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copy.c
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copy.c
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/**
* @file
* Duplicate the structure of an entire email
*
* @authors
* Copyright (C) 1996-2000,2002,2014 Michael R. Elkins <me@mutt.org>
* Copyright (C) 2017-2024 Richard Russon <rich@flatcap.org>
* Copyright (C) 2017-2023 Pietro Cerutti <gahr@gahr.ch>
* Copyright (C) 2024 Dennis Schön <mail@dennis-schoen.de>
*
* @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 neo_copy Duplicate the structure of an entire email
*
* Duplicate the structure of an entire email
*/
#include "config.h"
#include <ctype.h>
#include <inttypes.h> // IWYU pragma: keep
#include <locale.h>
#include <stdbool.h>
#include <string.h>
#include "mutt/lib.h"
#include "address/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "mutt.h"
#include "copy.h"
#include "expando/lib.h"
#include "index/lib.h"
#include "ncrypt/lib.h"
#include "pager/lib.h"
#include "send/lib.h"
#include "globals.h"
#include "handler.h"
#include "hdrline.h"
#include "mx.h"
#ifdef USE_NOTMUCH
#include "notmuch/lib.h"
#include "muttlib.h"
#endif
#ifdef ENABLE_NLS
#include <libintl.h>
#endif
static int address_header_decode(char **h);
static int copy_delete_attach(struct Body *b, FILE *fp_in, FILE *fp_out,
const char *quoted_date);
ARRAY_HEAD(HeaderArray, char *);
/**
* add_one_header - Add a header to a Headers array
* @param headers Headers array
* @param pos Position to insert new header
* @param value Text to insert
*
* If a header already exists in that position, the new text will be
* concatenated on the old.
*/
static void add_one_header(struct HeaderArray *headers, size_t pos, char *value)
{
char **old = ARRAY_GET(headers, pos);
if (old && *old)
{
char *new_value = NULL;
mutt_str_asprintf(&new_value, "%s%s", *old, value);
FREE(old);
FREE(&value);
value = new_value;
}
ARRAY_SET(headers, pos, value);
}
/**
* mutt_copy_hdr - Copy header from one file to another
* @param fp_in FILE pointer to read from
* @param fp_out FILE pointer to write to
* @param off_start Offset to start from
* @param off_end Offset to finish at
* @param chflags Flags, see #CopyHeaderFlags
* @param prefix Prefix for quoting headers
* @param wraplen Width to wrap at (when chflags & CH_DISPLAY)
* @retval 0 Success
* @retval -1 Failure
*
* Ok, the only reason for not merging this with mutt_copy_header() below is to
* avoid creating a Email structure in message_handler(). Also, this one will
* wrap headers much more aggressively than the other one.
*/
int mutt_copy_hdr(FILE *fp_in, FILE *fp_out, LOFF_T off_start, LOFF_T off_end,
CopyHeaderFlags chflags, const char *prefix, int wraplen)
{
bool from = false;
bool this_is_from = false;
bool ignore = false;
char buf[1024] = { 0 }; /* should be long enough to get most fields in one pass */
char *nl = NULL;
struct HeaderArray headers = ARRAY_HEAD_INITIALIZER;
int hdr_count;
int x;
char *this_one = NULL;
size_t this_one_len = 0;
if (off_start < 0)
return -1;
if (ftello(fp_in) != off_start)
if (!mutt_file_seek(fp_in, off_start, SEEK_SET))
return -1;
buf[0] = '\n';
buf[1] = '\0';
if ((chflags & (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX | CH_WEED_DELIVERED)) == 0)
{
/* Without these flags to complicate things
* we can do a more efficient line to line copying */
while (ftello(fp_in) < off_end)
{
nl = strchr(buf, '\n');
if (!fgets(buf, sizeof(buf), fp_in))
break;
/* Is it the beginning of a header? */
if (nl && (buf[0] != ' ') && (buf[0] != '\t'))
{
ignore = true;
if (!from && mutt_str_startswith(buf, "From "))
{
if ((chflags & CH_FROM) == 0)
continue;
from = true;
}
else if ((chflags & CH_NOQFROM) && mutt_istr_startswith(buf, ">From "))
{
continue;
}
else if ((buf[0] == '\n') || ((buf[0] == '\r') && (buf[1] == '\n')))
{
break; /* end of header */
}
if ((chflags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
(mutt_istr_startswith(buf, "Status:") || mutt_istr_startswith(buf, "X-Status:")))
{
continue;
}
if ((chflags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
(mutt_istr_startswith(buf, "Content-Length:") ||
mutt_istr_startswith(buf, "Lines:")))
{
continue;
}
if ((chflags & CH_UPDATE_REFS) && mutt_istr_startswith(buf, "References:"))
{
continue;
}
if ((chflags & CH_UPDATE_IRT) && mutt_istr_startswith(buf, "In-Reply-To:"))
{
continue;
}
if (chflags & CH_UPDATE_LABEL && mutt_istr_startswith(buf, "X-Label:"))
continue;
if ((chflags & CH_UPDATE_SUBJECT) && mutt_istr_startswith(buf, "Subject:"))
{
continue;
}
ignore = false;
}
if (!ignore && (fputs(buf, fp_out) == EOF))
return -1;
}
return 0;
}
hdr_count = 1;
x = 0;
/* We are going to read and collect the headers in an array
* so we are able to do re-ordering.
* First count the number of entries in the array */
if (chflags & CH_REORDER)
{
struct ListNode *np = NULL;
STAILQ_FOREACH(np, &HeaderOrderList, entries)
{
mutt_debug(LL_DEBUG3, "Reorder list: %s\n", np->data);
hdr_count++;
}
}
mutt_debug(LL_DEBUG1, "WEED is %sset\n", (chflags & CH_WEED) ? "" : "not ");
ARRAY_RESERVE(&headers, hdr_count);
/* Read all the headers into the array */
while (ftello(fp_in) < off_end)
{
nl = strchr(buf, '\n');
/* Read a line */
if (!fgets(buf, sizeof(buf), fp_in))
break;
/* Is it the beginning of a header? */
if (nl && (buf[0] != ' ') && (buf[0] != '\t'))
{
/* Do we have anything pending? */
if (this_one)
{
if (chflags & CH_DECODE)
{
if (address_header_decode(&this_one) == 0)
rfc2047_decode(&this_one);
this_one_len = mutt_str_len(this_one);
/* Convert CRLF line endings to LF */
if ((this_one_len > 2) && (this_one[this_one_len - 2] == '\r') &&
(this_one[this_one_len - 1] == '\n'))
{
this_one[this_one_len - 2] = '\n';
this_one[this_one_len - 1] = '\0';
}
}
add_one_header(&headers, x, this_one);
this_one = NULL;
}
ignore = true;
this_is_from = false;
if (!from && mutt_str_startswith(buf, "From "))
{
if ((chflags & CH_FROM) == 0)
continue;
this_is_from = true;
from = true;
}
else if ((buf[0] == '\n') || ((buf[0] == '\r') && (buf[1] == '\n')))
{
break; /* end of header */
}
/* note: CH_FROM takes precedence over header weeding. */
if (!((chflags & CH_FROM) && (chflags & CH_FORCE_FROM) && this_is_from) &&
(chflags & CH_WEED) && mutt_matches_ignore(buf))
{
continue;
}
if ((chflags & CH_WEED_DELIVERED) && mutt_istr_startswith(buf, "Delivered-To:"))
{
continue;
}
if ((chflags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
(mutt_istr_startswith(buf, "Status:") || mutt_istr_startswith(buf, "X-Status:")))
{
continue;
}
if ((chflags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
(mutt_istr_startswith(buf, "Content-Length:") || mutt_istr_startswith(buf, "Lines:")))
{
continue;
}
if ((chflags & CH_MIME))
{
if (mutt_istr_startswith(buf, "mime-version:"))
{
continue;
}
size_t plen = mutt_istr_startswith(buf, "content-");
if ((plen != 0) && (mutt_istr_startswith(buf + plen, "transfer-encoding:") ||
mutt_istr_startswith(buf + plen, "type:")))
{
continue;
}
}
if ((chflags & CH_UPDATE_REFS) && mutt_istr_startswith(buf, "References:"))
{
continue;
}
if ((chflags & CH_UPDATE_IRT) && mutt_istr_startswith(buf, "In-Reply-To:"))
{
continue;
}
if ((chflags & CH_UPDATE_LABEL) && mutt_istr_startswith(buf, "X-Label:"))
continue;
if ((chflags & CH_UPDATE_SUBJECT) && mutt_istr_startswith(buf, "Subject:"))
{
continue;
}
/* Find x -- the array entry where this header is to be saved */
if (chflags & CH_REORDER)
{
struct ListNode *np = NULL;
x = 0;
int match = -1;
size_t match_len = 0;
STAILQ_FOREACH(np, &HeaderOrderList, entries)
{
size_t hdr_order_len = mutt_str_len(np->data);
if (mutt_istrn_equal(buf, np->data, hdr_order_len))
{
if ((match == -1) || (hdr_order_len > match_len))
{
match = x;
match_len = hdr_order_len;
}
mutt_debug(LL_DEBUG2, "Reorder: %s matches %s", np->data, buf);
}
x++;
}
if (match != -1)
x = match;
}
ignore = false;
} /* If beginning of header */
if (!ignore)
{
mutt_debug(LL_DEBUG2, "Reorder: x = %d; hdr_count = %d\n", x, hdr_count);
if (this_one)
{
size_t blen = mutt_str_len(buf);
mutt_mem_realloc(&this_one, this_one_len + blen + 1);
mutt_strn_copy(this_one + this_one_len, buf, blen, blen + 1);
this_one_len += blen;
}
else
{
this_one = mutt_str_dup(buf);
this_one_len = mutt_str_len(this_one);
}
}
} /* while (ftello (fp_in) < off_end) */
/* Do we have anything pending? -- XXX, same code as in above in the loop. */
if (this_one)
{
if (chflags & CH_DECODE)
{
if (address_header_decode(&this_one) == 0)
rfc2047_decode(&this_one);
this_one_len = mutt_str_len(this_one);
}
add_one_header(&headers, x, this_one);
this_one = NULL;
}
/* Now output the headers in order */
bool error = false;
char **hp = NULL;
const short c_wrap = cs_subset_number(NeoMutt->sub, "wrap");
ARRAY_FOREACH(hp, &headers)
{
if (!error && hp && *hp)
{
/* We couldn't do the prefixing when reading because RFC2047
* decoding may have concatenated lines. */
if (chflags & (CH_DECODE | CH_PREFIX))
{
const char *pre = (chflags & CH_PREFIX) ? prefix : NULL;
wraplen = mutt_window_wrap_cols(wraplen, c_wrap);
if (mutt_write_one_header(fp_out, 0, *hp, pre, wraplen, chflags, NeoMutt->sub) == -1)
{
error = true;
}
}
else
{
if (fputs(*hp, fp_out) == EOF)
{
error = true;
}
}
}
FREE(hp);
}
ARRAY_FREE(&headers);
if (error)
return -1;
return 0;
}
/**
* mutt_copy_header - Copy Email header
* @param fp_in FILE pointer to read from
* @param e Email
* @param fp_out FILE pointer to write to
* @param chflags See #CopyHeaderFlags
* @param prefix Prefix for quoting headers (if #CH_PREFIX is set)
* @param wraplen Width to wrap at (when chflags & CH_DISPLAY)
* @retval 0 Success
* @retval -1 Failure
*/
int mutt_copy_header(FILE *fp_in, struct Email *e, FILE *fp_out,
CopyHeaderFlags chflags, const char *prefix, int wraplen)
{
char *temp_hdr = NULL;
if (e->env)
{
chflags |= ((e->env->changed & MUTT_ENV_CHANGED_IRT) ? CH_UPDATE_IRT : 0) |
((e->env->changed & MUTT_ENV_CHANGED_REFS) ? CH_UPDATE_REFS : 0) |
((e->env->changed & MUTT_ENV_CHANGED_XLABEL) ? CH_UPDATE_LABEL : 0) |
((e->env->changed & MUTT_ENV_CHANGED_SUBJECT) ? CH_UPDATE_SUBJECT : 0);
}
if (mutt_copy_hdr(fp_in, fp_out, e->offset, e->body->offset, chflags, prefix, wraplen) == -1)
return -1;
if (chflags & CH_TXTPLAIN)
{
char chsbuf[128] = { 0 };
char buf[128] = { 0 };
fputs("MIME-Version: 1.0\n", fp_out);
fputs("Content-Transfer-Encoding: 8bit\n", fp_out);
fputs("Content-Type: text/plain; charset=", fp_out);
const char *const c_charset = cc_charset();
mutt_ch_canonical_charset(chsbuf, sizeof(chsbuf), c_charset ? c_charset : "us-ascii");
mutt_addr_cat(buf, sizeof(buf), chsbuf, MimeSpecials);
fputs(buf, fp_out);
fputc('\n', fp_out);
}
if ((chflags & CH_UPDATE_IRT) && !STAILQ_EMPTY(&e->env->in_reply_to))
{
fputs("In-Reply-To:", fp_out);
struct ListNode *np = NULL;
STAILQ_FOREACH(np, &e->env->in_reply_to, entries)
{
fputc(' ', fp_out);
fputs(np->data, fp_out);
}
fputc('\n', fp_out);
}
if ((chflags & CH_UPDATE_REFS) && !STAILQ_EMPTY(&e->env->references))
{
fputs("References:", fp_out);
mutt_write_references(&e->env->references, fp_out, 0);
fputc('\n', fp_out);
}
if ((chflags & CH_UPDATE) && ((chflags & CH_NOSTATUS) == 0))
{
if (e->old || e->read)
{
fputs("Status: ", fp_out);
if (e->read)
fputs("RO", fp_out);
else if (e->old)
fputc('O', fp_out);
fputc('\n', fp_out);
}
if (e->flagged || e->replied)
{
fputs("X-Status: ", fp_out);
if (e->replied)
fputc('A', fp_out);
if (e->flagged)
fputc('F', fp_out);
fputc('\n', fp_out);
}
}
if (chflags & CH_UPDATE_LEN && ((chflags & CH_NOLEN) == 0))
{
fprintf(fp_out, "Content-Length: " OFF_T_FMT "\n", e->body->length);
if ((e->lines != 0) || (e->body->length == 0))
fprintf(fp_out, "Lines: %d\n", e->lines);
}
const bool c_weed = cs_subset_bool(NeoMutt->sub, "weed");
#ifdef USE_NOTMUCH
if (chflags & CH_VIRTUAL)
{
/* Add some fake headers based on notmuch data */
char *folder = nm_email_get_folder(e);
if (folder && !(c_weed && mutt_matches_ignore("folder")))
{
char buf[1024] = { 0 };
mutt_str_copy(buf, folder, sizeof(buf));
mutt_pretty_mailbox(buf, sizeof(buf));
fputs("Folder: ", fp_out);
fputs(buf, fp_out);
fputc('\n', fp_out);
}
}
#endif
struct Buffer *tags = buf_pool_get();
driver_tags_get(&e->tags, tags);
if (!buf_is_empty(tags) && !(c_weed && mutt_matches_ignore("tags")))
{
fputs("Tags: ", fp_out);
fputs(buf_string(tags), fp_out);
fputc('\n', fp_out);
}
buf_pool_release(&tags);
const struct Slist *const c_send_charset = cs_subset_slist(NeoMutt->sub, "send_charset");
const short c_wrap = cs_subset_number(NeoMutt->sub, "wrap");
if ((chflags & CH_UPDATE_LABEL) && e->env->x_label)
{
temp_hdr = e->env->x_label;
/* env->x_label isn't currently stored with direct references elsewhere.
* Mailbox->label_hash strdups the keys. But to be safe, encode a copy */
if (!(chflags & CH_DECODE))
{
temp_hdr = mutt_str_dup(temp_hdr);
rfc2047_encode(&temp_hdr, NULL, sizeof("X-Label:"), c_send_charset);
}
if (mutt_write_one_header(fp_out, "X-Label", temp_hdr, (chflags & CH_PREFIX) ? prefix : 0,
mutt_window_wrap_cols(wraplen, c_wrap), chflags,
NeoMutt->sub) == -1)
{
return -1;
}
if (!(chflags & CH_DECODE))
FREE(&temp_hdr);
}
if ((chflags & CH_UPDATE_SUBJECT) && e->env->subject)
{
temp_hdr = e->env->subject;
/* env->subject is directly referenced in Mailbox->subj_hash, so we
* have to be careful not to encode (and thus free) that memory. */
if (!(chflags & CH_DECODE))
{
temp_hdr = mutt_str_dup(temp_hdr);
rfc2047_encode(&temp_hdr, NULL, sizeof("Subject:"), c_send_charset);
}
if (mutt_write_one_header(fp_out, "Subject", temp_hdr, (chflags & CH_PREFIX) ? prefix : 0,
mutt_window_wrap_cols(wraplen, c_wrap), chflags,
NeoMutt->sub) == -1)
{
return -1;
}
if (!(chflags & CH_DECODE))
FREE(&temp_hdr);
}
if ((chflags & CH_NONEWLINE) == 0)
{
if (chflags & CH_PREFIX)
fputs(prefix, fp_out);
fputc('\n', fp_out); /* add header terminator */
}
if (ferror(fp_out) || feof(fp_out))
return -1;
return 0;
}
/**
* count_delete_lines - Count lines to be deleted in this email body
* @param fp FILE pointer to read from
* @param b Email Body
* @param length Number of bytes to be deleted
* @param datelen Length of the date
* @retval num Number of lines to be deleted
* @retval -1 on error
*
* Count the number of lines and bytes to be deleted in this body
*/
static int count_delete_lines(FILE *fp, struct Body *b, LOFF_T *length, size_t datelen)
{
int dellines = 0;
if (b->deleted)
{
if (!mutt_file_seek(fp, b->offset, SEEK_SET))
{
return -1;
}
for (long l = b->length; l; l--)
{
const int ch = getc(fp);
if (ch == EOF)
break;
if (ch == '\n')
dellines++;
}
/* 3 and 89 come from the added header of three lines in
* copy_delete_attach(). 89 is the size of the header(including
* the newlines, tabs, and a single digit length), not including
* the date length. */
dellines -= 3;
*length -= b->length - (89 + datelen);
/* Count the number of digits exceeding the first one to write the size */
for (long l = 10; b->length >= l; l *= 10)
(*length)++;
}
else
{
for (b = b->parts; b; b = b->next)
{
const int del = count_delete_lines(fp, b, length, datelen);
if (del == -1)
{
return -1;
}
dellines += del;
}
}
return dellines;
}
/**
* mutt_copy_message_fp - Make a copy of a message from a FILE pointer
* @param fp_out Where to write output
* @param fp_in Where to get input
* @param e Email being copied
* @param cmflags Flags, see #CopyMessageFlags
* @param chflags Flags, see #CopyHeaderFlags
* @param wraplen Width to wrap at (when chflags & CH_DISPLAY)
* @retval 0 Success
* @retval -1 Failure
*/
int mutt_copy_message_fp(FILE *fp_out, FILE *fp_in, struct Email *e,
CopyMessageFlags cmflags, CopyHeaderFlags chflags, int wraplen)
{
struct Body *body = e->body;
struct Buffer *prefix = buf_pool_get();
LOFF_T new_offset = -1;
int rc = 0;
if (cmflags & MUTT_CM_PREFIX)
{
const bool c_text_flowed = cs_subset_bool(NeoMutt->sub, "text_flowed");
if (c_text_flowed)
{
buf_strcpy(prefix, ">");
}
else
{
const char *const c_attribution_locale = cs_subset_string(NeoMutt->sub, "attribution_locale");
const struct Expando *c_indent_string = cs_subset_expando(NeoMutt->sub, "indent_string");
struct Mailbox *m_cur = get_current_mailbox();
setlocale(LC_TIME, NONULL(c_attribution_locale));
mutt_make_string(prefix, -1, c_indent_string, m_cur, -1, e, MUTT_FORMAT_NO_FLAGS, NULL);
setlocale(LC_TIME, "");
}
}
if ((cmflags & MUTT_CM_NOHEADER) == 0)
{
if (cmflags & MUTT_CM_PREFIX)
{
chflags |= CH_PREFIX;
}
else if (e->attach_del && (chflags & CH_UPDATE_LEN))
{
int new_lines;
int rc_attach_del = -1;
LOFF_T new_length = body->length;
struct Buffer *quoted_date = NULL;
quoted_date = buf_pool_get();
buf_addch(quoted_date, '"');
mutt_date_make_date(quoted_date, cs_subset_bool(NeoMutt->sub, "local_date_header"));
buf_addch(quoted_date, '"');
/* Count the number of lines and bytes to be deleted */
if (!mutt_file_seek(fp_in, body->offset, SEEK_SET))
{
goto attach_del_cleanup;
}
const int del = count_delete_lines(fp_in, body, &new_length, buf_len(quoted_date));
if (del == -1)
{
goto attach_del_cleanup;
}
new_lines = e->lines - del;
/* Copy the headers */
if (mutt_copy_header(fp_in, e, fp_out, chflags | CH_NOLEN | CH_NONEWLINE, NULL, wraplen))
goto attach_del_cleanup;
fprintf(fp_out, "Content-Length: " OFF_T_FMT "\n", new_length);
if (new_lines <= 0)
new_lines = 0;
else
fprintf(fp_out, "Lines: %d\n", new_lines);
putc('\n', fp_out);
if (ferror(fp_out) || feof(fp_out))
goto attach_del_cleanup;
new_offset = ftello(fp_out);
/* Copy the body */
if (!mutt_file_seek(fp_in, body->offset, SEEK_SET))
goto attach_del_cleanup;
if (copy_delete_attach(body, fp_in, fp_out, buf_string(quoted_date)))
goto attach_del_cleanup;
buf_pool_release("ed_date);
LOFF_T fail = ((ftello(fp_out) - new_offset) - new_length);
if (fail)
{
mutt_error(ngettext("The length calculation was wrong by %ld byte",
"The length calculation was wrong by %ld bytes", fail),
(long) fail);
new_length += fail;
}
/* Update original message if we are sync'ing a mailfolder */
if (cmflags & MUTT_CM_UPDATE)
{
e->attach_del = false;
e->lines = new_lines;
body->offset = new_offset;
body->length = new_length;
mutt_body_free(&body->parts);
}
rc_attach_del = 0;
attach_del_cleanup:
buf_pool_release("ed_date);
rc = rc_attach_del;
goto done;
}
if (mutt_copy_header(fp_in, e, fp_out, chflags,
(chflags & CH_PREFIX) ? buf_string(prefix) : NULL, wraplen) == -1)
{
rc = -1;
goto done;
}
new_offset = ftello(fp_out);
}
if (cmflags & MUTT_CM_DECODE)
{
/* now make a text/plain version of the message */
struct State state = { 0 };
state.fp_in = fp_in;
state.fp_out = fp_out;
if (cmflags & MUTT_CM_PREFIX)
state.prefix = buf_string(prefix);
if (cmflags & MUTT_CM_DISPLAY)
{
state.flags |= STATE_DISPLAY;
state.wraplen = wraplen;
const char *const c_pager = pager_get_pager(NeoMutt->sub);
if (!c_pager)
state.flags |= STATE_PAGER;
}
if (cmflags & MUTT_CM_PRINTING)
state.flags |= STATE_PRINTING;
if (cmflags & MUTT_CM_WEED)
state.flags |= STATE_WEED;
if (cmflags & MUTT_CM_CHARCONV)
state.flags |= STATE_CHARCONV;
if (cmflags & MUTT_CM_REPLYING)
state.flags |= STATE_REPLYING;
if ((WithCrypto != 0) && cmflags & MUTT_CM_VERIFY)
state.flags |= STATE_VERIFY;
rc = mutt_body_handler(body, &state);
}
else if ((WithCrypto != 0) && (cmflags & MUTT_CM_DECODE_CRYPT) && (e->security & SEC_ENCRYPT))
{
struct Body *cur = NULL;
FILE *fp = NULL;
if (((WithCrypto & APPLICATION_PGP) != 0) && (cmflags & MUTT_CM_DECODE_PGP) &&
(e->security & APPLICATION_PGP) && (e->body->type == TYPE_MULTIPART))
{
if (crypt_pgp_decrypt_mime(fp_in, &fp, e->body, &cur))
{
rc = 1;
goto done;
}
fputs("MIME-Version: 1.0\n", fp_out);
}
if (((WithCrypto & APPLICATION_SMIME) != 0) && (cmflags & MUTT_CM_DECODE_SMIME) &&
(e->security & APPLICATION_SMIME) && (e->body->type == TYPE_APPLICATION))
{
if (crypt_smime_decrypt_mime(fp_in, &fp, e->body, &cur))
{
rc = 1;
goto done;
}
}
if (!cur)
{
mutt_error(_("No decryption engine available for message"));
rc = 1;
goto done;
}
mutt_write_mime_header(cur, fp_out, NeoMutt->sub);
fputc('\n', fp_out);
if (!mutt_file_seek(fp, cur->offset, SEEK_SET))
{
rc = 1;
goto done;
}
if (mutt_file_copy_bytes(fp, fp_out, cur->length) == -1)
{
mutt_file_fclose(&fp);
mutt_body_free(&cur);
rc = 1;
goto done;
}
mutt_body_free(&cur);
mutt_file_fclose(&fp);
}
else
{
if (!mutt_file_seek(fp_in, body->offset, SEEK_SET))
{
rc = 1;
goto done;
}
if (cmflags & MUTT_CM_PREFIX)
{
int c;
size_t bytes = body->length;
fputs(buf_string(prefix), fp_out);
while (((c = fgetc(fp_in)) != EOF) && bytes--)
{
fputc(c, fp_out);
if (c == '\n')
{
fputs(buf_string(prefix), fp_out);
}
}
}
else if (mutt_file_copy_bytes(fp_in, fp_out, body->length) == -1)
{
rc = 1;
goto done;
}
}
if ((cmflags & MUTT_CM_UPDATE) && ((cmflags & MUTT_CM_NOHEADER) == 0) &&
(new_offset != -1))
{
body->offset = new_offset;
mutt_body_free(&body->parts);
}
done:
buf_pool_release(&prefix);
return rc;
}
/**
* mutt_copy_message - Copy a message from a Mailbox
* @param fp_out FILE pointer to write to
* @param e Email
* @param msg Message
* @param cmflags Flags, see #CopyMessageFlags
* @param chflags Flags, see #CopyHeaderFlags
* @param wraplen Width to wrap at (when chflags & CH_DISPLAY)
* @retval 0 Success
* @retval -1 Failure
*
* should be made to return -1 on fatal errors, and 1 on non-fatal errors
* like partial decode, where it is worth displaying as much as possible
*/
int mutt_copy_message(FILE *fp_out, struct Email *e, struct Message *msg,
CopyMessageFlags cmflags, CopyHeaderFlags chflags, int wraplen)
{
if (!msg || !e->body)
{
return -1;
}
if (fp_out == msg->fp)
{
mutt_debug(LL_DEBUG1, "trying to read/write from/to the same FILE*!\n");
return -1;
}
int rc = mutt_copy_message_fp(fp_out, msg->fp, e, cmflags, chflags, wraplen);
if ((rc == 0) && (ferror(fp_out) || feof(fp_out)))
{
mutt_debug(LL_DEBUG1, "failed to detect EOF!\n");
rc = -1;
}
return rc;
}
/**
* append_message - Appends a copy of the given message to a mailbox
* @param dest destination mailbox
* @param fp_in where to get input
* @param src source mailbox
* @param e Email being copied
* @param cmflags Flags, see #CopyMessageFlags
* @param chflags Flags, see #CopyHeaderFlags
* @retval 0 Success
* @retval -1 Error
*/
static int append_message(struct Mailbox *dest, FILE *fp_in, struct Mailbox *src,
struct Email *e, CopyMessageFlags cmflags, CopyHeaderFlags chflags)
{
char buf[256] = { 0 };
struct Message *msg = NULL;
int rc;
if (!mutt_file_seek(fp_in, e->offset, SEEK_SET))
return -1;
if (!fgets(buf, sizeof(buf), fp_in))
return -1;
msg = mx_msg_open_new(dest, e, is_from(buf, NULL, 0, NULL) ? MUTT_MSG_NO_FLAGS : MUTT_ADD_FROM);
if (!msg)
return -1;
if ((dest->type == MUTT_MBOX) || (dest->type == MUTT_MMDF))
chflags |= CH_FROM | CH_FORCE_FROM;
chflags |= ((dest->type == MUTT_MAILDIR) ? CH_NOSTATUS : CH_UPDATE);
rc = mutt_copy_message_fp(msg->fp, fp_in, e, cmflags, chflags, 0);
if (mx_msg_commit(dest, msg) != 0)
rc = -1;
#ifdef USE_NOTMUCH
if (msg->committed_path && (dest->type == MUTT_MAILDIR) && (src->type == MUTT_NOTMUCH))
nm_update_filename(src, NULL, msg->committed_path, e);
#endif
mx_msg_close(dest, &msg);
return rc;
}
/**
* mutt_append_message - Append a message
* @param m_dst Destination Mailbox
* @param m_src Source Mailbox
* @param e Email
* @param msg Message
* @param cmflags Flags, see #CopyMessageFlags
* @param chflags Flags, see #CopyHeaderFlags
* @retval 0 Success
* @retval -1 Failure
*/
int mutt_append_message(struct Mailbox *m_dst, struct Mailbox *m_src,
struct Email *e, struct Message *msg,
CopyMessageFlags cmflags, CopyHeaderFlags chflags)
{
if (!e)
return -1;
const bool own_msg = !msg;
if (own_msg && !(msg = mx_msg_open(m_src, e)))
{
return -1;
}
int rc = append_message(m_dst, msg->fp, m_src, e, cmflags, chflags);
if (own_msg)
{
mx_msg_close(m_src, &msg);
}
return rc;