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mutt_attach.c
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/**
* @file
* Handling of email attachments
*
* @authors
* Copyright (C) 1996-2000,2002,2013 Michael R. Elkins <[email protected]>
* Copyright (C) 1999-2004,2006 Thomas Roessler <[email protected]>
*
* @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/>.
*/
/**
* @page mutt_attach Handling of email attachments
*
* Handling of email attachments
*/
#include "config.h"
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <unistd.h>
#include "mutt/mutt.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "mutt_attach.h"
#include "context.h"
#include "copy.h"
#include "globals.h"
#include "handler.h"
#include "mailcap.h"
#include "muttlib.h"
#include "mx.h"
#include "ncrypt/ncrypt.h"
#include "options.h"
#include "pager.h"
#include "protos.h"
#include "sendlib.h"
#include "state.h"
#ifdef USE_IMAP
#include "imap/imap.h"
#endif
/**
* mutt_get_tmp_attachment - Get a temporary copy of an attachment
* @param a Attachment to copy
* @retval 0 Success
* @retval -1 Error
*/
int mutt_get_tmp_attachment(struct Body *a)
{
char type[256];
struct stat st;
if (a->unlink)
return 0;
struct Buffer *tmpfile = mutt_buffer_pool_get();
struct MailcapEntry *entry = mailcap_entry_new();
snprintf(type, sizeof(type), "%s/%s", TYPE(a), a->subtype);
mailcap_lookup(a, type, sizeof(type), entry, MUTT_MC_NO_FLAGS);
mailcap_expand_filename(entry->nametemplate, a->filename, tmpfile);
mailcap_entry_free(&entry);
if (stat(a->filename, &st) == -1)
{
mutt_buffer_pool_release(&tmpfile);
return -1;
}
FILE *fp_in = NULL, *fp_out = NULL;
if ((fp_in = fopen(a->filename, "r")) &&
(fp_out = mutt_file_fopen(mutt_b2s(tmpfile), "w")))
{
mutt_file_copy_stream(fp_in, fp_out);
mutt_str_replace(&a->filename, mutt_b2s(tmpfile));
a->unlink = true;
if (a->stamp >= st.st_mtime)
mutt_stamp_attachment(a);
}
else
mutt_perror(fp_in ? mutt_b2s(tmpfile) : a->filename);
mutt_file_fclose(&fp_in);
mutt_file_fclose(&fp_out);
mutt_buffer_pool_release(&tmpfile);
return a->unlink ? 0 : -1;
}
/**
* mutt_compose_attachment - Create an attachment
* @param a Body of email
* @retval 1 if require full screen redraw
* @retval 0 otherwise
*/
int mutt_compose_attachment(struct Body *a)
{
char type[256];
struct MailcapEntry *entry = mailcap_entry_new();
bool unlink_newfile = false;
int rc = 0;
struct Buffer *cmd = mutt_buffer_pool_get();
struct Buffer *newfile = mutt_buffer_pool_get();
struct Buffer *tmpfile = mutt_buffer_pool_get();
snprintf(type, sizeof(type), "%s/%s", TYPE(a), a->subtype);
if (mailcap_lookup(a, type, sizeof(type), entry, MUTT_MC_COMPOSE))
{
if (entry->composecommand || entry->composetypecommand)
{
if (entry->composetypecommand)
mutt_buffer_strcpy(cmd, entry->composetypecommand);
else
mutt_buffer_strcpy(cmd, entry->composecommand);
mailcap_expand_filename(entry->nametemplate, a->filename, newfile);
mutt_debug(LL_DEBUG1, "oldfile: %s\t newfile: %s\n", a->filename, mutt_b2s(newfile));
if (mutt_file_symlink(a->filename, mutt_b2s(newfile)) == -1)
{
if (mutt_yesorno(_("Can't match 'nametemplate', continue?"), MUTT_YES) != MUTT_YES)
goto bailout;
mutt_buffer_strcpy(newfile, a->filename);
}
else
unlink_newfile = true;
if (mailcap_expand_command(a, mutt_b2s(newfile), type, cmd))
{
/* For now, editing requires a file, no piping */
mutt_error(_("Mailcap compose entry requires %%s"));
}
else
{
int r;
mutt_endwin();
r = mutt_system(mutt_b2s(cmd));
if (r == -1)
mutt_error(_("Error running \"%s\""), mutt_b2s(cmd));
if ((r != -1) && entry->composetypecommand)
{
struct Body *b = NULL;
FILE *fp = mutt_file_fopen(a->filename, "r");
if (!fp)
{
mutt_perror(_("Failure to open file to parse headers"));
goto bailout;
}
b = mutt_read_mime_header(fp, 0);
if (b)
{
if (!TAILQ_EMPTY(&b->parameter))
{
mutt_param_free(&a->parameter);
a->parameter = b->parameter;
TAILQ_INIT(&b->parameter);
}
if (b->description)
{
FREE(&a->description);
a->description = b->description;
b->description = NULL;
}
if (b->form_name)
{
FREE(&a->form_name);
a->form_name = b->form_name;
b->form_name = NULL;
}
/* Remove headers by copying out data to another file, then
* copying the file back */
fseeko(fp, b->offset, SEEK_SET);
mutt_body_free(&b);
mutt_buffer_mktemp(tmpfile);
FILE *fp_tmp = mutt_file_fopen(mutt_b2s(tmpfile), "w");
if (!fp_tmp)
{
mutt_perror(_("Failure to open file to strip headers"));
mutt_file_fclose(&fp);
goto bailout;
}
mutt_file_copy_stream(fp, fp_tmp);
mutt_file_fclose(&fp);
mutt_file_fclose(&fp_tmp);
mutt_file_unlink(a->filename);
if (mutt_file_rename(mutt_b2s(tmpfile), a->filename) != 0)
{
mutt_perror(_("Failure to rename file"));
goto bailout;
}
}
}
}
}
}
else
{
mutt_message(_("No mailcap compose entry for %s, creating empty file"), type);
rc = 1;
goto bailout;
}
rc = 1;
bailout:
if (unlink_newfile)
unlink(mutt_b2s(newfile));
mutt_buffer_pool_release(&cmd);
mutt_buffer_pool_release(&newfile);
mutt_buffer_pool_release(&tmpfile);
mailcap_entry_free(&entry);
return rc;
}
/**
* mutt_edit_attachment - Edit an attachment
* @param a Email containing attachment
* @retval 1 if editor found
* @retval 0 if not
*
* Currently, this only works for send mode, as it assumes that the
* Body->filename actually contains the information. I'm not sure
* we want to deal with editing attachments we've already received,
* so this should be ok.
*
* Returning 0 is useful to tell the calling menu to redraw
*/
int mutt_edit_attachment(struct Body *a)
{
char type[256];
struct MailcapEntry *entry = mailcap_entry_new();
bool unlink_newfile = false;
int rc = 0;
struct Buffer *cmd = mutt_buffer_pool_get();
struct Buffer *newfile = mutt_buffer_pool_get();
snprintf(type, sizeof(type), "%s/%s", TYPE(a), a->subtype);
if (mailcap_lookup(a, type, sizeof(type), entry, MUTT_MC_EDIT))
{
if (entry->editcommand)
{
mutt_buffer_strcpy(cmd, entry->editcommand);
mailcap_expand_filename(entry->nametemplate, a->filename, newfile);
mutt_debug(LL_DEBUG1, "oldfile: %s\t newfile: %s\n", a->filename, mutt_b2s(newfile));
if (mutt_file_symlink(a->filename, mutt_b2s(newfile)) == -1)
{
if (mutt_yesorno(_("Can't match 'nametemplate', continue?"), MUTT_YES) != MUTT_YES)
goto bailout;
mutt_buffer_strcpy(newfile, a->filename);
}
else
unlink_newfile = true;
if (mailcap_expand_command(a, mutt_b2s(newfile), type, cmd))
{
/* For now, editing requires a file, no piping */
mutt_error(_("Mailcap Edit entry requires %%s"));
goto bailout;
}
else
{
mutt_endwin();
if (mutt_system(mutt_b2s(cmd)) == -1)
{
mutt_error(_("Error running \"%s\""), mutt_b2s(cmd));
goto bailout;
}
}
}
}
else if (a->type == TYPE_TEXT)
{
/* On text, default to editor */
mutt_edit_file(NONULL(C_Editor), a->filename);
}
else
{
mutt_error(_("No mailcap edit entry for %s"), type);
rc = 0;
goto bailout;
}
rc = 1;
bailout:
if (unlink_newfile)
unlink(mutt_b2s(newfile));
mutt_buffer_pool_release(&cmd);
mutt_buffer_pool_release(&newfile);
mailcap_entry_free(&entry);
return rc;
}
/**
* mutt_check_lookup_list - Update the mime type
* @param b Message attachment body
* @param type Buffer with mime type of attachment in "type/subtype" format
* @param len Buffer length
*/
void mutt_check_lookup_list(struct Body *b, char *type, size_t len)
{
struct ListNode *np = NULL;
STAILQ_FOREACH(np, &MimeLookupList, entries)
{
const int i = mutt_str_strlen(np->data) - 1;
if (((i > 0) && (np->data[i - 1] == '/') && (np->data[i] == '*') &&
(mutt_str_strncasecmp(type, np->data, i) == 0)) ||
(mutt_str_strcasecmp(type, np->data) == 0))
{
struct Body tmp = { 0 };
enum ContentType n;
if ((n = mutt_lookup_mime_type(&tmp, b->filename)) != TYPE_OTHER ||
(n = mutt_lookup_mime_type(&tmp, b->description)) != TYPE_OTHER)
{
snprintf(type, len, "%s/%s",
(n == TYPE_AUDIO) ?
"audio" :
(n == TYPE_APPLICATION) ?
"application" :
(n == TYPE_IMAGE) ?
"image" :
(n == TYPE_MESSAGE) ?
"message" :
(n == TYPE_MODEL) ?
"model" :
(n == TYPE_MULTIPART) ?
"multipart" :
(n == TYPE_TEXT) ? "text" : (n == TYPE_VIDEO) ? "video" : "other",
tmp.subtype);
mutt_debug(LL_DEBUG1, "\"%s\" -> %s\n", b->filename, type);
}
FREE(&tmp.subtype);
FREE(&tmp.xtype);
}
}
}
/**
* wait_interactive_filter - Wait after an interactive filter
* @param pid Process id of the process to wait for
* @retval num Exit status of the process identified by pid
* @retval -1 Error
*
* This is used for filters that are actually interactive commands
* with input piped in: e.g. in mutt_view_attachment(), a mailcap
* entry without copiousoutput _and_ without a %s.
*
* For those cases, we treat it like a blocking system command, and
* poll IMAP to keep connections open.
*/
static int wait_interactive_filter(pid_t pid)
{
int rc;
#ifdef USE_IMAP
rc = imap_wait_keepalive(pid);
#else
waitpid(pid, &rc, 0);
#endif
mutt_sig_unblock_system(true);
rc = WIFEXITED(rc) ? WEXITSTATUS(rc) : -1;
return rc;
}
/**
* mutt_view_attachment - View an attachment
* @param fp Source file stream. Can be NULL
* @param a The message body containing the attachment
* @param mode How the attachment should be viewed, see #ViewAttachMode
* @param e Current Email. Can be NULL
* @param actx Attachment context
* @param win Window
* @retval 0 If the viewer is run and exited successfully
* @retval -1 Error
* @retval num Return value of mutt_do_pager() when it is used
*
* Display a message attachment using the viewer program configured in mailcap.
* If there is no mailcap entry for a file type, view the image as text.
* Viewer processes are opened and waited on synchronously so viewing an
* attachment this way will block the main neomutt process until the viewer process
* exits.
*/
int mutt_view_attachment(FILE *fp, struct Body *a, enum ViewAttachMode mode,
struct Email *e, struct AttachCtx *actx, struct MuttWindow *win)
{
bool use_mailcap = false;
bool use_pipe = false;
bool use_pager = true;
char type[256];
char desc[256];
char *fname = NULL;
struct MailcapEntry *entry = NULL;
int rc = -1;
bool unlink_tempfile = false;
bool is_message = mutt_is_message_type(a->type, a->subtype);
if ((WithCrypto != 0) && is_message && a->email &&
(a->email->security & SEC_ENCRYPT) && !crypt_valid_passphrase(a->email->security))
{
return rc;
}
struct Buffer *tmpfile = mutt_buffer_pool_get();
struct Buffer *pagerfile = mutt_buffer_pool_get();
struct Buffer *cmd = mutt_buffer_pool_get();
use_mailcap =
(mode == MUTT_VA_MAILCAP || (mode == MUTT_VA_REGULAR && mutt_needs_mailcap(a)));
snprintf(type, sizeof(type), "%s/%s", TYPE(a), a->subtype);
char columns[16];
snprintf(columns, sizeof(columns), "%d", win->state.cols);
mutt_envlist_set("COLUMNS", columns, true);
if (use_mailcap)
{
entry = mailcap_entry_new();
if (!mailcap_lookup(a, type, sizeof(type), entry, MUTT_MC_NO_FLAGS))
{
if (mode == MUTT_VA_REGULAR)
{
/* fallback to view as text */
mailcap_entry_free(&entry);
mutt_error(_("No matching mailcap entry found. Viewing as text."));
mode = MUTT_VA_AS_TEXT;
use_mailcap = false;
}
else
goto return_error;
}
}
if (use_mailcap)
{
if (!entry->command)
{
mutt_error(_("MIME type not defined. Can't view attachment."));
goto return_error;
}
mutt_buffer_strcpy(cmd, entry->command);
if (fp)
{
fname = mutt_str_strdup(a->filename);
mutt_file_sanitize_filename(fname, true);
}
else
fname = a->filename;
mailcap_expand_filename(entry->nametemplate, fname, tmpfile);
/* send case: the file is already there; symlink to it */
if (!fp)
{
if (mutt_file_symlink(a->filename, mutt_b2s(tmpfile)) == -1)
{
if (mutt_yesorno(_("Can't match 'nametemplate', continue?"), MUTT_YES) != MUTT_YES)
goto return_error;
mutt_buffer_strcpy(tmpfile, a->filename);
}
else
unlink_tempfile = true;
}
/* recv case: we need to save the attachment to a file */
else
{
FREE(&fname);
if (mutt_save_attachment(fp, a, mutt_b2s(tmpfile), MUTT_SAVE_NO_FLAGS, NULL) == -1)
goto return_error;
mutt_file_chmod(mutt_b2s(tmpfile), S_IRUSR);
}
use_pipe = mailcap_expand_command(a, mutt_b2s(tmpfile), type, cmd);
use_pager = entry->copiousoutput;
}
if (use_pager)
{
if (fp && !use_mailcap && a->filename)
{
/* recv case */
mutt_buffer_strcpy(pagerfile, a->filename);
mutt_adv_mktemp(pagerfile);
}
else
mutt_buffer_mktemp(pagerfile);
}
if (use_mailcap)
{
pid_t pid = 0;
int fd_temp = -1, fd_pager = -1;
if (!use_pager)
mutt_endwin();
if (use_pager || use_pipe)
{
if (use_pager && ((fd_pager = mutt_file_open(mutt_b2s(pagerfile),
O_CREAT | O_EXCL | O_WRONLY)) == -1))
{
mutt_perror("open");
goto return_error;
}
if (use_pipe && ((fd_temp = open(mutt_b2s(tmpfile), 0)) == -1))
{
if (fd_pager != -1)
close(fd_pager);
mutt_perror("open");
goto return_error;
}
pid = filter_create_fd(mutt_b2s(cmd), NULL, NULL, NULL,
use_pipe ? fd_temp : -1, use_pager ? fd_pager : -1, -1);
if (pid == -1)
{
if (fd_pager != -1)
close(fd_pager);
if (fd_temp != -1)
close(fd_temp);
mutt_error(_("Can't create filter"));
goto return_error;
}
if (use_pager)
{
if (a->description)
{
snprintf(desc, sizeof(desc), _("---Command: %-20.20s Description: %s"),
mutt_b2s(cmd), a->description);
}
else
{
snprintf(desc, sizeof(desc), _("---Command: %-30.30s Attachment: %s"),
mutt_b2s(cmd), type);
}
filter_wait(pid);
}
else
{
if (wait_interactive_filter(pid) || (entry->needsterminal && C_WaitKey))
mutt_any_key_to_continue(NULL);
}
if (fd_temp != -1)
close(fd_temp);
if (fd_pager != -1)
close(fd_pager);
}
else
{
/* interactive cmd */
int rv = mutt_system(mutt_b2s(cmd));
if (rv == -1)
mutt_debug(LL_DEBUG1, "Error running \"%s\"", cmd->data);
if ((rv != 0) || (entry->needsterminal && C_WaitKey))
mutt_any_key_to_continue(NULL);
}
}
else
{
/* Don't use mailcap; the attachment is viewed in the pager */
if (mode == MUTT_VA_AS_TEXT)
{
/* just let me see the raw data */
if (fp)
{
/* Viewing from a received message.
*
* Don't use mutt_save_attachment() because we want to perform charset
* conversion since this will be displayed by the internal pager. */
struct State decode_state = { 0 };
decode_state.fp_out = mutt_file_fopen(mutt_b2s(pagerfile), "w");
if (!decode_state.fp_out)
{
mutt_debug(LL_DEBUG1, "mutt_file_fopen(%s) errno=%d %s\n",
mutt_b2s(pagerfile), errno, strerror(errno));
mutt_perror(mutt_b2s(pagerfile));
goto return_error;
}
decode_state.fp_in = fp;
decode_state.flags = MUTT_CHARCONV;
mutt_decode_attachment(a, &decode_state);
if (mutt_file_fclose(&decode_state.fp_out) == EOF)
{
mutt_debug(LL_DEBUG1, "fclose(%s) errno=%d %s\n", mutt_b2s(pagerfile),
errno, strerror(errno));
}
}
else
{
/* in compose mode, just copy the file. we can't use
* mutt_decode_attachment() since it assumes the content-encoding has
* already been applied */
if (mutt_save_attachment(fp, a, mutt_b2s(pagerfile), MUTT_SAVE_NO_FLAGS, NULL))
goto return_error;
}
}
else
{
/* Use built-in handler */
OptViewAttach = true; /* disable the "use 'v' to view this part"
* message in case of error */
if (mutt_decode_save_attachment(fp, a, mutt_b2s(pagerfile), MUTT_DISPLAY, MUTT_SAVE_NO_FLAGS))
{
OptViewAttach = false;
goto return_error;
}
OptViewAttach = false;
}
if (a->description)
mutt_str_strfcpy(desc, a->description, sizeof(desc));
else if (a->filename)
snprintf(desc, sizeof(desc), _("---Attachment: %s: %s"), a->filename, type);
else
snprintf(desc, sizeof(desc), _("---Attachment: %s"), type);
}
/* We only reach this point if there have been no errors */
if (use_pager)
{
struct Pager info = { 0 };
info.fp = fp;
info.body = a;
info.ctx = Context;
info.actx = actx;
info.email = e;
rc = mutt_do_pager(desc, mutt_b2s(pagerfile),
MUTT_PAGER_ATTACHMENT | (is_message ? MUTT_PAGER_MESSAGE : MUTT_PAGER_NO_FLAGS),
&info);
mutt_buffer_reset(pagerfile);
}
else
rc = 0;
return_error:
if (!entry || !entry->xneomuttkeep)
{
if (fp && !mutt_buffer_is_empty(tmpfile))
{
/* add temporary file to TempAttachmentsList to be deleted on timeout hook */
mutt_add_temp_attachment(mutt_b2s(tmpfile));
}
else if (unlink_tempfile)
{
unlink(mutt_b2s(tmpfile));
}
}
mailcap_entry_free(&entry);
if (!mutt_buffer_is_empty(pagerfile))
mutt_file_unlink(mutt_b2s(pagerfile));
mutt_buffer_pool_release(&tmpfile);
mutt_buffer_pool_release(&pagerfile);
mutt_buffer_pool_release(&cmd);
mutt_envlist_unset("COLUMNS");
return rc;
}
/**
* mutt_pipe_attachment - Pipe an attachment to a command
* @param fp File to pipe into the command
* @param b Attachment
* @param path Path to command
* @param outfile File to save output to
* @retval 1 Success
* @retval 0 Error
*/
int mutt_pipe_attachment(FILE *fp, struct Body *b, const char *path, char *outfile)
{
pid_t pid;
int out = -1;
int rc = 0;
if (outfile && *outfile)
{
out = mutt_file_open(outfile, O_CREAT | O_EXCL | O_WRONLY);
if (out < 0)
{
mutt_perror("open");
return 0;
}
}
mutt_endwin();
if (fp)
{
/* recv case */
struct State s = { 0 };
/* perform charset conversion on text attachments when piping */
s.flags = MUTT_CHARCONV;
if (outfile && *outfile)
pid = filter_create_fd(path, &s.fp_out, NULL, NULL, -1, out, -1);
else
pid = filter_create(path, &s.fp_out, NULL, NULL);
if (pid < 0)
{
mutt_perror(_("Can't create filter"));
goto bail;
}
s.fp_in = fp;
mutt_decode_attachment(b, &s);
mutt_file_fclose(&s.fp_out);
}
else
{
/* send case */
FILE *fp_in = fopen(b->filename, "r");
if (!fp_in)
{
mutt_perror("fopen");
if (outfile && *outfile)
{
close(out);
unlink(outfile);
}
return 0;
}
FILE *fp_out = NULL;
if (outfile && *outfile)
pid = filter_create_fd(path, &fp_out, NULL, NULL, -1, out, -1);
else
pid = filter_create(path, &fp_out, NULL, NULL);
if (pid < 0)
{
mutt_perror(_("Can't create filter"));
mutt_file_fclose(&fp_in);
goto bail;
}
mutt_file_copy_stream(fp_in, fp_out);
mutt_file_fclose(&fp_out);
mutt_file_fclose(&fp_in);
}
rc = 1;
bail:
if (outfile && *outfile)
close(out);
/* check for error exit from child process */
if (filter_wait(pid) != 0)
rc = 0;
if ((rc == 0) || C_WaitKey)
mutt_any_key_to_continue(NULL);
return rc;
}
/**
* save_attachment_open - Open a file to write an attachment to
* @param path Path to file to open
* @param opt Save option, see #SaveAttach
* @retval ptr File handle to attachment file
*/
static FILE *save_attachment_open(const char *path, enum SaveAttach opt)
{
if (opt == MUTT_SAVE_APPEND)
return fopen(path, "a");
if (opt == MUTT_SAVE_OVERWRITE)
return fopen(path, "w");
return mutt_file_fopen(path, "w");
}
/**
* mutt_save_attachment - Save an attachment
* @param fp Source file stream. Can be NULL
* @param m Email Body
* @param path Where to save the attachment
* @param opt Save option, see #SaveAttach
* @param e Current Email. Can be NULL
* @retval 0 Success
* @retval -1 Error
*/
int mutt_save_attachment(FILE *fp, struct Body *m, const char *path,
enum SaveAttach opt, struct Email *e)
{
if (!m)
return -1;
if (fp)
{
/* recv mode */
if (e && m->email && (m->encoding != ENC_BASE64) &&
(m->encoding != ENC_QUOTED_PRINTABLE) && mutt_is_message_type(m->type, m->subtype))
{
/* message type attachments are written to mail folders. */
char buf[8192];
struct Message *msg = NULL;
CopyHeaderFlags chflags = CH_NO_FLAGS;
int rc = -1;
struct Email *e_new = m->email;
e_new->msgno = e->msgno; /* required for MH/maildir */
e_new->read = true;
if (fseeko(fp, m->offset, SEEK_SET) < 0)
return -1;
if (!fgets(buf, sizeof(buf), fp))
return -1;
struct Mailbox *m_att = mx_path_resolve(path);
struct Context *ctx = mx_mbox_open(m_att, MUTT_APPEND | MUTT_QUIET);
if (!ctx)
{
mailbox_free(&m_att);
return -1;
}
msg = mx_msg_open_new(ctx->mailbox, e_new,
is_from(buf, NULL, 0, NULL) ? MUTT_MSG_NO_FLAGS : MUTT_ADD_FROM);
if (!msg)
{
mx_mbox_close(&ctx);
return -1;
}
if ((ctx->mailbox->magic == MUTT_MBOX) || (ctx->mailbox->magic == MUTT_MMDF))
chflags = CH_FROM | CH_UPDATE_LEN;
chflags |= ((ctx->mailbox->magic == MUTT_MAILDIR) ? CH_NOSTATUS : CH_UPDATE);
if ((mutt_copy_message_fp(msg->fp, fp, e_new, MUTT_CM_NO_FLAGS, chflags, 0) == 0) &&
(mx_msg_commit(ctx->mailbox, msg) == 0))
{
rc = 0;
}
else
{
rc = -1;
}
mx_msg_close(ctx->mailbox, &msg);
mx_mbox_close(&ctx);
return rc;
}
else
{
/* In recv mode, extract from folder and decode */
struct State s = { 0 };
s.fp_out = save_attachment_open(path, opt);
if (!s.fp_out)
{
mutt_perror("fopen");
return -1;
}
fseeko((s.fp_in = fp), m->offset, SEEK_SET);
mutt_decode_attachment(m, &s);
if (mutt_file_fsync_close(&s.fp_out) != 0)
{
mutt_perror("fclose");
return -1;
}
}
}
else
{
if (!m->filename)
return -1;
/* In send mode, just copy file */
FILE *fp_old = fopen(m->filename, "r");
if (!fp_old)
{
mutt_perror("fopen");
return -1;
}
FILE *fp_new = save_attachment_open(path, opt);
if (!fp_new)
{
mutt_perror("fopen");
mutt_file_fclose(&fp_old);
return -1;
}
if (mutt_file_copy_stream(fp_old, fp_new) == -1)
{
mutt_error(_("Write fault"));
mutt_file_fclose(&fp_old);
mutt_file_fclose(&fp_new);
return -1;
}
mutt_file_fclose(&fp_old);
if (mutt_file_fsync_close(&fp_new) != 0)
{
mutt_error(_("Write fault"));
return -1;
}
}
return 0;
}
/**
* mutt_decode_save_attachment - Decode, then save an attachment
* @param fp File to read from (OPTIONAL)
* @param m Attachment
* @param path Path to save the Attachment to
* @param displaying Flags, e.g. #MUTT_DISPLAY
* @param opt Save option, see #SaveAttach
* @retval 0 Success
* @retval -1 Error
*/
int mutt_decode_save_attachment(FILE *fp, struct Body *m, const char *path,
int displaying, enum SaveAttach opt)
{
struct State s = { 0 };
unsigned int saved_encoding = 0;
struct Body *saved_parts = NULL;
struct Email *e_saved = NULL;
int rc = 0;
s.flags = displaying;
if (opt == MUTT_SAVE_APPEND)
s.fp_out = fopen(path, "a");
else if (opt == MUTT_SAVE_OVERWRITE)
s.fp_out = fopen(path, "w");
else
s.fp_out = mutt_file_fopen(path, "w");
if (!s.fp_out)
{
mutt_perror("fopen");
return -1;
}
if (!fp)
{
/* When called from the compose menu, the attachment isn't parsed,
* so we need to do it here. */
struct stat st;
if (stat(m->filename, &st) == -1)
{
mutt_perror("stat");
mutt_file_fclose(&s.fp_out);
return -1;
}
s.fp_in = fopen(m->filename, "r");
if (!s.fp_in)
{