diff options
Diffstat (limited to 'vendor/github.com/ncruces/go-sqlite3/vfs/cksm.go')
| -rw-r--r-- | vendor/github.com/ncruces/go-sqlite3/vfs/cksm.go | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/vendor/github.com/ncruces/go-sqlite3/vfs/cksm.go b/vendor/github.com/ncruces/go-sqlite3/vfs/cksm.go index 39493df99..041defec3 100644 --- a/vendor/github.com/ncruces/go-sqlite3/vfs/cksm.go +++ b/vendor/github.com/ncruces/go-sqlite3/vfs/cksm.go @@ -47,11 +47,12 @@ type cksmFlags struct { func (c cksmFile) ReadAt(p []byte, off int64) (n int, err error) { n, err = c.File.ReadAt(p, off) + p = p[:n] // SQLite is reading the header of a database file. if c.isDB && off == 0 && len(p) >= 100 && bytes.HasPrefix(p, []byte("SQLite format 3\000")) { - c.init(p) + c.init((*[100]byte)(p)) } // Verify checksums. @@ -69,7 +70,7 @@ func (c cksmFile) WriteAt(p []byte, off int64) (n int, err error) { // SQLite is writing the first page of a database file. if c.isDB && off == 0 && len(p) >= 100 && bytes.HasPrefix(p, []byte("SQLite format 3\000")) { - c.init(p) + c.init((*[100]byte)(p)) } // Compute checksums. @@ -122,12 +123,16 @@ func (c cksmFile) fileControl(ctx context.Context, mod api.Module, op _FcntlOpco return vfsFileControlImpl(ctx, mod, c.File, op, pArg) } -func (f *cksmFlags) init(header []byte) { +func (f *cksmFlags) init(header *[100]byte) { f.pageSize = 256 * int(binary.LittleEndian.Uint16(header[16:18])) if r := header[20] == 8; r != f.computeCksm { f.computeCksm = r f.verifyCksm = r } + if !sql3util.ValidPageSize(f.pageSize) { + f.computeCksm = false + f.verifyCksm = false + } } func cksmCompute(a []byte) (cksm [8]byte) { |