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comparison libsip/get_header.c @ 46:5427b26525cd

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libsip: beginning to flesh out
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 06 Sep 2022 20:29:44 -0800
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45:f1cf80c7e243 46:5427b26525cd
1 /*
2 * In this module we implement functions for retrieving individual
3 * header fields from struct sip_pkt_rx.
4 */
5
6 #include <string.h>
7 #include <strings.h>
8 #include "parse.h"
9
10 char *
11 get_single_header(msg, name, altname, dupp)
12 struct sip_pkt_rx *msg;
13 char *name, *altname;
14 int *dupp;
15 {
16 unsigned n;
17 char *ret;
18
19 for (n = 0; n < msg->num_hdr_fields; n++) {
20 if (!strcasecmp(msg->hdr_fields[n].field_name, name))
21 break;
22 if (altname &&
23 !strcasecmp(msg->hdr_fields[n].field_name, altname))
24 break;
25 }
26 if (n >= msg->num_hdr_fields)
27 return 0;
28 ret = msg->hdr_fields[n].field_value;
29 if (!dupp)
30 return ret;
31 for (n++; n < msg->num_hdr_fields; n++) {
32 if (!strcasecmp(msg->hdr_fields[n].field_name, name))
33 *dupp = 1;
34 if (altname &&
35 !strcasecmp(msg->hdr_fields[n].field_name, altname))
36 *dupp = 1;
37 }
38 return ret;
39 }