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version bump 1.1.4: detect sector cycle (fixes #8)

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SheetJS 2020-03-13 01:58:41 -04:00
parent 6367acfd8a
commit 7c1980741a
16 changed files with 227 additions and 17 deletions
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6
README.md
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@ -131,7 +131,7 @@ accept a `name` argument strictly deal with absolute file names:
Set the option `{unsafe:true}` to skip existence checks (for bulk additions)
- `.cfb_del(cfb, name)` deletes the specified file
- `.cfb_mov(cfb, old_name, new_name)` moves the old file to new path and name
- `.use_zlib(require("zlib"))` loads a nodejs zlib instance.
- `.use_zlib(require("zlib"))` loads a nodejs `zlib` instance.
By default, the library uses a pure JS inflate/deflate implementation. NodeJS
`zlib.InflateRaw` exposes the number of bytes read in versions after `8.11.0`.
@ -169,7 +169,7 @@ granted by the Apache 2.0 License are reserved by the Original Author.
## References
- [MS-CFB]: Compound File Binary File Format
- ZIP `APPNOTE.TXT`: https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE-6.3.4.TXT
- `MS-CFB`: Compound File Binary File Format
- ZIP `APPNOTE.TXT`: .ZIP File Format Specification
- RFC1951: https://www.ietf.org/rfc/rfc1951.txt

2
bits/31_version.js
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@ -1 +1 @@
exports.version = '1.1.3';
exports.version = '1.1.4';

3
bits/45_readfat.js
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@ -43,7 +43,9 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -52,6 +54,7 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])}/*:SectorEntry*/);
}

5
cfb.flow.js
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@ -295,7 +295,7 @@ CRC32.str = crc32_str;
/* [MS-CFB] v20171201 */
var CFB = (function _CFB(){
var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
exports.version = '1.1.3';
exports.version = '1.1.4';
/* [MS-CFB] 2.6.4 */
function namecmp(l/*:string*/, r/*:string*/)/*:number*/ {
var L = l.split("/"), R = r.split("/");
@ -626,7 +626,9 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -635,6 +637,7 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])}/*:SectorEntry*/);
}

5
cfb.js
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@ -277,7 +277,7 @@ CRC32.str = crc32_str;
/* [MS-CFB] v20171201 */
var CFB = (function _CFB(){
var exports = {};
exports.version = '1.1.3';
exports.version = '1.1.4';
/* [MS-CFB] 2.6.4 */
function namecmp(l, r) {
var L = l.split("/"), R = r.split("/");
@ -608,7 +608,9 @@ function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -617,6 +619,7 @@ function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])});
}

190
dist/LICENSE vendored
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@ -1,4 +1,192 @@
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5
dist/cfb.js vendored
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@ -277,7 +277,7 @@ CRC32.str = crc32_str;
/* [MS-CFB] v20171201 */
var CFB = (function _CFB(){
var exports = {};
exports.version = '1.1.3';
exports.version = '1.1.4';
/* [MS-CFB] 2.6.4 */
function namecmp(l, r) {
var L = l.split("/"), R = r.split("/");
@ -608,7 +608,9 @@ function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -617,6 +619,7 @@ function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])});
}

2
dist/cfb.min.js vendored
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File diff suppressed because one or more lines are too long

2
dist/cfb.min.map vendored
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File diff suppressed because one or more lines are too long

5
dist/xlscfb.js vendored
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@ -142,7 +142,7 @@ CRC32.str = crc32_str;
/* [MS-CFB] v20171201 */
var CFB = (function _CFB(){
var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
exports.version = '1.1.3';
exports.version = '1.1.4';
/* [MS-CFB] 2.6.4 */
function namecmp(l/*:string*/, r/*:string*/)/*:number*/ {
var L = l.split("/"), R = r.split("/");
@ -473,7 +473,9 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -482,6 +484,7 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])}/*:SectorEntry*/);
}

2
index.html
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@ -46,7 +46,7 @@ Use readAsBinaryString: (when available) <input type="checkbox" name="userabs" c
<script>
/*jshint browser:true */
/* eslint-env browser */
/*global Uint8Array, ArrayBuffer, console, alert */
/*global Uint8Array, ArrayBuffer */
/*global CFB, out, PRINTJ, saveAs */
/* exported savefile, download_file */
/* eslint no-use-before-define:0 */

2
package.json
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@ -1,6 +1,6 @@
{
"name": "cfb",
"version": "1.1.3",
"version": "1.1.4",
"author": "sheetjs",
"description": "Compound File Binary File Format extractor",
"keywords": [

4
test.js
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@ -213,8 +213,8 @@ describe('output formats', function() {
if(typeof r[1] != "string") throw new Error(r[0] + " binary write failed");
var good = false;
for(var i = 0; i < r[1].length; ++i) {
if(r[1].charCodeAt(i) == 0x00) good = true;
else if(r[1].charCodeAt(i) > 0xFF) { good = false; break; }
if(/*::((*/r[1]/*:: :any):string)*/.charCodeAt(i) == 0x00) good = true;
else if(/*::((*/r[1]/*:: :any):string)*/.charCodeAt(i) > 0xFF) { good = false; break; }
}
if(!good) throw new Error(r[0] + " binary write failed");
});

1
types/tsconfig.json
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@ -9,6 +9,7 @@
"paths": { "cfb": ["."] },
"types": [],
"noEmit": true,
"strictFunctionTypes": true,
"forceConsistentCasingInFileNames": true
}
}

5
xlscfb.flow.js
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@ -142,7 +142,7 @@ CRC32.str = crc32_str;
/* [MS-CFB] v20171201 */
var CFB = (function _CFB(){
var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
exports.version = '1.1.3';
exports.version = '1.1.4';
/* [MS-CFB] 2.6.4 */
function namecmp(l/*:string*/, r/*:string*/)/*:number*/ {
var L = l.split("/"), R = r.split("/");
@ -473,7 +473,9 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -482,6 +484,7 @@ function make_sector_list(sectors/*:Array<RawBytes>*/, dir_start/*:number*/, fat
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])}/*:SectorEntry*/);
}

5
xlscfb.js
View File

@ -109,7 +109,7 @@ CRC32.str = crc32_str;
/* [MS-CFB] v20171201 */
var CFB = (function _CFB(){
var exports = {};
exports.version = '1.1.3';
exports.version = '1.1.4';
/* [MS-CFB] 2.6.4 */
function namecmp(l, r) {
var L = l.split("/"), R = r.split("/");
@ -440,7 +440,9 @@ function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
k = (i + dir_start); if(k >= sl) k-=sl;
if(chkd[k]) continue;
buf_chain = [];
var seen = [];
for(j=k; j>=0;) {
seen[j] = true;
chkd[j] = true;
buf[buf.length] = j;
buf_chain.push(sectors[j]);
@ -449,6 +451,7 @@ function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
if(!sectors[addr]) break;
j = __readInt32LE(sectors[addr], jj);
if(seen[j]) break;
}
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])});
}