86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file safeguards.h A number of safeguards to prevent using unsafe methods.
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*
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* Unsafe methods are, for example, strndup and strncpy because they may leave the
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* string without a null termination, but also strdup and strndup because they can
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* return nullptr and then all strdups would need to be guarded against that instead
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* of using the current MallocT/ReallocT/CallocT technique of just giving the user
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* an error that too much memory was used instead of spreading that code though
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* the whole code base.
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*/
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#ifndef SAFEGUARDS_H
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#define SAFEGUARDS_H
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/* Use MallocT instead. */
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#define malloc SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use MallocT instead. */
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#define calloc SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use ReallocT instead. */
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#define realloc SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use stredup instead. */
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#define strdup SAFEGUARD_DO_NOT_USE_THIS_METHOD
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#define strndup SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use strecpy instead. */
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#define strcpy SAFEGUARD_DO_NOT_USE_THIS_METHOD
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#define strncpy SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use strecat instead. */
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#define strcat SAFEGUARD_DO_NOT_USE_THIS_METHOD
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#define strncat SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use seprintf instead. */
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#define sprintf SAFEGUARD_DO_NOT_USE_THIS_METHOD
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#define snprintf SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use vseprintf instead. */
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#define vsprintf SAFEGUARD_DO_NOT_USE_THIS_METHOD
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#define vsnprintf SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use fgets instead. */
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#define gets SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* No clear replacement. */
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#define strtok SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use our own templated implementation instead of a macro or function with only one type. */
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#ifdef min
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#undef min
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#endif
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/* Use our own templated implementation instead of a macro or function with only one type. */
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#ifdef max
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#undef max
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#endif
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/* Use our own templated implementation instead of a macro or function with only one type. */
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#ifdef abs
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#undef abs
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#endif
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#if defined(NETWORK_CORE_OS_ABSTRACTION_H) && defined(_WIN32)
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/* Use NetworkError::GetLast() instead of errno, or do not (indirectly) include network/core/os_abstraction.h.
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* Winsock does not set errno, but one should rather call WSAGetLastError. NetworkError::GetLast abstracts that away. */
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#ifdef errno
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#undef errno
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#endif
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#define errno SAFEGUARD_DO_NOT_USE_THIS_METHOD
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/* Use NetworkError::AsString() instead of strerror, or do not (indirectly) include network/core/os_abstraction.h.
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* Winsock errors are not handled by strerror, but one should rather call FormatMessage. NetworkError::AsString abstracts that away. */
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#define strerror SAFEGUARD_DO_NOT_USE_THIS_METHOD
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#endif /* defined(NETWORK_CORE_OS_ABSTRACTION_H) && defined(_WIN32) */
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#endif /* SAFEGUARDS_H */
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