Sun, 25 May 2014 16:39:54 +0200
Log allways
/***************************************************************************** * Copyright (C) 2008-2014 * * Michiel Broek <mbroek at mbse dot eu> * * This file is part of the mbsePi-apps * * This 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. * * mbsePi-apps 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 EC-65K; see the file COPYING. If not, write to the Free * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *****************************************************************************/ #include "../lib/mbselib.h" #include "server.h" #include "thermferm.h" extern bool my_shutdown; extern bool debug; extern int lcdHandle; extern unsigned char lcdbuf[MAX_LCDS][20][4]; extern sys_config Config; int s; /* connected socket */ int ls; /* listen socket */ struct sockaddr_in myaddr_in; /* for local socket address */ struct sockaddr_in peeraddr_in; /* for peer socket address */ struct hostent *hp; #define SS_BUFSIZE 1024 #define SS_TIMEOUT 300 unsigned char cs_mode = 'o'; /* o = Off, f = fridge, b = beer, p = profile-run */ float cs_beerSet = 20.0; float cs_fridgeSet = 20.0; float cs_heatEstimator = 0.2; float cs_coolEstimator = 5; unsigned char cc_tempFormat = 'C'; float cc_tempSetMin = 1.0; float cc_tempSetMax = 30.0; float cc_idleRangeH = 1.000; float cc_idleRangeL = -1.000; float cv_beerDiff = 0.0; void defaultControlSettings(void) { cs_mode = 'o'; /* o = Off, f = fridge, b = beer, p = profile-run */ cs_beerSet = 20.0; cs_fridgeSet = 20.0; cs_heatEstimator = 0.2; cs_coolEstimator = 5; } void defaultControlConstants(void) { cc_tempFormat = 'C'; cc_tempSetMin = 1.0; cc_tempSetMax = 30.0; cc_idleRangeH = 1.000; cc_idleRangeL = -1.000; } /* * Send message to client */ int srv_send(const char *format, ...) { char out[SS_BUFSIZE]; va_list va_ptr; if (s == -1) return -1; va_start(va_ptr, format); vsnprintf(out, SS_BUFSIZE-1, format, va_ptr); va_end(va_ptr); if (debug) { syslog(LOG_NOTICE, "send: \"%s\"", out); fprintf(stdout, "send: \"%s\"\n", out); } if (send(s, out, strlen(out), 0) != strlen(out)) { syslog(LOG_NOTICE, "srv_send failed"); return -1; } if (send(s, (char *)"\r\n", 2, 0) != 2) { syslog(LOG_NOTICE, "srv_send failed"); return -1; } return 0; } void cmd_die(int onsig) { syslog(LOG_NOTICE, "Server process die on signal %d", onsig); close(s); exit(0); } void cmd_server(void) { char *inp, *hostname, buf[SS_BUFSIZE], obuf[SS_BUFSIZE]; int i, rc, rlen; socklen_t fromlen; float newtemp; hp = gethostbyaddr ((char *) &peeraddr_in.sin_addr, sizeof(struct in_addr), peeraddr_in.sin_family); if (hp == NULL) { hostname = inet_ntoa(peeraddr_in.sin_addr); } else { hostname = hp->h_name; } if (debug) { syslog(LOG_NOTICE, "Start new client connection from %s port %u", hostname, ntohs(peeraddr_in.sin_port)); fprintf(stdout, "Start new client connection from %s port %u\n", hostname, ntohs(peeraddr_in.sin_port)); } memset((char *)&buf, 0, SS_BUFSIZE); fromlen = sizeof(peeraddr_in); rlen = recvfrom(s, buf, sizeof(buf) -1, 0, (struct sockaddr *)&peeraddr_in, &fromlen); if (rlen == -1) { syslog(LOG_NOTICE, "recvfrom(): %s", strerror(errno)); } else { for (i = 0; i < strlen(buf); i++) { if (buf[i] == '\n') buf[i] = '\0'; if (buf[i] == '\r') buf[i] = '\0'; } if (strlen(buf)) { if (debug) { syslog(LOG_NOTICE, "recv: \"%s\"", buf); fprintf(stdout, "recv: \"%s\"\n", buf); } /* * Process commands from the client */ if (strncmp(buf, "ack", 3) == 0) { srv_send((char *)"ack"); } else if (strncmp(buf, "lcd", 3) == 0) { sprintf(obuf, "[\" \", \" \", \" \", \" \"]"); for (i = 0; i < 20; i++) { obuf[i+2] = lcdbuf[lcdHandle][i][0]; obuf[i+26] = lcdbuf[lcdHandle][i][1]; obuf[i+50] = lcdbuf[lcdHandle][i][2]; obuf[i+74] = lcdbuf[lcdHandle][i][3]; } srv_send(obuf); } else if (strncmp(buf, "getMode", 7) == 0) { srv_send("%c", cs_mode); } else if (strncmp(buf, "getFridge", 9) == 0) { srv_send("%.1f", cs_fridgeSet); } else if (strncmp(buf, "getBeer", 7) == 0) { srv_send("%.1f", cs_beerSet); } else if (strncmp(buf, "getControlConstants", 19) == 0) { srv_send("{ \"tempFormat\":\"%c\", \"tempSetMin\":%.1f, \"tempSetMax\":%.1f, \"idleRangeH\":%.3f, \"idleRangeL\":%.3f }", cc_tempFormat, cc_tempSetMin, cc_tempSetMax, cc_idleRangeH, cc_idleRangeL ); } else if (strncmp(buf, "getControlSettings", 18) == 0) { srv_send("{ \"mode\":\"%c\", \"beerSet\":%.1f, \"fridgeSet\":%.1f, \"heatEstimator\":%.1f, \"coolEstimator\":%.1f }", cs_mode, cs_beerSet, cs_fridgeSet, cs_heatEstimator, cs_coolEstimator); } else if (strncmp(buf, "getControlVariables", 19) == 0) { srv_send("{ \"beerDiff\":%.2f }", cv_beerDiff); } else if (strncmp(buf, "loadDefaultControlSettings", 26) == 0) { defaultControlSettings(); srv_send("ack"); } else if (strncmp(buf, "loadDefaultControlConstants", 27) == 0) { defaultControlConstants(); srv_send("ack"); } else if (strncmp(buf, "setBeer=", 8) == 0) { inp = xstrcpy(buf+8); rc = sscanf(inp, "%f", &newtemp); if (debug) fprintf(stdout, "new temp from %s, %.1f, rc=%d\n", inp, newtemp, rc); if (rc == 1) { srv_send("ack"); cs_mode = 'b'; cs_beerSet = newtemp; } else { srv_send("err"); } free(inp); } else if (strncmp(buf, "setFridge=", 10) == 0) { inp = xstrcpy(buf+10); rc = sscanf(inp, "%f", &newtemp); if (debug) fprintf(stdout, "new temp from %s, %.1f, rc=%d\n", inp, newtemp, rc); if (rc == 1) { srv_send("ack"); cs_mode = 'f'; cs_fridgeSet = newtemp; } else { srv_send("err"); } free(inp); } else if (strncmp(buf, "setOff", 6) == 0) { if (debug) fprintf(stdout, "temperature control disabled\n"); cs_mode = 'o'; srv_send("ack"); } else { if (debug) fprintf(stdout, "unknown command \"%s\"\n", buf); srv_send((char *)"ERR"); } } } if (debug) { syslog(LOG_NOTICE, "End connection from %s port %u", hostname, ntohs(peeraddr_in.sin_port)); fprintf(stdout, "End connection from %s port %u\n", hostname, ntohs(peeraddr_in.sin_port)); } close(s); } PI_THREAD (my_server_loop) { socklen_t addrlen; int optval = 1; syslog(LOG_NOTICE, "Thread my_server_loop started"); if (debug) fprintf(stdout, "Thread my_server_loop started\n"); memset((char *)&myaddr_in, 0, sizeof(struct sockaddr_in)); memset((char *)&peeraddr_in, 0, sizeof(struct sockaddr_in)); myaddr_in.sin_family = AF_INET; myaddr_in.sin_addr.s_addr = INADDR_ANY; myaddr_in.sin_port = htons(Config.my_port); ls = socket(AF_INET, SOCK_STREAM, 0); if (ls == -1) { syslog(LOG_NOTICE, "Can't create listen socket: %s", strerror(errno)); fprintf(stderr, "Can't create listen socket: %s\n", strerror(errno)); return 0; } if (setsockopt(ls, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)) == -1) { syslog(LOG_NOTICE, "Can't setsockopt SO_KEEPALIVE socket: %s", strerror(errno)); close(ls); return 0; } if (setsockopt(ls, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) == -1) { syslog(LOG_NOTICE, "Can't setsockopt SO_REUSEADDR socket: %s", strerror(errno)); close(ls); return NULL; } if (bind(ls, (struct sockaddr *)&myaddr_in, sizeof(struct sockaddr_in)) == -1) { syslog(LOG_NOTICE, "Can't bind to listen socket: %s", strerror(errno)); close(ls); return NULL; } if (listen(ls, 5) == -1) { syslog(LOG_NOTICE, "Can't listen on listen socket: %s", strerror(errno)); close(ls); return NULL; } syslog(LOG_NOTICE, "listen socket created %d", ls); if (debug) fprintf(stdout, "listen socket created %d\n", ls); /* * Loop forever until the external shutdown variable is set. */ for (;;) { addrlen = sizeof(struct sockaddr_in); /* * This call will block until a new connection * arrives. Then it will return the address of * the connecting peer, and a new socket * descriptor, s, for that connection. */ s = accept(ls, (struct sockaddr *)&peeraddr_in, &addrlen); if (s == -1) { syslog(LOG_NOTICE, "my_server_loop accept failed %s", strerror(errno)); if (debug) fprintf(stdout, "my_server_loop accept failed %s\n", strerror(errno)); return 0; } cmd_server(); if (my_shutdown) { syslog(LOG_NOTICE, "Thread my_server_loop stopped"); if (debug) fprintf(stdout, "Thread my_server_loop stopped\n"); return 0; } } }