added files from xrdp directory

1 files changed, 832 insertions, 0 deletions

diff --git a/common/os_calls.c b/common/os_calls.c
new file mode 100644
index 00000000..c05c740d
--- /dev/null
+++ b/common/os_calls.c
@@ -0,0 +1,832 @@
+/*
+   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 2004
+
+   generic operating system calls
+
+*/
+
+#ifdef _WIN32
+#include <windows.h>
+#include <winsock.h>
+#else
+#include <unistd.h>
+#include <pthread.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <dlfcn.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <openssl/rc4.h>
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+#include <openssl/bn.h>
+
+//#define MEMLEAK
+
+#ifdef _WIN32
+static CRITICAL_SECTION g_term_mutex;
+#else
+static pthread_mutex_t g_term_mutex = PTHREAD_MUTEX_INITIALIZER;
+#endif
+static int g_term = 0;
+
+#ifdef MEMLEAK
+#include "xrdp.h"
+#endif
+
+#ifdef MEMLEAK
+static int g_memsize = 0;
+static int g_memid = 0;
+static struct xrdp_list* g_memlist = 0;
+#endif
+
+/*****************************************************************************/
+int g_init_system(void)
+{
+#ifdef _WIN32
+  WSADATA w;
+
+  WSAStartup(2, &w);
+  InitializeCriticalSection(&g_term_mutex);
+#endif
+#ifdef MEMLEAK
+  g_memlist = xrdp_list_create();
+  printf("some info\n\r");
+  printf("sizeof xrdp_bitmap is %d\n\r", sizeof(struct xrdp_bitmap));
+  printf("sizeof xrdp_wm is %d\n\r", sizeof(struct xrdp_wm));
+  printf("sizeof stream is %d\n\r", sizeof(struct stream));
+#endif
+  return 0;
+}
+
+/*****************************************************************************/
+int g_exit_system(void)
+{
+#ifdef _WIN32
+  WSACleanup();
+  DeleteCriticalSection(&g_term_mutex);
+#endif
+#ifdef MEMLEAK
+  int i;
+  struct xrdp_mem* p;
+
+  for (i = 0; i < g_memlist->count; i++)
+  {
+    p = (struct xrdp_mem*)xrdp_list_get_item(g_memlist, i);
+    g_printf("leak size %d id %d\n\r", p->size, p->id);
+  }
+  g_printf("mem %d\n\r", g_memsize);
+  xrdp_list_delete(g_memlist);
+  g_memlist = 0;
+#endif
+  return 0;
+}
+
+/*****************************************************************************/
+void* g_malloc(int size, int zero)
+{
+#ifdef MEMLEAK
+  char* rv;
+  struct xrdp_mem* p;
+
+  rv = (char*)malloc(size + sizeof(struct xrdp_mem));
+  if (zero)
+    memset(rv, 0, size + sizeof(struct xrdp_mem));
+  g_memsize += size;
+  p = (struct xrdp_mem*)rv;
+  p->size = size;
+  p->id = g_memid;
+  if (g_memlist != 0)
+    xrdp_list_add_item(g_memlist, (int)p);
+  g_memid++;
+  return rv + sizeof(struct xrdp_mem);
+#else
+  char* rv;
+
+  rv = (char*)malloc(size);
+  if (zero)
+    memset(rv, 0, size);
+  return rv;
+#endif
+}
+
+/*****************************************************************************/
+void* g_malloc1(int size, int zero)
+{
+  char* rv;
+
+  rv = (char*)malloc(size);
+  if (zero)
+    memset(rv, 0, size);
+  return rv;
+}
+
+/*****************************************************************************/
+void g_free(void* ptr)
+{
+#ifdef MEMLEAK
+  struct xrdp_mem* p;
+  int i;
+
+  if (ptr != 0)
+  {
+    p = (struct xrdp_mem*)(((char*)ptr) - sizeof(struct xrdp_mem));
+    g_memsize -= p->size;
+    i = xrdp_list_index_of(g_memlist, (int)p);
+    if (i >= 0)
+      xrdp_list_remove_item(g_memlist, i);
+    free(p);
+  }
+#else
+  if (ptr != 0)
+  {
+    free(ptr);
+  }
+#endif
+}
+
+/*****************************************************************************/
+void g_free1(void* ptr)
+{
+  if (ptr != 0)
+  {
+    free(ptr);
+  }
+}
+
+/*****************************************************************************/
+void g_printf(char* format, ...)
+{
+  va_list ap;
+
+  va_start(ap, format);
+  vfprintf(stdout, format, ap);
+  va_end(ap);
+}
+
+/*****************************************************************************/
+void g_sprintf(char* dest, char* format, ...)
+{
+  va_list ap;
+
+  va_start(ap, format);
+  vsprintf(dest, format, ap);
+  va_end(ap);
+}
+
+/*****************************************************************************/
+/* produce a hex dump */
+void g_hexdump(char* p, int len)
+{
+  unsigned char* line;
+  int i;
+  int thisline;
+  int offset;
+
+  line = (unsigned char*)p;
+  offset = 0;
+  while (offset < len)
+  {
+    printf("%04x ", offset);
+    thisline = len - offset;
+    if (thisline > 16)
+      thisline = 16;
+    for (i = 0; i < thisline; i++)
+      printf("%02x ", line[i]);
+    for (; i < 16; i++)
+      printf("   ");
+    for (i = 0; i < thisline; i++)
+      printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
+    printf("\n");
+    offset += thisline;
+    line += thisline;
+  }
+}
+
+/*****************************************************************************/
+void g_memset(void* ptr, int val, int size)
+{
+  memset(ptr, val, size);
+}
+
+/*****************************************************************************/
+void g_memcpy(void* d_ptr, const void* s_ptr, int size)
+{
+  memcpy(d_ptr, s_ptr, size);
+}
+
+/*****************************************************************************/
+int g_getchar(void)
+{
+  return getchar();
+}
+
+/*****************************************************************************/
+int g_tcp_socket(void)
+{
+  int rv;
+  int i;
+
+  i = 1;
+  rv = socket(PF_INET, SOCK_STREAM, 0);
+  setsockopt(rv, IPPROTO_TCP, TCP_NODELAY, (void*)&i, sizeof(i));
+  return rv;
+}
+
+/*****************************************************************************/
+int g_tcp_local_socket(void)
+{
+  int rv;
+
+  rv = socket(PF_LOCAL, SOCK_STREAM, 0);
+  return rv;
+}
+
+/*****************************************************************************/
+void g_tcp_close(int sck)
+{
+  if (sck == 0)
+    return;
+#ifdef _WIN32
+  closesocket(sck);
+#else
+  close(sck);
+#endif
+}
+
+/*****************************************************************************/
+int g_tcp_connect(int sck, char* address, char* port)
+{
+  struct sockaddr_in s;
+  struct hostent* h;
+
+  g_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(address);
+  if (s.sin_addr.s_addr == INADDR_NONE)
+  {
+    h = gethostbyname(address);
+    if (h != 0)
+      if (h->h_name != 0)
+        if (h->h_addr_list != 0)
+          if ((*(h->h_addr_list)) != 0)
+            s.sin_addr.s_addr = *((int*)(*(h->h_addr_list)));
+  }
+  return connect(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
+}
+
+/*****************************************************************************/
+int g_tcp_set_non_blocking(int sck)
+{
+  unsigned long i;
+
+#ifdef _WIN32
+  i = 1;
+  ioctlsocket(sck, FIONBIO, &i);
+#else
+  i = fcntl(sck, F_GETFL);
+  i = i | O_NONBLOCK;
+  fcntl(sck, F_SETFL, i);
+#endif
+  return 0;
+}
+
+/*****************************************************************************/
+int g_tcp_bind(int sck, 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 = INADDR_ANY;
+  return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
+}
+
+/*****************************************************************************/
+int g_tcp_local_bind(int sck, char* port)
+{
+  struct sockaddr_un s;
+
+  memset(&s, 0, sizeof(struct sockaddr_un));
+  s.sun_family = AF_UNIX;
+  strcpy(s.sun_path, port);
+  return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_un));
+}
+
+/*****************************************************************************/
+int g_tcp_listen(int sck)
+{
+  return listen(sck, 2);
+}
+
+/*****************************************************************************/
+int g_tcp_accept(int sck)
+{
+  struct sockaddr_in s;
+#ifdef _WIN32
+  signed int i;
+#else
+  unsigned int i;
+#endif
+
+  i = sizeof(struct sockaddr_in);
+  memset(&s, 0, i);
+  return accept(sck, (struct sockaddr*)&s, &i);
+}
+
+/*****************************************************************************/
+void g_sleep(int msecs)
+{
+#ifdef _WIN32
+  Sleep(msecs);
+#else
+  usleep(msecs * 1000);
+#endif
+}
+
+/*****************************************************************************/
+int g_tcp_last_error_would_block(int sck)
+{
+#ifdef _WIN32
+  return WSAGetLastError() == WSAEWOULDBLOCK;
+#else
+  return errno == EWOULDBLOCK;
+#endif
+}
+
+/*****************************************************************************/
+int g_tcp_recv(int sck, void* ptr, int len, int flags)
+{
+  return recv(sck, ptr, len, flags);
+}
+
+/*****************************************************************************/
+int g_tcp_force_recv(int sck, char* data, int len)
+{
+  int rcvd;
+
+  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
+        return 1;
+    }
+    else if (rcvd == 0)
+      return 1;
+    else
+    {
+      data += rcvd;
+      len -= rcvd;
+    }
+  }
+  return 0;
+}
+
+/*****************************************************************************/
+int g_tcp_send(int sck, void* ptr, int len, int flags)
+{
+  return send(sck, ptr, len, flags);
+}
+
+/*****************************************************************************/
+int g_tcp_force_send(int sck, char* data, int len)
+{
+  int sent;
+
+  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
+        return 1;
+    }
+    else if (sent == 0)
+      return 1;
+    else
+    {
+      data += sent;
+      len -= sent;
+    }
+  }
+  return 0;
+}
+
+/*****************************************************************************/
+int g_tcp_select(int sck1, int sck2)
+{
+  fd_set rfds;
+  struct timeval time;
+  int max;
+  int rv;
+
+  time.tv_sec = 0;
+  time.tv_usec = 0;
+  FD_ZERO(&rfds);
+  FD_SET(((unsigned int)sck1), &rfds);
+  FD_SET(((unsigned int)sck2), &rfds);
+  max = sck1;
+  if (sck2 > max)
+    max = sck2;
+  rv = select(max + 1, &rfds, 0, 0, &time);
+  if (rv > 0)
+  {
+    rv = 0;
+    if (FD_ISSET(((unsigned int)sck1), &rfds))
+      rv = rv | 1;
+    if (FD_ISSET(((unsigned int)sck2), &rfds))
+      rv = rv | 2;
+  }
+  return rv;
+}
+
+/*****************************************************************************/
+int g_is_term(void)
+{
+  int rv;
+
+#ifdef _WIN32
+  EnterCriticalSection(&g_term_mutex);
+  rv = g_term;
+  LeaveCriticalSection(&g_term_mutex);
+#else
+  pthread_mutex_lock(&g_term_mutex);
+  rv = g_term;
+  pthread_mutex_unlock(&g_term_mutex);
+#endif
+  return rv;
+}
+
+/*****************************************************************************/
+void g_set_term(int in_val)
+{
+#ifdef _WIN32
+  EnterCriticalSection(&g_term_mutex);
+  g_term = in_val;
+  LeaveCriticalSection(&g_term_mutex);
+#else
+  pthread_mutex_lock(&g_term_mutex);
+  g_term = in_val;
+  pthread_mutex_unlock(&g_term_mutex);
+#endif
+}
+
+/*****************************************************************************/
+#ifdef _WIN32
+int g_thread_create(unsigned long (__stdcall * start_routine)(void*), void* arg)
+{
+  DWORD thread;
+
+  return !CreateThread(0, 0, start_routine, arg, 0, &thread);
+}
+#else
+int g_thread_create(void* (* start_routine)(void*), void* arg)
+{
+  pthread_t thread;
+
+  return pthread_create(&thread, 0, start_routine, arg);
+}
+#endif
+
+/* rc4 stuff */
+
+/*****************************************************************************/
+void* g_rc4_info_create(void)
+{
+  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)
+{
+  return strlen(text);
+}
+
+/*****************************************************************************/
+char* g_strcpy(char* dest, char* src)
+{
+  return strcpy(dest, src);
+}
+
+/*****************************************************************************/
+char* g_strncpy(char* dest, char* src, int len)
+{
+  char* rv;
+
+  rv = strncpy(dest, src, len);
+  dest[len] = 0;
+  return rv;
+}
+
+/*****************************************************************************/
+char* g_strcat(char* dest, char* src)
+{
+  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);
+}