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cf-client-win.c
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/*
* Cuttlefish Windows Client
* Copyright (C) Scott Weisman
*/
// below hard-coded defines are used in one or more includes and not defined in MINGW includes
#define _WIN32_WINNT 0x0501
#define JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE 0x00002000
#include <sys/stat.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <io.h>
#include <process.h>
#include <winsock2.h>
#if defined(CF_CYASSL)
// WolfSSL, formerly CYASSL
#include <cyassl/openssl/ssl.h>
#else
#include <openssl/ssl.h>
#include <openssl/err.h>
#endif
#define CF_CLIENT_WIN
#define MAX_BUFFER_SIZE 1024
#define SSL_CHECK if (ssl_io_result < 1) break
#define CLOSE_HANDLE(h) if (h) (CloseHandle(h), ((h) = NULL))
#define TOLOWER(x) ((x >= 'A') && (x <= 'Z') ? (x | 0x20) : x)
typedef struct
{
uint32_t id;
char payload[MAX_BUFFER_SIZE]; // command line or file name
unsigned int send_count;
unsigned int receive_count;
unsigned char terminate;
unsigned char disconnect;
// CONNECT
SOCKET socket;
// EXEC
HANDLE hEvent;
HANDLE hThread;
unsigned int thread_id;
PROCESS_INFORMATION procinfo;
HANDLE stdout_read, stdin_write;
// FILE
char mode;
FILE *fp;
} s_cf_socket;
SOCKET server_socket;
HANDLE mutex_ssl_io = NULL, mutex_log = NULL, job_obj = NULL;
time_t packet_send_time = 0, packet_read_time = 0;
char cf_path[MAX_BUFFER_SIZE] = "";
SSL *ssl = NULL;
SSL_CTX *ssl_ctx = NULL;
SSL_METHOD *ssl_method = NULL;
int ssl_io_result = 1, timeout = 0;
int send_buffer(int socket, const char *buf, int len);
#include "common.h"
#include "XGetopt.h"
void event_loop(void);
int event_handle(void);
unsigned __stdcall cf_connect(LPVOID arg);
unsigned __stdcall cf_exec(LPVOID arg);
unsigned __stdcall cf_file_read(LPVOID arg);
SOCKET connect_socket(const char *host, const int port);
int ssl_end(int retval);
int ssl_begin(const char *servercert, const char *clientkey);
int ssl_handshake(SOCKET sd);
int ssl_pending(int delay);
int ssl_write(const void *buf, int len);
int ssl_read(void *buf, int len);
int log_ssl_error(int retval);
int do_select(fd_set *read_list, fd_set *write_list, long usec, char *msg);
void disconnect_check(void);
void disconnect(s_cf_socket *cf_socket);
void cf_token_replace(char* str);
void str_token_replace(char *str, char *token_str, char *replace_str);
int log_socket_error(s_cf_socket *cf_socket, DWORD error, char *msg);
int main(int argc, char *argv[])
{
char server_host[MAX_BUFFER_SIZE] = "";
char server_cert[MAX_BUFFER_SIZE * 4] = "";
char client_cert[MAX_BUFFER_SIZE * 4] = "";
int server_port = 0;
int opt;
while ((opt = getopt(argc, argv, "p:l:u:w:s:c:")) != EOF)
{
switch (opt)
{
case 'u':
strncpy(server_host, optarg, MAX_BUFFER_SIZE);
break;
case 'p':
server_port = atoi(optarg);
break;
case 'w':
strncpy(cf_path, optarg, MAX_BUFFER_SIZE);
break;
case 'l':
strncpy(log_file, optarg, MAX_BUFFER_SIZE);
break;
case 's':
// assumes -w already parsed
if (cf_path[0] && strlen(optarg) < MAX_BUFFER_SIZE)
sprintf(server_cert, "%s\\%s", cf_path, optarg);
break;
case 'c':
// assumes -w already parsed
if (cf_path[0] && strlen(optarg) < MAX_BUFFER_SIZE)
sprintf(client_cert, "%s\\%s", cf_path, optarg);
break;
}
}
print_log("MAIN: ENTER");
if (!server_host[0])
{
print_log("MAIN: server host missing; exiting");
return -1;
}
else if (!server_port)
{
print_log("MAIN: server port missing; exiting");
return -1;
}
else if (!server_cert[0])
{
print_log("MAIN: server cert missing; exiting");
return -1;
}
else if (!client_cert[0])
{
print_log("MAIN: client cert missing; exiting");
return -1;
}
if ((job_obj = CreateJobObject(NULL, NULL)))
{
// configure all child processes associated with the job to terminate with the parent
JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli;
clear(&jeli, sizeof(jeli));
jeli.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
if (!SetInformationJobObject(job_obj, JobObjectExtendedLimitInformation, &jeli, sizeof(jeli)))
{
print_log("MAIN: could not set job object info; exiting");
return -1;
}
}
else
{
print_log("MAIN: could not create job object; exiting");
return -1;
}
WSADATA wsa_data;
int result;
srand((unsigned int) time(NULL));
mutex_log = CreateMutex(NULL, FALSE, NULL);
mutex_ssl_io = CreateMutex(NULL, FALSE, NULL);
print_log("MAIN: ENTER EVENT LOOP");
do
{
if ((result = WSAStartup(MAKEWORD(1, 1), &wsa_data)))
{
print_log("MAIN: WSAStartup() error %d", result);
break;
}
if (ssl_begin(server_cert, client_cert))
break;
if ((server_socket = connect_socket(server_host, server_port)) == INVALID_SOCKET)
break;
if (ssl_handshake(server_socket))
break;
ssl_io_result = 1;
packet_send_time = time(NULL);
packet_read_time = time(NULL);
memset(cf_socket_list, 0, sizeof(cf_socket_list));
event_loop();
} while (0);
print_log("MAIN: EXIT EVENT LOOP");
// xxx move shutdown code to atexit() function
ssl_end(-10000);
if (server_socket != INVALID_SOCKET)
close_socket(server_socket);
WSACleanup();
CLOSE_HANDLE(mutex_log);
CLOSE_HANDLE(mutex_ssl_io);
print_log("MAIN: EXIT");
return 0;
}
void event_loop(void)
{
int result, select_count;
unsigned char buffer[MAX_PACKET_SIZE];
print_log("EVENT LOOP: ENTER");
for (;;)
{
SSL_CHECK;
disconnect_check();
if ((select_count = ssl_pending(10000)) > 0)
{
do
{
print_log("EVENT LOOP: READ FROM SERVER");
result = ssl_read(buffer, MAX_PACKET_SIZE);
if (result < 0)
{
print_log("EVENT LOOP NULL READ");
}
else if (!result)
{
print_log("EVENT LOOP ERROR: SSL READ %d", result);
break;
}
else
{
if (!queue_put(buffer, result))
break;
if (!event_handle())
break;
}
SSL_CHECK;
disconnect_check();
} while (SSL_pending(ssl));
}
else if (select_count < 0)
{
// xxx error
print_log("EVENT LOOP SSL_PENDING ERROR: %d", select_count);
break;
}
SSL_CHECK;
while (event_handle())
{
SSL_CHECK;
disconnect_check();
}
SSL_CHECK;
if (time(NULL) - packet_send_time >= 25)
{
if (send_packet(0, CF_PACKET_PING, NULL, 0))
{
print_log("EVENT LOOP ERROR: BAD PING SEND");
timeout = 1;
break;
}
cf_socket_dump();
}
if (time(NULL) - packet_read_time >= 35)
{
print_log("EVENT LOOP ERROR: ACTIVITY TIMEOUT");
timeout = 1;
cf_socket_dump();
break;
}
}
print_log("EVENT LOOP: EXIT");
}
int event_handle(void)
{
s_cf_packet *cf_packet = queue_get();
s_cf_socket *cf_socket;
struct _stat stat_buf;
//~ int payload_len;
char *file_op;
//~ char *ext;
int file_path_err = 0;
int i = 0;
if (!cf_packet)
return 0;
char *payload = (char *) PACKET_PAYLOAD(cf_packet);
print_log("EVENT HANDLE START: id=%d, type=%d, len=%d", cf_packet->id, cf_packet->type, cf_packet->len);
packet_read_time = time(NULL);
switch(cf_packet->type)
{
case CF_PACKET_PING:
// ignore - no response or error logging
break;
case CF_PACKET_CONNECT:
print_log("EVENT HANDLE CONNECT: '%s'", (cf_packet + 1));
if ((cf_socket = cf_socket_new(cf_packet->id)))
{
char *connect_addr = (char *) (cf_packet + 1);
char *connect_port = strchr(connect_addr, ':');
if (!connect_port)
{
print_log(" EVENT HANDLE ERROR: NO PORT");
disconnect(cf_socket);
break;
}
*(connect_port++) = '\0'; // separate address from port
int port = atoi(connect_port);
if (port <= 0 || port > 65535)
{
print_log(" EVENT HANDLE ERROR: BAD PORT");
disconnect(cf_socket);
break;
}
cf_socket->socket = connect_socket(connect_addr, port);
print_log("EVENT HANDLE CONNECT SOCKET: %d", cf_socket->socket);
if (cf_socket->socket == INVALID_SOCKET)
{
print_log(" EVENT HANDLE ERROR: BAD SOCKET");
disconnect(cf_socket);
break;
}
cf_socket->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!(cf_socket->hThread = (HANDLE) _beginthreadex(NULL, 0, cf_connect, (LPVOID) cf_socket, 0, &cf_socket->thread_id)))
{
print_log(" EVENT HANDLE ERROR: _beginthreadex error %d", errno);
disconnect(cf_socket);
break;
}
}
else
print_log(" EVENT HANDLE ERROR: NO FREE SOCKET id=%d", cf_packet->id);
break;
case CF_PACKET_EXEC:
if ((cf_socket = cf_socket_new(cf_packet->id)))
{
strncpy(cf_socket->payload, payload, MAX_BUFFER_SIZE);
cf_socket->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!(cf_socket->hThread = (HANDLE) _beginthreadex(NULL, 0, cf_exec, (LPVOID) cf_socket, 0, &cf_socket->thread_id)))
{
// assume fatal error always disconnect
print_log(" EVENT HANDLE ERROR: _beginthreadex error %d", errno);
disconnect(cf_socket);
break;
}
}
else
print_log(" EVENT HANDLE ERROR: NO FREE SOCKET id=%d", cf_packet->id);
break;
case CF_PACKET_FILE:
if (!_stat(payload, &stat_buf))
{
// file exists - for file sending only
print_log(" EVENT HANDLE FILE READ");
file_op = "rb";
}
else
{
// no file - for file receiving only
print_log(" EVENT HANDLE FILE WRITE");
file_op = "wb";
}
if ((cf_socket = cf_socket_new(cf_packet->id)))
{
strncpy(cf_socket->payload, payload, MAX_BUFFER_SIZE);
cf_token_replace(cf_socket->payload);
print_log(" EVENT HANDLE TYPE: FILE payload={%s}", cf_socket->payload);
// xxx change to use open(), or OpenFile() or whatever API is not buffered, then use ReadFile and WriteFile
if (file_op[0] == 'r' && (cf_socket->fp = fopen(cf_socket->payload, file_op)))
{
print_log(" EVENT HANDLE TYPE: FILE GET id=%d", cf_socket->id);
cf_socket->mode = 'r';
cf_socket->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!(cf_socket->hThread = (HANDLE) _beginthreadex(NULL, 0, cf_file_read, (LPVOID) cf_socket, 0, &cf_socket->thread_id)))
{
// assume fatal error always disconnect
print_log(" EVENT HANDLE ERROR: _beginthreadex %d", errno);
disconnect(cf_socket);
break;
}
}
else if (file_op[0] == 'w' && (cf_socket->fp = fopen(cf_socket->payload, file_op)))
{
print_log(" EVENT HANDLE TYPE: FILE PUT id=%d", cf_socket->id);
cf_socket->mode = 'w';
}
else
{
// assume fatal error always disconnect
print_log(" EVENT HANDLE FILE FATAL ERROR: fopen %d", errno);
disconnect(cf_socket);
break;
}
}
else
print_log(" EVENT HANDLE ERROR: NO FREE SOCKET id=%d", cf_packet->id);
break;
case CF_PACKET_DATA:
if ((cf_socket = cf_socket_find(cf_packet->id)))
{
cf_socket->receive_count += cf_packet->len;
if (cf_socket->socket)
{
print_log(" EVENT HANDLE TYPE: DATA PUT id=%d", cf_socket->id);
if (send_buffer(cf_socket->socket, payload, cf_packet->len))
{
// assume fatal error always disconnect
print_log(" EVENT SEND BUFFER ERROR: id=%d", cf_packet->id);
disconnect(cf_socket);
break;
}
}
else if (cf_socket->mode == 'w')
{
// FILE
print_log(" EVENT HANDLE TYPE: DATA PUT FILE id=%d", cf_socket->id);
fwrite(payload, 1, cf_packet->len, cf_socket->fp);
// xxx check result
}
else if (cf_socket->stdin_write)
{
// EXEC
DWORD result;
print_log(" EVENT HANDLE TYPE: DATA PUT EXEC id=%d", cf_socket->id);
WriteFile(cf_socket->stdin_write, payload, cf_packet->len, &result, NULL);
// xxx check result
}
else
print_log(" EVENT HANDLE DATA PUT ERROR: UNKNOWN TYPE id=%d", cf_socket->id);
}
else
print_log(" EVENT HANDLE DATA PUT ERROR: UNKNOWN ID id=%d", cf_packet->id);
break;
case CF_PACKET_DISCONNECT:
if ((cf_socket = cf_socket_find(cf_packet->id)))
{
if (cf_socket->hThread)
{
print_log(" EVENT HANDLE DISCONNECT: SET EVENT id=%d", cf_socket->id);
cf_socket->terminate = 1;
if (!SetEvent(cf_socket->hEvent))
log_socket_error(cf_socket, GetLastError(), "DISCONNECT SetEvent");
// CLOSE_HANDLE(cf_socket->stdout_read);
}
else
cf_socket->disconnect = 1;
}
else
print_log(" EVENT HANDLE DISCONNECT ERROR: UNKNOWN ID id=%d", cf_packet->id);
break;
case CF_PACKET_LOG:
// enable/disable logging
if (cf_packet->len && *((char *) PACKET_PAYLOAD(cf_packet)) != '0')
strcpy(log_file, ".\\cf-debug.log");
else
log_file[0] = 0;
break;
default:
print_log(" EVENT HANDLE WHOOPS ERROR: UKNOWN TYPE id=%d type=%d", cf_packet->id, cf_packet->type);
break;
}
print_log("EVENT HANDLE END id=%d", cf_packet->id);
return 1;
}
unsigned __stdcall cf_connect(LPVOID arg)
{
s_cf_socket *cf_socket = (s_cf_socket *) arg;
char buffer[MAX_BUFFER_SIZE];
int total_sent = 0;
int read_len = 0;
int select_count, result;
fd_set fd_list;
print_log("CONNECT ENTER id=%d, payload={%s}", cf_socket->id, cf_socket->payload);
for (;;)
{
// xxx set up fd_list before dp_select with cf_socket->socket
FD_ZERO(&fd_list);
FD_SET(cf_socket->socket, &fd_list);
if (!cf_socket->id || cf_socket->terminate || cf_socket->disconnect || !cf_socket->socket)
{
print_log(" CONNECT EXIT: TERMINATE SIGNAL RECEIVED id=%d", cf_socket->id);
break;
}
else if ((select_count = do_select(&fd_list, NULL, 10000, "local read wait")) < 0)
{
print_log(" CONNECT EXIT: SELECT ERROR id=%d", cf_socket->id);
break;
}
else if (select_count)
{
print_log("CONNECT READ: START id=%d", cf_socket->id);
if ((result = recv(cf_socket->socket, (char *) buffer, MAX_BUFFER_SIZE, 0)) <= 0)
{
cf_socket->disconnect = 1;
if (result < 0)
{
int error = WSAGetLastError(); // call here instead of in print_log to be 100% certain it is called first
print_log("CONNECT READ ERROR: recv id=%d, error=%d", cf_socket->id, error);
break;
}
}
else
{
if (ssl_pending(-1))
{
print_log("CONNECT READ ERROR: ssl_pending id=%d", cf_socket->id);
break;
}
else if (send_packet(cf_socket->id, CF_PACKET_DATA, buffer, result))
{
print_log("CONNECT READ ERROR: READ LOCAL SEND id=%d", cf_socket->id);
break;
}
else
cf_socket->send_count += read_len;
}
print_log("CONNECT READ: END id=%d", cf_socket->id);
}
SSL_CHECK;
disconnect_check();
}
print_log("CONNECT EXIT id=%d, sent=%d", cf_socket->id, total_sent);
cf_socket->terminate == 1 ?
(cf_socket->terminate = 2) :
(cf_socket->disconnect = 1);
return 0;
}
// Creating a Child Process with Redirected Input and Output
// http://msdn.microsoft.com/en-us/library/ms682499
// http://support.microsoft.com/kb/315939
unsigned __stdcall cf_exec(LPVOID arg)
{
s_cf_socket *cf_socket = (s_cf_socket *) arg;
STARTUPINFO sInfo;
PROCESS_INFORMATION pInfo;
SECURITY_ATTRIBUTES secat;
HANDLE stdin_read, stdout_write, stderr_write, stderr_read;
DWORD exit_code;
memset(&sInfo, 0, sizeof(STARTUPINFO));
memset(&pInfo, 0, sizeof(PROCESS_INFORMATION));
secat.nLength = sizeof(SECURITY_ATTRIBUTES);
secat.bInheritHandle = TRUE;
secat.lpSecurityDescriptor = NULL;
if (!CreatePipe(&stdin_read, &cf_socket->stdin_write, &secat, 0) && log_socket_error(cf_socket, GetLastError(), "EXEC PIPE1"))
return 1;
if (!CreatePipe(&cf_socket->stdout_read, &stdout_write, &secat, 0) && log_socket_error(cf_socket, GetLastError(), "EXEC PIPE2"))
{
CLOSE_HANDLE(cf_socket->stdout_read);
CLOSE_HANDLE(stdout_write);
return 1;
}
if (!CreatePipe(&stderr_read, &stderr_write, &secat, 0) && log_socket_error(cf_socket, GetLastError(), "EXEC PIPE3"))
{
CLOSE_HANDLE(cf_socket->stdout_read);
CLOSE_HANDLE(stdout_write);
CLOSE_HANDLE(cf_socket->stdin_write);
CLOSE_HANDLE(stdin_read);
return 1;
}
sInfo.cb = sizeof(sInfo);
sInfo.dwFlags = STARTF_USESTDHANDLES;
sInfo.hStdInput = stdin_read;
sInfo.hStdOutput = stdout_write;
sInfo.hStdError = stderr_write;
cf_token_replace(cf_socket->payload);
print_log("EXEC ENTER id=%d, payload={%s}", cf_socket->id, cf_socket->payload);
do
{
if (!CreateProcess(NULL, cf_socket->payload, NULL, NULL, TRUE, CREATE_DEFAULT_ERROR_MODE | HIGH_PRIORITY_CLASS, NULL, NULL, &sInfo, &cf_socket->procinfo))
{
log_socket_error(cf_socket, GetLastError(), "EXEC CreateProcess");
if (cf_socket->procinfo.hProcess && GetExitCodeProcess(cf_socket->procinfo.hProcess, &exit_code))
print_log("EXEC ERROR: CreateProcess (%s) ExitCode: %d", cf_socket->payload, exit_code);
break;
}
if (!AssignProcessToJobObject(job_obj, cf_socket->procinfo.hProcess))
{
log_socket_error(cf_socket, GetLastError(), "EXEC AssignProcessToJobObject");
break;
}
CLOSE_HANDLE(stdin_read);
CLOSE_HANDLE(stdout_write);
CLOSE_HANDLE(stderr_read);
CLOSE_HANDLE(stderr_write);
// xxx check errors on SetNamedPipeHandleState below!
DWORD pipe_mode = PIPE_READMODE_BYTE | PIPE_NOWAIT;
if (!SetNamedPipeHandleState(cf_socket->stdout_read, &pipe_mode, NULL, NULL))
log_socket_error(cf_socket, GetLastError(), "EXEC SetNamedPipeHandleState");
char buffer[MAX_BUFFER_SIZE];
DWORD kill = 1;
for (;;)
{
SleepEx(10, TRUE);
DWORD read_count, read_len;
int result = 0;
SSL_CHECK;
if (!PeekNamedPipe(cf_socket->stdout_read, NULL, 0, NULL, &read_count, NULL))
if (log_socket_error(cf_socket, GetLastError(), "EXEC PEEK"))
break;
if (read_count)
{
print_log(" EXEC PEEK DATA id=%d %d", cf_socket->id, read_count);
while (read_count > 0)
{
if (ReadFile(cf_socket->stdout_read, buffer, read_count < sizeof(buffer) ? read_count : sizeof(buffer), &read_len, NULL))
{
print_log(" EXEC READ DATA id=%d %d", cf_socket->id, read_len);
read_count -= read_len;
if (read_len > 0)
{
if (ssl_pending(-1))
{
print_log("EXEC READ ERROR: ssl_pending id=%d", cf_socket->id);
break;
}
else if ((result = send_packet(cf_socket->id, CF_PACKET_DATA, buffer, read_len)))
{
print_log(" EXEC ERROR BAD SEND PACKET id=%d", cf_socket->id);
log_socket_error(cf_socket, GetLastError(), "EXEC READ");
break;
}
else
cf_socket->send_count += read_len;
}
}
else
{
result = -1;
break;
}
}
if (result < 0)
break;
}
// xxx read stderr and send as log packets
if (cf_socket->terminate == 1)
{
print_log(" EXEC EXIT: TERMINATE 2 SIGNAL RECEIVED id=%d", cf_socket->id);
break;
}
if (WaitForSingleObject(cf_socket->hEvent, 0) == WAIT_OBJECT_0)
{
print_log(" EXEC EXIT: TERMINATE 1 SIGNAL RECEIVED id=%d", cf_socket->id);
break;
}
if (GetExitCodeProcess(cf_socket->procinfo.hProcess, &exit_code))
{
if (exit_code != STILL_ACTIVE)
{
kill = 0;
print_log(" EXEC: EXIT 1 id=%d %d", cf_socket->id, exit_code);
break;
}
if (WaitForSingleObject(cf_socket->procinfo.hProcess, 0) == WAIT_OBJECT_0)
{
kill = 0;
print_log(" EXEC: EXIT 2 id=%d %d", cf_socket->id, exit_code);
break;
}
}
else if (log_socket_error(cf_socket, GetLastError(), "EXEC GET EXIT CODE"))
break;
}
print_log(" EXEC LOOP END id=%d", cf_socket->id);
if (kill)
{
print_log(" EXEC KILL START id=%d", cf_socket->id);
if (TerminateProcess(cf_socket->procinfo.hProcess, 0))
{
print_log(" EXEC WAIT START id=%d", cf_socket->id);
WaitForSingleObject(cf_socket->procinfo.hProcess, INFINITE);
print_log(" EXEC WAIT END id=%d", cf_socket->id);
}
else
log_socket_error(cf_socket, GetLastError(), "EXEC TerminateProcess");
print_log(" EXEC KILL END id=%d", cf_socket->id);
}
CLOSE_HANDLE(cf_socket->procinfo.hProcess);
CLOSE_HANDLE(cf_socket->procinfo.hThread);
} while (0);
CLOSE_HANDLE(stdin_read);
CLOSE_HANDLE(cf_socket->stdin_write);
CLOSE_HANDLE(cf_socket->stdout_read);
CLOSE_HANDLE(stdout_write);
CLOSE_HANDLE(stderr_read);
CLOSE_HANDLE(stderr_write);
cf_socket->terminate == 1 ?
(cf_socket->terminate = 2) :
(cf_socket->disconnect = 1);
print_log("EXEC EXIT id=%d", cf_socket->id);
return 0;
}
unsigned __stdcall cf_file_read(LPVOID arg)
{
s_cf_socket *cf_socket = (s_cf_socket *) arg;
char buffer[MAX_BUFFER_SIZE];
int read_len = 0;
print_log("FILE ENTER id=%d, payload={%s}", cf_socket->id, cf_socket->payload);
for (;;)
{
print_log(" FILE LOOP START id=%d", cf_socket->id);
SSL_CHECK;
if (cf_socket->terminate == 1)
{
print_log(" FILE READ EXIT: TERMINATE SIGNAL RECEIVED id=%d", cf_socket->id);
break;
}
else if (!(read_len = fread(buffer, 1, MAX_BUFFER_SIZE, cf_socket->fp)))
{
print_log(" FILE READ: EOF id=%d", cf_socket->id);
break;
}
else if (ssl_pending(-1))
{
print_log("FILE READ ERROR: ssl_pending id=%d", cf_socket->id);
break;
}
else if (send_packet(cf_socket->id, CF_PACKET_DATA, buffer, read_len))
{
print_log(" FILE READ ERROR BAD SEND PACKET id=%d", cf_socket->id);
break;
}
else
cf_socket->send_count += read_len;
}
print_log("FILE EXIT id=%d sent=%d", cf_socket->id, cf_socket->send_count);
cf_socket->terminate == 1 ?
(cf_socket->terminate = 2)
:
(cf_socket->disconnect = 1);
return 0;
}
int send_buffer(int socket, const char *buf, int len)
{
int total_sent = 0;
int n = 0;
if (len < 0)
len = strlen(buf);
while (len > 0)
{
if (socket > 0)
{
if ((n = send(socket, buf + total_sent, len, 0)) < 0)
{
errno ?
print_log("failed to send_buffer data on socket id:%d, len=%d, errno=%d, errstr=%s", socket, len, errno, strerror(errno))
:
print_log("failed to send_buffer data on socket id:%d, len=%d", socket, len);
return -2;
}
}
else if ((n = ssl_write(buf + total_sent, len)) < 1)
{
print_log("SEND BUFFER SSL ERROR -4 len=%d", len);
return -11;
}
total_sent += n;
len -= n;
}
return 0;
}
void disconnect_check(void)
{
for (uint32_t i = 0; i <= cf_socket_idx; i++)
if (cf_socket_list[i])
if (cf_socket_list[i]->terminate == 2 || cf_socket_list[i]->disconnect || !cf_socket_list[i]->id)
disconnect(cf_socket_list[i]);
}
void disconnect(s_cf_socket *cf_socket)
{
print_log("DISCONNECT id=%d", cf_socket->id);
if (!cf_socket->id)
print_log("DISCONNECT ERROR: STRAY SOCKET id=%d", cf_socket->id);
else if (!cf_socket->terminate && !timeout)
{
print_log("DISCONNECT SEND TERMINATE id=%d", cf_socket->id);
if (send_packet(cf_socket->id, CF_PACKET_DISCONNECT, NULL, 0))
print_log("DISCONNECT SEND BUFFER ERROR id=%d", cf_socket->id);
}
cf_socket_free(cf_socket);
}
void cf_token_replace(char* str)
{
char SYSTEM32[MAX_BUFFER_SIZE] = "";
char WINDOWS[MAX_BUFFER_SIZE] = "";
GetSystemDirectory(SYSTEM32, MAX_BUFFER_SIZE);
GetWindowsDirectory(WINDOWS, MAX_BUFFER_SIZE);
str_token_replace(str, "%CFPATH%", cf_path);
str_token_replace(str, "%SYSTEM32%", SYSTEM32);
str_token_replace(str, "%WINDOWS%", WINDOWS);
}
void str_token_replace(char *str, char *token_str, char *replace_str)
{
int token_len, replace_len;
char *p, *q, *pp;
int token_count = 0;
q = str;
while ((q = strstr(q, token_str)))
{
token_count++;
q++;
}
if (!token_count)
return;
token_len = strlen(token_str);
replace_len = strlen(replace_str);
char *tmp = (char *) malloc(strlen(str) + (token_count * (replace_len - token_len)) + 1);
if (!tmp)
return;
char *qq = tmp;
q = str;
while ((p = strstr(q, token_str)) != NULL)
{
pp = qq + (p - q);
memcpy(qq, q, p - q);
memcpy(pp, replace_str, replace_len);
q = p + token_len;
qq = pp + replace_len;
}
memcpy(qq, q, strlen(str) - (q - str));
*((qq + strlen(str)) - (q - str)) = '\0';
strncpy(str, tmp, MAX_BUFFER_SIZE);
free(tmp);
}
SOCKET connect_socket(const char *host, const int port)
{
unsigned long address = inet_addr(host);
if (address == INADDR_NONE)
{
// host isn't a dotted IP, so resolve it through DNS
struct hostent *pHE = gethostbyname(host);
if (!pHE)
return INVALID_SOCKET;
address = *((u_long *) pHE->h_addr_list[0]);
}
print_log("CONNECT: START");
SOCKET sd = socket(AF_INET, SOCK_STREAM, 0);
if (sd != INVALID_SOCKET)
{
BOOL opt = 1;
int result = setsockopt(sd, IPPROTO_TCP, TCP_NODELAY, (char *) &opt, sizeof(BOOL));
if (result == SOCKET_ERROR)
{
int error = WSAGetLastError(); // call here instead of in print_log to be 100% certain it is called first
print_log("CONNECT: SETSOCKOPT ERROR %d", error);
}
struct sockaddr_in sinRemote;
sinRemote.sin_family = AF_INET;
sinRemote.sin_addr.s_addr = address;
sinRemote.sin_port = htons(port);
if (connect(sd, (struct sockaddr *) &sinRemote, sizeof(struct sockaddr_in)) == SOCKET_ERROR)
{
int error = WSAGetLastError(); // call here instead of in print_log to be 100% certain it is called first
print_log("CONNECT: ERROR %d", error);
close_socket(sd);
return INVALID_SOCKET;