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xrdp-proprietary
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making libscp a real library

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some fixes in configuration options
ulab-original
ilsimo 18 years ago
parent d0e066ee8b
commit f22b5b42a7
29 changed files with 2603 additions and 228 deletions
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21
sesman/Makefile
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@ -1,10 +1,9 @@
# sesman makefile # sesman makefile
LIBSCPOBJ = libscp_vX.o libscp_v0.o libscp_v1s.o LIBSCPOBJ = libscp_vX.o libscp_v0.o libscp_v1s.o
SESMANOBJ = sesman.o config.o tcp.o sig.o session.o env.o \ SESMANOBJ = sesman.o config.o sig.o session.o env.o \
os_calls.o d3des.o list.o file.o log.o access.o \ os_calls.o d3des.o list.o file.o log.o access.o \
scp.o scp_v0.o scp_v1.o thread.o lock.o \ scp.o scp_v0.o scp_v1.o thread.o lock.o
$(LIBSCPOBJ)
SESSVCOBJ = sessvc.o os_calls.o SESSVCOBJ = sessvc.o os_calls.o
@ -19,18 +18,19 @@ DEFINES = -DSESMAN_CFG_FILE=\"$(CFGDIR)/sesman.ini\" \
-DSESMAN_SESSVC_FILE=\"$(DESTDIR)/sessvc\" \ -DSESMAN_SESSVC_FILE=\"$(DESTDIR)/sessvc\" \
-DDEBUG -DDEBUG
CFLAGS = -Wall -O2 -I../common -I/usr/include/nptl $(DEFINES) CFLAGS = -Wall -O2 -I../common -I/usr/include/nptl -I./libscp $(DEFINES)
LDFLAGS = -L /usr/gnu/lib -I/usr/include/nptl -L/usr/lib/nptl -lpthread -ldl $(DEFINES) LDFLAGS = -L /usr/gnu/lib -I/usr/include/nptl -L/usr/lib/nptl -lpthread -ldl -Wl,-rpath,./libscp -L./libscp -lscp $(DEFINES)
C_OS_FLAGS = $(CFLAGS) -c C_OS_FLAGS = $(CFLAGS) -c
CC = gcc CC = gcc
all: pam tools all: libscp pam tools
nopam: no-pam tools nopam: libscp no-pam tools
kerberos: kerberos-base tools kerberos: libscp kerberos-base tools
no-pam: $(SESMANOBJ) verify_user.o no-pam: $(SESMANOBJ) verify_user.o
make -C libscp
$(CC) $(LDFLAGS) -o sesman $(SESMANOBJ) verify_user.o -lcrypt $(CC) $(LDFLAGS) -o sesman $(SESMANOBJ) verify_user.o -lcrypt
pam: $(SESMANOBJ) verify_user_pam.o pam: $(SESMANOBJ) verify_user_pam.o
@ -48,9 +48,13 @@ sessvc: $(SESSVCOBJ)
tools: sessvc tools: sessvc
make -C tools make -C tools
libscp:
make -C libscp
clean: clean:
rm -f $(SESMANOBJ) verify_user.o verify_user_pam.o verify_user_pam_userpass.o sesman sesrun.o sesrun sessvc.o sessvc rm -f $(SESMANOBJ) verify_user.o verify_user_pam.o verify_user_pam_userpass.o sesman sesrun.o sesrun sessvc.o sessvc
make -C tools clean make -C tools clean
make -C libscp clean
install: install:
install sesman $(DESTDIR)/sesman install sesman $(DESTDIR)/sesman
@ -58,6 +62,7 @@ install:
install sesman.ini $(CFGDIR)/sesman.ini install sesman.ini $(CFGDIR)/sesman.ini
install sessvc $(DESTDIR)/sessvc install sessvc $(DESTDIR)/sessvc
make -C tools install make -C tools install
make -C libscp install
installdeb: installdeb:
install sesman $(DESTDIRDEB)/usr/lib/xrdp/sesman install sesman $(DESTDIRDEB)/usr/lib/xrdp/sesman

83
sesman/config.c
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@ -78,6 +78,10 @@ config_read", SESMAN_CFG_FILE);
/* read global config */ /* read global config */
config_read_globals(fd, cfg, param_n, param_v); config_read_globals(fd, cfg, param_n, param_v);
/* read Xvnc/X11rdp parameter list */
config_read_vnc_params(fd, cfg, param_n, param_v);
config_read_rdp_params(fd, cfg, param_n, param_v);
/* read logging config */ /* read logging config */
config_read_logging(fd, &(cfg->log), param_n, param_v); config_read_logging(fd, &(cfg->log), param_n, param_v);
@ -112,6 +116,7 @@ config_read_globals(int file, struct config_sesman* cf, struct list* param_n,
cf->enable_user_wm = 0; cf->enable_user_wm = 0;
cf->user_wm[0] = '\0'; cf->user_wm[0] = '\0';
cf->default_wm[0] = '\0'; cf->default_wm[0] = '\0';
cf->auth_file_path = 0;
file_read_section(file, SESMAN_CFG_GLOBALS, param_n, param_v); file_read_section(file, SESMAN_CFG_GLOBALS, param_n, param_v);
for (i = 0; i < param_n->count; i++) for (i = 0; i < param_n->count; i++)
@ -137,6 +142,10 @@ config_read_globals(int file, struct config_sesman* cf, struct list* param_n,
{ {
g_strncpy(cf->listen_address, (char*)list_get_item(param_v, i), 31); 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));
}
} }
/* checking for missing required parameters */ /* checking for missing required parameters */
@ -164,6 +173,7 @@ config_read_globals(int file, struct config_sesman* cf, struct list* param_n,
g_printf("\tEnableUserWindowManager: %i\r\n", cf->enable_user_wm); g_printf("\tEnableUserWindowManager: %i\r\n", cf->enable_user_wm);
g_printf("\tUserWindowManager: %s\r\n", cf->user_wm); g_printf("\tUserWindowManager: %s\r\n", cf->user_wm);
g_printf("\tDefaultWindowManager: %s\r\n", cf->default_wm); g_printf("\tDefaultWindowManager: %s\r\n", cf->default_wm);
g_printf("\tAuthFilePath: %s\r\n", ((cf->auth_file_path) ? (cf->auth_file_path) : ("disabled")));
return 0; return 0;
} }
@ -346,49 +356,58 @@ config_read_sessions(int file, struct config_sessions* se, struct list* param_n,
} }
/******************************************************************************/ /******************************************************************************/
/* returns in params a list of parameters that need to be freed */
/* returns error */
int DEFAULT_CC int DEFAULT_CC
config_read_xserver_params(int server_type, struct list* param_array) config_read_rdp_params(int file, struct config_sesman* cs, struct list* param_n,
struct list* param_v)
{ {
struct list* names; int i;
struct list* params;
int fd; list_clear(param_v);
char section_name[16]; list_clear(param_n);
cs->rdp_params=list_create();
if (server_type == SESMAN_SESSION_TYPE_XRDP) file_read_section(file, SESMAN_CFG_RDP_PARAMS, param_n, param_v);
for (i = 0; i < param_n->count; i++)
{ {
g_strncpy(section_name, "X11rdp", 15); list_add_item(cs->rdp_params, (long)g_strdup((char*)list_get_item(param_v, i)));
} }
else if (server_type == SESMAN_SESSION_TYPE_XVNC)
/* printing security config */
g_printf("X11rdp parameters:\r\n");
for (i = 0; i < cs->rdp_params->count; i++)
{ {
g_strncpy(section_name, "Xvnc", 15); g_printf("\tParameter %02d %s\r\n", i, (char*)list_get_item(cs->rdp_params, i));
} }
else
{ return 0;
/* error */
log_message(LOG_LEVEL_ALWAYS, "error unknown type in \
config_read_xserver_params");
return 1;
} }
fd = g_file_open(SESMAN_CFG_FILE);
if (-1 == fd) /******************************************************************************/
int DEFAULT_CC
config_read_vnc_params(int file, struct config_sesman* cs, struct list* param_n,
struct list* param_v)
{ {
/* error */ int i;
log_message(LOG_LEVEL_ALWAYS, "error opening %s in \
config_read_xserver_params %s", SESMAN_CFG_FILE, g_get_strerror()); list_clear(param_v);
return 1; list_clear(param_n);
cs->vnc_params=list_create();
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)));
} }
names = list_create();
names->auto_free = 1; /* printing security config */
params = list_create(); g_printf("Xvnc parameters:\r\n");
params->auto_free = 1; for (i = 0; i < cs->vnc_params->count; i++)
if (file_read_section(fd, section_name, names, params) == 0)
{ {
list_append_list_strdup(params, param_array, 0); g_printf("\tParameter %02d %s\r\n", i, (char*)list_get_item(cs->vnc_params, i));
} }
g_file_close(fd);
list_delete(names);
list_delete(params);
return 0; return 0;
} }

46
sesman/config.h
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@ -49,6 +49,10 @@
#define SESMAN_CFG_ENABLE_USERWM "EnableUserWindowManager" #define SESMAN_CFG_ENABLE_USERWM "EnableUserWindowManager"
#define SESMAN_CFG_USERWM "UserWindowManager" #define SESMAN_CFG_USERWM "UserWindowManager"
#define SESMAN_CFG_MAX_SESSION "MaxSessions" #define SESMAN_CFG_MAX_SESSION "MaxSessions"
#define SESMAN_CFG_AUTH_FILE_PATH "AuthFilePath"
#define SESMAN_CFG_RDP_PARAMS "X11rdp"
#define SESMAN_CFG_VNC_PARAMS "Xvnc"
#define SESMAN_CFG_LOGGING "Logging" #define SESMAN_CFG_LOGGING "Logging"
#define SESMAN_CFG_LOG_FILE "LogFile" #define SESMAN_CFG_LOG_FILE "LogFile"
@ -167,6 +171,21 @@ struct config_sesman
* @brief Default window manager * @brief Default window manager
*/ */
char user_wm[32]; char user_wm[32];
/**
* @var auth_file_path
* @brief Auth file path
*/
char* auth_file_path;
/**
* @var vnc_params
* @brief Xvnc additional parameter list
*/
struct list* vnc_params;
/**
* @var rdp_params
* @brief X11rdp additional parameter list
*/
struct list* rdp_params;
/** /**
* @var log * @var log
* @brief Log configuration struct * @brief Log configuration struct
@ -252,13 +271,32 @@ config_read_sessions(int file, struct config_sessions* ss,
/** /**
* *
* @brief Reads sesman [X11rdp, Xvnc, ...] configuration section * @brief Reads sesman [X11rdp] configuration section
* @param server_type integer representing server type * @param file configuration file descriptor
* @param param_array pointer to list to add strings to * @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
*
*/
int DEFAULT_CC
config_read_rdp_params(int file, struct config_sesman* cs, struct list* param_n,
struct list* param_v);
/**
*
* @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 * @return 0 on success, 1 on failure
* *
*/ */
int DEFAULT_CC int DEFAULT_CC
config_read_xserver_params(int server_type, struct list* param_array); config_read_vnc_params(int file, struct config_sesman* cs, struct list* param_n,
struct list* param_v);
#endif #endif

11
sesman/env.c
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@ -31,6 +31,7 @@
#include "grp.h" #include "grp.h"
extern unsigned char g_fixedkey[8]; /* in sesman.c */ extern unsigned char g_fixedkey[8]; /* in sesman.c */
extern struct config_sesman g_cfg;
/******************************************************************************/ /******************************************************************************/
int DEFAULT_CC int DEFAULT_CC
@ -97,9 +98,19 @@ env_set_user(char* username, char* passwd_file, int display)
g_setenv("DISPLAY", text, 1); g_setenv("DISPLAY", text, 1);
if (passwd_file != 0) if (passwd_file != 0)
{ {
if (0==g_cfg.auth_file_path)
{
/* if no auth_file_path is set, then we go for $HOME/.vnc/sesman_passwd */
g_mkdir(".vnc"); g_mkdir(".vnc");
g_sprintf(passwd_file, "%s/.vnc/sesman_passwd", pw_dir); g_sprintf(passwd_file, "%s/.vnc/sesman_passwd", pw_dir);
} }
else
{
/* we use auth_file_path as requested */
g_sprintf(passwd_file, g_cfg.auth_file_path, username);
}
LOG_DBG("pass file: %s", passwd_file);
}
} }
} }
else else

54
sesman/libscp/Makefile
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@ -0,0 +1,54 @@
# sesman makefile
LIBSCPOBJ = libscp_vX.o libscp_v0.o \
libscp_v1s.o libscp_v1c.o \
libscp_init.o libscp_lock.o libscp_tcp.o \
os_calls.o
DESTDIR = /usr/local/xrdp
CFGDIR = /etc/xrdp
PIDDIR = /var/run
MANDIR = /usr/local/man
DOCDIR = /usr/doc/xrdp
LIBDIR = /usr/lib
DESTDIRDEB = /tmp
LIBSCPLNAME=libscp.so
LIBSCPSONAME=$(LIBSCPLNAME).1
LIBSCPFNAME=$(LIBSCPSONAME).0.0
DEFINES = -DSESMAN_CFG_FILE=\"$(CFGDIR)/sesman.ini\" \
-DSESMAN_PID_FILE=\"$(PIDDIR)/sesman.pid\" \
-DSESMAN_SESSVC_FILE=\"$(DESTDIR)/sessvc\" \
-DDEBUG
CFLAGS = -Wall -O2 -I../../common -I/usr/include/nptl -fPIC -g $(DEFINES)
LDFLAGS = -shared -Wl,-soname,$(LIBSCPSONAME) -L /usr/gnu/lib -I/usr/include/nptl -L/usr/lib/nptl -lpthread $(DEFINES)
C_OS_FLAGS = $(CFLAGS) -c
CC = gcc
all: $(LIBSCPOBJ)
$(CC) $(LDFLAGS) -o $(LIBSCPFNAME) $(LIBSCPOBJ)
ln -s $(LIBSCPFNAME) $(LIBSCPLNAME)
clean:
rm -f $(LIBSCPOBJ) $(LIBSCPFNAME) $(LIBSCPLNAME)
install:
install $(LIBSCPFNAME) $(LIBDIR)/$(LIBSCPFNAME)
echo "cd $(LIBDIR) && ln -s $(LIBSCPSONAME) $(LIBSCPLNAME)" | /bin/sh
ldconfig
installdeb:
install $(LIBSCPFNAME) $(DESTDIRDEB)/$(LIBDIR)/$(LIBSCPFNAME)
echo "cd $(DESTDIRDEB)/$(LIBDIR) && ln -s $(LIBSCPSONAME) $(LIBSCPLNAME)" | /bin/sh
os_calls.o: ../../common/os_calls.c
$(CC) $(C_OS_FLAGS) ../../common/os_calls.c
list.o: ../common/list.c
$(CC) $(C_OS_FLAGS) ../common/list.c
log.o: ../common/log.c
$(CC) $(C_OS_FLAGS) -DLOG_ENABLE_THREAD ../common/log.c

42
sesman/libscp/libscp.h
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@ -0,0 +1,42 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp.h
* @brief libscp main header
* @author Simone Fedele
*
*/
#ifndef LIBSCP_H
#define LIBSCP_H
#include "libscp_types.h"
#include "libscp_init.h"
#include "libscp_tcp.h"
#include "libscp_lock.h"
#include "libscp_vX.h"
#include "libscp_v0.h"
#include "libscp_v1s.h"
#include "libscp_v1c.h"
#endif

59
sesman/libscp/libscp_init.c
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@ -0,0 +1,59 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_init.c
* @brief libscp initialization code
* @author Simone Fedele
*
*/
#include "libscp_init.h"
/* server API */
int DEFAULT_CC
scp_init(void)
{
scp_lock_init();
return 0;
}
struct SCP_CONNECTION*
scp_make_connection(int sck)
{
struct SCP_CONNECTION* conn;
conn = g_malloc(sizeof(struct SCP_CONNECTION), 0);
if (0 == conn)
{
return 0;
}
conn->in_sck=sck;
make_stream(conn->in_s);
init_stream(conn->in_s, 8196);
make_stream(conn->out_s);
init_stream(conn->out_s, 8196);
return conn;
}

59
sesman/libscp/libscp_init.c~
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@ -0,0 +1,59 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_init.c
* @brief libscp initialization code
* @author Simone Fedele
*
*/
#include "libscp_init.h"
/* server API */
int DEFAULT_CC
scp_init(void)
{
scp_lock_init();
return 0;
}
struct SCP_CONNECTION*
scp_make_connection(int sck)
{
struct SCP_CONNECTION* conn;
conn = g_malloc(sizeof(struct SCP_CONNECTION), 0);
if (0 == conn)
{
return 0;
}
conn->in_sck=sck;
make_stream(conn->in_s);
init_stream(conn->in_s, 8196);
make_stream(conn->out_s);
init_stream(conn->out_s, 8196);
return conn;
}

55
sesman/libscp/libscp_init.h
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@ -0,0 +1,55 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_init.h
* @brief libscp initialization code header
* @author Simone Fedele
*
*/
#ifndef LIBSCP_INIT_H
#define LIBSCP_INIT_H
#include "libscp.h"
/**
*
* @brief version neutral server accept function
* @param c connection descriptor
* @param s session descriptor pointer address.
* it will return a newely allocated descriptor.
* It this memory needs to be g_free()d
*
*/
int DEFAULT_CC
scp_init(void);
/**
*
* @brief mmm
* @param sck
*
*/
struct SCP_CONNECTION*
scp_make_connection(int sck);
#endif

146
sesman/libscp/libscp_lock.c
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@ -0,0 +1,146 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
session manager
linux only
*/
#include "libscp_lock.h"
#include <semaphore.h>
#include <pthread.h>
pthread_mutex_t lock_fork; /* this lock protects the counters */
pthread_mutexattr_t lock_fork_attr; /* mutex attributes */
sem_t lock_fork_req; /* semaphore on which the process that are going to fork suspend on */
sem_t lock_fork_wait; /* semaphore on which the suspended process wait on */
int lock_fork_forkers_count; /* threads that want to fork */
int lock_fork_blockers_count; /* threads thar are blocking fork */
int lock_fork_waiting_count; /* threads suspended until the fork finishes */
void DEFAULT_CC
scp_lock_init(void)
{
/* initializing fork lock */
pthread_mutexattr_init(&lock_fork_attr);
pthread_mutex_init(&lock_fork, &lock_fork_attr);
sem_init(&lock_fork_req, 0, 0);
sem_init(&lock_fork_wait, 0, 0);
/* here we don't use locking because lock_init() should be called BEFORE */
/* any thread is created */
lock_fork_blockers_count=0;
lock_fork_waiting_count=0;
lock_fork_forkers_count=0;
}
/******************************************************************************/
void DEFAULT_CC
scp_lock_fork_request(void)
{
/* lock mutex */
pthread_mutex_lock(&lock_fork);
if (lock_fork_blockers_count == 0)
{
/* if noone is blocking fork(), then we're allowed to fork */
sem_post(&lock_fork_req);
}
lock_fork_forkers_count++;
pthread_mutex_unlock(&lock_fork);
/* we wait to be allowed to fork() */
sem_wait(&lock_fork_req);
}
/******************************************************************************/
void DEFAULT_CC
scp_lock_fork_release(void)
{
pthread_mutex_lock(&lock_fork);
lock_fork_forkers_count--;
/* if there's someone else that want to fork, we let him fork() */
if (lock_fork_forkers_count > 0)
{
sem_post(&lock_fork_req);
}
for (;lock_fork_waiting_count > 0; lock_fork_waiting_count--)
{
/* waking up the other processes */
sem_post(&lock_fork_wait);
}
pthread_mutex_unlock(&lock_fork);
}
/******************************************************************************/
void DEFAULT_CC
scp_lock_fork_critical_section_end(int blocking)
{
//LOG_DBG("lock_fork_critical_secection_end()",0);
/* lock mutex */
pthread_mutex_lock(&lock_fork);
if (blocking == LIBSCP_LOCK_FORK_BLOCKER)
{
lock_fork_blockers_count--;
}
/* if there's someone who wants to fork and we're the last blocking */
/* then we let him go */
if ((lock_fork_blockers_count == 0) && (lock_fork_forkers_count>0))
{
sem_post(&lock_fork_req);
}
pthread_mutex_unlock(&lock_fork);
}
/******************************************************************************/
int DEFAULT_CC
scp_lock_fork_critical_section_start(void)
{
//LOG_DBG("lock_fork_critical_secection_start()",0);
do
{
pthread_mutex_lock(&lock_fork);
/* someone requested to fork */
if (lock_fork_forkers_count > 0)
{
lock_fork_waiting_count++;
pthread_mutex_unlock(&lock_fork);
/* we wait until the fork finishes */
sem_wait(&lock_fork_wait);
}
else
{
/* no fork, so we can go on... */
lock_fork_blockers_count++;
pthread_mutex_unlock(&lock_fork);
return LIBSCP_LOCK_FORK_BLOCKER;
}
} while (1);
/* we'll never get here */
return LIBSCP_LOCK_FORK_WAITING;
}

75
sesman/libscp/libscp_lock.h
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@ -0,0 +1,75 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
#ifndef LIBSCP_LOCK_H
#define LIBSCP_LOCK_H
#include "libscp_types.h"
#define LIBSCP_LOCK_FORK_BLOCKER 1
#define LIBSCP_LOCK_FORK_WAITING 0
/**
*
* @brief initializes all the locks
*
*/
void DEFAULT_CC
scp_lock_init(void);
/**
*
* @brief requires to fork a new child process
*
*/
void DEFAULT_CC
scp_lock_fork_request(void);
/**
*
* @brief releases a fork() request
*
*/
void DEFAULT_CC
scp_lock_fork_release(void);
/**
*
* @brief starts a section that is critical for forking
*
* starts a section that is critical for forking, that is noone can fork()
* while i'm in a critical section. But if someone wanted to fork we have
* to wait until he finishes with lock_fork_release()
*
* @return
*
*/
int DEFAULT_CC
scp_lock_fork_critical_section_start(void);
/**
*
* @brief closes the critical section
*
*/
void DEFAULT_CC
scp_lock_fork_critical_section_end(int blocking);
#endif

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sesman/libscp/libscp_tcp.c
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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file tcp.c
* @brief Tcp stream funcions
* @author Jay Sorg, Simone Fedele
*
*/
#include "libscp_tcp.h"
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
/*****************************************************************************/
int DEFAULT_CC
scp_tcp_force_recv(int sck, char* data, int len)
{
int rcvd;
int block;
block = scp_lock_fork_critical_section_start();
while (len > 0)
{
rcvd = g_tcp_recv(sck, data, len, 0);
if (rcvd == -1)
{
if (g_tcp_last_error_would_block(sck))
{
g_sleep(1);
}
else
{
scp_lock_fork_critical_section_end(block);
return 1;
}
}
else if (rcvd == 0)
{
scp_lock_fork_critical_section_end(block);
return 1;
}
else
{
data += rcvd;
len -= rcvd;
}
}
scp_lock_fork_critical_section_end(block);
return 0;
}
/*****************************************************************************/
int DEFAULT_CC
scp_tcp_force_send(int sck, char* data, int len)
{
int sent;
int block;
block = scp_lock_fork_critical_section_start();
while (len > 0)
{
sent = g_tcp_send(sck, data, len, 0);
if (sent == -1)
{
if (g_tcp_last_error_would_block(sck))
{
g_sleep(1);
}
else
{
scp_lock_fork_critical_section_end(block);
return 1;
}
}
else if (sent == 0)
{
scp_lock_fork_critical_section_end(block);
return 1;
}
else
{
data += sent;
len -= sent;
}
}
scp_lock_fork_critical_section_end(block);
return 0;
}
/*****************************************************************************/
int DEFAULT_CC
scp_tcp_bind(int sck, char* addr, char* port)
{
struct sockaddr_in s;
memset(&s, 0, sizeof(struct sockaddr_in));
s.sin_family = AF_INET;
s.sin_port = htons(atoi(port));
s.sin_addr.s_addr = inet_addr(addr);
return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
}

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sesman/libscp/libscp_tcp.h
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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_tcp.h
* @brief Tcp stream functions declarations
* @author Jay Sorg, Simone Fedele
*
*/
#ifndef LIBSCP_TCP_H
#define LIBSCP_TCP_H
#include "libscp.h"
/**
*
* @brief Force receiving data from tcp stream
* @param sck The socket to read from
* @param data Data buffer
* @param len Data buffer size
* @return 0 on success, 1 on error
*
*/
int DEFAULT_CC
scp_tcp_force_recv(int sck, char* data, int len);
/**
*
* @brief Force sending data to tcp stream
* @param sck the socket to write to
* @param data Data buffer
* @param len Data buffer size
* @return 0 on success, 1 on error
*
*/
int DEFAULT_CC
scp_tcp_force_send(int sck, char* data, int len);
/**
*
* @brief Binds the listening socket
* @param sck Listening socket
* @param addr Listening address
* @param port Listening port
* @return 0 on success, -1 on error
*
*/
int DEFAULT_CC
scp_tcp_bind(int sck, char* addr, char* port);
#endif

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sesman/libscp/libscp_types.h
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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_types.h
* @brief libscp data types definitions
* @author Simone Fedele
*
*/
#ifndef LIBSCP_TYPES_H
#define LIBSCP_TYPES_H
#include "os_calls.h"
#include "parse.h"
#include "arch.h"
//#include "log.h"
#define SCP_SID tui32
#define SCP_DISPLAY tui16
#define SCP_RESOURCE_SHARING_REQUEST_YES 0x01
#define SCP_RESOURCE_SHARING_REQUEST_NO 0x00
#define SCP_SESSION_TYPE_XVNC 0x00
#define SCP_SESSION_TYPE_XRDP 0x01
#define SCP_ADDRESS_TYPE_IPV4 0x00
#define SCP_ADDRESS_TYPE_IPV6 0x01
#define SCP_COMMAND_SET_DEFAULT 0x0000
#define SCP_COMMAND_SET_MANAGE 0x0001
#define SCP_COMMAND_SET_RSR 0x0002
#define SCP_SERVER_MAX_LIST_SIZE 100
#define free_session(s) {g_free((s)->username); g_free((s)->password); g_free((s)->hostname); g_free(s);}
struct SCP_CONNECTION
{
int in_sck;
struct stream* in_s;
struct stream* out_s;
};
struct SCP_SESSION
{
tui8 type;
tui32 version;
tui16 height;
tui16 width;
tui8 bpp;
tui8 rsr;
char locale[18];
char* username;
char* password;
char* hostname;
tui8 addr_type;
tui32 ipv4addr; //htons
tui32 ipv6addr; //should be 128bit
tui16 display;
char* errstr;
};
struct SCP_DISCONNECTED_SESSION
{
tui32 SID;
tui8 type;
tui16 height;
tui16 width;
tui8 bpp;
tui8 idle_days;
tui8 idle_hours;
tui8 idle_minutes;
};
enum SCP_CLIENT_STATES_E
{
SCP_CLIENT_STATE_OK,
SCP_CLIENT_STATE_NETWORK_ERR,
SCP_CLIENT_STATE_VERSION_ERR,
SCP_CLIENT_STATE_SEQUENCE_ERR,
SCP_CLIENT_STATE_SIZE_ERR,
SCP_CLIENT_STATE_INTERNAL_ERR,
SCP_CLIENT_STATE_SESSION_LIST,
SCP_CLIENT_STATE_LIST_OK,
SCP_CLIENT_STATE_RESEND_CREDENTIALS,
SCP_CLIENT_STATE_CONNECTION_DENIED,
SCP_CLIENT_STATE_PWD_CHANGE_REQ,
SCP_CLIENT_STATE_RECONNECT_SINGLE,
SCP_CLIENT_STATE_SELECTION_CANCEL,
SCP_CLIENT_STATE_END
};
enum SCP_SERVER_STATES_E
{
SCP_SERVER_STATE_OK,
SCP_SERVER_STATE_VERSION_ERR,
SCP_SERVER_STATE_NETWORK_ERR,
SCP_SERVER_STATE_SEQUENCE_ERR,
SCP_SERVER_STATE_INTERNAL_ERR,
SCP_SERVER_STATE_SESSION_TYPE_ERR,
SCP_SERVER_STATE_SIZE_ERR,
SCP_SERVER_STATE_SELECTION_CANCEL,
/*SCP_SERVER_STATE_FORCE_NEW,*/
SCP_SERVER_STATE_START_MANAGE,
SCP_SERVER_STATE_END
};
#endif

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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_v0.c
* @brief libscp version 0 code
* @author Simone Fedele
*
*/
#include "libscp_v0.h"
#include "os_calls.h"
/* client API */
/******************************************************************************/
enum SCP_CLIENT_STATES_E scp_v0c_connect(struct SCP_CONNECTION* c, struct SCP_SESSION* s)
{
tui32 version;
tui32 size;
tui16 sz;
init_stream(c->in_s, c->in_s->size);
init_stream(c->out_s, c->in_s->size);
g_tcp_set_non_blocking(c->in_sck);
g_tcp_set_no_delay(c->in_sck);
s_push_layer(c->out_s, channel_hdr, 8);
if (s->type==SCP_SESSION_TYPE_XVNC)
{
out_uint16_be(c->out_s, 0); // code
}
else if (s->type==SCP_SESSION_TYPE_XRDP)
{
out_uint16_be(c->out_s, 10); // code
}
else
{
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
sz = g_strlen(s->username);
out_uint16_be(c->out_s, sz);
out_uint8a(c->out_s, s->username, sz);
sz = g_strlen(s->password);
out_uint16_be(c->out_s,sz);
out_uint8a(c->out_s, s->password, sz);
out_uint16_be(c->out_s, s->width);
out_uint16_be(c->out_s, s->height);
out_uint16_be(c->out_s, s->bpp);
s_mark_end(c->out_s);
s_pop_layer(c->out_s, channel_hdr);
out_uint32_be(c->out_s, 0); // version
out_uint32_be(c->out_s, c->out_s->end - c->out_s->data); // size
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, c->out_s->end - c->out_s->data))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (0 != version)
{
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size < 14)
{
return SCP_CLIENT_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, size - 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, sz);
if (3!=sz)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, sz);
if (1!=sz)
{
return SCP_CLIENT_STATE_CONNECTION_DENIED;
}
in_uint16_be(c->in_s, sz);
s->display=sz;
return SCP_CLIENT_STATE_END;
}
/* server API */
/******************************************************************************/
enum SCP_SERVER_STATES_E scp_v0s_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s, int skipVchk)
{
tui32 version=0;
tui32 size;
struct SCP_SESSION* session=0;
tui16 sz;
tui32 code=0;
if (!skipVchk)
{
if (0==scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
in_uint32_be(c->in_s, version);
if (version != 0)
{
return SCP_SERVER_STATE_VERSION_ERR;
}
}
else
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
}
in_uint32_be(c->in_s, size);
init_stream(c->in_s, 8196);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, size-8))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, code);
if (code == 0 || code == 10)
{
session = g_malloc(sizeof(struct SCP_SESSION),1);
if (0 == session)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->version=version;
if (code == 0)
{
session->type=SCP_SESSION_TYPE_XVNC;
}
else
{
session->type=SCP_SESSION_TYPE_XRDP;
}
/* reading username */
in_uint16_be(c->in_s, sz);
session->username=g_malloc(sz+1,0);
if (0==session->username)
{
g_free(session);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->username[sz]='\0';
in_uint8a(c->in_s, session->username, sz);
/* reading password */
in_uint16_be(c->in_s, sz);
session->password=g_malloc(sz+1,0);
if (0==session->password)
{
g_free(session->username);
g_free(session);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->password[sz]='\0';
in_uint8a(c->in_s, session->password, sz);
in_uint16_be(c->in_s, session->width);
in_uint16_be(c->in_s, session->height);
in_uint16_be(c->in_s, sz);
session->bpp=(unsigned char)sz;
}
else
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
(*s)=session;
return SCP_SERVER_STATE_OK;
}
/******************************************************************************/
enum SCP_SERVER_STATES_E scp_v0s_allow_connection(struct SCP_CONNECTION* c, SCP_DISPLAY d)
{
out_uint32_be(c->out_s, 0); /* version */
out_uint32_be(c->out_s, 14); /* size */
out_uint16_be(c->out_s, 3); /* cmd */
out_uint16_be(c->out_s, 1); /* data */
out_uint16_be(c->out_s, d); /* data */
s_mark_end(c->out_s);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, c->out_s->end - c->out_s->data))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
return SCP_SERVER_STATE_OK;
}
/******************************************************************************/
enum SCP_SERVER_STATES_E scp_v0s_deny_connection(struct SCP_CONNECTION* c)
{
out_uint32_be(c->out_s, 0); /* version */
out_uint32_be(c->out_s, 14); /* size */
out_uint16_be(c->out_s, 3); /* cmd */
out_uint16_be(c->out_s, 0); /* data */
out_uint16_be(c->out_s, 0); /* data */
s_mark_end(c->out_s);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, c->out_s->end - c->out_s->data))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
return SCP_SERVER_STATE_OK;
}

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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_v0.h
* @brief libscp version 0 declarations
* @author Simone Fedele
*
*/
#ifndef LIBSCP_V0_H
#define LIBSCP_V0_H
#include "libscp.h"
/* client API */
/**
*
* @brief connects to sesman using scp v0
* @param c connection descriptor
* @param s session descriptor
* @param d display
*
*/
enum SCP_CLIENT_STATES_E
scp_v0c_connect(struct SCP_CONNECTION* c, struct SCP_SESSION* s);
/* server API */
/**
*
* @brief processes the stream using scp version 0
* @param c connection descriptor
* @param s session descriptor
* @param skipVchk if set to !0 skips the version control (to be used after
* scp_vXs_accept() )
*
*/
enum SCP_SERVER_STATES_E
scp_v0s_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s, int skipVchk);
/**
*
* @brief allows the connection to TS, returning the display port
* @param c connection descriptor
*
*/
enum SCP_SERVER_STATES_E
scp_v0s_allow_connection(struct SCP_CONNECTION* c, SCP_DISPLAY d);
/**
*
* @brief denies the connection to TS
* @param c connection descriptor
*
*/
enum SCP_SERVER_STATES_E
scp_v0s_deny_connection(struct SCP_CONNECTION* c);
#endif

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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_v1c.c
* @brief libscp version 1 client api code
* @author Simone Fedele
*
*/
#include "libscp_v1c.h"
#include <stdlib.h>
#include <stdio.h>
static enum SCP_CLIENT_STATES_E _scp_v1c_check_response(struct SCP_CONNECTION* c, struct SCP_SESSION* s);
/* client API */
/* 001 */
enum SCP_CLIENT_STATES_E scp_v1c_connect(struct SCP_CONNECTION* c, struct SCP_SESSION* s)
{
tui8 sz;
tui32 size;
init_stream(c->out_s, c->out_s->size);
init_stream(c->in_s, c->in_s->size);
size=19+17+4+ g_strlen(s->hostname) + g_strlen(s->username) + g_strlen(s->password);
if (s->addr_type==SCP_ADDRESS_TYPE_IPV4)
{
size=size+4;
}
else
{
size=size+16;
}
/* sending request */
/* header */
out_uint32_be(c->out_s, 1); /* version */
out_uint32_be(c->out_s, size);
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT);
out_uint16_be(c->out_s, 1);
/* body */
out_uint8(c->out_s, s->type);
out_uint16_be(c->out_s, s->height);
out_uint16_be(c->out_s, s->width);
out_uint8(c->out_s, s->bpp);
out_uint8(c->out_s, s->rsr);
out_uint8p(c->out_s, s->locale, 17);
out_uint8(c->out_s, s->addr_type);
if (s->addr_type==SCP_ADDRESS_TYPE_IPV4)
{
out_uint32_be(c->out_s, s->ipv4addr);
}
else
{
#warning ipv6 address needed
}
sz=g_strlen(s->hostname);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->hostname, sz);
sz=g_strlen(s->username);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->username, sz);
sz=g_strlen(s->password);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->password, sz);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
/* wait for response */
return _scp_v1c_check_response(c, s);
}
/* 004 */
enum SCP_CLIENT_STATES_E scp_v1c_resend_credentials(struct SCP_CONNECTION* c, struct SCP_SESSION* s)
{
tui8 sz;
tui32 size;
init_stream(c->out_s, c->out_s->size);
init_stream(c->in_s, c->in_s->size);
size=12+2+g_strlen(s->username)+g_strlen(s->password);
/* sending request */
/* header */
out_uint32_be(c->out_s, 1); /* version */
out_uint32_be(c->out_s, size);
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT);
out_uint16_be(c->out_s, 4);
/* body */
sz=g_strlen(s->username);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->username, sz);
sz=g_strlen(s->password);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->password, sz);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
/* wait for response */
return _scp_v1c_check_response(c, s);
}
/* 021 */ enum SCP_CLIENT_STATES_E scp_v1c_pwd_change(struct SCP_CONNECTION* c, char* newpass);
/* 022 */ enum SCP_CLIENT_STATES_E scp_v1c_pwd_change_cancel(struct SCP_CONNECTION* c);
/* 041 */
enum SCP_CLIENT_STATES_E
scp_v1c_get_session_list(struct SCP_CONNECTION* c, int* scount, struct SCP_DISCONNECTED_SESSION** s)
{
tui32 version=1;
tui32 size=12;
tui16 cmd=41;
tui32 sescnt=0; /* total session number */
tui32 sestmp=0; /* additional total session number */
tui8 pktcnt=0; /* packet session count */
tui32 totalcnt=0; /* session counter */
tui8 continued=0; /* continue flag */
int firstpkt=1; /* "first packet" flag */
int idx;
struct SCP_DISCONNECTED_SESSION* ds=0;
init_stream(c->out_s, c->out_s->size);
/* we request session list */
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, size); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
do
{
/* then we wait for server response */
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version!=1)
{
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_CLIENT_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, size-8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd!=SCP_COMMAND_SET_DEFAULT)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd!=42)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
if (firstpkt)
{
firstpkt = 0;
in_uint32_be(c->in_s, sescnt);
sestmp = sescnt;
ds = g_malloc(sizeof(struct SCP_DISCONNECTED_SESSION)*sescnt, 0);
if (ds == 0)
{
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
}
else
{
in_uint32_be(c->in_s, sestmp);
}
in_uint8(c->in_s, continued);
in_uint8(c->in_s, pktcnt);
for (idx=0; idx<pktcnt; idx++)
{
in_uint32_be(c->in_s, (ds[totalcnt]).SID); /* session id */
in_uint8(c->in_s, (ds[totalcnt]).type);
in_uint16_be(c->in_s, (ds[totalcnt]).height);
in_uint16_be(c->in_s, (ds[totalcnt]).width);
in_uint8(c->in_s, (ds[totalcnt]).bpp);
in_uint8(c->in_s, (ds[totalcnt]).idle_days);
in_uint8(c->in_s, (ds[totalcnt]).idle_hours);
in_uint8(c->in_s, (ds[totalcnt]).idle_minutes);
totalcnt++;
}
}
while (continued);
printf("fine\n");
/* return data... */
(*scount) = sescnt;
(*s) = ds;
return SCP_CLIENT_STATE_LIST_OK;
}
/* 043 */
enum SCP_CLIENT_STATES_E
scp_v1c_select_session(struct SCP_CONNECTION* c, struct SCP_SESSION* s, SCP_SID sid)
{
tui32 version = 1;
tui32 size = 16;
tui16 cmd = 43;
init_stream(c->out_s, c->out_s->size);
/* sending our selection */
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, size); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
out_uint32_be(c->out_s, sid);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
/* waiting for response.... */
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version!=1)
{
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_CLIENT_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
/* read the rest of the packet */
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, size-8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_COMMAND_SET_DEFAULT)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != 46)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
/* session display */
in_uint16_be(c->in_s, (s->display));
/*we don't need to return any data other than the display */
/*because we already sent that */
return SCP_CLIENT_STATE_OK;
}
/* 044 */
enum SCP_CLIENT_STATES_E
scp_v1c_select_session_cancel(struct SCP_CONNECTION* c)
{
tui32 version = 1;
tui32 size = 12;
tui16 cmd = 44;
init_stream(c->out_s, c->out_s->size);
/* sending our selection */
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, size); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
return SCP_CLIENT_STATE_END;
}
static enum SCP_CLIENT_STATES_E _scp_v1c_check_response(struct SCP_CONNECTION* c, struct SCP_SESSION* s)
{
tui32 version;
tui32 size;
tui16 cmd;
tui16 dim;
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version!=1)
{
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
init_stream(c->in_s, c->in_s->size);
/* read the rest of the packet */
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, size-8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd!=SCP_COMMAND_SET_DEFAULT)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd)
if (cmd==2) /* connection denied */
{
in_uint16_be(c->in_s, dim);
if (s->errstr!=0)
{
g_free(s->errstr);
}
s->errstr=g_malloc(dim+1,0);
if (s->errstr==0)
{
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
in_uint8a(c->in_s, s->errstr, dim);
(s->errstr)[dim]='\0';
return SCP_CLIENT_STATE_CONNECTION_DENIED;
}
else if (cmd==3) /* resend usr/pwd */
{
in_uint16_be(c->in_s, dim);
if (s->errstr!=0)
{
g_free(s->errstr);
}
s->errstr=g_malloc(dim+1,0);
if (s->errstr==0)
{
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
in_uint8a(c->in_s, s->errstr, dim);
(s->errstr)[dim]='\0';
return SCP_CLIENT_STATE_RESEND_CREDENTIALS;
}
else if (cmd==20) /* password change */
{
in_uint16_be(c->in_s, dim);
if (s->errstr!=0)
{
g_free(s->errstr);
}
s->errstr=g_malloc(dim+1,0);
if (s->errstr==0)
{
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
in_uint8a(c->in_s, s->errstr, dim);
(s->errstr)[dim]='\0';
return SCP_CLIENT_STATE_PWD_CHANGE_REQ;
}
else if (cmd==30) /* display */
{
in_uint16_be(c->in_s, s->display);
return SCP_CLIENT_STATE_OK;
}
//else if (cmd==31) /* there's a disconnected session */
//{
// return SCP_CLIENT_STATE_RECONNECT_SINGLE;
//}
//else if (cmd==33) /* display of a disconnected session */
//{
// return SCP_CLIENT_STATE_RECONNECT;
//}
else if (cmd==40) /* session list */
{
return SCP_CLIENT_STATE_SESSION_LIST;
}
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}

64
sesman/libscp/libscp_v1c.h
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@ -0,0 +1,64 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_v1c.h
* @brief libscp version 1 client api declarations
* @author Simone Fedele
*
*/
#ifndef LIBSCP_V1C_H
#define LIBSCP_V1C_H
#include "libscp.h"
/* client API */
/* 001 */
enum SCP_CLIENT_STATES_E
scp_v1c_connect(struct SCP_CONNECTION* c, struct SCP_SESSION* s);
/* 004 */
enum SCP_CLIENT_STATES_E
scp_v1c_resend_credentials(struct SCP_CONNECTION* c, struct SCP_SESSION* s);
/* 021 */
enum SCP_CLIENT_STATES_E
scp_v1c_pwd_change(struct SCP_CONNECTION* c, char* newpass);
/* 022 */
enum SCP_CLIENT_STATES_E
scp_v1c_pwd_change_cancel(struct SCP_CONNECTION* c);
/* 041 */
enum SCP_CLIENT_STATES_E
scp_v1c_get_session_list(struct SCP_CONNECTION* c, int* scount,
struct SCP_DISCONNECTED_SESSION** s);
/* 043 */
enum SCP_CLIENT_STATES_E
scp_v1c_select_session(struct SCP_CONNECTION* c, struct SCP_SESSION* s,
SCP_SID sid);
/* 044 */
enum SCP_CLIENT_STATES_E
scp_v1c_select_session_cancel(struct SCP_CONNECTION* c);
#endif

599
sesman/libscp/libscp_v1s.c
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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_v1s.c
* @brief libscp version 1 server api code
* @author Simone Fedele
*
*/
#ifndef LIBSCP_V1S_C
#define LIBSCP_V1S_C
#include "libscp_v1s.h"
/* server API */
enum SCP_SERVER_STATES_E scp_v1s_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s, int skipVchk)
{
struct SCP_SESSION* session;
tui32 version;
tui32 size;
tui16 cmdset;
tui16 cmd;
tui8 sz;
if (!skipVchk)
{
if (0==scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
in_uint32_be(c->in_s, version);
if (version != 1)
{
return SCP_SERVER_STATE_VERSION_ERR;
}
}
else
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
}
else
{
version=1;
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_SERVER_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, (size-8)))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
/* reading command set */
in_uint16_be(c->in_s, cmdset);
/* if we are starting a management session */
if (cmdset==SCP_COMMAND_SET_MANAGE)
{
return SCP_SERVER_STATE_START_MANAGE;
}
/* if we started with resource sharing... */
if (cmdset==SCP_COMMAND_SET_RSR)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
/* reading command */
in_uint16_be(c->in_s, cmd);
if (cmd != 1)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
session = g_malloc(sizeof(struct SCP_SESSION),1);
if (0 == session)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->version=1;
in_uint8(c->in_s, session->type);
if ((session->type != SCP_SESSION_TYPE_XVNC) && (session->type != SCP_SESSION_TYPE_XRDP))
{
g_free(session);
return SCP_SERVER_STATE_SESSION_TYPE_ERR;
}
in_uint16_be(c->in_s,session->height);
in_uint16_be(c->in_s, session->width);
in_uint8(c->in_s, session->bpp);
in_uint8(c->in_s, session->rsr);
in_uint8a(c->in_s, session->locale, 17);
session->locale[17]='\0';
in_uint8(c->in_s, session->addr_type);
if (session->addr_type==SCP_ADDRESS_TYPE_IPV4)
{
in_uint32_be(c->in_s, session->ipv4addr);
}
else if (session->addr_type==SCP_ADDRESS_TYPE_IPV6)
{
#warning how to handle ipv6 addresses?
}
/* reading hostname */
in_uint8(c->in_s, sz);
session->hostname=g_malloc(sz+1,1);
if (0==session->hostname)
{
g_free(session);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->hostname[sz]='\0';
in_uint8a(c->in_s, session->hostname, sz);
/* reading username */
in_uint8(c->in_s, sz);
session->username=g_malloc(sz+1,1);
if (0==session->username)
{
g_free(session->hostname);
g_free(session);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->username[sz]='\0';
in_uint8a(c->in_s, session->username, sz);
/* reading password */
in_uint8(c->in_s, sz);
session->password=g_malloc(sz+1,1);
if (0==session->password)
{
g_free(session->username);
g_free(session->hostname);
g_free(session);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
session->password[sz]='\0';
in_uint8a(c->in_s, session->password, sz);
/* returning the struct */
(*s)=session;
return SCP_SERVER_STATE_OK;
}
enum SCP_SERVER_STATES_E
scp_v1s_deny_connection(struct SCP_CONNECTION* c, char* reason)
{
int rlen;
init_stream(c->out_s,c->out_s->size);
/* forcing message not to exceed 64k */
rlen = g_strlen(reason);
if (rlen > 65535)
{
rlen = 65535;
}
out_uint32_be(c->out_s, 1);
/* packet size: 4 + 4 + 2 + 2 + 2 + strlen(reason)*/
/* version + size + cmdset + cmd + msglen + msg */
out_uint32_be(c->out_s, rlen+14);
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT);
out_uint16_be(c->out_s, 2);
out_uint16_be(c->out_s, rlen)
out_uint8p(c->out_s, reason, rlen);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, rlen+14))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
return SCP_SERVER_STATE_END;
}
enum SCP_SERVER_STATES_E
scp_v1s_request_password(struct SCP_CONNECTION* c, struct SCP_SESSION* s, char* reason)
{
tui8 sz;
char *ubuf;
char *pbuf;
tui32 version;
tui32 size;
tui16 cmdset;
tui16 cmd;
int rlen;
init_stream(c->in_s, c->in_s->size);
init_stream(c->out_s, c->out_s->size);
/* forcing message not to exceed 64k */
rlen = g_strlen(reason);
if (rlen > 65535)
{
rlen = 65535;
}
/* send password request */
version=1;
size=12;
cmdset=0;
cmd=3;
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, 14+rlen); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
out_uint16_be(c->out_s, rlen);
out_uint8p(c->out_s, reason, rlen);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, 14+rlen))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
/* receive password & username */
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version!=1)
{
return SCP_SERVER_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_SERVER_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, (size-8)))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmdset);
if (cmdset != SCP_COMMAND_SET_DEFAULT)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != 4)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
/* reading username */
in_uint8(c->in_s, sz);
ubuf=g_malloc(sz+1,1);
if (0==ubuf)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
ubuf[sz]='\0';
in_uint8a(c->in_s, ubuf, sz);
/* reading password */
in_uint8(c->in_s, sz);
pbuf=g_malloc(sz+1,1);
if (0==pbuf)
{
g_free(ubuf);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
pbuf[sz]='\0';
in_uint8a(c->in_s, pbuf, sz);
/* replacing username and password */
g_free(s->username);
g_free(s->password);
s->username=ubuf;
s->password=pbuf;
return SCP_SERVER_STATE_OK;
}
/* 020 */
enum SCP_SERVER_STATES_E
scp_v1s_request_pwd_change(struct SCP_CONNECTION* c, char* reason, char* npw)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
/* 023 */
enum SCP_SERVER_STATES_E
scp_v1s_pwd_change_error(struct SCP_CONNECTION* c, char* error, int retry, char* npw)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
/* 030 */
enum SCP_SERVER_STATES_E
scp_v1s_connect_new_session(struct SCP_CONNECTION* c, SCP_DISPLAY d)
{
/* send password request */
tui32 version=1;
tui32 size=14;
tui16 cmd=30;
init_stream(c->out_s, c->out_s->size);
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, size); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
out_uint16_be(c->out_s, d); /* display */
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, 14))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
return SCP_SERVER_STATE_OK;
}
/* 032 */
enum SCP_SERVER_STATES_E
scp_v1s_connection_error(struct SCP_CONNECTION* c, char* error)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
return SCP_SERVER_STATE_END;
}
/* 040 */
enum SCP_SERVER_STATES_E
scp_v1s_list_sessions(struct SCP_CONNECTION* c, int sescnt, struct SCP_DISCONNECTED_SESSION* ds, SCP_SID* sid)
{
tui32 version=1;
tui32 size=12;
tui16 cmd=40;
int pktcnt;
int idx;
int sidx;
int pidx;
struct SCP_DISCONNECTED_SESSION* cds;
/* first we send a notice that we have some disconnected sessions */
init_stream(c->out_s, c->out_s->size);
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, size); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
/* then we wait for client ack */
#warning maybe this message could say if the session should be resized on
#warning server side or client side
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version!=1)
{
return SCP_SERVER_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_SERVER_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, (size-8)))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_COMMAND_SET_DEFAULT)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != 41)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
/* calculating the number of packets to send */
pktcnt=sescnt/SCP_SERVER_MAX_LIST_SIZE;
if ((sescnt%SCP_SERVER_MAX_LIST_SIZE)!=0)
{
pktcnt++;
}
for (idx=0; idx<pktcnt; idx++)
{
/* ok, we send session session list */
init_stream(c->out_s, c->out_s->size);
/* size: ver+size+cmdset+cmd+sescnt+continue+count */
size=4+4+2+2+4+1+1;
/* header */
cmd=42;
s_push_layer(c->out_s, channel_hdr, 8);
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT);
out_uint16_be(c->out_s, cmd);
/* session count */
out_uint32_be(c->out_s, sescnt);
/* setting the continue flag */
if ((idx+1)*SCP_SERVER_MAX_LIST_SIZE >= sescnt)
{
out_uint8(c->out_s, 0);
/* setting session count for this packet */
pidx=sescnt-(idx*SCP_SERVER_MAX_LIST_SIZE);
out_uint8(c->out_s, pidx);
}
else
{
out_uint8(c->out_s, 1);
/* setting session count for this packet */
pidx=SCP_SERVER_MAX_LIST_SIZE;
out_uint8(c->out_s, pidx);
}
/* adding session descriptors */
for (sidx=0; sidx<pidx; sidx++)
{
/* shortcut to the current session to send */
cds=ds+((idx)*SCP_SERVER_MAX_LIST_SIZE)+sidx;
/* session data */
out_uint32_be(c->out_s, cds->SID); /* session id */
out_uint8(c->out_s, cds->type);
out_uint16_be(c->out_s, cds->height);
out_uint16_be(c->out_s, cds->width);
out_uint8(c->out_s, cds->bpp);
out_uint8(c->out_s, cds->idle_days);
out_uint8(c->out_s, cds->idle_hours);
out_uint8(c->out_s, cds->idle_minutes);
size = size + 13;
}
s_pop_layer(c->out_s, channel_hdr);
out_uint32_be(c->out_s, version);
out_uint32_be(c->out_s, size);
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
}
/* we get the response */
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, (8)))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version!=1)
{
return SCP_SERVER_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_SERVER_STATE_SIZE_ERR;
}
/* rest of the packet */
init_stream(c->in_s, c->in_s->size);
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, (size-8)))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_COMMAND_SET_DEFAULT)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd == 43)
{
/* select session */
in_uint32_be(c->in_s, (*sid));
/* checking sid value */
for (idx=0; idx<sescnt; idx++)
{
/* the sid is valid */
if (ds[idx].SID==(*sid))
{
/* ok, session selected */
return SCP_SERVER_STATE_OK;
}
}
/* if we got here, the requested sid wasn't one from the list we sent */
/* we should kill the connection */
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
else if (cmd == 44)
{
/* cancel connection */
return SCP_SERVER_STATE_SELECTION_CANCEL;
}
// else if (cmd == 45)
// {
// /* force new connection */
// return SCP_SERVER_STATE_FORCE_NEW;
// }
else
{
/* wrong response */
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
return SCP_SERVER_STATE_OK;
}
/* 046 was: 031 struct SCP_DISCONNECTED_SESSION* ds, */
enum SCP_SERVER_STATES_E
scp_v1s_reconnect_session(struct SCP_CONNECTION* c, SCP_DISPLAY d)
{
tui32 version = 1;
tui32 size = 14;
tui16 cmd = 46;
/* ok, we send session data and display */
init_stream(c->out_s, c->out_s->size);
/* header */
out_uint32_be(c->out_s, version);
out_uint32_be(c->out_s, size);
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT);
out_uint16_be(c->out_s, cmd);
/* session data */
out_uint16_be(c->out_s, d); /* session display */
/*out_uint8(c->out_s, ds->type);
out_uint16_be(c->out_s, ds->height);
out_uint16_be(c->out_s, ds->width);
out_uint8(c->out_s, ds->bpp);
out_uint8(c->out_s, ds->idle_days);
out_uint8(c->out_s, ds->idle_hours);
out_uint8(c->out_s, ds->idle_minutes);*/
/* these last three are not really needed... */
if (0!=scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
return SCP_SERVER_STATE_OK;
}
#endif

87
sesman/libscp/libscp_v1s.h
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@ -0,0 +1,87 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_v1s.h
* @brief libscp version 1 server api declarations
* @author Simone Fedele
*
*/
#ifndef LIBSCP_V1S_H
#define LIBSCP_V1S_H
#include "libscp.h"
/* server API */
/**
*
* @brief processes the stream using scp version 1
* @param c connection descriptor
* @param s pointer to session descriptor pointer
* @param skipVchk if set to !0 skips the version control (to be used after
* scp_vXs_accept() )
*
* this function places in *s the address of a newely allocated SCP_SESSION structure
* that should be free()d
*/
enum SCP_SERVER_STATES_E
scp_v1s_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s, int skipVchk);
/**
*
* @brief denies connection to sesman
* @param c connection descriptor
* @param reason pointer to a string containinge the reason for denying connection
*
*/
/* 002 */
enum SCP_SERVER_STATES_E
scp_v1s_deny_connection(struct SCP_CONNECTION* c, char* reason);
enum SCP_SERVER_STATES_E
scp_v1s_request_password(struct SCP_CONNECTION* c, struct SCP_SESSION* s, char* reason);
/* 020 */
enum SCP_SERVER_STATES_E
scp_v1s_request_pwd_change(struct SCP_CONNECTION* c, char* reason, char* npw);
/* 023 */
enum SCP_SERVER_STATES_E
scp_v1s_pwd_change_error(struct SCP_CONNECTION* c, char* error, int retry, char* npw);
/* 030 */
enum SCP_SERVER_STATES_E
scp_v1s_connect_new_session(struct SCP_CONNECTION* c, SCP_DISPLAY d);
/* 032 */
enum SCP_SERVER_STATES_E
scp_v1s_connection_error(struct SCP_CONNECTION* c, char* error);
/* 040 */
enum SCP_SERVER_STATES_E
scp_v1s_list_sessions(struct SCP_CONNECTION* c, int sescnt,
struct SCP_DISCONNECTED_SESSION* ds, SCP_SID* sid);
/* 046 was: 031 struct SCP_DISCONNECTED_SESSION* ds, */
enum SCP_SERVER_STATES_E
scp_v1s_reconnect_session(struct SCP_CONNECTION* c, SCP_DISPLAY d);
#endif

53
sesman/libscp/libscp_vX.c
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@ -0,0 +1,53 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_vX.c
* @brief libscp version neutral code
* @author Simone Fedele
*
*/
#include "libscp_vX.h"
/* server API */
enum SCP_SERVER_STATES_E scp_vXs_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s)
{
tui32 version;
/* reading version and packet size */
if (0!=scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version == 0)
{
return scp_v0s_accept(c, s, 1);
}
else if (version == 1)
{
return scp_v1s_accept(c, s, 1);
}
return SCP_SERVER_STATE_VERSION_ERR;
}

48
sesman/libscp/libscp_vX.h
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@ -0,0 +1,48 @@
/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2007
*/
/**
*
* @file libscp_vX.h
* @brief libscp version neutral code header
* @author Simone Fedele
*
*/
#ifndef LIBSCP_VX_H
#define LIBSCP_VX_H
#include "libscp_types.h"
#include "libscp_v0.h"
#include "libscp_v1s.h"
/* server API */
/**
*
* @brief version neutral server accept function
* @param c connection descriptor
* @param s session descriptor pointer address.
* it will return a newely allocated descriptor.
* It this memory needs to be g_free()d
*
*/
enum SCP_SERVER_STATES_E scp_vXs_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s);
#endif

113
sesman/lock.c
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@ -32,14 +32,6 @@ pthread_mutexattr_t lock_chain_attr; /* mutex attributes */
pthread_mutex_t lock_config; /* configuration access lock */ pthread_mutex_t lock_config; /* configuration access lock */
pthread_mutexattr_t lock_config_attr; /* mutex attributes */ pthread_mutexattr_t lock_config_attr; /* mutex attributes */
pthread_mutex_t lock_fork; /* this lock protects the counters */
pthread_mutexattr_t lock_fork_attr; /* mutex attributes */
sem_t lock_fork_req; /* semaphore on which the process that are going to fork suspend on */
sem_t lock_fork_wait; /* semaphore on which the suspended process wait on */
int lock_fork_forkers_count; /* threads that want to fork */
int lock_fork_blockers_count; /* threads thar are blocking fork */
int lock_fork_waiting_count; /* threads suspended until the fork finishes */
sem_t lock_socket; sem_t lock_socket;
void DEFAULT_CC void DEFAULT_CC
@ -55,18 +47,6 @@ lock_init(void)
/* initializing config lock */ /* initializing config lock */
pthread_mutexattr_init(&lock_config_attr); pthread_mutexattr_init(&lock_config_attr);
pthread_mutex_init(&lock_config, &lock_config_attr); pthread_mutex_init(&lock_config, &lock_config_attr);
/* initializing fork lock */
pthread_mutexattr_init(&lock_fork_attr);
pthread_mutex_init(&lock_chain, &lock_fork_attr);
sem_init(&lock_fork_req, 0, 0);
sem_init(&lock_fork_wait, 0, 0);
/* here we don't use locking because lock_init() should be called BEFORE */
/* any thread is created */
lock_fork_blockers_count=0;
lock_fork_waiting_count=0;
lock_fork_forkers_count=0;
} }
/******************************************************************************/ /******************************************************************************/
@ -105,96 +85,3 @@ lock_socket_release(void)
sem_post(&lock_socket); sem_post(&lock_socket);
} }
/******************************************************************************/
void DEFAULT_CC
lock_fork_request(void)
{
/* lock mutex */
pthread_mutex_lock(&lock_fork);
if (lock_fork_blockers_count == 0)
{
/* if noone is blocking fork(), then we're allowed to fork */
sem_post(&lock_fork_req);
}
lock_fork_forkers_count++;
pthread_mutex_unlock(&lock_fork);
/* we wait to be allowed to fork() */
sem_wait(&lock_fork_req);
}
/******************************************************************************/
void DEFAULT_CC
lock_fork_release(void)
{
pthread_mutex_lock(&lock_fork);
lock_fork_forkers_count--;
/* if there's someone else that want to fork, we let him fork() */
if (lock_fork_forkers_count > 0)
{
sem_post(&lock_fork_req);
}
for (;lock_fork_waiting_count > 0; lock_fork_waiting_count--)
{
/* waking up the other processes */
sem_post(&lock_fork_wait);
}
pthread_mutex_unlock(&lock_fork);
}
/******************************************************************************/
void DEFAULT_CC
lock_fork_critical_section_end(int blocking)
{
LOG_DBG("lock_fork_critical_secection_end()",0);
/* lock mutex */
pthread_mutex_lock(&lock_fork);
if (blocking == SESMAN_LOCK_FORK_BLOCKER)
{
lock_fork_blockers_count--;
}
/* if there's someone who wants to fork and we're the last blocking */
/* then we let him go */
if ((lock_fork_blockers_count == 0) && (lock_fork_forkers_count>0))
{
sem_post(&lock_fork_req);
}
pthread_mutex_unlock(&lock_fork);
}
/******************************************************************************/
int DEFAULT_CC
lock_fork_critical_section_start(void)
{
LOG_DBG("lock_fork_critical_secection_start()",0);
do
{
pthread_mutex_lock(&lock_fork);
/* someone requested to fork */
if (lock_fork_forkers_count > 0)
{
lock_fork_waiting_count++;
pthread_mutex_unlock(&lock_fork);
/* we wait until the fork finishes */
sem_wait(&lock_fork_wait);
}
else
{
/* no fork, so we can go on... */
lock_fork_blockers_count++;
pthread_mutex_unlock(&lock_fork);
return SESMAN_LOCK_FORK_BLOCKER;
}
} while (1);
/* we'll never get here */
return SESMAN_LOCK_FORK_WAITING;
}

42
sesman/lock.h
Unescape View File

@ -22,9 +22,6 @@
#include "sesman.h" #include "sesman.h"
#define SESMAN_LOCK_FORK_BLOCKER 1
#define SESMAN_LOCK_FORK_WAITING 0
/** /**
* *
* @brief initializes all the locks * @brief initializes all the locks
@ -81,42 +78,5 @@ lock_socket_acquire(void);
void DEFAULT_CC void DEFAULT_CC
lock_socket_release(void); lock_socket_release(void);
/**
*
* @brief requires to fork a new child process
*
*/
void DEFAULT_CC
lock_fork_request(void);
/**
*
* @brief releases a fork() request
*
*/
void DEFAULT_CC
lock_fork_release(void);
/**
*
* @brief starts a section that is critical for forking
*
* starts a section that is critical for forking, that is noone can fork()
* while i'm in a critical section. But if someone wanted to fork we have
* to wait until he finishes with lock_fork_release()
*
* @return
*
*/
int DEFAULT_CC
lock_fork_critical_section_start(void);
/**
*
* @brief closes the critical section
*
*/
void DEFAULT_CC
lock_fork_critical_section_end(int blocking);
#endif #endif

5
sesman/sesman.c
Unescape View File

@ -50,7 +50,7 @@ sesman_main_loop(void)
log_message(LOG_LEVEL_INFO, "listening..."); log_message(LOG_LEVEL_INFO, "listening...");
g_sck = g_tcp_socket(); g_sck = g_tcp_socket();
g_tcp_set_non_blocking(g_sck); g_tcp_set_non_blocking(g_sck);
error = tcp_bind(g_sck, g_cfg.listen_address, g_cfg.listen_port); error = scp_tcp_bind(g_sck, g_cfg.listen_address, g_cfg.listen_port);
if (error == 0) if (error == 0)
{ {
error = g_tcp_listen(g_sck); error = g_tcp_listen(g_sck);
@ -213,6 +213,9 @@ main(int argc, char** argv)
g_exit(1); g_exit(1);
} }
/* libscp initialization */
scp_init();
if (daemon) if (daemon)
{ {
/* start of daemonizing code */ /* start of daemonizing code */

2
sesman/sesman.h
Unescape View File

@ -36,7 +36,7 @@
#include "env.h" #include "env.h"
#include "auth.h" #include "auth.h"
#include "config.h" #include "config.h"
#include "tcp.h" //#include "tcp.h"
#include "sig.h" #include "sig.h"
#include "session.h" #include "session.h"
#include "access.h" #include "access.h"

25
sesman/session.c
Unescape View File

@ -217,7 +217,7 @@ for user %s denied", username);
/* we should need no more displays than this */ /* we should need no more displays than this */
/* block all the threads running to enable forking */ /* block all the threads running to enable forking */
lock_fork_request(); scp_lock_fork_request();
while (x_server_running(display)) while (x_server_running(display))
{ {
display++; display++;
@ -285,13 +285,18 @@ for user %s denied", username);
/* still a problem starting window manager just start xterm */ /* still a problem starting window manager just start xterm */
g_execlp3("xterm", "xterm", 0); g_execlp3("xterm", "xterm", 0);
}
/* should not get here */ /* should not get here */
log_message(LOG_LEVEL_ALWAYS,"error starting xterm for user %s - pid %d", log_message(LOG_LEVEL_ALWAYS,"error starting xterm for user %s - pid %d",
username, g_getpid()); username, g_getpid());
/* logging parameters */ /* logging parameters */
/* no problem calling strerror for thread safety: other threads are blocked */ /* 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, "errno: %d, description: %s", errno, g_get_strerror());
}
else
{
log_message(LOG_LEVEL_ERROR, "another Xserver is already active on display %d", display);
}
log_message(LOG_LEVEL_DEBUG,"aborting connection..."); log_message(LOG_LEVEL_DEBUG,"aborting connection...");
g_exit(0); g_exit(0);
} }
@ -318,9 +323,12 @@ for user %s denied", username);
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("-rfbauth"));
list_add_item(xserver_params, (long)g_strdup(passwd_file)); list_add_item(xserver_params, (long)g_strdup(passwd_file));
/* additional parameters from sesman.ini file */ /* additional parameters from sesman.ini file */
config_read_xserver_params(SESMAN_SESSION_TYPE_XVNC, //config_read_xserver_params(SESMAN_SESSION_TYPE_XVNC,
xserver_params); // xserver_params);
list_append_list_strdup(g_cfg.vnc_params, xserver_params, 0);
/* make sure it ends with a zero */ /* make sure it ends with a zero */
list_add_item(xserver_params, 0); list_add_item(xserver_params, 0);
pp1 = (char**)xserver_params->items; pp1 = (char**)xserver_params->items;
@ -337,9 +345,12 @@ for user %s denied", username);
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(depth)); list_add_item(xserver_params, (long)g_strdup(depth));
/* additional parameters from sesman.ini file */ /* additional parameters from sesman.ini file */
config_read_xserver_params(SESMAN_SESSION_TYPE_XRDP, //config_read_xserver_params(SESMAN_SESSION_TYPE_XRDP,
xserver_params); // xserver_params);
list_append_list_strdup(g_cfg.rdp_params, xserver_params, 0);
/* make sure it ends with a zero */ /* make sure it ends with a zero */
list_add_item(xserver_params, 0); list_add_item(xserver_params, 0);
pp1 = (char**)xserver_params->items; pp1 = (char**)xserver_params->items;
@ -378,7 +389,7 @@ for user %s denied", username);
else /* parent sesman process */ else /* parent sesman process */
{ {
/* let the other threads go on */ /* let the other threads go on */
lock_fork_release(); scp_lock_fork_release();
temp->item->pid = pid; temp->item->pid = pid;
temp->item->display = display; temp->item->display = display;

27
sesman/tools/Makefile
Unescape View File

@ -1,15 +1,16 @@
# sesman tools makefile # sesman tools makefile
SESTESTOBJ = sestest.o tcp.o \ SESTESTOBJ = sestest.o \
os_calls.o d3des.o list.o file.o \ os_calls.o
libscp_v1c.o # d3des.o list.o file.o \
# libscp_v1c.o tcp.o
SESRUNOBJ = sesrun.o config.o tcp.o \ SESRUNOBJ = sesrun.o config.o tcp.o \
os_calls.o d3des.o list.o file.o log.o os_calls.o d3des.o list.o file.o log.o
DEFINES = -DLIBSCP_CLIENT DEFINES = -DLIBSCP_CLIENT
CFLAGS = -Wall -O2 -I../../common -I../ -I/usr/include/nptl $(DEFINES) CFLAGS = -Wall -O2 -I../../common -I../ -I/usr/include/nptl -I../libscp $(DEFINES)
LDFLAGS = -L /usr/gnu/lib -I/usr/include/nptl -L/usr/lib/nptl -lpthread -ldl $(DEFINES) LDFLAGS = -L /usr/gnu/lib -I/usr/include/nptl -L/usr/lib/nptl -L../libscp -lpthread -ldl -lscp -Wl,-rpath,../libscp $(DEFINES)
#LDFLAGS = -L /usr/gnu/lib -ldl $(DEFINES) #LDFLAGS = -L /usr/gnu/lib -ldl $(DEFINES)
C_OS_FLAGS = $(CFLAGS) -c -g C_OS_FLAGS = $(CFLAGS) -c -g
CC = gcc CC = gcc
@ -25,26 +26,26 @@ srun: $(SESRUNOBJ)
os_calls.o: ../../common/os_calls.c os_calls.o: ../../common/os_calls.c
$(CC) $(C_OS_FLAGS) ../../common/os_calls.c $(CC) $(C_OS_FLAGS) ../../common/os_calls.c
d3des.o: ../../common/d3des.c #d3des.o: ../../common/d3des.c
$(CC) $(C_OS_FLAGS) ../../common/d3des.c $(CC) $(C_OS_FLAGS) ../../common/d3des.c
list.o: ../../common/list.c #list.o: ../../common/list.c
$(CC) $(C_OS_FLAGS) ../../common/list.c $(CC) $(C_OS_FLAGS) ../../common/list.c
file.o: ../../common/file.c #file.o: ../../common/file.c
$(CC) $(C_OS_FLAGS) ../../common/file.c $(CC) $(C_OS_FLAGS) ../../common/file.c
log.o: ../../common/file.c log.o: ../../common/log.c
$(CC) $(C_OS_FLAGS) ../../common/log.c $(CC) $(C_OS_FLAGS) ../../common/log.c
tcp.o: ../tcp.c #tcp.o: tcp.c
$(CC) $(C_OS_FLAGS) ../tcp.c # $(CC) $(C_OS_FLAGS) ../tcp.c
config.o: ../config.c config.o: ../config.c
$(CC) $(C_OS_FLAGS) ../config.c $(CC) $(C_OS_FLAGS) ../config.c
libscp_v1c.o: ../libscp_v1c.c #libscp_v1c.o: ../libscp_v1c.c
$(CC) $(C_OS_FLAGS) ../libscp_v1c.c # $(CC) $(C_OS_FLAGS) ../libscp_v1c.c
clean: clean:
rm -f *.o sestest sesrun rm -f *.o sestest sesrun

1
sesman/tools/sesrun.c
Unescape View File

@ -26,6 +26,7 @@
*/ */
#include "sesman.h" #include "sesman.h"
#include "tcp.h"
int g_sck; int g_sck;
int g_pid; int g_pid;

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