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