FreeCalypso > hg > themwi-system-sw
annotate libsip/resp_ident.c @ 243:59a166c50d0e
themwi-mncc: convert to libnumdb2
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 14 Aug 2023 19:13:26 -0800 |
parents | ff5e96162430 |
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rev | line source |
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libsip: new function for extracting Call-ID and CSeq from responses
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
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libsip: new function for extracting Call-ID and CSeq from responses
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2 * In this module we implement an essential step in the process |
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libsip: new function for extracting Call-ID and CSeq from responses
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3 * of handling incoming SIP response messages: extracting Call-ID |
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libsip: new function for extracting Call-ID and CSeq from responses
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4 * and CSeq headers and preparsing the latter, providing key info |
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libsip: new function for extracting Call-ID and CSeq from responses
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5 * for matching these incoming responses with call state and |
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libsip: new function for extracting Call-ID and CSeq from responses
Mychaela Falconia <falcon@freecalypso.org>
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6 * with outstanding UAC requests. |
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libsip: new function for extracting Call-ID and CSeq from responses
Mychaela Falconia <falcon@freecalypso.org>
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7 */ |
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Mychaela Falconia <falcon@freecalypso.org>
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8 |
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libsip: new function for extracting Call-ID and CSeq from responses
Mychaela Falconia <falcon@freecalypso.org>
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9 #include <ctype.h> |
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10 #include <string.h> |
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11 #include <strings.h> |
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12 #include <stdio.h> |
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13 #include <stdlib.h> |
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14 #include "parse.h" |
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15 #include "resp_ident.h" |
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16 |
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17 extern char *get_single_header(); |
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18 |
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19 sip_resp_extract_ident(msg, id) |
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20 struct sip_pkt_rx *msg; |
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21 struct sip_resp_ident *id; |
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22 { |
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23 char *hval, *cp; |
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24 int dup_flag = 0; |
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25 |
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26 hval = get_single_header(msg, "Call-ID", "i", &dup_flag); |
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27 if (!hval || dup_flag) { |
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28 id->error_field = "Call-ID"; |
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29 return(-1); |
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30 } |
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31 id->call_id = hval; |
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32 hval = get_single_header(msg, "CSeq", (char *) 0, &dup_flag); |
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33 if (!hval || dup_flag) { |
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34 bad_cseq: id->error_field = "CSeq"; |
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35 return(-1); |
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36 } |
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37 if (!isdigit(*hval)) |
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38 goto bad_cseq; |
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39 id->cseq_num = strtoul(hval, &cp, 10); |
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40 if (!isspace(*cp)) |
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41 goto bad_cseq; |
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42 while (isspace(*cp)) |
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43 cp++; |
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44 if (!isupper(*cp)) |
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45 goto bad_cseq; |
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46 id->cseq_method = cp; |
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47 while (isalnum(*cp)) |
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48 cp++; |
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49 if (*cp) |
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50 goto bad_cseq; |
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51 return(0); |
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52 } |