374 lines
8.8 KiB
C
374 lines
8.8 KiB
C
|
/**
|
|||
|
|
* WinPR: Windows Portable Runtime
|
|||
|
|
* File Functions
|
|||
|
|
*
|
|||
|
|
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
|
|||
|
|
*
|
|||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|||
|
|
* you may not use this file except in compliance with the License.
|
|||
|
|
* You may obtain a copy of the License at
|
|||
|
|
*
|
|||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|||
|
|
*
|
|||
|
|
* Unless required by applicable law or agreed to in writing, software
|
|||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|||
|
|
* See the License for the specific language governing permissions and
|
|||
|
|
* limitations under the License.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
#ifdef HAVE_CONFIG_H
|
|||
|
|
#include "config.h"
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#include <winpr/crt.h>
|
|||
|
|
#include <winpr/handle.h>
|
|||
|
|
|
|||
|
|
#include <winpr/file.h>
|
|||
|
|
|
|||
|
|
#ifdef HAVE_UNISTD_H
|
|||
|
|
#include <unistd.h>
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#ifdef HAVE_FCNTL_H
|
|||
|
|
#include <fcntl.h>
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#include "../log.h"
|
|||
|
|
#define TAG WINPR_TAG("file")
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* File System Behavior in the Microsoft Windows Environment:
|
|||
|
|
* http://download.microsoft.com/download/4/3/8/43889780-8d45-4b2e-9d3a-c696a890309f/File%20System%20Behavior%20Overview.pdf
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
LPSTR FilePatternFindNextWildcardA(LPCSTR lpPattern, DWORD* pFlags)
|
|||
|
|
{
|
|||
|
|
LPSTR lpWildcard;
|
|||
|
|
*pFlags = 0;
|
|||
|
|
lpWildcard = strpbrk(lpPattern, "*?~");
|
|||
|
|
|
|||
|
|
if (lpWildcard)
|
|||
|
|
{
|
|||
|
|
if (*lpWildcard == '*')
|
|||
|
|
{
|
|||
|
|
*pFlags = WILDCARD_STAR;
|
|||
|
|
return lpWildcard;
|
|||
|
|
}
|
|||
|
|
else if (*lpWildcard == '?')
|
|||
|
|
{
|
|||
|
|
*pFlags = WILDCARD_QM;
|
|||
|
|
return lpWildcard;
|
|||
|
|
}
|
|||
|
|
else if (*lpWildcard == '~')
|
|||
|
|
{
|
|||
|
|
if (lpWildcard[1] == '*')
|
|||
|
|
{
|
|||
|
|
*pFlags = WILDCARD_DOS_STAR;
|
|||
|
|
return lpWildcard;
|
|||
|
|
}
|
|||
|
|
else if (lpWildcard[1] == '?')
|
|||
|
|
{
|
|||
|
|
*pFlags = WILDCARD_DOS_QM;
|
|||
|
|
return lpWildcard;
|
|||
|
|
}
|
|||
|
|
else if (lpWildcard[1] == '.')
|
|||
|
|
{
|
|||
|
|
*pFlags = WILDCARD_DOS_DOT;
|
|||
|
|
return lpWildcard;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return NULL;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static BOOL FilePatternMatchSubExpressionA(LPCSTR lpFileName, size_t cchFileName, LPCSTR lpX,
|
|||
|
|
size_t cchX, LPCSTR lpY, size_t cchY, LPCSTR lpWildcard,
|
|||
|
|
LPSTR* ppMatchEnd)
|
|||
|
|
{
|
|||
|
|
LPSTR lpMatch;
|
|||
|
|
|
|||
|
|
if (!lpFileName)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (*lpWildcard == '*')
|
|||
|
|
{
|
|||
|
|
/*
|
|||
|
|
* S
|
|||
|
|
* <-----<
|
|||
|
|
* X | | e Y
|
|||
|
|
* X * Y == (0)----->-(1)->-----(2)-----(3)
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* State 0: match 'X'
|
|||
|
|
*/
|
|||
|
|
if (_strnicmp(lpFileName, lpX, cchX) != 0)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* State 1: match 'S' or 'e'
|
|||
|
|
*
|
|||
|
|
* We use 'e' to transition to state 2
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* State 2: match Y
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if (cchY != 0)
|
|||
|
|
{
|
|||
|
|
/* TODO: case insensitive character search */
|
|||
|
|
lpMatch = strchr(&lpFileName[cchX], *lpY);
|
|||
|
|
|
|||
|
|
if (!lpMatch)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (_strnicmp(lpMatch, lpY, cchY) != 0)
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
lpMatch = (LPSTR)&lpFileName[cchFileName];
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* State 3: final state
|
|||
|
|
*/
|
|||
|
|
*ppMatchEnd = (LPSTR)&lpMatch[cchY];
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
else if (*lpWildcard == '?')
|
|||
|
|
{
|
|||
|
|
/**
|
|||
|
|
* X S Y
|
|||
|
|
* X ? Y == (0)---(1)---(2)---(3)
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* State 0: match 'X'
|
|||
|
|
*/
|
|||
|
|
if (cchFileName < cchX)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (_strnicmp(lpFileName, lpX, cchX) != 0)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* State 1: match 'S'
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* State 2: match Y
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if (cchY != 0)
|
|||
|
|
{
|
|||
|
|
/* TODO: case insensitive character search */
|
|||
|
|
lpMatch = strchr(&lpFileName[cchX + 1], *lpY);
|
|||
|
|
|
|||
|
|
if (!lpMatch)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (_strnicmp(lpMatch, lpY, cchY) != 0)
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
if ((cchX + 1) > cchFileName)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
lpMatch = (LPSTR)&lpFileName[cchX + 1];
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* State 3: final state
|
|||
|
|
*/
|
|||
|
|
*ppMatchEnd = (LPSTR)&lpMatch[cchY];
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
else if (*lpWildcard == '~')
|
|||
|
|
{
|
|||
|
|
WLog_ERR(TAG, "warning: unimplemented '~' pattern match");
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL FilePatternMatchA(LPCSTR lpFileName, LPCSTR lpPattern)
|
|||
|
|
{
|
|||
|
|
BOOL match;
|
|||
|
|
LPSTR lpTail;
|
|||
|
|
size_t cchTail;
|
|||
|
|
size_t cchPattern;
|
|||
|
|
size_t cchFileName;
|
|||
|
|
DWORD dwFlags;
|
|||
|
|
DWORD dwNextFlags;
|
|||
|
|
LPSTR lpWildcard;
|
|||
|
|
LPSTR lpNextWildcard;
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Wild Card Matching
|
|||
|
|
*
|
|||
|
|
* '*' matches 0 or more characters
|
|||
|
|
* '?' matches exactly one character
|
|||
|
|
*
|
|||
|
|
* '~*' DOS_STAR - matches 0 or more characters until encountering and matching final '.'
|
|||
|
|
*
|
|||
|
|
* '~?' DOS_QM - matches any single character, or upon encountering a period or end of name
|
|||
|
|
* string, advances the expresssion to the end of the set of contiguous DOS_QMs.
|
|||
|
|
*
|
|||
|
|
* '~.' DOS_DOT - matches either a '.' or zero characters beyond name string.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if (!lpPattern)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (!lpFileName)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
cchPattern = strlen(lpPattern);
|
|||
|
|
cchFileName = strlen(lpFileName);
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* First and foremost the file system starts off name matching with the expression “*”.
|
|||
|
|
* If the expression contains a single wild card character ‘*’ all matches are satisfied
|
|||
|
|
* immediately. This is the most common wild card character used in Windows and expression
|
|||
|
|
* evaluation is optimized by looking for this character first.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if ((lpPattern[0] == '*') && (cchPattern == 1))
|
|||
|
|
return TRUE;
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Subsequently evaluation of the “*X” expression is performed. This is a case where
|
|||
|
|
* the expression starts off with a wild card character and contains some non-wild card
|
|||
|
|
* characters towards the tail end of the name. This is evaluated by making sure the
|
|||
|
|
* expression starts off with the character ‘*’ and does not contain any wildcards in
|
|||
|
|
* the latter part of the expression. The tail part of the expression beyond the first
|
|||
|
|
* character ‘*’ is matched against the file name at the end uppercasing each character
|
|||
|
|
* if necessary during the comparison.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if (lpPattern[0] == '*')
|
|||
|
|
{
|
|||
|
|
lpTail = (LPSTR)&lpPattern[1];
|
|||
|
|
cchTail = strlen(lpTail);
|
|||
|
|
|
|||
|
|
if (!FilePatternFindNextWildcardA(lpTail, &dwFlags))
|
|||
|
|
{
|
|||
|
|
/* tail contains no wildcards */
|
|||
|
|
if (cchFileName < cchTail)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if (_stricmp(&lpFileName[cchFileName - cchTail], lpTail) == 0)
|
|||
|
|
return TRUE;
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* The remaining expressions are evaluated in a non deterministic
|
|||
|
|
* finite order as listed below, where:
|
|||
|
|
*
|
|||
|
|
* 'S' is any single character
|
|||
|
|
* 'S-.' is any single character except the final '.'
|
|||
|
|
* 'e' is a null character transition
|
|||
|
|
* 'EOF' is the end of the name string
|
|||
|
|
*
|
|||
|
|
* S
|
|||
|
|
* <-----<
|
|||
|
|
* X | | e Y
|
|||
|
|
* X * Y == (0)----->-(1)->-----(2)-----(3)
|
|||
|
|
*
|
|||
|
|
*
|
|||
|
|
* S-.
|
|||
|
|
* <-----<
|
|||
|
|
* X | | e Y
|
|||
|
|
* X ~* Y == (0)----->-(1)->-----(2)-----(3)
|
|||
|
|
*
|
|||
|
|
*
|
|||
|
|
* X S S Y
|
|||
|
|
* X ?? Y == (0)---(1)---(2)---(3)---(4)
|
|||
|
|
*
|
|||
|
|
*
|
|||
|
|
* X S-. S-. Y
|
|||
|
|
* X ~?~? == (0)---(1)-----(2)-----(3)---(4)
|
|||
|
|
* | |_______|
|
|||
|
|
* | ^ |
|
|||
|
|
* |_______________|
|
|||
|
|
* ^EOF of .^
|
|||
|
|
*
|
|||
|
|
*/
|
|||
|
|
lpWildcard = FilePatternFindNextWildcardA(lpPattern, &dwFlags);
|
|||
|
|
|
|||
|
|
if (lpWildcard)
|
|||
|
|
{
|
|||
|
|
LPSTR lpX;
|
|||
|
|
LPSTR lpY;
|
|||
|
|
size_t cchX;
|
|||
|
|
size_t cchY;
|
|||
|
|
LPSTR lpMatchEnd = NULL;
|
|||
|
|
LPSTR lpSubPattern;
|
|||
|
|
size_t cchSubPattern;
|
|||
|
|
LPSTR lpSubFileName;
|
|||
|
|
size_t cchSubFileName;
|
|||
|
|
size_t cchWildcard;
|
|||
|
|
size_t cchNextWildcard;
|
|||
|
|
cchSubPattern = cchPattern;
|
|||
|
|
lpSubPattern = (LPSTR)lpPattern;
|
|||
|
|
cchSubFileName = cchFileName;
|
|||
|
|
lpSubFileName = (LPSTR)lpFileName;
|
|||
|
|
cchWildcard = ((dwFlags & WILDCARD_DOS) ? 2 : 1);
|
|||
|
|
lpNextWildcard = FilePatternFindNextWildcardA(&lpWildcard[cchWildcard], &dwNextFlags);
|
|||
|
|
|
|||
|
|
if (!lpNextWildcard)
|
|||
|
|
{
|
|||
|
|
lpX = (LPSTR)lpSubPattern;
|
|||
|
|
cchX = (lpWildcard - lpSubPattern);
|
|||
|
|
lpY = (LPSTR)&lpSubPattern[cchX + cchWildcard];
|
|||
|
|
cchY = (cchSubPattern - (lpY - lpSubPattern));
|
|||
|
|
match = FilePatternMatchSubExpressionA(lpSubFileName, cchSubFileName, lpX, cchX, lpY,
|
|||
|
|
cchY, lpWildcard, &lpMatchEnd);
|
|||
|
|
return match;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
while (lpNextWildcard)
|
|||
|
|
{
|
|||
|
|
cchSubFileName = cchFileName - (lpSubFileName - lpFileName);
|
|||
|
|
cchNextWildcard = ((dwNextFlags & WILDCARD_DOS) ? 2 : 1);
|
|||
|
|
lpX = (LPSTR)lpSubPattern;
|
|||
|
|
cchX = (lpWildcard - lpSubPattern);
|
|||
|
|
lpY = (LPSTR)&lpSubPattern[cchX + cchWildcard];
|
|||
|
|
cchY = (lpNextWildcard - lpWildcard) - cchWildcard;
|
|||
|
|
match = FilePatternMatchSubExpressionA(lpSubFileName, cchSubFileName, lpX, cchX,
|
|||
|
|
lpY, cchY, lpWildcard, &lpMatchEnd);
|
|||
|
|
|
|||
|
|
if (!match)
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
lpSubFileName = lpMatchEnd;
|
|||
|
|
cchWildcard = cchNextWildcard;
|
|||
|
|
lpWildcard = lpNextWildcard;
|
|||
|
|
dwFlags = dwNextFlags;
|
|||
|
|
lpNextWildcard =
|
|||
|
|
FilePatternFindNextWildcardA(&lpWildcard[cchWildcard], &dwNextFlags);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
/* no wildcard characters */
|
|||
|
|
if (_stricmp(lpFileName, lpPattern) == 0)
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|