lcd4linux.git - lcd4linux Debian packaging

diff options

Diffstat (limited to '')

-rw-r--r--

1 files changed, 8 insertions, 3 deletions

/* $Id$ * $URL$ * * plugin for ISDN subsystem * * Copyright (C) 2003 Michael Reinelt <michael@reinelt.co.at> * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> * * Based on the old isdn client (isdn.c) which is * Copyright (C) 1999, 2000 Michael Reinelt <michael@reinelt.co.at> * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * exported functions: * * int plugin_init_isdn (void) * adds functions to access ISDN information * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <fcntl.h> #include <sys/ioctl.h> #include <sys/types.h> #ifdef HAVE_LINUX_ISDN_H #include <linux/isdn.h> #else #warning isdn.h not found. CPS support deactivated. #endif #include "debug.h" #include "plugin.h" #include "qprintf.h" #include "hash.h" typedef struct { unsigned long in; unsigned long out; } CPS; static HASH ISDN_INFO; static HASH ISDN_CPS; static void hash_put_info(const char *name, const int channel, const char *val) { char key[16]; qprintf(key, sizeof(key), "%s[%d]", name, channel); hash_put(&ISDN_INFO, key, val); } static int parse_isdninfo(void) { int age; FILE *stream; long flags; /* reread every 10 msec only */ age = hash_age(&ISDN_INFO, NULL); if (age > 0 && age <= 10) return 0; /* open file */ stream = fopen("/dev/isdninfo", "r"); if (stream == NULL) { error("open(/dev/isdninfo) failed: %s", strerror(errno)); return -1; } /* get flags */ flags = fcntl(fileno(stream), F_GETFL); if (flags < 0) { error("fcntl(/dev/isdninfo, F_GETFL) failed: %s", strerror(errno)); return -1; } /* set O_NONBLOCK */ if (fcntl(fileno(stream), F_SETFL, flags | O_NONBLOCK) < 0) { error("fcntl(/dev/isdninfo, F_SETFL, O_NONBLOCK) failed: %s", strerror(errno)); return -1; } while (!feof(stream)) { char buffer[4096]; char *beg, *end; if (fgets(buffer, sizeof(buffer), stream) == NULL) break; beg = strchr(buffer, ':'); if (beg != NULL) { char delim[] = " \t\n"; int i = 0; *beg++ = '\0'; while (*beg && strchr(delim, *beg)) beg++; while (beg && *beg) { if ((end = strpbrk(beg, delim))) *end = '\0'; hash_put_info(buffer, i, beg); beg = end ? end + 1 : NULL; while (*beg && strchr(delim, *beg)) beg++; i++; } } else { error("Huh? no colon found in <%s>", buffer); } } fclose(stream); return 0; } static void my_isdn_info(RESULT * result, RESULT * arg1, RESULT * arg2) { char key[16], *val; if (parse_isdninfo() < 0) { SetResult(&result, R_STRING, ""); return; } qprintf(key, sizeof(key), "%s[%d]", R2S(arg1), (int) R2N(arg2)); val = hash_get(&ISDN_INFO, key, NULL); if (val == NULL) val = ""; SetResult(&result, R_STRING, val); } #ifdef HAVE_LINUX_ISDN_H static void hash_put_cps(const int channel, const CPS * cps) { char key[16], val[16]; qprintf(key, sizeof(key), channel < 0 ? "i" : "i%d", channel); qprintf(val, sizeof(val), "%u", cps->in); hash_put_delta(&ISDN_CPS, key, val); qprintf(key, sizeof(key), channel < 0 ? "o" : "o%d", channel); qprintf(val, sizeof(val), "%u", cps->out); hash_put_delta(&ISDN_CPS, key, val); } static int get_cps(void) { int age, i; static int fd = -2; CPS cps[ISDN_MAX_CHANNELS]; CPS sum; /* reread every 10 msec only */ age = hash_age(&ISDN_CPS, NULL); if (age > 0 && age <= 10) return 0; if (fd == -1) return -1; if (fd == -2) { fd = open("/dev/isdninfo", O_RDONLY | O_NDELAY); if (fd == -1) { error("open(/dev/isdninfo) failed: %s", strerror(errno)); return -1; } } if (ioctl(fd, IIOCGETCPS, &cps)) { error("ioctl(IIOCGETCPS) failed: %s", strerror(errno)); fd = -1; return -1; } sum.in = 0; sum.out = 0; for (i = 0; i < ISDN_MAX_CHANNELS; i++) { sum.in += cps[i].in; sum.out += cps[i].out; hash_put_cps(i, &cps[i]); } hash_put_cps(-1, &sum); return 0; } static void my_isdn_cps(RESULT * result, RESULT * arg1, RESULT * arg2) { double value; if (get_cps() < 0) { SetResult(&result, R_STRING, ""); return; } value = hash_get_delta(&ISDN_CPS, R2S(arg1), NULL, R2N(arg2)); SetResult(&result, R_NUMBER, &value); } #endif int plugin_init_isdn(void) { hash_create(&ISDN_INFO); hash_create(&ISDN_CPS); AddFunction("isdn::info", 2, my_isdn_info); #ifdef HAVE_LINUX_ISDN_H AddFunction("isdn::cps", 2, my_isdn_cps); #endif return 0; } void plugin_exit_isdn(void) { hash_destroy(&ISDN_INFO); hash_destroy(&ISDN_CPS); }


context:
space:
mode: