Work on the Sensor-checker has begun

git-svn-id: file:///home/jan/tmp/wetterstation/trunk@41 dd492736-c11a-0410-ad51-8c26713eaf7f
This commit is contained in:
losinshi 2006-08-24 01:01:03 +00:00
parent 4cc74949d2
commit 06db256fc7
2 changed files with 241 additions and 0 deletions

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/*
weatherdeamon -- Weather Data Capture Program for the
'ELV-PC-Wettersensor-Empfänger'
config.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 <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "config.h"
#include "definitions.h"
#include "main.h"
static int set_interval(const char *, void *);
static int set_from_db_flag(const char *, void *);
static int add_sens_id(const char *, void *);
static int add_address(const char *, void *);
static int read_str(const char *, void *);
/* Zuordnung zwischen Schlüsselwörtern in der Config, Der Funktion, die diese auswertet
* und dem eld in der Options-Struktur */
static const struct config_keyword keywords[] = {
/* keyword handler variable address default */
{"checkinterval", set_interval, &(global_opts.interval), DEFAULT_CHECK_INTERVAL},
{"sensorid_from_db", set_from_db_flag, &(global_opts.id_from_db), "yes"},
{"sensorid", add_sens_id, &(global_opts.sens_id_list), NULL},
{"adminaddress", add_address, &(global_opts.address_list), NULL},
{"pg_host", read_str, &(global_opts.pg_host), DEFAULT_PG_HOST},
{"pg_user", read_str, &(global_opts.pg_user), DEFAULT_PG_USER},
{"pg_pass", read_str, &(global_opts.pg_pass), DEFAULT_PG_PASS},
{"pg_database", read_str, &(global_opts.pg_database), DEFAULT_PG_DATABASE},
{"", NULL, NULL, ""}
};
/* Liest eine Option (line) als String und speichert diese in
* dem entsprechendem Feld der Optionen-Struktur (arg) */
static int read_str(const char *line, void *arg){
char **dest = arg;
if (*dest) free(*dest);
*dest = strdup(line);
return 1;
}
/* Interval lesen, indem die Sensoren das letzte mal etwas gesendet haben sollen */
static int set_interval(const char *line, void *arg){
int *dest = arg;
*dest = atoi(line);
}
/* lesen, ob id's aus der Datenbank gelesen werden sollen oder nicht */
static int set_from_db_flag(const char *line, void *arg){
char *dest = arg;
int retval = 1;
if (!strcasecmp("yes", line))
*dest = 1;
else if (!strcasecmp("no", line))
*dest = 0;
else retval = 0;
return retval;
}
static int add_sens_id(const char *line, void *arg){
if (line == NULL){
*((sens_id_list_ptr*)arg) = NULL;
return 1;
} else {
sens_id_list_ptr id_new, id_temp;
id_new = malloc(sizeof(sensor_id));
id_new->next = NULL;
id_new->id = atoi(line);
id_temp = *((sens_id_list_ptr*)arg);
if (id_temp == NULL){
id_temp = id_new;
} else {
while (id_temp->next != NULL){
id_temp = id_temp->next;
}
id_temp->next = id_new;
}
return 1;
}
}
static int add_address(const char *line, void *arg){
if (line == NULL){
*((mail_list_ptr*)arg) = NULL;
return 1;
} else {
mail_list_ptr adr_new, adr_temp;
adr_new = malloc(sizeof(mail_address));
adr_new->next = NULL;
adr_new->address = strdup(line);
adr_temp = *((mail_list_ptr*)arg);
if (adr_temp == NULL){
adr_temp = adr_new;
} else {
while (adr_temp->next != NULL){
adr_temp = adr_temp->next;
}
adr_temp->next = adr_new;
}
return 1;
}
}
/* Liest und verarbeitet die Config-File
* der Integer reset gibt an, ob zu begin defaultwerte
* gesetzt werden sollen oder nicht */
int read_config(const char *file, int reset){
FILE *in; /* File-Handler */
char buffer[CONFIG_BUFFERSIZE], *token, *line; /* Puffer zum lesen der config-file (imer 1 Zeile)*/
char orig[CONFIG_BUFFERSIZE]; /* Originalpuffer zum lesen der config-file, um die Log und debug-ausgabe zu realisieren */
int i; /* Laufvariable */
int lm = 0; /* Zeilen-Nummer */
/* Optionen mit default-werten füllen */
if(reset){
for (i = 0; keywords[i].keyword[0]; i++)
if (keywords[i].def[0])
keywords[i].handler(keywords[i].def, keywords[i].var);
}
/* config-file öffnen */
if (!(in = fopen(file, "r"))) {
DEBUGOUT2("Kann Config-File: %s nicht öffnen!\n", file);
return 0;
}
/* Datei Zeilenweise lesen */
while (fgets(buffer, CONFIG_BUFFERSIZE, in)) {
lm++;
/* Zeilenvorschübe gegen null-terminierungs-Zeichen ersetzen */
if (strchr(buffer, '\n')) *(strchr(buffer, '\n')) = '\0';
/* Originlzeile für eventuelle log-, bzw. debug-meldungen */
strcpy(orig, buffer);
/* Kommentazeichen gegen null-terminierungs-Zeichen ersetzen und damit alles dahinter ignorieren */
if (strchr(buffer, '#')) *(strchr(buffer, '#')) = '\0';
if (!(token = strtok(buffer, " \t"))) continue;
if (!(line = strtok(NULL, ""))) continue;
/* eat leading whitespace */
line = line + strspn(line, " \t=");
/* eat trailing whitespace */
for (i = strlen(line); i > 0 && isspace(line[i - 1]); i--);
line[i] = '\0';
for (i = 0; keywords[i].keyword[0]; i++){
if (!strcasecmp(token, keywords[i].keyword)){
if (!keywords[i].handler(line, keywords[i].var)) {
/* Fehler ins Logfile schreiben */
DEBUGOUT4("Kann '%s' nicht Parsen (%s:%d)!\n", orig, file, lm);
/* reset back to the default value */
keywords[i].handler(keywords[i].def, keywords[i].var);
}
}
}
}
fclose(in);
return 1;
}

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/*
weatherdeamon -- Weather Data Capture Program for the
'ELV-PC-Wettersensor-Empfänger'
config.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.
$Id: process.c v 1.00 11 Aug 2006 losinski $
*/
/* Datenstruktur zum Auswerten des Config-Files */
struct config_keyword {
const char *keyword;
int (* const handler)(const char *line, void *var);
void *var;
const char *def;
} ;
/* Config lesen */
int read_config(const char *, int);