Prevent an fts5 table from being its own content table, or part of a view that is the content table.

FossilOrigin-Name: b6d52c9364767ff4ab7279ae981afb97799299dcfaf38a0110c40ca82c72a825

ext/fts5/fts5Int.h

@@ -178,6 +178,7 @@ struct Fts5Config {
   char *zContentExprlist;
   Fts5Tokenizer *pTok;
   fts5_tokenizer *pTokApi;
+  int bLock;                      /* True when table is preparing statement */
 
   /* Values loaded from the %_config table */
   int iCookie;                    /* Incremented when %_config is modified */

ext/fts5/fts5_main.c

@@ -536,6 +536,13 @@ static int fts5BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){
   assert( SQLITE_INDEX_CONSTRAINT_GE<SQLITE_INDEX_CONSTRAINT_MATCH );
   assert( SQLITE_INDEX_CONSTRAINT_LE<SQLITE_INDEX_CONSTRAINT_MATCH );
 
+  if( pConfig->bLock ){
+    pTab->base.zErrMsg = sqlite3_mprintf(
+        "recursively defined fts5 content table"
+    );
+    return SQLITE_ERROR;
+  }
+
   /* Set idxFlags flags for all WHERE clause terms that will be used. */
   for(i=0; i<pInfo->nConstraint; i++){
     struct sqlite3_index_constraint *p = &pInfo->aConstraint[i];

ext/fts5/fts5_storage.c

@@ -138,7 +138,9 @@ static int fts5StorageGetStmt(
     }else{
       int f = SQLITE_PREPARE_PERSISTENT;
       if( eStmt>FTS5_STMT_LOOKUP ) f |= SQLITE_PREPARE_NO_VTAB;
+      p->pConfig->bLock++;
       rc = sqlite3_prepare_v3(pC->db, zSql, -1, f, &p->aStmt[eStmt], 0);
+      p->pConfig->bLock--;
       sqlite3_free(zSql);
       if( rc!=SQLITE_OK && pzErrMsg ){
         *pzErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pC->db));

ext/fts5/test/fts5content.test

@@ -253,5 +253,20 @@ do_execsql_test 6.2 {
   SELECT name FROM sqlite_master;
 } {}
 
+#---------------------------------------------------------------------------
+# Check that an fts5 table cannot be its own content table.
+#
+reset_db
+do_execsql_test 7.1 {
+  CREATE VIRTUAL TABLE t1 USING fts5(a, c=t1 );
+  INSERT INTO t1( a ) VALUES('abc');
+}
+do_catchsql_test 7.2 { 
+  SELECT * FROM t1; 
+} {1 {recursively defined fts5 content table}}
+do_catchsql_test 7.3 { 
+  SELECT * FROM t1('abc'); 
+} {1 {recursively defined fts5 content table}}
 
 finish_test
+

manifest

@@ -1,5 +1,5 @@
-C Stregthen\san\sassert()\sin\sthe\sWHERE\sclause\scode\sgenerator\sfor\sthe\smin/max\noptimization.
-D 2019-08-03T19:06:18.863
+C Prevent\san\sfts5\stable\sfrom\sbeing\sits\sown\scontent\stable,\sor\spart\sof\sa\sview\sthat\sis\sthe\scontent\stable.
+D 2019-08-05T12:55:56.569
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -110,15 +110,15 @@ F ext/fts3/unicode/mkunicode.tcl bf7fcaa6d68e6d38223467983785d054f1cff4d9e3905dd
 F ext/fts3/unicode/parseunicode.tcl a981bd6466d12dd17967515801c3ff23f74a281be1a03cf1e6f52a6959fc77eb
 F ext/fts5/extract_api_docs.tcl a36e54ec777172ddd3f9a88daf593b00848368e0
 F ext/fts5/fts5.h 7c9da96f2b9dcfa4dd94081fb2d87ec418d8cdb35b25df56756c334b6b558fd7
-F ext/fts5/fts5Int.h 5c26dce0ec9272fca726c6fddb92f634d0c912d4ca170330270d488a94b80416
+F ext/fts5/fts5Int.h d87fb17d12296613cdec2d1f4213ecd8840d3deb34837b6d3889b830d06baac4
 F ext/fts5/fts5_aux.c dcc627d8b6e3fc773db528ff67b39955dab7b51628f9dba8e15849e5bedfd7fa
 F ext/fts5/fts5_buffer.c 5a5fe0159752c0fb0a5a93c722e9db2662822709490769d482b76a6dc8aaca70
 F ext/fts5/fts5_config.c d7523cba5e66da077233c023aecbc3e6a37978ff75a18131c5ab5b1229d5bac7
 F ext/fts5/fts5_expr.c 840c88d55e78083a5e61a35968df877712ae28791b347eced1e98e3b337d2d3c
 F ext/fts5/fts5_hash.c 1cc0095646f5f3b46721aa112fb4f9bf29ae175cb5338f89dcec66ed97acfe75
 F ext/fts5/fts5_index.c cd363c2fa3e626c04a9b7c705ff50222b4cab052704938f6a24881602ed3ed0d
-F ext/fts5/fts5_main.c abd04720e2729ba5bab2648d9d541faab18f45d481ae21fc30f125b55e979d6b
-F ext/fts5/fts5_storage.c b24f6916fcdd68989a549f25962f286bdba9d9d59c7581567a6a0eb647cd07cc
+F ext/fts5/fts5_main.c 346a1ec08caa66f1187f1e0bf12e39e4d24682323b839e8a76ef653b8db8a91d
+F ext/fts5/fts5_storage.c 801b4e3cd33786a60a07b6b01f86d0fbdf7e68325054e08d17176293a8081e99
 F ext/fts5/fts5_tcl.c 39bcbae507f594aad778172fa914cad0f585bf92fd3b078c686e249282db0d95
 F ext/fts5/fts5_test_mi.c 08c11ec968148d4cb4119d96d819f8c1f329812c568bac3684f5464be177d3ee
 F ext/fts5/fts5_test_tok.c f96c6e193c466711d6d7828d5f190407fe7ab897062d371426dd3036f01258e7
@@ -154,7 +154,7 @@ F ext/fts5/test/fts5columnsize.test 45459ce4dd9fd853b6044cdc9674921bff89e3d840f3
 F ext/fts5/test/fts5config.test 60094712debc59286c59aef0e6cf511c37d866802776a825ce437d26afe0817f
 F ext/fts5/test/fts5conflict.test 655925678e630d3cdf145d18725a558971806416f453ac8410ca8c04d934238d
 F ext/fts5/test/fts5connect.test 08030168fc96fc278fa81f28654fb7e90566f33aff269c073e19b3ae9126b2f4
-F ext/fts5/test/fts5content.test 688d5ac7af194ebc67495daea76a69e3cd5480122c2320e72d41241b423b4116
+F ext/fts5/test/fts5content.test 9517cc527a8e8a33949652d5c7b5e251f8c3d5ae3f23f01d4320e30f29a0336b
 F ext/fts5/test/fts5corrupt.test 77ae6f41a7eba10620efb921cf7dbe218b0ef232b04519deb43581cb17a57ebe
 F ext/fts5/test/fts5corrupt2.test 7453752ba12ce91690c469a6449d412561cc604b1dec994e16ab132952e7805f
 F ext/fts5/test/fts5corrupt3.test 1f36c04fdd717f7d44a0addcdad0f5e54a5a403eab8a25426b069757830682ee
@@ -1838,7 +1838,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P d465c3eef458c851d97eea6e4117247d9c69386b276168080dbff7bb64070c93
-R 8f097cfa3ce30475d286df29d894ccc6
-U drh
-Z 75bab5a01b9371fe4c3ad256ed32bece
+P 1bd4b97d6405c9b093f3bfed914c56088ee13e4a2242be62b74a86660f74f533
+R e92ea622f14cc1b4c90fee388e599b52
+U dan
+Z c8a1ea238b46dd4eaa7276d7b60e185f

manifest.uuid

@@ -1 +1 @@
-1bd4b97d6405c9b093f3bfed914c56088ee13e4a2242be62b74a86660f74f533
+b6d52c9364767ff4ab7279ae981afb97799299dcfaf38a0110c40ca82c72a825