mirror of https://github.com/sqlite/sqlite
Test cases and minor changes to make fts3 more robust in the face of a corrupt database.
FossilOrigin-Name: b770290561f5450e4d985ca0050ef5eb01657c80
This commit is contained in:
dan
parent
797f3ee87c
commit
cfddb09e3b
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@ -1001,9 +1001,22 @@ static int fts3ScanInteriorNode(
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/* Skip over the 'height' varint that occurs at the start of every
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** interior node. Then load the blockid of the left-child of the b-tree
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** node into variable iChild. */
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** node into variable iChild.
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**
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** Even if the data structure on disk is corrupted, this (reading two
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** varints from the buffer) does not risk an overread. If zNode is a
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** root node, then the buffer comes from a SELECT statement. SQLite does
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** not make this guarantee explicitly, but in practice there are always
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** either more than 20 bytes of allocated space following the nNode bytes of
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** contents, or two zero bytes. Or, if the node is read from the %_segments
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** table, then there are always 20 bytes of zeroed padding following the
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** nNode bytes of content (see sqlite3Fts3ReadBlock() for details).
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*/
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zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
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zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
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if( zCsr>=zEnd ){
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return SQLITE_CORRUPT;
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}
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while( zCsr<zEnd && (piFirst || piLast) ){
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int cmp; /* memcmp() result */
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@ -1018,13 +1031,18 @@ static int fts3ScanInteriorNode(
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}
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isFirstTerm = 0;
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zCsr += sqlite3Fts3GetVarint32(zCsr, &nSuffix);
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if( nPrefix<0 || nSuffix<0 || &zCsr[nSuffix]>zEnd ){
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rc = SQLITE_CORRUPT;
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goto finish_scan;
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}
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if( nPrefix+nSuffix>nAlloc ){
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char *zNew;
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nAlloc = (nPrefix+nSuffix) * 2;
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zNew = (char *)sqlite3_realloc(zBuffer, nAlloc);
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if( !zNew ){
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sqlite3_free(zBuffer);
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return SQLITE_NOMEM;
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rc = SQLITE_NOMEM;
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goto finish_scan;
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}
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zBuffer = zNew;
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}
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@ -1058,6 +1076,7 @@ static int fts3ScanInteriorNode(
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if( piFirst ) *piFirst = iChild;
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if( piLast ) *piLast = iChild;
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finish_scan:
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sqlite3_free(zBuffer);
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return rc;
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}
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@ -836,6 +836,7 @@ int sqlite3Fts3ReadBlock(
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rc = SQLITE_NOMEM;
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}else{
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rc = sqlite3_blob_read(p->pSegments, aByte, nByte, 0);
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memset(&aByte[nByte], 0, FTS3_NODE_PADDING);
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if( rc!=SQLITE_OK ){
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sqlite3_free(aByte);
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aByte = 0;
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@ -1143,6 +1144,7 @@ int sqlite3Fts3SegReaderNew(
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pReader->aNode = (char *)&pReader[1];
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pReader->nNode = nRoot;
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memcpy(pReader->aNode, zRoot, nRoot);
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memset(&pReader->aNode[nRoot], 0, FTS3_NODE_PADDING);
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}else{
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pReader->iCurrentBlock = iStartLeaf-1;
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}
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17
manifest
17
manifest
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@ -1,5 +1,5 @@
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C Add\sextra\stest\scases\sand\schanges\sto\sfts3\sto\savoid\scrashing\son\sa\scorrupt\sdatabase.
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D 2010-10-29T18:45:11
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C Test\scases\sand\sminor\schanges\sto\smake\sfts3\smore\srobust\sin\sthe\sface\sof\sa\scorrupt\sdatabase.
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D 2010-10-30T15:21:13
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in 2c8cefd962eca0147132c7cf9eaa4bb24c656f3f
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -61,7 +61,7 @@ F ext/fts2/mkfts2amal.tcl 974d5d438cb3f7c4a652639262f82418c1e4cff0
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F ext/fts3/README.syntax a19711dc5458c20734b8e485e75fb1981ec2427a
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F ext/fts3/README.tokenizers 998756696647400de63d5ba60e9655036cb966e9
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F ext/fts3/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
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F ext/fts3/fts3.c e78273903ca271d90fe30f32832de18b730e5818
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F ext/fts3/fts3.c 48c37f640fb5837dcdbd04ef2d51ec40c8637503
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F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe
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F ext/fts3/fts3Int.h 819bc2661c8f3b46221d146f1810dc6741819f55
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F ext/fts3/fts3_expr.c ee48b9278b8b2432a05a03320fbcacba151dbaa5
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@ -73,7 +73,7 @@ F ext/fts3/fts3_snippet.c 300c12b7f0a2a6ae0491bb2d00e2d5ff9c28f685
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F ext/fts3/fts3_tokenizer.c b4f2d01c24573852755bc92864816785dae39318
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F ext/fts3/fts3_tokenizer.h 13ffd9fcb397fec32a05ef5cd9e0fa659bf3dbd3
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F ext/fts3/fts3_tokenizer1.c 6e5cbaa588924ac578263a598e4fb9f5c9bb179d
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F ext/fts3/fts3_write.c f2f5caed5ebaff2f6f00724063b415a27b02269d
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F ext/fts3/fts3_write.c 01478ee63bb321f240bb5565d9e36e8641b33928
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F ext/fts3/fts3speed.tcl b54caf6a18d38174f1a6e84219950d85e98bb1e9
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F ext/fts3/mkfts3amal.tcl 252ecb7fe6467854f2aa237bf2c390b74e71f100
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F ext/icu/README.txt bf8461d8cdc6b8f514c080e4e10dc3b2bbdfefa9
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@ -431,7 +431,8 @@ F test/fts3ao.test b83f99f70e9eec85f27d75801a974b3f820e01f9
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F test/fts3atoken.test 25c2070e1e8755d414bf9c8200427b277a9f99fa
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F test/fts3b.test e93bbb653e52afde110ad53bbd793f14fe7a8984
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F test/fts3c.test fc723a9cf10b397fdfc2b32e73c53c8b1ec02958
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F test/fts3corrupt.test 33136f735b072c30cb81506a778c553e1dbfee24
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F test/fts3corrupt.test d874ba27975aa8e5514bf58bf97b473404de0dbb
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F test/fts3corrupt2.test 6d96efae2f8a6af3eeaf283aba437e6d0e5447ba
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F test/fts3cov.test e0fb00d8b715ddae4a94c305992dfc3ef70353d7
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F test/fts3d.test 95fb3c862cbc4297c93fceb9a635543744e9ef52
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F test/fts3defer.test eab4f24c8402fb4e1e6aad44bcdfbe5bf42160b2
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@ -880,7 +881,7 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
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F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
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F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
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F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
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P a4691563dd2b3e5e8474467b0c5c46fb26351b77
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R bff2ac7c319afc7951a784339e29e0c8
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P 252f0e457d3e33404df87d3e6c44ede61b78319c
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R d97d2b9a5a48009c2b60d357c8a6ddd6
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U dan
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Z 67ba15939e37c99dcbd00f2c2cfc47a0
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Z 94cd3ec190765a4d38e20b4294999730
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@ -1 +1 @@
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252f0e457d3e33404df87d3e6c44ede61b78319c
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b770290561f5450e4d985ca0050ef5eb01657c80
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@ -88,8 +88,48 @@ do_catchsql_test 3.2 {
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} {1 {database disk image is malformed}}
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do_execsql_test 4.0 {
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DROP TABLE t1;
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CREATE VIRTUAL TABLE t1 USING fts3;
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INSERT INTO t1(t1) VALUES('nodesize=24');
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}
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do_test fts3corrupt-4.1 {
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execsql BEGIN
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foreach s {
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"amxtvoo adqwroyhz auq aithtir avniqnuynvf axp ahibayfynig agbicpm"
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"ajdtebs anteaxr aieynenwmd awpl alo akxcrwow aoxftge aoqvgul"
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"amcfvdr auz apu aebelm ahuxyz aqc asyafdb agulvhvqu"
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"apepwfyz azkhdvkw aenyelxzbk aslnitbyet aycdsdcpgr aqzzdbc agfi axnypydou"
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"aaqrzzcm apcxdxo atumltzj aevvivo aodknoft aqoyytoz alobx apldt"
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} {
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execsql { INSERT INTO t1 VALUES($s) }
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}
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execsql COMMIT
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} {}
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do_catchsql_test 4.2 {
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UPDATE t1_segdir SET root = X'FFFFFFFFFFFFFFFF';
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SELECT rowid FROM t1 WHERE t1 MATCH 'world';
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} {1 {database disk image is malformed}}
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set blob [binary format cca*cca*cca*cca*cca*cca*cca*cca*cca*cca*a* \
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22 120 [string repeat a 120] \
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22 120 [string repeat b 120] \
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22 120 [string repeat c 120] \
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22 120 [string repeat d 120] \
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22 120 [string repeat e 120] \
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22 120 [string repeat f 120] \
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22 120 [string repeat g 120] \
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22 120 [string repeat h 120] \
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22 120 [string repeat i 120] \
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22 120 [string repeat j 120] \
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"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
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]
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do_catchsql_test 4.3 {
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UPDATE t1_segdir SET root = $blob;
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SELECT rowid FROM t1 WHERE t1 MATCH 'world';
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} {1 {database disk image is malformed}}
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finish_test
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@ -0,0 +1,110 @@
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# 2010 October 30
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# Test that the FTS3 extension does not crash when it encounters a
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# corrupt data structure on disk.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# If SQLITE_ENABLE_FTS3 is not defined, omit this file.
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ifcapable !fts3 { finish_test ; return }
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set ::testprefix fts3corrupt2
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set data [list]
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lappend data {*}{
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"amxtvoo adqwroyhz auq aithtir avniqnuynvf axp ahibayfynig agbicpm"
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"ajdtebs anteaxr aieynenwmd awpl alo akxcrwow aoxftge aoqvgul"
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"amcfvdr auz apu aebelm ahuxyz aqc asyafdb agulvhvqu"
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"apepwfyz azkhdvkw aenyelxzbk aslnitbyet aycdsdcpgr aqzzdbc agfi axnypydou"
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"aaqrzzcm apcxdxo atumltzj aevvivo aodknoft aqoyytoz alobx apldt"
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"adjllxlhnmj aiuhvuj adwppceuht atvj azrsam ahkjqdhny audlqxr aotgcd"
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"aira azflsceos awj auzbobfkc awmezplr aeh awec ahndxlmv"
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"aydwnied alk auoap agihyqeix aymqxzajnl aydwnied aojkarx agbo"
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"ahajsmcl anvx amdhjm aoptsj agugzjjm apkevm acnj acjg"
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"amwtkw aogttbykvt aubwrfqnbjf ajow agsj aerkqzjdqst anenlvbalkn arfajzzgckx"
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"adqqqofkmz amjpavjuhw aqgehgnb awvvxlbtqzn agstqko akmkzehyh atagzey agwja"
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"amag ahe autkllywhr avnk atmt akn anvdh aixfrv"
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"aqdyerbws avefykly awl azaduojgzo anxfsmw axpt abgbvk ati"
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"attyqkwz aiweypiczul afy asitaqbczhh aitxisizpv auhviq aibql ajfqc"
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"aylzprtmta aiuemihqrpi awluvgsw ampbuy axlifpzfqr aems aoaxwads apianfn"
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"aodrkijelq acdb aaserrdxm aqyasgofqu aevvivo afi apmwu aeoqysl"
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"amqnk ankaotm ayfy ajcupeeoc advcbukan aucahlwnyk adbfyo azqjpeant"
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"afczpp asqrs ahslvda akhlf aiqgdp atyd aznuglxqbrg awirndrh"
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"aqhiajp amxeazb asxuehg akod axvolvsp agcz asmovmohy acmqa"
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"avvomv aafms ashuaec arevx audtq alrwqhjvao avgsgpg ajbrctpsel"
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"atxoirr ayopboobqdu ajunntua arh aernimxid aipljda aglo aefk"
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"aonxf acmnnkna abgviaswe aulvcbv axp apemgakpzo aibql acioaid"
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"axo alrwqhjvao ayqounftdzl azmoakdyh apajze ajk artvy apxiamy"
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"ayjafsraz addjj agsj asejtziqws acatvhegu aoxdjqblsvv aekdmmbs aaobe"
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"abjjvzubkwt alczv ati awz auyxgcxeb aymjoym anqoukprtyt atwfhpmbooh"
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"ajfqz aethlgir aclcx aowlyvetby aproqm afjlqtkv anebfy akzrcpfrrvw"
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"aoledfotm aiwlfm aeejlaej anz abgbvk aktfn aayoh anpywgdvgz"
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"acvmldguld asdvz aqb aeomsyzyu aggylhprbdz asrfkwz auipybpsn agsnszzfb"
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}
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do_test fts3corrupt2-1.0 {
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execsql BEGIN
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execsql { CREATE VIRTUAL TABLE t2 USING FTS3(a, b); }
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execsql { INSERT INTO t2(t2) VALUES('nodesize=32') }
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foreach d $data {
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execsql { INSERT INTO t2 VALUES($d, $d) }
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}
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execsql COMMIT
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execsql { SELECT count(*) FROM t2_segments }
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} {163}
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proc set_byte {blob byte val} {
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binary format a*ca* \
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[string range $blob 0 [expr $byte-1]] \
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$val \
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[string range $blob [expr $byte+1] end] \
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}
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set tn 0
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set c 256
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foreach {rowid sz blob} [
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db eval {SELECT rowid, length(block), block FROM t2_segments}
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] {
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incr tn
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set c [expr (($c+255)%256)]
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for {set i 0} {$i < $sz} {incr i} {
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set b2 [set_byte $blob $i $c]
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execsql { UPDATE t2_segments SET block = $b2 WHERE rowid = $rowid }
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do_test fts3corrupt2-1.$tn.$i {
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catchsql { SELECT * FROM t2 WHERE t2 MATCH 'a*' }
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set {} {}
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} {}
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}
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execsql { UPDATE t2_segments SET block = $blob WHERE rowid = $rowid }
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}
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foreach c {50 100 150 200 250} {
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foreach {rowid sz blob} [
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db eval {SELECT rowid, length(root), root FROM t2_segdir}
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] {
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incr tn
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for {set i 0} {$i < $sz} {incr i} {
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set b2 [set_byte $blob $i $c]
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execsql { UPDATE t2_segdir SET root = $b2 WHERE rowid = $rowid }
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do_test fts3corrupt2-2.$c.$tn.$i {
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catchsql { SELECT * FROM t2 WHERE t2 MATCH 'a*' }
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set {} {}
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} {}
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}
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execsql { UPDATE t2_segdir SET root = $blob WHERE rowid = $rowid }
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}
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}
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finish_test
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