settings.c

   1 /*
   2  * settings.c: read and write saved sessions. (platform-independent)
   3  */
   4
   5 #include <assert.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include "putty.h"
   9 #include "storage.h"
  10
  11 /* The cipher order given here is the default order. */
  12 static const struct keyval ciphernames[] = {
  13     { "aes",        CIPHER_AES },
  14     { "blowfish",   CIPHER_BLOWFISH },
  15     { "3des",       CIPHER_3DES },
  16     { "WARN",       CIPHER_WARN },
  17     { "arcfour",    CIPHER_ARCFOUR },
  18     { "des",        CIPHER_DES }
  19 };
  20
  21 static const struct keyval kexnames[] = {
  22     { "dh-gex-sha1",        KEX_DHGEX },
  23     { "dh-group14-sha1",    KEX_DHGROUP14 },
  24     { "dh-group1-sha1",     KEX_DHGROUP1 },
  25     { "rsa",                KEX_RSA },
  26     { "WARN",               KEX_WARN }
  27 };
  28
  29 /*
  30  * All the terminal modes that we know about for the "TerminalModes"
  31  * setting. (Also used by config.c for the drop-down list.)
  32  * This is currently precisely the same as the set in ssh.c, but could
  33  * in principle differ if other backends started to support tty modes
  34  * (e.g., the pty backend).
  35  */
  36 const char *const ttymodes[] = {
  37     "INTR",     "QUIT",     "ERASE",    "KILL",     "EOF",
  38     "EOL",      "EOL2",     "START",    "STOP",     "SUSP",
  39     "DSUSP",    "REPRINT",  "WERASE",   "LNEXT",    "FLUSH",
  40     "SWTCH",    "STATUS",   "DISCARD",  "IGNPAR",   "PARMRK",
  41     "INPCK",    "ISTRIP",   "INLCR",    "IGNCR",    "ICRNL",
  42     "IUCLC",    "IXON",     "IXANY",    "IXOFF",    "IMAXBEL",
  43     "ISIG",     "ICANON",   "XCASE",    "ECHO",     "ECHOE",
  44     "ECHOK",    "ECHONL",   "NOFLSH",   "TOSTOP",   "IEXTEN",
  45     "ECHOCTL",  "ECHOKE",   "PENDIN",   "OPOST",    "OLCUC",
  46     "ONLCR",    "OCRNL",    "ONOCR",    "ONLRET",   "CS7",
  47     "CS8",      "PARENB",   "PARODD",   NULL
  48 };
  49
  50 /*
  51  * Convenience functions to access the backends[] array
  52  * (which is only present in tools that manage settings).
  53  */
  54
  55 Backend *backend_from_name(const char *name)
  56 {
  57     Backend **p;
  58     for (p = backends; *p != NULL; p++)
  59         if (!strcmp((*p)->name, name))
  60             return *p;
  61     return NULL;
  62 }
  63
  64 Backend *backend_from_proto(int proto)
  65 {
  66     Backend **p;
  67     for (p = backends; *p != NULL; p++)
  68         if ((*p)->protocol == proto)
  69             return *p;
  70     return NULL;
  71 }
  72
  73 int get_remote_username(Config *cfg, char *user, size_t len)
  74 {
  75     if (*cfg->username) {
  76         strncpy(user, cfg->username, len);
  77         user[len-1] = '\0';
  78     } else {
  79         if (cfg->username_from_env) {
  80             /* Use local username. */
  81             char *luser = get_username();
  82             if (luser) {
  83                 strncpy(user, luser, len);
  84                 user[len-1] = '\0';
  85                 sfree(luser);
  86             } else {
  87                 *user = '\0';
  88             }
  89         } else {
  90             *user = '\0';
  91         }
  92     }
  93     return (*user != '\0');
  94 }
  95
  96 static void gpps(void *handle, const char *name, const char *def,
  97                  char *val, int len)
  98 {
  99     if (!read_setting_s(handle, name, val, len)) {
 100         char *pdef;
 101
 102         pdef = platform_default_s(name);
 103         if (pdef) {
 104             strncpy(val, pdef, len);
 105             sfree(pdef);
 106         } else {
 107             strncpy(val, def, len);
 108         }
 109
 110         val[len - 1] = '\0';
 111     }
 112 }
 113
 114 /*
 115  * gppfont and gppfile cannot have local defaults, since the very
 116  * format of a Filename or Font is platform-dependent. So the
 117  * platform-dependent functions MUST return some sort of value.
 118  */
 119 static void gppfont(void *handle, const char *name, FontSpec *result)
 120 {
 121     if (!read_setting_fontspec(handle, name, result))
 122         *result = platform_default_fontspec(name);
 123 }
 124 static void gppfile(void *handle, const char *name, Filename *result)
 125 {
 126     if (!read_setting_filename(handle, name, result))
 127         *result = platform_default_filename(name);
 128 }
 129
 130 static void gppi(void *handle, char *name, int def, int *i)
 131 {
 132     def = platform_default_i(name, def);
 133     *i = read_setting_i(handle, name, def);
 134 }
 135
 136 /*
 137  * Read a set of name-value pairs in the format we occasionally use:
 138  *   NAME\tVALUE\0NAME\tVALUE\0\0 in memory
 139  *   NAME=VALUE,NAME=VALUE, in storage
 140  * `def' is in the storage format.
 141  */
 142 static void gppmap(void *handle, char *name, char *def, char *val, int len)
 143 {
 144     char *buf = snewn(2*len, char), *p, *q;
 145     gpps(handle, name, def, buf, 2*len);
 146     p = buf;
 147     q = val;
 148     while (*p) {
 149         while (*p && *p != ',') {
 150             int c = *p++;
 151             if (c == '=')
 152                 c = '\t';
 153             if (c == '\\')
 154                 c = *p++;
 155             *q++ = c;
 156         }
 157         if (*p == ',')
 158             p++;
 159         *q++ = '\0';
 160     }
 161     *q = '\0';
 162     sfree(buf);
 163 }
 164
 165 /*
 166  * Write a set of name/value pairs in the above format.
 167  */
 168 static void wmap(void *handle, char const *key, char const *value, int len)
 169 {
 170     char *buf = snewn(2*len, char), *p;
 171     const char *q;
 172     p = buf;
 173     q = value;
 174     while (*q) {
 175         while (*q) {
 176             int c = *q++;
 177             if (c == '=' || c == ',' || c == '\\')
 178                 *p++ = '\\';
 179             if (c == '\t')
 180                 c = '=';
 181             *p++ = c;
 182         }
 183         *p++ = ',';
 184         q++;
 185     }
 186     *p = '\0';
 187     write_setting_s(handle, key, buf);
 188     sfree(buf);
 189 }
 190
 191 static int key2val(const struct keyval *mapping, int nmaps, char *key)
 192 {
 193     int i;
 194     for (i = 0; i < nmaps; i++)
 195         if (!strcmp(mapping[i].s, key)) return mapping[i].v;
 196     return -1;
 197 }
 198
 199 static const char *val2key(const struct keyval *mapping, int nmaps, int val)
 200 {
 201     int i;
 202     for (i = 0; i < nmaps; i++)
 203         if (mapping[i].v == val) return mapping[i].s;
 204     return NULL;
 205 }
 206
 207 /*
 208  * Helper function to parse a comma-separated list of strings into
 209  * a preference list array of values. Any missing values are added
 210  * to the end and duplicates are weeded.
 211  * XXX: assumes vals in 'mapping' are small +ve integers
 212  */
 213 static void gprefs(void *sesskey, char *name, char *def,
 214                    const struct keyval *mapping, int nvals,
 215                    int *array)
 216 {
 217     char commalist[80];
 218     char *tokarg = commalist;
 219     int n;
 220     unsigned long seen = 0;            /* bitmap for weeding dups etc */
 221     gpps(sesskey, name, def, commalist, sizeof(commalist));
 222
 223     /* Grotty parsing of commalist. */
 224     n = 0;
 225     do {
 226         int v;
 227         char *key;
 228         key = strtok(tokarg, ","); /* sorry */
 229         tokarg = NULL;
 230         if (!key) break;
 231         if (((v = key2val(mapping, nvals, key)) != -1) &&
 232             !(seen & 1<<v)) {
 233             array[n] = v;
 234             n++;
 235             seen |= 1<<v;
 236         }
 237     } while (n < nvals);
 238     /* Add any missing values (backward compatibility ect). */
 239     {
 240         int i;
 241         for (i = 0; i < nvals; i++) {
 242             assert(mapping[i].v < 32);
 243             if (!(seen & 1<<mapping[i].v)) {
 244                 array[n] = mapping[i].v;
 245                 n++;
 246             }
 247         }
 248     }
 249 }
 250
 251 /*
 252  * Write out a preference list.
 253  */
 254 static void wprefs(void *sesskey, char *name,
 255                    const struct keyval *mapping, int nvals,
 256                    int *array)
 257 {
 258     char buf[80] = "";  /* XXX assumed big enough */
 259     int l = sizeof(buf)-1, i;
 260     buf[l] = '\0';
 261     for (i = 0; l > 0 && i < nvals; i++) {
 262         const char *s = val2key(mapping, nvals, array[i]);
 263         if (s) {
 264             int sl = strlen(s);
 265             if (i > 0) {
 266                 strncat(buf, ",", l);
 267                 l--;
 268             }
 269             strncat(buf, s, l);
 270             l -= sl;
 271         }
 272     }
 273     write_setting_s(sesskey, name, buf);
 274 }
 275
 276 char *save_settings(char *section, Config * cfg)
 277 {
 278     void *sesskey;
 279     char *errmsg;
 280
 281     sesskey = open_settings_w(section, &errmsg);
 282     if (!sesskey)
 283         return errmsg;
 284     save_open_settings(sesskey, cfg);
 285     close_settings_w(sesskey);
 286     return NULL;
 287 }
 288
 289 void save_open_settings(void *sesskey, Config *cfg)
 290 {
 291     int i;
 292     char *p;
 293
 294     write_setting_i(sesskey, "Present", 1);
 295     write_setting_s(sesskey, "HostName", cfg->host);
 296     write_setting_filename(sesskey, "LogFileName", cfg->logfilename);
 297     write_setting_i(sesskey, "LogType", cfg->logtype);
 298     write_setting_i(sesskey, "LogFileClash", cfg->logxfovr);
 299     write_setting_i(sesskey, "LogFlush", cfg->logflush);
 300     write_setting_i(sesskey, "SSHLogOmitPasswords", cfg->logomitpass);
 301     write_setting_i(sesskey, "SSHLogOmitData", cfg->logomitdata);
 302     p = "raw";
 303     {
 304         const Backend *b = backend_from_proto(cfg->protocol);
 305         if (b)
 306             p = b->name;
 307     }
 308     write_setting_s(sesskey, "Protocol", p);
 309     write_setting_i(sesskey, "PortNumber", cfg->port);
 310     /* The CloseOnExit numbers are arranged in a different order from
 311      * the standard FORCE_ON / FORCE_OFF / AUTO. */
 312     write_setting_i(sesskey, "CloseOnExit", (cfg->close_on_exit+2)%3);
 313     write_setting_i(sesskey, "WarnOnClose", !!cfg->warn_on_close);
 314     write_setting_i(sesskey, "PingInterval", cfg->ping_interval / 60);  /* minutes */
 315     write_setting_i(sesskey, "PingIntervalSecs", cfg->ping_interval % 60);      /* seconds */
 316     write_setting_i(sesskey, "TCPNoDelay", cfg->tcp_nodelay);
 317     write_setting_i(sesskey, "TCPKeepalives", cfg->tcp_keepalives);
 318     write_setting_s(sesskey, "TerminalType", cfg->termtype);
 319     write_setting_s(sesskey, "TerminalSpeed", cfg->termspeed);
 320     wmap(sesskey, "TerminalModes", cfg->ttymodes, lenof(cfg->ttymodes));
 321
 322     /* Address family selection */
 323     write_setting_i(sesskey, "AddressFamily", cfg->addressfamily);
 324
 325     /* proxy settings */
 326     write_setting_s(sesskey, "ProxyExcludeList", cfg->proxy_exclude_list);
 327     write_setting_i(sesskey, "ProxyDNS", (cfg->proxy_dns+2)%3);
 328     write_setting_i(sesskey, "ProxyLocalhost", cfg->even_proxy_localhost);
 329     write_setting_i(sesskey, "ProxyMethod", cfg->proxy_type);
 330     write_setting_s(sesskey, "ProxyHost", cfg->proxy_host);
 331     write_setting_i(sesskey, "ProxyPort", cfg->proxy_port);
 332     write_setting_s(sesskey, "ProxyUsername", cfg->proxy_username);
 333     write_setting_s(sesskey, "ProxyPassword", cfg->proxy_password);
 334     write_setting_s(sesskey, "ProxyTelnetCommand", cfg->proxy_telnet_command);
 335     wmap(sesskey, "Environment", cfg->environmt, lenof(cfg->environmt));
 336     write_setting_s(sesskey, "UserName", cfg->username);
 337     write_setting_i(sesskey, "UserNameFromEnvironment", cfg->username_from_env);
 338     write_setting_s(sesskey, "LocalUserName", cfg->localusername);
 339     write_setting_i(sesskey, "NoPTY", cfg->nopty);
 340     write_setting_i(sesskey, "Compression", cfg->compression);
 341     write_setting_i(sesskey, "TryAgent", cfg->tryagent);
 342     write_setting_i(sesskey, "AgentFwd", cfg->agentfwd);
 343     write_setting_i(sesskey, "GssapiFwd", cfg->gssapifwd);
 344     write_setting_i(sesskey, "ChangeUsername", cfg->change_username);
 345     wprefs(sesskey, "Cipher", ciphernames, CIPHER_MAX,
 346            cfg->ssh_cipherlist);
 347     wprefs(sesskey, "KEX", kexnames, KEX_MAX, cfg->ssh_kexlist);
 348     write_setting_i(sesskey, "RekeyTime", cfg->ssh_rekey_time);
 349     write_setting_s(sesskey, "RekeyBytes", cfg->ssh_rekey_data);
 350     write_setting_i(sesskey, "SshNoAuth", cfg->ssh_no_userauth);
 351     write_setting_i(sesskey, "SshBanner", cfg->ssh_show_banner);
 352     write_setting_i(sesskey, "AuthTIS", cfg->try_tis_auth);
 353     write_setting_i(sesskey, "AuthKI", cfg->try_ki_auth);
 354     write_setting_i(sesskey, "AuthGSSAPI", cfg->try_gssapi_auth);
 355 #ifndef NO_GSSAPI
 356     wprefs(sesskey, "GSSLibs", gsslibkeywords, ngsslibs,
 357            cfg->ssh_gsslist);
 358     write_setting_filename(sesskey, "GSSCustom", cfg->ssh_gss_custom);
 359 #endif
 360     write_setting_i(sesskey, "SshNoShell", cfg->ssh_no_shell);
 361     write_setting_i(sesskey, "SshProt", cfg->sshprot);
 362     write_setting_s(sesskey, "LogHost", cfg->loghost);
 363     write_setting_i(sesskey, "SSH2DES", cfg->ssh2_des_cbc);
 364     write_setting_filename(sesskey, "PublicKeyFile", cfg->keyfile);
 365     write_setting_s(sesskey, "RemoteCommand", cfg->remote_cmd);
 366     write_setting_i(sesskey, "RFCEnviron", cfg->rfc_environ);
 367     write_setting_i(sesskey, "PassiveTelnet", cfg->passive_telnet);
 368     write_setting_i(sesskey, "BackspaceIsDelete", cfg->bksp_is_delete);
 369     write_setting_i(sesskey, "RXVTHomeEnd", cfg->rxvt_homeend);
 370     write_setting_i(sesskey, "LinuxFunctionKeys", cfg->funky_type);
 371     write_setting_i(sesskey, "NoApplicationKeys", cfg->no_applic_k);
 372     write_setting_i(sesskey, "NoApplicationCursors", cfg->no_applic_c);
 373     write_setting_i(sesskey, "NoMouseReporting", cfg->no_mouse_rep);
 374     write_setting_i(sesskey, "NoRemoteResize", cfg->no_remote_resize);
 375     write_setting_i(sesskey, "NoAltScreen", cfg->no_alt_screen);
 376     write_setting_i(sesskey, "NoRemoteWinTitle", cfg->no_remote_wintitle);
 377     write_setting_i(sesskey, "RemoteQTitleAction", cfg->remote_qtitle_action);
 378     write_setting_i(sesskey, "NoDBackspace", cfg->no_dbackspace);
 379     write_setting_i(sesskey, "NoRemoteCharset", cfg->no_remote_charset);
 380     write_setting_i(sesskey, "ApplicationCursorKeys", cfg->app_cursor);
 381     write_setting_i(sesskey, "ApplicationKeypad", cfg->app_keypad);
 382     write_setting_i(sesskey, "NetHackKeypad", cfg->nethack_keypad);
 383     write_setting_i(sesskey, "AltF4", cfg->alt_f4);
 384     write_setting_i(sesskey, "AltSpace", cfg->alt_space);
 385     write_setting_i(sesskey, "AltOnly", cfg->alt_only);
 386     write_setting_i(sesskey, "ComposeKey", cfg->compose_key);
 387     write_setting_i(sesskey, "CtrlAltKeys", cfg->ctrlaltkeys);
 388     write_setting_i(sesskey, "TelnetKey", cfg->telnet_keyboard);
 389     write_setting_i(sesskey, "TelnetRet", cfg->telnet_newline);
 390     write_setting_i(sesskey, "LocalEcho", cfg->localecho);
 391     write_setting_i(sesskey, "LocalEdit", cfg->localedit);
 392     write_setting_s(sesskey, "Answerback", cfg->answerback);
 393     write_setting_i(sesskey, "AlwaysOnTop", cfg->alwaysontop);
 394     write_setting_i(sesskey, "FullScreenOnAltEnter", cfg->fullscreenonaltenter);
 395     write_setting_i(sesskey, "HideMousePtr", cfg->hide_mouseptr);
 396     write_setting_i(sesskey, "SunkenEdge", cfg->sunken_edge);
 397     write_setting_i(sesskey, "WindowBorder", cfg->window_border);
 398     write_setting_i(sesskey, "CurType", cfg->cursor_type);
 399     write_setting_i(sesskey, "BlinkCur", cfg->blink_cur);
 400     write_setting_i(sesskey, "Beep", cfg->beep);
 401     write_setting_i(sesskey, "BeepInd", cfg->beep_ind);
 402     write_setting_filename(sesskey, "BellWaveFile", cfg->bell_wavefile);
 403     write_setting_i(sesskey, "BellOverload", cfg->bellovl);
 404     write_setting_i(sesskey, "BellOverloadN", cfg->bellovl_n);
 405     write_setting_i(sesskey, "BellOverloadT", cfg->bellovl_t
 406 #ifdef PUTTY_UNIX_H
 407                     * 1000
 408 #endif
 409                     );
 410     write_setting_i(sesskey, "BellOverloadS", cfg->bellovl_s
 411 #ifdef PUTTY_UNIX_H
 412                     * 1000
 413 #endif
 414                     );
 415     write_setting_i(sesskey, "ScrollbackLines", cfg->savelines);
 416     write_setting_i(sesskey, "DECOriginMode", cfg->dec_om);
 417     write_setting_i(sesskey, "AutoWrapMode", cfg->wrap_mode);
 418     write_setting_i(sesskey, "LFImpliesCR", cfg->lfhascr);
 419     write_setting_i(sesskey, "CRImpliesLF", cfg->crhaslf);
 420     write_setting_i(sesskey, "DisableArabicShaping", cfg->arabicshaping);
 421     write_setting_i(sesskey, "DisableBidi", cfg->bidi);
 422     write_setting_i(sesskey, "WinNameAlways", cfg->win_name_always);
 423     write_setting_s(sesskey, "WinTitle", cfg->wintitle);
 424     write_setting_i(sesskey, "TermWidth", cfg->width);
 425     write_setting_i(sesskey, "TermHeight", cfg->height);
 426     write_setting_fontspec(sesskey, "Font", cfg->font);
 427     write_setting_i(sesskey, "FontQuality", cfg->font_quality);
 428     write_setting_i(sesskey, "FontVTMode", cfg->vtmode);
 429     write_setting_i(sesskey, "UseSystemColours", cfg->system_colour);
 430     write_setting_i(sesskey, "TryPalette", cfg->try_palette);
 431     write_setting_i(sesskey, "ANSIColour", cfg->ansi_colour);
 432     write_setting_i(sesskey, "Xterm256Colour", cfg->xterm_256_colour);
 433     write_setting_i(sesskey, "BoldAsColour", cfg->bold_colour);
 434
 435     for (i = 0; i < 22; i++) {
 436         char buf[20], buf2[30];
 437         sprintf(buf, "Colour%d", i);
 438         sprintf(buf2, "%d,%d,%d", cfg->colours[i][0],
 439                 cfg->colours[i][1], cfg->colours[i][2]);
 440         write_setting_s(sesskey, buf, buf2);
 441     }
 442     write_setting_i(sesskey, "RawCNP", cfg->rawcnp);
 443     write_setting_i(sesskey, "PasteRTF", cfg->rtf_paste);
 444     write_setting_i(sesskey, "MouseIsXterm", cfg->mouse_is_xterm);
 445     write_setting_i(sesskey, "RectSelect", cfg->rect_select);
 446     write_setting_i(sesskey, "MouseOverride", cfg->mouse_override);
 447     for (i = 0; i < 256; i += 32) {
 448         char buf[20], buf2[256];
 449         int j;
 450         sprintf(buf, "Wordness%d", i);
 451         *buf2 = '\0';
 452         for (j = i; j < i + 32; j++) {
 453             sprintf(buf2 + strlen(buf2), "%s%d",
 454                     (*buf2 ? "," : ""), cfg->wordness[j]);
 455         }
 456         write_setting_s(sesskey, buf, buf2);
 457     }
 458     write_setting_s(sesskey, "LineCodePage", cfg->line_codepage);
 459     write_setting_i(sesskey, "CJKAmbigWide", cfg->cjk_ambig_wide);
 460     write_setting_i(sesskey, "UTF8Override", cfg->utf8_override);
 461     write_setting_s(sesskey, "Printer", cfg->printer);
 462     write_setting_i(sesskey, "CapsLockCyr", cfg->xlat_capslockcyr);
 463     write_setting_i(sesskey, "ScrollBar", cfg->scrollbar);
 464     write_setting_i(sesskey, "ScrollBarFullScreen", cfg->scrollbar_in_fullscreen);
 465     write_setting_i(sesskey, "ScrollOnKey", cfg->scroll_on_key);
 466     write_setting_i(sesskey, "ScrollOnDisp", cfg->scroll_on_disp);
 467     write_setting_i(sesskey, "EraseToScrollback", cfg->erase_to_scrollback);
 468     write_setting_i(sesskey, "LockSize", cfg->resize_action);
 469     write_setting_i(sesskey, "BCE", cfg->bce);
 470     write_setting_i(sesskey, "BlinkText", cfg->blinktext);
 471     write_setting_i(sesskey, "X11Forward", cfg->x11_forward);
 472     write_setting_s(sesskey, "X11Display", cfg->x11_display);
 473     write_setting_i(sesskey, "X11AuthType", cfg->x11_auth);
 474     write_setting_filename(sesskey, "X11AuthFile", cfg->xauthfile);
 475     write_setting_i(sesskey, "LocalPortAcceptAll", cfg->lport_acceptall);
 476     write_setting_i(sesskey, "RemotePortAcceptAll", cfg->rport_acceptall);
 477     wmap(sesskey, "PortForwardings", cfg->portfwd, lenof(cfg->portfwd));
 478     write_setting_i(sesskey, "BugIgnore1", 2-cfg->sshbug_ignore1);
 479     write_setting_i(sesskey, "BugPlainPW1", 2-cfg->sshbug_plainpw1);
 480     write_setting_i(sesskey, "BugRSA1", 2-cfg->sshbug_rsa1);
 481     write_setting_i(sesskey, "BugIgnore2", 2-cfg->sshbug_ignore2);
 482     write_setting_i(sesskey, "BugHMAC2", 2-cfg->sshbug_hmac2);
 483     write_setting_i(sesskey, "BugDeriveKey2", 2-cfg->sshbug_derivekey2);
 484     write_setting_i(sesskey, "BugRSAPad2", 2-cfg->sshbug_rsapad2);
 485     write_setting_i(sesskey, "BugPKSessID2", 2-cfg->sshbug_pksessid2);
 486     write_setting_i(sesskey, "BugRekey2", 2-cfg->sshbug_rekey2);
 487     write_setting_i(sesskey, "BugMaxPkt2", 2-cfg->sshbug_maxpkt2);
 488     write_setting_i(sesskey, "StampUtmp", cfg->stamp_utmp);
 489     write_setting_i(sesskey, "LoginShell", cfg->login_shell);
 490     write_setting_i(sesskey, "ScrollbarOnLeft", cfg->scrollbar_on_left);
 491     write_setting_fontspec(sesskey, "BoldFont", cfg->boldfont);
 492     write_setting_fontspec(sesskey, "WideFont", cfg->widefont);
 493     write_setting_fontspec(sesskey, "WideBoldFont", cfg->wideboldfont);
 494     write_setting_i(sesskey, "ShadowBold", cfg->shadowbold);
 495     write_setting_i(sesskey, "ShadowBoldOffset", cfg->shadowboldoffset);
 496     write_setting_s(sesskey, "SerialLine", cfg->serline);
 497     write_setting_i(sesskey, "SerialSpeed", cfg->serspeed);
 498     write_setting_i(sesskey, "SerialDataBits", cfg->serdatabits);
 499     write_setting_i(sesskey, "SerialStopHalfbits", cfg->serstopbits);
 500     write_setting_i(sesskey, "SerialParity", cfg->serparity);
 501     write_setting_i(sesskey, "SerialFlowControl", cfg->serflow);
 502 }
 503
 504 void load_settings(char *section, Config * cfg)
 505 {
 506     void *sesskey;
 507
 508     sesskey = open_settings_r(section);
 509     load_open_settings(sesskey, cfg);
 510     close_settings_r(sesskey);
 511
 512     if (cfg_launchable(cfg))
 513         add_session_to_jumplist(section);
 514 }
 515
 516 void load_open_settings(void *sesskey, Config *cfg)
 517 {
 518     int i;
 519     char prot[10];
 520
 521     cfg->ssh_subsys = 0;               /* FIXME: load this properly */
 522     cfg->remote_cmd_ptr = NULL;
 523     cfg->remote_cmd_ptr2 = NULL;
 524     cfg->ssh_nc_host[0] = '\0';
 525
 526     gpps(sesskey, "HostName", "", cfg->host, sizeof(cfg->host));
 527     gppfile(sesskey, "LogFileName", &cfg->logfilename);
 528     gppi(sesskey, "LogType", 0, &cfg->logtype);
 529     gppi(sesskey, "LogFileClash", LGXF_ASK, &cfg->logxfovr);
 530     gppi(sesskey, "LogFlush", 1, &cfg->logflush);
 531     gppi(sesskey, "SSHLogOmitPasswords", 1, &cfg->logomitpass);
 532     gppi(sesskey, "SSHLogOmitData", 0, &cfg->logomitdata);
 533
 534     gpps(sesskey, "Protocol", "default", prot, 10);
 535     cfg->protocol = default_protocol;
 536     cfg->port = default_port;
 537     {
 538         const Backend *b = backend_from_name(prot);
 539         if (b) {
 540             cfg->protocol = b->protocol;
 541             gppi(sesskey, "PortNumber", default_port, &cfg->port);
 542         }
 543     }
 544
 545     /* Address family selection */
 546     gppi(sesskey, "AddressFamily", ADDRTYPE_UNSPEC, &cfg->addressfamily);
 547
 548     /* The CloseOnExit numbers are arranged in a different order from
 549      * the standard FORCE_ON / FORCE_OFF / AUTO. */
 550     gppi(sesskey, "CloseOnExit", 1, &i); cfg->close_on_exit = (i+1)%3;
 551     gppi(sesskey, "WarnOnClose", 1, &cfg->warn_on_close);
 552     {
 553         /* This is two values for backward compatibility with 0.50/0.51 */
 554         int pingmin, pingsec;
 555         gppi(sesskey, "PingInterval", 0, &pingmin);
 556         gppi(sesskey, "PingIntervalSecs", 0, &pingsec);
 557         cfg->ping_interval = pingmin * 60 + pingsec;
 558     }
 559     gppi(sesskey, "TCPNoDelay", 1, &cfg->tcp_nodelay);
 560     gppi(sesskey, "TCPKeepalives", 0, &cfg->tcp_keepalives);
 561     gpps(sesskey, "TerminalType", "xterm", cfg->termtype,
 562          sizeof(cfg->termtype));
 563     gpps(sesskey, "TerminalSpeed", "38400,38400", cfg->termspeed,
 564          sizeof(cfg->termspeed));
 565     {
 566         /* This hardcodes a big set of defaults in any new saved
 567          * sessions. Let's hope we don't change our mind. */
 568         int i;
 569         char *def = dupstr("");
 570         /* Default: all set to "auto" */
 571         for (i = 0; ttymodes[i]; i++) {
 572             char *def2 = dupprintf("%s%s=A,", def, ttymodes[i]);
 573             sfree(def);
 574             def = def2;
 575         }
 576         gppmap(sesskey, "TerminalModes", def,
 577                cfg->ttymodes, lenof(cfg->ttymodes));
 578         sfree(def);
 579     }
 580
 581     /* proxy settings */
 582     gpps(sesskey, "ProxyExcludeList", "", cfg->proxy_exclude_list,
 583          sizeof(cfg->proxy_exclude_list));
 584     gppi(sesskey, "ProxyDNS", 1, &i); cfg->proxy_dns = (i+1)%3;
 585     gppi(sesskey, "ProxyLocalhost", 0, &cfg->even_proxy_localhost);
 586     gppi(sesskey, "ProxyMethod", -1, &cfg->proxy_type);
 587     if (cfg->proxy_type == -1) {
 588         int i;
 589         gppi(sesskey, "ProxyType", 0, &i);
 590         if (i == 0)
 591             cfg->proxy_type = PROXY_NONE;
 592         else if (i == 1)
 593             cfg->proxy_type = PROXY_HTTP;
 594         else if (i == 3)
 595             cfg->proxy_type = PROXY_TELNET;
 596         else if (i == 4)
 597             cfg->proxy_type = PROXY_CMD;
 598         else {
 599             gppi(sesskey, "ProxySOCKSVersion", 5, &i);
 600             if (i == 5)
 601                 cfg->proxy_type = PROXY_SOCKS5;
 602             else
 603                 cfg->proxy_type = PROXY_SOCKS4;
 604         }
 605     }
 606     gpps(sesskey, "ProxyHost", "proxy", cfg->proxy_host,
 607          sizeof(cfg->proxy_host));
 608     gppi(sesskey, "ProxyPort", 80, &cfg->proxy_port);
 609     gpps(sesskey, "ProxyUsername", "", cfg->proxy_username,
 610          sizeof(cfg->proxy_username));
 611     gpps(sesskey, "ProxyPassword", "", cfg->proxy_password,
 612          sizeof(cfg->proxy_password));
 613     gpps(sesskey, "ProxyTelnetCommand", "connect %host %port\\n",
 614          cfg->proxy_telnet_command, sizeof(cfg->proxy_telnet_command));
 615     gppmap(sesskey, "Environment", "", cfg->environmt, lenof(cfg->environmt));
 616     gpps(sesskey, "UserName", "", cfg->username, sizeof(cfg->username));
 617     gppi(sesskey, "UserNameFromEnvironment", 0, &cfg->username_from_env);
 618     gpps(sesskey, "LocalUserName", "", cfg->localusername,
 619          sizeof(cfg->localusername));
 620     gppi(sesskey, "NoPTY", 0, &cfg->nopty);
 621     gppi(sesskey, "Compression", 0, &cfg->compression);
 622     gppi(sesskey, "TryAgent", 1, &cfg->tryagent);
 623     gppi(sesskey, "AgentFwd", 0, &cfg->agentfwd);
 624     gppi(sesskey, "ChangeUsername", 0, &cfg->change_username);
 625     gppi(sesskey, "GssapiFwd", 0, &cfg->gssapifwd);
 626     gprefs(sesskey, "Cipher", "\0",
 627            ciphernames, CIPHER_MAX, cfg->ssh_cipherlist);
 628     {
 629         /* Backward-compatibility: we used to have an option to
 630          * disable gex under the "bugs" panel after one report of
 631          * a server which offered it then choked, but we never got
 632          * a server version string or any other reports. */
 633         char *default_kexes;
 634         gppi(sesskey, "BugDHGEx2", 0, &i); i = 2-i;
 635         if (i == FORCE_ON)
 636             default_kexes = "dh-group14-sha1,dh-group1-sha1,rsa,WARN,dh-gex-sha1";
 637         else
 638             default_kexes = "dh-gex-sha1,dh-group14-sha1,dh-group1-sha1,rsa,WARN";
 639         gprefs(sesskey, "KEX", default_kexes,
 640                kexnames, KEX_MAX, cfg->ssh_kexlist);
 641     }
 642     gppi(sesskey, "RekeyTime", 60, &cfg->ssh_rekey_time);
 643     gpps(sesskey, "RekeyBytes", "1G", cfg->ssh_rekey_data,
 644          sizeof(cfg->ssh_rekey_data));
 645     gppi(sesskey, "SshProt", 2, &cfg->sshprot);
 646     gpps(sesskey, "LogHost", "", cfg->loghost, sizeof(cfg->loghost));
 647     gppi(sesskey, "SSH2DES", 0, &cfg->ssh2_des_cbc);
 648     gppi(sesskey, "SshNoAuth", 0, &cfg->ssh_no_userauth);
 649     gppi(sesskey, "SshBanner", 1, &cfg->ssh_show_banner);
 650     gppi(sesskey, "AuthTIS", 0, &cfg->try_tis_auth);
 651     gppi(sesskey, "AuthKI", 1, &cfg->try_ki_auth);
 652     gppi(sesskey, "AuthGSSAPI", 1, &cfg->try_gssapi_auth);
 653 #ifndef NO_GSSAPI
 654     gprefs(sesskey, "GSSLibs", "\0",
 655            gsslibkeywords, ngsslibs, cfg->ssh_gsslist);
 656     gppfile(sesskey, "GSSCustom", &cfg->ssh_gss_custom);
 657 #endif
 658     gppi(sesskey, "SshNoShell", 0, &cfg->ssh_no_shell);
 659     gppfile(sesskey, "PublicKeyFile", &cfg->keyfile);
 660     gpps(sesskey, "RemoteCommand", "", cfg->remote_cmd,
 661          sizeof(cfg->remote_cmd));
 662     gppi(sesskey, "RFCEnviron", 0, &cfg->rfc_environ);
 663     gppi(sesskey, "PassiveTelnet", 0, &cfg->passive_telnet);
 664     gppi(sesskey, "BackspaceIsDelete", 1, &cfg->bksp_is_delete);
 665     gppi(sesskey, "RXVTHomeEnd", 0, &cfg->rxvt_homeend);
 666     gppi(sesskey, "LinuxFunctionKeys", 0, &cfg->funky_type);
 667     gppi(sesskey, "NoApplicationKeys", 0, &cfg->no_applic_k);
 668     gppi(sesskey, "NoApplicationCursors", 0, &cfg->no_applic_c);
 669     gppi(sesskey, "NoMouseReporting", 0, &cfg->no_mouse_rep);
 670     gppi(sesskey, "NoRemoteResize", 0, &cfg->no_remote_resize);
 671     gppi(sesskey, "NoAltScreen", 0, &cfg->no_alt_screen);
 672     gppi(sesskey, "NoRemoteWinTitle", 0, &cfg->no_remote_wintitle);
 673     {
 674         /* Backward compatibility */
 675         int no_remote_qtitle;
 676         gppi(sesskey, "NoRemoteQTitle", 1, &no_remote_qtitle);
 677         /* We deliberately interpret the old setting of "no response" as
 678          * "empty string". This changes the behaviour, but hopefully for
 679          * the better; the user can always recover the old behaviour. */
 680         gppi(sesskey, "RemoteQTitleAction",
 681              no_remote_qtitle ? TITLE_EMPTY : TITLE_REAL,
 682              &cfg->remote_qtitle_action);
 683     }
 684     gppi(sesskey, "NoDBackspace", 0, &cfg->no_dbackspace);
 685     gppi(sesskey, "NoRemoteCharset", 0, &cfg->no_remote_charset);
 686     gppi(sesskey, "ApplicationCursorKeys", 0, &cfg->app_cursor);
 687     gppi(sesskey, "ApplicationKeypad", 0, &cfg->app_keypad);
 688     gppi(sesskey, "NetHackKeypad", 0, &cfg->nethack_keypad);
 689     gppi(sesskey, "AltF4", 1, &cfg->alt_f4);
 690     gppi(sesskey, "AltSpace", 0, &cfg->alt_space);
 691     gppi(sesskey, "AltOnly", 0, &cfg->alt_only);
 692     gppi(sesskey, "ComposeKey", 0, &cfg->compose_key);
 693     gppi(sesskey, "CtrlAltKeys", 1, &cfg->ctrlaltkeys);
 694     gppi(sesskey, "TelnetKey", 0, &cfg->telnet_keyboard);
 695     gppi(sesskey, "TelnetRet", 1, &cfg->telnet_newline);
 696     gppi(sesskey, "LocalEcho", AUTO, &cfg->localecho);
 697     gppi(sesskey, "LocalEdit", AUTO, &cfg->localedit);
 698     gpps(sesskey, "Answerback", "PuTTY", cfg->answerback,
 699          sizeof(cfg->answerback));
 700     gppi(sesskey, "AlwaysOnTop", 0, &cfg->alwaysontop);
 701     gppi(sesskey, "FullScreenOnAltEnter", 0, &cfg->fullscreenonaltenter);
 702     gppi(sesskey, "HideMousePtr", 0, &cfg->hide_mouseptr);
 703     gppi(sesskey, "SunkenEdge", 0, &cfg->sunken_edge);
 704     gppi(sesskey, "WindowBorder", 1, &cfg->window_border);
 705     gppi(sesskey, "CurType", 0, &cfg->cursor_type);
 706     gppi(sesskey, "BlinkCur", 0, &cfg->blink_cur);
 707     /* pedantic compiler tells me I can't use &cfg->beep as an int * :-) */
 708     gppi(sesskey, "Beep", 1, &cfg->beep);
 709     gppi(sesskey, "BeepInd", 0, &cfg->beep_ind);
 710     gppfile(sesskey, "BellWaveFile", &cfg->bell_wavefile);
 711     gppi(sesskey, "BellOverload", 1, &cfg->bellovl);
 712     gppi(sesskey, "BellOverloadN", 5, &cfg->bellovl_n);
 713     gppi(sesskey, "BellOverloadT", 2*TICKSPERSEC
 714 #ifdef PUTTY_UNIX_H
 715                                    *1000
 716 #endif
 717                                    , &i);
 718     cfg->bellovl_t = i
 719 #ifdef PUTTY_UNIX_H
 720                     / 1000
 721 #endif
 722         ;
 723     gppi(sesskey, "BellOverloadS", 5*TICKSPERSEC
 724 #ifdef PUTTY_UNIX_H
 725                                    *1000
 726 #endif
 727                                    , &i);
 728     cfg->bellovl_s = i
 729 #ifdef PUTTY_UNIX_H
 730                     / 1000
 731 #endif
 732         ;
 733     gppi(sesskey, "ScrollbackLines", 200, &cfg->savelines);
 734     gppi(sesskey, "DECOriginMode", 0, &cfg->dec_om);
 735     gppi(sesskey, "AutoWrapMode", 1, &cfg->wrap_mode);
 736     gppi(sesskey, "LFImpliesCR", 0, &cfg->lfhascr);
 737     gppi(sesskey, "CRImpliesLF", 0, &cfg->crhaslf);
 738     gppi(sesskey, "DisableArabicShaping", 0, &cfg->arabicshaping);
 739     gppi(sesskey, "DisableBidi", 0, &cfg->bidi);
 740     gppi(sesskey, "WinNameAlways", 1, &cfg->win_name_always);
 741     gpps(sesskey, "WinTitle", "", cfg->wintitle, sizeof(cfg->wintitle));
 742     gppi(sesskey, "TermWidth", 80, &cfg->width);
 743     gppi(sesskey, "TermHeight", 24, &cfg->height);
 744     gppfont(sesskey, "Font", &cfg->font);
 745     gppi(sesskey, "FontQuality", FQ_DEFAULT, &cfg->font_quality);
 746     gppi(sesskey, "FontVTMode", VT_UNICODE, (int *) &cfg->vtmode);
 747     gppi(sesskey, "UseSystemColours", 0, &cfg->system_colour);
 748     gppi(sesskey, "TryPalette", 0, &cfg->try_palette);
 749     gppi(sesskey, "ANSIColour", 1, &cfg->ansi_colour);
 750     gppi(sesskey, "Xterm256Colour", 1, &cfg->xterm_256_colour);
 751     gppi(sesskey, "BoldAsColour", 1, &cfg->bold_colour);
 752
 753     for (i = 0; i < 22; i++) {
 754         static const char *const defaults[] = {
 755             "187,187,187", "255,255,255", "0,0,0", "85,85,85", "0,0,0",
 756             "0,255,0", "0,0,0", "85,85,85", "187,0,0", "255,85,85",
 757             "0,187,0", "85,255,85", "187,187,0", "255,255,85", "0,0,187",
 758             "85,85,255", "187,0,187", "255,85,255", "0,187,187",
 759             "85,255,255", "187,187,187", "255,255,255"
 760         };
 761         char buf[20], buf2[30];
 762         int c0, c1, c2;
 763         sprintf(buf, "Colour%d", i);
 764         gpps(sesskey, buf, defaults[i], buf2, sizeof(buf2));
 765         if (sscanf(buf2, "%d,%d,%d", &c0, &c1, &c2) == 3) {
 766             cfg->colours[i][0] = c0;
 767             cfg->colours[i][1] = c1;
 768             cfg->colours[i][2] = c2;
 769         }
 770     }
 771     gppi(sesskey, "RawCNP", 0, &cfg->rawcnp);
 772     gppi(sesskey, "PasteRTF", 0, &cfg->rtf_paste);
 773     gppi(sesskey, "MouseIsXterm", 0, &cfg->mouse_is_xterm);
 774     gppi(sesskey, "RectSelect", 0, &cfg->rect_select);
 775     gppi(sesskey, "MouseOverride", 1, &cfg->mouse_override);
 776     for (i = 0; i < 256; i += 32) {
 777         static const char *const defaults[] = {
 778             "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",
 779             "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",
 780             "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",
 781             "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",
 782             "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",
 783             "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",
 784             "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",
 785             "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"
 786         };
 787         char buf[20], buf2[256], *p;
 788         int j;
 789         sprintf(buf, "Wordness%d", i);
 790         gpps(sesskey, buf, defaults[i / 32], buf2, sizeof(buf2));
 791         p = buf2;
 792         for (j = i; j < i + 32; j++) {
 793             char *q = p;
 794             while (*p && *p != ',')
 795                 p++;
 796             if (*p == ',')
 797                 *p++ = '\0';
 798             cfg->wordness[j] = atoi(q);
 799         }
 800     }
 801     /*
 802      * The empty default for LineCodePage will be converted later
 803      * into a plausible default for the locale.
 804      */
 805     gpps(sesskey, "LineCodePage", "", cfg->line_codepage,
 806          sizeof(cfg->line_codepage));
 807     gppi(sesskey, "CJKAmbigWide", 0, &cfg->cjk_ambig_wide);
 808     gppi(sesskey, "UTF8Override", 1, &cfg->utf8_override);
 809     gpps(sesskey, "Printer", "", cfg->printer, sizeof(cfg->printer));
 810     gppi (sesskey, "CapsLockCyr", 0, &cfg->xlat_capslockcyr);
 811     gppi(sesskey, "ScrollBar", 1, &cfg->scrollbar);
 812     gppi(sesskey, "ScrollBarFullScreen", 0, &cfg->scrollbar_in_fullscreen);
 813     gppi(sesskey, "ScrollOnKey", 0, &cfg->scroll_on_key);
 814     gppi(sesskey, "ScrollOnDisp", 1, &cfg->scroll_on_disp);
 815     gppi(sesskey, "EraseToScrollback", 1, &cfg->erase_to_scrollback);
 816     gppi(sesskey, "LockSize", 0, &cfg->resize_action);
 817     gppi(sesskey, "BCE", 1, &cfg->bce);
 818     gppi(sesskey, "BlinkText", 0, &cfg->blinktext);
 819     gppi(sesskey, "X11Forward", 0, &cfg->x11_forward);
 820     gpps(sesskey, "X11Display", "", cfg->x11_display,
 821          sizeof(cfg->x11_display));
 822     gppi(sesskey, "X11AuthType", X11_MIT, &cfg->x11_auth);
 823     gppfile(sesskey, "X11AuthFile", &cfg->xauthfile);
 824
 825     gppi(sesskey, "LocalPortAcceptAll", 0, &cfg->lport_acceptall);
 826     gppi(sesskey, "RemotePortAcceptAll", 0, &cfg->rport_acceptall);
 827     gppmap(sesskey, "PortForwardings", "", cfg->portfwd, lenof(cfg->portfwd));
 828     gppi(sesskey, "BugIgnore1", 0, &i); cfg->sshbug_ignore1 = 2-i;
 829     gppi(sesskey, "BugPlainPW1", 0, &i); cfg->sshbug_plainpw1 = 2-i;
 830     gppi(sesskey, "BugRSA1", 0, &i); cfg->sshbug_rsa1 = 2-i;
 831     gppi(sesskey, "BugIgnore2", 0, &i); cfg->sshbug_ignore2 = 2-i;
 832     {
 833         int i;
 834         gppi(sesskey, "BugHMAC2", 0, &i); cfg->sshbug_hmac2 = 2-i;
 835         if (cfg->sshbug_hmac2 == AUTO) {
 836             gppi(sesskey, "BuggyMAC", 0, &i);
 837             if (i == 1)
 838                 cfg->sshbug_hmac2 = FORCE_ON;
 839         }
 840     }
 841     gppi(sesskey, "BugDeriveKey2", 0, &i); cfg->sshbug_derivekey2 = 2-i;
 842     gppi(sesskey, "BugRSAPad2", 0, &i); cfg->sshbug_rsapad2 = 2-i;
 843     gppi(sesskey, "BugPKSessID2", 0, &i); cfg->sshbug_pksessid2 = 2-i;
 844     gppi(sesskey, "BugRekey2", 0, &i); cfg->sshbug_rekey2 = 2-i;
 845     gppi(sesskey, "BugMaxPkt2", 0, &i); cfg->sshbug_maxpkt2 = 2-i;
 846     cfg->ssh_simple = FALSE;
 847     gppi(sesskey, "StampUtmp", 1, &cfg->stamp_utmp);
 848     gppi(sesskey, "LoginShell", 1, &cfg->login_shell);
 849     gppi(sesskey, "ScrollbarOnLeft", 0, &cfg->scrollbar_on_left);
 850     gppi(sesskey, "ShadowBold", 0, &cfg->shadowbold);
 851     gppfont(sesskey, "BoldFont", &cfg->boldfont);
 852     gppfont(sesskey, "WideFont", &cfg->widefont);
 853     gppfont(sesskey, "WideBoldFont", &cfg->wideboldfont);
 854     gppi(sesskey, "ShadowBoldOffset", 1, &cfg->shadowboldoffset);
 855     gpps(sesskey, "SerialLine", "", cfg->serline, sizeof(cfg->serline));
 856     gppi(sesskey, "SerialSpeed", 9600, &cfg->serspeed);
 857     gppi(sesskey, "SerialDataBits", 8, &cfg->serdatabits);
 858     gppi(sesskey, "SerialStopHalfbits", 2, &cfg->serstopbits);
 859     gppi(sesskey, "SerialParity", SER_PAR_NONE, &cfg->serparity);
 860     gppi(sesskey, "SerialFlowControl", SER_FLOW_XONXOFF, &cfg->serflow);
 861 }
 862
 863 void do_defaults(char *session, Config * cfg)
 864 {
 865     load_settings(session, cfg);
 866 }
 867
 868 static int sessioncmp(const void *av, const void *bv)
 869 {
 870     const char *a = *(const char *const *) av;
 871     const char *b = *(const char *const *) bv;
 872
 873     /*
 874      * Alphabetical order, except that "Default Settings" is a
 875      * special case and comes first.
 876      */
 877     if (!strcmp(a, "Default Settings"))
 878         return -1;                     /* a comes first */
 879     if (!strcmp(b, "Default Settings"))
 880         return +1;                     /* b comes first */
 881     /*
 882      * FIXME: perhaps we should ignore the first & in determining
 883      * sort order.
 884      */
 885     return strcmp(a, b);               /* otherwise, compare normally */
 886 }
 887
 888 void get_sesslist(struct sesslist *list, int allocate)
 889 {
 890     char otherbuf[2048];
 891     int buflen, bufsize, i;
 892     char *p, *ret;
 893     void *handle;
 894
 895     if (allocate) {
 896
 897         buflen = bufsize = 0;
 898         list->buffer = NULL;
 899         if ((handle = enum_settings_start()) != NULL) {
 900             do {
 901                 ret = enum_settings_next(handle, otherbuf, sizeof(otherbuf));
 902                 if (ret) {
 903                     int len = strlen(otherbuf) + 1;
 904                     if (bufsize < buflen + len) {
 905                         bufsize = buflen + len + 2048;
 906                         list->buffer = sresize(list->buffer, bufsize, char);
 907                     }
 908                     strcpy(list->buffer + buflen, otherbuf);
 909                     buflen += strlen(list->buffer + buflen) + 1;
 910                 }
 911             } while (ret);
 912             enum_settings_finish(handle);
 913         }
 914         list->buffer = sresize(list->buffer, buflen + 1, char);
 915         list->buffer[buflen] = '\0';
 916
 917         /*
 918          * Now set up the list of sessions. Note that "Default
 919          * Settings" must always be claimed to exist, even if it
 920          * doesn't really.
 921          */
 922
 923         p = list->buffer;
 924         list->nsessions = 1;           /* "Default Settings" counts as one */
 925         while (*p) {
 926             if (strcmp(p, "Default Settings"))
 927                 list->nsessions++;
 928             while (*p)
 929                 p++;
 930             p++;
 931         }
 932
 933         list->sessions = snewn(list->nsessions + 1, char *);
 934         list->sessions[0] = "Default Settings";
 935         p = list->buffer;
 936         i = 1;
 937         while (*p) {
 938             if (strcmp(p, "Default Settings"))
 939                 list->sessions[i++] = p;
 940             while (*p)
 941                 p++;
 942             p++;
 943         }
 944
 945         qsort(list->sessions, i, sizeof(char *), sessioncmp);
 946     } else {
 947         sfree(list->buffer);
 948         sfree(list->sessions);
 949         list->buffer = NULL;
 950         list->sessions = NULL;
 951     }
 952 }