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Merged revisions 271689 via svnmerge from

Browse Source 
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r271689 | mnicholson | 2010-06-22 07:52:27 -0500 (Tue, 22 Jun 2010) | 8 lines
  
  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.
  
  (closes issue #17326)
  Reported by: kenner
  Tested by: mnicholson, kenner
  
  Review: https://reviewboard.asterisk.org/r/693/
........


This change also adds an ast_str_copy_string() function (similar to ast_copy_string), that copies one ast_str into another, properly handling embedded nulls.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@271690 65c4cc65-6c06-0410-ace0-fbb531ad65f3
certified/1.8.6
Matthew Nicholson 15 years ago
parent e3873889b8
commit 9bbeb945e8
3 changed files with 146 additions and 145 deletions
Show Stats Download Patch File Download Diff File

273
channels/chan_sip.c
Unescape View File

@ -1516,6 +1516,7 @@ static void *sip_tcp_worker_fn(void *);
/*--- Constructing requests and responses */
static void initialize_initreq(struct sip_pvt *p, struct sip_request *req);
static int init_req(struct sip_request *req, int sipmethod, const char *recip);
static void deinit_req(struct sip_request *req);
static int reqprep(struct sip_request *req, struct sip_pvt *p, int sipmethod, int seqno, int newbranch);
static void initreqprep(struct sip_request *req, struct sip_pvt *p, int sipmethod, const char * const explicit_uri);
static int init_resp(struct sip_request *resp, const char *msg);
@ -1530,8 +1531,8 @@ static void build_callid_pvt(struct sip_pvt *pvt);
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, int mode);
static int add_rpid(struct sip_request *req, struct sip_pvt *p);
@ -2634,14 +2635,8 @@ cleanup:
ao2_t_unlink(threadt, me, "Removing tcptls helper thread, thread is closing");
ao2_t_ref(me, -1, "Removing tcp_helper_threads threadinfo ref");
}
if (reqcpy.data) {
ast_free(reqcpy.data);
}
if (req.data) {
ast_free(req.data);
req.data = NULL;
}
deinit_req(&reqcpy);
deinit_req(&req);
/* if client, we own the parent session arguments and must decrement ref */
if (ca) {
@ -3804,6 +3799,7 @@ static int send_response(struct sip_pvt *p, struct sip_request *req, enum xmitty
{
int res;
finalize_content(req);
add_blank(req);
if (sip_debug_test_pvt(p)) {
const struct sockaddr_in *dst = sip_real_dst(p);
@ -3818,7 +3814,7 @@ static int send_response(struct sip_pvt *p, struct sip_request *req, enum xmitty
parse_copy(&tmp, req);
append_history(p, reliable ? "TxRespRel" : "TxResp", "%s / %s - %s", tmp.data->str, get_header(&tmp, "CSeq"),
(tmp.method == SIP_RESPONSE || tmp.method == SIP_UNKNOWN) ? REQ_OFFSET_TO_STR(&tmp, rlPart2) : sip_methods[tmp.method].text);
ast_free(tmp.data);
deinit_req(&tmp);
}
/* If we are sending a final response to an INVITE, stop retransmitting provisional responses */
@ -3829,8 +3825,7 @@ static int send_response(struct sip_pvt *p, struct sip_request *req, enum xmitty
res = (reliable) ?
__sip_reliable_xmit(p, seqno, 1, req->data, req->len, (reliable == XMIT_CRITICAL), req->method) :
__sip_xmit(p, req->data, req->len);
ast_free(req->data);
req->data = NULL;
deinit_req(req);
if (res > 0)
return 0;
return res;
@ -3850,6 +3845,7 @@ static int send_request(struct sip_pvt *p, struct sip_request *req, enum xmittyp
p->sa = p->outboundproxy->ip;
}
finalize_content(req);
add_blank(req);
if (sip_debug_test_pvt(p)) {
if (ast_test_flag(&p->flags[0], SIP_NAT_FORCE_RPORT))
@ -3861,15 +3857,12 @@ static int send_request(struct sip_pvt *p, struct sip_request *req, enum xmittyp
struct sip_request tmp = { .rlPart1 = 0, };
parse_copy(&tmp, req);
append_history(p, reliable ? "TxReqRel" : "TxReq", "%s / %s - %s", tmp.data->str, get_header(&tmp, "CSeq"), sip_methods[tmp.method].text);
ast_free(tmp.data);
deinit_req(&tmp);
}
res = (reliable) ?
__sip_reliable_xmit(p, seqno, 0, req->data, req->len, (reliable == XMIT_CRITICAL), req->method) :
__sip_xmit(p, req->data, req->len);
if (req->data) {
ast_free(req->data);
req->data = NULL;
}
deinit_req(req);
return res;
}
@ -5257,8 +5250,7 @@ void __sip_destroy(struct sip_pvt *p, int lockowner, int lockdialoglist)
free_old_route(p->route);
p->route = NULL;
}
if (p->initreq.data)
ast_free(p->initreq.data);
deinit_req(&p->initreq);
/* Destroy Session-Timers if allocated */
if (p->stimer) {
@ -8770,30 +8762,37 @@ static int add_header(struct sip_request *req, const char *var, const char *valu
return 0;
}
/*! \brief Add 'Content-Length' header to SIP message */
static int add_header_contentLength(struct sip_request *req, int len)
/*! \brief Add 'Content-Length' header and content to SIP message */
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", ast_str_strlen(req->content));
add_header(req, "Content-Length", clen);
if (ast_str_strlen(req->content)) {
ast_str_append(&req->data, 0, "\r\n%s", ast_str_buffer(req->content));
req->len = ast_str_strlen(req->data);
}
req->lines = ast_str_strlen(req->content) ? 1 : 0;
return 0;
}
/*! \brief Add content (not header) to SIP message */
static int add_line(struct sip_request *req, const char *line)
static int add_content(struct sip_request *req, const char *line)
{
if (req->lines == SIP_MAX_LINES) {
ast_log(LOG_WARNING, "Out of SIP line space\n");
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 */
req->len += ast_str_append(&req->data, 0, "\r\n");
req->line[req->lines] = req->len;
ast_str_append(&req->data, 0, "%s", line);
req->len = ast_str_strlen(req->data);
req->lines++;
return 0;
ast_str_append(&req->content, 0, "%s", line);
return 0;
}
/*! \brief Copy one header field from one request to another */
@ -9005,12 +9004,20 @@ static int init_resp(struct sip_request *resp, const char *msg)
memset(resp, 0, sizeof(*resp));
resp->method = SIP_RESPONSE;
if (!(resp->data = ast_str_create(SIP_MIN_PACKET)))
return -1;
goto e_return;
if (!(resp->content = ast_str_create(SIP_MIN_PACKET)))
goto e_free_data;
resp->header[0] = 0;
ast_str_set(&resp->data, 0, "SIP/2.0 %s\r\n", msg);
resp->len = resp->data->used;
resp->headers++;
return 0;
e_free_data:
ast_free(resp->data);
resp->data = NULL;
e_return:
return -1;
}
/*! \brief Initialize SIP request */
@ -9019,15 +9026,37 @@ static int init_req(struct sip_request *req, int sipmethod, const char *recip)
/* Initialize a request */
memset(req, 0, sizeof(*req));
if (!(req->data = ast_str_create(SIP_MIN_PACKET)))
return -1;
goto e_return;
if (!(req->content = ast_str_create(SIP_MIN_PACKET)))
goto e_free_data;
req->method = sipmethod;
req->header[0] = 0;
ast_str_set(&req->data, 0, "%s %s SIP/2.0\r\n", sip_methods[sipmethod].text, recip);
req->len = ast_str_strlen(req->data);
req->headers++;
return 0;
e_free_data:
ast_free(req->data);
req->data = NULL;
e_return:
return -1;
}
/*! \brief Deinitialize SIP response/request */
static void deinit_req(struct sip_request *req)
{
if (req->data) {
ast_free(req->data);
req->data = NULL;
}
if (req->content) {
ast_free(req->content);
req->content = NULL;
}
}
/*! \brief Test if this response needs a contact header */
static inline int resp_needs_contact(const char *msg, enum sipmethod method) {
/* Requirements for Contact header inclusion in responses generated
@ -9309,7 +9338,6 @@ static int __transmit_response(struct sip_pvt *p, const char *msg, const struct
add_cc_call_info_to_response(p, &resp);
}
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') {
@ -9439,7 +9467,6 @@ static int transmit_response_with_unsupported(struct sip_pvt *p, const char *msg
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);
}
@ -9454,8 +9481,6 @@ static int transmit_response_with_minse(struct sip_pvt *p, const char *msg, cons
snprintf(minse_str, sizeof(minse_str), "%d", minse_int);
add_header(&resp, "Min-SE", minse_str);
add_header_contentLength(&resp, 0);
return send_response(p, &resp, XMIT_UNRELIABLE, 0);
}
@ -9486,7 +9511,6 @@ static int transmit_response_with_date(struct sip_pvt *p, const char *msg, const
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);
}
@ -9496,7 +9520,6 @@ static int transmit_response_with_allow(struct sip_pvt *p, const char *msg, cons
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);
}
@ -9519,7 +9542,6 @@ static int transmit_response_with_auth(struct sip_pvt *p, const char *msg, const
snprintf(tmp, sizeof(tmp), "Digest algorithm=MD5, realm=\"%s\", nonce=\"%s\"%s", p->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);
}
@ -9616,8 +9638,7 @@ static int add_text(struct sip_request *req, const char *text)
{
/* XXX Convert \n's to \r\n's XXX */
add_header(req, "Content-Type", "text/plain;charset=UTF-8");
add_header_contentLength(req, strlen(text));
add_line(req, text);
add_content(req, text);
return 0;
}
@ -9641,14 +9662,12 @@ static int add_digit(struct sip_request *req, char digit, unsigned int duration,
event = atoi(&digit);
snprintf(tmp, sizeof(tmp), "%d\r\n", event);
add_header(req, "Content-Type", "application/dtmf");
add_header_contentLength(req, strlen(tmp));
add_line(req, tmp);
add_content(req, tmp);
} else {
/* Application/dtmf-relay as documented by Cisco */
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;
}
@ -9754,8 +9773,7 @@ static int add_vidupdate(struct sip_request *req)
" </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;
}
@ -10023,7 +10041,6 @@ static void get_crypto_attrib(struct sip_srtp *srtp, const char **a_crypto)
*/
static enum sip_result add_sdp(struct sip_request *resp, struct sip_pvt *p, int oldsdp, int add_audio, int add_t38)
{
int len = 0;
format_t alreadysent = 0;
struct sockaddr_in sin = { 0, };
@ -10320,72 +10337,52 @@ static enum sip_result add_sdp(struct sip_request *resp, struct sip_pvt *p, int
if (needtext)
ast_str_append(&m_text, 0, "\r\n");
len = strlen(version) + strlen(subject) + strlen(owner) +
strlen(connection) + strlen(session_time);
if (needaudio)
len += m_audio->used + a_audio->used + strlen(hold);
if (needvideo) /* only if video response is appropriate */
len += m_video->used + a_video->used + strlen(bandwidth) + strlen(hold);
if (needtext) /* only if text response is appropriate */
len += m_text->used + a_text->used + strlen(hold);
if (add_t38)
len += m_modem->used + a_modem->used;
if (a_crypto) {
len += strlen(a_crypto);
}
if (v_a_crypto) {
len += strlen(v_a_crypto);
}
if (t_a_crypto) {
len += strlen(t_a_crypto);
}
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, session_time);
add_content(resp, bandwidth);
add_content(resp, session_time);
if (needaudio) {
add_line(resp, m_audio->str);
add_line(resp, a_audio->str);
add_line(resp, hold);
add_content(resp, m_audio->str);
add_content(resp, a_audio->str);
add_content(resp, hold);
if (a_crypto) {
add_line(resp, a_crypto);
add_content(resp, a_crypto);
}
} 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].codecs);
add_line(resp, dummy_answer);
add_content(resp, dummy_answer);
}
if (needvideo) { /* only if video response is appropriate */
add_line(resp, m_video->str);
add_line(resp, a_video->str);
add_line(resp, hold); /* Repeat hold for the video stream */
add_content(resp, m_video->str);
add_content(resp, a_video->str);
add_content(resp, hold); /* Repeat hold for the video stream */
if (v_a_crypto) {
add_line(resp, v_a_crypto);
add_content(resp, v_a_crypto);
}
} 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].codecs);
add_line(resp, dummy_answer);
add_content(resp, dummy_answer);
}
if (needtext) { /* only if text response is appropriate */
add_line(resp, m_text->str);
add_line(resp, a_text->str);
add_line(resp, hold); /* Repeat hold for the text stream */
add_content(resp, m_text->str);
add_content(resp, a_text->str);
add_content(resp, hold); /* Repeat hold for the text stream */
if (t_a_crypto) {
add_line(resp, t_a_crypto);
add_content(resp, t_a_crypto);
}
} else if (p->offered_media[SDP_TEXT].offered) {
snprintf(dummy_answer, sizeof(dummy_answer), "m=text 0 RTP/AVP %s\r\n", p->offered_media[SDP_TEXT].codecs);
add_line(resp, dummy_answer);
add_content(resp, dummy_answer);
}
if (add_t38) {
add_line(resp, m_modem->str);
add_line(resp, a_modem->str);
add_content(resp, m_modem->str);
add_content(resp, a_modem->str);
} 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 */
@ -10419,25 +10416,29 @@ static int transmit_response_with_t38_sdp(struct sip_pvt *p, char *msg, struct s
/*! \brief copy SIP request (mostly used to save request for responses) */
static void copy_request(struct sip_request *dst, const struct sip_request *src)
{
/* XXX this function can encounter memory allocation errors, perhaps it
* should return a value */
struct ast_str *duplicate = dst->data;
struct ast_str *duplicate_content = dst->content;
/* First copy stuff */
/* copy the entire request then restore the original data and content
* members from the dst request */
memcpy(dst, src, sizeof(*dst));
dst->data = duplicate;
dst->content = duplicate_content;
/* All these + 1's are to account for the need to include the NULL terminator
* Using typical string functions like ast_copy_string or ast_str_set will not
* work in this case because the src's data string is riddled with \0's all over
* the place and so a memcpy is the only way to accurately copy the string
*/
if (!dst->data && !(dst->data = ast_str_create(src->data->used + 1)))
/* copy the data into the dst request */
if (!dst->data && !(dst->data = ast_str_create(ast_str_strlen(src->data) + 1)))
return;
else if (dst->data->len < src->data->used + 1)
ast_str_make_space(&dst->data, src->data->used + 1);
memcpy(dst->data->str, src->data->str, src->data->used + 1);
dst->data->used = src->data->used;
ast_str_copy_string(&dst->data, src->data);
/* copy the content into the dst request (if it exists) */
if (src->content) {
if (!dst->content && !(dst->content = ast_str_create(ast_str_strlen(src->content) + 1)))
return;
ast_str_copy_string(&dst->content, src->content);
}
}
static void add_cc_call_info_to_response(struct sip_pvt *p, struct sip_request *resp)
@ -11015,9 +11016,8 @@ static int transmit_invite(struct sip_pvt *p, int sipmethod, int sdp, int init,
} else if (p->notify) {
for (var = p->notify->headers; var; var = var->next)
add_header(&req, var->name, var->value);
add_header_contentLength(&req, ast_str_strlen(p->notify->content));
if (ast_str_strlen(p->notify->content))
add_line(&req, ast_str_buffer(p->notify->content));
add_content(&req, ast_str_buffer(p->notify->content));
} else if (sipmethod == SIP_PUBLISH) {
char expires[SIPBUFSIZE];
switch (p->epa_entry->static_data->event) {
@ -11030,17 +11030,12 @@ static int transmit_invite(struct sip_pvt *p, int sipmethod, int sdp, int init,
}
if (!ast_strlen_zero(p->epa_entry->body)) {
add_header(&req, "Content-Type", "application/pidf+xml");
add_header_contentLength(&req, strlen(p->epa_entry->body));
add_line(&req, p->epa_entry->body);
} else {
add_header_contentLength(&req, 0);
add_content(&req, p->epa_entry->body);
}
default:
break;
}
} else {
add_header_contentLength(&req, 0);
}
}
if (!p->initreq.headers || init > 2)
initialize_initreq(p, &req);
@ -11339,11 +11334,9 @@ static int transmit_cc_notify(struct ast_cc_agent *agent, struct sip_pvt *subscr
generate_uri(subscription, agent_pvt->notify_uri, sizeof(agent_pvt->notify_uri));
snprintf(uri, sizeof(uri) - 1, "cc-URI: %s\r\n", agent_pvt->notify_uri);
}
add_header_contentLength(&req, strlen(state_str) +
(state == CC_READY ? strlen(uri) : 0));
add_line(&req, state_str);
add_content(&req, state_str);
if (state == CC_READY) {
add_line(&req, uri);
add_content(&req, uri);
}
return send_request(subscription, &req, XMIT_RELIABLE, subscription->ocseq);
}
@ -11425,8 +11418,7 @@ static int transmit_state_notify(struct sip_pvt *p, int state, int full, int tim
break;
}
add_header_contentLength(&req, tmp->used);
add_line(&req, tmp->str);
add_content(&req, tmp->str);
p->pendinginvite = p->ocseq; /* Remember that we have a pending NOTIFY in order not to confuse the NOTIFY subsystem */
@ -11479,8 +11471,7 @@ static int transmit_notify_with_mwi(struct sip_pvt *p, int newmsgs, int oldmsgs,
add_header(&req, "Subscription-State", "terminated;reason=timeout");
}
add_header_contentLength(&req, out->used);
add_line(&req, out->str);
add_content(&req, out->str);
if (!p->initreq.headers)
initialize_initreq(p, &req);
@ -11502,8 +11493,7 @@ static int transmit_notify_with_sipfrag(struct sip_pvt *p, int cseq, char *messa
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);
@ -11552,6 +11542,8 @@ static int manager_sipnotify(struct mansession *s, const struct message *m)
if (ast_str_strlen(p->notify->content))
ast_str_append(&p->notify->content, 0, "\r\n");
ast_str_append(&p->notify->content, 0, "%s", var->value);
} else if (!strcasecmp(var->name, "Content-Length")) {
ast_log(LOG_WARNING, "it is not necessary to specify Content-Length, ignoring");
} else {
header->next = ast_variable_new(var->name, var->value, "");
header = header->next;
@ -11613,7 +11605,6 @@ static void update_connectedline(struct sip_pvt *p, const void *data, size_t dat
reqprep(&req, p, SIP_UPDATE, 0, 1);
add_rpid(&req, p);
add_header(&req, "X-Asterisk-rpid-update", "Yes");
add_header_contentLength(&req, 0);
send_request(p, &req, XMIT_CRITICAL, p->ocseq);
} else {
/* We cannot send the update yet, so we have to wait until we can */
@ -11971,7 +11962,6 @@ static int transmit_register(struct sip_registry *r, int sipmethod, const char *
snprintf(tmp, sizeof(tmp), "%d", r->expiry);
add_header(&req, "Expires", tmp);
add_header(&req, "Contact", p->our_contact);
add_header_contentLength(&req, 0);
initialize_initreq(p, &req);
if (sip_debug_test_pvt(p)) {
@ -12172,7 +12162,6 @@ static int transmit_request(struct sip_pvt *p, int sipmethod, int seqno, enum xm
if (sipmethod == SIP_CANCEL && p->answered_elsewhere)
add_header(&resp, "Reason", "SIP;cause=200;text=\"Call completed elsewhere\"");
add_header_contentLength(&resp, 0);
return send_request(p, &resp, reliable, seqno ? seqno : p->ocseq);
}
@ -12224,7 +12213,6 @@ static int transmit_request_with_auth(struct sip_pvt *p, int sipmethod, int seqn
add_header(&resp, "X-Asterisk-HangupCauseCode", buf);
}
add_header_contentLength(&resp, 0);
return send_request(p, &resp, reliable, seqno ? seqno : p->ocseq);
}
@ -17295,6 +17283,8 @@ static char *sip_cli_notify(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
if (ast_str_strlen(p->notify->content))
ast_str_append(&p->notify->content, 0, "\r\n");
ast_str_append(&p->notify->content, 0, "%s", buf);
} else if (!strcasecmp(var->name, "Content-Length")) {
ast_log(LOG_WARNING, "it is not necessary to specify Content-Length in sip_notify.conf, ignoring");
} else {
header->next = ast_variable_new(var->name, buf, "");
header = header->next;
@ -19431,8 +19421,7 @@ static void *sip_park_thread(void *stuff)
if (!transferee || !transferer) {
ast_log(LOG_ERROR, "Missing channels for parking! Transferer %s Transferee %s\n", transferer ? "<available>" : "<missing>", transferee ? "<available>" : "<missing>" );
if (d->req.data)
ast_free(d->req.data);
deinit_req(&d->req);
free(d);
return NULL;
}
@ -19441,8 +19430,7 @@ static void *sip_park_thread(void *stuff)
if (ast_do_masquerade(transferee)) {
ast_log(LOG_WARNING, "Masquerade failed.\n");
transmit_response(transferer->tech_pvt, "503 Internal error", &req);
if (d->req.data)
ast_free(d->req.data);
deinit_req(&d->req);
free(d);
return NULL;
}
@ -19476,8 +19464,7 @@ static void *sip_park_thread(void *stuff)
ast_debug(1, "SIP Call parked failed \n");
/* Do not hangup call */
}
if (d->req.data)
ast_free(d->req.data);
deinit_req(&d->req);
free(d);
return NULL;
}
@ -19568,8 +19555,7 @@ static int sip_park(struct ast_channel *chan1, struct ast_channel *chan2, struct
d->seqno = seqno;
if (ast_pthread_create_detached_background(&th, NULL, sip_park_thread, d) < 0) {
/* Could not start thread */
if (d->req.data)
ast_free(d->req.data);
deinit_req(&d->req);
ast_free(d); /* We don't need it anymore. If thread is created, d will be free'd
by sip_park_thread() */
return 0;
@ -23347,10 +23333,7 @@ static int sipsock_read(int *id, int fd, short events, void *ignore)
req.socket.port = bindaddr.sin_port;
handle_request_do(&req, &sin);
if (req.data) {
ast_free(req.data);
req.data = NULL;
}
deinit_req(&req);
return 1;
}

1
channels/sip/include/sip.h
Unescape View File

@ -742,6 +742,7 @@ struct sip_request {
ptrdiff_t header[SIP_MAX_HEADERS]; /*!< Array of offsets into the request string of each SIP header*/
ptrdiff_t line[SIP_MAX_LINES]; /*!< Array of offsets into the request string of each SDP line*/
struct ast_str *data;
struct ast_str *content;
/* XXX Do we need to unref socket.ser when the request goes away? */
struct sip_socket socket; /*!< The socket used for this request */
AST_LIST_ENTRY(sip_request) next;

17
include/asterisk/strings.h
Unescape View File

@ -582,6 +582,23 @@ int ast_str_make_space(struct ast_str **buf, size_t new_len),
)
#endif
AST_INLINE_API(
int ast_str_copy_string(struct ast_str **dst, struct ast_str *src),
{
/* make sure our destination is large enough */
if (src->__AST_STR_USED + 1 > (*dst)->__AST_STR_LEN) {
if (ast_str_make_space(dst, src->__AST_STR_USED + 1)) {
return -1;
}
}
memcpy((*dst)->__AST_STR_STR, src->__AST_STR_STR, src->__AST_STR_USED + 1);
(*dst)->__AST_STR_USED = src->__AST_STR_USED;
return 0;
}
)
#define ast_str_alloca(init_len) \
({ \
struct ast_str *__ast_str_buf; \

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