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963 lines
20 KiB
963 lines
20 KiB
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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xrdp: A Remote Desktop Protocol server.
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Copyright (C) Jay Sorg 2004-2005
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generic operating system calls
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put all the os / arch define in here you want
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*/
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#ifdef _WIN32
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#include <windows.h>
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#include <winsock.h>
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#else
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#include <unistd.h>
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#include <pthread.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <dlfcn.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <signal.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <openssl/rc4.h>
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#include <openssl/md5.h>
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#include <openssl/sha.h>
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#include <openssl/bn.h>
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//#define MEMLEAK
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#ifdef _WIN32
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static CRITICAL_SECTION g_term_mutex;
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#else
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static pthread_mutex_t g_term_mutex = PTHREAD_MUTEX_INITIALIZER;
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#endif
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static int g_term = 0;
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#ifdef MEMLEAK
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#include "/home/j/cvs/xrdp/xrdp/xrdp.h"
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#endif
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#ifdef MEMLEAK
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static int g_memsize = 0;
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static int g_memid = 0;
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static struct xrdp_list* g_memlist = 0;
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#endif
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/* forward declarations */
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void g_printf(char* format, ...);
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void pipe_sig(int sig_num);
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/*****************************************************************************/
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int g_init_system(void)
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{
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#ifdef _WIN32
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WSADATA w;
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WSAStartup(2, &w);
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InitializeCriticalSection(&g_term_mutex);
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#else
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signal(SIGPIPE, pipe_sig);
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#endif
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#ifdef MEMLEAK
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g_memlist = xrdp_list_create();
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g_printf("some info\n\r");
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g_printf("sizeof xrdp_bitmap is %d\n\r", sizeof(struct xrdp_bitmap));
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g_printf("sizeof xrdp_wm is %d\n\r", sizeof(struct xrdp_wm));
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g_printf("sizeof stream is %d\n\r", sizeof(struct stream));
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#endif
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return 0;
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}
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/*****************************************************************************/
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int g_exit_system(void)
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{
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#ifdef _WIN32
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WSACleanup();
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DeleteCriticalSection(&g_term_mutex);
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#endif
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#ifdef MEMLEAK
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int i;
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struct xrdp_mem* p;
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for (i = 0; i < g_memlist->count; i++)
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{
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p = (struct xrdp_mem*)xrdp_list_get_item(g_memlist, i);
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g_printf("leak size %d id %d\n\r", p->size, p->id);
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}
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g_printf("mem %d\n\r", g_memsize);
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xrdp_list_delete(g_memlist);
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g_memlist = 0;
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#endif
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return 0;
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}
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/*****************************************************************************/
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void* g_malloc(int size, int zero)
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{
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#ifdef MEMLEAK
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char* rv;
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struct xrdp_mem* p;
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rv = (char*)malloc(size + sizeof(struct xrdp_mem));
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if (zero)
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{
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memset(rv, 0, size + sizeof(struct xrdp_mem));
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}
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g_memsize += size;
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p = (struct xrdp_mem*)rv;
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p->size = size;
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p->id = g_memid;
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if (g_memlist != 0)
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{
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xrdp_list_add_item(g_memlist, (int)p);
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}
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g_memid++;
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return rv + sizeof(struct xrdp_mem);
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#else
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char* rv;
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rv = (char*)malloc(size);
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if (zero)
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{
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memset(rv, 0, size);
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}
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return rv;
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#endif
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}
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/*****************************************************************************/
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void* g_malloc1(int size, int zero)
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{
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char* rv;
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rv = (char*)malloc(size);
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if (zero)
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{
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memset(rv, 0, size);
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}
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return rv;
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}
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/*****************************************************************************/
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void g_free(void* ptr)
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{
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#ifdef MEMLEAK
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struct xrdp_mem* p;
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int i;
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if (ptr != 0)
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{
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p = (struct xrdp_mem*)(((char*)ptr) - sizeof(struct xrdp_mem));
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g_memsize -= p->size;
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i = xrdp_list_index_of(g_memlist, (int)p);
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if (i >= 0)
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{
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xrdp_list_remove_item(g_memlist, i);
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}
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free(p);
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}
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#else
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if (ptr != 0)
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{
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free(ptr);
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}
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#endif
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}
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/*****************************************************************************/
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void g_free1(void* ptr)
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{
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if (ptr != 0)
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{
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free(ptr);
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}
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}
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/*****************************************************************************/
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void g_printf(char* format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vfprintf(stdout, format, ap);
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va_end(ap);
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}
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/*****************************************************************************/
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void g_sprintf(char* dest, char* format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsprintf(dest, format, ap);
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va_end(ap);
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}
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/*****************************************************************************/
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/* produce a hex dump */
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void g_hexdump(char* p, int len)
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{
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unsigned char* line;
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int i;
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int thisline;
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int offset;
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line = (unsigned char*)p;
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offset = 0;
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while (offset < len)
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{
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g_printf("%04x ", offset);
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thisline = len - offset;
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if (thisline > 16)
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{
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thisline = 16;
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}
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for (i = 0; i < thisline; i++)
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{
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g_printf("%02x ", line[i]);
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}
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for (; i < 16; i++)
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{
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g_printf(" ");
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}
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for (i = 0; i < thisline; i++)
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{
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g_printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
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}
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g_printf("\n\r");
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offset += thisline;
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line += thisline;
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}
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}
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/*****************************************************************************/
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void g_memset(void* ptr, int val, int size)
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{
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memset(ptr, val, size);
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}
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/*****************************************************************************/
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void g_memcpy(void* d_ptr, const void* s_ptr, int size)
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{
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memcpy(d_ptr, s_ptr, size);
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}
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/*****************************************************************************/
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int g_getchar(void)
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{
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return getchar();
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}
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/*****************************************************************************/
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int g_tcp_set_no_delay(int sck)
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{
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int i;
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i = 1;
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setsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (void*)&i, sizeof(i));
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return 0;
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}
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/*****************************************************************************/
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int g_tcp_socket(void)
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{
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int rv;
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int i;
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i = 1;
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rv = socket(PF_INET, SOCK_STREAM, 0);
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setsockopt(rv, IPPROTO_TCP, TCP_NODELAY, (void*)&i, sizeof(i));
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return rv;
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}
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/*****************************************************************************/
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int g_tcp_local_socket(void)
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{
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int rv;
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rv = socket(PF_LOCAL, SOCK_STREAM, 0);
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return rv;
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}
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/*****************************************************************************/
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void g_tcp_close(int sck)
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{
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if (sck == 0)
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{
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return;
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}
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#ifdef _WIN32
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closesocket(sck);
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#else
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close(sck);
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#endif
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}
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/*****************************************************************************/
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int g_tcp_connect(int sck, char* address, char* port)
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{
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struct sockaddr_in s;
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struct hostent* h;
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g_memset(&s, 0, sizeof(struct sockaddr_in));
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s.sin_family = AF_INET;
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s.sin_port = htons(atoi(port));
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s.sin_addr.s_addr = inet_addr(address);
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if (s.sin_addr.s_addr == INADDR_NONE)
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{
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h = gethostbyname(address);
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if (h != 0)
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{
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if (h->h_name != 0)
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{
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if (h->h_addr_list != 0)
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{
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if ((*(h->h_addr_list)) != 0)
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{
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s.sin_addr.s_addr = *((int*)(*(h->h_addr_list)));
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}
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}
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}
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}
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}
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return connect(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
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}
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/*****************************************************************************/
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int g_tcp_set_non_blocking(int sck)
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{
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unsigned long i;
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#ifdef _WIN32
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i = 1;
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ioctlsocket(sck, FIONBIO, &i);
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#else
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i = fcntl(sck, F_GETFL);
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i = i | O_NONBLOCK;
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fcntl(sck, F_SETFL, i);
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#endif
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return 0;
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}
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/*****************************************************************************/
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int g_tcp_bind(int sck, char* port)
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{
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struct sockaddr_in s;
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memset(&s, 0, sizeof(struct sockaddr_in));
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s.sin_family = AF_INET;
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s.sin_port = htons(atoi(port));
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s.sin_addr.s_addr = INADDR_ANY;
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return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
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}
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/*****************************************************************************/
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int g_tcp_local_bind(int sck, char* port)
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{
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struct sockaddr_un s;
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memset(&s, 0, sizeof(struct sockaddr_un));
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s.sun_family = AF_UNIX;
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strcpy(s.sun_path, port);
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return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_un));
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}
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/*****************************************************************************/
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int g_tcp_listen(int sck)
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{
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return listen(sck, 2);
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}
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/*****************************************************************************/
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int g_tcp_accept(int sck)
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{
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struct sockaddr_in s;
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#ifdef _WIN32
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signed int i;
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#else
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unsigned int i;
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#endif
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i = sizeof(struct sockaddr_in);
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memset(&s, 0, i);
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return accept(sck, (struct sockaddr*)&s, &i);
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}
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/*****************************************************************************/
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void g_sleep(int msecs)
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{
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#ifdef _WIN32
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Sleep(msecs);
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#else
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usleep(msecs * 1000);
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#endif
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}
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/*****************************************************************************/
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int g_tcp_last_error_would_block(int sck)
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{
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#ifdef _WIN32
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return WSAGetLastError() == WSAEWOULDBLOCK;
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#else
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return errno == EWOULDBLOCK;
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#endif
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}
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/*****************************************************************************/
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int g_tcp_recv(int sck, void* ptr, int len, int flags)
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{
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return recv(sck, ptr, len, flags);
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}
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/*****************************************************************************/
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int g_tcp_force_recv(int sck, char* data, int len)
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{
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int rcvd;
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while (len > 0)
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{
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rcvd = g_tcp_recv(sck, data, len, 0);
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if (rcvd == -1)
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{
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if (g_tcp_last_error_would_block(sck))
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{
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g_sleep(1);
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}
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else
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{
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return 1;
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}
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}
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else if (rcvd == 0)
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{
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return 1;
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}
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else
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{
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data += rcvd;
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len -= rcvd;
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}
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}
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return 0;
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}
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/*****************************************************************************/
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int g_tcp_send(int sck, void* ptr, int len, int flags)
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{
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return send(sck, ptr, len, flags);
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}
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/*****************************************************************************/
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int g_tcp_force_send(int sck, char* data, int len)
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{
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int sent;
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while (len > 0)
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{
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sent = g_tcp_send(sck, data, len, 0);
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if (sent == -1)
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{
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if (g_tcp_last_error_would_block(sck))
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{
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g_sleep(1);
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}
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else
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{
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return 1;
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}
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}
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else if (sent == 0)
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{
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return 1;
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}
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else
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{
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data += sent;
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len -= sent;
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}
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}
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return 0;
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}
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/*****************************************************************************/
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int g_tcp_select(int sck1, int sck2)
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{
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fd_set rfds;
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struct timeval time;
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int max;
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int rv;
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time.tv_sec = 0;
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time.tv_usec = 0;
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FD_ZERO(&rfds);
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if (sck1 > 0)
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{
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FD_SET(((unsigned int)sck1), &rfds);
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}
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if (sck2 > 0)
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{
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FD_SET(((unsigned int)sck2), &rfds);
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}
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max = sck1;
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if (sck2 > max)
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{
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max = sck2;
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}
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rv = select(max + 1, &rfds, 0, 0, &time);
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if (rv > 0)
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{
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rv = 0;
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if (FD_ISSET(((unsigned int)sck1), &rfds))
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{
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rv = rv | 1;
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}
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if (FD_ISSET(((unsigned int)sck2), &rfds))
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{
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rv = rv | 2;
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}
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}
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return rv;
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}
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/*****************************************************************************/
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int g_is_term(void)
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{
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int rv;
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#ifdef _WIN32
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EnterCriticalSection(&g_term_mutex);
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rv = g_term;
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LeaveCriticalSection(&g_term_mutex);
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#else
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pthread_mutex_lock(&g_term_mutex);
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rv = g_term;
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pthread_mutex_unlock(&g_term_mutex);
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#endif
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return rv;
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}
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|
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/*****************************************************************************/
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void g_set_term(int in_val)
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{
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#ifdef _WIN32
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EnterCriticalSection(&g_term_mutex);
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g_term = in_val;
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LeaveCriticalSection(&g_term_mutex);
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#else
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pthread_mutex_lock(&g_term_mutex);
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g_term = in_val;
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pthread_mutex_unlock(&g_term_mutex);
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#endif
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}
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|
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/*****************************************************************************/
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#ifdef XRDP_LIB
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|
/* this is so libxrdp don't require libpthread */
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|
#elif defined(_WIN32)
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int g_thread_create(unsigned long (__stdcall * start_routine)(void*), void* arg)
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|
{
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DWORD thread;
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return !CreateThread(0, 0, start_routine, arg, 0, &thread);
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}
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#else
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int g_thread_create(void* (* start_routine)(void*), void* arg)
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{
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pthread_t thread;
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return pthread_create(&thread, 0, start_routine, arg);
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}
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#endif
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|
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/* rc4 stuff */
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|
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/*****************************************************************************/
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|
void* g_rc4_info_create(void)
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|
{
|
|
return g_malloc(sizeof(RC4_KEY), 1);;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_rc4_info_delete(void* rc4_info)
|
|
{
|
|
g_free(rc4_info);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_rc4_set_key(void* rc4_info, char* key, int len)
|
|
{
|
|
RC4_set_key((RC4_KEY*)rc4_info, len, (unsigned char*)key);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_rc4_crypt(void* rc4_info, char* data, int len)
|
|
{
|
|
RC4((RC4_KEY*)rc4_info, len, (unsigned char*)data, (unsigned char*)data);
|
|
}
|
|
|
|
/* sha1 stuff */
|
|
|
|
/*****************************************************************************/
|
|
void* g_sha1_info_create(void)
|
|
{
|
|
return g_malloc(sizeof(SHA_CTX), 1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_sha1_info_delete(void* sha1_info)
|
|
{
|
|
g_free(sha1_info);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_sha1_clear(void* sha1_info)
|
|
{
|
|
SHA1_Init((SHA_CTX*)sha1_info);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_sha1_transform(void* sha1_info, char* data, int len)
|
|
{
|
|
SHA1_Update((SHA_CTX*)sha1_info, data, len);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_sha1_complete(void* sha1_info, char* data)
|
|
{
|
|
SHA1_Final((unsigned char*)data, (SHA_CTX*)sha1_info);
|
|
}
|
|
|
|
/* md5 stuff */
|
|
|
|
/*****************************************************************************/
|
|
void* g_md5_info_create(void)
|
|
{
|
|
return g_malloc(sizeof(MD5_CTX), 1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_md5_info_delete(void* md5_info)
|
|
{
|
|
g_free(md5_info);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_md5_clear(void* md5_info)
|
|
{
|
|
MD5_Init((MD5_CTX*)md5_info);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_md5_transform(void* md5_info, char* data, int len)
|
|
{
|
|
MD5_Update((MD5_CTX*)md5_info, data, len);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_md5_complete(void* md5_info, char* data)
|
|
{
|
|
MD5_Final((unsigned char*)data, (MD5_CTX*)md5_info);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_mod_exp(char* out, char* in, char* mod, char* exp)
|
|
{
|
|
BN_CTX* ctx;
|
|
BIGNUM lmod;
|
|
BIGNUM lexp;
|
|
BIGNUM lin;
|
|
BIGNUM lout;
|
|
int rv;
|
|
|
|
ctx = BN_CTX_new();
|
|
BN_init(&lmod);
|
|
BN_init(&lexp);
|
|
BN_init(&lin);
|
|
BN_init(&lout);
|
|
BN_bin2bn((unsigned char*)mod, 64, &lmod);
|
|
BN_bin2bn((unsigned char*)exp, 64, &lexp);
|
|
BN_bin2bn((unsigned char*)in, 64, &lin);
|
|
BN_mod_exp(&lout, &lin, &lexp, &lmod, ctx);
|
|
rv = BN_bn2bin(&lout, (unsigned char*)out);
|
|
BN_free(&lin);
|
|
BN_free(&lout);
|
|
BN_free(&lexp);
|
|
BN_free(&lmod);
|
|
BN_CTX_free(ctx);
|
|
return rv;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_random(char* data, int len)
|
|
{
|
|
#ifdef _WIN32
|
|
memset(data, 0x44, len);
|
|
#else
|
|
int fd;
|
|
|
|
memset(data, 0x44, len);
|
|
fd = open("/dev/urandom", O_RDONLY);
|
|
if (fd == -1)
|
|
{
|
|
fd = open("/dev/random", O_RDONLY);
|
|
}
|
|
if (fd != -1)
|
|
{
|
|
read(fd, data, len);
|
|
close(fd);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_abs(int i)
|
|
{
|
|
return abs(i);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_memcmp(void* s1, void* s2, int len)
|
|
{
|
|
return memcmp(s1, s2, len);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_file_open(char* file_name)
|
|
{
|
|
#ifdef _WIN32
|
|
return (int)CreateFile(file_name, GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
0, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
|
|
#else
|
|
return open(file_name, O_RDWR | O_CREAT);
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_file_close(int fd)
|
|
{
|
|
#ifdef _WIN32
|
|
CloseHandle((HANDLE)fd);
|
|
#else
|
|
close(fd);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* read from file*/
|
|
int g_file_read(int fd, char* ptr, int len)
|
|
{
|
|
#ifdef _WIN32
|
|
if (ReadFile((HANDLE)fd, (LPVOID)ptr, (DWORD)len, (LPDWORD)&len, 0))
|
|
{
|
|
return len;
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
#else
|
|
return read(fd, ptr, len);
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* write to file */
|
|
int g_file_write(int fd, char* ptr, int len)
|
|
{
|
|
#ifdef _WIN32
|
|
if (WriteFile((HANDLE)fd, (LPVOID)ptr, (DWORD)len, (LPDWORD)&len, 0))
|
|
{
|
|
return len;
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
#else
|
|
return write(fd, ptr, len);
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* move file pointer */
|
|
int g_file_seek(int fd, int offset)
|
|
{
|
|
#ifdef _WIN32
|
|
return SetFilePointer((HANDLE)fd, offset, 0, FILE_BEGIN);
|
|
#else
|
|
return lseek(fd, offset, SEEK_SET);
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* do a write lock on a file */
|
|
/* return boolean */
|
|
int g_file_lock(int fd, int start, int len)
|
|
{
|
|
#ifdef _WIN32
|
|
return LockFile((HANDLE)fd, start, 0, len, 0);
|
|
#else
|
|
struct flock lock;
|
|
|
|
lock.l_type = F_WRLCK;
|
|
lock.l_whence = SEEK_SET;
|
|
lock.l_start = start;
|
|
lock.l_len = len;
|
|
if (fcntl(fd, F_SETLK, &lock) == -1)
|
|
{
|
|
return 0;
|
|
}
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_strlen(char* text)
|
|
{
|
|
if (text == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return strlen(text);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
char* g_strcpy(char* dest, char* src)
|
|
{
|
|
if (src == 0 && dest != 0)
|
|
{
|
|
dest[0] = 0;
|
|
return dest;
|
|
}
|
|
if (dest == 0 || src == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return strcpy(dest, src);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
char* g_strncpy(char* dest, char* src, int len)
|
|
{
|
|
char* rv;
|
|
|
|
if (src == 0 && dest != 0)
|
|
{
|
|
dest[0] = 0;
|
|
return dest;
|
|
}
|
|
if (dest == 0 || src == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
rv = strncpy(dest, src, len);
|
|
dest[len] = 0;
|
|
return rv;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
char* g_strcat(char* dest, char* src)
|
|
{
|
|
if (dest == 0 || src == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return strcat(dest, src);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
char* g_strdup(char* in)
|
|
{
|
|
int len;
|
|
char* p;
|
|
|
|
if (in == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
len = g_strlen(in);
|
|
p = (char*)g_malloc(len + 1, 0);
|
|
g_strcpy(p, in);
|
|
return p;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_strcmp(char* c1, char* c2)
|
|
{
|
|
return strcmp(c1, c2);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_load_library(char* in)
|
|
{
|
|
return (int)dlopen(in, RTLD_LOCAL | RTLD_LAZY);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_free_library(int lib)
|
|
{
|
|
if (lib == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return dlclose((void*)lib);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* returns NULL if not found */
|
|
void* g_get_proc_address(int lib, char* name)
|
|
{
|
|
if (lib == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return dlsym((void*)lib, name);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int g_system(char* aexec)
|
|
{
|
|
return system(aexec);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void g_signal(int sig_num, void (*func)(int))
|
|
{
|
|
signal(sig_num, func);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void pipe_sig(int sig_num)
|
|
{
|
|
/* do nothing */
|
|
g_printf("got SIGPIPE(%d)\n\r", sig_num);
|
|
}
|