webcit/preferences.c

   1 /*
   2  * $Id$
   3  *
   4  * Manage user preferences with a little help from the Citadel server.
   5  *
   6  */
   7
   8 #include "webcit.h"
   9 #include "webserver.h"
  10 #include "groupdav.h"
  11
  12 HashList *PreferenceHooks;
  13
  14 typedef struct _PrefDef {
  15         long Type;
  16         StrBuf *Setting;
  17         const char *PrefStr;
  18         PrefEvalFunc OnLoad;
  19 } PrefDef;
  20
  21 typedef struct _Preference {
  22         StrBuf *Key;
  23         StrBuf *Val;
  24         PrefDef *Type;
  25
  26         long lval;
  27         long decoded;
  28         StrBuf *DeQPed;
  29 }Preference;
  30
  31 void DestroyPrefDef(void *vPrefDef)
  32 {
  33         PrefDef *Prefdef = (PrefDef*) vPrefDef;
  34         FreeStrBuf(&Prefdef->Setting);
  35         free(Prefdef);
  36 }
  37
  38 void DestroyPreference(void *vPref)
  39 {
  40         Preference *Pref = (Preference*) vPref;
  41         FreeStrBuf(&Pref->Key);
  42         FreeStrBuf(&Pref->Val);
  43         FreeStrBuf(&Pref->DeQPed);
  44         free(Pref);
  45
  46 }
  47 void RegisterPreference(const char *Setting, long SettingLen,
  48                         const char *PrefStr,
  49                         long Type,
  50                         PrefEvalFunc OnLoad)
  51 {
  52         PrefDef *Newpref = (PrefDef*) malloc(sizeof(PrefDef));
  53         Newpref->Setting = NewStrBufPlain(Setting, SettingLen);
  54         Newpref->PrefStr = PrefStr;
  55         Newpref->Type = Type;
  56         Newpref->OnLoad = OnLoad;
  57         Put(PreferenceHooks, Setting, SettingLen, Newpref, DestroyPrefDef);
  58 }
  59
  60 const char *PrefGetLocalStr(const char *Setting, long len)
  61 {
  62         void *hash_value;
  63         if (GetHash(PreferenceHooks, Setting, len, &hash_value) != 0) {
  64                 PrefDef *Newpref = (PrefDef*) hash_value;
  65                 return _(Newpref->PrefStr);
  66
  67         }
  68         return "";
  69 }
  70
  71 #ifdef DBG_PREFS_HASH
  72 inline const char *PrintPref(void *vPref)
  73 {
  74         Preference *Pref = (Preference*) vPref;
  75         if (Pref->DeQPed != NULL)
  76                 return ChrPtr(Pref->DeQPed);
  77         else
  78                 return ChrPtr(Pref->Val);
  79 }
  80 #endif
  81
  82 void GetPrefTypes(HashList *List)
  83 {
  84         HashPos *It;
  85         long len;
  86         const char *Key;
  87         void *vSetting;
  88         void *vPrefDef;
  89         Preference *Setting;
  90         PrefDef *PrefType;
  91
  92         It = GetNewHashPos(List, 0);
  93         while (GetNextHashPos(List, It, &len, &Key, &vSetting))
  94         {
  95                 Setting = (Preference*) vSetting;
  96                 if (GetHash(PreferenceHooks, SKEY(Setting->Key), &vPrefDef) &&
  97                     (vPrefDef != NULL))
  98                 {
  99                         PrefType = (PrefDef*) vPrefDef;
 100                         Setting->Type = PrefType;
 101                         if (PrefType->OnLoad != NULL)
 102                                 PrefType->OnLoad(Setting->Val, Setting->lval);
 103                 }
 104         }
 105 }
 106
 107 void ParsePref(HashList **List, StrBuf *ReadBuf)
 108 {
 109         StrBuf *Key;
 110         Preference *Data = NULL;
 111         Preference *LastData = NULL;
 112
 113         Key = NewStrBuf();
 114         while (StrBuf_ServGetln(ReadBuf),
 115                strcmp(ChrPtr(ReadBuf), "000"))
 116         {
 117                 if ((ChrPtr(ReadBuf)[0] == ' ') &&
 118                     (Data != NULL)) {
 119                         StrBufAppendBuf(Data->Val, ReadBuf, 1);
 120                 }
 121                 else {
 122                         LastData = Data = malloc(sizeof(Preference));
 123                         memset(Data, 0, sizeof(Preference));
 124                         StrBufExtract_token(Data->Key, ReadBuf, 0, '|');
 125                         StrBufExtract_token(Data->Val, ReadBuf, 1, '|');
 126                         if (!IsEmptyStr(ChrPtr(Data->Key)))
 127                         {
 128                                 Put(*List,
 129                                     SKEY(Data->Key),
 130                                     Data,
 131                                     DestroyPreference);
 132                         }
 133                         else
 134                         {
 135                                 StrBufTrim(ReadBuf);
 136                                 lprintf(1, "ignoring spurious preference line: [%s]\n",
 137                                         ChrPtr(ReadBuf));
 138                                 DestroyPreference(Data);
 139                                 LastData = NULL;
 140                         }
 141                 }
 142         }
 143         GetPrefTypes(*List);
 144 }
 145
 146
 147 /*
 148  * display preferences dialog
 149  */
 150 void load_preferences(void)
 151 {
 152         StrBuf *ReadBuf;
 153         char buf[SIZ];
 154         long msgnum = 0L;
 155
 156         if (!goto_config_room())
 157                 return;
 158
 159         ReadBuf = NewStrBuf();
 160         serv_puts("MSGS ALL|0|1");
 161         StrBuf_ServGetln(ReadBuf);
 162         if (GetServerStatus(ReadBuf, NULL) == 8) {
 163                 serv_puts("subj|__ WebCit Preferences __");
 164                 serv_puts("000");
 165         }
 166         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 167                 msgnum = atol(buf);
 168         }
 169
 170         if (msgnum > 0L) {
 171                 serv_printf("MSG0 %ld", msgnum);
 172                 StrBuf_ServGetln(ReadBuf);
 173                 if (GetServerStatus(ReadBuf, NULL) == 1) {
 174                         while (StrBuf_ServGetln(ReadBuf),
 175                                (strcmp(ChrPtr(ReadBuf), "text") &&
 176                                 strcmp(ChrPtr(ReadBuf), "000"))) {
 177                         }
 178                         if (!strcmp(ChrPtr(ReadBuf), "text")) {
 179                                 ParsePref(&WC->hash_prefs, ReadBuf);
 180                         }
 181                 }
 182         }
 183
 184         /* Go back to the room we're supposed to be in */
 185         serv_printf("GOTO %s", ChrPtr(WC->wc_roomname));
 186         StrBuf_ServGetln(ReadBuf);
 187         GetServerStatus(ReadBuf, NULL);
 188         FreeStrBuf(&ReadBuf);
 189 }
 190
 191 /**
 192  * \brief Goto the user's configuration room, creating it if necessary.
 193  * \return 0 on success or nonzero upon failure.
 194  */
 195 int goto_config_room(void) {
 196         char buf[SIZ];
 197
 198         serv_printf("GOTO %s", USERCONFIGROOM);
 199         serv_getln(buf, sizeof buf);
 200         if (buf[0] != '2') { /* try to create the config room if not there */
 201                 serv_printf("CRE8 1|%s|4|0", USERCONFIGROOM);
 202                 serv_getln(buf, sizeof buf);
 203                 serv_printf("GOTO %s", USERCONFIGROOM);
 204                 serv_getln(buf, sizeof buf);
 205                 if (buf[0] != '2') return(1);
 206         }
 207         return(0);
 208 }
 209
 210 void WritePrefsToServer(HashList *Hash)
 211 {
 212         long len;
 213         HashPos *HashPos;
 214         void *vPref;
 215         const char *Key;
 216         Preference *Pref;
 217         StrBuf *SubBuf = NULL;
 218
 219         Hash = WC->hash_prefs;
 220 #ifdef DBG_PREFS_HASH
 221         dbg_PrintHash(Hash, PrintPref, NULL);
 222 #endif
 223         HashPos = GetNewHashPos(Hash, 0);
 224         while (GetNextHashPos(Hash, HashPos, &len, &Key, &vPref)!=0)
 225         {
 226                 size_t nchars;
 227                 if (vPref == NULL)
 228                         continue;
 229                 Pref = (Preference*) vPref;
 230                 nchars = StrLength(Pref->Val);
 231                 if (nchars > 80){
 232                         int n = 0;
 233                         size_t offset, nchars;
 234                         if (SubBuf == NULL)
 235                                 SubBuf = NewStrBuf();
 236                         nchars = 1;
 237                         offset = 0;
 238                         while (nchars > 0) {
 239                                 if (n == 0)
 240                                         nchars = 70;
 241                                 else
 242                                         nchars = 80;
 243
 244                                 nchars = StrBufSub(SubBuf, Pref->Val, offset, nchars);
 245
 246                                 if (n == 0)
 247                                         serv_printf("%s|%s", ChrPtr(Pref->Key), ChrPtr(SubBuf));
 248                                 else
 249                                         serv_printf(" %s", ChrPtr(SubBuf));
 250
 251                                 offset += nchars;
 252                                 nchars = StrLength(Pref->Val) - offset;
 253                                 n++;
 254                         }
 255
 256                 }
 257                 else
 258                         serv_printf("%s|%s", ChrPtr(Pref->Key), ChrPtr(Pref->Val));
 259
 260         }
 261         FreeStrBuf(&SubBuf);
 262         DeleteHashPos(&HashPos);
 263 }
 264
 265 /**
 266  * \brief save the modifications
 267  */
 268 void save_preferences(void)
 269 {
 270         char buf[SIZ];
 271         long msgnum = 0L;
 272
 273         if (goto_config_room() != 0) return;    /* oh well. */
 274         serv_puts("MSGS ALL|0|1");
 275         serv_getln(buf, sizeof buf);
 276         if (buf[0] == '8') {
 277                 serv_puts("subj|__ WebCit Preferences __");
 278                 serv_puts("000");
 279         }
 280         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 281                 msgnum = atol(buf);
 282         }
 283
 284         if (msgnum > 0L) {
 285                 serv_printf("DELE %ld", msgnum);
 286                 serv_getln(buf, sizeof buf);
 287         }
 288
 289         serv_printf("ENT0 1||0|1|__ WebCit Preferences __|");
 290         serv_getln(buf, sizeof buf);
 291         if (buf[0] == '4') {
 292
 293                 WritePrefsToServer(WC->hash_prefs);
 294                 serv_puts("");
 295                 serv_puts("000");
 296         }
 297
 298         /** Go back to the room we're supposed to be in */
 299         serv_printf("GOTO %s", ChrPtr(WC->wc_roomname));
 300         serv_getln(buf, sizeof buf);
 301 }
 302
 303 /**
 304  * \brief query the actual setting of key in the citadel database
 305  * \param key config key to query
 306  * \param keylen length of the key string
 307  * \param value StrBuf-value to the key to get
 308  * \returns found?
 309  */
 310 int get_pref_backend(const char *key, size_t keylen, Preference **Pref)
 311 {
 312         void *hash_value = NULL;
 313 #ifdef DBG_PREFS_HASH
 314         dbg_PrintHash(WC->hash_prefs, PrintPref, NULL);
 315 #endif
 316         if (GetHash(WC->hash_prefs, key, keylen, &hash_value) == 0) {
 317                 *Pref = NULL;
 318                 return 0;
 319         }
 320         else {
 321                 *Pref = (Preference*) hash_value;
 322                 return 1;
 323         }
 324 }
 325
 326 int get_PREFERENCE(const char *key, size_t keylen, StrBuf **value)
 327 {
 328         Preference *Pref;
 329         int Ret;
 330
 331         Ret = get_pref_backend(key, keylen, &Pref);
 332         if (Ret != 0)
 333                 *value = Pref->Val;
 334         else
 335                 *value = NULL;
 336         return Ret;
 337 }
 338
 339 /**
 340  * \brief       Write a key into the webcit preferences database for this user
 341  *
 342  * \params      key             key whichs value is to be modified
 343  * \param keylen length of the key string
 344  * \param       value           value to set
 345  * \param       save_to_server  1 = flush all data to the server, 0 = cache it for now
 346  */
 347 void set_preference_backend(const char *key, size_t keylen,
 348                             long lvalue,
 349                             StrBuf *value,
 350                             long lPrefType,
 351                             int save_to_server,
 352                             PrefDef *PrefType)
 353 {
 354         void *vPrefDef;
 355         Preference *Pref;
 356
 357         Pref = (Preference*) malloc(sizeof(Preference));
 358         memset(Pref, 0, sizeof(Preference));
 359         Pref->Key = NewStrBufPlain(key, keylen);
 360
 361         if ((PrefType == NULL) &&
 362             GetHash(PreferenceHooks, SKEY(Pref->Key), &vPrefDef) &&
 363             (vPrefDef != NULL))
 364                 PrefType = (PrefDef*) vPrefDef;
 365
 366         if (PrefType != NULL)
 367         {
 368                 Pref->Type = PrefType;
 369                 if (Pref->Type->Type != lPrefType)
 370                         lprintf(1, "warning: saving preference with wrong type [%s] %ld != %ld \n",
 371                                 key, Pref->Type->Type, lPrefType);
 372                 switch (Pref->Type->Type)
 373                 {
 374                 case PRF_STRING:
 375                         Pref->Val = value;
 376                         Pref->decoded = 1;
 377                         break;
 378                 case PRF_INT:
 379                         Pref->lval = lvalue;
 380                         Pref->Val = value;
 381                         if (Pref->Val == NULL)
 382                                 Pref->Val = NewStrBufPlain(NULL, 64);
 383                         StrBufPrintf(Pref->Val, "%ld", lvalue);
 384                         Pref->decoded = 1;
 385                         break;
 386                 case PRF_QP_STRING:
 387                         Pref->DeQPed = value;
 388                         Pref->Val = NewStrBufPlain(NULL, StrLength(Pref->DeQPed) * 3);
 389                         StrBufEUid_escapize(Pref->Val, Pref->DeQPed);
 390                         Pref->decoded = 1;
 391                         break;
 392                 case PRF_YESNO:
 393                         Pref->lval = lvalue;
 394                         if (lvalue)
 395                                 Pref->Val = NewStrBufPlain(HKEY("yes"));
 396                         else
 397                                 Pref->Val = NewStrBufPlain(HKEY("no"));
 398                         Pref->decoded = 1;
 399                         break;
 400                 }
 401                 if (Pref->Type->OnLoad != NULL)
 402                         Pref->Type->OnLoad(Pref->Val, Pref->lval);
 403         }
 404         else {
 405                 switch (lPrefType)
 406                 {
 407                 case PRF_STRING:
 408                         Pref->Val = value;
 409                         Pref->decoded = 1;
 410                         break;
 411                 case PRF_INT:
 412                         Pref->lval = lvalue;
 413                         Pref->Val = value;
 414                         if (Pref->Val == NULL)
 415                                 Pref->Val = NewStrBufPlain(NULL, 64);
 416                         StrBufPrintf(Pref->Val, "%ld", lvalue);
 417                         Pref->decoded = 1;
 418                         break;
 419                 case PRF_QP_STRING:
 420                         Pref->DeQPed = value;
 421                         Pref->Val = NewStrBufPlain(NULL, StrLength(Pref->DeQPed) * 3);
 422                         StrBufEUid_escapize(Pref->Val, Pref->DeQPed);
 423                         Pref->decoded = 1;
 424                         break;
 425                 case PRF_YESNO:
 426                         Pref->lval = lvalue;
 427                         if (lvalue)
 428                                 Pref->Val = NewStrBufPlain(HKEY("yes"));
 429                         else
 430                                 Pref->Val = NewStrBufPlain(HKEY("no"));
 431                         Pref->decoded = 1;
 432                         break;
 433                 }
 434         }
 435         Put(WC->hash_prefs, key, keylen, Pref, DestroyPreference);
 436
 437         if (save_to_server) WC->SavePrefsToServer = 1;
 438 }
 439
 440 void set_PREFERENCE(const char *key, size_t keylen, StrBuf *value, int save_to_server)
 441 {
 442         set_preference_backend(key, keylen, 0, value, PRF_STRING, save_to_server, NULL);
 443 }
 444
 445 int get_PREF_LONG(const char *key, size_t keylen, long *value, long Default)
 446 {
 447         Preference *Pref;
 448         int Ret;
 449
 450         Ret = get_pref_backend(key, keylen, &Pref);
 451         if (Ret == 0) {
 452                 *value = Default;
 453                 return 0;
 454         }
 455
 456         if (Pref->decoded)
 457                 *value = Pref->lval;
 458         else {
 459                 *value = Pref->lval = atol(ChrPtr(Pref->Val));
 460                 Pref->decoded = 1;
 461         }
 462         return Ret;
 463 }
 464
 465
 466 void set_PREF_LONG(const char *key, size_t keylen, long value, int save_to_server)
 467 {
 468         set_preference_backend(key, keylen, value, NULL, PRF_INT, save_to_server, NULL);
 469 }
 470
 471 int get_PREF_YESNO(const char *key, size_t keylen, int *value, int Default)
 472 {
 473         Preference *Pref;
 474         int Ret;
 475
 476         Ret = get_pref_backend(key, keylen, &Pref);
 477         if (Ret == 0) {
 478                 *value = Default;
 479                 return 0;
 480         }
 481
 482         if (Pref->decoded)
 483                 *value = Pref->lval;
 484         else {
 485                 *value = Pref->lval = strcmp(ChrPtr(Pref->Val), "yes") == 0;
 486                 Pref->decoded = 1;
 487         }
 488         return Ret;
 489 }
 490
 491 void set_PREF_YESNO(const char *key, size_t keylen, long value, int save_to_server)
 492 {
 493         set_preference_backend(key, keylen, value, NULL, PRF_YESNO, save_to_server, NULL);
 494 }
 495
 496 int get_room_prefs_backend(const char *key, size_t keylen, Preference **Pref)
 497 {
 498         StrBuf *pref_name;
 499         int Ret;
 500
 501         pref_name = NewStrBuf ();
 502         StrBufPrintf(pref_name, "%s:%s", key, ChrPtr(WC->wc_roomname));
 503         Ret = get_pref_backend(SKEY(pref_name), Pref);
 504         FreeStrBuf(&pref_name);
 505
 506         return Ret;
 507 }
 508
 509 StrBuf *get_ROOM_PREFS(const char *key, size_t keylen)
 510 {
 511         Preference *Pref;
 512         int Ret;
 513
 514         Ret = get_room_prefs_backend(key, keylen, &Pref);
 515
 516         if (Ret == 0) {
 517                 return NULL;
 518         }
 519         else
 520                 return Pref->Val;
 521 }
 522
 523 void set_ROOM_PREFS(const char *key, size_t keylen, StrBuf *value, int save_to_server)
 524 {
 525         StrBuf *pref_name;
 526
 527         pref_name = NewStrBuf ();
 528         StrBufPrintf(pref_name, "%s:%s", key, ChrPtr(WC->wc_roomname));
 529         set_preference_backend(SKEY(pref_name), 0, value, PRF_STRING, save_to_server, NULL);
 530         FreeStrBuf(&pref_name);
 531 }
 532
 533
 534 void GetPreferences(HashList *Setting)
 535 {
 536         wcsession *WCC = WC;
 537         HashPos *It;
 538         long len;
 539         const char *Key;
 540         void *vSetting;
 541         PrefDef *PrefType;
 542         StrBuf *Buf;
 543         long lval;
 544         HashList *Tmp;
 545
 546         Tmp = WCC->hash_prefs;
 547         WCC->hash_prefs = Setting;
 548
 549         It = GetNewHashPos(PreferenceHooks, 0);
 550         while (GetNextHashPos(PreferenceHooks, It, &len, &Key, &vSetting)) {
 551                 PrefType = (PrefDef*) vSetting;
 552
 553                 if (!HaveBstr(SKEY(PrefType->Setting)))
 554                         continue;
 555                 switch (PrefType->Type) {
 556                 case PRF_STRING:
 557                         Buf = NewStrBufDup(SBstr(SKEY(PrefType->Setting)));
 558                         set_preference_backend(SKEY(PrefType->Setting),
 559                                                0,
 560                                                Buf,
 561                                                PRF_STRING,
 562                                                1,
 563                                                PrefType);
 564                         break;
 565                 case PRF_INT:
 566                         lval = LBstr(SKEY(PrefType->Setting));
 567                         set_preference_backend(SKEY(PrefType->Setting),
 568                                                lval,
 569                                                NULL,
 570                                                PRF_INT,
 571                                                1,
 572                                                PrefType);
 573                         break;
 574                 case PRF_QP_STRING:
 575                         Buf = NewStrBufDup(SBstr(SKEY(PrefType->Setting)));
 576                         set_preference_backend(SKEY(PrefType->Setting),
 577                                                0,
 578                                                Buf,
 579                                                PRF_QP_STRING,
 580                                                1,
 581                                                PrefType);
 582                         break;
 583                 case PRF_YESNO:
 584                         lval = YesBstr(SKEY(PrefType->Setting));
 585                         set_preference_backend(SKEY(PrefType->Setting),
 586                                                lval,
 587                                                NULL,
 588                                                PRF_YESNO,
 589                                                1,
 590                                                PrefType);
 591                         break;
 592                 }
 593         }
 594         WCC->hash_prefs = Tmp;
 595 }
 596
 597
 598 /**
 599  * \brief Commit new preferences and settings
 600  */
 601 void set_preferences(void)
 602 {
 603         if (!havebstr("change_button")) {
 604                 safestrncpy(WC->ImportantMessage,
 605                             _("Cancelled.  No settings were changed."),
 606                             sizeof WC->ImportantMessage);
 607                 display_main_menu();
 608                 return;
 609         }
 610         GetPreferences(WC->hash_prefs);
 611         display_main_menu();
 612 }
 613
 614
 615 void tmplput_CFG_Value(StrBuf *Target, WCTemplputParams *TP)
 616 {
 617         Preference *Pref;
 618         if (get_pref_backend(TKEY(0), &Pref))
 619         {
 620                 if (Pref->Type == NULL) {
 621                         StrBufAppendTemplate(Target, TP, Pref->Val, 1);
 622                 }
 623                 switch (Pref->Type->Type)
 624                 {
 625                 case PRF_STRING:
 626                         StrBufAppendTemplate(Target, TP, Pref->Val, 1);
 627                         break;
 628                 case PRF_INT:
 629                         if (Pref->decoded != 1) {
 630                                 if (Pref->Val == NULL)
 631                                         Pref->Val = NewStrBufPlain(NULL, 64);
 632                                 StrBufPrintf(Pref->Val, "%ld", Pref->lval);
 633                                 Pref->decoded = 1;
 634                         }
 635                         StrBufAppendTemplate(Target, TP, Pref->Val, 1);
 636                         break;
 637                 case PRF_QP_STRING:
 638                         if (Pref->decoded != 1) {
 639                                 if (Pref->DeQPed == NULL)
 640                                         Pref->DeQPed = NewStrBufPlain(NULL, StrLength(Pref->Val));
 641
 642                                 StrBufEUid_unescapize(Pref->DeQPed, Pref->Val);
 643                                 Pref->decoded = 1;
 644                         }
 645                         StrBufAppendTemplate(Target, TP, Pref->DeQPed, 1);
 646                         break;
 647                 case PRF_YESNO:
 648                         if (Pref->decoded != 1) {
 649                                 Pref->lval = strcmp(ChrPtr(Pref->Val), "yes") == 0;
 650                                 Pref->decoded = 1;
 651                         }
 652                         StrBufAppendTemplate(Target, TP, Pref->Val, 1);
 653                         break;
 654                 }
 655         }
 656 }
 657
 658 void tmplput_CFG_Descr(StrBuf *Target, WCTemplputParams *TP)
 659 {
 660         const char *SettingStr;
 661         SettingStr = PrefGetLocalStr(TKEY(0));
 662         if (SettingStr != NULL)
 663                 StrBufAppendBufPlain(Target, SettingStr, -1, 0);
 664 }
 665 void tmplput_CFG_RoomValue(StrBuf *Target, WCTemplputParams *TP)
 666 {
 667         StrBuf *pref = get_ROOM_PREFS(TKEY(0));
 668         if (pref != NULL)
 669                 StrBufAppendBuf(Target, pref, 0);
 670 }
 671 int ConditionalHasRoomPreference(StrBuf *Target, WCTemplputParams *TP)
 672 {
 673         if (get_ROOM_PREFS(TP->Tokens->Params[0]->Start,
 674                            TP->Tokens->Params[0]->len) != NULL)
 675                 return 1;
 676
 677         return 0;
 678 }
 679 void CfgZoneTempl(StrBuf *TemplBuffer, WCTemplputParams *TP)
 680 {
 681         StrBuf *Zone = (StrBuf*) CTX;
 682
 683         SVPutBuf("ZONENAME", Zone, 1);
 684 }
 685
 686 int ConditionalPreference(StrBuf *Target, WCTemplputParams *TP)
 687 {
 688         StrBuf *Pref;
 689
 690         if (!get_PREFERENCE(TKEY(2), &Pref))
 691                 return 0;
 692
 693         if (TP->Tokens->nParameters == 3) {
 694                 return 1;
 695         }
 696         else if (TP->Tokens->Params[3]->Type == TYPE_STR)
 697                 return ((TP->Tokens->Params[3]->len == StrLength(Pref)) &&
 698                         (strcmp(TP->Tokens->Params[3]->Start, ChrPtr(Pref)) == 0));
 699         else
 700                 return (StrTol(Pref) == TP->Tokens->Params[3]->lvalue);
 701 }
 702
 703 int ConditionalHasPreference(StrBuf *Target, WCTemplputParams *TP)
 704 {
 705         StrBuf *Pref;
 706
 707         if (!get_PREFERENCE(TKEY(2), &Pref) ||
 708             (Pref == NULL))
 709                 return 0;
 710         else
 711                 return 1;
 712 }
 713
 714
 715 /********************************************************************************
 716  *                 preferences stored discrete in citserver
 717  ********************************************************************************/
 718 HashList *GetGVEAHash(StrBuf *Target, WCTemplputParams *TP)
 719 {
 720         StrBuf *Rcp;
 721         HashList *List = NULL;
 722         int Done = 0;
 723         int i, n = 1;
 724         char N[64];
 725
 726         Rcp = NewStrBuf();
 727         serv_puts("GVEA");
 728         StrBuf_ServGetln(Rcp);
 729         if (GetServerStatus(Rcp, NULL) == 1) {
 730                 FlushStrBuf(Rcp);
 731                 List = NewHash(1, NULL);
 732                 while (!Done && (StrBuf_ServGetln(Rcp)>=0)) {
 733                         if ( (StrLength(Rcp)==3) &&
 734                              !strcmp(ChrPtr(Rcp), "000"))
 735                         {
 736                                 Done = 1;
 737                         }
 738                         else {
 739                                 i = snprintf(N, sizeof(N), "%d", n);
 740                                 StrBufTrim(Rcp);
 741                                 Put(List, N, i, Rcp, HFreeStrBuf);
 742                                 Rcp = NewStrBuf();
 743                         }
 744                         n++;
 745                 }
 746         }
 747         FreeStrBuf(&Rcp);
 748         return List;
 749 }
 750 void DeleteGVEAHash(HashList **KillMe)
 751 {
 752         DeleteHash(KillMe);
 753 }
 754
 755 HashList *GetGVSNHash(StrBuf *Target, WCTemplputParams *TP)
 756 {
 757         StrBuf *Rcp;
 758         HashList *List = NULL;
 759         int Done = 0;
 760         int i, n = 1;
 761         char N[64];
 762
 763         Rcp = NewStrBuf();
 764         serv_puts("GVSN");
 765         StrBuf_ServGetln(Rcp);
 766         if (GetServerStatus(Rcp, NULL) == 1) {
 767                 FlushStrBuf(Rcp);
 768                 List = NewHash(1, NULL);
 769                 while (!Done && (StrBuf_ServGetln(Rcp)>=0)) {
 770                         if ( (StrLength(Rcp)==3) &&
 771                              !strcmp(ChrPtr(Rcp), "000"))
 772                         {
 773                                 Done = 1;
 774                         }
 775                         else {
 776                                 i = snprintf(N, sizeof(N), "%d", n);
 777                                 StrBufTrim(Rcp);
 778                                 Put(List, N, i, Rcp, HFreeStrBuf);
 779                                 Rcp = NewStrBuf();
 780                         }
 781                         n++;
 782                 }
 783         }
 784         FreeStrBuf(&Rcp);
 785         return List;
 786 }
 787 void DeleteGVSNHash(HashList **KillMe)
 788 {
 789         DeleteHash(KillMe);
 790 }
 791
 792
 793
 794
 795 /*
 796  * Offer to make any page the user's "start page."
 797  */
 798 void offer_start_page(StrBuf *Target, WCTemplputParams *TP)
 799 {
 800         wprintf("<a href=\"change_start_page?startpage=");
 801         urlescputs(WC->this_page);
 802         wprintf("\">");
 803         wprintf(_("Make this my start page"));
 804         wprintf("</a>");
 805 #ifdef TECH_PREVIEW
 806         wprintf("<br/><a href=\"rss?room=");
 807         urlescputs(ChrPtr(WC->wc_roomname));
 808         wprintf("\" title=\"RSS 2.0 feed for ");
 809         escputs(ChrPtr(WC->wc_roomname));
 810         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
 811 #endif
 812 }
 813
 814
 815 /*
 816  * Change the user's start page
 817  */
 818 void change_start_page(void)
 819 {
 820         if (!havebstr("startpage")) {
 821                 set_preference_backend(HKEY("startpage"),
 822                                        0,
 823                                        NewStrBufPlain(HKEY("")),
 824                                        PRF_STRING,
 825                                        1,
 826                                        NULL);
 827                 safestrncpy(WC->ImportantMessage,
 828                             _("You no longer have a start page selected."),
 829                             sizeof( WC->ImportantMessage));
 830                 display_main_menu();
 831                 return;
 832         }
 833
 834         set_preference_backend(HKEY("startpage"),
 835                                0,
 836                                NewStrBufDup(sbstr("startpage")),
 837                                PRF_STRING,
 838                                1,
 839                                NULL);
 840
 841         output_headers(1, 1, 0, 0, 0, 0);
 842         do_template("newstartpage", NULL);
 843         wDumpContent(1);
 844 }
 845
 846
 847 void
 848 InitModule_PREFERENCES
 849 (void)
 850 {
 851         WebcitAddUrlHandler(HKEY("set_preferences"), set_preferences, 0);
 852         WebcitAddUrlHandler(HKEY("change_start_page"), change_start_page, 0);
 853
 854
 855         RegisterNamespace("OFFERSTARTPAGE", 0, 0, offer_start_page, CTX_NONE);
 856         RegisterNamespace("PREF:ROOM:VALUE", 1, 2, tmplput_CFG_RoomValue,  CTX_NONE);
 857         RegisterNamespace("PREF:VALUE", 1, 2, tmplput_CFG_Value, CTX_NONE);
 858         RegisterNamespace("PREF:DESCR", 1, 1, tmplput_CFG_Descr, CTX_NONE);
 859         RegisterIterator("PREF:ZONE", 0, ZoneHash, NULL, CfgZoneTempl, NULL, CTX_PREF, CTX_NONE, IT_NOFLAG);
 860
 861         RegisterConditional(HKEY("COND:PREF"), 4, ConditionalPreference, CTX_NONE);
 862         RegisterConditional(HKEY("COND:PREF:SET"), 4, ConditionalHasPreference, CTX_NONE);
 863         RegisterConditional(HKEY("COND:ROOM:SET"), 4, ConditionalHasRoomPreference, CTX_NONE);
 864
 865         RegisterIterator("PREF:VALID:EMAIL:ADDR", 0, NULL,
 866                          GetGVEAHash, NULL, DeleteGVEAHash, CTX_STRBUF, CTX_NONE, IT_NOFLAG);
 867         RegisterIterator("PREF:VALID:EMAIL:NAME", 0, NULL,
 868                          GetGVSNHash, NULL, DeleteGVSNHash, CTX_STRBUF, CTX_NONE, IT_NOFLAG);
 869
 870 }
 871 /*@}*/