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check input for errors. Bug #435 

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2543 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Jeremy McNamara 2004-03-24 03:48:18 +00:00
parent 3b6c8b3f77
commit 4f72330f5c
1 changed files with 13 additions and 7 deletions
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20
apps/app_senddtmf.c
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@ -30,8 +30,9 @@ static char *app = "SendDTMF";
static char *synopsis = "Sends arbitrary DTMF digits";
static char *descrip =
" SendDTMF(digits): Sends DTMF digits on a channel. Returns 0 on success"
"or -1 on a hangup.\n";
" SendDTMF(digits): Sends DTMF digits on a channel. \n"
" Accepted digits: 0-9, *#abcd\n"
" Returns 0 on success or -1 on a hangup.\n";
STANDARD_LOCAL_USER;
@ -45,7 +46,7 @@ static int senddtmf_exec(struct ast_channel *chan, void *data)
struct ast_frame f;
int x;
if (!digits || !strlen(digits)) {
ast_log(LOG_WARNING, "SendDTMF requires an argument (digits)\n");
ast_log(LOG_WARNING, "SendDTMF requires an argument (digits or *#abcd)\n");
return -1;
}
LOCAL_USER_ADD(u);
@ -55,12 +56,17 @@ static int senddtmf_exec(struct ast_channel *chan, void *data)
f.subclass = digits[x];
f.src = "app_senddtmf";
res = ast_write(chan, &f);
if (res)
if (strchr("0123456789*#abcd",digits[x])==NULL) {
ast_log(LOG_WARNING, "Illegal DTMF character in string. (0-9*#abcd allowed)\n");
} else {
res = ast_write(chan, &f);
if (res)
break;
/* Wait 250ms */
res = ast_safe_sleep(chan, 250);
if (res)
/* Wait 250ms */
res = ast_safe_sleep(chan, 250);
if (res)
break;
}
}
if (!res)
if (option_verbose > 2)