postpone.c

mutt-1.5.12 源代码。linux 下邮件接受的工具。

/*
 * Copyright (C) 1996-2002 Michael R. Elkins <[e-mail]>
 * Copyright (C) 1999-2000 Thomas Roessler <[e-mail]>
 * 
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation; either version 2 of the License, or
 *     (at your option) any later version.
 * 
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program; if not, write to the Free Software
 *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */ 

#if HAVE_CONFIG_H
# include "config.h"
#endif

#include "mutt.h"
#include "mutt_menu.h"
#include "rfc1524.h"
#include "mime.h"
#include "mailbox.h"
#include "mapping.h"
#include "sort.h"
#ifdef USE_IMAP
#include "mx.h"
#include "imap.h"
#endif
#include "mutt_crypt.h"

#include <ctype.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>

static struct mapping_t PostponeHelp[] = {
  { N_("Exit"),  OP_EXIT },
  { N_("Del"),   OP_DELETE },
  { N_("Undel"), OP_UNDELETE },
  { N_("Help"),  OP_HELP },
  { NULL }
};



static short PostCount = 0;
static CONTEXT *PostContext = NULL;
static short UpdateNumPostponed = 0;

/* Return the number of postponed messages.
 * if force is 0, use a cached value if it is costly to get a fresh
 * count (IMAP) - else check.
 */
int mutt_num_postponed (int force)
{
  struct stat st;
  CONTEXT ctx;

  static time_t LastModify = 0;
  static char *OldPostponed = NULL;

  if (UpdateNumPostponed)
  {
    UpdateNumPostponed = 0;
    force = 1;
  }

  if (Postponed != OldPostponed)
  {
    OldPostponed = Postponed;
    LastModify = 0;
    force = 1;
  }

  if (!Postponed)
    return 0;

#ifdef USE_IMAP
  /* LastModify is useless for IMAP */
  if (mx_is_imap (Postponed))
  {
    if (force)
    {
      short newpc;

      newpc = imap_status (Postponed, 0);
      if (newpc >= 0)
      {
	PostCount = newpc;
	dprint (2, (debugfile, "mutt_num_postponed: %d postponed IMAP messages found.\n", PostCount));
      }
      else
	dprint (2, (debugfile, "mutt_num_postponed: using old IMAP postponed count.\n"));
    }
    return PostCount;
  }
#endif

  if (stat (Postponed, &st) == -1)
  {
     PostCount = 0;
     LastModify = 0;
     return (0);
  }

  if (S_ISDIR (st.st_mode))
  {
    /* if we have a maildir mailbox, we need to stat the "new" dir */

    char buf[_POSIX_PATH_MAX];

    snprintf (buf, sizeof (buf), "%s/new", Postponed);
    if (access (buf, F_OK) == 0 && stat (buf, &st) == -1)
    {
      PostCount = 0;
      LastModify = 0;
      return 0;
    }
  }

  if (LastModify < st.st_mtime)
  {
    LastModify = st.st_mtime;

    if (access (Postponed, R_OK | F_OK) != 0)
      return (PostCount = 0);
    if (mx_open_mailbox (Postponed, M_NOSORT | M_QUIET, &ctx) == NULL)
      PostCount = 0;
    else
      PostCount = ctx.msgcount;
    mx_fastclose_mailbox (&ctx);
  }

  return (PostCount);
}

void mutt_update_num_postponed (void)
{
  UpdateNumPostponed = 1;
}

static void post_entry (char *s, size_t slen, MUTTMENU *menu, int entry)
{
  CONTEXT *ctx = (CONTEXT *) menu->data;

  _mutt_make_string (s, slen, NONULL (HdrFmt), ctx, ctx->hdrs[entry],
		     M_FORMAT_ARROWCURSOR);
}

static HEADER *select_msg (void)
{
  MUTTMENU *menu;
  int i, done=0, r=-1;
  char helpstr[SHORT_STRING];
  short orig_sort;

  menu = mutt_new_menu ();
  menu->make_entry = post_entry;
  menu->menu = MENU_POST;
  menu->max = PostContext->msgcount;
  menu->title = _("Postponed Messages");
  menu->data = PostContext;
  menu->help = mutt_compile_help (helpstr, sizeof (helpstr), MENU_POST, PostponeHelp);

  /* The postponed mailbox is setup to have sorting disabled, but the global
   * Sort variable may indicate something different.   Sorting has to be
   * disabled while the postpone menu is being displayed. */
  orig_sort = Sort;
  Sort = SORT_ORDER;
  
  while (!done)
  {
    switch (i = mutt_menuLoop (menu))
    {
      case OP_DELETE:
      case OP_UNDELETE:
	mutt_set_flag (PostContext, PostContext->hdrs[menu->current], M_DELETE, (i == OP_DELETE) ? 1 : 0);
	PostCount = PostContext->msgcount - PostContext->deleted;
	if (option (OPTRESOLVE) && menu->current < menu->max - 1)
	{
	  menu->oldcurrent = menu->current;
	  menu->current++;
	  if (menu->current >= menu->top + menu->pagelen)
	  {
	    menu->top = menu->current;
	    menu->redraw = REDRAW_INDEX | REDRAW_STATUS;
	  }
	  else
	    menu->redraw |= REDRAW_MOTION_RESYNCH;
	}
	else
	  menu->redraw = REDRAW_CURRENT;
	break;

      case OP_GENERIC_SELECT_ENTRY:
	r = menu->current;
	done = 1;
	break;

      case OP_EXIT:
	done = 1;
	break;
    }
  }

  Sort = orig_sort;
  mutt_menuDestroy (&menu);
  return (r > -1 ? PostContext->hdrs[r] : NULL);
}

/* args:
 *      ctx	Context info, used when recalling a message to which
 *              we reply.
 *	hdr	envelope/attachment info for recalled message
 *	cur	if message was a reply, `cur' is set to the message which
 *		`hdr' is in reply to
 *	fcc	fcc for the recalled message
 *	fcclen	max length of fcc
 *
 * return vals:
 *	-1		error/no messages
 *	0		normal exit
 *	SENDREPLY	recalled message is a reply
 */
int mutt_get_postponed (CONTEXT *ctx, HEADER *hdr, HEADER **cur, char *fcc, size_t fcclen)
{
  HEADER *h;
  int code = SENDPOSTPONED;
  LIST *tmp;
  LIST *last = NULL;
  LIST *next;
  char *p;
  int opt_delete;

  if (!Postponed)
    return (-1);

  if ((PostContext = mx_open_mailbox (Postponed, M_NOSORT, NULL)) == NULL)
  {
    PostCount = 0;
    mutt_error _("No postponed messages.");
    return (-1);
  }
  
  if (! PostContext->msgcount)
  {
    PostCount = 0;
    mx_close_mailbox (PostContext, NULL);
    FREE (&PostContext);
    mutt_error _("No postponed messages.");
    return (-1);
  }

  if (PostContext->msgcount == 1)
  {
    /* only one message, so just use that one. */
    h = PostContext->hdrs[0];
  }
  else if ((h = select_msg ()) == NULL)
  {
    mx_close_mailbox (PostContext, NULL);
    FREE (&PostContext);
    return (-1);
  }

  if (mutt_prepare_template (NULL, PostContext, hdr, h, 0) < 0)
  {
    mx_fastclose_mailbox (PostContext);
    FREE (&PostContext);
    return (-1);
  }

  /* finished with this message, so delete it. */
  mutt_set_flag (PostContext, h, M_DELETE, 1);

  /* update the count for the status display */
  PostCount = PostContext->msgcount - PostContext->deleted;

  /* avoid the "purge deleted messages" prompt */
  opt_delete = quadoption (OPT_DELETE);
  set_quadoption (OPT_DELETE, M_YES);
  mx_close_mailbox (PostContext, NULL);
  set_quadoption (OPT_DELETE, opt_delete);

  FREE (&PostContext);

  for (tmp = hdr->env->userhdrs; tmp; )
  {
    if (ascii_strncasecmp ("X-Mutt-References:", tmp->data, 18) == 0)
    {
      if (ctx)
      {
	/* if a mailbox is currently open, look to see if the orignal message
	   the user attempted to reply to is in this mailbox */
	p = tmp->data + 18;
	SKIPWS (p);
	if (!ctx->id_hash)
	  ctx->id_hash = mutt_make_id_hash (ctx);
	*cur = hash_find (ctx->id_hash, p);
      }

      /* Remove the X-Mutt-References: header field. */
      next = tmp->next;
      if (last)
	last->next = tmp->next;
      else
	hdr->env->userhdrs = tmp->next;
      tmp->next = NULL;
      mutt_free_list (&tmp);
      tmp = next;
      if (*cur)
	code |= SENDREPLY;
    }
    else if (ascii_strncasecmp ("X-Mutt-Fcc:", tmp->data, 11) == 0)
    {
      p = tmp->data + 11;
      SKIPWS (p);
      strfcpy (fcc, p, fcclen);
      mutt_pretty_mailbox (fcc);

      /* remove the X-Mutt-Fcc: header field */
      next = tmp->next;
      if (last)
	last->next = tmp->next;
      else
	hdr->env->userhdrs = tmp->next;
      tmp->next = NULL;
      mutt_free_list (&tmp);
      tmp = next;
    }
    else if ((WithCrypto & APPLICATION_PGP)
             && (mutt_strncmp ("Pgp:", tmp->data, 4) == 0 /* this is generated
						       * by old mutt versions
						       */
                 || mutt_strncmp ("X-Mutt-PGP:", tmp->data, 11) == 0))
    {
      hdr->security = mutt_parse_crypt_hdr (strchr (tmp->data, ':') + 1, 1,
					    APPLICATION_PGP);
      hdr->security |= APPLICATION_PGP;
       
      /* remove the pgp field */
      next = tmp->next;
      if (last)
	last->next = tmp->next;
      else
	hdr->env->userhdrs = tmp->next;
      tmp->next = NULL;
      mutt_free_list (&tmp);
      tmp = next;
    }
    else if ((WithCrypto & APPLICATION_SMIME)
             && mutt_strncmp ("X-Mutt-SMIME:", tmp->data, 13) == 0)
    {
      hdr->security = mutt_parse_crypt_hdr (strchr (tmp->data, ':') + 1, 1,
					    APPLICATION_SMIME);