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