347 lines
10 KiB
C
347 lines
10 KiB
C
/* osmo-cc-ss5-endpoint main
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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 <signal.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 <termios.h>
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#include "../libdebug/debug.h"
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#include "../liboptions/options.h"
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#include "../libg711/g711.h"
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#include "ss5.h"
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#include "display.h"
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ss5_endpoint_t *ss5_ep_sunset = NULL, *ss5_ep_sunrise = NULL;
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int num_kanal = 2;
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int endpoints = 1;
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int links = 0;
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int prevent_blueboxing = 0;
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int suppress_disconnect = 1;
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int crosstalk = 1;
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int delay_ms = 300;
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int comfort_noise = 1;
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double sense_db = 5;
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#define MAX_CC_ARGS 1024
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static int cc_argc_sunset, cc_argc_sunrise = 0;
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static const char *cc_argv_sunset[MAX_CC_ARGS], *cc_argv_sunrise[MAX_CC_ARGS];
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static void print_usage(const char *app)
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{
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printf("Usage: %s [--port <misdn port>] [--nt] [<options>]\n", app);
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printf("This will create pairs of SS5 channels that are bridged together, so that\n");
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printf("calls from one link to the other can be made using SS5. The a bluebox can be\n");
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printf("used to play with it.\n");
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printf("If one endpoint is used (default), its name is 'sunset' and each pair of\n");
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printf("channels are bridged together. If two endpoints are used, their names are\n");
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printf("'sunset' and 'sunrise' and same channel index of both endpoints are bridged\n");
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printf("together.\n");
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}
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static void print_help()
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{
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/* - - */
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printf(" -h --help\n");
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printf(" This help\n");
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printf(" -v --verbose <level> | <level>,<category>[,<category>[,...]] | list\n");
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printf(" Use 'list' to get a list of all levels and categories\n");
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printf(" Verbose level: digit of debug level (default = '%d')\n", debuglevel);
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printf(" Verbose level+category: level digit followed by one or more categories\n");
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printf(" -> If no category is specified, all categories are selected\n");
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printf(" -2 --two\n");
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printf(" Create two Osmo-CC endpoints instead of one.\n");
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printf(" -c --channels\n");
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printf(" Give number of channels per endpoint. If you use a single endpoint,\n");
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printf(" you must define an even number. By default this is '2' for one\n");
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printf(" endpoint and '1' for two endpoints.\n");
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printf(" -s --suppress-disconnect 1 | 0\n");
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printf(" When a 'busy-flash' or 'release-guard' is received a disconnect is\n");
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printf(" forwarded towards OsmoCC. Set to 1 to suppress this. (Default is %d.)\n", suppress_disconnect);
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printf(" -p --prevent-blueboxing 1 | 0\n");
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printf(" Prevent blueboxing by making 'release-guard' 200 ms minimum length.\n");
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printf(" -x --crosstalk 1 | 0\n");
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printf(" Enable or disable some minor crosstalk. This allows you to hear\n");
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printf(" transmitted tones at a low volume. (Default is %d.).\n", crosstalk);
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printf(" -d --delay <ms> | 0\n");
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printf(" Add one-way delay to the connection between two SS5 links. This allows\n");
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printf(" to hear 'acknowlege' tones delayed. (Default is %d ms.).\n", delay_ms);
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printf(" -n --comfort-noise 1 | 0\n");
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printf(" Add comfort noise whenever there is no audio from the remote link\n");
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printf(" (before or after call). (Default is %d ms.).\n", comfort_noise);
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printf(" --sense 0 | <db>\n");
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printf(" Change sensitivity (level) of tone detector. A bluebox must not be\n");
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printf(" that loud. (Default is %.0f dB.).\n", sense_db);
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printf(" -C --cc \"<osmo-cc arg>\" [--cc ...]\n");
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printf(" --cc2 \"<osmo-cc arg>\" [--cc2 ...]\n");
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printf(" Pass arguments to Osmo-CC endpoint. Use '-cc help' for description.\n");
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printf(" If you select two endpoints, use '--cc2' to pass arguments to the\n");
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printf(" second endpoint.\n");
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}
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#define OPT_SENSE 256
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#define OPT_CC2 257
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static void add_options(void)
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{
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option_add('h', "help", 0);
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option_add('v', "verbose", 1);
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option_add('2', "two", 0);
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option_add('c', "channels", 1);
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option_add('s', "suppress-disconnect", 1);
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option_add('p', "prevent-blueboxing", 1);
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option_add('x', "crosstalk", 1);
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option_add('d', "delay", 1);
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option_add('n', "comfort-noise", 1);
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option_add(OPT_SENSE, "sense", 1);
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option_add('C', "cc", 1);
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option_add(OPT_CC2, "cc2", 1);
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}
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static int handle_options(int short_option, int argi, char **argv)
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{
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int rc;
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switch (short_option) {
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case 'h':
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print_usage(argv[0]);
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print_help();
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return 0;
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case 'v':
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if (!strcasecmp(argv[argi], "list")) {
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debug_list_cat();
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return 0;
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}
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rc = parse_debug_opt(argv[argi]);
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if (rc < 0) {
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fprintf(stderr, "Failed to parse debug option, please use -h for help.\n");
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return rc;
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}
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break;
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case '2':
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endpoints = 2;
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break;
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case 'c':
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links = atoi(argv[argi]);
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break;
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case 's':
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suppress_disconnect = atoi(argv[argi]);
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break;
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case 'p':
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prevent_blueboxing = atoi(argv[argi]);
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break;
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case 'x':
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crosstalk = atoi(argv[argi]);
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break;
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case 'd':
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delay_ms = atoi(argv[argi]);
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break;
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case 'n':
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comfort_noise = atoi(argv[argi]);
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break;
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case OPT_SENSE:
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sense_db = (double)atoi(argv[argi]);
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break;
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case 'C':
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if (!strcasecmp(argv[argi], "help")) {
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osmo_cc_help();
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return 0;
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}
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if (cc_argc_sunset == MAX_CC_ARGS) {
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fprintf(stderr, "Too many osmo-cc args!\n");
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break;
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}
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cc_argv_sunset[cc_argc_sunset++] = strdup(argv[argi]);
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break;
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case OPT_CC2:
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if (!strcasecmp(argv[argi], "help")) {
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osmo_cc_help();
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return 0;
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}
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if (cc_argc_sunrise == MAX_CC_ARGS) {
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fprintf(stderr, "Too many osmo-cc args!\n");
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break;
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}
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cc_argv_sunrise[cc_argc_sunrise++] = strdup(argv[argi]);
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break;
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default:
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return -EINVAL;
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}
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return 1;
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}
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static int quit = 0;
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void sighandler(int sigset)
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{
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if (sigset == SIGHUP || sigset == SIGPIPE)
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return;
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fprintf(stderr, "\nSignal %d received.\n", sigset);
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quit = 1;
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}
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static int get_char()
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{
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struct timeval tv = {0, 0};
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fd_set fds;
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char c = 0;
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int __attribute__((__unused__)) rc;
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FD_ZERO(&fds);
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FD_SET(0, &fds);
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select(0+1, &fds, NULL, NULL, &tv);
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if (FD_ISSET(0, &fds)) {
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rc = read(0, &c, 1);
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return c;
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} else
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return -1;
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}
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int main(int argc, char *argv[])
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{
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int argi, rc;
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struct termios term, term_orig;
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double now, last_time_call = 0.0;
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int c;
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/* init MF */
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mf_init(0);
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/* init codecs (for recording) */
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g711_init();
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cc_argv_sunset[cc_argc_sunset++] = strdup("remote auto");
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cc_argv_sunrise[cc_argc_sunrise++] = strdup("remote auto");
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/* handle options / config file */
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add_options();
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rc = options_config_file("~/.osmocom/ss5/ss5.conf", handle_options);
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if (rc < 0)
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return 0;
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argi = options_command_line(argc, argv, handle_options);
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if (argi <= 0)
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return argi;
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/* check links (per endpoint) */
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if (!links)
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links = (endpoints == 2) ? 1 : 2;
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if (links == 1 && (endpoints % 1)) {
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PDEBUG(DSS5, DEBUG_ERROR, "You must define an even number of channels on a single endpoint!\n");
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goto error;
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}
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/* create sunset and (optionally) sunrise */
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ss5_ep_sunset = ss5_ep_create("sunset", links, prevent_blueboxing, crosstalk, delay_ms, comfort_noise, suppress_disconnect, sense_db);
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if (!ss5_ep_sunset)
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goto error;
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rc = osmo_cc_new(&ss5_ep_sunset->cc_ep, OSMO_CC_VERSION, "sunset", OSMO_CC_LOCATION_BEYOND_INTERWORKING, cc_message, NULL, ss5_ep_sunset, cc_argc_sunset, cc_argv_sunset);
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if (rc < 0)
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goto error;
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if (endpoints == 2) {
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ss5_ep_sunrise = ss5_ep_create("sunrise", links, prevent_blueboxing, crosstalk, delay_ms, comfort_noise, suppress_disconnect, sense_db);
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if (!ss5_ep_sunrise)
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goto error;
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rc = osmo_cc_new(&ss5_ep_sunrise->cc_ep, OSMO_CC_VERSION, "sunrise", OSMO_CC_LOCATION_BEYOND_INTERWORKING, cc_message, NULL, ss5_ep_sunrise, cc_argc_sunrise, cc_argv_sunrise);
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if (rc < 0)
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goto error;
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PDEBUG(DSS5, DEBUG_NOTICE, "Created endpoints 'sunset' and 'sunrise' with %d links that connect these endpoints.\n", links);
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} else
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PDEBUG(DSS5, DEBUG_NOTICE, "Created endpoint 'sunset' with %d links, each pair connected.\n", links);
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refresh_status();
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/* prepare terminal */
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tcgetattr(0, &term_orig);
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term = term_orig;
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term.c_lflag &= ~(ISIG|ICANON|ECHO);
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term.c_cc[VMIN]=1;
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term.c_cc[VTIME]=2;
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tcsetattr(0, TCSANOW, &term);
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/* catch signals */
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signal(SIGINT, sighandler);
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signal(SIGHUP, sighandler);
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signal(SIGTERM, sighandler);
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signal(SIGPIPE, sighandler);
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while (!quit) {
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int w;
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/* send clock calls to play/record audio files */
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now = get_time();
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if (now - last_time_call >= 0.1)
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last_time_call = now;
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if (now - last_time_call >= 0.020) {
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last_time_call += 0.020;
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/* call clock every 20ms */
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audio_clock(ss5_ep_sunset, ss5_ep_sunrise, 160);
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}
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process_timer();
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do {
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w = 0;
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w |= osmo_cc_handle();
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} while (w);
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usleep(1000);
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/* process keyboard input */
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next_char:
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c = get_char();
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switch (c) {
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case 3:
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printf("CTRL+c received, quitting!\n");
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quit = 1;
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goto next_char;
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case 'c':
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display_status_on(-1);
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goto next_char;
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}
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}
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/* reset signals */
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signal(SIGINT, SIG_DFL);
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signal(SIGTSTP, SIG_DFL);
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signal(SIGHUP, SIG_DFL);
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signal(SIGTERM, SIG_DFL);
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signal(SIGPIPE, SIG_DFL);
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/* reset terminal */
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tcsetattr(0, TCSANOW, &term_orig);
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error:
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/* destroy endpoints */
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if (ss5_ep_sunset) {
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osmo_cc_delete(&ss5_ep_sunset->cc_ep);
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ss5_ep_destroy(ss5_ep_sunset);
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}
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if (ss5_ep_sunrise) {
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osmo_cc_delete(&ss5_ep_sunrise->cc_ep);
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ss5_ep_destroy(ss5_ep_sunrise);
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}
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/* exit MF */
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mf_exit();
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return 0;
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}
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