65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
|
||
zip_source_read.c -- read data from zip_source
|
||
Copyright (C) 2009 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"
|
||
|
||
|
||
|
||
zip_int64_t
|
||
zip_source_read(struct zip_source *src, void *data, zip_uint64_t len)
|
||
{
|
||
zip_int64_t ret;
|
||
|
||
if (!src->is_open || len > ZIP_INT64_MAX || (len > 0 && data == NULL)) {
|
||
src->error_source = ZIP_LES_INVAL;
|
||
return -1;
|
||
}
|
||
|
||
if (src->src == NULL)
|
||
return src->cb.f(src->ud, data, len, ZIP_SOURCE_READ);
|
||
|
||
ret = src->cb.l(src->src, src->ud, data, len, ZIP_SOURCE_READ);
|
||
|
||
if (ret < 0) {
|
||
if (ret == ZIP_SOURCE_ERR_LOWER)
|
||
src->error_source = ZIP_LES_LOWER;
|
||
else
|
||
src->error_source = ZIP_LES_UPPER;
|
||
return -1;
|
||
}
|
||
|
||
return ret;
|
||
}
|