int AST_OPTIONAL_API_NAME(ast_adsi_available)(struct ast_channel *chan)
{
int cpe = ast_channel_adsicpe(chan) & 0xff;
if ((cpe == AST_ADSI_AVAILABLE) ||
(cpe == AST_ADSI_UNKNOWN)) {
return 1;
}
return 0;
}
static int adsi_available(struct ast_channel *chan)
{
int cpe = ast_channel_adsicpe(chan) & 0xff;
if ((cpe == AST_ADSI_AVAILABLE) ||
(cpe == AST_ADSI_UNKNOWN)) {
return 1;
}
return 0;
}
static u_char *ast_var_channels_table(struct variable *vp, oid *name, size_t *length,
int exact, size_t *var_len, WriteMethod **write_method)
{
static unsigned long long_ret;
static u_char bits_ret[2];
static char string_ret[256];
struct ast_channel *chan, *bridge;
struct timeval tval;
u_char *ret = NULL;
int i, bit;
struct ast_str *out = ast_str_alloca(2048);
struct ast_channel_iterator *iter;
if (header_simple_table(vp, name, length, exact, var_len, write_method, ast_active_channels()))
return NULL;
i = name[*length - 1] - 1;
if (!(iter = ast_channel_iterator_all_new())) {
return NULL;
}
while ((chan = ast_channel_iterator_next(iter)) && i) {
ast_channel_unref(chan);
i--;
}
iter = ast_channel_iterator_destroy(iter);
if (chan == NULL) {
return NULL;
}
*var_len = sizeof(long_ret);
ast_channel_lock(chan);
switch (vp->magic) {
case ASTCHANINDEX:
long_ret = name[*length - 1];
ret = (u_char *)&long_ret;
break;
case ASTCHANNAME:
if (!ast_strlen_zero(ast_channel_name(chan))) {
ast_copy_string(string_ret, ast_channel_name(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANLANGUAGE:
if (!ast_strlen_zero(ast_channel_language(chan))) {
ast_copy_string(string_ret, ast_channel_language(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANTYPE:
ast_copy_string(string_ret, ast_channel_tech(chan)->type, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMUSICCLASS:
if (!ast_strlen_zero(ast_channel_musicclass(chan))) {
ast_copy_string(string_ret, ast_channel_musicclass(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANBRIDGE:
if ((bridge = ast_bridged_channel(chan)) != NULL) {
ast_copy_string(string_ret, ast_channel_name(bridge), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANMASQ:
if (ast_channel_masq(chan) && !ast_strlen_zero(ast_channel_name(ast_channel_masq(chan)))) {
ast_copy_string(string_ret, ast_channel_name(ast_channel_masq(chan)), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANMASQR:
if (ast_channel_masqr(chan) && !ast_strlen_zero(ast_channel_name(ast_channel_masqr(chan)))) {
ast_copy_string(string_ret, ast_channel_name(ast_channel_masqr(chan)), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANWHENHANGUP:
if (!ast_tvzero(*ast_channel_whentohangup(chan))) {
gettimeofday(&tval, NULL);
long_ret = difftime(ast_channel_whentohangup(chan)->tv_sec, tval.tv_sec) * 100 - tval.tv_usec / 10000;
ret= (u_char *)&long_ret;
}
break;
case ASTCHANAPP:
if (ast_channel_appl(chan)) {
ast_copy_string(string_ret, ast_channel_appl(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANDATA:
if (ast_channel_data(chan)) {
ast_copy_string(string_ret, ast_channel_data(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCONTEXT:
ast_copy_string(string_ret, ast_channel_context(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMACROCONTEXT:
ast_copy_string(string_ret, ast_channel_macrocontext(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMACROEXTEN:
ast_copy_string(string_ret, ast_channel_macroexten(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMACROPRI:
long_ret = ast_channel_macropriority(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANEXTEN:
ast_copy_string(string_ret, ast_channel_exten(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANPRI:
long_ret = ast_channel_priority(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANACCOUNTCODE:
if (!ast_strlen_zero(ast_channel_accountcode(chan))) {
ast_copy_string(string_ret, ast_channel_accountcode(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANFORWARDTO:
if (!ast_strlen_zero(ast_channel_call_forward(chan))) {
ast_copy_string(string_ret, ast_channel_call_forward(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANUNIQUEID:
ast_copy_string(string_ret, ast_channel_uniqueid(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANCALLGROUP:
long_ret = ast_channel_callgroup(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANPICKUPGROUP:
long_ret = ast_channel_pickupgroup(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANSTATE:
long_ret = ast_channel_state(chan) & 0xffff;
ret = (u_char *)&long_ret;
break;
case ASTCHANMUTED:
long_ret = ast_channel_state(chan) & AST_STATE_MUTE ? 1 : 2;
ret = (u_char *)&long_ret;
break;
case ASTCHANRINGS:
long_ret = ast_channel_rings(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDDNID:
if (ast_channel_dialed(chan)->number.str) {
ast_copy_string(string_ret, ast_channel_dialed(chan)->number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDNUM:
if (ast_channel_caller(chan)->id.number.valid && ast_channel_caller(chan)->id.number.str) {
ast_copy_string(string_ret, ast_channel_caller(chan)->id.number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDNAME:
if (ast_channel_caller(chan)->id.name.valid && ast_channel_caller(chan)->id.name.str) {
ast_copy_string(string_ret, ast_channel_caller(chan)->id.name.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDANI:
if (ast_channel_caller(chan)->ani.number.valid && ast_channel_caller(chan)->ani.number.str) {
ast_copy_string(string_ret, ast_channel_caller(chan)->ani.number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDRDNIS:
if (ast_channel_redirecting(chan)->from.number.valid && ast_channel_redirecting(chan)->from.number.str) {
ast_copy_string(string_ret, ast_channel_redirecting(chan)->from.number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDPRES:
long_ret = ast_party_id_presentation(&ast_channel_caller(chan)->id);
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDANI2:
long_ret = ast_channel_caller(chan)->ani2;
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDTON:
long_ret = ast_channel_caller(chan)->id.number.plan;
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDTNS:
long_ret = ast_channel_dialed(chan)->transit_network_select;
ret = (u_char *)&long_ret;
break;
case ASTCHANAMAFLAGS:
long_ret = ast_channel_amaflags(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANADSI:
long_ret = ast_channel_adsicpe(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANTONEZONE:
if (ast_channel_zone(chan)) {
ast_copy_string(string_ret, ast_channel_zone(chan)->country, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANHANGUPCAUSE:
long_ret = ast_channel_hangupcause(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANVARIABLES:
if (pbx_builtin_serialize_variables(chan, &out)) {
*var_len = ast_str_strlen(out);
ret = (u_char *)ast_str_buffer(out);
}
break;
case ASTCHANFLAGS:
bits_ret[0] = 0;
for (bit = 0; bit < 8; bit++)
bits_ret[0] |= ((ast_channel_flags(chan)->flags & (1 << bit)) >> bit) << (7 - bit);
bits_ret[1] = 0;
for (bit = 0; bit < 8; bit++)
bits_ret[1] |= (((ast_channel_flags(chan)->flags >> 8) & (1 << bit)) >> bit) << (7 - bit);
*var_len = 2;
ret = bits_ret;
break;
case ASTCHANTRANSFERCAP:
long_ret = ast_channel_transfercapability(chan);
ret = (u_char *)&long_ret;
default:
break;
}
ast_channel_unlock(chan);
chan = ast_channel_unref(chan);
return ret;
}
int AST_OPTIONAL_API_NAME(ast_adsi_transmit_message_full)(struct ast_channel *chan, unsigned char *msg, int msglen, int msgtype, int dowait)
{
unsigned char *msgs[5] = { NULL, NULL, NULL, NULL, NULL };
int msglens[5], msgtypes[5], newdatamode = (ast_channel_adsicpe(chan) & ADSI_FLAG_DATAMODE), res, x, waitforswitch = 0;
struct ast_format writeformat;
struct ast_format readformat;
ast_format_copy(&writeformat, ast_channel_writeformat(chan));
ast_format_copy(&readformat, ast_channel_readformat(chan));
for (x = 0; x < msglen; x += (msg[x+1]+2)) {
if (msg[x] == ADSI_SWITCH_TO_DATA) {
ast_debug(1, "Switch to data is sent!\n");
waitforswitch++;
newdatamode = ADSI_FLAG_DATAMODE;
}
if (msg[x] == ADSI_SWITCH_TO_VOICE) {
ast_debug(1, "Switch to voice is sent!\n");
waitforswitch++;
newdatamode = 0;
}
}
msgs[0] = msg;
msglens[0] = msglen;
msgtypes[0] = msgtype;
if (msglen > 253) {
ast_log(LOG_WARNING, "Can't send ADSI message of %d bytes, too large\n", msglen);
return -1;
}
ast_stopstream(chan);
if (ast_set_write_format_by_id(chan, AST_FORMAT_ULAW)) {
ast_log(LOG_WARNING, "Unable to set write format to ULAW\n");
return -1;
}
if (ast_set_read_format_by_id(chan, AST_FORMAT_ULAW)) {
ast_log(LOG_WARNING, "Unable to set read format to ULAW\n");
if (writeformat.id) {
if (ast_set_write_format(chan, &writeformat)) {
ast_log(LOG_WARNING, "Unable to restore write format to %s\n", ast_getformatname(&writeformat));
}
}
return -1;
}
res = __adsi_transmit_messages(chan, msgs, msglens, msgtypes);
if (dowait) {
ast_debug(1, "Wait for switch is '%d'\n", waitforswitch);
while (waitforswitch-- && ((res = ast_waitfordigit(chan, 1000)) > 0)) {
res = 0;
ast_debug(1, "Waiting for 'B'...\n");
}
}
if (!res) {
ast_channel_adsicpe_set(chan, (ast_channel_adsicpe(chan) & ~ADSI_FLAG_DATAMODE) | newdatamode);
}
if (writeformat.id) {
ast_set_write_format(chan, &writeformat);
}
if (readformat.id) {
ast_set_read_format(chan, &readformat);
}
if (!res) {
res = ast_safe_sleep(chan, 100 );
}
return res;
}
static int __adsi_transmit_messages(struct ast_channel *chan, unsigned char **msg, int *msglen, int *msgtype)
{
/* msglen must be no more than 256 bits, each */
unsigned char buf[24000 * 5];
int pos = 0, res, x, start = 0, retries = 0, waittime, rem = 0, def;
char ack[3];
struct ast_frame *f;
if (ast_channel_adsicpe(chan) == AST_ADSI_UNAVAILABLE) {
/* Don't bother if we know they don't support ADSI */
errno = ENOSYS;
return -1;
}
while (retries < maxretries) {
struct ast_format tmpfmt;
if (!(ast_channel_adsicpe(chan) & ADSI_FLAG_DATAMODE)) {
/* Generate CAS (no SAS) */
ast_format_set(&tmpfmt, AST_FORMAT_ULAW, 0);
ast_gen_cas(buf, 0, 680, &tmpfmt);
/* Send CAS */
if (adsi_careful_send(chan, buf, 680, NULL)) {
ast_log(LOG_WARNING, "Unable to send CAS\n");
}
/* Wait For DTMF result */
waittime = 500;
for (;;) {
if (((res = ast_waitfor(chan, waittime)) < 1)) {
/* Didn't get back DTMF A in time */
ast_debug(1, "No ADSI CPE detected (%d)\n", res);
if (!ast_channel_adsicpe(chan)) {
ast_channel_adsicpe_set(chan, AST_ADSI_UNAVAILABLE);
}
errno = ENOSYS;
return -1;
}
waittime = res;
if (!(f = ast_read(chan))) {
ast_debug(1, "Hangup in ADSI\n");
return -1;
}
if (f->frametype == AST_FRAME_DTMF) {
if (f->subclass.integer == 'A') {
/* Okay, this is an ADSI CPE. Note this for future reference, too */
if (!ast_channel_adsicpe(chan)) {
ast_channel_adsicpe_set(chan, AST_ADSI_AVAILABLE);
}
break;
} else {
if (f->subclass.integer == 'D') {
ast_debug(1, "Off-hook capable CPE only, not ADSI\n");
} else {
ast_log(LOG_WARNING, "Unknown ADSI response '%c'\n", f->subclass.integer);
}
if (!ast_channel_adsicpe(chan)) {
ast_channel_adsicpe_set(chan, AST_ADSI_UNAVAILABLE);
}
errno = ENOSYS;
ast_frfree(f);
return -1;
}
}
ast_frfree(f);
}
ast_debug(1, "ADSI Compatible CPE Detected\n");
} else {
ast_debug(1, "Already in data mode\n");
}
x = 0;
pos = 0;
#if 1
def= ast_channel_defer_dtmf(chan);
#endif
while ((x < 6) && msg[x]) {
if ((res = adsi_generate(buf + pos, msgtype[x], msg[x], msglen[x], x+1 - start, (x == 5) || !msg[x+1], ast_format_set(&tmpfmt, AST_FORMAT_ULAW,0))) < 0) {
ast_log(LOG_WARNING, "Failed to generate ADSI message %d on channel %s\n", x + 1, ast_channel_name(chan));
return -1;
}
ast_debug(1, "Message %d, of %d input bytes, %d output bytes\n", x + 1, msglen[x], res);
pos += res;
x++;
}
rem = 0;
res = adsi_careful_send(chan, buf, pos, &rem);
if (!def) {
ast_channel_undefer_dtmf(chan);
}
if (res) {
return -1;
}
ast_debug(1, "Sent total spill of %d bytes\n", pos);
memset(ack, 0, sizeof(ack));
/* Get real result and check for hangup */
if ((res = ast_readstring(chan, ack, 2, 1000, 1000, "")) < 0) {
return -1;
}
if (ack[0] == 'D') {
ast_debug(1, "Acked up to message %d\n", atoi(ack + 1)); start += atoi(ack + 1);
if (start >= x) {
break;
} else {
retries++;
ast_debug(1, "Retransmitting (%d), from %d\n", retries, start + 1);
}
} else {
retries++;
ast_log(LOG_WARNING, "Unexpected response to ack: %s (retry %d)\n", ack, retries);
}
}
if (retries >= maxretries) {
ast_log(LOG_WARNING, "Maximum ADSI Retries (%d) exceeded\n", maxretries);
errno = ETIMEDOUT;
return -1;
}
return 0;
}
