diff options
Diffstat (limited to 'source3/smbd')
| -rw-r--r-- | source3/smbd/mangle_hash.c | 86 |
1 files changed, 36 insertions, 50 deletions
diff --git a/source3/smbd/mangle_hash.c b/source3/smbd/mangle_hash.c index 98ba775daf..fee386d6db 100644 --- a/source3/smbd/mangle_hash.c +++ b/source3/smbd/mangle_hash.c @@ -20,36 +20,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* -------------------------------------------------------------------------- ** - * Notable problems... - * - * March/April 1998 CRH - * - Many of the functions in this module overwrite string buffers passed to - * them. This causes a variety of problems and is, generally speaking, - * dangerous and scarry. See the kludge notes in name_map() - * below. - * - It seems that something is calling name_map() twice. The - * first call is probably some sort of test. Names which contain - * illegal characters are being doubly mangled. I'm not sure, but - * I'm guessing the problem is in server.c. - * - * -------------------------------------------------------------------------- ** - */ - -/* -------------------------------------------------------------------------- ** - * History... - * - * March/April 1998 CRH - * Updated a bit. Rewrote is_mangled() to be a bit more selective. - * Rewrote the mangled name cache. Added comments here and there. - * &c. - * -------------------------------------------------------------------------- ** - */ - #include "includes.h" - /* -------------------------------------------------------------------------- ** * Other stuff... * @@ -67,24 +39,17 @@ * * chartest - array 0..255. The index range is the set of all possible * values of a byte. For each byte value, the content is a - * two nibble pair. See BASECHAR_MASK and ILLEGAL_MASK, - * below. + * two nibble pair. See BASECHAR_MASK below. * * ct_initialized - False until the chartest array has been initialized via * a call to init_chartest(). * * BASECHAR_MASK - Masks the upper nibble of a one-byte value. * - * ILLEGAL_MASK - Masks the lower nibble of a one-byte value. - * * isbasecahr() - Given a character, check the chartest array to see * if that character is in the basechars set. This is * faster than using strchr_m(). * - * isillegal() - Given a character, check the chartest array to see - * if that character is in the illegal characters set. - * This is faster than using strchr_m(). - * */ char magic_char = '~'; @@ -97,9 +62,7 @@ static BOOL ct_initialized = False; #define mangle(V) ((char)(basechars[(V) % MANGLE_BASE])) #define BASECHAR_MASK 0xf0 -#define ILLEGAL_MASK 0x0f #define isbasechar(C) ( (chartest[ ((C) & 0xff) ]) & BASECHAR_MASK ) -#define isillegal(C) ( (chartest[ ((C) & 0xff) ]) & ILLEGAL_MASK ) static TDB_CONTEXT *tdb_mangled_cache; @@ -107,17 +70,38 @@ static TDB_CONTEXT *tdb_mangled_cache; static NTSTATUS has_valid_83_chars(const smb_ucs2_t *s, BOOL allow_wildcards) { - if (!s || !*s) + if (!*s) { return NT_STATUS_INVALID_PARAMETER; + } - /* CHECK: this should not be necessary if the ms wild chars - are not valid in valid.dat --- simo */ - if (!allow_wildcards && ms_has_wild_w(s)) + if (!allow_wildcards && ms_has_wild_w(s)) { return NT_STATUS_UNSUCCESSFUL; + } while (*s) { - if(!isvalid83_w(*s)) + if(!isvalid83_w(*s)) { return NT_STATUS_UNSUCCESSFUL; + } + s++; + } + + return NT_STATUS_OK; +} + +static NTSTATUS has_illegal_chars(const smb_ucs2_t *s, BOOL allow_wildcards) +{ + if (!allow_wildcards && ms_has_wild_w(s)) { + return NT_STATUS_UNSUCCESSFUL; + } + + while (*s) { + switch(*s) { + case UCS2_CHAR('\\'): + case UCS2_CHAR('/'): + case UCS2_CHAR('|'): + case UCS2_CHAR(':'): + return NT_STATUS_UNSUCCESSFUL; + } s++; } @@ -156,10 +140,11 @@ static NTSTATUS mangle_get_prefix(const smb_ucs2_t *ucs2_string, smb_ucs2_t **pr /* ************************************************************************** ** * Return NT_STATUS_UNSUCCESSFUL if a name is a special msdos reserved name. + * or contains illegal characters. * * Input: fname - String containing the name to be tested. * - * Output: NT_STATUS_UNSUCCESSFUL, if the name matches one of the list of reserved names. + * Output: NT_STATUS_UNSUCCESSFUL, if the condition above is true. * * Notes: This is a static function called by is_8_3(), below. * @@ -188,6 +173,10 @@ static NTSTATUS is_valid_name(const smb_ucs2_t *fname, BOOL allow_wildcards, BOO return ret; } + ret = has_illegal_chars(fname, allow_wildcards); + if (!NT_STATUS_IS_OK(ret)) + return ret; + str = strdup_w(fname); p = strchr_w(str, UCS2_CHAR('.')); if (p && p[1] == UCS2_CHAR(0)) { @@ -333,16 +322,13 @@ done: */ static void init_chartest( void ) { - const char *illegalchars = "*\\/?<>|\":"; const unsigned char *s; memset( (char *)chartest, '\0', 256 ); - for( s = (const unsigned char *)illegalchars; *s; s++ ) - chartest[*s] = ILLEGAL_MASK; - - for( s = (const unsigned char *)basechars; *s; s++ ) + for( s = (const unsigned char *)basechars; *s; s++ ) { chartest[*s] |= BASECHAR_MASK; + } ct_initialized = True; } @@ -566,7 +552,7 @@ static void to_8_3(char *s, int default_case) p = s; while( *p && baselen < 5 ) { - if (*p != '.') { + if (isbasechar(*p)) { base[baselen++] = p[0]; } p++; |