850 lines
26 KiB
C
850 lines
26 KiB
C
/* console handling
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*
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* (C) 2020 by Andreas Eversberg <jolly@eversberg.eu>
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <stddef.h>
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#include "../libdebug/debug.h"
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#include "../libsample/sample.h"
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#include "../libg711/g711.h"
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#include "../libsound/sound.h"
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#include "telephone.h"
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#include "../libosmocc/helper.h"
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static struct osmo_cc_helper_audio_codecs codecs[] = {
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{ "PCMA", 8000, 1, g711_encode_alaw, g711_decode_alaw },
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{ "PCMU", 8000, 1, g711_encode_ulaw, g711_decode_ulaw },
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{ NULL, 0, 0, NULL, NULL},
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};
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const char *cause_name(int cause)
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{
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static char cause_str[16];
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switch (cause) {
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case OSMO_CC_ISDN_CAUSE_NORM_CALL_CLEAR:
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return "hangup";
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case OSMO_CC_ISDN_CAUSE_USER_BUSY:
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return "busy";
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case OSMO_CC_ISDN_CAUSE_USER_ALERTING_NA:
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return "no-answer";
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case OSMO_CC_ISDN_CAUSE_DEST_OOO:
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case OSMO_CC_ISDN_CAUSE_NETWORK_OOO:
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return "out-of-order";
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case OSMO_CC_ISDN_CAUSE_INV_NR_FORMAT:
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return "invalid-number";
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case OSMO_CC_ISDN_CAUSE_NO_CIRCUIT_CHAN:
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return "no-channel";
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case OSMO_CC_ISDN_CAUSE_TEMP_FAILURE:
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return "link-failure";
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case OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL:
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return "resource-unavail";
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default:
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sprintf(cause_str, "cause=%d", cause);
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return cause_str;
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}
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}
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static char ui_text[256];
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static char ui_clear[256];
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static int ui_autoalert;
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static int ui_autoanswer;
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static int ui_len = 0;
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#define UI_MAX_DIGITS 33
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static char ui_remote_id[256] = ""; /* what we dial or who called us */
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static char ui_remote_dialing[256] = ""; /* what remote called us with */
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static char ui_local_id[256] = ""; /* our ID */
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static const char ui_digits[] = "0123456789*#ABCDE";
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static uint8_t ui_cause = 0;
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static void append_string(char *string, size_t size, char c)
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{
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size_t len = strlen(string);
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int i;
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/* string full */
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if (len == size - 1)
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return;
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for (i = 0; i < (int)strlen(ui_digits); i++) {
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if (c == ui_digits[i]) {
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string[len] = c;
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string[len + 1] = '\0';
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break;
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}
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}
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}
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/*
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* Endpoint instance
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*/
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/* create interface instance */
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telephone_t *telephone_create(void)
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{
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telephone_t *telephone_ep;
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telephone_ep = calloc(1, sizeof(*telephone_ep));
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if (!telephone_ep) {
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PDEBUG(DTEL, DEBUG_ERROR, "No memory!\n");
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abort();
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}
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PDEBUG(DTEL, DEBUG_DEBUG, "Telephone instance created\n");
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return telephone_ep;
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}
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static void telephone_close(telephone_t *telephone_ep);
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static void call_destroy(call_t *call);
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/* destroy interface instance and free all resource */
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void telephone_destroy(telephone_t *telephone_ep)
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{
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/* remove stack instance */
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telephone_close(telephone_ep);
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/* destroy all calls */
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while (telephone_ep->call_list)
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call_destroy(telephone_ep->call_list);
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free((char *)telephone_ep->name);
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free(telephone_ep);
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PDEBUG(DTEL, DEBUG_DEBUG, "Telephone instance destroyed\n");
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}
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/* initialization and configuration of interface instance */
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int telephone_init(telephone_t *telephone_ep, const char *name, const char *callerid, uint8_t serving_location, int early_audio, const char *audiodev, int samplerate, int __attribute__((unused)) latspl)
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{
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telephone_ep->name = strdup(name);
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telephone_ep->serving_location = serving_location;
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telephone_ep->early_audio = early_audio;
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telephone_ep->samplerate = samplerate;
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telephone_ep->latspl = latspl;
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telephone_ep->loopback = 0;
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strcpy(ui_local_id, callerid);
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if (audiodev) {
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#ifdef HAVE_ALSA
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/* open sound device for call control */
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/* use factor 1.4 of speech level for complete range of sound card */
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telephone_ep->sound = sound_open(audiodev, NULL, NULL, NULL, 1, 0.0, samplerate, latspl, 1 / (SPEECH_LEVEL * 0.7079), 4000.0, 2.0);
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if (!telephone_ep->sound) {
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PDEBUG(DTEL, DEBUG_ERROR, "No sound device!\n");
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return -EIO;
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}
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sound_start(telephone_ep->sound);
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#else
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PDEBUG(DTEL, DEBUG_ERROR, "No sound card support compiled in!\n");
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return -ENOTSUP;
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#endif
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}
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return 0;
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}
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static void telephone_close(telephone_t *telephone_ep)
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{
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if (telephone_ep->sound) {
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sound_close(telephone_ep->sound);
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telephone_ep->sound = NULL;
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}
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}
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/*
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* call instance
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*/
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static const char *call_state_name[] = {
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"on hook",
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"incoming setup",
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"outgoing setup",
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"incoming overlap",
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"outgoing overlap",
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"incoming proceeding",
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"outgoing proceeding",
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"incoming alerting",
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"outgoing alerting",
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"connected",
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"incoming disconect",
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"outgoing disconect",
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};
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static void call_new_state(call_t *call, enum call_state state)
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{
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PDEBUG(DTEL, DEBUG_DEBUG, "Call state '%s' -> '%s'\n", call_state_name[call->state], call_state_name[state]);
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call->state = state;
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}
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static call_t *call_create(telephone_t *telephone_ep)
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{
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call_t *call, **call_p;
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int rc;
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call = calloc(1, sizeof(*call));
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if (!call) {
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PDEBUG(DTEL, DEBUG_ERROR, "No memory!\n");
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abort();
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}
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call_p = &telephone_ep->call_list;
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while (*call_p)
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call_p = &((*call_p)->next);
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*call_p = call;
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call->telephone_ep = telephone_ep;
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/* init sample rate conversion */
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rc = init_samplerate(&call->srstate, 8000.0, (double)telephone_ep->samplerate, 3300.0);
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if (rc < 0)
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abort();
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/* allocate jitter buffer */
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rc = jitter_create(&call->dejitter, telephone_ep->samplerate / 10); // FIXME: size
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if (rc < 0)
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abort();
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PDEBUG(DTEL, DEBUG_DEBUG, "Created new call instance\n");
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return call;
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}
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static void call_destroy(call_t *call)
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{
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call_t **call_p;
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/* free sdp */
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free((char *)call->sdp);
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/* free jitter buffer */
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jitter_destroy(&call->dejitter);
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/* free session description */
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if (call->cc_session)
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osmo_cc_free_session(call->cc_session);
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/* detach */
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call_p = &call->telephone_ep->call_list;
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while (*call_p) {
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if (*call_p == call)
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break;
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call_p = &((*call_p)->next);
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}
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*call_p = call->next;
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free(call);
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PDEBUG(DTEL, DEBUG_DEBUG, "destroyed call instance\n");
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}
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/*
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* audio handling
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*/
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/* take audio from CC and store in jitter buffer */
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void down_audio(struct osmo_cc_session_codec *codec, uint16_t __attribute__((unused)) sequence_number, uint32_t __attribute__((unused)) timestamp, uint8_t *data, int len)
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{
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call_t *call = codec->media->session->priv;
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int count = len / 2;
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sample_t samples[count];
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if (call->telephone_ep->loopback != 3) {
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sample_t up[(int)((double)count * call->srstate.factor + 0.5) + 10];
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int16_to_samples(samples, (int16_t *)data, count);
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count = samplerate_upsample(&call->srstate, samples, count, up);
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jitter_save(&call->dejitter, up, count);
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}
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}
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void alsa_work(telephone_t *telephone_ep)
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{
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if (!telephone_ep->sound)
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return;
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#ifdef HAVE_ALSA
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/* handle audio, if sound device is used */
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call_t *call;
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sample_t samples[telephone_ep->latspl + 10], *samples_list[1];
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uint8_t *power_list[1];
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int count;
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int rc;
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/* hunt for call */
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for (call = telephone_ep->call_list; call; call = call->next)
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break; // just any call
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count = sound_get_tosend(telephone_ep->sound, telephone_ep->latspl);
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if (count < 0) {
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PDEBUG(DTEL, DEBUG_ERROR, "Failed to get samples in buffer (rc = %d)!\n", count);
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if (count == -EPIPE)
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PDEBUG(DTEL, DEBUG_ERROR, "Trying to recover.\n");
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return;
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}
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if (count > 0) {
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if (call)
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jitter_load(&call->dejitter, samples, count);
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else
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memset(samples, 0, sizeof(*samples) * count);
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samples_list[0] = samples;
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power_list[0] = NULL;
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rc = sound_write(telephone_ep->sound, samples_list, power_list, count, NULL, NULL, 1);
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if (rc < 0) {
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PDEBUG(DTEL, DEBUG_ERROR, "Failed to write TX data to sound device (rc = %d)\n", rc);
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if (rc == -EPIPE)
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PDEBUG(DTEL, DEBUG_ERROR, "Trying to recover.\n");
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return;
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}
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}
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samples_list[0] = samples;
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count = sound_read(telephone_ep->sound, samples_list, telephone_ep->latspl, 1, NULL);
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if (count < 0) {
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PDEBUG(DTEL, DEBUG_ERROR, "Failed to read from sound device (rc = %d)!\n", count);
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if (count == -EPIPE)
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PDEBUG(DTEL, DEBUG_ERROR, "Trying to recover.\n");
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return;
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}
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if (call && count) {
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int i;
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if (telephone_ep->loopback == 3)
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jitter_save(&call->dejitter, samples, count);
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count = samplerate_downsample(&call->srstate, samples, count);
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/* put samples into ring buffer */
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for (i = 0; i < count; i++) {
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call->tx_buffer[call->tx_buffer_pos] = samples[i];
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/* if ring buffer wrapps, deliver data down to call process */
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if (++call->tx_buffer_pos == 160) {
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call->tx_buffer_pos = 0;
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/* only if we have a call */
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if (call->cc_callref && call->codec) {
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int16_t data[160];
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samples_to_int16(data, call->tx_buffer, 160);
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osmo_cc_rtp_send(call->codec, (uint8_t *)data, 160 * 2, 1, 160);
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}
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}
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}
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}
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//printf("%p, %p\n", call, call ? call->codec : NULL);
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// if (call && call->codec)
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// while (osmo_cc_rtp_receive(call->codec->media) >= 0);
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#endif
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}
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void rtp_work(telephone_t *telephone_ep)
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{
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call_t *call;
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call = telephone_ep->call_list;
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while (call) {
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if (call->cc_session)
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osmo_cc_session_handle(call->cc_session);
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call = call->next;
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}
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}
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/*
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* handle message from CC
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*/
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static void release_reject_ind(call_t *call, uint8_t msg_type, uint8_t isdn_cause)
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{
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osmo_cc_msg_t *new_msg;
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/* create osmo-cc message */
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new_msg = osmo_cc_new_msg(msg_type);
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/* cause */
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osmo_cc_add_ie_cause(new_msg, call->telephone_ep->serving_location, isdn_cause, 0, 0);
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/* send message to osmo-cc */
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osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, new_msg);
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/* change state */
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call_new_state(call, CALL_STATE_IDLE);
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/* destroy call */
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call_destroy(call);
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}
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void cc_message(osmo_cc_endpoint_t *ep, uint32_t callref, osmo_cc_msg_t *msg)
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{
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telephone_t *telephone_ep = ep->priv;
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call_t *call, *other;
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osmo_cc_msg_t *new_msg;
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uint8_t type, plan, present, screen;
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char callerid[128], dialing[128];
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uint8_t coding, location, progress, socket_cause;
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uint16_t sip_cause;
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int rc;
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int i;
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/* hunt for callref */
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call = telephone_ep->call_list;
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while (call) {
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if (call->cc_callref == callref)
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break;
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call = call->next;
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}
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/* process SETUP */
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if (!call) {
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if (msg->type != OSMO_CC_MSG_SETUP_REQ) {
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PDEBUG(DTEL, DEBUG_ERROR, "received message without call instance, please fix!\n");
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goto done;
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}
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/* creating call instance */
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call = call_create(telephone_ep);
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if (!call) {
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PDEBUG(DTEL, DEBUG_ERROR, "Cannot create calll instance.\n");
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abort();
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}
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/* link with cc */
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call->cc_callref = callref;
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}
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switch (msg->type) {
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case OSMO_CC_MSG_SETUP_REQ: /* dial-out command received from epoint */
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/* hunt for call */
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for (other = telephone_ep->call_list; other; other = other->next) {
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if (other != call)
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break;
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}
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if (other) {
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release_reject_ind(call, OSMO_CC_MSG_REJ_IND, OSMO_CC_ISDN_CAUSE_USER_BUSY);
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break;
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}
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/* calling */
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rc = osmo_cc_get_ie_calling(msg, 0, &type, &plan, &present, &screen, callerid, sizeof(callerid));
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if (rc >= 0)
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strncpy(ui_remote_id, callerid, sizeof(ui_remote_id) - 1);
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/* called */
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rc = osmo_cc_get_ie_called(msg, 0, &type, &plan, dialing, sizeof(dialing));
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if (rc >= 0)
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strncpy(ui_remote_dialing, dialing, sizeof(ui_remote_dialing) - 1);
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PDEBUG(DTEL, DEBUG_INFO, "Incoming call from '%s' to '%s'\n", ui_remote_id, ui_remote_dialing);
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/* sdp accept */
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call->sdp = osmo_cc_helper_audio_accept(call, codecs, down_audio, msg, &call->cc_session, &call->codec, 0);
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if (!call->sdp) {
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release_reject_ind(call, OSMO_CC_MSG_REJ_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
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break;
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}
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call->sdp = strdup(call->sdp);
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/* change state */
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call_new_state(call, CALL_STATE_IN_SETUP);
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if (ui_autoanswer) {
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/* create osmo-cc message */
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new_msg = osmo_cc_new_msg(OSMO_CC_MSG_SETUP_CNF);
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/* sdp */
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osmo_cc_add_ie_sdp(new_msg, call->sdp);
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free((char *)call->sdp);
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call->sdp = NULL;
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/* send message to osmo-cc */
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osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, new_msg);
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/* change state */
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call_new_state(call, CALL_STATE_CONNECT);
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} else
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if (ui_autoalert) {
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/* create osmo-cc message */
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new_msg = osmo_cc_new_msg(OSMO_CC_MSG_ALERT_IND);
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/* sdp */
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osmo_cc_add_ie_sdp(new_msg, call->sdp);
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free((char *)call->sdp);
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call->sdp = NULL;
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/* send message to osmo-cc */
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osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, new_msg);
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/* change state */
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call_new_state(call, CALL_STATE_IN_ALERTING);
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}
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break;
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case OSMO_CC_MSG_SETUP_ACK_REQ: /* more information is needed */
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rc = osmo_cc_helper_audio_negotiate(msg, &call->cc_session, &call->codec);
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if (rc < 0) {
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release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
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break;
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}
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PDEBUG(DTEL, DEBUG_INFO, "Incoming call acknowledged\n");
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/* change state */
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call_new_state(call, CALL_STATE_OUT_OVERLAP);
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break;
|
|
case OSMO_CC_MSG_PROC_REQ: /* call of endpoint is proceeding */
|
|
rc = osmo_cc_helper_audio_negotiate(msg, &call->cc_session, &call->codec);
|
|
if (rc < 0) {
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
|
|
break;
|
|
}
|
|
PDEBUG(DTEL, DEBUG_INFO, "Incoming call proceeding\n");
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_OUT_PROCEEDING);
|
|
break;
|
|
case OSMO_CC_MSG_ALERT_REQ: /* call of endpoint is ringing */
|
|
rc = osmo_cc_helper_audio_negotiate(msg, &call->cc_session, &call->codec);
|
|
if (rc < 0) {
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
|
|
break;
|
|
}
|
|
PDEBUG(DTEL, DEBUG_INFO, "Incoming call alerting\n");
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_OUT_ALERTING);
|
|
break;
|
|
case OSMO_CC_MSG_SETUP_RSP: /* call of endpoint is connected */
|
|
rc = osmo_cc_helper_audio_negotiate(msg, &call->cc_session, &call->codec);
|
|
if (rc < 0) {
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
|
|
break;
|
|
}
|
|
PDEBUG(DTEL, DEBUG_INFO, "Incoming call acknowledged\n");
|
|
/* create osmo-cc message */
|
|
new_msg = osmo_cc_new_msg(OSMO_CC_MSG_SETUP_COMP_IND);
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, new_msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_CONNECT);
|
|
break;
|
|
case OSMO_CC_MSG_SETUP_COMP_REQ: /* call of endpoint is connected */
|
|
break;
|
|
case OSMO_CC_MSG_INFO_REQ: /* overlap dialing */
|
|
rc = osmo_cc_get_ie_called(msg, 0, &type, &plan, dialing, sizeof(dialing));
|
|
if (rc < 0)
|
|
dialing[0] = '\0';
|
|
PDEBUG(DTEL, DEBUG_INFO, "Incoming call received additional dialing '%s'\n", dialing);
|
|
for (i = 0; dialing[i]; i++) {
|
|
/* add to dial string */
|
|
append_string(ui_remote_dialing, sizeof(ui_remote_dialing), dialing[i]);
|
|
}
|
|
break;
|
|
case OSMO_CC_MSG_PROGRESS_REQ: /* progress */
|
|
rc = osmo_cc_helper_audio_negotiate(msg, &call->cc_session, &call->codec);
|
|
if (rc < 0) {
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
|
|
break;
|
|
}
|
|
PDEBUG(DTEL, DEBUG_INFO, "Incoming call received progress\n");
|
|
break;
|
|
case OSMO_CC_MSG_NOTIFY_REQ: /* display and notifications */
|
|
break;
|
|
case OSMO_CC_MSG_REJ_REQ: /* call has been rejected */
|
|
/* get cause */
|
|
rc = osmo_cc_get_ie_cause(msg, 0, &location, &ui_cause, &sip_cause, &socket_cause);
|
|
if (rc < 0)
|
|
ui_cause = OSMO_CC_ISDN_CAUSE_NORM_CALL_CLEAR;
|
|
else
|
|
PDEBUG(DTEL, DEBUG_INFO, "Incoming call rejected: ISDN cause = %d, SIP cause = %d, socket cause = %d\n", ui_cause, sip_cause, socket_cause);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_IDLE);
|
|
/* destroy call */
|
|
call_destroy(call);
|
|
break;
|
|
case OSMO_CC_MSG_DISC_REQ: /* call has been disconnected */
|
|
rc = osmo_cc_helper_audio_negotiate(msg, &call->cc_session, &call->codec);
|
|
if (rc < 0) {
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_RESOURCE_UNAVAIL);
|
|
break;
|
|
}
|
|
/* get cause */
|
|
rc = osmo_cc_get_ie_cause(msg, 0, &location, &ui_cause, &sip_cause, &socket_cause);
|
|
if (rc < 0)
|
|
ui_cause = OSMO_CC_ISDN_CAUSE_NORM_CALL_CLEAR;
|
|
else
|
|
PDEBUG(DTEL, DEBUG_INFO, "Disconnect by remote: ISDN cause = %d, SIP cause = %d, socket cause = %d\n", ui_cause, sip_cause, socket_cause);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_IN_DISCONNECT);
|
|
/* progress indicator */
|
|
rc = osmo_cc_get_ie_progress(msg, 0, &coding, &location, &progress);
|
|
if (rc < 0 || coding != OSMO_CC_CODING_ITU_T || !(progress == 1 || progress == 8)) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "no audio after disconnect, releasing!\n");
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, ui_cause);
|
|
}
|
|
|
|
break;
|
|
case OSMO_CC_MSG_REL_REQ: /* release call */
|
|
/* get cause */
|
|
rc = osmo_cc_get_ie_cause(msg, 0, &location, &ui_cause, &sip_cause, &socket_cause);
|
|
if (rc < 0)
|
|
ui_cause = OSMO_CC_ISDN_CAUSE_NORM_CALL_CLEAR;
|
|
else
|
|
PDEBUG(DTEL, DEBUG_INFO, "Disconnect by remote: ISDN cause = %d, SIP cause = %d, socket cause = %d\n", ui_cause, sip_cause, socket_cause);
|
|
/* create osmo-cc message */
|
|
new_msg = osmo_cc_new_msg(OSMO_CC_MSG_REL_CNF);
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, new_msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_IDLE);
|
|
/* destroy call */
|
|
call_destroy(call);
|
|
break;
|
|
default:
|
|
PDEBUG(DTEL, DEBUG_ERROR, "received an unsupported CC message: %d\n", msg->type);
|
|
}
|
|
|
|
done:
|
|
osmo_cc_free_msg(msg);
|
|
}
|
|
|
|
/*
|
|
* user interface
|
|
*/
|
|
|
|
|
|
static void _clear_ui_text(void)
|
|
{
|
|
if (!ui_len)
|
|
return;
|
|
|
|
fwrite(ui_clear, ui_len, 1, stdout);
|
|
// note: fflused by user of this function
|
|
ui_len = 0;
|
|
}
|
|
|
|
static void _print_ui_text(void)
|
|
{
|
|
if (!ui_len)
|
|
return;
|
|
|
|
printf("\033[1;37m");
|
|
fwrite(ui_text, ui_len, 1, stdout);
|
|
printf("\033[0;39m");
|
|
}
|
|
|
|
int ui_init(const char *remote_id, int autoalert, int autoanswer)
|
|
{
|
|
clear_console_text = _clear_ui_text;
|
|
print_console_text = _print_ui_text;
|
|
ui_autoalert = autoalert;
|
|
ui_autoanswer = autoanswer;
|
|
|
|
strncpy(ui_remote_id, remote_id, sizeof(ui_remote_id) - 1);
|
|
ui_remote_id[sizeof(ui_remote_id) - 1] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ui_work(telephone_t *telephone_ep, int c)
|
|
{
|
|
int work = (c > 0) ? 1 : 0;
|
|
call_t *call;
|
|
osmo_cc_msg_t *msg;
|
|
char text[1024] = "";
|
|
char display[UI_MAX_DIGITS + 1];
|
|
int len;
|
|
|
|
/* hunt for call */
|
|
for (call = telephone_ep->call_list; call; call = call->next)
|
|
break; // just any call
|
|
if (!call) {
|
|
if (c > 0) {
|
|
append_string(ui_remote_id, sizeof(ui_remote_id), c);
|
|
if ((c == 8 || c == 127) && strlen(ui_remote_id))
|
|
ui_remote_id[strlen(ui_remote_id) - 1] = '\0';
|
|
dial_after_hangup:
|
|
if (c == 'd') {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Outgoing call from '%s' to '%s'\n", ui_local_id, ui_remote_id);
|
|
ui_remote_dialing[0] = '\0';
|
|
/* creating call instance */
|
|
call = call_create(telephone_ep);
|
|
if (!call) {
|
|
PDEBUG(DTEL, DEBUG_ERROR, "Cannot create calll instance.\n");
|
|
abort();
|
|
}
|
|
|
|
/* setup message */
|
|
msg = osmo_cc_new_msg(OSMO_CC_MSG_SETUP_IND);
|
|
/* network type */
|
|
osmo_cc_add_ie_calling_network(msg, OSMO_CC_NETWORK_ALSA_NONE, "");
|
|
/* calling number */
|
|
osmo_cc_add_ie_calling(msg, OSMO_CC_TYPE_UNKNOWN, OSMO_CC_PLAN_TELEPHONY, OSMO_CC_PRESENT_ALLOWED, OSMO_CC_SCREEN_USER_UNSCREENED, ui_local_id);
|
|
/* called number */
|
|
osmo_cc_add_ie_called(msg, OSMO_CC_TYPE_UNKNOWN, OSMO_CC_PLAN_TELEPHONY, ui_remote_id);
|
|
/* bearer capability */
|
|
osmo_cc_add_ie_bearer(msg, OSMO_CC_CODING_ITU_T, OSMO_CC_CAPABILITY_AUDIO, OSMO_CC_MODE_CIRCUIT);
|
|
/* sdp offer */
|
|
call->cc_session = osmo_cc_helper_audio_offer(call, codecs, down_audio, msg, 1);
|
|
if (!call->cc_session) {
|
|
PDEBUG(DTEL, DEBUG_NOTICE, "Failed to offer audio, call aborted.\n");
|
|
osmo_cc_free_msg(msg);
|
|
call_destroy(call);
|
|
} else {
|
|
/* create new call */
|
|
osmo_cc_call_t *cc_call = osmo_cc_call_new(&call->telephone_ep->cc_ep);
|
|
call->cc_callref = cc_call->callref;
|
|
/* send message to CC */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_OUT_SETUP);
|
|
}
|
|
}
|
|
}
|
|
memset(display, '.', UI_MAX_DIGITS);
|
|
memcpy(display, ui_remote_id, strlen(ui_remote_id));
|
|
display[UI_MAX_DIGITS] = '\0';
|
|
sprintf(text, "%s: %s (press digits 0..9 or d=dial)\r", call_state_name[(call) ? call->state : CALL_STATE_IDLE], display);
|
|
goto done;
|
|
}
|
|
|
|
if (c == 'h' || (c == 'd' && call->state == CALL_STATE_IN_DISCONNECT)) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Call hangup\n");
|
|
/* create osmo-cc message */
|
|
if (call->state == CALL_STATE_IN_SETUP)
|
|
release_reject_ind(call, OSMO_CC_MSG_REJ_IND, OSMO_CC_ISDN_CAUSE_NORM_CALL_CLEAR);
|
|
else
|
|
release_reject_ind(call, OSMO_CC_MSG_REL_IND, OSMO_CC_ISDN_CAUSE_NORM_CALL_CLEAR);
|
|
/* dial new number */
|
|
if (c == 'd') {
|
|
call = NULL;
|
|
goto dial_after_hangup;
|
|
}
|
|
goto done;
|
|
}
|
|
if (c == 'o' && call->state == CALL_STATE_IN_SETUP) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Acknowledge incoming call\n");
|
|
/* create osmo-cc message */
|
|
msg = osmo_cc_new_msg(OSMO_CC_MSG_SETUP_ACK_IND);
|
|
if (call->telephone_ep->early_audio && call->sdp) {
|
|
/* progress */
|
|
osmo_cc_add_ie_progress(msg, OSMO_CC_CODING_ITU_T, call->telephone_ep->serving_location, OSMO_CC_PROGRESS_INBAND_INFO_AVAILABLE);
|
|
/* sdp */
|
|
osmo_cc_add_ie_sdp(msg, call->sdp);
|
|
free((char *)call->sdp);
|
|
call->sdp = NULL;
|
|
}
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_IN_OVERLAP);
|
|
}
|
|
if (c == 'p' && (call->state == CALL_STATE_IN_SETUP || call->state == CALL_STATE_IN_OVERLAP)) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Proceeding incoming call\n");
|
|
/* create osmo-cc message */
|
|
msg = osmo_cc_new_msg(OSMO_CC_MSG_PROC_IND);
|
|
if (call->telephone_ep->early_audio && call->sdp) {
|
|
/* progress */
|
|
osmo_cc_add_ie_progress(msg, OSMO_CC_CODING_ITU_T, call->telephone_ep->serving_location, OSMO_CC_PROGRESS_INBAND_INFO_AVAILABLE);
|
|
/* sdp */
|
|
osmo_cc_add_ie_sdp(msg, call->sdp);
|
|
free((char *)call->sdp);
|
|
call->sdp = NULL;
|
|
}
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_IN_PROCEEDING);
|
|
}
|
|
if (c == 'a' && (call->state == CALL_STATE_IN_SETUP || call->state == CALL_STATE_IN_OVERLAP || call->state == CALL_STATE_IN_PROCEEDING)) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Alerting incoming call\n");
|
|
/* create osmo-cc message */
|
|
msg = osmo_cc_new_msg(OSMO_CC_MSG_ALERT_IND);
|
|
if (call->telephone_ep->early_audio && call->sdp) {
|
|
/* progress */
|
|
osmo_cc_add_ie_progress(msg, OSMO_CC_CODING_ITU_T, call->telephone_ep->serving_location, OSMO_CC_PROGRESS_INBAND_INFO_AVAILABLE);
|
|
/* sdp */
|
|
osmo_cc_add_ie_sdp(msg, call->sdp);
|
|
free((char *)call->sdp);
|
|
call->sdp = NULL;
|
|
}
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_IN_ALERTING);
|
|
}
|
|
if (c == 'c' && (call->state == CALL_STATE_IN_SETUP || call->state == CALL_STATE_IN_OVERLAP || call->state == CALL_STATE_IN_PROCEEDING || call->state == CALL_STATE_IN_ALERTING)) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Answer incoming call\n");
|
|
/* create osmo-cc message */
|
|
msg = osmo_cc_new_msg(OSMO_CC_MSG_SETUP_CNF);
|
|
/* sdp */
|
|
if (call->sdp) {
|
|
osmo_cc_add_ie_sdp(msg, call->sdp);
|
|
free((char *)call->sdp);
|
|
call->sdp = NULL;
|
|
}
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, msg);
|
|
/* change state */
|
|
call_new_state(call, CALL_STATE_CONNECT);
|
|
}
|
|
if (c > 0 && call->state == CALL_STATE_OUT_OVERLAP && strchr(ui_digits, c)) {
|
|
PDEBUG(DTEL, DEBUG_INFO, "Send digit %c\n", c);
|
|
char called[] = { c, '\0' };
|
|
/* create osmo-cc message */
|
|
msg = osmo_cc_new_msg(OSMO_CC_MSG_INFO_IND);
|
|
/* add dialing */
|
|
osmo_cc_add_ie_called(msg, OSMO_CC_TYPE_UNKNOWN, OSMO_CC_PLAN_TELEPHONY, called);
|
|
/* send message to osmo-cc */
|
|
osmo_cc_ll_msg(&call->telephone_ep->cc_ep, call->cc_callref, msg);
|
|
/* add to dial string */
|
|
append_string(ui_remote_id, sizeof(ui_remote_id), c);
|
|
}
|
|
|
|
/* NOTE: the state is from console view: a call towards CC is OUT and from CC is IN */
|
|
switch (call->state) {
|
|
case CALL_STATE_OUT_SETUP:
|
|
case CALL_STATE_OUT_PROCEEDING:
|
|
case CALL_STATE_OUT_ALERTING:
|
|
sprintf(text, "%s: %s (press h=hangup)\r", call_state_name[call->state], ui_remote_id);
|
|
break;
|
|
case CALL_STATE_OUT_OVERLAP:
|
|
sprintf(text, "%s: %s (press digits 0..9 h=hangup)\r", call_state_name[call->state], ui_remote_id);
|
|
break;
|
|
case CALL_STATE_CONNECT:
|
|
if (ui_remote_dialing[0])
|
|
sprintf(text, "%s: %s->%s (press h=hangup)\r", call_state_name[call->state], ui_remote_id, ui_remote_dialing);
|
|
else
|
|
sprintf(text, "%s: %s (press h=hangup)\r", call_state_name[call->state], ui_remote_id);
|
|
break;
|
|
case CALL_STATE_IN_DISCONNECT:
|
|
sprintf(text, "%s: %s (press h=hangup d=redial)\r", call_state_name[call->state], cause_name(ui_cause));
|
|
break;
|
|
case CALL_STATE_IN_SETUP:
|
|
sprintf(text, "%s: %s->%s (press o=overlap p=proceeding a=alerting c=connect h=hangup)\r", call_state_name[call->state], ui_remote_id, ui_remote_dialing);
|
|
break;
|
|
case CALL_STATE_IN_OVERLAP:
|
|
sprintf(text, "%s: %s->%s (press p=proceeding a=alerting c=connect h=hangup)\r", call_state_name[call->state], ui_remote_id, ui_remote_dialing);
|
|
break;
|
|
case CALL_STATE_IN_PROCEEDING:
|
|
sprintf(text, "%s: %s->%s (press a=alerting c=connect h=hangup)\r", call_state_name[call->state], ui_remote_id, ui_remote_dialing);
|
|
break;
|
|
case CALL_STATE_IN_ALERTING:
|
|
sprintf(text, "%s: %s->%s (press c=connect h=hangup)\r", call_state_name[call->state], ui_remote_id, ui_remote_dialing);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
done:
|
|
/* skip if nothing has changed */
|
|
len = strlen(text);
|
|
if (ui_len == len && !memcmp(ui_text, text, len))
|
|
return work;
|
|
clear_console_text();
|
|
ui_len = len;
|
|
memcpy(ui_text, text, len);
|
|
memset(ui_clear, ' ', len - 1);
|
|
ui_clear[len - 1] = '\r';
|
|
print_console_text();
|
|
fflush(stdout);
|
|
|
|
return work;
|
|
}
|
|
|