Command-line option to dump SHA1 digests of all source files.

Now, when you call tor --digests, it dumps the SHA1 digest of each
source file that Tor was built with.  We support both 'sha1sum' and
'openssl sha1'.  If the user is building from a tarball and they
haven't edited anything, they don't need any program that calculates
SHA1.  If they _have_ modified a file but they don't have a program to
calculate SHA1, we try to build so we do not output digests.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/or/config.c b/src/or/config.c
index aa61ecf9a5..14418d2beb 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -3927,6 +3927,14 @@ options_init_from_torrc(int argc, char **argv)
     printf("Tor version %s.\n",get_version());
     exit(0);
   }
+  if (argc > 1 && (!strcmp(argv[1],"--digests"))) {
+    printf("Tor version %s.\n",get_version());
+    printf("%s", libor_get_digests());
+    printf("%s", ""
+#include "or_sha1.i"
+           );
+    exit(0);
+  }
 
   /* Go through command-line variables */
   if (!global_cmdline_options) {