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Makefile enhancements by Robert de Bath.
[sgt/putty] / settings.c
CommitLineData
a9422f39 1/*
2 * settings.c: read and write saved sessions.
3 */
4
5#include <windows.h>
6#include <stdio.h>
49bad831 7#include <stdlib.h>
a9422f39 8#include "putty.h"
9#include "storage.h"
10
11static void gpps(void *handle, char *name, char *def, char *val, int len) {
12 if (!read_setting_s(handle, name, val, len)) {
13 strncpy(val, def, len);
14 val[len-1] = '\0';
15 }
16}
17
18static void gppi(void *handle, char *name, int def, int *i) {
19 *i = read_setting_i(handle, name, def);
20}
21
22void save_settings (char *section, int do_host, Config *cfg) {
23 int i;
24 char *p;
25 void *sesskey;
26
27 sesskey = open_settings_w(section);
28 if (!sesskey)
29 return;
30
31 write_setting_i (sesskey, "Present", 1);
32 if (do_host) {
33 write_setting_s (sesskey, "HostName", cfg->host);
34 write_setting_i (sesskey, "PortNumber", cfg->port);
e1c8e0ed 35 write_setting_s (sesskey, "LogFileName", cfg->logfilename);
36 write_setting_i (sesskey, "LogType", cfg->logtype);
a9422f39 37 p = "raw";
38 for (i = 0; backends[i].name != NULL; i++)
39 if (backends[i].protocol == cfg->protocol) {
40 p = backends[i].name;
41 break;
42 }
43 write_setting_s (sesskey, "Protocol", p);
44 }
b41069ff 45 write_setting_i (sesskey, "CloseOnExit", cfg->close_on_exit);
a9422f39 46 write_setting_i (sesskey, "WarnOnClose", !!cfg->warn_on_close);
edce8e45 47 write_setting_i (sesskey, "PingInterval", cfg->ping_interval / 60); /* minutes */
48 write_setting_i (sesskey, "PingIntervalSecs", cfg->ping_interval % 60); /* seconds */
a9422f39 49 write_setting_s (sesskey, "TerminalType", cfg->termtype);
50 write_setting_s (sesskey, "TerminalSpeed", cfg->termspeed);
51 {
52 char buf[2*sizeof(cfg->environmt)], *p, *q;
53 p = buf;
54 q = cfg->environmt;
55 while (*q) {
56 while (*q) {
57 int c = *q++;
58 if (c == '=' || c == ',' || c == '\\')
59 *p++ = '\\';
60 if (c == '\t')
61 c = '=';
62 *p++ = c;
63 }
64 *p++ = ',';
65 q++;
66 }
67 *p = '\0';
68 write_setting_s (sesskey, "Environment", buf);
69 }
70 write_setting_s (sesskey, "UserName", cfg->username);
c91409da 71 write_setting_s (sesskey, "LocalUserName", cfg->localusername);
a9422f39 72 write_setting_i (sesskey, "NoPTY", cfg->nopty);
4ba9b64b 73 write_setting_i (sesskey, "Compression", cfg->compression);
a9422f39 74 write_setting_i (sesskey, "AgentFwd", cfg->agentfwd);
0a3f1d48 75 write_setting_s (sesskey, "Cipher",
76 cfg->cipher == CIPHER_BLOWFISH ? "blowfish" :
77 cfg->cipher == CIPHER_DES ? "des" :
78 cfg->cipher == CIPHER_AES ? "aes" :
79 "3des");
a9422f39 80 write_setting_i (sesskey, "AuthTIS", cfg->try_tis_auth);
81 write_setting_i (sesskey, "SshProt", cfg->sshprot);
7591b9ff 82 write_setting_i (sesskey, "BuggyMAC", cfg->buggymac);
a9422f39 83 write_setting_s (sesskey, "PublicKeyFile", cfg->keyfile);
84 write_setting_s (sesskey, "RemoteCommand", cfg->remote_cmd);
85 write_setting_i (sesskey, "RFCEnviron", cfg->rfc_environ);
86 write_setting_i (sesskey, "BackspaceIsDelete", cfg->bksp_is_delete);
87 write_setting_i (sesskey, "RXVTHomeEnd", cfg->rxvt_homeend);
88 write_setting_i (sesskey, "LinuxFunctionKeys", cfg->funky_type);
b00f8b34 89 write_setting_i (sesskey, "NoApplicationKeys", cfg->no_applic_k);
90 write_setting_i (sesskey, "NoApplicationCursors", cfg->no_applic_c);
a9422f39 91 write_setting_i (sesskey, "ApplicationCursorKeys", cfg->app_cursor);
92 write_setting_i (sesskey, "ApplicationKeypad", cfg->app_keypad);
93 write_setting_i (sesskey, "NetHackKeypad", cfg->nethack_keypad);
94 write_setting_i (sesskey, "AltF4", cfg->alt_f4);
95 write_setting_i (sesskey, "AltSpace", cfg->alt_space);
a094ae43 96 write_setting_i (sesskey, "AltOnly", cfg->alt_only);
97 write_setting_i (sesskey, "ComposeKey", cfg->compose_key);
95bbe1ae 98 write_setting_i (sesskey, "CtrlAltKeys", cfg->ctrlaltkeys);
0965bee0 99 write_setting_i (sesskey, "LocalEcho", cfg->localecho);
100 write_setting_i (sesskey, "LocalEdit", cfg->localedit);
e7fbcdd8 101 write_setting_s (sesskey, "Answerback", cfg->answerback);
e95edc00 102 write_setting_i (sesskey, "AlwaysOnTop", cfg->alwaysontop);
554c540d 103 write_setting_i (sesskey, "HideMousePtr", cfg->hide_mouseptr);
4e30ff69 104 write_setting_i (sesskey, "CurType", cfg->cursor_type);
a9422f39 105 write_setting_i (sesskey, "BlinkCur", cfg->blink_cur);
106 write_setting_i (sesskey, "Beep", cfg->beep);
03169ad0 107 write_setting_s (sesskey, "BellWaveFile", cfg->bell_wavefile);
156686ef 108 write_setting_i (sesskey, "BellOverload", cfg->bellovl);
109 write_setting_i (sesskey, "BellOverloadN", cfg->bellovl_n);
110 write_setting_i (sesskey, "BellOverloadT", cfg->bellovl_t);
111 write_setting_i (sesskey, "BellOverloadS", cfg->bellovl_s);
a9422f39 112 write_setting_i (sesskey, "ScrollbackLines", cfg->savelines);
113 write_setting_i (sesskey, "DECOriginMode", cfg->dec_om);
114 write_setting_i (sesskey, "AutoWrapMode", cfg->wrap_mode);
115 write_setting_i (sesskey, "LFImpliesCR", cfg->lfhascr);
116 write_setting_i (sesskey, "WinNameAlways", cfg->win_name_always);
117 write_setting_s (sesskey, "WinTitle", cfg->wintitle);
118 write_setting_i (sesskey, "TermWidth", cfg->width);
119 write_setting_i (sesskey, "TermHeight", cfg->height);
120 write_setting_s (sesskey, "Font", cfg->font);
121 write_setting_i (sesskey, "FontIsBold", cfg->fontisbold);
122 write_setting_i (sesskey, "FontCharSet", cfg->fontcharset);
123 write_setting_i (sesskey, "FontHeight", cfg->fontheight);
124 write_setting_i (sesskey, "FontVTMode", cfg->vtmode);
125 write_setting_i (sesskey, "TryPalette", cfg->try_palette);
126 write_setting_i (sesskey, "BoldAsColour", cfg->bold_colour);
127 for (i=0; i<22; i++) {
128 char buf[20], buf2[30];
129 sprintf(buf, "Colour%d", i);
130 sprintf(buf2, "%d,%d,%d", cfg->colours[i][0],
131 cfg->colours[i][1], cfg->colours[i][2]);
132 write_setting_s (sesskey, buf, buf2);
133 }
d3a22f79 134 write_setting_i (sesskey, "RawCNP", cfg->rawcnp);
a9422f39 135 write_setting_i (sesskey, "MouseIsXterm", cfg->mouse_is_xterm);
136 for (i=0; i<256; i+=32) {
137 char buf[20], buf2[256];
138 int j;
139 sprintf(buf, "Wordness%d", i);
140 *buf2 = '\0';
141 for (j=i; j<i+32; j++) {
142 sprintf(buf2+strlen(buf2), "%s%d",
143 (*buf2 ? "," : ""), cfg->wordness[j]);
144 }
145 write_setting_s (sesskey, buf, buf2);
146 }
147 write_setting_i (sesskey, "KoiWinXlat", cfg->xlat_enablekoiwin);
148 write_setting_i (sesskey, "88592Xlat", cfg->xlat_88592w1250);
b0faa571 149 write_setting_i (sesskey, "88592-CP852", cfg->xlat_88592cp852);
a9422f39 150 write_setting_i (sesskey, "CapsLockCyr", cfg->xlat_capslockcyr);
151 write_setting_i (sesskey, "ScrollBar", cfg->scrollbar);
152 write_setting_i (sesskey, "ScrollOnKey", cfg->scroll_on_key);
a094ae43 153 write_setting_i (sesskey, "ScrollOnDisp", cfg->scroll_on_disp);
a9422f39 154 write_setting_i (sesskey, "LockSize", cfg->locksize);
155 write_setting_i (sesskey, "BCE", cfg->bce);
156 write_setting_i (sesskey, "BlinkText", cfg->blinktext);
9c964e85 157 write_setting_i (sesskey, "X11Forward", cfg->x11_forward);
158 write_setting_s (sesskey, "X11Display", cfg->x11_display);
a9422f39 159
160 close_settings_w(sesskey);
161}
162
163void load_settings (char *section, int do_host, Config *cfg) {
164 int i;
165 char prot[10];
166 void *sesskey;
167
168 sesskey = open_settings_r(section);
169
a9100732 170 cfg->ssh_subsys = 0; /* FIXME: load this properly */
96621a84 171 cfg->remote_cmd_ptr = cfg->remote_cmd;
a9100732 172
a9422f39 173 gpps (sesskey, "HostName", "", cfg->host, sizeof(cfg->host));
174 gppi (sesskey, "PortNumber", default_port, &cfg->port);
e1c8e0ed 175 gpps (sesskey, "LogFileName", "putty.log",
176 cfg->logfilename, sizeof(cfg->logfilename));
177 gppi (sesskey, "LogType", 0, &cfg->logtype);
a9422f39 178
179 gpps (sesskey, "Protocol", "default", prot, 10);
180 cfg->protocol = default_protocol;
181 for (i = 0; backends[i].name != NULL; i++)
182 if (!strcmp(prot, backends[i].name)) {
183 cfg->protocol = backends[i].protocol;
184 break;
185 }
186
b41069ff 187 gppi (sesskey, "CloseOnExit", COE_NORMAL, &cfg->close_on_exit);
a9422f39 188 gppi (sesskey, "WarnOnClose", 1, &cfg->warn_on_close);
edce8e45 189 {
190 /* This is two values for backward compatibility with 0.50/0.51 */
191 int pingmin, pingsec;
192 gppi (sesskey, "PingInterval", 0, &pingmin);
193 gppi (sesskey, "PingIntervalSecs", 0, &pingsec);
194 cfg->ping_interval = pingmin*60 + pingsec;
195 }
a9422f39 196 gpps (sesskey, "TerminalType", "xterm", cfg->termtype,
197 sizeof(cfg->termtype));
198 gpps (sesskey, "TerminalSpeed", "38400,38400", cfg->termspeed,
199 sizeof(cfg->termspeed));
200 {
201 char buf[2*sizeof(cfg->environmt)], *p, *q;
202 gpps (sesskey, "Environment", "", buf, sizeof(buf));
203 p = buf;
204 q = cfg->environmt;
205 while (*p) {
206 while (*p && *p != ',') {
207 int c = *p++;
208 if (c == '=')
209 c = '\t';
210 if (c == '\\')
211 c = *p++;
212 *q++ = c;
213 }
214 if (*p == ',') p++;
215 *q++ = '\0';
216 }
217 *q = '\0';
218 }
219 gpps (sesskey, "UserName", "", cfg->username, sizeof(cfg->username));
c91409da 220 gpps (sesskey, "LocalUserName", "", cfg->localusername, sizeof(cfg->localusername));
a9422f39 221 gppi (sesskey, "NoPTY", 0, &cfg->nopty);
4ba9b64b 222 gppi (sesskey, "Compression", 0, &cfg->compression);
a9422f39 223 gppi (sesskey, "AgentFwd", 0, &cfg->agentfwd);
a9422f39 224 {
225 char cipher[10];
226 gpps (sesskey, "Cipher", "3des", cipher, 10);
227 if (!strcmp(cipher, "blowfish"))
228 cfg->cipher = CIPHER_BLOWFISH;
229 else if (!strcmp(cipher, "des"))
230 cfg->cipher = CIPHER_DES;
0a3f1d48 231 else if (!strcmp(cipher, "aes"))
232 cfg->cipher = CIPHER_AES;
a9422f39 233 else
234 cfg->cipher = CIPHER_3DES;
235 }
236 gppi (sesskey, "SshProt", 1, &cfg->sshprot);
7591b9ff 237 gppi (sesskey, "BuggyMAC", 0, &cfg->buggymac);
a9422f39 238 gppi (sesskey, "AuthTIS", 0, &cfg->try_tis_auth);
239 gpps (sesskey, "PublicKeyFile", "", cfg->keyfile, sizeof(cfg->keyfile));
240 gpps (sesskey, "RemoteCommand", "", cfg->remote_cmd,
241 sizeof(cfg->remote_cmd));
242 gppi (sesskey, "RFCEnviron", 0, &cfg->rfc_environ);
243 gppi (sesskey, "BackspaceIsDelete", 1, &cfg->bksp_is_delete);
244 gppi (sesskey, "RXVTHomeEnd", 0, &cfg->rxvt_homeend);
245 gppi (sesskey, "LinuxFunctionKeys", 0, &cfg->funky_type);
b00f8b34 246 gppi (sesskey, "NoApplicationKeys", 0, &cfg->no_applic_k);
247 gppi (sesskey, "NoApplicationCursors", 0, &cfg->no_applic_c);
a9422f39 248 gppi (sesskey, "ApplicationCursorKeys", 0, &cfg->app_cursor);
249 gppi (sesskey, "ApplicationKeypad", 0, &cfg->app_keypad);
250 gppi (sesskey, "NetHackKeypad", 0, &cfg->nethack_keypad);
251 gppi (sesskey, "AltF4", 1, &cfg->alt_f4);
252 gppi (sesskey, "AltSpace", 0, &cfg->alt_space);
a094ae43 253 gppi (sesskey, "AltOnly", 0, &cfg->alt_only);
254 gppi (sesskey, "ComposeKey", 0, &cfg->compose_key);
95bbe1ae 255 gppi (sesskey, "CtrlAltKeys", 1, &cfg->ctrlaltkeys);
0965bee0 256 gppi (sesskey, "LocalEcho", LD_BACKEND, &cfg->localecho);
257 gppi (sesskey, "LocalEdit", LD_BACKEND, &cfg->localedit);
e7fbcdd8 258 gpps (sesskey, "Answerback", "PuTTY", cfg->answerback, sizeof(cfg->answerback));
e95edc00 259 gppi (sesskey, "AlwaysOnTop", 0, &cfg->alwaysontop);
554c540d 260 gppi (sesskey, "HideMousePtr", 0, &cfg->hide_mouseptr);
4e30ff69 261 gppi (sesskey, "CurType", 0, &cfg->cursor_type);
a9422f39 262 gppi (sesskey, "BlinkCur", 0, &cfg->blink_cur);
263 gppi (sesskey, "Beep", 1, &cfg->beep);
03169ad0 264 gpps (sesskey, "BellWaveFile", "", cfg->bell_wavefile,
265 sizeof(cfg->bell_wavefile));
156686ef 266 gppi (sesskey, "BellOverload", 1, &cfg->bellovl);
267 gppi (sesskey, "BellOverloadN", 5, &cfg->bellovl_n);
268 gppi (sesskey, "BellOverloadT", 2, &cfg->bellovl_t);
269 gppi (sesskey, "BellOverloadS", 5, &cfg->bellovl_s);
a9422f39 270 gppi (sesskey, "ScrollbackLines", 200, &cfg->savelines);
271 gppi (sesskey, "DECOriginMode", 0, &cfg->dec_om);
272 gppi (sesskey, "AutoWrapMode", 1, &cfg->wrap_mode);
273 gppi (sesskey, "LFImpliesCR", 0, &cfg->lfhascr);
274 gppi (sesskey, "WinNameAlways", 0, &cfg->win_name_always);
275 gpps (sesskey, "WinTitle", "", cfg->wintitle, sizeof(cfg->wintitle));
276 gppi (sesskey, "TermWidth", 80, &cfg->width);
277 gppi (sesskey, "TermHeight", 24, &cfg->height);
278 gpps (sesskey, "Font", "Courier", cfg->font, sizeof(cfg->font));
279 gppi (sesskey, "FontIsBold", 0, &cfg->fontisbold);
280 gppi (sesskey, "FontCharSet", ANSI_CHARSET, &cfg->fontcharset);
281 gppi (sesskey, "FontHeight", 10, &cfg->fontheight);
3b2c664e 282 if (cfg->fontheight < 0) {
283 int oldh, newh;
284 HDC hdc = GetDC(NULL);
285 int logpix = GetDeviceCaps(hdc, LOGPIXELSY);
286 ReleaseDC(NULL, hdc);
287
288 oldh = -cfg->fontheight;
289 newh = MulDiv(oldh, 72, logpix) + 1;
290 if (MulDiv(newh, logpix, 72) > oldh)
291 newh--;
292 cfg->fontheight = newh;
293 }
a9422f39 294 gppi (sesskey, "FontVTMode", VT_OEMANSI, (int *)&cfg->vtmode);
295 gppi (sesskey, "TryPalette", 0, &cfg->try_palette);
296 gppi (sesskey, "BoldAsColour", 1, &cfg->bold_colour);
297 for (i=0; i<22; i++) {
298 static char *defaults[] = {
299 "187,187,187", "255,255,255", "0,0,0", "85,85,85", "0,0,0",
300 "0,255,0", "0,0,0", "85,85,85", "187,0,0", "255,85,85",
301 "0,187,0", "85,255,85", "187,187,0", "255,255,85", "0,0,187",
302 "85,85,255", "187,0,187", "255,85,255", "0,187,187",
303 "85,255,255", "187,187,187", "255,255,255"
304 };
305 char buf[20], buf2[30];
306 int c0, c1, c2;
307 sprintf(buf, "Colour%d", i);
308 gpps (sesskey, buf, defaults[i], buf2, sizeof(buf2));
309 if(sscanf(buf2, "%d,%d,%d", &c0, &c1, &c2) == 3) {
310 cfg->colours[i][0] = c0;
311 cfg->colours[i][1] = c1;
312 cfg->colours[i][2] = c2;
313 }
314 }
d3a22f79 315 gppi (sesskey, "RawCNP", 0, &cfg->rawcnp);
a9422f39 316 gppi (sesskey, "MouseIsXterm", 0, &cfg->mouse_is_xterm);
317 for (i=0; i<256; i+=32) {
318 static char *defaults[] = {
319 "0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
320 "0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1",
321 "1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2",
322 "1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1",
323 "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1",
324 "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1",
325 "2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2",
326 "2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2"
327 };
328 char buf[20], buf2[256], *p;
329 int j;
330 sprintf(buf, "Wordness%d", i);
331 gpps (sesskey, buf, defaults[i/32], buf2, sizeof(buf2));
332 p = buf2;
333 for (j=i; j<i+32; j++) {
334 char *q = p;
335 while (*p && *p != ',') p++;
336 if (*p == ',') *p++ = '\0';
337 cfg->wordness[j] = atoi(q);
338 }
339 }
340 gppi (sesskey, "KoiWinXlat", 0, &cfg->xlat_enablekoiwin);
341 gppi (sesskey, "88592Xlat", 0, &cfg->xlat_88592w1250);
b0faa571 342 gppi (sesskey, "88592-CP852", 0, &cfg->xlat_88592cp852);
a9422f39 343 gppi (sesskey, "CapsLockCyr", 0, &cfg->xlat_capslockcyr);
344 gppi (sesskey, "ScrollBar", 1, &cfg->scrollbar);
345 gppi (sesskey, "ScrollOnKey", 0, &cfg->scroll_on_key);
a094ae43 346 gppi (sesskey, "ScrollOnDisp", 1, &cfg->scroll_on_disp);
a9422f39 347 gppi (sesskey, "LockSize", 0, &cfg->locksize);
348 gppi (sesskey, "BCE", 0, &cfg->bce);
349 gppi (sesskey, "BlinkText", 0, &cfg->blinktext);
9c964e85 350 gppi (sesskey, "X11Forward", 0, &cfg->x11_forward);
351 gpps (sesskey, "X11Display", "localhost:0", cfg->x11_display,
352 sizeof(cfg->x11_display));
a9422f39 353
354 close_settings_r(sesskey);
355}
356
357void do_defaults (char *session, Config *cfg) {
358 if (session)
359 load_settings (session, TRUE, cfg);
360 else
361 load_settings ("Default Settings", FALSE, cfg);
362}
363
a84ca2f5 364static int sessioncmp(const void *av, const void *bv) {
365 const char *a = *(const char *const *)av;
366 const char *b = *(const char *const *)bv;
367
368 /*
369 * Alphabetical order, except that "Default Settings" is a
370 * special case and comes first.
371 */
372 if (!strcmp(a, "Default Settings"))
373 return -1; /* a comes first */
374 if (!strcmp(b, "Default Settings"))
375 return +1; /* b comes first */
376 return strcmp(a, b); /* otherwise, compare normally */
377}
378
a9422f39 379void get_sesslist(int allocate) {
380 static char otherbuf[2048];
381 static char *buffer;
382 int buflen, bufsize, i;
383 char *p, *ret;
384 void *handle;
385
386 if (allocate) {
387
388 if ((handle = enum_settings_start()) == NULL)
389 return;
390
391 buflen = bufsize = 0;
392 buffer = NULL;
393 do {
394 ret = enum_settings_next(handle, otherbuf, sizeof(otherbuf));
395 if (ret) {
396 int len = strlen(otherbuf)+1;
397 if (bufsize < buflen+len) {
398 bufsize = buflen + len + 2048;
399 buffer = srealloc(buffer, bufsize);
400 }
401 strcpy(buffer+buflen, otherbuf);
402 buflen += strlen(buffer+buflen)+1;
403 }
404 } while (ret);
405 enum_settings_finish(handle);
406 buffer = srealloc(buffer, buflen+1);
407 buffer[buflen] = '\0';
408
2221af18 409 /*
410 * Now set up the list of sessions. Note that "Default
411 * Settings" must always be claimed to exist, even if it
412 * doesn't really.
413 */
414
a9422f39 415 p = buffer;
2221af18 416 nsessions = 1; /* "Default Settings" counts as one */
a9422f39 417 while (*p) {
2221af18 418 if (strcmp(p, "Default Settings"))
419 nsessions++;
a9422f39 420 while (*p) p++;
421 p++;
422 }
423
2221af18 424 sessions = smalloc((nsessions+1) * sizeof(char *));
425 sessions[0] = "Default Settings";
a9422f39 426 p = buffer;
2221af18 427 i = 1;
a9422f39 428 while (*p) {
2221af18 429 if (strcmp(p, "Default Settings"))
430 sessions[i++] = p;
a9422f39 431 while (*p) p++;
432 p++;
433 }
a84ca2f5 434
435 qsort(sessions, i, sizeof(char *), sessioncmp);
a9422f39 436 } else {
437 sfree (buffer);
438 sfree (sessions);
439 }
440}
Simon Tatham's PuTTY GUI SSH client; import of svn://svn.tartarus.org/sgt/putty