/* * NTDLL directory functions * * Copyright 1993 Erik Bos * Copyright 2003 Eric Pouech * Copyright 1996, 2004 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include #include #include #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_LINUX_IOCTL_H #include #endif #include #ifdef HAVE_UNISTD_H # include #endif #define NONAMELESSUNION #define NONAMELESSSTRUCT #include "windef.h" #include "winbase.h" #include "winnt.h" #include "winreg.h" #include "ntstatus.h" #include "winternl.h" #include "ntdll_misc.h" #include "wine/unicode.h" #include "wine/server.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(file); /* Define the VFAT ioctl to get both short and long file names */ /* FIXME: is it possible to get this to work on other systems? */ #ifdef linux /* We want the real kernel dirent structure, not the libc one */ typedef struct { long d_ino; long d_off; unsigned short d_reclen; char d_name[256]; } KERNEL_DIRENT; #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] ) #else /* linux */ #undef VFAT_IOCTL_READDIR_BOTH /* just in case... */ #endif /* linux */ #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1') #define INVALID_DOS_CHARS '*','?','<','>','|','"','+','=',',',';','[',']',' ','\345' #define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */ static int show_dir_symlinks = -1; static int show_dot_files; /* at some point we may want to allow Winelib apps to set this */ static const int is_case_sensitive = FALSE; static CRITICAL_SECTION chdir_section; static CRITICAL_SECTION_DEBUG critsect_debug = { 0, 0, &chdir_section, { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList }, 0, 0, { 0, (DWORD)(__FILE__ ": chdir_section") } }; static CRITICAL_SECTION chdir_section = { &critsect_debug, -1, 0, 0, 0, 0 }; /*********************************************************************** * init_options * * Initialize the show_dir_symlinks and show_dot_files options. */ static void init_options(void) { static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\', 'S','o','f','t','w','a','r','e','\\', 'W','i','n','e','\\','W','i','n','e','\\', 'C','o','n','f','i','g','\\','W','i','n','e',0}; static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0}; static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0}; char tmp[80]; HKEY hkey; DWORD dummy; OBJECT_ATTRIBUTES attr; UNICODE_STRING nameW; show_dot_files = show_dir_symlinks = 0; attr.Length = sizeof(attr); attr.RootDirectory = 0; attr.ObjectName = &nameW; attr.Attributes = 0; attr.SecurityDescriptor = NULL; attr.SecurityQualityOfService = NULL; RtlInitUnicodeString( &nameW, WineW ); if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) { RtlInitUnicodeString( &nameW, ShowDotFilesW ); if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy )) { WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data; show_dot_files = IS_OPTION_TRUE( str[0] ); } RtlInitUnicodeString( &nameW, ShowDirSymlinksW ); if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy )) { WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data; show_dir_symlinks = IS_OPTION_TRUE( str[0] ); } NtClose( hkey ); } } /*********************************************************************** * hash_short_file_name * * Transform a Unix file name into a hashed DOS name. If the name is a valid * DOS name, it is converted to upper-case; otherwise it is replaced by a * hashed version that fits in 8.3 format. * 'buffer' must be at least 12 characters long. * Returns length of short name in bytes; short name is NOT null-terminated. */ static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer ) { static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 }; static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345"; LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR); LPWSTR dst; unsigned short hash; int i; /* Compute the hash code of the file name */ /* If you know something about hash functions, feel free to */ /* insert a better algorithm here... */ if (!is_case_sensitive) { for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++) hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8); hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */ } else { for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++) hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8); hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */ } /* Find last dot for start of the extension */ for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p; /* Copy first 4 chars, replacing invalid chars with '_' */ for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++) { if (p == end || p == ext) break; *dst++ = strchrW( invalid_chars, *p ) ? '_' : toupperW(*p); } /* Pad to 5 chars with '~' */ while (i-- >= 0) *dst++ = '~'; /* Insert hash code converted to 3 ASCII chars */ *dst++ = hash_chars[(hash >> 10) & 0x1f]; *dst++ = hash_chars[(hash >> 5) & 0x1f]; *dst++ = hash_chars[hash & 0x1f]; /* Copy the first 3 chars of the extension (if any) */ if (ext) { *dst++ = '.'; for (i = 3, ext++; (i > 0) && ext < end; i--, ext++) *dst++ = strchrW( invalid_chars, *ext ) ? '_' : toupperW(*ext); } return dst - buffer; } /*********************************************************************** * match_filename * * Check a long file name against a mask. * * Tests (done in W95 DOS shell - case insensitive): * *.txt test1.test.txt * * *st1* test1.txt * * *.t??????.t* test1.ta.tornado.txt * * *tornado* test1.ta.tornado.txt * * t*t test1.ta.tornado.txt * * ?est* test1.txt * * ?est??? test1.txt - * *test1.txt* test1.txt * * h?l?o*t.dat hellothisisatest.dat * */ static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str ) { int mismatch; const WCHAR *name = name_str->Buffer; const WCHAR *mask = mask_str->Buffer; const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR); const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR); const WCHAR *lastjoker = NULL; const WCHAR *next_to_retry = NULL; TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str)); while (name < name_end && mask < mask_end) { switch(*mask) { case '*': mask++; while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */ if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */ lastjoker = mask; /* skip to the next match after the joker(s) */ if (is_case_sensitive) while (name < name_end && (*name != *mask)) name++; else while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++; next_to_retry = name; break; case '?': mask++; name++; break; default: if (is_case_sensitive) mismatch = (*mask != *name); else mismatch = (toupperW(*mask) != toupperW(*name)); if (!mismatch) { mask++; name++; if (mask == mask_end) { if (name == name_end) return TRUE; if (lastjoker) mask = lastjoker; } } else /* mismatch ! */ { if (lastjoker) /* we had an '*', so we can try unlimitedly */ { mask = lastjoker; /* this scan sequence was a mismatch, so restart * 1 char after the first char we checked last time */ next_to_retry++; name = next_to_retry; } else return FALSE; /* bad luck */ } break; } } while (mask < mask_end && ((*mask == '.') || (*mask == '*'))) mask++; /* Ignore trailing '.' or '*' in mask */ return (name == name_end && mask == mask_end); } /*********************************************************************** * append_entry * * helper for NtQueryDirectoryFile */ static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length, const char *long_name, const char *short_name, const UNICODE_STRING *mask ) { FILE_BOTH_DIR_INFORMATION *info; int i, long_len, short_len, total_len; struct stat st; WCHAR long_nameW[MAX_DIR_ENTRY_LEN]; WCHAR short_nameW[12]; UNICODE_STRING str; long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN ); if (long_len == -1) return NULL; str.Buffer = long_nameW; str.Length = long_len * sizeof(WCHAR); str.MaximumLength = sizeof(long_nameW); if (short_name) { short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name), short_nameW, sizeof(short_nameW) / sizeof(WCHAR) ); if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR); } else /* generate a short name if necessary */ { BOOLEAN spaces; short_len = 0; if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces) short_len = hash_short_file_name( &str, short_nameW ); } TRACE( "long %s short %s mask %s\n", debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) ); if (mask && !match_filename( &str, mask )) { if (!short_len) return NULL; /* no short name to match */ str.Buffer = short_nameW; str.Length = short_len * sizeof(WCHAR); str.MaximumLength = sizeof(short_nameW); if (!match_filename( &str, mask )) return NULL; } total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3; info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos); if (*pos + total_len > max_length) total_len = max_length - *pos; if (lstat( long_name, &st ) == -1) return NULL; if (S_ISLNK( st.st_mode )) { if (stat( long_name, &st ) == -1) return NULL; if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL; } info->NextEntryOffset = total_len; info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */ RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime ); RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime ); RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime ); RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime ); if (S_ISDIR(st.st_mode)) { info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0; info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY; } else { info->EndOfFile.QuadPart = st.st_size; info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512; info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE; } if (!(st.st_mode & S_IWUSR)) info->FileAttributes |= FILE_ATTRIBUTE_READONLY; if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2])) info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN; info->EaSize = 0; /* FIXME */ info->ShortNameLength = short_len * sizeof(WCHAR); for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]); info->FileNameLength = long_len * sizeof(WCHAR); memcpy( info->FileName, long_nameW, min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) )); *pos += total_len; return info; } /****************************************************************************** * NtQueryDirectoryFile [NTDLL.@] * ZwQueryDirectoryFile [NTDLL.@] */ NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc_routine, PVOID apc_context, PIO_STATUS_BLOCK io, PVOID buffer, ULONG length, FILE_INFORMATION_CLASS info_class, BOOLEAN single_entry, PUNICODE_STRING mask, BOOLEAN restart_scan ) { int cwd, fd; FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL; static const int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR); TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n", handle, event, apc_routine, apc_context, io, buffer, length, info_class, single_entry, debugstr_us(mask), restart_scan); if (length < sizeof(*info)) return STATUS_INFO_LENGTH_MISMATCH; if (event || apc_routine) { FIXME( "Unsupported yet option\n" ); return io->u.Status = STATUS_NOT_IMPLEMENTED; } if (info_class != FileBothDirectoryInformation) { FIXME( "Unsupported file info class %d\n", info_class ); return io->u.Status = STATUS_NOT_IMPLEMENTED; } if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL, NULL )) != STATUS_SUCCESS) return io->u.Status; io->Information = 0; RtlEnterCriticalSection( &chdir_section ); if (show_dir_symlinks == -1) init_options(); if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1) { off_t old_pos = 0; #ifdef VFAT_IOCTL_READDIR_BOTH KERNEL_DIRENT de[2]; io->u.Status = STATUS_SUCCESS; /* Check if the VFAT ioctl is supported on this directory */ if (restart_scan) lseek( fd, 0, SEEK_SET ); else old_pos = lseek( fd, 0, SEEK_CUR ); if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1) { if (length < max_dir_info_size) /* we may have to return a partial entry here */ { for (;;) { if (!de[0].d_reclen) break; if (de[1].d_name[0]) info = append_entry( buffer, &io->Information, length, de[1].d_name, de[0].d_name, mask ); else info = append_entry( buffer, &io->Information, length, de[0].d_name, NULL, mask ); if (info) { last_info = info; if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length) { io->u.Status = STATUS_BUFFER_OVERFLOW; lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */ } break; } old_pos = lseek( fd, 0, SEEK_CUR ); if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break; } } else /* we'll only return full entries, no need to worry about overflow */ { for (;;) { if (!de[0].d_reclen) break; if (de[1].d_name[0]) info = append_entry( buffer, &io->Information, length, de[1].d_name, de[0].d_name, mask ); else info = append_entry( buffer, &io->Information, length, de[0].d_name, NULL, mask ); if (info) { last_info = info; if (single_entry) break; /* check if we still have enough space for the largest possible entry */ if (io->Information + max_dir_info_size > length) break; } if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break; } } } else if (errno != ENOENT) #endif /* VFAT_IOCTL_READDIR_BOTH */ { DIR *dir; struct dirent *de; if (!(dir = opendir( "." ))) { io->u.Status = FILE_GetNtStatus(); goto done; } if (!restart_scan) { old_pos = lseek( fd, 0, SEEK_CUR ); seekdir( dir, old_pos ); } io->u.Status = STATUS_SUCCESS; if (length < max_dir_info_size) /* we may have to return a partial entry here */ { while ((de = readdir( dir ))) { info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask ); if (info) { last_info = info; if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length) io->u.Status = STATUS_BUFFER_OVERFLOW; else old_pos = telldir( dir ); break; } old_pos = telldir( dir ); } } else /* we'll only return full entries, no need to worry about overflow */ { while ((de = readdir( dir ))) { info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask ); if (info) { last_info = info; if (single_entry) break; /* check if we still have enough space for the largest possible entry */ if (io->Information + max_dir_info_size > length) break; } } old_pos = telldir( dir ); } lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */ closedir( dir ); } if (last_info) last_info->NextEntryOffset = 0; else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES; done: if (fchdir( cwd ) == -1) chdir( "/" ); } else io->u.Status = FILE_GetNtStatus(); RtlLeaveCriticalSection( &chdir_section ); wine_server_release_fd( handle, fd ); if (cwd != -1) close( cwd ); TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information ); return io->u.Status; }