commands.c

mutt-1.5.12 源代码。linux 下邮件接受的工具。

/*
 * Copyright (C) 1996-2000 Michael R. Elkins <[e-mail]>
 * Copyright (C) 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_curses.h"
#include "mutt_menu.h"
#include "mime.h"
#include "sort.h"
#include "mailbox.h"
#include "copy.h"
#include "mx.h"
#include "pager.h"
#include "mutt_crypt.h"
#include "mutt_idna.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#ifdef USE_IMAP
#include "imap.h"
#endif

#ifdef BUFFY_SIZE
#include "buffy.h"
#endif

#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <utime.h>


/* The folder the user last saved to.  Used by ci_save_message() */
static char LastSaveFolder[_POSIX_PATH_MAX] = "";

int mutt_display_message (HEADER *cur)
{
  char tempfile[_POSIX_PATH_MAX], buf[LONG_STRING];
  int rc = 0, builtin = 0;
  int cmflags = M_CM_DECODE | M_CM_DISPLAY | M_CM_CHARCONV;
  FILE *fpout = NULL;
  FILE *fpfilterout = NULL;
  pid_t filterpid = -1;
  int res;

  snprintf (buf, sizeof (buf), "%s/%s", TYPE (cur->content),
	    cur->content->subtype);

  mutt_parse_mime_message (Context, cur);
  mutt_message_hook (Context, cur, M_MESSAGEHOOK);

  /* see if crytpo is needed for this message.  if so, we should exit curses */
  if (WithCrypto && cur->security)
  {
    if (cur->security & ENCRYPT)
    {
      if (cur->security & APPLICATION_SMIME)
	crypt_smime_getkeys (cur->env);
      if(!crypt_valid_passphrase(cur->security))
	return 0;

      cmflags |= M_CM_VERIFY;
    }
    else if (cur->security & SIGN)
    {
      /* find out whether or not the verify signature */
      if (query_quadoption (OPT_VERIFYSIG, _("Verify PGP signature?")) == M_YES)
      {
	cmflags |= M_CM_VERIFY;
      }
    }
  }
  
  if (cmflags & M_CM_VERIFY || cur->security & ENCRYPT)
  {
    if (cur->security & APPLICATION_PGP)
    {
      if (cur->env->from)
        crypt_pgp_invoke_getkeys (cur->env->from);
      
      crypt_invoke_message (APPLICATION_PGP);
    }

    if (cur->security & APPLICATION_SMIME)
      crypt_invoke_message (APPLICATION_SMIME);
  }


  mutt_mktemp (tempfile);
  if ((fpout = safe_fopen (tempfile, "w")) == NULL)
  {
    mutt_error _("Could not create temporary file!");
    return (0);
  }

  if (DisplayFilter && *DisplayFilter) 
  {
    fpfilterout = fpout;
    fpout = NULL;
    /* mutt_endwin (NULL); */
    filterpid = mutt_create_filter_fd (DisplayFilter, &fpout, NULL, NULL,
				       -1, fileno(fpfilterout), -1);
    if (filterpid < 0)
    {
      mutt_error (_("Cannot create display filter"));
      safe_fclose (&fpfilterout);
      unlink (tempfile);
      return 0;
    }
  }

  if (!Pager || mutt_strcmp (Pager, "builtin") == 0)
    builtin = 1;
  else
  {
    mutt_make_string (buf, sizeof (buf), NONULL(PagerFmt), Context, cur);
    fputs (buf, fpout);
    fputs ("\n\n", fpout);
  }

  res = mutt_copy_message (fpout, Context, cur, cmflags,
       	(option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) | CH_DECODE | CH_FROM);
  if ((safe_fclose (&fpout) != 0 && errno != EPIPE) || res == -1)
  {
    mutt_error (_("Could not copy message"));
    if (fpfilterout != NULL)
    {
      mutt_wait_filter (filterpid);
      safe_fclose (&fpfilterout);
    }
    mutt_unlink (tempfile);
    return 0;
  }

  if (fpfilterout != NULL && mutt_wait_filter (filterpid) != 0)
    mutt_any_key_to_continue (NULL);

  safe_fclose (&fpfilterout);	/* XXX - check result? */

  
  if (WithCrypto)
  {
    /* update crypto information for this message */
    cur->security &= ~(GOODSIGN|BADSIGN);
    cur->security |= crypt_query (cur->content);
  
    /* Remove color cache for this message, in case there
       are color patterns for both ~g and ~V */
    cur->pair = 0;
  }

  if (builtin)
  {
    pager_t info;

    if (WithCrypto 
        && (cur->security & APPLICATION_SMIME) && (cmflags & M_CM_VERIFY))
    {
      if (cur->security & GOODSIGN)
      {
	if (!crypt_smime_verify_sender(cur))
	  mutt_message ( _("S/MIME signature successfully verified."));
	else
	  mutt_error ( _("S/MIME certificate owner does not match sender."));
      }
      else if (cur->security & PARTSIGN)
	mutt_message (_("Warning: Part of this message has not been signed."));
      else if (cur->security & SIGN || cur->security & BADSIGN)
	mutt_error ( _("S/MIME signature could NOT be verified."));
    }

    if (WithCrypto 
        && (cur->security & APPLICATION_PGP) && (cmflags & M_CM_VERIFY))
    {
      if (cur->security & GOODSIGN)
	mutt_message (_("PGP signature successfully verified."));
      else if (cur->security & PARTSIGN)
	mutt_message (_("Warning: Part of this message has not been signed."));
      else if (cur->security & SIGN)
	mutt_message (_("PGP signature could NOT be verified."));
    }

    /* Invoke the builtin pager */
    memset (&info, 0, sizeof (pager_t));
    info.hdr = cur;
    info.ctx = Context;
    rc = mutt_pager (NULL, tempfile, M_PAGER_MESSAGE, &info);
  }
  else
  {
    int r;

    mutt_endwin (NULL);
    snprintf (buf, sizeof (buf), "%s %s", NONULL(Pager), tempfile);
    if ((r = mutt_system (buf)) == -1)
      mutt_error (_("Error running \"%s\"!"), buf);
    unlink (tempfile);
    keypad (stdscr, TRUE);
    if (r != -1)
      mutt_set_flag (Context, cur, M_READ, 1);
    if (r != -1 && option (OPTPROMPTAFTER))
    {
      mutt_ungetch (mutt_any_key_to_continue _("Command: "), 0);
      rc = km_dokey (MENU_PAGER);
    }
    else
      rc = 0;
  }

  return rc;
}

void ci_bounce_message (HEADER *h, int *redraw)
{
  char prompt[SHORT_STRING];
  char buf[HUGE_STRING] = { 0 };
  ADDRESS *adr = NULL;
  char *err = NULL;
  int rc;

  if(h)
    strfcpy(prompt, _("Bounce message to: "), sizeof(prompt));
  else
    strfcpy(prompt, _("Bounce tagged messages to: "), sizeof(prompt));
  
  rc = mutt_get_field (prompt, buf, sizeof (buf), M_ALIAS);

  if (option (OPTNEEDREDRAW))
  {
    unset_option (OPTNEEDREDRAW);
    *redraw = REDRAW_FULL;
  }

  if (rc || !buf[0])
    return;

  if (!(adr = rfc822_parse_adrlist (adr, buf)))
  {
    mutt_error _("Error parsing address!");
    return;
  }

  adr = mutt_expand_aliases (adr);

  if (mutt_addrlist_to_idna (adr, &err) < 0)
  {
    mutt_error (_("Bad IDN: '%s'"), err);
    FREE (&err);
    rfc822_free_address (&adr);
    return;
  }

  buf[0] = 0;
  rfc822_write_address (buf, sizeof (buf), adr, 1);

#define extra_space (15 + 7 + 2)
  snprintf (prompt, sizeof (prompt),
           (h ? _("Bounce message to %s") : _("Bounce messages to %s")), buf);

  if (mutt_strwidth (prompt) > COLS - extra_space)
  {
    mutt_format_string (prompt, sizeof (prompt),
			0, COLS-extra_space, 0, 0,
			prompt, sizeof (prompt), 0);
    safe_strcat (prompt, sizeof (prompt), "...?");
  }
  else
    safe_strcat (prompt, sizeof (prompt), "?");

  if (query_quadoption (OPT_BOUNCE, prompt) != M_YES)
  {
    rfc822_free_address (&adr);
    CLEARLINE (LINES - 1);
    mutt_message (h ? _("Message not bounced.") : _("Messages not bounced."));
    return;
  }

  CLEARLINE (LINES - 1);
  
  rc = mutt_bounce_message (NULL, h, adr);
  rfc822_free_address (&adr);
  /* If no error, or background, display message. */
  if ((rc == 0) || (rc == S_BKG))
    mutt_message (h ? _("Message bounced.") : _("Messages bounced."));
}

static void pipe_set_flags (int decode, int print, int *cmflags, int *chflags)
{
  if (decode)
  {
    *cmflags |= M_CM_DECODE | M_CM_CHARCONV;
    *chflags |= CH_DECODE | CH_REORDER;
    
    if (option (OPTWEED))
    {
      *chflags |= CH_WEED;
      *cmflags |= M_CM_WEED;
    }
  }
  
  if (print)
    *cmflags |= M_CM_PRINTING;
  
}

static void pipe_msg (HEADER *h, FILE *fp, int decode, int print)
{
  int cmflags = 0;
  int chflags = CH_FROM;
  
  pipe_set_flags (decode, print, &cmflags, &chflags);

  if (WithCrypto && decode && h->security & ENCRYPT)
  {
    if(!crypt_valid_passphrase(h->security))
      return;
    endwin ();
  }

  if (decode)
    mutt_parse_mime_message (Context, h);

  mutt_copy_message (fp, Context, h, cmflags, chflags);
}


/* the following code is shared between printing and piping */

static int _mutt_pipe_message (HEADER *h, char *cmd,
			       int decode,
			       int print,
			       int split,
			       char *sep)
{
  
  int i, rc = 0;
  pid_t thepid;
  FILE *fpout;
  
/*   mutt_endwin (NULL); 

     is this really needed here ? 
     it makes the screen flicker on pgp and s/mime messages,
     before asking for a passphrase...
                                     Oliver Ehli */
  if (h)
  {

    mutt_message_hook (Context, h, M_MESSAGEHOOK);

    if (WithCrypto && decode)
    {
      mutt_parse_mime_message (Context, h);
      if(h->security & ENCRYPT && !crypt_valid_passphrase(h->security))
	return 1;
    }
    mutt_endwin (NULL);

    if ((thepid = mutt_create_filter (cmd, &fpout, NULL, NULL)) < 0)
    {
      mutt_perror _("Can't create filter process");
      return 1;
    }
      
    pipe_msg (h, fpout, decode, print);
    fclose (fpout);
    rc = mutt_wait_filter (thepid);
  }
  else
  { /* handle tagged messages */

    if (WithCrypto && decode)
    {
      for (i = 0; i < Context->vcount; i++)
	if(Context->hdrs[Context->v2r[i]]->tagged)
	{
	  mutt_message_hook (Context, Context->hdrs[Context->v2r[i]], M_MESSAGEHOOK);
	  mutt_parse_mime_message(Context, Context->hdrs[Context->v2r[i]]);
	  if (Context->hdrs[Context->v2r[i]]->security & ENCRYPT &&
	      !crypt_valid_passphrase(Context->hdrs[Context->v2r[i]]->security))
	    return 1;
	}
    }
    
    if (split)
    {
      for (i = 0; i < Context->vcount; i++)
      {
        if (Context->hdrs[Context->v2r[i]]->tagged)
        {
	  mutt_message_hook (Context, Context->hdrs[Context->v2r[i]], M_MESSAGEHOOK);
	  mutt_endwin (NULL);
	  if ((thepid = mutt_create_filter (cmd, &fpout, NULL, NULL)) < 0)
	  {
	    mutt_perror _("Can't create filter process");
	    return 1;
	  }
          pipe_msg (Context->hdrs[Context->v2r[i]], fpout, decode, print);
          /* add the message separator */
          if (sep)  fputs (sep, fpout);
	  safe_fclose (&fpout);
	  if (mutt_wait_filter (thepid) != 0)
	    rc = 1;
        }
      }
    }
    else
    {
      mutt_endwin (NULL);
      if ((thepid = mutt_create_filter (cmd, &fpout, NULL, NULL)) < 0)
      {
	mutt_perror _("Can't create filter process");
	return 1;
      }
      for (i = 0; i < Context->vcount; i++)
      {
        if (Context->hdrs[Context->v2r[i]]->tagged)
        {
	  mutt_message_hook (Context, Context->hdrs[Context->v2r[i]], M_MESSAGEHOOK);
          pipe_msg (Context->hdrs[Context->v2r[i]], fpout, decode, print);
          /* add the message separator */
          if (sep) fputs (sep, fpout);
        }
      }
      safe_fclose (&fpout);
      if (mutt_wait_filter (thepid) != 0)
	rc = 1;
    }
  }

  if (rc || option (OPTWAITKEY))
    mutt_any_key_to_continue (NULL);
  return rc;
}

void mutt_pipe_message (HEADER *h)
{
  char buffer[LONG_STRING];

  buffer[0] = 0;
  if (mutt_get_field (_("Pipe to command: "), buffer, sizeof (buffer), M_CMD)
      != 0 || !buffer[0])
    return;

  mutt_expand_path (buffer, sizeof (buffer));
  _mutt_pipe_message (h, buffer,
		      option (OPTPIPEDECODE),
		      0, 
		      option (OPTPIPESPLIT),
		      PipeSep);
}

void mutt_print_message (HEADER *h)
{

  if (quadoption (OPT_PRINT) && (!PrintCmd || !*PrintCmd))
  {
    mutt_message (_("No printing command has been defined."));
    return;
  }
  
  if (query_quadoption (OPT_PRINT,
			h ? _("Print message?") : _("Print tagged messages?"))
		  	!= M_YES)
    return;

  if (_mutt_pipe_message (h, PrintCmd,
			  option (OPTPRINTDECODE),
			  1,
			  option (OPTPRINTSPLIT),
			  "\f") == 0)
    mutt_message (h ? _("Message printed") : _("Messages printed"));
  else
    mutt_message (h ? _("Message could not be printed") :
		  _("Messages could not be printed"));
}


int mutt_select_sort (int reverse)
{