Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
Comment: | Partial backout of check-in [e0af9a904076]. It turns out we do need some extra space at the end of the record blob as an overrun area to use when decoding a maliciously malformed record. |
---|---|
Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
403b88a894d877b85bcc33133abad06c |
User & Date: | drh 2017-09-22 12:52:31.525 |
Context
2017-09-22
| ||
16:23 | Use the updated Win32 VFS semantics for winOpen from check-in [5d03c738e9] for WinRT, et al, as well. (check-in: 2c03d8b8f0 user: mistachkin tags: trunk) | |
12:52 | Partial backout of check-in [e0af9a904076]. It turns out we do need some extra space at the end of the record blob as an overrun area to use when decoding a maliciously malformed record. (check-in: 403b88a894 user: drh tags: trunk) | |
00:24 | Update the configure script so that it looks for tclsh8.7 ahead of tclsh8.6. (check-in: 0a12915b37 user: drh tags: trunk) | |
2017-09-20
| ||
18:07 | The BLOB returned by sqlite3VdbeMemFromBtree() does not need to be zero-terminated. (check-in: e0af9a9040 user: drh tags: trunk) | |
Changes
Changes to src/vdbemem.c.
︙ | ︙ | |||
1009 1010 1011 1012 1013 1014 1015 | BtCursor *pCur, /* Cursor pointing at record to retrieve. */ u32 offset, /* Offset from the start of data to return bytes from. */ u32 amt, /* Number of bytes to return. */ Mem *pMem /* OUT: Return data in this Mem structure. */ ){ int rc; pMem->flags = MEM_Null; | | > | 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 | BtCursor *pCur, /* Cursor pointing at record to retrieve. */ u32 offset, /* Offset from the start of data to return bytes from. */ u32 amt, /* Number of bytes to return. */ Mem *pMem /* OUT: Return data in this Mem structure. */ ){ int rc; pMem->flags = MEM_Null; if( SQLITE_OK==(rc = sqlite3VdbeMemClearAndResize(pMem, amt+1)) ){ rc = sqlite3BtreePayload(pCur, offset, amt, pMem->z); if( rc==SQLITE_OK ){ pMem->z[amt] = 0; /* Overrun area used when reading malformed records */ pMem->flags = MEM_Blob; pMem->n = (int)amt; }else{ sqlite3VdbeMemRelease(pMem); } } return rc; |
︙ | ︙ |