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 pointers: %ld microseconds / Setting flags: %ld microseconds\n",
 160                 (tv2.tv_usec + (tv2.tv_sec * 1000000)) - (tv1.tv_usec + (tv1.tv_sec * 1000000)),
 161                 (tv3.tv_usec + (tv3.tv_sec * 1000000)) - (tv2.tv_usec + (tv2.tv_sec * 1000000))
 162         );
 163         return(0);
 164 }
 165
 166
 167
 168 /*
 169  * This function is called by the main command loop.
 170  */
 171 void imap_copy(int num_parms, char *parms[]) {
 172         int ret;
 173
 174         if (num_parms != 4) {
 175                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 176                 return;
 177         }
 178
 179         if (imap_is_message_set(parms[2])) {
 180                 imap_pick_range(parms[2], 0);
 181         }
 182         else {
 183                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 184                 return;
 185         }
 186
 187         ret = imap_do_copy(parms[3]);
 188         if (!ret) {
 189                 cprintf("%s OK COPY completed\r\n", parms[0]);
 190         }
 191         else {
 192                 cprintf("%s NO COPY failed (error %d)\r\n", parms[0], ret);
 193         }
 194 }
 195
 196 /*
 197  * This function is called by the main command loop.
 198  */
 199 void imap_uidcopy(int num_parms, char *parms[]) {
 200
 201         if (num_parms != 5) {
 202                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 203                 return;
 204         }
 205
 206         if (imap_is_message_set(parms[3])) {
 207                 imap_pick_range(parms[3], 1);
 208         }
 209         else {
 210                 cprintf("%s BAD invalid parameters\r\n", parms[0]);
 211                 return;
 212         }
 213
 214         if (imap_do_copy(parms[4]) == 0) {
 215                 cprintf("%s OK UID COPY completed\r\n", parms[0]);
 216         }
 217         else {
 218                 cprintf("%s NO UID COPY failed\r\n", parms[0]);
 219         }
 220 }
 221
 222
 223 /*
 224  * Poll for instant messages (yeah, we can do this in IMAP ... I think)
 225  */
 226 void imap_print_instant_messages(void) {
 227         struct ExpressMessage *ptr, *holdptr;
 228         char *dumpomatic = NULL;
 229         char tmp[SIZ];
 230         int i;
 231         size_t size, size2;
 232         struct tm stamp;
 233
 234         if (CC->FirstExpressMessage == NULL) {
 235                 return;
 236         }
 237         begin_critical_section(S_SESSION_TABLE);
 238         ptr = CC->FirstExpressMessage;
 239         CC->FirstExpressMessage = NULL;
 240         end_critical_section(S_SESSION_TABLE);
 241
 242         while (ptr != NULL) {
 243                 localtime_r(&(ptr->timestamp), &stamp);
 244                 size = strlen(ptr->text) + SIZ;
 245                 dumpomatic = malloc(size);
 246                 strcpy(dumpomatic, "");
 247                 if (ptr->flags && EM_BROADCAST)
 248                         strcat(dumpomatic, "Broadcast message ");
 249                 else if (ptr->flags && EM_CHAT)
 250                         strcat(dumpomatic, "Chat request ");
 251                 else if (ptr->flags && EM_GO_AWAY)
 252                         strcat(dumpomatic, "Please logoff now, as requested ");
 253                 else
 254                         strcat(dumpomatic, "Message ");
 255
 256                 /* Timestamp.  Can this be improved? */
 257                 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)
 258                         sprintf(tmp, "at 12:%02d%cm",
 259                                 stamp.tm_min,
 260                                 stamp.tm_hour ? 'p' : 'a');
 261                 else if (stamp.tm_hour > 12)            /* pm */
 262                         sprintf(tmp, "at %d:%02dpm",
 263                                 stamp.tm_hour - 12,
 264                                 stamp.tm_min);
 265                 else                                    /* am */
 266                         sprintf(tmp, "at %d:%02dam",
 267                                 stamp.tm_hour, stamp.tm_min);
 268                 strcat(dumpomatic, tmp);
 269
 270                 size2 = strlen(dumpomatic);
 271                 snprintf(&dumpomatic[size2], size - size2,
 272                         " from %s:\n", ptr->sender);
 273                 if (ptr->text != NULL)
 274                         strcat(dumpomatic, ptr->text);
 275
 276                 holdptr = ptr->next;
 277                 if (ptr->text != NULL) free(ptr->text);
 278                 free(ptr);
 279                 ptr = holdptr;
 280
 281                 for (i=0; i<strlen(dumpomatic); ++i) {
 282                         if (!isprint(dumpomatic[i])) dumpomatic[i] = ' ';
 283                         if (dumpomatic[i]=='\\') dumpomatic[i]='/';
 284                         if (dumpomatic[i]=='\"') dumpomatic[i]='\'';
 285                 }
 286
 287                 cprintf("* OK [ALERT] %s\r\n", dumpomatic);
 288                 free(dumpomatic);
 289         }
 290         cprintf("000\n");
 291 }
 292
 293
 294 /*
 295  * imap_do_append_flags() is called by imap_append() to set any flags that
 296  * the client specified at append time.
 297  *
 298  * FIXME find a way to do these in bulk so we don't max out our db journal
 299  */
 300 void imap_do_append_flags(long new_msgnum, char *new_message_flags) {
 301         char flags[32];
 302         char this_flag[sizeof flags];
 303         int i;
 304
 305         if (new_message_flags == NULL) return;
 306         if (strlen(new_message_flags) == 0) return;
 307
 308         safestrncpy(flags, new_message_flags, sizeof flags);
 309
 310         for (i=0; i<num_tokens(flags, ' '); ++i) {
 311                 extract_token(this_flag, flags, i, ' ', sizeof this_flag);
 312                 if (this_flag[0] == '\\') strcpy(this_flag, &this_flag[1]);
 313                 if (!strcasecmp(this_flag, "Seen")) {
 314                         CtdlSetSeen(&new_msgnum, 1, 1, ctdlsetseen_seen,
 315                                 NULL, NULL);
 316                 }
 317                 if (!strcasecmp(this_flag, "Answered")) {
 318                         CtdlSetSeen(&new_msgnum, 1, 1, ctdlsetseen_answered,
 319                                 NULL, NULL);
 320                 }
 321         }
 322 }
 323
 324
 325 /*
 326  * This function is called by the main command loop.
 327  */
 328 void imap_append(int num_parms, char *parms[]) {
 329         long literal_length;
 330         long bytes_transferred;
 331         long stripped_length = 0;
 332         struct CtdlMessage *msg;
 333         long new_msgnum = (-1L);
 334         int ret = 0;
 335         char roomname[ROOMNAMELEN];
 336         char buf[SIZ];
 337         char savedroom[ROOMNAMELEN];
 338         int msgs, new;
 339         int i;
 340         char new_message_flags[SIZ];
 341
 342         if (num_parms < 4) {
 343                 cprintf("%s BAD usage error\r\n", parms[0]);
 344                 return;
 345         }
 346
 347         if ( (parms[num_parms-1][0] != '{')
 348            || (parms[num_parms-1][strlen(parms[num_parms-1])-1] != '}') )  {
 349                 cprintf("%s BAD no message literal supplied\r\n", parms[0]);
 350                 return;
 351         }
 352
 353         strcpy(new_message_flags, "");
 354         if (num_parms >= 5) {
 355                 for (i=3; i<num_parms; ++i) {
 356                         strcat(new_message_flags, parms[i]);
 357                         strcat(new_message_flags, " ");
 358                 }
 359                 stripallbut(new_message_flags, '(', ')');
 360         }
 361
 362         /* This is how we'd do this if it were relevant in our data store.
 363          * if (num_parms >= 6) {
 364          *  new_message_internaldate = parms[4];
 365          * }
 366          */
 367
 368         literal_length = atol(&parms[num_parms-1][1]);
 369         if (literal_length < 1) {
 370                 cprintf("%s BAD Message length must be at least 1.\r\n",
 371                         parms[0]);
 372                 return;
 373         }
 374
 375         imap_free_transmitted_message();        /* just in case. */
 376         IMAP->transmitted_message = malloc(literal_length + 1);
 377         if (IMAP->transmitted_message == NULL) {
 378                 cprintf("%s NO Cannot allocate memory.\r\n", parms[0]);
 379                 return;
 380         }
 381         IMAP->transmitted_length = literal_length;
 382
 383         cprintf("+ Transmit message now.\r\n");
 384
 385         bytes_transferred = 0;
 386
 387         ret = client_read(IMAP->transmitted_message, literal_length);
 388         IMAP->transmitted_message[literal_length] = 0;
 389
 390         if (ret != 1) {
 391                 cprintf("%s NO Read failed.\r\n", parms[0]);
 392                 return;
 393         }
 394
 395         /* Client will transmit a trailing CRLF after the literal (the message
 396          * text) is received.  This call to client_getln() absorbs it.
 397          */
 398         flush_output();
 399         client_getln(buf, sizeof buf);
 400
 401         /* Convert RFC822 newlines (CRLF) to Unix newlines (LF) */
 402         lprintf(CTDL_DEBUG, "Converting CRLF to LF\n");
 403         stripped_length = 0;
 404         for (i=0; i<literal_length; ++i) {
 405                 if (strncmp(&IMAP->transmitted_message[i], "\r\n", 2)) {
 406                         IMAP->transmitted_message[stripped_length++] =
 407                                 IMAP->transmitted_message[i];
 408                 }
 409         }
 410         literal_length = stripped_length;
 411         IMAP->transmitted_message[literal_length] = 0;  /* reterminate it */
 412
 413         lprintf(CTDL_DEBUG, "Converting message format\n");
 414         msg = convert_internet_message(IMAP->transmitted_message);
 415         IMAP->transmitted_message = NULL;
 416         IMAP->transmitted_length = 0;
 417
 418         ret = imap_grabroom(roomname, parms[2], 0);
 419         if (ret != 0) {
 420                 cprintf("%s NO Invalid mailbox name or access denied\r\n",
 421                         parms[0]);
 422                 return;
 423         }
 424
 425         /*
 426          * usergoto() formally takes us to the desired room.  (If another
 427          * folder is selected, save its name so we can return there!!!!!)
 428          */
 429         if (IMAP->selected) {
 430                 strcpy(savedroom, CC->room.QRname);
 431         }
 432         usergoto(roomname, 0, 0, &msgs, &new);
 433
 434         /* If the user is locally authenticated, FORCE the From: header to
 435          * show up as the real sender.  FIXME do we really want to do this?
 436          * Probably should make it site-definable or even room-definable.
 437          *
 438          * For now, we allow "forgeries" if the room is one of the user's
 439          * private mailboxes.
 440          */
 441         if (CC->logged_in) {
 442            if ( (CC->room.QRflags & QR_MAILBOX) == 0) {
 443                 if (msg->cm_fields['A'] != NULL) free(msg->cm_fields['A']);
 444                 if (msg->cm_fields['N'] != NULL) free(msg->cm_fields['N']);
 445                 if (msg->cm_fields['H'] != NULL) free(msg->cm_fields['H']);
 446                 msg->cm_fields['A'] = strdup(CC->user.fullname);
 447                 msg->cm_fields['N'] = strdup(config.c_nodename);
 448                 msg->cm_fields['H'] = strdup(config.c_humannode);
 449             }
 450         }
 451
 452         /*
 453          * Can we post here?
 454          */
 455         ret = CtdlDoIHavePermissionToPostInThisRoom(buf, sizeof buf);
 456
 457         if (ret) {
 458                 /* Nope ... print an error message */
 459                 cprintf("%s NO %s\r\n", parms[0], buf);
 460         }
 461
 462         else {
 463                 /* Yes ... go ahead and post! */
 464                 if (msg != NULL) {
 465                         new_msgnum = CtdlSubmitMsg(msg, NULL, "");
 466                 }
 467                 if (new_msgnum >= 0L) {
 468                         cprintf("%s OK APPEND completed\r\n", parms[0]);
 469                 }
 470                 else {
 471                         cprintf("%s BAD Error %ld saving message to disk.\r\n",
 472                                 parms[0], new_msgnum);
 473                 }
 474         }
 475
 476         /*
 477          * IMAP protocol response to client has already been sent by now.
 478          *
 479          * If another folder is selected, go back to that room so we can resume
 480          * our happy day without violent explosions.
 481          */
 482         if (IMAP->selected) {
 483                 usergoto(savedroom, 0, 0, &msgs, &new);
 484         }
 485
 486         /* We don't need this buffer anymore */
 487         CtdlFreeMessage(msg);
 488
 489         if (new_message_flags != NULL) {
 490                 imap_do_append_flags(new_msgnum, new_message_flags);
 491         }
 492 }