[PATCH 1/2] lib/config: move g_key_File_get_string before continue

Subject:[PATCH 1/2] lib/config: move g_key_File_get_string before continue

Date:Sat, 8 Jan 2022 14:28:43 -0400

To:Austin Ray ,notmuch@notmuchmail.org

Cc:

From:David Bremner


In [1] Austin Ray reported some memory leaks in
notmuch_database_open. One of those leaks is caused by jumping to the
next key without freeing val. This change avoids that leak.

[1]: id:20220105224538.m36lnjn7rf3ieonc@athena
---
 lib/config.cc | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/lib/config.cc b/lib/config.cc
index 7a2882de..b9e11a54 100644
--- a/lib/config.cc
+++ b/lib/config.cc
@@ -435,11 +435,6 @@ _notmuch_config_load_from_file (notmuch_database_t *notmuch,
 	for (gchar **keys_p = keys; *keys_p; keys_p++) {
 	    char *absolute_key = talloc_asprintf (notmuch, "%s.%s", *grp,  *keys_p);
 	    char *normalized_val;
-	    val = g_key_file_get_string (file, *grp, *keys_p, NULL);
-	    if (! val) {
-		status = NOTMUCH_STATUS_FILE_ERROR;
-		goto DONE;
-	    }
 
 	    /* If we opened from a given path, do not overwrite it */
 	    if (strcmp (absolute_key, "database.path") == 0 &&
@@ -447,6 +442,12 @@ _notmuch_config_load_from_file (notmuch_database_t *notmuch,
 		notmuch->xapian_db)
 		continue;
 
+	    val = g_key_file_get_string (file, *grp, *keys_p, NULL);
+	    if (! val) {
+		status = NOTMUCH_STATUS_FILE_ERROR;
+		goto DONE;
+	    }
+
 	    normalized_val = _expand_path (notmuch, absolute_key, val);
 	    _notmuch_string_map_set (notmuch->config, absolute_key, normalized_val);
 	    g_free (val);
-- 
2.34.1

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