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first try for a scp protocol layer (aka libscp)

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ulab-original
ilsimo 18 years ago
parent 0a7dc2b687
commit 71e7fc734d
16 changed files with 885 additions and 98 deletions
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5
sesman/Makefile
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# sesman makefile
LIBSCPOBJ = libscp_vX.o libscp_v0.o libscp_v1s.o
SESMANOBJ = sesman.o config.o tcp.o sig.o session.o env.o \
os_calls.o d3des.o list.o file.o log.o access.o \
scp.o scp_v0.o thread.o lock.o
scp.o scp_v0.o thread.o lock.o \
$(LIBSCPOBJ)
SESRUNOBJ = sesrun.o config.o tcp.o lock.o \
os_calls.o d3des.o list.o file.o log.o

37
sesman/libscp.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 2005-2006
*/
/**
*
* @file libscp.h
* @brief libscp main header
* @author Simone Fedele
*
*/
#ifndef LIBSCP_H
#define LIBSCP_H
#include "libscp_types.h"
#include "libscp_vX.h"
#include "libscp_v0.h"
#include "libscp_v1s.h"
//#include "libscp_v1c.h"
#endif

117
sesman/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 2005-2006
*/
/**
*
* @file libscp_types.h
* @brief libscp data types definitions
* @author Simone Fedele
*
*/
#ifndef LIBSCP_TYPES_H
#define LIBSCP_TYPES_H
#include <sys/types.h>
#include <inttypes.h>
#include "os_calls.h"
#include "parse.h"
#include "arch.h"
//#warning sesman requires its own tcp streaming functions for threading safety
#include "tcp.h"
#define SCP_SID uint32_t
#define SCP_DISPLAY uint16_t
//#warning this should be an INT16 on every platform...
//typedef unsigned int SCP_DISPLAY_PORT; --> uint16_t is it portable?
#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
struct SCP_CONNECTION
{
int in_sck;
struct stream* in_s;
struct stream* out_s;
};
struct SCP_SESSION
{
unsigned char type;
uint32_t version;
uint16_t height;
uint16_t width;
unsigned char bpp;
unsigned char rsr;
char locale[18];
char* username;
char* password;
char* hostname;
unsigned char addr_type;
uint32_t ipv4addr; //htons
uint32_t ipv6addr; //should be 128bit
uint16_t display;
char* errstr;
};
struct SCP_DISCONNECTED_SESSION
{
uint32_t SID;
unsigned char type;
uint16_t height;
uint16_t width;
unsigned char bpp;
unsigned char idle_days;
unsigned char idle_hours;
unsigned char idle_minutes;
};
enum SCP_CLIENT_STATES_E
{
SCP_CLIENT_STATE_OK,
SCP_CLIENT_STATE_NETWORK_ERR
};
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_START_MANAGE,
SCP_SERVER_STATE_END
};
#endif

188
sesman/libscp_v0.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 2005-2006
*/
/**
*
* @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, SCP_DISPLAY* d)
{
uint16_t 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);
out_uint16_be(c->out_s, 10); // code
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!=tcp_force_send(c->in_sck, c->out_s->data, c->out_s->end - c->out_s->data))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
return SCP_CLIENT_STATE_OK;
}
/* server API */
/******************************************************************************/
enum SCP_SERVER_STATES_E scp_v0s_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s, int skipVchk)
{
uint32_t version=0;
uint32_t size;
struct SCP_SESSION* session=0;
uint16_t sz;
uint32_t code=0;
if (!skipVchk)
{
if (0==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!=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;
g_printf("session %x\n",session);
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) 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) 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;
}
//reset_stream(c->in_s);
//reset_stream(c->out_s);
(*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!=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!=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;
}

72
sesman/libscp_v0.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 2005-2006
*/
/**
*
* @file libscp_v0.h
* @brief libscp version 0 declarations
* @author Simone Fedele
*
*/
#ifndef LIBSCP_V0_H
#define LIBSCP_V0_H
#include "libscp_types.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, SCP_DISPLAY* d);
/* 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

31
sesman/libscp_v1c.h
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#include "scp.h"
#ifndef SCP_V1C_H
#define SCP_V1C_H
enum SCP_CLIENY_STATES_E
{
SCP_CLIENT_STATE_NO,
SCP_CLIENT_STATE_WRONGPWD,
SCP_CLIENT_STATE_PWDCHG_REQ,
SCP_CLIENT_STATE_PWDCHG_CANCEL,
SCP_CLIENT_STATE_,
};
/* client API */
/**
*
*
*/
/* 001 */ SCP_CLIENT_STATES_E scp_v1c_connect(struct SCP_CONNECTION* c, struct SCP_SESSION* s);
ritorna errore: o il display
/* 021 */ SCP_CLIENT_STATES_E scp_v1c_pwd_change(struct SCP_CONNECTION* c, char* newpass);
/* 022 */ SCP_CLIENT_STATES_E scp_v1c_pwd_change_cancel(struct SCP_CONNECTION* c);
/* ... */ SCP_CLIENT_STATES_E scp_v1c_get_session_list(struct SCP_CONNECTION* c, int* scount, struct SCP_DISCONNECTED_SESSION** s);
/* 041 */ SCP_CLIENT_STATES_E scp_v1c_select_session(struct SCP_CONNECTION* c, SCP_SID sid);
/* 042 */ SCP_CLIENT_STATES_E scp_v1c_select_session_cancel(struct SCP_CONNECTION* c);
#endif

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sesman/libscp_v1s.c
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#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;
uint32_t version;
uint32_t size;
uint16_t cmdset;
uint16_t cmd;
unsigned char sz;
if (!skipVchk)
{
if (0==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;
}
}
in_uint32_be(c->in_s, size);
if (size<12)
{
return SCP_SERVER_STATE_SIZE_ERR;
}
if (0!=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 != 0)
{
return SCP_SERVER_STATE_SEQUENCE_ERR;
}
session = g_malloc(sizeof(struct SCP_SESSION),1);
if (0 == session) return SCP_SERVER_STATE_INTERNAL_ERR;
in_uint8(c->in_s, session->type);
if ((session->type != SCP_SESSION_TYPE_XVNC) && (session->type != SCP_SESSION_TYPE_XRDP))
{
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) 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) 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) return SCP_SERVER_STATE_INTERNAL_ERR;
session->password[sz]='\0';
in_uint8a(c->in_s, session->password, sz);
//leggo lo stream e ritorno la struttura
*s=session;
return SCP_SERVER_STATE_OK;
}
enum SCP_SERVER_STATES_E scp_v1s_deny_connection(struct SCP_CONNECTION* c, char* reason)
{
int rlen;
/* 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!=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, char** pwd, char** user)
{
unsigned char sz;
uint32_t version;
uint32_t size;
uint16_t cmdset;
uint16_t cmd;
version=1;
size=12;
cmdset=0;
cmd=3;
/* send password request */
out_uint32_be(c->out_s, 1); /* version */
out_uint32_be(c->out_s, 12); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); /* cmdset */
out_uint16_be(c->out_s, 3); /* cmd */
if (0!=tcp_force_send(c->in_sck, c->out_s->data, 12))
{
return SCP_SERVER_STATE_NETWORK_ERR;
}
/* receive password & username */
#warning check cmd seq
/* tcp_force_recv()
in_uint32_be()
in_uint32_be
in_uint16_be
in_uint16_be*/
/* reading username */
in_uint8(c->in_s, sz);
(*user)=g_malloc(sz+1,1);
if (0==(*user)) return SCP_SERVER_STATE_INTERNAL_ERR;
(*user)[sz]='\0';
in_uint8a(c->in_s, (*user), sz);
/* reading password */
in_uint8(c->in_s, sz);
(*pwd)=g_malloc(sz+1,1);
if (0==(*pwd)) return SCP_SERVER_STATE_INTERNAL_ERR;
(*pwd)[sz]='\0';
in_uint8a(c->in_s, (*pwd), sz);
return SCP_SERVER_STATE_INTERNAL_ERR;
}
/* 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* s, 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* s, SCP_DISPLAY d)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
/* 031 */
enum SCP_SERVER_STATES_E scp_v1s_reconnect_session(struct SCP_CONNECTION* s, SCP_DISPLAY d)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
/* 032 */
enum SCP_SERVER_STATES_E scp_v1s_connection_error(struct SCP_CONNECTION* s, char* error)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
/* 040 */
enum SCP_SERVER_STATES_E scp_v1s_list_sessions(struct SCP_CONNECTION* s, int sescnt, struct SCP_DISCONNECTED_SESSION** ds, SCP_SID* sid)
{
return SCP_SERVER_STATE_INTERNAL_ERR;
}
#endif

20
sesman/libscp_v1s.h
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#ifndef LIBSCP_V1S_H
#define LIBSCP_V1S_H
#include "libscp_types.h"
//#include "os_calls.h"
//#include "tcp.h"
/* server API */
/* ... */ enum SCP_SERVER_STATES_E scp_v1s_accept(struct SCP_CONNECTION* c, struct SCP_SESSION** s, int skipVchk);
/* 002 */ enum SCP_SERVER_STATES_E scp_v1s_deny_connection(struct SCP_CONNECTION* c, 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* s, char* error, int retry, char* npw);
/* 030 */ enum SCP_SERVER_STATES_E scp_v1s_connect_new_session(struct SCP_CONNECTION* s, SCP_DISPLAY d);
/* 031 */ enum SCP_SERVER_STATES_E scp_v1s_reconnect_session(struct SCP_CONNECTION* s, SCP_DISPLAY d);
/* 032 */ enum SCP_SERVER_STATES_E scp_v1s_connection_error(struct SCP_CONNECTION* s, char* error);
/* 040 */ enum SCP_SERVER_STATES_E scp_v1s_list_sessions(struct SCP_CONNECTION* s, int sescnt, struct SCP_DISCONNECTED_SESSION** ds, SCP_SID* sid);
#endif

53
sesman/libscp_vX.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 2005-2006
*/
/**
*
* @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)
{
uint32_t version;
/* reading version and packet size */
if (0!=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_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 2005-2006
*/
/**
*
* @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

72
sesman/scp.c
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@ -35,55 +35,61 @@ extern int thread_sck;
void* DEFAULT_CC
scp_process_start(void* sck)
{
int socket;
int version;
int size;
struct stream* in_s;
struct stream* out_s;
struct SCP_CONNECTION scon;
struct SCP_SESSION* sdata;
/* making a local copy of the socket (it's on the stack) */
/* probably this is just paranoia */
//socket = *((int*) sck);
socket = thread_sck;
LOG_DBG("started scp thread on socket %d", socket);
scon.in_sck = thread_sck;
LOG_DBG("started scp thread on socket %d", scon.in_sck);
/* unlocking thread_sck */
lock_socket_release();
make_stream(in_s);
make_stream(out_s);
make_stream(scon.in_s);
make_stream(scon.out_s);
init_stream(in_s, 8192);
if (tcp_force_recv(socket, in_s->data, 8) == 0)
init_stream(scon.in_s, 8192);
init_stream(scon.out_s, 8192);
switch (scp_vXs_accept(&scon, &(sdata)))
{
in_uint32_be(in_s, version);
in_uint32_be(in_s, size);
init_stream(in_s, 8192);
if (tcp_force_recv(socket, in_s->data, size - 8) == 0)
{
if (version == 0)
case SCP_SERVER_STATE_OK:
if (sdata->version == 0)
{
/* starts processing an scp v0 connection */
scp_v0_process(socket, in_s, out_s);
scp_v0_process(&scon, sdata);
}
#warning scp v1 is disabled
/* this is temporarily disabled...
else if (version == 1)
{
/ * starts processing an scp v0 connection * /
//scp_v1_process();
}*/
else
{
/* an unknown scp version was requested, so we shut down the */
/* connection (and log the fact) */
log_message(LOG_LEVEL_WARNING,"unknown protocol version specified. connection refused.");
//scp_v1_process();
}
}
case SCP_SERVER_STATE_VERSION_ERR:
/* an unknown scp version was requested, so we shut down the */
/* connection (and log the fact) */
log_message(LOG_LEVEL_WARNING,"unknown protocol version specified. connection refused.");
break;
case SCP_SERVER_STATE_NETWORK_ERR:
log_message(LOG_LEVEL_WARNING,"libscp network error.");
break;
case SCP_SERVER_STATE_SEQUENCE_ERR:
log_message(LOG_LEVEL_WARNING,"libscp sequence error.");
break;
case SCP_SERVER_STATE_INTERNAL_ERR:
/* internal error occurred (eg. malloc() error, ecc.) */
log_message(LOG_LEVEL_ERROR, "libscp internal error occurred.");
break;
default:
log_message(LOG_LEVEL_ALWAYS, "unknown return from scp_vXs_accept()");
}
g_tcp_close(socket);
free_stream(in_s);
free_stream(out_s);
g_tcp_close(scon.in_sck);
free_stream(scon.in_s);
free_stream(scon.out_s);
return 0;
}

2
sesman/scp.h
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@ -29,7 +29,7 @@
#define SCP_H
#include "scp_v0.h"
//#include "scp_v1.h"
#include "libscp.h"
/**
*

103
sesman/scp_v0.c
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@ -29,81 +29,62 @@
/******************************************************************************/
void DEFAULT_CC
scp_v0_process(int in_sck, struct stream* in_s, struct stream* out_s)
scp_v0_process(struct SCP_CONNECTION* c, struct SCP_SESSION* s)
{
int code;
int i;
int width;
int height;
int bpp;
int display;
char user[256];
char pass[256];
int code=0;
int display=0;
long data;
struct session_item* s_item;
in_uint16_be(in_s, code);
if (code == 0 || code == 10) /* check username - password, */
{ /* start session */
in_uint16_be(in_s, i);
in_uint8a(in_s, user, i);
user[i] = 0;
in_uint16_be(in_s, i);
in_uint8a(in_s, pass, i);
pass[i] = 0;
in_uint16_be(in_s, width);
in_uint16_be(in_s, height);
in_uint16_be(in_s, bpp);
data = auth_userpass(user, pass);
display = 0;
if (data)
data = auth_userpass(s->username, s->password);
if (data)
{
s_item = session_get_bydata(s->username, s->width, s->height, s->bpp);
if (s_item != 0)
{
s_item = session_get_bydata(user, width, height, bpp);
if (s_item != 0)
{
display = s_item->display;
auth_end(data);
/* don't set data to null here */
}
else
display = s_item->display;
auth_end(data);
/* don't set data to null here */
}
else
{
g_printf("pre auth");
if (1 == access_login_allowed(s->username))
{
g_printf("pre auth");
if (1 == access_login_allowed(user))
log_message(LOG_LEVEL_INFO, "granted TS access to user %s", s->username);
if (0 == code)
{
log_message(LOG_LEVEL_INFO,
"granted TS access to user %s", user);
if (0 == code)
{
log_message(LOG_LEVEL_INFO, "starting Xvnc session...");
display = session_start(width, height, bpp, user, pass,
data, SESMAN_SESSION_TYPE_XVNC);
}
else
{
log_message(LOG_LEVEL_INFO, "starting Xrdp session...");
display = session_start(width, height, bpp, user, pass,
data, SESMAN_SESSION_TYPE_XRDP);
}
log_message(LOG_LEVEL_INFO, "starting Xvnc session...");
display = session_start(s->width, s->height, s->bpp, s->username, s->password,
data, SESMAN_SESSION_TYPE_XVNC);
}
else
{
display = 0;
log_message(LOG_LEVEL_INFO, "starting Xrdp session...");
display = session_start(s->width, s->height, s->bpp, s->username, s->password,
data, SESMAN_SESSION_TYPE_XRDP);
}
}
if (display == 0)
else
{
auth_end(data);
data = 0;
display = 0;
}
}
init_stream(out_s, 8192);
out_uint32_be(out_s, 0); /* version */
out_uint32_be(out_s, 14); /* size */
out_uint16_be(out_s, 3); /* cmd */
out_uint16_be(out_s, data != 0); /* data */
out_uint16_be(out_s, display); /* data */
s_mark_end(out_s);
tcp_force_send(in_sck, out_s->data,
out_s->end - out_s->data);
if (display == 0)
{
auth_end(data);
data = 0;
scp_v0s_deny_connection(c);
}
else
{
scp_v0s_allow_connection(c, display);
}
}
else
{
scp_v0s_deny_connection(c);
}
}

4
sesman/scp_v0.h
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@ -28,6 +28,8 @@
#ifndef SCP_V0_H
#define SCP_V0_H
#include "libscp.h"
/**
*
* @brief processes the stream using scp version 0
@ -37,6 +39,6 @@
*
*/
void DEFAULT_CC
scp_v0_process(int in_sck, struct stream* in_s, struct stream* out_s);
scp_v0_process(struct SCP_CONNECTION* c, struct SCP_SESSION* s);
#endif

2
sesman/sesman.h
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@ -44,6 +44,8 @@
#include "thread.h"
#include "lock.h"
#include "libscp.h"
#ifndef SESMAN_PID_FILE
#define SESMAN_PID_FILE "./sesman.pid"
#endif

2
sesman/sig.c
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@ -135,7 +135,7 @@ sig_handler_thread(void* arg)
sig_sesman_session_end(SIGCHLD);
break;
/*case SIGKILL;
/* we die * /
/ * we die * /
LOG_DBG("sesman received SIGKILL",0);
sig_sesman_shutdown(recv_signal);
break;*/

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