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Fix hostname guessing to work when some stupid DNS server resolves 0.0.0.0 

Also, fix names containing a @ to work right
This commit is contained in:
Andrew Thompson 2010-08-29 10:59:10 -04:00
parent 04b9b3e2a6
commit 08d6b4339c
1 changed files with 12 additions and 5 deletions
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17
src/mod/event_handlers/mod_erlang_event/ei_helpers.c
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@ -327,6 +327,8 @@ switch_status_t initialise_ei(struct ei_cnode_s *ec)
struct hostent *nodehost;
char thishostname[EI_MAXHOSTNAMELEN + 1] = "";
char thisnodename[MAXNODELEN + 1];
char thisalivename[MAXNODELEN + 1];
char *atsign;
/* zero out the struct before we use it */
memset(&server_addr, 0, sizeof(server_addr));
@ -345,18 +347,23 @@ switch_status_t initialise_ei(struct ei_cnode_s *ec)
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(prefs.port);
if (strchr(prefs.nodename, '@')) {
/* copy the prefs.nodename into something we can modify */
strncpy(thisalivename, prefs.nodename, MAXNODELEN);
if ((atsign = strchr(thisalivename, '@'))) {
/* we got a qualified node name, don't guess the host/domain */
snprintf(thisnodename, MAXNODELEN + 1, "%s", prefs.nodename);
/* truncate the alivename at the @ */
*atsign = '\0';
} else {
#ifdef WIN32
if ((nodehost = gethostbyaddr((const char *) &server_addr.sin_addr.s_addr, sizeof(server_addr.sin_addr.s_addr), AF_INET)))
#else
if ((nodehost = gethostbyaddr((const char *) &server_addr.sin_addr.s_addr, sizeof(server_addr.sin_addr.s_addr), AF_INET)))
if ((nodehost = gethostbyaddr((const char *) &server_addr.sin_addr.s_addr, sizeof(server_addr.sin_addr.s_addr), AF_INET)))
#endif
memcpy(thishostname, nodehost->h_name, EI_MAXHOSTNAMELEN);
memcpy(thishostname, nodehost->h_name, EI_MAXHOSTNAMELEN);
if (zstr_buf(thishostname)) {
if (zstr_buf(thishostname) || !strncasecmp(prefs.ip, "0.0.0.0", 7)) {
gethostname(thishostname, EI_MAXHOSTNAMELEN);
}
@ -380,7 +387,7 @@ switch_status_t initialise_ei(struct ei_cnode_s *ec)
/* init the ei stuff */
if (ei_connect_xinit(ec, thishostname, prefs.nodename, thisnodename, (Erl_IpAddr) (&server_addr.sin_addr.s_addr), prefs.cookie, 0) < 0) {
if (ei_connect_xinit(ec, thishostname, thisalivename, thisnodename, (Erl_IpAddr) (&server_addr.sin_addr.s_addr), prefs.cookie, 0) < 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to init ei connection\n");
return SWITCH_STATUS_FALSE;
}