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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_closing (Plug plug, char *error_msg, int error_code, int calling_back) { |
28 | sk_close(s); |
29 | s = NULL; |
30 | if (error_msg) { |
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31 | /* A socket error has occurred. */ |
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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) { |
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38 | c_write(data, len); |
39 | return 1; |
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40 | } |
41 | |
42 | /* |
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43 | * Called to set up the raw connection. |
44 | * |
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45 | * Returns an error message, or NULL on success. |
46 | * |
47 | * Also places the canonical host name into `realhost'. |
48 | */ |
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49 | static char *raw_init (char *host, int port, char **realhost) { |
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50 | static struct plug_function_table fn_table = { |
51 | raw_closing, |
52 | raw_receive |
53 | }, *fn_table_ptr = &fn_table; |
54 | |
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55 | SockAddr addr; |
56 | char *err; |
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57 | |
58 | /* |
59 | * Try to find host. |
60 | */ |
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61 | addr = sk_namelookup(host, realhost); |
62 | if ( (err = sk_addr_error(addr)) ) |
63 | return err; |
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64 | |
65 | if (port < 0) |
66 | port = 23; /* default telnet port */ |
67 | |
68 | /* |
69 | * Open socket. |
70 | */ |
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71 | s = sk_new(addr, port, 0, 1, &fn_table_ptr); |
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72 | if ( (err = sk_socket_error(s)) ) |
73 | return err; |
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74 | |
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75 | sk_addr_free(addr); |
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76 | |
77 | return NULL; |
78 | } |
79 | |
80 | /* |
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81 | * Called to send data down the raw connection. |
82 | */ |
83 | static void raw_send (char *buf, int len) { |
84 | |
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85 | if (s == NULL) |
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86 | return; |
87 | |
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88 | sk_write(s, buf, len); |
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89 | } |
90 | |
91 | /* |
92 | * Called to set the size of the window |
93 | */ |
94 | static void raw_size(void) { |
95 | /* Do nothing! */ |
96 | return; |
97 | } |
98 | |
99 | /* |
100 | * Send raw special codes. |
101 | */ |
102 | static void raw_special (Telnet_Special code) { |
103 | /* Do nothing! */ |
104 | return; |
105 | } |
106 | |
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107 | static Socket raw_socket(void) { return s; } |
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108 | |
109 | static int raw_sendok(void) { return 1; } |
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110 | |
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111 | static int raw_ldisc(int option) { |
112 | if (option == LD_EDIT || option == LD_ECHO) |
113 | return 1; |
114 | return 0; |
115 | } |
116 | |
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117 | Backend raw_backend = { |
118 | raw_init, |
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119 | raw_send, |
120 | raw_size, |
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121 | raw_special, |
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122 | raw_socket, |
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123 | raw_sendok, |
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124 | raw_ldisc, |
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125 | 1 |
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126 | }; |