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