87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
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/*
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zip_fdopen.c -- open read-only archive from file descriptor
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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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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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ZIP_EXTERN zip_t *
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zip_fdopen(int fd_orig, int _flags, int *zep) {
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int fd;
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FILE *fp;
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zip_t *za;
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zip_source_t *src;
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struct zip_error error;
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if (_flags < 0 || (_flags & ~(ZIP_CHECKCONS | ZIP_RDONLY))) {
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_zip_set_open_error(zep, NULL, ZIP_ER_INVAL);
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return NULL;
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}
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/* We dup() here to avoid messing with the passed in fd.
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We could not restore it to the original state in case of error. */
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if ((fd = dup(fd_orig)) < 0) {
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_zip_set_open_error(zep, NULL, ZIP_ER_OPEN);
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return NULL;
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}
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if ((fp = fdopen(fd, "rb")) == NULL) {
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close(fd);
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_zip_set_open_error(zep, NULL, ZIP_ER_OPEN);
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return NULL;
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}
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zip_error_init(&error);
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if ((src = zip_source_filep_create(fp, 0, -1, &error)) == NULL) {
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fclose(fp);
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_zip_set_open_error(zep, &error, 0);
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zip_error_fini(&error);
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return NULL;
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}
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if ((za = zip_open_from_source(src, _flags, &error)) == NULL) {
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zip_source_free(src);
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_zip_set_open_error(zep, &error, 0);
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zip_error_fini(&error);
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return NULL;
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}
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zip_error_fini(&error);
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close(fd_orig);
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return za;
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}
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