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Annotation of embedaddon/php/ext/zip/lib/zip_source_read.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:   zip_source_read.c -- read data from zip_source
                      3:   Copyright (C) 2009 Dieter Baron and Thomas Klausner
                      4: 
                      5:   This file is part of libzip, a library to manipulate ZIP archives.
                      6:   The authors can be contacted at <libzip@nih.at>
                      7: 
                      8:   Redistribution and use in source and binary forms, with or without
                      9:   modification, are permitted provided that the following conditions
                     10:   are met:
                     11:   1. Redistributions of source code must retain the above copyright
                     12:      notice, this list of conditions and the following disclaimer.
                     13:   2. Redistributions in binary form must reproduce the above copyright
                     14:      notice, this list of conditions and the following disclaimer in
                     15:      the documentation and/or other materials provided with the
                     16:      distribution.
                     17:   3. The names of the authors may not be used to endorse or promote
                     18:      products derived from this software without specific prior
                     19:      written permission.
                     20:  
                     21:   THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
                     22:   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     23:   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
                     25:   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
                     27:   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     28:   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
                     29:   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     30:   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
                     31:   IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32: */
                     33: 
                     34: 
                     35: 
                     36: #include "zipint.h"
                     37: 
                     38: 
                     39: 
                     40: ZIP_EXTERN(zip_int64_t)
                     41: zip_source_read(struct zip_source *src, void *data, zip_uint64_t len)
                     42: {
                     43:     zip_int64_t ret;
                     44: 
                     45:     if (!src->is_open || len > ZIP_INT64_MAX || (len > 0 && data == NULL)) {
                     46:        src->error_source = ZIP_LES_INVAL;
                     47:        return -1;
                     48:     }
                     49: 
                     50:     if (src->src == NULL)
                     51:        return src->cb.f(src->ud, data, len, ZIP_SOURCE_READ);
                     52: 
                     53:     ret = src->cb.l(src->src, src->ud, data, len, ZIP_SOURCE_READ);
                     54: 
                     55:     if (ret < 0) {
                     56:        if (ret == ZIP_SOURCE_ERR_LOWER)
                     57:            src->error_source = ZIP_LES_LOWER;
                     58:        else
                     59:            src->error_source = ZIP_LES_UPPER;
                     60:        return -1;
                     61:     }
                     62:     
                     63:     return ret;
                     64: }