43 lines
832 B
JavaScript
43 lines
832 B
JavaScript
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
export const MAX_ISLAND_BODY_BYTES = 64 * 1024;
|
||
|
|
|
||
|
|
export const MAX_ISLAND_PROP_DEPTH = 64;
|
||
|
|
|
||
|
|
export function exceedsMaxDepth(raw, maxDepth = MAX_ISLAND_PROP_DEPTH) {
|
||
|
|
let depth = 0;
|
||
|
|
let inString = false;
|
||
|
|
let escaped = false;
|
||
|
|
for (let i = 0; i < raw.length; i++) {
|
||
|
|
const ch = raw[i];
|
||
|
|
if (inString) {
|
||
|
|
if (escaped) {
|
||
|
|
escaped = false;
|
||
|
|
} else if (ch === "\\") {
|
||
|
|
escaped = true;
|
||
|
|
} else if (ch === "\"") {
|
||
|
|
inString = false;
|
||
|
|
}
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (ch === "\"") {
|
||
|
|
inString = true;
|
||
|
|
} else if (ch === "{" || ch === "[") {
|
||
|
|
if (++depth > maxDepth) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
} else if (ch === "}" || ch === "]") {
|
||
|
|
if (depth > 0) {
|
||
|
|
depth--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
export function exceedsMaxBytes(raw, maxBytes = MAX_ISLAND_BODY_BYTES) {
|
||
|
|
return Buffer.byteLength(raw, "utf8") > maxBytes;
|
||
|
|
}
|