settings.c

   1 /*
   2  * settings.c: read and write saved sessions.
   3  */
   4
   5 #include <windows.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include "putty.h"
   9 #include "storage.h"
  10
  11 /*
  12  * Tables of string <-> enum value mappings
  13  */
  14 struct keyval { char *s; int v; };
  15
  16 static const struct keyval ciphernames[] = {
  17     { "aes",        CIPHER_AES },
  18     { "blowfish",   CIPHER_BLOWFISH },
  19     { "3des",       CIPHER_3DES },
  20     { "WARN",       CIPHER_WARN },
  21     { "des",        CIPHER_DES }
  22 };
  23
  24 static void gpps(void *handle, char *name, char *def, char *val, int len)
  25 {
  26     if (!read_setting_s(handle, name, val, len)) {
  27         strncpy(val, def, len);
  28         val[len - 1] = '\0';
  29     }
  30 }
  31
  32 static void gppi(void *handle, char *name, int def, int *i)
  33 {
  34     *i = read_setting_i(handle, name, def);
  35 }
  36
  37 static int key2val(const struct keyval *mapping, int nmaps, char *key)
  38 {
  39     int i;
  40     for (i = 0; i < nmaps; i++)
  41         if (!strcmp(mapping[i].s, key)) return mapping[i].v;
  42     return -1;
  43 }
  44
  45 static const char *val2key(const struct keyval *mapping, int nmaps, int val)
  46 {
  47     int i;
  48     for (i = 0; i < nmaps; i++)
  49         if (mapping[i].v == val) return mapping[i].s;
  50     return NULL;
  51 }
  52
  53 /*
  54  * Helper function to parse a comma-separated list of strings into
  55  * a preference list array of values. Any missing values are added
  56  * to the end and duplicates are weeded.
  57  * XXX: assumes vals in 'mapping' are small +ve integers
  58  */
  59 static void gprefs(void *sesskey, char *name, char *def,
  60                    const struct keyval *mapping, int nvals,
  61                    int *array)
  62 {
  63     char commalist[80];
  64     int n;
  65     unsigned long seen = 0;            /* bitmap for weeding dups etc */
  66     gpps(sesskey, name, def, commalist, sizeof(commalist));
  67
  68     /* Grotty parsing of commalist. */
  69     n = 0;
  70     do {
  71         int v;
  72         char *key;
  73         key = strtok(n==0 ? commalist : NULL, ","); /* sorry */
  74         if (!key) break;
  75         if (((v = key2val(mapping, nvals, key)) != -1) &&
  76             !(seen & 1<<v)) {
  77             array[n] = v;
  78             n++;
  79             seen |= 1<<v;
  80         }
  81     } while (n < nvals);
  82     /* Add any missing values (backward compatibility ect). */
  83     {
  84         int i, j;
  85         for (i = 0; i < nvals; i++) {
  86             if (!(seen & 1<<mapping[i].v)) {
  87                 array[n] = mapping[i].v;
  88                 n++;
  89             }
  90         }
  91     }
  92 }
  93
  94 /*
  95  * Write out a preference list.
  96  */
  97 static void wprefs(void *sesskey, char *name,
  98                    const struct keyval *mapping, int nvals,
  99                    int *array)
 100 {
 101     char buf[80] = "";  /* XXX assumed big enough */
 102     int l = sizeof(buf)-1, i;
 103     buf[l] = '\0';
 104     for (i = 0; l > 0 && i < nvals; i++) {
 105         const char *s = val2key(mapping, nvals, array[i]);
 106         if (s) {
 107             int sl = strlen(s);
 108             if (i > 0) {
 109                 strncat(buf, ",", l);
 110                 l--;
 111             }
 112             strncat(buf, s, l);
 113             l -= sl;
 114         }
 115     }
 116     write_setting_s(sesskey, name, buf);
 117 }
 118
 119 void save_settings(char *section, int do_host, Config * cfg)
 120 {
 121     int i;
 122     char *p;
 123     void *sesskey;
 124
 125     sesskey = open_settings_w(section);
 126     if (!sesskey)
 127         return;
 128
 129     write_setting_i(sesskey, "Present", 1);
 130     if (do_host) {
 131         write_setting_s(sesskey, "HostName", cfg->host);
 132         write_setting_s(sesskey, "LogFileName", cfg->logfilename);
 133         write_setting_i(sesskey, "LogType", cfg->logtype);
 134         write_setting_i(sesskey, "LogFileClash", cfg->logxfovr);
 135     }
 136     p = "raw";
 137     for (i = 0; backends[i].name != NULL; i++)
 138         if (backends[i].protocol == cfg->protocol) {
 139             p = backends[i].name;
 140             break;
 141         }
 142     write_setting_s(sesskey, "Protocol", p);
 143     write_setting_i(sesskey, "PortNumber", cfg->port);
 144     write_setting_i(sesskey, "CloseOnExit", cfg->close_on_exit);
 145     write_setting_i(sesskey, "WarnOnClose", !!cfg->warn_on_close);
 146     write_setting_i(sesskey, "PingInterval", cfg->ping_interval / 60);  /* minutes */
 147     write_setting_i(sesskey, "PingIntervalSecs", cfg->ping_interval % 60);      /* seconds */
 148     write_setting_s(sesskey, "TerminalType", cfg->termtype);
 149     write_setting_s(sesskey, "TerminalSpeed", cfg->termspeed);
 150     {
 151         char buf[2 * sizeof(cfg->environmt)], *p, *q;
 152         p = buf;
 153         q = cfg->environmt;
 154         while (*q) {
 155             while (*q) {
 156                 int c = *q++;
 157                 if (c == '=' || c == ',' || c == '\\')
 158                     *p++ = '\\';
 159                 if (c == '\t')
 160                     c = '=';
 161                 *p++ = c;
 162             }
 163             *p++ = ',';
 164             q++;
 165         }
 166         *p = '\0';
 167         write_setting_s(sesskey, "Environment", buf);
 168     }
 169     write_setting_s(sesskey, "UserName", cfg->username);
 170     write_setting_s(sesskey, "LocalUserName", cfg->localusername);
 171     write_setting_i(sesskey, "NoPTY", cfg->nopty);
 172     write_setting_i(sesskey, "Compression", cfg->compression);
 173     write_setting_i(sesskey, "AgentFwd", cfg->agentfwd);
 174     wprefs(sesskey, "Cipher", ciphernames, CIPHER_MAX,
 175            cfg->ssh_cipherlist);
 176     write_setting_i(sesskey, "AuthTIS", cfg->try_tis_auth);
 177     write_setting_i(sesskey, "SshProt", cfg->sshprot);
 178     write_setting_i(sesskey, "BuggyMAC", cfg->buggymac);
 179     write_setting_s(sesskey, "PublicKeyFile", cfg->keyfile);
 180     write_setting_s(sesskey, "RemoteCommand", cfg->remote_cmd);
 181     write_setting_i(sesskey, "RFCEnviron", cfg->rfc_environ);
 182     write_setting_i(sesskey, "PassiveTelnet", cfg->passive_telnet);
 183     write_setting_i(sesskey, "BackspaceIsDelete", cfg->bksp_is_delete);
 184     write_setting_i(sesskey, "RXVTHomeEnd", cfg->rxvt_homeend);
 185     write_setting_i(sesskey, "LinuxFunctionKeys", cfg->funky_type);
 186     write_setting_i(sesskey, "NoApplicationKeys", cfg->no_applic_k);
 187     write_setting_i(sesskey, "NoApplicationCursors", cfg->no_applic_c);
 188     write_setting_i(sesskey, "ApplicationCursorKeys", cfg->app_cursor);
 189     write_setting_i(sesskey, "ApplicationKeypad", cfg->app_keypad);
 190     write_setting_i(sesskey, "NetHackKeypad", cfg->nethack_keypad);
 191     write_setting_i(sesskey, "AltF4", cfg->alt_f4);
 192     write_setting_i(sesskey, "AltSpace", cfg->alt_space);
 193     write_setting_i(sesskey, "AltOnly", cfg->alt_only);
 194     write_setting_i(sesskey, "ComposeKey", cfg->compose_key);
 195     write_setting_i(sesskey, "CtrlAltKeys", cfg->ctrlaltkeys);
 196     write_setting_i(sesskey, "TelnetKey", cfg->telnet_keyboard);
 197     write_setting_i(sesskey, "LocalEcho", cfg->localecho);
 198     write_setting_i(sesskey, "LocalEdit", cfg->localedit);
 199     write_setting_s(sesskey, "Answerback", cfg->answerback);
 200     write_setting_i(sesskey, "AlwaysOnTop", cfg->alwaysontop);
 201     write_setting_i(sesskey, "HideMousePtr", cfg->hide_mouseptr);
 202     write_setting_i(sesskey, "SunkenEdge", cfg->sunken_edge);
 203     write_setting_i(sesskey, "CurType", cfg->cursor_type);
 204     write_setting_i(sesskey, "BlinkCur", cfg->blink_cur);
 205     write_setting_i(sesskey, "Beep", cfg->beep);
 206     write_setting_i(sesskey, "BeepInd", cfg->beep_ind);
 207     write_setting_s(sesskey, "BellWaveFile", cfg->bell_wavefile);
 208     write_setting_i(sesskey, "BellOverload", cfg->bellovl);
 209     write_setting_i(sesskey, "BellOverloadN", cfg->bellovl_n);
 210     write_setting_i(sesskey, "BellOverloadT", cfg->bellovl_t);
 211     write_setting_i(sesskey, "BellOverloadS", cfg->bellovl_s);
 212     write_setting_i(sesskey, "ScrollbackLines", cfg->savelines);
 213     write_setting_i(sesskey, "DECOriginMode", cfg->dec_om);
 214     write_setting_i(sesskey, "AutoWrapMode", cfg->wrap_mode);
 215     write_setting_i(sesskey, "LFImpliesCR", cfg->lfhascr);
 216     write_setting_i(sesskey, "WinNameAlways", cfg->win_name_always);
 217     write_setting_s(sesskey, "WinTitle", cfg->wintitle);
 218     write_setting_i(sesskey, "TermWidth", cfg->width);
 219     write_setting_i(sesskey, "TermHeight", cfg->height);
 220     write_setting_s(sesskey, "Font", cfg->font);
 221     write_setting_i(sesskey, "FontIsBold", cfg->fontisbold);
 222     write_setting_i(sesskey, "FontCharSet", cfg->fontcharset);
 223     write_setting_i(sesskey, "FontHeight", cfg->fontheight);
 224     write_setting_i(sesskey, "FontVTMode", cfg->vtmode);
 225     write_setting_i(sesskey, "TryPalette", cfg->try_palette);
 226     write_setting_i(sesskey, "BoldAsColour", cfg->bold_colour);
 227     for (i = 0; i < 22; i++) {
 228         char buf[20], buf2[30];
 229         sprintf(buf, "Colour%d", i);
 230         sprintf(buf2, "%d,%d,%d", cfg->colours[i][0],
 231                 cfg->colours[i][1], cfg->colours[i][2]);
 232         write_setting_s(sesskey, buf, buf2);
 233     }
 234     write_setting_i(sesskey, "RawCNP", cfg->rawcnp);
 235     write_setting_i(sesskey, "MouseIsXterm", cfg->mouse_is_xterm);
 236     for (i = 0; i < 256; i += 32) {
 237         char buf[20], buf2[256];
 238         int j;
 239         sprintf(buf, "Wordness%d", i);
 240         *buf2 = '\0';
 241         for (j = i; j < i + 32; j++) {
 242             sprintf(buf2 + strlen(buf2), "%s%d",
 243                     (*buf2 ? "," : ""), cfg->wordness[j]);
 244         }
 245         write_setting_s(sesskey, buf, buf2);
 246     }
 247     write_setting_s(sesskey, "LineCodePage", cfg->line_codepage);
 248     write_setting_i(sesskey, "ScrollBar", cfg->scrollbar);
 249     write_setting_i(sesskey, "ScrollOnKey", cfg->scroll_on_key);
 250     write_setting_i(sesskey, "ScrollOnDisp", cfg->scroll_on_disp);
 251     write_setting_i(sesskey, "LockSize", cfg->locksize);
 252     write_setting_i(sesskey, "BCE", cfg->bce);
 253     write_setting_i(sesskey, "BlinkText", cfg->blinktext);
 254     write_setting_i(sesskey, "X11Forward", cfg->x11_forward);
 255     write_setting_s(sesskey, "X11Display", cfg->x11_display);
 256     write_setting_i(sesskey, "LocalPortAcceptAll", cfg->lport_acceptall);
 257     {
 258         char buf[2 * sizeof(cfg->portfwd)], *p, *q;
 259         p = buf;
 260         q = cfg->portfwd;
 261         while (*q) {
 262             while (*q) {
 263                 int c = *q++;
 264                 if (c == '=' || c == ',' || c == '\\')
 265                     *p++ = '\\';
 266                 if (c == '\t')
 267                     c = '=';
 268                 *p++ = c;
 269             }
 270             *p++ = ',';
 271             q++;
 272         }
 273         *p = '\0';
 274         write_setting_s(sesskey, "PortForwardings", buf);
 275     }
 276
 277     close_settings_w(sesskey);
 278 }
 279
 280 void load_settings(char *section, int do_host, Config * cfg)
 281 {
 282     int i;
 283     char prot[10];
 284     void *sesskey;
 285
 286     sesskey = open_settings_r(section);
 287
 288     cfg->ssh_subsys = 0;               /* FIXME: load this properly */
 289     cfg->remote_cmd_ptr = cfg->remote_cmd;
 290     cfg->remote_cmd_ptr2 = NULL;
 291
 292     gpps(sesskey, "HostName", "", cfg->host, sizeof(cfg->host));
 293     gppi(sesskey, "PortNumber", default_port, &cfg->port);
 294     gpps(sesskey, "LogFileName", "putty.log",
 295          cfg->logfilename, sizeof(cfg->logfilename));
 296     gppi(sesskey, "LogType", 0, &cfg->logtype);
 297     gppi(sesskey, "LogFileClash", LGXF_ASK, &cfg->logxfovr);
 298
 299     gpps(sesskey, "Protocol", "default", prot, 10);
 300     cfg->protocol = default_protocol;
 301     for (i = 0; backends[i].name != NULL; i++)
 302         if (!strcmp(prot, backends[i].name)) {
 303             cfg->protocol = backends[i].protocol;
 304             break;
 305         }
 306
 307     gppi(sesskey, "CloseOnExit", COE_NORMAL, &cfg->close_on_exit);
 308     gppi(sesskey, "WarnOnClose", 1, &cfg->warn_on_close);
 309     {
 310         /* This is two values for backward compatibility with 0.50/0.51 */
 311         int pingmin, pingsec;
 312         gppi(sesskey, "PingInterval", 0, &pingmin);
 313         gppi(sesskey, "PingIntervalSecs", 0, &pingsec);
 314         cfg->ping_interval = pingmin * 60 + pingsec;
 315     }
 316     gpps(sesskey, "TerminalType", "xterm", cfg->termtype,
 317          sizeof(cfg->termtype));
 318     gpps(sesskey, "TerminalSpeed", "38400,38400", cfg->termspeed,
 319          sizeof(cfg->termspeed));
 320     {
 321         char buf[2 * sizeof(cfg->environmt)], *p, *q;
 322         gpps(sesskey, "Environment", "", buf, sizeof(buf));
 323         p = buf;
 324         q = cfg->environmt;
 325         while (*p) {
 326             while (*p && *p != ',') {
 327                 int c = *p++;
 328                 if (c == '=')
 329                     c = '\t';
 330                 if (c == '\\')
 331                     c = *p++;
 332                 *q++ = c;
 333             }
 334             if (*p == ',')
 335                 p++;
 336             *q++ = '\0';
 337         }
 338         *q = '\0';
 339     }
 340     gpps(sesskey, "UserName", "", cfg->username, sizeof(cfg->username));
 341     gpps(sesskey, "LocalUserName", "", cfg->localusername,
 342          sizeof(cfg->localusername));
 343     gppi(sesskey, "NoPTY", 0, &cfg->nopty);
 344     gppi(sesskey, "Compression", 0, &cfg->compression);
 345     gppi(sesskey, "AgentFwd", 0, &cfg->agentfwd);
 346     gprefs(sesskey, "Cipher", "\0",
 347            ciphernames, CIPHER_MAX, cfg->ssh_cipherlist);
 348     gppi(sesskey, "SshProt", 1, &cfg->sshprot);
 349     gppi(sesskey, "BuggyMAC", 0, &cfg->buggymac);
 350     gppi(sesskey, "AuthTIS", 0, &cfg->try_tis_auth);
 351     gpps(sesskey, "PublicKeyFile", "", cfg->keyfile, sizeof(cfg->keyfile));
 352     gpps(sesskey, "RemoteCommand", "", cfg->remote_cmd,
 353          sizeof(cfg->remote_cmd));
 354     gppi(sesskey, "RFCEnviron", 0, &cfg->rfc_environ);
 355     gppi(sesskey, "PassiveTelnet", 0, &cfg->passive_telnet);
 356     gppi(sesskey, "BackspaceIsDelete", 1, &cfg->bksp_is_delete);
 357     gppi(sesskey, "RXVTHomeEnd", 0, &cfg->rxvt_homeend);
 358     gppi(sesskey, "LinuxFunctionKeys", 0, &cfg->funky_type);
 359     gppi(sesskey, "NoApplicationKeys", 0, &cfg->no_applic_k);
 360     gppi(sesskey, "NoApplicationCursors", 0, &cfg->no_applic_c);
 361     gppi(sesskey, "ApplicationCursorKeys", 0, &cfg->app_cursor);
 362     gppi(sesskey, "ApplicationKeypad", 0, &cfg->app_keypad);
 363     gppi(sesskey, "NetHackKeypad", 0, &cfg->nethack_keypad);
 364     gppi(sesskey, "AltF4", 1, &cfg->alt_f4);
 365     gppi(sesskey, "AltSpace", 0, &cfg->alt_space);
 366     gppi(sesskey, "AltOnly", 0, &cfg->alt_only);
 367     gppi(sesskey, "ComposeKey", 0, &cfg->compose_key);
 368     gppi(sesskey, "CtrlAltKeys", 1, &cfg->ctrlaltkeys);
 369     gppi(sesskey, "TelnetKey", 0, &cfg->telnet_keyboard);
 370     gppi(sesskey, "LocalEcho", LD_BACKEND, &cfg->localecho);
 371     gppi(sesskey, "LocalEdit", LD_BACKEND, &cfg->localedit);
 372     gpps(sesskey, "Answerback", "PuTTY", cfg->answerback,
 373          sizeof(cfg->answerback));
 374     gppi(sesskey, "AlwaysOnTop", 0, &cfg->alwaysontop);
 375     gppi(sesskey, "HideMousePtr", 0, &cfg->hide_mouseptr);
 376     gppi(sesskey, "SunkenEdge", 0, &cfg->sunken_edge);
 377     gppi(sesskey, "CurType", 0, &cfg->cursor_type);
 378     gppi(sesskey, "BlinkCur", 0, &cfg->blink_cur);
 379     /* pedantic compiler tells me I can't use &cfg->beep as an int * :-) */
 380     gppi(sesskey, "Beep", 1, &i); cfg->beep = i;
 381     gppi(sesskey, "BeepInd", 0, &i); cfg->beep_ind = i;
 382     gpps(sesskey, "BellWaveFile", "", cfg->bell_wavefile,
 383          sizeof(cfg->bell_wavefile));
 384     gppi(sesskey, "BellOverload", 1, &cfg->bellovl);
 385     gppi(sesskey, "BellOverloadN", 5, &cfg->bellovl_n);
 386     gppi(sesskey, "BellOverloadT", 2000, &cfg->bellovl_t);
 387     gppi(sesskey, "BellOverloadS", 5000, &cfg->bellovl_s);
 388     gppi(sesskey, "ScrollbackLines", 200, &cfg->savelines);
 389     gppi(sesskey, "DECOriginMode", 0, &cfg->dec_om);
 390     gppi(sesskey, "AutoWrapMode", 1, &cfg->wrap_mode);
 391     gppi(sesskey, "LFImpliesCR", 0, &cfg->lfhascr);
 392     gppi(sesskey, "WinNameAlways", 0, &cfg->win_name_always);
 393     gpps(sesskey, "WinTitle", "", cfg->wintitle, sizeof(cfg->wintitle));
 394     gppi(sesskey, "TermWidth", 80, &cfg->width);
 395     gppi(sesskey, "TermHeight", 24, &cfg->height);
 396     gpps(sesskey, "Font", "Courier", cfg->font, sizeof(cfg->font));
 397     gppi(sesskey, "FontIsBold", 0, &cfg->fontisbold);
 398     gppi(sesskey, "FontCharSet", ANSI_CHARSET, &cfg->fontcharset);
 399     gppi(sesskey, "FontHeight", 10, &cfg->fontheight);
 400     if (cfg->fontheight < 0) {
 401         int oldh, newh;
 402         HDC hdc = GetDC(NULL);
 403         int logpix = GetDeviceCaps(hdc, LOGPIXELSY);
 404         ReleaseDC(NULL, hdc);
 405
 406         oldh = -cfg->fontheight;
 407         newh = MulDiv(oldh, 72, logpix) + 1;
 408         if (MulDiv(newh, logpix, 72) > oldh)
 409             newh--;
 410         cfg->fontheight = newh;
 411     }
 412     gppi(sesskey, "FontVTMode", VT_OEMANSI, (int *) &cfg->vtmode);
 413     gppi(sesskey, "TryPalette", 0, &cfg->try_palette);
 414     gppi(sesskey, "BoldAsColour", 1, &cfg->bold_colour);
 415     for (i = 0; i < 22; i++) {
 416         static char *defaults[] = {
 417             "187,187,187", "255,255,255", "0,0,0", "85,85,85", "0,0,0",
 418             "0,255,0", "0,0,0", "85,85,85", "187,0,0", "255,85,85",
 419             "0,187,0", "85,255,85", "187,187,0", "255,255,85", "0,0,187",
 420             "85,85,255", "187,0,187", "255,85,255", "0,187,187",
 421             "85,255,255", "187,187,187", "255,255,255"
 422         };
 423         char buf[20], buf2[30];
 424         int c0, c1, c2;
 425         sprintf(buf, "Colour%d", i);
 426         gpps(sesskey, buf, defaults[i], buf2, sizeof(buf2));
 427         if (sscanf(buf2, "%d,%d,%d", &c0, &c1, &c2) == 3) {
 428             cfg->colours[i][0] = c0;
 429             cfg->colours[i][1] = c1;
 430             cfg->colours[i][2] = c2;
 431         }
 432     }
 433     gppi(sesskey, "RawCNP", 0, &cfg->rawcnp);
 434     gppi(sesskey, "MouseIsXterm", 0, &cfg->mouse_is_xterm);
 435     for (i = 0; i < 256; i += 32) {
 436         static char *defaults[] = {
 437             "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",
 438             "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",
 439             "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",
 440             "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",
 441             "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",
 442             "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",
 443             "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",
 444             "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"
 445         };
 446         char buf[20], buf2[256], *p;
 447         int j;
 448         sprintf(buf, "Wordness%d", i);
 449         gpps(sesskey, buf, defaults[i / 32], buf2, sizeof(buf2));
 450         p = buf2;
 451         for (j = i; j < i + 32; j++) {
 452             char *q = p;
 453             while (*p && *p != ',')
 454                 p++;
 455             if (*p == ',')
 456                 *p++ = '\0';
 457             cfg->wordness[j] = atoi(q);
 458         }
 459     }
 460     gpps(sesskey, "LineCodePage", "ISO-8859-1:1987", cfg->line_codepage,
 461          sizeof(cfg->line_codepage));
 462     gppi(sesskey, "ScrollBar", 1, &cfg->scrollbar);
 463     gppi(sesskey, "ScrollOnKey", 0, &cfg->scroll_on_key);
 464     gppi(sesskey, "ScrollOnDisp", 1, &cfg->scroll_on_disp);
 465     gppi(sesskey, "LockSize", 0, &cfg->locksize);
 466     gppi(sesskey, "BCE", 0, &cfg->bce);
 467     gppi(sesskey, "BlinkText", 0, &cfg->blinktext);
 468     gppi(sesskey, "X11Forward", 0, &cfg->x11_forward);
 469     gpps(sesskey, "X11Display", "localhost:0", cfg->x11_display,
 470          sizeof(cfg->x11_display));
 471
 472     gppi(sesskey, "LocalPortAcceptAll", 0, &cfg->lport_acceptall);
 473     {
 474         char buf[2 * sizeof(cfg->portfwd)], *p, *q;
 475         gpps(sesskey, "PortForwardings", "", buf, sizeof(buf));
 476         p = buf;
 477         q = cfg->portfwd;
 478         while (*p) {
 479             while (*p && *p != ',') {
 480                 int c = *p++;
 481                 if (c == '=')
 482                     c = '\t';
 483                 if (c == '\\')
 484                     c = *p++;
 485                 *q++ = c;
 486             }
 487             if (*p == ',')
 488                 p++;
 489             *q++ = '\0';
 490         }
 491         *q = '\0';
 492     }
 493
 494     close_settings_r(sesskey);
 495 }
 496
 497 void do_defaults(char *session, Config * cfg)
 498 {
 499     if (session)
 500         load_settings(session, TRUE, cfg);
 501     else
 502         load_settings("Default Settings", FALSE, cfg);
 503 }
 504
 505 static int sessioncmp(const void *av, const void *bv)
 506 {
 507     const char *a = *(const char *const *) av;
 508     const char *b = *(const char *const *) bv;
 509
 510     /*
 511      * Alphabetical order, except that "Default Settings" is a
 512      * special case and comes first.
 513      */
 514     if (!strcmp(a, "Default Settings"))
 515         return -1;                     /* a comes first */
 516     if (!strcmp(b, "Default Settings"))
 517         return +1;                     /* b comes first */
 518     return strcmp(a, b);               /* otherwise, compare normally */
 519 }
 520
 521 void get_sesslist(int allocate)
 522 {
 523     static char otherbuf[2048];
 524     static char *buffer;
 525     int buflen, bufsize, i;
 526     char *p, *ret;
 527     void *handle;
 528
 529     if (allocate) {
 530
 531         if ((handle = enum_settings_start()) == NULL)
 532             return;
 533
 534         buflen = bufsize = 0;
 535         buffer = NULL;
 536         do {
 537             ret = enum_settings_next(handle, otherbuf, sizeof(otherbuf));
 538             if (ret) {
 539                 int len = strlen(otherbuf) + 1;
 540                 if (bufsize < buflen + len) {
 541                     bufsize = buflen + len + 2048;
 542                     buffer = srealloc(buffer, bufsize);
 543                 }
 544                 strcpy(buffer + buflen, otherbuf);
 545                 buflen += strlen(buffer + buflen) + 1;
 546             }
 547         } while (ret);
 548         enum_settings_finish(handle);
 549         buffer = srealloc(buffer, buflen + 1);
 550         buffer[buflen] = '\0';
 551
 552         /*
 553          * Now set up the list of sessions. Note that "Default
 554          * Settings" must always be claimed to exist, even if it
 555          * doesn't really.
 556          */
 557
 558         p = buffer;
 559         nsessions = 1;                 /* "Default Settings" counts as one */
 560         while (*p) {
 561             if (strcmp(p, "Default Settings"))
 562                 nsessions++;
 563             while (*p)
 564                 p++;
 565             p++;
 566         }
 567
 568         sessions = smalloc((nsessions + 1) * sizeof(char *));
 569         sessions[0] = "Default Settings";
 570         p = buffer;
 571         i = 1;
 572         while (*p) {
 573             if (strcmp(p, "Default Settings"))
 574                 sessions[i++] = p;
 575             while (*p)
 576                 p++;
 577             p++;
 578         }
 579
 580         qsort(sessions, i, sizeof(char *), sessioncmp);
 581     } else {
 582         sfree(buffer);
 583         sfree(sessions);
 584     }
 585 }