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79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*------------------------------------------------------------------
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* safe_str_constraint.h
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*
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* October 2008, Bo Berry
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*
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* Copyright (c) 2008-2011 Cisco Systems
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*------------------------------------------------------------------
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*/
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#ifndef __SAFE_STR_CONSTRAINT_H__
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#define __SAFE_STR_CONSTRAINT_H__
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#include "safeclib_private.h"
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/*
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* Function used by the libraries to invoke the registered
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* runtime-constraint handler. Always needed.
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*/
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extern void invoke_safe_str_constraint_handler(
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const char *msg,
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void *ptr,
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errno_t error);
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/*
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* Safe C Lib internal string routine to consolidate error handling
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*/
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static inline void handle_error(char *orig_dest, rsize_t orig_dmax,
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char *err_msg, errno_t err_code)
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{
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#ifdef SAFECLIB_STR_NULL_SLACK
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/* null string to eliminate partial copy */
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while (orig_dmax) { *orig_dest = '\0'; orig_dmax--; orig_dest++; }
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#else
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*orig_dest = '\0';
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#endif
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invoke_safe_str_constraint_handler(err_msg, NULL, err_code);
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return;
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}
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static inline void handle_wc_error(wchar_t *orig_dest, rsize_t orig_dmax,
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char *err_msg, errno_t err_code)
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{
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#ifdef SAFECLIB_STR_NULL_SLACK
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/* null string to eliminate partial copy */
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while (orig_dmax) { *orig_dest = L'\0'; orig_dmax--; orig_dest++; }
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#else
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*orig_dest = L'\0';
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#endif
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invoke_safe_str_constraint_handler(err_msg, NULL, err_code);
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return;
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}
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#endif /* __SAFE_STR_CONSTRAINT_H__ */
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