69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
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/*
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zip_source_call.c -- invoke callback command on zip_source
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Copyright (C) 2009-2014 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_int64_t
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_zip_source_call(zip_source_t *src, void *data, zip_uint64_t length, zip_source_cmd_t command) {
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zip_int64_t ret;
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if ((src->supports & ZIP_SOURCE_MAKE_COMMAND_BITMASK(command)) == 0) {
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zip_error_set(&src->error, ZIP_ER_OPNOTSUPP, 0);
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return -1;
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}
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if (src->src == NULL) {
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ret = src->cb.f(src->ud, data, length, command);
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}
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else {
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ret = src->cb.l(src->src, src->ud, data, length, command);
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}
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if (ret < 0) {
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if (command != ZIP_SOURCE_ERROR && command != ZIP_SOURCE_SUPPORTS) {
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int e[2];
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if (_zip_source_call(src, e, sizeof(e), ZIP_SOURCE_ERROR) < 0) {
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zip_error_set(&src->error, ZIP_ER_INTERNAL, 0);
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}
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else {
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zip_error_set(&src->error, e[0], e[1]);
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}
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}
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}
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return ret;
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}
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