1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/*
* $Id: parse_cseq.c,v 1.3 2005/07/14 18:00:41 bogdan_iancu Exp $
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of openser, a free SIP server.
*
* openser is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* openser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History:
* --------
* 2003-02-28 scratchpad compatibility abandoned (jiri)
* 2003-01-22 zero-termination in CSeq eliminated (jiri)
*/
#include "parse_cseq.h"
#include "parser_f.h" /* eat_space_end and so on */
#include "../dprint.h"
#include "parse_def.h"
#include "parse_methods.h"
#include "../mem/mem.h"
/*
* Parse CSeq header field
*/
/*BUGGY*/
char* parse_cseq(char *buf, char* end, struct cseq_body* cb)
{
char *t, *m, *m_end;
cb->error=PARSE_ERROR;
t=buf;
cb->number.s=t;
t=eat_token_end(t, end);
if (t>=end) goto error;
cb->number.len=t-cb->number.s;
m=eat_space_end(t, end);
m_end=eat_token_end(m, end);
if (m_end>=end) {
LOG(L_ERR, "ERROR: parse_cseq: "
"method terminated unexpectedly\n");
goto error;
}
if (m_end==m){
/* null method*/
LOG(L_ERR, "ERROR:parse_cseq: no method found\n");
goto error;
}
cb->method.s=m;
t=m_end;
cb->method.len=t-cb->method.s;
/* cache the method id */
if(parse_method(cb->method.s, t, (unsigned int*)&cb->method_id)==0)
{
LOG(L_ERR, "ERROR: parse_cseq: cannot parse the method\n");
goto error;
}
/* there may be trailing LWS
* (it was not my idea to put it in SIP; -jiri )
*/
t=eat_lws_end(t, end);
/*check if the header ends here*/
if (t>=end) {
LOG(L_ERR, "ERROR: parse_cseq: strange EoHF\n");
goto error;
}
if (*t=='\r' && t+1<end && *(t+1)=='\n') {
cb->error=PARSE_OK;
return t+2;
}
if (*t=='\n') {
cb->error=PARSE_OK;
return t+1;
}
LOG(L_ERR, "ERROR: CSeq EoL expected\n");
error:
LOG(L_ERR, "ERROR: parse_cseq: bad cseq\n");
return t;
}
void free_cseq(struct cseq_body* cb)
{
pkg_free(cb);
}
|
