citadel/utillib/citadel_ipc.c

   1 /* $Id$
   2  *
   3  * Copyright (c) 1987-2009 by the citadel.org team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include "sysdep.h"
  21 #if TIME_WITH_SYS_TIME
  22 # include <sys/time.h>
  23 # include <time.h>
  24 #else
  25 # if HAVE_SYS_TIME_H
  26 #  include <sys/time.h>
  27 # else
  28 #  include <time.h>
  29 # endif
  30 #endif
  31 #include <unistd.h>
  32 #include <stdio.h>
  33 #include <sys/types.h>
  34 #include <string.h>
  35 #ifdef HAVE_MALLOC_H
  36 #include <malloc.h>
  37 #endif
  38 #include <stdlib.h>
  39 #include <ctype.h>
  40 #include <sys/socket.h>
  41 #include <arpa/inet.h>
  42 #include <netinet/in.h>
  43 #include <netdb.h>
  44 #include <sys/un.h>
  45 #include <errno.h>
  46 #ifdef THREADED_CLIENT
  47 #include <pthread.h>
  48 #endif
  49 #include <libcitadel.h>
  50 #include "citadel.h"
  51 #include "citadel_ipc.h"
  52 #include "citadel_decls.h"
  53 #include "citadel_dirs.h"
  54 #ifdef THREADED_CLIENT
  55 pthread_mutex_t rwlock;
  56 #endif
  57
  58 #ifdef HAVE_OPENSSL
  59 static SSL_CTX *ssl_ctx;
  60 char arg_encrypt;
  61 char rc_encrypt;
  62 #ifdef THREADED_CLIENT
  63 pthread_mutex_t **Critters;                     /* Things that need locking */
  64 #endif /* THREADED_CLIENT */
  65
  66 #endif /* HAVE_OPENSSL */
  67
  68 #ifndef INADDR_NONE
  69 #define INADDR_NONE 0xffffffff
  70 #endif
  71
  72 static void (*status_hook)(char *s) = NULL;
  73
  74 void setCryptoStatusHook(void (*hook)(char *s)) {
  75         status_hook = hook;
  76 }
  77
  78 void CtdlIPC_SetNetworkStatusCallback(CtdlIPC *ipc, void (*hook)(int state)) {
  79         ipc->network_status_cb = hook;
  80 }
  81
  82
  83 char instant_msgs = 0;
  84
  85
  86 static void serv_read(CtdlIPC *ipc, char *buf, unsigned int bytes);
  87 static void serv_write(CtdlIPC *ipc, const char *buf, unsigned int nbytes);
  88 #ifdef HAVE_OPENSSL
  89 static void serv_read_ssl(CtdlIPC *ipc, char *buf, unsigned int bytes);
  90 static void serv_write_ssl(CtdlIPC *ipc, const char *buf, unsigned int nbytes);
  91 static void endtls(SSL *ssl);
  92 #ifdef THREADED_CLIENT
  93 static unsigned long id_callback(void);
  94 #endif /* THREADED_CLIENT */
  95 #endif /* HAVE_OPENSSL */
  96 static void CtdlIPC_getline(CtdlIPC* ipc, char *buf);
  97 static void CtdlIPC_putline(CtdlIPC *ipc, const char *buf);
  98
  99
 100
 101 const char *svn_revision(void);
 102
 103 /*
 104  * Does nothing.  The server should always return 200.
 105  */
 106 int CtdlIPCNoop(CtdlIPC *ipc)
 107 {
 108         char aaa[128];
 109
 110         return CtdlIPCGenericCommand(ipc, "NOOP", NULL, 0, NULL, NULL, aaa);
 111 }
 112
 113
 114 /*
 115  * Does nothing interesting.  The server should always return 200
 116  * along with your string.
 117  */
 118 int CtdlIPCEcho(CtdlIPC *ipc, const char *arg, char *cret)
 119 {
 120         register int ret;
 121         char *aaa;
 122
 123         if (!arg) return -2;
 124         if (!cret) return -2;
 125
 126         aaa = (char *)malloc((size_t)(strlen(arg) + 6));
 127         if (!aaa) return -1;
 128
 129         sprintf(aaa, "ECHO %s", arg);
 130         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 131         free(aaa);
 132         return ret;
 133 }
 134
 135
 136 /*
 137  * Asks the server to close the connecction.
 138  * Should always return 200.
 139  */
 140 int CtdlIPCQuit(CtdlIPC *ipc)
 141 {
 142         register int ret = 221;         /* Default to successful quit */
 143         char aaa[SIZ];
 144
 145         CtdlIPC_lock(ipc);
 146         if (ipc->sock > -1) {
 147                 CtdlIPC_putline(ipc, "QUIT");
 148                 CtdlIPC_getline(ipc, aaa);
 149                 ret = atoi(aaa);
 150         }
 151 #ifdef HAVE_OPENSSL
 152         if (ipc->ssl)
 153                 SSL_shutdown(ipc->ssl);
 154         ipc->ssl = NULL;
 155 #endif
 156         if (ipc->sock)
 157                 shutdown(ipc->sock, 2); /* Close connection; we're dead */
 158         ipc->sock = -1;
 159         CtdlIPC_unlock(ipc);
 160         return ret;
 161 }
 162
 163
 164 /*
 165  * Asks the server to log out.  Should always return 200, even if no user
 166  * was logged in.  The user will not be logged in after this!
 167  */
 168 int CtdlIPCLogout(CtdlIPC *ipc)
 169 {
 170         register int ret;
 171         char aaa[SIZ];
 172
 173         CtdlIPC_lock(ipc);
 174         CtdlIPC_putline(ipc, "LOUT");
 175         CtdlIPC_getline(ipc, aaa);
 176         ret = atoi(aaa);
 177         CtdlIPC_unlock(ipc);
 178         return ret;
 179 }
 180
 181
 182 /*
 183  * First stage of authentication - pass the username.  Returns 300 if the
 184  * username is able to log in, with the username correctly spelled in cret.
 185  * Returns various 500 error codes if the user doesn't exist, etc.
 186  */
 187 int CtdlIPCTryLogin(CtdlIPC *ipc, const char *username, char *cret)
 188 {
 189         register int ret;
 190         char *aaa;
 191
 192         if (!username) return -2;
 193         if (!cret) return -2;
 194
 195         aaa = (char *)malloc((size_t)(strlen(username) + 6));
 196         if (!aaa) return -1;
 197
 198         sprintf(aaa, "USER %s", username);
 199         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 200         free(aaa);
 201         return ret;
 202 }
 203
 204
 205 /*
 206  * Second stage of authentication - provide password.  The server returns
 207  * 200 and several arguments in cret relating to the user's account.
 208  */
 209 int CtdlIPCTryPassword(CtdlIPC *ipc, const char *passwd, char *cret)
 210 {
 211         register int ret;
 212         char *aaa;
 213
 214         if (!passwd) return -2;
 215         if (!cret) return -2;
 216
 217         aaa = (char *)malloc((size_t)(strlen(passwd) + 6));
 218         if (!aaa) return -1;
 219
 220         sprintf(aaa, "PASS %s", passwd);
 221         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 222         free(aaa);
 223         return ret;
 224 }
 225
 226
 227 /*
 228  * Second stage of authentication - provide password.  The server returns
 229  * 200 and several arguments in cret relating to the user's account.
 230  */
 231 int CtdlIPCTryApopPassword(CtdlIPC *ipc, const char *response, char *cret)
 232 {
 233         register int ret;
 234         char *aaa;
 235
 236         if (!response) return -2;
 237         if (!cret) return -2;
 238
 239         aaa = (char *)malloc((size_t)(strlen(response) + 6));
 240         if (!aaa) return -1;
 241
 242         sprintf(aaa, "PAS2 %s", response);
 243         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 244         free(aaa);
 245         return ret;
 246 }
 247
 248
 249 /*
 250  * Create a new user.  This returns 200 plus the same arguments as TryPassword
 251  * if selfservice is nonzero, unless there was a problem creating the account.
 252  * If selfservice is zero, creates a new user but does not log out the existing
 253  * user - intended for use by system administrators to create accounts on
 254  * behalf of other users.
 255  */
 256 int CtdlIPCCreateUser(CtdlIPC *ipc, const char *username, int selfservice, char *cret)
 257 {
 258         register int ret;
 259         char *aaa;
 260
 261         if (!username) return -2;
 262         if (!cret) return -2;
 263
 264         aaa = (char *)malloc((size_t)(strlen(username) + 6));
 265         if (!aaa) return -1;
 266
 267         sprintf(aaa, "%s %s", selfservice ? "NEWU" : "CREU",  username);
 268         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 269         free(aaa);
 270         return ret;
 271 }
 272
 273
 274 /*
 275  * Changes the user's password.  Returns 200 if changed, errors otherwise.
 276  */
 277 int CtdlIPCChangePassword(CtdlIPC *ipc, const char *passwd, char *cret)
 278 {
 279         register int ret;
 280         char *aaa;
 281
 282         if (!passwd) return -2;
 283         if (!cret) return -2;
 284
 285         aaa = (char *)malloc((size_t)(strlen(passwd) + 6));
 286         if (!aaa) return -1;
 287
 288         sprintf(aaa, "SETP %s", passwd);
 289         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 290         free(aaa);
 291         return ret;
 292 }
 293
 294
 295 /* LKRN */
 296 /* Caller must free the march list */
 297 /* Room types are defined in enum RoomList; keep these in sync! */
 298 /* floor is -1 for all, or floornum */
 299 int CtdlIPCKnownRooms(CtdlIPC *ipc, enum RoomList which, int floor, struct march **listing, char *cret)
 300 {
 301         register int ret;
 302         struct march *march = NULL;
 303         static char *proto[] =
 304                 {"LKRA", "LKRN", "LKRO", "LZRM", "LRMS", "LPRM" };
 305         char aaa[SIZ];
 306         char *bbb = NULL;
 307         size_t bbb_len;
 308
 309         if (!listing) return -2;
 310         if (*listing) return -2;        /* Free the listing first */
 311         if (!cret) return -2;
 312         /* if (which < 0 || which > 4) return -2; */
 313         if (floor < -1) return -2;      /* Can't validate upper bound, sorry */
 314
 315         sprintf(aaa, "%s %d", proto[which], floor);
 316         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, &bbb, &bbb_len, cret);
 317         if (ret / 100 == 1) {
 318                 struct march *mptr;
 319
 320                 while (bbb && strlen(bbb)) {
 321                         int a;
 322
 323                         extract_token(aaa, bbb, 0, '\n', sizeof aaa);
 324                         a = strlen(aaa);
 325                         memmove(bbb, bbb + a + 1, strlen(bbb) - a);
 326                         mptr = (struct march *) malloc(sizeof (struct march));
 327                         if (mptr) {
 328                                 mptr->next = NULL;
 329                                 extract_token(mptr->march_name, aaa, 0, '|', sizeof mptr->march_name);
 330                                 mptr->march_flags = (unsigned int) extract_int(aaa, 1);
 331                                 mptr->march_floor = (char) extract_int(aaa, 2);
 332                                 mptr->march_order = (char) extract_int(aaa, 3);
 333                                 mptr->march_flags2 = (unsigned int) extract_int(aaa, 4);
 334                                 mptr->march_access = (char) extract_int(aaa, 5);
 335                                 if (march == NULL)
 336                                         march = mptr;
 337                                 else {
 338                                         struct march *mptr2;
 339
 340                                         mptr2 = march;
 341                                         while (mptr2->next != NULL)
 342                                                 mptr2 = mptr2->next;
 343                                         mptr2->next = mptr;
 344                                 }
 345                         }
 346                 }
 347         }
 348         *listing = march;
 349         if (bbb) free(bbb);
 350         return ret;
 351 }
 352
 353
 354 /* GETU */
 355 /* Caller must free the struct ctdluser; caller may pass an existing one */
 356 int CtdlIPCGetConfig(CtdlIPC *ipc, struct ctdluser **uret, char *cret)
 357 {
 358         register int ret;
 359
 360         if (!cret) return -2;
 361         if (!uret) return -2;
 362         if (!*uret) *uret = (struct ctdluser *)calloc(1, sizeof (struct ctdluser));
 363         if (!*uret) return -1;
 364
 365         ret = CtdlIPCGenericCommand(ipc, "GETU", NULL, 0, NULL, NULL, cret);
 366         if (ret / 100 == 2) {
 367                 uret[0]->USscreenwidth = extract_int(cret, 0);
 368                 uret[0]->USscreenheight = extract_int(cret, 1);
 369                 uret[0]->flags = extract_int(cret, 2);
 370         }
 371         return ret;
 372 }
 373
 374
 375 /* SETU */
 376 int CtdlIPCSetConfig(CtdlIPC *ipc, struct ctdluser *uret, char *cret)
 377 {
 378         char aaa[48];
 379
 380         if (!uret) return -2;
 381         if (!cret) return -2;
 382
 383         sprintf(aaa, "SETU %d|%d|%d",
 384                         uret->USscreenwidth, uret->USscreenheight,
 385                         uret->flags);
 386         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 387 }
 388
 389
 390 /* RENU */
 391 int CtdlIPCRenameUser(CtdlIPC *ipc, char *oldname, char *newname, char *cret)
 392 {
 393         register int ret;
 394         char cmd[256];
 395
 396         if (!oldname) return -2;
 397         if (!newname) return -2;
 398         if (!cret) return -2;
 399
 400         snprintf(cmd, sizeof cmd, "RENU %s|%s", oldname, newname);
 401         ret = CtdlIPCGenericCommand(ipc, cmd, NULL, 0, NULL, NULL, cret);
 402         return ret;
 403 }
 404
 405
 406 /* GOTO */
 407 int CtdlIPCGotoRoom(CtdlIPC *ipc, const char *room, const char *passwd,
 408                 struct ctdlipcroom **rret, char *cret)
 409 {
 410         register int ret;
 411         char *aaa;
 412
 413         if (!cret) return -2;
 414         if (!rret) return -2;
 415         if (!*rret) *rret = (struct ctdlipcroom *)calloc(1, sizeof (struct ctdlipcroom));
 416         if (!*rret) return -1;
 417
 418         if (passwd) {
 419                 aaa = (char *)malloc(strlen(room) + strlen(passwd) + 7);
 420                 if (!aaa) {
 421                         free(*rret);
 422                         return -1;
 423                 }
 424                 sprintf(aaa, "GOTO %s|%s", room, passwd);
 425         } else {
 426                 aaa = (char *)malloc(strlen(room) + 6);
 427                 if (!aaa) {
 428                         free(*rret);
 429                         return -1;
 430                 }
 431                 sprintf(aaa, "GOTO %s", room);
 432         }
 433         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 434         if (ret / 100 == 2) {
 435                 extract_token(rret[0]->RRname, cret, 0, '|', sizeof rret[0]->RRname);
 436                 rret[0]->RRunread = extract_long(cret, 1);
 437                 rret[0]->RRtotal = extract_long(cret, 2);
 438                 rret[0]->RRinfoupdated = extract_int(cret, 3);
 439                 rret[0]->RRflags = extract_int(cret, 4);
 440                 rret[0]->RRhighest = extract_long(cret, 5);
 441                 rret[0]->RRlastread = extract_long(cret, 6);
 442                 rret[0]->RRismailbox = extract_int(cret, 7);
 443                 rret[0]->RRaide = extract_int(cret, 8);
 444                 rret[0]->RRnewmail = extract_long(cret, 9);
 445                 rret[0]->RRfloor = extract_int(cret, 10);
 446                 rret[0]->RRcurrentview = extract_int(cret, 11);
 447                 rret[0]->RRdefaultview = extract_int(cret, 12);
 448                 /* position 13 is a trash folder flag ... irrelevant in this client */
 449                 rret[0]->RRflags2 = extract_int(cret, 14);
 450         } else {
 451                 free(*rret);
 452                 *rret = NULL;
 453         }
 454         free(aaa);
 455         return ret;
 456 }
 457
 458
 459 /* MSGS */
 460 /* which is 0 = all, 1 = old, 2 = new, 3 = last, 4 = first, 5 = gt, 6 = lt */
 461 /* whicharg is number of messages, applies to last, first, gt, lt */
 462 int CtdlIPCGetMessages(CtdlIPC *ipc, enum MessageList which, int whicharg,
 463                 const char *mtemplate, unsigned long **mret, char *cret)
 464 {
 465         register int ret;
 466         register unsigned long count = 0;
 467         static char *proto[] =
 468                 { "ALL", "OLD", "NEW", "LAST", "FIRST", "GT", "LT" };
 469         char aaa[33];
 470         char *bbb = NULL;
 471         size_t bbb_len;
 472
 473         if (!cret) return -2;
 474         if (!mret) return -2;
 475         if (*mret) return -2;
 476         if (which < 0 || which > 6) return -2;
 477
 478         if (which <= 2)
 479                 sprintf(aaa, "MSGS %s||%d", proto[which],
 480                                 (mtemplate) ? 1 : 0);
 481         else
 482                 sprintf(aaa, "MSGS %s|%d|%d", proto[which], whicharg,
 483                                 (mtemplate) ? 1 : 0);
 484         if (mtemplate) count = strlen(mtemplate);
 485         ret = CtdlIPCGenericCommand(ipc, aaa, mtemplate, count, &bbb, &bbb_len, cret);
 486         if (ret / 100 != 1)
 487                 return ret;
 488         count = 0;
 489         *mret = (unsigned long *)calloc(1, sizeof(unsigned long));
 490         if (!*mret)
 491                 return -1;
 492         while (bbb && strlen(bbb)) {
 493                 extract_token(aaa, bbb, 0, '\n', sizeof aaa);
 494                 remove_token(bbb, 0, '\n');
 495                 *mret = (unsigned long *)realloc(*mret, (size_t)((count + 2) *
 496                                         sizeof (unsigned long)));
 497                 if (*mret) {
 498                         (*mret)[count++] = atol(aaa);
 499                         (*mret)[count] = 0L;
 500                 } else {
 501                         break;
 502                 }
 503         }
 504         if (bbb) free(bbb);
 505         return ret;
 506 }
 507
 508
 509 /* MSG0, MSG2 */
 510 int CtdlIPCGetSingleMessage(CtdlIPC *ipc, long msgnum, int headers, int as_mime,
 511                 struct ctdlipcmessage **mret, char *cret)
 512 {
 513         register int ret;
 514         char aaa[SIZ];
 515         char *bbb = NULL;
 516         size_t bbb_len;
 517         int multipart_hunting = 0;
 518         char multipart_prefix[128];
 519         char encoding[256];
 520
 521         if (!cret) return -1;
 522         if (!mret) return -1;
 523         if (!*mret) *mret = (struct ctdlipcmessage *)calloc(1, sizeof (struct ctdlipcmessage));
 524         if (!*mret) return -1;
 525         if (!msgnum) return -1;
 526
 527         strcpy(encoding, "");
 528         strcpy(mret[0]->content_type, "");
 529         sprintf(aaa, "MSG%d %ld|%d", as_mime, msgnum, headers);
 530         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, &bbb, &bbb_len, cret);
 531         if (ret / 100 == 1) {
 532                 if (as_mime != 2) {
 533                         strcpy(mret[0]->mime_chosen, "1");      /* Default chosen-part is "1" */
 534                         while (strlen(bbb) > 4 && bbb[4] == '=') {
 535                                 extract_token(aaa, bbb, 0, '\n', sizeof aaa);
 536                                 remove_token(bbb, 0, '\n');
 537
 538                                 if (!strncasecmp(aaa, "nhdr=yes", 8))
 539                                         mret[0]->nhdr = 1;
 540                                 else if (!strncasecmp(aaa, "from=", 5))
 541                                         safestrncpy(mret[0]->author, &aaa[5], SIZ);
 542                                 else if (!strncasecmp(aaa, "type=", 5))
 543                                         mret[0]->type = atoi(&aaa[5]);
 544                                 else if (!strncasecmp(aaa, "msgn=", 5))
 545                                         safestrncpy(mret[0]->msgid, &aaa[5], SIZ);
 546                                 else if (!strncasecmp(aaa, "subj=", 5))
 547                                         safestrncpy(mret[0]->subject, &aaa[5], SIZ);
 548                                 else if (!strncasecmp(aaa, "rfca=", 5))
 549                                         safestrncpy(mret[0]->email, &aaa[5], SIZ);
 550                                 else if (!strncasecmp(aaa, "hnod=", 5))
 551                                         safestrncpy(mret[0]->hnod, &aaa[5], SIZ);
 552                                 else if (!strncasecmp(aaa, "room=", 5))
 553                                         safestrncpy(mret[0]->room, &aaa[5], SIZ);
 554                                 else if (!strncasecmp(aaa, "node=", 5))
 555                                         safestrncpy(mret[0]->node, &aaa[5], SIZ);
 556                                 else if (!strncasecmp(aaa, "rcpt=", 5))
 557                                         safestrncpy(mret[0]->recipient, &aaa[5], SIZ);
 558                                 else if (!strncasecmp(aaa, "wefw=", 5))
 559                                         safestrncpy(mret[0]->references, &aaa[5], SIZ);
 560                                 else if (!strncasecmp(aaa, "time=", 5))
 561                                         mret[0]->time = atol(&aaa[5]);
 562
 563                                 /* Multipart/alternative prefix & suffix strings help
 564                                  * us to determine which part we want to download.
 565                                  */
 566                                 else if (!strncasecmp(aaa, "pref=", 5)) {
 567                                         extract_token(multipart_prefix, &aaa[5], 1, '|', sizeof multipart_prefix);
 568                                         if (!strcasecmp(multipart_prefix,
 569                                            "multipart/alternative")) {
 570                                                 ++multipart_hunting;
 571                                         }
 572                                 }
 573                                 else if (!strncasecmp(aaa, "suff=", 5)) {
 574                                         extract_token(multipart_prefix, &aaa[5], 1, '|', sizeof multipart_prefix);
 575                                         if (!strcasecmp(multipart_prefix,
 576                                            "multipart/alternative")) {
 577                                                 ++multipart_hunting;
 578                                         }
 579                                 }
 580
 581                                 else if (!strncasecmp(aaa, "part=", 5)) {
 582                                         struct parts *ptr, *chain;
 583
 584                                         ptr = (struct parts *)calloc(1, sizeof (struct parts));
 585                                         if (ptr) {
 586
 587                                                 /* Fill the buffers for the caller */
 588                                                 extract_token(ptr->name, &aaa[5], 0, '|', sizeof ptr->name);
 589                                                 extract_token(ptr->filename, &aaa[5], 1, '|', sizeof ptr->filename);
 590                                                 extract_token(ptr->number, &aaa[5], 2, '|', sizeof ptr->number);
 591                                                 extract_token(ptr->disposition, &aaa[5], 3, '|', sizeof ptr->disposition);
 592                                                 extract_token(ptr->mimetype, &aaa[5], 4, '|', sizeof ptr->mimetype);
 593                                                 ptr->length = extract_long(&aaa[5], 5);
 594                                                 if (!mret[0]->attachments)
 595                                                         mret[0]->attachments = ptr;
 596                                                 else {
 597                                                         chain = mret[0]->attachments;
 598                                                         while (chain->next)
 599                                                                 chain = chain->next;
 600                                                         chain->next = ptr;
 601                                                 }
 602
 603                                                 /* Now handle multipart/alternative */
 604                                                 if (multipart_hunting > 0) {
 605                                                         if ( (!strcasecmp(ptr->mimetype,
 606                                                              "text/plain"))
 607                                                            || (!strcasecmp(ptr->mimetype,
 608                                                               "text/html")) ) {
 609                                                                 strcpy(mret[0]->mime_chosen,
 610                                                                         ptr->number);
 611                                                         }
 612                                                 }
 613
 614                                         }
 615                                 }
 616                         }
 617                         /* Eliminate "text\n" */
 618                         remove_token(bbb, 0, '\n');
 619
 620                         /* If doing a MIME thing, pull out the extra headers */
 621                         if (as_mime == 4) {
 622                                 do {
 623                                         if (!strncasecmp(bbb, "Content-type:", 13)) {
 624                                                 extract_token(mret[0]->content_type, bbb, 0, '\n', sizeof mret[0]->content_type);
 625                                                 strcpy(mret[0]->content_type, &mret[0]->content_type[13]);
 626                                                 striplt(mret[0]->content_type);
 627
 628                                                 /* strip out ";charset=" portion.  FIXME do something with
 629                                                  * the charset (like... convert it) instead of just throwing
 630                                                  * it away
 631                                                  */
 632                                                 if (strstr(mret[0]->content_type, ";") != NULL) {
 633                                                         strcpy(strstr(mret[0]->content_type, ";"), "");
 634                                                 }
 635
 636                                         }
 637                                         if (!strncasecmp(bbb, "X-Citadel-MSG4-Partnum:", 23)) {
 638                                                 extract_token(mret[0]->mime_chosen, bbb, 0, '\n', sizeof mret[0]->mime_chosen);
 639                                                 strcpy(mret[0]->mime_chosen, &mret[0]->mime_chosen[23]);
 640                                                 striplt(mret[0]->mime_chosen);
 641                                         }
 642                                         if (!strncasecmp(bbb, "Content-transfer-encoding:", 26)) {
 643                                                 extract_token(encoding, bbb, 0, '\n', sizeof encoding);
 644                                                 strcpy(encoding, &encoding[26]);
 645                                                 striplt(encoding);
 646                                         }
 647                                         remove_token(bbb, 0, '\n');
 648                                 } while ((bbb[0] != 0) && (bbb[0] != '\n'));
 649                                 remove_token(bbb, 0, '\n');
 650                         }
 651
 652
 653                 }
 654                 if (strlen(bbb)) {
 655
 656                         if ( (!strcasecmp(encoding, "base64")) || (!strcasecmp(encoding, "quoted-printable")) ) {
 657                                 char *ccc = NULL;
 658                                 int bytes_decoded = 0;
 659                                 ccc = malloc(strlen(bbb) + 32768);
 660                                 if (!strcasecmp(encoding, "base64")) {
 661                                         bytes_decoded = CtdlDecodeBase64(ccc, bbb, strlen(bbb));
 662                                 }
 663                                 else if (!strcasecmp(encoding, "quoted-printable")) {
 664                                         bytes_decoded = CtdlDecodeQuotedPrintable(ccc, bbb, strlen(bbb));
 665                                 }
 666                                 ccc[bytes_decoded] = 0;
 667                                 free(bbb);
 668                                 bbb = ccc;
 669                         }
 670
 671                         /* FIXME: Strip trailing whitespace */
 672                         bbb = (char *)realloc(bbb, (size_t)(strlen(bbb) + 1));
 673
 674                 } else {
 675                         bbb = (char *)realloc(bbb, 1);
 676                         *bbb = '\0';
 677                 }
 678                 mret[0]->text = bbb;
 679         }
 680         return ret;
 681 }
 682
 683
 684 /* WHOK */
 685 int CtdlIPCWhoKnowsRoom(CtdlIPC *ipc, char **listing, char *cret)
 686 {
 687         register int ret;
 688         size_t bytes;
 689
 690         if (!cret) return -2;
 691         if (!listing) return -2;
 692         if (*listing) return -2;
 693
 694         ret = CtdlIPCGenericCommand(ipc, "WHOK", NULL, 0, listing, &bytes, cret);
 695         return ret;
 696 }
 697
 698
 699 /* INFO */
 700 int CtdlIPCServerInfo(CtdlIPC *ipc, char *cret)
 701 {
 702         register int ret;
 703         size_t bytes;
 704         char *listing = NULL;
 705         char buf[SIZ];
 706
 707         if (!cret) return -2;
 708
 709         ret = CtdlIPCGenericCommand(ipc, "INFO", NULL, 0, &listing, &bytes, cret);
 710         if (ret / 100 == 1) {
 711                 int line = 0;
 712
 713                 while (*listing && strlen(listing)) {
 714                         extract_token(buf, listing, 0, '\n', sizeof buf);
 715                         remove_token(listing, 0, '\n');
 716                         switch (line++) {
 717                         case 0:         ipc->ServInfo.pid = atoi(buf);
 718                                         break;
 719                         case 1:         strcpy(ipc->ServInfo.nodename,buf);
 720                                         break;
 721                         case 2:         strcpy(ipc->ServInfo.humannode,buf);
 722                                         break;
 723                         case 3:         strcpy(ipc->ServInfo.fqdn,buf);
 724                                         break;
 725                         case 4:         strcpy(ipc->ServInfo.software,buf);
 726                                         break;
 727                         case 5:         ipc->ServInfo.rev_level = atoi(buf);
 728                                         break;
 729                         case 6:         strcpy(ipc->ServInfo.site_location,buf);
 730                                         break;
 731                         case 7:         strcpy(ipc->ServInfo.sysadm,buf);
 732                                         break;
 733                         case 9:         strcpy(ipc->ServInfo.moreprompt,buf);
 734                                         break;
 735                         case 10:        ipc->ServInfo.ok_floors = atoi(buf);
 736                                         break;
 737                         case 11:        ipc->ServInfo.paging_level = atoi(buf);
 738                                         break;
 739                         case 13:        ipc->ServInfo.supports_qnop = atoi(buf);
 740                                         break;
 741                         case 14:        ipc->ServInfo.supports_ldap = atoi(buf);
 742                                         break;
 743                         case 15:        ipc->ServInfo.newuser_disabled = atoi(buf);
 744                                         break;
 745                         case 16:        strcpy(ipc->ServInfo.default_cal_zone, buf);
 746                                         break;
 747                         case 17:        ipc->ServInfo.load_avg = atof(buf);
 748                                         break;
 749                         case 18:        ipc->ServInfo.worker_avg = atof(buf);
 750                                         break;
 751                         case 19:        ipc->ServInfo.thread_count = atoi(buf);
 752                                         break;
 753                         case 20:        ipc->ServInfo.has_sieve = atoi(buf);
 754                                         break;
 755                         case 21:        ipc->ServInfo.fulltext_enabled = atoi(buf);
 756                                         break;
 757                         case 22:        strcpy(ipc->ServInfo.svn_revision, buf);
 758                                         break;
 759                         }
 760                 }
 761
 762         }
 763         if (listing) free(listing);
 764         return ret;
 765 }
 766
 767
 768 /* RDIR */
 769 int CtdlIPCReadDirectory(CtdlIPC *ipc, char **listing, char *cret)
 770 {
 771         register int ret;
 772         size_t bytes;
 773
 774         if (!cret) return -2;
 775         if (!listing) return -2;
 776         if (*listing) return -2;
 777
 778         ret = CtdlIPCGenericCommand(ipc, "RDIR", NULL, 0, listing, &bytes, cret);
 779         return ret;
 780 }
 781
 782
 783 /*
 784  * Set last-read pointer in this room to msgnum, or 0 for HIGHEST.
 785  */
 786 int CtdlIPCSetLastRead(CtdlIPC *ipc, long msgnum, char *cret)
 787 {
 788         register int ret;
 789         char aaa[64];
 790
 791         if (!cret) return -2;
 792
 793         if (msgnum) {
 794                 sprintf(aaa, "SLRP %ld", msgnum);
 795         }
 796         else {
 797                 sprintf(aaa, "SLRP HIGHEST");
 798         }
 799         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 800         return ret;
 801 }
 802
 803
 804 /* INVT */
 805 int CtdlIPCInviteUserToRoom(CtdlIPC *ipc, const char *username, char *cret)
 806 {
 807         register int ret;
 808         char *aaa;
 809
 810         if (!cret) return -2;
 811         if (!username) return -2;
 812
 813         aaa = (char *)malloc(strlen(username) + 6);
 814         if (!aaa) return -1;
 815
 816         sprintf(aaa, "INVT %s", username);
 817         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 818         free(aaa);
 819         return ret;
 820 }
 821
 822
 823 /* KICK */
 824 int CtdlIPCKickoutUserFromRoom(CtdlIPC *ipc, const char *username, char *cret)
 825 {
 826         register int ret;
 827         char *aaa;
 828
 829         if (!cret) return -1;
 830         if (!username) return -1;
 831
 832         aaa = (char *)malloc(strlen(username) + 6);
 833
 834         sprintf(aaa, "KICK %s", username);
 835         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 836         free(aaa);
 837         return ret;
 838 }
 839
 840
 841 /* GETR */
 842 int CtdlIPCGetRoomAttributes(CtdlIPC *ipc, struct ctdlroom **qret, char *cret)
 843 {
 844         register int ret;
 845
 846         if (!cret) return -2;
 847         if (!qret) return -2;
 848         if (!*qret) *qret = (struct ctdlroom *)calloc(1, sizeof (struct ctdlroom));
 849         if (!*qret) return -1;
 850
 851         ret = CtdlIPCGenericCommand(ipc, "GETR", NULL, 0, NULL, NULL, cret);
 852         if (ret / 100 == 2) {
 853                 extract_token(qret[0]->QRname, cret, 0, '|', sizeof qret[0]->QRname);
 854                 extract_token(qret[0]->QRpasswd, cret, 1, '|', sizeof qret[0]->QRpasswd);
 855                 extract_token(qret[0]->QRdirname, cret, 2, '|', sizeof qret[0]->QRdirname);
 856                 qret[0]->QRflags = extract_int(cret, 3);
 857                 qret[0]->QRfloor = extract_int(cret, 4);
 858                 qret[0]->QRorder = extract_int(cret, 5);
 859                 qret[0]->QRdefaultview = extract_int(cret, 6);
 860                 qret[0]->QRflags2 = extract_int(cret, 7);
 861         }
 862         return ret;
 863 }
 864
 865
 866 /* SETR */
 867 /* set forget to kick all users out of room */
 868 int CtdlIPCSetRoomAttributes(CtdlIPC *ipc, int forget, struct ctdlroom *qret, char *cret)
 869 {
 870         register int ret;
 871         char *aaa;
 872
 873         if (!cret) return -2;
 874         if (!qret) return -2;
 875
 876         aaa = (char *)malloc(strlen(qret->QRname) + strlen(qret->QRpasswd) +
 877                         strlen(qret->QRdirname) + 64);
 878         if (!aaa) return -1;
 879
 880         sprintf(aaa, "SETR %s|%s|%s|%d|%d|%d|%d|%d|%d",
 881                         qret->QRname, qret->QRpasswd, qret->QRdirname,
 882                         qret->QRflags, forget, qret->QRfloor, qret->QRorder,
 883                         qret->QRdefaultview, qret->QRflags2);
 884         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 885         free(aaa);
 886         return ret;
 887 }
 888
 889
 890 /* GETA */
 891 int CtdlIPCGetRoomAide(CtdlIPC *ipc, char *cret)
 892 {
 893         if (!cret) return -1;
 894
 895         return CtdlIPCGenericCommand(ipc, "GETA", NULL, 0, NULL, NULL, cret);
 896 }
 897
 898
 899 /* SETA */
 900 int CtdlIPCSetRoomAide(CtdlIPC *ipc, const char *username, char *cret)
 901 {
 902         register int ret;
 903         char *aaa;
 904
 905         if (!cret) return -2;
 906         if (!username) return -2;
 907
 908         aaa = (char *)malloc(strlen(username) + 6);
 909         if (!aaa) return -1;
 910
 911         sprintf(aaa, "SETA %s", username);
 912         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 913         free(aaa);
 914         return ret;
 915 }
 916
 917
 918 /* ENT0 */
 919 int CtdlIPCPostMessage(CtdlIPC *ipc, int flag, int *subject_required,  struct ctdlipcmessage *mr, char *cret)
 920 {
 921         register int ret;
 922         char cmd[SIZ];
 923         char *ptr;
 924
 925         if (!cret) return -2;
 926         if (!mr) return -2;
 927
 928         if (mr->references) {
 929                 for (ptr=mr->references; *ptr != 0; ++ptr) {
 930                         if (*ptr == '|') *ptr = '!';
 931                 }
 932         }
 933
 934         snprintf(cmd, sizeof cmd,
 935                         "ENT0 %d|%s|%d|%d|%s|%s||||||%s|", flag, mr->recipient,
 936                         mr->anonymous, mr->type, mr->subject, mr->author, mr->references);
 937         ret = CtdlIPCGenericCommand(ipc, cmd, mr->text, strlen(mr->text), NULL,
 938                         NULL, cret);
 939         if ((flag == 0) && (subject_required != NULL)) {
 940                 /* Is the server strongly recommending that the user enter a message subject? */
 941                 if ((cret[3] != '\0') && (cret[4] != '\0')) {
 942                         *subject_required = extract_int(&cret[4], 1);
 943                 }
 944
 945
 946         }
 947         return ret;
 948 }
 949
 950
 951 /* RINF */
 952 int CtdlIPCRoomInfo(CtdlIPC *ipc, char **iret, char *cret)
 953 {
 954         size_t bytes;
 955
 956         if (!cret) return -2;
 957         if (!iret) return -2;
 958         if (*iret) return -2;
 959
 960         return CtdlIPCGenericCommand(ipc, "RINF", NULL, 0, iret, &bytes, cret);
 961 }
 962
 963
 964 /* DELE */
 965 int CtdlIPCDeleteMessage(CtdlIPC *ipc, long msgnum, char *cret)
 966 {
 967         char aaa[64];
 968
 969         if (!cret) return -2;
 970         if (!msgnum) return -2;
 971
 972         sprintf(aaa, "DELE %ld", msgnum);
 973         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 974 }
 975
 976
 977 /* MOVE */
 978 int CtdlIPCMoveMessage(CtdlIPC *ipc, int copy, long msgnum, const char *destroom, char *cret)
 979 {
 980         register int ret;
 981         char *aaa;
 982
 983         if (!cret) return -2;
 984         if (!destroom) return -2;
 985         if (!msgnum) return -2;
 986
 987         aaa = (char *)malloc(strlen(destroom) + 28);
 988         if (!aaa) return -1;
 989
 990         sprintf(aaa, "MOVE %ld|%s|%d", msgnum, destroom, copy);
 991         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
 992         free(aaa);
 993         return ret;
 994 }
 995
 996
 997 /* KILL */
 998 int CtdlIPCDeleteRoom(CtdlIPC *ipc, int for_real, char *cret)
 999 {
1000         char aaa[64];
1001
1002         if (!cret) return -2;
1003
1004         sprintf(aaa, "KILL %d", for_real);
1005         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1006 }
1007
1008
1009 /* CRE8 */
1010 int CtdlIPCCreateRoom(CtdlIPC *ipc, int for_real, const char *roomname, int type,
1011                 const char *password, int floor, char *cret)
1012 {
1013         register int ret;
1014         char *aaa;
1015
1016         if (!cret) return -2;
1017         if (!roomname) return -2;
1018
1019         if (password) {
1020                 aaa = (char *)malloc(strlen(roomname) + strlen(password) + 40);
1021                 if (!aaa) return -1;
1022                 sprintf(aaa, "CRE8 %d|%s|%d|%s|%d", for_real, roomname, type,
1023                                 password, floor);
1024         } else {
1025                 aaa = (char *)malloc(strlen(roomname) + 40);
1026                 if (!aaa) return -1;
1027                 sprintf(aaa, "CRE8 %d|%s|%d||%d", for_real, roomname, type,
1028                                 floor);
1029         }
1030         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1031         free(aaa);
1032         return ret;
1033 }
1034
1035
1036 /* FORG */
1037 int CtdlIPCForgetRoom(CtdlIPC *ipc, char *cret)
1038 {
1039         if (!cret) return -2;
1040
1041         return CtdlIPCGenericCommand(ipc, "FORG", NULL, 0, NULL, NULL, cret);
1042 }
1043
1044
1045 /* MESG */
1046 int CtdlIPCSystemMessage(CtdlIPC *ipc, const char *message, char **mret, char *cret)
1047 {
1048         register int ret;
1049         char *aaa;
1050         size_t bytes;
1051
1052         if (!cret) return -2;
1053         if (!mret) return -2;
1054         if (*mret) return -2;
1055         if (!message) return -2;
1056
1057         aaa = (char *)malloc(strlen(message) + 6);
1058         if (!aaa) return -1;
1059
1060         sprintf(aaa, "MESG %s", message);
1061         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, mret, &bytes, cret);
1062         free(aaa);
1063         return ret;
1064 }
1065
1066
1067 /* GNUR */
1068 int CtdlIPCNextUnvalidatedUser(CtdlIPC *ipc, char *cret)
1069 {
1070         if (!cret) return -2;
1071
1072         return CtdlIPCGenericCommand(ipc, "GNUR", NULL, 0, NULL, NULL, cret);
1073 }
1074
1075
1076 /* GREG */
1077 int CtdlIPCGetUserRegistration(CtdlIPC *ipc, const char *username, char **rret, char *cret)
1078 {
1079         register int ret;
1080         char *aaa;
1081         size_t bytes;
1082
1083         if (!cret) return -2;
1084         if (!rret) return -2;
1085         if (*rret) return -2;
1086
1087         if (username)
1088                 aaa = (char *)malloc(strlen(username) + 6);
1089         else
1090                 aaa = (char *)malloc(12);
1091         if (!aaa) return -1;
1092
1093         if (username)
1094                 sprintf(aaa, "GREG %s", username);
1095         else
1096                 sprintf(aaa, "GREG _SELF_");
1097         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, rret, &bytes, cret);
1098         free(aaa);
1099         return ret;
1100 }
1101
1102
1103 /* VALI */
1104 int CtdlIPCValidateUser(CtdlIPC *ipc, const char *username, int axlevel, char *cret)
1105 {
1106         register int ret;
1107         char *aaa;
1108
1109         if (!cret) return -2;
1110         if (!username) return -2;
1111         if (axlevel < AxDeleted || axlevel > AxAideU) return -2;
1112
1113         aaa = (char *)malloc(strlen(username) + 17);
1114         if (!aaa) return -1;
1115
1116         sprintf(aaa, "VALI %s|%d", username, axlevel);
1117         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1118         free(aaa);
1119         return ret;
1120 }
1121
1122
1123 /* EINF */
1124 int CtdlIPCSetRoomInfo(CtdlIPC *ipc, int for_real, const char *info, char *cret)
1125 {
1126         char aaa[64];
1127
1128         if (!cret) return -1;
1129         if (!info) return -1;
1130
1131         sprintf(aaa, "EINF %d", for_real);
1132         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1133 }
1134
1135
1136 /* LIST */
1137 int CtdlIPCUserListing(CtdlIPC *ipc, char *searchstring, char **listing, char *cret)
1138 {
1139         size_t bytes;
1140         char *cmd;
1141         int ret;
1142
1143         if (!cret) return -1;
1144         if (!listing) return -1;
1145         if (*listing) return -1;
1146         if (!searchstring) return -1;
1147
1148         cmd = malloc(strlen(searchstring) + 10);
1149         sprintf(cmd, "LIST %s", searchstring);
1150
1151         ret = CtdlIPCGenericCommand(ipc, cmd, NULL, 0, listing, &bytes, cret);
1152         free(cmd);
1153         return(ret);
1154 }
1155
1156
1157 /* REGI */
1158 int CtdlIPCSetRegistration(CtdlIPC *ipc, const char *info, char *cret)
1159 {
1160         if (!cret) return -1;
1161         if (!info) return -1;
1162
1163         return CtdlIPCGenericCommand(ipc, "REGI", info, strlen(info),
1164                         NULL, NULL, cret);
1165 }
1166
1167
1168 /* CHEK */
1169 int CtdlIPCMiscCheck(CtdlIPC *ipc, struct ctdlipcmisc *chek, char *cret)
1170 {
1171         register int ret;
1172
1173         if (!cret) return -1;
1174         if (!chek) return -1;
1175
1176         ret = CtdlIPCGenericCommand(ipc, "CHEK", NULL, 0, NULL, NULL, cret);
1177         if (ret / 100 == 2) {
1178                 chek->newmail = extract_long(cret, 0);
1179                 chek->needregis = extract_int(cret, 1);
1180                 chek->needvalid = extract_int(cret, 2);
1181         }
1182         return ret;
1183 }
1184
1185
1186 /* DELF */
1187 int CtdlIPCDeleteFile(CtdlIPC *ipc, const char *filename, char *cret)
1188 {
1189         register int ret;
1190         char *aaa;
1191
1192         if (!cret) return -2;
1193         if (!filename) return -2;
1194
1195         aaa = (char *)malloc(strlen(filename) + 6);
1196         if (!aaa) return -1;
1197
1198         sprintf(aaa, "DELF %s", filename);
1199         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1200         free(aaa);
1201         return ret;
1202 }
1203
1204
1205 /* MOVF */
1206 int CtdlIPCMoveFile(CtdlIPC *ipc, const char *filename, const char *destroom, char *cret)
1207 {
1208         register int ret;
1209         char *aaa;
1210
1211         if (!cret) return -2;
1212         if (!filename) return -2;
1213         if (!destroom) return -2;
1214
1215         aaa = (char *)malloc(strlen(filename) + strlen(destroom) + 7);
1216         if (!aaa) return -1;
1217
1218         sprintf(aaa, "MOVF %s|%s", filename, destroom);
1219         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1220         free(aaa);
1221         return ret;
1222 }
1223
1224
1225 /* RWHO */
1226 int CtdlIPCOnlineUsers(CtdlIPC *ipc, char **listing, time_t *stamp, char *cret)
1227 {
1228         register int ret;
1229         size_t bytes;
1230
1231         if (!cret) return -1;
1232         if (!listing) return -1;
1233         if (*listing) return -1;
1234
1235         *stamp = CtdlIPCServerTime(ipc, cret);
1236         if (!*stamp)
1237                 *stamp = time(NULL);
1238         ret = CtdlIPCGenericCommand(ipc, "RWHO", NULL, 0, listing, &bytes, cret);
1239         return ret;
1240 }
1241
1242
1243 /* OPEN */
1244 int CtdlIPCFileDownload(CtdlIPC *ipc, const char *filename, void **buf,
1245                 size_t resume,
1246                 void (*progress_gauge_callback)
1247                         (CtdlIPC*, unsigned long, unsigned long),
1248                 char *cret)
1249 {
1250         register int ret;
1251         size_t bytes;
1252         time_t last_mod;
1253         char mimetype[SIZ];
1254         char *aaa;
1255
1256         if (!cret) return -2;
1257         if (!filename) return -2;
1258         if (!buf) return -2;
1259         if (*buf) return -2;
1260         if (ipc->downloading) return -2;
1261
1262         aaa = (char *)malloc(strlen(filename) + 6);
1263         if (!aaa) return -1;
1264
1265         sprintf(aaa, "OPEN %s", filename);
1266         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1267         free(aaa);
1268         if (ret / 100 == 2) {
1269                 ipc->downloading = 1;
1270                 bytes = extract_long(cret, 0);
1271                 last_mod = extract_int(cret, 1);
1272                 extract_token(mimetype, cret, 2, '|', sizeof mimetype);
1273
1274                 ret = CtdlIPCReadDownload(ipc, buf, bytes, resume,
1275                                         progress_gauge_callback, cret);
1276                 /*
1277                 ret = CtdlIPCHighSpeedReadDownload(ipc, buf, bytes, resume,
1278                                         progress_gauge_callback, cret);
1279                 */
1280
1281                 ret = CtdlIPCEndDownload(ipc, cret);
1282                 if (ret / 100 == 2)
1283                         sprintf(cret, "%d|%ld|%s|%s", (int)bytes, last_mod,
1284                                         filename, mimetype);
1285         }
1286         return ret;
1287 }
1288
1289
1290 /* OPNA */
1291 int CtdlIPCAttachmentDownload(CtdlIPC *ipc, long msgnum, const char *part,
1292                 void **buf,
1293                 void (*progress_gauge_callback)
1294                         (CtdlIPC*, unsigned long, unsigned long),
1295                 char *cret)
1296 {
1297         register int ret;
1298         size_t bytes;
1299         time_t last_mod;
1300         char filename[SIZ];
1301         char mimetype[SIZ];
1302         char aaa[SIZ];
1303
1304         if (!cret) return -2;
1305         if (!buf) return -2;
1306         if (*buf) return -2;
1307         if (!part) return -2;
1308         if (!msgnum) return -2;
1309         if (ipc->downloading) return -2;
1310
1311         sprintf(aaa, "OPNA %ld|%s", msgnum, part);
1312         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1313         if (ret / 100 == 2) {
1314                 ipc->downloading = 1;
1315                 bytes = extract_long(cret, 0);
1316                 last_mod = extract_int(cret, 1);
1317                 extract_token(filename, cret, 2, '|', sizeof filename);
1318                 extract_token(mimetype, cret, 3, '|', sizeof mimetype);
1319                 /* ret = CtdlIPCReadDownload(ipc, buf, bytes, 0, progress_gauge_callback, cret); */
1320                 ret = CtdlIPCHighSpeedReadDownload(ipc, buf, bytes, 0, progress_gauge_callback, cret);
1321                 ret = CtdlIPCEndDownload(ipc, cret);
1322                 if (ret / 100 == 2)
1323                         sprintf(cret, "%d|%ld|%s|%s", (int)bytes, last_mod,
1324                                         filename, mimetype);
1325         }
1326         return ret;
1327 }
1328
1329
1330 /* OIMG */
1331 int CtdlIPCImageDownload(CtdlIPC *ipc, const char *filename, void **buf,
1332                 void (*progress_gauge_callback)
1333                         (CtdlIPC*, unsigned long, unsigned long),
1334                 char *cret)
1335 {
1336         register int ret;
1337         size_t bytes;
1338         time_t last_mod;
1339         char mimetype[SIZ];
1340         char *aaa;
1341
1342         if (!cret) return -1;
1343         if (!buf) return -1;
1344         if (*buf) return -1;
1345         if (!filename) return -1;
1346         if (ipc->downloading) return -1;
1347
1348         aaa = (char *)malloc(strlen(filename) + 6);
1349         if (!aaa) return -1;
1350
1351         sprintf(aaa, "OIMG %s", filename);
1352         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1353         free(aaa);
1354         if (ret / 100 == 2) {
1355                 ipc->downloading = 1;
1356                 bytes = extract_long(cret, 0);
1357                 last_mod = extract_int(cret, 1);
1358                 extract_token(mimetype, cret, 2, '|', sizeof mimetype);
1359 /*              ret = CtdlIPCReadDownload(ipc, buf, bytes, 0, progress_gauge_callback, cret); */
1360                 ret = CtdlIPCHighSpeedReadDownload(ipc, buf, bytes, 0, progress_gauge_callback, cret);
1361                 ret = CtdlIPCEndDownload(ipc, cret);
1362                 if (ret / 100 == 2)
1363                         sprintf(cret, "%d|%ld|%s|%s", (int)bytes, last_mod,
1364                                         filename, mimetype);
1365         }
1366         return ret;
1367 }
1368
1369
1370 /* UOPN */
1371 int CtdlIPCFileUpload(CtdlIPC *ipc, const char *save_as, const char *comment,
1372                 const char *path,
1373                 void (*progress_gauge_callback)
1374                         (CtdlIPC*, unsigned long, unsigned long),
1375                 char *cret)
1376 {
1377         register int ret;
1378         char *aaa;
1379         FILE *uploadFP;
1380         char MimeTestBuf[64];
1381         const char *MimeType;
1382         long len;
1383
1384         if (!cret) return -1;
1385         if (!save_as) return -1;
1386         if (!comment) return -1;
1387         if (!path) return -1;
1388         if (!*path) return -1;
1389         if (ipc->uploading) return -1;
1390
1391         uploadFP = fopen(path, "r");
1392         if (!uploadFP) return -2;
1393
1394         len = fread(&MimeTestBuf[0], 1, 64, uploadFP);
1395         rewind (uploadFP);
1396         if (len < 0)
1397                 return -3;
1398
1399         MimeType = GuessMimeType(&MimeTestBuf[0], len);
1400         aaa = (char *)malloc(strlen(save_as) + strlen(comment) + 7);
1401         if (!aaa) return -1;
1402
1403         sprintf(aaa, "UOPN %s|%s|%s", save_as, MimeType,  comment);
1404         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1405         free(aaa);
1406         if (ret / 100 == 2) {
1407                 ipc->uploading = 1;
1408                 ret = CtdlIPCWriteUpload(ipc, uploadFP, progress_gauge_callback, cret);
1409                 ret = CtdlIPCEndUpload(ipc, (ret == -2 ? 1 : 0), cret);
1410                 ipc->uploading = 0;
1411         }
1412         return ret;
1413 }
1414
1415
1416 /* UIMG */
1417 int CtdlIPCImageUpload(CtdlIPC *ipc, int for_real, const char *path,
1418                 const char *save_as,
1419                 void (*progress_gauge_callback)
1420                         (CtdlIPC*, unsigned long, unsigned long),
1421                 char *cret)
1422 {
1423         register int ret;
1424         FILE *uploadFP;
1425         char *aaa;
1426         char MimeTestBuf[64];
1427         const char *MimeType;
1428         long len;
1429
1430         if (!cret) return -1;
1431         if (!save_as) return -1;
1432         if (!path && for_real) return -1;
1433         if (!*path && for_real) return -1;
1434         if (ipc->uploading) return -1;
1435
1436         aaa = (char *)malloc(strlen(save_as) + 17);
1437         if (!aaa) return -1;
1438
1439         uploadFP = fopen(path, "r");
1440         if (!uploadFP) return -2;
1441
1442         len = fread(&MimeTestBuf[0], 1, 64, uploadFP);
1443         rewind (uploadFP);
1444         if (len < 0)
1445                 return -3;
1446         MimeType = GuessMimeType(&MimeTestBuf[0], 64);
1447
1448         sprintf(aaa, "UIMG %d|%s|%s", for_real, MimeType, save_as);
1449         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1450         free(aaa);
1451         if (ret / 100 == 2 && for_real) {
1452                 ipc->uploading = 1;
1453                 ret = CtdlIPCWriteUpload(ipc, uploadFP, progress_gauge_callback, cret);
1454                 ret = CtdlIPCEndUpload(ipc, (ret == -2 ? 1 : 0), cret);
1455                 ipc->uploading = 0;
1456         }
1457         return ret;
1458 }
1459
1460
1461 /* QUSR */
1462 int CtdlIPCQueryUsername(CtdlIPC *ipc, const char *username, char *cret)
1463 {
1464         register int ret;
1465         char *aaa;
1466
1467         if (!cret) return -2;
1468         if (!username) return -2;
1469
1470         aaa = (char *)malloc(strlen(username) + 6);
1471         if (!aaa) return -1;
1472
1473         sprintf(aaa, "QUSR %s", username);
1474         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1475         free(aaa);
1476         return ret;
1477 }
1478
1479
1480 /* LFLR */
1481 int CtdlIPCFloorListing(CtdlIPC *ipc, char **listing, char *cret)
1482 {
1483         size_t bytes;
1484
1485         if (!cret) return -2;
1486         if (!listing) return -2;
1487         if (*listing) return -2;
1488
1489         return CtdlIPCGenericCommand(ipc, "LFLR", NULL, 0, listing, &bytes, cret);
1490 }
1491
1492
1493 /* CFLR */
1494 int CtdlIPCCreateFloor(CtdlIPC *ipc, int for_real, const char *name, char *cret)
1495 {
1496         register int ret;
1497         char aaa[SIZ];
1498
1499         if (!cret) return -2;
1500         if (!name) return -2;
1501
1502         sprintf(aaa, "CFLR %s|%d", name, for_real);
1503         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1504         return ret;
1505 }
1506
1507
1508 /* KFLR */
1509 int CtdlIPCDeleteFloor(CtdlIPC *ipc, int for_real, int floornum, char *cret)
1510 {
1511         char aaa[SIZ];
1512
1513         if (!cret) return -1;
1514         if (floornum < 0) return -1;
1515
1516         sprintf(aaa, "KFLR %d|%d", floornum, for_real);
1517         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1518 }
1519
1520
1521 /* EFLR */
1522 int CtdlIPCEditFloor(CtdlIPC *ipc, int floornum, const char *floorname, char *cret)
1523 {
1524         register int ret;
1525         char aaa[SIZ];
1526
1527         if (!cret) return -2;
1528         if (!floorname) return -2;
1529         if (floornum < 0) return -2;
1530
1531         sprintf(aaa, "EFLR %d|%s", floornum, floorname);
1532         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1533         return ret;
1534 }
1535
1536
1537 /*
1538  * IDEN
1539  *
1540  * You only need to fill out hostname, the defaults will be used if any of the
1541  * other fields are not set properly.
1542  */
1543 int CtdlIPCIdentifySoftware(CtdlIPC *ipc, int developerid, int clientid,
1544                 int revision, const char *software_name, const char *hostname,
1545                 char *cret)
1546 {
1547         register int ret;
1548         char *aaa;
1549
1550         if (developerid < 0 || clientid < 0 || revision < 0 ||
1551             !software_name) {
1552                 developerid = 8;
1553                 clientid = 0;
1554                 revision = REV_LEVEL - 600;
1555                 software_name = "Citadel (libcitadel)";
1556         }
1557         if (!hostname) return -2;
1558
1559         aaa = (char *)malloc(strlen(software_name) + strlen(hostname) + 29);
1560         if (!aaa) return -1;
1561
1562         sprintf(aaa, "IDEN %d|%d|%d|%s|%s", developerid, clientid,
1563                         revision, software_name, hostname);
1564         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1565         free(aaa);
1566         return ret;
1567 }
1568
1569
1570 /* SEXP */
1571 int CtdlIPCSendInstantMessage(CtdlIPC *ipc, const char *username, const char *text,
1572                 char *cret)
1573 {
1574         register int ret;
1575         char *aaa;
1576
1577         if (!cret) return -2;
1578         if (!username) return -2;
1579
1580         aaa = (char *)malloc(strlen(username) + 8);
1581         if (!aaa) return -1;
1582
1583         if (text) {
1584                 sprintf(aaa, "SEXP %s|-", username);
1585                 ret = CtdlIPCGenericCommand(ipc, aaa, text, strlen(text),
1586                                 NULL, NULL, cret);
1587         } else {
1588                 sprintf(aaa, "SEXP %s||", username);
1589                 ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1590         }
1591         free(aaa);
1592         return ret;
1593 }
1594
1595
1596 /* GEXP */
1597 int CtdlIPCGetInstantMessage(CtdlIPC *ipc, char **listing, char *cret)
1598 {
1599         size_t bytes;
1600
1601         if (!cret) return -2;
1602         if (!listing) return -2;
1603         if (*listing) return -2;
1604
1605         return CtdlIPCGenericCommand(ipc, "GEXP", NULL, 0, listing, &bytes, cret);
1606 }
1607
1608
1609 /* DEXP */
1610 /* mode is 0 = enable, 1 = disable, 2 = status */
1611 int CtdlIPCEnableInstantMessageReceipt(CtdlIPC *ipc, int mode, char *cret)
1612 {
1613         char aaa[64];
1614
1615         if (!cret) return -2;
1616
1617         sprintf(aaa, "DEXP %d", mode);
1618         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1619 }
1620
1621
1622 /* EBIO */
1623 int CtdlIPCSetBio(CtdlIPC *ipc, char *bio, char *cret)
1624 {
1625         if (!cret) return -2;
1626         if (!bio) return -2;
1627
1628         return CtdlIPCGenericCommand(ipc, "EBIO", bio, strlen(bio),
1629                         NULL, NULL, cret);
1630 }
1631
1632
1633 /* RBIO */
1634 int CtdlIPCGetBio(CtdlIPC *ipc, const char *username, char **listing, char *cret)
1635 {
1636         register int ret;
1637         size_t bytes;
1638         char *aaa;
1639
1640         if (!cret) return -2;
1641         if (!username) return -2;
1642         if (!listing) return -2;
1643         if (*listing) return -2;
1644
1645         aaa = (char *)malloc(strlen(username) + 6);
1646         if (!aaa) return -1;
1647
1648         sprintf(aaa, "RBIO %s", username);
1649         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, listing, &bytes, cret);
1650         free(aaa);
1651         return ret;
1652 }
1653
1654
1655 /* LBIO */
1656 int CtdlIPCListUsersWithBios(CtdlIPC *ipc, char **listing, char *cret)
1657 {
1658         size_t bytes;
1659
1660         if (!cret) return -2;
1661         if (!listing) return -2;
1662         if (*listing) return -2;
1663
1664         return CtdlIPCGenericCommand(ipc, "LBIO", NULL, 0, listing, &bytes, cret);
1665 }
1666
1667
1668 /* STEL */
1669 int CtdlIPCStealthMode(CtdlIPC *ipc, int mode, char *cret)
1670 {
1671         char aaa[64];
1672
1673         if (!cret) return -1;
1674
1675         sprintf(aaa, "STEL %d", mode ? 1 : 0);
1676         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1677 }
1678
1679
1680 /* TERM */
1681 int CtdlIPCTerminateSession(CtdlIPC *ipc, int sid, char *cret)
1682 {
1683         char aaa[64];
1684
1685         if (!cret) return -1;
1686
1687         sprintf(aaa, "TERM %d", sid);
1688         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1689 }
1690
1691
1692 /* DOWN */
1693 int CtdlIPCTerminateServerNow(CtdlIPC *ipc, char *cret)
1694 {
1695         if (!cret) return -1;
1696
1697         return CtdlIPCGenericCommand(ipc, "DOWN", NULL, 0, NULL, NULL, cret);
1698 }
1699
1700
1701 /* SCDN */
1702 int CtdlIPCTerminateServerScheduled(CtdlIPC *ipc, int mode, char *cret)
1703 {
1704         char aaa[16];
1705
1706         if (!cret) return -1;
1707
1708         sprintf(aaa, "SCDN %d", mode ? 1 : 0);
1709         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1710 }
1711
1712
1713 /* EMSG */
1714 int CtdlIPCEnterSystemMessage(CtdlIPC *ipc, const char *filename, const char *text,
1715                 char *cret)
1716 {
1717         register int ret;
1718         char *aaa;
1719
1720         if (!cret) return -2;
1721         if (!text) return -2;
1722         if (!filename) return -2;
1723
1724         aaa = (char *)malloc(strlen(filename) + 6);
1725         if (!aaa) return -1;
1726
1727         sprintf(aaa, "EMSG %s", filename);
1728         ret = CtdlIPCGenericCommand(ipc, aaa, text, strlen(text), NULL, NULL, cret);
1729         free(aaa);
1730         return ret;
1731 }
1732
1733
1734 /* HCHG */
1735 int CtdlIPCChangeHostname(CtdlIPC *ipc, const char *hostname, char *cret)
1736 {
1737         register int ret;
1738         char *aaa;
1739
1740         if (!cret) return -2;
1741         if (!hostname) return -2;
1742
1743         aaa = (char *)malloc(strlen(hostname) + 6);
1744         if (!aaa) return -1;
1745
1746         sprintf(aaa, "HCHG %s", hostname);
1747         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1748         free(aaa);
1749         return ret;
1750 }
1751
1752
1753 /* RCHG */
1754 int CtdlIPCChangeRoomname(CtdlIPC *ipc, const char *roomname, char *cret)
1755 {
1756         register int ret;
1757         char *aaa;
1758
1759         if (!cret) return -2;
1760         if (!roomname) return -2;
1761
1762         aaa = (char *)malloc(strlen(roomname) + 6);
1763         if (!aaa) return -1;
1764
1765         sprintf(aaa, "RCHG %s", roomname);
1766         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1767         free(aaa);
1768         return ret;
1769 }
1770
1771
1772 /* UCHG */
1773 int CtdlIPCChangeUsername(CtdlIPC *ipc, const char *username, char *cret)
1774 {
1775         register int ret;
1776         char *aaa;
1777
1778         if (!cret) return -2;
1779         if (!username) return -2;
1780
1781         aaa = (char *)malloc(strlen(username) + 6);
1782         if (!aaa) return -1;
1783
1784         sprintf(aaa, "UCHG %s", username);
1785         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1786         free(aaa);
1787         return ret;
1788 }
1789
1790
1791 /* TIME */
1792 /* This function returns the actual server time reported, or 0 if error */
1793 time_t CtdlIPCServerTime(CtdlIPC *ipc, char *cret)
1794 {
1795         register time_t tret;
1796         register int ret;
1797
1798         ret = CtdlIPCGenericCommand(ipc, "TIME", NULL, 0, NULL, NULL, cret);
1799         if (ret / 100 == 2) {
1800                 tret = extract_long(cret, 0);
1801         } else {
1802                 tret = 0L;
1803         }
1804         return tret;
1805 }
1806
1807
1808 /* AGUP */
1809 int CtdlIPCAideGetUserParameters(CtdlIPC *ipc, const char *who,
1810                                  struct ctdluser **uret, char *cret)
1811 {
1812         register int ret;
1813         char aaa[SIZ];
1814
1815         if (!cret) return -2;
1816         if (!uret) return -2;
1817         if (!*uret) *uret = (struct ctdluser *)calloc(1, sizeof(struct ctdluser));
1818         if (!*uret) return -1;
1819
1820         sprintf(aaa, "AGUP %s", who);
1821         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1822
1823         if (ret / 100 == 2) {
1824                 extract_token(uret[0]->fullname, cret, 0, '|', sizeof uret[0]->fullname);
1825                 extract_token(uret[0]->password, cret, 1, '|', sizeof uret[0]->password);
1826                 uret[0]->flags = extract_int(cret, 2);
1827                 uret[0]->timescalled = extract_long(cret, 3);
1828                 uret[0]->posted = extract_long(cret, 4);
1829                 uret[0]->axlevel = extract_int(cret, 5);
1830                 uret[0]->usernum = extract_long(cret, 6);
1831                 uret[0]->lastcall = extract_long(cret, 7);
1832                 uret[0]->USuserpurge = extract_int(cret, 8);
1833         }
1834         return ret;
1835 }
1836
1837
1838 /* ASUP */
1839 int CtdlIPCAideSetUserParameters(CtdlIPC *ipc, const struct ctdluser *uret, char *cret)
1840 {
1841         register int ret;
1842         char *aaa;
1843
1844         if (!cret) return -2;
1845         if (!uret) return -2;
1846
1847         aaa = (char *)malloc(strlen(uret->fullname) + strlen(uret->password) + 84);
1848         if (!aaa) return -1;
1849
1850         sprintf(aaa, "ASUP %s|%s|%d|%ld|%ld|%d|%ld|%ld|%d",
1851                         uret->fullname, uret->password, uret->flags,
1852                         uret->timescalled, uret->posted, uret->axlevel,
1853                         uret->usernum, uret->lastcall, uret->USuserpurge);
1854         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1855         free(aaa);
1856         return ret;
1857 }
1858
1859
1860 /* GPEX */
1861 /* which is 0 = room, 1 = floor, 2 = site, 3 = default for mailboxes */
1862 /* caller must free the struct ExpirePolicy */
1863 int CtdlIPCGetMessageExpirationPolicy(CtdlIPC *ipc, GPEXWhichPolicy which,
1864                 struct ExpirePolicy **policy, char *cret)
1865 {
1866         static char *proto[] = {
1867                 strof(roompolicy),
1868                 strof(floorpolicy),
1869                 strof(sitepolicy),
1870                 strof(mailboxespolicy)
1871         };
1872         char cmd[256];
1873         register int ret;
1874
1875         if (!cret) return -2;
1876         if (!policy) return -2;
1877         if (!*policy) *policy = (struct ExpirePolicy *)calloc(1, sizeof(struct ExpirePolicy));
1878         if (!*policy) return -1;
1879         if (which < 0 || which > 3) return -2;
1880
1881         sprintf(cmd, "GPEX %s", proto[which]);
1882         ret = CtdlIPCGenericCommand(ipc, cmd, NULL, 0, NULL, NULL, cret);
1883         if (ret / 100 == 2) {
1884                 policy[0]->expire_mode = extract_int(cret, 0);
1885                 policy[0]->expire_value = extract_int(cret, 1);
1886         }
1887         return ret;
1888 }
1889
1890
1891 /* SPEX */
1892 /* which is 0 = room, 1 = floor, 2 = site, 3 = default for mailboxes */
1893 /* policy is 0 = inherit, 1 = no purge, 2 = by count, 3 = by age (days) */
1894 int CtdlIPCSetMessageExpirationPolicy(CtdlIPC *ipc, int which,
1895                 struct ExpirePolicy *policy, char *cret)
1896 {
1897         char aaa[38];
1898         char *whichvals[] = { "room", "floor", "site", "mailboxes" };
1899
1900         if (!cret) return -2;
1901         if (which < 0 || which > 3) return -2;
1902         if (!policy) return -2;
1903         if (policy->expire_mode < 0 || policy->expire_mode > 3) return -2;
1904         if (policy->expire_mode >= 2 && policy->expire_value < 1) return -2;
1905
1906         sprintf(aaa, "SPEX %s|%d|%d", whichvals[which],
1907                         policy->expire_mode, policy->expire_value);
1908         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
1909 }
1910
1911
1912 /* CONF GET */
1913 int CtdlIPCGetSystemConfig(CtdlIPC *ipc, char **listing, char *cret)
1914 {
1915         size_t bytes;
1916
1917         if (!cret) return -2;
1918         if (!listing) return -2;
1919         if (*listing) return -2;
1920
1921         return CtdlIPCGenericCommand(ipc, "CONF GET", NULL, 0,
1922                         listing, &bytes, cret);
1923 }
1924
1925
1926 /* CONF SET */
1927 int CtdlIPCSetSystemConfig(CtdlIPC *ipc, const char *listing, char *cret)
1928 {
1929         if (!cret) return -2;
1930         if (!listing) return -2;
1931
1932         return CtdlIPCGenericCommand(ipc, "CONF SET", listing, strlen(listing),
1933                         NULL, NULL, cret);
1934 }
1935
1936
1937 /* CONF GETSYS */
1938 int CtdlIPCGetSystemConfigByType(CtdlIPC *ipc, const char *mimetype,
1939                 char **listing, char *cret)
1940 {
1941         register int ret;
1942         char *aaa;
1943         size_t bytes;
1944
1945         if (!cret) return -2;
1946         if (!mimetype) return -2;
1947         if (!listing) return -2;
1948         if (*listing) return -2;
1949
1950         aaa = malloc(strlen(mimetype) + 13);
1951         if (!aaa) return -1;
1952         sprintf(aaa, "CONF GETSYS|%s", mimetype);
1953         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0,
1954                         listing, &bytes, cret);
1955     free(aaa);
1956     return ret;
1957 }
1958
1959
1960 /* CONF PUTSYS */
1961 int CtdlIPCSetSystemConfigByType(CtdlIPC *ipc, const char *mimetype,
1962                const char *listing, char *cret)
1963 {
1964     register int ret;
1965         char *aaa;
1966
1967         if (!cret) return -2;
1968         if (!mimetype) return -2;
1969         if (!listing) return -2;
1970
1971         aaa = malloc(strlen(mimetype) + 13);
1972         if (!aaa) return -1;
1973         sprintf(aaa, "CONF PUTSYS|%s", mimetype);
1974         ret = CtdlIPCGenericCommand(ipc, aaa, listing, strlen(listing),
1975                         NULL, NULL, cret);
1976     free(aaa);
1977     return ret;
1978 }
1979
1980
1981 /* GNET */
1982 int CtdlIPCGetRoomNetworkConfig(CtdlIPC *ipc, char **listing, char *cret)
1983 {
1984         size_t bytes;
1985
1986         if (!cret) return -2;
1987         if (!listing) return -2;
1988         if (*listing) return -2;
1989
1990         return CtdlIPCGenericCommand(ipc, "GNET", NULL, 0,
1991                         listing, &bytes, cret);
1992 }
1993
1994
1995 /* SNET */
1996 int CtdlIPCSetRoomNetworkConfig(CtdlIPC *ipc, const char *listing, char *cret)
1997 {
1998         if (!cret) return -2;
1999         if (!listing) return -2;
2000
2001         return CtdlIPCGenericCommand(ipc, "SNET", listing, strlen(listing),
2002                         NULL, NULL, cret);
2003 }
2004
2005
2006 /* REQT */
2007 int CtdlIPCRequestClientLogout(CtdlIPC *ipc, int session, char *cret)
2008 {
2009         char aaa[64];
2010
2011         if (!cret) return -2;
2012         if (session < 0) return -2;
2013
2014         sprintf(aaa, "REQT %d", session);
2015         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
2016 }
2017
2018
2019 /* SEEN */
2020 int CtdlIPCSetMessageSeen(CtdlIPC *ipc, long msgnum, int seen, char *cret)
2021 {
2022         char aaa[27];
2023
2024         if (!cret) return -2;
2025         if (msgnum < 0) return -2;
2026
2027         sprintf(aaa, "SEEN %ld|%d", msgnum, seen ? 1 : 0);
2028         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
2029 }
2030
2031
2032 /* STLS */
2033 int CtdlIPCStartEncryption(CtdlIPC *ipc, char *cret)
2034 {
2035         int a;
2036         int r;
2037         char buf[SIZ];
2038
2039 #ifdef HAVE_OPENSSL
2040         SSL *temp_ssl;
2041
2042         /* New SSL object */
2043         temp_ssl = SSL_new(ssl_ctx);
2044         if (!temp_ssl) {
2045                 error_printf("SSL_new failed: %s\n",
2046                                 ERR_reason_error_string(ERR_get_error()));
2047                 return -2;
2048         }
2049         /* Pointless flag waving */
2050 #if SSLEAY_VERSION_NUMBER >= 0x0922
2051         SSL_set_session_id_context(temp_ssl, (const unsigned char*) "Citadel SID", 14);
2052 #endif
2053
2054         if (!access(EGD_POOL, F_OK))
2055                 RAND_egd(EGD_POOL);
2056
2057         if (!RAND_status()) {
2058                 error_printf("PRNG not properly seeded\n");
2059                 return -2;
2060         }
2061
2062         /* Associate network connection with SSL object */
2063         if (SSL_set_fd(temp_ssl, ipc->sock) < 1) {
2064                 error_printf("SSL_set_fd failed: %s\n",
2065                                 ERR_reason_error_string(ERR_get_error()));
2066                 return -2;
2067         }
2068
2069         if (status_hook != NULL)
2070                 status_hook("Requesting encryption...\r");
2071
2072         /* Ready to start SSL/TLS */
2073         /* Old code
2074         CtdlIPC_putline(ipc, "STLS");
2075         CtdlIPC_getline(ipc, buf);
2076         if (buf[0] != '2') {
2077                 error_printf("Server can't start TLS: %s\n", buf);
2078                 return 0;
2079         }
2080         */
2081         r = CtdlIPCGenericCommand(ipc,
2082                                   "STLS", NULL, 0, NULL, NULL, cret);
2083         if (r / 100 != 2) {
2084                 error_printf("Server can't start TLS: %s\n", buf);
2085                 endtls(temp_ssl);
2086                 return r;
2087         }
2088
2089         /* Do SSL/TLS handshake */
2090         if ((a = SSL_connect(temp_ssl)) < 1) {
2091                 error_printf("SSL_connect failed: %s\n",
2092                                 ERR_reason_error_string(ERR_get_error()));
2093                 endtls(temp_ssl);
2094                 return -2;
2095         }
2096         ipc->ssl = temp_ssl;
2097
2098         BIO_set_close(ipc->ssl->rbio, BIO_NOCLOSE);
2099         {
2100                 int bits, alg_bits;
2101
2102                 bits = SSL_CIPHER_get_bits(SSL_get_current_cipher(ipc->ssl), &alg_bits);
2103                 error_printf("Encrypting with %s cipher %s (%d of %d bits)\n",
2104                                 SSL_CIPHER_get_version(SSL_get_current_cipher(ipc->ssl)),
2105                                 SSL_CIPHER_get_name(SSL_get_current_cipher(ipc->ssl)),
2106                                 bits, alg_bits);
2107         }
2108         return r;
2109 #else
2110         return 0;
2111 #endif /* HAVE_OPENSSL */
2112 }
2113
2114
2115 #ifdef HAVE_OPENSSL
2116 static void endtls(SSL *ssl)
2117 {
2118         if (ssl) {
2119                 SSL_shutdown(ssl);
2120                 SSL_free(ssl);
2121         }
2122 }
2123 #endif
2124
2125
2126 /* QDIR */
2127 int CtdlIPCDirectoryLookup(CtdlIPC *ipc, const char *address, char *cret)
2128 {
2129     register int ret;
2130         char *aaa;
2131
2132         if (!address) return -2;
2133         if (!cret) return -2;
2134
2135         aaa = (char *)malloc(strlen(address) + 6);
2136         if (!aaa) return -1;
2137
2138         sprintf(aaa, "QDIR %s", address);
2139         ret = CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
2140     free(aaa);
2141     return ret;
2142 }
2143
2144
2145 /* IPGM */
2146 int CtdlIPCInternalProgram(CtdlIPC *ipc, int secret, char *cret)
2147 {
2148         char aaa[30];
2149
2150         if (!cret) return -2;
2151         sprintf(aaa, "IPGM %d", secret);
2152         return CtdlIPCGenericCommand(ipc, aaa, NULL, 0, NULL, NULL, cret);
2153 }
2154
2155
2156 /* FSCK */
2157 int CtdlIPCMessageBaseCheck(CtdlIPC *ipc, char **mret, char *cret)
2158 {
2159         size_t size = 0;
2160
2161         if (!cret) return -2;
2162         if (!mret) return -2;
2163         if (*mret) return -2;
2164
2165         return CtdlIPCGenericCommand(ipc, "FSCK", NULL, 0, mret, &size, cret);
2166 }
2167
2168
2169 /*
2170  * Not implemented:
2171  *
2172  * CHAT
2173  * ETLS
2174  * EXPI
2175  * GTLS
2176  * IGAB
2177  * MSG3
2178  * MSG4
2179  * NDOP
2180  * NETP
2181  * NUOP
2182  * SMTP
2183  */
2184
2185
2186 /* ************************************************************************** */
2187 /*             Stuff below this line is not for public consumption            */
2188 /* ************************************************************************** */
2189
2190
2191 /* Read a listing from the server up to 000.  Append to dest if it exists */
2192 char *CtdlIPCReadListing(CtdlIPC *ipc, char *dest)
2193 {
2194         size_t length = 0;
2195         size_t linelength;
2196         char *ret = NULL;
2197         char aaa[SIZ];
2198
2199         ret = dest;
2200         if (ret != NULL) {
2201                 length = strlen(ret);
2202         } else {
2203                 length = 0;
2204         }
2205
2206         while (CtdlIPC_getline(ipc, aaa), strcmp(aaa, "000")) {
2207                 linelength = strlen(aaa);
2208                 ret = (char *)realloc(ret, (size_t)(length + linelength + 2));
2209                 if (ret) {
2210                         strcpy(&ret[length], aaa);
2211                         length += linelength;
2212                         strcpy(&ret[length++], "\n");
2213                 }
2214         }
2215
2216         return(ret);
2217 }
2218
2219
2220 /* Send a listing to the server; generate the ending 000. */
2221 int CtdlIPCSendListing(CtdlIPC *ipc, const char *listing)
2222 {
2223         char *text;
2224
2225         text = (char *)malloc(strlen(listing) + 6);
2226         if (text) {
2227                 strcpy(text, listing);
2228                 while (text[strlen(text) - 1] == '\n')
2229                         text[strlen(text) - 1] = '\0';
2230                 strcat(text, "\n000");
2231                 CtdlIPC_putline(ipc, text);
2232                 free(text);
2233                 text = NULL;
2234         } else {
2235                 /* Malloc failed but we are committed to send */
2236                 /* This may result in extra blanks at the bottom */
2237                 CtdlIPC_putline(ipc, text);
2238                 CtdlIPC_putline(ipc, "000");
2239         }
2240         return 0;
2241 }
2242
2243
2244 /* Partial read of file from server */
2245 size_t CtdlIPCPartialRead(CtdlIPC *ipc, void **buf, size_t offset, size_t bytes, char *cret)
2246 {
2247         register size_t len = 0;
2248         char aaa[SIZ];
2249
2250         if (!buf) return 0;
2251         if (!cret) return 0;
2252         if (bytes < 1) return 0;
2253
2254         CtdlIPC_lock(ipc);
2255         sprintf(aaa, "READ %d|%d", (int)offset, (int)bytes);
2256         CtdlIPC_putline(ipc, aaa);
2257         CtdlIPC_getline(ipc, aaa);
2258         if (aaa[0] != '6')
2259                 strcpy(cret, &aaa[4]);
2260         else {
2261                 len = extract_long(&aaa[4], 0);
2262                 *buf = (void *)realloc(*buf, (size_t)(offset + len));
2263                 if (*buf) {
2264                         /* I know what I'm doing */
2265                         serv_read(ipc, ((char *)(*buf) + offset), len);
2266                 } else {
2267                         /* We have to read regardless */
2268                         serv_read(ipc, aaa, len);
2269                         len = 0;
2270                 }
2271         }
2272         CtdlIPC_unlock(ipc);
2273         return len;
2274 }
2275
2276
2277 /* CLOS */
2278 int CtdlIPCEndDownload(CtdlIPC *ipc, char *cret)
2279 {
2280         register int ret;
2281
2282         if (!cret) return -2;
2283         if (!ipc->downloading) return -2;
2284
2285         ret = CtdlIPCGenericCommand(ipc, "CLOS", NULL, 0, NULL, NULL, cret);
2286         if (ret / 100 == 2)
2287                 ipc->downloading = 0;
2288         return ret;
2289 }
2290
2291
2292 /* MSGP */
2293 int CtdlIPCSpecifyPreferredFormats(CtdlIPC *ipc, char *cret, char *formats) {
2294         register int ret;
2295         char cmd[SIZ];
2296
2297         snprintf(cmd, sizeof cmd, "MSGP %s", formats);
2298         ret = CtdlIPCGenericCommand(ipc, cmd, NULL, 0, NULL, NULL, cret);
2299         return ret;
2300 }
2301
2302
2303
2304 /* READ */
2305 int CtdlIPCReadDownload(CtdlIPC *ipc, void **buf, size_t bytes, size_t resume,
2306                 void (*progress_gauge_callback)
2307                         (CtdlIPC*, unsigned long, unsigned long),
2308                char *cret)
2309 {
2310         register size_t len;
2311
2312         if (!cret) return -1;
2313         if (!buf) return -1;
2314         if (*buf) return -1;
2315         if (!ipc->downloading) return -1;
2316
2317         len = resume;
2318         if (progress_gauge_callback)
2319                 progress_gauge_callback(ipc, len, bytes);
2320         while (len < bytes) {
2321                 register size_t block;
2322
2323                 block = CtdlIPCPartialRead(ipc, buf, len, 4096, cret);
2324                 if (block == 0) {
2325                         free(*buf);
2326                         return 0;
2327                 }
2328                 len += block;
2329                 if (progress_gauge_callback)
2330                         progress_gauge_callback(ipc, len, bytes);
2331         }
2332         return len;
2333 }
2334
2335 /* READ - pipelined */
2336 int CtdlIPCHighSpeedReadDownload(CtdlIPC *ipc, void **buf, size_t bytes,
2337                size_t resume,
2338                 void (*progress_gauge_callback)
2339                         (CtdlIPC*, unsigned long, unsigned long),
2340                char *cret)
2341 {
2342         register size_t len;
2343         register int calls;     /* How many calls in the pipeline */
2344         register int i;         /* iterator */
2345         char aaa[4096];
2346
2347         if (!cret) return -1;
2348         if (!buf) return -1;
2349         if (*buf) return -1;
2350         if (!ipc->downloading) return -1;
2351
2352         *buf = (void *)realloc(*buf, bytes - resume);
2353         if (!*buf) return -1;
2354
2355         len = 0;
2356         CtdlIPC_lock(ipc);
2357         if (progress_gauge_callback)
2358                 progress_gauge_callback(ipc, len, bytes);
2359
2360         /* How many calls will be in the pipeline? */
2361         calls = (bytes - resume) / 4096;
2362         if ((bytes - resume) % 4096) calls++;
2363
2364         /* Send all requests at once */
2365         for (i = 0; i < calls; i++) {
2366                 sprintf(aaa, "READ %d|4096", (int)(i * 4096 + resume) );
2367                 CtdlIPC_putline(ipc, aaa);
2368         }
2369
2370         /* Receive all responses at once */
2371         for (i = 0; i < calls; i++) {
2372                 CtdlIPC_getline(ipc, aaa);
2373                 if (aaa[0] != '6')
2374                         strcpy(cret, &aaa[4]);
2375                 else {
2376                         len = extract_long(&aaa[4], 0);
2377                         /* I know what I'm doing */
2378                         serv_read(ipc, ((char *)(*buf) + (i * 4096)), len);
2379                 }
2380                 if (progress_gauge_callback)
2381                         progress_gauge_callback(ipc, i * 4096 + len, bytes);
2382         }
2383         CtdlIPC_unlock(ipc);
2384         return len;
2385 }
2386
2387
2388 /* UCLS */
2389 int CtdlIPCEndUpload(CtdlIPC *ipc, int discard, char *cret)
2390 {
2391         register int ret;
2392         char cmd[8];
2393
2394         if (!cret) return -1;
2395         if (!ipc->uploading) return -1;
2396
2397         sprintf(cmd, "UCLS %d", discard ? 0 : 1);
2398         ret = CtdlIPCGenericCommand(ipc, cmd, NULL, 0, NULL, NULL, cret);
2399         ipc->uploading = 0;
2400         return ret;
2401 }
2402
2403
2404 /* WRIT */
2405 int CtdlIPCWriteUpload(CtdlIPC *ipc, FILE *uploadFP,
2406                 void (*progress_gauge_callback)
2407                         (CtdlIPC*, unsigned long, unsigned long),
2408                 char *cret)
2409 {
2410         register int ret = -1;
2411         register size_t offset = 0;
2412         size_t bytes;
2413         char aaa[SIZ];
2414         char buf[4096];
2415         FILE *fd = uploadFP;
2416         int ferr;
2417
2418         if (!cret) return -1;
2419
2420         fseek(fd, 0L, SEEK_END);
2421         bytes = ftell(fd);
2422         rewind(fd);
2423
2424         if (progress_gauge_callback)
2425                 progress_gauge_callback(ipc, 0, bytes);
2426
2427         while (offset < bytes) {
2428                 register size_t to_write;
2429
2430                 /* Read some data in */
2431                 to_write = fread(buf, 1, 4096, fd);
2432                 if (!to_write) {
2433                         if (feof(fd) || ferror(fd)) break;
2434                 }
2435                 sprintf(aaa, "WRIT %d", (int)to_write);
2436                 CtdlIPC_putline(ipc, aaa);
2437                 CtdlIPC_getline(ipc, aaa);
2438                 strcpy(cret, &aaa[4]);
2439                 ret = atoi(aaa);
2440                 if (aaa[0] == '7') {
2441                         to_write = extract_long(&aaa[4], 0);
2442
2443                         serv_write(ipc, buf, to_write);
2444                         offset += to_write;
2445                         if (progress_gauge_callback)
2446                                 progress_gauge_callback(ipc, offset, bytes);
2447                         /* Detect short reads and back up if needed */
2448                         /* offset will never be negative anyway */
2449                         fseek(fd, (signed)offset, SEEK_SET);
2450                 } else {
2451                         break;
2452                 }
2453         }
2454         if (progress_gauge_callback)
2455                 progress_gauge_callback(ipc, 1, 1);
2456         ferr = ferror(fd);
2457         fclose(fd);
2458         return (!ferr ? ret : -2);
2459 }
2460
2461
2462 /*
2463  * Generic command method.  This method should handle any server command
2464  * except for CHAT.  It takes the following arguments:
2465  *
2466  * ipc                  The server to speak with
2467  * command              Preformatted command to send to server
2468  * to_send              A text or binary file to send to server
2469  *                      (only sent if server requests it)
2470  * bytes_to_send        The number of bytes in to_send (required if
2471  *                      sending binary, optional if sending listing)
2472  * to_receive           Pointer to a NULL pointer, if the server
2473  *                      sends text or binary we will allocate memory
2474  *                      for the file and stuff it here
2475  * bytes_to_receive     If a file is received, we will store its
2476  *                      byte count here
2477  * proto_response       The protocol response.  Caller must provide
2478  *                      this buffer and ensure that it is at least
2479  *                      128 bytes in length.
2480  *
2481  * This function returns a number equal to the protocol response number,
2482  * -1 if an internal error occurred, -2 if caller provided bad values,
2483  * or 0 - the protocol response number if bad values were found during
2484  * the protocol exchange.
2485  * It stores the protocol response string (minus the number) in
2486  * protocol_response as described above.  Some commands send additional
2487  * data in this string.
2488  */
2489 int CtdlIPCGenericCommand(CtdlIPC *ipc,
2490                 const char *command, const char *to_send,
2491                 size_t bytes_to_send, char **to_receive,
2492                 size_t *bytes_to_receive, char *proto_response)
2493 {
2494         char buf[SIZ];
2495         register int ret;
2496         int watch_ssl = 0;
2497
2498         if (!command) return -2;
2499         if (!proto_response) return -2;
2500
2501 #ifdef HAVE_OPENSSL
2502         if (ipc->ssl) watch_ssl = 1;
2503 #endif
2504
2505         CtdlIPC_lock(ipc);
2506         CtdlIPC_putline(ipc, command);
2507         while (1) {
2508                 CtdlIPC_getline(ipc, proto_response);
2509                 if (proto_response[3] == '*')
2510                         instant_msgs = 1;
2511                 ret = atoi(proto_response);
2512                 strcpy(proto_response, &proto_response[4]);
2513                 switch (ret / 100) {
2514                 default:                        /* Unknown, punt */
2515                 case 2:                         /* OK */
2516                 case 3:                         /* MORE_DATA */
2517                 case 5:                         /* ERROR */
2518                         /* Don't need to do anything */
2519                         break;
2520                 case 1:                         /* LISTING_FOLLOWS */
2521                         if (to_receive && !*to_receive && bytes_to_receive) {
2522                                 *to_receive = CtdlIPCReadListing(ipc, NULL);
2523                         } else { /* Drain */
2524                                 while (CtdlIPC_getline(ipc, buf), strcmp(buf, "000")) ;
2525                                 ret = -ret;
2526                         }
2527                         break;
2528                 case 4:                         /* SEND_LISTING */
2529                         if (to_send) {
2530                                 CtdlIPCSendListing(ipc, to_send);
2531                         } else {
2532                                 /* No listing given, fake it */
2533                                 CtdlIPC_putline(ipc, "000");
2534                                 ret = -ret;
2535                         }
2536                         break;
2537                 case 6:                         /* BINARY_FOLLOWS */
2538                         if (to_receive && !*to_receive && bytes_to_receive) {
2539                                 *bytes_to_receive =
2540                                         extract_long(proto_response, 0);
2541                                 *to_receive = (char *)
2542                                         malloc((size_t)*bytes_to_receive);
2543                                 if (!*to_receive) {
2544                                         ret = -1;
2545                                 } else {
2546                                         serv_read(ipc, *to_receive,
2547                                                         *bytes_to_receive);
2548                                 }
2549                         } else {
2550                                 /* Drain */
2551                                 size_t drain;
2552
2553                                 drain = extract_long(proto_response, 0);
2554                                 while (drain > SIZ) {
2555                                         serv_read(ipc, buf, SIZ);
2556                                         drain -= SIZ;
2557                                 }
2558                                 serv_read(ipc, buf, drain);
2559                                 ret = -ret;
2560                         }
2561                         break;
2562                 case 7:                         /* SEND_BINARY */
2563                         if (to_send && bytes_to_send) {
2564                                 serv_write(ipc, to_send, bytes_to_send);
2565                         } else if (bytes_to_send) {
2566                                 /* Fake it, send nulls */
2567                                 size_t fake;
2568
2569                                 fake = bytes_to_send;
2570                                 memset(buf, '\0', SIZ);
2571                                 while (fake > SIZ) {
2572                                         serv_write(ipc, buf, SIZ);
2573                                         fake -= SIZ;
2574                                 }
2575                                 serv_write(ipc, buf, fake);
2576                                 ret = -ret;
2577                         } /* else who knows?  DANGER WILL ROBINSON */
2578                         break;
2579                 case 8:                         /* START_CHAT_MODE */
2580                         if (!strncasecmp(command, "CHAT", 4)) {
2581                                 /* Don't call chatmode with generic! */
2582                                 CtdlIPC_putline(ipc, "/quit");
2583                                 ret = -ret;
2584                         } else {
2585                                 /* In this mode we send then receive listing */
2586                                 if (to_send) {
2587                                         CtdlIPCSendListing(ipc, to_send);
2588                                 } else {
2589                                         /* No listing given, fake it */
2590                                         CtdlIPC_putline(ipc, "000");
2591                                         ret = -ret;
2592                                 }
2593                                 if (to_receive && !*to_receive
2594                                                 && bytes_to_receive) {
2595                                         *to_receive = CtdlIPCReadListing(ipc, NULL);
2596                                 } else { /* Drain */
2597                                         while (CtdlIPC_getline(ipc, buf),
2598                                                         strcmp(buf, "000")) ;
2599                                         ret = -ret;
2600                                 }
2601                         }
2602                         break;
2603                 case 9:                         /* ASYNC_MSG */
2604                         /* CtdlIPCDoAsync(ret, proto_response); */
2605                         free(CtdlIPCReadListing(ipc, NULL));    /* STUB FIXME */
2606                         break;
2607                 }
2608                 if (ret / 100 != 9)
2609                         break;
2610         }
2611         CtdlIPC_unlock(ipc);
2612         return ret;
2613 }
2614
2615
2616 static int connectsock(char *host, char *service, char *protocol, int defaultPort)
2617 {
2618         struct hostent *phe;
2619         struct servent *pse;
2620         struct protoent *ppe;
2621         struct sockaddr_in sin;
2622         int s, type;
2623
2624         memset(&sin, 0, sizeof(sin));
2625         sin.sin_family = AF_INET;
2626
2627         pse = getservbyname(service, protocol);
2628         if (pse != NULL) {
2629                 sin.sin_port = pse->s_port;
2630         }
2631         else if (atoi(service) > 0) {
2632                 sin.sin_port = htons(atoi(service));
2633         }
2634         else {
2635                 sin.sin_port = htons(defaultPort);
2636         }
2637         phe = gethostbyname(host);
2638         if (phe) {
2639                 memcpy(&sin.sin_addr, phe->h_addr, phe->h_length);
2640         } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
2641                 return -1;
2642         }
2643         if ((ppe = getprotobyname(protocol)) == 0) {
2644                 return -1;
2645         }
2646         if (!strcmp(protocol, "udp")) {
2647                 type = SOCK_DGRAM;
2648         } else {
2649                 type = SOCK_STREAM;
2650         }
2651
2652         s = socket(PF_INET, type, ppe->p_proto);
2653         if (s < 0) {
2654                 return -1;
2655         }
2656
2657         if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
2658                 close(s);
2659                 return -1;
2660         }
2661
2662         return (s);
2663 }
2664
2665 static int uds_connectsock(int *isLocal, char *sockpath)
2666 {
2667         struct sockaddr_un addr;
2668         int s;
2669
2670         memset(&addr, 0, sizeof(addr));
2671         addr.sun_family = AF_UNIX;
2672         safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
2673
2674         s = socket(AF_UNIX, SOCK_STREAM, 0);
2675         if (s < 0) {
2676                 return -1;
2677         }
2678
2679         if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2680                 close(s);
2681                 return -1;
2682         }
2683
2684         *isLocal = 1;
2685         return s;
2686 }
2687
2688
2689 /*
2690  * input binary data from socket
2691  */
2692 static void serv_read(CtdlIPC *ipc, char *buf, unsigned int bytes)
2693 {
2694         unsigned int len, rlen;
2695
2696 #if defined(HAVE_OPENSSL)
2697         if (ipc->ssl) {
2698                 serv_read_ssl(ipc, buf, bytes);
2699                 return;
2700         }
2701 #endif
2702         len = 0;
2703         while (len < bytes) {
2704                 rlen = read(ipc->sock, &buf[len], bytes - len);
2705                 if (rlen < 1) {
2706                         connection_died(ipc, 0);
2707                         return;
2708                 }
2709                 len += rlen;
2710         }
2711 }
2712
2713
2714 /*
2715  * send binary to server
2716  */
2717 void serv_write(CtdlIPC *ipc, const char *buf, unsigned int nbytes)
2718 {
2719         unsigned int bytes_written = 0;
2720         int retval;
2721
2722 #if defined(HAVE_OPENSSL)
2723         if (ipc->ssl) {
2724                 serv_write_ssl(ipc, buf, nbytes);
2725                 return;
2726         }
2727 #endif
2728         while (bytes_written < nbytes) {
2729                 retval = write(ipc->sock, &buf[bytes_written],
2730                                nbytes - bytes_written);
2731                 if (retval < 1) {
2732                         connection_died(ipc, 0);
2733                         return;
2734                 }
2735                 bytes_written += retval;
2736         }
2737 }
2738
2739
2740 #ifdef HAVE_OPENSSL
2741 /*
2742  * input binary data from encrypted connection
2743  */
2744 static void serv_read_ssl(CtdlIPC* ipc, char *buf, unsigned int bytes)
2745 {
2746         int len, rlen;
2747         char junk[1];
2748
2749         len = 0;
2750         while (len < bytes) {
2751                 if (SSL_want_read(ipc->ssl)) {
2752                         if ((SSL_write(ipc->ssl, junk, 0)) < 1) {
2753                                 error_printf("SSL_write in serv_read:\n");
2754                                 ERR_print_errors_fp(stderr);
2755                         }
2756                 }
2757                 rlen = SSL_read(ipc->ssl, &buf[len], bytes - len);
2758                 if (rlen < 1) {
2759                         long errval;
2760
2761                         errval = SSL_get_error(ipc->ssl, rlen);
2762                         if (errval == SSL_ERROR_WANT_READ ||
2763                                         errval == SSL_ERROR_WANT_WRITE) {
2764                                 sleep(1);
2765                                 continue;
2766                         }
2767 /***
2768  Not sure why we'd want to handle these error codes any differently,
2769  but this definitely isn't the way to handle them.  Someone must have
2770  naively assumed that we could fall back to unencrypted communications,
2771  but all it does is just recursively blow the stack.
2772                         if (errval == SSL_ERROR_ZERO_RETURN ||
2773                                         errval == SSL_ERROR_SSL) {
2774                                 serv_read(ipc, &buf[len], bytes - len);
2775                                 return;
2776                         }
2777  ***/
2778                         error_printf("SSL_read in serv_read: %s\n",
2779                                         ERR_reason_error_string(ERR_peek_error()));
2780                         connection_died(ipc, 1);
2781                         return;
2782                 }
2783                 len += rlen;
2784         }
2785 }
2786
2787
2788 /*
2789  * send binary to server encrypted
2790  */
2791 static void serv_write_ssl(CtdlIPC *ipc, const char *buf, unsigned int nbytes)
2792 {
2793         unsigned int bytes_written = 0;
2794         int retval;
2795         char junk[1];
2796
2797         while (bytes_written < nbytes) {
2798                 if (SSL_want_write(ipc->ssl)) {
2799                         if ((SSL_read(ipc->ssl, junk, 0)) < 1) {
2800                                 error_printf("SSL_read in serv_write:\n");
2801                                 ERR_print_errors_fp(stderr);
2802                         }
2803                 }
2804                 retval = SSL_write(ipc->ssl, &buf[bytes_written],
2805                                 nbytes - bytes_written);
2806                 if (retval < 1) {
2807                         long errval;
2808
2809                         errval = SSL_get_error(ipc->ssl, retval);
2810                         if (errval == SSL_ERROR_WANT_READ ||
2811                                         errval == SSL_ERROR_WANT_WRITE) {
2812                                 sleep(1);
2813                                 continue;
2814                         }
2815                         if (errval == SSL_ERROR_ZERO_RETURN ||
2816                                         errval == SSL_ERROR_SSL) {
2817                                 serv_write(ipc, &buf[bytes_written],
2818                                                 nbytes - bytes_written);
2819                                 return;
2820                         }
2821                         error_printf("SSL_write in serv_write: %s\n",
2822                                         ERR_reason_error_string(ERR_peek_error()));
2823                         connection_died(ipc, 1);
2824                         return;
2825                 }
2826                 bytes_written += retval;
2827         }
2828 }
2829
2830
2831 #ifdef THREADED_CLIENT
2832 static void ssl_lock(int mode, int n, const char *file, int line)
2833 {
2834         if (mode & CRYPTO_LOCK)
2835                 pthread_mutex_lock(Critters[n]);
2836         else
2837                 pthread_mutex_unlock(Critters[n]);
2838 }
2839 #endif /* THREADED_CLIENT */
2840
2841
2842 static void CtdlIPC_init_OpenSSL(void)
2843 {
2844         int a;
2845         SSL_METHOD *ssl_method;
2846         DH *dh;
2847
2848         /* already done init */
2849         if (ssl_ctx) {
2850                 return;
2851         }
2852
2853         /* Get started */
2854         a = 0;
2855         ssl_ctx = NULL;
2856         dh = NULL;
2857         SSL_load_error_strings();
2858         SSLeay_add_ssl_algorithms();
2859
2860         /* Set up the SSL context in which we will oeprate */
2861         ssl_method = SSLv23_client_method();
2862         ssl_ctx = SSL_CTX_new(ssl_method);
2863         if (!ssl_ctx) {
2864                 error_printf("SSL_CTX_new failed: %s\n",
2865                                 ERR_reason_error_string(ERR_get_error()));
2866                 return;
2867         }
2868         /* Any reasonable cipher we can get */
2869         if (!(SSL_CTX_set_cipher_list(ssl_ctx, CIT_CIPHERS))) {
2870                 error_printf("No ciphers available for encryption\n");
2871                 return;
2872         }
2873         SSL_CTX_set_session_cache_mode(ssl_ctx, SSL_SESS_CACHE_BOTH);
2874
2875         /* Load DH parameters into the context */
2876         dh = DH_new();
2877         if (!dh) {
2878                 error_printf("Can't allocate a DH object: %s\n",
2879                                 ERR_reason_error_string(ERR_get_error()));
2880                 return;
2881         }
2882         if (!(BN_hex2bn(&(dh->p), DH_P))) {
2883                 error_printf("Can't assign DH_P: %s\n",
2884                                 ERR_reason_error_string(ERR_get_error()));
2885                 DH_free(dh);
2886                 return;
2887         }
2888         if (!(BN_hex2bn(&(dh->g), DH_G))) {
2889                 error_printf("Can't assign DH_G: %s\n",
2890                                 ERR_reason_error_string(ERR_get_error()));
2891                 DH_free(dh);
2892                 return;
2893         }
2894         dh->length = DH_L;
2895         SSL_CTX_set_tmp_dh(ssl_ctx, dh);
2896         DH_free(dh);
2897
2898 #ifdef THREADED_CLIENT
2899         /* OpenSSL requires callbacks for threaded clients */
2900         CRYPTO_set_locking_callback(ssl_lock);
2901         CRYPTO_set_id_callback(id_callback);
2902
2903         /* OpenSSL requires us to do semaphores for threaded clients */
2904         Critters = malloc(CRYPTO_num_locks() * sizeof (pthread_mutex_t *));
2905         if (!Critters) {
2906                 perror("malloc failed");
2907                 exit(1);
2908         } else {
2909                 for (a = 0; a < CRYPTO_num_locks(); a++) {
2910                         Critters[a] = malloc(sizeof (pthread_mutex_t));
2911                         if (!Critters[a]) {
2912                                 perror("malloc failed");
2913                                 exit(1);
2914                         }
2915                         pthread_mutex_init(Critters[a], NULL);
2916                 }
2917         }
2918 #endif /* THREADED_CLIENT */
2919 }
2920
2921
2922
2923 #ifdef THREADED_CLIENT
2924 static unsigned long id_callback(void) {
2925         return (unsigned long)pthread_self();
2926 }
2927 #endif /* THREADED_CLIENT */
2928 #endif /* HAVE_OPENSSL */
2929
2930
2931 int
2932 ReadNetworkChunk(CtdlIPC* ipc)
2933 {
2934         fd_set read_fd;
2935         int tries;
2936         int ret = 0;
2937         int err = 0;
2938         struct timeval tv;
2939         size_t n;
2940
2941         tv.tv_sec = 1;
2942         tv.tv_usec = 1000;
2943         tries = 0;
2944         n = 0;
2945         while (1)
2946         {
2947                 errno=0;
2948                 FD_ZERO(&read_fd);
2949                 FD_SET(ipc->sock, &read_fd);
2950                 ret = select(ipc->sock+1, &read_fd, NULL, NULL,  &tv);
2951
2952 //              fprintf(stderr, "\nselect failed: %d %d %s\n", ret,  err, strerror(err));
2953
2954                 if (ret > 0) {
2955
2956                         *(ipc->BufPtr) = '\0';
2957 //                      n = read(ipc->sock, ipc->BufPtr, ipc->BufSize  - (ipc->BufPtr - ipc->Buf) - 1);
2958                         n = recv(ipc->sock, ipc->BufPtr, ipc->BufSize  - (ipc->BufPtr - ipc->Buf) - 1, 0);
2959                         if (n > 0) {
2960                                 ipc->BufPtr[n]='\0';
2961                                 ipc->BufUsed += n;
2962                                 return n;
2963                         }
2964                         else
2965                                 return n;
2966                 }
2967                 else if (ret < 0) {
2968                         if (!(errno == EINTR || errno == EAGAIN))
2969                                 error_printf( "\nselect failed: %d %s\n", err, strerror(err));
2970                         return -1;
2971                 }/*
2972                 else {
2973                         tries ++;
2974                         if (tries >= 10)
2975                         n = read(ipc->sock, ipc->BufPtr, ipc->BufSize  - (ipc->BufPtr - ipc->Buf) - 1);
2976                         if (n > 0) {
2977                                 ipc->BufPtr[n]='\0';
2978                                 ipc->BufUsed += n;
2979                                 return n;
2980                         }
2981                         else {
2982                                 connection_died(ipc, 0);
2983                                 return -1;
2984                         }
2985                         }*/
2986         }
2987 }
2988
2989 /*
2990  * input string from socket - implemented in terms of serv_read()
2991  */
2992 #ifdef CHUNKED_READ
2993
2994 static void CtdlIPC_getline(CtdlIPC* ipc, char *buf)
2995 {
2996         int i, ntries;
2997         char *aptr, *bptr, *aeptr, *beptr;
2998
2999 //      error_printf("---\n");
3000
3001         beptr = buf + SIZ;
3002 #if defined(HAVE_OPENSSL)
3003         if (ipc->ssl) {
3004
3005                 /* Read one character at a time. */
3006                 for (i = 0;; i++) {
3007                         serv_read(ipc, &buf[i], 1);
3008                         if (buf[i] == '\n' || i == (SIZ-1))
3009                                 break;
3010                 }
3011
3012                 /* If we got a long line, discard characters until the newline. */
3013                 if (i == (SIZ-1))
3014                         while (buf[i] != '\n')
3015                                 serv_read(ipc, &buf[i], 1);
3016
3017                 /* Strip the trailing newline (and carriage return, if present) */
3018                 if (i>=0 && buf[i] == 10) buf[i--] = 0;
3019                 if (i>=0 && buf[i] == 13) buf[i--] = 0;
3020         }
3021         else
3022 #endif
3023         {
3024                 if (ipc->Buf == NULL)
3025                 {
3026                         ipc->BufSize = SIZ;
3027                         ipc->Buf = (char*) malloc(ipc->BufSize + 10);
3028                         *(ipc->Buf) = '\0';
3029                         ipc->BufPtr = ipc->Buf;
3030                 }
3031
3032                 ntries = 0;
3033 //              while ((ipc->BufUsed == 0)||(ntries++ > 10))
3034                 if (ipc->BufUsed == 0)
3035                         ReadNetworkChunk(ipc);
3036
3037 ////            if (ipc->BufUsed != 0) while (1)
3038                 bptr = buf;
3039
3040                 while (1)
3041                 {
3042                         aptr = ipc->BufPtr;
3043                         aeptr = ipc->Buf + ipc->BufSize;
3044                         while ((aptr < aeptr) &&
3045                                (bptr < beptr) &&
3046                                (*aptr != '\0') &&
3047                                (*aptr != '\n'))
3048                                 *(bptr++) = *(aptr++);
3049                         if ((*aptr == '\n') && (aptr < aeptr))
3050                         {
3051                                 /* Terminate it right, remove the line breaks */
3052                                 while ((aptr < aeptr) && ((*aptr == '\n') || (*aptr == '\r')))
3053                                         aptr ++;
3054                                 while ((aptr < aeptr ) && (*(aptr + 1) == '\0') )
3055                                         aptr ++;
3056                                 *(bptr++) = '\0';
3057 //                              fprintf(stderr, "parsing %d %d %d - %d %d %d %s\n", ipc->BufPtr - ipc->Buf, aptr - ipc->BufPtr, ipc->BufUsed , *aptr, *(aptr-1), *(aptr+1), buf);
3058                                 if ((bptr > buf + 1) && (*(bptr-1) == '\r'))
3059                                         *(--bptr) = '\0';
3060
3061                                 /* is there more in the buffer we need to read later? */
3062                                 if (ipc->Buf + ipc->BufUsed > aptr)
3063                                 {
3064                                         ipc->BufPtr = aptr;
3065                                 }
3066                                 else
3067                                 {
3068                                         ipc->BufUsed = 0;
3069                                         ipc->BufPtr = ipc->Buf;
3070                                 }
3071 //                              error_printf("----bla6\n");
3072                                 return;
3073
3074                         }/* should we move our read stuf to the bufferstart so we have more space at the end? */
3075                         else if ((ipc->BufPtr != ipc->Buf) &&
3076                                  (ipc->BufUsed > (ipc->BufSize  - (ipc->BufSize / 4))))
3077                         {
3078                                 size_t NewBufSize = ipc->BufSize * 2;
3079                                 int delta = (ipc->BufPtr - ipc->Buf);
3080                                 char *NewBuf;
3081
3082                                 /* if the line would end after our buffer, we should use a bigger buffer. */
3083                                 NewBuf = (char *)malloc (NewBufSize + 10);
3084                                 memcpy (NewBuf, ipc->BufPtr, ipc->BufUsed - delta);
3085                                 free(ipc->Buf);
3086                                 ipc->Buf = ipc->BufPtr = NewBuf;
3087                                 ipc->BufUsed -= delta;
3088                                 ipc->BufSize = NewBufSize;
3089                         }
3090                         if (ReadNetworkChunk(ipc) <0)
3091                         {
3092 //                              error_printf("----bla\n");
3093                                 return;
3094                         }
3095                 }
3096 ///             error_printf("----bl45761%s\nipc->BufUsed");
3097         }
3098 //      error_printf("----bla1\n");
3099 }
3100
3101 #else   /* CHUNKED_READ */
3102
3103 static void CtdlIPC_getline(CtdlIPC* ipc, char *buf)
3104 {
3105         int i;
3106
3107         /* Read one character at a time. */
3108         for (i = 0;; i++) {
3109                 serv_read(ipc, &buf[i], 1);
3110                 if (buf[i] == '\n' || i == (SIZ-1))
3111                         break;
3112         }
3113
3114         /* If we got a long line, discard characters until the newline. */
3115         if (i == (SIZ-1))
3116                 while (buf[i] != '\n')
3117                         serv_read(ipc, &buf[i], 1);
3118
3119         /* Strip the trailing newline (and carriage return, if present) */
3120         if (i>=0 && buf[i] == 10) buf[i--] = 0;
3121         if (i>=0 && buf[i] == 13) buf[i--] = 0;
3122 }
3123
3124
3125 #endif  /* CHUNKED_READ */
3126
3127
3128 void CtdlIPC_chat_recv(CtdlIPC* ipc, char* buf)
3129 {
3130         CtdlIPC_getline(ipc, buf);
3131 }
3132
3133 /*
3134  * send line to server - implemented in terms of serv_write()
3135  */
3136 static void CtdlIPC_putline(CtdlIPC *ipc, const char *buf)
3137 {
3138         char *cmd = NULL;
3139         int len;
3140
3141         len = strlen(buf);
3142         cmd = malloc(len + 2);
3143         if (!cmd) {
3144                 /* This requires no extra memory */
3145                 serv_write(ipc, buf, len);
3146                 serv_write(ipc, "\n", 1);
3147         } else {
3148                 /* This is network-optimized */
3149                 strncpy(cmd, buf, len);
3150                 strcpy(cmd + len, "\n");
3151                 serv_write(ipc, cmd, len + 1);
3152                 free(cmd);
3153         }
3154
3155         ipc->last_command_sent = time(NULL);
3156 }
3157
3158 void CtdlIPC_chat_send(CtdlIPC* ipc, const char* buf)
3159 {
3160         CtdlIPC_putline(ipc, buf);
3161 }
3162
3163
3164 /*
3165  * attach to server
3166  */
3167 CtdlIPC* CtdlIPC_new(int argc, char **argv, char *hostbuf, char *portbuf)
3168 {
3169         int a;
3170         char cithost[SIZ];
3171         char citport[SIZ];
3172         char sockpath[SIZ];
3173         CtdlIPC* ipc;
3174
3175         ipc = ialloc(CtdlIPC);
3176         if (!ipc) {
3177                 return 0;
3178         }
3179 #if defined(HAVE_OPENSSL)
3180         ipc->ssl = NULL;
3181         CtdlIPC_init_OpenSSL();
3182 #endif
3183 #if defined(HAVE_PTHREAD_H)
3184         pthread_mutex_init(&(ipc->mutex), NULL); /* Default fast mutex */
3185 #endif
3186         ipc->sock = -1;                 /* Not connected */
3187         ipc->isLocal = 0;               /* Not local, of course! */
3188         ipc->downloading = 0;
3189         ipc->uploading = 0;
3190         ipc->last_command_sent = 0L;
3191         ipc->network_status_cb = NULL;
3192         ipc->Buf = NULL;
3193         ipc->BufUsed = 0;
3194         ipc->BufPtr = NULL;
3195
3196         strcpy(cithost, DEFAULT_HOST);  /* default host */
3197         strcpy(citport, DEFAULT_PORT);  /* default port */
3198
3199         /* Allow caller to supply our values (Windows) */
3200         if (hostbuf && strlen(hostbuf) > 0)
3201                 strcpy(cithost, hostbuf);
3202         if (portbuf && strlen(portbuf) > 0)
3203                 strcpy(citport, portbuf);
3204
3205         /* Read host/port from command line if present */
3206         for (a = 0; a < argc; ++a) {
3207                 if (a == 0) {
3208                         /* do nothing */
3209                 } else if (a == 1) {
3210                         strcpy(cithost, argv[a]);
3211                 } else if (a == 2) {
3212                         strcpy(citport, argv[a]);
3213                 } else {
3214                         error_printf("%s: usage: ",argv[0]);
3215                         error_printf("%s [host] [port] ",argv[0]);
3216                         ifree(ipc);
3217                         errno = EINVAL;
3218                         return 0;
3219                 }
3220         }
3221
3222         if ((!strcmp(cithost, "localhost"))
3223            || (!strcmp(cithost, "127.0.0.1"))) {
3224                 ipc->isLocal = 1;
3225         }
3226
3227         /* If we're using a unix domain socket we can do a bunch of stuff */
3228         if (!strcmp(cithost, UDS)) {
3229                 if (!strcasecmp(citport, DEFAULT_PORT)) {
3230                         snprintf(sockpath, sizeof sockpath, file_citadel_socket);
3231                 }
3232                 else {
3233                         snprintf(sockpath, sizeof sockpath, "%s/%s", citport, "citadel.socket");
3234                 }
3235                 ipc->sock = uds_connectsock(&(ipc->isLocal), sockpath);
3236                 if (ipc->sock == -1) {
3237                         ifree(ipc);
3238                         return 0;
3239                 }
3240                 if (hostbuf != NULL) strcpy(hostbuf, cithost);
3241                 if (portbuf != NULL) strcpy(portbuf, sockpath);
3242                 return ipc;
3243         }
3244
3245         ipc->sock = connectsock(cithost, citport, "tcp", 504);
3246         if (ipc->sock == -1) {
3247                 ifree(ipc);
3248                 return 0;
3249         }
3250         if (hostbuf != NULL) strcpy(hostbuf, cithost);
3251         if (portbuf != NULL) strcpy(portbuf, citport);
3252         return ipc;
3253 }
3254
3255
3256 /*
3257  * Disconnect and delete the IPC class (destructor)
3258  */
3259 void CtdlIPC_delete(CtdlIPC* ipc)
3260 {
3261 #ifdef HAVE_OPENSSL
3262         if (ipc->ssl) {
3263                 SSL_shutdown(ipc->ssl);
3264                 SSL_free(ipc->ssl);
3265                 ipc->ssl = NULL;
3266         }
3267 #endif
3268         if (ipc->sock > -1) {
3269                 shutdown(ipc->sock, 2); /* Close it up */
3270                 ipc->sock = -1;
3271         }
3272         if (ipc->Buf != NULL)
3273                 free (ipc->Buf);
3274         ipc->Buf = NULL;
3275         ipc->BufPtr = NULL;
3276         ifree(ipc);
3277 }
3278
3279
3280 /*
3281  * Disconnect and delete the IPC class (destructor)
3282  * Also NULLs out the pointer
3283  */
3284 void CtdlIPC_delete_ptr(CtdlIPC** pipc)
3285 {
3286         CtdlIPC_delete(*pipc);
3287         *pipc = NULL;
3288 }
3289
3290
3291 /*
3292  * return the file descriptor of the server socket so we can select() on it.
3293  *
3294  * FIXME: This is only used in chat mode; eliminate it when chat mode gets
3295  * rewritten...
3296  */
3297 int CtdlIPC_getsockfd(CtdlIPC* ipc)
3298 {
3299         return ipc->sock;
3300 }
3301
3302
3303 /*
3304  * return one character
3305  *
3306  * FIXME: This is only used in chat mode; eliminate it when chat mode gets
3307  * rewritten...
3308  */
3309 char CtdlIPC_get(CtdlIPC* ipc)
3310 {
3311         char buf[2];
3312         char ch;
3313
3314         serv_read(ipc, buf, 1);
3315         ch = (int) buf[0];
3316
3317         return (ch);
3318 }