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