FreeCalypso > hg > themwi-system-sw

annotate libsip/uri_utils.c @ 124:7e04d28fae8b

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sip-in: default use-100rel to no BulkVS servers act badly when we send a reliable 180 Ringing response to an incoming call, even though they advertise 100rel support in the Supported header in the INVITE packet, and we probably won't be implementing 100rel for outbound because doing per-the-spec PRACK as a UAC is just too burdensome. Therefore, we need to consider 100rel extension as not-really-supported in themwi-system-sw.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 01 Oct 2022 15:54:50 -0800
parents 5427b26525cd
children
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5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * Some utility functions for working with SIP URIs.
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3 */
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4
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5 #include <string.h>
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6 #include <strings.h>
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7
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8 user_from_sip_uri(uri, outbuf, maxlen)
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9 char *uri, *outbuf;
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10 unsigned maxlen;
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11 {
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12 char *cp, *dp;
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13 unsigned n;
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14
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15 if (strncasecmp(uri, "sip:", 4))
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16 return(-1);
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17 cp = uri + 4;
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18 dp = outbuf;
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19 n = 0;
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20 for (;;) {
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21 if (!*cp)
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22 return(-1);
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23 if (*cp == '@')
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24 break;
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25 if (n >= maxlen)
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26 return(-2);
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27 *dp++ = *cp++;
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28 n++;
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29 }
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30 *dp = '\0';
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31 return(0);
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32 }