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Working on sensor-checking 

git-svn-id: file:///home/jan/tmp/wetterstation/trunk@51 dd492736-c11a-0410-ad51-8c26713eaf7f
This commit is contained in:
losinshi 2006-08-30 00:39:17 +00:00
parent 5f44a08280
commit f308f7b6ba
3 changed files with 255 additions and 9 deletions
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182
cronjob/checksensor/checksensor.c Normal file
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@ -0,0 +1,182 @@
/*
checksensor.c -- Part of the weatherdeamon
Copyright (C) 2006 Jan Losinski
This program 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 of the License, or
(at your option) any later version.
This program 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.
$Id: process.c v 1.00 11 Aug 2006 losinski $
*/
#include <stdlib.h> /* EXIT_SUCCESS */
#include <errno.h>
#include <unistd.h> /* STDOUT_FILENO */
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <postgresql/libpq-fe.h>
#include "definitions.h"
#include "config.h"
#include "checksensor.h"
#define BUFFSIZE 1024
/* Variablen ---------------------------------------------------------- */
w_opts global_opts;
static PGconn *connection = NULL;
static char *conn_string = NULL;
/* Funktionen ----------------------------------------------------------*/
static void clean();
static void exit_sig_handler(int);
/* Implementierungen ---------------------------------------------------*/
static void generate_conn_string(){
if(conn_string == NULL){
conn_string = malloc(sizeof(char)*BUFFSIZE);
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);
}
}
static PGconn *pg_check_connect(char *conn_string){
PGconn *conn = PQconnectdb(conn_string); /* Connection aufbauen */
if(PQstatus(conn) != CONNECTION_OK){
DEBUGOUT2("\nFehler beim Aufbau der Datenbankverbindung\n%s\n", PQerrorMessage(conn));
exit_error(ERROR_MAKECONN);
}
DEBUGOUT1("Verbindung hergestellt \n");
return conn;
}
static PGresult *pg_check_exec(PGconn *conn, char *query){
PGresult *res;
res = PQexec(conn, query);
if(!res || PQresultStatus(res) != PGRES_TUPLES_OK){
DEBUGOUT2("Fehler beim exec: %s\n", query);
exit_error(ERROR_QUERY);
} else {
DEBUGOUT2("Query: '%s' ausgeführt\n", query);
}
return res;
}
static void get_sensors_from_db(){
int id_field;
int i;
sens_id_list_ptr new_id, temp_id = NULL;
connection = pg_check_connect(conn_string);
PGresult *res = pg_check_exec(connection, "select id from sensoren");
id_field = PQfnumber(res, "id");
for (i = 0; i < PQntuples(res); i++){
new_id = malloc(sizeof(sensor_id));
new_id->id = atoi(PQgetvalue(res, i, id_field));
if (temp_id == NULL){
temp_id = new_id;
global_opts.sens_id_list = temp_id;
} else {
temp_id->next = new_id;
temp_id = temp_id->next;
}
DEBUGOUT2("add id: (%d)\n", new_id->id);
}
}
/* Mainfkt. und diverse andere Funktionen zum beenden des Programmes ---*/
/* Main-Funktion */
int main(int argc, char *argv[]){
/* errno 0 setzen */
errno = 0;
DEBUGOUT1("Programm gestartet\n");
/* Signal-Handling zum Abbrechen ses Progammes */
if(signal(SIGABRT, exit_sig_handler) == SIG_ERR)
exit_error(ERROR_SEIINST);
DEBUGOUT1("Signalhandler zum beenden per SIGABRT installiert\n");
if(signal(SIGINT, exit_sig_handler) == SIG_ERR)
exit_error(ERROR_SEIINST);
DEBUGOUT1("Signalhandler zum beenden per SIGINT installiert\n");
if(signal(SIGQUIT, exit_sig_handler) == SIG_ERR)
exit_error(ERROR_SEIINST);
DEBUGOUT1("Signalhandler zum beenden per SIGQUIT installiert\n");
if(signal(SIGTERM, exit_sig_handler) == SIG_ERR)
exit_error(ERROR_SEIINST);
DEBUGOUT1("Signalhandler zum beenden per SIGTERM installiert\n");
read_config(DEFAULT_CONFIG_FILE,1);
/* Debug-Ausgaben, um zu sehen, ob die Optionen richtig gesetzt werden */
DEBUGOUT1("\nPostgres:\n");
DEBUGOUT2(" Host: = %s\n",global_opts.pg_host);
DEBUGOUT2(" User: = %s\n",global_opts.pg_user);
DEBUGOUT2(" Pass: = %s\n",global_opts.pg_pass);
DEBUGOUT2(" Datenbank = %s\n",global_opts.pg_database);
generate_conn_string();
get_sensors_from_db();
clean();
return EXIT_SUCCESS;
}
/* Diese Funktion beendet das Programm mit einer Fehlermeldung. */
void exit_error(char* err){
DEBUGOUT1("\nEtwas unschoenes ist passiert\n");
clean();
if(errno != 0){
perror("Fehler");
}
write(STDOUT_FILENO, err, strlen(err));
exit(1);
}
/* Wird bei Beendigungssignalen ausgefuehrt */
static void exit_sig_handler(int signr){
#ifdef DEBUG
DEBUGOUT1("\n");
switch (signr){
case SIGABRT:
DEBUGOUT1("SIGABRT Interupt erhalten!\n");
case SIGTERM:
DEBUGOUT1("SIGTERM Interupt erhalten!\n");
case SIGQUIT:
DEBUGOUT1("SIGQUIT Interupt erhalten!\n");
case SIGINT:
DEBUGOUT1("SIGINT Interupt erhalten!\n");
}
#endif
clean();
DEBUGOUT1("Beende Programm...\n");
exit(0);
}
/* Aufraumen ausfuehren */
static void clean(){
DEBUGOUT1("\nRaeume auf...\n");
if(connection != NULL)
PQfinish(connection);
}

63
cronjob/checksensor/checksensor.h Normal file
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@ -0,0 +1,63 @@
/*
main.h -- Part of the weatherdeamon
Copyright (C) 2006 Jan Losinski
This program 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 of the License, or
(at your option) any later version.
This program 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.
*/
#include "mailer.h"
/* Datenstrukturen --------------------------------------------------------*/
typedef struct sens_id_list *sens_id_list_ptr;
typedef struct sens_id_list {
sens_id_list_ptr next;
int id;
} sensor_id;
typedef struct address_t *mail_list_ptr;
/* Optionen */
typedef struct {
int *interval; /* Das Interval, in dem ein Sensor zuletzt gesendet haben sollte */
mail_list_ptr address_list; /* Liste der Ids der Sensoren, die ueberprueft werden sollen */
sens_id_list_ptr sens_id_list; /* Liste der Mail-Addressen, die benachichtigt werden sollen wenn was ist */
char id_from_db; /* Flag, ob die Id's aus der Datenbank gelesen werden sollen */
char *pg_host; /* Postgres-Host */
char *pg_user; /* Postgres-Username */
char *pg_pass; /* Postgres-Password */
char *pg_database; /* Postgres-Datenbank */
char *mail_host;
int mail_port;
char mail_ssl;
char mail_auth;
char *mail_auth_user;
char *mail_auth_pass;
} w_opts;
/* Funktionen -------------------------------------------------------------*/
/* Programm mit einem Fatalem Fehler beenden.
* Argument: Fehlermeldung */
void exit_error(char*);
/* Variablen --------------------------------------------------------------*/
extern w_opts global_opts;

19
cronjob/checksensor/config.c
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@ -31,7 +31,7 @@
#include "config.h" #include "config.h"
#include "definitions.h" #include "definitions.h"
#include "main.h" #include "checksensor.h"
//#include "mailer.h" //#include "mailer.h"
@ -49,15 +49,15 @@ static const struct config_keyword keywords[] = {
/* keyword handler variable address default */ /* keyword handler variable address default */
{"checkinterval", read_int, &(global_opts.interval), DEFAULT_CHECK_INTERVAL}, {"checkinterval", read_int, &(global_opts.interval), DEFAULT_CHECK_INTERVAL},
{"sensorid_from_db", read_yn, &(global_opts.id_from_db), "yes"}, {"sensorid_from_db", read_yn, &(global_opts.id_from_db), "yes"},
{"sensorid", add_sens_id, &(global_opts.sens_id_list), NULL}, {"sensorid", add_sens_id, &(global_opts.sens_id_list), ""},
{"adminaddress", add_address, &(global_opts.address_list), NULL}, {"adminaddress", add_address, &(global_opts.address_list), ""},
{"mail_host", read_str, &(global_opts.mail_host), NULL}, {"mail_host", read_str, &(global_opts.mail_host), ""},
{"mail_port", read_int, &(global_opts.mail_port), NULL}, {"mail_port", read_int, &(global_opts.mail_port), ""},
{"mail_use_ssl", read_yn, &(global_opts.mail_ssl), NULL}, {"mail_use_ssl", read_yn, &(global_opts.mail_ssl), ""},
{"mail_use_auth", read_yn, &(global_opts.mail_auth), NULL}, {"mail_use_auth", read_yn, &(global_opts.mail_auth), ""},
{"mail_auth_user", read_str, &(global_opts.mail_auth_user), NULL}, {"mail_auth_user", read_str, &(global_opts.mail_auth_user), ""},
{"mail_auth_pass", read_str, &(global_opts.mail_auth_pass), NULL}, {"mail_auth_pass", read_str, &(global_opts.mail_auth_pass), ""},
{"pg_host", read_str, &(global_opts.pg_host), DEFAULT_PG_HOST}, {"pg_host", read_str, &(global_opts.pg_host), DEFAULT_PG_HOST},
{"pg_user", read_str, &(global_opts.pg_user), DEFAULT_PG_USER}, {"pg_user", read_str, &(global_opts.pg_user), DEFAULT_PG_USER},
@ -159,6 +159,7 @@ int read_config(const char *file, int reset){
/* Optionen mit default-werten füllen */ /* Optionen mit default-werten füllen */
if(reset){ if(reset){
for (i = 0; keywords[i].keyword[0]; i++) for (i = 0; keywords[i].keyword[0]; i++)
//printf("keyword: %s \n",keywords[i].keyword);
if (keywords[i].def[0]) if (keywords[i].def[0])
keywords[i].handler(keywords[i].def, keywords[i].var); keywords[i].handler(keywords[i].def, keywords[i].var);
} }