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Overview
| Comment: | Fix a problem in the zipfile module causing it to generate incorrect checksums. Remove the ability to insert compressed data into a zip archive. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | b0b7d0363acf38c2178e2d3041d8ce2a |
| User & Date: | dan 2018-01-15 19:00:35 |
Context
|
2018-01-16
| ||
| 02:38 | Disable the ".archive" command tests in shell8.test if the CLI is compiled without ZLIB support. check-in: ce8bfe6c user: drh tags: trunk | |
|
2018-01-15
| ||
| 21:59 | Merge the enhancements associated with the first 3.22.0 beta. check-in: c9d2ec51 user: drh tags: apple-osx | |
| 19:00 | Fix a problem in the zipfile module causing it to generate incorrect checksums. Remove the ability to insert compressed data into a zip archive. check-in: b0b7d036 user: dan tags: trunk | |
| 15:49 | Fix a zipfile problem with extracting zero length files compressed using deflate. check-in: cf640872 user: dan tags: trunk | |
Changes
Changes to ext/misc/zipfile.c.
801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 ... 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 ... 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 ... 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 ... 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 .... 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 .... 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 .... 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 .... 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 .... 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 .... 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 |
static int zipfileColumn(
sqlite3_vtab_cursor *cur, /* The cursor */
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */
int i /* Which column to return */
){
ZipfileCsr *pCsr = (ZipfileCsr*)cur;
int rc = SQLITE_OK;
if( i>=3 && sqlite3_vtab_nochange(ctx) ){
return SQLITE_OK;
}
switch( i ){
case 0: /* name */
sqlite3_result_text(ctx, pCsr->cds.zFile, -1, SQLITE_TRANSIENT);
break;
case 1: /* mode */
/* TODO: Whether or not the following is correct surely depends on
** the platform on which the archive was created. */
................................................................................
sqlite3_result_int64(ctx, pCsr->mTime);
}else{
sqlite3_result_int64(ctx, zipfileMtime(pCsr));
}
break;
}
case 3: { /* sz */
sqlite3_result_int64(ctx, pCsr->cds.szUncompressed);
break;
}
case 4: /* rawdata */
case 5: { /* data */
if( i==4 || pCsr->cds.iCompression==0 || pCsr->cds.iCompression==8 ){
int sz = pCsr->cds.szCompressed;
int szFinal = pCsr->cds.szUncompressed;
if( szFinal>0 ){
u8 *aBuf = sqlite3_malloc(sz);
if( aBuf==0 ){
................................................................................
sqlite3_result_int(ctx, pCsr->cds.iCompression);
break;
case 7: /* z */
sqlite3_result_int64(ctx, pCsr->iId);
break;
}
return SQLITE_OK;
}
/*
** Return the rowid for the current row.
*/
static int zipfileRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
assert( 0 );
................................................................................
int nRead; /* Bytes to read from file */
i64 iOff; /* Offset to read from */
int rc;
fseek(pFile, 0, SEEK_END);
szFile = (i64)ftell(pFile);
if( szFile==0 ){
return SQLITE_EMPTY;
}
nRead = (int)(MIN(szFile, ZIPFILE_BUFFER_SIZE));
iOff = szFile - nRead;
rc = zipfileReadData(pFile, aRead, nRead, iOff, &pTab->base.zErrMsg);
if( rc==SQLITE_OK ){
int i;
................................................................................
pCsr->pFile = fopen(zFile, "rb");
if( pCsr->pFile==0 ){
zipfileSetErrmsg(pCsr, "cannot open file: %s", zFile);
rc = SQLITE_ERROR;
}else{
rc = zipfileReadEOCD(pTab, pCsr->pFile, &pCsr->eocd);
if( rc==SQLITE_OK ){
pCsr->iNextOff = pCsr->eocd.iOffset;
rc = zipfileNext(cur);
}else if( rc==SQLITE_EMPTY ){
rc = SQLITE_OK;
pCsr->bEof = 1;
}
}
}else{
ZipfileEntry e;
memset(&e, 0, sizeof(e));
e.pNext = pTab->pFirstEntry;
pCsr->pCurrent = &e;
................................................................................
}
static int zipfileLoadDirectory(ZipfileTab *pTab){
ZipfileEOCD eocd;
int rc;
rc = zipfileReadEOCD(pTab, pTab->pWriteFd, &eocd);
if( rc==SQLITE_OK ){
int i;
int iOff = 0;
u8 *aBuf = sqlite3_malloc(eocd.nSize);
if( aBuf==0 ){
rc = SQLITE_NOMEM;
}else{
rc = zipfileReadData(
................................................................................
zipfileAddEntry(pTab, 0, pNew);
}
iOff += ZIPFILE_CDS_FIXED_SZ+nFile+nExtra+nComment;
}
sqlite3_free(aBuf);
}else if( rc==SQLITE_EMPTY ){
rc = SQLITE_OK;
}
return rc;
}
static ZipfileEntry *zipfileNewEntry(
ZipfileCDS *pCds, /* Values for fixed size part of CDS */
................................................................................
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 */
ZipfileCDS cds; /* New Central Directory Structure entry */
ZipfileEntry *pOld = 0;
int bIsDir = 0;
assert( pTab->zFile );
assert( pTab->pWriteFd );
if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){
const char *zDelete = (const char*)sqlite3_value_text(apVal[0]);
int nDelete = (int)strlen(zDelete);
................................................................................
break;
}
assert( pOld->pNext );
}
if( nVal==1 ) return SQLITE_OK;
}
if( sqlite3_value_nochange(apVal[5]) && sqlite3_value_nochange(apVal[6])
&& sqlite3_value_nochange(apVal[7]) && sqlite3_value_nochange(apVal[8])
){
/* Reuse the data from the existing entry. */
FILE *pFile = pTab->pWriteFd;
zipfileReadCDS(pOld->aCdsEntry, &cds);
bIsDir = ((cds.iExternalAttr>>16) & S_IFDIR) ? 1 : 0;
sz = cds.szUncompressed;
iMethod = cds.iCompression;
if( sz>0 ){
char **pzErr = &pTab->base.zErrMsg;
ZipfileLFH lfh;
rc = zipfileReadLFH(pFile, cds.iOffset, pTab->aBuffer, &lfh, pzErr);
if( rc==SQLITE_OK ){
nData = lfh.szCompressed;
pData = pFree = sqlite3_malloc(nData);
if( pFree==NULL ){
rc = SQLITE_NOMEM;
}else{
i64 iRead = cds.iOffset + ZIPFILE_LFH_FIXED_SZ + lfh.nFile+lfh.nExtra;
rc = zipfileReadData(pFile, pFree, nData, iRead, pzErr);
}
}
}
}else{
int mNull;
mNull = (sqlite3_value_type(apVal[5])==SQLITE_NULL ? 0x0 : 0x8) /* sz */
+ (sqlite3_value_type(apVal[6])==SQLITE_NULL ? 0x0 : 0x4) /* rawdata */
+ (sqlite3_value_type(apVal[7])==SQLITE_NULL ? 0x0 : 0x2) /* data */
+ (sqlite3_value_type(apVal[8])==SQLITE_NULL ? 0x0 : 0x1); /* method */
if( mNull==0x00 ){
/* All four are NULL - this must be a directory */
bIsDir = 1;
}
else if( mNull==0x2 || mNull==0x3 ){
/* Value specified for "data", and possibly "method". This must be
** a regular file or a symlink. */
const u8 *aIn = sqlite3_value_blob(apVal[7]);
int nIn = sqlite3_value_bytes(apVal[7]);
int bAuto = sqlite3_value_type(apVal[8])==SQLITE_NULL;
iMethod = sqlite3_value_int(apVal[8]);
................................................................................
if( rc==SQLITE_OK ){
if( iMethod || nCmp<nIn ){
iMethod = 8;
pData = pFree;
nData = nCmp;
}
}
}
}
else if( mNull==0x0D ){
/* Values specified for "sz", "rawdata" and "method". In other words,
** pre-compressed data is being inserted. */
pData = sqlite3_value_blob(apVal[6]);
nData = sqlite3_value_bytes(apVal[6]);
sz = sqlite3_value_int(apVal[5]);
iMethod = sqlite3_value_int(apVal[8]);
if( iMethod<0 || iMethod>65535 ){
pTab->base.zErrMsg = sqlite3_mprintf(
"zipfile: invalid compression method: %d", iMethod
);
rc = SQLITE_ERROR;
}
}
else{
rc = SQLITE_CONSTRAINT;
}
}
if( rc==SQLITE_OK ){
rc = zipfileGetMode(pTab, apVal[3],
(bIsDir ? (S_IFDIR + 0755) : (S_IFREG + 0644)), &mode
);
if( rc==SQLITE_OK && (bIsDir == ((mode & S_IFDIR)==0)) ){
................................................................................
/* Create the new CDS record. */
memset(&cds, 0, sizeof(cds));
cds.iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY;
cds.iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED;
cds.flags = ZIPFILE_NEWENTRY_FLAGS;
cds.iCompression = (u16)iMethod;
zipfileMtimeToDos(&cds, (u32)mTime);
cds.crc32 = crc32(0, pData, nData);
cds.szCompressed = nData;
cds.szUncompressed = (u32)sz;
cds.iExternalAttr = (mode<<16);
cds.iOffset = (u32)pTab->szCurrent;
pNew = zipfileNewEntry(&cds, zPath, nPath, (u32)mTime);
if( pNew==0 ){
rc = SQLITE_NOMEM;
|
< < < > | > > | > | > > > | | < < < > | < < > | | > < < < < < < < < < < < < < < < | < < < | | < < < < < > | < < < > < < > > < < < < < < < < < < < < < < < < < | |
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static int zipfileColumn(
sqlite3_vtab_cursor *cur, /* The cursor */
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */
int i /* Which column to return */
){
ZipfileCsr *pCsr = (ZipfileCsr*)cur;
int rc = SQLITE_OK;
switch( i ){
case 0: /* name */
sqlite3_result_text(ctx, pCsr->cds.zFile, -1, SQLITE_TRANSIENT);
break;
case 1: /* mode */
/* TODO: Whether or not the following is correct surely depends on
** the platform on which the archive was created. */
................................................................................
sqlite3_result_int64(ctx, pCsr->mTime);
}else{
sqlite3_result_int64(ctx, zipfileMtime(pCsr));
}
break;
}
case 3: { /* sz */
if( sqlite3_vtab_nochange(ctx)==0 ){
sqlite3_result_int64(ctx, pCsr->cds.szUncompressed);
}
break;
}
case 4: /* rawdata */
if( sqlite3_vtab_nochange(ctx) ) break;
case 5: { /* data */
if( i==4 || pCsr->cds.iCompression==0 || pCsr->cds.iCompression==8 ){
int sz = pCsr->cds.szCompressed;
int szFinal = pCsr->cds.szUncompressed;
if( szFinal>0 ){
u8 *aBuf = sqlite3_malloc(sz);
if( aBuf==0 ){
................................................................................
sqlite3_result_int(ctx, pCsr->cds.iCompression);
break;
case 7: /* z */
sqlite3_result_int64(ctx, pCsr->iId);
break;
}
return rc;
}
/*
** Return the rowid for the current row.
*/
static int zipfileRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
assert( 0 );
................................................................................
int nRead; /* Bytes to read from file */
i64 iOff; /* Offset to read from */
int rc;
fseek(pFile, 0, SEEK_END);
szFile = (i64)ftell(pFile);
if( szFile==0 ){
memset(pEOCD, 0, sizeof(ZipfileEOCD));
return SQLITE_OK;
}
nRead = (int)(MIN(szFile, ZIPFILE_BUFFER_SIZE));
iOff = szFile - nRead;
rc = zipfileReadData(pFile, aRead, nRead, iOff, &pTab->base.zErrMsg);
if( rc==SQLITE_OK ){
int i;
................................................................................
pCsr->pFile = fopen(zFile, "rb");
if( pCsr->pFile==0 ){
zipfileSetErrmsg(pCsr, "cannot open file: %s", zFile);
rc = SQLITE_ERROR;
}else{
rc = zipfileReadEOCD(pTab, pCsr->pFile, &pCsr->eocd);
if( rc==SQLITE_OK ){
if( pCsr->eocd.nEntry==0 ){
pCsr->bEof = 1;
}else{
pCsr->iNextOff = pCsr->eocd.iOffset;
rc = zipfileNext(cur);
}
}
}
}else{
ZipfileEntry e;
memset(&e, 0, sizeof(e));
e.pNext = pTab->pFirstEntry;
pCsr->pCurrent = &e;
................................................................................
}
static int zipfileLoadDirectory(ZipfileTab *pTab){
ZipfileEOCD eocd;
int rc;
rc = zipfileReadEOCD(pTab, pTab->pWriteFd, &eocd);
if( rc==SQLITE_OK && eocd.nEntry>0 ){
int i;
int iOff = 0;
u8 *aBuf = sqlite3_malloc(eocd.nSize);
if( aBuf==0 ){
rc = SQLITE_NOMEM;
}else{
rc = zipfileReadData(
................................................................................
zipfileAddEntry(pTab, 0, pNew);
}
iOff += ZIPFILE_CDS_FIXED_SZ+nFile+nExtra+nComment;
}
sqlite3_free(aBuf);
}
return rc;
}
static ZipfileEntry *zipfileNewEntry(
ZipfileCDS *pCds, /* Values for fixed size part of CDS */
................................................................................
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 */
ZipfileCDS cds; /* New Central Directory Structure entry */
ZipfileEntry *pOld = 0;
int bIsDir = 0;
u32 iCrc32 = 0;
assert( pTab->zFile );
assert( pTab->pWriteFd );
if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){
const char *zDelete = (const char*)sqlite3_value_text(apVal[0]);
int nDelete = (int)strlen(zDelete);
................................................................................
break;
}
assert( pOld->pNext );
}
if( nVal==1 ) return SQLITE_OK;
}
/* Check that "sz" and "rawdata" are both NULL: */
if( sqlite3_value_type(apVal[5])!=SQLITE_NULL
|| sqlite3_value_type(apVal[6])!=SQLITE_NULL
){
rc = SQLITE_CONSTRAINT;
}
if( rc==SQLITE_OK ){
if( sqlite3_value_type(apVal[7])==SQLITE_NULL ){
/* data=NULL. A directory */
bIsDir = 1;
}else{
/* Value specified for "data", and possibly "method". This must be
** a regular file or a symlink. */
const u8 *aIn = sqlite3_value_blob(apVal[7]);
int nIn = sqlite3_value_bytes(apVal[7]);
int bAuto = sqlite3_value_type(apVal[8])==SQLITE_NULL;
iMethod = sqlite3_value_int(apVal[8]);
................................................................................
if( rc==SQLITE_OK ){
if( iMethod || nCmp<nIn ){
iMethod = 8;
pData = pFree;
nData = nCmp;
}
}
iCrc32 = crc32(0, aIn, nIn);
}
}
}
if( rc==SQLITE_OK ){
rc = zipfileGetMode(pTab, apVal[3],
(bIsDir ? (S_IFDIR + 0755) : (S_IFREG + 0644)), &mode
);
if( rc==SQLITE_OK && (bIsDir == ((mode & S_IFDIR)==0)) ){
................................................................................
/* Create the new CDS record. */
memset(&cds, 0, sizeof(cds));
cds.iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY;
cds.iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED;
cds.flags = ZIPFILE_NEWENTRY_FLAGS;
cds.iCompression = (u16)iMethod;
zipfileMtimeToDos(&cds, (u32)mTime);
cds.crc32 = iCrc32;
cds.szCompressed = nData;
cds.szUncompressed = (u32)sz;
cds.iExternalAttr = (mode<<16);
cds.iOffset = (u32)pTab->szCurrent;
pNew = zipfileNewEntry(&cds, zPath, nPath, (u32)mTime);
if( pNew==0 ){
rc = SQLITE_NOMEM;
|
Changes to test/zipfile.test.
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 |
2 mtime {} 0 {} 0
3 sz {} 0 {} 0
4 rawdata {} 0 {} 0
5 data {} 0 {} 0
6 method {} 0 {} 0
}
do_execsql_test 1.1.1 {
INSERT INTO zz(name, mode, mtime, sz, rawdata, method)
VALUES('f.txt', '-rw-r--r--', 1000000000, 5, 'abcde', 0);
}
do_execsql_test 1.1.2 {
INSERT INTO zz(name, mtime, sz, rawdata, method)
VALUES('g.txt', 1000000002, 5, '12345', 0);
}
do_execsql_test 1.2 {
SELECT name, mtime, data FROM zipfile('test.zip')
} {
f.txt 1000000000 abcde
g.txt 1000000002 12345
|
| > > > > > | > > > > | | |
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 |
2 mtime {} 0 {} 0
3 sz {} 0 {} 0
4 rawdata {} 0 {} 0
5 data {} 0 {} 0
6 method {} 0 {} 0
}
do_catchsql_test 1.1.0.1 {
INSERT INTO zz(name, mode, mtime, sz, rawdata, method)
VALUES('f.txt', '-rw-r--r--', 1000000000, 5, 'abcde', 0);
} {1 {constraint failed}}
do_catchsql_test 1.1.0.1 {
INSERT INTO zz(name, mtime, sz, rawdata, method)
VALUES('g.txt', 1000000002, 5, '12345', 0);
} {1 {constraint failed}}
do_execsql_test 1.1.1 {
INSERT INTO zz(name, mode, mtime, data, method)
VALUES('f.txt', '-rw-r--r--', 1000000000, 'abcde', 0);
}
do_execsql_test 1.1.2 {
INSERT INTO zz(name, mode, mtime, data, method)
VALUES('g.txt', NULL, 1000000002, '12345', 0);
}
do_execsql_test 1.2 {
SELECT name, mtime, data FROM zipfile('test.zip')
} {
f.txt 1000000000 abcde
g.txt 1000000002 12345
|