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