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Overview
| Comment: | Fix handling of "UPDATE OR REPLACE" statements run on zipfile virtual tables. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | testFixes |
| Files: | files | file ages | folders |
| SHA3-256: |
9a5ef341de2bd2fc4657a510f48159f7 |
| User & Date: | dan 2018-03-20 13:26:01 |
Context
|
2018-03-20
| ||
| 16:56 | For 'zipfile', detect attempts to cause a duplicate entry via UPDATE. Also, fix handling of 'UPDATE OR REPLACE' statements run on zipfile virtual tables. Win32 portability fixes to the 'fileio' extension. Miscellaneous test fixes. check-in: b36caeca user: mistachkin tags: trunk | |
| 13:26 | Fix handling of "UPDATE OR REPLACE" statements run on zipfile virtual tables. Closed-Leaf check-in: 9a5ef341 user: dan tags: testFixes | |
| 12:12 | Add a test case for the fix on this branch. check-in: 7834cf6c user: dan tags: testFixes | |
Changes
Changes to ext/misc/zipfile.c.
1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 .... 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 .... 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 .... 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 |
*/
static u32 zipfileGetTime(sqlite3_value *pVal){
if( pVal==0 || sqlite3_value_type(pVal)==SQLITE_NULL ){
return zipfileTime();
}
return (u32)sqlite3_value_int64(pVal);
}
/*
** xUpdate method.
*/
static int zipfileUpdate(
sqlite3_vtab *pVtab,
int nVal,
................................................................................
int nPath = 0; /* strlen(zPath) */
const u8 *pData = 0; /* Pointer to buffer containing content */
int nData = 0; /* Size of pData buffer in bytes */
int iMethod = 0; /* Compression method for new entry */
u8 *pFree = 0; /* Free this */
char *zFree = 0; /* Also free this */
ZipfileEntry *pOld = 0;
int bUpdate = 0; /* True for an update that modifies "name" */
int bIsDir = 0;
u32 iCrc32 = 0;
if( pTab->pWriteFd==0 ){
rc = zipfileBegin(pVtab);
if( rc!=SQLITE_OK ) return rc;
................................................................................
for(p=pTab->pFirstEntry; p; p=p->pNext){
if( zipfileComparePath(p->cds.zFile, zPath, nPath)==0 ){
switch( sqlite3_vtab_on_conflict(pTab->db) ){
case SQLITE_IGNORE: {
goto zipfile_update_done;
}
case SQLITE_REPLACE: {
pOld = p;
break;
}
default: {
zipfileTableErr(pTab, "duplicate name: \"%s\"", zPath);
rc = SQLITE_CONSTRAINT;
break;
}
................................................................................
pNew->mUnixTime = (u32)mTime;
rc = zipfileAppendEntry(pTab, pNew, pData, nData);
zipfileAddEntry(pTab, pOld, pNew);
}
}
}
if( rc==SQLITE_OK && pOld ){
ZipfileEntry **pp;
ZipfileCsr *pCsr;
for(pCsr=pTab->pCsrList; pCsr; pCsr=pCsr->pCsrNext){
if( pCsr->pCurrent==pOld ){
pCsr->pCurrent = pOld->pNext;
pCsr->bNoop = 1;
}
}
for(pp=&pTab->pFirstEntry; (*pp)!=pOld; pp=&((*pp)->pNext));
*pp = (*pp)->pNext;
zipfileEntryFree(pOld);
}
zipfile_update_done:
sqlite3_free(pFree);
sqlite3_free(zFree);
return rc;
}
|
> > > > > > > > > > > > > > | | < | | | | | |
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*/
static u32 zipfileGetTime(sqlite3_value *pVal){
if( pVal==0 || sqlite3_value_type(pVal)==SQLITE_NULL ){
return zipfileTime();
}
return (u32)sqlite3_value_int64(pVal);
}
/*
** Unless it is NULL, entry pOld is currently part of the pTab->pFirstEntry
** linked list. Remove it from the list and free the object.
*/
static void zipfileRemoveEntryFromList(ZipfileTab *pTab, ZipfileEntry *pOld){
if( pOld ){
ZipfileEntry **pp;
for(pp=&pTab->pFirstEntry; (*pp)!=pOld; pp=&((*pp)->pNext));
*pp = (*pp)->pNext;
zipfileEntryFree(pOld);
}
}
/*
** xUpdate method.
*/
static int zipfileUpdate(
sqlite3_vtab *pVtab,
int nVal,
................................................................................
int nPath = 0; /* strlen(zPath) */
const u8 *pData = 0; /* Pointer to buffer containing content */
int nData = 0; /* Size of pData buffer in bytes */
int iMethod = 0; /* Compression method for new entry */
u8 *pFree = 0; /* Free this */
char *zFree = 0; /* Also free this */
ZipfileEntry *pOld = 0;
ZipfileEntry *pOld2 = 0;
int bUpdate = 0; /* True for an update that modifies "name" */
int bIsDir = 0;
u32 iCrc32 = 0;
if( pTab->pWriteFd==0 ){
rc = zipfileBegin(pVtab);
if( rc!=SQLITE_OK ) return rc;
................................................................................
for(p=pTab->pFirstEntry; p; p=p->pNext){
if( zipfileComparePath(p->cds.zFile, zPath, nPath)==0 ){
switch( sqlite3_vtab_on_conflict(pTab->db) ){
case SQLITE_IGNORE: {
goto zipfile_update_done;
}
case SQLITE_REPLACE: {
pOld2 = p;
break;
}
default: {
zipfileTableErr(pTab, "duplicate name: \"%s\"", zPath);
rc = SQLITE_CONSTRAINT;
break;
}
................................................................................
pNew->mUnixTime = (u32)mTime;
rc = zipfileAppendEntry(pTab, pNew, pData, nData);
zipfileAddEntry(pTab, pOld, pNew);
}
}
}
if( rc==SQLITE_OK && (pOld || pOld2) ){
ZipfileCsr *pCsr;
for(pCsr=pTab->pCsrList; pCsr; pCsr=pCsr->pCsrNext){
if( pCsr->pCurrent && (pCsr->pCurrent==pOld || pCsr->pCurrent==pOld2) ){
pCsr->pCurrent = pCsr->pCurrent->pNext;
pCsr->bNoop = 1;
}
}
zipfileRemoveEntryFromList(pTab, pOld);
zipfileRemoveEntryFromList(pTab, pOld2);
}
zipfile_update_done:
sqlite3_free(pFree);
sqlite3_free(zFree);
return rc;
}
|
Changes to test/zipfile2.test.
230 231 232 233 234 235 236 237 238 239 |
CREATE VIRTUAL TABLE temp.zip USING zipfile('test.zip');
INSERT INTO temp.zip (name,data) VALUES ('test','test');
UPDATE temp.zip set name=name||'new' where name='test';
INSERT INTO temp.zip (name,data) VALUES ('test','test');
UPDATE temp.zip set name=name||'new' where name='test';
} {1 {duplicate name: "testnew"}}
finish_test
|
> > > > > > > |
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CREATE VIRTUAL TABLE temp.zip USING zipfile('test.zip');
INSERT INTO temp.zip (name,data) VALUES ('test','test');
UPDATE temp.zip set name=name||'new' where name='test';
INSERT INTO temp.zip (name,data) VALUES ('test','test');
UPDATE temp.zip set name=name||'new' where name='test';
} {1 {duplicate name: "testnew"}}
forcedelete test.zip
do_execsql_test 6.3 {
INSERT INTO temp.zip (name,data) VALUES ('test1','test');
INSERT INTO temp.zip (name,data) VALUES ('test2','test');
UPDATE OR REPLACE zip SET name='test2' WHERE name='test1';
SELECT name FROM zip;
} {test2}
finish_test
|