rpm 5.3.12
tools/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 <rpmio.h>
00007 #include <rpmiotypes.h> /* XXX fnpyKey */
00008 #include <rpmurl.h>
00009 #include <rpmtypes.h>
00010 #include <rpmtag.h>
00011 #include <pkgio.h>
00012 
00013 #include <rpmts.h>
00014 
00015 #include "debug.h"
00016 
00017 int main(int argc, char **argv)
00018 {
00019     FD_t fdi, fdo;
00020     Header h;
00021     char * rpmio_flags;
00022     rpmRC rc;
00023     FD_t gzdi;
00024 
00025     setprogname(argv[0]);       /* Retrofit glibc __progname */
00026     if (argc == 1 || (argc == 2 && !strcmp(argv[1], "-")))
00027         fdi = fdDup(STDIN_FILENO);
00028     else {
00029         int ut = urlPath(argv[1], NULL);
00030         if (ut == URL_IS_HTTP || ut == URL_IS_HTTPS) {
00031             fprintf(stderr, "%s: %s: HTTP/HTTPS transport is non-functional.\n",
00032                 argv[0], argv[1]);
00033             exit(EXIT_FAILURE);
00034         }
00035         fdi = Fopen(argv[1], "r");
00036     }
00037 
00038     if (Ferror(fdi)) {
00039         fprintf(stderr, "%s: %s: %s\n", argv[0],
00040                 (argc == 1 ? "<stdin>" : argv[1]), Fstrerror(fdi));
00041         exit(EXIT_FAILURE);
00042     }
00043     fdo = fdDup(STDOUT_FILENO);
00044 
00045     {   rpmts ts = rpmtsCreate();
00046         rpmVSFlags vsflags = 0;
00047 
00048         /* XXX retain the ageless behavior of rpm2cpio */
00049         vsflags |= _RPMVSF_NODIGESTS;
00050         vsflags |= _RPMVSF_NOSIGNATURES;
00051         vsflags |= RPMVSF_NOHDRCHK;
00052         (void) rpmtsSetVSFlags(ts, vsflags);
00053 
00054         /*@-mustmod@*/      /* LCL: segfault */
00055         rc = rpmReadPackageFile(ts, fdi, "rpm2cpio", &h);
00056         /*@=mustmod@*/
00057 
00058         (void)rpmtsFree(ts); 
00059         ts = NULL;
00060     }
00061 
00062     switch (rc) {
00063     case RPMRC_OK:
00064     case RPMRC_NOKEY:
00065     case RPMRC_NOTTRUSTED:
00066         break;
00067     case RPMRC_NOTFOUND:
00068         fprintf(stderr, _("argument is not an RPM package\n"));
00069         exit(EXIT_FAILURE);
00070         break;
00071     case RPMRC_FAIL:
00072     default:
00073         fprintf(stderr, _("error reading header from package\n"));
00074         exit(EXIT_FAILURE);
00075         break;
00076     }
00077 
00078     /* Retrieve type of payload compression. */
00079     {   HE_t he = memset(alloca(sizeof(*he)), 0, sizeof(*he));
00080         const char * payload_compressor = NULL;
00081         char * t;
00082         int xx;
00083 
00084         he->tag = RPMTAG_PAYLOADCOMPRESSOR;
00085         xx = headerGet(h, he, 0);
00086         payload_compressor = (xx ? he->p.str : "gzip");
00087 
00088         rpmio_flags = t = alloca(sizeof("r.gzdio"));
00089         *t++ = 'r';
00090         if (!strcmp(payload_compressor, "gzip"))
00091             t = stpcpy(t, ".gzdio");
00092         if (!strcmp(payload_compressor, "bzip2"))
00093             t = stpcpy(t, ".bzdio");
00094         if (!strcmp(payload_compressor, "lzma"))
00095             t = stpcpy(t, ".lzdio");
00096         if (!strcmp(payload_compressor, "xz"))
00097             t = stpcpy(t, ".xzdio");
00098         he->p.ptr = _free(he->p.ptr);
00099     }
00100 
00101     gzdi = Fdopen(fdi, rpmio_flags);    /* XXX gzdi == fdi */
00102     if (gzdi == NULL) {
00103         fprintf(stderr, _("cannot re-open payload: %s\n"), Fstrerror(gzdi));
00104         exit(EXIT_FAILURE);
00105     }
00106 
00107     rc = ufdCopy(gzdi, fdo);
00108     rc = (rc <= 0) ? EXIT_FAILURE : EXIT_SUCCESS;
00109     Fclose(fdo);
00110 
00111     Fclose(gzdi);       /* XXX gzdi == fdi */
00112 
00113     return rc;
00114 }