How to use sofia-sip to parse sip msg? #304
Description
@briankwest ,Hi Brian:
I want to use sofia-sip to parse sip msg, if sip msg is err, return an err value. I use it like:
#include "msg/msg_internal.h"
#include <sofia-sip/msg.h>
#include <sofia-sip/nua.h>
#include <sofia-sip/sip_status.h>
#include <sofia-sip/sdp.h>
#include <sofia-sip/sip_protos.h>
#include <sofia-sip/auth_module.h>
#include <sofia-sip/su_md5.h>
#include <sofia-sip/su_log.h>
#include <sofia-sip/su_strlst.h>
#include <sofia-sip/nea.h>
#include <sofia-sip/msg_addr.h>
#include <sofia-sip/tport_tag.h>
#include <sofia-sip/sip_extra.h>
#include "sofia-sip/msg_parser.h"
#include "sofia-sip/sip_parser.h"
#include "sofia-sip/tport_tag.h"
#include <sofia-sip/uniqueid.h>
#include "sofia-sip/msg_header.h"
#include "sofia-sip/bnf.h"
#include "sofia-sip/msg_parser.h"
#include "sofia-sip/msg_mclass.h"
#include "sofia-sip/msg_mclass_hash.h"
#include "sofia-sip/msg_mime.h"
.......
#define SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST "INVITE sip:[email protected]:5060 SIP/2.0\r\n
Record-Route: sip:199.45.10.99:7098;ftag=1796780028;lr;did=13d.723d0655\r\n
Via: SIP/2.0/UDP 10.0.0.8:5090;branch=z9hG4bK96d8.1dd9f537.0\r\n
Via: SIP/2.0/UDP 0.0.0.0:64135;rport=64135;received=173.208.223.146;branch=z9hG4bK1213005543\r\n
Max-Forwards: 30\r\n
From: sip:[email protected];tag=1796780028\r\n
To: sip:[email protected]\r\n
Call-ID: 1403923132-1093036234-888019752\r\n
CSeq: 1 INVITE\r\n
Contact: sip:130703\"@173.208.223.146:64135\r\n
Content-Type: application/sdp\r\n
Content-Length: 406\r\n
Allow: ACK, BYE, CANCEL, INFO, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE, PUBLISH\r\n
User-Agent: pplsip\r\n
X-AUTH-IP: 173.208.223.146\r\n
\r\n
v=0\r\n
o=- 329918574 329919044 IN IP4 0.0.0.0\r\n
s=sipcall\r\n
c=IN IP4 0.0.0.0\r\n
t=0 0\r\n
m=audio 34068 RTP/AVP 100 6 0 8 3 18 5 101\r\n
a=alt:1 1 : DF50DC48 0000006A 0.0.0.0 7628\r\n
a=rtpmap:100 speex/16000\r\n
a=rtpmap:6 DVI4/16000\r\n
a=rtpmap:0 PCMU/8000\r\n
a=rtpmap:8 PCMA/8000\r\n
a=rtpmap:3 GSM/8000\r\n
a=rtpmap:18 G729/8000\r\n
a=rtpmap:5 DVI4/8000\r\n
a=rtpmap:101 telephone-event/8000\r\n
a=fmtp:101 0-11\r\n
a=sendonly\r\n
a=rtcp:34069\r\n"
..............
//Contact: sip:130703\"@173.208.223.146:64135 has a " in user；
int extract_res = 0;
msg_mclass_t const *_default_zwytest = sip_default_mclass();
/**** I have write this func in sofia-sip/libsofia-sip-ua/sip/sofia-sip/sip_parser.h
//add by zwy start 2025.08.08 start
// Return a built-in SIP parser object.
SOFIAPUBFUN msg_mclass_t const *sip_default_mclass(void);
//add by zwy start 2025.08.08 stop
***/
msg_err = msg_create(_default_zwytest, 2);
switch_zmalloc(msg_err->m_buffer->mb_data, strlen(SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST) + 1);
snprintf(msg_err->m_buffer->mb_data, strlen(SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST) + 1, "%s", SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST);
msg_err->m_buffer->mb_used = 0;
msg_err->m_buffer->mb_commit = strlen(SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST);
msg_err->m_buffer->mb_size = strlen(SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST) + 1;
msg_err->m_buffer->mb_eos = 1;
extract_res = msg_extract(msg_err);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST:\n%s\n", SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "extract_res:%d, msg_get_flags:%d\n", extract_res, msg_get_flags(msg_err, MSG_FLG_ERROR));
switch_safe_free(msg_err->m_buffer->mb_data);
..................
I run this codes, it comes:
===============debug logs start===================
2025-08-08 10:47:13.133395 98.17% [INFO] mod_yeastar_zwytest_parse_sip_and_check.c:200 SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST:
INVITE sip:[email protected]:5060 SIP/2.0
Record-Route: sip:199.45.10.99:7098;ftag=1796780028;lr;did=13d.723d0655
Via: SIP/2.0/UDP 10.0.0.8:5090;branch=z9hG4bK96d8.1dd9f537.0
Via: SIP/2.0/UDP 0.0.0.0:64135;rport=64135;received=173.208.223.146;branch=z9hG4bK1213005543
Max-Forwards: 30
From: sip:[email protected];tag=1796780028
To: sip:[email protected]
Call-ID: 1403923132-1093036234-888019752
Contact: sip:130703"@173.208.223.146:64135
ontent-Type: application/sdp
Content-Length: 406
Allow: ACK, BYE, CANCEL, INFO, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE, PUBLISH
User-Agent: pplsip
X-AUTH-IP: 173.208.223.146
v=0
o=- 329918574 329919044 IN IP4 0.0.0.0
s=sipcall
c=IN IP4 0.0.0.0
t=0 0
m=audio 34068 RTP/AVP 100 6 0 8 3 18 5 101
a=alt:1 1 : DF50DC48 0000006A 0.0.0.0 7628
a=rtpmap:100 speex/16000
a=rtpmap:6 DVI4/16000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:3 GSM/8000
a=rtpmap:18 G729/8000
a=rtpmap:5 DVI4/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-11
a=sendonly
a=rtcp:34069
2025-08-08 10:47:13.133395 98.17% [INFO] mod_yeastar_zwytest_parse_sip_and_check.c:201 extract_res:1, msg_get_flags:0
===============debug logs end===================
even i use an err Contact in SIP_INVITE_MSG_CONTACT_ERR_ZWYTEST, like: Contact: ceafr or Contact: $$$; msg_extract(msg_err) still return 1, msg_get_flags(msg_err, MSG_FLG_ERROR) still no error.
it let me confusion. I view the code, it seems like it can parse SIP header, if some err happended.
============ the codes in sofia-sip/libsofia-sip-ua/msg/msg_parser.c extract_header func start===========
........
hr = msg_find_hclass(mc, b, &n); /* Get header name /
error = n == 0;
if (hr == NULL) / Panic */
return -1;
xtra = span_ws(b + n);
/* Find next crlf which is not followed by whitespace /
do {
n += xtra + crlf;
if (!eos && bsiz == n)
return 0;
m = span_non_crlf(b + n);
if (!name_len_set && m)
name_len = n, name_len_set = 1; / First non-ws after COLON */
n += m;
crlf = CRLF_TEST(b + n);
xtra = span_ws(b + n + crlf);
}
while (xtra);
if (!eos && bsiz == n + crlf)
return 0;
if (hr->hr_class->hc_hash == msg_unknown_hash)
name_len = 0, name_len_set = 1;
if (error) {
msg->m_extract_err |= hr->hr_flags;
if (hr->hr_class->hc_critical)
mo->msg_flags |= MSG_FLG_ERROR;
hr = mc->mc_error;
copy_buffer = 1;
h = error_header_parse(msg, mo, hr);
}
else {
...........
============ the codes in sofia-sip/libsofia-sip-ua/msg/msg_parser.c extract_header func stop===========
How to use sofia-sip to parse sip msg, if some err in SIP Header content, or mis some SIP header must has; return an err value, and report the err SIP header line.
wish today. thks.