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xrdp-proprietary/sesman/session.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 session.c
* @brief Session management code
* @author Jay Sorg, Simone Fedele
*
*/
#include "sesman.h"
#include "libscp_types.h"
#include <errno.h>
//#include <time.h>
extern tbus g_sync_event;
extern unsigned char g_fixedkey[8];
extern struct config_sesman *g_cfg; /* in sesman.c */
extern int g_sck; /* in sesman.c */
extern int g_thread_sck; /* in thread.c */
struct session_chain *g_sessions;
int g_session_count;
static int g_sync_width;
static int g_sync_height;
static int g_sync_bpp;
static char *g_sync_username;
static char *g_sync_password;
static char *g_sync_domain;
static char *g_sync_program;
static char *g_sync_directory;
static char *g_sync_client_ip;
static tbus g_sync_data;
static tui8 g_sync_type;
static int g_sync_result;
static int g_sync_cmd;
/**
* Creates a string consisting of all parameters that is hosted in the param list
* @param self
* @param outstr, allocate this buffer before you use this function
* @param len the allocated len for outstr
* @return
*/
char *APP_CC
dumpItemsToString(struct list *self, char *outstr, int len)
{
int index;
tbus item;
int totalLen = 0;
g_memset(outstr, 0, len);
if (self->count == 0)
{
g_writeln("List is empty");
}
for (index = 0; index < self->count; index++)
{
/* +1 = one space*/
totalLen = totalLen + g_strlen((char *)list_get_item(self, index)) + 1;
if (len > totalLen)
{
g_strcat(outstr, (char *)list_get_item(self, index));
g_strcat(outstr, " ");
}
}
return outstr ;
}
/******************************************************************************/
struct session_item *DEFAULT_CC
session_get_bydata(char *name, int width, int height, int bpp, int type, char *client_ip)
{
struct session_chain *tmp;
enum SESMAN_CFG_SESS_POLICY policy = g_cfg->sess.policy;
/*THREAD-FIX require chain lock */
lock_chain_acquire();
tmp = g_sessions;
/* convert from SCP_SESSION_TYPE namespace to SESMAN_SESSION_TYPE namespace */
switch (type)
{
case SCP_SESSION_TYPE_XVNC: /* 0 */
type = SESMAN_SESSION_TYPE_XVNC; /* 2 */
policy |= SESMAN_CFG_SESS_POLICY_D; /* Xvnc cannot resize */
break;
case SCP_SESSION_TYPE_XRDP: /* 1 */
type = SESMAN_SESSION_TYPE_XRDP; /* 1 */
break;
case SCP_SESSION_TYPE_XORG:
type = SESMAN_SESSION_TYPE_XORG;
break;
default:
lock_chain_release();
return 0;
}
#if 0
log_message(LOG_LEVEL_INFO,
"session_get_bydata: search policy %d U %s W %d H %d bpp %d T %d IP %s",
policy, name, width, height, bpp, type, client_ip);
#endif
while (tmp != 0)
{
#if 0
log_message(LOG_LEVEL_INFO,
"session_get_bydata: try %p U %s W %d H %d bpp %d T %d IP %s",
tmp->item,
tmp->item->name,
tmp->item->width, tmp->item->height,
tmp->item->bpp, tmp->item->type,
tmp->item->client_ip);
#endif
if (type == SESMAN_SESSION_TYPE_XRDP)
{
/* only name and bpp need to match for X11rdp, it can resize */
if (g_strncmp(name, tmp->item->name, 255) == 0 &&
(!(policy & SESMAN_CFG_SESS_POLICY_D) ||
(tmp->item->width == width && tmp->item->height == height)) &&
(!(policy & SESMAN_CFG_SESS_POLICY_I) ||
(g_strncmp_d(client_ip, tmp->item->client_ip, ':', 255) == 0)) &&
(!(policy & SESMAN_CFG_SESS_POLICY_C) ||
(g_strncmp(client_ip, tmp->item->client_ip, 255) == 0)) &&
tmp->item->bpp == bpp &&
tmp->item->type == type)
{
/*THREAD-FIX release chain lock */
lock_chain_release();
return tmp->item;
}
}
if (g_strncmp(name, tmp->item->name, 255) == 0 &&
(tmp->item->width == width && tmp->item->height == height) &&
(!(policy & SESMAN_CFG_SESS_POLICY_I) ||
(g_strncmp_d(client_ip, tmp->item->client_ip, ':', 255) == 0)) &&
(!(policy & SESMAN_CFG_SESS_POLICY_C) ||
(g_strncmp(client_ip, tmp->item->client_ip, 255) == 0)) &&
tmp->item->bpp == bpp &&
tmp->item->type == type)
{
/*THREAD-FIX release chain lock */
lock_chain_release();
return tmp->item;
}
tmp = tmp->next;
}
/*THREAD-FIX release chain lock */
lock_chain_release();
return 0;
}
/******************************************************************************/
/**
*
* @brief checks if there's a server running on a display
* @param display the display to check
* @return 0 if there isn't a display running, nonzero otherwise
*
*/
static int DEFAULT_CC
x_server_running_check_ports(int display)
{
char text[256];
int x_running;
int sck;
g_sprintf(text, "/tmp/.X11-unix/X%d", display);
x_running = g_file_exist(text);
if (!x_running)
{
g_sprintf(text, "/tmp/.X%d-lock", display);
x_running = g_file_exist(text);
}
if (!x_running) /* check 59xx */
{
sck = g_tcp_socket();
g_sprintf(text, "59%2.2d", display);
x_running = g_tcp_bind(sck, text);
g_tcp_close(sck);
}
if (!x_running) /* check 60xx */
{
sck = g_tcp_socket();
g_sprintf(text, "60%2.2d", display);
x_running = g_tcp_bind(sck, text);
g_tcp_close(sck);
}
if (!x_running) /* check 62xx */
{
sck = g_tcp_socket();
g_sprintf(text, "62%2.2d", display);
x_running = g_tcp_bind(sck, text);
g_tcp_close(sck);
}
return x_running;
}
/******************************************************************************/
/**
*
* @brief checks if there's a server running on a display
* @param display the display to check
* @return 0 if there isn't a display running, nonzero otherwise
*
*/
static int DEFAULT_CC
x_server_running(int display)
{
char text[256];
int x_running;
int sck;
g_sprintf(text, "/tmp/.X11-unix/X%d", display);
x_running = g_file_exist(text);
if (!x_running)
{
g_sprintf(text, "/tmp/.X%d-lock", display);
x_running = g_file_exist(text);
}
return x_running;
}
/******************************************************************************/
static void DEFAULT_CC
session_start_sessvc(int xpid, int wmpid, long data, char *username, int display)
{
struct list *sessvc_params = (struct list *)NULL;
char wmpid_str[25];
char xpid_str[25];
char exe_path[262];
int i = 0;
/* initialize (zero out) local variables: */
g_memset(wmpid_str, 0, sizeof(char) * 25);
g_memset(xpid_str, 0, sizeof(char) * 25);
g_memset(exe_path, 0, sizeof(char) * 262);
/* new style waiting for clients */
g_sprintf(wmpid_str, "%d", wmpid);
g_sprintf(xpid_str, "%d", xpid);
log_message(LOG_LEVEL_INFO,
"starting xrdp-sessvc - xpid=%s - wmpid=%s",
xpid_str, wmpid_str);
sessvc_params = list_create();
sessvc_params->auto_free = 1;
/* building parameters */
g_snprintf(exe_path, 261, "%s/xrdp-sessvc", XRDP_SBIN_PATH);
list_add_item(sessvc_params, (long)g_strdup(exe_path));
list_add_item(sessvc_params, (long)g_strdup(xpid_str));
list_add_item(sessvc_params, (long)g_strdup(wmpid_str));
list_add_item(sessvc_params, 0); /* mandatory */
env_set_user(username, 0, display);
/* executing sessvc */
g_execvp(exe_path, ((char **)sessvc_params->items));
/* should not get here */
log_message(LOG_LEVEL_ALWAYS,
"error starting xrdp-sessvc - pid %d - xpid=%s - wmpid=%s",
g_getpid(), xpid_str, wmpid_str);
/* logging parameters */
/* no problem calling strerror for thread safety: other threads
are blocked */
log_message(LOG_LEVEL_DEBUG, "errno: %d, description: %s",
errno, g_get_strerror());
log_message(LOG_LEVEL_DEBUG, "execve parameter list:");
for (i = 0; i < (sessvc_params->count); i++)
{
log_message(LOG_LEVEL_DEBUG, " argv[%d] = %s", i,
(char *)list_get_item(sessvc_params, i));
}
list_delete(sessvc_params);
/* keep the old waitpid if some error occurs during execlp */
g_waitpid(wmpid);
g_sigterm(xpid);
g_sigterm(wmpid);
g_sleep(1000);
auth_end(data);
g_exit(0);
}
/******************************************************************************/
/* called with the main thread
returns boolean */
static int APP_CC
session_is_display_in_chain(int display)
{
struct session_chain *chain;
struct session_item *item;
chain = g_sessions;
while (chain != 0)
{
item = chain->item;
if (item->display == display)
{
return 1;
}
chain = chain->next;
}
return 0;
}
/******************************************************************************/
/* called with the main thread */
static int APP_CC
session_get_aval_display_from_chain(void)
{
int display;
display = g_cfg->sess.x11_display_offset;
lock_chain_acquire();
while ((display - g_cfg->sess.x11_display_offset) <= g_cfg->sess.max_sessions)
{
if (!session_is_display_in_chain(display))
{
if (!x_server_running_check_ports(display))
{
lock_chain_release();
return display;
}
}
display++;
}
lock_chain_release();
log_message(LOG_LEVEL_ERROR, "X server -- no display in range is available");
return 0;
}
/******************************************************************************/
static int APP_CC
wait_for_xserver(int display)
{
int i;
/* give X a bit to start */
/* wait up to 10 secs for x server to start */
i = 0;
while (!x_server_running(display))
{
i++;
if (i > 40)
{
log_message(LOG_LEVEL_ERROR,
"X server for display %d startup timeout",
display);
break;
}
g_sleep(250);
}
return 0;
}
/******************************************************************************/
/* called with the main thread */
static int APP_CC
session_start_fork(int width, int height, int bpp, char *username,
char *password, tbus data, tui8 type, char *domain,
char *program, char *directory, char *client_ip)
{
int display = 0;
int pid = 0;
int wmpid = 0;
int pampid = 0;
int xpid = 0;
int i = 0;
char geometry[32];
char depth[32];
char screen[32];
char text[256];
char passwd_file[256];
char **pp1 = (char **)NULL;
struct session_chain *temp = (struct session_chain *)NULL;
struct list *xserver_params = (struct list *)NULL;
time_t ltime;
struct tm stime;
char execvpparams[2048];
/* initialize (zero out) local variables: */
g_memset(&ltime, 0, sizeof(time_t));
g_memset(&stime, 0, sizeof(struct tm));
g_memset(geometry, 0, sizeof(char) * 32);
g_memset(depth, 0, sizeof(char) * 32);
g_memset(screen, 0, sizeof(char) * 32);
g_memset(text, 0, sizeof(char) * 256);
g_memset(passwd_file, 0, sizeof(char) * 256);
/* check to limit concurrent sessions */
if (g_session_count >= g_cfg->sess.max_sessions)
{
log_message(LOG_LEVEL_INFO, "max concurrent session limit "
"exceeded. login for user %s denied", username);
return 0;
}
temp = (struct session_chain *)g_malloc(sizeof(struct session_chain), 0);
if (temp == 0)
{
log_message(LOG_LEVEL_ERROR, "cannot create new chain "
"element - user %s", username);
return 0;
}
temp->item = (struct session_item *)g_malloc(sizeof(struct session_item), 0);
if (temp->item == 0)
{
g_free(temp);
log_message(LOG_LEVEL_ERROR, "cannot create new session "
"item - user %s", username);
return 0;
}
display = session_get_aval_display_from_chain();
if (display == 0)
{
g_free(temp->item);
g_free(temp);
return 0;
}
pid = g_fork();
if (pid == -1)
{
}
else if (pid == 0) /* child sesman */
{
g_tcp_close(g_sck);
g_tcp_close(g_thread_sck);
g_sprintf(geometry, "%dx%d", width, height);
g_sprintf(depth, "%d", bpp);
g_sprintf(screen, ":%d", display);
wmpid = g_fork();
if (wmpid == -1)
{
}
else if (wmpid == 0) /* child (child sesman) xserver */
{
wait_for_xserver(display);
auth_start_session(data, display);
pampid = g_fork();
if (pampid == -1)
{
}
else if (pampid == 0) /* child: X11/client */
{
env_set_user(username, 0, display);
if (x_server_running(display))
{
auth_set_env(data);
if (directory != 0)
{
if (directory[0] != 0)
{
g_set_current_dir(directory);
}
}
if (program != 0)
{
if (program[0] != 0)
{
g_execlp3(program, program, 0);
log_message(LOG_LEVEL_ALWAYS,
"error starting program %s for user %s - pid %d",
program, username, g_getpid());
}
}
/* try to execute user window manager if enabled */
if (g_cfg->enable_user_wm)
{
g_sprintf(text, "%s/%s", g_getenv("HOME"), g_cfg->user_wm);
if (g_file_exist(text))
{
g_execlp3(text, g_cfg->user_wm, 0);
log_message(LOG_LEVEL_ALWAYS, "error starting user "
"wm for user %s - pid %d", username, g_getpid());
/* logging parameters */
log_message(LOG_LEVEL_DEBUG, "errno: %d, "
"description: %s", errno, g_get_strerror());
log_message(LOG_LEVEL_DEBUG, "execlp3 parameter "
"list:");
log_message(LOG_LEVEL_DEBUG, " argv[0] = %s",
text);
log_message(LOG_LEVEL_DEBUG, " argv[1] = %s",
g_cfg->user_wm);
}
}
/* if we're here something happened to g_execlp3
so we try running the default window manager */
g_sprintf(text, "%s/%s", XRDP_CFG_PATH, g_cfg->default_wm);
g_execlp3(text, g_cfg->default_wm, 0);
log_message(LOG_LEVEL_ALWAYS, "error starting default "
"wm for user %s - pid %d", username, g_getpid());
/* logging parameters */
log_message(LOG_LEVEL_DEBUG, "errno: %d, description: "
"%s", errno, g_get_strerror());
log_message(LOG_LEVEL_DEBUG, "execlp3 parameter list:");
log_message(LOG_LEVEL_DEBUG, " argv[0] = %s",
text);
log_message(LOG_LEVEL_DEBUG, " argv[1] = %s",
g_cfg->default_wm);
/* still a problem starting window manager just start xterm */
g_execlp3("xterm", "xterm", 0);
/* should not get here */
log_message(LOG_LEVEL_ALWAYS, "error starting xterm "
"for user %s - pid %d", username, g_getpid());
/* logging parameters */
log_message(LOG_LEVEL_DEBUG, "errno: %d, description: "
"%s", errno, g_get_strerror());
}
else
{
log_message(LOG_LEVEL_ERROR, "another Xserver might "
"already be active on display %d - see log", display);
}
log_message(LOG_LEVEL_DEBUG, "aborting connection...");
g_exit(0);
}
else
{
g_waitpid(pampid);
auth_stop_session(data);
g_deinit();
g_exit(0);
}
}
else /* parent (child sesman) */
{
xpid = g_fork();
if (xpid == -1)
{
}
else if (xpid == 0) /* child */
{
env_set_user(username, passwd_file, display);
env_check_password_file(passwd_file, password);
g_snprintf(text, 255, "%d", g_cfg->sess.max_idle_time);
g_setenv("XRDP_SESMAN_MAX_IDLE_TIME", text, 1);
g_snprintf(text, 255, "%d", g_cfg->sess.max_disc_time);
g_setenv("XRDP_SESMAN_MAX_DISC_TIME", text, 1);
g_snprintf(text, 255, "%d", g_cfg->sess.kill_disconnected);
g_setenv("XRDP_SESMAN_KILL_DISCONNECTED", text, 1);
if (type == SESMAN_SESSION_TYPE_XORG)
{
xserver_params = list_create();
xserver_params->auto_free = 1;
/* these are the must have parameters */
list_add_item(xserver_params, (long) g_strdup("/usr/bin/Xorg"));
list_add_item(xserver_params, (long) g_strdup(screen));
/* additional parameters from sesman.ini file */
list_append_list_strdup(g_cfg->xorg_params, xserver_params, 0);
/* make sure it ends with a zero */
list_add_item(xserver_params, 0);
pp1 = (char **) xserver_params->items;
log_message(LOG_LEVEL_INFO, "%s", dumpItemsToString(xserver_params, execvpparams, 2048));
/* some args are passed via env vars */
g_sprintf(geometry, "%d", width);
g_setenv("XRDP_START_WIDTH", geometry, 1);
g_sprintf(geometry, "%d", height);
g_setenv("XRDP_START_HEIGHT", geometry, 1);
/* fire up Xorg */
g_execvp("/usr/bin/Xorg", pp1);
}
else if (type == SESMAN_SESSION_TYPE_XVNC)
{
xserver_params = list_create();
xserver_params->auto_free = 1;
/* these are the must have parameters */
list_add_item(xserver_params, (long)g_strdup("Xvnc"));
list_add_item(xserver_params, (long)g_strdup(screen));
list_add_item(xserver_params, (long)g_strdup("-geometry"));
list_add_item(xserver_params, (long)g_strdup(geometry));
list_add_item(xserver_params, (long)g_strdup("-depth"));
list_add_item(xserver_params, (long)g_strdup(depth));
list_add_item(xserver_params, (long)g_strdup("-rfbauth"));
list_add_item(xserver_params, (long)g_strdup(passwd_file));
/* additional parameters from sesman.ini file */
//config_read_xserver_params(SESMAN_SESSION_TYPE_XVNC,
// xserver_params);
list_append_list_strdup(g_cfg->vnc_params, xserver_params, 0);
/* make sure it ends with a zero */
list_add_item(xserver_params, 0);
pp1 = (char **)xserver_params->items;
log_message(LOG_LEVEL_INFO, "%s", dumpItemsToString(xserver_params, execvpparams, 2048));
g_execvp("Xvnc", pp1);
}
else if (type == SESMAN_SESSION_TYPE_XRDP)
{
xserver_params = list_create();
xserver_params->auto_free = 1;
/* these are the must have parameters */
list_add_item(xserver_params, (long)g_strdup("X11rdp"));
list_add_item(xserver_params, (long)g_strdup(screen));
list_add_item(xserver_params, (long)g_strdup("-geometry"));
list_add_item(xserver_params, (long)g_strdup(geometry));
list_add_item(xserver_params, (long)g_strdup("-depth"));
list_add_item(xserver_params, (long)g_strdup(depth));
/* additional parameters from sesman.ini file */
//config_read_xserver_params(SESMAN_SESSION_TYPE_XRDP,
// xserver_params);
list_append_list_strdup(g_cfg->rdp_params, xserver_params, 0);
/* make sure it ends with a zero */
list_add_item(xserver_params, 0);
pp1 = (char **)xserver_params->items;
log_message(LOG_LEVEL_INFO, "%s", dumpItemsToString(xserver_params, execvpparams, 2048));
g_execvp("X11rdp", pp1);
}
else
{
log_message(LOG_LEVEL_ALWAYS, "bad session type - "
"user %s - pid %d", username, g_getpid());
g_exit(1);
}
/* should not get here */
log_message(LOG_LEVEL_ALWAYS, "error starting X server "
"- user %s - pid %d", username, g_getpid());
/* logging parameters */
log_message(LOG_LEVEL_DEBUG, "errno: %d, description: "
"%s", errno, g_get_strerror());
log_message(LOG_LEVEL_DEBUG, "execve parameter list size: "
"%d", (xserver_params)->count);
for (i = 0; i < (xserver_params->count); i++)
{
log_message(LOG_LEVEL_DEBUG, " argv[%d] = %s",
i, (char *)list_get_item(xserver_params, i));
}
list_delete(xserver_params);
g_exit(1);
}
else /* parent (child sesman)*/
{
wait_for_xserver(display);
g_snprintf(text, 255, "%d", display);
g_setenv("XRDP_SESSVC_DISPLAY", text, 1);
g_snprintf(text, 255, ":%d.0", display);
g_setenv("DISPLAY", text, 1);
/* new style waiting for clients */
session_start_sessvc(xpid, wmpid, data, username, display);
}
}
}
else /* parent sesman process */
{
temp->item->pid = pid;
temp->item->display = display;
temp->item->width = width;
temp->item->height = height;
temp->item->bpp = bpp;
temp->item->data = data;
g_strncpy(temp->item->client_ip, client_ip, 255); /* store client ip data */
g_strncpy(temp->item->name, username, 255);
ltime = g_time1();
localtime_r(&ltime, &stime);
temp->item->connect_time.year = (tui16)(stime.tm_year + 1900);
temp->item->connect_time.month = (tui8)stime.tm_mon;
temp->item->connect_time.day = (tui8)stime.tm_mday;
temp->item->connect_time.hour = (tui8)stime.tm_hour;
temp->item->connect_time.minute = (tui8)stime.tm_min;
zero_time(&(temp->item->disconnect_time));
zero_time(&(temp->item->idle_time));
temp->item->type = type;
temp->item->status = SESMAN_SESSION_STATUS_ACTIVE;
temp->next = g_sessions;
g_sessions = temp;
g_session_count++;
}
return display;
}
/******************************************************************************/
/* called with the main thread */
static int APP_CC
session_reconnect_fork(int display, char *username)
{
int pid;
char text[256];
pid = g_fork();
if (pid == -1)
{
}
else if (pid == 0)
{
env_set_user(username, 0, display);
g_snprintf(text, 255, "%s/%s", XRDP_CFG_PATH, "reconnectwm.sh");
if (g_file_exist(text))
{
g_execlp3(text, g_cfg->default_wm, 0);
}
g_exit(0);
}
return display;
}
/******************************************************************************/
/* called by a worker thread, ask the main thread to call session_sync_start
and wait till done */
int DEFAULT_CC
session_start(int width, int height, int bpp, char *username, char *password,
long data, tui8 type, char *domain, char *program,
char *directory, char *client_ip)
{
int display;
/* lock mutex */
lock_sync_acquire();
/* set shared vars */
g_sync_cmd = 0;
g_sync_width = width;
g_sync_height = height;
g_sync_bpp = bpp;
g_sync_username = username;
g_sync_password = password;
g_sync_domain = domain;
g_sync_program = program;
g_sync_directory = directory;
g_sync_client_ip = client_ip;
g_sync_data = data;
g_sync_type = type;
/* set event for main thread to see */
g_set_wait_obj(g_sync_event);
/* wait for main thread to get done */
lock_sync_sem_acquire();
/* read result(display) from shared var */
display = g_sync_result;
/* unlock mutex */
lock_sync_release();
return display;
}
/******************************************************************************/
/* called by a worker thread, ask the main thread to call session_sync_start
and wait till done */
int DEFAULT_CC
session_reconnect(int display, char *username)
{
/* lock mutex */
lock_sync_acquire();
/* set shared vars */
g_sync_cmd = 1;
g_sync_width = display;
g_sync_username = username;
/* set event for main thread to see */
g_set_wait_obj(g_sync_event);
/* wait for main thread to get done */
lock_sync_sem_acquire();
/* unlock mutex */
lock_sync_release();
return 0;
}
/******************************************************************************/
/* called with the main thread */
int APP_CC
session_sync_start(void)
{
if (g_sync_cmd == 0)
{
g_sync_result = session_start_fork(g_sync_width, g_sync_height, g_sync_bpp,
g_sync_username, g_sync_password,
g_sync_data, g_sync_type, g_sync_domain,
g_sync_program, g_sync_directory,
g_sync_client_ip);
}
else
{
/* g_sync_width is really display */
g_sync_result = session_reconnect_fork(g_sync_width, g_sync_username);
}
lock_sync_sem_release();
return 0;
}
/******************************************************************************/
int DEFAULT_CC
session_kill(int pid)
{
struct session_chain *tmp;
struct session_chain *prev;
/*THREAD-FIX require chain lock */
lock_chain_acquire();
tmp = g_sessions;
prev = 0;
while (tmp != 0)
{
if (tmp->item == 0)
{
log_message(LOG_LEVEL_ERROR, "session descriptor for "
"pid %d is null!", pid);
if (prev == 0)
{
/* prev does no exist, so it's the first element - so we set
g_sessions */
g_sessions = tmp->next;
}
else
{
prev->next = tmp->next;
}
/*THREAD-FIX release chain lock */
lock_chain_release();
return SESMAN_SESSION_KILL_NULLITEM;
}
if (tmp->item->pid == pid)
{
/* deleting the session */
log_message(LOG_LEVEL_INFO, "++ terminated session: username %s, display :%d.0, session_pid %d, ip %s", tmp->item->name, tmp->item->display, tmp->item->pid, tmp->item->client_ip);
g_free(tmp->item);
if (prev == 0)
{
/* prev does no exist, so it's the first element - so we set
g_sessions */
g_sessions = tmp->next;
}
else
{
prev->next = tmp->next;
}
g_free(tmp);
g_session_count--;
/*THREAD-FIX release chain lock */
lock_chain_release();
return SESMAN_SESSION_KILL_OK;
}
/* go on */
prev = tmp;
tmp = tmp->next;
}
/*THREAD-FIX release chain lock */
lock_chain_release();
return SESMAN_SESSION_KILL_NOTFOUND;
}
/******************************************************************************/
void DEFAULT_CC
session_sigkill_all()
{
struct session_chain *tmp;
/*THREAD-FIX require chain lock */
lock_chain_acquire();
tmp = g_sessions;
while (tmp != 0)
{
if (tmp->item == 0)
{
log_message(LOG_LEVEL_ERROR, "found null session "
"descriptor!");
}
else
{
g_sigterm(tmp->item->pid);
}
/* go on */
tmp = tmp->next;
}
/*THREAD-FIX release chain lock */
lock_chain_release();
}
/******************************************************************************/
struct session_item *DEFAULT_CC
session_get_bypid(int pid)
{
struct session_chain *tmp;
struct session_item *dummy;
dummy = g_malloc(sizeof(struct session_item), 1);
if (0 == dummy)
{
log_message(LOG_LEVEL_ERROR, "internal error", pid);
return 0;
}
/*THREAD-FIX require chain lock */
lock_chain_acquire();
tmp = g_sessions;
while (tmp != 0)
{
if (tmp->item == 0)
{
log_message(LOG_LEVEL_ERROR, "session descriptor for "
"pid %d is null!", pid);
/*THREAD-FIX release chain lock */
lock_chain_release();
return 0;
}
if (tmp->item->pid == pid)
{
/*THREAD-FIX release chain lock */
g_memcpy(dummy, tmp->item, sizeof(struct session_item));
lock_chain_release();
/*return tmp->item;*/
return dummy;
}
/* go on */
tmp = tmp->next;
}
/*THREAD-FIX release chain lock */
lock_chain_release();
return 0;
}
/******************************************************************************/
struct SCP_DISCONNECTED_SESSION *
session_get_byuser(char *user, int *cnt, unsigned char flags)
{
struct session_chain *tmp;
struct SCP_DISCONNECTED_SESSION *sess;
int count;
int index;
count = 0;
/*THREAD-FIX require chain lock */
lock_chain_acquire();
tmp = g_sessions;
while (tmp != 0)
{
LOG_DBG("user: %s", user);
if ((NULL == user) || (!g_strncasecmp(user, tmp->item->name, 256)))
{
LOG_DBG("session_get_byuser: status=%d, flags=%d, "
"result=%d", (tmp->item->status), flags,
((tmp->item->status) & flags));
if ((tmp->item->status) & flags)
{
count++;
}
}
/* go on */
tmp = tmp->next;
}
if (count == 0)
{
(*cnt) = 0;
/*THREAD-FIX release chain lock */
lock_chain_release();
return 0;
}
/* malloc() an array of disconnected sessions */
sess = g_malloc(count *sizeof(struct SCP_DISCONNECTED_SESSION), 1);
if (sess == 0)
{
(*cnt) = 0;
/*THREAD-FIX release chain lock */
lock_chain_release();
return 0;
}
tmp = g_sessions;
index = 0;
while (tmp != 0)
{
#warning FIXME: we should get only disconnected sessions!
if ((NULL == user) || (!g_strncasecmp(user, tmp->item->name, 256)))
{
if ((tmp->item->status) & flags)
{
(sess[index]).SID = tmp->item->pid;
(sess[index]).type = tmp->item->type;
(sess[index]).height = tmp->item->height;
(sess[index]).width = tmp->item->width;
(sess[index]).bpp = tmp->item->bpp;
#warning FIXME: setting idle times and such
/*(sess[index]).connect_time.year = tmp->item->connect_time.year;
(sess[index]).connect_time.month = tmp->item->connect_time.month;
(sess[index]).connect_time.day = tmp->item->connect_time.day;
(sess[index]).connect_time.hour = tmp->item->connect_time.hour;
(sess[index]).connect_time.minute = tmp->item->connect_time.minute;
(sess[index]).disconnect_time.year = tmp->item->disconnect_time.year;
(sess[index]).disconnect_time.month = tmp->item->disconnect_time.month;
(sess[index]).disconnect_time.day = tmp->item->disconnect_time.day;
(sess[index]).disconnect_time.hour = tmp->item->disconnect_time.hour;
(sess[index]).disconnect_time.minute = tmp->item->disconnect_time.minute;
(sess[index]).idle_time.year = tmp->item->idle_time.year;
(sess[index]).idle_time.month = tmp->item->idle_time.month;
(sess[index]).idle_time.day = tmp->item->idle_time.day;
(sess[index]).idle_time.hour = tmp->item->idle_time.hour;
(sess[index]).idle_time.minute = tmp->item->idle_time.minute;*/
(sess[index]).conn_year = tmp->item->connect_time.year;
(sess[index]).conn_month = tmp->item->connect_time.month;
(sess[index]).conn_day = tmp->item->connect_time.day;
(sess[index]).conn_hour = tmp->item->connect_time.hour;
(sess[index]).conn_minute = tmp->item->connect_time.minute;
(sess[index]).idle_days = tmp->item->idle_time.day;
(sess[index]).idle_hours = tmp->item->idle_time.hour;
(sess[index]).idle_minutes = tmp->item->idle_time.minute;
index++;
}
}
/* go on */
tmp = tmp->next;
}
/*THREAD-FIX release chain lock */
lock_chain_release();
(*cnt) = count;
return sess;
}
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