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