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feat: Add Sheet Protection for XLS (BIFF8)

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Lucas Picchi 2024-09-09 18:39:25 -03:00 committed by sheetjs
parent 235ed7ccfb
commit 58fe461d34
1 changed files with 56 additions and 0 deletions
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56
bits/78_writebiff.js
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@ -431,8 +431,56 @@ function write_FMTS_biff8(ba, NF/*:?SSFTable*/, opts) {
});
}
function write_ws_protect_biff8(sp) {
/* SheetProtection */
let flags = 0x0000;
[
["objects", false, 0x0001], // fObjects - Bit 0 (Edit objects)
["scenarios", false, 0x0002], // fScenarios - Bit 1 (Edit scenarios)
["formatCells", true, 0x0004], // fFormatCells - Bit 2 (Change cell formatting)
["formatColumns", true, 0x0008], // fFormatColumns - Bit 3 (Change column formatting)
["formatRows", true, 0x0010], // fFormatRows - Bit 4 (Change row formatting)
["insertColumns", true, 0x0020], // fInsertColumns - Bit 5 (Insert columns)
["insertRows", true, 0x0040], // fInsertRows - Bit 6 (Insert rows)
["insertHyperlinks", true, 0x0080], // fInsertHyperlinks - Bit Bit 7 (Insert hyperlinks)
["deleteColumns", true, 0x0100], // fDeleteColumns - Bit 8 (Delete columns)
["deleteRows", true, 0x0200], // fDeleteRows - Bit 9 (Delete rows)
["selectLockedCells", false, 0x0400], // fSelLockedCells - Bit 10 (Select locked cells)
["sort", true, 0x0800], // fSort - Bit 11 (Sort a cell range)
["autoFilter", true, 0x1000], // fAutoFilter - Bit 12 (Edit auto filters)
["pivotTables", true, 0x2000], // fPivotTables - Bit 13 (Edit PivotTables)
["selectUnlockedCells", false, 0x4000] // fSelUnlockedCells - Bit 14 (Select unlocked cells)
].forEach(function(n) {
if(n[1]) flags |= sp[n[0]] != null && !sp[n[0]] ? n[2] : 0x0000
else flags |= sp[n[0]] != null && sp[n[0]] ? 0x0000 : n[2];
});
/* [MS-XLS] 2.4.112 */
const featHdr = new_buf(23);
/* [MS-XLS] 2.5.135 */
featHdr.write_shift(2, 0x0867)
featHdr.write_shift(2, 0x0000);
featHdr.write_shift(4, 0x00000000)
featHdr.write_shift(4, 0x00000000)
/* [MS-XLS] 2.5.237 */
featHdr.write_shift(2, 0x0002); // SharedFeatureType ISFPROTECTION
/* Reserved byte */
featHdr.write_shift(1, 0x01);
/* cbHdrData */
featHdr.write_shift(4, 0xffffffff);
/* [MS-XLS] 2.5.104 */
featHdr.write_shift(4, flags)
return featHdr
}
function write_FEAT(ba, ws) {
/* [MS-XLS] 2.4.112 */
/* ISFPROTECTION */
if(ws['!protect']){
write_biff_rec(ba, 0x0867 /* FeatHdr */, write_ws_protect_biff8(ws['!protect']))
}
/* ISFFEC2 */
var o = new_buf(19);
o.write_shift(4, 0x867); o.write_shift(4, 0); o.write_shift(4, 0);
o.write_shift(2, 3); o.write_shift(1, 1); o.write_shift(4, 0);
@ -537,6 +585,14 @@ function write_ws_biff8(idx/*:number*/, opts, wb/*:Workbook*/) {
/* Footer (string) */
write_biff_rec(ba, 0x0083 /* HCenter */, writebool(false));
write_biff_rec(ba, 0x0084 /* VCenter */, writebool(false));
/* PROTECTION */
if(ws['!protect']){
const sp = ws['!protect']
/* [MS-XLS] 2.4.207 */
write_biff_rec(ba, 0x0012 /* Protect */, writeuint16(1));
/* [MS-XLS] 2.4.191 */
if(sp.password) write_biff_rec(ba, 0x0013 /* Password */, writeuint16(crypto_CreatePasswordVerifier_Method1(sp.password)));
}
/* ... */
if(b8) write_ws_cols_biff8(ba, ws["!cols"]);
/* ... */