From 33a3b21fa6926e8cbe61725dd80d258951766e2f Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordberg.se>
Date: Wed, 28 Aug 2013 13:48:49 +0200
Subject: Keep Proxy-State attributes in all replies to clients.

Closes RADSECPROXY-52.
---
 radmsg.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

(limited to 'radmsg.c')

diff --git a/radmsg.c b/radmsg.c
index 432f88d..0289bba 100644
--- a/radmsg.c
+++ b/radmsg.c
@@ -57,6 +57,30 @@ int radmsg_add(struct radmsg *msg, struct tlv *attr) {
     return list_push(msg->attrs, attr);
 }
 
+/** Return a new list with all tlv's in \a msg of type \a type. The
+ * caller is responsible for freeing the list by calling \a
+ * list_free(). */
+struct list *
+radmsg_getalltype(const struct radmsg *msg, uint8_t type)
+{
+    struct list *list = NULL;
+    struct list_node *node = NULL;
+
+    if (!msg || !msg->attrs)
+        return NULL;
+    list = list_create();
+    if (!list)
+        return NULL;
+
+    for (node = list_first(msg->attrs); node; node = list_next(node))
+        if (((struct tlv *) node->data)->t == type)
+            if (list_push(list, node->data) != 1) {
+                list_free(list);
+                return NULL;
+            }
+    return list;
+}
+
 /* returns first tlv of the given type */
 struct tlv *radmsg_gettype(struct radmsg *msg, uint8_t type) {
     struct list_node *node;
@@ -72,6 +96,33 @@ struct tlv *radmsg_gettype(struct radmsg *msg, uint8_t type) {
     return NULL;
 }
 
+/** Copy all attributes of type \a type from \a src to \a dst.
+ *
+ * If all attributes were copied successfully, the number of
+ * attributes copied is returned.
+ *
+ * If copying failed, a negative number is returned. The number
+ * returned is 0 minus the number of attributes successfully copied
+ * before the failure. */
+int radmsg_copy_attrs(struct radmsg *dst,
+                      const struct radmsg *src,
+                      uint8_t type)
+{
+    struct list_node *node = NULL;
+    struct list *list = radmsg_getalltype(src, type);
+    int n = 0;
+
+    for (node = list_first(list); node; node = list_next(node)) {
+        if (radmsg_add(dst, (struct tlv *) node->data) != 1) {
+            n = -n;
+            break;
+        }
+        n++;
+    }
+    list_free(list);
+    return n;
+}
+
 int _checkmsgauth(unsigned char *rad, uint8_t *authattr, uint8_t *secret) {
     static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
     static unsigned char first = 1;
-- 
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