citadel/imap_misc.c

   1 /*
   2  * $Id$
   3  *
   4  *
   5  */
   6
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <pwd.h>
  15 #include <errno.h>
  16 #include <sys/types.h>
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #include <sys/wait.h>
  30 #include <ctype.h>
  31 #include <string.h>
  32 #include <limits.h>
  33 #include "citadel.h"
  34 #include "server.h"
  35 #include "sysdep_decls.h"
  36 #include "citserver.h"
  37 #include "support.h"
  38 #include "config.h"
  39 #include "serv_extensions.h"
  40 #include "room_ops.h"
  41 #include "user_ops.h"
  42 #include "policy.h"
  43 #include "database.h"
  44 #include "msgbase.h"
  45 #include "tools.h"
  46 #include "internet_addressing.h"
  47 #include "serv_imap.h"
  48 #include "imap_tools.h"
  49 #include "imap_fetch.h"
  50 #include "imap_misc.h"
  51 #include "genstamp.h"
  52
  53
  54
  55
  56
  57
  58 /*
  59  * imap_copy() calls imap_do_copy() to do its actual work, once it's
  60  * validated and boiled down the request a bit.  (returns 0 on success)
  61  */
  62 int imap_do_copy(char *destination_folder) {
  63         int i;
  64         char roomname[ROOMNAMELEN];
  65         struct ctdlroom qrbuf;
  66         struct timeval tv1, tv2, tv3;
  67         int num_selected = 0;
  68
  69         if (IMAP->num_msgs < 1) {
  70                 return(0);
  71         }
  72
  73         i = imap_grabroom(roomname, destination_folder, 0);
  74         if (i != 0) return(i);
  75
  76         /*
  77          * Optimization note ... ajc 2005oct09
  78          *
  79          * As we can see below, we're going to end up making lots of
  80          * repeated calls to CtdlCopyMsgToRoom() if the user selects
  81          * multiple messages and then does a copy or move operation.
  82          *
  83          * The plan (documented in this comment so I don't forget what I was
  84          * going to do) is to refactor CtdlCopyMsgToRoom() so that it accepts
  85          * a list of message ID's instead of a single one.  Then we can alter
  86          * the code which appears below, to copy all the message pointers in
  87          * one shot.
  88          *
  89          */
  90         gettimeofday(&tv1, NULL);
  91         for (i = 0; i < IMAP->num_msgs; ++i) {
  92                 if (IMAP->flags[i] & IMAP_SELECTED) {
  93                         ++num_selected;
  94                         CtdlCopyMsgToRoom(IMAP->msgids[i], roomname);
  95                 }
  96         }
  97
  98         /* Don't bother wasting any more time if there were no messages. */
  99         if (num_selected == 0) {
 100                 return(0);
 101         }
 102
 103         /* Enumerate lists of messages for which flags are toggled */
 104         long *seen_yes = NULL;
 105         int num_seen_yes = 0;
 106         long *seen_no = NULL;
 107         int num_seen_no = 0;
 108         long *answ_yes = NULL;
 109         int num_answ_yes = 0;
 110         long *answ_no = NULL;
 111         int num_answ_no = 0;
 112
 113         seen_yes = malloc(num_selected * sizeof(long));
 114         seen_no = malloc(num_selected * sizeof(long));
 115         answ_yes = malloc(num_selected * sizeof(long));
 116         answ_no = malloc(num_selected * sizeof(long));
 117
 118         for (i = 0; i < IMAP->num_msgs; ++i) {
 119                 if (IMAP->flags[i] & IMAP_SELECTED) {
 120                         if (IMAP->flags[i] & IMAP_SEEN) {
 121                                 seen_yes[num_seen_yes++] = IMAP->msgids[i];
 122                         }
 123                         if ((IMAP->flags[i] & IMAP_SEEN) == 0) {
 124                                 seen_no[num_seen_no++] = IMAP->msgids[i];
 125                         }
 126                         if (IMAP->flags[i] & IMAP_ANSWERED) {
 127                                 answ_yes[num_answ_yes++] = IMAP->msgids[i];
 128                         }
 129                         if ((IMAP->flags[i] & IMAP_ANSWERED) == 0) {
 130                                 answ_no[num_answ_no++] = IMAP->msgids[i];
 131                         }
 132                 }
 133         }
 134
 135         /* Set the flags... */
 136         gettimeofday(&tv2, NULL);
 137         i = getroom(&qrbuf, roomname);
 138         if (i == 0) {
 139                 CtdlSetSeen(seen_yes, num_seen_yes, 1,
 140                         ctdlsetseen_seen, NULL, &qrbuf
 141                 );
 142                 CtdlSetSeen(seen_no, num_seen_no, 0,
 143                         ctdlsetseen_seen, NULL, &qrbuf
 144                 );
 145                 CtdlSetSeen(answ_yes, num_answ_yes, 1,
 146                         ctdlsetseen_answered, NULL, &qrbuf
 147                 );
 148                 CtdlSetSeen(answ_no, num_answ_no, 0,
 149                         ctdlsetseen_answered, NULL, &qrbuf
 150                 );
 151         }
 152
 153         free(seen_yes);
 154         free(seen_no);
 155         free(answ_yes);
 156         free(answ_no);
 157
 158         gettimeofday(&tv3, NULL);
 159         lprintf(CTDL_DEBUG, "Copying the pointers took %ld microseconds\n",
 160                 (tv2.tv_usec + (tv2.tv_sec * 1000000))
 161                 - (tv1.tv_usec + (tv1.tv_sec * 1000000))
 162         );
 163         lprintf(CTDL_DEBUG, "Setting the flags took %ld microseconds\n",
 164                 (tv3.tv_usec + (tv3.tv_sec * 1000000))
 165                 - (tv2.tv_usec + (tv2.tv_sec * 1000000))
 166         );
 167         return(0);
 168 }
 169
 170
 171
 172 /*
 173  * This function is called by the main command loop.
 174  */
 175 void imap_copy(int num_parms, char *parms[]) {
 176         int ret;
 177
 178         if (num_parms != 4) {
 179                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 180                 return;
 181         }
 182
 183         if (imap_is_message_set(parms[2])) {
 184                 imap_pick_range(parms[2], 0);
 185         }
 186         else {
 187                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 188                 return;
 189         }
 190
 191         ret = imap_do_copy(parms[3]);
 192         if (!ret) {
 193                 cprintf("%s OK COPY completed\r\n", parms[0]);
 194         }
 195         else {
 196                 cprintf("%s NO COPY failed (error %d)\r\n", parms[0], ret);
 197         }
 198 }
 199
 200 /*
 201  * This function is called by the main command loop.
 202  */
 203 void imap_uidcopy(int num_parms, char *parms[]) {
 204
 205         if (num_parms != 5) {
 206                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 207                 return;
 208         }
 209
 210         if (imap_is_message_set(parms[3])) {
 211                 imap_pick_range(parms[3], 1);
 212         }
 213         else {
 214                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 215                 return;
 216         }
 217
 218         if (imap_do_copy(parms[4]) == 0) {
 219                 cprintf("%s OK UID COPY completed\r\n", parms[0]);
 220         }
 221         else {
 222                 cprintf("%s NO UID COPY failed\r\n", parms[0]);
 223         }
 224 }
 225
 226
 227 /*
 228  * Poll for instant messages (yeah, we can do this in IMAP ... I think)
 229  */
 230 void imap_print_instant_messages(void) {
 231         struct ExpressMessage *ptr, *holdptr;
 232         char *dumpomatic = NULL;
 233         char tmp[SIZ];
 234         int i;
 235         size_t size, size2;
 236         struct tm stamp;
 237
 238         if (CC->FirstExpressMessage == NULL) {
 239                 return;
 240         }
 241         begin_critical_section(S_SESSION_TABLE);
 242         ptr = CC->FirstExpressMessage;
 243         CC->FirstExpressMessage = NULL;
 244         end_critical_section(S_SESSION_TABLE);
 245
 246         while (ptr != NULL) {
 247                 localtime_r(&(ptr->timestamp), &stamp);
 248                 size = strlen(ptr->text) + SIZ;
 249                 dumpomatic = malloc(size);
 250                 strcpy(dumpomatic, "");
 251                 if (ptr->flags && EM_BROADCAST)
 252                         strcat(dumpomatic, "Broadcast message ");
 253                 else if (ptr->flags && EM_CHAT)
 254                         strcat(dumpomatic, "Chat request ");
 255                 else if (ptr->flags && EM_GO_AWAY)
 256                         strcat(dumpomatic, "Please logoff now, as requested ");
 257                 else
 258                         strcat(dumpomatic, "Message ");
 259
 260                 /* Timestamp.  Can this be improved? */
 261                 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)
 262                         sprintf(tmp, "at 12:%02d%cm",
 263                                 stamp.tm_min,
 264                                 stamp.tm_hour ? 'p' : 'a');
 265                 else if (stamp.tm_hour > 12)            /* pm */
 266                         sprintf(tmp, "at %d:%02dpm",
 267                                 stamp.tm_hour - 12,
 268                                 stamp.tm_min);
 269                 else                                    /* am */
 270                         sprintf(tmp, "at %d:%02dam",
 271                                 stamp.tm_hour, stamp.tm_min);
 272                 strcat(dumpomatic, tmp);
 273
 274                 size2 = strlen(dumpomatic);
 275                 snprintf(&dumpomatic[size2], size - size2,
 276                         " from %s:\n", ptr->sender);
 277                 if (ptr->text != NULL)
 278                         strcat(dumpomatic, ptr->text);
 279
 280                 holdptr = ptr->next;
 281                 if (ptr->text != NULL) free(ptr->text);
 282                 free(ptr);
 283                 ptr = holdptr;
 284
 285                 for (i=0; i<strlen(dumpomatic); ++i) {
 286                         if (!isprint(dumpomatic[i])) dumpomatic[i] = ' ';
 287                         if (dumpomatic[i]=='\\') dumpomatic[i]='/';
 288                         if (dumpomatic[i]=='\"') dumpomatic[i]='\'';
 289                 }
 290
 291                 cprintf("* OK [ALERT] %s\r\n", dumpomatic);
 292                 free(dumpomatic);
 293         }
 294         cprintf("000\n");
 295 }
 296
 297
 298 /*
 299  * imap_do_append_flags() is called by imap_append() to set any flags that
 300  * the client specified at append time.
 301  *
 302  * FIXME find a way to do these in bulk so we don't max out our db journal
 303  */
 304 void imap_do_append_flags(long new_msgnum, char *new_message_flags) {
 305         char flags[32];
 306         char this_flag[sizeof flags];
 307         int i;
 308
 309         if (new_message_flags == NULL) return;
 310         if (strlen(new_message_flags) == 0) return;
 311
 312         safestrncpy(flags, new_message_flags, sizeof flags);
 313
 314         for (i=0; i<num_tokens(flags, ' '); ++i) {
 315                 extract_token(this_flag, flags, i, ' ', sizeof this_flag);
 316                 if (this_flag[0] == '\\') strcpy(this_flag, &this_flag[1]);
 317                 if (!strcasecmp(this_flag, "Seen")) {
 318                         CtdlSetSeen(&new_msgnum, 1, 1, ctdlsetseen_seen,
 319                                 NULL, NULL);
 320                 }
 321                 if (!strcasecmp(this_flag, "Answered")) {
 322                         CtdlSetSeen(&new_msgnum, 1, 1, ctdlsetseen_answered,
 323                                 NULL, NULL);
 324                 }
 325         }
 326 }
 327
 328
 329 /*
 330  * This function is called by the main command loop.
 331  */
 332 void imap_append(int num_parms, char *parms[]) {
 333         long literal_length;
 334         long bytes_transferred;
 335         long stripped_length = 0;
 336         struct CtdlMessage *msg;
 337         long new_msgnum = (-1L);
 338         int ret = 0;
 339         char roomname[ROOMNAMELEN];
 340         char buf[SIZ];
 341         char savedroom[ROOMNAMELEN];
 342         int msgs, new;
 343         int i;
 344         char new_message_flags[SIZ];
 345
 346         if (num_parms < 4) {
 347                 cprintf("%s BAD usage error\r\n", parms[0]);
 348                 return;
 349         }
 350
 351         if ( (parms[num_parms-1][0] != '{')
 352            || (parms[num_parms-1][strlen(parms[num_parms-1])-1] != '}') )  {
 353                 cprintf("%s BAD no message literal supplied\r\n", parms[0]);
 354                 return;
 355         }
 356
 357         strcpy(new_message_flags, "");
 358         if (num_parms >= 5) {
 359                 for (i=3; i<num_parms; ++i) {
 360                         strcat(new_message_flags, parms[i]);
 361                         strcat(new_message_flags, " ");
 362                 }
 363                 stripallbut(new_message_flags, '(', ')');
 364         }
 365
 366         /* This is how we'd do this if it were relevant in our data store.
 367          * if (num_parms >= 6) {
 368          *  new_message_internaldate = parms[4];
 369          * }
 370          */
 371
 372         literal_length = atol(&parms[num_parms-1][1]);
 373         if (literal_length < 1) {
 374                 cprintf("%s BAD Message length must be at least 1.\r\n",
 375                         parms[0]);
 376                 return;
 377         }
 378
 379         imap_free_transmitted_message();        /* just in case. */
 380         IMAP->transmitted_message = malloc(literal_length + 1);
 381         if (IMAP->transmitted_message == NULL) {
 382                 cprintf("%s NO Cannot allocate memory.\r\n", parms[0]);
 383                 return;
 384         }
 385         IMAP->transmitted_length = literal_length;
 386
 387         cprintf("+ Transmit message now.\r\n");
 388
 389         bytes_transferred = 0;
 390
 391         ret = client_read(IMAP->transmitted_message, literal_length);
 392         IMAP->transmitted_message[literal_length] = 0;
 393
 394         if (ret != 1) {
 395                 cprintf("%s NO Read failed.\r\n", parms[0]);
 396                 return;
 397         }
 398
 399         /* Client will transmit a trailing CRLF after the literal (the message
 400          * text) is received.  This call to client_getln() absorbs it.
 401          */
 402         flush_output();
 403         client_getln(buf, sizeof buf);
 404
 405         /* Convert RFC822 newlines (CRLF) to Unix newlines (LF) */
 406         lprintf(CTDL_DEBUG, "Converting CRLF to LF\n");
 407         stripped_length = 0;
 408         for (i=0; i<literal_length; ++i) {
 409                 if (strncmp(&IMAP->transmitted_message[i], "\r\n", 2)) {
 410                         IMAP->transmitted_message[stripped_length++] =
 411                                 IMAP->transmitted_message[i];
 412                 }
 413         }
 414         literal_length = stripped_length;
 415         IMAP->transmitted_message[literal_length] = 0;  /* reterminate it */
 416
 417         lprintf(CTDL_DEBUG, "Converting message format\n");
 418         msg = convert_internet_message(IMAP->transmitted_message);
 419         IMAP->transmitted_message = NULL;
 420         IMAP->transmitted_length = 0;
 421
 422         ret = imap_grabroom(roomname, parms[2], 0);
 423         if (ret != 0) {
 424                 cprintf("%s NO Invalid mailbox name or access denied\r\n",
 425                         parms[0]);
 426                 return;
 427         }
 428
 429         /*
 430          * usergoto() formally takes us to the desired room.  (If another
 431          * folder is selected, save its name so we can return there!!!!!)
 432          */
 433         if (IMAP->selected) {
 434                 strcpy(savedroom, CC->room.QRname);
 435         }
 436         usergoto(roomname, 0, 0, &msgs, &new);
 437
 438         /* If the user is locally authenticated, FORCE the From: header to
 439          * show up as the real sender.  FIXME do we really want to do this?
 440          * Probably should make it site-definable or even room-definable.
 441          *
 442          * For now, we allow "forgeries" if the room is one of the user's
 443          * private mailboxes.
 444          */
 445         if (CC->logged_in) {
 446            if ( (CC->room.QRflags & QR_MAILBOX) == 0) {
 447                 if (msg->cm_fields['A'] != NULL) free(msg->cm_fields['A']);
 448                 if (msg->cm_fields['N'] != NULL) free(msg->cm_fields['N']);
 449                 if (msg->cm_fields['H'] != NULL) free(msg->cm_fields['H']);
 450                 msg->cm_fields['A'] = strdup(CC->user.fullname);
 451                 msg->cm_fields['N'] = strdup(config.c_nodename);
 452                 msg->cm_fields['H'] = strdup(config.c_humannode);
 453             }
 454         }
 455
 456         /*
 457          * Can we post here?
 458          */
 459         ret = CtdlDoIHavePermissionToPostInThisRoom(buf, sizeof buf);
 460
 461         if (ret) {
 462                 /* Nope ... print an error message */
 463                 cprintf("%s NO %s\r\n", parms[0], buf);
 464         }
 465
 466         else {
 467                 /* Yes ... go ahead and post! */
 468                 if (msg != NULL) {
 469                         new_msgnum = CtdlSubmitMsg(msg, NULL, "");
 470                 }
 471                 if (new_msgnum >= 0L) {
 472                         cprintf("%s OK APPEND completed\r\n", parms[0]);
 473                 }
 474                 else {
 475                         cprintf("%s BAD Error %ld saving message to disk.\r\n",
 476                                 parms[0], new_msgnum);
 477                 }
 478         }
 479
 480         /*
 481          * IMAP protocol response to client has already been sent by now.
 482          *
 483          * If another folder is selected, go back to that room so we can resume
 484          * our happy day without violent explosions.
 485          */
 486         if (IMAP->selected) {
 487                 usergoto(savedroom, 0, 0, &msgs, &new);
 488         }
 489
 490         /* We don't need this buffer anymore */
 491         CtdlFreeMessage(msg);
 492
 493         if (new_message_flags != NULL) {
 494                 imap_do_append_flags(new_msgnum, new_message_flags);
 495         }
 496 }