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app_mf, app_sf: Return -1 if channel hangs up.

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The ReceiveMF and ReceiveSF applications currently always
return 0, even if a channel has hung up. The call will still
end but generally applications are expected to return -1 if
the channel has hung up.

We now return -1 if a hangup occured to bring this behavior
in line with this norm. This has no functional impact, but
merely increases conformity with how these modules interact
with the PBX core.

ASTERISK-29951 #close

Change-Id: I234d755050ab8ed58f197c6925b968ba26b14033
This commit is contained in:
Naveen Albert
2022-03-05 01:41:30 +00:00
committed by Kevin Harwell
parent b7edc08e33
commit 9024bb989b
2 changed files with 31 additions and 12 deletions
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29
apps/app_sf.c
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@@ -155,6 +155,21 @@ AST_APP_OPTIONS(read_app_options, {
static const char *readsf_name = "ReceiveSF";
static const char sendsf_name[] = "SendSF";
/*!
* \brief Detects SF digits on channel using DSP
*
* \param chan channel on which to read digits
* \param buf Buffer in which to store digits
* \param buflen Size of buffer
* \param timeout ms to wait for all digits before giving up
* \param maxdigits Maximum number of digits
* \param freq Frequency to use
* \param features DSP features
* \param extrapulses Whether to recognize extra pulses
*
* \retval 0 if successful
* \retval -1 if unsuccessful (including hangup).
*/
static int read_sf_digits(struct ast_channel *chan, char *buf, int buflen, int timeout, int maxdigits, int freq, int features, int extrapulses) {
/* Bell System Technical Journal 39 (Nov. 1960) */
#define SF_MIN_OFF 25
@@ -169,6 +184,7 @@ static int read_sf_digits(struct ast_channel *chan, char *buf, int buflen, int t
char *str = buf;
int hits = 0, digits_read = 0;
unsigned short int sf_on = 0;
int res = 0;
if (!(dsp = ast_dsp_new())) {
ast_log(LOG_WARNING, "Unable to allocate DSP!\n");
@@ -261,7 +277,7 @@ static int read_sf_digits(struct ast_channel *chan, char *buf, int buflen, int t
ast_debug(2, "Got more than 10 pulses, truncating to 10\n");
hits = 0; /* 10 dial pulses = digit 0 */
*str++ = hits + '0';
}
}
} else {
if (hits == 10) {
hits = 0; /* 10 dial pulses = digit 0 */
@@ -281,13 +297,14 @@ static int read_sf_digits(struct ast_channel *chan, char *buf, int buflen, int t
ast_frfree(frame);
} else {
pbx_builtin_setvar_helper(chan, "RECEIVESFSTATUS", "HANGUP");
res = -1;
}
}
if (dsp) {
ast_dsp_free(dsp);
}
ast_debug(3, "channel '%s' - event loop stopped { timeout: %d, remaining_time: %d }\n", ast_channel_name(chan), timeout, remaining_time);
return 0;
return res;
}
static int read_sf_exec(struct ast_channel *chan, const char *data)
@@ -297,7 +314,7 @@ static int read_sf_exec(struct ast_channel *chan, const char *data)
double tosec;
struct ast_flags flags = {0};
char *argcopy = NULL;
int features = 0, digits = 0, to = 0, freq = 2600;
int res, features = 0, digits = 0, to = 0, freq = 2600;
AST_DECLARE_APP_ARGS(arglist,
AST_APP_ARG(variable);
@@ -360,14 +377,14 @@ static int read_sf_exec(struct ast_channel *chan, const char *data)
features |= DSP_DIGITMODE_RELAXDTMF;
}
read_sf_digits(chan, tmp, BUFFER_SIZE, to, digits, freq, features, ast_test_flag(&flags, OPT_EXTRAPULSES));
res = read_sf_digits(chan, tmp, BUFFER_SIZE, to, digits, freq, features, ast_test_flag(&flags, OPT_EXTRAPULSES));
pbx_builtin_setvar_helper(chan, arglist.variable, tmp);
if (!ast_strlen_zero(tmp)) {
ast_verb(3, "SF digits received: '%s'\n", tmp);
} else {
} else if (!res) { /* if channel hung up, don't print anything out */
ast_verb(3, "No SF digits received.\n");
}
return 0;
return res;
}
static int sendsf_exec(struct ast_channel *chan, const char *vdata)