exchange

commit 67e4c8b94aa7198cc6a98eb4cf67ef0d02222b20
parent 607ba0aec449eb3a04236330c5244df057922b76
Author: Christian Grothoff <christian@grothoff.org>
Date:   Sat, 10 Oct 2026 22:42:42 +0200

fix language check

Diffstat:
M
src/mhd/mhd_legal.c
 | 
38
+++++++++++++++++++++++++++++++++++++-

1 file changed, 37 insertions(+), 1 deletion(-)
diff --git a/src/mhd/mhd_legal.c b/src/mhd/mhd_legal.c
@@ -121,6 +121,42 @@ struct TALER_MHD_Legal
 };
 
 
+/**
+ * Check if the comma-separated list @a langs already contains
+ * the entry @a lang.
+ *
+ * @param langs comma-separated list of languages
+ * @param lang language to look for
+ * @return true if @a lang is an entry of @a langs
+ */
+static bool
+lang_in_list (const char *langs,
+              const char *lang)
+{
+  size_t len = strlen (lang);
+  const char *pos = langs;
+
+  while (NULL != pos)
+  {
+    const char *end = strchr (pos,
+                              ',');
+    size_t elen = (NULL == end)
+                  ? strlen (pos)
+                  : (size_t) (end - pos);
+
+    if ( (elen == len) &&
+         (0 == strncasecmp (pos,
+                            lang,
+                            len)) )
+      return true;
+    pos = (NULL == end)
+          ? NULL
+          : end + 1;
+  }
+  return false;
+}
+
+
 enum MHD_Result
 TALER_MHD_reply_legal (struct MHD_Connection *conn,
                        struct TALER_MHD_Legal *legal)
@@ -209,7 +245,7 @@ TALER_MHD_reply_legal (struct MHD_Connection *conn,
       {
         langs = GNUNET_strdup (p->language);
       }
-      else if (NULL == strstr (langs,
+      else if (! lang_in_list (langs,
                                p->language))
       {
         char *tmp = langs;