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-rw-r--r--tools/plink/winproxy.c321
1 files changed, 94 insertions, 227 deletions
diff --git a/tools/plink/winproxy.c b/tools/plink/winproxy.c
index 7a8c7b69b..aa14b91ae 100644
--- a/tools/plink/winproxy.c
+++ b/tools/plink/winproxy.c
@@ -1,227 +1,94 @@
-/*
- * winproxy.c: Windows implementation of platform_new_connection(),
- * supporting an OpenSSH-like proxy command via the winhandl.c
- * mechanism.
- */
-
-#include <stdio.h>
-#include <assert.h>
-
-#define DEFINE_PLUG_METHOD_MACROS
-#include "tree234.h"
-#include "putty.h"
-#include "network.h"
-#include "proxy.h"
-
-typedef struct Socket_localproxy_tag *Local_Proxy_Socket;
-
-struct Socket_localproxy_tag {
- const struct socket_function_table *fn;
- /* the above variable absolutely *must* be the first in this structure */
-
- HANDLE to_cmd_H, from_cmd_H;
- struct handle *to_cmd_h, *from_cmd_h;
-
- char *error;
-
- Plug plug;
-
- void *privptr;
-};
-
-int localproxy_gotdata(struct handle *h, void *data, int len)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) handle_get_privdata(h);
-
- if (len < 0) {
- return plug_closing(ps->plug, "Read error from local proxy command",
- 0, 0);
- } else if (len == 0) {
- return plug_closing(ps->plug, NULL, 0, 0);
- } else {
- return plug_receive(ps->plug, 0, data, len);
- }
-}
-
-void localproxy_sentdata(struct handle *h, int new_backlog)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) handle_get_privdata(h);
-
- plug_sent(ps->plug, new_backlog);
-}
-
-static Plug sk_localproxy_plug (Socket s, Plug p)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
- Plug ret = ps->plug;
- if (p)
- ps->plug = p;
- return ret;
-}
-
-static void sk_localproxy_close (Socket s)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
-
- handle_free(ps->to_cmd_h);
- handle_free(ps->from_cmd_h);
- CloseHandle(ps->to_cmd_H);
- CloseHandle(ps->from_cmd_H);
-
- sfree(ps);
-}
-
-static int sk_localproxy_write (Socket s, const char *data, int len)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
-
- return handle_write(ps->to_cmd_h, data, len);
-}
-
-static int sk_localproxy_write_oob(Socket s, const char *data, int len)
-{
- /*
- * oob data is treated as inband; nasty, but nothing really
- * better we can do
- */
- return sk_localproxy_write(s, data, len);
-}
-
-static void sk_localproxy_write_eof(Socket s)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
-
- handle_write_eof(ps->to_cmd_h);
-}
-
-static void sk_localproxy_flush(Socket s)
-{
- /* Local_Proxy_Socket ps = (Local_Proxy_Socket) s; */
- /* do nothing */
-}
-
-static void sk_localproxy_set_private_ptr(Socket s, void *ptr)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
- ps->privptr = ptr;
-}
-
-static void *sk_localproxy_get_private_ptr(Socket s)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
- return ps->privptr;
-}
-
-static void sk_localproxy_set_frozen(Socket s, int is_frozen)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
-
- /*
- * FIXME
- */
-}
-
-static const char *sk_localproxy_socket_error(Socket s)
-{
- Local_Proxy_Socket ps = (Local_Proxy_Socket) s;
- return ps->error;
-}
-
-Socket platform_new_connection(SockAddr addr, char *hostname,
- int port, int privport,
- int oobinline, int nodelay, int keepalive,
- Plug plug, Conf *conf)
-{
- char *cmd;
-
- static const struct socket_function_table socket_fn_table = {
- sk_localproxy_plug,
- sk_localproxy_close,
- sk_localproxy_write,
- sk_localproxy_write_oob,
- sk_localproxy_write_eof,
- sk_localproxy_flush,
- sk_localproxy_set_private_ptr,
- sk_localproxy_get_private_ptr,
- sk_localproxy_set_frozen,
- sk_localproxy_socket_error
- };
-
- Local_Proxy_Socket ret;
- HANDLE us_to_cmd, us_from_cmd, cmd_to_us, cmd_from_us;
- SECURITY_ATTRIBUTES sa;
- STARTUPINFO si;
- PROCESS_INFORMATION pi;
-
- if (conf_get_int(conf, CONF_proxy_type) != PROXY_CMD)
- return NULL;
-
- cmd = format_telnet_command(addr, port, conf);
-
- {
- char *msg = dupprintf("Starting local proxy command: %s", cmd);
- /* We're allowed to pass NULL here, because we're part of the Windows
- * front end so we know logevent doesn't expect any data. */
- logevent(NULL, msg);
- sfree(msg);
- }
-
- ret = snew(struct Socket_localproxy_tag);
- ret->fn = &socket_fn_table;
- ret->plug = plug;
- ret->error = NULL;
-
- /*
- * Create the pipes to the proxy command, and spawn the proxy
- * command process.
- */
- sa.nLength = sizeof(sa);
- sa.lpSecurityDescriptor = NULL; /* default */
- sa.bInheritHandle = TRUE;
- if (!CreatePipe(&us_from_cmd, &cmd_to_us, &sa, 0)) {
- ret->error = dupprintf("Unable to create pipes for proxy command");
- return (Socket)ret;
- }
-
- if (!CreatePipe(&cmd_from_us, &us_to_cmd, &sa, 0)) {
- CloseHandle(us_from_cmd);
- CloseHandle(cmd_to_us);
- ret->error = dupprintf("Unable to create pipes for proxy command");
- return (Socket)ret;
- }
-
- SetHandleInformation(us_to_cmd, HANDLE_FLAG_INHERIT, 0);
- SetHandleInformation(us_from_cmd, HANDLE_FLAG_INHERIT, 0);
-
- si.cb = sizeof(si);
- si.lpReserved = NULL;
- si.lpDesktop = NULL;
- si.lpTitle = NULL;
- si.dwFlags = STARTF_USESTDHANDLES;
- si.cbReserved2 = 0;
- si.lpReserved2 = NULL;
- si.hStdInput = cmd_from_us;
- si.hStdOutput = cmd_to_us;
- si.hStdError = NULL;
- CreateProcess(NULL, cmd, NULL, NULL, TRUE,
- CREATE_NO_WINDOW | NORMAL_PRIORITY_CLASS,
- NULL, NULL, &si, &pi);
-
- sfree(cmd);
-
- CloseHandle(cmd_from_us);
- CloseHandle(cmd_to_us);
-
- ret->to_cmd_H = us_to_cmd;
- ret->from_cmd_H = us_from_cmd;
-
- ret->from_cmd_h = handle_input_new(ret->from_cmd_H, localproxy_gotdata,
- ret, 0);
- ret->to_cmd_h = handle_output_new(ret->to_cmd_H, localproxy_sentdata,
- ret, 0);
-
- /* We are responsible for this and don't need it any more */
- sk_addr_free(addr);
-
- return (Socket) ret;
-}
+/*
+ * winproxy.c: Windows implementation of platform_new_connection(),
+ * supporting an OpenSSH-like proxy command via the winhandl.c
+ * mechanism.
+ */
+
+#include <stdio.h>
+#include <assert.h>
+
+#define DEFINE_PLUG_METHOD_MACROS
+#include "tree234.h"
+#include "putty.h"
+#include "network.h"
+#include "proxy.h"
+
+Socket make_handle_socket(HANDLE send_H, HANDLE recv_H, Plug plug,
+ int overlapped);
+
+Socket platform_new_connection(SockAddr addr, char *hostname,
+ int port, int privport,
+ int oobinline, int nodelay, int keepalive,
+ Plug plug, Conf *conf)
+{
+ char *cmd;
+ HANDLE us_to_cmd, us_from_cmd, cmd_to_us, cmd_from_us;
+ SECURITY_ATTRIBUTES sa;
+ STARTUPINFO si;
+ PROCESS_INFORMATION pi;
+
+ if (conf_get_int(conf, CONF_proxy_type) != PROXY_CMD)
+ return NULL;
+
+ cmd = format_telnet_command(addr, port, conf);
+
+ /* We are responsible for this and don't need it any more */
+ sk_addr_free(addr);
+
+ {
+ char *msg = dupprintf("Starting local proxy command: %s", cmd);
+ /* We're allowed to pass NULL here, because we're part of the Windows
+ * front end so we know logevent doesn't expect any data. */
+ logevent(NULL, msg);
+ sfree(msg);
+ }
+
+ /*
+ * Create the pipes to the proxy command, and spawn the proxy
+ * command process.
+ */
+ sa.nLength = sizeof(sa);
+ sa.lpSecurityDescriptor = NULL; /* default */
+ sa.bInheritHandle = TRUE;
+ if (!CreatePipe(&us_from_cmd, &cmd_to_us, &sa, 0)) {
+ Socket ret =
+ new_error_socket("Unable to create pipes for proxy command", plug);
+ sfree(cmd);
+ return ret;
+ }
+
+ if (!CreatePipe(&cmd_from_us, &us_to_cmd, &sa, 0)) {
+ Socket ret =
+ new_error_socket("Unable to create pipes for proxy command", plug);
+ sfree(cmd);
+ CloseHandle(us_from_cmd);
+ CloseHandle(cmd_to_us);
+ return ret;
+ }
+
+ SetHandleInformation(us_to_cmd, HANDLE_FLAG_INHERIT, 0);
+ SetHandleInformation(us_from_cmd, HANDLE_FLAG_INHERIT, 0);
+
+ si.cb = sizeof(si);
+ si.lpReserved = NULL;
+ si.lpDesktop = NULL;
+ si.lpTitle = NULL;
+ si.dwFlags = STARTF_USESTDHANDLES;
+ si.cbReserved2 = 0;
+ si.lpReserved2 = NULL;
+ si.hStdInput = cmd_from_us;
+ si.hStdOutput = cmd_to_us;
+ si.hStdError = NULL;
+ CreateProcess(NULL, cmd, NULL, NULL, TRUE,
+ CREATE_NO_WINDOW | NORMAL_PRIORITY_CLASS,
+ NULL, NULL, &si, &pi);
+ CloseHandle(pi.hProcess);
+ CloseHandle(pi.hThread);
+
+ sfree(cmd);
+
+ CloseHandle(cmd_from_us);
+ CloseHandle(cmd_to_us);
+
+ return make_handle_socket(us_to_cmd, us_from_cmd, plug, FALSE);
+}
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