Fix the ability to specify an OSP token for an outbound IAX2 call.

When this patch was originally submitted, the code allowed for the token to be
set via a channel variable.  I decided that a cleaner approach would be to
integrate it into the CHANNEL() function.  Unfortunately, that is not a suitable
approach.  It's not possible to get the value set on the channel soon enough
using that method.  So, go back to the simple channel variable method.

(closes issue #16711)
Reported by: homesick
Patches:
      iax-svn.diff uploaded by homesick (license 91)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@243482 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -1189,7 +1189,6 @@ static void prune_users(void);
 static void iax2_free_variable_datastore(void *);
 
 static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *preparse, char *buf, size_t buflen);
-static int acf_channel_write(struct ast_channel *chan, const char *function, char *data, const char *value);
 static int decode_frame(ast_aes_decrypt_key *dcx, struct ast_iax2_full_hdr *fh, struct ast_frame *f, int *datalen);
 static int encrypt_frame(ast_aes_encrypt_key *ecx, struct ast_iax2_full_hdr *fh, unsigned char *poo, int *datalen);
 static void build_ecx_key(const unsigned char *digest, struct chan_iax2_pvt *pvt);
@@ -1222,7 +1221,6 @@ static const struct ast_channel_tech iax2_tech = {
 	.transfer = iax2_transfer,
 	.fixup = iax2_fixup,
 	.func_channel_read = acf_channel_read,
-	.func_channel_write = acf_channel_write,
 };
 
 static void mwi_event_cb(const struct ast_event *event, void *userdata)
@@ -4990,8 +4988,8 @@ static int iax2_call(struct ast_channel *c, char *dest, int timeout)
 		iaxs[callno]->initid = iax2_sched_add(sched, autokill * 2, auto_congest, CALLNO_TO_PTR(callno));
 	}
 
-	/* Check if there is an OSP token set by IAXCHANINFO function */
+	/* Check if there is an OSP token */
-	osp_token_ptr = iaxs[callno]->osptoken;
+	osp_token_ptr = pbx_builtin_getvar_helper(c, "IAX2OSPTOKEN");
 	if (!ast_strlen_zero(osp_token_ptr)) {
 		if ((osp_token_length = strlen(osp_token_ptr)) <= IAX_MAX_OSPTOKEN_SIZE) {
 			osp_block_index = 0;
@@ -13548,34 +13546,6 @@ static struct ast_custom_function iaxpeer_function = {
 	.read = function_iaxpeer,
 };
 
-static int acf_channel_write(struct ast_channel *chan, const char *function, char *args, const char *value)
-{
-	struct chan_iax2_pvt *pvt;
-	unsigned int callno;
-	int res = 0;
-
-	if (!chan || chan->tech != &iax2_tech) {
-		ast_log(LOG_ERROR, "This function requires a valid IAX2 channel\n");
-		return -1;
-	}
-
-	callno = PTR_TO_CALLNO(chan->tech_pvt);
-	ast_mutex_lock(&iaxsl[callno]);
-	if (!(pvt = iaxs[callno])) {
-		ast_mutex_unlock(&iaxsl[callno]);
-		return -1;
-	}
-
-	if (!strcasecmp(args, "osptoken"))
-		ast_string_field_set(pvt, osptoken, value);
-	else
-		res = -1;
-
-	ast_mutex_unlock(&iaxsl[callno]);
-
-	return res;
-}
-
 static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *args, char *buf, size_t buflen)
 {
 	struct chan_iax2_pvt *pvt;

funcs/func_channel.c

@@ -204,9 +204,6 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 				</enumlist>
 				<para><emphasis>chan_iax2</emphasis> provides the following additional options:</para>
 				<enumlist>
-					<enum name="osptoken">
-						<para>R/W Get or set the OSP token information for a call.</para>
-					</enum>
 					<enum name="peerip">
 						<para>R/O Get the peer's ip address.</para>
 					</enum>