File _service:extract_file:backport-libgcrypt-1.8.5-... of Package libgcrypt

File _service:extract_file:backport-libgcrypt-1.8.5-use-fipscheck.patch of Package libgcrypt (Revision 8eb1e3283a8d47e8d0cd57e744b27bbe)

Currently displaying revision 8eb1e3283a8d47e8d0cd57e744b27bbe , Show latest

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