citadel/citadel_ipc.c

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