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-rw-r--r--src/Common/libzip/zip_source_get_file_attributes.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_source_get_file_attributes.c b/src/Common/libzip/zip_source_get_file_attributes.c
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+++ b/src/Common/libzip/zip_source_get_file_attributes.c
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+/*
+ zip_source_get_file_attributes.c -- get attributes for file from source
+ Copyright (C) 2020 Dieter Baron and Thomas Klausner
+
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <info@libzip.org>
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ 3. The names of the authors may not be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+ OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "zipint.h"
+
+ZIP_EXTERN void
+zip_file_attributes_init(zip_file_attributes_t *attributes) {
+ attributes->valid = 0;
+ attributes->version = 1;
+}
+
+int
+zip_source_get_file_attributes(zip_source_t *src, zip_file_attributes_t *attributes) {
+ if (src->source_closed) {
+ return -1;
+ }
+ if (attributes == NULL) {
+ zip_error_set(&src->error, ZIP_ER_INVAL, 0);
+ return -1;
+ }
+
+ zip_file_attributes_init(attributes);
+
+ if (src->supports & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_GET_FILE_ATTRIBUTES)) {
+ if (_zip_source_call(src, attributes, sizeof(*attributes), ZIP_SOURCE_GET_FILE_ATTRIBUTES) < 0) {
+ return -1;
+ }
+ }
+
+ if (ZIP_SOURCE_IS_LAYERED(src)) {
+ zip_file_attributes_t lower_attributes;
+
+ zip_file_attributes_init(&lower_attributes);
+
+ if (zip_source_get_file_attributes(src->src, &lower_attributes) < 0) {
+ zip_error_set_from_source(&src->error, src->src);
+ return -1;
+ }
+
+ if ((lower_attributes.valid & ZIP_FILE_ATTRIBUTES_HOST_SYSTEM) && (attributes->valid & ZIP_FILE_ATTRIBUTES_HOST_SYSTEM) == 0) {
+ attributes->host_system = lower_attributes.host_system;
+ attributes->valid |= ZIP_FILE_ATTRIBUTES_HOST_SYSTEM;
+ }
+ if ((lower_attributes.valid & ZIP_FILE_ATTRIBUTES_ASCII) && (attributes->valid & ZIP_FILE_ATTRIBUTES_ASCII) == 0) {
+ attributes->ascii = lower_attributes.ascii;
+ attributes->valid |= ZIP_FILE_ATTRIBUTES_ASCII;
+ }
+ if ((lower_attributes.valid & ZIP_FILE_ATTRIBUTES_VERSION_NEEDED)) {
+ if (attributes->valid & ZIP_FILE_ATTRIBUTES_VERSION_NEEDED) {
+ attributes->version_needed = ZIP_MAX(lower_attributes.version_needed, attributes->version_needed);
+ }
+ else {
+ attributes->version_needed = lower_attributes.version_needed;
+ attributes->valid |= ZIP_FILE_ATTRIBUTES_VERSION_NEEDED;
+ }
+ }
+ if ((lower_attributes.valid & ZIP_FILE_ATTRIBUTES_EXTERNAL_FILE_ATTRIBUTES) && (attributes->valid & ZIP_FILE_ATTRIBUTES_EXTERNAL_FILE_ATTRIBUTES) == 0) {
+ attributes->external_file_attributes = lower_attributes.external_file_attributes;
+ attributes->valid |= ZIP_FILE_ATTRIBUTES_EXTERNAL_FILE_ATTRIBUTES;
+ }
+ if ((lower_attributes.valid & ZIP_FILE_ATTRIBUTES_GENERAL_PURPOSE_BIT_FLAGS)) {
+ if (attributes->valid & ZIP_FILE_ATTRIBUTES_GENERAL_PURPOSE_BIT_FLAGS) {
+ /* only take from lower level what is not defined at current level */
+ lower_attributes.general_purpose_bit_mask &= ~attributes->general_purpose_bit_mask;
+
+ attributes->general_purpose_bit_flags |= lower_attributes.general_purpose_bit_flags & lower_attributes.general_purpose_bit_mask;
+ attributes->general_purpose_bit_mask |= lower_attributes.general_purpose_bit_mask;
+ }
+ else {
+ attributes->valid |= ZIP_FILE_ATTRIBUTES_GENERAL_PURPOSE_BIT_FLAGS;
+ attributes->general_purpose_bit_flags = lower_attributes.general_purpose_bit_flags;
+ attributes->general_purpose_bit_mask = lower_attributes.general_purpose_bit_mask;
+ }
+ }
+ }
+
+ return 0;
+}