Do not allow triggers on the SQLITE_MASTER table. (CVS 579)

FossilOrigin-Name: 275ba356f351abcf9a079ac16b765c9443750f0e

manifest

@@ -1,5 +1,5 @@
-C Fix\sfor\sticket\s#46:\sReport\san\serror\sif\sa\sCREATE\sTABLE\scontains\stwo\sor\smore\ncolumns\swith\sthe\ssame\sname.\s(CVS\s578)
+C Do\snot\sallow\striggers\son\sthe\sSQLITE_MASTER\stable.\s(CVS\s579)
-D 2002-05-22T21:27:03
+D 2002-05-23T00:30:31
 F Makefile.in 6291a33b87d2a395aafd7646ee1ed562c6f2c28c
 F Makefile.template 4e11752e0b5c7a043ca50af4296ec562857ba495
 F README a4c0ba11354ef6ba0776b400d057c59da47a4cc0
@@ -34,7 +34,7 @@ F src/os.c 5ab8b6b4590d0c1ab8e96c67996c170e4462e0fc
 F src/os.h 4a361fccfbc4e7609b3e1557f604f94c1e96ad10
 F src/pager.c ba5740104cc27b342cd43eebfdc44d60f64a3ded
 F src/pager.h 6fddfddd3b73aa8abc081b973886320e3c614f0e
-F src/parse.y 964a7cc954e3b84e9de54692648fb70bee1c0ba8
+F src/parse.y 3f2f7334aa1460bf5b208f51b9e1f53747e552ff
 F src/printf.c d8032ee18b860c812eeff596c9bebfdacb7930fd
 F src/random.c 19e8e00fe0df32a742f115773f57651be327cabe
 F src/select.c 1b623a7d826ec7c245bc542b665d61724da2a62d
@@ -48,8 +48,8 @@ F src/test1.c 09d95048b66ce6dcd2bae90f443589043d7d631e
 F src/test2.c 669cc22781c6461a273416ec1a7414d25c081730
 F src/test3.c 4e52fff8b01f08bd202f7633feda5639b7ba2b5e
 F src/threadtest.c 81f0598e0f031c1bd506af337fdc1b7e8dff263f
-F src/tokenize.c f12f78c58b2a79ea4eee880efad63a328e103c62
+F src/tokenize.c 5892a8eb8f0063718f5bec1a1b24f4c6029eba9b
-F src/trigger.c d40853730bf392ec7c3b25fc65550af40b9094f6
+F src/trigger.c 0b86599dd395307e330e6dce143d9d04bd051580
 F src/update.c 46c4b3e86c066cd8a0dcf0b75e4580bcf113aeb0
 F src/util.c 707c30f8c13cddace7c08556ac450c0b786660b3
 F src/vdbe.c 5fd717e6a42e98e4f244a2149267004f71f23679
@@ -99,8 +99,8 @@ F test/tclsqlite.test 79deeffd7cd637ca0f06c5dbbf2f44d272079533
 F test/temptable.test daa83489eea2e9aaeeece09675c28be84c72cb67
 F test/tester.tcl dc1b56bd628b487e4d75bfd1e7480b5ed8810ac6
 F test/trans.test ae0b9a82d5d34122c3a3108781eb8d078091ccee
-F test/trigger1.test 06dd47935cf38ce5de0b232e7b61aad57685bae1
+F test/trigger1.test 75f31403db0f4ae98391cff3ae396b6346a68913
-F test/trigger2.test 662818d5cc3313c14819df1c9084c119057a0bde
+F test/trigger2.test 2d23ad8a7e74c64018b6c7dff79bbf2574ffd776
 F test/unique.test 07776624b82221a80c8b4138ce0dd8b0853bb3ea
 F test/update.test a0aa0bf83e6fad8407d0e4ad25ebb09b513f5bf4
 F test/vacuum.test 059871b312eb910bbe49dafde1d01490cc2c6bbe
@@ -134,7 +134,7 @@ F www/speed.tcl da8afcc1d3ccc5696cfb388a68982bc3d9f7f00f
 F www/sqlite.tcl 8b5884354cb615049aed83039f8dfe1552a44279
 F www/tclsqlite.tcl 1db15abeb446aad0caf0b95b8b9579720e4ea331
 F www/vdbe.tcl 2013852c27a02a091d39a766bc87cff329f21218
-P 0c903461533fabca7815e8cccbd3b712bcd22ddc
+P ba1953abd04671232cf9e93ab3f962fedbbdc508
-R eaf5d8758292d7cdb287f773e215d706
+R a952285f133ca5b16c99838ac55a7dcb
 U drh
-Z f48c858d25b915a9feadbebd4ae9d048
+Z 8f9363819a6fa7621778a9a4ae7a975a

manifest.uuid

@@ -1 +1 @@
-ba1953abd04671232cf9e93ab3f962fedbbdc508
+275ba356f351abcf9a079ac16b765c9443750f0e

src/parse.y

@@ -14,7 +14,7 @@
 ** the parser.  Lemon will also generate a header file containing
 ** numeric codes for all of the tokens.
 **
-** @(#) $Id: parse.y,v 1.66 2002/05/21 11:38:12 drh Exp $
+** @(#) $Id: parse.y,v 1.67 2002/05/23 00:30:31 drh Exp $
 */
 %token_prefix TK_
 %token_type {Token}
@@ -124,6 +124,7 @@ id(A) ::= OFFSET(X).     {A = X;}
 id(A) ::= PRAGMA(X).     {A = X;}
 id(A) ::= REPLACE(X).    {A = X;}
 id(A) ::= ROW(X).        {A = X;}
+id(A) ::= STATEMENT(X).  {A = X;}
 id(A) ::= TEMP(X).       {A = X;}
 id(A) ::= TRIGGER(X).    {A = X;}
 id(A) ::= VACUUM(X).     {A = X;}

src/tokenize.c

@@ -15,7 +15,7 @@
 ** individual tokens and sends those tokens one-by-one over to the
 ** parser for analysis.
 **
-** $Id: tokenize.c,v 1.41 2002/05/15 08:30:14 danielk1977 Exp $
+** $Id: tokenize.c,v 1.42 2002/05/23 00:30:31 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -100,6 +100,7 @@ static Keyword aKeywordTable[] = {
   { "ROW",               0, TK_ROW,              0 },
   { "SELECT",            0, TK_SELECT,           0 },
   { "SET",               0, TK_SET,              0 },
+  { "STATEMENT",         0, TK_STATEMENT,        0 },
   { "TABLE",             0, TK_TABLE,            0 },
   { "TEMP",              0, TK_TEMP,             0 },
   { "TEMPORARY",         0, TK_TEMP,             0 },

src/trigger.c

@@ -60,6 +60,12 @@ void sqliteCreateTrigger(
       pParse->nErr++;
       goto trigger_cleanup;
     }
+    if( sqliteStrICmp(tab->zName, MASTER_NAME)==0 ){
+      sqliteSetString(&pParse->zErrMsg, "cannot create trigger on system "
+         "table: " MASTER_NAME, 0);
+      pParse->nErr++;
+      goto trigger_cleanup;
+    }
   }
 
   /* Build the Trigger object */

test/trigger1.test

@@ -102,6 +102,14 @@ do_test trig_cd-1.8 {
   } 
 } {0}
 
+do_test trig_cd-1.9 {
+  catchsql {
+    CREATE TRIGGER tr1 AFTER UPDATE ON sqlite_master BEGIN
+       SELECT * FROM sqlite_master;
+    END;
+  }
+} {1 {cannot create trigger on system table: sqlite_master}}
+
 catchsql {
   DROP TABLE temp_table;
 }
@@ -110,4 +118,3 @@ catchsql {
 }
 
 finish_test
-

test/trigger2.test

@@ -541,7 +541,8 @@ execsql {
 }
 
 # 7. Triggers on views
-execsql {
+do_test trig-7.1 {
+  execsql {
   CREATE TABLE ab(a, b);
   CREATE TABLE cd(c, d);
   INSERT INTO ab VALUES (1, 2);
@@ -579,9 +580,10 @@ execsql {
     INSERT INTO tlog VALUES(NULL, 
 	0, 0, 0, 0, new.a, new.b, new.c, new.d);
    END;
-}
+  }
+} {}
 
-do_test trig-7 {
+do_test trig-7.2 {
   execsql {
     UPDATE abcd SET a = 100, b = 5*5 WHERE a = 1;
     DELETE FROM abcd WHERE a = 1;
@@ -594,4 +596,3 @@ do_test trig-7 {
  5 0 0 0 0 10 20 30 40 6 0 0 0 0 10 20 30 40 ]
 
 finish_test
-