src/config.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Fri, 27 Dec 2013 12:24:39 +0100
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/**
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 *  $Id: config.c 51 2008-01-10 00:19:39Z mbroeker $
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 * $URL: http://localhost/svn/c/mcbot/trunk/src/config.c $
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 *
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <compat.h>
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#include <config.h>
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#include "common.h"
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enum config_map {
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    NICK, PASSWORD, SERVER, PORT, CHANNEL, TOPIC,
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};
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const
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char *CONFIG_OPTIONS[] = {
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    "NICK", "PASSWORD", "SERVER", "PORT",
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    "CHANNEL", "TOPIC", NULL
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};
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int config (UC * uc, char *fname)
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{
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    FILE *f;
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    char buffer[DEFAULT_BUF_SIZE];
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    char **line;
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    char *token;
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    char *value;
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    enum config_map map = 0;
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    if ((f = fopen (fname, "r")) == NULL)
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        return -1;
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    while (CONFIG_OPTIONS[map] != NULL)
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        map++;
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    if ((line = calloc ((size_t) (map + 1), sizeof (char *))) == NULL) {
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        fclose (f);
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        return -1;
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    }
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    /*
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     * We can easily provide default values ...
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     */
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    uc->nick = uc->pass = uc->server = uc->channel = uc->topic = NULL;
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    uc->port = "6667";
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    while (!feof (f)) {
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        if (fgets (buffer, sizeof (buffer), f) == NULL)
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            break;
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        token = buffer;
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        while (*token == '\t' || *token == ' ') /* Eat trailing tabs and whitespaces */
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            token++;
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        token = strtok (token, ":");
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        if (token != NULL) {
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            value = strtok (NULL, "\n");
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            map = 0;
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            while (CONFIG_OPTIONS[map] != NULL) {
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                if (!strcmp (CONFIG_OPTIONS[map], token)) {
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                    if (value) {
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                        if (line[map] != '\0')
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                            free (line[map]);
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                        line[map] = compat_strdup (value);
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                    }
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                }
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                map++;
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            }
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        }
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    }
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    map = 0;
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    while (CONFIG_OPTIONS[map] != NULL) {
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        if (line[map] != '\0')
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            switch (map) {
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            case NICK:
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                uc->nick = compat_strdup (line[map]);
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                free (line[map]);
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                break;
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            case PASSWORD:
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                uc->pass = compat_strdup (line[map]);
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                free (line[map]);
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                break;
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            case SERVER:
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                uc->server = compat_strdup (line[map]);
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                free (line[map]);
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                break;
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            case PORT:
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                uc->port = compat_strdup (line[map]);
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                free (line[map]);
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                break;
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            case CHANNEL:
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                uc->channel = compat_strdup (line[map]);
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                free (line[map]);
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                break;
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            case TOPIC:
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                uc->topic = compat_strdup (line[map]);
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                free (line[map]);
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                break;
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            }
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        map++;
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    }
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    free (line);
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    if (fclose (f) != 0)
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        return -1;
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    if (!(uc->nick && uc->server && uc->channel))
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        return -2;
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    return 0;
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}