Fresh meat in trusted domains code:

 - packing/unpacking utility functions for trusted domain
   password struct; can be used to prepare buffer to store
   in secrets.tdb or (soon) passdb backend
 - similiar functions for DOM_SID
 - respectively modified secrets_(fetch|store) routines
 - new auth mapping code utilising introduced is_trusted_domain
   function
 - added tdb (un)packing of single bytes



Rafal
(This used to be commit 5281ee7e84421b9be746aed2f1718ceaf2a2fe3d)

1 files changed, 146 insertions, 7 deletions

diff --git a/source3/tdb/tdbutil.c b/source3/tdb/tdbutil.c
index 0d8f6128cc..b153d442bd 100644
--- a/source3/tdb/tdbutil.c
+++ b/source3/tdb/tdbutil.c
@@ -42,7 +42,7 @@ static void gotalarm_sig(void)
 static TDB_DATA make_tdb_data(const char *dptr, size_t dsize)
 {
 	TDB_DATA ret;
-	ret.dptr = dptr;
+	ret.dptr = smb_xstrdup(dptr);
 	ret.dsize = dsize;
 	return ret;
 }
@@ -387,6 +387,7 @@ BOOL tdb_change_uint32_atomic(TDB_CONTEXT *tdb, const char *keystr, uint32 *oldv
 size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
 {
 	va_list ap;
+	uint8 bt;
 	uint16 w;
 	uint32 d;
 	int i;
@@ -402,40 +403,46 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
 
 	while (*fmt) {
 		switch ((c = *fmt++)) {
-		case 'w':
+		case 'b': /* unsigned 8-bit integer */
+			len = 1;
+			bt = (uint8)va_arg(ap, int);
+			if (bufsize >= len)
+				SSVAL(buf, 0, bt);
+			break;
+		case 'w': /* unsigned 16-bit integer */
 			len = 2;
 			w = (uint16)va_arg(ap, int);
 			if (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)
 				SIVAL(buf, 0, d);
 			break;
-		case 'p':
+		case 'p': /* pointer */
 			len = 4;
 			p = va_arg(ap, void *);
 			d = p?1:0;
 			if (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)
 				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)
 				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;
@@ -471,6 +478,7 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
 int tdb_unpack(char *buf, int bufsize, const char *fmt, ...)
 {
 	va_list ap;
+	uint8 *bt;
 	uint16 *w;
 	uint32 *d;
 	int len;
@@ -486,6 +494,13 @@ int tdb_unpack(char *buf, int bufsize, const char *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 *);
@@ -563,6 +578,130 @@ int tdb_unpack(char *buf, int bufsize, const char *fmt, ...)
 	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().
 ****************************************************************************/