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sangoma: sofia contact replace

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This commit is contained in:
Moises Silva 2010-08-31 12:54:54 -04:00
parent 3e2056833b
commit 161da3306a
1 changed files with 89 additions and 0 deletions
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89
src/mod/endpoints/mod_sofia/mod_sofia.c
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@ -3300,6 +3300,7 @@ SWITCH_STANDARD_API(sofia_contact_function)
char *p;
sofia_profile_t *profile = NULL;
const char *exclude_contact = NULL;
const char *user_replacement = NULL;
char *reply = "error/facility_not_subscribed";
if (!cmd) {
@ -3310,6 +3311,7 @@ SWITCH_STANDARD_API(sofia_contact_function)
if (session) {
switch_channel_t *channel = switch_core_session_get_channel(session);
exclude_contact = switch_channel_get_variable(channel, "sip_exclude_contact");
user_replacement = switch_channel_get_variable(channel, "sip_contact_user_replacement");
}
@ -3388,6 +3390,93 @@ SWITCH_STANDARD_API(sofia_contact_function)
reply = "error/user_not_registered";
}
if (user_replacement) {
int urlcount = 0;
int copyerr = 0;
char *newreply = NULL;
char *urlstart = NULL;
char *newptr = NULL;
char *bufend = NULL;
char *str = reply;
switch_size_t copysize = 0;
switch_size_t replacesize = strlen(user_replacement);
switch_size_t allocsize = 0;
/* first pass to count how many URLs we have */
while ((urlstart = strcasestr(str, "sip:")) || (urlstart = strcasestr(str, "sips:"))) {
urlcount++;
str = urlstart + 4;
}
if (!urlcount) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "sofia_contact(): no sip URLs found to replace the user\n");
copyerr++;
goto copydone;
}
/* this allocates a bit more than needed but better safe than sorry doing more funky math */
allocsize = strlen(reply) + (urlcount * replacesize);
newreply = switch_core_session_alloc(session, allocsize);
if (!newreply) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "sofia_contact(): no buffer space available for replacement\n");
copyerr++;
goto copydone;
}
/* get a working pointer to the new reply */
newptr = newreply;
/* pointer to the end of the allocated buffer for safety checks */
bufend = newreply + allocsize - 1;
*bufend = 0;
/* go thru all the urls and replace the user part */
str = reply;
while ((urlstart = strcasestr(str, "sip:")) || (urlstart = strcasestr(str, "sips:"))) {
/* found an URL, copy up to the start of the url */
copysize = ( urlstart - str ) + 4;
/* double check boundaries before copying anything at all (this should not happen) */
if ((newptr + copysize + replacesize) >= bufend) {
copyerr++;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "sofia_contact(): wow buffer was not big enough!\n");
break;
}
/* copy the original contact string except for the user */
memcpy(newptr, str, copysize);
newptr += copysize;
/* copy the user replacement */
memcpy(newptr, user_replacement, replacesize);
newptr += replacesize;
/* skip the original user part */
str = strchr(urlstart, '@');
if (!str) {
copyerr++;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "sofia_contact(): not host part found for contact\n");
break;
}
/* continue searching for the next sip: URL */
}
copydone:
if (!copyerr) {
/* copy the remaining reply string */
copysize = strlen(str);
if ((newptr + copysize) >= bufend) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "sofia_contact(): wow buffer was not big enough, close, but not enough!\n");
} else {
strcpy(newptr, str);
reply = newreply;
}
} else {
reply = "error/replacement error";
}
}
stream->write_function(stream, "%s", reply);
reply = NULL;