added tcp_proxy

4 files changed, 2002 insertions, 0 deletions

diff --git a/tests/tcp_proxy/arch.h b/tests/tcp_proxy/arch.h
new file mode 100644
index 00000000..2f3c51a2
--- /dev/null
+++ b/tests/tcp_proxy/arch.h
@@ -0,0 +1,80 @@
+/*
+   Copyright (c) 2004-2007 Jay Sorg
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation
+   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+   and/or sell copies of the Software, and to permit persons to whom the
+   Software is furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included
+   in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+   DEALINGS IN THE SOFTWARE.
+
+*/
+
+#if !defined(ARCH_H)
+#define ARCH_H
+
+/* check endianess */
+#if defined(__sparc__) || defined(__PPC__) || defined(__ppc__)
+#define B_ENDIAN
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+#define L_ENDIAN
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define B_ENDIAN
+#endif
+/* check if we need to align data */
+#if defined(__sparc__) || defined(__alpha__) || defined(__hppa__) || \
+    defined(__AIX__) || defined(__PPC__) || defined(__mips__) || \
+    defined(__ia64__) || defined(__ppc__)
+#define NEED_ALIGN
+#endif
+
+/* defines for thread creation factory functions */
+#if defined(_WIN32)
+#define THREAD_RV unsigned long
+#define THREAD_CC __stdcall
+#else
+#define THREAD_RV void*
+#define THREAD_CC
+#endif
+
+#if defined(__BORLANDC__) || defined(_WIN32)
+#define APP_CC __fastcall
+#define DEFAULT_CC __cdecl
+#else
+#define APP_CC
+#define DEFAULT_CC
+#endif
+
+#if defined(_WIN32)
+#if defined(__BORLANDC__)
+#define EXPORT_CC _export __cdecl
+#else
+#define EXPORT_CC
+#endif
+#else
+#define EXPORT_CC
+#endif
+
+typedef char ti8;
+typedef unsigned char tui8;
+typedef signed char tsi8;
+typedef short ti16;
+typedef unsigned short tui16;
+typedef signed short tsi16;
+typedef int ti32;
+typedef unsigned int tui32;
+typedef signed int tsi32;
+typedef long tbus;
+
+#endif
diff --git a/tests/tcp_proxy/main.c b/tests/tcp_proxy/main.c
new file mode 100644
index 00000000..7bfc747e
--- /dev/null
+++ b/tests/tcp_proxy/main.c
@@ -0,0 +1,265 @@
+
+#include "os_calls.h"
+
+int        g_loc_io_count = 0;  // bytes read from local port
+int        g_rem_io_count = 0;  // bytes read from remote port
+
+static int g_terminated = 0;
+static char g_buf[1024 * 32];
+
+/*****************************************************************************/
+static int
+main_loop(char* local_port, char* remote_ip, char* remote_port, int hexdump)
+{
+    int lis_sck;
+    int acc_sck;
+    int con_sck;
+    int sel;
+    int count;
+    int sent;
+    int error;
+    int i;
+    int acc_to_con;
+    int con_to_acc;
+
+    acc_to_con = 0;
+    con_to_acc = 0;
+    acc_sck = 0;
+
+    /* create the listening socket and setup options */
+    lis_sck = g_tcp_socket();
+    g_tcp_set_non_blocking(lis_sck);
+    error = g_tcp_bind(lis_sck, local_port);
+    if (error != 0)
+    {
+        g_writeln("bind failed");
+    }
+
+    /* listen for an incomming connection */
+    if (error == 0)
+    {
+        error = g_tcp_listen(lis_sck);
+        if (error == 0)
+        {
+            g_writeln("listening for connection");
+        }
+    }
+
+    /* accept an incomming connection */
+    if (error == 0)
+    {
+        while ((!g_terminated) && (error == 0))
+        {
+            acc_sck = g_tcp_accept(lis_sck);
+            if ((acc_sck == -1) && g_tcp_last_error_would_block(lis_sck))
+            {
+                g_sleep(100);
+            }
+            else if (acc_sck == -1)
+            {
+                error = 1;
+            }
+            else
+            {
+                break;
+            }
+        }
+        if (error == 0)
+        {
+            error = g_terminated;
+        }
+
+        /* stop listening */
+        g_tcp_close(lis_sck);
+        lis_sck = 0;
+        if (error == 0)
+        {
+            g_writeln("got connection");
+        }
+    }
+
+    /* connect outgoing socket */
+    con_sck = 0;
+    if (error == 0)
+    {
+        con_sck = g_tcp_socket();
+        g_tcp_set_non_blocking(con_sck);
+        error = g_tcp_connect(con_sck, remote_ip, remote_port);
+        if ((error == -1) && g_tcp_last_error_would_block(con_sck))
+        {
+            error = 0;
+            i = 0;
+            while ((!g_tcp_can_send(con_sck, 100)) && (!g_terminated) && (i < 100))
+            {
+                g_sleep(100);
+                i++;
+            }
+            if (i > 99)
+            {
+                g_writeln("timout connecting");
+                error = 1;
+            }
+            if (g_terminated)
+            {
+                error = 1;
+            }
+        }
+        if ((error != 0) && (!g_terminated))
+        {
+            g_writeln("error connecting to remote\r\n");
+        }
+    }
+    while ((!g_terminated) && (error == 0))
+    {
+        sel = g_tcp_select(con_sck, acc_sck);
+        if (sel == 0)
+        {
+            g_sleep(10);
+            continue;
+        }
+        if (sel & 1)
+        {
+            // can read from con_sck w/o blocking
+            count = g_tcp_recv(con_sck, g_buf, 1024 * 16, 0);
+            error = count < 1;
+            if (error == 0)
+            {
+                g_loc_io_count += count;
+                con_to_acc += count;
+                if (hexdump)
+                {
+                    g_writeln("from remove, the socket from connect");
+                    g_hexdump(g_buf, count);
+                }
+#if 0
+                g_writeln("local_io_count: %d\tremote_io_count: %d",
+                        g_loc_io_count, g_rem_io_count);
+#endif
+                sent = 0;
+                while ((sent < count) && (error == 0) && (!g_terminated))
+                {
+                    i = g_tcp_send(acc_sck, g_buf + sent, count - sent, 0);
+                    if ((i == -1) && g_tcp_last_error_would_block(acc_sck))
+                    {
+                        g_tcp_can_send(acc_sck, 1000);
+                    }
+                    else if (i < 1)
+                    {
+                        error = 1;
+                    }
+                    else
+                    {
+                        sent += i;
+                    }
+                }
+            }
+        }
+        if (sel & 2)
+        {
+            // can read from acc_sck w/o blocking
+            count = g_tcp_recv(acc_sck, g_buf, 1024 * 16, 0);
+            error = count < 1;
+            if (error == 0)
+            {
+                g_rem_io_count += count;
+                acc_to_con += count;
+                if (hexdump)
+                {
+                    g_writeln("from accepted, the socket from accept");
+                    g_hexdump(g_buf, count);
+                }
+#if 0
+                g_writeln("local_io_count: %d\tremote_io_count: %d",
+                        g_loc_io_count, g_rem_io_count);
+#endif
+                sent = 0;
+                while ((sent < count) && (error == 0) && (!g_terminated))
+                {
+                    i = g_tcp_send(con_sck, g_buf + sent, count - sent, 0);
+                    if ((i == -1) && g_tcp_last_error_would_block(con_sck))
+                    {
+                        g_tcp_can_send(con_sck, 1000);
+                    }
+                    else if (i < 1)
+                    {
+                        error = 1;
+                    }
+                    else
+                    {
+                        sent += i;
+                    }
+                }
+            }
+        }
+    }
+    g_tcp_close(lis_sck);
+    g_tcp_close(con_sck);
+    g_tcp_close(acc_sck);
+    g_writeln("acc_to_con %d", acc_to_con);
+    g_writeln("con_to_acc %d", con_to_acc);
+    return 0;
+}
+
+
+/*****************************************************************************/
+static int
+usage(void)
+{
+    g_writeln("tcp_proxy <local-port> <remote-ip> <remote-port> [dump]");
+    return 0;
+}
+
+
+/*****************************************************************************/
+void
+proxy_shutdown(int sig)
+{
+    g_writeln("shutting down");
+    g_terminated = 1;
+}
+
+void
+clear_counters(int sig)
+{
+    g_writeln("cleared counters at: local_io_count: %d remote_io_count: %d", 
+              g_loc_io_count, g_rem_io_count);
+    g_loc_io_count = 0;
+    g_rem_io_count = 0;
+}
+
+/*****************************************************************************/
+int
+main(int argc, char** argv)
+{
+    int dump;
+
+    if (argc < 4)
+    {
+        usage();
+        return 0;
+    }
+    g_init();
+    g_signal(2, proxy_shutdown); /* SIGINT */
+    g_signal(9, proxy_shutdown); /* SIGKILL */
+    g_signal(10, clear_counters);/* SIGUSR1*/
+    g_signal(15, proxy_shutdown);/* SIGTERM */
+    if (argc < 5)
+    {
+        while (!g_terminated)
+        {
+            g_loc_io_count = 0;
+            g_rem_io_count = 0;
+            main_loop(argv[1], argv[2], argv[3], 0);
+        }
+    }
+    else
+    {
+        dump = g_strcasecmp(argv[4], "dump") == 0;
+        while (!g_terminated)
+        {
+            main_loop(argv[1], argv[2], argv[3], dump);
+        }
+    }
+    g_deinit();
+    return 0;
+}
diff --git a/tests/tcp_proxy/os_calls.c b/tests/tcp_proxy/os_calls.c
new file mode 100644
index 00000000..b17856bc
--- /dev/null
+++ b/tests/tcp_proxy/os_calls.c
@@ -0,0 +1,1449 @@
+/*
+   Copyright (c) 2004-2007 Jay Sorg
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation
+   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+   and/or sell copies of the Software, and to permit persons to whom the
+   Software is furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included
+   in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+   DEALINGS IN THE SOFTWARE.
+
+   generic operating system calls
+
+   put all the os / arch define in here you want
+*/
+
+#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/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>
+#include <grp.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "os_calls.h"
+#include "arch.h"
+
+/* for clearenv() */
+#if defined(_WIN32)
+#else
+extern char** environ;
+#endif
+
+/* for solaris */
+#if !defined(PF_LOCAL)
+#define PF_LOCAL AF_UNIX
+#endif
+#if !defined(INADDR_NONE)
+#define INADDR_NONE ((unsigned long)-1)
+#endif
+
+/*****************************************************************************/
+void APP_CC
+g_init(void)
+{
+    #if defined(_WIN32)
+    WSADATA wsadata;
+
+    WSAStartup(2, &wsadata);
+    #endif
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_deinit(void)
+{
+    #if defined(_WIN32)
+    WSACleanup();
+    #endif
+}
+
+
+/*****************************************************************************/
+/* allocate memory, returns a pointer to it, size bytes are allocated,
+   if zero is non zero, each byte will be set to zero */
+void* APP_CC
+g_malloc(int size, int zero)
+{
+    char* rv;
+
+    rv = (char*)malloc(size);
+    if (zero)
+    {
+        memset(rv, 0, size);
+    }
+    return rv;
+}
+
+
+/*****************************************************************************/
+/* free the memory pointed to by ptr, ptr can be zero */
+void APP_CC
+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 DEFAULT_CC
+g_printf(const char* format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    vfprintf(stdout, format, ap);
+    va_end(ap);
+}
+
+
+/*****************************************************************************/
+void DEFAULT_CC
+g_sprintf(char* dest, const char* format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    vsprintf(dest, format, ap);
+    va_end(ap);
+}
+
+
+/*****************************************************************************/
+void DEFAULT_CC
+g_snprintf(char* dest, int len, const char* format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    vsnprintf(dest, len, format, ap);
+    va_end(ap);
+}
+
+
+/*****************************************************************************/
+void DEFAULT_CC
+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 DEFAULT_CC
+g_write(const char* format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    vfprintf(stdout, format, ap);
+    va_end(ap);
+}
+
+
+/*****************************************************************************/
+/* produce a hex dump */
+void APP_CC
+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_writeln("");
+        offset += thisline;
+        line += thisline;
+    }
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_memset(void* ptr, int val, int size)
+{
+    memset(ptr, val, size);
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_memcpy(void* d_ptr, const void* s_ptr, int size)
+{
+    memcpy(d_ptr, s_ptr, size);
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_getchar(void)
+{
+    return getchar();
+}
+
+
+/*****************************************************************************/
+int APP_CC
+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 APP_CC
+g_tcp_socket(void)
+{
+    int rv;
+    int i;
+
+    rv = socket(PF_INET, SOCK_STREAM, 0);
+    #if defined(_WIN32)
+    i = 1;
+    setsockopt(rv, IPPROTO_TCP, TCP_NODELAY, (char*)&i, sizeof(i));
+    i = 1;
+    setsockopt(rv, SOL_SOCKET, SO_REUSEADDR, (char*)&i, sizeof(i));
+    i = 8192 * 2;
+    setsockopt(rv, SOL_SOCKET, SO_SNDBUF, (char*)&i, sizeof(i));
+    #else
+    i = 1;
+    setsockopt(rv, IPPROTO_TCP, TCP_NODELAY, (void*)&i, sizeof(i));
+    i = 1;
+    setsockopt(rv, SOL_SOCKET, SO_REUSEADDR, (void*)&i, sizeof(i));
+    i = 8192 * 2;
+    setsockopt(rv, SOL_SOCKET, SO_SNDBUF, (void*)&i, sizeof(i));
+    #endif
+    return rv;
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_tcp_local_socket(void)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return socket(PF_LOCAL, SOCK_STREAM, 0);
+    #endif
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_tcp_close(int sck)
+{
+    if (sck == 0)
+    {
+        return;
+    }
+    shutdown(sck, 2);
+    #if defined(_WIN32)
+    closesocket(sck);
+    #else
+    close(sck);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_tcp_connect(int sck, const char* address, const 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 APP_CC
+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 APP_CC
+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 APP_CC
+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 APP_CC
+g_tcp_listen(int sck)
+{
+    return listen(sck, 2);
+}
+
+
+/*****************************************************************************/
+int APP_CC
+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 APP_CC
+g_sleep(int msecs)
+{
+    #if defined(_WIN32)
+    Sleep(msecs);
+    #else
+    usleep(msecs * 1000);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_tcp_last_error_would_block(int sck)
+{
+    #if defined(_WIN32)
+    return WSAGetLastError() == WSAEWOULDBLOCK;
+    #else
+    return (errno == EWOULDBLOCK) || (errno == EINPROGRESS);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+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 APP_CC
+g_tcp_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
+}
+
+
+/*****************************************************************************/
+/* wait 'millis' milliseconds for the socket to be able to write */
+/* returns boolean */
+int APP_CC
+g_tcp_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 APP_CC
+g_tcp_can_recv(int sck, int millis)
+{
+    fd_set rfds;
+    struct timeval time;
+    int rv;
+
+    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 APP_CC
+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;
+        }
+    }
+    else
+    {
+        rv = 0;
+    }
+    return rv;
+}
+
+
+/*****************************************************************************/
+void APP_CC
+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 APP_CC
+g_abs(int i)
+{
+    return abs(i);
+}
+
+
+/*****************************************************************************/
+int APP_CC
+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 APP_CC
+g_file_open(const 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
+    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 error, always 0 */
+int APP_CC
+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 APP_CC
+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 writen or -1 on error */
+int APP_CC
+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, returns offset on success, -1 on failure */
+int APP_CC
+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 APP_CC
+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, always zero */
+int APP_CC
+g_set_file_rights(const char* filename, int read, int write)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    int flags;
+
+    flags = read ? S_IRUSR : 0;
+    flags |= write ? S_IWUSR : 0;
+    chmod(filename, flags);
+    return 0;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns error */
+int APP_CC
+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, always zero */
+int APP_CC
+g_mkdir(const char* dirname)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    mkdir(dirname, S_IRWXU);
+    return 0;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* gets the current working directory and puts up to maxlen chars in
+   dirname
+   always returns 0 */
+char* APP_CC
+g_get_current_dir(char* dirname, int maxlen)
+{
+    #if defined(_WIN32)
+    GetCurrentDirectory(maxlen, dirname);
+    return 0;
+    #else
+    getcwd(dirname, maxlen);
+    return 0;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns error, zero on success and -1 on failure */
+int APP_CC
+g_set_current_dir(char* dirname)
+{
+    #if defined(_WIN32)
+    if (SetCurrentDirectory(dirname))
+    {
+        return 0;
+    }
+    else
+    {
+        return -1;
+    }
+    #else
+    return chdir(dirname);
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns boolean, non zero if the file exists */
+int APP_CC
+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 directory exists */
+int APP_CC
+g_directory_exist(const char* dirname)
+{
+    #if defined(_WIN32)
+    return 0;                    // use GetFileAttributes and check return value
+    // is not -1 and FILE_ATTRIBUT_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 APP_CC
+g_create_dir(const char* dirname)
+{
+    #if defined(_WIN32)
+                                 // test this
+    return CreateDirectory(dirname, 0);
+    #else
+    return mkdir(dirname, (mode_t)-1) == 0;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns boolean */
+int APP_CC
+g_remove_dir(const char* dirname)
+{
+    #if defined(_WIN32)
+                                 // test this
+    return RemoveDirectory(dirname);
+    #else
+    return rmdir(dirname) == 0;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns non zero if the file was deleted */
+int APP_CC
+g_file_delete(const char* filename)
+{
+    #if defined(_WIN32)
+    return DeleteFile(filename);
+    #else
+    return unlink(filename) != -1;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns length of text */
+int APP_CC
+g_strlen(const char* text)
+{
+    if (text == 0)
+    {
+        return 0;
+    }
+    return strlen(text);
+}
+
+
+/*****************************************************************************/
+/* returns dest */
+char* APP_CC
+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* APP_CC
+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* APP_CC
+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* APP_CC
+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);
+    g_strcpy(p, in);
+    return p;
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_strcmp(const char* c1, const char* c2)
+{
+    return strcmp(c1, c2);
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_strncmp(const char* c1, const char* c2, int len)
+{
+    return strncmp(c1, c2, len);
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_strcasecmp(const char* c1, const char* c2)
+{
+    #if defined(_WIN32)
+    return stricmp(c1, c2);
+    #else
+    return strcasecmp(c1, c2);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+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 APP_CC
+g_atoi(char* str)
+{
+    return atoi(str);
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_pos(char* str, const char* to_find)
+{
+    char* pp;
+
+    pp = strstr(str, to_find);
+    if (pp == 0)
+    {
+        return -1;
+    }
+    return (pp - str);
+}
+
+
+/*****************************************************************************/
+long APP_CC
+g_load_library(char* in)
+{
+    #if defined(_WIN32)
+    return (long)LoadLibrary(in);
+    #else
+    return (long)dlopen(in, RTLD_LOCAL | RTLD_LAZY);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+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* APP_CC
+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
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_system(char* aexec)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return system(aexec);
+    #endif
+}
+
+
+/*****************************************************************************/
+char* APP_CC
+g_get_strerror(void)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return strerror(errno);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_execvp(const char* p1, char* args[])
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return execvp(p1, args);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_execlp3(const char* a1, const char* a2, const char* a3)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return execlp(a1, a2, a3, (void*)0);
+    #endif
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_signal(int sig_num, void (*func)(int))
+{
+    #if defined(_WIN32)
+    #else
+    signal(sig_num, func);
+    #endif
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_signal_child_stop(void (*func)(int))
+{
+    #if defined(_WIN32)
+    #else
+    signal(SIGCHLD, func);
+    #endif
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_unset_signals(void)
+{
+    #if defined(_WIN32)
+    #else
+    sigset_t mask;
+
+    sigemptyset(&mask);
+    sigprocmask(SIG_SETMASK, &mask, NULL);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_fork(void)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return fork();
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_setgid(int pid)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return setgid(pid);
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns error, zero is success, non zero is error */
+int APP_CC
+g_initgroups(const char* user, int gid)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return initgroups(user ,gid);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_setuid(int pid)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return setuid(pid);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_waitchild(void)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    int wstat;
+
+    return waitpid(0, &wstat, WNOHANG);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_waitpid(int pid)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return waitpid(pid, 0, 0);
+    #endif
+}
+
+
+/*****************************************************************************/
+void APP_CC
+g_clearenv(void)
+{
+    #if defined(_WIN32)
+    #else
+    environ = 0;
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_setenv(const char* name, const char* value, int rewrite)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return setenv(name, value, rewrite);
+    #endif
+}
+
+
+/*****************************************************************************/
+char* APP_CC
+g_getenv(const char* name)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return getenv(name);
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_exit(int exit_code)
+{
+    _exit(exit_code);
+    return 0;
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_getpid(void)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return getpid();
+    #endif
+}
+
+
+/*****************************************************************************/
+int APP_CC
+g_sigterm(int pid)
+{
+    #if defined(_WIN32)
+    return 0;
+    #else
+    return kill(pid, SIGTERM);
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns 0 if ok */
+int APP_CC
+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)
+        {
+            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);
+        }
+        return 0;
+    }
+    return 1;
+    #endif
+}
+
+
+/*****************************************************************************/
+/* returns 0 if ok */
+int APP_CC
+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 */
+int APP_CC
+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. */
+int APP_CC
+g_time1(void)
+{
+    #if defined(_WIN32)
+    return GetTickCount() / 1000;
+    #else
+    return time(0);
+    #endif
+}
diff --git a/tests/tcp_proxy/os_calls.h b/tests/tcp_proxy/os_calls.h
new file mode 100644
index 00000000..768cc38c
--- /dev/null
+++ b/tests/tcp_proxy/os_calls.h
@@ -0,0 +1,208 @@
+/*
+   Copyright (c) 2004-2007 Jay Sorg
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation
+   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+   and/or sell copies of the Software, and to permit persons to whom the
+   Software is furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included
+   in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+   DEALINGS IN THE SOFTWARE.
+
+   generic operating system calls
+*/
+
+#if !defined(OS_CALLS_H)
+#define OS_CALLS_H
+
+#include "arch.h"
+
+void APP_CC
+g_init(void);
+void APP_CC
+g_deinit(void);
+void* APP_CC
+g_malloc(int size, int zero);
+void APP_CC
+g_free(void* ptr);
+void DEFAULT_CC
+g_printf(const char *format, ...);
+void DEFAULT_CC
+g_sprintf(char* dest, const char* format, ...);
+void DEFAULT_CC
+g_snprintf(char* dest, int len, const char* format, ...);
+void DEFAULT_CC
+g_writeln(const char* format, ...);
+void DEFAULT_CC
+g_write(const char* format, ...);
+void APP_CC
+g_hexdump(char* p, int len);
+void APP_CC
+g_memset(void* ptr, int val, int size);
+void APP_CC
+g_memcpy(void* d_ptr, const void* s_ptr, int size);
+int APP_CC
+g_getchar(void);
+int APP_CC
+g_tcp_set_no_delay(int sck);
+int APP_CC
+g_tcp_socket(void);
+int APP_CC
+g_tcp_local_socket(void);
+void APP_CC
+g_tcp_close(int sck);
+int APP_CC
+g_tcp_connect(int sck, const char* address, const char* port);
+int APP_CC
+g_tcp_force_send(int sck, char* data, int len);
+int APP_CC
+g_tcp_force_recv(int sck, char* data, int len);
+int APP_CC
+g_tcp_set_non_blocking(int sck);
+int APP_CC
+g_tcp_bind(int sck, char* port);
+int APP_CC
+g_tcp_local_bind(int sck, char* port);
+int APP_CC
+g_tcp_listen(int sck);
+int APP_CC
+g_tcp_accept(int sck);
+int APP_CC
+g_tcp_recv(int sck, void* ptr, int len, int flags);
+int APP_CC
+g_tcp_send(int sck, const void* ptr, int len, int flags);
+int APP_CC
+g_tcp_last_error_would_block(int sck);
+int APP_CC
+g_tcp_can_send(int sck, int millis);
+int APP_CC
+g_tcp_can_recv(int sck, int millis);
+int APP_CC
+g_tcp_select(int sck1, int sck2);
+void APP_CC
+g_sleep(int msecs);
+void APP_CC
+g_random(char* data, int len);
+int APP_CC
+g_abs(int i);
+int APP_CC
+g_memcmp(const void* s1, const void* s2, int len);
+int APP_CC
+g_file_open(const char* file_name);
+int APP_CC
+g_file_close(int fd);
+int APP_CC
+g_file_read(int fd, char* ptr, int len);
+int APP_CC
+g_file_write(int fd, char* ptr, int len);
+int APP_CC
+g_file_seek(int fd, int offset);
+int APP_CC
+g_file_lock(int fd, int start, int len);
+int APP_CC
+g_set_file_rights(const char* filename, int read, int write);
+int APP_CC
+g_chmod_hex(const char* filename, int flags);
+int APP_CC
+g_mkdir(const char* dirname);
+char* APP_CC
+g_get_current_dir(char* dirname, int maxlen);
+int APP_CC
+g_set_current_dir(char* dirname);
+int APP_CC
+g_file_exist(const char* filename);
+int APP_CC
+g_directory_exist(const char* dirname);
+int APP_CC
+g_create_dir(const char* dirname);
+int APP_CC
+g_remove_dir(const char* dirname);
+int APP_CC
+g_file_delete(const char* filename);
+int APP_CC
+g_strlen(const char* text);
+char* APP_CC
+g_strcpy(char* dest, const char* src);
+char* APP_CC
+g_strncpy(char* dest, const char* src, int len);
+char* APP_CC
+g_strcat(char* dest, const char* src);
+char* APP_CC
+g_strdup(const char* in);
+int APP_CC
+g_strcmp(const char* c1, const char* c2);
+int APP_CC
+g_strncmp(const char* c1, const char* c2, int len);
+int APP_CC
+g_strcasecmp(const char* c1, const char* c2);
+int APP_CC
+g_strncasecmp(const char* c1, const char* c2, int len);
+int APP_CC
+g_atoi(char* str);
+int APP_CC
+g_pos(char* str, const char* to_find);
+long APP_CC
+g_load_library(char* in);
+int APP_CC
+g_free_library(long lib);
+void* APP_CC
+g_get_proc_address(long lib, const char* name);
+int APP_CC
+g_system(char* aexec);
+char* APP_CC
+g_get_strerror(void);
+int APP_CC
+g_execvp(const char* p1, char* args[]);
+int APP_CC
+g_execlp3(const char* a1, const char* a2, const char* a3);
+void APP_CC
+g_signal(int sig_num, void (*func)(int));
+void APP_CC
+g_signal_child_stop(void (*func)(int));
+void APP_CC
+g_unset_signals(void);
+int APP_CC
+g_fork(void);
+int APP_CC
+g_setgid(int pid);
+int APP_CC
+g_initgroups(const char* user, int gid);
+int APP_CC
+g_setuid(int pid);
+int APP_CC
+g_waitchild(void);
+int APP_CC
+g_waitpid(int pid);
+void APP_CC
+g_clearenv(void);
+int APP_CC
+g_setenv(const char* name, const char* value, int rewrite);
+char* APP_CC
+g_getenv(const char* name);
+int APP_CC
+g_exit(int exit_code);
+int APP_CC
+g_getpid(void);
+int APP_CC
+g_sigterm(int pid);
+int APP_CC
+g_getuser_info(const char* username, int* gid, int* uid, char* shell,
+               char* dir, char* gecos);
+int APP_CC
+g_getgroup_info(const char* groupname, int* gid);
+int APP_CC
+g_check_user_in_group(const char* username, int gid, int* ok);
+int APP_CC
+g_time1(void);
+
+#endif