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088bd2d811
xrdp/common/os_calls.c
Koichiro IWAO 088bd2d811 common: implement g_file_readable for WIN32
2017-06-12 16:57:04 +09:00

3707 lines
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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2014
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* generic operating system calls
*
* put all the os / arch define in here you want
*/
/* To test for Windows (64 bit or 32 bit) use _WIN32 and _WIN64 in addition
for 64 bit windows. _WIN32 is defined for both.
To test for Linux use __linux__.
To test for BSD use BSD */
#if defined(HAVE_CONFIG_H)
#include "config_ac.h"
#endif
#if defined(_WIN32)
#include <windows.h>
#include <winsock.h>
#else
/* fix for solaris 10 with gcc 3.3.2 problem */
#if defined(sun) || defined(__sun)
#define ctid_t id_t
#endif
#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/times.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <dlfcn.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>
#include <fcntl.h>
#include <pwd.h>
#include <time.h>
#include <grp.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <locale.h>
/* this is so we can use #ifdef BSD later */
/* This is the recommended way of detecting BSD in the
FreeBSD Porter's Handbook. */
#if (defined(__unix__) || defined(unix)) && !defined(USG)
#include <sys/param.h>
#endif
#include "os_calls.h"
#include "arch.h"
#include "log.h"
/* for clearenv() */
#if defined(_WIN32)
#else
extern char **environ;
#endif
#if defined(__linux__)
#include <linux/unistd.h>
#endif
/* sys/ucred.h needs to be included to use struct xucred
* in FreeBSD and OS X. No need for other BSDs except GNU/kFreeBSD */
#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__FreeBSD_kernel__)
#include <sys/ucred.h>
#endif
/* for solaris */
#if !defined(PF_LOCAL)
#define PF_LOCAL AF_UNIX
#endif
#if !defined(INADDR_NONE)
#define INADDR_NONE ((unsigned long)-1)
#endif
/*****************************************************************************/
int
g_rm_temp_dir(void)
{
return 0;
}
/*****************************************************************************/
int
g_mk_temp_dir(const char *app_name)
{
if (!g_directory_exist(XRDP_SOCKET_PATH))
{
if (!g_create_dir(XRDP_SOCKET_PATH))
{
/* if failed, still check if it got created by someone else */
if (!g_directory_exist(XRDP_SOCKET_PATH))
{
printf("g_mk_temp_dir: g_create_dir(%s) failed\n",
XRDP_SOCKET_PATH);
return 1;
}
}
g_chmod_hex(XRDP_SOCKET_PATH, 0x1777);
}
return 0;
}
/*****************************************************************************/
void
g_init(const char *app_name)
{
#if defined(_WIN32)
WSADATA wsadata;
WSAStartup(2, &wsadata);
#endif
/* In order to get g_mbstowcs and g_wcstombs to work properly with
UTF-8 non-ASCII characters, LC_CTYPE cannot be "C" or blank.
To select UTF-8 encoding without specifying any countries/languages,
"C.UTF-8" is used but provided in few systems.
See also: https://sourceware.org/glibc/wiki/Proposals/C.UTF-8 */
char *lc_ctype;
lc_ctype = setlocale(LC_CTYPE, "C.UTF-8");
if (lc_ctype == NULL)
{
/* use en_US.UTF-8 instead if not available */
setlocale(LC_CTYPE, "en_US.UTF-8");
}
g_mk_temp_dir(app_name);
}
/*****************************************************************************/
void
g_deinit(void)
{
#if defined(_WIN32)
WSACleanup();
#endif
g_rm_temp_dir();
}
/*****************************************************************************/
/* allocate memory, returns a pointer to it, size bytes are allocated,
if zero is non zero, each byte will be set to zero */
void *
g_malloc(int size, int zero)
{
char *rv;
rv = (char *)malloc(size);
if (zero)
{
if (rv != 0)
{
memset(rv, 0, size);
}
}
return rv;
}
/*****************************************************************************/
/* free the memory pointed to by ptr, ptr can be zero */
void
g_free(void *ptr)
{
if (ptr != 0)
{
free(ptr);
}
}
/*****************************************************************************/
/* output text to stdout, try to use g_write / g_writeln instead to avoid
linux / windows EOL problems */
void
g_printf(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vfprintf(stdout, format, ap);
va_end(ap);
}
/*****************************************************************************/
void
g_sprintf(char *dest, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsprintf(dest, format, ap);
va_end(ap);
}
/*****************************************************************************/
int
g_snprintf(char *dest, int len, const char *format, ...)
{
int err;
va_list ap;
va_start(ap, format);
err = vsnprintf(dest, len, format, ap);
va_end(ap);
return err;
}
/*****************************************************************************/
void
g_writeln(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vfprintf(stdout, format, ap);
va_end(ap);
#if defined(_WIN32)
g_printf("\r\n");
#else
g_printf("\n");
#endif
}
/*****************************************************************************/
void
g_write(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vfprintf(stdout, format, ap);
va_end(ap);
}
/*****************************************************************************/
/* produce a hex dump */
void
g_hexdump(const 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_writeln("%s", "");
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();
}
/*****************************************************************************/
/*Returns 0 on success*/
int
g_tcp_set_no_delay(int sck)
{
int ret = 1; /* error */
int option_value;
socklen_t option_len;
option_len = sizeof(option_value);
/* SOL_TCP IPPROTO_TCP */
if (getsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (char *)&option_value,
&option_len) == 0)
{
if (option_value == 0)
{
option_value = 1;
option_len = sizeof(option_value);
if (setsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (char *)&option_value,
option_len) == 0)
{
ret = 0; /* success */
}
else
{
g_writeln("Error setting tcp_nodelay");
}
}
}
else
{
g_writeln("Error getting tcp_nodelay");
}
return ret;
}
/*****************************************************************************/
/*Returns 0 on success*/
int
g_tcp_set_keepalive(int sck)
{
int ret = 1; /* error */
int option_value;
socklen_t option_len;
option_len = sizeof(option_value);
/* SOL_TCP IPPROTO_TCP */
if (getsockopt(sck, SOL_SOCKET, SO_KEEPALIVE, (char *)&option_value,
&option_len) == 0)
{
if (option_value == 0)
{
option_value = 1;
option_len = sizeof(option_value);
if (setsockopt(sck, SOL_SOCKET, SO_KEEPALIVE, (char *)&option_value,
option_len) == 0)
{
ret = 0; /* success */
}
else
{
g_writeln("Error setting tcp_keepalive");
}
}
}
else
{
g_writeln("Error getting tcp_keepalive");
}
return ret;
}
/*****************************************************************************/
/* returns a newly created socket or -1 on error */
/* in win32 a socket is an unsigned int, in linux, it's an int */
int
g_tcp_socket(void)
{
int rv;
int option_value;
socklen_t option_len;
#if defined(XRDP_ENABLE_IPV6)
rv = (int)socket(AF_INET6, SOCK_STREAM, 0);
if (rv < 0)
{
switch (errno)
{
case EAFNOSUPPORT: /* if IPv6 not supported, retry IPv4 */
log_message(LOG_LEVEL_INFO, "IPv6 not supported, falling back to IPv4");
rv = (int)socket(AF_INET, SOCK_STREAM, 0);
break;
default:
log_message(LOG_LEVEL_ERROR, "g_tcp_socket: %s", g_get_strerror());
return -1;
}
}
#else
rv = (int)socket(AF_INET, SOCK_STREAM, 0);
#endif
if (rv < 0)
{
log_message(LOG_LEVEL_ERROR, "g_tcp_socket: %s", g_get_strerror());
return -1;
}
#if defined(XRDP_ENABLE_IPV6)
option_len = sizeof(option_value);
if (getsockopt(rv, IPPROTO_IPV6, IPV6_V6ONLY, (char*)&option_value,
&option_len) == 0)
{
if (option_value != 0)
{
#if defined(XRDP_ENABLE_IPV6ONLY)
option_value = 1;
#else
option_value = 0;
#endif
option_len = sizeof(option_value);
if (setsockopt(rv, IPPROTO_IPV6, IPV6_V6ONLY, (char*)&option_value,
option_len) < 0)
{
log_message(LOG_LEVEL_ERROR, "g_tcp_socket: setsockopt() failed");
}
}
}
#endif
option_len = sizeof(option_value);
if (getsockopt(rv, SOL_SOCKET, SO_REUSEADDR, (char *)&option_value,
&option_len) == 0)
{
if (option_value == 0)
{
option_value = 1;
option_len = sizeof(option_value);
if (setsockopt(rv, SOL_SOCKET, SO_REUSEADDR, (char *)&option_value,
option_len) < 0)
{
log_message(LOG_LEVEL_ERROR, "g_tcp_socket: setsockopt() failed");
}
}
}
option_len = sizeof(option_value);
if (getsockopt(rv, SOL_SOCKET, SO_SNDBUF, (char *)&option_value,
&option_len) == 0)
{
if (option_value < (1024 * 32))
{
option_value = 1024 * 32;
option_len = sizeof(option_value);
if (setsockopt(rv, SOL_SOCKET, SO_SNDBUF, (char *)&option_value,
option_len) < 0)
{
log_message(LOG_LEVEL_ERROR, "g_tcp_socket: setsockopt() failed");
}
}
}
return rv;
}
/*****************************************************************************/
/* returns error */
int
g_sck_set_send_buffer_bytes(int sck, int bytes)
{
int option_value;
socklen_t option_len;
option_value = bytes;
option_len = sizeof(option_value);
if (setsockopt(sck, SOL_SOCKET, SO_SNDBUF, (char *)&option_value,
option_len) != 0)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns error */
int
g_sck_get_send_buffer_bytes(int sck, int *bytes)
{
int option_value;
socklen_t option_len;
option_value = 0;
option_len = sizeof(option_value);
if (getsockopt(sck, SOL_SOCKET, SO_SNDBUF, (char *)&option_value,
&option_len) != 0)
{
return 1;
}
*bytes = option_value;
return 0;
}
/*****************************************************************************/
/* returns error */
int
g_sck_set_recv_buffer_bytes(int sck, int bytes)
{
int option_value;
socklen_t option_len;
option_value = bytes;
option_len = sizeof(option_value);
if (setsockopt(sck, SOL_SOCKET, SO_RCVBUF, (char *)&option_value,
option_len) != 0)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns error */
int
g_sck_get_recv_buffer_bytes(int sck, int *bytes)
{
int option_value;
socklen_t option_len;
option_value = 0;
option_len = sizeof(option_value);
if (getsockopt(sck, SOL_SOCKET, SO_RCVBUF, (char *)&option_value,
&option_len) != 0)
{
return 1;
}
*bytes = option_value;
return 0;
}
/*****************************************************************************/
int
g_sck_local_socket(void)
{
#if defined(_WIN32)
return 0;
#else
return socket(PF_LOCAL, SOCK_STREAM, 0);
#endif
}
/*****************************************************************************/
/* returns error */
int
g_sck_get_peer_cred(int sck, int *pid, int *uid, int *gid)
{
#if defined(SO_PEERCRED)
socklen_t ucred_length;
struct myucred
{
pid_t pid;
uid_t uid;
gid_t gid;
} credentials;
ucred_length = sizeof(credentials);
if (getsockopt(sck, SOL_SOCKET, SO_PEERCRED, &credentials, &ucred_length))
{
return 1;
}
if (pid != 0)
{
*pid = credentials.pid;
}
if (uid != 0)
{
*uid = credentials.uid;
}
if (gid != 0)
{
*gid = credentials.gid;
}
return 0;
#elif defined(LOCAL_PEERCRED)
/* FreeBSD, OS X reach here*/
struct xucred xucred;
unsigned int xucred_length;
xucred_length = sizeof(xucred);
if (getsockopt(sck, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_length))
{
return 1;
}
if (pid !=0)
{
*pid = 0; /* can't get pid in FreeBSD, OS X */
}
if (uid != 0)
{
*uid = xucred.cr_uid;
}
if (gid != 0) {
*gid = xucred.cr_gid;
}
return 0;
#else
return 1;
#endif
}
/*****************************************************************************/
void
g_sck_close(int sck)
{
#if defined(_WIN32)
closesocket(sck);
#else
char sockname[128];
union
{
struct sockaddr sock_addr;
struct sockaddr_in sock_addr_in;
#if defined(XRDP_ENABLE_IPV6)
struct sockaddr_in6 sock_addr_in6;
#endif
} sock_info;
socklen_t sock_len = sizeof(sock_info);
memset(&sock_info, 0, sizeof(sock_info));
if (getsockname(sck, &sock_info.sock_addr, &sock_len) == 0)
{
switch (sock_info.sock_addr.sa_family)
{
case AF_INET:
{
struct sockaddr_in *sock_addr_in = &sock_info.sock_addr_in;
g_snprintf(sockname, sizeof(sockname), "AF_INET %s:%d",
inet_ntoa(sock_addr_in->sin_addr),
ntohs(sock_addr_in->sin_port));
break;
}
#if defined(XRDP_ENABLE_IPV6)
case AF_INET6:
{
char addr[48];
struct sockaddr_in6 *sock_addr_in6 = &sock_info.sock_addr_in6;
g_snprintf(sockname, sizeof(sockname), "AF_INET6 %s port %d",
inet_ntop(sock_addr_in6->sin6_family,
&sock_addr_in6->sin6_addr, addr, sizeof(addr)),
ntohs(sock_addr_in6->sin6_port));
break;
}
#endif
case AF_UNIX:
g_snprintf(sockname, sizeof(sockname), "AF_UNIX");
break;
default:
g_snprintf(sockname, sizeof(sockname), "unknown family %d",
sock_info.sock_addr.sa_family);
break;
}
}
else
{
log_message(LOG_LEVEL_WARNING, "getsockname() failed on socket %d: %s",
sck, g_get_strerror());
if (errno == EBADF || errno == ENOTSOCK)
{
return;
}
g_snprintf(sockname, sizeof(sockname), "unknown");
}
if (close(sck) == 0)
{
log_message(LOG_LEVEL_DEBUG, "Closed socket %d (%s)", sck, sockname);
}
else
{
log_message(LOG_LEVEL_WARNING, "Cannot close socket %d (%s): %s", sck,
sockname, g_get_strerror());
}
#endif
}
#if defined(XRDP_ENABLE_IPV6)
/*****************************************************************************/
/* Helper function for g_tcp_connect. */
static int
connect_loopback(int sck, const char *port)
{
struct sockaddr_in6 sa;
struct sockaddr_in s;
int res;
// First IPv6
g_memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET6;
sa.sin6_addr = in6addr_loopback; // IPv6 ::1
sa.sin6_port = htons((tui16)atoi(port));
res = connect(sck, (struct sockaddr*)&sa, sizeof(sa));
if (res == -1 && errno == EINPROGRESS)
{
return -1;
}
if (res == 0 || (res == -1 && errno == EISCONN))
{
return 0;
}
// else IPv4
g_memset(&sa, 0, sizeof(s));
s.sin_family = AF_INET;
s.sin_addr.s_addr = htonl(INADDR_LOOPBACK); // IPv4 127.0.0.1
s.sin_port = htons((tui16)atoi(port));
res = connect(sck, (struct sockaddr*)&s, sizeof(s));
if (res == -1 && errno == EINPROGRESS)
{
return -1;
}
if (res == 0 || (res == -1 && errno == EISCONN))
{
return 0;
}
// else IPv6 with IPv4 address
g_memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET6;
inet_pton(AF_INET6, "::FFFF:127.0.0.1", &sa.sin6_addr);
sa.sin6_port = htons((tui16)atoi(port));
res = connect(sck, (struct sockaddr*)&sa, sizeof(sa));
if (res == -1 && errno == EINPROGRESS)
{
return -1;
}
if (res == 0 || (res == -1 && errno == EISCONN))
{
return 0;
}
return -1;
}
#endif
/*****************************************************************************/
/* returns error, zero is good */
/* The connection might get to be in progress, if so -1 is returned. */
/* The caller needs to call again to check if succeed. */
#if defined(XRDP_ENABLE_IPV6)
int
g_tcp_connect(int sck, const char *address, const char *port)
{
int res = 0;
struct addrinfo p;
struct addrinfo *h = (struct addrinfo *)NULL;
struct addrinfo *rp = (struct addrinfo *)NULL;
g_memset(&p, 0, sizeof(struct addrinfo));
p.ai_socktype = SOCK_STREAM;
p.ai_protocol = IPPROTO_TCP;
p.ai_flags = AI_ADDRCONFIG | AI_V4MAPPED;
p.ai_family = AF_INET6;
if (g_strcmp(address, "127.0.0.1") == 0)
{
return connect_loopback(sck, port);
}
else
{
res = getaddrinfo(address, port, &p, &h);
}
if (res != 0)
{
log_message(LOG_LEVEL_ERROR, "g_tcp_connect(%d, %s, %s): getaddrinfo() failed: %s",
sck, address, port, gai_strerror(res));
}
if (res > -1)
{
if (h != NULL)
{
for (rp = h; rp != NULL; rp = rp->ai_next)
{
res = connect(sck, (struct sockaddr *)(rp->ai_addr),
rp->ai_addrlen);
if (res == -1 && errno == EINPROGRESS)
{
break; /* Return -1 */
}
if (res == 0 || (res == -1 && errno == EISCONN))
{
res = 0;
break; /* Success */
}
}
freeaddrinfo(h);
}
}
return res;
}
#else
int
g_tcp_connect(int sck, const char* address, const char* port)
{
struct sockaddr_in s;
struct hostent* h;
int res;
g_memset(&s, 0, sizeof(struct sockaddr_in));
s.sin_family = AF_INET;
s.sin_port = htons((tui16)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)));
}
}
}
}
}
res = connect(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
/* Mac OSX connect() returns -1 for already established connections */
if (res == -1 && errno == EISCONN)
{
res = 0;
}
return res;
}
#endif
/*****************************************************************************/
/* returns error, zero is good */
int
g_sck_local_connect(int sck, const char *port)
{
#if defined(_WIN32)
return -1;
#else
struct sockaddr_un s;
memset(&s, 0, sizeof(struct sockaddr_un));
s.sun_family = AF_UNIX;
strncpy(s.sun_path, port, sizeof(s.sun_path));
s.sun_path[sizeof(s.sun_path) - 1] = 0;
return connect(sck, (struct sockaddr *)&s, sizeof(struct sockaddr_un));
#endif
}
/*****************************************************************************/
int
g_sck_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;
if (fcntl(sck, F_SETFL, i) < 0)
{
log_message(LOG_LEVEL_ERROR, "g_sck_set_non_blocking: fcntl() failed");
}
#endif
return 0;
}
#if defined(XRDP_ENABLE_IPV6)
/*****************************************************************************/
/* returns error, zero is good */
int
g_tcp_bind(int sck, const char *port)
{
struct sockaddr_in6 sa;
struct sockaddr_in s;
int errno6;
// First IPv6
g_memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET6;
sa.sin6_addr = in6addr_any; // IPv6 ::
sa.sin6_port = htons((tui16)atoi(port));
if (bind(sck, (struct sockaddr*)&sa, sizeof(sa)) == 0)
{
return 0;
}
errno6 = errno;
// else IPv4
g_memset(&sa, 0, sizeof(s));
s.sin_family = AF_INET;
s.sin_addr.s_addr = htonl(INADDR_ANY); // IPv4 0.0.0.0
s.sin_port = htons((tui16)atoi(port));
if (bind(sck, (struct sockaddr*)&s, sizeof(s)) == 0)
{
return 0;
}
log_message(LOG_LEVEL_ERROR, "g_tcp_bind(%d, %s) failed "
"bind IPv6 (errno=%d) and IPv4 (errno=%d).",
sck, port, errno6, errno);
return -1;
}
#else
int
g_tcp_bind(int sck, const char* port)
{
struct sockaddr_in s;
memset(&s, 0, sizeof(struct sockaddr_in));
s.sin_family = AF_INET;
s.sin_port = htons((tui16)atoi(port));
s.sin_addr.s_addr = INADDR_ANY;
return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
}
#endif
/*****************************************************************************/
int
g_sck_local_bind(int sck, const char *port)
{
#if defined(_WIN32)
return -1;
#else
struct sockaddr_un s;
memset(&s, 0, sizeof(struct sockaddr_un));
s.sun_family = AF_UNIX;
strncpy(s.sun_path, port, sizeof(s.sun_path));
s.sun_path[sizeof(s.sun_path) - 1] = 0;
return bind(sck, (struct sockaddr *)&s, sizeof(struct sockaddr_un));
#endif
}
#if defined(XRDP_ENABLE_IPV6)
/*****************************************************************************/
/* Helper function for g_tcp_bind_address. */
static int
bind_loopback(int sck, const char *port)
{
struct sockaddr_in6 sa;
struct sockaddr_in s;
int errno6;
int errno4;
// First IPv6
g_memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET6;
sa.sin6_addr = in6addr_loopback; // IPv6 ::1
sa.sin6_port = htons((tui16)atoi(port));
if (bind(sck, (struct sockaddr*)&sa, sizeof(sa)) == 0)
{
return 0;
}
errno6 = errno;
// else IPv4
g_memset(&sa, 0, sizeof(s));
s.sin_family = AF_INET;
s.sin_addr.s_addr = htonl(INADDR_LOOPBACK); // IPv4 127.0.0.1
s.sin_port = htons((tui16)atoi(port));
if (bind(sck, (struct sockaddr*)&s, sizeof(s)) == 0)
{
return 0;
}
errno4 = errno;
// else IPv6 with IPv4 address
g_memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET6;
inet_pton(AF_INET6, "::FFFF:127.0.0.1", &sa.sin6_addr);
sa.sin6_port = htons((tui16)atoi(port));
if (bind(sck, (struct sockaddr*)&sa, sizeof(sa)) == 0)
{
return 0;
}
log_message(LOG_LEVEL_ERROR, "bind_loopback(%d, %s) failed; "
"IPv6 ::1 (errno=%d), IPv4 127.0.0.1 (errno=%d) and IPv6 ::FFFF:127.0.0.1 (errno=%d).",
sck, port, errno6, errno4, errno);
return -1;
}
/*****************************************************************************/
/* Helper function for g_tcp_bind_address. */
/* Returns error, zero is good. */
static int
getaddrinfo_bind(int sck, const char *port, const char *address)
{
int res;
int error;
struct addrinfo hints;
struct addrinfo *list;
struct addrinfo *i;
res = -1;
g_memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_flags = 0;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
error = getaddrinfo(address, port, &hints, &list);
if (error == 0)
{
i = list;
while ((i != 0) && (res < 0))
{
res = bind(sck, i->ai_addr, i->ai_addrlen);
i = i->ai_next;
}
freeaddrinfo(list);
}
else
{
log_message(LOG_LEVEL_ERROR, "getaddrinfo error: %s", gai_strerror(error));
return -1;
}
return res;
}
/*****************************************************************************/
/* Binds a socket to a port. If no specified address the port will be bind */
/* to 'any', i.e. available on all network. */
/* For bind to local host, see valid address strings below. */
/* Returns error, zero is good. */
int
g_tcp_bind_address(int sck, const char *port, const char *address)
{
int res;
if ((address == 0) ||
(address[0] == 0) ||
(g_strcmp(address, "0.0.0.0") == 0) ||
(g_strcmp(address, "::") == 0))
{
return g_tcp_bind(sck, port);
}
if ((g_strcmp(address, "127.0.0.1") == 0) ||
(g_strcmp(address, "::1") == 0) ||
(g_strcmp(address, "localhost") == 0))
{
return bind_loopback(sck, port);
}
// Let getaddrinfo translate the address string...
// IPv4: ddd.ddd.ddd.ddd
// IPv6: x:x:x:x:x:x:x:x%<interface>, or x::x:x:x:x%<interface>
res = getaddrinfo_bind(sck, port, address);
if (res != 0)
{
// If fail and it is an IPv4 address, try with the mapped address
struct in_addr a;
if ((inet_aton(address, &a) == 1) && (strlen(address) <= 15))
{
char sz[7+15+1];
sprintf(sz, "::FFFF:%s", address);
res = getaddrinfo_bind(sck, port, sz);
if (res == 0)
{
return 0;
}
}
log_message(LOG_LEVEL_ERROR, "g_tcp_bind_address(%d, %s, %s) Failed!",
sck, port, address);
return -1;
}
return 0;
}
#else
int
g_tcp_bind_address(int sck, const char* port, const char* address)
{
struct sockaddr_in s;
memset(&s, 0, sizeof(struct sockaddr_in));
s.sin_family = AF_INET;
s.sin_port = htons((tui16)atoi(port));
s.sin_addr.s_addr = INADDR_ANY;
if (inet_aton(address, &s.sin_addr) < 0)
{
return -1; /* bad address */
}
return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
}
#endif
/*****************************************************************************/
/* returns error, zero is good */
int
g_sck_listen(int sck)
{
return listen(sck, 2);
}
/*****************************************************************************/
int
g_tcp_accept(int sck)
{
int ret;
char msg[256];
union
{
struct sockaddr sock_addr;
struct sockaddr_in sock_addr_in;
#if defined(XRDP_ENABLE_IPV6)
struct sockaddr_in6 sock_addr_in6;
#endif
} sock_info;
socklen_t sock_len = sizeof(sock_info);
memset(&sock_info, 0, sock_len);
ret = accept(sck, (struct sockaddr *)&sock_info, &sock_len);
if (ret > 0)
{
switch(sock_info.sock_addr.sa_family)
{
case AF_INET:
{
struct sockaddr_in *sock_addr_in = &sock_info.sock_addr_in;
snprintf(msg, sizeof(msg), "A connection received from %s port %d",
inet_ntoa(sock_addr_in->sin_addr),
ntohs(sock_addr_in->sin_port));
log_message(LOG_LEVEL_INFO, "%s", msg);
break;
}
#if defined(XRDP_ENABLE_IPV6)
case AF_INET6:
{
struct sockaddr_in6 *sock_addr_in6 = &sock_info.sock_addr_in6;
char addr[256];
inet_ntop(sock_addr_in6->sin6_family,
&sock_addr_in6->sin6_addr, addr, sizeof(addr));
snprintf(msg, sizeof(msg), "A connection received from %s port %d",
addr, ntohs(sock_addr_in6->sin6_port));
log_message(LOG_LEVEL_INFO, "%s", msg);
break;
}
#endif
}
}
return ret;
}
/*****************************************************************************/
int
g_sck_accept(int sck, char *addr, int addr_bytes, char *port, int port_bytes)
{
int ret;
char msg[256];
union
{
struct sockaddr sock_addr;
struct sockaddr_in sock_addr_in;
#if defined(XRDP_ENABLE_IPV6)
struct sockaddr_in6 sock_addr_in6;
#endif
struct sockaddr_un sock_addr_un;
} sock_info;
socklen_t sock_len = sizeof(sock_info);
memset(&sock_info, 0, sock_len);
ret = accept(sck, (struct sockaddr *)&sock_info, &sock_len);
if (ret > 0)
{
switch(sock_info.sock_addr.sa_family)
{
case AF_INET:
{
struct sockaddr_in *sock_addr_in = &sock_info.sock_addr_in;
g_snprintf(addr, addr_bytes, "%s", inet_ntoa(sock_addr_in->sin_addr));
g_snprintf(port, port_bytes, "%d", ntohs(sock_addr_in->sin_port));
g_snprintf(msg, sizeof(msg),
"AF_INET connection received from %s port %s",
addr, port);
break;
}
#if defined(XRDP_ENABLE_IPV6)
case AF_INET6:
{
struct sockaddr_in6 *sock_addr_in6 = &sock_info.sock_addr_in6;
inet_ntop(sock_addr_in6->sin6_family,
&sock_addr_in6->sin6_addr, addr, addr_bytes);
g_snprintf(port, port_bytes, "%d", ntohs(sock_addr_in6->sin6_port));
g_snprintf(msg, sizeof(msg),
"AF_INET6 connection received from %s port %s",
addr, port);
break;
}
#endif
case AF_UNIX:
{
g_strncpy(addr, "", addr_bytes - 1);
g_strncpy(port, "", port_bytes - 1);
g_snprintf(msg, sizeof(msg), "AF_UNIX connection received");
break;
}
default:
{
g_strncpy(addr, "", addr_bytes - 1);
g_strncpy(port, "", port_bytes - 1);
g_snprintf(msg, sizeof(msg),
"connection received, unknown socket family %d",
sock_info.sock_addr.sa_family);
break;
}
}
log_message(LOG_LEVEL_INFO, "Socket %d: %s", ret, msg);
}
return ret;
}
/*****************************************************************************/
void
g_write_ip_address(int rcv_sck, char *ip_address, int bytes)
{
struct sockaddr_in s;
struct in_addr in;
socklen_t len;
int ip_port;
int ok;
ok = 0;
memset(&s, 0, sizeof(s));
len = sizeof(s);
if (getpeername(rcv_sck, (struct sockaddr *)&s, &len) == 0)
{
memset(&in, 0, sizeof(in));
in.s_addr = s.sin_addr.s_addr;
ip_port = ntohs(s.sin_port);
if (ip_port != 0)
{
ok = 1;
snprintf(ip_address, bytes, "%s:%d - socket: %d", inet_ntoa(in),
ip_port, rcv_sck);
}
}
if (!ok)
{
snprintf(ip_address, bytes, "NULL:NULL - socket: %d", rcv_sck);
}
}
/*****************************************************************************/
void
g_sleep(int msecs)
{
#if defined(_WIN32)
Sleep(msecs);
#else
usleep(msecs * 1000);
#endif
}
/*****************************************************************************/
int
g_sck_last_error_would_block(int sck)
{
#if defined(_WIN32)
return WSAGetLastError() == WSAEWOULDBLOCK;
#else
return (errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINPROGRESS);
#endif
}
/*****************************************************************************/
int
g_sck_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_sck_send(int sck, const void *ptr, int len, int flags)
{
#if defined(_WIN32)
return send(sck, (const char *)ptr, len, flags);
#else
return send(sck, ptr, len, flags);
#endif
}
/*****************************************************************************/
/* returns boolean */
int
g_sck_socket_ok(int sck)
{
int opt;
socklen_t opt_len;
opt_len = sizeof(opt);
if (getsockopt(sck, SOL_SOCKET, SO_ERROR, (char *)(&opt), &opt_len) == 0)
{
if (opt == 0)
{
return 1;
}
}
return 0;
}
/*****************************************************************************/
/* wait 'millis' milliseconds for the socket to be able to write */
/* returns boolean */
int
g_sck_can_send(int sck, int millis)
{
fd_set wfds;
struct timeval time;
int rv;
time.tv_sec = millis / 1000;
time.tv_usec = (millis * 1000) % 1000000;
FD_ZERO(&wfds);
if (sck > 0)
{
FD_SET(((unsigned int)sck), &wfds);
rv = select(sck + 1, 0, &wfds, 0, &time);
if (rv > 0)
{
return 1;
}
}
return 0;
}
/*****************************************************************************/
/* wait 'millis' milliseconds for the socket to be able to receive */
/* returns boolean */
int
g_sck_can_recv(int sck, int millis)
{
fd_set rfds;
struct timeval time;
int rv;
g_memset(&time, 0, sizeof(time));
time.tv_sec = millis / 1000;
time.tv_usec = (millis * 1000) % 1000000;
FD_ZERO(&rfds);
if (sck > 0)
{
FD_SET(((unsigned int)sck), &rfds);
rv = select(sck + 1, &rfds, 0, 0, &time);
if (rv > 0)
{
return 1;
}
}
return 0;
}
/*****************************************************************************/
int
g_sck_select(int sck1, int sck2)
{
fd_set rfds;
struct timeval time;
int max;
int rv;
g_memset(&time, 0, sizeof(struct timeval));
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;
}
}
else
{
rv = 0;
}
return rv;
}
/*****************************************************************************/
/* returns boolean */
static int
g_fd_can_read(int fd)
{
fd_set rfds;
struct timeval time;
int rv;
g_memset(&time, 0, sizeof(time));
FD_ZERO(&rfds);
FD_SET(((unsigned int)fd), &rfds);
rv = select(fd + 1, &rfds, 0, 0, &time);
if (rv == 1)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns error */
/* O_NONBLOCK = 0x00000800 */
static int
g_set_nonblock(int fd)
{
int error;
int flags;
error = fcntl(fd, F_GETFL);
if (error < 0)
{
return 1;
}
flags = error;
if ((flags & O_NONBLOCK) != O_NONBLOCK)
{
flags |= O_NONBLOCK;
error = fcntl(fd, F_SETFL, flags);
if (error < 0)
{
return 1;
}
}
return 0;
}
/*****************************************************************************/
/* returns 0 on error */
tintptr
g_create_wait_obj(const char *name)
{
#ifdef _WIN32
tintptr obj;
obj = (tintptr)CreateEvent(0, 1, 0, name);
return obj;
#else
int fds[2];
int error;
error = pipe(fds);
if (error != 0)
{
return 0;
}
if (g_set_nonblock(fds[0]) != 0)
{
close(fds[0]);
close(fds[1]);
return 0;
}
if (g_set_nonblock(fds[1]) != 0)
{
close(fds[0]);
close(fds[1]);
return 0;
}
return (fds[1] << 16) | fds[0];
#endif
}
/*****************************************************************************/
/* returns 0 on error */
tintptr
g_create_wait_obj_from_socket(tintptr socket, int write)
{
#ifdef _WIN32
/* Create and return corresponding event handle for WaitForMultipleObjects */
WSAEVENT event;
long lnetevent = 0;
g_memset(&event, 0, sizeof(WSAEVENT));
event = WSACreateEvent();
lnetevent = (write ? FD_WRITE : FD_READ) | FD_CLOSE;
if (WSAEventSelect(socket, event, lnetevent) == 0)
{
return (tbus)event;
}
else
{
return 0;
}
#else
return socket;
#endif
}
/*****************************************************************************/
void
g_delete_wait_obj_from_socket(tintptr wait_obj)
{
#ifdef _WIN32
if (wait_obj == 0)
{
return;
}
WSACloseEvent((HANDLE)wait_obj);
#else
#endif
}
/*****************************************************************************/
/* returns error */
int
g_set_wait_obj(tintptr obj)
{
#ifdef _WIN32
if (obj == 0)
{
return 0;
}
SetEvent((HANDLE)obj);
return 0;
#else
int error;
int fd;
int written;
int to_write;
char buf[4] = "sig";
if (obj == 0)
{
return 0;
}
fd = obj & 0xffff;
if (g_fd_can_read(fd))
{
/* already signalled */
return 0;
}
fd = obj >> 16;
to_write = 4;
written = 0;
while (written < to_write)
{
error = write(fd, buf + written, to_write - written);
if (error == -1)
{
error = errno;
if ((error == EAGAIN) || (error == EWOULDBLOCK) ||
(error == EINPROGRESS) || (error == EINTR))
{
/* ok */
}
else
{
return 1;
}
}
else if (error > 0)
{
written += error;
}
else
{
return 1;
}
}
return 0;
#endif
}
/*****************************************************************************/
/* returns error */
int
g_reset_wait_obj(tintptr obj)
{
#ifdef _WIN32
if (obj == 0)
{
return 0;
}
ResetEvent((HANDLE)obj);
return 0;
#else
char buf[4];
int error;
int fd;
if (obj == 0)
{
return 0;
}
fd = obj & 0xffff;
while (g_fd_can_read(fd))
{
error = read(fd, buf, 4);
if (error == -1)
{
error = errno;
if ((error == EAGAIN) || (error == EWOULDBLOCK) ||
(error == EINPROGRESS) || (error == EINTR))
{
/* ok */
}
else
{
return 1;
}
}
else if (error == 0)
{
return 1;
}
}
return 0;
#endif
}
/*****************************************************************************/
/* returns boolean */
int
g_is_wait_obj_set(tintptr obj)
{
#ifdef _WIN32
if (obj == 0)
{
return 0;
}
if (WaitForSingleObject((HANDLE)obj, 0) == WAIT_OBJECT_0)
{
return 1;
}
return 0;
#else
if (obj == 0)
{
return 0;
}
return g_fd_can_read(obj & 0xffff);
#endif
}
/*****************************************************************************/
/* returns error */
int
g_delete_wait_obj(tintptr obj)
{
#ifdef _WIN32
if (obj == 0)
{
return 0;
}
/* Close event handle */
CloseHandle((HANDLE)obj);
return 0;
#else
if (obj == 0)
{
return 0;
}
close(obj & 0xffff);
close(obj >> 16);
return 0;
#endif
}
/*****************************************************************************/
/* returns error */
int
g_obj_wait(tintptr *read_objs, int rcount, tintptr *write_objs, int wcount,
int mstimeout)
{
#ifdef _WIN32
HANDLE handles[256];
DWORD count;
DWORD error;
int j;
int i;
j = 0;
count = rcount + wcount;
for (i = 0; i < rcount; i++)
{
handles[j++] = (HANDLE)(read_objs[i]);
}
for (i = 0; i < wcount; i++)
{
handles[j++] = (HANDLE)(write_objs[i]);
}
if (mstimeout < 1)
{
mstimeout = INFINITE;
}
error = WaitForMultipleObjects(count, handles, FALSE, mstimeout);
if (error == WAIT_FAILED)
{
return 1;
}
return 0;
#else
fd_set rfds;
fd_set wfds;
struct timeval time;
struct timeval *ptime;
int i = 0;
int res = 0;
int max = 0;
int sck = 0;
max = 0;
if (mstimeout < 1)
{
ptime = 0;
}
else
{
g_memset(&time, 0, sizeof(struct timeval));
time.tv_sec = mstimeout / 1000;
time.tv_usec = (mstimeout % 1000) * 1000;
ptime = &time;
}
FD_ZERO(&rfds);
FD_ZERO(&wfds);
/* Find the highest descriptor number in read_obj */
if (read_objs != NULL)
{
for (i = 0; i < rcount; i++)
{
sck = read_objs[i] & 0xffff;
if (sck > 0)
{
FD_SET(sck, &rfds);
if (sck > max)
{
max = sck; /* max holds the highest socket/descriptor number */
}
}
}
}
else if (rcount > 0)
{
g_writeln("Programming error read_objs is null");
return 1; /* error */
}
if (write_objs != NULL)
{
for (i = 0; i < wcount; i++)
{
sck = (int)(write_objs[i]);
if (sck > 0)
{
FD_SET(sck, &wfds);
if (sck > max)
{
max = sck; /* max holds the highest socket/descriptor number */
}
}
}
}
else if (wcount > 0)
{
g_writeln("Programming error write_objs is null");
return 1; /* error */
}
res = select(max + 1, &rfds, &wfds, 0, ptime);
if (res < 0)
{
/* these are not really errors */
if ((errno == EAGAIN) ||
(errno == EWOULDBLOCK) ||
(errno == EINPROGRESS) ||
(errno == EINTR)) /* signal occurred */
{
return 0;
}
return 1; /* error */
}
return 0;
#endif
}
/*****************************************************************************/
void
g_random(char *data, int len)
{
#if defined(_WIN32)
int index;
srand(g_time1());
for (index = 0; index < len; index++)
{
data[index] = (char)rand(); /* rand returns a number between 0 and
RAND_MAX */
}
#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)
{
if (read(fd, data, len) != len)
{
}
close(fd);
}
#endif
}
/*****************************************************************************/
int
g_abs(int i)
{
return abs(i);
}
/*****************************************************************************/
int
g_memcmp(const void *s1, const void *s2, int len)
{
return memcmp(s1, s2, len);
}
/*****************************************************************************/
/* returns -1 on error, else return handle or file descriptor */
int
g_file_open(const char *file_name)
{
#if defined(_WIN32)
return (int)CreateFileA(file_name, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
0, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
#else
int rv;
rv = open(file_name, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
if (rv == -1)
{
/* can't open read / write, try to open read only */
rv = open(file_name, O_RDONLY);
}
return rv;
#endif
}
/*****************************************************************************/
/* returns -1 on error, else return handle or file descriptor */
int
g_file_open_ex(const char *file_name, int aread, int awrite,
int acreate, int atrunc)
{
#if defined(_WIN32)
return -1;
#else
int rv;
int flags;
flags = 0;
if (aread && awrite)
{
flags |= O_RDWR;
}
else if (aread)
{
flags |= O_RDONLY;
}
else if (awrite)
{
flags |= O_WRONLY;
}
if (acreate)
{
flags |= O_CREAT;
}
if (atrunc)
{
flags |= O_TRUNC;
}
rv = open(file_name, flags, S_IRUSR | S_IWUSR);
return rv;
#endif
}
/*****************************************************************************/
/* returns error, always 0 */
int
g_file_close(int fd)
{
#if defined(_WIN32)
CloseHandle((HANDLE)fd);
#else
close(fd);
#endif
return 0;
}
/*****************************************************************************/
/* read from file, returns the number of bytes read or -1 on error */
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, returns the number of bytes written or -1 on error */
int
g_file_write(int fd, const 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, returns offset on success, -1 on failure */
int
g_file_seek(int fd, int offset)
{
#if defined(_WIN32)
int rv;
rv = (int)SetFilePointer((HANDLE)fd, offset, 0, FILE_BEGIN);
if (rv == (int)INVALID_SET_FILE_POINTER)
{
return -1;
}
else
{
return rv;
}
#else
return (int)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
}
/*****************************************************************************/
/* returns error */
int
g_chmod_hex(const char *filename, int flags)
{
#if defined(_WIN32)
return 0;
#else
int fl;
fl = 0;
fl |= (flags & 0x4000) ? S_ISUID : 0;
fl |= (flags & 0x2000) ? S_ISGID : 0;
fl |= (flags & 0x1000) ? S_ISVTX : 0;
fl |= (flags & 0x0400) ? S_IRUSR : 0;
fl |= (flags & 0x0200) ? S_IWUSR : 0;
fl |= (flags & 0x0100) ? S_IXUSR : 0;
fl |= (flags & 0x0040) ? S_IRGRP : 0;
fl |= (flags & 0x0020) ? S_IWGRP : 0;
fl |= (flags & 0x0010) ? S_IXGRP : 0;
fl |= (flags & 0x0004) ? S_IROTH : 0;
fl |= (flags & 0x0002) ? S_IWOTH : 0;
fl |= (flags & 0x0001) ? S_IXOTH : 0;
return chmod(filename, fl);
#endif
}
/*****************************************************************************/
/* returns error, zero is ok */
int
g_chown(const char *name, int uid, int gid)
{
return chown(name, uid, gid);
}
/*****************************************************************************/
/* returns error, always zero */
int
g_mkdir(const char *dirname)
{
#if defined(_WIN32)
return 0;
#else
return mkdir(dirname, S_IRWXU);
#endif
}
/*****************************************************************************/
/* gets the current working directory and puts up to maxlen chars in
dirname
always returns 0 */
char *
g_get_current_dir(char *dirname, int maxlen)
{
#if defined(_WIN32)
GetCurrentDirectoryA(maxlen, dirname);
return 0;
#else
if (getcwd(dirname, maxlen) == 0)
{
}
return 0;
#endif
}
/*****************************************************************************/
/* returns error, zero on success and -1 on failure */
int
g_set_current_dir(const char *dirname)
{
#if defined(_WIN32)
if (SetCurrentDirectoryA(dirname))
{
return 0;
}
else
{
return -1;
}
#else
return chdir(dirname);
#endif
}
/*****************************************************************************/
/* returns boolean, non zero if the file exists */
int
g_file_exist(const char *filename)
{
#if defined(_WIN32)
return 0; // use FileAge(filename) <> -1
#else
return access(filename, F_OK) == 0;
#endif
}
/*****************************************************************************/
/* returns boolean, non zero if the file is readable */
int
g_file_readable(const char *filename)
{
#if defined(_WIN32)
return _waccess(filename, 04) == 0;
#else
return access(filename, R_OK) == 0;
#endif
}
/*****************************************************************************/
/* returns boolean, non zero if the directory exists */
int
g_directory_exist(const char *dirname)
{
#if defined(_WIN32)
return 0; // use GetFileAttributes and check return value
// is not -1 and FILE_ATTRIBUTE_DIRECTORY bit is set
#else
struct stat st;
if (stat(dirname, &st) == 0)
{
return S_ISDIR(st.st_mode);
}
else
{
return 0;
}
#endif
}
/*****************************************************************************/
/* returns boolean */
int
g_create_dir(const char *dirname)
{
#if defined(_WIN32)
return CreateDirectoryA(dirname, 0); // test this
#else
return mkdir(dirname, (mode_t) - 1) == 0;
#endif
}
/*****************************************************************************/
/* will try to create directories up to last / in name
example /tmp/a/b/c/readme.txt will try to create /tmp/a/b/c
returns boolean */
int
g_create_path(const char *path)
{
char *pp;
char *sp;
char *copypath;
int status;
status = 1;
copypath = g_strdup(path);
pp = copypath;
sp = strchr(pp, '/');
while (sp != 0)
{
if (sp != pp)
{
*sp = 0;
if (!g_directory_exist(copypath))
{
if (!g_create_dir(copypath))
{
status = 0;
break;
}
}
*sp = '/';
}
pp = sp + 1;
sp = strchr(pp, '/');
}
g_free(copypath);
return status;
}
/*****************************************************************************/
/* returns boolean */
int
g_remove_dir(const char *dirname)
{
#if defined(_WIN32)
return RemoveDirectoryA(dirname); // test this
#else
return rmdir(dirname) == 0;
#endif
}
/*****************************************************************************/
/* returns non zero if the file was deleted */
int
g_file_delete(const char *filename)
{
#if defined(_WIN32)
return DeleteFileA(filename);
#else
return unlink(filename) != -1;
#endif
}
/*****************************************************************************/
/* returns file size, -1 on error */
int
g_file_get_size(const char *filename)
{
#if defined(_WIN32)
return -1;
#else
struct stat st;
if (stat(filename, &st) == 0)
{
return (int)(st.st_size);
}
else
{
return -1;
}
#endif
}
/*****************************************************************************/
/* returns length of text */
int
g_strlen(const char *text)
{
if (text == NULL)
{
return 0;
}
return strlen(text);
}
/*****************************************************************************/
/* locates char in text */
const char *
g_strchr(const char* text, int c)
{
if (text == NULL)
{
return 0;
}
return strchr(text,c);
}
/*****************************************************************************/
/* returns dest */
char *
g_strcpy(char *dest, const char *src)
{
if (src == 0 && dest != 0)
{
dest[0] = 0;
return dest;
}
if (dest == 0 || src == 0)
{
return 0;
}
return strcpy(dest, src);
}
/*****************************************************************************/
/* returns dest */
char *
g_strncpy(char *dest, const 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;
}
/*****************************************************************************/
/* returns dest */
char *
g_strcat(char *dest, const char *src)
{
if (dest == 0 || src == 0)
{
return dest;
}
return strcat(dest, src);
}
/*****************************************************************************/
/* if in = 0, return 0 else return newly alloced copy of in */
char *
g_strdup(const char *in)
{
int len;
char *p;
if (in == 0)
{
return 0;
}
len = g_strlen(in);
p = (char *)g_malloc(len + 1, 0);
if (p != NULL)
{
g_strcpy(p, in);
}
return p;
}
/*****************************************************************************/
/* if in = 0, return 0 else return newly alloced copy of input string
* if the input string is larger than maxlen the returned string will be
* truncated. All strings returned will include null termination*/
char *
g_strndup(const char *in, const unsigned int maxlen)
{
unsigned int len;
char *p;
if (in == 0)
{
return 0;
}
len = g_strlen(in);
if (len > maxlen)
{
len = maxlen - 1;
}
p = (char *)g_malloc(len + 2, 0);
if (p != NULL)
{
g_strncpy(p, in, len + 1);
}
return p;
}
/*****************************************************************************/
int
g_strcmp(const char *c1, const char *c2)
{
return strcmp(c1, c2);
}
/*****************************************************************************/
int
g_strncmp(const char *c1, const char *c2, int len)
{
return strncmp(c1, c2, len);
}
/*****************************************************************************/
/* compare up to delim */
int
g_strncmp_d(const char *s1, const char *s2, const char delim, int n)
{
char c1;
char c2;
c1 = 0;
c2 = 0;
while (n > 0)
{
c1 = *(s1++);
c2 = *(s2++);
if ((c1 == 0) || (c1 != c2) || (c1 == delim) || (c2 == delim))
{
return c1 - c2;
}
n--;
}
return c1 - c2;
}
/*****************************************************************************/
int
g_strcasecmp(const char *c1, const char *c2)
{
#if defined(_WIN32)
return stricmp(c1, c2);
#else
return strcasecmp(c1, c2);
#endif
}
/*****************************************************************************/
int
g_strncasecmp(const char *c1, const char *c2, int len)
{
#if defined(_WIN32)
return strnicmp(c1, c2, len);
#else
return strncasecmp(c1, c2, len);
#endif
}
/*****************************************************************************/
int
g_atoi(const char *str)
{
if (str == 0)
{
return 0;
}
return atoi(str);
}
/*****************************************************************************/
int
g_htoi(char *str)
{
int len;
int index;
int rv;
int val;
int shift;
rv = 0;
len = strlen(str);
index = len - 1;
shift = 0;
while (index >= 0)
{
val = 0;
switch (str[index])
{
case '1':
val = 1;
break;
case '2':
val = 2;
break;
case '3':
val = 3;
break;
case '4':
val = 4;
break;
case '5':
val = 5;
break;
case '6':
val = 6;
break;
case '7':
val = 7;
break;
case '8':
val = 8;
break;
case '9':
val = 9;
break;
case 'a':
case 'A':
val = 10;
break;
case 'b':
case 'B':
val = 11;
break;
case 'c':
case 'C':
val = 12;
break;
case 'd':
case 'D':
val = 13;
break;
case 'e':
case 'E':
val = 14;
break;
case 'f':
case 'F':
val = 15;
break;
}
rv = rv | (val << shift);
index--;
shift += 4;
}
return rv;
}
/*****************************************************************************/
/* returns number of bytes copied into out_str */
int
g_bytes_to_hexstr(const void *bytes, int num_bytes, char *out_str,
int bytes_out_str)
{
int rv;
int index;
char *lout_str;
const tui8 *lbytes;
rv = 0;
lbytes = (const tui8 *) bytes;
lout_str = out_str;
for (index = 0; index < num_bytes; index++)
{
if (bytes_out_str < 3)
{
break;
}
g_snprintf(lout_str, bytes_out_str, "%2.2x", lbytes[index]);
lout_str += 2;
bytes_out_str -= 2;
rv += 2;
}
return rv;
}
/*****************************************************************************/
int
g_pos(const char *str, const char *to_find)
{
const char *pp;
pp = strstr(str, to_find);
if (pp == 0)
{
return -1;
}
return (pp - str);
}
/*****************************************************************************/
int
g_mbstowcs(twchar *dest, const char *src, int n)
{
wchar_t *ldest;
int rv;
ldest = (wchar_t *)dest;
rv = mbstowcs(ldest, src, n);
return rv;
}
/*****************************************************************************/
int
g_wcstombs(char *dest, const twchar *src, int n)
{
const wchar_t *lsrc;
int rv;
lsrc = (const wchar_t *)src;
rv = wcstombs(dest, lsrc, n);
return rv;
}
/*****************************************************************************/
/* returns error */
/* trim spaces and tabs, anything <= space */
/* trim_flags 1 trim left, 2 trim right, 3 trim both, 4 trim through */
/* this will always shorten the string or not change it */
int
g_strtrim(char *str, int trim_flags)
{
int index;
int len;
int text1_index;
int got_char;
wchar_t *text;
wchar_t *text1;
len = mbstowcs(0, str, 0);
if (len < 1)
{
return 0;
}
if ((trim_flags < 1) || (trim_flags > 4))
{
return 1;
}
text = (wchar_t *)malloc(len * sizeof(wchar_t) + 8);
text1 = (wchar_t *)malloc(len * sizeof(wchar_t) + 8);
text1_index = 0;
mbstowcs(text, str, len + 1);
switch (trim_flags)
{
case 4: /* trim through */
for (index = 0; index < len; index++)
{
if (text[index] > 32)
{
text1[text1_index] = text[index];
text1_index++;
}
}
text1[text1_index] = 0;
break;
case 3: /* trim both */
got_char = 0;
for (index = 0; index < len; index++)
{
if (got_char)
{
text1[text1_index] = text[index];
text1_index++;
}
else
{
if (text[index] > 32)
{
text1[text1_index] = text[index];
text1_index++;
got_char = 1;
}
}
}
text1[text1_index] = 0;
len = text1_index;
/* trim right */
for (index = len - 1; index >= 0; index--)
{
if (text1[index] > 32)
{
break;
}
}
text1_index = index + 1;
text1[text1_index] = 0;
break;
case 2: /* trim right */
/* copy it */
for (index = 0; index < len; index++)
{
text1[text1_index] = text[index];
text1_index++;
}
/* trim right */
for (index = len - 1; index >= 0; index--)
{
if (text1[index] > 32)
{
break;
}
}
text1_index = index + 1;
text1[text1_index] = 0;
break;
case 1: /* trim left */
got_char = 0;
for (index = 0; index < len; index++)
{
if (got_char)
{
text1[text1_index] = text[index];
text1_index++;
}
else
{
if (text[index] > 32)
{
text1[text1_index] = text[index];
text1_index++;
got_char = 1;
}
}
}
text1[text1_index] = 0;
break;
}
wcstombs(str, text1, text1_index + 1);
free(text);
free(text1);
return 0;
}
/*****************************************************************************/
long
g_load_library(char *in)
{
#if defined(_WIN32)
return (long)LoadLibraryA(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, const char *name)
{
if (lib == 0)
{
return 0;
}
#if defined(_WIN32)
return GetProcAddress((HMODULE)lib, name);
#else
return dlsym((void *)lib, name);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_system(char *aexec)
{
#if defined(_WIN32)
return 0;
#else
return system(aexec);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
char *
g_get_strerror(void)
{
#if defined(_WIN32)
return 0;
#else
return strerror(errno);
#endif
}
/*****************************************************************************/
int
g_get_errno(void)
{
#if defined(_WIN32)
return GetLastError();
#else
return errno;
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_execvp(const char *p1, char *args[])
{
#if defined(_WIN32)
return 0;
#else
int rv;
g_rm_temp_dir();
rv = execvp(p1, args);
g_mk_temp_dir(0);
return rv;
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_execlp3(const char *a1, const char *a2, const char *a3)
{
#if defined(_WIN32)
return 0;
#else
int rv;
g_rm_temp_dir();
rv = execlp(a1, a2, a3, (void *)0);
g_mk_temp_dir(0);
return rv;
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_signal_child_stop(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGCHLD, func);
#endif
}
/*****************************************************************************/
void
g_signal_segfault(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGSEGV, func);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_signal_hang_up(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGHUP, func);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_signal_user_interrupt(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGINT, func);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_signal_terminate(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGTERM, func);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_signal_pipe(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGPIPE, func);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_signal_usr1(void (*func)(int))
{
#if defined(_WIN32)
#else
signal(SIGUSR1, func);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_fork(void)
{
#if defined(_WIN32)
return 0;
#else
int rv;
rv = fork();
if (rv == 0) /* child */
{
g_mk_temp_dir(0);
}
return rv;
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_setgid(int pid)
{
#if defined(_WIN32)
return 0;
#else
return setgid(pid);
#endif
}
/*****************************************************************************/
/* returns error, zero is success, non zero is error */
/* does not work in win32 */
int
g_initgroups(const char *user, int gid)
{
#if defined(_WIN32)
return 0;
#else
return initgroups(user, gid);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
/* returns user id */
int
g_getuid(void)
{
#if defined(_WIN32)
return 0;
#else
return getuid();
#endif
}
/*****************************************************************************/
/* does not work in win32 */
/* returns user id */
int
g_getgid(void)
{
#if defined(_WIN32)
return 0;
#else
return getgid();
#endif
}
/*****************************************************************************/
/* does not work in win32 */
/* On success, zero is returned. On error, -1 is returned */
int
g_setuid(int pid)
{
#if defined(_WIN32)
return 0;
#else
return setuid(pid);
#endif
}
/*****************************************************************************/
int
g_setsid(void)
{
#if defined(_WIN32)
return -1;
#else
return setsid();
#endif
}
/*****************************************************************************/
int
g_setlogin(const char *name)
{
#ifdef BSD
return setlogin(name);
#else
return -1;
#endif
}
/*****************************************************************************/
/* does not work in win32
returns pid of process that exits or zero if signal occurred */
int
g_waitchild(void)
{
#if defined(_WIN32)
return 0;
#else
int wstat;
int rv;
rv = waitpid(0, &wstat, WNOHANG);
if (rv == -1)
{
if (errno == EINTR) /* signal occurred */
{
rv = 0;
}
}
return rv;
#endif
}
/*****************************************************************************/
/* does not work in win32
returns pid of process that exits or zero if signal occurred */
int
g_waitpid(int pid)
{
#if defined(_WIN32)
return 0;
#else
int rv = 0;
if (pid < 0)
{
rv = -1;
}
else
{
rv = waitpid(pid, 0, 0);
if (rv == -1)
{
if (errno == EINTR) /* signal occurred */
{
rv = 0;
}
}
}
return rv;
#endif
}
/*****************************************************************************/
/* does not work in win32 */
void
g_clearenv(void)
{
#if defined(_WIN32)
#else
#if defined(BSD)
environ[0] = 0;
#else
environ = 0;
#endif
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_setenv(const char *name, const char *value, int rewrite)
{
#if defined(_WIN32)
return 0;
#else
return setenv(name, value, rewrite);
#endif
}
/*****************************************************************************/
/* does not work in win32 */
char *
g_getenv(const 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 (int)GetCurrentProcessId();
#else
return (int)getpid();
#endif
}
/*****************************************************************************/
/* does not work in win32 */
int
g_sigterm(int pid)
{
#if defined(_WIN32)
return 0;
#else
return kill(pid, SIGTERM);
#endif
}
/*****************************************************************************/
/* returns 0 if ok */
/* the caller is responsible to free the buffs */
/* does not work in win32 */
int
g_getuser_info(const char *username, int *gid, int *uid, char **shell,
char **dir, char **gecos)
{
#if defined(_WIN32)
return 1;
#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)
{
*dir = g_strdup(pwd_1->pw_dir);
}
if (shell != 0)
{
*shell = g_strdup(pwd_1->pw_shell);
}
if (gecos != 0)
{
*gecos = g_strdup(pwd_1->pw_gecos);
}
return 0;
}
return 1;
#endif
}
/*****************************************************************************/
/* returns 0 if ok */
/* does not work in win32 */
int
g_getgroup_info(const char *groupname, int *gid)
{
#if defined(_WIN32)
return 1;
#else
struct group *g;
g = getgrnam(groupname);
if (g != 0)
{
if (gid != 0)
{
*gid = g->gr_gid;
}
return 0;
}
return 1;
#endif
}
/*****************************************************************************/
/* returns error */
/* if zero is returned, then ok is set */
/* does not work in win32 */
int
g_check_user_in_group(const char *username, int gid, int *ok)
{
#if defined(_WIN32)
return 1;
#else
struct group *groups;
int i;
groups = getgrgid(gid);
if (groups == 0)
{
return 1;
}
*ok = 0;
i = 0;
while (0 != groups->gr_mem[i])
{
if (0 == g_strcmp(groups->gr_mem[i], username))
{
*ok = 1;
break;
}
i++;
}
return 0;
#endif
}
/*****************************************************************************/
/* returns the time since the Epoch (00:00:00 UTC, January 1, 1970),
measured in seconds.
for windows, returns the number of seconds since the machine was
started. */
int
g_time1(void)
{
#if defined(_WIN32)
return GetTickCount() / 1000;
#else
return time(0);
#endif
}
/*****************************************************************************/
/* returns the number of milliseconds since the machine was
started. */
int
g_time2(void)
{
#if defined(_WIN32)
return (int)GetTickCount();
#else
struct tms tm;
clock_t num_ticks = 0;
g_memset(&tm, 0, sizeof(struct tms));
num_ticks = times(&tm);
return (int)(num_ticks * 10);
#endif
}
/*****************************************************************************/
/* returns time in milliseconds, uses gettimeofday
does not work in win32 */
int
g_time3(void)
{
#if defined(_WIN32)
return 0;
#else
struct timeval tp;
gettimeofday(&tp, 0);
return (tp.tv_sec * 1000) + (tp.tv_usec / 1000);
#endif
}
/******************************************************************************/
/******************************************************************************/
struct bmp_magic
{
char magic[2];
};
struct bmp_hdr
{
unsigned int size; /* file size in bytes */
unsigned short reserved1;
unsigned short reserved2;
unsigned int offset; /* offset to image data, in bytes */
};
struct dib_hdr
{
unsigned int hdr_size;
int width;
int height;
unsigned short nplanes;
unsigned short bpp;
unsigned int compress_type;
unsigned int image_size;
int hres;
int vres;
unsigned int ncolors;
unsigned int nimpcolors;
};
/******************************************************************************/
int
g_save_to_bmp(const char* filename, char* data, int stride_bytes,
int width, int height, int depth, int bits_per_pixel)
{
struct bmp_magic bm;
struct bmp_hdr bh;
struct dib_hdr dh;
int bytes;
int fd;
int index;
int i1;
int pixel;
int extra;
int file_stride_bytes;
char* line;
char* line_ptr;
if ((depth == 24) && (bits_per_pixel == 32))
{
}
else if ((depth == 32) && (bits_per_pixel == 32))
{
}
else
{
g_writeln("g_save_to_bpp: unimp");
return 1;
}
bm.magic[0] = 'B';
bm.magic[1] = 'M';
/* scan lines are 32 bit aligned, bottom 2 bits must be zero */
file_stride_bytes = width * ((depth + 7) / 8);
extra = file_stride_bytes;
extra = extra & 3;
extra = (4 - extra) & 3;
file_stride_bytes += extra;
bh.size = sizeof(bm) + sizeof(bh) + sizeof(dh) + height * file_stride_bytes;
bh.reserved1 = 0;
bh.reserved2 = 0;
bh.offset = sizeof(bm) + sizeof(bh) + sizeof(dh);
dh.hdr_size = sizeof(dh);
dh.width = width;
dh.height = height;
dh.nplanes = 1;
dh.bpp = depth;
dh.compress_type = 0;
dh.image_size = height * file_stride_bytes;
dh.hres = 0xb13;
dh.vres = 0xb13;
dh.ncolors = 0;
dh.nimpcolors = 0;
fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
if (fd == -1)
{
g_writeln("g_save_to_bpp: open error");
return 1;
}
bytes = write(fd, &bm, sizeof(bm));
if (bytes != sizeof(bm))
{
g_writeln("g_save_to_bpp: write error");
}
bytes = write(fd, &bh, sizeof(bh));
if (bytes != sizeof(bh))
{
g_writeln("g_save_to_bpp: write error");
}
bytes = write(fd, &dh, sizeof(dh));
if (bytes != sizeof(dh))
{
g_writeln("g_save_to_bpp: write error");
}
data += stride_bytes * height;
data -= stride_bytes;
if ((depth == 24) && (bits_per_pixel == 32))
{
line = (char *) malloc(file_stride_bytes);
memset(line, 0, file_stride_bytes);
for (index = 0; index < height; index++)
{
line_ptr = line;
for (i1 = 0; i1 < width; i1++)
{
pixel = ((int*)data)[i1];
*(line_ptr++) = (pixel >> 0) & 0xff;
*(line_ptr++) = (pixel >> 8) & 0xff;
*(line_ptr++) = (pixel >> 16) & 0xff;
}
bytes = write(fd, line, file_stride_bytes);
if (bytes != file_stride_bytes)
{
g_writeln("g_save_to_bpp: write error");
}
data -= stride_bytes;
}
free(line);
}
else if (depth == bits_per_pixel)
{
for (index = 0; index < height; index++)
{
bytes = write(fd, data, width * (bits_per_pixel / 8));
if (bytes != width * (bits_per_pixel / 8))
{
g_writeln("g_save_to_bpp: write error");
}
data -= stride_bytes;
}
}
else
{
g_writeln("g_save_to_bpp: unimp");
}
close(fd);
return 0;
}
/*****************************************************************************/
/* returns boolean */
int
g_text2bool(const char *s)
{
if ( (g_atoi(s) != 0) ||
(0 == g_strcasecmp(s, "true")) ||
(0 == g_strcasecmp(s, "on")) ||
(0 == g_strcasecmp(s, "yes")))
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns pointer or nil on error */
void *
g_shmat(int shmid)
{
#if defined(_WIN32)
return 0;
#else
return shmat(shmid, 0, 0);
#endif
}
/*****************************************************************************/
/* returns -1 on error 0 on success */
int
g_shmdt(const void *shmaddr)
{
#if defined(_WIN32)
return -1;
#else
return shmdt(shmaddr);
#endif
}
/*****************************************************************************/
/* returns -1 on error 0 on success */
int
g_gethostname(char *name, int len)
{
return gethostname(name, len);
}
static unsigned char g_reverse_byte[0x100] =
{
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
/*****************************************************************************/
/* mirror each byte while copying */
int
g_mirror_memcpy(void *dst, const void *src, int len)
{
tui8 *dst8;
const tui8 *src8;
dst8 = (tui8 *) dst;
src8 = (const tui8 *) src;
while (len > 0)
{
*dst8 = g_reverse_byte[*src8];
dst8++;
src8++;
len--;
}
return 0;
}
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