recvattach.c File Reference

Attachment code. More...

#include "config.h"
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "mutt.h"
#include "recvattach.h"
#include "browser/lib.h"
#include "editor/lib.h"
#include "history/lib.h"
#include "menu/lib.h"
#include "ncrypt/lib.h"
#include "question/lib.h"
#include "send/lib.h"
#include "attach.h"
#include "external.h"
#include "globals.h"
#include "handler.h"
#include "hook.h"
#include "mailcap.h"
#include "mutt_attach.h"
#include "mutt_thread.h"
#include "muttlib.h"
#include "rfc3676.h"
#include <libintl.h>

Include dependency graph for recvattach.c:

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Functions
struct AttachPtr *	current_attachment (struct AttachCtx *actx, struct Menu *menu)
	Get the current attachment.
static void	mutt_update_v2r (struct AttachCtx *actx)
	Update the virtual list of attachments.
void	mutt_update_tree (struct AttachCtx *actx)
	Refresh the list of attachments.
static void	prepend_savedir (struct Buffer *buf)
	Add $attach_save_dir to the beginning of a path.
static bool	has_a_message (struct Body *body)
	Determine if the Body has a message (to save)
static int	save_attachment_flowed_helper (FILE *fp, struct Body *b, const char *path, enum SaveAttach flags, struct Email *e)
	Helper for unstuffing attachments.
static int	query_save_attachment (FILE *fp, struct Body *body, struct Email *e, char **directory)
	Ask the user if we should save the attachment.
static int	save_without_prompting (FILE *fp, struct Body *body, struct Email *e)
	Save the attachment, without prompting each time.
void	mutt_save_attachment_list (struct AttachCtx *actx, FILE *fp, bool tag, struct Body *top, struct Email *e, struct Menu *menu)
	Save a list of attachments.
static void	query_pipe_attachment (const char *command, FILE *fp, struct Body *body, bool filter)
	Ask the user if we should pipe the attachment.
static void	pipe_attachment (FILE *fp, struct Body *b, struct State *state)
	Pipe the attachment to a command.
static void	pipe_attachment_list (const char *command, struct AttachCtx *actx, FILE *fp, bool tag, struct Body *top, bool filter, struct State *state)
	Pipe a list of attachments to a command.
void	mutt_pipe_attachment_list (struct AttachCtx *actx, FILE *fp, bool tag, struct Body *top, bool filter)
	Pipe a list of attachments to a command.
static bool	can_print (struct AttachCtx *actx, struct Body *top, bool tag)
	Do we know how to print this attachment type?
static void	print_attachment_list (struct AttachCtx *actx, FILE *fp, bool tag, struct Body *top, struct State *state)
	Print a list of Attachments.
void	mutt_print_attachment_list (struct AttachCtx *actx, FILE *fp, bool tag, struct Body *top)
	Print a list of Attachments.
void	recvattach_edit_content_type (struct AttachCtx *actx, struct Menu *menu, struct Email *e)
	Edit the content type of an attachment.
int	mutt_attach_display_loop (struct ConfigSubset *sub, struct Menu *menu, int op, struct Email *e, struct AttachCtx *actx, bool recv)
	Event loop for the Attachment menu.
void	mutt_generate_recvattach_list (struct AttachCtx *actx, struct Email *e, struct Body *parts, FILE *fp, int parent_type, int level, bool decrypted)
	Create a list of attachments.
void	mutt_attach_init (struct AttachCtx *actx)
	Create a new Attachment context.
void	mutt_update_recvattach_menu (struct AttachCtx *actx, struct Menu *menu, bool init)
	Update the Attachment Menu.
int	ba_add_tagged (struct BodyArray *ba, struct AttachCtx *actx, struct Menu *menu)
	Get an array of tagged Attachments.

Detailed Description

Attachment code.

Authors

• Michael R. Elkins
• Thomas Roessler

Copyright

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, see http://www.gnu.org/licenses/.

Definition in file recvattach.c.

Function Documentation

current_attachment()

struct AttachPtr * current_attachment	(	struct AttachCtx *	actx,
		struct Menu *	menu
	)

Get the current attachment.

Parameters

actx	Attachment context
menu	Menu

Return values

ptr	Current Attachment

Definition at line 71 of file recvattach.c.

{
  const int virt = menu_get_index(menu);
  const int index = actx->v2r[virt];
 
  return actx->idx[index];
}

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mutt_update_v2r()

static void mutt_update_v2r ( struct AttachCtx *  actx )

static

Update the virtual list of attachments.

Parameters

actx	Attachment context

Update the record of the number of attachments and the status of the tree.

Definition at line 85 of file recvattach.c.

{
  int vindex, rindex, curlevel;
 
  vindex = 0;
  rindex = 0;
 
  while (rindex < actx->idxlen)
  {
    actx->v2r[vindex++] = rindex;
    if (actx->idx[rindex]->collapsed)
    {
      curlevel = actx->idx[rindex]->level;
      do
      {
        rindex++;
      } while ((rindex < actx->idxlen) && (actx->idx[rindex]->level > curlevel));
    }
    else
    {
      rindex++;
    }
  }
 
  actx->vcount = vindex;
}

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mutt_update_tree()

void mutt_update_tree

(

struct AttachCtx *

actx

)

Refresh the list of attachments.

Parameters

actx	Attachment context

Definition at line 116 of file recvattach.c.

{
  char buf[256] = { 0 };
  char *s = NULL;
 
  mutt_update_v2r(actx);
 
  for (int vindex = 0; vindex < actx->vcount; vindex++)
  {
    const int rindex = actx->v2r[vindex];
    actx->idx[rindex]->num = vindex;
    if ((2 * (actx->idx[rindex]->level + 2)) < sizeof(buf))
    {
      if (actx->idx[rindex]->level)
      {
        s = buf + 2 * (actx->idx[rindex]->level - 1);
        *s++ = (actx->idx[rindex]->body->next) ? MUTT_TREE_LTEE : MUTT_TREE_LLCORNER;
        *s++ = MUTT_TREE_HLINE;
        *s++ = MUTT_TREE_RARROW;
      }
      else
      {
        s = buf;
      }
      *s = '\0';
    }
 
    if (actx->idx[rindex]->tree)
    {
      if (!mutt_str_equal(actx->idx[rindex]->tree, buf))
        mutt_str_replace(&actx->idx[rindex]->tree, buf);
    }
    else
    {
      actx->idx[rindex]->tree = mutt_str_dup(buf);
    }
 
    if (((2 * (actx->idx[rindex]->level + 2)) < sizeof(buf)) &&
        actx->idx[rindex]->level)
    {
      s = buf + 2 * (actx->idx[rindex]->level - 1);
      *s++ = (actx->idx[rindex]->body->next) ? '\005' : '\006';
      *s++ = '\006';
    }
  }
}

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prepend_savedir()

static void prepend_savedir ( struct Buffer *  buf )

static

Add $attach_save_dir to the beginning of a path.

Parameters

buf	Buffer for the result

Definition at line 167 of file recvattach.c.

{
  if (!buf || !buf->data || (buf->data[0] == '/'))
    return;
 
  struct Buffer *tmp = buf_pool_get();
  const char *const c_attach_save_dir = cs_subset_path(NeoMutt->sub, "attach_save_dir");
  if (c_attach_save_dir)
  {
    buf_addstr(tmp, c_attach_save_dir);
    if (tmp->dptr[-1] != '/')
      buf_addch(tmp, '/');
  }
  else
  {
    buf_addstr(tmp, "./");
  }
 
  buf_addstr(tmp, buf_string(buf));
  buf_copy(buf, tmp);
  buf_pool_release(&tmp);
}

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has_a_message()

static bool has_a_message ( struct Body *  body )

static

Determine if the Body has a message (to save)

Parameters

[in]

body

Body of the message

Return values

true	Suitable for saving

Definition at line 195 of file recvattach.c.

{
  return (body->email && (body->encoding != ENC_BASE64) &&
          (body->encoding != ENC_QUOTED_PRINTABLE) &&
          mutt_is_message_type(body->type, body->subtype));
}

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save_attachment_flowed_helper()

static int save_attachment_flowed_helper ( FILE *  fp, struct Body *  b, const char *  path, enum SaveAttach  flags, struct Email *  e  )

static

Helper for unstuffing attachments.

Parameters

fp	Attachment to work on
b	Body of email
path	Path to save the attachment
flags	Flags, e.g. MUTT_SAVE_APPEND
e	Email

Return values

0	Success
-1	Failure

This is a proxy between the mutt_save_attachment_list() calls and mutt_save_attachment(). It (currently) exists solely to unstuff format=flowed text attachments.

Direct modification of mutt_save_attachment() wasn't easily possible because: 1) other callers of mutt_save_attachment() should not have unstuffing performed, such as replying/forwarding attachments. 2) the attachment saving can append to a file, making the unstuffing inside difficult with current functions. 3) we can't unstuff before-hand because decoding hasn't occurred.

So, I apologize for this horrific proxy, but it was the most straightforward method.

Definition at line 227 of file recvattach.c.

{
  int rc = -1;
 
  if (mutt_rfc3676_is_format_flowed(b))
  {
    struct Body b_fake = { 0 };
 
    struct Buffer *tempfile = buf_pool_get();
    buf_mktemp(tempfile);
 
    /* Pass MUTT_SAVE_NO_FLAGS to force mutt_file_fopen("w") */
    rc = mutt_save_attachment(fp, b, buf_string(tempfile), MUTT_SAVE_NO_FLAGS, e);
    if (rc != 0)
      goto cleanup;
 
    mutt_rfc3676_space_unstuff_attachment(b, buf_string(tempfile));
 
    /* Now "really" save it.  Send mode does this without touching anything,
     * so force send-mode. */
    memset(&b_fake, 0, sizeof(struct Body));
    b_fake.filename = tempfile->data;
    rc = mutt_save_attachment(NULL, &b_fake, path, flags, e);
 
    mutt_file_unlink(buf_string(tempfile));
 
  cleanup:
    buf_pool_release(&tempfile);
  }
  else
  {
    rc = mutt_save_attachment(fp, b, path, flags, e);
  }
 
  return rc;
}

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query_save_attachment()

static int query_save_attachment ( FILE *  fp, struct Body *  body, struct Email *  e, char **  directory  )

static

Ask the user if we should save the attachment.

Parameters

[in]	fp	File handle to the attachment (OPTIONAL)
[in]	body	Attachment
[in]	e	Email
[out]	directory	Where the attachment was saved

Return values

0	Success
-1	Failure

Definition at line 274 of file recvattach.c.

{
  char *prompt = NULL;
  enum SaveAttach opt = MUTT_SAVE_NO_FLAGS;
  int rc = -1;
 
  struct Buffer *buf = buf_pool_get();
  struct Buffer *tfile = buf_pool_get();
 
  if (body->filename)
  {
    if (directory && *directory)
    {
      buf_concat_path(buf, *directory, mutt_path_basename(body->filename));
    }
    else
    {
      buf_strcpy(buf, body->filename);
    }
  }
  else if (has_a_message(body))
  {
    mutt_default_save(buf->data, buf->dsize, body->email);
    buf_fix_dptr(buf);
  }
 
  prepend_savedir(buf);
 
  prompt = _("Save to file: ");
  while (prompt)
  {
    struct FileCompletionData cdata = { false, NULL, NULL, NULL };
    if ((mw_get_field(prompt, buf, MUTT_COMP_CLEAR, HC_FILE, &CompleteMailboxOps, &cdata) != 0) ||
        buf_is_empty(buf))
    {
      goto cleanup;
    }
 
    prompt = NULL;
    buf_expand_path(buf);
 
    bool is_message = (fp && has_a_message(body));
 
    if (is_message)
    {
      struct stat st = { 0 };
 
      /* check to make sure that this file is really the one the user wants */
      rc = mutt_save_confirm(buf_string(buf), &st);
      if (rc == 1)
      {
        prompt = _("Save to file: ");
        continue;
      }
      else if (rc == -1)
      {
        goto cleanup;
      }
      buf_copy(tfile, buf);
    }
    else
    {
      rc = mutt_check_overwrite(body->filename, buf_string(buf), tfile, &opt, directory);
      if (rc == -1)
      {
        goto cleanup;
      }
      else if (rc == 1)
      {
        prompt = _("Save to file: ");
        continue;
      }
    }
 
    mutt_message(_("Saving..."));
    if (save_attachment_flowed_helper(fp, body, buf_string(tfile), opt,
                                      (e || !is_message) ? e : body->email) == 0)
    {
      // This uses ngettext to avoid duplication of messages
      const int num = 1;
      mutt_message(ngettext("Attachment saved", "%d attachments saved", num), num);
      rc = 0;
      goto cleanup;
    }
    else
    {
      prompt = _("Save to file: ");
      continue;
    }
  }
 
cleanup:
  buf_pool_release(&buf);
  buf_pool_release(&tfile);
  return rc;
}

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save_without_prompting()

static int save_without_prompting ( FILE *  fp, struct Body *  body, struct Email *  e  )

static

Save the attachment, without prompting each time.

Parameters

[in]	fp	File handle to the attachment (OPTIONAL)
[in]	body	Attachment
[in]	e	Email

Return values

0	Success
-1	Failure

Definition at line 379 of file recvattach.c.

{
  enum SaveAttach opt = MUTT_SAVE_NO_FLAGS;
  int rc = -1;
  struct Buffer *buf = buf_pool_get();
  struct Buffer *tfile = buf_pool_get();
 
  if (body->filename)
  {
    buf_strcpy(buf, body->filename);
  }
  else if (has_a_message(body))
  {
    mutt_default_save(buf->data, buf->dsize, body->email);
  }
 
  prepend_savedir(buf);
  buf_expand_path(buf);
 
  bool is_message = (fp && has_a_message(body));
 
  if (is_message)
  {
    buf_copy(tfile, buf);
  }
  else
  {
    rc = mutt_check_overwrite(body->filename, buf_string(buf), tfile, &opt, NULL);
    if (rc == -1) // abort or cancel
      goto cleanup;
  }
 
  rc = save_attachment_flowed_helper(fp, body, buf_string(tfile), opt,
                                     (e || !is_message) ? e : body->email);
 
cleanup:
  buf_pool_release(&buf);
  buf_pool_release(&tfile);
  return rc;
}

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mutt_save_attachment_list()

void mutt_save_attachment_list	(	struct AttachCtx *	actx,
		FILE *	fp,
		bool	tag,
		struct Body *	top,
		struct Email *	e,
		struct Menu *	menu
	)

Save a list of attachments.

Parameters

actx	Attachment context
fp	File handle for the attachment (OPTIONAL)
tag	If true, only save the tagged attachments
top	First Attachment
e	Email
menu	Menu listing attachments

Definition at line 429 of file recvattach.c.

{
  char *directory = NULL;
  int rc = 1;
  int last = menu_get_index(menu);
  FILE *fp_out = NULL;
  int saved_attachments = 0;
 
  struct Buffer *buf = buf_pool_get();
  struct Buffer *tfile = buf_pool_get();
 
  const bool c_attach_split = cs_subset_bool(NeoMutt->sub, "attach_split");
  const char *const c_attach_sep = cs_subset_string(NeoMutt->sub, "attach_sep");
  const bool c_attach_save_without_prompting = cs_subset_bool(NeoMutt->sub, "attach_save_without_prompting");
 
  for (int i = 0; !tag || (i < actx->idxlen); i++)
  {
    if (tag)
    {
      fp = actx->idx[i]->fp;
      top = actx->idx[i]->body;
    }
    if (!tag || top->tagged)
    {
      if (c_attach_split)
      {
        if (tag && menu && top->aptr)
        {
          menu_set_index(menu, top->aptr->num);
          menu_queue_redraw(menu, MENU_REDRAW_MOTION);
 
          menu_redraw(menu);
        }
        if (c_attach_save_without_prompting)
        {
          // Save each file, with no prompting, using the configured 'AttachSaveDir'
          rc = save_without_prompting(fp, top, e);
          if (rc == 0)
            saved_attachments++;
        }
        else
        {
          // Save each file, prompting the user for the location each time.
          if (query_save_attachment(fp, top, e, &directory) == -1)
            break;
        }
      }
      else
      {
        enum SaveAttach opt = MUTT_SAVE_NO_FLAGS;
 
        if (buf_is_empty(buf))
        {
          buf_strcpy(buf, mutt_path_basename(NONULL(top->filename)));
          prepend_savedir(buf);
 
          struct FileCompletionData cdata = { false, NULL, NULL, NULL };
          if ((mw_get_field(_("Save to file: "), buf, MUTT_COMP_CLEAR, HC_FILE,
                            &CompleteMailboxOps, &cdata) != 0) ||
              buf_is_empty(buf))
          {
            goto cleanup;
          }
          buf_expand_path(buf);
          if (mutt_check_overwrite(top->filename, buf_string(buf), tfile, &opt, NULL))
            goto cleanup;
        }
        else
        {
          opt = MUTT_SAVE_APPEND;
        }
 
        rc = save_attachment_flowed_helper(fp, top, buf_string(tfile), opt, e);
        if ((rc == 0) && c_attach_sep && (fp_out = fopen(buf_string(tfile), "a")))
        {
          fprintf(fp_out, "%s", c_attach_sep);
          mutt_file_fclose(&fp_out);
        }
      }
    }
    if (!tag)
      break;
  }
 
  FREE(&directory);
 
  if (tag && menu)
  {
    menu_set_index(menu, last);
    menu_queue_redraw(menu, MENU_REDRAW_MOTION);
  }
 
  if (rc == 0)
  {
    if (!c_attach_split)
      saved_attachments = 1;
 
    if (!c_attach_split || c_attach_save_without_prompting)
    {
      mutt_message(ngettext("Attachment saved", "%d attachments saved", saved_attachments),
                   saved_attachments);
    }
  }
 
cleanup:
  buf_pool_release(&buf);
  buf_pool_release(&tfile);
}

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query_pipe_attachment()

static void query_pipe_attachment ( const char *  command, FILE *  fp, struct Body *  body, bool  filter  )

static

Ask the user if we should pipe the attachment.

Parameters

command	Command to pipe the attachment to
fp	File handle to the attachment (OPTIONAL)
body	Attachment
filter	Is this command a filter?

Definition at line 546 of file recvattach.c.

{
  struct Buffer *tfile = buf_pool_get();
 
  if (filter)
  {
    char warning[PATH_MAX + 256];
    snprintf(warning, sizeof(warning),
             _("WARNING!  You are about to overwrite %s, continue?"), body->filename);
    if (query_yesorno(warning, MUTT_NO) != MUTT_YES)
    {
      msgwin_clear_text(NULL);
      buf_pool_release(&tfile);
      return;
    }
    buf_mktemp(tfile);
  }
 
  if (mutt_pipe_attachment(fp, body, command, buf_string(tfile)))
  {
    if (filter)
    {
      mutt_file_unlink(body->filename);
      mutt_file_rename(buf_string(tfile), body->filename);
      mutt_update_encoding(body, NeoMutt->sub);
      mutt_message(_("Attachment filtered"));
    }
  }
  else
  {
    if (filter && !buf_is_empty(tfile))
      mutt_file_unlink(buf_string(tfile));
  }
  buf_pool_release(&tfile);
}

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pipe_attachment()

static void pipe_attachment ( FILE *  fp, struct Body *  b, struct State *  state  )

static

Pipe the attachment to a command.

Parameters

fp	File handle to the attachment (OPTIONAL)
b	Attachment
state	File state for decoding the attachment

Definition at line 588 of file recvattach.c.

{
  if (!state || !state->fp_out)
    return;
 
  FILE *fp_in = NULL;
  FILE *fp_unstuff = NULL;
  bool is_flowed = false, unlink_unstuff = false;
  struct Buffer *unstuff_tempfile = NULL;
 
  if (mutt_rfc3676_is_format_flowed(b))
  {
    is_flowed = true;
    unstuff_tempfile = buf_pool_get();
    buf_mktemp(unstuff_tempfile);
  }
 
  if (fp)
  {
    state->fp_in = fp;
 
    if (is_flowed)
    {
      fp_unstuff = mutt_file_fopen(buf_string(unstuff_tempfile), "w");
      if (!fp_unstuff)
      {
        mutt_perror("mutt_file_fopen");
        goto bail;
      }
      unlink_unstuff = true;
 
      FILE *filter_fp = state->fp_out;
      state->fp_out = fp_unstuff;
      mutt_decode_attachment(b, state);
      mutt_file_fclose(&fp_unstuff);
      state->fp_out = filter_fp;
 
      fp_unstuff = mutt_file_fopen(buf_string(unstuff_tempfile), "r");
      if (!fp_unstuff)
      {
        mutt_perror("mutt_file_fopen");
        goto bail;
      }
      mutt_file_copy_stream(fp_unstuff, filter_fp);
      mutt_file_fclose(&fp_unstuff);
    }
    else
    {
      mutt_decode_attachment(b, state);
    }
  }
  else
  {
    const char *infile = NULL;
 
    if (is_flowed)
    {
      if (mutt_save_attachment(fp, b, buf_string(unstuff_tempfile), 0, NULL) == -1)
        goto bail;
      unlink_unstuff = true;
      mutt_rfc3676_space_unstuff_attachment(b, buf_string(unstuff_tempfile));
      infile = buf_string(unstuff_tempfile);
    }
    else
    {
      infile = b->filename;
    }
 
    fp_in = fopen(infile, "r");
    if (!fp_in)
    {
      mutt_perror("fopen");
      goto bail;
    }
    mutt_file_copy_stream(fp_in, state->fp_out);
    mutt_file_fclose(&fp_in);
  }
 
  const char *const c_attach_sep = cs_subset_string(NeoMutt->sub, "attach_sep");
  if (c_attach_sep)
    state_puts(state, c_attach_sep);
 
bail:
  mutt_file_fclose(&fp_unstuff);
  mutt_file_fclose(&fp_in);
 
  if (unlink_unstuff)
    mutt_file_unlink(buf_string(unstuff_tempfile));
  buf_pool_release(&unstuff_tempfile);
}

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pipe_attachment_list()

static void pipe_attachment_list ( const char *  command, struct AttachCtx *  actx, FILE *  fp, bool  tag, struct Body *  top, bool  filter, struct State *  state  )

static

Pipe a list of attachments to a command.

Parameters

command	Command to pipe the attachment to
actx	Attachment context
fp	File handle to the attachment (OPTIONAL)
tag	If true, only save the tagged attachments
top	First Attachment
filter	Is this command a filter?
state	File state for decoding the attachments

Definition at line 689 of file recvattach.c.

{
  const bool c_attach_split = cs_subset_bool(NeoMutt->sub, "attach_split");
  for (int i = 0; !tag || (i < actx->idxlen); i++)
  {
    if (tag)
    {
      fp = actx->idx[i]->fp;
      top = actx->idx[i]->body;
    }
    if (!tag || top->tagged)
    {
      if (!filter && !c_attach_split)
        pipe_attachment(fp, top, state);
      else
        query_pipe_attachment(command, fp, top, filter);
    }
    if (!tag)
      break;
  }
}

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mutt_pipe_attachment_list()

void mutt_pipe_attachment_list	(	struct AttachCtx *	actx,
		FILE *	fp,
		bool	tag,
		struct Body *	top,
		bool	filter
	)

Pipe a list of attachments to a command.

Parameters

actx	Attachment context
fp	File handle to the attachment (OPTIONAL)
tag	If true, only save the tagged attachments
top	First Attachment
filter	Is this command a filter?

Definition at line 721 of file recvattach.c.

{
  struct State state = { 0 };
  struct Buffer *buf = NULL;
 
  if (fp)
    filter = false; /* sanity check: we can't filter in the recv case yet */
 
  buf = buf_pool_get();
  /* perform charset conversion on text attachments when piping */
  state.flags = STATE_CHARCONV;
 
  if (mw_get_field((filter ? _("Filter through: ") : _("Pipe to: ")), buf,
                   MUTT_COMP_NO_FLAGS, HC_COMMAND, &CompleteFileOps, NULL) != 0)
  {
    goto cleanup;
  }
 
  if (buf_len(buf) == 0)
    goto cleanup;
 
  buf_expand_path(buf);
 
  const bool c_attach_split = cs_subset_bool(NeoMutt->sub, "attach_split");
  if (!filter && !c_attach_split)
  {
    mutt_endwin();
    pid_t pid = filter_create(buf_string(buf), &state.fp_out, NULL, NULL, EnvList);
    pipe_attachment_list(buf_string(buf), actx, fp, tag, top, filter, &state);
    mutt_file_fclose(&state.fp_out);
    const bool c_wait_key = cs_subset_bool(NeoMutt->sub, "wait_key");
    if ((filter_wait(pid) != 0) || c_wait_key)
      mutt_any_key_to_continue(NULL);
  }
  else
  {
    pipe_attachment_list(buf_string(buf), actx, fp, tag, top, filter, &state);
  }
 
cleanup:
  buf_pool_release(&buf);
}

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can_print()

static bool can_print ( struct AttachCtx *  actx, struct Body *  top, bool  tag  )

static

Do we know how to print this attachment type?

Parameters

actx	Attachment
top	Body of email
tag	Apply to all tagged Attachments

Return values

true	(all) the Attachment(s) are printable

Definition at line 772 of file recvattach.c.

{
  char type[256] = { 0 };
 
  for (int i = 0; !tag || (i < actx->idxlen); i++)
  {
    if (tag)
      top = actx->idx[i]->body;
    snprintf(type, sizeof(type), "%s/%s", TYPE(top), top->subtype);
    if (!tag || top->tagged)
    {
      if (!mailcap_lookup(top, type, sizeof(type), NULL, MUTT_MC_PRINT))
      {
        if (!mutt_istr_equal("text/plain", top->subtype) &&
            !mutt_istr_equal("application/postscript", top->subtype))
        {
          if (!mutt_can_decode(top))
          {
            /* L10N: s gets replaced by a MIME type, e.g. "text/plain" or
               application/octet-stream.  */
            mutt_error(_("I don't know how to print %s attachments"), type);
            return false;
          }
        }
      }
    }
    if (!tag)
      break;
  }
  return true;
}

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print_attachment_list()

static void print_attachment_list ( struct AttachCtx *  actx, FILE *  fp, bool  tag, struct Body *  top, struct State *  state  )

static

Print a list of Attachments.

Parameters

actx	Attachment context
fp	File handle to the attachment (OPTIONAL)
tag	Apply to all tagged Attachments
top	First Attachment
state	File state for decoding the attachments

Definition at line 812 of file recvattach.c.

{
  char type[256] = { 0 };
 
  const bool c_attach_split = cs_subset_bool(NeoMutt->sub, "attach_split");
  const char *const c_attach_sep = cs_subset_string(NeoMutt->sub, "attach_sep");
 
  for (int i = 0; !tag || (i < actx->idxlen); i++)
  {
    if (tag)
    {
      fp = actx->idx[i]->fp;
      top = actx->idx[i]->body;
    }
    if (!tag || top->tagged)
    {
      snprintf(type, sizeof(type), "%s/%s", TYPE(top), top->subtype);
      if (!c_attach_split && !mailcap_lookup(top, type, sizeof(type), NULL, MUTT_MC_PRINT))
      {
        if (mutt_istr_equal("text/plain", top->subtype) ||
            mutt_istr_equal("application/postscript", top->subtype))
        {
          pipe_attachment(fp, top, state);
        }
        else if (mutt_can_decode(top))
        {
          /* decode and print */
 
          FILE *fp_in = NULL;
          struct Buffer *newfile = buf_pool_get();
 
          buf_mktemp(newfile);
          if (mutt_decode_save_attachment(fp, top, buf_string(newfile),
                                          STATE_PRINTING, MUTT_SAVE_NO_FLAGS) == 0)
          {
            if (!state->fp_out)
            {
              mutt_error("BUG in print_attachment_list().  Please report this. ");
              return;
            }
 
            fp_in = fopen(buf_string(newfile), "r");
            if (fp_in)
            {
              mutt_file_copy_stream(fp_in, state->fp_out);
              mutt_file_fclose(&fp_in);
              if (c_attach_sep)
                state_puts(state, c_attach_sep);
            }
          }
          mutt_file_unlink(buf_string(newfile));
          buf_pool_release(&newfile);
        }
      }
      else
      {
        mutt_print_attachment(fp, top);
      }
    }
    if (!tag)
      break;
  }
}

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mutt_print_attachment_list()

void mutt_print_attachment_list	(	struct AttachCtx *	actx,
		FILE *	fp,
		bool	tag,
		struct Body *	top
	)

Print a list of Attachments.

Parameters

actx	Attachment context
fp	File handle to the attachment (OPTIONAL)
tag	Apply to all tagged Attachments
top	First Attachment

Definition at line 884 of file recvattach.c.

{
  char prompt[128] = { 0 };
  struct State state = { 0 };
  int tagmsgcount = 0;
 
  if (tag)
    for (int i = 0; i < actx->idxlen; i++)
      if (actx->idx[i]->body->tagged)
        tagmsgcount++;
 
  snprintf(prompt, sizeof(prompt),
           tag ? ngettext("Print tagged attachment?", "Print %d tagged attachments?", tagmsgcount) :
                 _("Print attachment?"),
           tagmsgcount);
  if (query_quadoption(prompt, NeoMutt->sub, "print") != MUTT_YES)
    return;
 
  const bool c_attach_split = cs_subset_bool(NeoMutt->sub, "attach_split");
  if (c_attach_split)
  {
    print_attachment_list(actx, fp, tag, top, &state);
  }
  else
  {
    if (!can_print(actx, top, tag))
      return;
    mutt_endwin();
    const char *const c_print_command = cs_subset_string(NeoMutt->sub, "print_command");
    pid_t pid = filter_create(NONULL(c_print_command), &state.fp_out, NULL, NULL, EnvList);
    print_attachment_list(actx, fp, tag, top, &state);
    mutt_file_fclose(&state.fp_out);
    const bool c_wait_key = cs_subset_bool(NeoMutt->sub, "wait_key");
    if ((filter_wait(pid) != 0) || c_wait_key)
      mutt_any_key_to_continue(NULL);
  }
}

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recvattach_edit_content_type()

void recvattach_edit_content_type	(	struct AttachCtx *	actx,
		struct Menu *	menu,
		struct Email *	e
	)

Edit the content type of an attachment.

Parameters

actx	Attachment context
menu	Menu listing Attachments
e	Email

Definition at line 928 of file recvattach.c.

{
  struct AttachPtr *cur_att = current_attachment(actx, menu);
  if (!mutt_edit_content_type(e, cur_att->body, cur_att->fp))
    return;
 
  /* The mutt_update_recvattach_menu() will overwrite any changes
   * made to a decrypted cur_att->body, so warn the user. */
  if (cur_att->decrypted)
  {
    mutt_message(_("Structural changes to decrypted attachments are not supported"));
    mutt_sleep(1);
  }
  /* Editing the content type can rewrite the body structure. */
  for (int i = 0; i < actx->idxlen; i++)
    actx->idx[i]->body = NULL;
  mutt_actx_entries_free(actx);
  mutt_update_recvattach_menu(actx, menu, true);
}

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mutt_attach_display_loop()

int mutt_attach_display_loop	(	struct ConfigSubset *	sub,
		struct Menu *	menu,
		int	op,
		struct Email *	e,
		struct AttachCtx *	actx,
		bool	recv
	)

Event loop for the Attachment menu.

Parameters

sub	Config Subset
menu	Menu listing Attachments
op	Operation, e.g. OP_ATTACHMENT_VIEW
e	Email
actx	Attachment context
recv	true if these are received attachments (rather than in compose)

Return values

num	Operation performed

Definition at line 958 of file recvattach.c.

{
  do
  {
    switch (op)
    {
      case OP_DISPLAY_HEADERS:
        bool_str_toggle(NeoMutt->sub, "weed", NULL);
        /* fallthrough */
 
      case OP_ATTACHMENT_VIEW:
      {
        struct AttachPtr *cur_att = current_attachment(actx, menu);
        if (!cur_att->fp)
        {
          if (cur_att->body->type == TYPE_MULTIPART)
          {
            struct Body *b = cur_att->body->parts;
            while (b->parts)
              b = b->parts;
            cur_att = b->aptr;
          }
        }
        op = mutt_view_attachment(cur_att->fp, cur_att->body, MUTT_VA_REGULAR,
                                  e, actx, menu->win);
        break;
      }
 
      case OP_NEXT_ENTRY:
      case OP_MAIN_NEXT_UNDELETED: /* hack */
      {
        const int index = menu_get_index(menu) + 1;
        if (index < menu->max)
        {
          menu_set_index(menu, index);
          op = OP_ATTACHMENT_VIEW;
        }
        else
        {
          op = OP_NULL;
        }
        break;
      }
 
      case OP_PREV_ENTRY:
      case OP_MAIN_PREV_UNDELETED: /* hack */
      {
        const int index = menu_get_index(menu) - 1;
        if (index >= 0)
        {
          menu_set_index(menu, index);
          op = OP_ATTACHMENT_VIEW;
        }
        else
        {
          op = OP_NULL;
        }
        break;
      }
 
      case OP_ATTACHMENT_EDIT_TYPE:
      {
        struct AttachPtr *cur_att = current_attachment(actx, menu);
        /* when we edit the content-type, we should redisplay the attachment
         * immediately */
        mutt_edit_content_type(e, cur_att->body, cur_att->fp);
        if (recv)
          recvattach_edit_content_type(actx, menu, e);
        else
          mutt_edit_content_type(e, cur_att->body, cur_att->fp);
 
        menu_queue_redraw(menu, MENU_REDRAW_INDEX);
        op = OP_ATTACHMENT_VIEW;
        break;
      }
      /* functions which are passed through from the pager */
      case OP_PIPE:
      {
        struct AttachPtr *cur_att = current_attachment(actx, menu);
        mutt_pipe_attachment_list(actx, cur_att->fp, false, cur_att->body, false);
        op = OP_ATTACHMENT_VIEW;
        break;
      }
      case OP_ATTACHMENT_PRINT:
      {
        struct AttachPtr *cur_att = current_attachment(actx, menu);
        mutt_print_attachment_list(actx, cur_att->fp, false, cur_att->body);
        op = OP_ATTACHMENT_VIEW;
        break;
      }
      case OP_ATTACHMENT_SAVE:
      {
        struct AttachPtr *cur_att = current_attachment(actx, menu);
        mutt_save_attachment_list(actx, cur_att->fp, false, cur_att->body, e, NULL);
        op = OP_ATTACHMENT_VIEW;
        break;
      }
      case OP_CHECK_TRADITIONAL:
        if (!(WithCrypto & APPLICATION_PGP) || (e && e->security & PGP_TRADITIONAL_CHECKED))
        {
          op = OP_NULL;
          break;
        }
      /* fallthrough */
      case OP_ATTACHMENT_COLLAPSE:
        if (recv)
          return op;
      /* fallthrough */
      default:
        op = OP_NULL;
    }
  } while (op != OP_NULL);
 
  return op;
}

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mutt_generate_recvattach_list()

void mutt_generate_recvattach_list	(	struct AttachCtx *	actx,
		struct Email *	e,
		struct Body *	parts,
		FILE *	fp,
		int	parent_type,
		int	level,
		bool	decrypted
	)

Create a list of attachments.

Parameters

actx	Attachment context
e	Email
parts	Body of email
fp	File to read from
parent_type	Type, e.g. TYPE_MULTIPART
level	Attachment depth
decrypted	True if attachment has been decrypted

Definition at line 1085 of file recvattach.c.

{
  struct Body *m = NULL;
  struct Body *new_body = NULL;
  FILE *fp_new = NULL;
  SecurityFlags type;
 
  for (m = parts; m; m = m->next)
  {
    bool need_secured = false;
    bool secured = false;
 
    if (((WithCrypto & APPLICATION_SMIME) != 0) && (type = mutt_is_application_smime(m)))
    {
      need_secured = true;
 
      if (type & SEC_ENCRYPT)
      {
        if (!crypt_valid_passphrase(APPLICATION_SMIME))
          goto decrypt_failed;
 
        if (e->env)
          crypt_smime_getkeys(e->env);
      }
 
      secured = (crypt_smime_decrypt_mime(fp, &fp_new, m, &new_body) == 0);
      /* If the decrypt/verify-opaque doesn't generate mime output, an empty
       * text/plain type will still be returned by mutt_read_mime_header().
       * We can't distinguish an actual part from a failure, so only use a
       * text/plain that results from a single top-level part. */
      if (secured && (new_body->type == TYPE_TEXT) &&
          mutt_istr_equal("plain", new_body->subtype) && ((parts != m) || m->next))
      {
        mutt_body_free(&new_body);
        mutt_file_fclose(&fp_new);
        goto decrypt_failed;
      }
 
      if (secured && (type & SEC_ENCRYPT))
        e->security |= SMIME_ENCRYPT;
    }
 
    if (((WithCrypto & APPLICATION_PGP) != 0) &&
        (mutt_is_multipart_encrypted(m) || mutt_is_malformed_multipart_pgp_encrypted(m)))
    {
      need_secured = true;
 
      if (!crypt_valid_passphrase(APPLICATION_PGP))
        goto decrypt_failed;
 
      secured = (crypt_pgp_decrypt_mime(fp, &fp_new, m, &new_body) == 0);
 
      if (secured)
        e->security |= PGP_ENCRYPT;
    }
 
    if (need_secured && secured)
    {
      mutt_actx_add_fp(actx, fp_new);
      mutt_actx_add_body(actx, new_body);
      mutt_generate_recvattach_list(actx, e, new_body, fp_new, parent_type, level, 1);
      continue;
    }
 
  decrypt_failed:
    /* Fall through and show the original parts if decryption fails */
    if (need_secured && !secured)
      mutt_error(_("Can't decrypt encrypted message"));
 
    struct AttachPtr *ap = mutt_aptr_new();
    mutt_actx_add_attach(actx, ap);
 
    ap->body = m;
    ap->fp = fp;
    m->aptr = ap;
    ap->parent_type = parent_type;
    ap->level = level;
    ap->decrypted = decrypted;
 
    if (mutt_is_message_type(m->type, m->subtype))
    {
      mutt_generate_recvattach_list(actx, m->email, m->parts, fp, m->type,
                                    level + 1, decrypted);
      e->security |= m->email->security;
    }
    else
    {
      mutt_generate_recvattach_list(actx, e, m->parts, fp, m->type, level + 1, decrypted);
    }
  }
}

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mutt_attach_init()

void mutt_attach_init

(

struct AttachCtx *

actx

)

Create a new Attachment context.

Parameters

actx	Attachment context

Definition at line 1183 of file recvattach.c.

{
  /* Collapse the attachments if '$digest_collapse' is set AND if...
   * the outer container is of type 'multipart/digest' */
  bool digest = mutt_istr_equal(actx->email->body->subtype, "digest");
 
  const bool c_digest_collapse = cs_subset_bool(NeoMutt->sub, "digest_collapse");
  for (int i = 0; i < actx->idxlen; i++)
  {
    actx->idx[i]->body->tagged = false;
 
    /* OR an inner container is of type 'multipart/digest' */
    actx->idx[i]->collapsed = (c_digest_collapse &&
                               (digest ||
                                ((actx->idx[i]->body->type == TYPE_MULTIPART) &&
                                 mutt_istr_equal(actx->idx[i]->body->subtype, "digest"))));
  }
}

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mutt_update_recvattach_menu()

void mutt_update_recvattach_menu	(	struct AttachCtx *	actx,
		struct Menu *	menu,
		bool	init
	)

Update the Attachment Menu.

Parameters

actx	Attachment context
menu	Menu listing Attachments
init	If true, create a new Attachments context

Definition at line 1208 of file recvattach.c.

{
  if (init)
  {
    mutt_generate_recvattach_list(actx, actx->email, actx->email->body,
                                  actx->fp_root, -1, 0, 0);
    mutt_attach_init(actx);
  }
 
  mutt_update_tree(actx);
 
  menu->max = actx->vcount;
 
  const int index = menu_get_index(menu);
  if (index >= menu->max)
    menu_set_index(menu, menu->max - 1);
  menu_queue_redraw(menu, MENU_REDRAW_INDEX);
}

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ba_add_tagged()

int ba_add_tagged	(	struct BodyArray *	ba,
		struct AttachCtx *	actx,
		struct Menu *	menu
	)

Get an array of tagged Attachments.

Parameters

ba	Empty BodyArray to populate
actx	List of Attachments
menu	Menu

Return values

num	Number of selected Attachments
-1	Error

Definition at line 1235 of file recvattach.c.

{
  if (!ba || !actx || !menu)
    return -1;
 
  if (menu->tag_prefix)
  {
    for (int i = 0; i < actx->idxlen; i++)
    {
      struct Body *b = actx->idx[i]->body;
      if (b->tagged)
      {
        ARRAY_ADD(ba, b);
      }
    }
  }
  else
  {
    struct AttachPtr *cur = current_attachment(actx, menu);
    if (!cur)
      return -1;
 
    ARRAY_ADD(ba, cur->body);
  }
 
  return ARRAY_SIZE(ba);
}

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