ast_str: Fix improper member access to struct ast_str members.

Accessing members of struct ast_str outside of the string manipulation API
routines is invalid since struct ast_str is supposed to be treated as
opaque.

Review: https://reviewboard.asterisk.org/r/4194/
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Merged revisions 428244 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 428245 from http://svn.asterisk.org/svn/asterisk/branches/12
........

Merged revisions 428246 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@428255 65c4cc65-6c06-0410-ace0-fbb531ad65f3

2 files changed, 10 insertions, 10 deletions

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index ef074a398..192956362 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -9589,7 +9589,7 @@ static unsigned int set_pvt_allowed_methods(struct sip_pvt *pvt, struct sip_requ
 	This is enabled if pedanticsipchecking is enabled */
 static void lws2sws(struct ast_str *data)
 {
-	char *msgbuf = data->str;
+	char *msgbuf = ast_str_buffer(data);
 	int len = ast_str_strlen(data);
 	int h = 0, t = 0;
 	int lws = 0;
@@ -9630,7 +9630,7 @@ static void lws2sws(struct ast_str *data)
 			lws = 0;
 	}
 	msgbuf[t] = '\0';
-	data->used = t;
+	ast_str_update(data);
 }
 
 /*! \brief Parse a SIP message
@@ -9638,7 +9638,7 @@ static void lws2sws(struct ast_str *data)
 */
 static int parse_request(struct sip_request *req)
 {
-	char *c = req->data->str;
+	char *c = ast_str_buffer(req->data);
 	ptrdiff_t *dst = req->header;
 	int i = 0, lim = SIP_MAX_HEADERS - 1;
 	unsigned int skipping_headers = 0;
@@ -13715,12 +13715,12 @@ static int transmit_response_with_sdp(struct sip_pvt *p, const char *msg, const
 /*! \brief Parse first line of incoming SIP request */
 static int determine_firstline_parts(struct sip_request *req)
 {
-	char *e = ast_skip_blanks(req->data->str);	/* there shouldn't be any */
+	char *e = ast_skip_blanks(ast_str_buffer(req->data));	/* there shouldn't be any */
 	char *local_rlpart1;
 
 	if (!*e)
 		return -1;
-	req->rlpart1 = e - req->data->str;	/* method or protocol */
+	req->rlpart1 = e - ast_str_buffer(req->data);	/* method or protocol */
 	local_rlpart1 = e;
 	e = ast_skip_nonblanks(e);
 	if (*e)
@@ -13734,7 +13734,7 @@ static int determine_firstline_parts(struct sip_request *req)
 	if (!strcasecmp(local_rlpart1, "SIP/2.0") ) { /* We have a response */
 		if (strlen(e) < 3)	/* status code is 3 digits */
 			return -1;
-		req->rlpart2 = e - req->data->str;
+		req->rlpart2 = e - ast_str_buffer(req->data);
 	} else { /* We have a request */
 		if ( *e == '<' ) { /* XXX the spec says it must not be in <> ! */
 			ast_debug(3, "Oops. Bogus uri in <> %s\n", e);
@@ -13742,7 +13742,7 @@ static int determine_firstline_parts(struct sip_request *req)
 			if (!*e)
 				return -1;
 		}
-		req->rlpart2 = e - req->data->str;	/* URI */
+		req->rlpart2 = e - ast_str_buffer(req->data);	/* URI */
 		e = ast_skip_nonblanks(e);
 		if (*e)
 			*e++ = '\0';
@@ -16554,7 +16554,7 @@ static enum check_auth_result check_auth(struct sip_pvt *p, struct sip_request *
 		return AUTH_SECRET_FAILED; /*! XXX \todo need a better return code here */
 	}
 
-	c = buf->str;
+	c = ast_str_buffer(buf);
 
 	sip_digest_parser(c, keys);
 
@@ -16893,7 +16893,7 @@ static void transmit_fake_auth_response(struct sip_pvt *p, struct sip_request *r
 		return;
 	}
 
-	c = buf->str;
+	c = ast_str_buffer(buf);
 
 	while (c && *(c = ast_skip_blanks(c))) { /* lookup for keys */
 		for (i = keys; i->key != NULL; i++) {
diff --git a/channels/sip/security_events.c b/channels/sip/security_events.c
index 28a14f8a5..691c5bde1 100644
--- a/channels/sip/security_events.c
+++ b/channels/sip/security_events.c
@@ -311,7 +311,7 @@ int sip_report_security_event(const struct sip_pvt *p, const struct sip_request
 		authtoken = sip_get_header(req, reqheader);
 		buf = ast_str_thread_get(&check_auth_buf, CHECK_AUTH_BUF_INITLEN);
 		ast_str_set(&buf, 0, "%s", authtoken);
-		c = buf->str;
+		c = ast_str_buffer(buf);
 
 		sip_digest_parser(c, keys);