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annotate libsip/out_msg.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
parents
children 915f0f397fb6
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46
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * Functions for constructing outgoing SIP messages.
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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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4
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5 #include <stdio.h>
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6 #include <string.h>
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7 #include <strings.h>
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8
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9 #include "out_msg.h"
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10
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11 start_request_out_msg(msg, method, uri)
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12 struct sip_msg_out *msg;
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13 char *method, *uri;
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14 {
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15 unsigned len;
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16
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17 len = strlen(method) + strlen(uri) + (2 + 7 + 2);
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18 if (len + 2 > MAX_SIP_TX_PACKET)
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Mychaela Falconia <falcon@freecalypso.org>
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19 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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20 sprintf(msg->buf, "%s %s SIP/2.0\r\n", method, uri);
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Mychaela Falconia <falcon@freecalypso.org>
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21 msg->msg_len = len;
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Mychaela Falconia <falcon@freecalypso.org>
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22 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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23 }
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24
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25 start_response_out_msg(msg, status)
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26 struct sip_msg_out *msg;
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27 char *status;
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28 {
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29 unsigned len;
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30
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31 len = strlen(status) + (8 + 2);
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32 if (len + 2 > MAX_SIP_TX_PACKET)
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Mychaela Falconia <falcon@freecalypso.org>
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33 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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34 sprintf(msg->buf, "SIP/2.0 %s\r\n", status);
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35 msg->msg_len = len;
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Mychaela Falconia <falcon@freecalypso.org>
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36 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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37 }
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38
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39 out_msg_add_header(msg, name, value)
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40 struct sip_msg_out *msg;
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41 char *name, *value;
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42 {
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43 unsigned len;
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44
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45 len = strlen(name) + strlen(value) + 4;
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46 if (msg->msg_len + len + 2 > MAX_SIP_TX_PACKET)
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Mychaela Falconia <falcon@freecalypso.org>
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47 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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48 sprintf(msg->buf + msg->msg_len, "%s: %s\r\n", name, value);
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49 msg->msg_len += len;
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Mychaela Falconia <falcon@freecalypso.org>
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50 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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51 }
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52
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53 out_msg_finish(msg)
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54 struct sip_msg_out *msg;
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Mychaela Falconia <falcon@freecalypso.org>
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55 {
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56 msg->buf[msg->msg_len++] = '\r';
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57 msg->buf[msg->msg_len++] = '\n';
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58 return(0);
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59 }
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60
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61 out_msg_finish_body(msg, body, bodylen)
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62 struct sip_msg_out *msg;
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63 char *body;
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64 unsigned bodylen;
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65 {
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66 msg->buf[msg->msg_len++] = '\r';
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67 msg->buf[msg->msg_len++] = '\n';
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68 if (msg->msg_len + bodylen > MAX_SIP_TX_PACKET)
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69 return(-1);
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70 bcopy(body, msg->buf + msg->msg_len, bodylen);
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71 msg->msg_len += bodylen;
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72 return(0);
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73 }