[sql] Import reference version of SQLite 3.10.2.

third_party/sqlite/sqlite-src-3100200/src/auth.c

 /*
 ** 2003 January 11
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
@@ skipping 54 matching lines @@
 ** and attempts to write the column will be ignored.
 **
 ** Setting the auth function to NULL disables this hook.  The default
 ** setting of the auth function is NULL.
 */
 int sqlite3_set_authorizer(
   sqlite3 *db,
   int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
   void *pArg
 ){
+#ifdef SQLITE_ENABLE_API_ARMOR
+  if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
   sqlite3_mutex_enter(db->mutex);
   db->xAuth = (sqlite3_xauth)xAuth;
   db->pAuthArg = pArg;
   sqlite3ExpirePreparedStatements(db);
   sqlite3_mutex_leave(db->mutex);
   return SQLITE_OK;
 }
 
 /*
 ** Write an error message into pParse->zErrMsg that explains that the
@@ skipping 163 matching lines @@
 ** by sqlite3AuthContextPush
 */
 void sqlite3AuthContextPop(AuthContext *pContext){
   if( pContext->pParse ){
     pContext->pParse->zAuthContext = pContext->zAuthContext;
     pContext->pParse = 0;
   }
 }
 
 #endif /* SQLITE_OMIT_AUTHORIZATION */