909 lines
25 KiB
C++
909 lines
25 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Utility to interrogate and modify the data in the OSX IPC Server
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//
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// $NoKeywords: $
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//=============================================================================
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// README:README
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//
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// This file implements the --wrap for ld on linux that lets file i/o api's
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// behave as if it were running on a case insensitive file system. Unfortunately,
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// this is needed by both steam2 and steam3. It was decided to check the source
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// into both locations, otherwise someone would find the .o and have no idea
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// where to go for the source if it was in the 'other' tree. Also, because this
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// needs to be linked into every elf binary, the .o is checked in for Steam3 so that it is
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// always available. In Steam2 it sits with the PosixWin32.cpp implementation and gets
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// compiled along side of it through the make system. If you are reading this in Steam3,
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// you will probably want to actually make your changes in steam2 and do a baseless merge
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// to the steam3 copy.
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//
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// HOWTO: Add a new function. Add the function with _WRAP to the makefiles as noted below.
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// Add the implementation to pathmatch.cpp - probably mimicking the existing functions.
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// Build steam2 and copy to matching steam3/client. Take the pathmatch.o from steam 2
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// and check it in to steam3 (in the location noted below). Full rebuild (re-link really)
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// of steam3. Test steam and check in.
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//
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// If you are looking at updating this file, please update the following as needed:
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//
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// STEAM2.../Projects/GazelleProto/Client/Engine/obj/RELEASE_NORMAL/libsteam_linux/Common/Misc/pathmatch.o
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// This is where steam2 builds the pathmatch.o out to.
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//
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// STEAM2.../Projects/GazelleProto/Makefile.shlib.base - contains _WRAP references
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// STEAM2.../Projects/Common/Misc/pathmatch.cpp - Where the source is checked in, keep in sync with:
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// STEAM3.../src/common/pathmatch.cpp - should be identical to previous file, but discoverable in steam3.
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// STEAM3.../src/lib/linux32/release/pathmatch.o - steam3 checked in version
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// STEAM3.../src/devtools/makefile_base_posix.mak - look for the _WRAP references
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#ifdef LINUX
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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 <stdint.h>
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#include <strings.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <errno.h>
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#include <signal.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <fcntl.h>
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#include <utime.h>
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#include <map>
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#include <string>
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#include <time.h>
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// Enable to do pathmatch caching. Beware: this code isn't threadsafe.
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// #define DO_PATHMATCH_CACHE
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#ifdef UTF8_PATHMATCH
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#define strcasecmp utf8casecmp
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#endif
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static bool s_bShowDiag;
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#define DEBUG_MSG( ... ) if ( s_bShowDiag ) fprintf( stderr, ##__VA_ARGS__ )
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#define DEBUG_BREAK() __asm__ __volatile__ ( "int $3" )
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#define _COMPILE_TIME_ASSERT(pred) switch(0){case 0:case pred:;}
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#define WRAP( fn, ret, ... ) \
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ret __real_##fn(__VA_ARGS__); \
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ret __wrap_##fn(__VA_ARGS__)
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#define CALL( fn ) __real_##fn
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// Needed by pathmatch code
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extern "C" int __real_access(const char *pathname, int mode);
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extern "C" DIR *__real_opendir(const char *name);
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// UTF-8 work from PhysicsFS: http://icculus.org/physfs/
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// Even if it wasn't under the zlib license, Ryan wrote all this code originally.
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#define UNICODE_BOGUS_CHAR_VALUE 0xFFFFFFFF
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#define UNICODE_BOGUS_CHAR_CODEPOINT '?'
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inline __attribute__ ((always_inline)) static uint32_t utf8codepoint(const char **_str)
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{
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const char *str = *_str;
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uint32_t retval = 0;
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uint32_t octet = (uint32_t) ((uint8_t) *str);
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uint32_t octet2, octet3, octet4;
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if (octet == 0) // null terminator, end of string.
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return 0;
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else if (octet < 128) // one octet char: 0 to 127
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{
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(*_str)++; // skip to next possible start of codepoint.
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return octet;
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}
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else if ((octet > 127) && (octet < 192)) // bad (starts with 10xxxxxx).
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{
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// Apparently each of these is supposed to be flagged as a bogus
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// char, instead of just resyncing to the next valid codepoint.
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(*_str)++; // skip to next possible start of codepoint.
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return UNICODE_BOGUS_CHAR_VALUE;
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}
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else if (octet < 224) // two octets
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{
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octet -= (128+64);
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octet2 = (uint32_t) ((uint8_t) *(++str));
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if ((octet2 & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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*_str += 2; // skip to next possible start of codepoint.
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retval = ((octet << 6) | (octet2 - 128));
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if ((retval >= 0x80) && (retval <= 0x7FF))
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return retval;
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}
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else if (octet < 240) // three octets
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{
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octet -= (128+64+32);
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octet2 = (uint32_t) ((uint8_t) *(++str));
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if ((octet2 & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet3 = (uint32_t) ((uint8_t) *(++str));
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if ((octet3 & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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*_str += 3; // skip to next possible start of codepoint.
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retval = ( ((octet << 12)) | ((octet2-128) << 6) | ((octet3-128)) );
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// There are seven "UTF-16 surrogates" that are illegal in UTF-8.
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switch (retval)
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{
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case 0xD800:
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case 0xDB7F:
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case 0xDB80:
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case 0xDBFF:
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case 0xDC00:
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case 0xDF80:
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case 0xDFFF:
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return UNICODE_BOGUS_CHAR_VALUE;
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}
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// 0xFFFE and 0xFFFF are illegal, too, so we check them at the edge.
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if ((retval >= 0x800) && (retval <= 0xFFFD))
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return retval;
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}
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else if (octet < 248) // four octets
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{
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octet -= (128+64+32+16);
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octet2 = (uint32_t) ((uint8_t) *(++str));
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if ((octet2 & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet3 = (uint32_t) ((uint8_t) *(++str));
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if ((octet3 & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet4 = (uint32_t) ((uint8_t) *(++str));
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if ((octet4 & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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*_str += 4; // skip to next possible start of codepoint.
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retval = ( ((octet << 18)) | ((octet2 - 128) << 12) |
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((octet3 - 128) << 6) | ((octet4 - 128)) );
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if ((retval >= 0x10000) && (retval <= 0x10FFFF))
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return retval;
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}
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// Five and six octet sequences became illegal in rfc3629.
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// We throw the codepoint away, but parse them to make sure we move
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// ahead the right number of bytes and don't overflow the buffer.
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else if (octet < 252) // five octets
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{
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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*_str += 5; // skip to next possible start of codepoint.
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return UNICODE_BOGUS_CHAR_VALUE;
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}
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else // six octets
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{
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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octet = (uint32_t) ((uint8_t) *(++str));
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if ((octet & (128+64)) != 128) // Format isn't 10xxxxxx?
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return UNICODE_BOGUS_CHAR_VALUE;
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*_str += 6; // skip to next possible start of codepoint.
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return UNICODE_BOGUS_CHAR_VALUE;
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}
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return UNICODE_BOGUS_CHAR_VALUE;
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}
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typedef struct CaseFoldMapping
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{
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uint32_t from;
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uint32_t to0;
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uint32_t to1;
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uint32_t to2;
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} CaseFoldMapping;
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typedef struct CaseFoldHashBucket
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{
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const uint8_t count;
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const CaseFoldMapping *list;
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} CaseFoldHashBucket;
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#include "pathmatch_casefolding.h"
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inline __attribute__ ((always_inline)) static void locate_case_fold_mapping(const uint32_t from, uint32_t *to)
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{
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const uint8_t hashed = ((from ^ (from >> 8)) & 0xFF);
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const CaseFoldHashBucket *bucket = &case_fold_hash[hashed];
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const CaseFoldMapping *mapping = bucket->list;
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uint32_t i;
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for (i = 0; i < bucket->count; i++, mapping++)
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{
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if (mapping->from == from)
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{
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to[0] = mapping->to0;
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to[1] = mapping->to1;
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to[2] = mapping->to2;
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return;
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}
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}
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// Not found...there's no remapping for this codepoint.
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to[0] = from;
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to[1] = 0;
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to[2] = 0;
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}
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inline __attribute__ ((always_inline)) static uint32_t *fold_utf8(const char *str)
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{
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uint32_t *retval = new uint32_t[(strlen(str) * 3) + 1];
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uint32_t *dst = retval;
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while (*str)
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{
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const char ch = *str;
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if (ch & 0x80) // high bit set? UTF-8 sequence!
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{
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uint32_t fold[3];
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locate_case_fold_mapping(utf8codepoint(&str), fold);
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*(dst++) = fold[0];
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if (fold[1])
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{
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*(dst++) = fold[1];
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if (fold[2])
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*(dst++) = fold[2];
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}
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}
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else // simple ASCII test.
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{
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*(dst++) = (uint32_t) (((ch >= 'A') && (ch <= 'Z')) ? ch + 32 : ch);
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str++;
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}
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}
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*dst = 0;
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return retval;
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}
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inline __attribute__ ((always_inline)) static int utf8casecmp_loop(const uint32_t *folded1, const uint32_t *folded2)
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{
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while (true)
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{
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const uint32_t ch1 = *(folded1++);
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const uint32_t ch2 = *(folded2++);
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if (ch1 < ch2)
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return -1;
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else if (ch1 > ch2)
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return 1;
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else if (ch1 == 0)
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return 0; // complete match.
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}
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}
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#ifdef UTF8_PATHMATCH
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static int utf8casecmp(const char *str1, const char *str2)
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{
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uint32_t *folded1 = fold_utf8(str1);
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uint32_t *folded2 = fold_utf8(str2);
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const int retval = utf8casecmp_loop(folded1, folded2);
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delete[] folded1;
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delete[] folded2;
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return retval;
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}
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#endif
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// Simple object to help make sure a DIR* from opendir
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// gets closed when it goes out of scope.
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class CDirPtr
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{
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public:
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CDirPtr() { m_pDir = NULL; }
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CDirPtr( DIR *pDir ) : m_pDir(pDir) {}
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~CDirPtr() { Close(); }
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void operator=(DIR *pDir) { Close(); m_pDir = pDir; }
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operator DIR *() { return m_pDir; }
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operator bool() { return m_pDir != NULL; }
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private:
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void Close() { if ( m_pDir ) closedir( m_pDir ); }
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DIR *m_pDir;
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};
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// Object used to temporarily slice a path into a smaller componentent
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// and then repair it when going out of scope. Typically used as an unnamed
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// temp object that is a parameter to a function.
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class CDirTrimmer
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{
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public:
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CDirTrimmer( char * pPath, size_t nTrimIdx )
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{
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m_pPath = pPath;
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m_idx = nTrimIdx;
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m_c = m_pPath[nTrimIdx];
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m_pPath[nTrimIdx] = '\0';
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}
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~CDirTrimmer() { m_pPath[m_idx] = m_c; }
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operator const char *() { return m_pPath; }
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private:
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size_t m_idx;
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char *m_pPath;
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char m_c;
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};
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enum PathMod_t
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{
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kPathUnchanged,
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kPathLowered,
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kPathChanged,
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kPathFailed,
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};
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static bool Descend( char *pPath, size_t nStartIdx, bool bAllowBasenameMismatch, size_t nLevel = 0 )
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{
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DEBUG_MSG( "(%zu) Descend: %s, (%s), %s\n", nLevel, pPath, pPath+nStartIdx, bAllowBasenameMismatch ? "true" : "false " );
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// We assume up through nStartIdx is valid and matching
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size_t nNextSlash = nStartIdx+1;
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// path might be a dir
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if ( pPath[nNextSlash] == '\0' )
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{
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return true;
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}
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bool bIsDir = false; // is the new component a directory for certain?
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while ( pPath[nNextSlash] != '\0' && pPath[nNextSlash] != '/' )
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{
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nNextSlash++;
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}
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// Modify the pPath string
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if ( pPath[nNextSlash] == '/' )
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bIsDir = true;
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// See if we have an immediate match
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if ( __real_access( CDirTrimmer(pPath, nNextSlash), F_OK ) == 0 )
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{
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if ( !bIsDir )
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return true;
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bool bRet = Descend( pPath, nNextSlash, bAllowBasenameMismatch, nLevel+1 );
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if ( bRet )
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return true;
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}
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// Start enumerating dirents
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CDirPtr spDir;
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if ( nStartIdx )
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{
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// we have a path
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spDir = __real_opendir( CDirTrimmer( pPath, nStartIdx ) );
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nStartIdx++;
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}
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else
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{
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// we either start at root or cwd
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const char *pRoot = ".";
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if ( *pPath == '/' )
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{
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pRoot = "/";
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nStartIdx++;
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}
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spDir = __real_opendir( pRoot );
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}
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errno = 0;
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struct dirent *pEntry = spDir ? readdir( spDir ) : NULL;
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char *pszComponent = pPath + nStartIdx;
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size_t cbComponent = nNextSlash - nStartIdx;
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while ( pEntry )
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{
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DEBUG_MSG( "\t(%zu) comparing %s with %s\n", nLevel, pEntry->d_name, (const char *)CDirTrimmer(pszComponent, cbComponent) );
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// the candidate must match the target, but not be a case-identical match (we would
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// have looked there in the short-circuit code above, so don't look again)
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bool bMatches = ( strcasecmp( CDirTrimmer(pszComponent, cbComponent), pEntry->d_name ) == 0 &&
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strcmp( CDirTrimmer(pszComponent, cbComponent), pEntry->d_name ) != 0 );
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if ( bMatches )
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{
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char *pSrc = pEntry->d_name;
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char *pDst = &pPath[nStartIdx];
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// found a match; copy it in.
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while ( *pSrc && (*pSrc != '/') )
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{
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*pDst++ = *pSrc++;
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}
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if ( !bIsDir )
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return true;
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if ( Descend( pPath, nNextSlash, bAllowBasenameMismatch, nLevel+1 ) )
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return true;
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// If descend fails, try more directories
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}
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pEntry = readdir( spDir );
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}
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if ( bIsDir )
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{
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DEBUG_MSG( "(%zu) readdir failed to find '%s' in '%s'\n", nLevel, (const char *)CDirTrimmer(pszComponent, cbComponent), (const char *)CDirTrimmer( pPath, nStartIdx ) );
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}
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// Sometimes it's ok for the filename portion to not match
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// since we might be opening for write. Note that if
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// the filename matches case insensitive, that will be
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// preferred over preserving the input name
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if ( !bIsDir && bAllowBasenameMismatch )
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return true;
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return false;
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}
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#ifdef DO_PATHMATCH_CACHE
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typedef std::map<std::string, std::pair<std::string, time_t> > resultCache_t;
|
|
typedef std::map<std::string, std::pair<std::string, time_t> >::iterator resultCacheItr_t;
|
|
static resultCache_t resultCache;
|
|
static const int k_cMaxCacheLifetimeSeconds = 2;
|
|
#endif // DO_PATHMATCH_CACHE
|
|
|
|
PathMod_t pathmatch( const char *pszIn, char **ppszOut, bool bAllowBasenameMismatch, char *pszOutBuf, size_t OutBufLen )
|
|
{
|
|
// Path matching can be very expensive, and the cost is unpredictable because it
|
|
// depends on how many files are in directories on a user's machine. Therefore
|
|
// it should be disabled whenever possible, and only enabled in environments (such
|
|
// as running with loose files such as out of Perforce) where it is needed.
|
|
static const char *s_pszPathMatchEnabled = getenv("ENABLE_PATHMATCH");
|
|
if ( !s_pszPathMatchEnabled )
|
|
return kPathUnchanged;
|
|
|
|
static const char *s_pszDbgPathMatch = getenv("DBG_PATHMATCH");
|
|
|
|
s_bShowDiag = ( s_pszDbgPathMatch != NULL );
|
|
|
|
*ppszOut = NULL;
|
|
|
|
if ( __real_access( pszIn, F_OK ) == 0 )
|
|
return kPathUnchanged;
|
|
|
|
#ifdef DO_PATHMATCH_CACHE
|
|
resultCacheItr_t cachedResult = resultCache.find( pszIn );
|
|
if ( cachedResult != resultCache.end() )
|
|
{
|
|
unsigned int age = time( NULL ) - cachedResult->second.second;
|
|
const char *pszResult = cachedResult->second.first.c_str();
|
|
if ( pszResult[0] != '\0' || age <= k_cMaxCacheLifetimeSeconds )
|
|
{
|
|
if ( pszResult[0] != '\0' )
|
|
{
|
|
*ppszOut = strdup( pszResult );
|
|
DEBUG_MSG( "Cached '%s' -> '%s'\n", pszIn, *ppszOut );
|
|
return kPathChanged;
|
|
}
|
|
else
|
|
{
|
|
DEBUG_MSG( "Cached '%s' -> kPathFailed\n", pszIn );
|
|
return kPathFailed;
|
|
}
|
|
}
|
|
else if ( age <= k_cMaxCacheLifetimeSeconds )
|
|
{
|
|
DEBUG_MSG( "Rechecking '%s' - cache is %u seconds old\n", pszIn, age );
|
|
}
|
|
}
|
|
#endif // DO_PATHMATCH_CACHE
|
|
|
|
char *pPath;
|
|
if( strlen( pszIn ) >= OutBufLen )
|
|
{
|
|
pPath = strdup( pszIn );
|
|
}
|
|
else
|
|
{
|
|
strncpy( pszOutBuf, pszIn, OutBufLen );
|
|
pPath = pszOutBuf;
|
|
}
|
|
|
|
if ( pPath )
|
|
{
|
|
// I believe this code is broken. I'm guessing someone wanted to avoid lowercasing
|
|
// the path before the steam directory - but it's actually skipping lowercasing
|
|
// whenever steam is found anywhere - including the filename. For example,
|
|
// /home/mikesart/valvesrc/console/l4d2/game/left4dead2_dlc1/particles/steam_fx.pcf
|
|
// winds up only having the "steam_fx.pcf" portion lowercased.
|
|
#ifdef NEVER
|
|
// optimization, if the path contained steam somewhere
|
|
// assume the path up through the component with 'steam' in
|
|
// is valid (because we almost certainly obtained it
|
|
// progamatically
|
|
char *p = strcasestr( pPath, "steam" );
|
|
if ( p )
|
|
{
|
|
while ( p > pPath )
|
|
{
|
|
if ( p[-1] == '/' )
|
|
break;
|
|
p--;
|
|
}
|
|
|
|
if ( ( p == pPath+1 ) && ( *pPath != '/' ) )
|
|
p = pPath;
|
|
}
|
|
else
|
|
{
|
|
p = pPath;
|
|
}
|
|
#else
|
|
char *p = pPath;
|
|
#endif
|
|
|
|
// Try the lower casing of the remaining path
|
|
char *pBasename = p;
|
|
while ( *p )
|
|
{
|
|
if ( *p == '/' )
|
|
pBasename = p+1;
|
|
|
|
*p = tolower(*p);
|
|
p++;
|
|
}
|
|
if ( __real_access( pPath, F_OK ) == 0 )
|
|
{
|
|
*ppszOut = pPath;
|
|
DEBUG_MSG( "Lowered '%s' -> '%s'\n", pszIn, pPath );
|
|
return kPathLowered;
|
|
}
|
|
|
|
// path didn't match lowered successfully, restore the basename
|
|
// if bAllowBasenameMismatch was true
|
|
if ( bAllowBasenameMismatch )
|
|
{
|
|
const char *pSrc = pszIn + (pBasename - pPath);
|
|
while ( *pBasename )
|
|
{
|
|
*pBasename++ = *pSrc++;
|
|
}
|
|
}
|
|
|
|
if ( s_pszDbgPathMatch && strcasestr( s_pszDbgPathMatch, pszIn ) )
|
|
{
|
|
DEBUG_MSG( "Breaking '%s' in '%s'\n", pszIn, s_pszDbgPathMatch );
|
|
DEBUG_BREAK();
|
|
}
|
|
|
|
bool bSuccess = Descend( pPath, 0, bAllowBasenameMismatch );
|
|
if ( bSuccess )
|
|
{
|
|
*ppszOut = pPath;
|
|
DEBUG_MSG( "Matched '%s' -> '%s'\n", pszIn, pPath );
|
|
}
|
|
else
|
|
{
|
|
DEBUG_MSG( "Unmatched %s\n", pszIn );
|
|
}
|
|
|
|
#ifndef DO_PATHMATCH_CACHE
|
|
return bSuccess ? kPathChanged : kPathFailed;
|
|
#else
|
|
time_t now = time(NULL);
|
|
if ( bSuccess )
|
|
{
|
|
resultCache[ pszIn ] = std::make_pair( *ppszOut, now );
|
|
return kPathChanged;
|
|
}
|
|
else
|
|
{
|
|
resultCache[ pszIn ] = std::make_pair( "", now );
|
|
return kPathFailed;
|
|
}
|
|
#endif
|
|
}
|
|
return kPathFailed;
|
|
}
|
|
|
|
// Wrapper object that manages the 'typical' usage cases of pathmatch()
|
|
class CWrap
|
|
{
|
|
public:
|
|
CWrap( const char *pSuppliedPath, bool bAllowMismatchedBasename )
|
|
: m_pSuppliedPath( pSuppliedPath ), m_pBestMatch( NULL )
|
|
{
|
|
m_eResult = pathmatch( m_pSuppliedPath, &m_pBestMatch, bAllowMismatchedBasename, m_BestMatchBuf, sizeof( m_BestMatchBuf ) );
|
|
if ( m_pBestMatch == NULL )
|
|
{
|
|
m_pBestMatch = const_cast<char*>( m_pSuppliedPath );
|
|
}
|
|
}
|
|
|
|
~CWrap()
|
|
{
|
|
if ( ( m_pBestMatch != m_pSuppliedPath ) && ( m_pBestMatch != m_BestMatchBuf ) )
|
|
free( m_pBestMatch );
|
|
}
|
|
|
|
const char *GetBest() const { return m_pBestMatch; }
|
|
const char *GetOriginal() const { return m_pSuppliedPath; }
|
|
PathMod_t GetMatchResult() const { return m_eResult; }
|
|
|
|
operator const char*() { return GetBest(); }
|
|
|
|
private:
|
|
const char *m_pSuppliedPath;
|
|
char *m_pBestMatch;
|
|
char m_BestMatchBuf[ 512 ];
|
|
PathMod_t m_eResult;
|
|
};
|
|
|
|
#ifdef MAIN_TEST
|
|
void usage()
|
|
{
|
|
puts("pathmatch [options] <path>");
|
|
//puts("options:");
|
|
//puts("\t");
|
|
|
|
exit(-1);
|
|
}
|
|
|
|
void test( const char *pszFile, bool bAllowBasenameMismatch )
|
|
{
|
|
char *pNewPath;
|
|
char NewPathBuf[ 512 ];
|
|
PathMod_t nStat = pathmatch( pszFile, &pNewPath, bAllowBasenameMismatch, NewPathBuf, sizeof( NewPathBuf ) );
|
|
|
|
printf("AllowMismatchedBasename: %s\n", bAllowBasenameMismatch ? "true" : "false" );
|
|
printf("Path Was: ");
|
|
switch ( nStat )
|
|
{
|
|
case kPathUnchanged:
|
|
puts("kPathUnchanged");
|
|
break;
|
|
case kPathLowered:
|
|
puts("kPathLowered");
|
|
break;
|
|
case kPathChanged:
|
|
puts("kPathChanged");
|
|
break;
|
|
case kPathFailed:
|
|
puts("kPathFailed");
|
|
break;
|
|
}
|
|
|
|
printf(" Path In: %s\n", pszFile );
|
|
printf("Path Out: %s\n", nStat == kPathUnchanged ? pszFile : pNewPath );
|
|
|
|
if ( pNewPath )
|
|
free( pNewPath );
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
if ( argc <= 1 || argc > 2 )
|
|
usage();
|
|
|
|
test( argv[1], false );
|
|
test( argv[1], true );
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
extern "C" {
|
|
|
|
WRAP(freopen, FILE *, const char *path, const char *mode, FILE *stream)
|
|
{
|
|
// if mode does not have w, a, or +, it's open for read.
|
|
bool bAllowBasenameMismatch = strpbrk( mode, "wa+" ) != NULL;
|
|
CWrap mpath( path, bAllowBasenameMismatch );
|
|
|
|
return CALL(freopen)( mpath, mode, stream );
|
|
}
|
|
|
|
WRAP(fopen, FILE *, const char *path, const char *mode)
|
|
{
|
|
// if mode does not have w, a, or +, it's open for read.
|
|
bool bAllowBasenameMismatch = strpbrk( mode, "wa+" ) != NULL;
|
|
CWrap mpath( path, bAllowBasenameMismatch );
|
|
|
|
return CALL(fopen)( mpath, mode );
|
|
}
|
|
|
|
|
|
WRAP(fopen64, FILE *, const char *path, const char *mode)
|
|
{
|
|
// if mode does not have w, a, or +, it's open for read.
|
|
bool bAllowBasenameMismatch = strpbrk( mode, "wa+" ) != NULL;
|
|
CWrap mpath( path, bAllowBasenameMismatch );
|
|
|
|
return CALL(fopen64)( mpath, mode );
|
|
}
|
|
|
|
WRAP(open, int, const char *pathname, int flags, mode_t mode)
|
|
{
|
|
bool bAllowBasenameMismatch = ((flags & (O_WRONLY | O_RDWR)) != 0);
|
|
CWrap mpath( pathname, bAllowBasenameMismatch );
|
|
return CALL(open)( mpath, flags, mode );
|
|
}
|
|
|
|
WRAP(open64, int, const char *pathname, int flags, mode_t mode)
|
|
{
|
|
bool bAllowBasenameMismatch = ((flags & (O_WRONLY | O_RDWR)) != 0);
|
|
CWrap mpath( pathname, bAllowBasenameMismatch );
|
|
return CALL(open64)( mpath, flags, mode );
|
|
}
|
|
|
|
int __wrap_creat(const char *pathname, mode_t mode)
|
|
{
|
|
return __wrap_open( pathname, O_CREAT|O_WRONLY|O_TRUNC, mode );
|
|
}
|
|
|
|
int __wrap_access(const char *pathname, int mode)
|
|
{
|
|
return __real_access( CWrap( pathname, false ), mode );
|
|
}
|
|
|
|
WRAP(stat, int, const char *path, struct stat *buf)
|
|
{
|
|
return CALL(stat)( CWrap( path, false ), buf );
|
|
}
|
|
|
|
WRAP(lstat, int, const char *path, struct stat *buf)
|
|
{
|
|
return CALL(lstat)( CWrap( path, false ), buf );
|
|
}
|
|
|
|
WRAP(scandir, int, const char *dirp, struct dirent ***namelist,
|
|
int (*filter)(const struct dirent *),
|
|
int (*compar)(const struct dirent **, const struct dirent **))
|
|
{
|
|
return CALL(scandir)( CWrap( dirp, false ), namelist, filter, compar );
|
|
}
|
|
|
|
WRAP(opendir, DIR*, const char *name)
|
|
{
|
|
return CALL(opendir)( CWrap( name, false ) );
|
|
}
|
|
|
|
WRAP(__xstat, int, int __ver, __const char *__filename, struct stat *__stat_buf)
|
|
{
|
|
return CALL(__xstat)( __ver, CWrap( __filename, false), __stat_buf );
|
|
}
|
|
|
|
WRAP(__lxstat, int, int __ver, __const char *__filename, struct stat *__stat_buf)
|
|
{
|
|
return CALL(__lxstat)( __ver, CWrap( __filename, false), __stat_buf );
|
|
}
|
|
|
|
WRAP(__xstat64, int, int __ver, __const char *__filename, struct stat *__stat_buf)
|
|
{
|
|
return CALL(__xstat64)( __ver, CWrap( __filename, false), __stat_buf );
|
|
}
|
|
|
|
WRAP(__lxstat64, int, int __ver, __const char *__filename, struct stat *__stat_buf)
|
|
{
|
|
return CALL(__lxstat64)( __ver, CWrap( __filename, false), __stat_buf );
|
|
}
|
|
|
|
WRAP(chmod, int, const char *path, mode_t mode)
|
|
{
|
|
return CALL(chmod)( CWrap( path, false), mode );
|
|
}
|
|
|
|
WRAP(chown, int, const char *path, uid_t owner, gid_t group)
|
|
{
|
|
return CALL(chown)( CWrap( path, false), owner, group );
|
|
}
|
|
|
|
WRAP(lchown, int, const char *path, uid_t owner, gid_t group)
|
|
{
|
|
return CALL(lchown)( CWrap( path, false), owner, group );
|
|
}
|
|
|
|
WRAP(symlink, int, const char *oldpath, const char *newpath)
|
|
{
|
|
return CALL(symlink)( CWrap( oldpath, false), CWrap( newpath, true ) );
|
|
}
|
|
|
|
WRAP(link, int, const char *oldpath, const char *newpath)
|
|
{
|
|
return CALL(link)( CWrap( oldpath, false), CWrap( newpath, true ) );
|
|
}
|
|
|
|
WRAP(mknod, int, const char *pathname, mode_t mode, dev_t dev)
|
|
{
|
|
return CALL(mknod)( CWrap( pathname, true), mode, dev );
|
|
}
|
|
|
|
WRAP(mount, int, const char *source, const char *target,
|
|
const char *filesystemtype, unsigned long mountflags,
|
|
const void *data)
|
|
{
|
|
return CALL(mount)( CWrap( source, false ), CWrap( target, false ), filesystemtype, mountflags, data );
|
|
}
|
|
|
|
WRAP(unlink, int, const char *pathname)
|
|
{
|
|
return CALL(unlink)( CWrap( pathname, false ) );
|
|
}
|
|
|
|
WRAP(mkfifo, int, const char *pathname, mode_t mode)
|
|
{
|
|
return CALL(mkfifo)( CWrap( pathname, true ), mode );
|
|
}
|
|
|
|
WRAP(rename, int, const char *oldpath, const char *newpath)
|
|
{
|
|
return CALL(rename)( CWrap( oldpath, false), CWrap( newpath, true ) );
|
|
}
|
|
|
|
WRAP(utime, int, const char *filename, const struct utimbuf *times)
|
|
{
|
|
return CALL(utime)( CWrap( filename, false), times );
|
|
}
|
|
|
|
WRAP(utimes, int, const char *filename, const struct timeval times[2])
|
|
{
|
|
return CALL(utimes)( CWrap( filename, false), times );
|
|
}
|
|
|
|
WRAP(realpath, char *, const char *path, char *resolved_path)
|
|
{
|
|
return CALL(realpath)( CWrap( path, true ), resolved_path );
|
|
}
|
|
|
|
WRAP(mkdir, int, const char *pathname, mode_t mode)
|
|
{
|
|
return CALL(mkdir)( CWrap( pathname, true ), mode );
|
|
}
|
|
|
|
WRAP(rmdir, char *, const char *pathname)
|
|
{
|
|
return CALL(rmdir)( CWrap( pathname, false ) );
|
|
}
|
|
|
|
};
|
|
|
|
#endif
|