| /* |
| * Ntdll path functions |
| * |
| * Copyright 2002, 2003, 2004 Alexandre Julliard |
| * Copyright 2003 Eric Pouech |
| * |
| * 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 <stdarg.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winreg.h" |
| #include "winternl.h" |
| #include "winioctl.h" |
| #include "wine/unicode.h" |
| #include "wine/debug.h" |
| #include "wine/library.h" |
| #include "ntdll_misc.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(file); |
| |
| static const WCHAR DeviceRootW[] = {'\\','\\','.','\\',0}; |
| static const WCHAR NTDosPrefixW[] = {'\\','?','?','\\',0}; |
| static const WCHAR UncPfxW[] = {'U','N','C','\\',0}; |
| |
| #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/') |
| |
| #define MAX_DOS_DRIVES 26 |
| |
| struct drive_info |
| { |
| dev_t dev; |
| ino_t ino; |
| }; |
| |
| /*********************************************************************** |
| * get_drives_info |
| * |
| * Retrieve device/inode number for all the drives. Helper for find_drive_root. |
| */ |
| static inline int get_drives_info( struct drive_info info[MAX_DOS_DRIVES] ) |
| { |
| const char *config_dir = wine_get_config_dir(); |
| char *buffer, *p; |
| struct stat st; |
| int i, ret; |
| |
| buffer = RtlAllocateHeap( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") ); |
| if (!buffer) return 0; |
| strcpy( buffer, config_dir ); |
| strcat( buffer, "/dosdevices/a:" ); |
| p = buffer + strlen(buffer) - 2; |
| |
| for (i = ret = 0; i < MAX_DOS_DRIVES; i++) |
| { |
| *p = 'a' + i; |
| if (!stat( buffer, &st )) |
| { |
| info[i].dev = st.st_dev; |
| info[i].ino = st.st_ino; |
| ret++; |
| } |
| else |
| { |
| info[i].dev = 0; |
| info[i].ino = 0; |
| } |
| } |
| RtlFreeHeap( GetProcessHeap(), 0, buffer ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * remove_last_component |
| * |
| * Remove the last component of the path. Helper for find_drive_root. |
| */ |
| static inline int remove_last_component( const WCHAR *path, int len ) |
| { |
| int level = 0; |
| |
| while (level < 1) |
| { |
| /* find start of the last path component */ |
| int prev = len; |
| if (prev <= 1) break; /* reached root */ |
| while (prev > 1 && !IS_SEPARATOR(path[prev - 1])) prev--; |
| /* does removing it take us up a level? */ |
| if (len - prev != 1 || path[prev] != '.') /* not '.' */ |
| { |
| if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */ |
| level--; |
| else |
| level++; |
| } |
| /* strip off trailing slashes */ |
| while (prev > 1 && IS_SEPARATOR(path[prev - 1])) prev--; |
| len = prev; |
| } |
| return len; |
| } |
| |
| |
| /*********************************************************************** |
| * find_drive_root |
| * |
| * Find a drive for which the root matches the beginning of the given path. |
| * This can be used to translate a Unix path into a drive + DOS path. |
| * Return value is the drive, or -1 on error. On success, ppath is modified |
| * to point to the beginning of the DOS path. |
| */ |
| static int find_drive_root( LPCWSTR *ppath ) |
| { |
| /* Starting with the full path, check if the device and inode match any of |
| * the wine 'drives'. If not then remove the last path component and try |
| * again. If the last component was a '..' then skip a normal component |
| * since it's a directory that's ascended back out of. |
| */ |
| int drive, lenA, lenW; |
| char *buffer, *p; |
| const WCHAR *path = *ppath; |
| struct stat st; |
| struct drive_info info[MAX_DOS_DRIVES]; |
| |
| /* get device and inode of all drives */ |
| if (!get_drives_info( info )) return -1; |
| |
| /* strip off trailing slashes */ |
| lenW = strlenW(path); |
| while (lenW > 1 && IS_SEPARATOR(path[lenW - 1])) lenW--; |
| |
| /* convert path to Unix encoding */ |
| lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL ); |
| if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, lenA + 1 ))) return -1; |
| lenA = ntdll_wcstoumbs( 0, path, lenW, buffer, lenA, NULL, NULL ); |
| buffer[lenA] = 0; |
| for (p = buffer; *p; p++) if (*p == '\\') *p = '/'; |
| |
| for (;;) |
| { |
| if (!stat( buffer, &st ) && S_ISDIR( st.st_mode )) |
| { |
| /* Find the drive */ |
| for (drive = 0; drive < MAX_DOS_DRIVES; drive++) |
| { |
| if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino)) |
| { |
| if (lenW == 1) lenW = 0; /* preserve root slash in returned path */ |
| TRACE( "%s -> drive %c:, root=%s, name=%s\n", |
| debugstr_w(path), 'A' + drive, debugstr_a(buffer), debugstr_w(path + lenW)); |
| *ppath += lenW; |
| RtlFreeHeap( GetProcessHeap(), 0, buffer ); |
| return drive; |
| } |
| } |
| } |
| if (lenW <= 1) break; /* reached root */ |
| lenW = remove_last_component( path, lenW ); |
| |
| /* we only need the new length, buffer already contains the converted string */ |
| lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL ); |
| buffer[lenA] = 0; |
| } |
| RtlFreeHeap( GetProcessHeap(), 0, buffer ); |
| return -1; |
| } |
| |
| |
| /*********************************************************************** |
| * RtlDetermineDosPathNameType_U (NTDLL.@) |
| */ |
| DOS_PATHNAME_TYPE WINAPI RtlDetermineDosPathNameType_U( PCWSTR path ) |
| { |
| if (IS_SEPARATOR(path[0])) |
| { |
| if (!IS_SEPARATOR(path[1])) return ABSOLUTE_PATH; /* "/foo" */ |
| if (path[2] != '.') return UNC_PATH; /* "//foo" */ |
| if (IS_SEPARATOR(path[3])) return DEVICE_PATH; /* "//./foo" */ |
| if (path[3]) return UNC_PATH; /* "//.foo" */ |
| return UNC_DOT_PATH; /* "//." */ |
| } |
| else |
| { |
| if (!path[0] || path[1] != ':') return RELATIVE_PATH; /* "foo" */ |
| if (IS_SEPARATOR(path[2])) return ABSOLUTE_DRIVE_PATH; /* "c:/foo" */ |
| return RELATIVE_DRIVE_PATH; /* "c:foo" */ |
| } |
| } |
| |
| /*********************************************************************** |
| * RtlIsDosDeviceName_U (NTDLL.@) |
| * |
| * Check if the given DOS path contains a DOS device name. |
| * |
| * Returns the length of the device name in the low word and its |
| * position in the high word (both in bytes, not WCHARs), or 0 if no |
| * device name is found. |
| */ |
| ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name ) |
| { |
| static const WCHAR consoleW[] = {'\\','\\','.','\\','C','O','N',0}; |
| static const WCHAR auxW[3] = {'A','U','X'}; |
| static const WCHAR comW[3] = {'C','O','M'}; |
| static const WCHAR conW[3] = {'C','O','N'}; |
| static const WCHAR lptW[3] = {'L','P','T'}; |
| static const WCHAR nulW[3] = {'N','U','L'}; |
| static const WCHAR prnW[3] = {'P','R','N'}; |
| |
| const WCHAR *start, *end, *p; |
| |
| switch(RtlDetermineDosPathNameType_U( dos_name )) |
| { |
| case INVALID_PATH: |
| case UNC_PATH: |
| return 0; |
| case DEVICE_PATH: |
| if (!strcmpiW( dos_name, consoleW )) |
| return MAKELONG( sizeof(conW), 4 * sizeof(WCHAR) ); /* 4 is length of \\.\ prefix */ |
| return 0; |
| default: |
| break; |
| } |
| |
| end = dos_name + strlenW(dos_name) - 1; |
| if (end >= dos_name && *end == ':') end--; /* remove trailing ':' */ |
| |
| /* find start of file name */ |
| for (start = end; start >= dos_name; start--) |
| { |
| if (IS_SEPARATOR(start[0])) break; |
| /* check for ':' but ignore if before extension (for things like NUL:.txt) */ |
| if (start[0] == ':' && start[1] != '.') break; |
| } |
| start++; |
| |
| /* remove extension */ |
| if ((p = strchrW( start, '.' ))) |
| { |
| end = p - 1; |
| if (end >= dos_name && *end == ':') end--; /* remove trailing ':' before extension */ |
| } |
| else |
| { |
| /* no extension, remove trailing spaces */ |
| while (end >= dos_name && *end == ' ') end--; |
| } |
| |
| /* now we have a potential device name between start and end, check it */ |
| switch(end - start + 1) |
| { |
| case 3: |
| if (strncmpiW( start, auxW, 3 ) && |
| strncmpiW( start, conW, 3 ) && |
| strncmpiW( start, nulW, 3 ) && |
| strncmpiW( start, prnW, 3 )) break; |
| return MAKELONG( 3 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) ); |
| case 4: |
| if (strncmpiW( start, comW, 3 ) && strncmpiW( start, lptW, 3 )) break; |
| if (*end <= '0' || *end > '9') break; |
| return MAKELONG( 4 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) ); |
| default: /* can't match anything */ |
| break; |
| } |
| return 0; |
| } |
| |
| |
| /************************************************************************** |
| * RtlDosPathNameToNtPathName_U [NTDLL.@] |
| * |
| * dos_path: a DOS path name (fully qualified or not) |
| * ntpath: pointer to a UNICODE_STRING to hold the converted |
| * path name |
| * file_part:will point (in ntpath) to the file part in the path |
| * cd: directory reference (optional) |
| * |
| * FIXME: |
| * + fill the cd structure |
| */ |
| BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path, |
| PUNICODE_STRING ntpath, |
| PWSTR* file_part, |
| CURDIR* cd) |
| { |
| static const WCHAR LongFileNamePfxW[4] = {'\\','\\','?','\\'}; |
| ULONG sz, offset; |
| WCHAR local[MAX_PATH]; |
| LPWSTR ptr; |
| |
| TRACE("(%s,%p,%p,%p)\n", |
| debugstr_w(dos_path), ntpath, file_part, cd); |
| |
| if (cd) |
| { |
| FIXME("Unsupported parameter\n"); |
| memset(cd, 0, sizeof(*cd)); |
| } |
| |
| if (!dos_path || !*dos_path) return FALSE; |
| |
| if (!strncmpW(dos_path, LongFileNamePfxW, 4)) |
| { |
| ntpath->Length = strlenW(dos_path) * sizeof(WCHAR); |
| ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR); |
| ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength); |
| if (!ntpath->Buffer) return FALSE; |
| memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength ); |
| ntpath->Buffer[1] = '?'; /* change \\?\ to \??\ */ |
| return TRUE; |
| } |
| |
| ptr = local; |
| sz = RtlGetFullPathName_U(dos_path, sizeof(local), ptr, file_part); |
| if (sz == 0) return FALSE; |
| if (sz > sizeof(local)) |
| { |
| if (!(ptr = RtlAllocateHeap(GetProcessHeap(), 0, sz))) return FALSE; |
| sz = RtlGetFullPathName_U(dos_path, sz, ptr, file_part); |
| } |
| |
| ntpath->MaximumLength = sz + (4 /* unc\ */ + 4 /* \??\ */) * sizeof(WCHAR); |
| ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength); |
| if (!ntpath->Buffer) |
| { |
| if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr); |
| return FALSE; |
| } |
| |
| strcpyW(ntpath->Buffer, NTDosPrefixW); |
| switch (RtlDetermineDosPathNameType_U(ptr)) |
| { |
| case UNC_PATH: /* \\foo */ |
| offset = 2; |
| strcatW(ntpath->Buffer, UncPfxW); |
| break; |
| case DEVICE_PATH: /* \\.\foo */ |
| offset = 4; |
| break; |
| default: |
| offset = 0; |
| break; |
| } |
| |
| strcatW(ntpath->Buffer, ptr + offset); |
| ntpath->Length = strlenW(ntpath->Buffer) * sizeof(WCHAR); |
| |
| if (file_part && *file_part) |
| *file_part = ntpath->Buffer + ntpath->Length / sizeof(WCHAR) - strlenW(*file_part); |
| |
| /* FIXME: cd filling */ |
| |
| if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr); |
| return TRUE; |
| } |
| |
| /****************************************************************** |
| * RtlDosSearchPath_U |
| * |
| * Searchs a file of name 'name' into a ';' separated list of paths |
| * (stored in paths) |
| * Doesn't seem to search elsewhere than the paths list |
| * Stores the result in buffer (file_part will point to the position |
| * of the file name in the buffer) |
| * FIXME: |
| * - how long shall the paths be ??? (MAX_PATH or larger with \\?\ constructs ???) |
| */ |
| ULONG WINAPI RtlDosSearchPath_U(LPCWSTR paths, LPCWSTR search, LPCWSTR ext, |
| ULONG buffer_size, LPWSTR buffer, |
| LPWSTR* file_part) |
| { |
| DOS_PATHNAME_TYPE type = RtlDetermineDosPathNameType_U(search); |
| ULONG len = 0; |
| |
| if (type == RELATIVE_PATH) |
| { |
| ULONG allocated = 0, needed, filelen; |
| WCHAR *name = NULL; |
| |
| filelen = 1 /* for \ */ + strlenW(search) + 1 /* \0 */; |
| |
| /* Windows only checks for '.' without worrying about path components */ |
| if (strchrW( search, '.' )) ext = NULL; |
| if (ext != NULL) filelen += strlenW(ext); |
| |
| while (*paths) |
| { |
| LPCWSTR ptr; |
| |
| for (needed = 0, ptr = paths; *ptr != 0 && *ptr++ != ';'; needed++); |
| if (needed + filelen > allocated) |
| { |
| if (!name) name = RtlAllocateHeap(GetProcessHeap(), 0, |
| (needed + filelen) * sizeof(WCHAR)); |
| else |
| { |
| WCHAR *newname = RtlReAllocateHeap(GetProcessHeap(), 0, name, |
| (needed + filelen) * sizeof(WCHAR)); |
| if (!newname) RtlFreeHeap(GetProcessHeap(), 0, name); |
| name = newname; |
| } |
| if (!name) return 0; |
| allocated = needed + filelen; |
| } |
| memmove(name, paths, needed * sizeof(WCHAR)); |
| /* append '\\' if none is present */ |
| if (needed > 0 && name[needed - 1] != '\\') name[needed++] = '\\'; |
| strcpyW(&name[needed], search); |
| if (ext) strcatW(&name[needed], ext); |
| if (RtlDoesFileExists_U(name)) |
| { |
| len = RtlGetFullPathName_U(name, buffer_size, buffer, file_part); |
| break; |
| } |
| paths = ptr; |
| } |
| RtlFreeHeap(GetProcessHeap(), 0, name); |
| } |
| else if (RtlDoesFileExists_U(search)) |
| { |
| len = RtlGetFullPathName_U(search, buffer_size, buffer, file_part); |
| } |
| |
| return len; |
| } |
| |
| |
| /****************************************************************** |
| * collapse_path |
| * |
| * Helper for RtlGetFullPathName_U. |
| * Get rid of . and .. components in the path. |
| */ |
| static inline void collapse_path( WCHAR *path, UINT mark ) |
| { |
| WCHAR *p, *next; |
| |
| /* convert every / into a \ */ |
| for (p = path; *p; p++) if (*p == '/') *p = '\\'; |
| |
| /* collapse duplicate backslashes */ |
| next = path + max( 1, mark ); |
| for (p = next; *p; p++) if (*p != '\\' || next[-1] != '\\') *next++ = *p; |
| *next = 0; |
| |
| p = path + mark; |
| while (*p) |
| { |
| if (*p == '.') |
| { |
| switch(p[1]) |
| { |
| case '\\': /* .\ component */ |
| next = p + 2; |
| memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) ); |
| continue; |
| case 0: /* final . */ |
| if (p > path + mark) p--; |
| *p = 0; |
| continue; |
| case '.': |
| if (p[2] == '\\') /* ..\ component */ |
| { |
| next = p + 3; |
| if (p > path + mark) |
| { |
| p--; |
| while (p > path + mark && p[-1] != '\\') p--; |
| } |
| memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) ); |
| continue; |
| } |
| else if (!p[2]) /* final .. */ |
| { |
| if (p > path + mark) |
| { |
| p--; |
| while (p > path + mark && p[-1] != '\\') p--; |
| if (p > path + mark) p--; |
| } |
| *p = 0; |
| continue; |
| } |
| break; |
| } |
| } |
| /* skip to the next component */ |
| while (*p && *p != '\\') p++; |
| if (*p == '\\') p++; |
| } |
| |
| /* remove trailing spaces and dots (yes, Windows really does that, don't ask) */ |
| while (p > path + mark && (p[-1] == ' ' || p[-1] == '.')) p--; |
| *p = 0; |
| } |
| |
| |
| /****************************************************************** |
| * skip_unc_prefix |
| * |
| * Skip the \\share\dir\ part of a file name. Helper for RtlGetFullPathName_U. |
| */ |
| static const WCHAR *skip_unc_prefix( const WCHAR *ptr ) |
| { |
| ptr += 2; |
| while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */ |
| while (IS_SEPARATOR(*ptr)) ptr++; |
| while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */ |
| while (IS_SEPARATOR(*ptr)) ptr++; |
| return ptr; |
| } |
| |
| |
| /****************************************************************** |
| * get_full_path_helper |
| * |
| * Helper for RtlGetFullPathName_U |
| * Note: name and buffer are allowed to point to the same memory spot |
| */ |
| static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size) |
| { |
| ULONG reqsize = 0, mark = 0, dep = 0, deplen; |
| DOS_PATHNAME_TYPE type; |
| LPWSTR ins_str = NULL; |
| LPCWSTR ptr; |
| const UNICODE_STRING* cd; |
| WCHAR tmp[4]; |
| |
| /* return error if name only consists of spaces */ |
| for (ptr = name; *ptr; ptr++) if (*ptr != ' ') break; |
| if (!*ptr) return 0; |
| |
| RtlAcquirePebLock(); |
| |
| if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */ |
| cd = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath; |
| else |
| cd = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath; |
| |
| switch (type = RtlDetermineDosPathNameType_U(name)) |
| { |
| case UNC_PATH: /* \\foo */ |
| ptr = skip_unc_prefix( name ); |
| mark = (ptr - name); |
| break; |
| |
| case DEVICE_PATH: /* \\.\foo */ |
| mark = 4; |
| break; |
| |
| case ABSOLUTE_DRIVE_PATH: /* c:\foo */ |
| reqsize = sizeof(WCHAR); |
| tmp[0] = toupperW(name[0]); |
| ins_str = tmp; |
| dep = 1; |
| mark = 3; |
| break; |
| |
| case RELATIVE_DRIVE_PATH: /* c:foo */ |
| dep = 2; |
| if (toupperW(name[0]) != toupperW(cd->Buffer[0]) || cd->Buffer[1] != ':') |
| { |
| UNICODE_STRING var, val; |
| |
| tmp[0] = '='; |
| tmp[1] = name[0]; |
| tmp[2] = ':'; |
| tmp[3] = '\0'; |
| var.Length = 3 * sizeof(WCHAR); |
| var.MaximumLength = 4 * sizeof(WCHAR); |
| var.Buffer = tmp; |
| val.Length = 0; |
| val.MaximumLength = size; |
| val.Buffer = RtlAllocateHeap(GetProcessHeap(), 0, size); |
| |
| switch (RtlQueryEnvironmentVariable_U(NULL, &var, &val)) |
| { |
| case STATUS_SUCCESS: |
| /* FIXME: Win2k seems to check that the environment variable actually points |
| * to an existing directory. If not, root of the drive is used |
| * (this seems also to be the only spot in RtlGetFullPathName that the |
| * existence of a part of a path is checked) |
| */ |
| /* fall thru */ |
| case STATUS_BUFFER_TOO_SMALL: |
| reqsize = val.Length + sizeof(WCHAR); /* append trailing '\\' */ |
| val.Buffer[val.Length / sizeof(WCHAR)] = '\\'; |
| ins_str = val.Buffer; |
| break; |
| case STATUS_VARIABLE_NOT_FOUND: |
| reqsize = 3 * sizeof(WCHAR); |
| tmp[0] = name[0]; |
| tmp[1] = ':'; |
| tmp[2] = '\\'; |
| ins_str = tmp; |
| break; |
| default: |
| ERR("Unsupported status code\n"); |
| break; |
| } |
| mark = 3; |
| break; |
| } |
| /* fall through */ |
| |
| case RELATIVE_PATH: /* foo */ |
| reqsize = cd->Length; |
| ins_str = cd->Buffer; |
| if (cd->Buffer[1] != ':') |
| { |
| ptr = skip_unc_prefix( cd->Buffer ); |
| mark = ptr - cd->Buffer; |
| } |
| else mark = 3; |
| break; |
| |
| case ABSOLUTE_PATH: /* \xxx */ |
| if (name[0] == '/') /* may be a Unix path */ |
| { |
| const WCHAR *ptr = name; |
| int drive = find_drive_root( &ptr ); |
| if (drive != -1) |
| { |
| reqsize = 3 * sizeof(WCHAR); |
| tmp[0] = 'A' + drive; |
| tmp[1] = ':'; |
| tmp[2] = '\\'; |
| ins_str = tmp; |
| mark = 3; |
| dep = ptr - name; |
| break; |
| } |
| } |
| if (cd->Buffer[1] == ':') |
| { |
| reqsize = 2 * sizeof(WCHAR); |
| tmp[0] = cd->Buffer[0]; |
| tmp[1] = ':'; |
| ins_str = tmp; |
| mark = 3; |
| } |
| else |
| { |
| ptr = skip_unc_prefix( cd->Buffer ); |
| reqsize = (ptr - cd->Buffer) * sizeof(WCHAR); |
| mark = reqsize / sizeof(WCHAR); |
| ins_str = cd->Buffer; |
| } |
| break; |
| |
| case UNC_DOT_PATH: /* \\. */ |
| reqsize = 4 * sizeof(WCHAR); |
| dep = 3; |
| tmp[0] = '\\'; |
| tmp[1] = '\\'; |
| tmp[2] = '.'; |
| tmp[3] = '\\'; |
| ins_str = tmp; |
| mark = 4; |
| break; |
| |
| case INVALID_PATH: |
| goto done; |
| } |
| |
| /* enough space ? */ |
| deplen = strlenW(name + dep) * sizeof(WCHAR); |
| if (reqsize + deplen + sizeof(WCHAR) > size) |
| { |
| /* not enough space, return need size (including terminating '\0') */ |
| reqsize += deplen + sizeof(WCHAR); |
| goto done; |
| } |
| |
| memmove(buffer + reqsize / sizeof(WCHAR), name + dep, deplen + sizeof(WCHAR)); |
| if (reqsize) memcpy(buffer, ins_str, reqsize); |
| reqsize += deplen; |
| |
| if (ins_str && ins_str != tmp && ins_str != cd->Buffer) |
| RtlFreeHeap(GetProcessHeap(), 0, ins_str); |
| |
| collapse_path( buffer, mark ); |
| reqsize = strlenW(buffer) * sizeof(WCHAR); |
| |
| done: |
| RtlReleasePebLock(); |
| return reqsize; |
| } |
| |
| /****************************************************************** |
| * RtlGetFullPathName_U (NTDLL.@) |
| * |
| * Returns the number of bytes written to buffer (not including the |
| * terminating NULL) if the function succeeds, or the required number of bytes |
| * (including the terminating NULL) if the buffer is too small. |
| * |
| * file_part will point to the filename part inside buffer (except if we use |
| * DOS device name, in which case file_in_buf is NULL) |
| * |
| */ |
| DWORD WINAPI RtlGetFullPathName_U(const WCHAR* name, ULONG size, WCHAR* buffer, |
| WCHAR** file_part) |
| { |
| WCHAR* ptr; |
| DWORD dosdev; |
| DWORD reqsize; |
| |
| TRACE("(%s %lu %p %p)\n", debugstr_w(name), size, buffer, file_part); |
| |
| if (!name || !*name) return 0; |
| |
| if (file_part) *file_part = NULL; |
| |
| /* check for DOS device name */ |
| dosdev = RtlIsDosDeviceName_U(name); |
| if (dosdev) |
| { |
| DWORD offset = HIWORD(dosdev) / sizeof(WCHAR); /* get it in WCHARs, not bytes */ |
| DWORD sz = LOWORD(dosdev); /* in bytes */ |
| |
| if (8 + sz + 2 > size) return sz + 10; |
| strcpyW(buffer, DeviceRootW); |
| memmove(buffer + 4, name + offset, sz); |
| buffer[4 + sz / sizeof(WCHAR)] = '\0'; |
| /* file_part isn't set in this case */ |
| return sz + 8; |
| } |
| |
| reqsize = get_full_path_helper(name, buffer, size); |
| if (!reqsize) return 0; |
| if (reqsize > size) |
| { |
| LPWSTR tmp = RtlAllocateHeap(GetProcessHeap(), 0, reqsize); |
| reqsize = get_full_path_helper(name, tmp, reqsize); |
| if (reqsize > size) /* it may have worked the second time */ |
| { |
| RtlFreeHeap(GetProcessHeap(), 0, tmp); |
| return reqsize + sizeof(WCHAR); |
| } |
| memcpy( buffer, tmp, reqsize + sizeof(WCHAR) ); |
| RtlFreeHeap(GetProcessHeap(), 0, tmp); |
| } |
| |
| /* find file part */ |
| if (file_part && (ptr = strrchrW(buffer, '\\')) != NULL && ptr >= buffer + 2 && *++ptr) |
| *file_part = ptr; |
| return reqsize; |
| } |
| |
| /************************************************************************* |
| * RtlGetLongestNtPathLength [NTDLL.@] |
| * |
| * Get the longest allowed path length |
| * |
| * PARAMS |
| * None. |
| * |
| * RETURNS |
| * The longest allowed path length (277 characters under Win2k). |
| */ |
| DWORD WINAPI RtlGetLongestNtPathLength(void) |
| { |
| return 277; |
| } |
| |
| /****************************************************************** |
| * RtlIsNameLegalDOS8Dot3 (NTDLL.@) |
| * |
| * Returns TRUE iff unicode is a valid DOS (8+3) name. |
| * If the name is valid, oem gets filled with the corresponding OEM string |
| * spaces is set to TRUE if unicode contains spaces |
| */ |
| BOOLEAN WINAPI RtlIsNameLegalDOS8Dot3( const UNICODE_STRING *unicode, |
| OEM_STRING *oem, BOOLEAN *spaces ) |
| { |
| static const char* illegal = "*?<>|\"+=,;[]:/\\\345"; |
| int dot = -1; |
| int i; |
| char buffer[12]; |
| OEM_STRING oem_str; |
| BOOLEAN got_space = FALSE; |
| |
| if (!oem) |
| { |
| oem_str.Length = sizeof(buffer); |
| oem_str.MaximumLength = sizeof(buffer); |
| oem_str.Buffer = buffer; |
| oem = &oem_str; |
| } |
| if (RtlUpcaseUnicodeStringToCountedOemString( oem, unicode, FALSE ) != STATUS_SUCCESS) |
| return FALSE; |
| |
| if (oem->Length > 12) return FALSE; |
| |
| /* a starting . is invalid, except for . and .. */ |
| if (oem->Buffer[0] == '.') |
| { |
| if (oem->Length != 1 && (oem->Length != 2 || oem->Buffer[1] != '.')) return FALSE; |
| if (spaces) *spaces = FALSE; |
| return TRUE; |
| } |
| |
| for (i = 0; i < oem->Length; i++) |
| { |
| switch (oem->Buffer[i]) |
| { |
| case ' ': |
| /* leading/trailing spaces not allowed */ |
| if (!i || i == oem->Length-1 || oem->Buffer[i+1] == '.') return FALSE; |
| got_space = TRUE; |
| break; |
| case '.': |
| if (dot != -1) return FALSE; |
| dot = i; |
| break; |
| default: |
| if (strchr(illegal, oem->Buffer[i])) return FALSE; |
| break; |
| } |
| } |
| /* check file part is shorter than 8, extension shorter than 3 |
| * dot cannot be last in string |
| */ |
| if (dot == -1) |
| { |
| if (oem->Length > 8) return FALSE; |
| } |
| else |
| { |
| if (dot > 8 || (oem->Length - dot > 4) || dot == oem->Length - 1) return FALSE; |
| } |
| if (spaces) *spaces = got_space; |
| return TRUE; |
| } |
| |
| /****************************************************************** |
| * RtlGetCurrentDirectory_U (NTDLL.@) |
| * |
| */ |
| NTSTATUS WINAPI RtlGetCurrentDirectory_U(ULONG buflen, LPWSTR buf) |
| { |
| UNICODE_STRING* us; |
| ULONG len; |
| |
| TRACE("(%lu %p)\n", buflen, buf); |
| |
| RtlAcquirePebLock(); |
| |
| if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */ |
| us = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath; |
| else |
| us = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath; |
| |
| len = us->Length / sizeof(WCHAR); |
| if (us->Buffer[len - 1] == '\\' && us->Buffer[len - 2] != ':') |
| len--; |
| |
| if (buflen / sizeof(WCHAR) > len) |
| { |
| memcpy(buf, us->Buffer, len * sizeof(WCHAR)); |
| buf[len] = '\0'; |
| } |
| else |
| { |
| len++; |
| } |
| |
| RtlReleasePebLock(); |
| |
| return len * sizeof(WCHAR); |
| } |
| |
| /****************************************************************** |
| * RtlSetCurrentDirectory_U (NTDLL.@) |
| * |
| */ |
| NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir) |
| { |
| FILE_FS_DEVICE_INFORMATION device_info; |
| OBJECT_ATTRIBUTES attr; |
| UNICODE_STRING newdir; |
| IO_STATUS_BLOCK io; |
| CURDIR *curdir; |
| HANDLE handle; |
| NTSTATUS nts; |
| ULONG size; |
| PWSTR ptr; |
| |
| newdir.Buffer = NULL; |
| |
| RtlAcquirePebLock(); |
| |
| if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */ |
| curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir; |
| else |
| curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory; |
| |
| if (!RtlDosPathNameToNtPathName_U( dir->Buffer, &newdir, NULL, NULL )) |
| { |
| nts = STATUS_OBJECT_NAME_INVALID; |
| goto out; |
| } |
| |
| attr.Length = sizeof(attr); |
| attr.RootDirectory = 0; |
| attr.Attributes = OBJ_CASE_INSENSITIVE; |
| attr.ObjectName = &newdir; |
| attr.SecurityDescriptor = NULL; |
| attr.SecurityQualityOfService = NULL; |
| |
| nts = NtOpenFile( &handle, 0, &attr, &io, 0, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT ); |
| if (nts != STATUS_SUCCESS) goto out; |
| |
| /* don't keep the directory handle open on removable media */ |
| if (!NtQueryVolumeInformationFile( handle, &io, &device_info, |
| sizeof(device_info), FileFsDeviceInformation ) && |
| (device_info.Characteristics & FILE_REMOVABLE_MEDIA)) |
| { |
| NtClose( handle ); |
| handle = 0; |
| } |
| |
| if (curdir->Handle) NtClose( curdir->Handle ); |
| curdir->Handle = handle; |
| |
| /* append trailing \ if missing */ |
| size = newdir.Length / sizeof(WCHAR); |
| ptr = newdir.Buffer; |
| ptr += 4; /* skip \??\ prefix */ |
| size -= 4; |
| if (size && ptr[size - 1] != '\\') ptr[size++] = '\\'; |
| |
| memcpy( curdir->DosPath.Buffer, ptr, size * sizeof(WCHAR)); |
| curdir->DosPath.Buffer[size] = 0; |
| curdir->DosPath.Length = size * sizeof(WCHAR); |
| |
| TRACE( "curdir now %s %p\n", debugstr_w(curdir->DosPath.Buffer), curdir->Handle ); |
| |
| out: |
| RtlFreeUnicodeString( &newdir ); |
| RtlReleasePebLock(); |
| return nts; |
| } |
