[PATCH v4 1/4] kernelbase: Implement PathCchFindExtension.
Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com> --- v2: Fix apply failure due to mail client text encoding. v3: Avoid possible buffer overrun. Add more tests. Thanks to Nikolay. v4: Revert back to using function checks to skip tests. Add more tests. .../api-ms-win-core-path-l1-1-0.spec | 2 +- dlls/kernelbase/kernelbase.spec | 2 +- dlls/kernelbase/path.c | 34 +++++ dlls/kernelbase/tests/path.c | 122 ++++++++++++++++++ include/pathcch.h | 3 + 5 files changed, 161 insertions(+), 2 deletions(-) diff --git a/dlls/api-ms-win-core-path-l1-1-0/api-ms-win-core-path-l1-1-0.spec b/dlls/api-ms-win-core-path-l1-1-0/api-ms-win-core-path-l1-1-0.spec index 287c5d61d9..7b812eb49d 100644 --- a/dlls/api-ms-win-core-path-l1-1-0/api-ms-win-core-path-l1-1-0.spec +++ b/dlls/api-ms-win-core-path-l1-1-0/api-ms-win-core-path-l1-1-0.spec @@ -9,7 +9,7 @@ @ stub PathCchCanonicalizeEx @ stub PathCchCombine @ stub PathCchCombineEx -@ stub PathCchFindExtension +@ stdcall PathCchFindExtension(wstr long ptr) kernelbase.PathCchFindExtension @ stub PathCchIsRoot @ stub PathCchRemoveBackslash @ stub PathCchRemoveBackslashEx diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec index f3b4fd131f..2372db821e 100644 --- a/dlls/kernelbase/kernelbase.spec +++ b/dlls/kernelbase/kernelbase.spec @@ -1038,7 +1038,7 @@ # @ stub PathCchCanonicalizeEx # @ stub PathCchCombine # @ stub PathCchCombineEx -# @ stub PathCchFindExtension +@ stdcall PathCchFindExtension(wstr long ptr) # @ stub PathCchIsRoot # @ stub PathCchRemoveBackslash # @ stub PathCchRemoveBackslashEx diff --git a/dlls/kernelbase/path.c b/dlls/kernelbase/path.c index 373c34e979..b051986031 100644 --- a/dlls/kernelbase/path.c +++ b/dlls/kernelbase/path.c @@ -1,5 +1,6 @@ /* * Copyright 2018 Nikolay Sivov + * Copyright 2018 Zhiyi Zhang * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -65,3 +66,36 @@ HRESULT WINAPI PathCchAddBackslashEx(WCHAR *path, SIZE_T size, WCHAR **endptr, S return S_OK; } + +HRESULT WINAPI PathCchFindExtension(const WCHAR *path, SIZE_T size, const WCHAR **extension) +{ + const WCHAR *lastpoint = NULL; + SIZE_T counter = 0; + + TRACE("%s %lu %p\n", wine_dbgstr_w(path), size, extension); + + if (!path || !size || size > PATHCCH_MAX_CCH) + { + *extension = NULL; + return E_INVALIDARG; + } + + while (*path) + { + if (*path == '\\' || *path == ' ') + lastpoint = NULL; + else if (*path == '.') + lastpoint = path; + + path++; + counter++; + if (counter == size || counter == PATHCCH_MAX_CCH) + { + *extension = NULL; + return E_INVALIDARG; + } + } + + *extension = lastpoint ? lastpoint : path; + return S_OK; +} diff --git a/dlls/kernelbase/tests/path.c b/dlls/kernelbase/tests/path.c index cdba51bf3f..5408b6b9fd 100644 --- a/dlls/kernelbase/tests/path.c +++ b/dlls/kernelbase/tests/path.c @@ -2,6 +2,7 @@ * Path tests for kernelbase.dll * * Copyright 2017 Michael Müller + * Copyright 2018 Zhiyi Zhang * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -32,6 +33,7 @@ HRESULT (WINAPI *pPathCchAddBackslash)(WCHAR *out, SIZE_T size); HRESULT (WINAPI *pPathCchAddBackslashEx)(WCHAR *out, SIZE_T size, WCHAR **endptr, SIZE_T *remaining); HRESULT (WINAPI *pPathCchCombineEx)(WCHAR *out, SIZE_T size, const WCHAR *path1, const WCHAR *path2, DWORD flags); +HRESULT (WINAPI *pPathCchFindExtension)(const WCHAR *path, SIZE_T size, const WCHAR **extension); static const struct { @@ -245,6 +247,124 @@ static void test_PathCchAddBackslashEx(void) } } +struct findextension_test +{ + const CHAR *path; + INT extension_offset; +}; + +static const struct findextension_test findextension_tests[] = +{ + /* Normal */ + {"1.exe", 1}, + {"C:1.exe", 3}, + {"C:\\1.exe", 4}, + {"\\1.exe", 2}, + {"\\\\1.exe", 3}, + {"\\\\?\\C:1.exe", 7}, + {"\\\\?\\C:\\1.exe", 8}, + {"\\\\?\\UNC\\1.exe", 9}, + {"\\\\?\\UNC\\192.168.1.1\\1.exe", 21}, + {"\\\\?\\Volume{e51a1864-6f2d-4019-b73d-f4e60e600c26}\\1.exe", 50}, + + /* Contains forward slash */ + {"C:\\a/1.exe", 6}, + {"/1.exe", 2}, + {"//1.exe", 3}, + {"C:\\a/b/1.exe", 8}, + {"/a/1.exe", 4}, + {"/a/1.exe", 4}, + + /* Malformed */ + {"", 0}, + {" ", 1}, + {".", 0}, + {"..", 1}, + {"a", 1}, + {"a.", 1}, + {".a.b.", 4}, + {"a. ", 3}, + {"a.\\", 3}, + {"\\\\?\\UNC\\192.168.1.1", 17}, + {"\\\\?\\UNC\\192.168.1.1\\", 20}, + {"\\\\?\\UNC\\192.168.1.1\\a", 21} +}; + +static void test_PathCchFindExtension(void) +{ + WCHAR pathW[PATHCCH_MAX_CCH + 1] = {0}; + const WCHAR *extension; + HRESULT hr; + INT i; + + if (!pPathCchFindExtension) + { + win_skip("PathCchFindExtension() is not available.\n"); + return; + } + + /* Arguments check */ + extension = (const WCHAR *)0xdeadbeef; + hr = pPathCchFindExtension(NULL, PATHCCH_MAX_CCH, &extension); + ok(hr == E_INVALIDARG, "expect result %#x, got %#x\n", E_INVALIDARG, hr); + ok(extension == NULL, "Expect extension null, got %p\n", extension); + + extension = (const WCHAR *)0xdeadbeef; + hr = pPathCchFindExtension(pathW, 0, &extension); + ok(hr == E_INVALIDARG, "expect result %#x, got %#x\n", E_INVALIDARG, hr); + ok(extension == NULL, "Expect extension null, got %p\n", extension); + + /* Crashed on Windows */ + if (0) + { + hr = pPathCchFindExtension(pathW, PATHCCH_MAX_CCH, NULL); + ok(hr == E_INVALIDARG, "expect result %#x, got %#x\n", E_INVALIDARG, hr); + } + + /* Path length check */ + /* size == PATHCCH_MAX_CCH + 1 */ + MultiByteToWideChar(CP_ACP, 0, "C:\\1.exe", -1, pathW, ARRAY_SIZE(pathW)); + hr = pPathCchFindExtension(pathW, PATHCCH_MAX_CCH + 1, &extension); + ok(hr == E_INVALIDARG, "expect result %#x, got %#x\n", E_INVALIDARG, hr); + + /* Size == path length + 1*/ + hr = pPathCchFindExtension(pathW, ARRAY_SIZE("C:\\1.exe"), &extension); + ok(hr == S_OK, "expect result %#x, got %#x\n", S_OK, hr); + ok(*extension == '.', "wrong extension value\n"); + + /* Size < path length + 1 */ + extension = (const WCHAR *)0xdeadbeef; + hr = pPathCchFindExtension(pathW, ARRAY_SIZE("C:\\1.exe") - 1, &extension); + ok(hr == E_INVALIDARG, "expect result %#x, got %#x\n", E_INVALIDARG, hr); + ok(extension == NULL, "Expect extension null, got %p\n", extension); + + /* Size == PATHCCH_MAX_CCH */ + hr = pPathCchFindExtension(pathW, PATHCCH_MAX_CCH, &extension); + ok(hr == S_OK, "expect result %#x, got %#x\n", S_OK, hr); + + /* Path length + 1 > PATHCCH_MAX_CCH */ + for (i = 0; i < ARRAY_SIZE(pathW) - 1; i++) pathW[i] = 'a'; + pathW[PATHCCH_MAX_CCH] = 0; + hr = pPathCchFindExtension(pathW, PATHCCH_MAX_CCH, &extension); + ok(hr == E_INVALIDARG, "expect result %#x, got %#x\n", E_INVALIDARG, hr); + + /* Path length + 1 == PATHCCH_MAX_CCH */ + pathW[PATHCCH_MAX_CCH - 1] = 0; + hr = pPathCchFindExtension(pathW, PATHCCH_MAX_CCH, &extension); + ok(hr == S_OK, "expect result %#x, got %#x\n", S_OK, hr); + + for (i = 0; i < ARRAY_SIZE(findextension_tests); i++) + { + const struct findextension_test *t = findextension_tests + i; + MultiByteToWideChar(CP_ACP, 0, t->path, -1, pathW, ARRAY_SIZE(pathW)); + hr = pPathCchFindExtension(pathW, PATHCCH_MAX_CCH, &extension); + ok(hr == S_OK, "path %s expect result %#x, got %#x\n", t->path, S_OK, hr); + if (SUCCEEDED(hr)) + ok(extension - pathW == t->extension_offset, "path %s expect extension offset %d, got %d\n", t->path, + t->extension_offset, extension - pathW); + } +} + START_TEST(path) { HMODULE hmod = LoadLibraryA("kernelbase.dll"); @@ -252,8 +372,10 @@ START_TEST(path) pPathCchCombineEx = (void *)GetProcAddress(hmod, "PathCchCombineEx"); pPathCchAddBackslash = (void *)GetProcAddress(hmod, "PathCchAddBackslash"); pPathCchAddBackslashEx = (void *)GetProcAddress(hmod, "PathCchAddBackslashEx"); + pPathCchFindExtension = (void *)GetProcAddress(hmod, "PathCchFindExtension"); test_PathCchCombineEx(); test_PathCchAddBackslash(); test_PathCchAddBackslashEx(); + test_PathCchFindExtension(); } diff --git a/include/pathcch.h b/include/pathcch.h index 2b2aed4c8f..6bb760ccdb 100644 --- a/include/pathcch.h +++ b/include/pathcch.h @@ -23,6 +23,9 @@ #define PATHCCH_DO_NOT_NORMALIZE_SEGMENTS 0x08 #define PATHCCH_ENSURE_IS_EXTENDED_LENGTH_PATH 0x10 +#define PATHCCH_MAX_CCH 0x8000 + HRESULT WINAPI PathCchAddBackslash(WCHAR *path, SIZE_T size); HRESULT WINAPI PathCchAddBackslashEx(WCHAR *path, SIZE_T size, WCHAR **end, SIZE_T *remaining); HRESULT WINAPI PathCchCombineEx(WCHAR *out, SIZE_T size, const WCHAR *path1, const WCHAR *path2, DWORD flags); +HRESULT WINAPI PathCchFindExtension(const WCHAR *path, SIZE_T size, const WCHAR **extension); -- 2.19.1
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Zhiyi Zhang