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diff -up libgcrypt-1.8.5/src/fips.c.use-fipscheck libgcrypt-1.8.5/src/fips.c
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--- libgcrypt-1.8.5/src/fips.c.use-fipscheck 2017-11-23 19:16:58.000000000 +0100
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+++ libgcrypt-1.8.5/src/fips.c 2020-04-23 10:18:36.235764741 +0200
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@@ -581,23 +581,50 @@ run_random_selftests (void)
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return !!err;
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}
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+#ifdef ENABLE_HMAC_BINARY_CHECK
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+static int
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+get_library_path(const char *libname, const char *symbolname, char *path, size_t pathlen)
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+{
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+ Dl_info info;
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+ void *dl, *sym;
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+ int rv = -1;
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+
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+ dl = dlopen(libname, RTLD_LAZY);
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+ if (dl == NULL) {
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+ return -1;
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+ }
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+
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+ sym = dlsym(dl, symbolname);
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+
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+ if (sym != NULL && dladdr(sym, &info)) {
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+ strncpy(path, info.dli_fname, pathlen-1);
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+ path[pathlen-1] = '\0';
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+ rv = 0;
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+ }
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+
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+ dlclose(dl);
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+
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+ return rv;
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+}
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+#endif
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+
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/* Run an integrity check on the binary. Returns 0 on success. */
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static int
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check_binary_integrity (void)
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{
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#ifdef ENABLE_HMAC_BINARY_CHECK
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gpg_error_t err;
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- Dl_info info;
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+ char libpath[4096];
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unsigned char digest[32];
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int dlen;
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char *fname = NULL;
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- const char key[] = "What am I, a doctor or a moonshuttle conductor?";
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-
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- if (!dladdr ("gcry_check_version", &info))
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+ const char key[] = "orboDeJITITejsirpADONivirpUkvarP";
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+
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+ if (get_library_path ("libgcrypt.so.20", "gcry_check_version", libpath, sizeof(libpath)))
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err = gpg_error_from_syserror ();
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else
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{
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- dlen = _gcry_hmac256_file (digest, sizeof digest, info.dli_fname,
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+ dlen = _gcry_hmac256_file (digest, sizeof digest, libpath,
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key, strlen (key));
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if (dlen < 0)
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err = gpg_error_from_syserror ();
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@@ -605,7 +632,7 @@ check_binary_integrity (void)
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err = gpg_error (GPG_ERR_INTERNAL);
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else
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{
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- fname = xtrymalloc (strlen (info.dli_fname) + 1 + 5 + 1 );
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+ fname = xtrymalloc (strlen (libpath) + 1 + 5 + 1 );
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if (!fname)
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err = gpg_error_from_syserror ();
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else
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@@ -614,7 +641,7 @@ check_binary_integrity (void)
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char *p;
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/* Prefix the basename with a dot. */
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- strcpy (fname, info.dli_fname);
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+ strcpy (fname, libpath);
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p = strrchr (fname, '/');
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if (p)
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p++;
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