* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
+ * are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
/* Purpose
*
- * 1. Accept a TCP connection on a custom port (ipv4 or ipv6), or connect
+ * 1. Accept a TCP connection on a custom port (IPv4 or IPv6), or connect
* to a given (localhost) port.
*
* 2. Get commands on STDIN. Pass data on to the TCP stream.
*
* This program is a single-threaded process.
*
- * This program is intended to be highly portable and as such it must be kept as
- * simple as possible, due to this the only signal handling mechanisms used will
- * be those of ANSI C, and used only in the most basic form which is good enough
- * for the purpose of this program.
+ * This program is intended to be highly portable and as such it must be kept
+ * as simple as possible, due to this the only signal handling mechanisms used
+ * will be those of ANSI C, and used only in the most basic form which is good
+ * enough for the purpose of this program.
*
* For the above reason and the specific needs of this program signals SIGHUP,
- * SIGPIPE and SIGALRM will be simply ignored on systems where this can be done.
- * If possible, signals SIGINT and SIGTERM will be handled by this program as an
- * indication to cleanup and finish execution as soon as possible. This will be
- * achieved with a single signal handler 'exit_signal_handler' for both signals.
+ * SIGPIPE and SIGALRM will be simply ignored on systems where this can be
+ * done. If possible, signals SIGINT and SIGTERM will be handled by this
+ * program as an indication to cleanup and finish execution as soon as
+ * possible. This will be achieved with a single signal handler
+ * 'exit_signal_handler' for both signals.
*
* The 'exit_signal_handler' upon the first SIGINT or SIGTERM received signal
* will just set to one the global var 'got_exit_signal' storing in global var
* 'exit_signal' the signal that triggered this change.
*
* Nothing fancy that could introduce problems is used, the program at certain
- * points in its normal flow checks if var 'got_exit_signal' is set and in case
- * this is true it just makes its way out of loops and functions in structured
- * and well behaved manner to achieve proper program cleanup and termination.
+ * points in its normal flow checks if var 'got_exit_signal' is set and in
+ * case this is true it just makes its way out of loops and functions in
+ * structured and well behaved manner to achieve proper program cleanup and
+ * termination.
*
- * Even with the above mechanism implemented it is worthwile to note that other
- * signals might still be received, or that there might be systems on which it
- * is not possible to trap and ignore some of the above signals. This implies
- * that for increased portability and reliability the program must be coded as
- * if no signal was being ignored or handled at all. Enjoy it!
+ * Even with the above mechanism implemented it is worthwile to note that
+ * other signals might still be received, or that there might be systems on
+ * which it is not possible to trap and ignore some of the above signals.
+ * This implies that for increased portability and reliability the program
+ * must be coded as if no signal was being ignored or handled at all. Enjoy
+ * it!
*/
#ifdef HAVE_SIGNAL_H
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
+#ifdef HAVE_NETINET_IN6_H
+#include <netinet/in6.h>
+#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
{
#ifdef SIGHUP
/* ignore SIGHUP signal */
- if((old_sighup_handler = signal(SIGHUP, SIG_IGN)) == SIG_ERR)
+ old_sighup_handler = signal(SIGHUP, SIG_IGN);
+ if(old_sighup_handler == SIG_ERR)
logmsg("cannot install SIGHUP handler: %s", strerror(errno));
#endif
#ifdef SIGPIPE
/* ignore SIGPIPE signal */
- if((old_sigpipe_handler = signal(SIGPIPE, SIG_IGN)) == SIG_ERR)
+ old_sigpipe_handler = signal(SIGPIPE, SIG_IGN);
+ if(old_sigpipe_handler == SIG_ERR)
logmsg("cannot install SIGPIPE handler: %s", strerror(errno));
#endif
#ifdef SIGALRM
/* ignore SIGALRM signal */
- if((old_sigalrm_handler = signal(SIGALRM, SIG_IGN)) == SIG_ERR)
+ old_sigalrm_handler = signal(SIGALRM, SIG_IGN);
+ if(old_sigalrm_handler == SIG_ERR)
logmsg("cannot install SIGALRM handler: %s", strerror(errno));
#endif
#ifdef SIGINT
/* handle SIGINT signal with our exit_signal_handler */
- if((old_sigint_handler = signal(SIGINT, exit_signal_handler)) == SIG_ERR)
+ old_sigint_handler = signal(SIGINT, exit_signal_handler);
+ if(old_sigint_handler == SIG_ERR)
logmsg("cannot install SIGINT handler: %s", strerror(errno));
else
siginterrupt(SIGINT, 1);
#endif
#ifdef SIGTERM
/* handle SIGTERM signal with our exit_signal_handler */
- if((old_sigterm_handler = signal(SIGTERM, exit_signal_handler)) == SIG_ERR)
+ old_sigterm_handler = signal(SIGTERM, exit_signal_handler);
+ if(old_sigterm_handler == SIG_ERR)
logmsg("cannot install SIGTERM handler: %s", strerror(errno));
else
siginterrupt(SIGTERM, 1);
#endif
#if defined(SIGBREAK) && defined(WIN32)
/* handle SIGBREAK signal with our exit_signal_handler */
- if((old_sigbreak_handler = signal(SIGBREAK, exit_signal_handler)) == SIG_ERR)
+ old_sigbreak_handler = signal(SIGBREAK, exit_signal_handler);
+ if(old_sigbreak_handler == SIG_ERR)
logmsg("cannot install SIGBREAK handler: %s", strerror(errno));
else
siginterrupt(SIGBREAK, 1);
}
if(GetConsoleMode(handle, &mode)) {
- success = ReadConsole(handle, buf, count, &rcount, NULL);
+ success = ReadConsole(handle, buf, curlx_uztoul(count), &rcount, NULL);
}
else {
- success = ReadFile(handle, buf, count, &rcount, NULL);
+ success = ReadFile(handle, buf, curlx_uztoul(count), &rcount, NULL);
}
if(success) {
return rcount;
}
if(GetConsoleMode(handle, &mode)) {
- success = WriteConsole(handle, buf, count, &wcount, NULL);
+ success = WriteConsole(handle, buf, curlx_uztoul(count), &wcount, NULL);
}
else {
- success = WriteFile(handle, buf, count, &wcount, NULL);
+ success = WriteFile(handle, buf, curlx_uztoul(count), &wcount, NULL);
}
if(success) {
return wcount;
ssize_t nwrite = 0;
do {
- wc = write(filedes, (unsigned char *)buffer + nwrite, nbytes - nwrite);
+ wc = write(filedes, (const unsigned char *)buffer + nwrite,
+ nbytes - nwrite);
if(got_exit_signal) {
logmsg("signalled to die");
ssize_t i;
unsigned char *ptr = buffer;
char *optr = data;
- ssize_t width=0;
+ ssize_t width = 0;
+ int left = sizeof(data);
- for(i=0; i<len; i++) {
+ for(i = 0; i<len; i++) {
switch(ptr[i]) {
case '\n':
- sprintf(optr, "\\n");
+ snprintf(optr, left, "\\n");
width += 2;
optr += 2;
+ left -= 2;
break;
case '\r':
- sprintf(optr, "\\r");
+ snprintf(optr, left, "\\r");
width += 2;
optr += 2;
+ left -= 2;
break;
default:
- sprintf(optr, "%c", (ISGRAPH(ptr[i]) || ptr[i]==0x20) ?ptr[i]:'.');
+ snprintf(optr, left, "%c", (ISGRAPH(ptr[i]) ||
+ ptr[i] == 0x20) ?ptr[i]:'.');
width++;
optr++;
+ left--;
break;
}
logmsg("'%s'", data);
width = 0;
optr = data;
+ left = sizeof(data);
}
}
if(width)
* other handle types supported by WaitForMultipleObjectsEx() as
* well as disk files, anonymous and names pipes, and character input.
*
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms687028.aspx
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms741572.aspx
+ * https://msdn.microsoft.com/en-us/library/windows/desktop/ms687028.aspx
+ * https://msdn.microsoft.com/en-us/library/windows/desktop/ms741572.aspx
*/
struct select_ws_wait_data {
HANDLE handle; /* actual handle to wait for during select */
free(data);
}
else
- return -1;
+ return (DWORD)-1;
/* retrieve the type of file to wait on */
type = GetFileType(handle);
* Approach: Loop till either the internal event is signalled
* or if the end of the file has already been reached.
*/
- while(WaitForMultipleObjectsEx(2, handles, FALSE, INFINITE, FALSE)
- == WAIT_OBJECT_0 + 1) {
+ while(WaitForMultipleObjectsEx(1, handles, FALSE, 0, FALSE)
+ == WAIT_TIMEOUT) {
/* get total size of file */
+ length = 0;
size.QuadPart = 0;
- if(GetFileSizeEx(handle, &size)) {
+ size.LowPart = GetFileSize(handle, &length);
+ if((size.LowPart != INVALID_FILE_SIZE) ||
+ (GetLastError() == NO_ERROR)) {
+ size.HighPart = length;
/* get the current position within the file */
pos.QuadPart = 0;
- if(SetFilePointerEx(handle, pos, &pos, FILE_CURRENT)) {
+ pos.LowPart = SetFilePointer(handle, 0, &pos.HighPart,
+ FILE_CURRENT);
+ if((pos.LowPart != INVALID_SET_FILE_POINTER) ||
+ (GetLastError() == NO_ERROR)) {
/* compare position with size, abort if not equal */
if(size.QuadPart == pos.QuadPart) {
/* sleep and continue waiting */
- SleepEx(100, FALSE);
+ SleepEx(0, FALSE);
continue;
}
}
while(WaitForMultipleObjectsEx(2, handles, FALSE, INFINITE, FALSE)
== WAIT_OBJECT_0 + 1) {
/* check if this is an actual console handle */
+ length = 0;
if(GetConsoleMode(handle, &length)) {
/* retrieve an event from the console buffer */
length = 0;
* Approach: Loop till either the internal event is signalled
* or there is data in the pipe available for reading.
*/
- while(WaitForMultipleObjectsEx(2, handles, FALSE, INFINITE, FALSE)
- == WAIT_OBJECT_0 + 1) {
+ while(WaitForMultipleObjectsEx(1, handles, FALSE, 0, FALSE)
+ == WAIT_TIMEOUT) {
/* peek into the pipe and retrieve the amount of data available */
+ length = 0;
if(PeekNamedPipe(handle, NULL, 0, NULL, &length, NULL)) {
/* if there is no data available, sleep and continue waiting */
if(length == 0) {
- SleepEx(100, FALSE);
+ SleepEx(0, FALSE);
continue;
}
}
else {
/* if the pipe has been closed, sleep and continue waiting */
if(GetLastError() == ERROR_BROKEN_PIPE) {
- SleepEx(100, FALSE);
+ SleepEx(0, FALSE);
continue;
}
}
return thread;
}
+struct select_ws_data {
+ curl_socket_t fd; /* the original input handle (indexed by fds) */
+ curl_socket_t wsasock; /* the internal socket handle (indexed by wsa) */
+ WSAEVENT wsaevent; /* the internal WINSOCK2 event (indexed by wsa) */
+ HANDLE thread; /* the internal threads handle (indexed by thd) */
+};
static int select_ws(int nfds, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, struct timeval *timeout)
{
DWORD milliseconds, wait, idx;
- WSAEVENT wsaevent, *wsaevents;
WSANETWORKEVENTS wsanetevents;
- HANDLE handle, *handles, *threads;
- curl_socket_t sock, *fdarr, *wsasocks;
+ struct select_ws_data *data;
+ HANDLE handle, *handles;
+ curl_socket_t sock;
long networkevents;
+ WSAEVENT wsaevent;
int error, fds;
HANDLE waitevent = NULL;
DWORD nfd = 0, thd = 0, wsa = 0;
/* check if we got descriptors, sleep in case we got none */
if(!nfds) {
- Sleep((timeout->tv_sec * 1000) + (timeout->tv_usec / 1000));
+ Sleep((timeout->tv_sec*1000)+(DWORD)(((double)timeout->tv_usec)/1000.0));
return 0;
}
return -1;
}
- /* allocate internal array for the original input handles */
- fdarr = malloc(nfds * sizeof(curl_socket_t));
- if(fdarr == NULL) {
+ /* allocate internal array for the internal data */
+ data = malloc(nfds * sizeof(struct select_ws_data));
+ if(data == NULL) {
errno = ENOMEM;
return -1;
}
/* allocate internal array for the internal event handles */
handles = malloc(nfds * sizeof(HANDLE));
if(handles == NULL) {
- free(fdarr);
- errno = ENOMEM;
- return -1;
- }
-
- /* allocate internal array for the internal threads handles */
- threads = malloc(nfds * sizeof(HANDLE));
- if(threads == NULL) {
- free(handles);
- free(fdarr);
- errno = ENOMEM;
- return -1;
- }
-
- /* allocate internal array for the internal socket handles */
- wsasocks = malloc(nfds * sizeof(curl_socket_t));
- if(wsasocks == NULL) {
- free(threads);
- free(handles);
- free(fdarr);
+ free(data);
errno = ENOMEM;
return -1;
}
- /* allocate internal array for the internal WINSOCK2 events */
- wsaevents = malloc(nfds * sizeof(WSAEVENT));
- if(wsaevents == NULL) {
- free(threads);
- free(wsasocks);
- free(handles);
- free(fdarr);
- errno = ENOMEM;
- return -1;
- }
+ /* clear internal arrays */
+ memset(data, 0, nfds * sizeof(struct select_ws_data));
+ memset(handles, 0, nfds * sizeof(HANDLE));
/* loop over the handles in the input descriptor sets */
for(fds = 0; fds < nfds; fds++) {
/* only wait for events for which we actually care */
if(networkevents) {
- fdarr[nfd] = curlx_sitosk(fds);
+ data[nfd].fd = curlx_sitosk(fds);
if(fds == fileno(stdin)) {
handle = GetStdHandle(STD_INPUT_HANDLE);
handle = select_ws_wait(handle, waitevent);
handles[nfd] = handle;
- threads[thd] = handle;
+ data[thd].thread = handle;
thd++;
}
else if(fds == fileno(stdout)) {
if(error != SOCKET_ERROR) {
handle = (HANDLE) wsaevent;
handles[nfd] = handle;
- wsasocks[wsa] = curlx_sitosk(fds);
- wsaevents[wsa] = wsaevent;
+ data[wsa].wsasock = curlx_sitosk(fds);
+ data[wsa].wsaevent = wsaevent;
wsa++;
}
else {
handle = (HANDLE) curlx_sitosk(fds);
handle = select_ws_wait(handle, waitevent);
handles[nfd] = handle;
- threads[thd] = handle;
+ data[thd].thread = handle;
thd++;
}
}
/* loop over the internal handles returned in the descriptors */
for(idx = 0; idx < nfd; idx++) {
handle = handles[idx];
- sock = fdarr[idx];
+ sock = data[idx].fd;
fds = curlx_sktosi(sock);
/* check if the current internal handle was triggered */
}
}
+ for(fds = 0; fds < nfds; fds++) {
+ if(FD_ISSET(fds, readfds))
+ logmsg("select_ws: %d is readable", fds);
+
+ if(FD_ISSET(fds, writefds))
+ logmsg("select_ws: %d is writable", fds);
+
+ if(FD_ISSET(fds, exceptfds))
+ logmsg("select_ws: %d is excepted", fds);
+ }
+
for(idx = 0; idx < wsa; idx++) {
- WSAEventSelect(wsasocks[idx], NULL, 0);
- WSACloseEvent(wsaevents[idx]);
+ WSAEventSelect(data[idx].wsasock, NULL, 0);
+ WSACloseEvent(data[idx].wsaevent);
}
for(idx = 0; idx < thd; idx++) {
- WaitForSingleObject(threads[thd], INFINITE);
- CloseHandle(threads[thd]);
+ WaitForSingleObject(data[idx].thread, INFINITE);
+ CloseHandle(data[idx].thread);
}
CloseHandle(waitevent);
- free(wsaevents);
- free(wsasocks);
- free(threads);
free(handles);
- free(fdarr);
+ free(data);
return ret;
}
Commands:
- DATA - plain pass-thru data
+ DATA - plain pass-through data
*/
if(!read_stdin(buffer, 5))
return FALSE;
logmsg("Received %c%c%c%c (on stdin)",
- buffer[0], buffer[1], buffer[2], buffer[3] );
+ buffer[0], buffer[1], buffer[2], buffer[3]);
if(!memcmp("PING", buffer, 4)) {
/* send reply on stdout, just proving we are alive */
else if(!memcmp("PORT", buffer, 4)) {
/* Question asking us what PORT number we are listening to.
Replies to PORT with "IPv[num]/[port]" */
- sprintf((char *)buffer, "%s/%hu\n", ipv_inuse, port);
+ snprintf((char *)buffer, sizeof(buffer), "%s/%hu\n", ipv_inuse, port);
buffer_len = (ssize_t)strlen((char *)buffer);
snprintf(data, sizeof(data), "PORT\n%04zx\n", buffer_len);
if(!write_stdout(data, 10))
buffer[5] = '\0';
buffer_len = (ssize_t)strtol((char *)buffer, NULL, 16);
- if (buffer_len > (ssize_t)sizeof(buffer)) {
+ if(buffer_len > (ssize_t)sizeof(buffer)) {
logmsg("ERROR: Buffer size (%zu bytes) too small for data size "
"(%zd bytes)", sizeof(buffer), buffer_len);
return FALSE;
int rc;
int totdelay = 0;
int maxretr = 10;
- int delay= 20;
+ int delay = 20;
int attempt = 0;
int error = 0;
sclose(sock);
return CURL_SOCKET_BAD;
}
- switch (localaddr.sa.sa_family) {
+ switch(localaddr.sa.sa_family) {
case AF_INET:
*listenport = ntohs(localaddr.sa4.sin_port);
break;
curl_socket_t sock = CURL_SOCKET_BAD;
curl_socket_t msgsock = CURL_SOCKET_BAD;
int wrotepidfile = 0;
- char *pidname= (char *)".sockfilt.pid";
+ const char *pidname = ".sockfilt.pid";
bool juggle_again;
int rc;
int error;
- int arg=1;
+ int arg = 1;
enum sockmode mode = PASSIVE_LISTEN; /* default */
const char *addr = NULL;
me.sa4.sin_family = AF_INET;
me.sa4.sin_port = htons(connectport);
me.sa4.sin_addr.s_addr = INADDR_ANY;
- if (!addr)
+ if(!addr)
addr = "127.0.0.1";
Curl_inet_pton(AF_INET, addr, &me.sa4.sin_addr);
memset(&me.sa6, 0, sizeof(me.sa6));
me.sa6.sin6_family = AF_INET6;
me.sa6.sin6_port = htons(connectport);
- if (!addr)
+ if(!addr)
addr = "::1";
Curl_inet_pton(AF_INET6, addr, &me.sa6.sin6_addr);
projects / platform / upstream / curl.git / blobdiff