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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 <[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/>.
*/
#include "config.h"
#include <ctype.h>
#include <inttypes.h>
#include <stdbool.h>
#include <string.h>
#include "mutt.h"
#include "copy.h"
#include "address.h"
#include "body.h"
#include "context.h"
#include "envelope.h"
#include "globals.h"
#include "header.h"
#include "lib/lib.h"
#include "list.h"
#include "mailbox.h"
#include "mime.h"
#include "mutt_curses.h"
#include "mutt_idna.h"
#include "mx.h"
#include "ncrypt/ncrypt.h"
#include "options.h"
#include "protos.h"
#include "rfc2047.h"
#include "rfc822.h"
#include "state.h"
#ifdef USE_NOTMUCH
#include "mutt_notmuch.h"
#endif
static int address_header_decode(char **str);
static int copy_delete_attach(struct Body *b, FILE *fpin, FILE *fpout, char *date);
/**
* mutt_copy_hdr - Copy header from one file to another
*
* Ok, the only reason for not merging this with mutt_copy_header() below is to
* avoid creating a Header structure in message_handler(). Also, this one will
* wrap headers much more aggressively than the other one.
*/
int mutt_copy_hdr(FILE *in, FILE *out, LOFF_T off_start, LOFF_T off_end,
int flags, const char *prefix)
{
bool from = false;
bool this_is_from = false;
bool ignore = false;
char buf[LONG_STRING]; /* should be long enough to get most fields in one pass */
char *nl = NULL;
char **headers = NULL;
int hdr_count;
int x;
char *this_one = NULL;
size_t this_one_len = 0;
int error;
if (off_start < 0)
return -1;
if (ftello(in) != off_start)
if (fseeko(in, off_start, SEEK_SET) < 0)
return -1;
buf[0] = '\n';
buf[1] = '\0';
if ((flags & (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(in) < off_end)
{
nl = strchr(buf, '\n');
if ((fgets(buf, sizeof(buf), in)) == NULL)
break;
/* Is it the beginning of a header? */
if (nl && buf[0] != ' ' && buf[0] != '\t')
{
ignore = true;
if (!from && (mutt_strncmp("From ", buf, 5) == 0))
{
if ((flags & CH_FROM) == 0)
continue;
from = true;
}
else if (flags & (CH_NOQFROM) && (mutt_strncasecmp(">From ", buf, 6) == 0))
continue;
else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
break; /* end of header */
if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
((mutt_strncasecmp("Status:", buf, 7) == 0) ||
(mutt_strncasecmp("X-Status:", buf, 9) == 0)))
continue;
if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
((mutt_strncasecmp("Content-Length:", buf, 15) == 0) ||
(mutt_strncasecmp("Lines:", buf, 6) == 0)))
continue;
if ((flags & CH_UPDATE_REFS) && (mutt_strncasecmp("References:", buf, 11) == 0))
continue;
if ((flags & CH_UPDATE_IRT) && (mutt_strncasecmp("In-Reply-To:", buf, 12) == 0))
continue;
if (flags & CH_UPDATE_LABEL && (mutt_strncasecmp("X-Label:", buf, 8) == 0))
continue;
ignore = false;
}
if (flags & CH_UPDATE_LABEL)
{
if ((mutt_strncasecmp("X-Label:", buf, 8) == 0) ||
(mutt_strncasecmp("X-Keywords:", buf, 11) == 0) ||
(mutt_strncasecmp("X-Mozilla-Keys:", buf, 15) == 0) ||
(mutt_strncasecmp("Keywords:", buf, 9) == 0))
continue;
}
if (!ignore && fputs(buf, out) == EOF)
return -1;
}
return 0;
}
hdr_count = 1;
x = 0;
error = false;
/* 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 (flags & CH_REORDER)
{
struct ListNode *np;
STAILQ_FOREACH(np, &HeaderOrderList, entries)
{
mutt_debug(3, "Reorder list: %s\n", np->data);
hdr_count++;
}
}
mutt_debug(1, "WEED is %s\n", (flags & CH_WEED) ? "Set" : "Not");
headers = safe_calloc(hdr_count, sizeof(char *));
/* Read all the headers into the array */
while (ftello(in) < off_end)
{
nl = strchr(buf, '\n');
/* Read a line */
if ((fgets(buf, sizeof(buf), in)) == NULL)
break;
/* Is it the beginning of a header? */
if (nl && buf[0] != ' ' && buf[0] != '\t')
{
/* Do we have anything pending? */
if (this_one)
{
if (flags & CH_DECODE)
{
if (!address_header_decode(&this_one))
rfc2047_decode(&this_one);
this_one_len = mutt_strlen(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';
}
}
if (!headers[x])
headers[x] = this_one;
else
{
int hlen = mutt_strlen(headers[x]);
safe_realloc(&headers[x], hlen + this_one_len + sizeof(char));
strcat(headers[x] + hlen, this_one);
FREE(&this_one);
}
this_one = NULL;
}
ignore = true;
this_is_from = false;
if (!from && (mutt_strncmp("From ", buf, 5) == 0))
{
if ((flags & CH_FROM) == 0)
continue;
this_is_from = 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 (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
(flags & CH_WEED) && mutt_matches_ignore(buf))
continue;
if ((flags & CH_WEED_DELIVERED) && (mutt_strncasecmp("Delivered-To:", buf, 13) == 0))
continue;
if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
((mutt_strncasecmp("Status:", buf, 7) == 0) ||
(mutt_strncasecmp("X-Status:", buf, 9) == 0)))
continue;
if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
((mutt_strncasecmp("Content-Length:", buf, 15) == 0) ||
(mutt_strncasecmp("Lines:", buf, 6) == 0)))
continue;
if ((flags & CH_MIME) &&
(((mutt_strncasecmp("content-", buf, 8) == 0) &&
((mutt_strncasecmp("transfer-encoding:", buf + 8, 18) == 0) ||
(mutt_strncasecmp("type:", buf + 8, 5) == 0))) ||
(mutt_strncasecmp("mime-version:", buf, 13) == 0)))
continue;
if ((flags & CH_UPDATE_REFS) && (mutt_strncasecmp("References:", buf, 11) == 0))
continue;
if ((flags & CH_UPDATE_IRT) && (mutt_strncasecmp("In-Reply-To:", buf, 12) == 0))
continue;
/* Find x -- the array entry where this header is to be saved */
if (flags & CH_REORDER)
{
struct ListNode *np;
x = 0;
STAILQ_FOREACH(np, &HeaderOrderList, entries)
{
++x;
if (mutt_strncasecmp(buf, np->data, mutt_strlen(np->data)) == 0)
{
mutt_debug(2, "Reorder: %s matches %s\n", np->data, buf);
break;
}
}
}
ignore = false;
} /* If beginning of header */
if (!ignore)
{
mutt_debug(2, "Reorder: x = %d; hdr_count = %d\n", x, hdr_count);
if (!this_one)
{
this_one = safe_strdup(buf);
this_one_len = mutt_strlen(this_one);
}
else
{
int blen = mutt_strlen(buf);
safe_realloc(&this_one, this_one_len + blen + sizeof(char));
strcat(this_one + this_one_len, buf);
this_one_len += blen;
}
}
} /* while (ftello (in) < off_end) */
/* Do we have anything pending? -- XXX, same code as in above in the loop. */
if (this_one)
{
if (flags & CH_DECODE)
{
if (!address_header_decode(&this_one))
rfc2047_decode(&this_one);
this_one_len = mutt_strlen(this_one);
}
if (!headers[x])
headers[x] = this_one;
else
{
int hlen = mutt_strlen(headers[x]);
safe_realloc(&headers[x], hlen + this_one_len + sizeof(char));
strcat(headers[x] + hlen, this_one);
FREE(&this_one);
}
this_one = NULL;
}
/* Now output the headers in order */
for (x = 0; x < hdr_count; x++)
{
if (headers[x])
{
/* We couldn't do the prefixing when reading because RFC2047
* decoding may have concatenated lines.
*/
if (flags & (CH_DECODE | CH_PREFIX))
{
if (mutt_write_one_header(out, 0, headers[x], flags & CH_PREFIX ? prefix : 0,
mutt_window_wrap_cols(MuttIndexWindow, Wrap), flags) == -1)
{
error = true;
break;
}
}
else
{
if (fputs(headers[x], out) == EOF)
{
error = true;
break;
}
}
}
}
/* Free in a separate loop to be sure that all headers are freed
* in case of error. */
for (x = 0; x < hdr_count; x++)
FREE(&headers[x]);
FREE(&headers);
if (error)
return -1;
return 0;
}
/**
* mutt_copy_header - Copy email header
*
* flags:
* * #CH_DECODE RFC2047 header decoding
* * #CH_FROM retain the "From " message separator
* * #CH_FORCE_FROM give CH_FROM precedence over CH_WEED
* * #CH_MIME ignore MIME fields
* * #CH_NOLEN don't write Content-Length: and Lines:
* * #CH_NONEWLINE don't output a newline after the header
* * #CH_NOSTATUS ignore the Status: and X-Status:
* * #CH_PREFIX quote header with $indent_string
* * #CH_REORDER output header in order specified by `hdr_order'
* * #CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
* * #CH_UPDATE write new Status: and X-Status:
* * #CH_UPDATE_LEN write new Content-Length: and Lines:
* * #CH_XMIT ignore Lines: and Content-Length:
* * #CH_WEED do header weeding
* * #CH_NOQFROM ignore ">From " line
* * #CH_UPDATE_IRT update the In-Reply-To: header
* * #CH_UPDATE_REFS update the References: header
* * #CH_VIRTUAL write virtual header lines too
*
* prefix
* * string to use if CH_PREFIX is set
*/
int mutt_copy_header(FILE *in, struct Header *h, FILE *out, int flags, const char *prefix)
{
char buffer[SHORT_STRING];
if (h->env)
flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
(h->env->refs_changed ? CH_UPDATE_REFS : 0);
if (mutt_copy_hdr(in, out, h->offset, h->content->offset, flags, prefix) == -1)
return -1;
if (flags & CH_TXTPLAIN)
{
char chsbuf[SHORT_STRING];
fputs("MIME-Version: 1.0\n", out);
fputs("Content-Transfer-Encoding: 8bit\n", out);
fputs("Content-Type: text/plain; charset=", out);
mutt_canonical_charset(chsbuf, sizeof(chsbuf),
Charset ? Charset : "us-ascii");
rfc822_cat(buffer, sizeof(buffer), chsbuf, MimeSpecials);
fputs(buffer, out);
fputc('\n', out);
}
if ((flags & CH_UPDATE_IRT) && !STAILQ_EMPTY(&h->env->in_reply_to))
{
fputs("In-Reply-To:", out);
struct ListNode *np;
STAILQ_FOREACH(np, &h->env->in_reply_to, entries)
{
fputc(' ', out);
fputs(np->data, out);
}
fputc('\n', out);
}
if ((flags & CH_UPDATE_REFS) && !STAILQ_EMPTY(&h->env->references))
{
fputs("References:", out);
mutt_write_references(&h->env->references, out, 0);
fputc('\n', out);
}
if ((flags & CH_UPDATE) && (flags & CH_NOSTATUS) == 0)
{
if (h->old || h->read)
{
fputs("Status: ", out);
if (h->read)
fputs("RO", out);
else if (h->old)
fputc('O', out);
fputc('\n', out);
}
if (h->flagged || h->replied)
{
fputs("X-Status: ", out);
if (h->replied)
fputc('A', out);
if (h->flagged)
fputc('F', out);
fputc('\n', out);
}
}
if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0)
{
fprintf(out, "Content-Length: " OFF_T_FMT "\n", h->content->length);
if (h->lines != 0 || h->content->length == 0)
fprintf(out, "Lines: %d\n", h->lines);
}
#ifdef USE_NOTMUCH
if (flags & CH_VIRTUAL)
{
/* Add some fake headers based on notmuch data */
char *folder = nm_header_get_folder(h);
if (folder && !(option(OPT_WEED) && mutt_matches_ignore("folder")))
{
char buf[LONG_STRING];
strfcpy(buf, folder, sizeof(buf));
mutt_pretty_mailbox(buf, sizeof(buf));
fputs("Folder: ", out);
fputs(buf, out);
fputc('\n', out);
}
char *tags = nm_header_get_tags(h);
if (tags && !(option(OPT_WEED) && mutt_matches_ignore("tags")))
{
fputs("Tags: ", out);
fputs(tags, out);
fputc('\n', out);
}
}
#endif
if (flags & CH_UPDATE_LABEL)
{
h->xlabel_changed = false;
if (h->env->x_label != NULL)
if (fprintf(out, "X-Label: %s\n", h->env->x_label) != 10 + strlen(h->env->x_label))
return -1;
}
if ((flags & CH_NONEWLINE) == 0)
{
if (flags & CH_PREFIX)
fputs(prefix, out);
fputc('\n', out); /* add header terminator */
}
if (ferror(out) || feof(out))
return -1;
return 0;
}
/**
* count_delete_lines - Count lines to be deleted in this email body
*
* 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;
long l;
int ch;
if (b->deleted)
{
fseeko(fp, b->offset, SEEK_SET);
for (l = b->length; l; l--)
{
ch = getc(fp);
if (ch == EOF)
break;
if (ch == '\n')
dellines++;
}
dellines -= 3;
*length -= b->length - (84 + datelen);
/* Count the number of digits exceeding the first one to write the size */
for (l = 10; b->length >= l; l *= 10)
(*length)++;
}
else
{
for (b = b->parts; b; b = b->next)
dellines += count_delete_lines(fp, b, length, datelen);
}
return dellines;
}
/**
* _mutt_copy_message - make a copy of a message
* @param fpout Where to write output
* @param fpin Where to get input
* @param hdr Header of message being copied
* @param body Structure of message being copied
* @param flags See below
* @param chflags Flags to mutt_copy_header()
*
* * #MUTT_CM_NOHEADER don't copy header
* * #MUTT_CM_PREFIX quote header and body
* * #MUTT_CM_DECODE decode message body to text/plain
* * #MUTT_CM_DISPLAY displaying output to the user
* * #MUTT_CM_PRINTING printing the message
* * #MUTT_CM_UPDATE update structures in memory after syncing
* * #MUTT_CM_DECODE_PGP used for decoding PGP messages
* * #MUTT_CM_CHARCONV perform character set conversion
*/
int _mutt_copy_message(FILE *fpout, FILE *fpin, struct Header *hdr,
struct Body *body, int flags, int chflags)
{
char prefix[SHORT_STRING];
struct State s;
LOFF_T new_offset = -1;
int rc = 0;
if (flags & MUTT_CM_PREFIX)
{
if (option(OPT_TEXT_FLOWED))
strfcpy(prefix, ">", sizeof(prefix));
else
_mutt_make_string(prefix, sizeof(prefix), NONULL(Prefix), Context, hdr, 0);
}
if (hdr->xlabel_changed)
chflags |= CH_UPDATE_LABEL;
if ((flags & MUTT_CM_NOHEADER) == 0)
{
if (flags & MUTT_CM_PREFIX)
chflags |= CH_PREFIX;
else if (hdr->attach_del && (chflags & CH_UPDATE_LEN))
{
int new_lines;
LOFF_T new_length = body->length;
char date[SHORT_STRING];
mutt_make_date(date, sizeof(date));
int dlen = mutt_strlen(date);
if (dlen == 0)
return -1;
date[5] = '\"';
date[dlen - 1] = '\"';
/* Count the number of lines and bytes to be deleted */
fseeko(fpin, body->offset, SEEK_SET);
new_lines = hdr->lines - count_delete_lines(fpin, body, &new_length, dlen);
/* Copy the headers */
if (mutt_copy_header(fpin, hdr, fpout, chflags | CH_NOLEN | CH_NONEWLINE, NULL))
return -1;
fprintf(fpout, "Content-Length: " OFF_T_FMT "\n", new_length);
if (new_lines <= 0)
new_lines = 0;
else
fprintf(fpout, "Lines: %d\n", new_lines);
putc('\n', fpout);
if (ferror(fpout) || feof(fpout))
return -1;
new_offset = ftello(fpout);
/* Copy the body */
if (fseeko(fpin, body->offset, SEEK_SET) < 0)
return -1;
if (copy_delete_attach(body, fpin, fpout, date))
return -1;
#ifdef DEBUG
{
LOFF_T fail = ((ftello(fpout) - new_offset) - new_length);
if (fail)
{
mutt_error("The length calculation was wrong by %ld bytes", fail);
new_length += fail;
mutt_sleep(1);
}
}
#endif
/* Update original message if we are sync'ing a mailfolder */
if (flags & MUTT_CM_UPDATE)
{
hdr->attach_del = false;
hdr->lines = new_lines;
body->offset = new_offset;
/* update the total size of the mailbox to reflect this deletion */
Context->size -= body->length - new_length;
/*
* if the message is visible, update the visible size of the mailbox
* as well.
*/
if (Context->v2r[hdr->msgno] != -1)
Context->vsize -= body->length - new_length;
body->length = new_length;
mutt_free_body(&body->parts);
}
return 0;
}
if (mutt_copy_header(fpin, hdr, fpout, chflags,
(chflags & CH_PREFIX) ? prefix : NULL) == -1)
return -1;
new_offset = ftello(fpout);
}
if (flags & MUTT_CM_DECODE)
{
/* now make a text/plain version of the message */
memset(&s, 0, sizeof(struct State));
s.fpin = fpin;
s.fpout = fpout;
if (flags & MUTT_CM_PREFIX)
s.prefix = prefix;
if (flags & MUTT_CM_DISPLAY)
s.flags |= MUTT_DISPLAY;
if (flags & MUTT_CM_PRINTING)
s.flags |= MUTT_PRINTING;
if (flags & MUTT_CM_WEED)
s.flags |= MUTT_WEED;
if (flags & MUTT_CM_CHARCONV)
s.flags |= MUTT_CHARCONV;
if (flags & MUTT_CM_REPLYING)
s.flags |= MUTT_REPLYING;
if (WithCrypto && flags & MUTT_CM_VERIFY)
s.flags |= MUTT_VERIFY;
rc = mutt_body_handler(body, &s);
}
else if (WithCrypto && (flags & MUTT_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT))
{
struct Body *cur = NULL;
FILE *fp = NULL;
if ((WithCrypto & APPLICATION_PGP) && (flags & MUTT_CM_DECODE_PGP) &&
(hdr->security & APPLICATION_PGP) && hdr->content->type == TYPEMULTIPART)
{
if (crypt_pgp_decrypt_mime(fpin, &fp, hdr->content, &cur))
return -1;
fputs("MIME-Version: 1.0\n", fpout);
}
if ((WithCrypto & APPLICATION_SMIME) && (flags & MUTT_CM_DECODE_SMIME) &&
(hdr->security & APPLICATION_SMIME) && hdr->content->type == TYPEAPPLICATION)
{
if (crypt_smime_decrypt_mime(fpin, &fp, hdr->content, &cur))
return -1;
}
if (!cur)
{
mutt_error(_("No decryption engine available for message"));
return -1;
}
mutt_write_mime_header(cur, fpout);
fputc('\n', fpout);
if (fseeko(fp, cur->offset, SEEK_SET) < 0)
return -1;
if (mutt_copy_bytes(fp, fpout, cur->length) == -1)
{
safe_fclose(&fp);
mutt_free_body(&cur);
return -1;
}
mutt_free_body(&cur);
safe_fclose(&fp);
}
else
{
if (fseeko(fpin, body->offset, SEEK_SET) < 0)
return -1;
if (flags & MUTT_CM_PREFIX)
{
int c;
size_t bytes = body->length;
fputs(prefix, fpout);
while ((c = fgetc(fpin)) != EOF && bytes--)
{
fputc(c, fpout);
if (c == '\n')
{
fputs(prefix, fpout);
}
}
}
else if (mutt_copy_bytes(fpin, fpout, body->length) == -1)
return -1;
}
if ((flags & MUTT_CM_UPDATE) && (flags & MUTT_CM_NOHEADER) == 0 && new_offset != -1)
{
body->offset = new_offset;
mutt_free_body(&body->parts);
}
return rc;
}
/**
* mutt_copy_message - Copy a message
*
* 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 *fpout, struct Context *src, struct Header *hdr,
int flags, int chflags)
{
struct Message *msg = NULL;
int r;
if ((msg = mx_open_message(src, hdr->msgno)) == NULL)
return -1;
if ((r = _mutt_copy_message(fpout, msg->fp, hdr, hdr->content, flags, chflags)) == 0 &&
(ferror(fpout) || feof(fpout)))
{
mutt_debug(1, "_mutt_copy_message failed to detect EOF!\n");
r = -1;
}
mx_close_message(src, &msg);
return r;
}
/**
* _mutt_append_message - appends a copy of the given message to a mailbox
* @param dest destination mailbox
* @param fpin where to get input
* @param src source mailbox
* @param hdr message being copied
* @param body structure of message being copied
* @param flags mutt_copy_message() flags
* @param chflags mutt_copy_header() flags
* @retval 0 on success
* @retval -1 on error
*/
static int _mutt_append_message(struct Context *dest, FILE *fpin,
struct Context *src, struct Header *hdr,
struct Body *body, int flags, int chflags)
{
char buf[STRING];
struct Message *msg = NULL;
int r;
if (fseeko(fpin, hdr->offset, SEEK_SET) < 0)
return -1;
if (fgets(buf, sizeof(buf), fpin) == NULL)
return -1;
if ((msg = mx_open_new_message(dest, hdr, is_from(buf, NULL, 0, NULL) ? 0 : MUTT_ADD_FROM)) == NULL)
return -1;
if (dest->magic == MUTT_MBOX || dest->magic == MUTT_MMDF)
chflags |= CH_FROM | CH_FORCE_FROM;
chflags |= (dest->magic == MUTT_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
r = _mutt_copy_message(msg->fp, fpin, hdr, body, flags, chflags);
if (mx_commit_message(msg, dest) != 0)
r = -1;
#ifdef USE_NOTMUCH
if (msg->commited_path && dest->magic == MUTT_MAILDIR && src->magic == MUTT_NOTMUCH)
nm_update_filename(src, NULL, msg->commited_path, hdr);
#endif
mx_close_message(dest, &msg);
return r;
}
int mutt_append_message(struct Context *dest, struct Context *src,
struct Header *hdr, int cmflags, int chflags)
{
struct Message *msg = NULL;
int r;
if ((msg = mx_open_message(src, hdr->msgno)) == NULL)
return -1;
r = _mutt_append_message(dest, msg->fp, src, hdr, hdr->content, cmflags, chflags);
mx_close_message(src, &msg);
return r;
}
/**
* copy_delete_attach - Copy a message, deleting marked attachments
* @retval 0 on success
* @retval -1 on failure
*
* This function copies a message body, while deleting _in_the_copy_
* any attachments which are marked for deletion.
* Nothing is changed in the original message -- this is left to the caller.
*/
static int copy_delete_attach(struct Body *b, FILE *fpin, FILE *fpout, char *date)
{
struct Body *part = NULL;
for (part = b->parts; part; part = part->next)
{
if (part->deleted || part->parts)
{
/* Copy till start of this part */
if (mutt_copy_bytes(fpin, fpout, part->hdr_offset - ftello(fpin)))
return -1;
if (part->deleted)
{
fprintf(
fpout,
"Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
"\texpiration=%s; length=" OFF_T_FMT "\n"
"\n",
date + 5, part->length);
if (ferror(fpout))
return -1;
/* Copy the original mime headers */
if (mutt_copy_bytes(fpin, fpout, part->offset - ftello(fpin)))
return -1;
/* Skip the deleted body */
fseeko(fpin, part->offset + part->length, SEEK_SET);
}
else
{
if (copy_delete_attach(part, fpin, fpout, date))
return -1;
}
}
}
/* Copy the last parts */
if (mutt_copy_bytes(fpin, fpout, b->offset + b->length - ftello(fpin)))
return -1;
return 0;
}
/**
* format_address_header - Write address headers to a buffer
*
* This function is the equivalent of mutt_write_address_list(), but writes to
* a buffer instead of writing to a stream. mutt_write_address_list could be
* re-used if we wouldn't store all the decoded headers in a huge array, first.
*
* XXX - fix that.
*/
static void format_address_header(char **h, struct Address *a)
{
char buf[HUGE_STRING];
char cbuf[STRING];
char c2buf[STRING];
char *p = NULL;
int l, linelen, buflen, cbuflen, c2buflen, plen;
linelen = mutt_strlen(*h);
plen = linelen;
buflen = linelen + 3;
safe_realloc(h, buflen);
for (int count = 0; a; a = a->next, count++)
{
struct Address *tmp = a->next;
a->next = NULL;
*buf = *cbuf = *c2buf = '\0';
l = rfc822_write_address(buf, sizeof(buf), a, 0);
a->next = tmp;
if (count && linelen + l > 74)
{
strcpy(cbuf, "\n\t");
linelen = l + 8;
}
else
{
if (a->mailbox)
{
strcpy(cbuf, " ");
linelen++;
}
linelen += l;
}
if (!a->group && a->next && a->next->mailbox)
{
linelen++;
buflen++;
strcpy(c2buf, ",");
}
cbuflen = mutt_strlen(cbuf);
c2buflen = mutt_strlen(c2buf);
buflen += l + cbuflen + c2buflen;
safe_realloc(h, buflen);
p = *h;
strcat(p + plen, cbuf);
plen += cbuflen;
strcat(p + plen, buf);
plen += l;
strcat(p + plen, c2buf);
plen += c2buflen;
}
/* Space for this was allocated in the beginning of this function. */
strcat(p + plen, "\n");
}
static int address_header_decode(char **h)
{
char *s = *h;
int l;
bool rp = false;
struct Address *a = NULL;
struct Address *cur = NULL;
switch (tolower((unsigned char) *s))
{
case 'r':
{
if (mutt_strncasecmp(s, "return-path:", 12) == 0)
{
l = 12;
rp = true;
break;
}
else if (mutt_strncasecmp(s, "reply-to:", 9) == 0)
{
l = 9;
break;
}
return 0;
}
case 'f':
{
if (mutt_strncasecmp(s, "from:", 5) != 0)
return 0;
l = 5;
break;
}
case 'c':
{
if (mutt_strncasecmp(s, "cc:", 3) != 0)
return 0;
l = 3;
break;
}
case 'b':
{
if (mutt_strncasecmp(s, "bcc:", 4) != 0)
return 0;
l = 4;