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xrdp-proprietary/common/os_calls.c

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19 KiB

/*
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 2004-2005
generic operating system calls
put all the os / arch define in here you want
*/
#if defined(_WIN32)
#include <windows.h>
#include <winsock.h>
#else
#include <unistd.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 <sys/wait.h>
#include <sys/stat.h>
#include <dlfcn.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>
#include <fcntl.h>
#include <pwd.h>
#include <time.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
/* for clearenv() */
#if defined(_WIN32)
#else
extern char** environ;
#endif
/*****************************************************************************/
void*
g_malloc(int size, int zero)
{
char* rv;
rv = (char*)malloc(size);
if (zero)
{
memset(rv, 0, size);
}
return rv;
}
/*****************************************************************************/
void
g_free(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)
{
g_printf("%04x ", offset);
thisline = len - offset;
if (thisline > 16)
{
thisline = 16;
}
for (i = 0; i < thisline; i++)
{
g_printf("%02x ", line[i]);
}
for (; i < 16; i++)
{
g_printf(" ");
}
for (i = 0; i < thisline; i++)
{
g_printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
}
g_printf("\r\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_set_no_delay(int sck)
{
int i;
i = 1;
#if defined(_WIN32)
setsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (char*)&i, sizeof(i));
#else
setsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (void*)&i, sizeof(i));
#endif
return 0;
}
/*****************************************************************************/
int
g_tcp_socket(void)
{
int rv;
int i;
i = 1;
rv = socket(PF_INET, SOCK_STREAM, 0);
#if defined(_WIN32)
setsockopt(rv, IPPROTO_TCP, TCP_NODELAY, (char*)&i, sizeof(i));
#else
setsockopt(rv, IPPROTO_TCP, TCP_NODELAY, (void*)&i, sizeof(i));
#endif
return rv;
}
/*****************************************************************************/
int
g_tcp_local_socket(void)
{
#if defined(_WIN32)
return 0;
#else
return socket(PF_LOCAL, SOCK_STREAM, 0);
#endif
}
/*****************************************************************************/
void
g_tcp_close(int sck)
{
if (sck == 0)
{
return;
}
shutdown(sck, 2);
#if defined(_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;
#if defined(_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)
{
#if defined(_WIN32)
return -1;
#else
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));
#endif
}
/*****************************************************************************/
int
g_tcp_listen(int sck)
{
return listen(sck, 2);
}
/*****************************************************************************/
int
g_tcp_accept(int sck)
{
struct sockaddr_in s;
#if defined(_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)
{
#if defined(_WIN32)
Sleep(msecs);
#else
usleep(msecs * 1000);
#endif
}
/*****************************************************************************/
int
g_tcp_last_error_would_block(int sck)
{
#if defined(_WIN32)
return WSAGetLastError() == WSAEWOULDBLOCK;
#else
return errno == EWOULDBLOCK;
#endif
}
/*****************************************************************************/
int
g_tcp_recv(int sck, void* ptr, int len, int flags)
{
#if defined(_WIN32)
return recv(sck, (char*)ptr, len, flags);
#else
return recv(sck, ptr, len, flags);
#endif
}
/*****************************************************************************/
int
g_tcp_send(int sck, void* ptr, int len, int flags)
{
#if defined(_WIN32)
return send(sck, (char*)ptr, len, flags);
#else
return send(sck, ptr, len, flags);
#endif
}
/*****************************************************************************/
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);
if (sck1 > 0)
{
FD_SET(((unsigned int)sck1), &rfds);
}
if (sck2 > 0)
{
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;
}
/*****************************************************************************/
void
g_random(char* data, int len)
{
#if defined(_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);
}
/*****************************************************************************/
/* returns -1 on error, else return handle or file descriptor */
int
g_file_open(char* file_name)
{
#if defined(_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)
{
#if defined(_WIN32)
CloseHandle((HANDLE)fd);
#else
close(fd);
#endif
return 0;
}
/*****************************************************************************/
/* read from file*/
int
g_file_read(int fd, char* ptr, int len)
{
#if defined(_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)
{
#if defined(_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)
{
#if defined(_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)
{
#if defined(_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_set_file_rights(char* filename, int read, int write)
{
#if defined(_WIN32)
#else
int flags;
flags = read ? S_IRUSR : 0;
flags |= write ? S_IWUSR : 0;
chmod(filename, flags);
#endif
return 0;
}
/*****************************************************************************/
int
g_mkdir(char* dirname)
{
#if defined(_WIN32)
#else
mkdir(dirname, S_IRWXU);
#endif
return 0;
}
/*****************************************************************************/
char*
g_get_current_dir(char* dirname, int maxlen)
{
#if defined(_WIN32)
return GetCurrentDirectory(maxlen, dirname);
#else
return getcwd(dirname, maxlen);
#endif
}
/*****************************************************************************/
int
g_set_current_dir(char* dirname)
{
#if defined(_WIN32)
return SetCurrentDirectory(dirname);
#else
return chdir(dirname);
#endif
}
/*****************************************************************************/
/* returns non zero if the file exists */
int
g_file_exist(char* filename)
{
#if defined(_WIN32)
return 0; // use FindFirstFile();
#else
return access(filename, F_OK) == 0;
#endif
}
/*****************************************************************************/
/* returns non zero if the file was deleted */
int
g_file_delete(char* filename)
{
#if defined(_WIN32)
return DeleteFile(filename);
#else
return unlink(filename) != -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 dest;
}
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_strncmp(char* c1, char* c2, int len)
{
return strncmp(c1, c2, len);
}
/*****************************************************************************/
int
g_strncasecmp(char* c1, char* c2, int len)
{
#if defined(_WIN32)
return strnicmp(c1, c2, len);
#else
return strncasecmp(c1, c2, len);
#endif
}
/*****************************************************************************/
int
g_atoi(char* str)
{
return atoi(str);
}
/*****************************************************************************/
int
g_pos(char* str, char* to_find)
{
char* pp;
pp = strstr(str, to_find);
if (pp == 0)
{
return -1;
}
return (pp - str);
}
/*****************************************************************************/
long
g_load_library(char* in)
{
#if defined(_WIN32)
return (long)LoadLibrary(in);
#else
return (long)dlopen(in, RTLD_LOCAL | RTLD_LAZY);
#endif
}
/*****************************************************************************/
int
g_free_library(long lib)
{
if (lib == 0)
{
return 0;
}
#if defined(_WIN32)
return FreeLibrary((HMODULE)lib);
#else
return dlclose((void*)lib);
#endif
}
/*****************************************************************************/
/* returns NULL if not found */
void*
g_get_proc_address(long lib, char* name)
{
if (lib == 0)
{
return 0;
}
#if defined(_WIN32)
return GetProcAddress((HMODULE)lib, name);
#else
return dlsym((void*)lib, name);
#endif
}
/*****************************************************************************/
int
g_system(char* aexec)
{
#if defined(_WIN32)
return 0;
#else
return system(aexec);
#endif
}
/*****************************************************************************/
void
g_execvp(char* p1, char* args[])
{
#if defined(_WIN32)
#else
execvp(p1, args);
#endif
}
/*****************************************************************************/
int
g_execlp3(char* a1, char* a2, char* a3)
{
#if defined(_WIN32)
return 0;
#else
return execlp(a1, a2, a3, (void*)0);
#endif
}
/*****************************************************************************/
int
g_execlp11(char* a1, char* a2, char* a3, char* a4, char* a5, char* a6,
char* a7, char* a8, char* a9, char* a10, char* a11)
{
#if defined(_WIN32)
return 0;
#else
return execlp(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, (void*)0);
#endif
}
/*****************************************************************************/
void
g_signal(int sig_num, void (*func)(int))
{
#if defined(_WIN32)
#else
signal(sig_num, func);
#endif
}
/*****************************************************************************/
void
g_signal_child_stop(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGCHLD, func);
#endif
}
/*****************************************************************************/
void
g_unset_signals(void)
{
#if defined(_WIN32)
#else
sigset_t mask;
sigemptyset(&mask);
sigprocmask(SIG_SETMASK, &mask, NULL);
#endif
}
/*****************************************************************************/
int
g_fork(void)
{
#if defined(_WIN32)
return 0;
#else
return fork();
#endif
}
/*****************************************************************************/
int
g_setgid(int pid)
{
#if defined(_WIN32)
return 0;
#else
return setgid(pid);
#endif
}
/*****************************************************************************/
int
g_setuid(int pid)
{
#if defined(_WIN32)
return 0;
#else
return setuid(pid);
#endif
}
/*****************************************************************************/
int
g_waitchild(void)
{
#if defined(_WIN32)
return 0;
#else
int wstat;
return waitpid(0, &wstat, WNOHANG);
#endif
}
/*****************************************************************************/
int
g_waitpid(int pid)
{
#if defined(_WIN32)
return 0;
#else
return waitpid(pid, 0, 0);
#endif
}
/*****************************************************************************/
void
g_clearenv(void)
{
#if defined(_WIN32)
#else
environ = 0;
#endif
}
/*****************************************************************************/
int
g_setenv(char* name, char* value, int rewrite)
{
#if defined(_WIN32)
return 0;
#else
return setenv(name, value, rewrite);
#endif
}
/*****************************************************************************/
char*
g_getenv(char* name)
{
#if defined(_WIN32)
return 0;
#else
return getenv(name);
#endif
}
/*****************************************************************************/
int
g_exit(int exit_code)
{
_exit(exit_code);
return 0;
}
/*****************************************************************************/
int
g_getpid(void)
{
#if defined(_WIN32)
return 0;
#else
return getpid();
#endif
}
/*****************************************************************************/
int
g_sigterm(int pid)
{
#if defined(_WIN32)
return 0;
#else
return kill(pid, SIGTERM);
#endif
}
/*****************************************************************************/
int
g_getuser_info(char* username, int* gid, int* uid, char* shell, char* dir,
char* gecos)
{
#if defined(_WIN32)
#else
struct passwd* pwd_1;
pwd_1 = getpwnam(username);
if (pwd_1 != 0)
{
if (gid != 0)
{
*gid = pwd_1->pw_gid;
}
if (uid != 0)
{
*uid = pwd_1->pw_uid;
}
if (dir != 0)
{
g_strcpy(dir, pwd_1->pw_dir);
}
if (shell != 0)
{
g_strcpy(shell, pwd_1->pw_shell);
}
if (gecos != 0)
{
g_strcpy(gecos, pwd_1->pw_gecos);
}
}
#endif
return 0;
}
/*****************************************************************************/
/* returns the time since the Epoch (00:00:00 UTC, January 1, 1970),
measured in seconds. */
int
g_time1(void)
{
#if defined(_WIN32)
return 0;
#else
return time(0);
#endif
}