send.c

mutt-1.5.12 源代码。linux 下邮件接受的工具。

    env->cc = NULL;
  }
}

void mutt_make_forward_subject (ENVELOPE *env, CONTEXT *ctx, HEADER *cur)
{
  char buffer[STRING];

  /* set the default subject for the message. */
  mutt_make_string (buffer, sizeof (buffer), NONULL(ForwFmt), ctx, cur);
  mutt_str_replace (&env->subject, buffer);
}

void mutt_make_misc_reply_headers (ENVELOPE *env, CONTEXT *ctx,
				    HEADER *cur, ENVELOPE *curenv)
{
  /* This takes precedence over a subject that might have
   * been taken from a List-Post header.  Is that correct?
   */
  if (curenv->real_subj)
  {
    FREE (&env->subject);
    env->subject = safe_malloc (mutt_strlen (curenv->real_subj) + 5);
    sprintf (env->subject, "Re: %s", curenv->real_subj);	/* __SPRINTF_CHECKED__ */
  }
  else if (!env->subject)
    env->subject = safe_strdup ("Re: your mail");
}

void mutt_add_to_reference_headers (ENVELOPE *env, ENVELOPE *curenv, LIST ***pp, LIST ***qq)
{
  LIST **p = NULL, **q = NULL;

  if (pp) p = *pp;
  if (qq) q = *qq;
  
  if (!p) p = &env->references;
  if (!q) q = &env->in_reply_to;
  
  while (*p) p = &(*p)->next;
  while (*q) q = &(*q)->next;
  
  *p = mutt_make_references (curenv);
  
  if (curenv->message_id)
  {
    *q = mutt_new_list();
    (*q)->data = safe_strdup (curenv->message_id);
  }
  
  if (pp) *pp = p;
  if (qq) *qq = q;
  
}

static void 
mutt_make_reference_headers (ENVELOPE *curenv, ENVELOPE *env, CONTEXT *ctx)
{
  env->references = NULL;
  env->in_reply_to = NULL;
  
  if (!curenv)
  {
    HEADER *h;
    LIST **p = NULL, **q = NULL;
    int i;
    
    for(i = 0; i < ctx->vcount; i++)
    {
      h = ctx->hdrs[ctx->v2r[i]];
      if (h->tagged)
	mutt_add_to_reference_headers (env, h->env, &p, &q);
    }
  }
  else
    mutt_add_to_reference_headers (env, curenv, NULL, NULL);
}

static int
envelope_defaults (ENVELOPE *env, CONTEXT *ctx, HEADER *cur, int flags)
{
  ENVELOPE *curenv = NULL;
  int i = 0, tag = 0;

  if (!cur)
  {
    tag = 1;
    for (i = 0; i < ctx->vcount; i++)
      if (ctx->hdrs[ctx->v2r[i]]->tagged)
      {
	cur = ctx->hdrs[ctx->v2r[i]];
	curenv = cur->env;
	break;
      }

    if (!cur)
    {
      /* This could happen if the user tagged some messages and then did
       * a limit such that none of the tagged message are visible.
       */
      mutt_error _("No tagged messages are visible!");
      return (-1);
    }
  }
  else
    curenv = cur->env;

  if (flags & SENDREPLY)
  {
    if (tag)
    {
      HEADER *h;

      for (i = 0; i < ctx->vcount; i++)
      {
	h = ctx->hdrs[ctx->v2r[i]];
	if (h->tagged && mutt_fetch_recips (env, h->env, flags) == -1)
	  return -1;
      }
    }
    else if (mutt_fetch_recips (env, curenv, flags) == -1)
      return -1;

    if ((flags & SENDLISTREPLY) && !env->to)
    {
      mutt_error _("No mailing lists found!");
      return (-1);
    }

    mutt_make_misc_reply_headers (env, ctx, cur, curenv);
    mutt_make_reference_headers (tag ? NULL : curenv, env, ctx);
  }
  else if (flags & SENDFORWARD)
    mutt_make_forward_subject (env, ctx, cur);

  return (0);
}

static int
generate_body (FILE *tempfp,	/* stream for outgoing message */
	       HEADER *msg,	/* header for outgoing message */
	       int flags,	/* compose mode */
	       CONTEXT *ctx,	/* current mailbox */
	       HEADER *cur)	/* current message */
{
  int i;
  HEADER *h;
  BODY *tmp;

  if (flags & SENDREPLY)
  {
    if ((i = query_quadoption (OPT_INCLUDE, _("Include message in reply?"))) == -1)
      return (-1);

    if (i == M_YES)
    {
      mutt_message _("Including quoted message...");
      if (!cur)
      {
	for (i = 0; i < ctx->vcount; i++)
	{
	  h = ctx->hdrs[ctx->v2r[i]];
	  if (h->tagged)
	  {
	    if (include_reply (ctx, h, tempfp) == -1)
	    {
	      mutt_error _("Could not include all requested messages!");
	      return (-1);
	    }
	    fputc ('\n', tempfp);
	  }
	}
      }
      else
	include_reply (ctx, cur, tempfp);

    }
  }
  else if (flags & SENDFORWARD)
  {
    if ((i = query_quadoption (OPT_MIMEFWD, _("Forward as attachment?"))) == M_YES)
    {
      BODY *last = msg->content;

      mutt_message _("Preparing forwarded message...");
      
      while (last && last->next)
	last = last->next;

      if (cur)
      {
	tmp = mutt_make_message_attach (ctx, cur, 0);
	if (last)
	  last->next = tmp;
	else
	  msg->content = tmp;
      }
      else
      {
	for (i = 0; i < ctx->vcount; i++)
	{
	  if (ctx->hdrs[ctx->v2r[i]]->tagged)
	  {
	    tmp = mutt_make_message_attach (ctx, ctx->hdrs[ctx->v2r[i]], 0);
	    if (last)
	    {
	      last->next = tmp;
	      last = tmp;
	    }
	    else
	      last = msg->content = tmp;
	  }
	}
      }
    }
    else if (i != -1)
    {
      if (cur)
	include_forward (ctx, cur, tempfp);
      else
	for (i=0; i < ctx->vcount; i++)
	  if (ctx->hdrs[ctx->v2r[i]]->tagged)
	    include_forward (ctx, ctx->hdrs[ctx->v2r[i]], tempfp);
    }
    else if (i == -1)
      return -1;
  }
  /* if (WithCrypto && (flags & SENDKEY)) */
  else if ((WithCrypto & APPLICATION_PGP) && (flags & SENDKEY)) 
  {
    BODY *tmp;

    if ((WithCrypto & APPLICATION_PGP)
        && (tmp = crypt_pgp_make_key_attachment (NULL)) == NULL)
      return -1;

    tmp->next = msg->content;
    msg->content = tmp;
  }

  mutt_clear_error ();

  return (0);
}

void mutt_set_followup_to (ENVELOPE *e)
{
  ADDRESS *t = NULL;
  ADDRESS *from;

  /* 
   * Only generate the Mail-Followup-To if the user has requested it, and
   * it hasn't already been set
   */

  if (option (OPTFOLLOWUPTO) && !e->mail_followup_to)
  {
    if (mutt_is_list_cc (0, e->to, e->cc))
    {
      /* 
       * this message goes to known mailing lists, so create a proper
       * mail-followup-to header
       */

      t = rfc822_append (&e->mail_followup_to, e->to);
      rfc822_append (&t, e->cc);
    }

    /* remove ourselves from the mail-followup-to header */
    e->mail_followup_to = remove_user (e->mail_followup_to, 0);

    /*
     * If we are not subscribed to any of the lists in question,
     * re-add ourselves to the mail-followup-to header.  The 
     * mail-followup-to header generated is a no-op with group-reply,
     * but makes sure list-reply has the desired effect.
     */

    if (e->mail_followup_to && !mutt_is_list_recipient (0, e->to, e->cc))
    {
      if (e->reply_to)
	from = rfc822_cpy_adr (e->reply_to);
      else if (e->from)
	from = rfc822_cpy_adr (e->from);
      else
	from = mutt_default_from ();
      
      if (from)
      {
	/* Normally, this loop will not even be entered. */
	for (t = from; t && t->next; t = t->next)
	  ;
	
	t->next = e->mail_followup_to; 	/* t cannot be NULL at this point. */
	e->mail_followup_to = from;
      }
    }
    
    e->mail_followup_to = mutt_remove_duplicates (e->mail_followup_to);
    
  }
}


/* look through the recipients of the message we are replying to, and if
   we find an address that matches $alternates, we use that as the default
   from field */
static ADDRESS *set_reverse_name (ENVELOPE *env)
{
  ADDRESS *tmp;

  for (tmp = env->to; tmp; tmp = tmp->next)
  {
    if (mutt_addr_is_user (tmp))
      break;
  }
  if (!tmp)
  {
    for (tmp = env->cc; tmp; tmp = tmp->next)
    {
      if (mutt_addr_is_user (tmp))
	break;
    }
  }
  if (!tmp && mutt_addr_is_user (env->from))
    tmp = env->from;
  if (tmp)
  {
    tmp = rfc822_cpy_adr_real (tmp);
    if (!option (OPTREVREAL))
      FREE (&tmp->personal);
    if (!tmp->personal)
      tmp->personal = safe_strdup (Realname);
  }
  return (tmp);
}

ADDRESS *mutt_default_from (void)
{
  ADDRESS *adr;
  const char *fqdn = mutt_fqdn(1);

  /* 
   * Note: We let $from override $realname here.  Is this the right
   * thing to do? 
   */

  if (From)
    adr = rfc822_cpy_adr_real (From);
  else if (option (OPTUSEDOMAIN))
  {
    adr = rfc822_new_address ();
    adr->mailbox = safe_malloc (mutt_strlen (Username) + mutt_strlen (fqdn) + 2);
    sprintf (adr->mailbox, "%s@%s", NONULL(Username), NONULL(fqdn));	/* __SPRINTF_CHECKED__ */
  }
  else
  {
    adr = rfc822_new_address ();
    adr->mailbox = safe_strdup (NONULL(Username));
  }
  
  return (adr);
}

static int send_message (HEADER *msg)
{  
  char tempfile[_POSIX_PATH_MAX];
  FILE *tempfp;
  int i;
  
  /* Write out the message in MIME form. */
  mutt_mktemp (tempfile);
  if ((tempfp = safe_fopen (tempfile, "w")) == NULL)
    return (-1);

#ifdef MIXMASTER
  mutt_write_rfc822_header (tempfp, msg->env, msg->content, 0, msg->chain ? 1 : 0);
#endif
#ifndef MIXMASTER
  mutt_write_rfc822_header (tempfp, msg->env, msg->content, 0, 0);
#endif
  
  fputc ('\n', tempfp); /* tie off the header. */

  if ((mutt_write_mime_body (msg->content, tempfp) == -1))
  {
    fclose(tempfp);
    unlink (tempfile);
    return (-1);
  }
  
  if (fclose (tempfp) != 0)
  {
    mutt_perror (tempfile);
    unlink (tempfile);
    return (-1);
  }

#ifdef MIXMASTER
  if (msg->chain)
    return mix_send_message (msg->chain, tempfile);
#endif

  i = mutt_invoke_sendmail (msg->env->from, msg->env->to, msg->env->cc, 
			    msg->env->bcc, tempfile, (msg->content->encoding == ENC8BIT));
  return (i);
}

/* rfc2047 encode the content-descriptions */
static void encode_descriptions (BODY *b, short recurse)
{
  BODY *t;

  for (t = b; t; t = t->next)
  {
    if (t->description)
    {
      rfc2047_encode_string (&t->description);
    }
    if (recurse && t->parts)
      encode_descriptions (t->parts, recurse);
  }
}

/* rfc2047 decode them in case of an error */
static void decode_descriptions (BODY *b)
{
  BODY *t;
  
  for (t = b; t; t = t->next)
  {
    if (t->description)
    {
      rfc2047_decode (&t->description);
    }
    if (t->parts)
      decode_descriptions (t->parts);
  }
}

static void fix_end_of_file (const char *data)
{
  FILE *fp;
  int c;
  
  if ((fp = safe_fopen (data, "a+")) == NULL)
    return;
  fseek (fp,-1,SEEK_END);
  if ((c = fgetc(fp)) != '\n')
    fputc ('\n', fp);
  safe_fclose (&fp);
}

int mutt_resend_message (FILE *fp, CONTEXT *ctx, HEADER *cur)
{
  HEADER *msg = mutt_new_header ();
  
  if (mutt_prepare_template (fp, ctx, msg, cur, 1) < 0)
    return -1;
  
  return ci_send_message (SENDRESEND, msg, NULL, ctx, cur);
}

int
ci_send_message (int flags,		/* send mode */
		 HEADER *msg,		/* template to use for new message */
		 char *tempfile,	/* file specified by -i or -H */
		 CONTEXT *ctx,		/* current mailbox */
		 HEADER *cur)		/* current message */
{
  char buffer[LONG_STRING];
  char fcc[_POSIX_PATH_MAX] = ""; /* where to copy this message */
  FILE *tempfp = NULL;
  BODY *pbody;
  int i, killfrom = 0;
  int fcc_error = 0;
  int free_clear_content = 0;

  BODY *save_content = NULL;
  BODY *clear_content = NULL;
  char *pgpkeylist = NULL;
  /* save current value of "pgp_sign_as" */
  char *signas = NULL;
  char *tag = NULL, *err = NULL;
  char *ctype;

  int rv = -1;
  
  if (!flags && !msg && quadoption (OPT_RECALL) != M_NO &&
      mutt_num_postponed (1))
  {
    /* If the user is composing a new message, check to see if there
     * are any postponed messages first.
     */
    if ((i = query_quadoption (OPT_RECALL, _("Recall postponed message?"))) == -1)
      return rv;

    if(i == M_YES)
      flags |= SENDPOSTPONED;
  }
  
  
  if ((WithCrypto & APPLICATION_PGP) && (flags & SENDPOSTPONED))
    signas = safe_strdup(PgpSignAs);

  /* Delay expansion of aliases until absolutely necessary--shouldn't
   * be necessary unless we are prompting the user or about to execute a
   * send-hook.
   */

  if (!msg)
  {
    msg = mutt_new_header ();

    if (flags == SENDPOSTPONED)
    {
      if ((flags = mutt_get_postponed (ctx, msg, &cur, fcc, sizeof (fcc))) < 0)
	goto cleanup;
    }

    if (flags & (SENDPOSTPONED|SENDRESEND))
    {
      if ((tempfp = safe_fopen (msg->content->filename, "a+")) == NULL)
      {
	mutt_perror (msg->content->filename);
	goto cleanup;
      }
    }

    if (!msg->env)
      msg->env = mutt_new_envelope ();
  }

  /* Parse and use an eventual list-post header */
  if ((flags & SENDLISTREPLY) 
      && cur && cur->env && cur->env->list_post) 
  {
    /* Use any list-post header as a template */
    url_parse_mailto (msg->env, NULL, cur->env->list_post);
    /* We don't let them set the sender's address. */
    rfc822_free_address (&msg->env->from);
  }
  
  if (! (flags & (SENDKEY | SENDPOSTPONED | SENDRESEND)))
  {
    pbody = mutt_new_body ();
    pbody->next = msg->content; /* don't kill command-line attachments */
    msg->content = pbody;

    if (!(ctype = safe_strdup (ContentType)))
      ctype = safe_strdup ("text/plain");
    mutt_parse_content_type (ctype, msg->content);
    FREE (&ctype);
    msg->content->unlink = 1;
    msg->content->use_disp = 0;
    msg->content->disposition = DISPINLINE;
    if (option (OPTTEXTFLOWED) && msg->content->type == TYPETEXT && !ascii_strcasecmp (msg->content->subtype, "plain"))
      mutt_set_parameter ("format", "flowed", &msg->content->parameter);
    
    if (!tempfile)
    {
      mutt_mktemp (buffer);
      tempfp = safe_fopen (buffer, "w+");
      msg->content->filename = safe_strdup (buffer);
    }
    else
    {
      tempfp = safe_fopen (tempfile, "a+");
      msg->content->filename = safe_strdup (tempfile);
    }

    if (!tempfp)
    {
      dprint(1,(debugfile, "newsend_message: can't create tempfile %s (errno=%d)\n", msg->content->filename, errno));
      mutt_perror (msg->content->filename);
      goto cleanup;
    }
  }

  /* this is handled here so that the user can match ~f in send-hook */
  if (cur && option (OPTREVNAME) && !(flags & (SENDPOSTPONED|SENDRESEND)))
  {
    /* we shouldn't have to worry about freeing `msg->env->from' before
     * setting it here since this code will only execute when doing some
     * sort of reply.  the pointer will only be set when using the -H command
     * line option.
     *
     * We shouldn't have to worry about alias expansion here since we are
     * either replying to a real or postponed message, therefore no aliases
     * should exist since the user has not had the opportunity to add
     * addresses to the list.  We just have to ensure the postponed messages
     * have their aliases expanded.
     */

    msg->env->from = set_reverse_name (cur->env);