diff options
Diffstat (limited to 'g10/encrypt.c')
| -rw-r--r-- | g10/encrypt.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/g10/encrypt.c b/g10/encrypt.c index d0e142714..687b4344e 100644 --- a/g10/encrypt.c +++ b/g10/encrypt.c @@ -1,7 +1,7 @@ /* encrypt.c - Main encryption driver * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, * 2006, 2009 Free Software Foundation, Inc. - * Copyright (C) 2016 g10 Code GmbH + * Copyright (C) 2016, 2023 g10 Code GmbH * * This file is part of GnuPG. * @@ -17,6 +17,7 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, see <https://www.gnu.org/licenses/>. + * SPDX-License-Identifier: GPL-3.0-or-later */ #include <config.h> @@ -409,6 +410,8 @@ encrypt_simple (const char *filename, int mode, int use_seskey) text_filter_context_t tfx; progress_filter_context_t *pfx; int do_compress = !!default_compress_algo(); + char peekbuf[32]; + int peekbuflen; if (!gnupg_rng_is_compliant (opt.compliance)) { @@ -445,6 +448,14 @@ encrypt_simple (const char *filename, int mode, int use_seskey) return rc; } + peekbuflen = iobuf_ioctl (inp, IOBUF_IOCTL_PEEK, sizeof peekbuf, peekbuf); + if (peekbuflen < 0) + { + peekbuflen = 0; + if (DBG_FILTER) + log_debug ("peeking at input failed\n"); + } + handle_progress (pfx, inp, filename); if (opt.textmode) @@ -509,10 +520,11 @@ encrypt_simple (const char *filename, int mode, int use_seskey) if (do_compress && cfx.dek && (cfx.dek->use_mdc || cfx.dek->use_aead) - && is_file_compressed(filename, &rc)) + && !opt.explicit_compress_option + && is_file_compressed (peekbuf, peekbuflen)) { if (opt.verbose) - log_info(_("'%s' already compressed\n"), filename); + log_info(_("'%s' already compressed\n"), filename? filename: "[stdin]"); do_compress = 0; } @@ -780,6 +792,8 @@ encrypt_crypt (ctrl_t ctrl, int filefd, const char *filename, progress_filter_context_t *pfx; PK_LIST pk_list; int do_compress; + char peekbuf[32]; + int peekbuflen; if (filefd != -1 && filename) return gpg_error (GPG_ERR_INV_ARG); /* Both given. */ @@ -852,6 +866,14 @@ encrypt_crypt (ctrl_t ctrl, int filefd, const char *filename, if (opt.verbose) log_info (_("reading from '%s'\n"), iobuf_get_fname_nonnull (inp)); + peekbuflen = iobuf_ioctl (inp, IOBUF_IOCTL_PEEK, sizeof peekbuf, peekbuf); + if (peekbuflen < 0) + { + peekbuflen = 0; + if (DBG_FILTER) + log_debug ("peeking at input failed\n"); + } + handle_progress (pfx, inp, filename); if (opt.textmode) @@ -884,10 +906,11 @@ encrypt_crypt (ctrl_t ctrl, int filefd, const char *filename, * ciphertext attacks. */ if (do_compress && (cfx.dek->use_mdc || cfx.dek->use_aead) - && is_file_compressed (filename, &rc2)) + && !opt.explicit_compress_option + && is_file_compressed (peekbuf, peekbuflen)) { if (opt.verbose) - log_info(_("'%s' already compressed\n"), filename); + log_info(_("'%s' already compressed\n"), filename? filename: "[stdin]"); do_compress = 0; } if (rc2) |