76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
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/*
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zip_source_open.c -- open zip_source (prepare for reading)
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Copyright (C) 2009-2017 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 int
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zip_source_open(zip_source_t *src) {
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if (src->source_closed) {
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return -1;
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}
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if (src->write_state == ZIP_SOURCE_WRITE_REMOVED) {
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zip_error_set(&src->error, ZIP_ER_DELETED, 0);
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return -1;
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}
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if (ZIP_SOURCE_IS_OPEN_READING(src)) {
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if ((zip_source_supports(src) & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_SEEK)) == 0) {
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zip_error_set(&src->error, ZIP_ER_INUSE, 0);
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return -1;
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}
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}
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else {
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if (ZIP_SOURCE_IS_LAYERED(src)) {
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if (zip_source_open(src->src) < 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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}
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if (_zip_source_call(src, NULL, 0, ZIP_SOURCE_OPEN) < 0) {
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if (ZIP_SOURCE_IS_LAYERED(src)) {
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zip_source_close(src->src);
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}
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return -1;
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}
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}
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src->eof = false;
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src->had_read_error = false;
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_zip_error_clear(&src->error);
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src->open_count++;
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return 0;
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}
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