Working on sensor-checking
git-svn-id: file:///home/jan/tmp/wetterstation/trunk@51 dd492736-c11a-0410-ad51-8c26713eaf7f
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losinshi
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/*
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checksensor.c -- Part of the weatherdeamon
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Copyright (C) 2006 Jan Losinski
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: process.c v 1.00 11 Aug 2006 losinski $
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*/
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#include <stdlib.h> /* EXIT_SUCCESS */
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#include <errno.h>
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#include <unistd.h> /* STDOUT_FILENO */
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <postgresql/libpq-fe.h>
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#include "definitions.h"
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#include "config.h"
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#include "checksensor.h"
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#define BUFFSIZE 1024
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/* Variablen ---------------------------------------------------------- */
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w_opts global_opts;
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static PGconn *connection = NULL;
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static char *conn_string = NULL;
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/* Funktionen ----------------------------------------------------------*/
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static void clean();
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static void exit_sig_handler(int);
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/* Implementierungen ---------------------------------------------------*/
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static void generate_conn_string(){
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if(conn_string == NULL){
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conn_string = malloc(sizeof(char)*BUFFSIZE);
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snprintf(conn_string, BUFFSIZE, "host=%s dbname=%s user=%s password=%s", global_opts.pg_host, global_opts.pg_database, global_opts.pg_user, global_opts.pg_pass);
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}
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}
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static PGconn *pg_check_connect(char *conn_string){
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PGconn *conn = PQconnectdb(conn_string); /* Connection aufbauen */
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if(PQstatus(conn) != CONNECTION_OK){
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DEBUGOUT2("\nFehler beim Aufbau der Datenbankverbindung\n%s\n", PQerrorMessage(conn));
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exit_error(ERROR_MAKECONN);
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}
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DEBUGOUT1("Verbindung hergestellt \n");
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return conn;
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}
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static PGresult *pg_check_exec(PGconn *conn, char *query){
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PGresult *res;
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res = PQexec(conn, query);
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if(!res || PQresultStatus(res) != PGRES_TUPLES_OK){
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DEBUGOUT2("Fehler beim exec: %s\n", query);
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exit_error(ERROR_QUERY);
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} else {
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DEBUGOUT2("Query: '%s' ausgeführt\n", query);
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}
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return res;
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}
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static void get_sensors_from_db(){
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int id_field;
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int i;
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sens_id_list_ptr new_id, temp_id = NULL;
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connection = pg_check_connect(conn_string);
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PGresult *res = pg_check_exec(connection, "select id from sensoren");
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id_field = PQfnumber(res, "id");
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for (i = 0; i < PQntuples(res); i++){
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new_id = malloc(sizeof(sensor_id));
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new_id->id = atoi(PQgetvalue(res, i, id_field));
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if (temp_id == NULL){
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temp_id = new_id;
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global_opts.sens_id_list = temp_id;
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} else {
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temp_id->next = new_id;
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temp_id = temp_id->next;
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}
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DEBUGOUT2("add id: (%d)\n", new_id->id);
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}
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}
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/* Mainfkt. und diverse andere Funktionen zum beenden des Programmes ---*/
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/* Main-Funktion */
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int main(int argc, char *argv[]){
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/* errno 0 setzen */
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errno = 0;
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DEBUGOUT1("Programm gestartet\n");
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/* Signal-Handling zum Abbrechen ses Progammes */
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if(signal(SIGABRT, exit_sig_handler) == SIG_ERR)
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exit_error(ERROR_SEIINST);
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DEBUGOUT1("Signalhandler zum beenden per SIGABRT installiert\n");
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if(signal(SIGINT, exit_sig_handler) == SIG_ERR)
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exit_error(ERROR_SEIINST);
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DEBUGOUT1("Signalhandler zum beenden per SIGINT installiert\n");
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if(signal(SIGQUIT, exit_sig_handler) == SIG_ERR)
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exit_error(ERROR_SEIINST);
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DEBUGOUT1("Signalhandler zum beenden per SIGQUIT installiert\n");
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if(signal(SIGTERM, exit_sig_handler) == SIG_ERR)
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exit_error(ERROR_SEIINST);
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DEBUGOUT1("Signalhandler zum beenden per SIGTERM installiert\n");
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read_config(DEFAULT_CONFIG_FILE,1);
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/* Debug-Ausgaben, um zu sehen, ob die Optionen richtig gesetzt werden */
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DEBUGOUT1("\nPostgres:\n");
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DEBUGOUT2(" Host: = %s\n",global_opts.pg_host);
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DEBUGOUT2(" User: = %s\n",global_opts.pg_user);
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DEBUGOUT2(" Pass: = %s\n",global_opts.pg_pass);
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DEBUGOUT2(" Datenbank = %s\n",global_opts.pg_database);
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generate_conn_string();
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get_sensors_from_db();
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clean();
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return EXIT_SUCCESS;
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}
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/* Diese Funktion beendet das Programm mit einer Fehlermeldung. */
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void exit_error(char* err){
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DEBUGOUT1("\nEtwas unschoenes ist passiert\n");
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clean();
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if(errno != 0){
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perror("Fehler");
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}
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write(STDOUT_FILENO, err, strlen(err));
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exit(1);
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}
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/* Wird bei Beendigungssignalen ausgefuehrt */
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static void exit_sig_handler(int signr){
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#ifdef DEBUG
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DEBUGOUT1("\n");
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switch (signr){
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case SIGABRT:
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DEBUGOUT1("SIGABRT Interupt erhalten!\n");
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case SIGTERM:
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DEBUGOUT1("SIGTERM Interupt erhalten!\n");
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case SIGQUIT:
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DEBUGOUT1("SIGQUIT Interupt erhalten!\n");
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case SIGINT:
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DEBUGOUT1("SIGINT Interupt erhalten!\n");
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}
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#endif
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clean();
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DEBUGOUT1("Beende Programm...\n");
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exit(0);
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}
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/* Aufraumen ausfuehren */
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static void clean(){
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DEBUGOUT1("\nRaeume auf...\n");
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if(connection != NULL)
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PQfinish(connection);
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}
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@ -0,0 +1,63 @@
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/*
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main.h -- Part of the weatherdeamon
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Copyright (C) 2006 Jan Losinski
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "mailer.h"
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/* Datenstrukturen --------------------------------------------------------*/
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typedef struct sens_id_list *sens_id_list_ptr;
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typedef struct sens_id_list {
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sens_id_list_ptr next;
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int id;
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} sensor_id;
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typedef struct address_t *mail_list_ptr;
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/* Optionen */
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typedef struct {
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int *interval; /* Das Interval, in dem ein Sensor zuletzt gesendet haben sollte */
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mail_list_ptr address_list; /* Liste der Ids der Sensoren, die ueberprueft werden sollen */
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sens_id_list_ptr sens_id_list; /* Liste der Mail-Addressen, die benachichtigt werden sollen wenn was ist */
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char id_from_db; /* Flag, ob die Id's aus der Datenbank gelesen werden sollen */
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char *pg_host; /* Postgres-Host */
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char *pg_user; /* Postgres-Username */
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char *pg_pass; /* Postgres-Password */
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char *pg_database; /* Postgres-Datenbank */
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char *mail_host;
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int mail_port;
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char mail_ssl;
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char mail_auth;
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char *mail_auth_user;
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char *mail_auth_pass;
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} w_opts;
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/* Funktionen -------------------------------------------------------------*/
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/* Programm mit einem Fatalem Fehler beenden.
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* Argument: Fehlermeldung */
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void exit_error(char*);
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/* Variablen --------------------------------------------------------------*/
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extern w_opts global_opts;
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@ -31,7 +31,7 @@
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#include "config.h"
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#include "definitions.h"
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#include "main.h"
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#include "checksensor.h"
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//#include "mailer.h"
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@ -49,15 +49,15 @@ static const struct config_keyword keywords[] = {
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/* keyword handler variable address default */
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{"checkinterval", read_int, &(global_opts.interval), DEFAULT_CHECK_INTERVAL},
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{"sensorid_from_db", read_yn, &(global_opts.id_from_db), "yes"},
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{"sensorid", add_sens_id, &(global_opts.sens_id_list), NULL},
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{"adminaddress", add_address, &(global_opts.address_list), NULL},
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{"sensorid", add_sens_id, &(global_opts.sens_id_list), ""},
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{"adminaddress", add_address, &(global_opts.address_list), ""},
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{"mail_host", read_str, &(global_opts.mail_host), NULL},
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{"mail_port", read_int, &(global_opts.mail_port), NULL},
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{"mail_use_ssl", read_yn, &(global_opts.mail_ssl), NULL},
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{"mail_use_auth", read_yn, &(global_opts.mail_auth), NULL},
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{"mail_auth_user", read_str, &(global_opts.mail_auth_user), NULL},
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{"mail_auth_pass", read_str, &(global_opts.mail_auth_pass), NULL},
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{"mail_host", read_str, &(global_opts.mail_host), ""},
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{"mail_port", read_int, &(global_opts.mail_port), ""},
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{"mail_use_ssl", read_yn, &(global_opts.mail_ssl), ""},
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{"mail_use_auth", read_yn, &(global_opts.mail_auth), ""},
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{"mail_auth_user", read_str, &(global_opts.mail_auth_user), ""},
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{"mail_auth_pass", read_str, &(global_opts.mail_auth_pass), ""},
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{"pg_host", read_str, &(global_opts.pg_host), DEFAULT_PG_HOST},
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{"pg_user", read_str, &(global_opts.pg_user), DEFAULT_PG_USER},
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@ -159,6 +159,7 @@ int read_config(const char *file, int reset){
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/* Optionen mit default-werten füllen */
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if(reset){
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for (i = 0; keywords[i].keyword[0]; i++)
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//printf("keyword: %s \n",keywords[i].keyword);
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if (keywords[i].def[0])
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keywords[i].handler(keywords[i].def, keywords[i].var);
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}
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