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