/src/opensips/parser/parse_diversion.c
Line | Count | Source |
1 | | /* |
2 | | * Copyright (C) 2001-2003 FhG Fokus |
3 | | * |
4 | | * This file is part of opensips, a free SIP server. |
5 | | * |
6 | | * opensips is free software; you can redistribute it and/or modify |
7 | | * it under the terms of the GNU General Public License as published by |
8 | | * the Free Software Foundation; either version 2 of the License, or |
9 | | * (at your option) any later version |
10 | | * |
11 | | * opensips is distributed in the hope that it will be useful, |
12 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | * GNU General Public License for more details. |
15 | | * |
16 | | * You should have received a copy of the GNU General Public License |
17 | | * along with this program; if not, write to the Free Software |
18 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | | */ |
20 | | |
21 | | #include <stdlib.h> |
22 | | #include <string.h> |
23 | | #include "../dprint.h" |
24 | | #include "../ut.h" |
25 | | #include "../mem/mem.h" |
26 | | #include "parse_from.h" |
27 | | #include "parse_to.h" |
28 | | #include "msg_parser.h" |
29 | | |
30 | | /* |
31 | | * This method is used to parse DIVERSION header as per RFC5806 |
32 | | * (Diversion Indication in SIP) |
33 | | * |
34 | | * params: msg : sip msg |
35 | | * returns 0 on success, |
36 | | * -1 on failure. |
37 | | */ |
38 | | int parse_diversion_header(struct sip_msg *msg) |
39 | 36.2k | { |
40 | 36.2k | struct to_body* diversion_b; |
41 | | |
42 | 36.2k | if (!msg->diversion && (parse_headers(msg, HDR_DIVERSION_F, 0) == -1 || |
43 | 35.0k | !msg->diversion)) { |
44 | 35.0k | goto error; |
45 | 35.0k | } |
46 | | |
47 | | /* maybe the header is already parsed! */ |
48 | 1.19k | if (msg->diversion->parsed) |
49 | 524 | return 0; |
50 | | |
51 | | /* bad luck! :-( - we have to parse it */ |
52 | | /* first, get some memory */ |
53 | 674 | diversion_b = pkg_malloc(sizeof(struct to_body)); |
54 | 674 | if (diversion_b == 0) { |
55 | 0 | LM_ERR("out of pkg_memory\n"); |
56 | 0 | goto error; |
57 | 0 | } |
58 | | |
59 | | /* now parse it!! */ |
60 | 674 | parse_multi_to(msg->diversion->body.s, |
61 | 674 | msg->diversion->body.s + msg->diversion->body.len + 1, diversion_b); |
62 | 674 | if (diversion_b->error == PARSE_ERROR) { |
63 | 543 | LM_ERR("bad diversion header\n"); |
64 | 543 | pkg_free(diversion_b); |
65 | 543 | goto error; |
66 | 543 | } |
67 | 131 | msg->diversion->parsed = diversion_b; |
68 | | |
69 | 131 | return 0; |
70 | 35.5k | error: |
71 | 35.5k | return -1; |
72 | 674 | } |
73 | | |
74 | | |
75 | | /* |
76 | | * Get value of given diversion parameter |
77 | | */ |
78 | | str *diversion_param(struct sip_msg *msg, str name) |
79 | 262 | { |
80 | 262 | struct to_param *params; |
81 | | |
82 | 262 | if (parse_diversion_header(msg) == -1) { |
83 | 0 | LM_ERR("could not get diversion parameter\n"); |
84 | 0 | return 0; |
85 | 0 | } |
86 | | |
87 | 262 | params = ((struct to_body*)(msg->diversion->parsed))->param_lst; |
88 | | |
89 | 2.13k | while (params) { |
90 | 1.88k | if ((params->name.len == name.len) && |
91 | 544 | (strncmp(params->name.s, name.s, name.len) == 0)) { |
92 | 8 | return &(params->value); |
93 | 8 | } |
94 | 1.87k | params = params->next; |
95 | 1.87k | } |
96 | | |
97 | 254 | return 0; |
98 | 262 | } |