296 lines
7.5 KiB
C
296 lines
7.5 KiB
C
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/*
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*
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* Copyright (c) 2002, Smart Link Ltd.
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* Copyright (c) 2021, Aon plc
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. Neither the name of the Smart Link Ltd. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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*
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* modem_cmdline.c -- simple command line processor,
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* define config parameters.
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*
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* Author: Sasha K (sashak@smlink.com)
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*
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*
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include <modem.h>
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#include <modem_homolog.h>
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#include <modem_debug.h>
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#define PR_INFO(fmt...) fprintf(stderr, fmt )
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/* global config data */
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/* modem.c */
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extern const char *modem_default_country;
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/* modem_debug.c */
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extern unsigned int modem_debug_level;
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extern unsigned int modem_debug_logging;
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/* config parameters */
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const char *modem_dev_name = NULL;
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const char *modem_default_dev_name = "/dev/slamr0";
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const char *modem_alsa_dev_name = "modem:1";
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const char *modem_exec = NULL;
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unsigned int need_realtime = 0;
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#ifdef MODEM_CONFIG_RING_DETECTOR
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unsigned int ring_detector = 0;
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#endif
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unsigned int use_alsa = 0;
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const char *modem_group = "dialout";
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unsigned int use_short_buffer = 0;
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mode_t modem_perm = 0660;
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enum {
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OPT_HELP = 0,
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OPT_USAGE,
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OPT_VERSION,
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OPT_COUNTRY,
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OPT_COUNTRYLIST,
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OPT_ALSA,
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OPT_GROUP,
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OPT_PERM,
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#ifdef MODEM_CONFIG_RING_DETECTOR
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OPT_RINGDET,
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#endif
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OPT_USER,
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OPT_SHORTBUF,
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OPT_DEBUG,
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OPT_LOG,
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OPT_EXEC,
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OPT_LAST
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};
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static struct opt {
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int ch;
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const char *name;
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const char *desc;
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enum {NONE=0,MANDATORY,OPTIONAL} arg;
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enum {INTEGER,STRING} arg_type;
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const char *arg_val;
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unsigned found;
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} opt_list[] = {
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{'h',"help","this usage"},
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{'u',"usage","this usage"},
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{'v',"version","show version and exit"},
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{'c',"country","default modem country name",MANDATORY,STRING,"USA"},
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{ 0 ,"countrylist","show list of supported countries"},
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{'a',"alsa","ALSA mode (see README for howto)"},
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{'g',"group","Modem TTY group",MANDATORY,STRING,"dialout"},
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{'p',"perm","Modem TTY permission",MANDATORY,INTEGER,"0660"},
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#ifdef MODEM_CONFIG_RING_DETECTOR
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{'r',"ringdetector","with internal ring detector (software)"},
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#endif
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{'n',"nortpriority","run with regular priority"},
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{'s',"shortbuffer","use short buffer (4 periods length)"},
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{'d',"debug","debug level (developers only, for ./sl...)",OPTIONAL,INTEGER,"0"},
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{'l',"log","logging mode",OPTIONAL,INTEGER,"5"},
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{'e',"exec","path to external application that transmits audio over the socket (required)",MANDATORY,STRING,"./d-modem"},
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{}
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};
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static void usage(const char *prog_name)
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{
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struct opt *opt;
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PR_INFO("Usage: %s [option...] <device>\n"
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"Where 'device' is name of modem device (default `%s')\n"
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" and 'option' may be:\n", prog_name, modem_default_dev_name);
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for (opt = opt_list ; opt->name ; opt++ ) {
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int n = 0;
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if(opt->ch)
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n = PR_INFO(" -%c, ",opt->ch);
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else
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n = PR_INFO(" ");
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n += PR_INFO("--%s%s ",opt->name,opt->arg?"=VAL":"");
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n += PR_INFO("%*s%s",24-n,"",opt->desc);
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if(opt->arg) {
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n+= PR_INFO(" (default `%s')",opt->arg_val);
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}
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PR_INFO("\n");
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}
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exit(1);
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}
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static void opt_parse(int argc, char *argv[])
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{
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const char *prog_name;
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const char *dev_name = NULL;
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struct opt *opt;
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char *p, *arg;
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int found, i;
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prog_name = argv[0];
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for( i = 1 ; i < argc ; i++ ) {
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p = argv[i];
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if(*p != '-') {
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if(dev_name)
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usage(prog_name);
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dev_name = p;
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continue;
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}
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found = 0;
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arg = NULL;
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do { p++; } while( *p == '-' );
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for (opt = opt_list ; opt->name ; opt++ ) {
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if(!strncmp(p,opt->name,strlen(opt->name)) ||
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(opt->ch && *p == opt->ch) ) {
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char *q;
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if(!strncmp(p,opt->name,strlen(opt->name)))
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q = p + strlen(opt->name);
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else
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q = p + 1;
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if( *q == '\0' )
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found = 1;
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else if (*q == '=' && opt->arg ) {
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arg = q + 1;
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found = 1;
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}
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else if(isdigit(*q) && opt->arg ) {
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arg = q;
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found = 1;
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}
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}
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if ( !found )
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continue;
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if ( arg && !opt->arg )
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usage(prog_name);
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if (!arg && opt->arg &&
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(i < argc - 1 && *argv[i+1] != '-') &&
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(!opt->arg_type == INTEGER || isdigit(*argv[i+1])))
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arg = argv[++i];
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if(!arg && opt->arg == MANDATORY)
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usage(prog_name);
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opt->found++;
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if(opt->arg && arg)
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opt->arg_val = arg;
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break;
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}
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if(!found)
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usage(prog_name);
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}
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if(dev_name)
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modem_dev_name = dev_name;
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}
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void modem_cmdline(int argc, char *argv[])
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{
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const char *prog_name = argv[0];
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int val;
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opt_parse(argc,argv);
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if(opt_list[OPT_HELP].found ||
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opt_list[OPT_USAGE].found )
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usage(prog_name);
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if(opt_list[OPT_VERSION].found) {
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extern void modem_print_version();
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modem_print_version();
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exit(0);
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}
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if(opt_list[OPT_COUNTRYLIST].found) {
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const struct homolog_set *s ;
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for( s = homolog_set; s->name ; s++ ) {
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PR_INFO("%02x: %s\n",s->id,s->name);
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}
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exit(0);
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}
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if(opt_list[OPT_COUNTRY].found)
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modem_default_country = opt_list[OPT_COUNTRY].arg_val;
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if(opt_list[OPT_ALSA].found) {
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#ifndef SUPPORT_ALSA
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PR_INFO("ALSA support is not compiled in (see README for howto).\n");
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exit(1);
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#endif
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use_alsa = 1;
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}
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if(opt_list[OPT_GROUP].found)
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modem_group = opt_list[OPT_GROUP].arg_val;
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if(opt_list[OPT_PERM].found) {
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val = strtol(opt_list[OPT_PERM].arg_val,NULL,8);
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if (val <= 0)
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usage(prog_name);
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modem_perm = val;
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}
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#ifdef MODEM_CONFIG_RING_DETECTOR
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if(opt_list[OPT_RINGDET].found)
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ring_detector = 1;
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#endif
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if(opt_list[OPT_USER].found)
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need_realtime = 0;
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if(opt_list[OPT_SHORTBUF].found)
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use_short_buffer = 1;
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if(opt_list[OPT_DEBUG].found) {
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modem_debug_level = 1 ;
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if(opt_list[OPT_DEBUG].arg_val &&
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(val= strtol(opt_list[OPT_DEBUG].arg_val,NULL,0)) > 0 )
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modem_debug_level = val;
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}
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if(opt_list[OPT_LOG].found) {
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modem_debug_logging = 5;
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if(opt_list[OPT_LOG].arg_val &&
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(val= strtol(opt_list[OPT_LOG].arg_val,NULL,0)) > 0 )
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modem_debug_logging = val;
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}
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if(opt_list[OPT_EXEC].found) {
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modem_exec = opt_list[OPT_EXEC].arg_val;
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} else {
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usage(prog_name);
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}
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if(!modem_dev_name) {
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modem_dev_name = use_alsa ? modem_alsa_dev_name : modem_default_dev_name;
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}
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}
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