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gpg: New option --mimemode. 

* g10/gpg.c (oMimemode): New.
(opts): Add --mimemode.
(main): Use --mimemode only in rfc4880bis compliance mode.
* g10/options.h (struct opt): Add field "mimemode".
* g10/build-packet.c (do_plaintext): Allow for mode 'm'.
* g10/encrypt.c (encrypt_simple, encrypt_crypt): Use 'm' if requested.
* g10/plaintext.c (handle_plaintext): Handle 'm' mode.
* g10/sign.c (write_plaintext_packet): Handle 'm' mode.
(sign_file, sign_symencrypt_file): Use 'm' if requested.
--

Thsi patch prepares for a proposed change in RFC4880bis to support a
MIME flag.  A literal data packet with the mime flag set is handled
like a 't' or 'u' but CR are not removed.  The PLAINTEXT status line
will also indicate a MIME content.

If --mimemode is used without --rfc4880bis 't' will be used.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-07-13 13:31:12 +02:00
parent 95810929f7
commit e148c3caa9
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
6 changed files with 30 additions and 11 deletions
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1
g10/build-packet.c
View File

@ -635,6 +635,7 @@ do_plaintext( IOBUF out, int ctb, PKT_plaintext *pt )
write_header(out, ctb, calc_plaintext( pt ) );
log_assert (pt->mode == 'b' || pt->mode == 't' || pt->mode == 'u'
|| pt->mode == 'm'
|| pt->mode == 'l' || pt->mode == '1');
iobuf_put(out, pt->mode );
iobuf_put(out, pt->namelen );

4
g10/encrypt.c
View File

@ -335,7 +335,7 @@ encrypt_simple (const char *filename, int mode, int use_seskey)
{
/* Note that PT has been initialized above in !no_literal mode. */
pt->timestamp = make_timestamp();
pt->mode = opt.textmode? 't' : 'b';
pt->mode = opt.mimemode? 'm' : opt.textmode? 't' : 'b';
pt->len = filesize;
pt->new_ctb = !pt->len;
pt->buf = inp;
@ -674,7 +674,7 @@ encrypt_crypt (ctrl_t ctrl, int filefd, const char *filename,
if (!opt.no_literal)
{
pt->timestamp = make_timestamp();
pt->mode = opt.textmode ? 't' : 'b';
pt->mode = opt.mimemode? 'm' : opt.textmode ? 't' : 'b';
pt->len = filesize;
pt->new_ctb = !pt->len;
pt->buf = inp;

12
g10/gpg.c
View File

@ -169,6 +169,7 @@ enum cmd_and_opt_values
aServer,
aTOFUPolicy,
oMimemode,
oTextmode,
oNoTextmode,
oExpert,
@ -532,7 +533,8 @@ static ARGPARSE_OPTS opts[] = {
ARGPARSE_s_i (oBZ2CompressLevel, "bzip2-compress-level", "@"),
ARGPARSE_s_n (oBZ2DecompressLowmem, "bzip2-decompress-lowmem", "@"),
ARGPARSE_s_n (oTextmodeShort, NULL, "@"),
ARGPARSE_s_n (oMimemode, "mimemode", "@"),
ARGPARSE_s_n (oTextmode, "textmode", N_("use canonical text mode")),
ARGPARSE_s_n (oTextmode, "textmode", N_("use canonical text mode")),
ARGPARSE_s_n (oNoTextmode, "no-textmode", "@"),
@ -2887,9 +2889,11 @@ main (int argc, char **argv)
pargs.r.ret_str, utf8_strings);
break;
case oMimemode: opt.mimemode = opt.textmode = 1; break;
case oTextmodeShort: opt.textmode = 2; break;
case oTextmode: opt.textmode=1; break;
case oNoTextmode: opt.textmode=0; break;
case oNoTextmode: opt.textmode=opt.mimemode=0; break;
case oExpert: opt.expert = 1; break;
case oNoExpert: opt.expert = 0; break;
case oDefSigExpire:
@ -3447,6 +3451,10 @@ main (int argc, char **argv)
if (opt.flags.rfc4880bis)
log_info ("WARNING: using experimental features from RFC4880bis!\n");
else
{
opt.mimemode = 0; /* This will use text mode instead. */
}
if (eyes_only) {
if (opt.set_filename)

1
g10/options.h
View File

@ -57,6 +57,7 @@ struct
int dry_run;
int autostart;
int list_only;
int mimemode;
int textmode;
int expert;
const char *def_sig_expire;

15
g10/plaintext.c
View File

@ -217,11 +217,16 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
static off_t count = 0;
int err = 0;
int c;
int convert = (pt->mode == 't' || pt->mode == 'u');
int convert;
#ifdef __riscos__
int filetype = 0xfff;
#endif
if (pt->mode == 't' || pt->mode == 'u' || pt->mode == 'm')
convert = pt->mode;
else
convert = 0;
/* Let people know what the plaintext info is. This allows the
receiving program to try and do something different based on the
format code (say, recode UTF-8 to local). */
@ -279,8 +284,10 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
if (mfx->md)
gcry_md_putc (mfx->md, c);
#ifndef HAVE_DOSISH_SYSTEM
if (c == '\r') /* convert to native line ending */
continue; /* fixme: this hack might be too simple */
/* Convert to native line ending. */
/* fixme: this hack might be too simple */
if (c == '\r' && convert != 'm')
continue;
#endif
if (fp)
{
@ -354,7 +361,7 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
if (mfx->md)
gcry_md_putc (mfx->md, c);
#ifndef HAVE_DOSISH_SYSTEM
if (convert && c == '\r')
if (c == '\r' && convert != 'm')
continue; /* fixme: this hack might be too simple */
#endif
if (fp)

8
g10/sign.c
View File

@ -605,7 +605,7 @@ write_plaintext_packet (IOBUF out, IOBUF inp, const char *fname, int ptmode)
* data, it is not possible to know the used length
* without a double read of the file - to avoid that
* we simple use partial length packets. */
if ( ptmode == 't' )
if ( ptmode == 't' || ptmode == 'u' || ptmode == 'm')
filesize = 0;
}
else
@ -1033,7 +1033,8 @@ sign_file (ctrl_t ctrl, strlist_t filenames, int detached, strlist_t locusr,
}
else {
rc = write_plaintext_packet (out, inp, fname,
opt.textmode && !outfile ? 't':'b');
opt.textmode && !outfile ?
(opt.mimemode? 'm':'t'):'b');
}
/* catch errors from above */
@ -1337,7 +1338,8 @@ sign_symencrypt_file (ctrl_t ctrl, const char *fname, strlist_t locusr)
/* Pipe data through all filters; i.e. write the signed stuff */
/*(current filters: zip - encrypt - armor)*/
rc = write_plaintext_packet (out, inp, fname, opt.textmode ? 't':'b');
rc = write_plaintext_packet (out, inp, fname,
opt.textmode ? (opt.mimemode?'m':'t'):'b');
if (rc)
goto leave;