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/*
* Copyright (C) 1996-2000,2002 Michael R. Elkins <me@mutt.org>
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include "mutt.h"
#include "mailbox.h"
#include "mx.h"
#include "copy.h"
#include "rfc2047.h"
#include "mime.h"
#include "mutt_crypt.h"
#include "mutt_idna.h"
#include "mutt_curses.h"
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h> /* needed for SEEK_SET under SunOS 4.1.4 */
static int address_header_decode (char **str);
static int copy_delete_attach (BODY *b, FILE *fpin, FILE *fpout, char *date);
/* 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)
{
int from = 0;
int this_is_from;
int ignore = 0;
char buf[LONG_STRING]; /* should be long enough to get most fields in one pass */
char *nl;
LIST *t;
char **headers;
int hdr_count;
int x;
char *this_one = NULL;
size_t this_one_len = 0;
int error;
if (ftello (in) != off_start)
fseeko (in, off_start, 0);
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 begining of a header? */
if (nl && buf[0] != ' ' && buf[0] != '\t')
{
ignore = 1;
if (!from && mutt_strncmp ("From ", buf, 5) == 0)
{
if ((flags & CH_FROM) == 0)
continue;
from = 1;
}
else if (flags & (CH_NOQFROM) &&
ascii_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)) &&
(ascii_strncasecmp ("Status:", buf, 7) == 0 ||
ascii_strncasecmp ("X-Status:", buf, 9) == 0))
continue;
if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
(ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
ascii_strncasecmp ("Lines:", buf, 6) == 0))
continue;
if ((flags & CH_UPDATE_REFS) &&
ascii_strncasecmp ("References:", buf, 11) == 0)
continue;
if ((flags & CH_UPDATE_IRT) &&
ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
continue;
ignore = 0;
}
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)
{
for (t = HeaderOrderList; t; t = t->next)
{
dprint(3, (debugfile, "Reorder list: %s\n", t->data));
hdr_count++;
}
}
dprint (1, (debugfile, "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 begining 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);
}
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); /* __STRCAT_CHECKED__ */
FREE (&this_one);
}
this_one = NULL;
}
ignore = 1;
this_is_from = 0;
if (!from && mutt_strncmp ("From ", buf, 5) == 0)
{
if ((flags & CH_FROM) == 0)
continue;
this_is_from = from = 1;
}
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, Ignore) &&
!mutt_matches_ignore (buf, UnIgnore))
continue;
if ((flags & CH_WEED_DELIVERED) &&
ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
continue;
if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
(ascii_strncasecmp ("Status:", buf, 7) == 0 ||
ascii_strncasecmp ("X-Status:", buf, 9) == 0))
continue;
if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
(ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
ascii_strncasecmp ("Lines:", buf, 6) == 0))
continue;
if ((flags & CH_MIME) &&
((ascii_strncasecmp ("content-", buf, 8) == 0 &&
(ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
ascii_strncasecmp ("mime-version:", buf, 13) == 0))
continue;
if ((flags & CH_UPDATE_REFS) &&
ascii_strncasecmp ("References:", buf, 11) == 0)
continue;
if ((flags & CH_UPDATE_IRT) &&
ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
continue;
/* Find x -- the array entry where this header is to be saved */
if (flags & CH_REORDER)
{
for (t = HeaderOrderList, x = 0 ; (t) ; t = t->next, x++)
{
if (!ascii_strncasecmp (buf, t->data, mutt_strlen (t->data)))
{
dprint(2, (debugfile, "Reorder: %s matches %s\n", t->data, buf));
break;
}
}
}
ignore = 0;
} /* If beginning of header */
if (!ignore)
{
dprint (2, (debugfile, "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); /* __STRCAT_CHECKED__ */
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);
}
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); /* __STRCAT_CHECKED__ */
FREE (&this_one);
}
this_one = NULL;
}
/* Now output the headers in order */
for (x = 0; x < hdr_count; x++)
{
if (headers[x])
{
#if 0
if (flags & CH_DECODE)
rfc2047_decode (&headers[x]);
#endif
/* We couldn't do the prefixing when reading because RFC 2047
* 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_term_width (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);
}
/* 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_str
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
prefix
string to use if CH_PREFIX is set
*/
int
mutt_copy_header (FILE *in, 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) && h->env->in_reply_to)
{
LIST *listp = h->env->in_reply_to;
fputs ("In-Reply-To:", out);
for (; listp; listp = listp->next)
{
fputc (' ', out);
fputs (listp->data, out);
}
fputc ('\n', out);
}
if ((flags & CH_UPDATE_REFS) && 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);
}
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 the number of lines and bytes to be deleted in this body*/
static int count_delete_lines (FILE *fp, 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;
}
/* make a copy of a message
*
* fpout where to write output
* fpin where to get input
* hdr header of message being copied
* body structure of message being copied
* flags
* M_CM_NOHEADER don't copy header
* M_CM_PREFIX quote header and body
* M_CM_DECODE decode message body to text/plain
* M_CM_DISPLAY displaying output to the user
* M_CM_PRINTING printing the message
* M_CM_UPDATE update structures in memory after syncing
* M_CM_DECODE_PGP used for decoding PGP messages
* M_CM_CHARCONV perform character set conversion
* chflags flags to mutt_copy_header()
*/
int
_mutt_copy_message (FILE *fpout, FILE *fpin, HEADER *hdr, BODY *body,
int flags, int chflags)
{
char prefix[SHORT_STRING];
STATE s;
LOFF_T new_offset = -1;
int rc = 0;
if (flags & M_CM_PREFIX)
{
if (option (OPTTEXTFLOWED))
strfcpy (prefix, ">", sizeof (prefix));
else
_mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context, hdr, 0);
}
if ((flags & M_CM_NOHEADER) == 0)
{
if (flags & M_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));
date[5] = date[mutt_strlen (date) - 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, mutt_strlen (date));
/* 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 */
fseeko (fpin, body->offset, SEEK_SET);
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 & M_CM_UPDATE)
{
hdr->attach_del = 0;
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 & M_CM_DECODE)
{
/* now make a text/plain version of the message */
memset (&s, 0, sizeof (STATE));
s.fpin = fpin;
s.fpout = fpout;
if (flags & M_CM_PREFIX)
s.prefix = prefix;
if (flags & M_CM_DISPLAY)
s.flags |= M_DISPLAY;
if (flags & M_CM_PRINTING)
s.flags |= M_PRINTING;
if (flags & M_CM_WEED)
s.flags |= M_WEED;
if (flags & M_CM_CHARCONV)
s.flags |= M_CHARCONV;
if (flags & M_CM_REPLYING)
s.flags |= M_REPLYING;
if (WithCrypto && flags & M_CM_VERIFY)
s.flags |= M_VERIFY;
rc = mutt_body_handler (body, &s);
}
else if (WithCrypto
&& (flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT))
{
BODY *cur = NULL;
FILE *fp;
if ((WithCrypto & APPLICATION_PGP)
&& (flags & M_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 & M_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);
fseeko (fp, cur->offset, 0);
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
{
fseeko (fpin, body->offset, 0);
if (flags & M_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 & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
&& new_offset != -1)
{
body->offset = new_offset;
mutt_free_body (&body->parts);
}
return rc;
}
/* 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, CONTEXT *src, HEADER *hdr, int flags,
int chflags)
{
MESSAGE *msg;
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)))
{
dprint (1, (debugfile, "_mutt_copy_message failed to detect EOF!\n"));
r = -1;
}
mx_close_message (&msg);
return r;
}
/* appends a copy of the given message to a mailbox
*
* dest destination mailbox
* fpin where to get input
* src source mailbox
* hdr message being copied
* body structure of message being copied
* flags mutt_copy_message() flags
* chflags mutt_copy_header() flags
*/
int
_mutt_append_message (CONTEXT *dest, FILE *fpin, CONTEXT *src, HEADER *hdr,
BODY *body, int flags, int chflags)
{
char buf[STRING];
MESSAGE *msg;
int r;
fseeko (fpin, hdr->offset, 0);
if (fgets (buf, sizeof (buf), fpin) == NULL)
return -1;
if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
return -1;
if (dest->magic == M_MBOX || dest->magic == M_MMDF)
chflags |= CH_FROM | CH_FORCE_FROM;
chflags |= (dest->magic == M_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;
mx_close_message (&msg);
return r;
}
int
mutt_append_message (CONTEXT *dest, CONTEXT *src, HEADER *hdr, int cmflags,
int chflags)
{
MESSAGE *msg;
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 (&msg);
return r;
}
/*
* 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.
*
* The function will return 0 on success and -1 on failure.
*/
static int copy_delete_attach (BODY *b, FILE *fpin, FILE *fpout, char *date)
{
BODY *part;
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;
}
/*
* 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, ADDRESS *a)
{
char buf[HUGE_STRING];
char cbuf[STRING];
char c2buf[STRING];
char *p = NULL;
int l, linelen, buflen, count, cbuflen, c2buflen, plen;
linelen = mutt_strlen (*h);
plen = linelen;
buflen = linelen + 3;
safe_realloc (h, buflen);
for (count = 0; a; a = a->next, count++)
{
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"); /* __STRCPY_CHECKED__ */
linelen = l + 8;
}
else
{
if (a->mailbox)
{
strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
linelen++;
}
linelen += l;
}
if (!a->group && a->next && a->next->mailbox)
{
linelen++;
buflen++;
strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
}
cbuflen = mutt_strlen (cbuf);
c2buflen = mutt_strlen (c2buf);
buflen += l + cbuflen + c2buflen;
safe_realloc (h, buflen);
p = *h;
strcat (p + plen, cbuf); /* __STRCAT_CHECKED__ */
plen += cbuflen;
strcat (p + plen, buf); /* __STRCAT_CHECKED__ */
plen += l;
strcat (p + plen, c2buf); /* __STRCAT_CHECKED__ */
plen += c2buflen;
}
/* Space for this was allocated in the beginning of this function. */
strcat (p + plen, "\n"); /* __STRCAT_CHECKED__ */
}
static int address_header_decode (char **h)
{
char *s = *h;
int l, rp = 0;
ADDRESS *a = NULL;
ADDRESS *cur = NULL;
switch (tolower ((unsigned char) *s))
{
case 'r':
{
if (ascii_strncasecmp (s, "return-path:", 12) == 0)
{
l = 12;
rp = 1;
break;
}
else if (ascii_strncasecmp (s, "reply-to:", 9) == 0)
{
l = 9;
break;
}
return 0;
}
case 'f':
{
if (ascii_strncasecmp (s, "from:", 5))
return 0;
l = 5;
break;
}
case 'c':
{
if (ascii_strncasecmp (s, "cc:", 3))
return 0;
l = 3;
break;
}
case 'b':
{
if (ascii_strncasecmp (s, "bcc:", 4))
return 0;
l = 4;
break;
}
case 's':
{
if (ascii_strncasecmp (s, "sender:", 7))
return 0;
l = 7;
break;
}
case 't':
{
if (ascii_strncasecmp (s, "to:", 3))
return 0;
l = 3;
break;
}
case 'm':
{
if (ascii_strncasecmp (s, "mail-followup-to:", 17))
return 0;
l = 17;
break;
}
default: return 0;
}
if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
return 0;
mutt_addrlist_to_local (a);
rfc2047_decode_adrlist (a);
for (cur = a; cur; cur = cur->next)
if (cur->personal)
rfc822_dequote_comment (cur->personal);
/* angle brackets for return path are mandated by RfC5322,
* so leave Return-Path as-is */
if (rp)
*h = safe_strdup (s);
else
{
*h = safe_calloc (1, l + 2);
strfcpy (*h, s, l + 1);
format_address_header (h, a);
}
rfc822_free_address (&a);
FREE (&s);
return 1;
}
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