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/* client_config.c -- Handles reading and parsing of config files
*
* GPLv2 only - Copyright (C) 2008 - 2011
* David Sommerseth <dazo@users.sourceforge.net>
*
* 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; version 2
* of the License.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/**
* @file client_config.c
* @author David Sommerseth <dazo@users.sourceforge.net>
* @date 2008-12-01
*
* @brief Config file parser for eurephiadm
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <assert.h>
#include <eurephia_nullsafe.h>
#include <eurephia_values.h>
#include <eurephia_cfgfile.h>
/**
* Retrieve a the full path of a file name. Will try to look for the file in different places, like
* if EUREPHIA_DIR is set, it will look here or else in ${HOME}/.eurephia.
*
* @param env const char * to an environment variable to look for the given filename
* @param file File name which we are looking for
*
* @return Returns a full path to the file name, or NULL on error.
*/
char *get_config_filename(const char *env, const char *file) {
struct stat chk;
static char fname[1026];
char *ptr;
int flen = 1024 - strlen_nullsafe(file);
assert( (file != NULL));
memset(&fname, 0, 1026);
if( env != NULL ) {
// Use the explicit eurephia session file, if set in environment
if( (ptr = getenv(env)) != NULL ) {
snprintf(fname, 1024, "%s", ptr);
return fname;
}
}
// Use the explicit set eurephia session directory for a session file
if( ((ptr = getenv("EUREPHIA_DIR")) != NULL) && (strlen_nullsafe(ptr) <= 1016) ) {
strncat(fname, ptr, flen-1);
strcat(fname, "/");
strcat(fname, file);
// Make sure we have this directory
if( stat(ptr, &chk) == -1 ) {
if( mkdir(ptr, S_IRWXU) == -1 ) {
fprintf(stderr, "Could not create eurephia directory: %s\n", ptr);
return NULL;
}
}
return fname;
}
// Use default ~/.eurephia directory for session file
if( ((ptr = getenv("HOME")) != NULL) && (strlen_nullsafe(ptr) <= 1016) ) {
flen -= 10;
strncat(fname, ptr, flen);
strcat(fname, "/.eurephia");
// Make sure we have this directory
if( stat(fname, &chk) == -1 ) {
if( mkdir(fname, S_IRWXU) == -1 ) {
fprintf(stderr, "Could not create eurephia directory: %s\n", fname);
return NULL;
}
}
strcat(fname, "/");
strcat(fname, file);
return fname;
}
return NULL;
}
/**
* Parses a complete config file and puts it into an eurephiaVALUES key/value stack
*
* @param env Environment table, used for locating the config file
* @param cfgname File name of the configuration file.
*
* @return Returns a pointer to an eurephiaVALUES stack containing the configuration on success,
* otherwise NULL.
*/
eurephiaVALUES *ReadConfig(const char *env, const char *cfgname) {
char *fname = NULL;
eurephiaVALUES *cfg = NULL;
fname = get_config_filename(env, cfgname);
if( fname == NULL ) {
fprintf(stderr, "Could not find a valid path for the config file\n");
return NULL;
}
cfg = ecfg_ReadConfig(NULL, fname);
if( cfg == NULL ) {
fprintf(stderr, "Failed to parse the config file (%s)\n", cfgname);
}
return cfg;
}
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