[asterisk-commits] mnicholson: branch 1.4 r271689 - in /branches/1.4: channels/ configs/
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Tue Jun 22 07:52:31 CDT 2010
Author: mnicholson
Date: Tue Jun 22 07:52:27 2010
New Revision: 271689
URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=271689
Log:
Modify chan_sip's packet generation api to automatically calculate the Content-Length. This is done by storing packet content in a buffer until it is actually time to send the packet, at which time the size of the packet is calculated. This change was made to ensure that the Content-Length is always correct.
Modified:
branches/1.4/channels/chan_sip.c
branches/1.4/configs/sip_notify.conf.sample
Modified: branches/1.4/channels/chan_sip.c
URL: http://svnview.digium.com/svn/asterisk/branches/1.4/channels/chan_sip.c?view=diff&rev=271689&r1=271688&r2=271689
==============================================================================
--- branches/1.4/channels/chan_sip.c (original)
+++ branches/1.4/channels/chan_sip.c Tue Jun 22 07:52:27 2010
@@ -635,6 +635,7 @@
char *header[SIP_MAX_HEADERS];
char *line[SIP_MAX_LINES];
char data[SIP_MAX_PACKET];
+ char content[SIP_MAX_PACKET];
unsigned int sdp_start; /*!< the line number where the SDP begins */
unsigned int sdp_count; /*!< the number of lines of SDP */
AST_LIST_ENTRY(sip_request) next;
@@ -1561,8 +1562,8 @@
static void build_callid_registry(struct sip_registry *reg, struct in_addr ourip, const char *fromdomain);
static void make_our_tag(char *tagbuf, size_t len);
static int add_header(struct sip_request *req, const char *var, const char *value);
-static int add_header_contentLength(struct sip_request *req, int len);
-static int add_line(struct sip_request *req, const char *line);
+static int add_content(struct sip_request *req, const char *line);
+static int finalize_content(struct sip_request *req);
static int add_text(struct sip_request *req, const char *text);
static int add_digit(struct sip_request *req, char digit, unsigned int duration);
static int add_vidupdate(struct sip_request *req);
@@ -2378,6 +2379,7 @@
{
int res;
+ finalize_content(req);
add_blank(req);
if (sip_debug_test_pvt(p)) {
const struct sockaddr_in *dst = sip_real_dst(p);
@@ -2412,6 +2414,7 @@
{
int res;
+ finalize_content(req);
add_blank(req);
if (sip_debug_test_pvt(p)) {
if (ast_test_flag(&p->flags[0], SIP_NAT_ROUTE))
@@ -6034,7 +6037,7 @@
/*! \brief Add header to SIP message */
static int add_header(struct sip_request *req, const char *var, const char *value)
{
- int maxlen = sizeof(req->data) - 4 - req->len; /* 4 bytes are for two \r\n ? */
+ int maxlen = sizeof(req->data) - 4 - req->len - strlen(req->content); /* 4 bytes are for two \r\n ? */
if (req->headers == SIP_MAX_HEADERS) {
ast_log(LOG_WARNING, "Out of SIP header space\n");
@@ -6064,35 +6067,42 @@
}
/*! \brief Add 'Content-Length' header to SIP message */
-static int add_header_contentLength(struct sip_request *req, int len)
+static int finalize_content(struct sip_request *req)
{
char clen[10];
- snprintf(clen, sizeof(clen), "%d", len);
- return add_header(req, "Content-Length", clen);
+ if (req->lines) {
+ ast_log(LOG_WARNING, "finalize_content() called on a message that has already been finalized\n");
+ return -1;
+ }
+
+ snprintf(clen, sizeof(clen), "%zd", strlen(req->content));
+ add_header(req, "Content-Length", clen);
+
+ if (!ast_strlen_zero(req->content)) {
+ snprintf(req->data + req->len, sizeof(req->data) - req->len, "\r\n%s", req->content);
+ req->len += strlen(req->data + req->len);
+ }
+
+ req->lines = !ast_strlen_zero(req->content);
+ return 0;
}
/*! \brief Add content (not header) to SIP message */
-static int add_line(struct sip_request *req, const char *line)
-{
- if (req->lines == SIP_MAX_LINES) {
- ast_log(LOG_WARNING, "Out of SIP line space\n");
+static int add_content(struct sip_request *req, const char *line)
+{
+ if (req->lines) {
+ ast_log(LOG_WARNING, "Can't add more content when the content has been finalized\n");
return -1;
}
- if (!req->lines) {
- /* Add extra empty return */
- snprintf(req->data + req->len, sizeof(req->data) - req->len, "\r\n");
- req->len += strlen(req->data + req->len);
- }
- if (req->len >= sizeof(req->data) - 4) {
+
+ if (req->len + strlen(req->content) + strlen(line) >= sizeof(req->data) - 4) {
ast_log(LOG_WARNING, "Out of space, can't add anymore\n");
return -1;
}
- req->line[req->lines] = req->data + req->len;
- snprintf(req->line[req->lines], sizeof(req->data) - req->len, "%s", line);
- req->len += strlen(req->line[req->lines]);
- req->lines++;
- return 0;
+
+ snprintf(req->content + strlen(req->content), sizeof(req->content) - strlen(req->content), "%s", line);
+ return 0;
}
/*! \brief Copy one header field from one request to another */
@@ -6545,7 +6555,6 @@
return -1;
}
respprep(&resp, p, msg, req);
- add_header_contentLength(&resp, 0);
/* If we are cancelling an incoming invite for some reason, add information
about the reason why we are doing this in clear text */
if (p->method == SIP_INVITE && msg[0] != '1' && p->owner && p->owner->hangupcause) {
@@ -6631,7 +6640,6 @@
respprep(&resp, p, msg, req);
append_date(&resp);
add_header(&resp, "Unsupported", unsupported);
- add_header_contentLength(&resp, 0);
return send_response(p, &resp, XMIT_UNRELIABLE, 0);
}
@@ -6661,7 +6669,6 @@
struct sip_request resp;
respprep(&resp, p, msg, req);
append_date(&resp);
- add_header_contentLength(&resp, 0);
return send_response(p, &resp, XMIT_UNRELIABLE, 0);
}
@@ -6671,7 +6678,6 @@
struct sip_request resp;
respprep(&resp, p, msg, req);
add_header(&resp, "Accept", "application/sdp");
- add_header_contentLength(&resp, 0);
return send_response(p, &resp, reliable, 0);
}
@@ -6691,7 +6697,6 @@
snprintf(tmp, sizeof(tmp), "Digest algorithm=MD5, realm=\"%s\", nonce=\"%s\"%s", global_realm, randdata, stale ? ", stale=true" : "");
respprep(&resp, p, msg, req);
add_header(&resp, header, tmp);
- add_header_contentLength(&resp, 0);
append_history(p, "AuthChal", "Auth challenge sent for %s - nc %d", p->username, p->noncecount);
return send_response(p, &resp, reliable, seqno);
}
@@ -6714,8 +6719,7 @@
{
/* XXX Convert \n's to \r\n's XXX */
add_header(req, "Content-Type", "text/plain");
- add_header_contentLength(req, strlen(text));
- add_line(req, text);
+ add_content(req, text);
return 0;
}
@@ -6727,8 +6731,7 @@
snprintf(tmp, sizeof(tmp), "Signal=%c\r\nDuration=%u\r\n", digit, duration);
add_header(req, "Content-Type", "application/dtmf-relay");
- add_header_contentLength(req, strlen(tmp));
- add_line(req, tmp);
+ add_content(req, tmp);
return 0;
}
@@ -6747,8 +6750,7 @@
" </vc_primitive>\r\n"
" </media_control>\r\n";
add_header(req, "Content-Type", "application/media_control+xml");
- add_header_contentLength(req, strlen(xml_is_a_huge_waste_of_space));
- add_line(req, xml_is_a_huge_waste_of_space);
+ add_content(req, xml_is_a_huge_waste_of_space);
return 0;
}
@@ -6862,7 +6864,6 @@
/*! \brief Add Session Description Protocol message */
static enum sip_result add_sdp(struct sip_request *resp, struct sip_pvt *p, int add_audio, int add_t38)
{
- int len = 0;
int alreadysent = 0;
struct sockaddr_in sin;
@@ -7131,45 +7132,35 @@
ast_build_string(&a_modem_next, &a_modem_left, "a=T38FaxUdpEC:%s\r\n", (p->t38.jointcapability & T38FAX_UDP_EC_REDUNDANCY) ? "t38UDPRedundancy" : "t38UDPFEC");
}
- len = strlen(version) + strlen(subject) + strlen(owner) + strlen(connection) + strlen(stime);
- if (add_audio)
- len += strlen(m_audio) + strlen(a_audio) + strlen(hold);
- if (needvideo) /* only if video response is appropriate */
- len += strlen(m_video) + strlen(a_video) + strlen(bandwidth) + strlen(hold);
- if (add_t38) {
- len += strlen(m_modem) + strlen(a_modem);
- }
-
add_header(resp, "Content-Type", "application/sdp");
- add_header_contentLength(resp, len);
- add_line(resp, version);
- add_line(resp, owner);
- add_line(resp, subject);
- add_line(resp, connection);
+ add_content(resp, version);
+ add_content(resp, owner);
+ add_content(resp, subject);
+ add_content(resp, connection);
if (needvideo) /* only if video response is appropriate */
- add_line(resp, bandwidth);
- add_line(resp, stime);
+ add_content(resp, bandwidth);
+ add_content(resp, stime);
if (add_audio) {
- add_line(resp, m_audio);
- add_line(resp, a_audio);
- add_line(resp, hold);
+ add_content(resp, m_audio);
+ add_content(resp, a_audio);
+ add_content(resp, hold);
} else if (p->offered_media[SDP_AUDIO].offered) {
snprintf(dummy_answer, sizeof(dummy_answer), "m=audio 0 RTP/AVP %s\r\n", p->offered_media[SDP_AUDIO].text);
- add_line(resp, dummy_answer);
+ add_content(resp, dummy_answer);
}
if (needvideo) { /* only if video response is appropriate */
- add_line(resp, m_video);
- add_line(resp, a_video);
- add_line(resp, hold); /* Repeat hold for the video stream */
+ add_content(resp, m_video);
+ add_content(resp, a_video);
+ add_content(resp, hold); /* Repeat hold for the video stream */
} else if (p->offered_media[SDP_VIDEO].offered) {
snprintf(dummy_answer, sizeof(dummy_answer), "m=video 0 RTP/AVP %s\r\n", p->offered_media[SDP_VIDEO].text);
- add_line(resp, dummy_answer);
+ add_content(resp, dummy_answer);
}
if (add_t38) {
- add_line(resp, m_modem);
- add_line(resp, a_modem);
+ add_content(resp, m_modem);
+ add_content(resp, a_modem);
} else if (p->offered_media[SDP_IMAGE].offered) {
- add_line(resp, "m=image 0 udptl t38\r\n");
+ add_content(resp, "m=image 0 udptl t38\r\n");
}
/* Update lastrtprx when we send our SDP */
@@ -7675,8 +7666,6 @@
add_sdp(&req, p, 0, 1);
} else if (p->rtp)
add_sdp(&req, p, 1, 0);
- } else {
- add_header_contentLength(&req, 0);
}
if (!p->initreq.headers || init > 2)
@@ -7861,8 +7850,7 @@
if (t > tmp + sizeof(tmp))
ast_log(LOG_WARNING, "Buffer overflow detected!! (Please file a bug report)\n");
- add_header_contentLength(&req, strlen(tmp));
- add_line(&req, tmp);
+ add_content(&req, tmp);
p->pendinginvite = p->ocseq; /* Remember that we have a pending NOTIFY in order not to confuse the NOTIFY subsystem */
return send_request(p, &req, XMIT_RELIABLE, p->ocseq);
@@ -7911,8 +7899,7 @@
if (t > tmp + sizeof(tmp))
ast_log(LOG_WARNING, "Buffer overflow detected!! (Please file a bug report)\n");
- add_header_contentLength(&req, strlen(tmp));
- add_line(&req, tmp);
+ add_content(&req, tmp);
if (!p->initreq.headers)
initialize_initreq(p, &req);
@@ -7942,8 +7929,7 @@
add_header(&req, "Supported", SUPPORTED_EXTENSIONS);
snprintf(tmp, sizeof(tmp), "SIP/2.0 %s\r\n", message);
- add_header_contentLength(&req, strlen(tmp));
- add_line(&req, tmp);
+ add_content(&req, tmp);
if (!p->initreq.headers)
initialize_initreq(p, &req);
@@ -8249,7 +8235,6 @@
add_header(&req, "Expires", tmp);
add_header(&req, "Contact", p->our_contact);
add_header(&req, "Event", "registration");
- add_header_contentLength(&req, 0);
initialize_initreq(p, &req);
if (sip_debug_test_pvt(p))
@@ -8383,7 +8368,6 @@
p->invitestate = INV_CONFIRMED;
reqprep(&resp, p, sipmethod, seqno, newbranch);
- add_header_contentLength(&resp, 0);
return send_request(p, &resp, reliable, seqno ? seqno : p->ocseq);
}
@@ -8417,7 +8401,6 @@
add_header(&resp, "X-Asterisk-HangupCauseCode", buf);
}
- add_header_contentLength(&resp, 0);
return send_request(p, &resp, reliable, seqno ? seqno : p->ocseq);
}
@@ -12147,8 +12130,15 @@
initreqprep(&req, p, SIP_NOTIFY);
- for (var = varlist; var; var = var->next)
+ for (var = varlist; var; var = var->next) {
+ if (!strcasecmp(var->name, "Content-Length")) {
+ if (option_debug >= 2) {
+ ast_log(LOG_DEBUG, "Ignoring pair %s=%s\n", var->name, var->value);
+ }
+ continue; /* ignore content-length, it is calculated automatically */
+ }
add_header(&req, var->name, ast_unescape_semicolon(var->value));
+ }
/* Recalculate our side, and recalculate Call ID */
if (ast_sip_ouraddrfor(&p->sa.sin_addr, &p->ourip))
Modified: branches/1.4/configs/sip_notify.conf.sample
URL: http://svnview.digium.com/svn/asterisk/branches/1.4/configs/sip_notify.conf.sample?view=diff&rev=271689&r1=271688&r2=271689
==============================================================================
--- branches/1.4/configs/sip_notify.conf.sample (original)
+++ branches/1.4/configs/sip_notify.conf.sample Tue Jun 22 07:52:27 2010
@@ -1,11 +1,9 @@
[polycom-check-cfg]
Event=>check-sync
-Content-Length=>0
; Untested
[sipura-check-cfg]
Event=>resync
-Content-Length=>0
; Untested
[grandstream-check-cfg]
@@ -14,9 +12,7 @@
; Untested
[cisco-check-cfg]
Event=>check-sync
-Content-Length=>0
; Tested
[snom-check-cfg]
Event=>check-sync\;reboot=false
-Content-Length=>0
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