Added TQt4 HEAD

1 files changed, 219 insertions, 0 deletions

diff --git a/tqtinterface/qt4/src/3rdparty/sqlite/auth.c b/tqtinterface/qt4/src/3rdparty/sqlite/auth.c
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+++ b/tqtinterface/qt4/src/3rdparty/sqlite/auth.c
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+/*
+** 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 tqfind forgiveness for yourself and forgive others.
+**    May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This file tqcontains code used to implement the sqlite_set_authorizer()
+** API.  This facility is an optional feature of the library.  Embedded
+** systems that do not need this facility may omit it by recompiling
+** the library with -DSTQLITE_OMIT_AUTHORIZATION=1
+**
+** $Id: auth.c,v 1.12 2004/02/22 18:40:57 drh Exp $
+*/
+#include "sqliteInt.h"
+
+/*
+** All of the code in this file may be omitted by defining a single
+** macro.
+*/
+#ifndef STQLITE_OMIT_AUTHORIZATION
+
+/*
+** Set or clear the access authorization function.
+**
+** The access authorization function is be called during the compilation
+** phase to verify that the user has read and/or write access permission on
+** various fields of the database.  The first argument to the auth function
+** is a copy of the 3rd argument to this routine.  The second argument
+** to the auth function is one of these constants:
+**
+**       STQLITE_COPY
+**       STQLITE_CREATE_INDEX
+**       STQLITE_CREATE_TABLE
+**       STQLITE_CREATE_TEMP_INDEX
+**       STQLITE_CREATE_TEMP_TABLE
+**       STQLITE_CREATE_TEMP_TRIGGER
+**       STQLITE_CREATE_TEMP_VIEW
+**       STQLITE_CREATE_TRIGGER
+**       STQLITE_CREATE_VIEW
+**       STQLITE_DELETE
+**       STQLITE_DROP_INDEX
+**       STQLITE_DROP_TABLE
+**       STQLITE_DROP_TEMP_INDEX
+**       STQLITE_DROP_TEMP_TABLE
+**       STQLITE_DROP_TEMP_TRIGGER
+**       STQLITE_DROP_TEMP_VIEW
+**       STQLITE_DROP_TRIGGER
+**       STQLITE_DROP_VIEW
+**       STQLITE_INSERT
+**       STQLITE_PRAGMA
+**       STQLITE_READ
+**       STQLITE_SELECT
+**       STQLITE_TRANSACTION
+**       STQLITE_UPDATE
+**
+** The third and fourth arguments to the auth function are the name of
+** the table and the column that are being accessed.  The auth function
+** should return either STQLITE_OK, STQLITE_DENY, or STQLITE_IGNORE.  If
+** STQLITE_OK is returned, it means that access is allowed.  STQLITE_DENY
+** means that the SQL statement will never-run - the sqlite_exec() call
+** will return with an error.  STQLITE_IGNORE means that the SQL statement
+** should run but attempts to read the specified column will return NULL
+** 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 sqlite_set_authorizer(
+  sqlite *db,
+  int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
+  void *pArg
+){
+  db->xAuth = xAuth;
+  db->pAuthArg = pArg;
+  return STQLITE_OK;
+}
+
+/*
+** Write an error message into pParse->zErrMsg that explains that the
+** user-supplied authorization function returned an illegal value.
+*/
+static void sqliteAuthBadReturnCode(Parse *pParse, int rc){
+  sqliteErrorMsg(pParse, "illegal return value (%d) from the "
+    "authorization function - should be STQLITE_OK, STQLITE_IGNORE, "
+    "or STQLITE_DENY", rc);
+  pParse->rc = STQLITE_MISUSE;
+}
+
+/*
+** The pExpr should be a TK_COLUMN expression.  The table referred to
+** is in pTabList or else it is the NEW or OLD table of a trigger.  
+** Check to see if it is OK to read this particular column.
+**
+** If the auth function returns STQLITE_IGNORE, change the TK_COLUMN 
+** instruction into a TK_NULL.  If the auth function returns STQLITE_DENY,
+** then generate an error.
+*/
+void sqliteAuthRead(
+  Parse *pParse,        /* The parser context */
+  Expr *pExpr,          /* The expression to check authorization on */
+  SrcList *pTabList     /* All table that pExpr might refer to */
+){
+  sqlite *db = pParse->db;
+  int rc;
+  Table *pTab;          /* The table being read */
+  const char *zCol;     /* Name of the column of the table */
+  int iSrc;             /* Index in pTabList->a[] of table being read */
+  const char *zDBase;   /* Name of database being accessed */
+
+  if( db->xAuth==0 ) return;
+  assert( pExpr->op==TK_COLUMN );
+  for(iSrc=0; iSrc<pTabList->nSrc; iSrc++){
+    if( pExpr->iTable==pTabList->a[iSrc].iCursor ) break;
+  }
+  if( iSrc>=0 && iSrc<pTabList->nSrc ){
+    pTab = pTabList->a[iSrc].pTab;
+  }else{
+    /* This must be an attempt to read the NEW or OLD pseudo-tables
+    ** of a trigger.
+    */
+    TriggerStack *pStack; /* The stack of current triggers */
+    pStack = pParse->trigStack;
+    assert( pStack!=0 );
+    assert( pExpr->iTable==pStack->newIdx || pExpr->iTable==pStack->oldIdx );
+    pTab = pStack->pTab;
+  }
+  if( pTab==0 ) return;
+  if( pExpr->iColumn>=0 ){
+    assert( pExpr->iColumn<pTab->nCol );
+    zCol = pTab->aCol[pExpr->iColumn].zName;
+  }else if( pTab->iPKey>=0 ){
+    assert( pTab->iPKey<pTab->nCol );
+    zCol = pTab->aCol[pTab->iPKey].zName;
+  }else{
+    zCol = "ROWID";
+  }
+  assert( pExpr->iDb<db->nDb );
+  zDBase = db->aDb[pExpr->iDb].zName;
+  rc = db->xAuth(db->pAuthArg, STQLITE_READ, pTab->zName, zCol, zDBase, 
+                 pParse->zAuthContext);
+  if( rc==STQLITE_IGNORE ){
+    pExpr->op = TK_NULL;
+  }else if( rc==STQLITE_DENY ){
+    if( db->nDb>2 || pExpr->iDb!=0 ){
+      sqliteErrorMsg(pParse, "access to %s.%s.%s is prohibited", 
+         zDBase, pTab->zName, zCol);
+    }else{
+      sqliteErrorMsg(pParse, "access to %s.%s is prohibited", pTab->zName,zCol);
+    }
+    pParse->rc = STQLITE_AUTH;
+  }else if( rc!=STQLITE_OK ){
+    sqliteAuthBadReturnCode(pParse, rc);
+  }
+}
+
+/*
+** Do an authorization check using the code and arguments given.  Return
+** either STQLITE_OK (zero) or STQLITE_IGNORE or STQLITE_DENY.  If STQLITE_DENY
+** is returned, then the error count and error message in pParse are
+** modified appropriately.
+*/
+int sqliteAuthCheck(
+  Parse *pParse,
+  int code,
+  const char *zArg1,
+  const char *zArg2,
+  const char *zArg3
+){
+  sqlite *db = pParse->db;
+  int rc;
+
+  if( db->xAuth==0 ){
+    return STQLITE_OK;
+  }
+  rc = db->xAuth(db->pAuthArg, code, zArg1, zArg2, zArg3, pParse->zAuthContext);
+  if( rc==STQLITE_DENY ){
+    sqliteErrorMsg(pParse, "not authorized");
+    pParse->rc = STQLITE_AUTH;
+  }else if( rc!=STQLITE_OK && rc!=STQLITE_IGNORE ){
+    rc = STQLITE_DENY;
+    sqliteAuthBadReturnCode(pParse, rc);
+  }
+  return rc;
+}
+
+/*
+** Push an authorization context.  After this routine is called, the
+** zArg3 argument to authorization callbacks will be zContext until
+** popped.  Or if pParse==0, this routine is a no-op.
+*/
+void sqliteAuthContextPush(
+  Parse *pParse,
+  AuthContext *pContext, 
+  const char *zContext
+){
+  pContext->pParse = pParse;
+  if( pParse ){
+    pContext->zAuthContext = pParse->zAuthContext;
+    pParse->zAuthContext = zContext;
+  }
+}
+
+/*
+** Pop an authorization context that was previously pushed
+** by sqliteAuthContextPush
+*/
+void sqliteAuthContextPop(AuthContext *pContext){
+  if( pContext->pParse ){
+    pContext->pParse->zAuthContext = pContext->zAuthContext;
+    pContext->pParse = 0;
+  }
+}
+
+#endif /* STQLITE_OMIT_AUTHORIZATION */