Squashed 'third_party/rawrtc/re/' content from commit f3163ce8b
Change-Id: I6a235e6ac0f03269d951026f9d195da05c40fdab
git-subtree-dir: third_party/rawrtc/re
git-subtree-split: f3163ce8b526a13b35ef71ce4dd6f43585064d8a
diff --git a/src/stun/rep.c b/src/stun/rep.c
new file mode 100644
index 0000000..11ffbfd
--- /dev/null
+++ b/src/stun/rep.c
@@ -0,0 +1,121 @@
+/**
+ * @file stun/rep.c STUN reply
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+#include <re_types.h>
+#include <re_mem.h>
+#include <re_mbuf.h>
+#include <re_sa.h>
+#include <re_list.h>
+#include <re_stun.h>
+#include "stun.h"
+
+
+/**
+ * Send a STUN response message
+ *
+ * @param proto Transport Protocol
+ * @param sock Socket; UDP (struct udp_sock) or TCP (struct tcp_conn)
+ * @param dst Destination network address
+ * @param presz Number of bytes in preamble, if sending over TURN
+ * @param req Matching STUN request
+ * @param key Authentication key (optional)
+ * @param keylen Number of bytes in authentication key
+ * @param fp Use STUN Fingerprint attribute
+ * @param attrc Number of attributes to encode (variable arguments)
+ * @param ... Variable list of attribute-tuples
+ * Each attribute has 2 arguments, attribute type and value
+ *
+ * @return 0 if success, otherwise errorcode
+ */
+int stun_reply(int proto, void *sock, const struct sa *dst, size_t presz,
+ const struct stun_msg *req, const uint8_t *key,
+ size_t keylen, bool fp, uint32_t attrc, ...)
+{
+ struct mbuf *mb = NULL;
+ int err = ENOMEM;
+ va_list ap;
+
+ if (!sock || !req)
+ return EINVAL;
+
+ mb = mbuf_alloc(256);
+ if (!mb)
+ goto out;
+
+ va_start(ap, attrc);
+ mb->pos = presz;
+ err = stun_msg_vencode(mb, stun_msg_method(req),
+ STUN_CLASS_SUCCESS_RESP, stun_msg_tid(req),
+ NULL, key, keylen, fp, 0x00, attrc, ap);
+ va_end(ap);
+ if (err)
+ goto out;
+
+ mb->pos = presz;
+ err = stun_send(proto, sock, dst, mb);
+
+ out:
+ mem_deref(mb);
+
+ return err;
+}
+
+
+/**
+ * Send a STUN error response
+ *
+ * @param proto Transport Protocol
+ * @param sock Socket; UDP (struct udp_sock) or TCP (struct tcp_conn)
+ * @param dst Destination network address
+ * @param presz Number of bytes in preamble, if sending over TURN
+ * @param req Matching STUN request
+ * @param scode Status code
+ * @param reason Reason string
+ * @param key Authentication key (optional)
+ * @param keylen Number of bytes in authentication key
+ * @param fp Use STUN Fingerprint attribute
+ * @param attrc Number of attributes to encode (variable arguments)
+ * @param ... Variable list of attribute-tuples
+ * Each attribute has 2 arguments, attribute type and value
+ *
+ * @return 0 if success, otherwise errorcode
+ */
+int stun_ereply(int proto, void *sock, const struct sa *dst, size_t presz,
+ const struct stun_msg *req, uint16_t scode,
+ const char *reason, const uint8_t *key, size_t keylen,
+ bool fp, uint32_t attrc, ...)
+{
+ struct stun_errcode ec;
+ struct mbuf *mb = NULL;
+ int err = ENOMEM;
+ va_list ap;
+
+ if (!sock || !req || !scode || !reason)
+ return EINVAL;
+
+ mb = mbuf_alloc(256);
+ if (!mb)
+ goto out;
+
+ ec.code = scode;
+ ec.reason = (char *)reason;
+
+ va_start(ap, attrc);
+ mb->pos = presz;
+ err = stun_msg_vencode(mb, stun_msg_method(req), STUN_CLASS_ERROR_RESP,
+ stun_msg_tid(req), &ec, key, keylen,
+ fp, 0x00, attrc, ap);
+ va_end(ap);
+ if (err)
+ goto out;
+
+ mb->pos = presz;
+ err = stun_send(proto, sock, dst, mb);
+
+ out:
+ mem_deref(mb);
+
+ return err;
+}