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Use strncat() instead of an sprintf() in which source and target buffers overlap

Browse Source 
http://lists.digium.com/pipermail/asterisk-dev/2008-December/035919.html


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@166772 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2008-12-28 15:13:48 +00:00
parent 5dd486be22
commit d4ac0f7651
1 changed files with 3 additions and 2 deletions
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5
channels/misdn_config.c
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@@ -794,8 +794,9 @@ void misdn_cfg_get_config_string (int port, enum misdn_cfg_elements elem, char*
else else
iter = port_cfg[0][place].ml; iter = port_cfg[0][place].ml;
if (iter) { if (iter) {
for (; iter; iter = iter->next) for (; iter; iter = iter->next) {
sprintf(tempbuf, "%s%s, ", tempbuf, iter->msn); strncat(tempbuf, iter->msn, sizeof(tempbuf) - strlen(tempbuf) - 1);
}
tempbuf[strlen(tempbuf)-2] = 0; tempbuf[strlen(tempbuf)-2] = 0;
} }
snprintf(buf, bufsize, " -> msns: %s", *tempbuf ? tempbuf : "none"); snprintf(buf, bufsize, " -> msns: %s", *tempbuf ? tempbuf : "none");