| 1 | #include <windows.h> |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | |
| 5 | #include "putty.h" |
| 6 | |
| 7 | #ifndef FALSE |
| 8 | #define FALSE 0 |
| 9 | #endif |
| 10 | #ifndef TRUE |
| 11 | #define TRUE 1 |
| 12 | #endif |
| 13 | |
| 14 | static Socket s = NULL; |
| 15 | |
| 16 | static void raw_size(void); |
| 17 | |
| 18 | static void c_write(char *buf, int len) |
| 19 | { |
| 20 | from_backend(0, buf, len); |
| 21 | } |
| 22 | |
| 23 | static int raw_closing(Plug plug, char *error_msg, int error_code, |
| 24 | int calling_back) |
| 25 | { |
| 26 | if (s) { |
| 27 | sk_close(s); |
| 28 | s = NULL; |
| 29 | } |
| 30 | if (error_msg) { |
| 31 | /* A socket error has occurred. */ |
| 32 | connection_fatal(error_msg); |
| 33 | } /* Otherwise, the remote side closed the connection normally. */ |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | static int raw_receive(Plug plug, int urgent, char *data, int len) |
| 38 | { |
| 39 | c_write(data, len); |
| 40 | return 1; |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | * Called to set up the raw connection. |
| 45 | * |
| 46 | * Returns an error message, or NULL on success. |
| 47 | * |
| 48 | * Also places the canonical host name into `realhost'. It must be |
| 49 | * freed by the caller. |
| 50 | */ |
| 51 | static char *raw_init(char *host, int port, char **realhost) |
| 52 | { |
| 53 | static struct plug_function_table fn_table = { |
| 54 | raw_closing, |
| 55 | raw_receive |
| 56 | }, *fn_table_ptr = &fn_table; |
| 57 | |
| 58 | SockAddr addr; |
| 59 | char *err; |
| 60 | |
| 61 | /* |
| 62 | * Try to find host. |
| 63 | */ |
| 64 | addr = sk_namelookup(host, realhost); |
| 65 | if ((err = sk_addr_error(addr))) |
| 66 | return err; |
| 67 | |
| 68 | if (port < 0) |
| 69 | port = 23; /* default telnet port */ |
| 70 | |
| 71 | /* |
| 72 | * Open socket. |
| 73 | */ |
| 74 | s = sk_new(addr, port, 0, 1, &fn_table_ptr); |
| 75 | if ((err = sk_socket_error(s))) |
| 76 | return err; |
| 77 | |
| 78 | sk_addr_free(addr); |
| 79 | |
| 80 | return NULL; |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | * Called to send data down the raw connection. |
| 85 | */ |
| 86 | static void raw_send(char *buf, int len) |
| 87 | { |
| 88 | |
| 89 | if (s == NULL) |
| 90 | return; |
| 91 | |
| 92 | sk_write(s, buf, len); |
| 93 | } |
| 94 | |
| 95 | /* |
| 96 | * Called to set the size of the window |
| 97 | */ |
| 98 | static void raw_size(void) |
| 99 | { |
| 100 | /* Do nothing! */ |
| 101 | return; |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * Send raw special codes. |
| 106 | */ |
| 107 | static void raw_special(Telnet_Special code) |
| 108 | { |
| 109 | /* Do nothing! */ |
| 110 | return; |
| 111 | } |
| 112 | |
| 113 | static Socket raw_socket(void) |
| 114 | { |
| 115 | return s; |
| 116 | } |
| 117 | |
| 118 | static int raw_sendok(void) |
| 119 | { |
| 120 | return 1; |
| 121 | } |
| 122 | |
| 123 | static int raw_ldisc(int option) |
| 124 | { |
| 125 | if (option == LD_EDIT || option == LD_ECHO) |
| 126 | return 1; |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | Backend raw_backend = { |
| 131 | raw_init, |
| 132 | raw_send, |
| 133 | raw_size, |
| 134 | raw_special, |
| 135 | raw_socket, |
| 136 | raw_sendok, |
| 137 | raw_ldisc, |
| 138 | 1 |
| 139 | }; |