Module: wine Branch: master Commit: c13a8f60bdef5b69f5db61f79efb7fd341a27303 URL: https://source.winehq.org/git/wine.git/?a=commit;h=c13a8f60bdef5b69f5db61f79... Author: Jeff Smith <whydoubt(a)gmail.com> Date: Thu Sep 19 12:04:30 2019 +0800 kernelbase: Fix PathAllocCanonicalize handling segments that contain dots. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=47766 Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com> Signed-off-by: Jeff Smith <whydoubt(a)gmail.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/kernelbase/path.c | 35 ++++++++++++++++++++--------------- 1 file changed, 20 insertions(+), 15 deletions(-) diff --git a/dlls/kernelbase/path.c b/dlls/kernelbase/path.c index 82708be544..e9182a764d 100644 --- a/dlls/kernelbase/path.c +++ b/dlls/kernelbase/path.c @@ -276,13 +276,8 @@ HRESULT WINAPI PathAllocCanonicalize(const WCHAR *path_in, DWORD flags, WCHAR ** continue; } - /* Keep the . if one of the following is true: - * 1. PATHCCH_DO_NOT_NORMALIZE_SEGMENTS - * 2. in form of a..b - */ - if (dst > buffer - && (((flags & PATHCCH_DO_NOT_NORMALIZE_SEGMENTS) && dst[-1] != '\\') - || (dst[-1] != '\\' && src[2] != '\\' && src[2]))) + /* Keep the .. if not surrounded by \ */ + if ((src[2] != '\\' && src[2]) || (dst > buffer && dst[-1] != '\\')) { *dst++ = *src++; *dst++ = *src++; @@ -313,14 +308,8 @@ HRESULT WINAPI PathAllocCanonicalize(const WCHAR *path_in, DWORD flags, WCHAR ** } else { - /* Keep the . if one of the following is true: - * 1. PATHCCH_DO_NOT_NORMALIZE_SEGMENTS - * 2. in form of a.b, which is used in domain names - * 3. *. - */ - if (dst > buffer - && ((flags & PATHCCH_DO_NOT_NORMALIZE_SEGMENTS && dst[-1] != '\\') - || (dst[-1] != '\\' && src[1] != '\\' && src[1]) || (dst[-1] == '*'))) + /* Keep the . if not surrounded by \ */ + if ((src[1] != '\\' && src[1]) || (dst > buffer && dst[-1] != '\\')) { *dst++ = *src++; continue; @@ -352,6 +341,22 @@ HRESULT WINAPI PathAllocCanonicalize(const WCHAR *path_in, DWORD flags, WCHAR ** /* End the path */ *dst = 0; + /* Strip multiple trailing . */ + if (!(flags & PATHCCH_DO_NOT_NORMALIZE_SEGMENTS)) + { + while (dst > buffer && dst[-1] == '.') + { + /* Keep a . after * */ + if (dst - 1 > buffer && dst[-2] == '*') + break; + /* If . follow a : at the second character, remove the . and add a \ */ + else if (dst - 1 > buffer && dst[-2] == ':' && dst - 2 == buffer + 1) + *--dst = '\\'; + else + *--dst = 0; + } + } + /* If result path is empty, fill in \ */ if (!*buffer) {