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