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