Add routine to parse remote pubkeys.

2 files changed, 29 insertions, 0 deletions

diff --git a/src/libutil/http.c b/src/libutil/http.c
index c562cffa1..8fd0e7448 100644
--- a/src/libutil/http.c
+++ b/src/libutil/http.c
@@ -1768,3 +1768,30 @@ rspamd_http_connection_key_destroy (gpointer key)
 	g_assert (key != NULL);
 	REF_RELEASE (kp);
 }
+
+GString *
+rspamd_http_connection_make_peer_key (const gchar *key)
+{
+	guchar hashbuf[RSPAMD_HTTP_KEY_ID_LEN];
+	gchar *b32_id;
+	guchar *pk_decoded;
+	GString *res = NULL;
+	gsize dec_len;
+
+	pk_decoded = rspamd_decode_base32 (key, strlen (key), &dec_len);
+
+	if (pk_decoded != NULL) {
+		if (dec_len == crypto_box_PUBLICKEYBYTES) {
+			res = g_string_new (NULL);
+			blake2b (hashbuf, pk_decoded, NULL, sizeof (hashbuf), dec_len, 0);
+			b32_id = rspamd_encode_base32 (hashbuf, sizeof (hashbuf));
+
+			g_string_printf (res, "%s%s", b32_id, key);
+			g_free (b32_id);
+		}
+
+		g_free (pk_decoded);
+	}
+
+	return res;
+}
diff --git a/src/libutil/http.h b/src/libutil/http.h
index 7de3b2f68..b52671e10 100644
--- a/src/libutil/http.h
+++ b/src/libutil/http.h
@@ -195,6 +195,8 @@ GString *rspamd_http_connection_print_key (gpointer key, guint how);
  */
 void rspamd_http_connection_key_destroy (gpointer key);
 
+GString *rspamd_http_connection_make_peer_key (const gchar *key);
+
 /**
  * Handle a request using socket fd and user data ud
  * @param conn connection structure