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1 | #include <windows.h> |
2 | #include <stdio.h> |
3 | #include <stdlib.h> |
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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 | |
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14 | static Socket s = NULL; |
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15 | |
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16 | static void raw_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 | |
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23 | static void c_write (char *buf, int len) { |
24 | from_backend(0, buf, len); |
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25 | } |
26 | |
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27 | static int raw_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; |
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33 | } |
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34 | c_write(data, len); |
35 | return 1; |
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36 | } |
37 | |
38 | /* |
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39 | * Called to set up the raw connection. |
40 | * |
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41 | * Returns an error message, or NULL on success. |
42 | * |
43 | * Also places the canonical host name into `realhost'. |
44 | */ |
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45 | static char *raw_init (char *host, int port, char **realhost) { |
46 | SockAddr addr; |
47 | char *err; |
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48 | |
49 | /* |
50 | * Try to find host. |
51 | */ |
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52 | addr = sk_namelookup(host, realhost); |
53 | if ( (err = sk_addr_error(addr)) ) |
54 | return err; |
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55 | |
56 | if (port < 0) |
57 | port = 23; /* default telnet port */ |
58 | |
59 | /* |
60 | * Open socket. |
61 | */ |
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62 | s = sk_new(addr, port, 0, raw_receive); |
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63 | if ( (err = sk_socket_error(s)) ) |
64 | return err; |
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65 | |
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66 | sk_addr_free(addr); |
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67 | |
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68 | /* |
69 | * We have no pre-session phase. |
70 | */ |
71 | begin_session(); |
72 | |
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73 | return NULL; |
74 | } |
75 | |
76 | /* |
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77 | * Called to send data down the raw connection. |
78 | */ |
79 | static void raw_send (char *buf, int len) { |
80 | |
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81 | if (s == NULL) |
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82 | return; |
83 | |
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84 | sk_write(s, buf, len); |
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85 | } |
86 | |
87 | /* |
88 | * Called to set the size of the window |
89 | */ |
90 | static void raw_size(void) { |
91 | /* Do nothing! */ |
92 | return; |
93 | } |
94 | |
95 | /* |
96 | * Send raw special codes. |
97 | */ |
98 | static void raw_special (Telnet_Special code) { |
99 | /* Do nothing! */ |
100 | return; |
101 | } |
102 | |
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103 | static Socket raw_socket(void) { return s; } |
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104 | |
105 | static int raw_sendok(void) { return 1; } |
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106 | |
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107 | Backend raw_backend = { |
108 | raw_init, |
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109 | raw_send, |
110 | raw_size, |
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111 | raw_special, |
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112 | raw_socket, |
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113 | raw_sendok, |
114 | 1 |
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115 | }; |