76 lines
2.3 KiB
C
76 lines
2.3 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) 2009-2010 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 struct zip *
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zip_fdopen(int fd_orig, int _flags, int *zep)
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{
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int fd;
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FILE *fp;
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unsigned int flags;
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if (_flags < 0) {
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if (zep)
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*zep = ZIP_ER_INVAL;
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return NULL;
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}
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flags = (unsigned int)_flags;
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if (flags & ZIP_TRUNCATE) {
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*zep = 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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*zep = 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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*zep = ZIP_ER_OPEN;
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return NULL;
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}
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close(fd_orig);
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return _zip_open(NULL, fp, flags, zep);
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}
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