
    00050     }
    00051
    00052     switch (rc) {
    00053     case RPMRC_OK:
    00054     case RPMRC_NOKEY:
    00055     case RPMRC_NOTTRUSTED:
    00056         break;
    00057     case RPMRC_NOTFOUND:
    00058         fprintf(stderr, _("argument is not an RPM package\n"));
    00059         exit(EXIT_FAILURE);
    00060         break;
    00061     case RPMRC_FAIL:
    00062     default:
    00063         fprintf(stderr, _("error reading header from package\n"));
    00064         exit(EXIT_FAILURE);
    00065         break;
    00066     }
    00067
    00068     /* Retrieve type of payload compression. */
    00069     {   const char * payload_compressor = NULL;
    00070         struct rpmtd_s pc;
    00071
    00072         headerGet(h, RPMTAG_PAYLOADCOMPRESSOR, &pc, HEADERGET_DEFAULT);
    00073         payload_compressor = rpmtdGetString(&pc);
    00074         if (!payload_compressor)
    00075             payload_compressor = "gzip";
    00076
    00077         if (!strcmp(payload_compressor, "gzip"))
    00078             rpmio_flags = "r.gzdio";
    00079         if (!strcmp(payload_compressor, "bzip2"))
    00080             rpmio_flags = "r.bzdio";
    00081         if (!strcmp(payload_compressor, "xz"))
    00082             rpmio_flags = "r.xzdio";
    00083         if (!strcmp(payload_compressor, "lzma"))
    00084             rpmio_flags = "r.lzdio";
    00085         rpmtdFreeData(&pc);
    00086     }
    00087
    00088     gzdi = Fdopen(fdi, rpmio_flags);    /* XXX gzdi == fdi */
    00089     if (gzdi == NULL) {
    00090         fprintf(stderr, _("cannot re-open payload: %s\n"), Fstrerror(gzdi));
    00091         exit(EXIT_FAILURE);
    00092     }
    00093
    00094     rc = ufdCopy(gzdi, fdo);
    00095     rc = (rc <= 0) ? EXIT_FAILURE : EXIT_SUCCESS;
    00096     Fclose(fdo);
    00097
    00098     Fclose(gzdi);       /* XXX gzdi == fdi */
    00099
    00100     return rc;
    00101 }