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xrdp/sesman/config.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2013
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*
* @file config.c
* @brief User authentication code
* @author Simone Fedele @< simo [at] esseemme [dot] org @>
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "arch.h"
#include "list.h"
#include "file.h"
#include "sesman.h"
#include "log.h"
#include "string_calls.h"
/***************************************************************************//**
*
* @brief Reads sesman [global] configuration section
* @param file configuration file descriptor
* @param cf pointer to a config struct
* @param param_n parameter name list
* @param param_v parameter value list
* @return 0 on success, 1 on failure
*
*/
static int
config_read_globals(int file, struct config_sesman *cf, struct list *param_n,
struct list *param_v)
{
int i;
int length;
char *buf;
list_clear(param_v);
list_clear(param_n);
/* resetting the struct */
cf->listen_address[0] = '\0';
cf->listen_port[0] = '\0';
cf->enable_user_wm = 0;
cf->user_wm[0] = '\0';
cf->default_wm = 0;
cf->auth_file_path = 0;
cf->reconnect_sh = 0;
file_read_section(file, SESMAN_CFG_GLOBALS, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
buf = (char *)list_get_item(param_n, i);
if (0 == g_strcasecmp(buf, SESMAN_CFG_DEFWM))
{
cf->default_wm = g_strdup((char *)list_get_item(param_v, i));
}
else if (0 == g_strcasecmp(buf, SESMAN_CFG_USERWM))
{
g_strncpy(cf->user_wm, (char *)list_get_item(param_v, i), 31);
}
else if (0 == g_strcasecmp(buf, SESMAN_CFG_ENABLE_USERWM))
{
cf->enable_user_wm = g_text2bool((char *)list_get_item(param_v, i));
}
else if (0 == g_strcasecmp(buf, SESMAN_CFG_PORT))
{
g_strncpy(cf->listen_port, (char *)list_get_item(param_v, i), 15);
}
else if (0 == g_strcasecmp(buf, SESMAN_CFG_ADDRESS))
{
g_strncpy(cf->listen_address, (char *)list_get_item(param_v, i), 31);
}
else if (0 == g_strcasecmp(buf, SESMAN_CFG_AUTH_FILE_PATH))
{
cf->auth_file_path = g_strdup((char *)list_get_item(param_v, i));
}
else if (g_strcasecmp(buf, SESMAN_CFG_RECONNECT_SH) == 0)
{
cf->reconnect_sh = g_strdup((char *)list_get_item(param_v, i));
}
}
/* checking for missing required parameters */
if ('\0' == cf->listen_address[0])
{
g_strncpy(cf->listen_address, "0.0.0.0", 8);
}
if ('\0' == cf->listen_port[0])
{
g_strncpy(cf->listen_port, "3350", 5);
}
if ('\0' == cf->user_wm[0])
{
cf->enable_user_wm = 0;
}
if (cf->default_wm == 0)
{
cf->default_wm = g_strdup("startwm.sh");
}
else if (g_strlen(cf->default_wm) == 0)
{
g_free(cf->default_wm);
cf->default_wm = g_strdup("startwm.sh");
}
/* if default_wm doesn't begin with '/', it's a relative path to XRDP_CFG_PATH */
if (cf->default_wm[0] != '/')
{
/* sizeof operator returns string length including null terminator */
length = sizeof(XRDP_CFG_PATH) + g_strlen(cf->default_wm) + 1; /* '/' */
buf = (char *)g_malloc(length, 0);
g_sprintf(buf, "%s/%s", XRDP_CFG_PATH, cf->default_wm);
g_free(cf->default_wm);
cf->default_wm = g_strdup(buf);
g_free(buf);
}
if (cf->reconnect_sh == 0)
{
cf->reconnect_sh = g_strdup("reconnectwm.sh");
}
else if (g_strlen(cf->reconnect_sh) == 0)
{
g_free(cf->reconnect_sh);
cf->reconnect_sh = g_strdup("reconnectwm.sh");
}
/* if reconnect_sh doesn't begin with '/', it's a relative path to XRDP_CFG_PATH */
if (cf->reconnect_sh[0] != '/')
{
/* sizeof operator returns string length including null terminator */
length = sizeof(XRDP_CFG_PATH) + g_strlen(cf->reconnect_sh) + 1; /* '/' */
buf = (char *)g_malloc(length, 0);
g_sprintf(buf, "%s/%s", XRDP_CFG_PATH, cf->reconnect_sh);
g_free(cf->reconnect_sh);
cf->reconnect_sh = g_strdup(buf);
g_free(buf);
}
return 0;
}
/***************************************************************************//**
*
* @brief Reads sesman [Security] configuration section
* @param file configuration file descriptor
* @param sc pointer to a config_security struct
* @param param_n parameter name list
* @param param_v parameter value list
* @return 0 on success, 1 on failure
*
*/
static int
config_read_security(int file, struct config_security *sc,
struct list *param_n,
struct list *param_v)
{
int i;
int gid;
char *buf;
list_clear(param_v);
list_clear(param_n);
/* setting defaults */
sc->allow_root = 0;
sc->login_retry = 3;
sc->ts_users_enable = 0;
sc->ts_admins_enable = 0;
sc->restrict_outbound_clipboard = 0;
file_read_section(file, SESMAN_CFG_SECURITY, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
buf = (char *)list_get_item(param_n, i);
if (0 == g_strcasecmp(buf, SESMAN_CFG_SEC_ALLOW_ROOT))
{
sc->allow_root = g_text2bool((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SEC_LOGIN_RETRY))
{
sc->login_retry = g_atoi((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SEC_USR_GROUP))
{
if (g_getgroup_info((char *)list_get_item(param_v, i), &gid) == 0)
{
sc->ts_users_enable = 1;
sc->ts_users = gid;
}
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SEC_ADM_GROUP))
{
if (g_getgroup_info((char *)list_get_item(param_v, i), &gid) == 0)
{
sc->ts_admins_enable = 1;
sc->ts_admins = gid;
}
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SEC_ALWAYSGROUPCHECK))
{
sc->ts_always_group_check = g_text2bool((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SEC_RESTRICT_OUTBOUND_CLIPBOARD))
{
sc->restrict_outbound_clipboard = g_text2bool((char *)list_get_item(param_v, i));
}
}
return 0;
}
/***************************************************************************//**
*
* @brief Reads sesman [Sessions] configuration section
* @param file configuration file descriptor
* @param ss pointer to a config_sessions struct
* @param param_n parameter name list
* @param param_v parameter value list
* @return 0 on success, 1 on failure
*
*/
static int
config_read_sessions(int file, struct config_sessions *se, struct list *param_n,
struct list *param_v)
{
int i;
char *buf;
list_clear(param_v);
list_clear(param_n);
/* setting defaults */
se->x11_display_offset = 10;
se->max_sessions = 0;
se->max_idle_time = 0;
se->max_disc_time = 0;
se->kill_disconnected = 0;
se->policy = SESMAN_CFG_SESS_POLICY_DFLT;
file_read_section(file, SESMAN_CFG_SESSIONS, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
buf = (char *)list_get_item(param_n, i);
if (0 == g_strcasecmp(buf, SESMAN_CFG_SESS_X11DISPLAYOFFSET))
{
se->x11_display_offset = g_atoi((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SESS_MAX))
{
se->max_sessions = g_atoi((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SESS_KILL_DISC))
{
se->kill_disconnected = g_text2bool((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SESS_IDLE_LIMIT))
{
se->max_idle_time = g_atoi((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SESS_DISC_LIMIT))
{
se->max_disc_time = g_atoi((char *)list_get_item(param_v, i));
}
if (0 == g_strcasecmp(buf, SESMAN_CFG_SESS_POLICY_S))
{
char *value = (char *)list_get_item(param_v, i);
if (0 == g_strcasecmp(value, SESMAN_CFG_SESS_POLICY_DFLT_S))
{
se->policy = SESMAN_CFG_SESS_POLICY_DFLT;
}
else if (0 == g_strcasecmp(value, SESMAN_CFG_SESS_POLICY_UBD_S))
{
se->policy = SESMAN_CFG_SESS_POLICY_UBD;
}
else if (0 == g_strcasecmp(value, SESMAN_CFG_SESS_POLICY_UBI_S))
{
se->policy = SESMAN_CFG_SESS_POLICY_UBI;
}
else if (0 == g_strcasecmp(value, SESMAN_CFG_SESS_POLICY_UBC_S))
{
se->policy = SESMAN_CFG_SESS_POLICY_UBC;
}
else if (0 == g_strcasecmp(value, SESMAN_CFG_SESS_POLICY_UBDI_S))
{
se->policy = SESMAN_CFG_SESS_POLICY_UBDI;
}
else if (0 == g_strcasecmp(value, SESMAN_CFG_SESS_POLICY_UBDC_S))
{
se->policy = SESMAN_CFG_SESS_POLICY_UBDC;
}
else /* silently ignore typos */
{
se->policy = SESMAN_CFG_SESS_POLICY_DFLT;
}
}
}
return 0;
}
/***************************************************************************//**
*
* @brief Reads sesman [X11rdp] configuration section
* @param file configuration file descriptor
* @param cs pointer to a config_sesman struct
* @param param_n parameter name list
* @param param_v parameter value list
* @return 0 on success, 1 on failure
*
*/
static int
config_read_rdp_params(int file, struct config_sesman *cs, struct list *param_n,
struct list *param_v)
{
int i;
list_clear(param_v);
list_clear(param_n);
cs->rdp_params = list_create();
cs->rdp_params->auto_free = 1;
file_read_section(file, SESMAN_CFG_RDP_PARAMS, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
list_add_item(cs->rdp_params, (long)g_strdup((char *)list_get_item(param_v, i)));
}
return 0;
}
/***************************************************************************//**
*
* @brief Reads sesman [Xorg] configuration section
* @param file configuration file descriptor
* @param cs pointer to a config_sesman struct
* @param param_n parameter name list
* @param param_v parameter value list
* @return 0 on success, 1 on failure
*
*/
static int
config_read_xorg_params(int file, struct config_sesman *cs,
struct list *param_n, struct list *param_v)
{
int i;
list_clear(param_v);
list_clear(param_n);
cs->xorg_params = list_create();
cs->xorg_params->auto_free = 1;
file_read_section(file, SESMAN_CFG_XORG_PARAMS, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
list_add_item(cs->xorg_params,
(long) g_strdup((char *) list_get_item(param_v, i)));
}
return 0;
}
/***************************************************************************//**
*
* @brief Reads sesman [Xvnc] configuration section
* @param file configuration file descriptor
* @param cs pointer to a config_sesman struct
* @param param_n parameter name list
* @param param_v parameter value list
* @return 0 on success, 1 on failure
*
*/
static int
config_read_vnc_params(int file, struct config_sesman *cs, struct list *param_n,
struct list *param_v)
{
int i;
list_clear(param_v);
list_clear(param_n);
cs->vnc_params = list_create();
cs->vnc_params->auto_free = 1;
file_read_section(file, SESMAN_CFG_VNC_PARAMS, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
list_add_item(cs->vnc_params, (long)g_strdup((char *)list_get_item(param_v, i)));
}
return 0;
}
/******************************************************************************/
static int
config_read_session_variables(int file, struct config_sesman *cs,
struct list *param_n, struct list *param_v)
{
int i;
list_clear(param_v);
list_clear(param_n);
cs->env_names = list_create();
cs->env_names->auto_free = 1;
cs->env_values = list_create();
cs->env_values->auto_free = 1;
file_read_section(file, SESMAN_CFG_SESSION_VARIABLES, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{
list_add_item(cs->env_names,
(tintptr) g_strdup((char *) list_get_item(param_n, i)));
list_add_item(cs->env_values,
(tintptr) g_strdup((char *) list_get_item(param_v, i)));
}
return 0;
}
/******************************************************************************/
struct config_sesman *
config_read(const char *sesman_ini)
{
struct config_sesman *cfg;
int all_ok = 0;
if ((cfg = g_new0(struct config_sesman, 1)) != NULL)
{
if ((cfg->sesman_ini = g_strdup(sesman_ini)) != NULL)
{
int fd;
if ((fd = g_file_open_ex(cfg->sesman_ini, 1, 0, 0, 0)) != -1)
{
struct list *sec;
struct list *param_n;
struct list *param_v;
sec = list_create();
sec->auto_free = 1;
file_read_sections(fd, sec);
param_n = list_create();
param_n->auto_free = 1;
param_v = list_create();
param_v->auto_free = 1;
/* read global config */
config_read_globals(fd, cfg, param_n, param_v);
/* read Xvnc/X11rdp/Xorg parameter list */
config_read_vnc_params(fd, cfg, param_n, param_v);
config_read_rdp_params(fd, cfg, param_n, param_v);
config_read_xorg_params(fd, cfg, param_n, param_v);
/* read security config */
config_read_security(fd, &(cfg->sec), param_n, param_v);
/* read session config */
config_read_sessions(fd, &(cfg->sess), param_n, param_v);
config_read_session_variables(fd, cfg, param_n, param_v);
/* cleanup */
list_delete(sec);
list_delete(param_v);
list_delete(param_n);
g_file_close(fd);
all_ok = 1;
}
}
}
if (!all_ok)
{
config_free(cfg);
cfg = NULL;
}
return cfg;
}
/******************************************************************************/
void
config_dump(struct config_sesman *config)
{
int i;
struct config_sessions *se;
struct config_security *sc;
se = &(config->sess);
sc = &(config->sec);
/* Global sesman configuration */
g_writeln("Filename: %s", config->sesman_ini);
g_writeln("Global configuration:");
g_writeln(" ListenAddress: %s", config->listen_address);
g_writeln(" ListenPort: %s", config->listen_port);
g_writeln(" EnableUserWindowManager: %d", config->enable_user_wm);
g_writeln(" UserWindowManager: %s", config->user_wm);
g_writeln(" DefaultWindowManager: %s", config->default_wm);
g_writeln(" ReconnectScript: %s", config->reconnect_sh);
g_writeln(" AuthFilePath: %s",
((config->auth_file_path) ? (config->auth_file_path) : ("disabled")));
/* Session configuration */
g_writeln("Session configuration:");
g_writeln(" MaxSessions: %d", se->max_sessions);
g_writeln(" X11DisplayOffset: %d", se->x11_display_offset);
g_writeln(" KillDisconnected: %d", se->kill_disconnected);
g_writeln(" IdleTimeLimit: %d", se->max_idle_time);
g_writeln(" DisconnectedTimeLimit: %d", se->max_disc_time);
g_writeln(" Policy: %d", se->policy);
/* Security configuration */
g_writeln("Security configuration:");
g_writeln(" AllowRootLogin: %d", sc->allow_root);
g_writeln(" MaxLoginRetry: %d", sc->login_retry);
g_writeln(" AlwaysGroupCheck: %d", sc->ts_always_group_check);
g_writeln(" RestrictOutboundClipboard: %d", sc->restrict_outbound_clipboard);
g_printf( " TSUsersGroup: ");
if (sc->ts_users_enable)
{
g_printf("%d", sc->ts_users);
}
else
{
g_printf("(not defined)");
}
g_writeln("%s", "");
g_printf( " TSAdminsGroup: ");
if (sc->ts_admins_enable)
{
g_printf("%d", sc->ts_admins);
}
else
{
g_printf("(not defined)");
}
g_writeln("%s", "");
/* Xorg */
if (config->xorg_params->count)
{
g_writeln("Xorg parameters:");
}
for (i = 0; i < config->xorg_params->count; i++)
{
g_writeln(" Parameter %02d %s",
i, (char *) list_get_item(config->xorg_params, i));
}
/* Xvnc */
if (config->vnc_params->count)
{
g_writeln("Xvnc parameters:");
}
for (i = 0; i < config->vnc_params->count; i++)
{
g_writeln(" Parameter %02d %s",
i, (char *)list_get_item(config->vnc_params, i));
}
/* X11rdp */
if (config->rdp_params->count)
{
g_writeln("X11rdp parameters:");
}
for (i = 0; i < config->rdp_params->count; i++)
{
g_writeln(" Parameter %02d %s",
i, (char *)list_get_item(config->rdp_params, i));
}
/* SessionVariables */
if (config->env_names->count)
{
g_writeln("%s parameters:", SESMAN_CFG_SESSION_VARIABLES);
}
for (i = 0; i < config->env_names->count; i++)
{
g_writeln(" Parameter %02d %s=%s",
i, (char *) list_get_item(config->env_names, i),
(char *) list_get_item(config->env_values, i));
}
}
/******************************************************************************/
void
config_free(struct config_sesman *cs)
{
if (cs != NULL)
{
g_free(cs->sesman_ini);
g_free(cs->default_wm);
g_free(cs->reconnect_sh);
g_free(cs->auth_file_path);
list_delete(cs->rdp_params);
list_delete(cs->vnc_params);
list_delete(cs->xorg_params);
list_delete(cs->env_names);
list_delete(cs->env_values);
g_free(cs);
}
}
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