init.c 73.9 KB
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/*
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 * Copyright (C) 1996-2002 Michael R. Elkins <[email protected]>
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 * 
 *     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
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 *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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 */ 

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

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#include "mutt.h"
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#include "mapping.h"
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#include "mutt_curses.h"
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#include "mutt_menu.h"
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#include "mutt_regex.h"
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#include "history.h"
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#include "keymap.h"
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#include "mbyte.h"
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#include "charset.h"
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#include "mutt_crypt.h"
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#include "mutt_idna.h"
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#if defined(USE_SSL)
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#include "mutt_ssl.h"
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#endif


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#include "mx.h"
#include "init.h"
#include "mailbox.h"

#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/utsname.h>
#include <errno.h>
#include <sys/wait.h>

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#define CHECK_PAGER \
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  if ((CurrentMenu == MENU_PAGER) && (idx >= 0) &&	\
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	    (MuttVars[idx].flags & R_RESORT)) \
	{ \
	  snprintf (err->data, err->dsize, \
	    _("Not available in this menu.")); \
	  return (-1); \
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	}
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typedef struct myvar
{
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  char *name;
  char *value;
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  struct myvar* next;
} myvar_t;

static myvar_t* MyVars;

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static int var_to_string (int idx, char* val, size_t len);

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static void myvar_set (const char* var, const char* val);
static const char* myvar_get (const char* var);
static void myvar_del (const char* var);

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static void toggle_quadoption (int opt)
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{
  int n = opt/4;
  int b = (opt % 4) * 2;

  QuadOptions[n] ^= (1 << b);
}
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void set_quadoption (int opt, int flag)
{
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  int n = opt/4;
  int b = (opt % 4) * 2;

  QuadOptions[n] &= ~(0x3 << b);
  QuadOptions[n] |= (flag & 0x3) << b;
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}

int quadoption (int opt)
{
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  int n = opt/4;
  int b = (opt % 4) * 2;

  return (QuadOptions[n] >> b) & 0x3;
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}

int query_quadoption (int opt, const char *prompt)
{
  int v = quadoption (opt);

  switch (v)
  {
    case M_YES:
    case M_NO:
      return (v);

    default:
      v = mutt_yesorno (prompt, (v == M_ASKYES));
      CLEARLINE (LINES - 1);
      return (v);
  }

  /* not reached */
}

/* given the variable ``s'', return the index into the rc_vars array which
   matches, or -1 if the variable is not found.  */
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static int mutt_option_index (char *s)
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{
  int i;

  for (i = 0; MuttVars[i].option; i++)
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    if (mutt_strcmp (s, MuttVars[i].option) == 0)
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      return (MuttVars[i].type == DT_SYN ?  mutt_option_index ((char *) MuttVars[i].data) : i);
  return (-1);
}

int mutt_extract_token (BUFFER *dest, BUFFER *tok, int flags)
{
  char		ch;
  char		qc = 0; /* quote char */
  char		*pc;

  /* reset the destination pointer to the beginning of the buffer */
  dest->dptr = dest->data;

  SKIPWS (tok->dptr);
  while ((ch = *tok->dptr))
  {
    if (!qc)
    {
      if ((ISSPACE (ch) && !(flags & M_TOKEN_SPACE)) ||
	  (ch == '#' && !(flags & M_TOKEN_COMMENT)) ||
	  (ch == '=' && (flags & M_TOKEN_EQUAL)) ||
	  (ch == ';' && !(flags & M_TOKEN_SEMICOLON)) ||
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	  ((flags & M_TOKEN_PATTERN) && strchr ("~%=!|", ch)))
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	break;
    }

    tok->dptr++;

    if (ch == qc)
      qc = 0; /* end of quote */
    else if (!qc && (ch == '\'' || ch == '"') && !(flags & M_TOKEN_QUOTE))
      qc = ch;
    else if (ch == '\\' && qc != '\'')
    {
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	if (!*tok->dptr)
	    return -1; /* premature end of token */
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      switch (ch = *tok->dptr++)
      {
	case 'c':
	case 'C':
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	    if (!*tok->dptr)
		return -1; /* premature end of token */
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	  mutt_buffer_addch (dest, (toupper ((unsigned char) *tok->dptr)
                                    - '@') & 0x7f);
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	  tok->dptr++;
	  break;
	case 'r':
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	  mutt_buffer_addch (dest, '\r');
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	  break;
	case 'n':
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	  mutt_buffer_addch (dest, '\n');
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	  break;
	case 't':
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	  mutt_buffer_addch (dest, '\t');
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	  break;
	case 'f':
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	  mutt_buffer_addch (dest, '\f');
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	  break;
	case 'e':
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	  mutt_buffer_addch (dest, '\033');
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	  break;
	default:
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	  if (isdigit ((unsigned char) ch) &&
	      isdigit ((unsigned char) *tok->dptr) &&
	      isdigit ((unsigned char) *(tok->dptr + 1)))
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	  {

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	    mutt_buffer_addch (dest, (ch << 6) + (*tok->dptr << 3) + *(tok->dptr + 1) - 3504);
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	    tok->dptr += 2;
	  }
	  else
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	    mutt_buffer_addch (dest, ch);
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      }
    }
    else if (ch == '^' && (flags & M_TOKEN_CONDENSE))
    {
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	if (!*tok->dptr)
	    return -1; /* premature end of token */
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      ch = *tok->dptr++;
      if (ch == '^')
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	mutt_buffer_addch (dest, ch);
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      else if (ch == '[')
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	mutt_buffer_addch (dest, '\033');
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      else if (isalpha ((unsigned char) ch))
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	mutt_buffer_addch (dest, toupper ((unsigned char) ch) - '@');
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      else
      {
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	mutt_buffer_addch (dest, '^');
	mutt_buffer_addch (dest, ch);
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      }
    }
    else if (ch == '`' && (!qc || qc == '"'))
    {
      FILE	*fp;
      pid_t	pid;
      char	*cmd, *ptr;
      size_t	expnlen;
      BUFFER	expn;
      int	line = 0;

      pc = tok->dptr;
      do {
	if ((pc = strpbrk (pc, "\\`")))
	{
	  /* skip any quoted chars */
	  if (*pc == '\\')
	    pc += 2;
	}
      } while (pc && *pc != '`');
      if (!pc)
      {
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	dprint (1, (debugfile, "mutt_get_token: mismatched backticks\n"));
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	return (-1);
      }
      cmd = mutt_substrdup (tok->dptr, pc);
      if ((pid = mutt_create_filter (cmd, NULL, &fp, NULL)) < 0)
      {
	dprint (1, (debugfile, "mutt_get_token: unable to fork command: %s", cmd));
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	FREE (&cmd);
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	return (-1);
      }
      FREE (&cmd);

      tok->dptr = pc + 1;

      /* read line */
      memset (&expn, 0, sizeof (expn));
      expn.data = mutt_read_line (NULL, &expn.dsize, fp, &line);
      fclose (fp);
      mutt_wait_filter (pid);

      /* if we got output, make a new string consiting of the shell ouptput
	 plus whatever else was left on the original line */
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      /* BUT: If this is inside a quoted string, directly add output to 
       * the token */
      if (expn.data && qc)
      {
	mutt_buffer_addstr (dest, expn.data);
	FREE (&expn.data);
      }
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      else if (expn.data)
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      {
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	expnlen = mutt_strlen (expn.data);
	tok->dsize = expnlen + mutt_strlen (tok->dptr) + 1;
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	ptr = safe_malloc (tok->dsize);
	memcpy (ptr, expn.data, expnlen);
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	strcpy (ptr + expnlen, tok->dptr);	/* __STRCPY_CHECKED__ */
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	if (tok->destroy)
	  FREE (&tok->data);
	tok->data = ptr;
	tok->dptr = ptr;
	tok->destroy = 1; /* mark that the caller should destroy this data */
	ptr = NULL;
	FREE (&expn.data);
      }
    }
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    else if (ch == '$' && (!qc || qc == '"') && (*tok->dptr == '{' || isalpha ((unsigned char) *tok->dptr)))
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    {
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      const char *env = NULL;
      char *var = NULL;
      int idx;
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      if (*tok->dptr == '{')
      {
	tok->dptr++;
	if ((pc = strchr (tok->dptr, '}')))
	{
	  var = mutt_substrdup (tok->dptr, pc);
	  tok->dptr = pc + 1;
	}
      }
      else
      {
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	for (pc = tok->dptr; isalnum ((unsigned char) *pc) || *pc == '_'; pc++)
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	  ;
	var = mutt_substrdup (tok->dptr, pc);
	tok->dptr = pc;
      }
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      if (var)
      {
        if ((env = getenv (var)) || (env = myvar_get (var)))
          mutt_buffer_addstr (dest, env);
        else if ((idx = mutt_option_index (var)) != -1)
        {
          /* expand settable mutt variables */
          char val[LONG_STRING];

          if (var_to_string (idx, val, sizeof (val)))
            mutt_buffer_addstr (dest, val);
        }
        FREE (&var);
      }
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    }
    else
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      mutt_buffer_addch (dest, ch);
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  }
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  mutt_buffer_addch (dest, 0); /* terminate the string */
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  SKIPWS (tok->dptr);
  return 0;
}

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static void mutt_free_opt (struct option_t* p)
{
  REGEXP* pp;

  switch (p->type & DT_MASK)
  {
  case DT_ADDR:
    rfc822_free_address ((ADDRESS**)p->data);
    break;
  case DT_RX:
    pp = (REGEXP*)p->data;
    FREE (&pp->pattern);
    if (pp->rx)
    {
      regfree (pp->rx);
      FREE (&pp->rx);
    }
    break;
  case DT_PATH:
  case DT_STR:
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    FREE ((char**)p->data);		/* __FREE_CHECKED__ */
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    break;
  }
}

/* clean up before quitting */
void mutt_free_opts (void)
{
  int i;

  for (i = 0; MuttVars[i].option; i++)
    mutt_free_opt (MuttVars + i);

  mutt_free_rx_list (&Alternates);
  mutt_free_rx_list (&UnAlternates);
  mutt_free_rx_list (&MailLists);
  mutt_free_rx_list (&UnMailLists);
  mutt_free_rx_list (&SubscribedLists);
  mutt_free_rx_list (&UnSubscribedLists);
  mutt_free_rx_list (&NoSpamList);
}

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static void add_to_list (LIST **list, const char *str)
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{
  LIST *t, *last = NULL;

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  /* don't add a NULL or empty string to the list */
  if (!str || *str == '\0')
    return;

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  /* check to make sure the item is not already on this list */
  for (last = *list; last; last = last->next)
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  {
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    if (ascii_strcasecmp (str, last->data) == 0)
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    {
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      /* already on the list, so just ignore it */
      last = NULL;
      break;
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    }
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    if (!last->next)
      break;
  }
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  if (!*list || last)
  {
    t = (LIST *) safe_calloc (1, sizeof (LIST));
    t->data = safe_strdup (str);
    if (last)
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    {
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      last->next = t;
      last = last->next;
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    }
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    else
      *list = last = t;
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  }
}

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int mutt_add_to_rx_list (RX_LIST **list, const char *s, int flags, BUFFER *err)
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{
  RX_LIST *t, *last = NULL;
  REGEXP *rx;

  if (!s || !*s)
    return 0;

  if (!(rx = mutt_compile_regexp (s, flags)))
  {
    snprintf (err->data, err->dsize, "Bad regexp: %s\n", s);
    return -1;
  }

  /* check to make sure the item is not already on this list */
  for (last = *list; last; last = last->next)
  {
    if (ascii_strcasecmp (rx->pattern, last->rx->pattern) == 0)
    {
      /* already on the list, so just ignore it */
      last = NULL;
      break;
    }
    if (!last->next)
      break;
  }

  if (!*list || last)
  {
    t = mutt_new_rx_list();
    t->rx = rx;
    if (last)
    {
      last->next = t;
      last = last->next;
    }
    else
      *list = last = t;
  }
  else /* duplicate */
    mutt_free_regexp (&rx);

  return 0;
}

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static int remove_from_spam_list (SPAM_LIST **list, const char *pat);
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static int add_to_spam_list (SPAM_LIST **list, const char *pat, const char *templ, BUFFER *err)
{
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  SPAM_LIST *t = NULL, *last = NULL;
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  REGEXP *rx;
  int n;
  const char *p;

  if (!pat || !*pat || !templ)
    return 0;

  if (!(rx = mutt_compile_regexp (pat, REG_ICASE)))
  {
    snprintf (err->data, err->dsize, _("Bad regexp: %s"), pat);
    return -1;
  }

  /* check to make sure the item is not already on this list */
  for (last = *list; last; last = last->next)
  {
    if (ascii_strcasecmp (rx->pattern, last->rx->pattern) == 0)
    {
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      /* Already on the list. Formerly we just skipped this case, but
       * now we're supporting removals, which means we're supporting
       * re-adds conceptually. So we probably want this to imply a
       * removal, then do an add. We can achieve the removal by freeing
       * the template, and leaving t pointed at the current item.
       */
      t = last;
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      FREE(&t->template);
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      break;
    }
    if (!last->next)
      break;
  }

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  /* If t is set, it's pointing into an extant SPAM_LIST* that we want to
   * update. Otherwise we want to make a new one to link at the list's end.
   */
  if (!t)
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  {
    t = mutt_new_spam_list();
    t->rx = rx;
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    if (last)
      last->next = t;
    else
      *list = t;
  }
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  /* Now t is the SPAM_LIST* that we want to modify. It is prepared. */
  t->template = safe_strdup(templ);

  /* Find highest match number in template string */
  t->nmatch = 0;
  for (p = templ; *p;)
  {
    if (*p == '%')
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    {
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        n = atoi(++p);
        if (n > t->nmatch)
          t->nmatch = n;
        while (*p && isdigit((int)*p))
          ++p;
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    }
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    else
        ++p;
  }
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  if (t->nmatch > t->rx->rx->re_nsub)
  {
    snprintf (err->data, err->dsize, _("Not enough subexpressions for spam "
                                       "template"));
    remove_from_spam_list(list, pat);
    return -1;
  }

  t->nmatch++;         /* match 0 is always the whole expr */
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  return 0;
}

static int remove_from_spam_list (SPAM_LIST **list, const char *pat)
{
  SPAM_LIST *spam, *prev;
  int nremoved = 0;

  /* Being first is a special case. */
  spam = *list;
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  if (!spam)
    return 0;
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  if (spam->rx && !mutt_strcmp(spam->rx->pattern, pat))
  {
    *list = spam->next;
    mutt_free_regexp(&spam->rx);
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    FREE(&spam->template);
    FREE(&spam);
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    return 1;
  }

  prev = spam;
  for (spam = prev->next; spam;)
  {
    if (!mutt_strcmp(spam->rx->pattern, pat))
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    {
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      prev->next = spam->next;
      mutt_free_regexp(&spam->rx);
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      FREE(&spam->template);
      FREE(&spam);
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      spam = prev->next;
      ++nremoved;
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    }
    else
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      spam = spam->next;
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  }

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  return nremoved;
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}


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static void remove_from_list (LIST **l, const char *str)
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{
  LIST *p, *last = NULL;

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  if (mutt_strcmp ("*", str) == 0)
    mutt_free_list (l);    /* ``unCMD *'' means delete all current entries */
  else
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  {
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    p = *l;
    last = NULL;
    while (p)
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    {
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      if (ascii_strcasecmp (str, p->data) == 0)
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      {
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	FREE (&p->data);
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	if (last)
	  last->next = p->next;
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	else
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	  (*l) = p->next;
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	FREE (&p);
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      }
      else
      {
	last = p;
	p = p->next;
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      }
    }
  }
}

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static int remove_from_rx_list (RX_LIST **l, const char *str)
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{
  RX_LIST *p, *last = NULL;
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  int rv = -1;
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  if (mutt_strcmp ("*", str) == 0)
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  {
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    mutt_free_rx_list (l);    /* ``unCMD *'' means delete all current entries */
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    rv = 0;
  }
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  else
  {
    p = *l;
    last = NULL;
    while (p)
    {
      if (ascii_strcasecmp (str, p->rx->pattern) == 0)
      {
	mutt_free_regexp (&p->rx);
	if (last)
	  last->next = p->next;
	else
	  (*l) = p->next;
	FREE (&p);
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	rv = 0;
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      }
      else
      {
	last = p;
	p = p->next;
      }
    }
  }
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  return (rv);
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}

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static int parse_unignore (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  do
  {
    mutt_extract_token (buf, s, 0);
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    /* don't add "*" to the unignore list */
    if (strcmp (buf->data, "*")) 
      add_to_list (&UnIgnore, buf->data);

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    remove_from_list (&Ignore, buf->data);
  }
  while (MoreArgs (s));

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  return 0;
}

static int parse_ignore (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  do
  {
    mutt_extract_token (buf, s, 0);
    remove_from_list (&UnIgnore, buf->data);
    add_to_list (&Ignore, buf->data);
  }
  while (MoreArgs (s));

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  return 0;
}

static int parse_list (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  do
  {
    mutt_extract_token (buf, s, 0);
    add_to_list ((LIST **) data, buf->data);
  }
  while (MoreArgs (s));

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  return 0;
}

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static void _alternates_clean (void)
{
  int i;
  if (Context && Context->msgcount) 
  {
    for (i = 0; i < Context->msgcount; i++)
      Context->hdrs[i]->recip_valid = 0;
  }
}

static int parse_alternates (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  group_context_t *gc = NULL;
  
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  _alternates_clean();
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  do
  {
    mutt_extract_token (buf, s, 0);
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    if (parse_group_context (&gc, buf, s, data, err) == -1)
      goto bail;

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    remove_from_rx_list (&UnAlternates, buf->data);

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    if (mutt_add_to_rx_list (&Alternates, buf->data, REG_ICASE, err) != 0)
      goto bail;

    if (mutt_group_context_add_rx (gc, buf->data, REG_ICASE, err) != 0)
      goto bail;
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  }
  while (MoreArgs (s));
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  mutt_group_context_destroy (&gc);
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  return 0;
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 bail:
  mutt_group_context_destroy (&gc);
  return -1;
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}

static int parse_unalternates (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  _alternates_clean();
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  do
  {
    mutt_extract_token (buf, s, 0);
    remove_from_rx_list (&Alternates, buf->data);

    if (mutt_strcmp (buf->data, "*") &&
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	mutt_add_to_rx_list (&UnAlternates, buf->data, REG_ICASE, err) != 0)
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      return -1;

  }
  while (MoreArgs (s));

  return 0;
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}

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static int parse_spam_list (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  BUFFER templ;

  memset(&templ, 0, sizeof(templ));

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  /* Insist on at least one parameter */
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  if (!MoreArgs(s))
  {
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    if (data == M_SPAM)
      strfcpy(err->data, _("spam: no matching pattern"), err->dsize);
    else
      strfcpy(err->data, _("nospam: no matching pattern"), err->dsize);
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    return -1;
  }
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  /* Extract the first token, a regexp */
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  mutt_extract_token (buf, s, 0);

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  /* data should be either M_SPAM or M_NOSPAM. M_SPAM is for spam commands. */
  if (data == M_SPAM)
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  {
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    /* If there's a second parameter, it's a template for the spam tag. */
    if (MoreArgs(s))
    {
      mutt_extract_token (&templ, s, 0);

      /* Add to the spam list. */
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      if (add_to_spam_list (&SpamList, buf->data, templ.data, err) != 0) {
	  FREE(&templ.data);
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          return -1;
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      }
      FREE(&templ.data);
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    }

    /* If not, try to remove from the nospam list. */
    else
    {
      remove_from_rx_list(&NoSpamList, buf->data);
    }

    return 0;
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  }
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  /* M_NOSPAM is for nospam commands. */
  else if (data == M_NOSPAM)
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  {
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    /* nospam only ever has one parameter. */
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    /* "*" is a special case. */
    if (!mutt_strcmp(buf->data, "*"))
    {
      mutt_free_spam_list (&SpamList);
      mutt_free_rx_list (&NoSpamList);
      return 0;
    }

    /* If it's on the spam list, just remove it. */
    if (remove_from_spam_list(&SpamList, buf->data) != 0)
      return 0;

    /* Otherwise, add it to the nospam list. */
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    if (mutt_add_to_rx_list (&NoSpamList, buf->data, REG_ICASE, err) != 0)
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      return -1;
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    return 0;
  }

  /* This should not happen. */
  strfcpy(err->data, "This is no good at all.", err->dsize);
  return -1;
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}

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static int parse_unlist (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  do
  {
    mutt_extract_token (buf, s, 0);
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    /*
     * Check for deletion of entire list
     */
    if (mutt_strcmp (buf->data, "*") == 0)
    {
      mutt_free_list ((LIST **) data);
      break;
    }
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    remove_from_list ((LIST **) data, buf->data);
  }
  while (MoreArgs (s));

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  return 0;
}

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static int parse_lists (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  group_context_t *gc = NULL;

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  do
  {
    mutt_extract_token (buf, s, 0);
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    if (parse_group_context (&gc, buf, s, data, err) == -1)
      goto bail;
    
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    remove_from_rx_list (&UnMailLists, buf->data);
    
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    if (mutt_add_to_rx_list (&MailLists, buf->data, REG_ICASE, err) != 0)
      goto bail;
    
    if (mutt_group_context_add_rx (gc, buf->data, REG_ICASE, err) != 0)
      goto bail;
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  }
  while (MoreArgs (s));

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  mutt_group_context_destroy (&gc);
  return 0;
  
 bail:
  mutt_group_context_destroy (&gc);
  return -1;
}

typedef enum group_state_t {
  NONE, RX, ADDR
} group_state_t;

static int parse_group (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  group_context_t *gc = NULL;
  group_state_t state = NONE;
  ADDRESS *addr = NULL;
  char *estr = NULL;
  
  do 
  {
    mutt_extract_token (buf, s, 0);
    if (parse_group_context (&gc, buf, s, data, err) == -1)
      goto bail;
    
    if (!mutt_strcasecmp (buf->data, "-rx"))
      state = RX;
    else if (!mutt_strcasecmp (buf->data, "-addr"))
      state = ADDR;
    else 
    {
      switch (state) 
      {
	case NONE:
	  strfcpy (err->data, _("Missing -rx or -addr."), err->dsize);
	  goto bail;
	
	case RX:
	  if (mutt_group_context_add_rx (gc, buf->data, REG_ICASE, err) != 0)
	    goto bail;
	  break;
	
	case ADDR:
	  if ((addr = mutt_parse_adrlist (NULL, buf->data)) == NULL)
	    goto bail;
	  if (mutt_addrlist_to_idna (addr, &estr)) 
	  {
	    snprintf (err->data, err->dsize, _("Warning: Bad IDN '%s'.\n"),
		      estr);
	    goto bail;
	  }
	  mutt_group_context_add_adrlist (gc, addr);
	  rfc822_free_address (&addr);
	  break;
      }
    }
  } while (MoreArgs (s));

  mutt_group_context_destroy (&gc);
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  return 0;
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  bail:
  mutt_group_context_destroy (&gc);
  return -1;
}

static int parse_ungroup (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  strfcpy (err->data, "not implemented", err->dsize);
  return -1;
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}
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/* always wise to do what someone else did before */
static void _attachments_clean (void)
{
  int i;
  if (Context && Context->msgcount) 
  {
    for (i = 0; i < Context->msgcount; i++)
      Context->hdrs[i]->attach_valid = 0;
  }
}

static int parse_attach_list (BUFFER *buf, BUFFER *s, LIST **ldata, BUFFER *err)
{
  ATTACH_MATCH *a;
  LIST *listp, *lastp;
  char *p;
  char *tmpminor;
  int len;

  /* Find the last item in the list that data points to. */
  lastp = NULL;
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  dprint(5, (debugfile, "parse_attach_list: ldata = %p, *ldata = %p\n",
	      (void *)ldata, (void *)*ldata));
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  for (listp = *ldata; listp; listp = listp->next)
  {
    a = (ATTACH_MATCH *)listp->data;
    dprint(5, (debugfile, "parse_attach_list: skipping %s/%s\n",
		a->major, a->minor));
    lastp = listp;
  }

  do
  {
    mutt_extract_token (buf, s, 0);

    if (!buf->data || *buf->data == '\0')
      continue;
   
    a = safe_malloc(sizeof(ATTACH_MATCH));

    /* some cheap hacks that I expect to remove */
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    if (!ascii_strcasecmp(buf->data, "any"))
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      a->major = safe_strdup("*/.*");
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    else if (!ascii_strcasecmp(buf->data, "none"))
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      a->major = safe_strdup("cheap_hack/this_should_never_match");
    else
      a->major = safe_strdup(buf->data);

    if ((p = strchr(a->major, '/')))
    {
      *p = '\0';
      ++p;
      a->minor = p;
    }
    else
    {
      a->minor = "unknown";
    }

    len = strlen(a->minor);
    tmpminor = safe_malloc(len+3);
    strcpy(&tmpminor[1], a->minor); /* __STRCPY_CHECKED__ */
    tmpminor[0] = '^';
    tmpminor[len+1] = '$';
    tmpminor[len+2] = '\0';

    a->major_int = mutt_check_mime_type(a->major);
    regcomp(&a->minor_rx, tmpminor, REG_ICASE|REG_EXTENDED);

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    FREE(&tmpminor);
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    dprint(5, (debugfile, "parse_attach_list: added %s/%s [%d]\n",
		a->major, a->minor, a->major_int));

    listp = safe_malloc(sizeof(LIST));
    listp->data = (char *)a;
    listp->next = NULL;
    if (lastp)
    {
      lastp->next = listp;
    }
    else
    {
      *ldata = listp;
    }
    lastp = listp;
  }
  while (MoreArgs (s));
   
  _attachments_clean();
  return 0;
}

static int parse_unattach_list (BUFFER *buf, BUFFER *s, LIST **ldata, BUFFER *err)
{
  ATTACH_MATCH *a;
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  LIST *lp, *lastp, *newlp;
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  char *tmp;
  int major;
  char *minor;

  do
  {
    mutt_extract_token (buf, s, 0);

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    if (!ascii_strcasecmp(buf->data, "any"))
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      tmp = safe_strdup("*/.*");
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    else if (!ascii_strcasecmp(buf->data, "none"))
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      tmp = safe_strdup("cheap_hack/this_should_never_match");
    else
      tmp = safe_strdup(buf->data);

    if ((minor = strchr(tmp, '/')))
    {
      *minor = '\0';
      ++minor;
    }
    else
    {
      minor = "unknown";
    }
    major = mutt_check_mime_type(tmp);

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    /* We must do our own walk here because remove_from_list() will only
     * remove the LIST->data, not anything pointed to by the LIST->data. */
1051
    lastp = NULL;
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    for(lp = *ldata; lp; )
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    {
      a = (ATTACH_MATCH *)lp->data;
      dprint(5, (debugfile, "parse_unattach_list: check %s/%s [%d] : %s/%s [%d]\n",
		  a->major, a->minor, a->major_int, tmp, minor, major));
      if (a->major_int == major && !mutt_strcasecmp(minor, a->minor))
      {
	dprint(5, (debugfile, "parse_unattach_list: removed %s/%s [%d]\n",
		    a->major, a->minor, a->major_int));
	regfree(&a->minor_rx);
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	FREE(&a->major);

	/* Relink backward */
	if (lastp)
	  lastp->next = lp->next;
	else
	  *ldata = lp->next;

        newlp = lp->next;
        FREE(&lp->data);	/* same as a */
        FREE(&lp);
        lp = newlp;
        continue;
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      }

      lastp = lp;
      lp = lp->next;
    }

  }
  while (MoreArgs (s));
   
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  FREE(&tmp);
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  _attachments_clean();
  return 0;
}

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static int print_attach_list (LIST *lp, char op, char *name)
{
  while (lp) {
    printf("attachments %c%s %s/%s\n", op, name,
           ((ATTACH_MATCH *)lp->data)->major,
           ((ATTACH_MATCH *)lp->data)->minor);
    lp = lp->next;
  }

  return 0;
}

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static int parse_attachments (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
1104
  char op, *category;
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  LIST **listp;

  mutt_extract_token(buf, s, 0);
  if (!buf->data || *buf->data == '\0') {
    strfcpy(err->data, _("attachments: no disposition"), err->dsize);
    return -1;
  }

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  category = buf->data;
  op = *category++;

  if (op == '?') {
    mutt_endwin (NULL);
    fflush (stdout);
    printf("\nCurrent attachments settings:\n\n");
    print_attach_list(AttachAllow,   '+', "A");
    print_attach_list(AttachExclude, '-', "A");
    print_attach_list(InlineAllow,   '+', "I");
    print_attach_list(InlineExclude, '-', "I");
    set_option (OPTFORCEREDRAWINDEX);
    set_option (OPTFORCEREDRAWPAGER);
    mutt_any_key_to_continue (NULL);
    return 0;
  }

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  if (op != '+' && op != '-') {
    op = '+';
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    category--;
1133
  }
1134
  if (!ascii_strncasecmp(category, "attachment", strlen(category))) {
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    if (op == '+')
      listp = &AttachAllow;
    else
      listp = &AttachExclude;
  }
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  else if (!ascii_strncasecmp(category, "inline", strlen(category))) {
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    if (op == '+')
      listp = &InlineAllow;
    else
      listp = &InlineExclude;
  }
  else {
    strfcpy(err->data, _("attachments: invalid disposition"), err->dsize);
    return -1;
  }

  return parse_attach_list(buf, s, listp, err);
}

static int parse_unattachments (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  char op, *p;
  LIST **listp;

  mutt_extract_token(buf, s, 0);
  if (!buf->data || *buf->data == '\0') {
    strfcpy(err->data, _("unattachments: no disposition"), err->dsize);
    return -1;
  }

  p = buf->data;
  op = *p++;
  if (op != '+' && op != '-') {
    op = '+';
    p--;
  }
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  if (!ascii_strncasecmp(p, "attachment", strlen(p))) {
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    if (op == '+')
      listp = &AttachAllow;
    else
      listp = &AttachExclude;
  }
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  else if (!ascii_strncasecmp(p, "inline", strlen(p))) {
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    if (op == '+')
      listp = &InlineAllow;
    else
      listp = &InlineExclude;
  }
  else {
    strfcpy(err->data, _("unattachments: invalid disposition"), err->dsize);
    return -1;
  }

  return parse_unattach_list(buf, s, listp, err);
}

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static int parse_unlists (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  do
  {
    mutt_extract_token (buf, s, 0);
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    remove_from_rx_list (&SubscribedLists, buf->data);
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    remove_from_rx_list (&MailLists, buf->data);
    
    if (mutt_strcmp (buf->data, "*") && 
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	mutt_add_to_rx_list (&UnMailLists, buf->data, REG_ICASE, err) != 0)
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      return -1;
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  }
  while (MoreArgs (s));

  return 0;
}

static int parse_subscribe (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
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  group_context_t *gc = NULL;
  
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  do
  {
    mutt_extract_token (buf, s, 0);
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    if (parse_group_context (&gc, buf, s, data, err) == -1)
      goto bail;
    
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    remove_from_rx_list (&UnMailLists, buf->data);
    remove_from_rx_list (&UnSubscribedLists, buf->data);

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    if (mutt_add_to_rx_list (&MailLists, buf->data, REG_ICASE, err) != 0)
      goto bail;
    if (mutt_add_to_rx_list (&SubscribedLists, buf->data, REG_ICASE, err) != 0)
      goto bail;
    if (mutt_group_context_add_rx (gc, buf->data, REG_ICASE, err) != 0)
      goto bail;
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  }
  while (MoreArgs (s));
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  mutt_group_context_destroy (&gc);
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  return 0;
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 bail:
  mutt_group_context_destroy (&gc);
  return -1;
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}
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static int parse_unsubscribe (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  do
  {
    mutt_extract_token (buf, s, 0);
    remove_from_rx_list (&SubscribedLists, buf->data);
    
    if (mutt_strcmp (buf->data, "*") &&
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	mutt_add_to_rx_list (&UnSubscribedLists, buf->data, REG_ICASE, err) != 0)
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      return -1;
  }
  while (MoreArgs (s));

  return 0;
}
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static int parse_unalias (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  ALIAS *tmp, *last = NULL;

  do
  {
    mutt_extract_token (buf, s, 0);

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    if (mutt_strcmp ("*", buf->data) == 0)
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    {
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      if (CurrentMenu == MENU_ALIAS)
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      {
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	for (tmp = Aliases; tmp ; tmp = tmp->next) 
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	  tmp->del = 1;
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	set_option (OPTFORCEREDRAWINDEX);
      }
      else
	mutt_free_alias (&Aliases);
      break;
    }
    else
      for (tmp = Aliases; tmp; tmp = tmp->next)
      {
	if (mutt_strcasecmp (buf->data, tmp->name) == 0)
	{
	  if (CurrentMenu == MENU_ALIAS)
	  {
	    tmp->del = 1;
	    set_option (OPTFORCEREDRAWINDEX);
	    break;
	  }

	  if (last)
	    last->next = tmp->next;
	  else
	    Aliases = tmp->next;
	  tmp->next = NULL;
	  mutt_free_alias (&tmp);
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	  break;
	}
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	last = tmp;
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      }
  }
  while (MoreArgs (s));
  return 0;
}

static int parse_alias (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  ALIAS *tmp = Aliases;
  ALIAS *last = NULL;
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  char *estr = NULL;
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  group_context_t *gc = NULL;
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  if (!MoreArgs (s))
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  {
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    strfcpy (err->data, _("alias: no address"), err->dsize);
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    return (-1);
  }

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  mutt_extract_token (buf, s, 0);
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  if (parse_group_context (&gc, buf, s, data, err) == -1)
    return -1;
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  /* check to see if an alias with this name already exists */
  for (; tmp; tmp = tmp->next)
  {
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    if (!mutt_strcasecmp (tmp->name, buf->data))
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      break;
    last = tmp;
  }

  if (!tmp)
  {
    /* create a new alias */
    tmp = (ALIAS *) safe_calloc (1, sizeof (ALIAS));
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    tmp->self = tmp;
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    tmp->name = safe_strdup (buf->data);
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    /* give the main addressbook code a chance */
    if (CurrentMenu == MENU_ALIAS)
      set_option (OPTMENUCALLER);
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  }
  else
  {
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    mutt_alias_delete_reverse (tmp);
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    /* override the previous value */
    rfc822_free_address (&tmp->addr);
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    if (CurrentMenu == MENU_ALIAS)
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      set_option (OPTFORCEREDRAWINDEX);
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  }

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  mutt_extract_token (buf, s, M_TOKEN_QUOTE | M_TOKEN_SPACE | M_TOKEN_SEMICOLON);
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  dprint (2, (debugfile, "parse_alias: Second token is '%s'.\n",
	      buf->data));
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  tmp->addr = mutt_parse_adrlist (tmp->addr, buf->data);
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  if (last)
    last->next = tmp;
  else
    Aliases = tmp;
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  if (mutt_addrlist_to_idna (tmp->addr, &estr))
  {
    snprintf (err->data, err->dsize, _("Warning: Bad IDN '%s' in alias '%s'.\n"),
	      estr, tmp->name);
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    goto bail;
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  }
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  mutt_group_context_add_adrlist (gc, tmp->addr);
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  mutt_alias_add_reverse (tmp);
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#ifdef DEBUG
  if (debuglevel >= 2) 
  {
    ADDRESS *a;
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    /* A group is terminated with an empty address, so check a->mailbox */
    for (a = tmp->addr; a && a->mailbox; a = a->next)
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    {
      if (!a->group)
	dprint (2, (debugfile, "parse_alias:   %s\n",
		    a->mailbox));
      else
	dprint (2, (debugfile, "parse_alias:   Group %s\n",
		    a->mailbox));
    }
  }
#endif
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  mutt_group_context_destroy (&gc);
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  return 0;
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  bail:
  mutt_group_context_destroy (&gc);
  return -1;
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}

static int
parse_unmy_hdr (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  LIST *last = NULL;
  LIST *tmp = UserHeader;
  LIST *ptr;
  size_t l;

  do
  {
    mutt_extract_token (buf, s, 0);
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    if (mutt_strcmp ("*", buf->data) == 0)
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      mutt_free_list (&UserHeader);
    else
    {
      tmp = UserHeader;
      last = NULL;

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      l = mutt_strlen (buf->data);
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      if (buf->data[l - 1] == ':')
	l--;

      while (tmp)
      {
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	if (ascii_strncasecmp (buf->data, tmp->data, l) == 0 && tmp->data[l] == ':')
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	{
	  ptr = tmp;
	  if (last)
	    last->next = tmp->next;
	  else
	    UserHeader = tmp->next;
	  tmp = tmp->next;
	  ptr->next = NULL;
	  mutt_free_list (&ptr);
	}
	else
	{
	  last = tmp;
	  tmp = tmp->next;
	}
      }
    }
  }
  while (MoreArgs (s));
  return 0;
}

static int parse_my_hdr (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
  LIST *tmp;
  size_t keylen;
  char *p;

  mutt_extract_token (buf, s, M_TOKEN_SPACE | M_TOKEN_QUOTE);
  if ((p = strpbrk (buf->data, ": \t")) == NULL || *p != ':')
  {
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    strfcpy (err->data, _("invalid header field"), err->dsize);
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    return (-1);
  }
  keylen = p - buf->data + 1;

  if (UserHeader)
  {
    for (tmp = UserHeader; ; tmp = tmp->next)
    {
      /* see if there is already a field by this name */