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, "AuthTIS", cfg->try_tis_auth);
 352     write_setting_i(sesskey, "AuthKI", cfg->try_ki_auth);
 353     write_setting_i(sesskey, "AuthGSSAPI", cfg->try_gssapi_auth);
 354     wprefs(sesskey, "GSSLibs", gsslibkeywords, ngsslibs,
 355            cfg->ssh_gsslist);
 356     write_setting_i(sesskey, "SshNoShell", cfg->ssh_no_shell);
 357     write_setting_i(sesskey, "SshProt", cfg->sshprot);
 358     write_setting_s(sesskey, "LogHost", cfg->loghost);
 359     write_setting_i(sesskey, "SSH2DES", cfg->ssh2_des_cbc);
 360     write_setting_filename(sesskey, "PublicKeyFile", cfg->keyfile);
 361     write_setting_s(sesskey, "RemoteCommand", cfg->remote_cmd);
 362     write_setting_i(sesskey, "RFCEnviron", cfg->rfc_environ);
 363     write_setting_i(sesskey, "PassiveTelnet", cfg->passive_telnet);
 364     write_setting_i(sesskey, "BackspaceIsDelete", cfg->bksp_is_delete);
 365     write_setting_i(sesskey, "RXVTHomeEnd", cfg->rxvt_homeend);
 366     write_setting_i(sesskey, "LinuxFunctionKeys", cfg->funky_type);
 367     write_setting_i(sesskey, "NoApplicationKeys", cfg->no_applic_k);
 368     write_setting_i(sesskey, "NoApplicationCursors", cfg->no_applic_c);
 369     write_setting_i(sesskey, "NoMouseReporting", cfg->no_mouse_rep);
 370     write_setting_i(sesskey, "NoRemoteResize", cfg->no_remote_resize);
 371     write_setting_i(sesskey, "NoAltScreen", cfg->no_alt_screen);
 372     write_setting_i(sesskey, "NoRemoteWinTitle", cfg->no_remote_wintitle);
 373     write_setting_i(sesskey, "RemoteQTitleAction", cfg->remote_qtitle_action);
 374     write_setting_i(sesskey, "NoDBackspace", cfg->no_dbackspace);
 375     write_setting_i(sesskey, "NoRemoteCharset", cfg->no_remote_charset);
 376     write_setting_i(sesskey, "ApplicationCursorKeys", cfg->app_cursor);
 377     write_setting_i(sesskey, "ApplicationKeypad", cfg->app_keypad);
 378     write_setting_i(sesskey, "NetHackKeypad", cfg->nethack_keypad);
 379     write_setting_i(sesskey, "AltF4", cfg->alt_f4);
 380     write_setting_i(sesskey, "AltSpace", cfg->alt_space);
 381     write_setting_i(sesskey, "AltOnly", cfg->alt_only);
 382     write_setting_i(sesskey, "ComposeKey", cfg->compose_key);
 383     write_setting_i(sesskey, "CtrlAltKeys", cfg->ctrlaltkeys);
 384     write_setting_i(sesskey, "TelnetKey", cfg->telnet_keyboard);
 385     write_setting_i(sesskey, "TelnetRet", cfg->telnet_newline);
 386     write_setting_i(sesskey, "LocalEcho", cfg->localecho);
 387     write_setting_i(sesskey, "LocalEdit", cfg->localedit);
 388     write_setting_s(sesskey, "Answerback", cfg->answerback);
 389     write_setting_i(sesskey, "AlwaysOnTop", cfg->alwaysontop);
 390     write_setting_i(sesskey, "FullScreenOnAltEnter", cfg->fullscreenonaltenter);
 391     write_setting_i(sesskey, "HideMousePtr", cfg->hide_mouseptr);
 392     write_setting_i(sesskey, "SunkenEdge", cfg->sunken_edge);
 393     write_setting_i(sesskey, "WindowBorder", cfg->window_border);
 394     write_setting_i(sesskey, "CurType", cfg->cursor_type);
 395     write_setting_i(sesskey, "BlinkCur", cfg->blink_cur);
 396     write_setting_i(sesskey, "Beep", cfg->beep);
 397     write_setting_i(sesskey, "BeepInd", cfg->beep_ind);
 398     write_setting_filename(sesskey, "BellWaveFile", cfg->bell_wavefile);
 399     write_setting_i(sesskey, "BellOverload", cfg->bellovl);
 400     write_setting_i(sesskey, "BellOverloadN", cfg->bellovl_n);
 401     write_setting_i(sesskey, "BellOverloadT", cfg->bellovl_t
 402 #ifdef PUTTY_UNIX_H
 403                     * 1000
 404 #endif
 405                     );
 406     write_setting_i(sesskey, "BellOverloadS", cfg->bellovl_s
 407 #ifdef PUTTY_UNIX_H
 408                     * 1000
 409 #endif
 410                     );
 411     write_setting_i(sesskey, "ScrollbackLines", cfg->savelines);
 412     write_setting_i(sesskey, "DECOriginMode", cfg->dec_om);
 413     write_setting_i(sesskey, "AutoWrapMode", cfg->wrap_mode);
 414     write_setting_i(sesskey, "LFImpliesCR", cfg->lfhascr);
 415     write_setting_i(sesskey, "CRImpliesLF", cfg->crhaslf);
 416     write_setting_i(sesskey, "DisableArabicShaping", cfg->arabicshaping);
 417     write_setting_i(sesskey, "DisableBidi", cfg->bidi);
 418     write_setting_i(sesskey, "WinNameAlways", cfg->win_name_always);
 419     write_setting_s(sesskey, "WinTitle", cfg->wintitle);
 420     write_setting_i(sesskey, "TermWidth", cfg->width);
 421     write_setting_i(sesskey, "TermHeight", cfg->height);
 422     write_setting_fontspec(sesskey, "Font", cfg->font);
 423     write_setting_i(sesskey, "FontQuality", cfg->font_quality);
 424     write_setting_i(sesskey, "FontVTMode", cfg->vtmode);
 425     write_setting_i(sesskey, "UseSystemColours", cfg->system_colour);
 426     write_setting_i(sesskey, "TryPalette", cfg->try_palette);
 427     write_setting_i(sesskey, "ANSIColour", cfg->ansi_colour);
 428     write_setting_i(sesskey, "Xterm256Colour", cfg->xterm_256_colour);
 429     write_setting_i(sesskey, "BoldAsColour", cfg->bold_colour);
 430
 431     for (i = 0; i < 22; i++) {
 432         char buf[20], buf2[30];
 433         sprintf(buf, "Colour%d", i);
 434         sprintf(buf2, "%d,%d,%d", cfg->colours[i][0],
 435                 cfg->colours[i][1], cfg->colours[i][2]);
 436         write_setting_s(sesskey, buf, buf2);
 437     }
 438     write_setting_i(sesskey, "RawCNP", cfg->rawcnp);
 439     write_setting_i(sesskey, "PasteRTF", cfg->rtf_paste);
 440     write_setting_i(sesskey, "MouseIsXterm", cfg->mouse_is_xterm);
 441     write_setting_i(sesskey, "RectSelect", cfg->rect_select);
 442     write_setting_i(sesskey, "MouseOverride", cfg->mouse_override);
 443     for (i = 0; i < 256; i += 32) {
 444         char buf[20], buf2[256];
 445         int j;
 446         sprintf(buf, "Wordness%d", i);
 447         *buf2 = '\0';
 448         for (j = i; j < i + 32; j++) {
 449             sprintf(buf2 + strlen(buf2), "%s%d",
 450                     (*buf2 ? "," : ""), cfg->wordness[j]);
 451         }
 452         write_setting_s(sesskey, buf, buf2);
 453     }
 454     write_setting_s(sesskey, "LineCodePage", cfg->line_codepage);
 455     write_setting_i(sesskey, "CJKAmbigWide", cfg->cjk_ambig_wide);
 456     write_setting_i(sesskey, "UTF8Override", cfg->utf8_override);
 457     write_setting_s(sesskey, "Printer", cfg->printer);
 458     write_setting_i(sesskey, "CapsLockCyr", cfg->xlat_capslockcyr);
 459     write_setting_i(sesskey, "ScrollBar", cfg->scrollbar);
 460     write_setting_i(sesskey, "ScrollBarFullScreen", cfg->scrollbar_in_fullscreen);
 461     write_setting_i(sesskey, "ScrollOnKey", cfg->scroll_on_key);
 462     write_setting_i(sesskey, "ScrollOnDisp", cfg->scroll_on_disp);
 463     write_setting_i(sesskey, "EraseToScrollback", cfg->erase_to_scrollback);
 464     write_setting_i(sesskey, "LockSize", cfg->resize_action);
 465     write_setting_i(sesskey, "BCE", cfg->bce);
 466     write_setting_i(sesskey, "BlinkText", cfg->blinktext);
 467     write_setting_i(sesskey, "X11Forward", cfg->x11_forward);
 468     write_setting_s(sesskey, "X11Display", cfg->x11_display);
 469     write_setting_i(sesskey, "X11AuthType", cfg->x11_auth);
 470     write_setting_filename(sesskey, "X11AuthFile", cfg->xauthfile);
 471     write_setting_i(sesskey, "LocalPortAcceptAll", cfg->lport_acceptall);
 472     write_setting_i(sesskey, "RemotePortAcceptAll", cfg->rport_acceptall);
 473     wmap(sesskey, "PortForwardings", cfg->portfwd, lenof(cfg->portfwd));
 474     write_setting_i(sesskey, "BugIgnore1", 2-cfg->sshbug_ignore1);
 475     write_setting_i(sesskey, "BugPlainPW1", 2-cfg->sshbug_plainpw1);
 476     write_setting_i(sesskey, "BugRSA1", 2-cfg->sshbug_rsa1);
 477     write_setting_i(sesskey, "BugIgnore2", 2-cfg->sshbug_ignore2);
 478     write_setting_i(sesskey, "BugHMAC2", 2-cfg->sshbug_hmac2);
 479     write_setting_i(sesskey, "BugDeriveKey2", 2-cfg->sshbug_derivekey2);
 480     write_setting_i(sesskey, "BugRSAPad2", 2-cfg->sshbug_rsapad2);
 481     write_setting_i(sesskey, "BugPKSessID2", 2-cfg->sshbug_pksessid2);
 482     write_setting_i(sesskey, "BugRekey2", 2-cfg->sshbug_rekey2);
 483     write_setting_i(sesskey, "BugMaxPkt2", 2-cfg->sshbug_maxpkt2);
 484     write_setting_i(sesskey, "StampUtmp", cfg->stamp_utmp);
 485     write_setting_i(sesskey, "LoginShell", cfg->login_shell);
 486     write_setting_i(sesskey, "ScrollbarOnLeft", cfg->scrollbar_on_left);
 487     write_setting_fontspec(sesskey, "BoldFont", cfg->boldfont);
 488     write_setting_fontspec(sesskey, "WideFont", cfg->widefont);
 489     write_setting_fontspec(sesskey, "WideBoldFont", cfg->wideboldfont);
 490     write_setting_i(sesskey, "ShadowBold", cfg->shadowbold);
 491     write_setting_i(sesskey, "ShadowBoldOffset", cfg->shadowboldoffset);
 492     write_setting_s(sesskey, "SerialLine", cfg->serline);
 493     write_setting_i(sesskey, "SerialSpeed", cfg->serspeed);
 494     write_setting_i(sesskey, "SerialDataBits", cfg->serdatabits);
 495     write_setting_i(sesskey, "SerialStopHalfbits", cfg->serstopbits);
 496     write_setting_i(sesskey, "SerialParity", cfg->serparity);
 497     write_setting_i(sesskey, "SerialFlowControl", cfg->serflow);
 498 }
 499
 500 void load_settings(char *section, Config * cfg)
 501 {
 502     void *sesskey;
 503
 504     sesskey = open_settings_r(section);
 505     load_open_settings(sesskey, cfg);
 506     close_settings_r(sesskey);
 507 }
 508
 509 void load_open_settings(void *sesskey, Config *cfg)
 510 {
 511     int i;
 512     char prot[10];
 513
 514     cfg->ssh_subsys = 0;               /* FIXME: load this properly */
 515     cfg->remote_cmd_ptr = NULL;
 516     cfg->remote_cmd_ptr2 = NULL;
 517     cfg->ssh_nc_host[0] = '\0';
 518
 519     gpps(sesskey, "HostName", "", cfg->host, sizeof(cfg->host));
 520     gppfile(sesskey, "LogFileName", &cfg->logfilename);
 521     gppi(sesskey, "LogType", 0, &cfg->logtype);
 522     gppi(sesskey, "LogFileClash", LGXF_ASK, &cfg->logxfovr);
 523     gppi(sesskey, "LogFlush", 1, &cfg->logflush);
 524     gppi(sesskey, "SSHLogOmitPasswords", 1, &cfg->logomitpass);
 525     gppi(sesskey, "SSHLogOmitData", 0, &cfg->logomitdata);
 526
 527     gpps(sesskey, "Protocol", "default", prot, 10);
 528     cfg->protocol = default_protocol;
 529     cfg->port = default_port;
 530     {
 531         const Backend *b = backend_from_name(prot);
 532         if (b) {
 533             cfg->protocol = b->protocol;
 534             gppi(sesskey, "PortNumber", default_port, &cfg->port);
 535         }
 536     }
 537
 538     /* Address family selection */
 539     gppi(sesskey, "AddressFamily", ADDRTYPE_UNSPEC, &cfg->addressfamily);
 540
 541     /* The CloseOnExit numbers are arranged in a different order from
 542      * the standard FORCE_ON / FORCE_OFF / AUTO. */
 543     gppi(sesskey, "CloseOnExit", 1, &i); cfg->close_on_exit = (i+1)%3;
 544     gppi(sesskey, "WarnOnClose", 1, &cfg->warn_on_close);
 545     {
 546         /* This is two values for backward compatibility with 0.50/0.51 */
 547         int pingmin, pingsec;
 548         gppi(sesskey, "PingInterval", 0, &pingmin);
 549         gppi(sesskey, "PingIntervalSecs", 0, &pingsec);
 550         cfg->ping_interval = pingmin * 60 + pingsec;
 551     }
 552     gppi(sesskey, "TCPNoDelay", 1, &cfg->tcp_nodelay);
 553     gppi(sesskey, "TCPKeepalives", 0, &cfg->tcp_keepalives);
 554     gpps(sesskey, "TerminalType", "xterm", cfg->termtype,
 555          sizeof(cfg->termtype));
 556     gpps(sesskey, "TerminalSpeed", "38400,38400", cfg->termspeed,
 557          sizeof(cfg->termspeed));
 558     {
 559         /* This hardcodes a big set of defaults in any new saved
 560          * sessions. Let's hope we don't change our mind. */
 561         int i;
 562         char *def = dupstr("");
 563         /* Default: all set to "auto" */
 564         for (i = 0; ttymodes[i]; i++) {
 565             char *def2 = dupprintf("%s%s=A,", def, ttymodes[i]);
 566             sfree(def);
 567             def = def2;
 568         }
 569         gppmap(sesskey, "TerminalModes", def,
 570                cfg->ttymodes, lenof(cfg->ttymodes));
 571         sfree(def);
 572     }
 573
 574     /* proxy settings */
 575     gpps(sesskey, "ProxyExcludeList", "", cfg->proxy_exclude_list,
 576          sizeof(cfg->proxy_exclude_list));
 577     gppi(sesskey, "ProxyDNS", 1, &i); cfg->proxy_dns = (i+1)%3;
 578     gppi(sesskey, "ProxyLocalhost", 0, &cfg->even_proxy_localhost);
 579     gppi(sesskey, "ProxyMethod", -1, &cfg->proxy_type);
 580     if (cfg->proxy_type == -1) {
 581         int i;
 582         gppi(sesskey, "ProxyType", 0, &i);
 583         if (i == 0)
 584             cfg->proxy_type = PROXY_NONE;
 585         else if (i == 1)
 586             cfg->proxy_type = PROXY_HTTP;
 587         else if (i == 3)
 588             cfg->proxy_type = PROXY_TELNET;
 589         else if (i == 4)
 590             cfg->proxy_type = PROXY_CMD;
 591         else {
 592             gppi(sesskey, "ProxySOCKSVersion", 5, &i);
 593             if (i == 5)
 594                 cfg->proxy_type = PROXY_SOCKS5;
 595             else
 596                 cfg->proxy_type = PROXY_SOCKS4;
 597         }
 598     }
 599     gpps(sesskey, "ProxyHost", "proxy", cfg->proxy_host,
 600          sizeof(cfg->proxy_host));
 601     gppi(sesskey, "ProxyPort", 80, &cfg->proxy_port);
 602     gpps(sesskey, "ProxyUsername", "", cfg->proxy_username,
 603          sizeof(cfg->proxy_username));
 604     gpps(sesskey, "ProxyPassword", "", cfg->proxy_password,
 605          sizeof(cfg->proxy_password));
 606     gpps(sesskey, "ProxyTelnetCommand", "connect %host %port\\n",
 607          cfg->proxy_telnet_command, sizeof(cfg->proxy_telnet_command));
 608     gppmap(sesskey, "Environment", "", cfg->environmt, lenof(cfg->environmt));
 609     gpps(sesskey, "UserName", "", cfg->username, sizeof(cfg->username));
 610     gppi(sesskey, "UserNameFromEnvironment", 0, &cfg->username_from_env);
 611     gpps(sesskey, "LocalUserName", "", cfg->localusername,
 612          sizeof(cfg->localusername));
 613     gppi(sesskey, "NoPTY", 0, &cfg->nopty);
 614     gppi(sesskey, "Compression", 0, &cfg->compression);
 615     gppi(sesskey, "TryAgent", 1, &cfg->tryagent);
 616     gppi(sesskey, "AgentFwd", 0, &cfg->agentfwd);
 617     gppi(sesskey, "ChangeUsername", 0, &cfg->change_username);
 618     gppi(sesskey, "GssapiFwd", 0, &cfg->gssapifwd);
 619     gprefs(sesskey, "Cipher", "\0",
 620            ciphernames, CIPHER_MAX, cfg->ssh_cipherlist);
 621     {
 622         /* Backward-compatibility: we used to have an option to
 623          * disable gex under the "bugs" panel after one report of
 624          * a server which offered it then choked, but we never got
 625          * a server version string or any other reports. */
 626         char *default_kexes;
 627         gppi(sesskey, "BugDHGEx2", 0, &i); i = 2-i;
 628         if (i == FORCE_ON)
 629             default_kexes = "dh-group14-sha1,dh-group1-sha1,rsa,WARN,dh-gex-sha1";
 630         else
 631             default_kexes = "dh-gex-sha1,dh-group14-sha1,dh-group1-sha1,rsa,WARN";
 632         gprefs(sesskey, "KEX", default_kexes,
 633                kexnames, KEX_MAX, cfg->ssh_kexlist);
 634     }
 635     gppi(sesskey, "RekeyTime", 60, &cfg->ssh_rekey_time);
 636     gpps(sesskey, "RekeyBytes", "1G", cfg->ssh_rekey_data,
 637          sizeof(cfg->ssh_rekey_data));
 638     gppi(sesskey, "SshProt", 2, &cfg->sshprot);
 639     gpps(sesskey, "LogHost", "", cfg->loghost, sizeof(cfg->loghost));
 640     gppi(sesskey, "SSH2DES", 0, &cfg->ssh2_des_cbc);
 641     gppi(sesskey, "SshNoAuth", 0, &cfg->ssh_no_userauth);
 642     gppi(sesskey, "AuthTIS", 0, &cfg->try_tis_auth);
 643     gppi(sesskey, "AuthKI", 1, &cfg->try_ki_auth);
 644     gppi(sesskey, "AuthGSSAPI", 1, &cfg->try_gssapi_auth);
 645     gprefs(sesskey, "GSSLibs", "\0",
 646            gsslibkeywords, ngsslibs, cfg->ssh_gsslist);
 647     gppi(sesskey, "SshNoShell", 0, &cfg->ssh_no_shell);
 648     gppfile(sesskey, "PublicKeyFile", &cfg->keyfile);
 649     gpps(sesskey, "RemoteCommand", "", cfg->remote_cmd,
 650          sizeof(cfg->remote_cmd));
 651     gppi(sesskey, "RFCEnviron", 0, &cfg->rfc_environ);
 652     gppi(sesskey, "PassiveTelnet", 0, &cfg->passive_telnet);
 653     gppi(sesskey, "BackspaceIsDelete", 1, &cfg->bksp_is_delete);
 654     gppi(sesskey, "RXVTHomeEnd", 0, &cfg->rxvt_homeend);
 655     gppi(sesskey, "LinuxFunctionKeys", 0, &cfg->funky_type);
 656     gppi(sesskey, "NoApplicationKeys", 0, &cfg->no_applic_k);
 657     gppi(sesskey, "NoApplicationCursors", 0, &cfg->no_applic_c);
 658     gppi(sesskey, "NoMouseReporting", 0, &cfg->no_mouse_rep);
 659     gppi(sesskey, "NoRemoteResize", 0, &cfg->no_remote_resize);
 660     gppi(sesskey, "NoAltScreen", 0, &cfg->no_alt_screen);
 661     gppi(sesskey, "NoRemoteWinTitle", 0, &cfg->no_remote_wintitle);
 662     {
 663         /* Backward compatibility */
 664         int no_remote_qtitle;
 665         gppi(sesskey, "NoRemoteQTitle", 1, &no_remote_qtitle);
 666         /* We deliberately interpret the old setting of "no response" as
 667          * "empty string". This changes the behaviour, but hopefully for
 668          * the better; the user can always recover the old behaviour. */
 669         gppi(sesskey, "RemoteQTitleAction",
 670              no_remote_qtitle ? TITLE_EMPTY : TITLE_REAL,
 671              &cfg->remote_qtitle_action);
 672     }
 673     gppi(sesskey, "NoDBackspace", 0, &cfg->no_dbackspace);
 674     gppi(sesskey, "NoRemoteCharset", 0, &cfg->no_remote_charset);
 675     gppi(sesskey, "ApplicationCursorKeys", 0, &cfg->app_cursor);
 676     gppi(sesskey, "ApplicationKeypad", 0, &cfg->app_keypad);
 677     gppi(sesskey, "NetHackKeypad", 0, &cfg->nethack_keypad);
 678     gppi(sesskey, "AltF4", 1, &cfg->alt_f4);
 679     gppi(sesskey, "AltSpace", 0, &cfg->alt_space);
 680     gppi(sesskey, "AltOnly", 0, &cfg->alt_only);
 681     gppi(sesskey, "ComposeKey", 0, &cfg->compose_key);
 682     gppi(sesskey, "CtrlAltKeys", 1, &cfg->ctrlaltkeys);
 683     gppi(sesskey, "TelnetKey", 0, &cfg->telnet_keyboard);
 684     gppi(sesskey, "TelnetRet", 1, &cfg->telnet_newline);
 685     gppi(sesskey, "LocalEcho", AUTO, &cfg->localecho);
 686     gppi(sesskey, "LocalEdit", AUTO, &cfg->localedit);
 687     gpps(sesskey, "Answerback", "PuTTY", cfg->answerback,
 688          sizeof(cfg->answerback));
 689     gppi(sesskey, "AlwaysOnTop", 0, &cfg->alwaysontop);
 690     gppi(sesskey, "FullScreenOnAltEnter", 0, &cfg->fullscreenonaltenter);
 691     gppi(sesskey, "HideMousePtr", 0, &cfg->hide_mouseptr);
 692     gppi(sesskey, "SunkenEdge", 0, &cfg->sunken_edge);
 693     gppi(sesskey, "WindowBorder", 1, &cfg->window_border);
 694     gppi(sesskey, "CurType", 0, &cfg->cursor_type);
 695     gppi(sesskey, "BlinkCur", 0, &cfg->blink_cur);
 696     /* pedantic compiler tells me I can't use &cfg->beep as an int * :-) */
 697     gppi(sesskey, "Beep", 1, &cfg->beep);
 698     gppi(sesskey, "BeepInd", 0, &cfg->beep_ind);
 699     gppfile(sesskey, "BellWaveFile", &cfg->bell_wavefile);
 700     gppi(sesskey, "BellOverload", 1, &cfg->bellovl);
 701     gppi(sesskey, "BellOverloadN", 5, &cfg->bellovl_n);
 702     gppi(sesskey, "BellOverloadT", 2*TICKSPERSEC
 703 #ifdef PUTTY_UNIX_H
 704                                    *1000
 705 #endif
 706                                    , &i);
 707     cfg->bellovl_t = i
 708 #ifdef PUTTY_UNIX_H
 709                     / 1000
 710 #endif
 711         ;
 712     gppi(sesskey, "BellOverloadS", 5*TICKSPERSEC
 713 #ifdef PUTTY_UNIX_H
 714                                    *1000
 715 #endif
 716                                    , &i);
 717     cfg->bellovl_s = i
 718 #ifdef PUTTY_UNIX_H
 719                     / 1000
 720 #endif
 721         ;
 722     gppi(sesskey, "ScrollbackLines", 200, &cfg->savelines);
 723     gppi(sesskey, "DECOriginMode", 0, &cfg->dec_om);
 724     gppi(sesskey, "AutoWrapMode", 1, &cfg->wrap_mode);
 725     gppi(sesskey, "LFImpliesCR", 0, &cfg->lfhascr);
 726     gppi(sesskey, "CRImpliesLF", 0, &cfg->crhaslf);
 727     gppi(sesskey, "DisableArabicShaping", 0, &cfg->arabicshaping);
 728     gppi(sesskey, "DisableBidi", 0, &cfg->bidi);
 729     gppi(sesskey, "WinNameAlways", 1, &cfg->win_name_always);
 730     gpps(sesskey, "WinTitle", "", cfg->wintitle, sizeof(cfg->wintitle));
 731     gppi(sesskey, "TermWidth", 80, &cfg->width);
 732     gppi(sesskey, "TermHeight", 24, &cfg->height);
 733     gppfont(sesskey, "Font", &cfg->font);
 734     gppi(sesskey, "FontQuality", FQ_DEFAULT, &cfg->font_quality);
 735     gppi(sesskey, "FontVTMode", VT_UNICODE, (int *) &cfg->vtmode);
 736     gppi(sesskey, "UseSystemColours", 0, &cfg->system_colour);
 737     gppi(sesskey, "TryPalette", 0, &cfg->try_palette);
 738     gppi(sesskey, "ANSIColour", 1, &cfg->ansi_colour);
 739     gppi(sesskey, "Xterm256Colour", 1, &cfg->xterm_256_colour);
 740     gppi(sesskey, "BoldAsColour", 1, &cfg->bold_colour);
 741
 742     for (i = 0; i < 22; i++) {
 743         static const char *const defaults[] = {
 744             "187,187,187", "255,255,255", "0,0,0", "85,85,85", "0,0,0",
 745             "0,255,0", "0,0,0", "85,85,85", "187,0,0", "255,85,85",
 746             "0,187,0", "85,255,85", "187,187,0", "255,255,85", "0,0,187",
 747             "85,85,255", "187,0,187", "255,85,255", "0,187,187",
 748             "85,255,255", "187,187,187", "255,255,255"
 749         };
 750         char buf[20], buf2[30];
 751         int c0, c1, c2;
 752         sprintf(buf, "Colour%d", i);
 753         gpps(sesskey, buf, defaults[i], buf2, sizeof(buf2));
 754         if (sscanf(buf2, "%d,%d,%d", &c0, &c1, &c2) == 3) {
 755             cfg->colours[i][0] = c0;
 756             cfg->colours[i][1] = c1;
 757             cfg->colours[i][2] = c2;
 758         }
 759     }
 760     gppi(sesskey, "RawCNP", 0, &cfg->rawcnp);
 761     gppi(sesskey, "PasteRTF", 0, &cfg->rtf_paste);
 762     gppi(sesskey, "MouseIsXterm", 0, &cfg->mouse_is_xterm);
 763     gppi(sesskey, "RectSelect", 0, &cfg->rect_select);
 764     gppi(sesskey, "MouseOverride", 1, &cfg->mouse_override);
 765     for (i = 0; i < 256; i += 32) {
 766         static const char *const defaults[] = {
 767             "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",
 768             "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",
 769             "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",
 770             "1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1",
 771             "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",
 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             "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",
 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         };
 776         char buf[20], buf2[256], *p;
 777         int j;
 778         sprintf(buf, "Wordness%d", i);
 779         gpps(sesskey, buf, defaults[i / 32], buf2, sizeof(buf2));
 780         p = buf2;
 781         for (j = i; j < i + 32; j++) {
 782             char *q = p;
 783             while (*p && *p != ',')
 784                 p++;
 785             if (*p == ',')
 786                 *p++ = '\0';
 787             cfg->wordness[j] = atoi(q);
 788         }
 789     }
 790     /*
 791      * The empty default for LineCodePage will be converted later
 792      * into a plausible default for the locale.
 793      */
 794     gpps(sesskey, "LineCodePage", "", cfg->line_codepage,
 795          sizeof(cfg->line_codepage));
 796     gppi(sesskey, "CJKAmbigWide", 0, &cfg->cjk_ambig_wide);
 797     gppi(sesskey, "UTF8Override", 1, &cfg->utf8_override);
 798     gpps(sesskey, "Printer", "", cfg->printer, sizeof(cfg->printer));
 799     gppi (sesskey, "CapsLockCyr", 0, &cfg->xlat_capslockcyr);
 800     gppi(sesskey, "ScrollBar", 1, &cfg->scrollbar);
 801     gppi(sesskey, "ScrollBarFullScreen", 0, &cfg->scrollbar_in_fullscreen);
 802     gppi(sesskey, "ScrollOnKey", 0, &cfg->scroll_on_key);
 803     gppi(sesskey, "ScrollOnDisp", 1, &cfg->scroll_on_disp);
 804     gppi(sesskey, "EraseToScrollback", 1, &cfg->erase_to_scrollback);
 805     gppi(sesskey, "LockSize", 0, &cfg->resize_action);
 806     gppi(sesskey, "BCE", 1, &cfg->bce);
 807     gppi(sesskey, "BlinkText", 0, &cfg->blinktext);
 808     gppi(sesskey, "X11Forward", 0, &cfg->x11_forward);
 809     gpps(sesskey, "X11Display", "", cfg->x11_display,
 810          sizeof(cfg->x11_display));
 811     gppi(sesskey, "X11AuthType", X11_MIT, &cfg->x11_auth);
 812     gppfile(sesskey, "X11AuthFile", &cfg->xauthfile);
 813
 814     gppi(sesskey, "LocalPortAcceptAll", 0, &cfg->lport_acceptall);
 815     gppi(sesskey, "RemotePortAcceptAll", 0, &cfg->rport_acceptall);
 816     gppmap(sesskey, "PortForwardings", "", cfg->portfwd, lenof(cfg->portfwd));
 817     gppi(sesskey, "BugIgnore1", 0, &i); cfg->sshbug_ignore1 = 2-i;
 818     gppi(sesskey, "BugPlainPW1", 0, &i); cfg->sshbug_plainpw1 = 2-i;
 819     gppi(sesskey, "BugRSA1", 0, &i); cfg->sshbug_rsa1 = 2-i;
 820     gppi(sesskey, "BugIgnore2", 0, &i); cfg->sshbug_ignore2 = 2-i;
 821     {
 822         int i;
 823         gppi(sesskey, "BugHMAC2", 0, &i); cfg->sshbug_hmac2 = 2-i;
 824         if (cfg->sshbug_hmac2 == AUTO) {
 825             gppi(sesskey, "BuggyMAC", 0, &i);
 826             if (i == 1)
 827                 cfg->sshbug_hmac2 = FORCE_ON;
 828         }
 829     }
 830     gppi(sesskey, "BugDeriveKey2", 0, &i); cfg->sshbug_derivekey2 = 2-i;
 831     gppi(sesskey, "BugRSAPad2", 0, &i); cfg->sshbug_rsapad2 = 2-i;
 832     gppi(sesskey, "BugPKSessID2", 0, &i); cfg->sshbug_pksessid2 = 2-i;
 833     gppi(sesskey, "BugRekey2", 0, &i); cfg->sshbug_rekey2 = 2-i;
 834     gppi(sesskey, "BugMaxPkt2", 0, &i); cfg->sshbug_maxpkt2 = 2-i;
 835     cfg->ssh_simple = FALSE;
 836     gppi(sesskey, "StampUtmp", 1, &cfg->stamp_utmp);
 837     gppi(sesskey, "LoginShell", 1, &cfg->login_shell);
 838     gppi(sesskey, "ScrollbarOnLeft", 0, &cfg->scrollbar_on_left);
 839     gppi(sesskey, "ShadowBold", 0, &cfg->shadowbold);
 840     gppfont(sesskey, "BoldFont", &cfg->boldfont);
 841     gppfont(sesskey, "WideFont", &cfg->widefont);
 842     gppfont(sesskey, "WideBoldFont", &cfg->wideboldfont);
 843     gppi(sesskey, "ShadowBoldOffset", 1, &cfg->shadowboldoffset);
 844     gpps(sesskey, "SerialLine", "", cfg->serline, sizeof(cfg->serline));
 845     gppi(sesskey, "SerialSpeed", 9600, &cfg->serspeed);
 846     gppi(sesskey, "SerialDataBits", 8, &cfg->serdatabits);
 847     gppi(sesskey, "SerialStopHalfbits", 2, &cfg->serstopbits);
 848     gppi(sesskey, "SerialParity", SER_PAR_NONE, &cfg->serparity);
 849     gppi(sesskey, "SerialFlowControl", SER_FLOW_XONXOFF, &cfg->serflow);
 850 }
 851
 852 void do_defaults(char *session, Config * cfg)
 853 {
 854     load_settings(session, cfg);
 855 }
 856
 857 static int sessioncmp(const void *av, const void *bv)
 858 {
 859     const char *a = *(const char *const *) av;
 860     const char *b = *(const char *const *) bv;
 861
 862     /*
 863      * Alphabetical order, except that "Default Settings" is a
 864      * special case and comes first.
 865      */
 866     if (!strcmp(a, "Default Settings"))
 867         return -1;                     /* a comes first */
 868     if (!strcmp(b, "Default Settings"))
 869         return +1;                     /* b comes first */
 870     /*
 871      * FIXME: perhaps we should ignore the first & in determining
 872      * sort order.
 873      */
 874     return strcmp(a, b);               /* otherwise, compare normally */
 875 }
 876
 877 void get_sesslist(struct sesslist *list, int allocate)
 878 {
 879     char otherbuf[2048];
 880     int buflen, bufsize, i;
 881     char *p, *ret;
 882     void *handle;
 883
 884     if (allocate) {
 885
 886         buflen = bufsize = 0;
 887         list->buffer = NULL;
 888         if ((handle = enum_settings_start()) != NULL) {
 889             do {
 890                 ret = enum_settings_next(handle, otherbuf, sizeof(otherbuf));
 891                 if (ret) {
 892                     int len = strlen(otherbuf) + 1;
 893                     if (bufsize < buflen + len) {
 894                         bufsize = buflen + len + 2048;
 895                         list->buffer = sresize(list->buffer, bufsize, char);
 896                     }
 897                     strcpy(list->buffer + buflen, otherbuf);
 898                     buflen += strlen(list->buffer + buflen) + 1;
 899                 }
 900             } while (ret);
 901             enum_settings_finish(handle);
 902         }
 903         list->buffer = sresize(list->buffer, buflen + 1, char);
 904         list->buffer[buflen] = '\0';
 905
 906         /*
 907          * Now set up the list of sessions. Note that "Default
 908          * Settings" must always be claimed to exist, even if it
 909          * doesn't really.
 910          */
 911
 912         p = list->buffer;
 913         list->nsessions = 1;           /* "Default Settings" counts as one */
 914         while (*p) {
 915             if (strcmp(p, "Default Settings"))
 916                 list->nsessions++;
 917             while (*p)
 918                 p++;
 919             p++;
 920         }
 921
 922         list->sessions = snewn(list->nsessions + 1, char *);
 923         list->sessions[0] = "Default Settings";
 924         p = list->buffer;
 925         i = 1;
 926         while (*p) {
 927             if (strcmp(p, "Default Settings"))
 928                 list->sessions[i++] = p;
 929             while (*p)
 930                 p++;
 931             p++;
 932         }
 933
 934         qsort(list->sessions, i, sizeof(char *), sessioncmp);
 935     } else {
 936         sfree(list->buffer);
 937         sfree(list->sessions);
 938         list->buffer = NULL;
 939         list->sessions = NULL;
 940     }
 941 }