c91409da |
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) { |
2c94fd1c |
28 | if (urgent==3) { |
29 | /* A socket error has occurred. */ |
30 | connection_fatal(data); |
31 | len = 0; |
32 | } |
c91409da |
33 | if (!len) { |
34 | /* Connection has closed. */ |
35 | sk_close(s); |
36 | s = NULL; |
37 | return 0; |
38 | } |
39 | if (urgent == 2) { |
40 | char c; |
c91409da |
41 | |
42 | c = *data++; len--; |
43 | if (c == 0x80) |
44 | rlogin_size(); |
45 | /* |
46 | * We should flush everything (aka Telnet SYNCH) if we see |
47 | * 0x02, and we should turn off and on _local_ flow control |
48 | * on 0x10 and 0x20 respectively. I'm not convinced it's |
49 | * worth it... |
50 | */ |
51 | } |
52 | c_write(data, len); |
53 | return 1; |
54 | } |
55 | |
56 | /* |
57 | * Called to set up the rlogin connection. |
58 | * |
59 | * Returns an error message, or NULL on success. |
60 | * |
61 | * Also places the canonical host name into `realhost'. |
62 | */ |
63 | static char *rlogin_init (char *host, int port, char **realhost) { |
64 | SockAddr addr; |
65 | char *err; |
66 | |
67 | /* |
68 | * Try to find host. |
69 | */ |
70 | addr = sk_namelookup(host, realhost); |
71 | if ( (err = sk_addr_error(addr)) ) |
72 | return err; |
73 | |
74 | if (port < 0) |
75 | port = 513; /* default rlogin port */ |
76 | |
77 | /* |
78 | * Open socket. |
79 | */ |
80 | s = sk_new(addr, port, 1, rlogin_receive); |
81 | if ( (err = sk_socket_error(s)) ) |
82 | return err; |
83 | |
84 | sk_addr_free(addr); |
85 | |
86 | /* |
87 | * Send local username, remote username, terminal/speed |
88 | */ |
89 | |
90 | { |
91 | char z = 0; |
92 | char *p; |
93 | sk_write(s, &z, 1); |
94 | sk_write(s, cfg.localusername, strlen(cfg.localusername)); |
95 | sk_write(s, &z, 1); |
96 | sk_write(s, cfg.username, strlen(cfg.username)); |
97 | sk_write(s, &z, 1); |
98 | sk_write(s, cfg.termtype, strlen(cfg.termtype)); |
99 | sk_write(s, "/", 1); |
100 | for(p = cfg.termspeed; isdigit(*p); p++); |
101 | sk_write(s, cfg.termspeed, p - cfg.termspeed); |
102 | sk_write(s, &z, 1); |
103 | } |
104 | |
105 | begin_session(); |
106 | |
107 | return NULL; |
108 | } |
109 | |
110 | /* |
111 | * Called to send data down the rlogin connection. |
112 | */ |
113 | static void rlogin_send (char *buf, int len) { |
114 | |
115 | if (s == NULL) |
116 | return; |
117 | |
118 | sk_write(s, buf, len); |
119 | } |
120 | |
121 | /* |
122 | * Called to set the size of the window |
123 | */ |
124 | static void rlogin_size(void) { |
e418595a |
125 | char b[12] = { '\xFF', '\xFF', 0x73, 0x73, 0, 0, 0, 0, 0, 0, 0, 0 }; |
c91409da |
126 | |
127 | b[6] = cols >> 8; b[7] = cols & 0xFF; |
128 | b[4] = rows >> 8; b[5] = rows & 0xFF; |
129 | sk_write(s, b, 12); |
130 | return; |
131 | } |
132 | |
133 | /* |
134 | * Send rlogin special codes. |
135 | */ |
136 | static void rlogin_special (Telnet_Special code) { |
137 | /* Do nothing! */ |
138 | return; |
139 | } |
140 | |
141 | static Socket rlogin_socket(void) { return s; } |
142 | |
143 | static int rlogin_sendok(void) { return 1; } |
144 | |
145 | Backend rlogin_backend = { |
146 | rlogin_init, |
147 | rlogin_send, |
148 | rlogin_size, |
149 | rlogin_special, |
150 | rlogin_socket, |
151 | rlogin_sendok, |
152 | 1 |
153 | }; |