imapext-2007

annotate src/osdep/amiga/tenex.c @ 0:ada5e610ab86

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imap-2007e
author yuuji@gentei.org
date Mon, 14 Sep 2009 15:17:45 +0900
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yuuji@0 1 /* ========================================================================
yuuji@0 2 * Copyright 1988-2007 University of Washington
yuuji@0 3 *
yuuji@0 4 * Licensed under the Apache License, Version 2.0 (the "License");
yuuji@0 5 * you may not use this file except in compliance with the License.
yuuji@0 6 * You may obtain a copy of the License at
yuuji@0 7 *
yuuji@0 8 * http://www.apache.org/licenses/LICENSE-2.0
yuuji@0 9 *
yuuji@0 10 *
yuuji@0 11 * ========================================================================
yuuji@0 12 */
yuuji@0 13
yuuji@0 14 /*
yuuji@0 15 * Program: Tenex mail routines
yuuji@0 16 *
yuuji@0 17 * Author: Mark Crispin
yuuji@0 18 * Networks and Distributed Computing
yuuji@0 19 * Computing & Communications
yuuji@0 20 * University of Washington
yuuji@0 21 * Administration Building, AG-44
yuuji@0 22 * Seattle, WA 98195
yuuji@0 23 * Internet: MRC@CAC.Washington.EDU
yuuji@0 24 *
yuuji@0 25 * Date: 22 May 1990
yuuji@0 26 * Last Edited: 11 October 2007
yuuji@0 27 */
yuuji@0 28
yuuji@0 29
yuuji@0 30 /* FILE TIME SEMANTICS
yuuji@0 31 *
yuuji@0 32 * The atime is the last read time of the file.
yuuji@0 33 * The mtime is the last flags update time of the file.
yuuji@0 34 * The ctime is the last write time of the file.
yuuji@0 35 *
yuuji@0 36 * TEXT SIZE SEMANTICS
yuuji@0 37 *
yuuji@0 38 * Most of the text sizes are in internal (LF-only) form, except for the
yuuji@0 39 * msg.text size. Beware.
yuuji@0 40 */
yuuji@0 41
yuuji@0 42 #include <stdio.h>
yuuji@0 43 #include <ctype.h>
yuuji@0 44 #include <errno.h>
yuuji@0 45 extern int errno; /* just in case */
yuuji@0 46 #include "mail.h"
yuuji@0 47 #include "osdep.h"
yuuji@0 48 #include <sys/stat.h>
yuuji@0 49 #include "misc.h"
yuuji@0 50 #include "dummy.h"
yuuji@0 51
yuuji@0 52 /* TENEX I/O stream local data */
yuuji@0 53
yuuji@0 54 typedef struct tenex_local {
yuuji@0 55 unsigned int shouldcheck: 1; /* if ping should do a check instead */
yuuji@0 56 unsigned int mustcheck: 1; /* if ping must do a check instead */
yuuji@0 57 int fd; /* file descriptor for I/O */
yuuji@0 58 off_t filesize; /* file size parsed */
yuuji@0 59 time_t filetime; /* last file time */
yuuji@0 60 time_t lastsnarf; /* local snarf time */
yuuji@0 61 unsigned char *buf; /* temporary buffer */
yuuji@0 62 unsigned long buflen; /* current size of temporary buffer */
yuuji@0 63 unsigned long uid; /* current text uid */
yuuji@0 64 SIZEDTEXT text; /* current text */
yuuji@0 65 } TENEXLOCAL;
yuuji@0 66
yuuji@0 67
yuuji@0 68 /* Convenient access to local data */
yuuji@0 69
yuuji@0 70 #define LOCAL ((TENEXLOCAL *) stream->local)
yuuji@0 71
yuuji@0 72
yuuji@0 73 /* Function prototypes */
yuuji@0 74
yuuji@0 75 DRIVER *tenex_valid (char *name);
yuuji@0 76 int tenex_isvalid (char *name,char *tmp);
yuuji@0 77 void *tenex_parameters (long function,void *value);
yuuji@0 78 void tenex_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
yuuji@0 79 void tenex_list (MAILSTREAM *stream,char *ref,char *pat);
yuuji@0 80 void tenex_lsub (MAILSTREAM *stream,char *ref,char *pat);
yuuji@0 81 long tenex_create (MAILSTREAM *stream,char *mailbox);
yuuji@0 82 long tenex_delete (MAILSTREAM *stream,char *mailbox);
yuuji@0 83 long tenex_rename (MAILSTREAM *stream,char *old,char *newname);
yuuji@0 84 long tenex_status (MAILSTREAM *stream,char *mbx,long flags);
yuuji@0 85 MAILSTREAM *tenex_open (MAILSTREAM *stream);
yuuji@0 86 void tenex_close (MAILSTREAM *stream,long options);
yuuji@0 87 void tenex_fast (MAILSTREAM *stream,char *sequence,long flags);
yuuji@0 88 void tenex_flags (MAILSTREAM *stream,char *sequence,long flags);
yuuji@0 89 char *tenex_header (MAILSTREAM *stream,unsigned long msgno,
yuuji@0 90 unsigned long *length,long flags);
yuuji@0 91 long tenex_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
yuuji@0 92 void tenex_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);
yuuji@0 93 void tenex_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);
yuuji@0 94 long tenex_ping (MAILSTREAM *stream);
yuuji@0 95 void tenex_check (MAILSTREAM *stream);
yuuji@0 96 void tenex_snarf (MAILSTREAM *stream);
yuuji@0 97 long tenex_expunge (MAILSTREAM *stream,char *sequence,long options);
yuuji@0 98 long tenex_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
yuuji@0 99 long tenex_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
yuuji@0 100
yuuji@0 101 unsigned long tenex_size (MAILSTREAM *stream,unsigned long m);
yuuji@0 102 char *tenex_file (char *dst,char *name);
yuuji@0 103 long tenex_parse (MAILSTREAM *stream);
yuuji@0 104 MESSAGECACHE *tenex_elt (MAILSTREAM *stream,unsigned long msgno);
yuuji@0 105 void tenex_read_flags (MAILSTREAM *stream,MESSAGECACHE *elt);
yuuji@0 106 void tenex_update_status (MAILSTREAM *stream,unsigned long msgno,
yuuji@0 107 long syncflag);
yuuji@0 108 unsigned long tenex_hdrpos (MAILSTREAM *stream,unsigned long msgno,
yuuji@0 109 unsigned long *size);
yuuji@0 110
yuuji@0 111 /* Tenex mail routines */
yuuji@0 112
yuuji@0 113
yuuji@0 114 /* Driver dispatch used by MAIL */
yuuji@0 115
yuuji@0 116 DRIVER tenexdriver = {
yuuji@0 117 "tenex", /* driver name */
yuuji@0 118 DR_LOCAL|DR_MAIL|DR_NOSTICKY|DR_LOCKING,
yuuji@0 119 /* driver flags */
yuuji@0 120 (DRIVER *) NIL, /* next driver */
yuuji@0 121 tenex_valid, /* mailbox is valid for us */
yuuji@0 122 tenex_parameters, /* manipulate parameters */
yuuji@0 123 tenex_scan, /* scan mailboxes */
yuuji@0 124 tenex_list, /* list mailboxes */
yuuji@0 125 tenex_lsub, /* list subscribed mailboxes */
yuuji@0 126 NIL, /* subscribe to mailbox */
yuuji@0 127 NIL, /* unsubscribe from mailbox */
yuuji@0 128 dummy_create, /* create mailbox */
yuuji@0 129 tenex_delete, /* delete mailbox */
yuuji@0 130 tenex_rename, /* rename mailbox */
yuuji@0 131 tenex_status, /* status of mailbox */
yuuji@0 132 tenex_open, /* open mailbox */
yuuji@0 133 tenex_close, /* close mailbox */
yuuji@0 134 tenex_fast, /* fetch message "fast" attributes */
yuuji@0 135 tenex_flags, /* fetch message flags */
yuuji@0 136 NIL, /* fetch overview */
yuuji@0 137 NIL, /* fetch message envelopes */
yuuji@0 138 tenex_header, /* fetch message header */
yuuji@0 139 tenex_text, /* fetch message body */
yuuji@0 140 NIL, /* fetch partial message text */
yuuji@0 141 NIL, /* unique identifier */
yuuji@0 142 NIL, /* message number */
yuuji@0 143 tenex_flag, /* modify flags */
yuuji@0 144 tenex_flagmsg, /* per-message modify flags */
yuuji@0 145 NIL, /* search for message based on criteria */
yuuji@0 146 NIL, /* sort messages */
yuuji@0 147 NIL, /* thread messages */
yuuji@0 148 tenex_ping, /* ping mailbox to see if still alive */
yuuji@0 149 tenex_check, /* check for new messages */
yuuji@0 150 tenex_expunge, /* expunge deleted messages */
yuuji@0 151 tenex_copy, /* copy messages to another mailbox */
yuuji@0 152 tenex_append, /* append string message to mailbox */
yuuji@0 153 NIL /* garbage collect stream */
yuuji@0 154 };
yuuji@0 155
yuuji@0 156 /* prototype stream */
yuuji@0 157 MAILSTREAM tenexproto = {&tenexdriver};
yuuji@0 158
yuuji@0 159 /* Tenex mail validate mailbox
yuuji@0 160 * Accepts: mailbox name
yuuji@0 161 * Returns: our driver if name is valid, NIL otherwise
yuuji@0 162 */
yuuji@0 163
yuuji@0 164 DRIVER *tenex_valid (char *name)
yuuji@0 165 {
yuuji@0 166 char tmp[MAILTMPLEN];
yuuji@0 167 return tenex_isvalid (name,tmp) ? &tenexdriver : NIL;
yuuji@0 168 }
yuuji@0 169
yuuji@0 170
yuuji@0 171 /* Tenex mail test for valid mailbox
yuuji@0 172 * Accepts: mailbox name
yuuji@0 173 * Returns: T if valid, NIL otherwise
yuuji@0 174 */
yuuji@0 175
yuuji@0 176 int tenex_isvalid (char *name,char *tmp)
yuuji@0 177 {
yuuji@0 178 int fd;
yuuji@0 179 int ret = NIL;
yuuji@0 180 char *s,file[MAILTMPLEN];
yuuji@0 181 struct stat sbuf;
yuuji@0 182 time_t tp[2];
yuuji@0 183 errno = EINVAL; /* assume invalid argument */
yuuji@0 184 /* if file, get its status */
yuuji@0 185 if ((s = tenex_file (file,name)) && !stat (s,&sbuf)) {
yuuji@0 186 if (!sbuf.st_size) { /* allow empty file if INBOX */
yuuji@0 187 if ((s = mailboxfile (tmp,name)) && !*s) ret = T;
yuuji@0 188 else errno = 0; /* empty file */
yuuji@0 189 }
yuuji@0 190 else if ((fd = open (file,O_RDONLY,NIL)) >= 0) {
yuuji@0 191 memset (tmp,'\0',MAILTMPLEN);
yuuji@0 192 if ((read (fd,tmp,64) >= 0) && (s = strchr (tmp,'\012')) &&
yuuji@0 193 (s[-1] != '\015')) { /* valid format? */
yuuji@0 194 *s = '\0'; /* tie off header */
yuuji@0 195 /* must begin with dd-mmm-yy" */
yuuji@0 196 ret = (((tmp[2] == '-' && tmp[6] == '-') ||
yuuji@0 197 (tmp[1] == '-' && tmp[5] == '-')) &&
yuuji@0 198 (s = strchr (tmp+18,',')) && strchr (s+2,';')) ? T : NIL;
yuuji@0 199 }
yuuji@0 200 else errno = -1; /* bogus format */
yuuji@0 201 close (fd); /* close the file */
yuuji@0 202 /* \Marked status? */
yuuji@0 203 if (sbuf.st_ctime > sbuf.st_atime) {
yuuji@0 204 tp[0] = sbuf.st_atime; /* preserve atime and mtime */
yuuji@0 205 tp[1] = sbuf.st_mtime;
yuuji@0 206 utime (file,tp); /* set the times */
yuuji@0 207 }
yuuji@0 208 }
yuuji@0 209 }
yuuji@0 210 /* in case INBOX but not tenex format */
yuuji@0 211 else if ((errno == ENOENT) && !compare_cstring (name,"INBOX")) errno = -1;
yuuji@0 212 return ret; /* return what we should */
yuuji@0 213 }
yuuji@0 214
yuuji@0 215 /* Tenex manipulate driver parameters
yuuji@0 216 * Accepts: function code
yuuji@0 217 * function-dependent value
yuuji@0 218 * Returns: function-dependent return value
yuuji@0 219 */
yuuji@0 220
yuuji@0 221 void *tenex_parameters (long function,void *value)
yuuji@0 222 {
yuuji@0 223 void *ret = NIL;
yuuji@0 224 switch ((int) function) {
yuuji@0 225 case GET_INBOXPATH:
yuuji@0 226 if (value) ret = tenex_file ((char *) value,"INBOX");
yuuji@0 227 break;
yuuji@0 228 }
yuuji@0 229 return ret;
yuuji@0 230 }
yuuji@0 231
yuuji@0 232
yuuji@0 233 /* Tenex mail scan mailboxes
yuuji@0 234 * Accepts: mail stream
yuuji@0 235 * reference
yuuji@0 236 * pattern to search
yuuji@0 237 * string to scan
yuuji@0 238 */
yuuji@0 239
yuuji@0 240 void tenex_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
yuuji@0 241 {
yuuji@0 242 if (stream) dummy_scan (NIL,ref,pat,contents);
yuuji@0 243 }
yuuji@0 244
yuuji@0 245
yuuji@0 246 /* Tenex mail list mailboxes
yuuji@0 247 * Accepts: mail stream
yuuji@0 248 * reference
yuuji@0 249 * pattern to search
yuuji@0 250 */
yuuji@0 251
yuuji@0 252 void tenex_list (MAILSTREAM *stream,char *ref,char *pat)
yuuji@0 253 {
yuuji@0 254 if (stream) dummy_list (NIL,ref,pat);
yuuji@0 255 }
yuuji@0 256
yuuji@0 257
yuuji@0 258 /* Tenex mail list subscribed mailboxes
yuuji@0 259 * Accepts: mail stream
yuuji@0 260 * reference
yuuji@0 261 * pattern to search
yuuji@0 262 */
yuuji@0 263
yuuji@0 264 void tenex_lsub (MAILSTREAM *stream,char *ref,char *pat)
yuuji@0 265 {
yuuji@0 266 if (stream) dummy_lsub (NIL,ref,pat);
yuuji@0 267 }
yuuji@0 268
yuuji@0 269 /* Tenex mail delete mailbox
yuuji@0 270 * Accepts: MAIL stream
yuuji@0 271 * mailbox name to delete
yuuji@0 272 * Returns: T on success, NIL on failure
yuuji@0 273 */
yuuji@0 274
yuuji@0 275 long tenex_delete (MAILSTREAM *stream,char *mailbox)
yuuji@0 276 {
yuuji@0 277 return tenex_rename (stream,mailbox,NIL);
yuuji@0 278 }
yuuji@0 279
yuuji@0 280
yuuji@0 281 /* Tenex mail rename mailbox
yuuji@0 282 * Accepts: MAIL stream
yuuji@0 283 * old mailbox name
yuuji@0 284 * new mailbox name (or NIL for delete)
yuuji@0 285 * Returns: T on success, NIL on failure
yuuji@0 286 */
yuuji@0 287
yuuji@0 288 long tenex_rename (MAILSTREAM *stream,char *old,char *newname)
yuuji@0 289 {
yuuji@0 290 long ret = T;
yuuji@0 291 char c,*s,tmp[MAILTMPLEN],file[MAILTMPLEN],lock[MAILTMPLEN];
yuuji@0 292 int fd,ld;
yuuji@0 293 struct stat sbuf;
yuuji@0 294 if (!tenex_file (file,old) ||
yuuji@0 295 (newname && (!((s = mailboxfile (tmp,newname)) && *s) ||
yuuji@0 296 ((s = strrchr (tmp,'/')) && !s[1])))) {
yuuji@0 297 sprintf (tmp,newname ?
yuuji@0 298 "Can't rename mailbox %.80s to %.80s: invalid name" :
yuuji@0 299 "Can't delete mailbox %.80s: invalid name",
yuuji@0 300 old,newname);
yuuji@0 301 MM_LOG (tmp,ERROR);
yuuji@0 302 return NIL;
yuuji@0 303 }
yuuji@0 304 else if ((fd = open (file,O_RDWR,NIL)) < 0) {
yuuji@0 305 sprintf (tmp,"Can't open mailbox %.80s: %s",old,strerror (errno));
yuuji@0 306 MM_LOG (tmp,ERROR);
yuuji@0 307 return NIL;
yuuji@0 308 }
yuuji@0 309 /* get exclusive parse/append permission */
yuuji@0 310 if ((ld = lockfd (fd,lock,LOCK_EX)) < 0) {
yuuji@0 311 MM_LOG ("Unable to lock rename mailbox",ERROR);
yuuji@0 312 return NIL;
yuuji@0 313 }
yuuji@0 314 /* lock out other users */
yuuji@0 315 if (flock (fd,LOCK_EX|LOCK_NB)) {
yuuji@0 316 close (fd); /* couldn't lock, give up on it then */
yuuji@0 317 sprintf (tmp,"Mailbox %.80s is in use by another process",old);
yuuji@0 318 MM_LOG (tmp,ERROR);
yuuji@0 319 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 320 return NIL;
yuuji@0 321 }
yuuji@0 322
yuuji@0 323 if (newname) { /* want rename? */
yuuji@0 324 if (s = strrchr (tmp,'/')) {/* found superior to destination name? */
yuuji@0 325 c = *++s; /* remember first character of inferior */
yuuji@0 326 *s = '\0'; /* tie off to get just superior */
yuuji@0 327 /* name doesn't exist, create it */
yuuji@0 328 if ((stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
yuuji@0 329 !dummy_create_path (stream,tmp,get_dir_protection (newname)))
yuuji@0 330 ret = NIL;
yuuji@0 331 else *s = c; /* restore full name */
yuuji@0 332 }
yuuji@0 333 /* rename the file */
yuuji@0 334 if (ret && rename (file,tmp)) {
yuuji@0 335 sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",old,newname,
yuuji@0 336 strerror (errno));
yuuji@0 337 MM_LOG (tmp,ERROR);
yuuji@0 338 ret = NIL; /* set failure */
yuuji@0 339 }
yuuji@0 340 }
yuuji@0 341 else if (unlink (file)) {
yuuji@0 342 sprintf (tmp,"Can't delete mailbox %.80s: %s",old,strerror (errno));
yuuji@0 343 MM_LOG (tmp,ERROR);
yuuji@0 344 ret = NIL; /* set failure */
yuuji@0 345 }
yuuji@0 346 flock (fd,LOCK_UN); /* release lock on the file */
yuuji@0 347 close (fd); /* close the file */
yuuji@0 348 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 349 /* recreate file if renamed INBOX */
yuuji@0 350 if (ret && !compare_cstring (old,"INBOX")) dummy_create (NIL,"mail.txt");
yuuji@0 351 return ret; /* return success */
yuuji@0 352 }
yuuji@0 353
yuuji@0 354 /* Tenex Mail status
yuuji@0 355 * Accepts: mail stream
yuuji@0 356 * mailbox name
yuuji@0 357 * status flags
yuuji@0 358 * Returns: T on success, NIL on failure
yuuji@0 359 */
yuuji@0 360
yuuji@0 361 long tenex_status (MAILSTREAM *stream,char *mbx,long flags)
yuuji@0 362 {
yuuji@0 363 MAILSTATUS status;
yuuji@0 364 unsigned long i;
yuuji@0 365 MAILSTREAM *tstream = NIL;
yuuji@0 366 MAILSTREAM *systream = NIL;
yuuji@0 367 /* make temporary stream (unless this mbx) */
yuuji@0 368 if (!stream && !(stream = tstream =
yuuji@0 369 mail_open (NIL,mbx,OP_READONLY|OP_SILENT))) return NIL;
yuuji@0 370 status.flags = flags; /* return status values */
yuuji@0 371 status.messages = stream->nmsgs;
yuuji@0 372 status.recent = stream->recent;
yuuji@0 373 if (flags & SA_UNSEEN) /* must search to get unseen messages */
yuuji@0 374 for (i = 1,status.unseen = 0; i <= stream->nmsgs; i++)
yuuji@0 375 if (!mail_elt (stream,i)->seen) status.unseen++;
yuuji@0 376 status.uidnext = stream->uid_last + 1;
yuuji@0 377 status.uidvalidity = stream->uid_validity;
yuuji@0 378 /* calculate post-snarf results */
yuuji@0 379 if (!status.recent && stream->inbox &&
yuuji@0 380 (systream = mail_open (NIL,sysinbox (),OP_READONLY|OP_SILENT))) {
yuuji@0 381 status.messages += systream->nmsgs;
yuuji@0 382 status.recent += systream->recent;
yuuji@0 383 if (flags & SA_UNSEEN) /* must search to get unseen messages */
yuuji@0 384 for (i = 1; i <= systream->nmsgs; i++)
yuuji@0 385 if (!mail_elt (systream,i)->seen) status.unseen++;
yuuji@0 386 /* kludge but probably good enough */
yuuji@0 387 status.uidnext += systream->nmsgs;
yuuji@0 388 }
yuuji@0 389 MM_STATUS(stream,mbx,&status);/* pass status to main program */
yuuji@0 390 if (tstream) mail_close (tstream);
yuuji@0 391 if (systream) mail_close (systream);
yuuji@0 392 return T; /* success */
yuuji@0 393 }
yuuji@0 394
yuuji@0 395 /* Tenex mail open
yuuji@0 396 * Accepts: stream to open
yuuji@0 397 * Returns: stream on success, NIL on failure
yuuji@0 398 */
yuuji@0 399
yuuji@0 400 MAILSTREAM *tenex_open (MAILSTREAM *stream)
yuuji@0 401 {
yuuji@0 402 int fd,ld;
yuuji@0 403 char tmp[MAILTMPLEN];
yuuji@0 404 blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
yuuji@0 405 /* return prototype for OP_PROTOTYPE call */
yuuji@0 406 if (!stream) return user_flags (&tenexproto);
yuuji@0 407 if (stream->local) fatal ("tenex recycle stream");
yuuji@0 408 user_flags (stream); /* set up user flags */
yuuji@0 409 /* canonicalize the mailbox name */
yuuji@0 410 if (!tenex_file (tmp,stream->mailbox)) {
yuuji@0 411 sprintf (tmp,"Can't open - invalid name: %.80s",stream->mailbox);
yuuji@0 412 MM_LOG (tmp,ERROR);
yuuji@0 413 }
yuuji@0 414 if (stream->rdonly ||
yuuji@0 415 (fd = open (tmp,O_RDWR,NIL)) < 0) {
yuuji@0 416 if ((fd = open (tmp,O_RDONLY,NIL)) < 0) {
yuuji@0 417 sprintf (tmp,"Can't open mailbox: %s",strerror (errno));
yuuji@0 418 MM_LOG (tmp,ERROR);
yuuji@0 419 return NIL;
yuuji@0 420 }
yuuji@0 421 else if (!stream->rdonly) { /* got it, but readonly */
yuuji@0 422 MM_LOG ("Can't get write access to mailbox, access is readonly",WARN);
yuuji@0 423 stream->rdonly = T;
yuuji@0 424 }
yuuji@0 425 }
yuuji@0 426 stream->local = fs_get (sizeof (TENEXLOCAL));
yuuji@0 427 LOCAL->buf = (char *) fs_get (CHUNKSIZE);
yuuji@0 428 LOCAL->buflen = CHUNKSIZE - 1;
yuuji@0 429 LOCAL->text.data = (unsigned char *) fs_get (CHUNKSIZE);
yuuji@0 430 LOCAL->text.size = CHUNKSIZE - 1;
yuuji@0 431
yuuji@0 432 /* note if an INBOX or not */
yuuji@0 433 stream->inbox = !compare_cstring (stream->mailbox,"INBOX");
yuuji@0 434 LOCAL->fd = fd; /* bind the file */
yuuji@0 435 /* flush old name */
yuuji@0 436 fs_give ((void **) &stream->mailbox);
yuuji@0 437 /* save canonical name */
yuuji@0 438 stream->mailbox = cpystr (tmp);
yuuji@0 439 /* get shared parse permission */
yuuji@0 440 if ((ld = lockfd (fd,tmp,LOCK_SH)) < 0) {
yuuji@0 441 MM_LOG ("Unable to lock open mailbox",ERROR);
yuuji@0 442 return NIL;
yuuji@0 443 }
yuuji@0 444 (*bn) (BLOCK_FILELOCK,NIL);
yuuji@0 445 flock (LOCAL->fd,LOCK_SH); /* lock the file */
yuuji@0 446 (*bn) (BLOCK_NONE,NIL);
yuuji@0 447 unlockfd (ld,tmp); /* release shared parse permission */
yuuji@0 448 LOCAL->filesize = 0; /* initialize parsed file size */
yuuji@0 449 /* time not set up yet */
yuuji@0 450 LOCAL->lastsnarf = LOCAL->filetime = 0;
yuuji@0 451 LOCAL->mustcheck = LOCAL->shouldcheck = NIL;
yuuji@0 452 stream->sequence++; /* bump sequence number */
yuuji@0 453 /* parse mailbox */
yuuji@0 454 stream->nmsgs = stream->recent = 0;
yuuji@0 455 if (tenex_ping (stream) && !stream->nmsgs)
yuuji@0 456 MM_LOG ("Mailbox is empty",(long) NIL);
yuuji@0 457 if (!LOCAL) return NIL; /* failure if stream died */
yuuji@0 458 stream->perm_seen = stream->perm_deleted =
yuuji@0 459 stream->perm_flagged = stream->perm_answered = stream->perm_draft =
yuuji@0 460 stream->rdonly ? NIL : T;
yuuji@0 461 stream->perm_user_flags = stream->rdonly ? NIL : 0xffffffff;
yuuji@0 462 return stream; /* return stream to caller */
yuuji@0 463 }
yuuji@0 464
yuuji@0 465 /* Tenex mail close
yuuji@0 466 * Accepts: MAIL stream
yuuji@0 467 * close options
yuuji@0 468 */
yuuji@0 469
yuuji@0 470 void tenex_close (MAILSTREAM *stream,long options)
yuuji@0 471 {
yuuji@0 472 if (stream && LOCAL) { /* only if a file is open */
yuuji@0 473 int silent = stream->silent;
yuuji@0 474 stream->silent = T; /* note this stream is dying */
yuuji@0 475 if (options & CL_EXPUNGE) tenex_expunge (stream,NIL,NIL);
yuuji@0 476 stream->silent = silent; /* restore previous status */
yuuji@0 477 flock (LOCAL->fd,LOCK_UN); /* unlock local file */
yuuji@0 478 close (LOCAL->fd); /* close the local file */
yuuji@0 479 /* free local text buffer */
yuuji@0 480 if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
yuuji@0 481 if (LOCAL->text.data) fs_give ((void **) &LOCAL->text.data);
yuuji@0 482 /* nuke the local data */
yuuji@0 483 fs_give ((void **) &stream->local);
yuuji@0 484 stream->dtb = NIL; /* log out the DTB */
yuuji@0 485 }
yuuji@0 486 }
yuuji@0 487
yuuji@0 488 /* Tenex mail fetch fast data
yuuji@0 489 * Accepts: MAIL stream
yuuji@0 490 * sequence
yuuji@0 491 * option flags
yuuji@0 492 */
yuuji@0 493
yuuji@0 494 void tenex_fast (MAILSTREAM *stream,char *sequence,long flags)
yuuji@0 495 {
yuuji@0 496 STRING bs;
yuuji@0 497 MESSAGECACHE *elt;
yuuji@0 498 unsigned long i;
yuuji@0 499 if (stream && LOCAL &&
yuuji@0 500 ((flags & FT_UID) ? mail_uid_sequence (stream,sequence) :
yuuji@0 501 mail_sequence (stream,sequence)))
yuuji@0 502 for (i = 1; i <= stream->nmsgs; i++)
yuuji@0 503 if ((elt = mail_elt (stream,i))->sequence) {
yuuji@0 504 if (!elt->rfc822_size) { /* have header size yet? */
yuuji@0 505 lseek (LOCAL->fd,elt->private.special.offset +
yuuji@0 506 elt->private.special.text.size,L_SET);
yuuji@0 507 /* resize bigbuf if necessary */
yuuji@0 508 if (LOCAL->buflen < elt->private.msg.full.text.size) {
yuuji@0 509 fs_give ((void **) &LOCAL->buf);
yuuji@0 510 LOCAL->buflen = elt->private.msg.full.text.size;
yuuji@0 511 LOCAL->buf = (char *) fs_get (LOCAL->buflen + 1);
yuuji@0 512 }
yuuji@0 513 /* tie off string */
yuuji@0 514 LOCAL->buf[elt->private.msg.full.text.size] = '\0';
yuuji@0 515 /* read in the message */
yuuji@0 516 read (LOCAL->fd,LOCAL->buf,elt->private.msg.full.text.size);
yuuji@0 517 INIT (&bs,mail_string,(void *) LOCAL->buf,
yuuji@0 518 elt->private.msg.full.text.size);
yuuji@0 519 /* calculate its CRLF size */
yuuji@0 520 elt->rfc822_size = strcrlflen (&bs);
yuuji@0 521 }
yuuji@0 522 tenex_elt (stream,i); /* get current flags from file */
yuuji@0 523 }
yuuji@0 524 }
yuuji@0 525
yuuji@0 526
yuuji@0 527 /* Tenex mail fetch flags
yuuji@0 528 * Accepts: MAIL stream
yuuji@0 529 * sequence
yuuji@0 530 * option flags
yuuji@0 531 * Sniffs at file to get flags
yuuji@0 532 */
yuuji@0 533
yuuji@0 534 void tenex_flags (MAILSTREAM *stream,char *sequence,long flags)
yuuji@0 535 {
yuuji@0 536 unsigned long i;
yuuji@0 537 if (stream && LOCAL &&
yuuji@0 538 ((flags & FT_UID) ? mail_uid_sequence (stream,sequence) :
yuuji@0 539 mail_sequence (stream,sequence)))
yuuji@0 540 for (i = 1; i <= stream->nmsgs; i++)
yuuji@0 541 if (mail_elt (stream,i)->sequence) tenex_elt (stream,i);
yuuji@0 542 }
yuuji@0 543
yuuji@0 544 /* TENEX mail fetch message header
yuuji@0 545 * Accepts: MAIL stream
yuuji@0 546 * message # to fetch
yuuji@0 547 * pointer to returned header text length
yuuji@0 548 * option flags
yuuji@0 549 * Returns: message header in RFC822 format
yuuji@0 550 */
yuuji@0 551
yuuji@0 552 char *tenex_header (MAILSTREAM *stream,unsigned long msgno,
yuuji@0 553 unsigned long *length,long flags)
yuuji@0 554 {
yuuji@0 555 char *s;
yuuji@0 556 unsigned long i;
yuuji@0 557 *length = 0; /* default to empty */
yuuji@0 558 if (flags & FT_UID) return "";/* UID call "impossible" */
yuuji@0 559 /* get to header position */
yuuji@0 560 lseek (LOCAL->fd,tenex_hdrpos (stream,msgno,&i),L_SET);
yuuji@0 561 if (flags & FT_INTERNAL) {
yuuji@0 562 if (i > LOCAL->buflen) { /* resize if not enough space */
yuuji@0 563 fs_give ((void **) &LOCAL->buf);
yuuji@0 564 LOCAL->buf = (char *) fs_get (LOCAL->buflen = i + 1);
yuuji@0 565 }
yuuji@0 566 /* slurp the data */
yuuji@0 567 read (LOCAL->fd,LOCAL->buf,*length = i);
yuuji@0 568 }
yuuji@0 569 else {
yuuji@0 570 s = (char *) fs_get (i + 1);/* get readin buffer */
yuuji@0 571 s[i] = '\0'; /* tie off string */
yuuji@0 572 read (LOCAL->fd,s,i); /* slurp the data */
yuuji@0 573 /* make CRLF copy of string */
yuuji@0 574 *length = strcrlfcpy (&LOCAL->buf,&LOCAL->buflen,s,i);
yuuji@0 575 fs_give ((void **) &s); /* free readin buffer */
yuuji@0 576 }
yuuji@0 577 return (char *) LOCAL->buf;
yuuji@0 578 }
yuuji@0 579
yuuji@0 580 /* TENEX mail fetch message text (body only)
yuuji@0 581 * Accepts: MAIL stream
yuuji@0 582 * message # to fetch
yuuji@0 583 * pointer to returned stringstruct
yuuji@0 584 * option flags
yuuji@0 585 * Returns: T, always
yuuji@0 586 */
yuuji@0 587
yuuji@0 588 long tenex_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
yuuji@0 589 {
yuuji@0 590 char *s;
yuuji@0 591 unsigned long i,j;
yuuji@0 592 MESSAGECACHE *elt;
yuuji@0 593 /* UID call "impossible" */
yuuji@0 594 if (flags & FT_UID) return NIL;
yuuji@0 595 /* get message status */
yuuji@0 596 elt = tenex_elt (stream,msgno);
yuuji@0 597 /* if message not seen */
yuuji@0 598 if (!(flags & FT_PEEK) && !elt->seen) {
yuuji@0 599 elt->seen = T; /* mark message as seen */
yuuji@0 600 /* recalculate status */
yuuji@0 601 tenex_update_status (stream,msgno,T);
yuuji@0 602 MM_FLAGS (stream,msgno);
yuuji@0 603 }
yuuji@0 604 if (flags & FT_INTERNAL) { /* if internal representation wanted */
yuuji@0 605 /* find header position */
yuuji@0 606 i = tenex_hdrpos (stream,msgno,&j);
yuuji@0 607 if (i > LOCAL->buflen) { /* resize if not enough space */
yuuji@0 608 fs_give ((void **) &LOCAL->buf);
yuuji@0 609 LOCAL->buf = (char *) fs_get (LOCAL->buflen = i + 1);
yuuji@0 610 }
yuuji@0 611 /* go to text position */
yuuji@0 612 lseek (LOCAL->fd,i + j,L_SET);
yuuji@0 613 /* slurp the data */
yuuji@0 614 read (LOCAL->fd,LOCAL->buf,i);
yuuji@0 615 /* set up stringstruct for internal */
yuuji@0 616 INIT (bs,mail_string,LOCAL->buf,i);
yuuji@0 617 }
yuuji@0 618 else { /* normal form, previous text cached? */
yuuji@0 619 if (elt->private.uid == LOCAL->uid)
yuuji@0 620 i = elt->private.msg.text.text.size;
yuuji@0 621 else { /* not cached, cache it now */
yuuji@0 622 LOCAL->uid = elt->private.uid;
yuuji@0 623 /* find header position */
yuuji@0 624 i = tenex_hdrpos (stream,msgno,&j);
yuuji@0 625 /* go to text position */
yuuji@0 626 lseek (LOCAL->fd,i + j,L_SET);
yuuji@0 627 s = (char *) fs_get ((i = tenex_size (stream,msgno) - j) + 1);
yuuji@0 628 s[i] = '\0'; /* tie off string */
yuuji@0 629 read (LOCAL->fd,s,i); /* slurp the data */
yuuji@0 630 /* make CRLF copy of string */
yuuji@0 631 i = elt->private.msg.text.text.size =
yuuji@0 632 strcrlfcpy (&LOCAL->text.data,&LOCAL->text.size,s,i);
yuuji@0 633 fs_give ((void **) &s); /* free readin buffer */
yuuji@0 634 }
yuuji@0 635 /* set up stringstruct */
yuuji@0 636 INIT (bs,mail_string,LOCAL->text.data,i);
yuuji@0 637 }
yuuji@0 638 return T; /* success */
yuuji@0 639 }
yuuji@0 640
yuuji@0 641 /* Tenex mail modify flags
yuuji@0 642 * Accepts: MAIL stream
yuuji@0 643 * sequence
yuuji@0 644 * flag(s)
yuuji@0 645 * option flags
yuuji@0 646 */
yuuji@0 647
yuuji@0 648 void tenex_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
yuuji@0 649 {
yuuji@0 650 time_t tp[2];
yuuji@0 651 struct stat sbuf;
yuuji@0 652 if (!stream->rdonly) { /* make sure the update takes */
yuuji@0 653 fsync (LOCAL->fd);
yuuji@0 654 fstat (LOCAL->fd,&sbuf); /* get current write time */
yuuji@0 655 tp[1] = LOCAL->filetime = sbuf.st_mtime;
yuuji@0 656 tp[0] = time (0); /* make sure read comes after all that */
yuuji@0 657 utime (stream->mailbox,tp);
yuuji@0 658 }
yuuji@0 659 }
yuuji@0 660
yuuji@0 661
yuuji@0 662 /* Tenex mail per-message modify flags
yuuji@0 663 * Accepts: MAIL stream
yuuji@0 664 * message cache element
yuuji@0 665 */
yuuji@0 666
yuuji@0 667 void tenex_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt)
yuuji@0 668 {
yuuji@0 669 struct stat sbuf;
yuuji@0 670 /* maybe need to do a checkpoint? */
yuuji@0 671 if (LOCAL->filetime && !LOCAL->shouldcheck) {
yuuji@0 672 fstat (LOCAL->fd,&sbuf); /* get current write time */
yuuji@0 673 if (LOCAL->filetime < sbuf.st_mtime) LOCAL->shouldcheck = T;
yuuji@0 674 LOCAL->filetime = 0; /* don't do this test for any other messages */
yuuji@0 675 }
yuuji@0 676 /* recalculate status */
yuuji@0 677 tenex_update_status (stream,elt->msgno,NIL);
yuuji@0 678 }
yuuji@0 679
yuuji@0 680 /* Tenex mail ping mailbox
yuuji@0 681 * Accepts: MAIL stream
yuuji@0 682 * Returns: T if stream still alive, NIL if not
yuuji@0 683 */
yuuji@0 684
yuuji@0 685 long tenex_ping (MAILSTREAM *stream)
yuuji@0 686 {
yuuji@0 687 unsigned long i = 1;
yuuji@0 688 long r = T;
yuuji@0 689 int ld;
yuuji@0 690 char lock[MAILTMPLEN];
yuuji@0 691 struct stat sbuf;
yuuji@0 692 if (stream && LOCAL) { /* only if stream already open */
yuuji@0 693 fstat (LOCAL->fd,&sbuf); /* get current file poop */
yuuji@0 694 if (LOCAL->filetime && !(LOCAL->mustcheck || LOCAL->shouldcheck) &&
yuuji@0 695 (LOCAL->filetime < sbuf.st_mtime)) LOCAL->shouldcheck = T;
yuuji@0 696 /* check for changed message status */
yuuji@0 697 if (LOCAL->mustcheck || LOCAL->shouldcheck) {
yuuji@0 698 LOCAL->filetime = sbuf.st_mtime;
yuuji@0 699 if (LOCAL->shouldcheck) /* babble when we do this unilaterally */
yuuji@0 700 MM_NOTIFY (stream,"[CHECK] Checking for flag updates",NIL);
yuuji@0 701 while (i <= stream->nmsgs) tenex_elt (stream,i++);
yuuji@0 702 LOCAL->mustcheck = LOCAL->shouldcheck = NIL;
yuuji@0 703 }
yuuji@0 704 /* get shared parse/append permission */
yuuji@0 705 if ((sbuf.st_size != LOCAL->filesize) &&
yuuji@0 706 ((ld = lockfd (LOCAL->fd,lock,LOCK_SH)) >= 0)) {
yuuji@0 707 /* parse resulting mailbox */
yuuji@0 708 r = (tenex_parse (stream)) ? T : NIL;
yuuji@0 709 unlockfd (ld,lock); /* release shared parse/append permission */
yuuji@0 710 }
yuuji@0 711 if (LOCAL) { /* stream must still be alive */
yuuji@0 712 /* snarf if this is a read-write inbox */
yuuji@0 713 if (stream->inbox && !stream->rdonly) {
yuuji@0 714 tenex_snarf (stream);
yuuji@0 715 fstat (LOCAL->fd,&sbuf);/* see if file changed now */
yuuji@0 716 if ((sbuf.st_size != LOCAL->filesize) &&
yuuji@0 717 ((ld = lockfd (LOCAL->fd,lock,LOCK_SH)) >= 0)) {
yuuji@0 718 /* parse resulting mailbox */
yuuji@0 719 r = (tenex_parse (stream)) ? T : NIL;
yuuji@0 720 unlockfd (ld,lock); /* release shared parse/append permission */
yuuji@0 721 }
yuuji@0 722 }
yuuji@0 723 }
yuuji@0 724 }
yuuji@0 725 return r; /* return result of the parse */
yuuji@0 726 }
yuuji@0 727
yuuji@0 728
yuuji@0 729 /* Tenex mail check mailbox (reparses status too)
yuuji@0 730 * Accepts: MAIL stream
yuuji@0 731 */
yuuji@0 732
yuuji@0 733 void tenex_check (MAILSTREAM *stream)
yuuji@0 734 {
yuuji@0 735 /* mark that a check is desired */
yuuji@0 736 if (LOCAL) LOCAL->mustcheck = T;
yuuji@0 737 if (tenex_ping (stream)) MM_LOG ("Check completed",(long) NIL);
yuuji@0 738 }
yuuji@0 739
yuuji@0 740 /* Tenex mail snarf messages from system inbox
yuuji@0 741 * Accepts: MAIL stream
yuuji@0 742 */
yuuji@0 743
yuuji@0 744 void tenex_snarf (MAILSTREAM *stream)
yuuji@0 745 {
yuuji@0 746 unsigned long i = 0;
yuuji@0 747 unsigned long j,r,hdrlen,txtlen;
yuuji@0 748 struct stat sbuf;
yuuji@0 749 char *hdr,*txt,lock[MAILTMPLEN],tmp[MAILTMPLEN];
yuuji@0 750 MESSAGECACHE *elt;
yuuji@0 751 MAILSTREAM *sysibx = NIL;
yuuji@0 752 int ld;
yuuji@0 753 /* give up if can't get exclusive permission */
yuuji@0 754 if ((time (0) >= (LOCAL->lastsnarf +
yuuji@0 755 (long) mail_parameters (NIL,GET_SNARFINTERVAL,NIL))) &&
yuuji@0 756 strcmp (sysinbox (),stream->mailbox) &&
yuuji@0 757 ((ld = lockfd (LOCAL->fd,lock,LOCK_EX)) >= 0)) {
yuuji@0 758 MM_CRITICAL (stream); /* go critical */
yuuji@0 759 /* sizes match and anything in sysinbox? */
yuuji@0 760 if (!stat (sysinbox (),&sbuf) && sbuf.st_size &&
yuuji@0 761 !fstat (LOCAL->fd,&sbuf) && (sbuf.st_size == LOCAL->filesize) &&
yuuji@0 762 (sysibx = mail_open (sysibx,sysinbox (),OP_SILENT)) &&
yuuji@0 763 (!sysibx->rdonly) && (r = sysibx->nmsgs)) {
yuuji@0 764 /* yes, go to end of file in our mailbox */
yuuji@0 765 lseek (LOCAL->fd,sbuf.st_size,L_SET);
yuuji@0 766 /* for each message in sysibx mailbox */
yuuji@0 767 while (r && (++i <= sysibx->nmsgs)) {
yuuji@0 768 /* snarf message from system INBOX */
yuuji@0 769 hdr = cpystr (mail_fetchheader_full(sysibx,i,NIL,&hdrlen,FT_INTERNAL));
yuuji@0 770 txt = mail_fetchtext_full (sysibx,i,&txtlen,FT_INTERNAL|FT_PEEK);
yuuji@0 771 /* if have a message */
yuuji@0 772 if (j = hdrlen + txtlen) {
yuuji@0 773 /* calculate header line */
yuuji@0 774 mail_date (LOCAL->buf,elt = mail_elt (sysibx,i));
yuuji@0 775 sprintf (LOCAL->buf + strlen (LOCAL->buf),
yuuji@0 776 ",%lu;0000000000%02o\n",j,(unsigned)
yuuji@0 777 ((fSEEN * elt->seen) + (fDELETED * elt->deleted) +
yuuji@0 778 (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
yuuji@0 779 (fDRAFT * elt->draft)));
yuuji@0 780 /* copy message */
yuuji@0 781 if ((write (LOCAL->fd,LOCAL->buf,strlen (LOCAL->buf)) < 0) ||
yuuji@0 782 (write (LOCAL->fd,hdr,hdrlen) < 0) ||
yuuji@0 783 (write (LOCAL->fd,txt,txtlen) < 0)) r = 0;
yuuji@0 784 }
yuuji@0 785 fs_give ((void **) &hdr);
yuuji@0 786 }
yuuji@0 787
yuuji@0 788 /* make sure all the updates take */
yuuji@0 789 if (fsync (LOCAL->fd)) r = 0;
yuuji@0 790 if (r) { /* delete all the messages we copied */
yuuji@0 791 if (r == 1) strcpy (tmp,"1");
yuuji@0 792 else sprintf (tmp,"1:%lu",r);
yuuji@0 793 mail_flag (sysibx,tmp,"\\Deleted",ST_SET);
yuuji@0 794 mail_expunge (sysibx); /* now expunge all those messages */
yuuji@0 795 }
yuuji@0 796 else {
yuuji@0 797 sprintf (LOCAL->buf,"Can't copy new mail: %s",strerror (errno));
yuuji@0 798 MM_LOG (LOCAL->buf,WARN);
yuuji@0 799 ftruncate (LOCAL->fd,sbuf.st_size);
yuuji@0 800 }
yuuji@0 801 fstat (LOCAL->fd,&sbuf); /* yes, get current file size */
yuuji@0 802 LOCAL->filetime = sbuf.st_mtime;
yuuji@0 803 }
yuuji@0 804 if (sysibx) mail_close (sysibx);
yuuji@0 805 MM_NOCRITICAL (stream); /* release critical */
yuuji@0 806 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 807 LOCAL->lastsnarf = time (0);/* note time of last snarf */
yuuji@0 808 }
yuuji@0 809 }
yuuji@0 810
yuuji@0 811 /* Tenex mail expunge mailbox
yuuji@0 812 * Accepts: MAIL stream
yuuji@0 813 * sequence to expunge if non-NIL
yuuji@0 814 * expunge options
yuuji@0 815 * Returns: T, always
yuuji@0 816 */
yuuji@0 817
yuuji@0 818 long tenex_expunge (MAILSTREAM *stream,char *sequence,long options)
yuuji@0 819 {
yuuji@0 820 long ret;
yuuji@0 821 time_t tp[2];
yuuji@0 822 struct stat sbuf;
yuuji@0 823 off_t pos = 0;
yuuji@0 824 int ld;
yuuji@0 825 unsigned long i = 1;
yuuji@0 826 unsigned long j,k,m,recent;
yuuji@0 827 unsigned long n = 0;
yuuji@0 828 unsigned long delta = 0;
yuuji@0 829 char lock[MAILTMPLEN];
yuuji@0 830 MESSAGECACHE *elt;
yuuji@0 831 blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
yuuji@0 832 if (!(ret = (sequence ? ((options & EX_UID) ?
yuuji@0 833 mail_uid_sequence (stream,sequence) :
yuuji@0 834 mail_sequence (stream,sequence)) : LONGT) &&
yuuji@0 835 tenex_ping (stream))); /* parse sequence if given, ping stream */
yuuji@0 836 else if (stream->rdonly) MM_LOG ("Expunge ignored on readonly mailbox",WARN);
yuuji@0 837 else {
yuuji@0 838 if (LOCAL->filetime && !LOCAL->shouldcheck) {
yuuji@0 839 fstat (LOCAL->fd,&sbuf); /* get current write time */
yuuji@0 840 if (LOCAL->filetime < sbuf.st_mtime) LOCAL->shouldcheck = T;
yuuji@0 841 }
yuuji@0 842 /* The cretins who designed flock() created a window of vulnerability in
yuuji@0 843 * upgrading locks from shared to exclusive or downgrading from exclusive
yuuji@0 844 * to shared. Rather than maintain the lock at shared status at a minimum,
yuuji@0 845 * flock() actually *releases* the former lock. Obviously they never talked
yuuji@0 846 * to any database guys. Fortunately, we have the parse/append permission
yuuji@0 847 * lock. If we require this lock before going exclusive on the mailbox,
yuuji@0 848 * another process can not sneak in and steal the exclusive mailbox lock on
yuuji@0 849 * us, because it will block on trying to get parse/append permission first.
yuuji@0 850 */
yuuji@0 851 /* get exclusive parse/append permission */
yuuji@0 852 if ((ld = lockfd (LOCAL->fd,lock,LOCK_EX)) < 0)
yuuji@0 853 MM_LOG ("Unable to lock expunge mailbox",ERROR);
yuuji@0 854 /* make sure see any newly-arrived messages */
yuuji@0 855 else if (!tenex_parse (stream));
yuuji@0 856 /* get exclusive access */
yuuji@0 857 else if (flock (LOCAL->fd,LOCK_EX|LOCK_NB)) {
yuuji@0 858 (*bn) (BLOCK_FILELOCK,NIL);
yuuji@0 859 flock (LOCAL->fd,LOCK_SH);/* recover previous lock */
yuuji@0 860 (*bn) (BLOCK_NONE,NIL);
yuuji@0 861 MM_LOG ("Can't expunge because mailbox is in use by another process",
yuuji@0 862 ERROR);
yuuji@0 863 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 864 }
yuuji@0 865
yuuji@0 866 else {
yuuji@0 867 MM_CRITICAL (stream); /* go critical */
yuuji@0 868 recent = stream->recent; /* get recent now that pinged and locked */
yuuji@0 869 /* for each message */
yuuji@0 870 while (i <= stream->nmsgs) {
yuuji@0 871 /* get cache element */
yuuji@0 872 elt = tenex_elt (stream,i);
yuuji@0 873 /* number of bytes to smash or preserve */
yuuji@0 874 k = elt->private.special.text.size + tenex_size (stream,i);
yuuji@0 875 /* if need to expunge this message */
yuuji@0 876 if (elt->deleted && (sequence ? elt->sequence : T)) {
yuuji@0 877 /* if recent, note one less recent message */
yuuji@0 878 if (elt->recent) --recent;
yuuji@0 879 delta += k; /* number of bytes to delete */
yuuji@0 880 /* notify upper levels */
yuuji@0 881 mail_expunged (stream,i);
yuuji@0 882 n++; /* count up one more expunged message */
yuuji@0 883 }
yuuji@0 884 else if (i++ && delta) {/* preserved message */
yuuji@0 885 /* first byte to preserve */
yuuji@0 886 j = elt->private.special.offset;
yuuji@0 887 do { /* read from source position */
yuuji@0 888 m = min (k,LOCAL->buflen);
yuuji@0 889 lseek (LOCAL->fd,j,L_SET);
yuuji@0 890 read (LOCAL->fd,LOCAL->buf,m);
yuuji@0 891 pos = j - delta; /* write to destination position */
yuuji@0 892 lseek (LOCAL->fd,pos,L_SET);
yuuji@0 893 while (T) {
yuuji@0 894 lseek (LOCAL->fd,pos,L_SET);
yuuji@0 895 if (write (LOCAL->fd,LOCAL->buf,m) > 0) break;
yuuji@0 896 MM_NOTIFY (stream,strerror (errno),WARN);
yuuji@0 897 MM_DISKERROR (stream,errno,T);
yuuji@0 898 }
yuuji@0 899 pos += m; /* new position */
yuuji@0 900 j += m; /* next chunk, perhaps */
yuuji@0 901 } while (k -= m); /* until done */
yuuji@0 902 /* note the new address of this text */
yuuji@0 903 elt->private.special.offset -= delta;
yuuji@0 904 }
yuuji@0 905 /* preserved but no deleted messages */
yuuji@0 906 else pos = elt->private.special.offset + k;
yuuji@0 907 }
yuuji@0 908
yuuji@0 909 if (n) { /* truncate file after last message */
yuuji@0 910 if (pos != (LOCAL->filesize -= delta)) {
yuuji@0 911 sprintf (LOCAL->buf,
yuuji@0 912 "Calculated size mismatch %lu != %lu, delta = %lu",
yuuji@0 913 (unsigned long) pos,(unsigned long) LOCAL->filesize,delta);
yuuji@0 914 MM_LOG (LOCAL->buf,WARN);
yuuji@0 915 LOCAL->filesize = pos;/* fix it then */
yuuji@0 916 }
yuuji@0 917 ftruncate (LOCAL->fd,LOCAL->filesize);
yuuji@0 918 sprintf (LOCAL->buf,"Expunged %lu messages",n);
yuuji@0 919 /* output the news */
yuuji@0 920 MM_LOG (LOCAL->buf,(long) NIL);
yuuji@0 921 }
yuuji@0 922 else MM_LOG ("No messages deleted, so no update needed",(long) NIL);
yuuji@0 923 fsync (LOCAL->fd); /* force disk update */
yuuji@0 924 fstat (LOCAL->fd,&sbuf); /* get new write time */
yuuji@0 925 tp[1] = LOCAL->filetime = sbuf.st_mtime;
yuuji@0 926 tp[0] = time (0); /* reset atime to now */
yuuji@0 927 utime (stream->mailbox,tp);
yuuji@0 928 MM_NOCRITICAL (stream); /* release critical */
yuuji@0 929 /* notify upper level of new mailbox size */
yuuji@0 930 mail_exists (stream,stream->nmsgs);
yuuji@0 931 mail_recent (stream,recent);
yuuji@0 932 (*bn) (BLOCK_FILELOCK,NIL);
yuuji@0 933 flock (LOCAL->fd,LOCK_SH);/* allow sharers again */
yuuji@0 934 (*bn) (BLOCK_NONE,NIL);
yuuji@0 935 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 936 }
yuuji@0 937 }
yuuji@0 938 return LONGT;
yuuji@0 939 }
yuuji@0 940
yuuji@0 941 /* Tenex mail copy message(s)
yuuji@0 942 * Accepts: MAIL stream
yuuji@0 943 * sequence
yuuji@0 944 * destination mailbox
yuuji@0 945 * copy options
yuuji@0 946 * Returns: T if success, NIL if failed
yuuji@0 947 */
yuuji@0 948
yuuji@0 949 long tenex_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
yuuji@0 950 {
yuuji@0 951 struct stat sbuf;
yuuji@0 952 time_t tp[2];
yuuji@0 953 MESSAGECACHE *elt;
yuuji@0 954 unsigned long i,j,k;
yuuji@0 955 long ret = LONGT;
yuuji@0 956 int fd,ld;
yuuji@0 957 char file[MAILTMPLEN],lock[MAILTMPLEN];
yuuji@0 958 mailproxycopy_t pc =
yuuji@0 959 (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
yuuji@0 960 /* make sure valid mailbox */
yuuji@0 961 if (!tenex_isvalid (mailbox,LOCAL->buf)) switch (errno) {
yuuji@0 962 case ENOENT: /* no such file? */
yuuji@0 963 MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before copy",NIL);
yuuji@0 964 return NIL;
yuuji@0 965 case 0: /* merely empty file? */
yuuji@0 966 break;
yuuji@0 967 case EACCES: /* file protected */
yuuji@0 968 sprintf (LOCAL->buf,"Can't access destination: %.80s",mailbox);
yuuji@0 969 MM_LOG (LOCAL->buf,ERROR);
yuuji@0 970 return NIL;
yuuji@0 971 case EINVAL:
yuuji@0 972 if (pc) return (*pc) (stream,sequence,mailbox,options);
yuuji@0 973 sprintf (LOCAL->buf,"Invalid Tenex-format mailbox name: %.80s",mailbox);
yuuji@0 974 MM_LOG (LOCAL->buf,ERROR);
yuuji@0 975 return NIL;
yuuji@0 976 default:
yuuji@0 977 if (pc) return (*pc) (stream,sequence,mailbox,options);
yuuji@0 978 sprintf (LOCAL->buf,"Not a Tenex-format mailbox: %.80s",mailbox);
yuuji@0 979 MM_LOG (LOCAL->buf,ERROR);
yuuji@0 980 return NIL;
yuuji@0 981 }
yuuji@0 982 if (!((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
yuuji@0 983 mail_sequence (stream,sequence))) return NIL;
yuuji@0 984 /* got file? */
yuuji@0 985 if ((fd = open (tenex_file(file,mailbox),O_RDWR,NIL)) < 0) {
yuuji@0 986 sprintf (LOCAL->buf,"Unable to open copy mailbox: %s",strerror (errno));
yuuji@0 987 MM_LOG (LOCAL->buf,ERROR);
yuuji@0 988 return NIL;
yuuji@0 989 }
yuuji@0 990 MM_CRITICAL (stream); /* go critical */
yuuji@0 991 /* get exclusive parse/append permission */
yuuji@0 992 if (flock (fd,LOCK_SH) || ((ld = lockfd (fd,lock,LOCK_EX)) < 0)) {
yuuji@0 993 MM_LOG ("Unable to lock copy mailbox",ERROR);
yuuji@0 994 MM_NOCRITICAL (stream);
yuuji@0 995 return NIL;
yuuji@0 996 }
yuuji@0 997 fstat (fd,&sbuf); /* get current file size */
yuuji@0 998 lseek (fd,sbuf.st_size,L_SET);/* move to end of file */
yuuji@0 999
yuuji@0 1000 /* for each requested message */
yuuji@0 1001 for (i = 1; ret && (i <= stream->nmsgs); i++)
yuuji@0 1002 if ((elt = mail_elt (stream,i))->sequence) {
yuuji@0 1003 lseek (LOCAL->fd,elt->private.special.offset,L_SET);
yuuji@0 1004 /* number of bytes to copy */
yuuji@0 1005 k = elt->private.special.text.size + tenex_size (stream,i);
yuuji@0 1006 do { /* read from source position */
yuuji@0 1007 j = min (k,LOCAL->buflen);
yuuji@0 1008 read (LOCAL->fd,LOCAL->buf,j);
yuuji@0 1009 if (write (fd,LOCAL->buf,j) < 0) ret = NIL;
yuuji@0 1010 } while (ret && (k -= j));/* until done */
yuuji@0 1011 }
yuuji@0 1012 /* make sure all the updates take */
yuuji@0 1013 if (!(ret && (ret = !fsync (fd)))) {
yuuji@0 1014 sprintf (LOCAL->buf,"Unable to write message: %s",strerror (errno));
yuuji@0 1015 MM_LOG (LOCAL->buf,ERROR);
yuuji@0 1016 ftruncate (fd,sbuf.st_size);
yuuji@0 1017 }
yuuji@0 1018 if (ret) tp[0] = time (0) - 1;/* set atime to now-1 if successful copy */
yuuji@0 1019 /* else preserve \Marked status */
yuuji@0 1020 else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
yuuji@0 1021 tp[1] = sbuf.st_mtime; /* preserve mtime */
yuuji@0 1022 utime (file,tp); /* set the times */
yuuji@0 1023 close (fd); /* close the file */
yuuji@0 1024 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 1025 MM_NOCRITICAL (stream); /* release critical */
yuuji@0 1026 /* delete all requested messages */
yuuji@0 1027 if (ret && (options & CP_MOVE)) {
yuuji@0 1028 for (i = 1; i <= stream->nmsgs; i++)
yuuji@0 1029 if ((elt = tenex_elt (stream,i))->sequence) {
yuuji@0 1030 elt->deleted = T; /* mark message deleted */
yuuji@0 1031 /* recalculate status */
yuuji@0 1032 tenex_update_status (stream,i,NIL);
yuuji@0 1033 }
yuuji@0 1034 if (!stream->rdonly) { /* make sure the update takes */
yuuji@0 1035 fsync (LOCAL->fd);
yuuji@0 1036 fstat (LOCAL->fd,&sbuf); /* get current write time */
yuuji@0 1037 tp[1] = LOCAL->filetime = sbuf.st_mtime;
yuuji@0 1038 tp[0] = time (0); /* make sure atime remains greater */
yuuji@0 1039 utime (stream->mailbox,tp);
yuuji@0 1040 }
yuuji@0 1041 }
yuuji@0 1042 if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
yuuji@0 1043 MM_LOG ("Can not return meaningful COPYUID with this mailbox format",WARN);
yuuji@0 1044 return ret;
yuuji@0 1045 }
yuuji@0 1046
yuuji@0 1047 /* Tenex mail append message from stringstruct
yuuji@0 1048 * Accepts: MAIL stream
yuuji@0 1049 * destination mailbox
yuuji@0 1050 * append callback
yuuji@0 1051 * data for callback
yuuji@0 1052 * Returns: T if append successful, else NIL
yuuji@0 1053 */
yuuji@0 1054
yuuji@0 1055 long tenex_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
yuuji@0 1056 {
yuuji@0 1057 struct stat sbuf;
yuuji@0 1058 int fd,ld,c;
yuuji@0 1059 char *flags,*date,tmp[MAILTMPLEN],file[MAILTMPLEN],lock[MAILTMPLEN];
yuuji@0 1060 time_t tp[2];
yuuji@0 1061 FILE *df;
yuuji@0 1062 MESSAGECACHE elt;
yuuji@0 1063 long f;
yuuji@0 1064 unsigned long i,j,uf,size;
yuuji@0 1065 STRING *message;
yuuji@0 1066 long ret = LONGT;
yuuji@0 1067 /* default stream to prototype */
yuuji@0 1068 if (!stream) stream = user_flags (&tenexproto);
yuuji@0 1069 /* make sure valid mailbox */
yuuji@0 1070 if (!tenex_isvalid (mailbox,tmp)) switch (errno) {
yuuji@0 1071 case ENOENT: /* no such file? */
yuuji@0 1072 if (!compare_cstring (mailbox,"INBOX")) dummy_create (NIL,"mail.txt");
yuuji@0 1073 else {
yuuji@0 1074 MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before append",NIL);
yuuji@0 1075 return NIL;
yuuji@0 1076 }
yuuji@0 1077 /* falls through */
yuuji@0 1078 case 0: /* merely empty file? */
yuuji@0 1079 break;
yuuji@0 1080 case EACCES: /* file protected */
yuuji@0 1081 sprintf (tmp,"Can't access destination: %.80s",mailbox);
yuuji@0 1082 MM_LOG (tmp,ERROR);
yuuji@0 1083 return NIL;
yuuji@0 1084 case EINVAL:
yuuji@0 1085 sprintf (tmp,"Invalid TENEX-format mailbox name: %.80s",mailbox);
yuuji@0 1086 MM_LOG (tmp,ERROR);
yuuji@0 1087 return NIL;
yuuji@0 1088 default:
yuuji@0 1089 sprintf (tmp,"Not a TENEX-format mailbox: %.80s",mailbox);
yuuji@0 1090 MM_LOG (tmp,ERROR);
yuuji@0 1091 return NIL;
yuuji@0 1092 }
yuuji@0 1093 /* get first message */
yuuji@0 1094 if (!MM_APPEND (af) (stream,data,&flags,&date,&message)) return NIL;
yuuji@0 1095
yuuji@0 1096 /* open destination mailbox */
yuuji@0 1097 if (((fd = open (tenex_file (file,mailbox),O_WRONLY|O_APPEND,NIL)) < 0) ||
yuuji@0 1098 !(df = fdopen (fd,"ab"))) {
yuuji@0 1099 sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
yuuji@0 1100 MM_LOG (tmp,ERROR);
yuuji@0 1101 return NIL;
yuuji@0 1102 }
yuuji@0 1103 /* get parse/append permission */
yuuji@0 1104 if (flock (fd,LOCK_SH) || ((ld = lockfd (fd,lock,LOCK_EX)) < 0)) {
yuuji@0 1105 MM_LOG ("Unable to lock append mailbox",ERROR);
yuuji@0 1106 close (fd);
yuuji@0 1107 return NIL;
yuuji@0 1108 }
yuuji@0 1109 MM_CRITICAL (stream); /* go critical */
yuuji@0 1110 fstat (fd,&sbuf); /* get current file size */
yuuji@0 1111 errno = 0;
yuuji@0 1112 do { /* parse flags */
yuuji@0 1113 if (!SIZE (message)) { /* guard against zero-length */
yuuji@0 1114 MM_LOG ("Append of zero-length message",ERROR);
yuuji@0 1115 ret = NIL;
yuuji@0 1116 break;
yuuji@0 1117 }
yuuji@0 1118 f = mail_parse_flags (stream,flags,&i);
yuuji@0 1119 /* reverse bits (dontcha wish we had CIRC?) */
yuuji@0 1120 for (uf = 0; i; uf |= 1 << (29 - find_rightmost_bit (&i)));
yuuji@0 1121 if (date) { /* parse date if given */
yuuji@0 1122 if (!mail_parse_date (&elt,date)) {
yuuji@0 1123 sprintf (tmp,"Bad date in append: %.80s",date);
yuuji@0 1124 MM_LOG (tmp,ERROR);
yuuji@0 1125 ret = NIL; /* mark failure */
yuuji@0 1126 break;
yuuji@0 1127 }
yuuji@0 1128 mail_date (tmp,&elt); /* write preseved date */
yuuji@0 1129 }
yuuji@0 1130 else internal_date (tmp); /* get current date in IMAP format */
yuuji@0 1131 i = GETPOS (message); /* remember current position */
yuuji@0 1132 for (j = SIZE (message), size = 0; j; --j)
yuuji@0 1133 if (SNX (message) != '\015') ++size;
yuuji@0 1134 SETPOS (message,i); /* restore position */
yuuji@0 1135 /* write header */
yuuji@0 1136 if (fprintf (df,"%s,%lu;%010lo%02lo\n",tmp,size,uf,(unsigned long) f) < 0)
yuuji@0 1137 ret = NIL;
yuuji@0 1138 else { /* write message */
yuuji@0 1139 while (size) if ((c = 0xff & SNX (message)) != '\015') {
yuuji@0 1140 if (putc (c,df) != EOF) --size;
yuuji@0 1141 else break;
yuuji@0 1142 }
yuuji@0 1143 /* get next message */
yuuji@0 1144 if (size || !MM_APPEND (af) (stream,data,&flags,&date,&message))
yuuji@0 1145 ret = NIL;
yuuji@0 1146 }
yuuji@0 1147 } while (ret && message);
yuuji@0 1148 /* if error... */
yuuji@0 1149 if (!ret || (fflush (df) == EOF)) {
yuuji@0 1150 ftruncate (fd,sbuf.st_size);/* revert file */
yuuji@0 1151 close (fd); /* make sure fclose() doesn't corrupt us */
yuuji@0 1152 if (errno) {
yuuji@0 1153 sprintf (tmp,"Message append failed: %s",strerror (errno));
yuuji@0 1154 MM_LOG (tmp,ERROR);
yuuji@0 1155 }
yuuji@0 1156 ret = NIL;
yuuji@0 1157 }
yuuji@0 1158 if (ret) tp[0] = time (0) - 1;/* set atime to now-1 if successful copy */
yuuji@0 1159 /* else preserve \Marked status */
yuuji@0 1160 else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
yuuji@0 1161 tp[1] = sbuf.st_mtime; /* preserve mtime */
yuuji@0 1162 utime (file,tp); /* set the times */
yuuji@0 1163 fclose (df); /* close the file */
yuuji@0 1164 unlockfd (ld,lock); /* release exclusive parse/append permission */
yuuji@0 1165 MM_NOCRITICAL (stream); /* release critical */
yuuji@0 1166 if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
yuuji@0 1167 MM_LOG ("Can not return meaningful APPENDUID with this mailbox format",
yuuji@0 1168 WARN);
yuuji@0 1169 return ret;
yuuji@0 1170 }
yuuji@0 1171
yuuji@0 1172 /* Internal routines */
yuuji@0 1173
yuuji@0 1174
yuuji@0 1175 /* Tenex mail return internal message size in bytes
yuuji@0 1176 * Accepts: MAIL stream
yuuji@0 1177 * message #
yuuji@0 1178 * Returns: internal size of message
yuuji@0 1179 */
yuuji@0 1180
yuuji@0 1181 unsigned long tenex_size (MAILSTREAM *stream,unsigned long m)
yuuji@0 1182 {
yuuji@0 1183 MESSAGECACHE *elt = mail_elt (stream,m);
yuuji@0 1184 return ((m < stream->nmsgs) ? mail_elt (stream,m+1)->private.special.offset :
yuuji@0 1185 LOCAL->filesize) -
yuuji@0 1186 (elt->private.special.offset + elt->private.special.text.size);
yuuji@0 1187 }
yuuji@0 1188
yuuji@0 1189
yuuji@0 1190 /* Tenex mail generate file string
yuuji@0 1191 * Accepts: temporary buffer to write into
yuuji@0 1192 * mailbox name string
yuuji@0 1193 * Returns: local file string or NIL if failure
yuuji@0 1194 */
yuuji@0 1195
yuuji@0 1196 char *tenex_file (char *dst,char *name)
yuuji@0 1197 {
yuuji@0 1198 char tmp[MAILTMPLEN];
yuuji@0 1199 char *s = mailboxfile (dst,name);
yuuji@0 1200 /* return our standard inbox */
yuuji@0 1201 return (s && !*s) ? mailboxfile (dst,tenex_isvalid ("~/INBOX",tmp) ?
yuuji@0 1202 "~/INBOX" : "mail.txt") : s;
yuuji@0 1203 }
yuuji@0 1204
yuuji@0 1205 /* Tenex mail parse mailbox
yuuji@0 1206 * Accepts: MAIL stream
yuuji@0 1207 * Returns: T if parse OK
yuuji@0 1208 * NIL if failure, stream aborted
yuuji@0 1209 */
yuuji@0 1210
yuuji@0 1211 long tenex_parse (MAILSTREAM *stream)
yuuji@0 1212 {
yuuji@0 1213 struct stat sbuf;
yuuji@0 1214 MESSAGECACHE *elt = NIL;
yuuji@0 1215 unsigned char c,*s,*t,*x;
yuuji@0 1216 char tmp[MAILTMPLEN];
yuuji@0 1217 unsigned long i,j;
yuuji@0 1218 long curpos = LOCAL->filesize;
yuuji@0 1219 long nmsgs = stream->nmsgs;
yuuji@0 1220 long recent = stream->recent;
yuuji@0 1221 short added = NIL;
yuuji@0 1222 short silent = stream->silent;
yuuji@0 1223 fstat (LOCAL->fd,&sbuf); /* get status */
yuuji@0 1224 if (sbuf.st_size < curpos) { /* sanity check */
yuuji@0 1225 sprintf (tmp,"Mailbox shrank from %lu to %lu!",
yuuji@0 1226 (unsigned long) curpos,(unsigned long) sbuf.st_size);
yuuji@0 1227 MM_LOG (tmp,ERROR);
yuuji@0 1228 tenex_close (stream,NIL);
yuuji@0 1229 return NIL;
yuuji@0 1230 }
yuuji@0 1231 stream->silent = T; /* don't pass up exists events yet */
yuuji@0 1232 while (sbuf.st_size - curpos){/* while there is stuff to parse */
yuuji@0 1233 /* get to that position in the file */
yuuji@0 1234 lseek (LOCAL->fd,curpos,L_SET);
yuuji@0 1235 if ((i = read (LOCAL->fd,LOCAL->buf,64)) <= 0) {
yuuji@0 1236 sprintf (tmp,"Unable to read internal header at %lu, size = %lu: %s",
yuuji@0 1237 (unsigned long) curpos,(unsigned long) sbuf.st_size,
yuuji@0 1238 i ? strerror (errno) : "no data read");
yuuji@0 1239 MM_LOG (tmp,ERROR);
yuuji@0 1240 tenex_close (stream,NIL);
yuuji@0 1241 return NIL;
yuuji@0 1242 }
yuuji@0 1243 LOCAL->buf[i] = '\0'; /* tie off buffer just in case */
yuuji@0 1244 if (!(s = strchr (LOCAL->buf,'\012'))) {
yuuji@0 1245 sprintf (tmp,"Unable to find newline at %lu in %lu bytes, text: %s",
yuuji@0 1246 (unsigned long) curpos,i,(char *) LOCAL->buf);
yuuji@0 1247 MM_LOG (tmp,ERROR);
yuuji@0 1248 tenex_close (stream,NIL);
yuuji@0 1249 return NIL;
yuuji@0 1250 }
yuuji@0 1251 *s = '\0'; /* tie off header line */
yuuji@0 1252 i = (s + 1) - LOCAL->buf; /* note start of text offset */
yuuji@0 1253 if (!((s = strchr (LOCAL->buf,',')) && (t = strchr (s+1,';')))) {
yuuji@0 1254 sprintf (tmp,"Unable to parse internal header at %lu: %s",
yuuji@0 1255 (unsigned long) curpos,(char *) LOCAL->buf);
yuuji@0 1256 MM_LOG (tmp,ERROR);
yuuji@0 1257 tenex_close (stream,NIL);
yuuji@0 1258 return NIL;
yuuji@0 1259 }
yuuji@0 1260 *s++ = '\0'; *t++ = '\0'; /* tie off fields */
yuuji@0 1261
yuuji@0 1262 added = T; /* note that a new message was added */
yuuji@0 1263 /* swell the cache */
yuuji@0 1264 mail_exists (stream,++nmsgs);
yuuji@0 1265 /* instantiate an elt for this message */
yuuji@0 1266 (elt = mail_elt (stream,nmsgs))->valid = T;
yuuji@0 1267 elt->private.uid = ++stream->uid_last;
yuuji@0 1268 /* note file offset of header */
yuuji@0 1269 elt->private.special.offset = curpos;
yuuji@0 1270 /* in case error */
yuuji@0 1271 elt->private.special.text.size = 0;
yuuji@0 1272 /* header size not known yet */
yuuji@0 1273 elt->private.msg.header.text.size = 0;
yuuji@0 1274 x = s; /* parse the header components */
yuuji@0 1275 if (mail_parse_date (elt,LOCAL->buf) &&
yuuji@0 1276 (elt->private.msg.full.text.size = strtoul (s,(char **) &s,10)) &&
yuuji@0 1277 (!(s && *s)) && isdigit (t[0]) && isdigit (t[1]) && isdigit (t[2]) &&
yuuji@0 1278 isdigit (t[3]) && isdigit (t[4]) && isdigit (t[5]) &&
yuuji@0 1279 isdigit (t[6]) && isdigit (t[7]) && isdigit (t[8]) &&
yuuji@0 1280 isdigit (t[9]) && isdigit (t[10]) && isdigit (t[11]) && !t[12])
yuuji@0 1281 elt->private.special.text.size = i;
yuuji@0 1282 else { /* oops */
yuuji@0 1283 sprintf (tmp,"Unable to parse internal header elements at %ld: %s,%s;%s",
yuuji@0 1284 curpos,(char *) LOCAL->buf,(char *) x,(char *) t);
yuuji@0 1285 MM_LOG (tmp,ERROR);
yuuji@0 1286 tenex_close (stream,NIL);
yuuji@0 1287 return NIL;
yuuji@0 1288 }
yuuji@0 1289 /* make sure didn't run off end of file */
yuuji@0 1290 if ((curpos += (elt->private.msg.full.text.size + i)) > sbuf.st_size) {
yuuji@0 1291 sprintf (tmp,"Last message (at %lu) runs past end of file (%lu > %lu)",
yuuji@0 1292 elt->private.special.offset,(unsigned long) curpos,
yuuji@0 1293 (unsigned long) sbuf.st_size);
yuuji@0 1294 MM_LOG (tmp,ERROR);
yuuji@0 1295 tenex_close (stream,NIL);
yuuji@0 1296 return NIL;
yuuji@0 1297 }
yuuji@0 1298 c = t[10]; /* remember first system flags byte */
yuuji@0 1299 t[10] = '\0'; /* tie off flags */
yuuji@0 1300 j = strtoul (t,NIL,8); /* get user flags value */
yuuji@0 1301 t[10] = c; /* restore first system flags byte */
yuuji@0 1302 /* set up all valid user flags (reversed!) */
yuuji@0 1303 while (j) if (((i = 29 - find_rightmost_bit (&j)) < NUSERFLAGS) &&
yuuji@0 1304 stream->user_flags[i]) elt->user_flags |= 1 << i;
yuuji@0 1305 /* calculate system flags */
yuuji@0 1306 if ((j = ((t[10]-'0') * 8) + t[11]-'0') & fSEEN) elt->seen = T;
yuuji@0 1307 if (j & fDELETED) elt->deleted = T;
yuuji@0 1308 if (j & fFLAGGED) elt->flagged = T;
yuuji@0 1309 if (j & fANSWERED) elt->answered = T;
yuuji@0 1310 if (j & fDRAFT) elt->draft = T;
yuuji@0 1311 if (!(j & fOLD)) { /* newly arrived message? */
yuuji@0 1312 elt->recent = T;
yuuji@0 1313 recent++; /* count up a new recent message */
yuuji@0 1314 /* mark it as old */
yuuji@0 1315 tenex_update_status (stream,nmsgs,NIL);
yuuji@0 1316 }
yuuji@0 1317 }
yuuji@0 1318 fsync (LOCAL->fd); /* make sure all the fOLD flags take */
yuuji@0 1319 /* update parsed file size and time */
yuuji@0 1320 LOCAL->filesize = sbuf.st_size;
yuuji@0 1321 fstat (LOCAL->fd,&sbuf); /* get status again to ensure time is right */
yuuji@0 1322 LOCAL->filetime = sbuf.st_mtime;
yuuji@0 1323 if (added && !stream->rdonly){/* make sure atime updated */
yuuji@0 1324 time_t tp[2];
yuuji@0 1325 tp[0] = time (0);
yuuji@0 1326 tp[1] = LOCAL->filetime;
yuuji@0 1327 utime (stream->mailbox,tp);
yuuji@0 1328 }
yuuji@0 1329 stream->silent = silent; /* can pass up events now */
yuuji@0 1330 mail_exists (stream,nmsgs); /* notify upper level of new mailbox size */
yuuji@0 1331 mail_recent (stream,recent); /* and of change in recent messages */
yuuji@0 1332 return LONGT; /* return the winnage */
yuuji@0 1333 }
yuuji@0 1334
yuuji@0 1335 /* Tenex get cache element with status updating from file
yuuji@0 1336 * Accepts: MAIL stream
yuuji@0 1337 * message number
yuuji@0 1338 * Returns: cache element
yuuji@0 1339 */
yuuji@0 1340
yuuji@0 1341 MESSAGECACHE *tenex_elt (MAILSTREAM *stream,unsigned long msgno)
yuuji@0 1342 {
yuuji@0 1343 MESSAGECACHE *elt = mail_elt (stream,msgno);
yuuji@0 1344 struct { /* old flags */
yuuji@0 1345 unsigned int seen : 1;
yuuji@0 1346 unsigned int deleted : 1;
yuuji@0 1347 unsigned int flagged : 1;
yuuji@0 1348 unsigned int answered : 1;
yuuji@0 1349 unsigned int draft : 1;
yuuji@0 1350 unsigned long user_flags;
yuuji@0 1351 } old;
yuuji@0 1352 old.seen = elt->seen; old.deleted = elt->deleted; old.flagged = elt->flagged;
yuuji@0 1353 old.answered = elt->answered; old.draft = elt->draft;
yuuji@0 1354 old.user_flags = elt->user_flags;
yuuji@0 1355 tenex_read_flags (stream,elt);
yuuji@0 1356 if ((old.seen != elt->seen) || (old.deleted != elt->deleted) ||
yuuji@0 1357 (old.flagged != elt->flagged) || (old.answered != elt->answered) ||
yuuji@0 1358 (old.draft != elt->draft) || (old.user_flags != elt->user_flags))
yuuji@0 1359 MM_FLAGS (stream,msgno); /* let top level know */
yuuji@0 1360 return elt;
yuuji@0 1361 }
yuuji@0 1362
yuuji@0 1363 /* Tenex read flags from file
yuuji@0 1364 * Accepts: MAIL stream
yuuji@0 1365 * Returns: cache element
yuuji@0 1366 */
yuuji@0 1367
yuuji@0 1368 void tenex_read_flags (MAILSTREAM *stream,MESSAGECACHE *elt)
yuuji@0 1369 {
yuuji@0 1370 unsigned long i,j;
yuuji@0 1371 /* noop if readonly and have valid flags */
yuuji@0 1372 if (stream->rdonly && elt->valid) return;
yuuji@0 1373 /* set the seek pointer */
yuuji@0 1374 lseek (LOCAL->fd,(off_t) elt->private.special.offset +
yuuji@0 1375 elt->private.special.text.size - 13,L_SET);
yuuji@0 1376 /* read the new flags */
yuuji@0 1377 if (read (LOCAL->fd,LOCAL->buf,12) < 0) {
yuuji@0 1378 sprintf (LOCAL->buf,"Unable to read new status: %s",strerror (errno));
yuuji@0 1379 fatal (LOCAL->buf);
yuuji@0 1380 }
yuuji@0 1381 /* calculate system flags */
yuuji@0 1382 i = (((LOCAL->buf[10]-'0') * 8) + LOCAL->buf[11]-'0');
yuuji@0 1383 elt->seen = i & fSEEN ? T : NIL; elt->deleted = i & fDELETED ? T : NIL;
yuuji@0 1384 elt->flagged = i & fFLAGGED ? T : NIL;
yuuji@0 1385 elt->answered = i & fANSWERED ? T : NIL; elt->draft = i & fDRAFT ? T : NIL;
yuuji@0 1386 LOCAL->buf[10] = '\0'; /* tie off flags */
yuuji@0 1387 j = strtoul(LOCAL->buf,NIL,8);/* get user flags value */
yuuji@0 1388 /* set up all valid user flags (reversed!) */
yuuji@0 1389 while (j) if (((i = 29 - find_rightmost_bit (&j)) < NUSERFLAGS) &&
yuuji@0 1390 stream->user_flags[i]) elt->user_flags |= 1 << i;
yuuji@0 1391 elt->valid = T; /* have valid flags now */
yuuji@0 1392 }
yuuji@0 1393
yuuji@0 1394 /* Tenex update status string
yuuji@0 1395 * Accepts: MAIL stream
yuuji@0 1396 * message number
yuuji@0 1397 * flag saying whether or not to sync
yuuji@0 1398 */
yuuji@0 1399
yuuji@0 1400 void tenex_update_status (MAILSTREAM *stream,unsigned long msgno,long syncflag)
yuuji@0 1401 {
yuuji@0 1402 time_t tp[2];
yuuji@0 1403 struct stat sbuf;
yuuji@0 1404 MESSAGECACHE *elt = mail_elt (stream,msgno);
yuuji@0 1405 unsigned long j,k = 0;
yuuji@0 1406 /* readonly */
yuuji@0 1407 if (stream->rdonly || !elt->valid) tenex_read_flags (stream,elt);
yuuji@0 1408 else { /* readwrite */
yuuji@0 1409 j = elt->user_flags; /* get user flags */
yuuji@0 1410 /* reverse bits (dontcha wish we had CIRC?) */
yuuji@0 1411 while (j) k |= 1 << (29 - find_rightmost_bit (&j));
yuuji@0 1412 /* print new flag string */
yuuji@0 1413 sprintf (LOCAL->buf,"%010lo%02o",k,(unsigned)
yuuji@0 1414 (fOLD + (fSEEN * elt->seen) + (fDELETED * elt->deleted) +
yuuji@0 1415 (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
yuuji@0 1416 (fDRAFT * elt->draft)));
yuuji@0 1417 /* get to that place in the file */
yuuji@0 1418 lseek (LOCAL->fd,(off_t) elt->private.special.offset +
yuuji@0 1419 elt->private.special.text.size - 13,L_SET);
yuuji@0 1420 /* write new flags */
yuuji@0 1421 write (LOCAL->fd,LOCAL->buf,12);
yuuji@0 1422 if (syncflag) { /* sync if requested */
yuuji@0 1423 fsync (LOCAL->fd);
yuuji@0 1424 fstat (LOCAL->fd,&sbuf); /* get new write time */
yuuji@0 1425 tp[1] = LOCAL->filetime = sbuf.st_mtime;
yuuji@0 1426 tp[0] = time (0); /* make sure read is later */
yuuji@0 1427 utime (stream->mailbox,tp);
yuuji@0 1428 }
yuuji@0 1429 }
yuuji@0 1430 }
yuuji@0 1431
yuuji@0 1432 /* Tenex locate header for a message
yuuji@0 1433 * Accepts: MAIL stream
yuuji@0 1434 * message number
yuuji@0 1435 * pointer to returned header size
yuuji@0 1436 * Returns: position of header in file
yuuji@0 1437 */
yuuji@0 1438
yuuji@0 1439 unsigned long tenex_hdrpos (MAILSTREAM *stream,unsigned long msgno,
yuuji@0 1440 unsigned long *size)
yuuji@0 1441 {
yuuji@0 1442 unsigned long siz;
yuuji@0 1443 long i = 0;
yuuji@0 1444 char c = '\0';
yuuji@0 1445 char *s = NIL;
yuuji@0 1446 MESSAGECACHE *elt = tenex_elt (stream,msgno);
yuuji@0 1447 unsigned long ret = elt->private.special.offset +
yuuji@0 1448 elt->private.special.text.size;
yuuji@0 1449 unsigned long msiz = tenex_size (stream,msgno);
yuuji@0 1450 /* is header size known? */
yuuji@0 1451 if (!(*size = elt->private.msg.header.text.size)) {
yuuji@0 1452 lseek (LOCAL->fd,ret,L_SET);/* get to header position */
yuuji@0 1453 /* search message for LF LF */
yuuji@0 1454 for (siz = 0; siz < msiz; siz++) {
yuuji@0 1455 if (--i <= 0) /* read another buffer as necessary */
yuuji@0 1456 read (LOCAL->fd,s = LOCAL->buf,i = min (msiz-siz,(long) MAILTMPLEN));
yuuji@0 1457 /* two newline sequence? */
yuuji@0 1458 if ((c == '\012') && (*s == '\012')) {
yuuji@0 1459 /* yes, note for later */
yuuji@0 1460 elt->private.msg.header.text.size = (*size = siz + 1);
yuuji@0 1461
yuuji@0 1462 return ret; /* return to caller */
yuuji@0 1463 }
yuuji@0 1464 else c = *s++; /* next character */
yuuji@0 1465 }
yuuji@0 1466 /* header consumes entire message */
yuuji@0 1467 elt->private.msg.header.text.size = *size = msiz;
yuuji@0 1468 }
yuuji@0 1469 return ret;
yuuji@0 1470 }

UW-IMAP'd extensions by yuuji