merchant

commit 3e8115c5e4a2c9a7f37202c63f107230d8087c42
parent ab267651d6dd065b16f2d38fb6651e9db368a9e9
Author: Christian Grothoff <christian@grothoff.org>
Date:   Wed, 12 Apr 2023 15:58:55 +0200

implement wire subject parser

Diffstat:
M
src/backend/taler-merchant-wirewatch.c
 | 
28
+++++++++++++++++++++++++---

1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/src/backend/taler-merchant-wirewatch.c b/src/backend/taler-merchant-wirewatch.c
@@ -178,7 +178,8 @@ shutdown_task (void *cls)
 /**
  * Parse @a subject from wire transfer into @a wtid and @a exchange_url.
  *
- * @param subject wire transfer subject to parse
+ * @param subject wire transfer subject to parse;
+ *        format is "$WTID $URL"
  * @param[out] wtid wire transfer ID to extract
  * @param[out] exchange_url set to exchange URL
  * @return #GNUNET_OK on success
@@ -188,8 +189,29 @@ parse_subject (const char *subject,
                struct TALER_WireTransferIdentifierRawP *wtid,
                char **exchange_url)
 {
-  *exchange_url = NULL;
-  return GNUNET_SYSERR;
+  const char *space;
+
+  space = strchr (subject, ' ');
+  if (NULL == space)
+    return GNUNET_NO;
+  if (GNUNET_OK !=
+      GNUNET_STRINGS_string_to_data (subject,
+                                     space - subject,
+                                     wtid,
+                                     sizeof (*wtid)))
+    return GNUNET_NO;
+  space++;
+  if (! TALER_url_valid_charset (space))
+    return GNUNET_NO;
+  if ( (0 != strncasecmp ("http://",
+                          space,
+                          strlen ("http://"))) &&
+       (0 != strncasecmp ("https://",
+                          space,
+                          strlen ("https://"))) )
+    return GNUNET_NO;
+  *exchange_url = GNUNET_strdup (space);
+  return GNUNET_OK;
 }