SaraP
109 lines
4.2 KiB
C
109 lines
4.2 KiB
C
/*
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zip_error_sterror.c -- get string representation of struct zip_error
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Copyright (C) 1999-2021 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <zlib.h>
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#include "zipint.h"
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ZIP_EXTERN const char *
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zip_error_strerror(zip_error_t *err) {
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const char *zip_error_string, *system_error_string;
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char buf[128], *s;
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zip_error_fini(err);
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if (err->zip_err < 0 || err->zip_err >= _zip_err_str_count) {
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snprintf(buf, sizeof(buf), "Unknown error %d", err->zip_err);
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buf[sizeof(buf) - 1] = '\0'; /* make sure string is NUL-terminated */
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zip_error_string = NULL;
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system_error_string = buf;
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}
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else {
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zip_error_string = _zip_err_str[err->zip_err].description;
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switch (_zip_err_str[err->zip_err].type) {
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case ZIP_ET_SYS:
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system_error_string = strerror(err->sys_err);
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break;
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case ZIP_ET_ZLIB:
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system_error_string = zError(err->sys_err);
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break;
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case ZIP_ET_LIBZIP: {
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zip_uint8_t error = GET_ERROR_FROM_DETAIL(err->sys_err);
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int index = GET_INDEX_FROM_DETAIL(err->sys_err);
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if (error == 0) {
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system_error_string = NULL;
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}
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else if (error >= _zip_err_details_count) {
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snprintf(buf, sizeof(buf), "invalid detail error %u", error);
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buf[sizeof(buf) - 1] = '\0'; /* make sure string is NUL-terminated */
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system_error_string = buf;
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}
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else if (_zip_err_details[error].type == ZIP_DETAIL_ET_ENTRY && index < MAX_DETAIL_INDEX) {
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snprintf(buf, sizeof(buf), "entry %d: %s", index, _zip_err_details[error].description);
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buf[sizeof(buf) - 1] = '\0'; /* make sure string is NUL-terminated */
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system_error_string = buf;
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}
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else {
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system_error_string = _zip_err_details[error].description;
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}
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break;
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}
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default:
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system_error_string = NULL;
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}
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}
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if (system_error_string == NULL) {
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return zip_error_string;
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}
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else {
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if ((s = (char *)malloc(strlen(system_error_string) + (zip_error_string ? strlen(zip_error_string) + 2 : 0) + 1)) == NULL) {
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return _zip_err_str[ZIP_ER_MEMORY].description;
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}
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sprintf(s, "%s%s%s", (zip_error_string ? zip_error_string : ""), (zip_error_string ? ": " : ""), system_error_string);
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err->str = s;
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return s;
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}
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}
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