1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/osdep/dos/bezrkdos.c	Mon Sep 14 15:17:45 2009 +0900
     1.3 @@ -0,0 +1,901 @@
     1.4 +/* ========================================================================
     1.5 + * Copyright 1988-2006 University of Washington
     1.6 + *
     1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
     1.8 + * you may not use this file except in compliance with the License.
     1.9 + * You may obtain a copy of the License at
    1.10 + *
    1.11 + *     http://www.apache.org/licenses/LICENSE-2.0
    1.12 + *
    1.13 + * 
    1.14 + * ========================================================================
    1.15 + */
    1.16 +
    1.17 +/*
    1.18 + * Program:	Berkeley mail routines
    1.19 + *
    1.20 + * Author:	Mark Crispin
    1.21 + *		Networks and Distributed Computing
    1.22 + *		Computing & Communications
    1.23 + *		University of Washington
    1.24 + *		Administration Building, AG-44
    1.25 + *		Seattle, WA  98195
    1.26 + *		Internet: MRC@CAC.Washington.EDU
    1.27 + *
    1.28 + * Date:	24 June 1992
    1.29 + * Last Edited:	30 August 2006
    1.30 + */
    1.31 +
    1.32 +
    1.33 +/* Dedication:
    1.34 + *  This file is dedicated with affection to those Merry Marvels of Musical
    1.35 + * Madness . . .
    1.36 + *  ->  The Incomparable Leland Stanford Junior University Marching Band  <-
    1.37 + * who entertain, awaken, and outrage Stanford fans in the fact of repeated
    1.38 + * losing seasons and shattered Rose Bowl dreams [Cardinal just don't have
    1.39 + * HUSKY FEVER!!!].
    1.40 + *
    1.41 + */
    1.42 +
    1.43 +#include <ctype.h>
    1.44 +#include <errno.h>
    1.45 +#include <fcntl.h>
    1.46 +#include "mail.h"
    1.47 +#include "osdep.h"
    1.48 +#include <time.h>
    1.49 +#include <sys\stat.h>
    1.50 +#include <dos.h>
    1.51 +#include "rfc822.h"
    1.52 +#include "dummy.h"
    1.53 +#include "misc.h"
    1.54 +#include "fdstring.h"
    1.55 +
    1.56 +/* Berkeley I/O stream local data */
    1.57 +	
    1.58 +typedef struct bezerk_local {
    1.59 +  int fd;			/* file descriptor for I/O */
    1.60 +  off_t filesize;		/* file size parsed */
    1.61 +  char *buf;			/* temporary buffer */
    1.62 +} BEZERKLOCAL;
    1.63 +
    1.64 +
    1.65 +/* Convenient access to local data */
    1.66 +
    1.67 +#define LOCAL ((BEZERKLOCAL *) stream->local)
    1.68 +
    1.69 +/* Function prototypes */
    1.70 +
    1.71 +DRIVER *bezerk_valid (char *name);
    1.72 +long bezerk_isvalid (char *name,char *tmp);
    1.73 +int bezerk_valid_line (char *s,char **rx,int *rzn);
    1.74 +void *bezerk_parameters (long function,void *value);
    1.75 +void bezerk_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
    1.76 +void bezerk_list (MAILSTREAM *stream,char *ref,char *pat);
    1.77 +void bezerk_lsub (MAILSTREAM *stream,char *ref,char *pat);
    1.78 +long bezerk_create (MAILSTREAM *stream,char *mailbox);
    1.79 +long bezerk_delete (MAILSTREAM *stream,char *mailbox);
    1.80 +long bezerk_rename (MAILSTREAM *stream,char *old,char *newname);
    1.81 +MAILSTREAM *bezerk_open (MAILSTREAM *stream);
    1.82 +void bezerk_close (MAILSTREAM *stream,long options);
    1.83 +char *bezerk_header (MAILSTREAM *stream,unsigned long msgno,
    1.84 +		     unsigned long *length,long flags);
    1.85 +long bezerk_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,
    1.86 +		  long flags);
    1.87 +long bezerk_ping (MAILSTREAM *stream);
    1.88 +void bezerk_check (MAILSTREAM *stream);
    1.89 +long bezerk_expunge (MAILSTREAM *stream,char *sequence,long options);
    1.90 +long bezerk_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
    1.91 +		  long options);
    1.92 +long bezerk_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
    1.93 +int bezerk_append_msg (MAILSTREAM *stream,FILE *sf,char *flags,char *date,
    1.94 +		     STRING *msg);
    1.95 +void bezerk_gc (MAILSTREAM *stream,long gcflags);
    1.96 +char *bezerk_file (char *dst,char *name);
    1.97 +long bezerk_badname (char *tmp,char *s);
    1.98 +long bezerk_parse (MAILSTREAM *stream);
    1.99 +unsigned long bezerk_hdrpos (MAILSTREAM *stream,unsigned long msgno,
   1.100 +			     unsigned long *size);
   1.101 +
   1.102 +/* Berkeley mail routines */
   1.103 +
   1.104 +
   1.105 +/* Driver dispatch used by MAIL */
   1.106 +
   1.107 +DRIVER bezerkdriver = {
   1.108 +  "bezerk",			/* driver name */
   1.109 +				/* driver flags */
   1.110 +  DR_LOCAL|DR_MAIL|DR_LOWMEM|DR_CRLF|DR_NOSTICKY,
   1.111 +  (DRIVER *) NIL,		/* next driver */
   1.112 +  bezerk_valid,			/* mailbox is valid for us */
   1.113 +  bezerk_parameters,		/* manipulate parameters */
   1.114 +  bezerk_scan,			/* scan mailboxes */
   1.115 +  bezerk_list,			/* list mailboxes */
   1.116 +  bezerk_lsub,			/* list subscribed mailboxes */
   1.117 +  NIL,				/* subscribe to mailbox */
   1.118 +  NIL,				/* unsubscribe from mailbox */
   1.119 +  bezerk_create,		/* create mailbox */
   1.120 +  bezerk_delete,		/* delete mailbox */
   1.121 +  bezerk_rename,		/* rename mailbox */
   1.122 +  mail_status_default,		/* status of mailbox */
   1.123 +  bezerk_open,			/* open mailbox */
   1.124 +  bezerk_close,			/* close mailbox */
   1.125 +  NIL,				/* fetch message "fast" attributes */
   1.126 +  NIL,				/* fetch message flags */
   1.127 +  NIL,				/* fetch overview */
   1.128 +  NIL,				/* fetch message envelopes */
   1.129 +  bezerk_header,		/* fetch message header */
   1.130 +  bezerk_text,			/* fetch message text */
   1.131 +  NIL,				/* fetch partial message text */
   1.132 +  NIL,				/* unique identifier */
   1.133 +  NIL,				/* message number */
   1.134 +  NIL,				/* modify flags */
   1.135 +  NIL,				/* per-message modify flags */
   1.136 +  NIL,				/* search for message based on criteria */
   1.137 +  NIL,				/* sort messages */
   1.138 +  NIL,				/* thread messages */
   1.139 +  bezerk_ping,			/* ping mailbox to see if still alive */
   1.140 +  bezerk_check,			/* check for new messages */
   1.141 +  bezerk_expunge,		/* expunge deleted messages */
   1.142 +  bezerk_copy,			/* copy messages to another mailbox */
   1.143 +  bezerk_append,		/* append string message to mailbox */
   1.144 +  NIL				/* garbage collect stream */
   1.145 +};
   1.146 +
   1.147 +				/* prototype stream */
   1.148 +MAILSTREAM bezerkproto = {&bezerkdriver};
   1.149 +
   1.150 +/* Berkeley mail validate mailbox
   1.151 + * Accepts: mailbox name
   1.152 + * Returns: our driver if name is valid, NIL otherwise
   1.153 + */
   1.154 +
   1.155 +DRIVER *bezerk_valid (char *name)
   1.156 +{
   1.157 +  char tmp[MAILTMPLEN];
   1.158 +  return bezerk_isvalid (name,tmp) ? &bezerkdriver : (DRIVER *) NIL;
   1.159 +}
   1.160 +
   1.161 +
   1.162 +/* Berkeley mail test for valid mailbox
   1.163 + * Accepts: mailbox name
   1.164 + * Returns: T if valid, NIL otherwise
   1.165 + */
   1.166 +
   1.167 +long bezerk_isvalid (char *name,char *tmp)
   1.168 +{
   1.169 +  int fd;
   1.170 +  long ret = NIL;
   1.171 +  struct stat sbuf;
   1.172 +  errno = EINVAL;		/* assume invalid argument */
   1.173 +				/* if file, get its status */
   1.174 +  if ((*name != '{') && mailboxfile (tmp,name) && !stat (tmp,&sbuf)) {
   1.175 +    if (!sbuf.st_size)errno = 0;/* empty file */
   1.176 +    else if ((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) >= 0) {
   1.177 +      memset (tmp,'\0',MAILTMPLEN);
   1.178 +      errno = -1;		/* in case bezerk_valid_line fails */
   1.179 +      if (read (fd,tmp,MAILTMPLEN-1) >= 0)
   1.180 +	ret = bezerk_valid_line (tmp,NIL,NIL);
   1.181 +      close (fd);		/* close the file */
   1.182 +    }
   1.183 +  }
   1.184 +				/* in case INBOX but not bezerk format */
   1.185 +  else if ((errno == ENOENT) && ((name[0] == 'I') || (name[0] == 'i')) &&
   1.186 +	   ((name[1] == 'N') || (name[1] == 'n')) &&
   1.187 +	   ((name[2] == 'B') || (name[2] == 'b')) &&
   1.188 +	   ((name[3] == 'O') || (name[3] == 'o')) &&
   1.189 +	   ((name[4] == 'X') || (name[4] == 'x')) && !name[5]) errno = -1;
   1.190 +  return ret;			/* return what we should */
   1.191 +}
   1.192 +
   1.193 +/* Validate line
   1.194 + * Accepts: pointer to candidate string to validate as a From header
   1.195 + *	    return pointer to end of date/time field
   1.196 + *	    return pointer to offset from t of time (hours of ``mmm dd hh:mm'')
   1.197 + *	    return pointer to offset from t of time zone (if non-zero)
   1.198 + * Returns: t,ti,zn set if valid From string, else ti is NIL
   1.199 + */
   1.200 +
   1.201 +int bezerk_valid_line (char *s,char **rx,int *rzn)
   1.202 +{
   1.203 +  char *x;
   1.204 +  int zn;
   1.205 +  int ti = 0;
   1.206 +				/* line must begin with "From " */
   1.207 +  if ((*s != 'F') || (s[1] != 'r') || (s[2] != 'o') || (s[3] != 'm') ||
   1.208 +	(s[4] != ' ')) return NIL;
   1.209 +				/* find end of line */
   1.210 +  for (x = s + 5; *x && *x != '\012'; x++);
   1.211 +  if (!x) return NIL;		/* end of line not found */
   1.212 +  if (x[-1] == '\015') x--;	/* ignore CR */
   1.213 +  if ((x - s < 27)) return NIL;	/* line too short */
   1.214 +  if (x - s >= 41) {		/* possible search for " remote from " */
   1.215 +    for (zn = -1; x[zn] != ' '; zn--);
   1.216 +    if ((x[zn-1] == 'm') && (x[zn-2] == 'o') && (x[zn-3] == 'r') &&
   1.217 +	(x[zn-4] == 'f') && (x[zn-5] == ' ') && (x[zn-6] == 'e') &&
   1.218 +	(x[zn-7] == 't') && (x[zn-8] == 'o') && (x[zn-9] == 'm') &&
   1.219 +	(x[zn-10] == 'e') && (x[zn-11] == 'r') && (x[zn-12] == ' '))
   1.220 +      x += zn - 12;
   1.221 +  }
   1.222 +  if (x[-5] == ' ') {		/* ends with year? */
   1.223 +				/* no timezone? */
   1.224 +    if (x[-8] == ':') zn = 0,ti = -5;
   1.225 +				/* three letter timezone? */
   1.226 +    else if (x[-9] == ' ') ti = zn = -9;
   1.227 +				/* numeric timezone? */
   1.228 +    else if ((x[-11]==' ') && ((x[-10]=='+') || (x[-10]=='-'))) ti = zn = -11;
   1.229 +  }
   1.230 +  else if (x[-4] == ' ') {	/* no year and three leter timezone? */
   1.231 +    if (x[-9] == ' ') zn = -4,ti = -9;
   1.232 +  }
   1.233 +  else if (x[-6] == ' ') {	/* no year and numeric timezone? */
   1.234 +    if ((x[-11] == ' ') && ((x[-5] == '+') || (x[-5] == '-')))
   1.235 +      zn = -6,ti = -11;
   1.236 +  }
   1.237 +				/* time must be www mmm dd hh:mm[:ss] */
   1.238 +  if (ti && !((x[ti - 3] == ':') &&
   1.239 +	      (x[ti -= ((x[ti - 6] == ':') ? 9 : 6)] == ' ') &&
   1.240 +	      (x[ti - 3] == ' ') && (x[ti - 7] == ' ') &&
   1.241 +	      (x[ti - 11] == ' '))) return NIL;
   1.242 +  if (rx) *rx = x;		/* set return values */
   1.243 +  if (rzn) *rzn = zn;
   1.244 +  return ti;
   1.245 +}
   1.246 +
   1.247 +/* Berkeley manipulate driver parameters
   1.248 + * Accepts: function code
   1.249 + *	    function-dependent value
   1.250 + * Returns: function-dependent return value
   1.251 + */
   1.252 +
   1.253 +void *bezerk_parameters (long function,void *value)
   1.254 +{
   1.255 +  return NIL;
   1.256 +}
   1.257 +
   1.258 +
   1.259 +/* Berkeley mail scan mailboxes
   1.260 + * Accepts: mail stream
   1.261 + *	    reference
   1.262 + *	    pattern to search
   1.263 + *	    string to scan
   1.264 + */
   1.265 +
   1.266 +void bezerk_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
   1.267 +{
   1.268 +  if (stream) dummy_scan (NIL,ref,pat,contents);
   1.269 +}
   1.270 +
   1.271 +
   1.272 +/* Berkeley mail list mailboxes
   1.273 + * Accepts: mail stream
   1.274 + *	    reference
   1.275 + *	    pattern to search
   1.276 + */
   1.277 +
   1.278 +void bezerk_list (MAILSTREAM *stream,char *ref,char *pat)
   1.279 +{
   1.280 +  if (stream) dummy_list (stream,ref,pat);
   1.281 +}
   1.282 +
   1.283 +
   1.284 +/* Berkeley mail list subscribed mailboxes
   1.285 + * Accepts: mail stream
   1.286 + *	    reference
   1.287 + *	    pattern to search
   1.288 + */
   1.289 +
   1.290 +void bezerk_lsub (MAILSTREAM *stream,char *ref,char *pat)
   1.291 +{
   1.292 +  if (stream) dummy_lsub (stream,ref,pat);
   1.293 +}
   1.294 +
   1.295 +/* Berkeley mail create mailbox
   1.296 + * Accepts: MAIL stream
   1.297 + *	    mailbox name to create
   1.298 + * Returns: T on success, NIL on failure
   1.299 + */
   1.300 +
   1.301 +long bezerk_create (MAILSTREAM *stream,char *mailbox)
   1.302 +{
   1.303 +  return dummy_create (stream,mailbox);
   1.304 +}
   1.305 +
   1.306 +
   1.307 +/* Berkeley mail delete mailbox
   1.308 + * Accepts: MAIL stream
   1.309 + *	    mailbox name to delete
   1.310 + * Returns: T on success, NIL on failure
   1.311 + */
   1.312 +
   1.313 +long bezerk_delete (MAILSTREAM *stream,char *mailbox)
   1.314 +{
   1.315 +  return dummy_delete (stream,mailbox);
   1.316 +}
   1.317 +
   1.318 +
   1.319 +/* Berkeley mail rename mailbox
   1.320 + * Accepts: MAIL stream
   1.321 + *	    old mailbox name
   1.322 + *	    new mailbox name (or NIL for delete)
   1.323 + * Returns: T on success, NIL on failure
   1.324 + */
   1.325 +
   1.326 +long bezerk_rename (MAILSTREAM *stream,char *old,char *newname)
   1.327 +{
   1.328 +  return dummy_rename (stream,old,newname);
   1.329 +}
   1.330 +
   1.331 +/* Berkeley mail open
   1.332 + * Accepts: stream to open
   1.333 + * Returns: stream on success, NIL on failure
   1.334 + */
   1.335 +
   1.336 +MAILSTREAM *bezerk_open (MAILSTREAM *stream)
   1.337 +{
   1.338 +  long i;
   1.339 +  int fd;
   1.340 +  char *s;
   1.341 +  char tmp[MAILTMPLEN];
   1.342 +				/* return prototype for OP_PROTOTYPE call */
   1.343 +  if (!stream) return &bezerkproto;
   1.344 +  if (stream->local) fatal ("bezerk recycle stream");
   1.345 +  if (!mailboxfile (tmp,stream->mailbox))
   1.346 +    return (MAILSTREAM *) bezerk_badname (tmp,stream->mailbox);
   1.347 +  if (((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) < 0)) {
   1.348 +    sprintf (tmp,"Can't open mailbox: %s",strerror (errno));
   1.349 +    mm_log (tmp,ERROR);
   1.350 +    return NIL;
   1.351 +  }
   1.352 +  stream->rdonly = T;		/* this driver is readonly */
   1.353 +  stream->local = fs_get (sizeof (BEZERKLOCAL));
   1.354 +				/* canonicalize the stream mailbox name */
   1.355 +  fs_give ((void **) &stream->mailbox);
   1.356 +  if (s = strchr ((s = strrchr (tmp,'\\')) ? s : tmp,'.')) *s = '\0';
   1.357 +  stream->mailbox = cpystr (tmp);
   1.358 +  LOCAL->fd = fd;		/* note the file */
   1.359 +  LOCAL->filesize = 0;		/* initialize parsed file size */
   1.360 +  LOCAL->buf = NIL;		/* initially no local buffer */
   1.361 +  stream->sequence++;		/* bump sequence number */
   1.362 +  stream->uid_validity = time (0);
   1.363 +				/* parse mailbox */
   1.364 +  stream->nmsgs = stream->recent = 0;
   1.365 +  if (!bezerk_ping (stream)) return NIL;
   1.366 +  if (!stream->nmsgs) mm_log ("Mailbox is empty",(long) NIL);
   1.367 +  stream->perm_seen = stream->perm_deleted =
   1.368 +    stream->perm_flagged = stream->perm_answered = stream->perm_draft = NIL;
   1.369 +  stream->perm_user_flags = NIL;
   1.370 +  return stream;		/* return stream to caller */
   1.371 +}
   1.372 +
   1.373 +/* Berkeley mail close
   1.374 + * Accepts: MAIL stream
   1.375 + *	    close options
   1.376 + */
   1.377 +
   1.378 +void bezerk_close (MAILSTREAM *stream,long options)
   1.379 +{
   1.380 +  if (stream && LOCAL) {	/* only if a file is open */
   1.381 +    int silent = stream->silent;
   1.382 +    stream->silent = T;
   1.383 +    if (options & CL_EXPUNGE) bezerk_expunge (stream,NIL,NIL);
   1.384 +    close (LOCAL->fd);		/* close the local file */
   1.385 +    if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
   1.386 +				/* nuke the local data */
   1.387 +    fs_give ((void **) &stream->local);
   1.388 +    stream->dtb = NIL;		/* log out the DTB */
   1.389 +  }
   1.390 +}
   1.391 +
   1.392 +/* Berkeley mail fetch message header
   1.393 + * Accepts: MAIL stream
   1.394 + *	    message # to fetch
   1.395 + *	    pointer to returned header text length
   1.396 + *	    option flags
   1.397 + * Returns: message header in RFC822 format
   1.398 + */
   1.399 +
   1.400 +char *bezerk_header (MAILSTREAM *stream,unsigned long msgno,
   1.401 +		     unsigned long *length,long flags)
   1.402 +{
   1.403 +  char tmp[MAILTMPLEN];
   1.404 +  *length = 0;			/* default to empty */
   1.405 +  if (flags & FT_UID) return "";/* UID call "impossible" */
   1.406 +				/* get to header position */
   1.407 +  lseek (LOCAL->fd,bezerk_hdrpos (stream,msgno,length),L_SET);
   1.408 +				/* is buffer big enough? */
   1.409 +  if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
   1.410 +  LOCAL->buf = (char *) fs_get ((size_t) *length + 1);
   1.411 +  LOCAL->buf[*length] = '\0';	/* tie off string */
   1.412 +				/* slurp the data */
   1.413 +  read (LOCAL->fd,LOCAL->buf,(size_t) *length);
   1.414 +  return LOCAL->buf;
   1.415 +}
   1.416 +
   1.417 +
   1.418 +/* Berkeley mail fetch message text (body only)
   1.419 + * Accepts: MAIL stream
   1.420 + *	    message # to fetch
   1.421 + *	    pointer to returned header text length
   1.422 + *	    option flags
   1.423 + * Returns: T, always
   1.424 + */
   1.425 +
   1.426 +long bezerk_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
   1.427 +{
   1.428 +  MESSAGECACHE *elt;
   1.429 +  FDDATA d;
   1.430 +  unsigned long hdrsize,hdrpos;
   1.431 +				/* UID call "impossible" */
   1.432 +  if (flags & FT_UID) return NIL;
   1.433 +  elt = mail_elt (stream,msgno);/* if message not seen */
   1.434 +				/* mark message as seen */
   1.435 +  if (elt->seen && !(flags & FT_PEEK)) {
   1.436 +    elt->seen = T;
   1.437 +    mm_flags (stream,msgno);
   1.438 +  }
   1.439 +				/* get location of text data */
   1.440 +  hdrpos = bezerk_hdrpos (stream,msgno,&hdrsize);
   1.441 +  d.fd = LOCAL->fd;		/* set initial stringstruct */
   1.442 +  d.pos = hdrpos + hdrsize;
   1.443 +				/* flush old buffer */
   1.444 +  if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
   1.445 +  d.chunk = LOCAL->buf = (char *) fs_get ((size_t) d.chunksize = CHUNKSIZE);
   1.446 +  INIT (bs,fd_string,(void *) &d,elt->rfc822_size - hdrsize);
   1.447 +  return T;			/* success */
   1.448 +}
   1.449 +
   1.450 +/* Berkeley mail ping mailbox
   1.451 + * Accepts: MAIL stream
   1.452 + * Returns: T if stream still alive, NIL if not
   1.453 + */
   1.454 +
   1.455 +long bezerk_ping (MAILSTREAM *stream)
   1.456 +{
   1.457 +				/* punt if stream no longer alive */
   1.458 +  if (!(stream && LOCAL)) return NIL;
   1.459 +				/* parse mailbox, punt if parse dies */
   1.460 +  return (bezerk_parse (stream)) ? T : NIL;
   1.461 +}
   1.462 +
   1.463 +
   1.464 +/* Berkeley mail check mailbox (reparses status too)
   1.465 + * Accepts: MAIL stream
   1.466 + */
   1.467 +
   1.468 +void bezerk_check (MAILSTREAM *stream)
   1.469 +{
   1.470 +  unsigned long i = 1;
   1.471 +  if (bezerk_ping (stream)) {	/* ping mailbox */
   1.472 +				/* get new message status */
   1.473 +    while (i <= stream->nmsgs) mail_elt (stream,i++);
   1.474 +    mm_log ("Check completed",(long) NIL);
   1.475 +  }
   1.476 +}
   1.477 +
   1.478 +/* Berkeley mail expunge mailbox
   1.479 + * Accepts: MAIL stream
   1.480 + *	    sequence to expunge if non-NIL
   1.481 + *	    expunge options
   1.482 + * Returns: T, always
   1.483 + */
   1.484 +
   1.485 +long bezerk_expunge (MAILSTREAM *stream,char *sequence,long options)
   1.486 +{
   1.487 +  if (!stream->silent) mm_log ("Expunge ignored on readonly mailbox",WARN);
   1.488 +  return LONGT;
   1.489 +}
   1.490 +
   1.491 +/* Berkeley mail copy message(s)
   1.492 + * Accepts: MAIL stream
   1.493 + *	    sequence
   1.494 + *	    destination mailbox
   1.495 + *	    copy options
   1.496 + * Returns: T if success, NIL if failed
   1.497 + */
   1.498 +
   1.499 +long bezerk_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
   1.500 +{
   1.501 +  char tmp[MAILTMPLEN];
   1.502 +  struct stat sbuf;
   1.503 +  MESSAGECACHE *elt;
   1.504 +  unsigned long i,j,k;
   1.505 +  int fd;
   1.506 +  mailproxycopy_t pc =
   1.507 +    (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
   1.508 +  if (!((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
   1.509 +	mail_sequence (stream,sequence))) return NIL;
   1.510 +				/* make sure valid mailbox */
   1.511 +  if (!bezerk_isvalid (mailbox,tmp) && errno) {
   1.512 +    if (errno == ENOENT)
   1.513 +      mm_notify (stream,"[TRYCREATE] Must create mailbox before append",
   1.514 +		 (long) NIL);
   1.515 +    else if (pc) return (*pc) (stream,sequence,mailbox,options);
   1.516 +    else if (mailboxfile (tmp,mailbox)) {
   1.517 +      sprintf (tmp,"Not a Bezerk-format mailbox: %s",mailbox);
   1.518 +      mm_log (tmp,ERROR);
   1.519 +    }
   1.520 +    else bezerk_badname (tmp,mailbox);
   1.521 +    return NIL;
   1.522 +  }
   1.523 +				/* open the destination */
   1.524 +  if (!mailboxfile (tmp,mailbox) ||
   1.525 +      (fd = open (tmp,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
   1.526 +		  S_IREAD|S_IWRITE)) < 0) {
   1.527 +    sprintf (tmp,"Unable to open copy mailbox: %s",strerror (errno));
   1.528 +    mm_log (tmp,ERROR);
   1.529 +    return NIL;
   1.530 +  }
   1.531 +
   1.532 +  mm_critical (stream);		/* go critical */
   1.533 +  fstat (fd,&sbuf);		/* get current file size */
   1.534 +				/* for each requested message */
   1.535 +  for (i = 1; i <= stream->nmsgs; i++)
   1.536 +    if ((elt = mail_elt (stream,i))->sequence) {
   1.537 +      lseek (LOCAL->fd,elt->private.special.offset,SEEK_SET);
   1.538 +				/* number of bytes to copy */
   1.539 +      j = elt->private.msg.full.offset + elt->rfc822_size;
   1.540 +      do {			/* read from source position */
   1.541 +	k = min (j,(unsigned long) MAILTMPLEN);
   1.542 +	read (LOCAL->fd,tmp,(unsigned int) k);
   1.543 +	if (write (fd,tmp,(unsigned int) k) < 0) {
   1.544 +	  sprintf (tmp,"Unable to write message: %s",strerror (errno));
   1.545 +	  mm_log (tmp,ERROR);
   1.546 +	  chsize (fd,sbuf.st_size);
   1.547 +	  close (fd);		/* punt */
   1.548 +	  mm_nocritical (stream);
   1.549 +	  return NIL;
   1.550 +	}
   1.551 +      } while (j -= k);		/* until done */
   1.552 +    }
   1.553 +  close (fd);			/* close the file */
   1.554 +  mm_nocritical (stream);	/* release critical */
   1.555 +				/* delete all requested messages */
   1.556 +  if (options & CP_MOVE) for (i = 1; i <= stream->nmsgs; i++)
   1.557 +    if ((elt = mail_elt (stream,i))->sequence) elt->deleted = T;
   1.558 +  if (mail_parameters (NIL,GET_COPYUID,NIL))
   1.559 +    mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
   1.560 +  return T;
   1.561 +}
   1.562 +
   1.563 +/* Berkeley mail append message from stringstruct
   1.564 + * Accepts: MAIL stream
   1.565 + *	    destination mailbox
   1.566 + *	    append callback
   1.567 + *	    data for callback
   1.568 + * Returns: T if append successful, else NIL
   1.569 + */
   1.570 +
   1.571 +#define BUFLEN MAILTMPLEN
   1.572 +
   1.573 +long bezerk_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
   1.574 +{
   1.575 +  struct stat sbuf;
   1.576 +  int fd;
   1.577 +  unsigned long i,j;
   1.578 +  char *flags,*date,buf[BUFLEN],tmp[MAILTMPLEN],file[MAILTMPLEN];
   1.579 +  FILE *sf,*df;
   1.580 +  MESSAGECACHE elt;
   1.581 +  STRING *message;
   1.582 +  long ret = LONGT;
   1.583 +				/* default stream to prototype */
   1.584 +  if (!stream) stream = &bezerkproto;
   1.585 +				/* make sure valid mailbox */
   1.586 +  if (!bezerk_isvalid (mailbox,tmp) && errno) {
   1.587 +    if (errno == ENOENT) {
   1.588 +      if (((mailbox[0] == 'I') || (mailbox[0] == 'i')) &&
   1.589 +	  ((mailbox[1] == 'N') || (mailbox[1] == 'n')) &&
   1.590 +	  ((mailbox[2] == 'B') || (mailbox[2] == 'b')) &&
   1.591 +	  ((mailbox[3] == 'O') || (mailbox[3] == 'o')) &&
   1.592 +	  ((mailbox[4] == 'X') || (mailbox[4] == 'x')) && !mailbox[5])
   1.593 +	bezerk_create (NIL,"INBOX");
   1.594 +      else {
   1.595 +	mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
   1.596 +	return NIL;
   1.597 +      }
   1.598 +    }
   1.599 +    else if (mailboxfile (tmp,mailbox)) {
   1.600 +      sprintf (tmp,"Not a Bezerk-format mailbox: %.80ss",mailbox);
   1.601 +      mm_log (tmp,ERROR);
   1.602 +    }
   1.603 +    else bezerk_badname (tmp,mailbox);
   1.604 +    return NIL;
   1.605 +  }
   1.606 +  tzset ();			/* initialize timezone stuff */
   1.607 +				/* get first message */
   1.608 +  if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
   1.609 +  if (!(sf = tmpfile ())) {	/* must have scratch file */
   1.610 +    sprintf (tmp,"Unable to create scratch file: %.80s",strerror (errno));
   1.611 +    mm_log (tmp,ERROR);
   1.612 +  }
   1.613 +
   1.614 +  do {				/* parse date */
   1.615 +    if (!date) rfc822_date (date = tmp);
   1.616 +    if (!mail_parse_date (&elt,date)) {
   1.617 +      sprintf (tmp,"Bad date in append: %.80s",date);
   1.618 +      mm_log (tmp,ERROR);
   1.619 +    }
   1.620 +    else {			/* user wants to suppress time zones? */
   1.621 +      if (mail_parameters (NIL,GET_NOTIMEZONES,NIL)) {
   1.622 +	time_t when = mail_longdate (&elt);
   1.623 +	date = ctime (&when);	/* use traditional date */
   1.624 +      }
   1.625 +				/* use POSIX-style date */
   1.626 +      else date = mail_cdate (tmp,&elt);
   1.627 +      if (!SIZE (message)) mm_log ("Append of zero-length message",ERROR);
   1.628 +      else if (!bezerk_append_msg (stream,sf,flags,date,message)) {
   1.629 +	sprintf (tmp,"Error writing scratch file: %.80s",strerror (errno));
   1.630 +	mm_log (tmp,ERROR);
   1.631 +      }
   1.632 +				/* get next message */
   1.633 +      else if ((*af) (stream,data,&flags,&date,&message)) continue;
   1.634 +    }
   1.635 +    fclose (sf);		/* punt scratch file */
   1.636 +    return NIL;			/* give up */
   1.637 +  } while (message);		/* until no more messages */
   1.638 +  if (fflush (sf) || fstat (fileno (sf),&sbuf)) {
   1.639 +    sprintf (tmp,"Error finishing scratch file: %.80s",strerror (errno));
   1.640 +    mm_log (tmp,ERROR);
   1.641 +    fclose (sf);		/* punt scratch file */
   1.642 +    return NIL;			/* give up */
   1.643 +  }
   1.644 +  i = sbuf.st_size;		/* size of scratch file */
   1.645 +
   1.646 +  mm_critical (stream);		/* go critical */
   1.647 +				/* open the destination */
   1.648 +  if (!mailboxfile (tmp,mailbox) || 
   1.649 +      ((fd = open (tmp,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
   1.650 +		   S_IREAD|S_IWRITE)) < 0) ||
   1.651 +      !(df = fdopen (fd,"ab"))) {
   1.652 +    mm_nocritical (stream);	/* done with critical */
   1.653 +    sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
   1.654 +    mm_log (tmp,ERROR);
   1.655 +    return NIL;
   1.656 +  }
   1.657 +  fstat (fd,&sbuf);		/* get current file size */
   1.658 +  while (i)			/* until written all bytes */
   1.659 +    if ((j = fread (buf,1,min ((long) BUFLEN,i),sf)) &&
   1.660 +	(fwrite (buf,1,j,df) == j)) i -= j;
   1.661 +  fclose (sf);			/* done with scratch file */
   1.662 +				/* make sure append wins */
   1.663 +  if (i || (fflush (df) == EOF)) {
   1.664 +    chsize (fd,sbuf.st_size);	/* revert file */
   1.665 +    close (fd);			/* make sure fclose() doesn't corrupt us */
   1.666 +    sprintf (buf,"Message append failed: %s",strerror (errno));
   1.667 +    mm_log (buf,ERROR);
   1.668 +    ret = NIL;			/* return error */
   1.669 +  }
   1.670 +  fclose (df);
   1.671 +  mm_nocritical (stream);	/* release critical */
   1.672 +  if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
   1.673 +    mm_log ("Can not return meaningful APPENDUID with this mailbox format",
   1.674 +	    WARN);
   1.675 +  return ret;
   1.676 +}
   1.677 +
   1.678 +/* Write single message to append scratch file
   1.679 + * Accepts: MAIL stream
   1.680 + *	    scratch file
   1.681 + *	    flags
   1.682 + *	    message stringstruct
   1.683 + * Returns: NIL if write error, else T
   1.684 + */
   1.685 +
   1.686 +int bezerk_append_msg (MAILSTREAM *stream,FILE *sf,char *flags,char *date,
   1.687 +		     STRING *msg)
   1.688 +{
   1.689 +  int c;
   1.690 +  unsigned long i,uf;
   1.691 +  char tmp[MAILTMPLEN];
   1.692 +  long f = mail_parse_flags (stream,flags,&uf);
   1.693 +				/* build initial header */
   1.694 +  if ((fprintf (sf,"From %s@%s %sStatus: ",
   1.695 +		myusername (),mylocalhost (),date) < 0) ||
   1.696 +      (f&fSEEN && (putc ('R',sf) == EOF)) ||
   1.697 +      (fputs ("\nX-Status: ",sf) == EOF) ||
   1.698 +      (f&fDELETED && (putc ('D',sf) == EOF)) ||
   1.699 +      (f&fFLAGGED && (putc ('F',sf) == EOF)) ||
   1.700 +      (f&fANSWERED && (putc ('A',sf) == EOF)) ||
   1.701 +      (f&fDRAFT && (putc ('T',sf) == EOF)) ||
   1.702 +      (fputs ("\nX-Keywords:",sf) == EOF)) return NIL;
   1.703 +  while (uf)			/* write user flags */
   1.704 +    if (fprintf (sf," %s",stream->user_flags[find_rightmost_bit (&uf)]) < 0)
   1.705 +      return NIL;
   1.706 +				/* tie off flags */
   1.707 +  if (putc ('\n',sf) == EOF) return NIL;
   1.708 +  while (SIZE (msg)) {		/* copy text to scratch file */
   1.709 +				/* possible delimiter if line starts with F */
   1.710 +    if ((c = 0xff & SNX (msg)) == 'F') {
   1.711 +				/* copy line to buffer */
   1.712 +      for (i = 1,tmp[0] = c; SIZE (msg) && (c != '\n') && (i < MAILTMPLEN);)
   1.713 +	if (((c = 0xff & SNX (msg)) != '\r') || !(SIZE (msg)) ||
   1.714 +	    (CHR (msg) != '\n')) tmp[i++] = c;
   1.715 +      if ((i > 4) && (tmp[1] == 'r') && (tmp[2] == 'o') && (tmp[3] == 'm') &&
   1.716 +	  (tmp[4] == ' ')) {	/* possible "From " line? */
   1.717 +				/* yes, see if need to write a widget */
   1.718 +	if (((c != '\n') || bezerk_valid_line (tmp,NIL,NIL)) &&
   1.719 +	    (putc ('>',sf) == EOF)) return NIL;
   1.720 +      }
   1.721 +				/* write buffered text */
   1.722 +      if (fwrite (tmp,1,i,sf) != i) return NIL;
   1.723 +      if (c == '\n') continue;	/* all done if got a complete line */
   1.724 +    }
   1.725 +				/* copy line, toss out CR from CRLF */
   1.726 +    do if (((c == '\r') && SIZE (msg) && ((c = 0xff & SNX (msg)) != '\n') &&
   1.727 +	    (putc ('\r',sf) == EOF)) || (putc (c,sf) == EOF)) return NIL;
   1.728 +    while ((c != '\n') && SIZE (msg) && ((c = 0xff & SNX (msg)) ? c : T));
   1.729 +  }
   1.730 +				/* write trailing newline and return */
   1.731 +  return (putc ('\n',sf) == EOF) ? NIL : T;
   1.732 +}
   1.733 +
   1.734 +
   1.735 +/* Return bad file name error message
   1.736 + * Accepts: temporary buffer
   1.737 + *	    file name
   1.738 + * Returns: long NIL always
   1.739 + */
   1.740 +
   1.741 +long bezerk_badname (char *tmp,char *s)
   1.742 +{
   1.743 +  sprintf (tmp,"Invalid mailbox name: %s",s);
   1.744 +  mm_log (tmp,ERROR);
   1.745 +  return (long) NIL;
   1.746 +}
   1.747 +
   1.748 +/* Parse mailbox
   1.749 + * Accepts: MAIL stream
   1.750 + * Returns: T if parse OK
   1.751 + *	    NIL if failure, stream aborted
   1.752 + */
   1.753 +
   1.754 +long bezerk_parse (MAILSTREAM *stream)
   1.755 +{
   1.756 +  struct stat sbuf;
   1.757 +  MESSAGECACHE *elt;
   1.758 +  char *s,*t,tmp[MAILTMPLEN + 1],*db,datemsg[100];
   1.759 +  long i;
   1.760 +  int j,ti,zn;
   1.761 +  long curpos = LOCAL->filesize;
   1.762 +  long nmsgs = stream->nmsgs;
   1.763 +  long recent = stream->recent;
   1.764 +  short silent = stream->silent;
   1.765 +  fstat (LOCAL->fd,&sbuf);	/* get status */
   1.766 +  if (sbuf.st_size < curpos) {	/* sanity check */
   1.767 +    sprintf (tmp,"Mailbox shrank from %ld to %ld!",curpos,sbuf.st_size);
   1.768 +    mm_log (tmp,ERROR);
   1.769 +    bezerk_close (stream,NIL);
   1.770 +    return NIL;
   1.771 +  }
   1.772 +  stream->silent = T;		/* don't pass up mm_exists() events yet */
   1.773 +  db = datemsg + strlen (strcpy (datemsg,"Unparsable date: "));
   1.774 +				/* while there is data to read */
   1.775 +  while (i = sbuf.st_size - curpos){
   1.776 +				/* get to that position in the file */
   1.777 +    lseek (LOCAL->fd,curpos,SEEK_SET);
   1.778 +				/* read first buffer's worth */
   1.779 +    read (LOCAL->fd,tmp,j = (int) min (i,(long) MAILTMPLEN));
   1.780 +    tmp[j] = '\0';		/* tie off buffer */
   1.781 +    if (!(ti = bezerk_valid_line (tmp,&t,&zn))) {
   1.782 +      mm_log ("Mailbox format invalidated (consult an expert), aborted",ERROR);
   1.783 +      bezerk_close (stream,NIL);
   1.784 +      return NIL;
   1.785 +    }
   1.786 +
   1.787 +				/* swell the cache */
   1.788 +    mail_exists (stream,++nmsgs);
   1.789 +				/* instantiate an elt for this message */
   1.790 +    (elt = mail_elt (stream,nmsgs))->valid = T;
   1.791 +    elt->private.uid = ++stream->uid_last;
   1.792 +				/* note file offset of header */
   1.793 +    elt->private.special.offset = curpos;
   1.794 +				/* note offset of message */
   1.795 +    elt->private.msg.full.offset =
   1.796 +      (s = ((*t == '\015') ? (t + 2) : (t + 1))) - tmp;
   1.797 +				/* generate plausable IMAPish date string */
   1.798 +    db[2] = db[6] = db[20] = '-'; db[11] = ' '; db[14] = db[17] = ':';
   1.799 +				/* dd */
   1.800 +    db[0] = t[ti - 2]; db[1] = t[ti - 1];
   1.801 +				/* mmm */
   1.802 +    db[3] = t[ti - 6]; db[4] = t[ti - 5]; db[5] = t[ti - 4];
   1.803 +				/* hh */
   1.804 +    db[12] = t[ti + 1]; db[13] = t[ti + 2];
   1.805 +				/* mm */
   1.806 +    db[15] = t[ti + 4]; db[16] = t[ti + 5];
   1.807 +    if (t[ti += 6] == ':') {	/* ss if present */
   1.808 +      db[18] = t[++ti]; db[19] = t[++ti];
   1.809 +      ti++;			/* move to space */
   1.810 +    }
   1.811 +    else db[18] = db[19] = '0';	/* assume 0 seconds */
   1.812 +				/* yy -- advance over timezone if necessary */
   1.813 +    if (++zn == ++ti) ti += (((t[zn] == '+') || (t[zn] == '-')) ? 6 : 4);
   1.814 +    db[7] = t[ti]; db[8] = t[ti + 1]; db[9] = t[ti + 2]; db[10] = t[ti + 3];
   1.815 +    t = zn ? (t + zn) : "LCL";	/* zzz */
   1.816 +    db[21] = *t++; db[22] = *t++; db[23] = *t++;
   1.817 +    if ((db[21] != '+') && (db[21] != '-')) db[24] = '\0';
   1.818 +    else {			/* numeric time zone */
   1.819 +      db[20] = ' '; db[24] = *t++; db[25] = *t++; db[26] = '\0';
   1.820 +    }
   1.821 +				/* set internal date */
   1.822 +    if (!mail_parse_date (elt,db)) mm_log (datemsg,WARN);
   1.823 +
   1.824 +    curpos += s - tmp;		/* advance position after header */
   1.825 +    t = strchr (s,'\012');	/* start of next line */
   1.826 +				/* find start of next message */
   1.827 +    while (!(bezerk_valid_line (s,NIL,NIL))) {
   1.828 +      if (t) {			/* have next line? */
   1.829 +	t++;			/* advance to new line */
   1.830 +	curpos += t - s;	/* update position and size */
   1.831 +	elt->rfc822_size += ((t - s) + ((t[-2] == '\015') ? 0 : 1));
   1.832 +	s = t;			/* move to next line */
   1.833 +	t = strchr (s,'\012');
   1.834 +      }
   1.835 +      else {			/* try next buffer */
   1.836 +	j = strlen (s);		/* length of unread data in buffer */
   1.837 +	if ((i = sbuf.st_size - curpos) && (i != j)) {
   1.838 +				/* get to that position in the file */
   1.839 +	  lseek (LOCAL->fd,curpos,SEEK_SET);
   1.840 +				/* read another buffer's worth */
   1.841 +	  read (LOCAL->fd,s = tmp,j = (int) min (i,(long) MAILTMPLEN));
   1.842 +	  tmp[j] = '\0';	/* tie off buffer */
   1.843 +	  if (!(t = strchr (s,'\012'))) fatal ("Line too long in mailbox");
   1.844 +	}
   1.845 +	else {
   1.846 +	  curpos += j;		/* last bit of data */
   1.847 +	  elt->rfc822_size += j;
   1.848 +	  break;
   1.849 +	}
   1.850 +      }
   1.851 +    }
   1.852 +  }
   1.853 +				/* update parsed file size */
   1.854 +  LOCAL->filesize = sbuf.st_size;
   1.855 +  stream->silent = silent;	/* can pass up events now */
   1.856 +  mail_exists (stream,nmsgs);	/* notify upper level of new mailbox size */
   1.857 +  mail_recent (stream,recent);	/* and of change in recent messages */
   1.858 +  return T;			/* return the winnage */
   1.859 +}
   1.860 +
   1.861 +/* Berkeley locate header for a message
   1.862 + * Accepts: MAIL stream
   1.863 + *	    message number
   1.864 + *	    pointer to returned header size
   1.865 + * Returns: position of header in file
   1.866 + */
   1.867 +
   1.868 +unsigned long bezerk_hdrpos (MAILSTREAM *stream,unsigned long msgno,
   1.869 +			     unsigned long *size)
   1.870 +{
   1.871 +  long siz;
   1.872 +  size_t i = 0;
   1.873 +  char c = '\0';
   1.874 +  char *s;
   1.875 +  char tmp[MAILTMPLEN];
   1.876 +  MESSAGECACHE *elt = mail_elt (stream,msgno);
   1.877 +  long pos = elt->private.special.offset + elt->private.msg.full.offset;
   1.878 +				/* is size known? */
   1.879 +  if (!(*size = elt->private.msg.header.text.size)) {
   1.880 +				/* get to header position */
   1.881 +    lseek (LOCAL->fd,pos,SEEK_SET);
   1.882 +				/* search message for CRLF CRLF */
   1.883 +    for (siz = 1; siz <= elt->rfc822_size; siz++) {
   1.884 +      if (!i &&			/* buffer empty? */
   1.885 +	  (read (LOCAL->fd,s = tmp,
   1.886 +		 i = (size_t) min(elt->rfc822_size-siz,(long)MAILTMPLEN))<= 0))
   1.887 +	return pos;
   1.888 +      else i--;
   1.889 +				/* two newline sequence? */
   1.890 +      if ((c == '\012') && (*s == '\012')) {
   1.891 +				/* yes, note for later */
   1.892 +	elt->private.msg.header.text.size = (*size = siz);
   1.893 +	return pos;		/* return to caller */
   1.894 +      }
   1.895 +      else if ((c == '\012') && (*s == '\015')) {
   1.896 +				/* yes, note for later */
   1.897 +	elt->private.msg.header.text.size = (*size = siz + 1);
   1.898 +	return pos;		/* return to caller */
   1.899 +      }
   1.900 +      else c = *s++;		/* next character */
   1.901 +    }
   1.902 +  }
   1.903 +  return pos;			/* have position */
   1.904 +}