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