Improve socket error handling so that a socket error isn't an
[u/mdw/putty] / putty.h
1 #ifndef PUTTY_PUTTY_H
2 #define PUTTY_PUTTY_H
3
4 #include "network.h"
5
6 #define PUTTY_REG_POS "Software\\SimonTatham\\PuTTY"
7 #define PUTTY_REG_PARENT "Software\\SimonTatham"
8 #define PUTTY_REG_PARENT_CHILD "PuTTY"
9 #define PUTTY_REG_GPARENT "Software"
10 #define PUTTY_REG_GPARENT_CHILD "SimonTatham"
11
12 /*
13 * Global variables. Most modules declare these `extern', but
14 * window.c will do `#define PUTTY_DO_GLOBALS' before including this
15 * module, and so will get them properly defined.
16 */
17 #ifdef PUTTY_DO_GLOBALS
18 #define GLOBAL
19 #else
20 #define GLOBAL extern
21 #endif
22
23 #define ATTR_ACTCURS 0x80000000UL /* active cursor (block) */
24 #define ATTR_PASCURS 0x40000000UL /* passive cursor (box) */
25 #define ATTR_INVALID 0x20000000UL
26 #define ATTR_WRAPPED 0x10000000UL
27 #define ATTR_RIGHTCURS 0x10000000UL /* doubles as cursor-on-RHS indicator */
28
29 #define LATTR_NORM 0x00000000UL
30 #define LATTR_WIDE 0x01000000UL
31 #define LATTR_TOP 0x02000000UL
32 #define LATTR_BOT 0x03000000UL
33 #define LATTR_MODE 0x03000000UL
34
35 #define ATTR_ASCII 0x00000000UL /* normal ASCII charset ESC ( B */
36 #define ATTR_GBCHR 0x00100000UL /* UK variant charset ESC ( A */
37 #define ATTR_LINEDRW 0x00200000UL /* line drawing charset ESC ( 0 */
38
39 #define ATTR_BOLD 0x00000100UL
40 #define ATTR_UNDER 0x00000200UL
41 #define ATTR_REVERSE 0x00000400UL
42 #define ATTR_BLINK 0x00000800UL
43 #define ATTR_FGMASK 0x0000F000UL
44 #define ATTR_BGMASK 0x000F0000UL
45 #define ATTR_FGSHIFT 12
46 #define ATTR_BGSHIFT 16
47
48 #define ATTR_DEFAULT 0x00098000UL
49 #define ATTR_DEFFG 0x00008000UL
50 #define ATTR_DEFBG 0x00090000UL
51 #define ATTR_CUR_XOR 0x000BA000UL
52 #define ERASE_CHAR (ATTR_DEFAULT | ' ')
53 #define ATTR_MASK 0xFFFFFF00UL
54 #define CHAR_MASK 0x000000FFUL
55
56 typedef HDC Context;
57 #define SEL_NL { 13, 10 }
58
59 GLOBAL int rows, cols, savelines;
60
61 GLOBAL int font_width, font_height;
62
63 #define INBUF_SIZE 2048
64 GLOBAL unsigned char inbuf[INBUF_SIZE];
65 GLOBAL int inbuf_head;
66
67 #define OUTBUF_SIZE 2048
68 #define OUTBUF_MASK (OUTBUF_SIZE-1)
69 GLOBAL unsigned char outbuf[OUTBUF_SIZE];
70 GLOBAL int outbuf_head, outbuf_reap;
71
72 GLOBAL int has_focus;
73
74 GLOBAL int app_cursor_keys, app_keypad_keys, vt52_mode;
75 GLOBAL int repeat_off, cr_lf_return;
76
77 GLOBAL int seen_key_event;
78 GLOBAL int seen_disp_event;
79
80 GLOBAL int session_closed;
81
82 #define LGTYP_NONE 0 /* logmode: no logging */
83 #define LGTYP_ASCII 1 /* logmode: pure ascii */
84 #define LGTYP_DEBUG 2 /* logmode: all chars of taffic */
85 GLOBAL char *logfile;
86
87 /*
88 * Window handles for the dialog boxes that can be running during a
89 * PuTTY session.
90 */
91 GLOBAL HWND logbox;
92
93 /*
94 * I've just looked in the windows standard headr files for WM_USER, there
95 * are hundreds of flags defined using the form WM_USER+123 so I've
96 * renumbered this NETEVENT value and the two in window.c
97 */
98 #define WM_XUSER (WM_USER + 0x2000)
99 #define WM_NETEVENT (WM_XUSER + 5)
100
101 typedef enum {
102 TS_AYT, TS_BRK, TS_SYNCH, TS_EC, TS_EL, TS_GA, TS_NOP, TS_ABORT,
103 TS_AO, TS_IP, TS_SUSP, TS_EOR, TS_EOF, TS_LECHO, TS_RECHO, TS_PING
104 } Telnet_Special;
105
106 typedef enum {
107 MB_NOTHING, MB_SELECT, MB_EXTEND, MB_PASTE
108 } Mouse_Button;
109
110 typedef enum {
111 MA_NOTHING, MA_CLICK, MA_2CLK, MA_3CLK, MA_DRAG, MA_RELEASE
112 } Mouse_Action;
113
114 typedef enum {
115 VT_XWINDOWS, VT_OEMANSI, VT_OEMONLY, VT_POORMAN
116 } VT_Mode;
117
118 typedef struct {
119 char *(*init) (char *host, int port, char **realhost);
120 void (*send) (char *buf, int len);
121 void (*size) (void);
122 void (*special) (Telnet_Special code);
123 Socket (*socket) (void);
124 int (*sendok) (void);
125 int default_port;
126 } Backend;
127
128 GLOBAL Backend *back;
129
130 extern struct backend_list {
131 int protocol;
132 char *name;
133 Backend *backend;
134 } backends[];
135
136 typedef struct {
137 void (*send) (char *buf, int len);
138 } Ldisc;
139
140 GLOBAL Ldisc *ldisc;
141
142 typedef struct {
143 /* Basic options */
144 char host[512];
145 int port;
146 enum { PROT_RAW, PROT_TELNET, PROT_RLOGIN, PROT_SSH } protocol;
147 int close_on_exit;
148 int warn_on_close;
149 int ping_interval; /* in seconds */
150 /* SSH options */
151 char remote_cmd[512];
152 int nopty;
153 int compression;
154 int agentfwd;
155 enum { CIPHER_3DES, CIPHER_BLOWFISH, CIPHER_DES } cipher;
156 char keyfile[FILENAME_MAX];
157 int sshprot; /* use v1 or v2 when both available */
158 int buggymac; /* MAC bug commmercial <=v2.3.x SSH2 */
159 int try_tis_auth;
160 /* Telnet options */
161 char termtype[32];
162 char termspeed[32];
163 char environmt[1024]; /* VAR\tvalue\0VAR\tvalue\0\0 */
164 char username[32];
165 char localusername[32];
166 int rfc_environ;
167 /* Keyboard options */
168 int bksp_is_delete;
169 int rxvt_homeend;
170 int funky_type;
171 int no_applic_c; /* totally disable app cursor keys */
172 int no_applic_k; /* totally disable app keypad */
173 int app_cursor;
174 int app_keypad;
175 int nethack_keypad;
176 int alt_f4; /* is it special? */
177 int alt_space; /* is it special? */
178 int alt_only; /* is it special? */
179 int ldisc_term;
180 int alwaysontop;
181 int scroll_on_key;
182 int scroll_on_disp;
183 int compose_key;
184 char wintitle[256]; /* initial window title */
185 /* Terminal options */
186 int savelines;
187 int dec_om;
188 int wrap_mode;
189 int lfhascr;
190 int cursor_type; /* 0=block 1=underline 2=vertical */
191 int blink_cur;
192 int beep;
193 int scrollbar;
194 int locksize;
195 int bce;
196 int blinktext;
197 int win_name_always;
198 int width, height;
199 char font[64];
200 int fontisbold;
201 int fontheight;
202 int fontcharset;
203 char logfilename[FILENAME_MAX];
204 int logtype;
205 int hide_mouseptr;
206 /* Colour options */
207 int try_palette;
208 int bold_colour;
209 unsigned char colours[22][3];
210 /* Selection options */
211 int mouse_is_xterm;
212 short wordness[256];
213 /* translations */
214 VT_Mode vtmode;
215 int xlat_enablekoiwin;
216 int xlat_88592w1250;
217 int xlat_88592cp852;
218 int xlat_capslockcyr;
219 /* X11 forwarding */
220 int x11_forward;
221 char x11_display[128];
222 } Config;
223
224 /*
225 * You can compile with -DSSH_DEFAULT to have ssh by default.
226 */
227 #ifndef SSH_DEFAULT
228 #define DEFAULT_PROTOCOL PROT_TELNET
229 #define DEFAULT_PORT 23
230 #else
231 #define DEFAULT_PROTOCOL PROT_SSH
232 #define DEFAULT_PORT 22
233 #endif
234
235 /*
236 * Some global flags denoting the type of application.
237 *
238 * FLAG_VERBOSE is set when the user requests verbose details.
239 *
240 * FLAG_STDERR is set in command-line applications (which have a
241 * functioning stderr that it makes sense to write to) and not in
242 * GUI applications (which don't).
243 *
244 * FLAG_INTERACTIVE is set when a full interactive shell session is
245 * being run, _either_ because no remote command has been provided
246 * _or_ because the application is GUI and can't run non-
247 * interactively.
248 */
249 #define FLAG_VERBOSE 0x0001
250 #define FLAG_STDERR 0x0002
251 #define FLAG_INTERACTIVE 0x0004
252 GLOBAL int flags;
253
254 GLOBAL Config cfg;
255 GLOBAL int default_protocol;
256 GLOBAL int default_port;
257
258 struct RSAKey; /* be a little careful of scope */
259
260 /*
261 * Exports from window.c.
262 */
263 void request_resize (int, int, int);
264 void do_text (Context, int, int, char *, int, unsigned long, int);
265 void set_title (char *);
266 void set_icon (char *);
267 void set_sbar (int, int, int);
268 Context get_ctx(void);
269 void free_ctx (Context);
270 void palette_set (int, int, int, int);
271 void palette_reset (void);
272 void write_clip (void *, int, int);
273 void get_clip (void **, int *);
274 void optimised_move (int, int, int);
275 void connection_fatal(char *, ...);
276 void fatalbox (char *, ...);
277 void beep (int);
278 void begin_session(void);
279 void sys_cursor(int x, int y);
280 #define OPTIMISE_IS_SCROLL 1
281
282 /*
283 * Exports from noise.c.
284 */
285 void noise_get_heavy(void (*func)(void *, int));
286 void noise_get_light(void (*func)(void *, int));
287 void noise_regular(void);
288 void noise_ultralight(DWORD data);
289 void random_save_seed(void);
290 void random_destroy_seed(void);
291
292 /*
293 * Exports from windlg.c.
294 */
295 void defuse_showwindow(void);
296 int do_config (void);
297 int do_reconfig (HWND);
298 void do_defaults (char *, Config *);
299 void logevent (char *);
300 void showeventlog (HWND);
301 void showabout (HWND);
302 void verify_ssh_host_key(char *host, int port, char *keytype,
303 char *keystr, char *fingerprint);
304 int askappend(char *filename);
305 void registry_cleanup(void);
306 void force_normal(HWND hwnd);
307
308 GLOBAL int nsessions;
309 GLOBAL char **sessions;
310
311 /*
312 * Exports from settings.c.
313 */
314 void save_settings (char *section, int do_host, Config *cfg);
315 void load_settings (char *section, int do_host, Config *cfg);
316 void get_sesslist(int allocate);
317
318 /*
319 * Exports from terminal.c.
320 */
321
322 void term_init (void);
323 void term_size (int, int, int);
324 void term_out (void);
325 void term_paint (Context, int, int, int, int);
326 void term_scroll (int, int);
327 void term_pwron (void);
328 void term_clrsb (void);
329 void term_mouse (Mouse_Button, Mouse_Action, int, int);
330 void term_deselect (void);
331 void term_update (void);
332 void term_invalidate(void);
333 void term_blink(int set_cursor);
334 void term_paste(void);
335 void term_nopaste(void);
336 void from_backend(int is_stderr, char *data, int len);
337 void logfopen (void);
338 void logfclose (void);
339 void term_copyall(void);
340
341 /*
342 * Exports from raw.c.
343 */
344
345 extern Backend raw_backend;
346
347 /*
348 * Exports from rlogin.c.
349 */
350
351 extern Backend rlogin_backend;
352
353 /*
354 * Exports from telnet.c.
355 */
356
357 extern Backend telnet_backend;
358
359 /*
360 * Exports from ssh.c.
361 */
362
363 extern int (*ssh_get_password)(const char *prompt, char *str, int maxlen);
364 extern Backend ssh_backend;
365
366 /*
367 * Exports from ldisc.c.
368 */
369
370 extern Ldisc ldisc_term, ldisc_simple;
371
372 /*
373 * Exports from sshrand.c.
374 */
375
376 void random_add_noise(void *noise, int length);
377 void random_init(void);
378 int random_byte(void);
379 void random_get_savedata(void **data, int *len);
380
381 /*
382 * Exports from misc.c.
383 */
384
385 #include "puttymem.h"
386
387 /*
388 * Exports from version.c.
389 */
390 extern char ver[];
391
392 /*
393 * Exports from sizetip.c.
394 */
395 void UpdateSizeTip(HWND src, int cx, int cy);
396 void EnableSizeTip(int bEnable);
397
398 /*
399 * Exports from xlat.c.
400 */
401 unsigned char xlat_kbd2tty(unsigned char c);
402 unsigned char xlat_tty2scr(unsigned char c);
403 unsigned char xlat_latkbd2win(unsigned char c);
404
405 /*
406 * Exports from mscrypto.c
407 */
408 #ifdef MSCRYPTOAPI
409 int crypto_startup();
410 void crypto_wrapup();
411 #endif
412
413 /*
414 * Exports from pageantc.c
415 */
416 void agent_query(void *in, int inlen, void **out, int *outlen);
417 int agent_exists(void);
418
419 #ifdef DEBUG
420 void dprintf(char *fmt, ...);
421 #define debug(x) (dprintf x)
422 #else
423 #define debug(x)
424 #endif
425
426 #endif