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/*++
/* NAME
/* mail_conf 3
/* SUMMARY
/* global configuration parameter management
/* SYNOPSIS
/* #include <mail_conf.h>
/*
/* void mail_conf_read()
/*
/* void mail_conf_update(name, value)
/* const char *name;
/* const char *value;
/*
/* const char *mail_conf_lookup(name)
/* const char *name;
/*
/* const char *mail_conf_eval(string)
/* const char *string;
/*
/* const char *mail_conf_lookup_eval(name)
/* const char *name;
/* DESCRIPTION
/* mail_conf_read() reads the global Postfix configuration file, and
/* stores its values into a global configuration dictionary.
/*
/* The following routines are wrappers around the generic dictionary
/* access routines.
/*
/* mail_conf_update() updates the named global parameter. This has
/* no effect on parameters whose value has already been looked up.
/* The update succeeds or the program terminates with fatal error.
/*
/* mail_conf_lookup() looks up the value of the named parameter.
/* A null pointer result means the parameter was not found.
/* The result is volatile and should be copied if it is to be
/* used for any appreciable amount of time.
/*
/* mail_conf_eval() recursively expands any $parameters in the
/* string argument. The result is volatile and should be copied
/* if it is to be used for any appreciable amount of time.
/*
/* mail_conf_lookup_eval() looks up the named parameter, and expands any
/* $parameters in the result. The result is volatile and should be
/* copied if it is to be used for any appreciable amount of time.
/* DIAGNOSTICS
/* Fatal errors: malformed numerical value.
/* FILES
/* /etc/postfix: default Postfix configuration directory.
/* ENVIRONMENT
/* MAIL_CONFIG, non-default configuration database
/* MAIL_VERBOSE, enable verbose mode
/* SEE ALSO
/* dict(3) generic dictionary manager
/* mail_conf_int(3) integer-valued parameters
/* mail_conf_str(3) string-valued parameters
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <stdlib.h>
/* Utility library. */
#include <msg.h>
#include <mymalloc.h>
#include <vstream.h>
#include <vstring.h>
#include <dict.h>
#include <safe.h>
#include <stringops.h>
/* Global library. */
#include "mail_params.h"
#include "mail_conf.h"
/* mail_conf_read - read global configuration file */
void mail_conf_read(void)
{
char *config_dir;
char *path;
/*
* Permit references to unknown configuration variable names. We rely on
* a separate configuration checking tool to spot misspelled names and
* other kinds of trouble. Enter the configuration directory into the
* default dictionary.
*/
dict_unknown_allowed = 1;
if (var_config_dir)
myfree(var_config_dir);
var_config_dir = mystrdup((config_dir = safe_getenv(CONF_ENV_PATH)) != 0 ?
config_dir : DEF_CONFIG_DIR); /* XXX */
set_mail_conf_str(VAR_CONFIG_DIR, var_config_dir);
path = concatenate(var_config_dir, "/", "main.cf", (char *) 0);
dict_load_file(CONFIG_DICT, path);
myfree(path);
mail_params_init();
}
/* mail_conf_eval - expand macros in string */
const char *mail_conf_eval(const char *string)
{
#define RECURSIVE 1
return (dict_eval(CONFIG_DICT, string, RECURSIVE));
}
/* mail_conf_lookup - lookup named variable */
const char *mail_conf_lookup(const char *name)
{
return (dict_lookup(CONFIG_DICT, name));
}
/* mail_conf_lookup_eval - expand named variable */
const char *mail_conf_lookup_eval(const char *name)
{
const char *value;
#define RECURSIVE 1
if ((value = dict_lookup(CONFIG_DICT, name)) != 0)
value = dict_eval(CONFIG_DICT, value, RECURSIVE);
return (value);
}
/* mail_conf_update - update parameter */
void mail_conf_update(const char *key, const char *value)
{
dict_update(CONFIG_DICT, key, value);
}
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