/*
Unix SMB/CIFS implementation.
tdb utility functions
- Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Rafal Szczesniak 2002
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
/* these are little tdb utility functions that are meant to make
dealing with a tdb database a little less cumbersome in Samba */
+static SIG_ATOMIC_T gotalarm;
+
+/***************************************************************
+ Signal function to tell us we timed out.
+****************************************************************/
+
+static void gotalarm_sig(void)
+{
+ gotalarm = 1;
+}
+
+/***************************************************************
+ Make a TDB_DATA and keep the const warning in one place
+****************************************************************/
+
+TDB_DATA make_tdb_data(const char *dptr, size_t dsize)
+{
+ TDB_DATA ret;
+ ret.dptr = CONST_DISCARD(char *, dptr);
+ ret.dsize = dsize;
+ return ret;
+}
+
+TDB_DATA string_tdb_data(const char *string)
+{
+ return make_tdb_data(string, strlen(string));
+}
+
/****************************************************************************
- Lock a chain by string.
+ Lock a chain with timeout (in seconds).
****************************************************************************/
-int tdb_lock_bystring(TDB_CONTEXT *tdb, char *keyval)
+static int tdb_chainlock_with_timeout_internal( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout, int rw_type)
{
- TDB_DATA key;
+ /* Allow tdb_chainlock to be interrupted by an alarm. */
+ int ret;
+ gotalarm = 0;
+ tdb_set_lock_alarm(CONST_DISCARD(sig_atomic_t *, &gotalarm));
+
+ if (timeout) {
+ CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
+ alarm(timeout);
+ }
+
+ if (rw_type == F_RDLCK)
+ ret = tdb_chainlock_read(tdb, key);
+ else
+ ret = tdb_chainlock(tdb, key);
+
+ if (timeout) {
+ alarm(0);
+ CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
+ if (gotalarm) {
+ DEBUG(0,("tdb_chainlock_with_timeout_internal: alarm (%u) timed out for key %s in tdb %s\n",
+ timeout, key.dptr, tdb->name ));
+ /* TODO: If we time out waiting for a lock, it might
+ * be nice to use F_GETLK to get the pid of the
+ * process currently holding the lock and print that
+ * as part of the debugging message. -- mbp */
+ return -1;
+ }
+ }
- key.dptr = keyval;
- key.dsize = strlen(keyval)+1;
+ return ret;
+}
+
+/****************************************************************************
+ Write lock a chain. Return -1 if timeout or lock failed.
+****************************************************************************/
+
+int tdb_chainlock_with_timeout( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout)
+{
+ return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_WRLCK);
+}
+
+/****************************************************************************
+ Lock a chain by string. Return -1 if timeout or lock failed.
+****************************************************************************/
+
+int tdb_lock_bystring(TDB_CONTEXT *tdb, const char *keyval, unsigned int timeout)
+{
+ TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
- return tdb_chainlock(tdb, key);
+ return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_WRLCK);
}
/****************************************************************************
Unlock a chain by string.
****************************************************************************/
-void tdb_unlock_bystring(TDB_CONTEXT *tdb, char *keyval)
+void tdb_unlock_bystring(TDB_CONTEXT *tdb, const char *keyval)
{
- TDB_DATA key;
+ TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
- key.dptr = keyval;
- key.dsize = strlen(keyval)+1;
-
tdb_chainunlock(tdb, key);
}
+/****************************************************************************
+ Read lock a chain by string. Return -1 if timeout or lock failed.
+****************************************************************************/
+
+int tdb_read_lock_bystring(TDB_CONTEXT *tdb, const char *keyval, unsigned int timeout)
+{
+ TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
+
+ return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_RDLCK);
+}
+
+/****************************************************************************
+ Read unlock a chain by string.
+****************************************************************************/
+
+void tdb_read_unlock_bystring(TDB_CONTEXT *tdb, const char *keyval)
+{
+ TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
+
+ tdb_chainunlock_read(tdb, key);
+}
+
+
/****************************************************************************
Fetch a int32 value by a arbitrary blob key, return -1 if not found.
Output is int32 in native byte order.
****************************************************************************/
-int32 tdb_fetch_int32_byblob(TDB_CONTEXT *tdb, char *keyval, size_t len)
+int32 tdb_fetch_int32_byblob(TDB_CONTEXT *tdb, const char *keyval, size_t len)
{
- TDB_DATA key, data;
+ TDB_DATA key = make_tdb_data(keyval, len);
+ TDB_DATA data;
int32 ret;
- key.dptr = keyval;
- key.dsize = len;
data = tdb_fetch(tdb, key);
- if (!data.dptr || data.dsize != sizeof(int32))
+ if (!data.dptr || data.dsize != sizeof(int32)) {
+ SAFE_FREE(data.dptr);
return -1;
-
+ }
+
ret = IVAL(data.dptr,0);
SAFE_FREE(data.dptr);
return ret;
Output is int32 in native byte order.
****************************************************************************/
-int32 tdb_fetch_int32(TDB_CONTEXT *tdb, char *keystr)
+int32 tdb_fetch_int32(TDB_CONTEXT *tdb, const char *keystr)
{
return tdb_fetch_int32_byblob(tdb, keystr, strlen(keystr) + 1);
}
Input is int32 in native byte order. Output in tdb is in little-endian.
****************************************************************************/
-int tdb_store_int32_byblob(TDB_CONTEXT *tdb, char *keystr, size_t len, int32 v)
+int tdb_store_int32_byblob(TDB_CONTEXT *tdb, const char *keystr, size_t len, int32 v)
{
- TDB_DATA key, data;
+ TDB_DATA key = make_tdb_data(keystr, len);
+ TDB_DATA data;
int32 v_store;
- key.dptr = keystr;
- key.dsize = len;
SIVAL(&v_store,0,v);
data.dptr = (void *)&v_store;
data.dsize = sizeof(int32);
Input is int32 in native byte order. Output in tdb is in little-endian.
****************************************************************************/
-int tdb_store_int32(TDB_CONTEXT *tdb, char *keystr, int32 v)
+int tdb_store_int32(TDB_CONTEXT *tdb, const char *keystr, int32 v)
{
return tdb_store_int32_byblob(tdb, keystr, strlen(keystr) + 1, v);
}
Output is uint32 in native byte order.
****************************************************************************/
-BOOL tdb_fetch_uint32_byblob(TDB_CONTEXT *tdb, char *keyval, size_t len, uint32 *value)
+BOOL tdb_fetch_uint32_byblob(TDB_CONTEXT *tdb, const char *keyval, size_t len, uint32 *value)
{
- TDB_DATA key, data;
+ TDB_DATA key = make_tdb_data(keyval, len);
+ TDB_DATA data;
- key.dptr = keyval;
- key.dsize = len;
data = tdb_fetch(tdb, key);
- if (!data.dptr || data.dsize != sizeof(uint32))
+ if (!data.dptr || data.dsize != sizeof(uint32)) {
+ SAFE_FREE(data.dptr);
return False;
-
+ }
+
*value = IVAL(data.dptr,0);
SAFE_FREE(data.dptr);
return True;
Output is uint32 in native byte order.
****************************************************************************/
-BOOL tdb_fetch_uint32(TDB_CONTEXT *tdb, char *keystr, uint32 *value)
+BOOL tdb_fetch_uint32(TDB_CONTEXT *tdb, const char *keystr, uint32 *value)
{
return tdb_fetch_uint32_byblob(tdb, keystr, strlen(keystr) + 1, value);
}
Input is uint32 in native byte order. Output in tdb is in little-endian.
****************************************************************************/
-BOOL tdb_store_uint32_byblob(TDB_CONTEXT *tdb, char *keystr, size_t len, uint32 value)
+BOOL tdb_store_uint32_byblob(TDB_CONTEXT *tdb, const char *keystr, size_t len, uint32 value)
{
- TDB_DATA key, data;
+ TDB_DATA key = make_tdb_data(keystr, len);
+ TDB_DATA data;
uint32 v_store;
BOOL ret = True;
- key.dptr = keystr;
- key.dsize = len;
SIVAL(&v_store, 0, value);
data.dptr = (void *)&v_store;
data.dsize = sizeof(uint32);
Input is uint32 in native byte order. Output in tdb is in little-endian.
****************************************************************************/
-BOOL tdb_store_uint32(TDB_CONTEXT *tdb, char *keystr, uint32 value)
+BOOL tdb_store_uint32(TDB_CONTEXT *tdb, const char *keystr, uint32 value)
{
return tdb_store_uint32_byblob(tdb, keystr, strlen(keystr) + 1, value);
}
on failure.
****************************************************************************/
-int tdb_store_by_string(TDB_CONTEXT *tdb, char *keystr, void *buffer, int len)
+int tdb_store_bystring(TDB_CONTEXT *tdb, const char *keystr, TDB_DATA data, int flags)
{
- TDB_DATA key, data;
-
- key.dptr = keystr;
- key.dsize = strlen(keystr) + 1;
-
- data.dptr = buffer;
- data.dsize = len;
-
- return tdb_store(tdb, key, data, TDB_REPLACE);
+ TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1);
+
+ return tdb_store(tdb, key, data, flags);
}
/****************************************************************************
free() on the result dptr.
****************************************************************************/
-TDB_DATA tdb_fetch_by_string(TDB_CONTEXT *tdb, char *keystr)
+TDB_DATA tdb_fetch_bystring(TDB_CONTEXT *tdb, const char *keystr)
{
- TDB_DATA key;
+ TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1);
- key.dptr = keystr;
- key.dsize = strlen(keystr) + 1;
-
- return tdb_fetch(tdb, key);
+ return tdb_fetch(tdb, key);
}
/****************************************************************************
- Delete a buffer using a null terminated string key.
+ Delete an entry using a null terminated string key.
****************************************************************************/
-int tdb_delete_by_string(TDB_CONTEXT *tdb, char *keystr)
+int tdb_delete_bystring(TDB_CONTEXT *tdb, const char *keystr)
{
- TDB_DATA key;
-
- key.dptr = keystr;
- key.dsize = strlen(keystr) + 1;
+ TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1);
return tdb_delete(tdb, key);
}
Atomic integer change. Returns old value. To create, set initial value in *oldval.
****************************************************************************/
-int32 tdb_change_int32_atomic(TDB_CONTEXT *tdb, char *keystr, int32 *oldval, int32 change_val)
+int32 tdb_change_int32_atomic(TDB_CONTEXT *tdb, const char *keystr, int32 *oldval, int32 change_val)
{
int32 val;
int32 ret = -1;
- if (tdb_lock_bystring(tdb, keystr) == -1)
+ if (tdb_lock_bystring(tdb, keystr,0) == -1)
return -1;
if ((val = tdb_fetch_int32(tdb, keystr)) == -1) {
/* The lookup failed */
if (tdb_error(tdb) != TDB_ERR_NOEXIST) {
- /* but not becouse it didn't exist */
+ /* but not because it didn't exist */
goto err_out;
}
Atomic unsigned integer change. Returns old value. To create, set initial value in *oldval.
****************************************************************************/
-BOOL tdb_change_uint32_atomic(TDB_CONTEXT *tdb, char *keystr, uint32 *oldval, uint32 change_val)
+BOOL tdb_change_uint32_atomic(TDB_CONTEXT *tdb, const char *keystr, uint32 *oldval, uint32 change_val)
{
uint32 val;
BOOL ret = False;
- if (tdb_lock_bystring(tdb, keystr) == -1)
+ if (tdb_lock_bystring(tdb, keystr,0) == -1)
return False;
if (!tdb_fetch_uint32(tdb, keystr, &val)) {
/* It failed */
if (tdb_error(tdb) != TDB_ERR_NOEXIST) {
- /* and not becouse it didn't exist */
+ /* and not because it didn't exist */
goto err_out;
}
integers and strings.
****************************************************************************/
-size_t tdb_pack(char *buf, int bufsize, char *fmt, ...)
+size_t tdb_pack_va(char *buf, int bufsize, const char *fmt, va_list ap)
{
- va_list ap;
+ uint8 bt;
uint16 w;
uint32 d;
int i;
char *s;
char c;
char *buf0 = buf;
- char *fmt0 = fmt;
+ const char *fmt0 = fmt;
int bufsize0 = bufsize;
- va_start(ap, fmt);
-
while (*fmt) {
switch ((c = *fmt++)) {
- case 'w':
+ case 'b': /* unsigned 8-bit integer */
+ len = 1;
+ bt = (uint8)va_arg(ap, int);
+ if (bufsize && bufsize >= len)
+ SSVAL(buf, 0, bt);
+ break;
+ case 'w': /* unsigned 16-bit integer */
len = 2;
w = (uint16)va_arg(ap, int);
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SSVAL(buf, 0, w);
break;
- case 'd':
+ case 'd': /* signed 32-bit integer (standard int in most systems) */
len = 4;
d = va_arg(ap, uint32);
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SIVAL(buf, 0, d);
break;
- case 'p':
+ case 'p': /* pointer */
len = 4;
p = va_arg(ap, void *);
d = p?1:0;
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
SIVAL(buf, 0, d);
break;
- case 'P':
+ case 'P': /* null-terminated string */
s = va_arg(ap,char *);
w = strlen(s);
len = w + 1;
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
memcpy(buf, s, len);
break;
- case 'f':
+ case 'f': /* null-terminated string */
s = va_arg(ap,char *);
w = strlen(s);
len = w + 1;
- if (bufsize >= len)
+ if (bufsize && bufsize >= len)
memcpy(buf, s, len);
break;
- case 'B':
+ case 'B': /* fixed-length string */
i = va_arg(ap, int);
s = va_arg(ap, char *);
len = 4+i;
- if (bufsize >= len) {
+ if (bufsize && bufsize >= len) {
SIVAL(buf, 0, i);
memcpy(buf+4, s, i);
}
}
buf += len;
- bufsize -= len;
+ if (bufsize)
+ bufsize -= len;
+ if (bufsize < 0)
+ bufsize = 0;
}
- va_end(ap);
-
- DEBUG(18,("tdb_pack(%s, %d) -> %d\n",
+ DEBUG(18,("tdb_pack_va(%s, %d) -> %d\n",
fmt0, bufsize0, (int)PTR_DIFF(buf, buf0)));
return PTR_DIFF(buf, buf0);
}
+size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
+{
+ va_list ap;
+ size_t result;
+
+ va_start(ap, fmt);
+ result = tdb_pack_va(buf, bufsize, fmt, ap);
+ va_end(ap);
+ return result;
+}
+
+BOOL tdb_pack_append(TALLOC_CTX *mem_ctx, uint8_t **buf, size_t *len,
+ const char *fmt, ...)
+{
+ va_list ap;
+ size_t len1, len2;
+
+ va_start(ap, fmt);
+ len1 = tdb_pack_va(NULL, 0, fmt, ap);
+ va_end(ap);
+
+ if (mem_ctx != NULL)
+ *buf = TALLOC_REALLOC_ARRAY(mem_ctx, *buf, uint8_t,
+ (*len) + len1);
+ else
+ *buf = SMB_REALLOC_ARRAY(*buf, uint8_t, (*len) + len1);
+
+ if (*buf == NULL)
+ return False;
+
+ va_start(ap, fmt);
+ len2 = tdb_pack_va((*buf)+(*len), len1, fmt, ap);
+ va_end(ap);
+
+ if (len1 != len2)
+ return False;
+
+ *len += len2;
+
+ return True;
+}
+
/****************************************************************************
Useful pair of routines for packing/unpacking data consisting of
integers and strings.
****************************************************************************/
-int tdb_unpack(char *buf, int bufsize, char *fmt, ...)
+int tdb_unpack(char *buf, int bufsize, const char *fmt, ...)
{
va_list ap;
+ uint8 *bt;
uint16 *w;
uint32 *d;
int len;
char *s, **b;
char c;
char *buf0 = buf;
- char *fmt0 = fmt;
+ const char *fmt0 = fmt;
int bufsize0 = bufsize;
va_start(ap, fmt);
while (*fmt) {
switch ((c=*fmt++)) {
+ case 'b':
+ len = 1;
+ bt = va_arg(ap, uint8 *);
+ if (bufsize < len)
+ goto no_space;
+ *bt = SVAL(buf, 0);
+ break;
case 'w':
len = 2;
w = va_arg(ap, uint16 *);
len += *i;
if (bufsize < len)
goto no_space;
- *b = (char *)malloc(*i);
+ *b = (char *)SMB_MALLOC(*i);
if (! *b)
goto no_space;
memcpy(*b, buf+4, *i);
return -1;
}
+
+/**
+ * Pack SID passed by pointer
+ *
+ * @param pack_buf pointer to buffer which is to be filled with packed data
+ * @param bufsize size of packing buffer
+ * @param sid pointer to sid to be packed
+ *
+ * @return length of the packed representation of the whole structure
+ **/
+size_t tdb_sid_pack(char* pack_buf, int bufsize, DOM_SID* sid)
+{
+ int idx;
+ size_t len = 0;
+
+ if (!sid || !pack_buf) return -1;
+
+ len += tdb_pack(pack_buf + len, bufsize - len, "bb", sid->sid_rev_num,
+ sid->num_auths);
+
+ for (idx = 0; idx < 6; idx++) {
+ len += tdb_pack(pack_buf + len, bufsize - len, "b", sid->id_auth[idx]);
+ }
+
+ for (idx = 0; idx < MAXSUBAUTHS; idx++) {
+ len += tdb_pack(pack_buf + len, bufsize - len, "d", sid->sub_auths[idx]);
+ }
+
+ return len;
+}
+
+
+/**
+ * Unpack SID into a pointer
+ *
+ * @param pack_buf pointer to buffer with packed representation
+ * @param bufsize size of the buffer
+ * @param sid pointer to sid structure to be filled with unpacked data
+ *
+ * @return size of structure unpacked from buffer
+ **/
+size_t tdb_sid_unpack(char* pack_buf, int bufsize, DOM_SID* sid)
+{
+ int idx, len = 0;
+
+ if (!sid || !pack_buf) return -1;
+
+ len += tdb_unpack(pack_buf + len, bufsize - len, "bb",
+ &sid->sid_rev_num, &sid->num_auths);
+
+ for (idx = 0; idx < 6; idx++) {
+ len += tdb_unpack(pack_buf + len, bufsize - len, "b", &sid->id_auth[idx]);
+ }
+
+ for (idx = 0; idx < MAXSUBAUTHS; idx++) {
+ len += tdb_unpack(pack_buf + len, bufsize - len, "d", &sid->sub_auths[idx]);
+ }
+
+ return len;
+}
+
+
+/**
+ * Pack TRUSTED_DOM_PASS passed by pointer
+ *
+ * @param pack_buf pointer to buffer which is to be filled with packed data
+ * @param bufsize size of the buffer
+ * @param pass pointer to trusted domain password to be packed
+ *
+ * @return length of the packed representation of the whole structure
+ **/
+size_t tdb_trusted_dom_pass_pack(char* pack_buf, int bufsize, TRUSTED_DOM_PASS* pass)
+{
+ int idx, len = 0;
+
+ if (!pack_buf || !pass) return -1;
+
+ /* packing unicode domain name and password */
+ len += tdb_pack(pack_buf + len, bufsize - len, "d", pass->uni_name_len);
+
+ for (idx = 0; idx < 32; idx++)
+ len += tdb_pack(pack_buf + len, bufsize - len, "w", pass->uni_name[idx]);
+
+ len += tdb_pack(pack_buf + len, bufsize - len, "dPd", pass->pass_len,
+ pass->pass, pass->mod_time);
+
+ /* packing SID structure */
+ len += tdb_sid_pack(pack_buf + len, bufsize - len, &pass->domain_sid);
+
+ return len;
+}
+
+
+/**
+ * Unpack TRUSTED_DOM_PASS passed by pointer
+ *
+ * @param pack_buf pointer to buffer with packed representation
+ * @param bufsize size of the buffer
+ * @param pass pointer to trusted domain password to be filled with unpacked data
+ *
+ * @return size of structure unpacked from buffer
+ **/
+size_t tdb_trusted_dom_pass_unpack(char* pack_buf, int bufsize, TRUSTED_DOM_PASS* pass)
+{
+ int idx, len = 0;
+
+ if (!pack_buf || !pass) return -1;
+
+ /* unpack unicode domain name and plaintext password */
+ len += tdb_unpack(pack_buf, bufsize - len, "d", &pass->uni_name_len);
+
+ for (idx = 0; idx < 32; idx++)
+ len += tdb_unpack(pack_buf + len, bufsize - len, "w", &pass->uni_name[idx]);
+
+ len += tdb_unpack(pack_buf + len, bufsize - len, "dPd", &pass->pass_len, &pass->pass,
+ &pass->mod_time);
+
+ /* unpack domain sid */
+ len += tdb_sid_unpack(pack_buf + len, bufsize - len, &pass->domain_sid);
+
+ return len;
+}
+
+
/****************************************************************************
Log tdb messages via DEBUG().
****************************************************************************/
tdb_flags |= TDB_NOMMAP;
tdb = tdb_open_ex(name, hash_size, tdb_flags,
- open_flags, mode, tdb_log);
+ open_flags, mode, tdb_log, NULL);
if (!tdb)
return NULL;
for (key = tdb_firstkey(tdb); key.dptr; key = next) {
/* duplicate key string to ensure null-termination */
- char *key_str = (char*) strndup(key.dptr, key.dsize);
+ char *key_str = (char*) SMB_STRNDUP(key.dptr, key.dsize);
if (!key_str) {
DEBUG(0, ("tdb_search_keys: strndup() failed!\n"));
smb_panic("strndup failed!\n");
/* do the pattern checking */
if (fnmatch(pattern, key_str, 0) == 0) {
- rec = (TDB_LIST_NODE*) malloc(sizeof(*rec));
+ rec = SMB_MALLOC_P(TDB_LIST_NODE);
ZERO_STRUCTP(rec);
rec->node_key = key;
return list;
-};
+}
/**
while (node) {
next_node = node->next;
+ SAFE_FREE(node->node_key.dptr);
SAFE_FREE(node);
node = next_node;
};
-};
-
-
+}
git.samba.org / amitay / samba.git / blobdiff