| /* |
| zip_fdopen.c -- open read-only archive from file descriptor |
| Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner |
| |
| This file is part of libzip, a library to manipulate ZIP archives. |
| The authors can be contacted at <libzip@nih.at> |
| |
| 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" |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| |
| ZIP_EXTERN zip_t * |
| zip_fdopen(int fd_orig, int _flags, int *zep) { |
| int fd; |
| FILE *fp; |
| zip_t *za; |
| zip_source_t *src; |
| struct zip_error error; |
| |
| if (_flags < 0 || (_flags & ~(ZIP_CHECKCONS | ZIP_RDONLY))) { |
| _zip_set_open_error(zep, NULL, ZIP_ER_INVAL); |
| return NULL; |
| } |
| |
| /* We dup() here to avoid messing with the passed in fd. |
| We could not restore it to the original state in case of error. */ |
| |
| if ((fd = dup(fd_orig)) < 0) { |
| _zip_set_open_error(zep, NULL, ZIP_ER_OPEN); |
| return NULL; |
| } |
| |
| if ((fp = fdopen(fd, "rb")) == NULL) { |
| close(fd); |
| _zip_set_open_error(zep, NULL, ZIP_ER_OPEN); |
| return NULL; |
| } |
| |
| zip_error_init(&error); |
| if ((src = zip_source_filep_create(fp, 0, -1, &error)) == NULL) { |
| fclose(fp); |
| _zip_set_open_error(zep, &error, 0); |
| zip_error_fini(&error); |
| return NULL; |
| } |
| |
| if ((za = zip_open_from_source(src, _flags, &error)) == NULL) { |
| zip_source_free(src); |
| _zip_set_open_error(zep, &error, 0); |
| zip_error_fini(&error); |
| return NULL; |
| } |
| |
| zip_error_fini(&error); |
| close(fd_orig); |
| return za; |
| } |