/*
try to find a 8.3 name in the cache, and if found then
- replace the string with the original long name.
+ replace the string with the original long name.
*/
-static BOOL check_cache(char *name, size_t maxlen, const struct share_params *p)
+static BOOL lookup_name_from_8_3(TALLOC_CTX *ctx,
+ const char *name,
+ char **pp_out, /* talloced on the given context. */
+ const struct share_params *p)
{
unsigned int hash, multiplier;
unsigned int i;
const char *prefix;
char extension[4];
+ *pp_out = NULL;
+
/* make sure that this is a mangled name from this cache */
if (!is_mangled(name, p)) {
- M_DEBUG(10,("check_cache: %s -> not mangled\n", name));
+ M_DEBUG(10,("lookup_name_from_8_3: %s -> not mangled\n", name));
return False;
}
/* now look in the prefix cache for that hash */
prefix = cache_lookup(hash);
if (!prefix) {
- M_DEBUG(10,("check_cache: %s -> %08X -> not found\n", name, hash));
+ M_DEBUG(10,("lookup_name_from_8_3: %s -> %08X -> not found\n",
+ name, hash));
return False;
}
}
if (extension[0]) {
- M_DEBUG(10,("check_cache: %s -> %s.%s\n", name, prefix, extension));
- slprintf(name, maxlen, "%s.%s", prefix, extension);
+ M_DEBUG(10,("lookup_name_from_8_3: %s -> %s.%s\n",
+ name, prefix, extension));
+ *pp_out = talloc_asprintf(ctx, "%s.%s", prefix, extension);
} else {
- M_DEBUG(10,("check_cache: %s -> %s\n", name, prefix));
- safe_strcpy(name, prefix, maxlen);
+ M_DEBUG(10,("lookup_name_from_8_3: %s -> %s\n", name, prefix));
+ *pp_out = talloc_strdup(ctx, prefix);
+ }
+
+ if (!pp_out) {
+ M_DEBUG(0,("talloc_fail"));
+ return False;
}
return True;
}
-
/*
look for a DOS reserved name
*/
return True;
}
+static BOOL must_mangle(const char *name,
+ const struct share_params *p)
+{
+ if (is_reserved_name(name)) {
+ return True;
+ }
+ return !is_legal_name(name);
+}
+
/*
the main forward mapping function, which converts a long filename to
a 8.3 name
- if need83 is not set then we only do the mangling if the name is illegal
- as a long name
-
if cache83 is not set then we don't cache the result
- the name parameter must be able to hold 13 bytes
*/
-static void name_map(fstring name, BOOL need83, BOOL cache83, int default_case, const struct share_params *p)
+static BOOL hash2_name_to_8_3(const char *name,
+ char new_name[13],
+ BOOL cache83,
+ int default_case,
+ const struct share_params *p)
{
char *dot_p;
char lead_chars[7];
unsigned int extension_length, i;
unsigned int prefix_len;
unsigned int hash, v;
- char new_name[13];
/* reserved names are handled specially */
if (!is_reserved_name(name)) {
- /* if the name is already a valid 8.3 name then we don't need to
- do anything */
- if (is_8_3(name, False, False, p)) {
- return;
- }
-
- /* if the caller doesn't strictly need 8.3 then just check for illegal
- filenames */
- if (!need83 && is_legal_name(name)) {
- return;
+ /* if the name is already a valid 8.3 name then we don't need to
+ * change anything */
+ if (is_legal_name(name) && is_8_3(name, False, False, p)) {
+ safe_strcpy(new_name, name, 12);
+ return True;
}
}
break;
}
}
- if (i == 0 || i == 4) dot_p = NULL;
+ if (i == 0 || i == 4) {
+ dot_p = NULL;
+ }
}
/* the leading characters in the mangled name is taken from
for (i=1; extension_length < 3 && dot_p[i]; i++) {
char c = dot_p[i];
if (FLAG_CHECK(c, FLAG_ASCII)) {
- extension[extension_length++] = toupper_ascii(c);
+ extension[extension_length++] =
+ toupper_ascii(c);
}
}
}
-
+
/* find the hash for this prefix */
v = hash = mangle_hash(name, prefix_len);
new_name[i] = lead_chars[i];
}
new_name[7] = base_forward(v % 36);
- new_name[6] = '~';
+ new_name[6] = '~';
for (i=5; i>=mangle_prefix; i--) {
v = v / 36;
new_name[i] = base_forward(v % 36);
cache_insert(name, prefix_len, hash);
}
- M_DEBUG(10,("name_map: %s -> %08X -> %s (cache=%d)\n",
+ M_DEBUG(10,("hash2_name_to_8_3: %s -> %08X -> %s (cache=%d)\n",
name, hash, new_name, cache83));
- /* and overwrite the old name */
- fstrcpy(name, new_name);
-
- /* all done, we've managed to mangle it */
+ return True;
}
-
-/* initialise the flags table
+/* initialise the flags table
we allow only a very restricted set of characters as 'ascii' in this
mangling backend. This isn't a significant problem as modern clients
use the 'long' filenames anyway, and those don't have these
- restrictions.
+ restrictions.
*/
static void init_tables(void)
{
char_flags[i] |= FLAG_ILLEGAL;
}
- if ((i >= '0' && i <= '9') ||
- (i >= 'a' && i <= 'z') ||
+ if ((i >= '0' && i <= '9') ||
+ (i >= 'a' && i <= 'z') ||
(i >= 'A' && i <= 'Z')) {
char_flags[i] |= (FLAG_ASCII | FLAG_BASECHAR);
}
memset(base_reverse, 0, sizeof(base_reverse));
for (i=0;i<36;i++) {
base_reverse[(unsigned char)base_forward(i)] = i;
- }
+ }
/* fill in the reserved names flags. These are used as a very
fast filter for finding possible DOS reserved filenames */
static struct mangle_fns mangle_fns = {
mangle_reset,
is_mangled,
+ must_mangle,
is_8_3,
- check_cache,
- name_map
+ lookup_name_from_8_3,
+ hash2_name_to_8_3
};
/* return the methods for this mangling implementation */
return False;
}
-static BOOL posix_is_8_3(const char *fname, BOOL check_case, BOOL allow_wildcards, const struct share_params *p)
+static BOOL posix_must_mangle(const char *s, const struct share_params *p)
{
return False;
}
-static BOOL posix_check_cache( char *s, size_t maxlen, const struct share_params *p )
+static BOOL posix_is_8_3(const char *fname,
+ BOOL check_case,
+ BOOL allow_wildcards,
+ const struct share_params *p)
{
return False;
}
-static void posix_name_map(char *OutName, BOOL need83, BOOL cache83, int default_case, const struct share_params *p)
+static BOOL posix_lookup_name_from_8_3(TALLOC_CTX *ctx,
+ const char *in,
+ char **out, /* talloced on the given context. */
+ const struct share_params *p)
{
- if (need83) {
- memset(OutName, '\0', 13);
- }
+ return False;
+}
+
+static BOOL posix_name_to_8_3(const char *in,
+ char out[13],
+ BOOL cache83,
+ int default_case,
+ const struct share_params *p)
+{
+ memset(out, '\0', 13);
+ return True;
}
/* POSIX paths backend - no mangle. */
static struct mangle_fns posix_mangle_fns = {
- posix_mangle_reset,
- posix_is_mangled,
- posix_is_8_3,
- posix_check_cache,
- posix_name_map
+ posix_mangle_reset,
+ posix_is_mangled,
+ posix_must_mangle,
+ posix_is_8_3,
+ posix_lookup_name_from_8_3,
+ posix_name_to_8_3
};
struct mangle_fns *posix_mangle_init(void)
git.samba.org / ira / wip.git / blobdiff