[taler-merchant] branch master updated: implement wire subject parser

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grothoff pushed a commit to branch master
in repository merchant.

The following commit(s) were added to refs/heads/master by this push:
     new 3e8115c5 implement wire subject parser
3e8115c5 is described below

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

    implement wire subject parser
---
 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
index 77cec3d3..2c62b446 100644
--- 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;
 }
 
 

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