/*
Copyright (C) 1999-2004 IC & S dbmail@ic-s.nl
Copyright (c) 2005-2006 NFG Net Facilities Group BV support@nfg.nl
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.
*/
/*
*
* \file config.c
* \brief read configuration values from a config file
*/
#include "dbmail.h"
#define THIS_MODULE "config"
/** dictionary which holds the configuration */
static GKeyFile *config_dict = NULL;
static int configured = 0;
/**
* read the configuration file and stores the configuration
* directives in an internal structure.
*/
int config_read(const char *config_filename)
{
if (configured)
return 0;
assert(config_filename != NULL);
config_dict = g_key_file_new();
if (! g_key_file_load_from_file(config_dict, config_filename, G_KEY_FILE_NONE, NULL)) {
g_key_file_free(config_dict);
TRACE(TRACE_FATAL, "error reading config file %s", config_filename);
_exit(1);
return -1;
}
configured = 1;
return 0;
}
/**
* free all memory related to config
*/
void config_free(void)
{
if (!configured)
return;
g_key_file_free(config_dict);
configured = 0;
}
/* Return 1 if found, 0 if not. */
/* This function also strips any... # Trailing comments. */
/* value is not modified unless something is found. */
static int config_get_value_once(const field_t field_name,
const char * const service_name,
field_t value)
{
char *dict_value;
int retval = 0;
assert(service_name);
assert(config_dict);
dict_value = g_key_file_get_value(config_dict, service_name, field_name, NULL);
if (dict_value) {
char *end;
end = g_strstr_len(dict_value, FIELDSIZE, "#");
if (end) *end = '\0';
g_strstrip(dict_value);
g_strlcpy(value, dict_value, FIELDSIZE);
g_free(dict_value);
retval = 1;
}
return retval;
}
/* FIXME: Always returns 0, which is dandy for debugging. */
int config_get_value(const field_t field_name,
const char * const service_name,
field_t value)
{
char *key;
gssize field_len;
field_len = strlen(field_name);
// First look in the SERVICE section.
// For each attempt, try as-is, upper, lower.
key = NULL;
if (config_get_value_once(field_name, service_name, value))
goto config_get_value_done;
key = g_ascii_strup(field_name, field_len);
if (config_get_value_once(key, service_name, value))
goto config_get_value_done;
g_free(key);
key = g_ascii_strdown(field_name, field_len);
if (config_get_value_once(key, service_name, value))
goto config_get_value_done;
g_free(key);
// if not found, get the DBMAIL section.
// For each attempt, try as-is, upper, lower.
key = NULL;
if (config_get_value_once(field_name, "DBMAIL", value))
goto config_get_value_done;
key = g_ascii_strup(field_name, field_len);
if (config_get_value_once(key, "DBMAIL", value))
goto config_get_value_done;
g_free(key);
key = g_ascii_strdown(field_name, field_len);
if (config_get_value_once(key, "DBMAIL", value))
goto config_get_value_done;
g_free(key);
/* give up */
value[0] = '\0';
return 0;
config_get_value_done:
g_free(key);
return 0;
}
void SetTraceLevel(const char *service_name)
{
trace_t trace_stderr_int, trace_syslog_int;
field_t trace_level, trace_syslog, trace_stderr;
/* Warn about the deprecated "trace_level" config item,
* but we will use this value for trace_syslog if needed. */
config_get_value("trace_level", service_name, trace_level);
if (strlen(trace_level)) {
TRACE(TRACE_MESSAGE,
"Config item TRACE_LEVEL is deprecated. "
"Please use TRACE_SYSLOG and TRACE_STDERR instead.");
}
/* Then we override globals with per-service settings. */
config_get_value("trace_syslog", service_name, trace_syslog);
config_get_value("trace_stderr", service_name, trace_stderr);
if (strlen(trace_syslog))
trace_syslog_int = atoi(trace_syslog);
else if (strlen(trace_level))
trace_syslog_int = atoi(trace_level);
else
trace_syslog_int = TRACE_ERROR;
if (strlen(trace_stderr))
trace_stderr_int = atoi(trace_stderr);
else
trace_stderr_int = TRACE_FATAL;
configure_debug(trace_syslog_int, trace_stderr_int);
}
void GetDBParams(db_param_t * db_params)
{
field_t port_string, sock_string, serverid_string;
field_t query_time;
if (config_get_value("driver", "DBMAIL", db_params->driver) < 0)
TRACE(TRACE_FATAL, "error getting config! [driver]");
if (config_get_value("authdriver", "DBMAIL", db_params->authdriver) < 0)
TRACE(TRACE_FATAL, "error getting config! [authdriver]");
if (config_get_value("sortdriver", "DBMAIL", db_params->sortdriver) < 0)
TRACE(TRACE_FATAL, "error getting config! [sortdriver]");
if (config_get_value("host", "DBMAIL", db_params->host) < 0)
TRACE(TRACE_FATAL, "error getting config! [host]");
if (config_get_value("db", "DBMAIL", db_params->db) < 0)
TRACE(TRACE_FATAL, "error getting config! [db]");
if (config_get_value("user", "DBMAIL", db_params->user) < 0)
TRACE(TRACE_FATAL, "error getting config! [user]");
if (config_get_value("pass", "DBMAIL", db_params->pass) < 0)
TRACE(TRACE_FATAL, "error getting config! [pass]");
if (config_get_value("sqlport", "DBMAIL", port_string) < 0)
TRACE(TRACE_FATAL, "error getting config! [sqlpost]");
if (config_get_value("sqlsocket", "DBMAIL", sock_string) < 0)
TRACE(TRACE_FATAL, "error getting config! [sqlsocket]");
if (config_get_value("serverid", "DBMAIL", serverid_string) < 0)
TRACE(TRACE_FATAL, "error getting config! [serverid]");
if (config_get_value("encoding", "DBMAIL", db_params->encoding) < 0)
TRACE(TRACE_FATAL, "error getting config! [encoding]");
if (config_get_value("table_prefix", "DBMAIL", db_params->pfx) < 0)
TRACE(TRACE_FATAL, "error getting config! [table_prefix]");
if (config_get_value("query_time_info", "DBMAIL", query_time) < 0)
TRACE(TRACE_FATAL, "error getting config! [query_time_info]");
if (strlen(query_time) != 0)
db_params->query_time_info = (unsigned int) strtoul(query_time, NULL, 10);
else
db_params->query_time_info = 10;
if (config_get_value("query_time_message", "DBMAIL", query_time) < 0)
TRACE(TRACE_FATAL, "error getting config! [query_time_message]");
if (strlen(query_time) != 0)
db_params->query_time_message = (unsigned int) strtoul(query_time, NULL, 10);
else
db_params->query_time_message = 20;
if (config_get_value("query_time_warning", "DBMAIL", query_time) < 0)
TRACE(TRACE_FATAL, "error getting config! [query_time_warning]");
if (strlen(query_time) != 0)
db_params->query_time_warning = (unsigned int) strtoul(query_time, NULL, 10);
else
db_params->query_time_warning = 30;
if (strcmp(db_params->pfx, "\"\"") == 0) {
/* FIXME: It appears that when the empty string is quoted
* that the quotes themselves are returned as the value. */
g_strlcpy(db_params->pfx, "", FIELDSIZE);
} else if (strlen(db_params->pfx) == 0) {
/* If it's not "" but is zero length, set the default. */
g_strlcpy(db_params->pfx, DEFAULT_DBPFX, FIELDSIZE);
}
/* expand ~ in db name to HOME env variable */
if ((strlen(db_params->db) > 0 ) && (db_params->db[0] == '~')) {
char *homedir;
field_t db;
if ((homedir = getenv ("HOME")) == NULL)
TRACE(TRACE_FATAL, "can't expand ~ in db name");
g_snprintf(db, FIELDSIZE, "%s%s", homedir, &(db_params->db[1]));
g_strlcpy(db_params->db, db, FIELDSIZE);
}
/* check if port_string holds a value */
if (strlen(port_string) != 0) {
db_params->port =
(unsigned int) strtoul(port_string, NULL, 10);
if (errno == EINVAL || errno == ERANGE)
TRACE(TRACE_FATAL, "wrong value for sqlport in config file");
} else
db_params->port = 0;
/* same for sock_string */
if (strlen(sock_string) != 0)
g_strlcpy(db_params->sock, sock_string, FIELDSIZE);
else
db_params->sock[0] = '\0';
/* and serverid */
if (strlen(serverid_string) != 0) {
db_params->serverid = (unsigned int) strtol(serverid_string, NULL, 10);
if (errno == EINVAL || errno == ERANGE)
TRACE(TRACE_FATAL, "serverid invalid in config file");
} else {
db_params->serverid = 1;
}
}
void config_get_logfiles(serverConfig_t *config)
{
field_t val;
/* logfile */
config_get_value("logfile", "DBMAIL", val);
if (! strlen(val))
g_strlcpy(config->log,DEFAULT_LOG_FILE, FIELDSIZE);
else
g_strlcpy(config->log, val, FIELDSIZE);
assert(config->log);
/* errorlog */
config_get_value("errorlog", "DBMAIL", val);
if (! strlen(val))
g_strlcpy(config->error_log,DEFAULT_ERROR_LOG, FIELDSIZE);
else
g_strlcpy(config->error_log, val, FIELDSIZE);
assert(config->error_log);
/* pid directory */
config_get_value("pid_directory", "DBMAIL", val);
if (! strlen(val))
g_strlcpy(config->pid_dir, DEFAULT_PID_DIR, FIELDSIZE);
else
g_strlcpy(config->pid_dir, val, FIELDSIZE);
assert(config->pid_dir);
/* state directory */
config_get_value("state_directory", "DBMAIL", val);
if (! strlen(val))
g_strlcpy(config->state_dir, DEFAULT_STATE_DIR, FIELDSIZE);
else
g_strlcpy(config->state_dir, val, FIELDSIZE);
assert(config->state_dir);
}
char * config_get_pidfile(serverConfig_t *config, const char *name)
{
char *res;
GString *s;
res = g_build_filename(config->pid_dir, name, NULL);
s = g_string_new("");
g_string_printf(s, "%s%s", res, DEFAULT_PID_EXT);
g_free(res);
res = s->str;
g_string_free(s,FALSE);
return res;
}
char * config_get_statefile(serverConfig_t *config, const char *name)
{
char *res;
GString *s;
res = g_build_filename(config->state_dir, name, NULL);
s = g_string_new("");
g_string_printf(s, "%s%s", res, DEFAULT_STATE_EXT);
g_free(res);
res = s->str;
g_string_free(s,FALSE);
return res;
}
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