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annotate liboutrt/refresh.c @ 171:4f1f3f799295

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doc/Codec-library-depend: article written
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 21 Nov 2022 01:01:39 -0800
parents 2b03d2584f88
children
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1 /*
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2 * themwi-sip-out and possibly other similar long-running processes in
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3 * the future need to be able to pick up updates to the outbound call
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4 * routing database without being restarted. Whenever they need to
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5 * consult the route db when handling a new call setup, they will call
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6 * refresh_out_routes_db(), which does a stat on the file, followed by
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7 * a re-read if the file has changed.
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8 */
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10 #include <sys/types.h>
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11 #include <sys/stat.h>
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12 #include <sys/socket.h>
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13 #include <netinet/in.h>
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14 #include <stdio.h>
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15 #include <stdint.h>
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16 #include <stdlib.h>
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17 #include <syslog.h>
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18 #include "../include/out_routes.h"
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19
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20 extern char outrt_pathname[];
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21 extern struct stat outrt_file_stat;
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22 extern struct sip_out_dest *outrt_dest_array;
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23 extern struct inn_route *outrt_inn_array;
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24 extern struct special_num_route *outrt_spec_array;
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25
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26 refresh_out_routes_db()
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27 {
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28 int rc;
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29 struct stat st;
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30
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31 rc = stat(outrt_pathname, &st);
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32 if (rc < 0) {
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33 syslog(LOG_CRIT, "unable to stat %s for refresh: %m",
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34 outrt_pathname);
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35 return(-1);
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36 }
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37 if (st.st_mtime == outrt_file_stat.st_mtime &&
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38 st.st_ctime == outrt_file_stat.st_ctime &&
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39 st.st_size == outrt_file_stat.st_size)
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40 return(0);
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41 free(outrt_dest_array);
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42 if (outrt_inn_array) {
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43 free(outrt_inn_array);
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44 outrt_inn_array = 0;
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45 }
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46 if (outrt_spec_array) {
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47 free(outrt_spec_array);
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48 outrt_spec_array = 0;
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49 }
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50 rc = read_out_routes_db();
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51 if (rc < 0) {
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52 syslog(LOG_CRIT, "error reading %s on refresh!",
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53 outrt_pathname);
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54 exit(1);
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55 }
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56 return(1);
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57 }