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