| 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 rlogin_size(void); |
| 17 | |
| 18 | static int sb_opt, sb_len; |
| 19 | static char *sb_buf = NULL; |
| 20 | static int sb_size = 0; |
| 21 | #define SB_DELTA 1024 |
| 22 | |
| 23 | static void c_write (char *buf, int len) { |
| 24 | from_backend(0, buf, len); |
| 25 | } |
| 26 | |
| 27 | static int rlogin_receive (Socket s, int urgent, char *data, int len) { |
| 28 | if (!len) { |
| 29 | /* Connection has closed. */ |
| 30 | sk_close(s); |
| 31 | s = NULL; |
| 32 | return 0; |
| 33 | } |
| 34 | if (urgent == 2) { |
| 35 | char c; |
| 36 | int i; |
| 37 | |
| 38 | c = *data++; len--; |
| 39 | if (c == 0x80) |
| 40 | rlogin_size(); |
| 41 | /* |
| 42 | * We should flush everything (aka Telnet SYNCH) if we see |
| 43 | * 0x02, and we should turn off and on _local_ flow control |
| 44 | * on 0x10 and 0x20 respectively. I'm not convinced it's |
| 45 | * worth it... |
| 46 | */ |
| 47 | } |
| 48 | c_write(data, len); |
| 49 | return 1; |
| 50 | } |
| 51 | |
| 52 | /* |
| 53 | * Called to set up the rlogin connection. |
| 54 | * |
| 55 | * Returns an error message, or NULL on success. |
| 56 | * |
| 57 | * Also places the canonical host name into `realhost'. |
| 58 | */ |
| 59 | static char *rlogin_init (char *host, int port, char **realhost) { |
| 60 | SockAddr addr; |
| 61 | char *err; |
| 62 | |
| 63 | /* |
| 64 | * Try to find host. |
| 65 | */ |
| 66 | addr = sk_namelookup(host, realhost); |
| 67 | if ( (err = sk_addr_error(addr)) ) |
| 68 | return err; |
| 69 | |
| 70 | if (port < 0) |
| 71 | port = 513; /* default rlogin port */ |
| 72 | |
| 73 | /* |
| 74 | * Open socket. |
| 75 | */ |
| 76 | s = sk_new(addr, port, 1, rlogin_receive); |
| 77 | if ( (err = sk_socket_error(s)) ) |
| 78 | return err; |
| 79 | |
| 80 | sk_addr_free(addr); |
| 81 | |
| 82 | /* |
| 83 | * Send local username, remote username, terminal/speed |
| 84 | */ |
| 85 | |
| 86 | { |
| 87 | char z = 0; |
| 88 | char *p; |
| 89 | sk_write(s, &z, 1); |
| 90 | sk_write(s, cfg.localusername, strlen(cfg.localusername)); |
| 91 | sk_write(s, &z, 1); |
| 92 | sk_write(s, cfg.username, strlen(cfg.username)); |
| 93 | sk_write(s, &z, 1); |
| 94 | sk_write(s, cfg.termtype, strlen(cfg.termtype)); |
| 95 | sk_write(s, "/", 1); |
| 96 | for(p = cfg.termspeed; isdigit(*p); p++); |
| 97 | sk_write(s, cfg.termspeed, p - cfg.termspeed); |
| 98 | sk_write(s, &z, 1); |
| 99 | } |
| 100 | |
| 101 | begin_session(); |
| 102 | |
| 103 | return NULL; |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | * Called to send data down the rlogin connection. |
| 108 | */ |
| 109 | static void rlogin_send (char *buf, int len) { |
| 110 | |
| 111 | if (s == NULL) |
| 112 | return; |
| 113 | |
| 114 | sk_write(s, buf, len); |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Called to set the size of the window |
| 119 | */ |
| 120 | static void rlogin_size(void) { |
| 121 | char b[12] = { 0xFF, 0xFF, 0x73, 0x73, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 122 | |
| 123 | b[6] = cols >> 8; b[7] = cols & 0xFF; |
| 124 | b[4] = rows >> 8; b[5] = rows & 0xFF; |
| 125 | sk_write(s, b, 12); |
| 126 | return; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Send rlogin special codes. |
| 131 | */ |
| 132 | static void rlogin_special (Telnet_Special code) { |
| 133 | /* Do nothing! */ |
| 134 | return; |
| 135 | } |
| 136 | |
| 137 | static Socket rlogin_socket(void) { return s; } |
| 138 | |
| 139 | static int rlogin_sendok(void) { return 1; } |
| 140 | |
| 141 | Backend rlogin_backend = { |
| 142 | rlogin_init, |
| 143 | rlogin_send, |
| 144 | rlogin_size, |
| 145 | rlogin_special, |
| 146 | rlogin_socket, |
| 147 | rlogin_sendok, |
| 148 | 1 |
| 149 | }; |