forked from sheetjs/sheetjs
441 lines
16 KiB
JavaScript
441 lines
16 KiB
JavaScript
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/* [MS-DTYP] 2.3.3 FILETIME */
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/* [MS-OLEDS] 2.1.3 FILETIME (Packet Version) */
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/* [MS-OLEPS] 2.8 FILETIME (Packet Version) */
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function parse_FILETIME(blob) {
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var dwLowDateTime = blob.read_shift(4), dwHighDateTime = blob.read_shift(4);
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return new Date(((dwHighDateTime/1e7*Math.pow(2,32) + dwLowDateTime/1e7) - 11644473600)*1000).toISOString().replace(/\.000/,"");
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}
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/* [MS-OSHARED] 2.3.3.1.4 Lpstr */
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function parse_lpstr(blob, type, pad) {
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var str = blob.read_shift(0, 'lpstr');
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if(pad) blob.l += (4 - ((str.length+1) & 3)) & 3;
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return str;
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}
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/* [MS-OSHARED] 2.3.3.1.6 Lpwstr */
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function parse_lpwstr(blob, type, pad) {
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var str = blob.read_shift(0, 'lpwstr');
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if(pad) blob.l += (4 - ((str.length+1) & 3)) & 3;
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return str;
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}
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/* [MS-OSHARED] 2.3.3.1.11 VtString */
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/* [MS-OSHARED] 2.3.3.1.12 VtUnalignedString */
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function parse_VtStringBase(blob, stringType, pad) {
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if(stringType === 0x1F /*VT_LPWSTR*/) return parse_lpwstr(blob);
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return parse_lpstr(blob, stringType, pad);
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}
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function parse_VtString(blob, t, pad) { return parse_VtStringBase(blob, t, pad === false ? 0: 4); }
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function parse_VtUnalignedString(blob, t) { if(!t) throw new Error("dafuq?"); return parse_VtStringBase(blob, t, 0); }
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/* [MS-OSHARED] 2.3.3.1.9 VtVecUnalignedLpstrValue */
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function parse_VtVecUnalignedLpstrValue(blob) {
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var length = blob.read_shift(4);
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var ret = [];
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for(var i = 0; i != length; ++i) ret[i] = blob.read_shift(0, 'lpstr');
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return ret;
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}
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/* [MS-OSHARED] 2.3.3.1.10 VtVecUnalignedLpstr */
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function parse_VtVecUnalignedLpstr(blob) {
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return parse_VtVecUnalignedLpstrValue(blob);
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}
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/* [MS-OSHARED] 2.3.3.1.13 VtHeadingPair */
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function parse_VtHeadingPair(blob) {
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var headingString = parse_TypedPropertyValue(blob, VT_USTR);
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var headerParts = parse_TypedPropertyValue(blob, VT_I4);
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return [headingString, headerParts];
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}
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/* [MS-OSHARED] 2.3.3.1.14 VtVecHeadingPairValue */
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function parse_VtVecHeadingPairValue(blob) {
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var cElements = blob.read_shift(4);
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var out = [];
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for(var i = 0; i != cElements / 2; ++i) out.push(parse_VtHeadingPair(blob));
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return out;
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}
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/* [MS-OSHARED] 2.3.3.1.15 VtVecHeadingPair */
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function parse_VtVecHeadingPair(blob) {
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// NOTE: When invoked, wType & padding were already consumed
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return parse_VtVecHeadingPairValue(blob);
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}
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/* [MS-OLEPS] 2.18.1 Dictionary (uses 2.17, 2.16) */
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function parse_dictionary(blob,CodePage) {
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var cnt = blob.read_shift(4);
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var dict = {};
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for(var j = 0; j != cnt; ++j) {
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var pid = blob.read_shift(4);
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var len = blob.read_shift(4);
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dict[pid] = blob.read_shift(len, (CodePage === 0x4B0 ?'utf16le':'utf8')).replace(chr0,'').replace(chr1,'!');
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}
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if(blob.l & 3) blob.l = (blob.l>>2+1)<<2;
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return dict;
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}
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/* [MS-OLEPS] 2.9 BLOB */
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function parse_BLOB(blob) {
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var size = blob.read_shift(4);
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var bytes = blob.slice(blob.l,blob.l+size);
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if(size & 3 > 0) blob.l += (4 - (size & 3)) & 3;
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return bytes;
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}
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/* [MS-OLEPS] 2.11 ClipboardData */
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function parse_ClipboardData(blob) {
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// TODO
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var o = {};
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o.Size = blob.read_shift(4);
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//o.Format = blob.read_shift(4);
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blob.l += o.Size;
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return o;
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}
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/* [MS-OLEPS] 2.14 Vector and Array Property Types */
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function parse_VtVector(blob, cb) {
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/* [MS-OLEPS] 2.14.2 VectorHeader */
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/* var Length = blob.read_shift(4);
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var o = [];
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for(var i = 0; i != Length; ++i) {
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o.push(cb(blob));
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}
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return o;*/
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}
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/* [MS-OLEPS] 2.15 TypedPropertyValue */
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function parse_TypedPropertyValue(blob, type, _opts) {
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var t = blob.read_shift(2), ret, opts = _opts||{};
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blob.l += 2;
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if(type !== VT_VARIANT)
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if(t !== type && VT_CUSTOM.indexOf(type)===-1) throw new Error('Expected type ' + type + ' saw ' + t);
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switch(type === VT_VARIANT ? t : type) {
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case 0x02 /*VT_I2*/: ret = blob.read_shift(2, 'i'); if(!opts.raw) blob.l += 2; return ret;
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case 0x03 /*VT_I4*/: ret = blob.read_shift(4, 'i'); return ret;
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case 0x0B /*VT_BOOL*/: return blob.read_shift(4) !== 0x0;
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case 0x13 /*VT_UI4*/: ret = blob.read_shift(4); return ret;
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case 0x1E /*VT_LPSTR*/: return parse_lpstr(blob, t, 4).replace(chr0,'');
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case 0x1F /*VT_LPWSTR*/: return parse_lpwstr(blob);
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case 0x40 /*VT_FILETIME*/: return parse_FILETIME(blob);
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case 0x41 /*VT_BLOB*/: return parse_BLOB(blob);
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case 0x47 /*VT_CF*/: return parse_ClipboardData(blob);
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case 0x50 /*VT_STRING*/: return parse_VtString(blob, t, !opts.raw && 4).replace(chr0,'');
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case 0x51 /*VT_USTR*/: return parse_VtUnalignedString(blob, t, 4).replace(chr0,'');
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case 0x100C /*VT_VECTOR|VT_VARIANT*/: return parse_VtVecHeadingPair(blob);
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case 0x101E /*VT_LPSTR*/: return parse_VtVecUnalignedLpstr(blob);
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default: throw new Error("TypedPropertyValue unrecognized type " + type + " " + t);
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}
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}
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/* [MS-OLEPS] 2.14.2 VectorHeader */
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/*function parse_VTVectorVariant(blob) {
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var Length = blob.read_shift(4);
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if(Length & 1 !== 0) throw new Error("VectorHeader Length=" + Length + " must be even");
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var o = [];
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for(var i = 0; i != Length; ++i) {
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o.push(parse_TypedPropertyValue(blob, VT_VARIANT));
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}
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return o;
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}*/
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/* [MS-OLEPS] 2.20 PropertySet */
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function parse_PropertySet(blob, PIDSI) {
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var start_addr = blob.l;
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var size = blob.read_shift(4);
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var NumProps = blob.read_shift(4);
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var Props = [], i = 0;
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var CodePage = 0;
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var Dictionary = -1, DictObj;
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for(i = 0; i != NumProps; ++i) {
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var PropID = blob.read_shift(4);
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var Offset = blob.read_shift(4);
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Props[i] = [PropID, Offset + start_addr];
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}
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var PropH = {};
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for(i = 0; i != NumProps; ++i) {
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if(blob.l !== Props[i][1]) {
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var fail = true;
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if(i>0 && PIDSI) switch(PIDSI[Props[i-1][0]].t) {
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case 0x02 /*VT_I2*/: if(blob.l +2 === Props[i][1]) { blob.l+=2; fail = false; } break;
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case 0x50 /*VT_STRING*/: if(blob.l <= Props[i][1]) { blob.l=Props[i][1]; fail = false; } break;
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case 0x100C /*VT_VECTOR|VT_VARIANT*/: if(blob.l <= Props[i][1]) { blob.l=Props[i][1]; fail = false; } break;
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}
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if(!PIDSI && blob.l <= Props[i][1]) { fail=false; blob.l = Props[i][1]; }
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if(fail) throw new Error("Read Error: Expected address " + Props[i][1] + ' at ' + blob.l + ' :' + i);
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}
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if(PIDSI) {
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var piddsi = PIDSI[Props[i][0]];
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PropH[piddsi.n] = parse_TypedPropertyValue(blob, piddsi.t, {raw:true});
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if(piddsi.p === 'version') PropH[piddsi.n] = String(PropH[piddsi.n] >> 16) + "." + String(PropH[piddsi.n] & 0xFFFF);
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if(piddsi.n == "CodePage") switch(PropH[piddsi.n]) {
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case 0: PropH[piddsi.n] = 1252;
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/* falls through */
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case 10000: // OSX Roman
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case 1252: // Windows Latin
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case 874: // SB Windows Thai
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case 1250: // SB Windows Central Europe
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case 1251: // SB Windows Cyrillic
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case 1253: // SB Windows Greek
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case 1254: // SB Windows Turkish
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case 1255: // SB Windows Hebrew
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case 1256: // SB Windows Arabic
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case 1257: // SB Windows Baltic
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case 1258: // SB Windows Vietnam
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case 932: // DB Windows Japanese Shift-JIS
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case 936: // DB Windows Simplified Chinese GBK
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case 949: // DB Windows Korean
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case 950: // DB Windows Traditional Chinese Big5
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case 1200: // UTF16LE
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case 1201: // UTF16BE
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case 65000: case -536: // UTF-7
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case 65001: case -535: // UTF-8
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set_cp(CodePage = PropH[piddsi.n]); break;
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default: throw new Error("Unsupported CodePage: " + PropH[piddsi.n]);
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}
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} else {
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if(Props[i][0] === 0x1) {
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CodePage = PropH.CodePage = parse_TypedPropertyValue(blob, VT_I2);
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set_cp(CodePage);
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if(Dictionary !== -1) {
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var oldpos = blob.l;
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blob.l = Props[Dictionary][1];
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DictObj = parse_dictionary(blob,CodePage);
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blob.l = oldpos;
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}
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} else if(Props[i][0] === 0) {
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if(CodePage === 0) { Dictionary = i; blob.l = Props[i+1][1]; continue; }
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DictObj = parse_dictionary(blob,CodePage);
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} else {
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var name = DictObj[Props[i][0]];
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var val;
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/* [MS-OSHARED] 2.3.3.2.3.1.2 + PROPVARIANT */
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switch(blob[blob.l]) {
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case 0x41 /*VT_BLOB*/: blob.l += 4; val = parse_BLOB(blob); break;
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case 0x1E /*VT_LPSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]); break;
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case 0x1F /*VT_LPWSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]); break;
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case 0x03 /*VT_I4*/: blob.l += 4; val = blob.read_shift(4, 'i'); break;
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case 0x13 /*VT_UI4*/: blob.l += 4; val = blob.read_shift(4); break;
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case 0x05 /*VT_R8*/: blob.l += 4; val = blob.read_shift(8, 'f'); break;
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case 0x0B /*VT_BOOL*/: blob.l += 4; val = parsebool(blob, 4); break;
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case 0x40 /*VT_FILETIME*/: blob.l += 4; val = new Date(parse_FILETIME(blob)); break;
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default: throw new Error("unparsed value: " + blob[blob.l]);
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}
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PropH[name] = val;
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}
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}
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}
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blob.l = start_addr + size; /* step ahead to skip padding */
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return PropH;
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}
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/* [MS-OLEPS] 2.21 PropertySetStream */
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function parse_PropertySetStream(file, PIDSI) {
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var blob = file.content;
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prep_blob(blob, 0);
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var NumSets, FMTID0, FMTID1, Offset0, Offset1;
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blob.chk('feff', 'Byte Order: ');
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var vers = blob.read_shift(2); // TODO: check version
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var SystemIdentifier = blob.read_shift(4);
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blob.chk(CFB.utils.consts.HEADER_CLSID, 'CLSID: ');
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NumSets = blob.read_shift(4);
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if(NumSets !== 1 && NumSets !== 2) throw "Unrecognized #Sets: " + NumSets;
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FMTID0 = blob.read_shift(16); Offset0 = blob.read_shift(4);
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if(NumSets === 1 && Offset0 !== blob.l) throw "Length mismatch";
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else if(NumSets === 2) { FMTID1 = blob.read_shift(16); Offset1 = blob.read_shift(4); }
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var PSet0 = parse_PropertySet(blob, PIDSI);
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var rval = { SystemIdentifier: SystemIdentifier };
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for(var y in PSet0) rval[y] = PSet0[y];
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//rval.blob = blob;
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rval.FMTID = FMTID0;
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//rval.PSet0 = PSet0;
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if(NumSets === 1) return rval;
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if(blob.l !== Offset1) throw "Length mismatch 2: " + blob.l + " !== " + Offset1;
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var PSet1;
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try { PSet1 = parse_PropertySet(blob, null); } catch(e) { }
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for(y in PSet1) rval[y] = PSet1[y];
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rval.FMTID = [FMTID0, FMTID1]; // TODO: verify FMTID0/1
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return rval;
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}
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function parsenoop2(blob, length) { blob.read_shift(length); return null; }
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function parslurp(blob, length, cb) {
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var arr = [], target = blob.l + length;
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while(blob.l < target) arr.push(cb(blob, target - blob.l));
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if(target !== blob.l) throw new Error("Slurp error");
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return arr;
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}
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function parslurp2(blob, length, cb) {
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var arr = [], target = blob.l + length, len = blob.read_shift(2);
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while(len-- !== 0) arr.push(cb(blob, target - blob.l));
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if(target !== blob.l) throw new Error("Slurp error");
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return arr;
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}
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function parsebool(blob, length) { return blob.read_shift(length) === 0x1; }
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function parseuint16(blob) { return blob.read_shift(2, 'u'); }
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function parseuint16a(blob, length) { return parslurp(blob,length,parseuint16);}
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/* --- 2.5 Structures --- */
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/* [MS-XLS] 2.5.14 Boolean */
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var parse_Boolean = parsebool;
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/* [MS-XLS] 2.5.10 Bes (boolean or error) */
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function parse_Bes(blob) {
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var v = blob.read_shift(1), t = blob.read_shift(1);
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return t === 0x01 ? v : v === 0x01;
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}
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/* [MS-XLS] 2.5.240 ShortXLUnicodeString */
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function parse_ShortXLUnicodeString(blob, length, opts) {
|
||
|
|
var cch = blob.read_shift(1);
|
||
|
|
var width = 1, encoding = 'sbcs-cont';
|
||
|
|
var cp = current_codepage;
|
||
|
|
if(opts && opts.biff >= 8) current_codepage = 1200;
|
||
|
|
if(opts === undefined || opts.biff !== 5) {
|
||
|
|
var fHighByte = blob.read_shift(1);
|
||
|
|
if(fHighByte) { width = 2; encoding = 'dbcs-cont'; }
|
||
|
|
}
|
||
|
|
var o = cch ? blob.read_shift(cch, encoding) : "";
|
||
|
|
current_codepage = cp;
|
||
|
|
return o;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 2.5.293 XLUnicodeRichExtendedString */
|
||
|
|
function parse_XLUnicodeRichExtendedString(blob) {
|
||
|
|
var cp = current_codepage;
|
||
|
|
current_codepage = 1200;
|
||
|
|
var cch = blob.read_shift(2), flags = blob.read_shift(1);
|
||
|
|
var fHighByte = flags & 0x1, fExtSt = flags & 0x4, fRichSt = flags & 0x8;
|
||
|
|
var width = 1 + (flags & 0x1); // 0x0 -> utf8, 0x1 -> dbcs
|
||
|
|
var cRun, cbExtRst;
|
||
|
|
var z = {};
|
||
|
|
if(fRichSt) cRun = blob.read_shift(2);
|
||
|
|
if(fExtSt) cbExtRst = blob.read_shift(4);
|
||
|
|
var encoding = (flags & 0x1) ? 'dbcs-cont' : 'sbcs-cont';
|
||
|
|
var msg = cch === 0 ? "" : blob.read_shift(cch, encoding);
|
||
|
|
if(fRichSt) blob.l += 4 * cRun; //TODO: parse this
|
||
|
|
if(fExtSt) blob.l += cbExtRst; //TODO: parse this
|
||
|
|
z.t = msg;
|
||
|
|
if(!fRichSt) { z.raw = "<t>" + z.t + "</t>"; z.r = z.t; }
|
||
|
|
current_codepage = cp;
|
||
|
|
return z;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 2.5.296 XLUnicodeStringNoCch */
|
||
|
|
function parse_XLUnicodeStringNoCch(blob, cch, opts) {
|
||
|
|
var retval;
|
||
|
|
var fHighByte = blob.read_shift(1);
|
||
|
|
if(fHighByte===0) { retval = blob.read_shift(cch, 'sbcs-cont'); }
|
||
|
|
else { retval = blob.read_shift(cch, 'dbcs-cont'); }
|
||
|
|
return retval;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 2.5.294 XLUnicodeString */
|
||
|
|
function parse_XLUnicodeString(blob, length, opts) {
|
||
|
|
var cch = blob.read_shift(opts !== undefined && opts.biff > 0 && opts.biff < 8 ? 1 : 2);
|
||
|
|
if(cch === 0) { blob.l++; return ""; }
|
||
|
|
return parse_XLUnicodeStringNoCch(blob, cch, opts);
|
||
|
|
}
|
||
|
|
/* BIFF5 override */
|
||
|
|
function parse_XLUnicodeString2(blob, length, opts) {
|
||
|
|
if(opts.biff !== 5 && opts.biff !== 2) return parse_XLUnicodeString(blob, length, opts);
|
||
|
|
var cch = blob.read_shift(1);
|
||
|
|
if(cch === 0) { blob.l++; return ""; }
|
||
|
|
return blob.read_shift(cch, 'sbcs-cont');
|
||
|
|
}
|
||
|
|
|
||
|
|
/* [MS-XLS] 2.5.61 ControlInfo */
|
||
|
|
var parse_ControlInfo = parsenoop;
|
||
|
|
|
||
|
|
/* [MS-OSHARED] 2.3.7.6 URLMoniker TODO: flags */
|
||
|
|
var parse_URLMoniker = function(blob, length) {
|
||
|
|
var len = blob.read_shift(4), start = blob.l;
|
||
|
|
var extra = false;
|
||
|
|
if(len > 24) {
|
||
|
|
/* look ahead */
|
||
|
|
blob.l += len - 24;
|
||
|
|
if(blob.read_shift(16) === "795881f43b1d7f48af2c825dc4852763") extra = true;
|
||
|
|
blob.l = start;
|
||
|
|
}
|
||
|
|
var url = blob.read_shift((extra?len-24:len)>>1, 'utf16le').replace(chr0,"");
|
||
|
|
if(extra) blob.l += 24;
|
||
|
|
return url;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* [MS-OSHARED] 2.3.7.8 FileMoniker TODO: all fields */
|
||
|
|
var parse_FileMoniker = function(blob, length) {
|
||
|
|
var cAnti = blob.read_shift(2);
|
||
|
|
var ansiLength = blob.read_shift(4);
|
||
|
|
var ansiPath = blob.read_shift(ansiLength, 'cstr');
|
||
|
|
var endServer = blob.read_shift(2);
|
||
|
|
var versionNumber = blob.read_shift(2);
|
||
|
|
var cbUnicodePathSize = blob.read_shift(4);
|
||
|
|
if(cbUnicodePathSize === 0) return ansiPath.replace(/\\/g,"/");
|
||
|
|
var cbUnicodePathBytes = blob.read_shift(4);
|
||
|
|
var usKeyValue = blob.read_shift(2);
|
||
|
|
var unicodePath = blob.read_shift(cbUnicodePathBytes>>1, 'utf16le').replace(chr0,"");
|
||
|
|
return unicodePath;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* [MS-OSHARED] 2.3.7.2 HyperlinkMoniker TODO: all the monikers */
|
||
|
|
var parse_HyperlinkMoniker = function(blob, length) {
|
||
|
|
var clsid = blob.read_shift(16); length -= 16;
|
||
|
|
switch(clsid) {
|
||
|
|
case "e0c9ea79f9bace118c8200aa004ba90b": return parse_URLMoniker(blob, length);
|
||
|
|
case "0303000000000000c000000000000046": return parse_FileMoniker(blob, length);
|
||
|
|
default: throw "unsupported moniker " + clsid;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/* [MS-OSHARED] 2.3.7.9 HyperlinkString */
|
||
|
|
var parse_HyperlinkString = function(blob, length) {
|
||
|
|
var len = blob.read_shift(4);
|
||
|
|
var o = blob.read_shift(len, 'utf16le').replace(chr0, "");
|
||
|
|
return o;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* [MS-OSHARED] 2.3.7.1 Hyperlink Object TODO: unify params with XLSX */
|
||
|
|
var parse_Hyperlink = function(blob, length) {
|
||
|
|
var end = blob.l + length;
|
||
|
|
var sVer = blob.read_shift(4);
|
||
|
|
if(sVer !== 2) throw new Error("Unrecognized streamVersion: " + sVer);
|
||
|
|
var flags = blob.read_shift(2);
|
||
|
|
blob.l += 2;
|
||
|
|
var displayName, targetFrameName, moniker, oleMoniker, location, guid, fileTime;
|
||
|
|
if(flags & 0x0010) displayName = parse_HyperlinkString(blob, end - blob.l);
|
||
|
|
if(flags & 0x0080) targetFrameName = parse_HyperlinkString(blob, end - blob.l);
|
||
|
|
if((flags & 0x0101) === 0x0101) moniker = parse_HyperlinkString(blob, end - blob.l);
|
||
|
|
if((flags & 0x0101) === 0x0001) oleMoniker = parse_HyperlinkMoniker(blob, end - blob.l);
|
||
|
|
if(flags & 0x0008) location = parse_HyperlinkString(blob, end - blob.l);
|
||
|
|
if(flags & 0x0020) guid = blob.read_shift(16);
|
||
|
|
if(flags & 0x0040) fileTime = parse_FILETIME(blob, 8);
|
||
|
|
blob.l = end;
|
||
|
|
var target = (targetFrameName||moniker||oleMoniker);
|
||
|
|
if(location) target+="#"+location;
|
||
|
|
return {Target: target};
|
||
|
|
};
|
||
|
|
|
||
|
|
/* 2.5.178 LongRGBA */
|
||
|
|
function parse_LongRGBA(blob, length) { var r = blob.read_shift(1), g = blob.read_shift(1), b = blob.read_shift(1), a = blob.read_shift(1); return [r,g,b,a]; }
|
||
|
|
|
||
|
|
/* 2.5.177 LongRGB */
|
||
|
|
function parse_LongRGB(blob, length) { var x = parse_LongRGBA(blob, length); x[3] = 0; return x; }
|
||
|
|
|
||
|
|
|