src/auth/userdb-passwd-file.c

	userdb-passwd-file.c revision ed1bc9a67a9f69f9b4dca3e0a037364dca46a12b
/* Copyright (C) 2002-2003 Timo Sirainen */

#include "common.h"

#ifdef USERDB_PASSWD_FILE

#include "str.h"
#include "auth-cache.h"
#include "var-expand.h"
#include "userdb.h"
#include "db-passwd-file.h"

#define PASSWD_FILE_CACHE_KEY "%u"

struct passwd_file_userdb_module {
        struct userdb_module module;

    struct auth *auth;
    struct db_passwd_file *pwf;
};

static void passwd_file_lookup(struct auth_request *auth_request,
                   userdb_callback_t *callback)
{
    struct userdb_module *_module = auth_request->userdb->userdb;
    struct passwd_file_userdb_module *module =
        (struct passwd_file_userdb_module *)_module;
    struct auth_stream_reply *reply;
    struct passwd_user *pu;
        const struct var_expand_table *table;
    string_t *str;
    const char *key, *value;
    char **p;

    pu = db_passwd_file_lookup(module->pwf, auth_request);
    if (pu == NULL) {
        callback(USERDB_RESULT_USER_UNKNOWN, NULL, auth_request);
        return;
    }

    reply = auth_stream_reply_init(auth_request);
    auth_stream_reply_add(reply, NULL, auth_request->user);
    auth_stream_reply_add(reply, "uid", dec2str(pu->uid));
    auth_stream_reply_add(reply, "gid", dec2str(pu->gid));

    if (pu->home != NULL)
        auth_stream_reply_add(reply, "home", pu->home);

    if (pu->extra_fields != NULL) {
        t_push();
        str = t_str_new(512);
        table = auth_request_get_var_expand_table(auth_request, NULL);

        for (p = pu->extra_fields; *p != NULL; p++) {
            if (strncmp(*p, "userdb_", 7) != 0)
                continue;

            key = *p + 7;
            value = strchr(key, '=');
            if (value != NULL) {
                key = t_strdup_until(key, value);
                str_truncate(str, 0);
                var_expand(str, value + 1, table);
                value = str_c(str);
            }
            auth_stream_reply_add(reply, key, value);
        }
        t_pop();
    }

    callback(USERDB_RESULT_OK, reply, auth_request);
}

static struct userdb_module *
passwd_file_preinit(struct auth_userdb *auth_userdb, const char *args)
{
    struct passwd_file_userdb_module *module;

    module = p_new(auth_userdb->auth->pool,
               struct passwd_file_userdb_module, 1);
    module->auth = auth_userdb->auth;
    module->pwf =
        db_passwd_file_init(args, TRUE, module->auth->verbose_debug);

    if (!module->pwf->vars)
        module->module.cache_key = PASSWD_FILE_CACHE_KEY;
    else {
        module->module.cache_key =
            auth_cache_parse_key(auth_userdb->auth->pool,
                         t_strconcat(PASSWD_FILE_CACHE_KEY,
                                 module->pwf->path,
                             NULL));
    }
    return &module->module;
}

static void passwd_file_init(struct userdb_module *_module,
                 const char *args __attr_unused__)
{
    struct passwd_file_userdb_module *module =
        (struct passwd_file_userdb_module *)_module;

    db_passwd_file_parse(module->pwf);
}

static void passwd_file_deinit(struct userdb_module *_module)
{
    struct passwd_file_userdb_module *module =
        (struct passwd_file_userdb_module *)_module;

    db_passwd_file_unref(&module->pwf);
}

struct userdb_module_interface userdb_passwd_file = {
    "passwd-file",

    passwd_file_preinit,
    passwd_file_init,
    passwd_file_deinit,

    passwd_file_lookup
};

#endif