Merge branch 'snapshot-fixes'

1 files changed, 5 insertions, 3 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index 5f813fc..f25613e 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -82,111 +82,113 @@ static const struct cgit_snapshot_format *get_format(const char *filename)
 
 static int make_snapshot(const struct cgit_snapshot_format *format,
                          const char *hex, const char *prefix,
                          const char *filename)
 {
         struct archiver_args args;
         struct commit *commit;
         unsigned char sha1[20];
 
         if(get_sha1(hex, sha1)) {
                 cgit_print_error(fmt("Bad object id: %s", hex));
                 return 1;
         }
         commit = lookup_commit_reference(sha1);
         if(!commit) {
                 cgit_print_error(fmt("Not a commit reference: %s", hex));
                 return 1;
         }
         memset(&args, 0, sizeof(args));
         if (prefix) {
                 args.base = fmt("%s/", prefix);
                 args.baselen = strlen(prefix) + 1;
         } else {
                 args.base = "";
                 args.baselen = 0;
         }
         args.tree = commit->tree;
         args.time = commit->date;
         ctx.page.mimetype = xstrdup(format->mimetype);
         ctx.page.filename = xstrdup(filename);
         cgit_print_http_headers(&ctx);
         format->write_func(&args);
         return 0;
 }
 
 /* Try to guess the requested revision from the requested snapshot name.
  * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become
  * "cgit-0.7.2". If this is a valid commit object name we've got a winner.
  * Otherwise, if the snapshot name has a prefix matching the result from
  * repo_basename(), we strip the basename and any following '-' and '_'
  * characters ("cgit-0.7.2" -> "0.7.2") and check the resulting name once
  * more. If this still isn't a valid commit object name, we check if pre-
  * pending a 'v' to the remaining snapshot name ("0.7.2" -> "v0.7.2") gives
  * us something valid.
  */
 static const char *get_ref_from_filename(const char *url, const char *filename,
                                          const struct cgit_snapshot_format *format)
 {
         const char *reponame;
         unsigned char sha1[20];
         char *snapshot;
 
         snapshot = xstrdup(filename);
         snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0';
         fprintf(stderr, "snapshot=%s\n", snapshot);
 
         if (get_sha1(snapshot, sha1) == 0)
                 return snapshot;
 
         reponame = cgit_repobasename(url);
         fprintf(stderr, "reponame=%s\n", reponame);
         if (prefixcmp(snapshot, reponame) == 0) {
                 snapshot += strlen(reponame);
                 while (snapshot && (*snapshot == '-' || *snapshot == '_'))
                         snapshot++;
         }
 
         if (get_sha1(snapshot, sha1) == 0)
                 return snapshot;
 
         snapshot = fmt("v%s", snapshot);
         if (get_sha1(snapshot, sha1) == 0)
                 return snapshot;
 
         return NULL;
 }
 
 void cgit_print_snapshot(const char *head, const char *hex,
                          const char *filename, int snapshots, int dwim)
 {
         const struct cgit_snapshot_format* f;
         char *prefix = NULL;
 
         f = get_format(filename);
         if (!f) {
                 ctx.page.mimetype = "text/html";
                 cgit_print_http_headers(&ctx);
                 cgit_print_docstart(&ctx);
                 cgit_print_pageheader(&ctx);
                 cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
                 cgit_print_docend();
                 return;
         }
 
         if (!hex && dwim) {
                 hex = get_ref_from_filename(ctx.repo->url, filename, f);
-                if (hex != NULL) {
-                        prefix = xstrdup(filename);
-                        prefix[strlen(filename) - strlen(f->suffix)] = '\0';
+                if (hex == NULL) {
+                        html_status(404, "Not found", 0);
+                        return;
                 }
+                prefix = xstrdup(filename);
+                prefix[strlen(filename) - strlen(f->suffix)] = '\0';
         }
 
         if (!hex)
                 hex = head;
 
         if (!prefix)
                 prefix = xstrdup(cgit_repobasename(ctx.repo->url));
 
         make_snapshot(f, hex, prefix, filename);
         free(prefix);
 }