Ensure that passed in zt_chan_conf structure is not modified in mkintf.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@117582 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index b0b815e5a65f8fb917c4b95ec8e3e67b4baa02eb..024fb138fa19f068e3132591101f4a443e2d34bf 100644 (file)
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -7149,7 +7149,7 @@ static int pri_create_spanmap(int span, int trunkgroup, int logicalspan)
 
 #endif
 
-static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_pri *pri, int reloading)
+static struct zt_pvt *mkintf(int channel, const struct zt_chan_conf *conf, struct zt_pri *pri, int reloading)
 {
        /* Make a zt_pvt structure for this interface (or CRV if "pri" is specified) */
        struct zt_pvt *tmp = NULL, *tmp2,  *prev = NULL;
@@ -7207,6 +7207,7 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_p
        }
 
        if (tmp) {
+               int chan_sig = conf->chan.sig;
                if (!here) {
                        if ((channel != CHAN_PSEUDO) && !pri) {
                                snprintf(fn, sizeof(fn), "%d", channel);
@@ -7236,8 +7237,8 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_p
                                span = p.spanno - 1;
                        } else {
                                if (channel == CHAN_PSEUDO)
-                                       conf->chan.sig = 0;
-                               else if ((conf->chan.sig != SIG_FXOKS) && (conf->chan.sig != SIG_FXSKS)) {
+                                       chan_sig = 0;
+                               else if ((chan_sig != SIG_FXOKS) && (chan_sig != SIG_FXSKS)) {
                                        ast_log(LOG_ERROR, "CRV's must use FXO/FXS Kewl Start (fxo_ks/fxs_ks) signalling only.\n");
                                        return NULL;
                                }
@@ -7363,23 +7364,35 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_p
                        }
 #endif
                } else {
-                       conf->chan.sig = tmp->sig;
-                       conf->chan.radio = tmp->radio;
+                       chan_sig = tmp->sig;
                        memset(&p, 0, sizeof(p));
                        if (tmp->subs[SUB_REAL].zfd > -1)
                                res = ioctl(tmp->subs[SUB_REAL].zfd, ZT_GET_PARAMS, &p);
                }
                /* Adjust starttime on loopstart and kewlstart trunks to reasonable values */
-               if ((conf->chan.sig == SIG_FXSKS) || (conf->chan.sig == SIG_FXSLS) ||
-                   (conf->chan.sig == SIG_EM) || (conf->chan.sig == SIG_EM_E1) ||  (conf->chan.sig == SIG_EMWINK) ||
-                       (conf->chan.sig == SIG_FEATD) || (conf->chan.sig == SIG_FEATDMF) || (conf->chan.sig == SIG_FEATDMF_TA) ||
-                         (conf->chan.sig == SIG_FEATB) || (conf->chan.sig == SIG_E911) ||
-                   (conf->chan.sig == SIG_SF) || (conf->chan.sig == SIG_SFWINK) || (conf->chan.sig == SIG_FGC_CAMA) || (conf->chan.sig == SIG_FGC_CAMAMF) ||
-                       (conf->chan.sig == SIG_SF_FEATD) || (conf->chan.sig == SIG_SF_FEATDMF) ||
-                         (conf->chan.sig == SIG_SF_FEATB)) {
+               switch (chan_sig) {
+               case SIG_FXSKS:
+               case SIG_FXSLS:
+               case SIG_EM:
+               case SIG_EM_E1:
+               case SIG_EMWINK:
+               case SIG_FEATD:
+               case SIG_FEATDMF:
+               case SIG_FEATDMF_TA:
+               case SIG_FEATB:
+               case SIG_E911:
+               case SIG_SF:
+               case SIG_SFWINK:
+               case SIG_FGC_CAMA:
+               case SIG_FGC_CAMAMF:
+               case SIG_SF_FEATD:
+               case SIG_SF_FEATDMF:
+               case SIG_SF_FEATB:
                        p.starttime = 250;
+                       break;
                }
-               if (conf->chan.radio) {
+
+               if (tmp->radio) {
                        /* XXX Waiting to hear back from Jim if these should be adjustable XXX */
                        p.channo = channel;
                        p.rxwinktime = 1;
@@ -7387,7 +7400,7 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_p
                        p.starttime = 1;
                        p.debouncetime = 5;
                }
-               if (!conf->chan.radio) {
+               if (!tmp->radio) {
                        p.channo = channel;
                        /* Override timing settings based on config file */
                        if (conf->timing.prewinktime >= 0)
@@ -7436,12 +7449,11 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_p
 #endif
                tmp->immediate = conf->chan.immediate;
                tmp->transfertobusy = conf->chan.transfertobusy;
-               tmp->sig = conf->chan.sig;
+               tmp->sig = chan_sig;
                tmp->outsigmod = conf->chan.outsigmod;
-               tmp->radio = conf->chan.radio;
                tmp->ringt_base = ringt_base;
                tmp->firstradio = 0;
-               if ((conf->chan.sig == SIG_FXOKS) || (conf->chan.sig == SIG_FXOLS) || (conf->chan.sig == SIG_FXOGS))
+               if ((chan_sig == SIG_FXOKS) || (chan_sig == SIG_FXOLS) || (chan_sig == SIG_FXOGS))
                        tmp->permcallwaiting = conf->chan.callwaiting;
                else
                        tmp->permcallwaiting = 0;
@@ -7536,7 +7548,7 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf *conf, struct zt_p
                                ast_dsp_digitmode(tmp->dsp, DSP_DIGITMODE_DTMF | tmp->dtmfrelax);
                        update_conf(tmp);
                        if (!here) {
-                               if (conf->chan.sig != SIG_PRI)
+                               if (chan_sig != SIG_PRI)
                                        /* Hang it up to be sure it's good */
                                        zt_set_hook(tmp->subs[SUB_REAL].zfd, ZT_ONHOOK);
                        }