3 files changed, 24 insertions, 2 deletions

@@ -459,12 +459,36 @@ static char *guess_defbranch(void)
 
 static int prepare_repo_cmd(struct cgit_context *ctx)
 {
+        char *user_home;
+        char *xdg_home;
         unsigned char sha1[20];
         int nongit = 0;
         int rc;
 
+        /* The path to the git repository. */
         setenv("GIT_DIR", ctx->repo->path, 1);
+
+        /* Do not look in /etc/ for gitconfig and gitattributes. */
+        setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
+        setenv("GIT_ATTR_NOSYSTEM", "1", 1);
+
+        /* We unset HOME and XDG_CONFIG_HOME before calling the git setup function
+         * so that we don't make unneccessary filesystem accesses. */
+        user_home = getenv("HOME");
+        xdg_home = getenv("XDG_CONFIG_HOME");
+        unsetenv("HOME");
+        unsetenv("XDG_CONFIG_HOME");
+
+        /* Setup the git directory and initialize the notes system. Both of these
+         * load local configuration from the git repository, so we do them both while
+         * the HOME variables are unset. */
         setup_git_directory_gently(&nongit);
+        init_display_notes(NULL);
+
+        /* We restore the unset variables afterward. */
+        setenv("HOME", user_home, 1);
+        setenv("XDG_CONFIG_HOME", xdg_home, 1);
+
         if (nongit) {
                 const char *name = ctx->repo->name;
                 rc = errno;
@@ -37,7 +37,6 @@ void cgit_print_commit(char *hex, const char *prefix)
         }
         info = cgit_parse_commit(commit);
 
-        init_display_notes(NULL);
         format_display_notes(sha1, &notes, PAGE_ENCODING, 0);
 
         load_ref_decorations(DECORATE_FULL_REFS);
@@ -403,7 +403,6 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                 commit->parents = NULL;
         }
 
-        init_display_notes(NULL);
         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
                 print_commit(commit, &rev);
                 free(commit->buffer);