File libgcrypt-1.10.0-use-fipscheck.patch of Package libgcrypt

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File libgcrypt-1.10.0-use-fipscheck.patch of Package libgcrypt (Revision 20cca3e39ad2c8be8cd3f6796522b5de)

Currently displaying revision 20cca3e39ad2c8be8cd3f6796522b5de , Show latest

Index: libgcrypt-1.10.1/src/fips.c
===================================================================
--- libgcrypt-1.10.1.orig/src/fips.c
+++ libgcrypt-1.10.1/src/fips.c
@@ -949,6 +949,65 @@ hmac256_check (const char *filename, con
   return err;
 }
 
+static int
+get_library_path(const char *libname, const char *symbolname,
+                 char *path, size_t pathlen)
+{
+  Dl_info info;
+  void *dl, *sym;
+  int rv = -1;
+
+  dl = dlopen(libname, RTLD_LAZY);
+  if (dl == NULL)
+    return -1;
+
+  sym = dlsym(dl, symbolname);
+  if (sym != NULL && dladdr(sym, &info))
+    {
+      strncpy(path, info.dli_fname, pathlen-1);
+      path[pathlen-1] = '\0';
+      rv = 0;
+    }
+
+  dlclose(dl);
+
+  return rv;
+}
+
+static gpg_error_t
+get_hmac_path(char **fname, char *suffix)
+{
+  char libpath[4096];
+  gpg_error_t err;
+
+  if (get_library_path ("libgcrypt.so.20", "gcry_check_version",
+                        libpath, sizeof(libpath)))
+    err = gpg_error_from_syserror ();
+  else
+    {
+      *fname = _gcry_malloc (strlen (libpath) + 1 + 5 + 1 );
+      if (!*fname)
+        err = gpg_error_from_syserror ();
+      else
+        {
+          char *p;
+
+          /* Prefix the basename with a dot.  */
+          strcpy (*fname, libpath);
+          p = strrchr (*fname, '/');
+          if (p)
+            p++;
+          else
+            p = *fname;
+          memmove (p+1, p, strlen (p)+1);
+          *p = '.';
+          strcat (*fname, suffix);
+          err = 0;
+      }
+    }
+  return err;
+}
+
 /* Run an integrity check on the binary.  Returns 0 on success.  */
 static int
 check_binary_integrity (void)
@@ -997,6 +1056,33 @@ run_hmac_sha256_selftests (int extended)
 }
 #endif
 
+int
+can_skip_selftests(void)
+{
+  char *fname = NULL;
+  int ret = 0;
+
+  if (fips_mode())
+    return 0;
+
+  if (get_hmac_path(&fname, ".fips"))
+    return 0;
+
+  /* check the hmac presence */
+  if (access(fname, F_OK))
+    /* no hmac file is present, don't run the tests */
+    if (errno == ENOENT)
+      ret = 1;
+  /* otherwise one of these events happened:
+   * access() returned 0
+   *   -> run the tests
+   * some error other than ENOENT occurred
+   *   -> run the tests anyway and let them fail
+   */
+
+  xfree(fname);
+  return ret;
+}
 
 /* Run the self-tests.  If EXTENDED is true, extended versions of the
    selftest are run, that is more tests than required by FIPS.  */
@@ -1006,6 +1092,9 @@ _gcry_fips_run_selftests (int extended)
   enum module_states result = STATE_ERROR;
   gcry_err_code_t ec = GPG_ERR_SELFTEST_FAILED;
 
+  if (can_skip_selftests())
+    return 0;
+
   if (fips_mode ())
     fips_new_state (STATE_SELFTEST);

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File libgcrypt-1.10.0-use-fipscheck.patch of Package libgcrypt (Revision 20cca3e39ad2c8be8cd3f6796522b5de)

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