diff --git a/package-lock.json b/package-lock.json index a121011..f0b8f0d 100644 --- a/package-lock.json +++ b/package-lock.json @@ -9,8 +9,10 @@ "version": "2.0.0-alpha.1", "dependencies": { "bcrypt": "^6.0.0", + "dompurify": "^3.4.7", "dotenv": "^17.4.2", "express": "^5.2.1", + "marked": "^18.0.4", "pg": "^8.21.0", "pino": "^10.3.1", "pino-pretty": "^13.1.3", @@ -509,6 +511,13 @@ "dev": true, "license": "MIT" }, + "node_modules/@types/trusted-types": { + "version": "2.0.7", + "resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz", + "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==", + "license": "MIT", + "optional": true + }, "node_modules/@vitest/coverage-v8": { "version": "4.1.7", "resolved": "https://registry.npmjs.org/@vitest/coverage-v8/-/coverage-v8-4.1.7.tgz", @@ -946,6 +955,15 @@ "wrappy": "1" } }, + "node_modules/dompurify": { + "version": "3.4.7", + "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.7.tgz", + "integrity": "sha512-2jBxDJY4RR06tQNy4w5FlFH7kfxsQZlufd0sbv+chfHCxeJwrFw2baUDsSwvBISD4K4RDbd0PTfy3uNXsR6siA==", + "license": "(MPL-2.0 OR Apache-2.0)", + "optionalDependencies": { + "@types/trusted-types": "^2.0.7" + } + }, "node_modules/dotenv": { "version": "17.4.2", "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.4.2.tgz", @@ -1801,6 +1819,18 @@ "url": "https://github.com/sponsors/sindresorhus" } }, + "node_modules/marked": { + "version": "18.0.4", + "resolved": "https://registry.npmjs.org/marked/-/marked-18.0.4.tgz", + "integrity": "sha512-c/BTaKzg0G6ezQx97DAkYU7k0HM6ys0FqYeKBL6hlBByZwy+ycA1+f0vDdjMHKKeEjdgkx0GOv9Il6D+85cOqA==", + "license": "MIT", + "bin": { + "marked": "bin/marked.js" + }, + "engines": { + "node": ">= 20" + } + }, "node_modules/math-intrinsics": { "version": "1.1.0", "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz", diff --git a/package.json b/package.json index ed9a033..a7c51a4 100644 --- a/package.json +++ b/package.json @@ -11,8 +11,10 @@ }, "dependencies": { "bcrypt": "^6.0.0", + "dompurify": "^3.4.7", "dotenv": "^17.4.2", "express": "^5.2.1", + "marked": "^18.0.4", "pg": "^8.21.0", "pino": "^10.3.1", "pino-pretty": "^13.1.3", diff --git a/public/components/markdown_editor.js b/public/components/markdown_editor.js new file mode 100644 index 0000000..a71cdaa --- /dev/null +++ b/public/components/markdown_editor.js @@ -0,0 +1,56 @@ +// Split-pane Markdown editor. +// - Left: textarea (raw markdown) +// - Right: rendered HTML preview via marked → DOMPurify +// Save button calls a caller-supplied save(value) that returns a promise +// resolving to the updated row. We surface the last edited_at timestamp. + +import { marked } from '../vendor/marked.esm.js'; +import DOMPurify from '../vendor/purify.es.mjs'; +import { el } from '../dom.js'; + +marked.setOptions({ gfm: true, breaks: true }); + +export function markdownEditor({ initial = '', save }) { + const ta = el('textarea', { + style: { + width: '100%', minHeight: '420px', resize: 'vertical', + fontFamily: 'var(--font-mono)', fontSize: '13px', lineHeight: '1.5' + } + }); + ta.value = initial; + + const preview = el('div', { class: 'md-preview' }); + function rerender() { + const html = DOMPurify.sanitize(marked.parse(ta.value)); + preview.innerHTML = html; // sanitized — see dom.js note about html: opt-in + } + ta.addEventListener('input', rerender); + rerender(); + + const stamp = el('span', { class: 'muted', style: { fontSize: '11px' } }, ''); + const btn = el('button', { + class: 'primary', + onclick: async () => { + btn.disabled = true; + try { + const updated = await save(ta.value); + if (updated?.updated_at) stamp.textContent = 'Saved ' + new Date(updated.updated_at).toLocaleString(); + else stamp.textContent = 'Saved'; + } catch (e) { + stamp.textContent = 'Save failed: ' + e.message; + } finally { + btn.disabled = false; + } + } + }, 'Save'); + + return el('div', {}, + el('div', { class: 'row' }, + el('div', { class: 'card' }, el('h3', {}, 'Edit'), ta), + el('div', { class: 'card' }, el('h3', {}, 'Preview'), preview) + ), + el('div', { style: { display: 'flex', gap: '12px', alignItems: 'center', marginTop: '8px' } }, + btn, stamp + ) + ); +} diff --git a/public/vendor/marked.esm.js b/public/vendor/marked.esm.js new file mode 100644 index 0000000..73f2b9e --- /dev/null +++ b/public/vendor/marked.esm.js @@ -0,0 +1,77 @@ +/** + * marked v18.0.4 - a markdown parser + * Copyright (c) 2018-2026, MarkedJS. 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n=t[0],s=st(n,t[3]||"",this.rules);return{type:"code",raw:n,lang:t[2]?t[2].trim().replace(this.rules.inline.anyPunctuation,"$1"):t[2],text:s}}}heading(e){let t=this.rules.block.heading.exec(e);if(t){let n=t[2].trim();if(this.rules.other.endingHash.test(n)){let s=$(n,"#");(this.options.pedantic||!s||this.rules.other.endingSpaceChar.test(s))&&(n=s.trim())}return{type:"heading",raw:$(t[0],` +`),depth:t[1].length,text:n,tokens:this.lexer.inline(n)}}}hr(e){let t=this.rules.block.hr.exec(e);if(t)return{type:"hr",raw:$(t[0],` +`)}}blockquote(e){let t=this.rules.block.blockquote.exec(e);if(t){let n=$(t[0],` +`).split(` +`),s="",r="",i=[];for(;n.length>0;){let o=!1,u=[],a;for(a=0;a1,r={type:"list",raw:"",ordered:s,start:s?+n.slice(0,-1):"",loose:!1,items:[]};n=s?`\\d{1,9}\\${n.slice(-1)}`:`\\${n}`,this.options.pedantic&&(n=s?n:"[*+-]");let i=this.rules.other.listItemRegex(n),o=!1;for(;e;){let a=!1,c="",p="";if(!(t=i.exec(e))||this.rules.block.hr.test(e))break;c=t[0],e=e.substring(c.length);let k=me(t[2].split(` +`,1)[0],t[1].length),h=e.split(` +`,1)[0],R=!k.trim(),f=0;if(this.options.pedantic?(f=2,p=k.trimStart()):R?f=t[1].length+1:(f=k.search(this.rules.other.nonSpaceChar),f=f>4?1:f,p=k.slice(f),f+=t[1].length),R&&this.rules.other.blankLine.test(h)&&(c+=h+` +`,e=e.substring(h.length+1),a=!0),!a){let S=this.rules.other.nextBulletRegex(f),te=this.rules.other.hrRegex(f),ne=this.rules.other.fencesBeginRegex(f),re=this.rules.other.headingBeginRegex(f),be=this.rules.other.htmlBeginRegex(f),Re=this.rules.other.blockquoteBeginRegex(f);for(;e;){let G=e.split(` +`,1)[0],C;if(h=G,this.options.pedantic?(h=h.replace(this.rules.other.listReplaceNesting," "),C=h):C=h.replace(this.rules.other.tabCharGlobal," "),ne.test(h)||re.test(h)||be.test(h)||Re.test(h)||S.test(h)||te.test(h))break;if(C.search(this.rules.other.nonSpaceChar)>=f||!h.trim())p+=` +`+C.slice(f);else{if(R||k.replace(this.rules.other.tabCharGlobal," 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k=this.lexer.inlineQueue.length-1;k>=0;k--)if(this.rules.other.listIsTask.test(this.lexer.inlineQueue[k].src)){this.lexer.inlineQueue[k].src=this.lexer.inlineQueue[k].src.replace(this.rules.other.listReplaceTask,"");break}let p=this.rules.other.listTaskCheckbox.exec(a.raw);if(p){let k={type:"checkbox",raw:p[0]+" ",checked:p[0]!=="[ ]"};a.checked=k.checked,r.loose?a.tokens[0]&&["paragraph","text"].includes(a.tokens[0].type)&&"tokens"in a.tokens[0]&&a.tokens[0].tokens?(a.tokens[0].raw=k.raw+a.tokens[0].raw,a.tokens[0].text=k.raw+a.tokens[0].text,a.tokens[0].tokens.unshift(k)):a.tokens.unshift({type:"paragraph",raw:k.raw,text:k.raw,tokens:[k]}):a.tokens.unshift(k)}}else a.task&&(a.task=!1);if(!r.loose){let p=a.tokens.filter(h=>h.type==="space"),k=p.length>0&&p.some(h=>this.rules.other.anyLine.test(h.raw));r.loose=k}}if(r.loose)for(let a of r.items){a.loose=!0;for(let c of a.tokens)c.type==="text"&&(c.type="paragraph")}return r}}html(e){let t=this.rules.block.html.exec(e);if(t){let n=ee(t[0]);return{type:"html",block:!0,raw:n,pre:t[1]==="pre"||t[1]==="script"||t[1]==="style",text:n}}}def(e){let t=this.rules.block.def.exec(e);if(t){let n=t[1].toLowerCase().replace(this.rules.other.multipleSpaceGlobal," "),s=t[2]?t[2].replace(this.rules.other.hrefBrackets,"$1").replace(this.rules.inline.anyPunctuation,"$1"):"",r=t[3]?t[3].substring(1,t[3].length-1).replace(this.rules.inline.anyPunctuation,"$1"):t[3];return{type:"def",tag:n,raw:$(t[0],` +`),href:s,title:r}}}table(e){let t=this.rules.block.table.exec(e);if(!t||!this.rules.other.tableDelimiter.test(t[2]))return;let n=Y(t[1]),s=t[2].replace(this.rules.other.tableAlignChars,"").split("|"),r=t[3]?.trim()?t[3].replace(this.rules.other.tableRowBlankLine,"").split(` +`):[],i={type:"table",raw:$(t[0],` +`),header:[],align:[],rows:[]};if(n.length===s.length){for(let o of s)this.rules.other.tableAlignRight.test(o)?i.align.push("right"):this.rules.other.tableAlignCenter.test(o)?i.align.push("center"):this.rules.other.tableAlignLeft.test(o)?i.align.push("left"):i.align.push(null);for(let o=0;o({text:u,tokens:this.lexer.inline(u),header:!1,align:i.align[a]})));return i}}lheading(e){let t=this.rules.block.lheading.exec(e);if(t){let n=t[1].trim();return{type:"heading",raw:$(t[0],` +`),depth:t[2].charAt(0)==="="?1:2,text:n,tokens:this.lexer.inline(n)}}}paragraph(e){let t=this.rules.block.paragraph.exec(e);if(t){let n=t[1].charAt(t[1].length-1)===` +`?t[1].slice(0,-1):t[1];return{type:"paragraph",raw:t[0],text:n,tokens:this.lexer.inline(n)}}}text(e){let t=this.rules.block.text.exec(e);if(t)return{type:"text",raw:t[0],text:t[0],tokens:this.lexer.inline(t[0])}}escape(e){let t=this.rules.inline.escape.exec(e);if(t)return{type:"escape",raw:t[0],text:t[1]}}tag(e){let t=this.rules.inline.tag.exec(e);if(t)return!this.lexer.state.inLink&&this.rules.other.startATag.test(t[0])?this.lexer.state.inLink=!0:this.lexer.state.inLink&&this.rules.other.endATag.test(t[0])&&(this.lexer.state.inLink=!1),!this.lexer.state.inRawBlock&&this.rules.other.startPreScriptTag.test(t[0])?this.lexer.state.inRawBlock=!0:this.lexer.state.inRawBlock&&this.rules.other.endPreScriptTag.test(t[0])&&(this.lexer.state.inRawBlock=!1),{type:"html",raw:t[0],inLink:this.lexer.state.inLink,inRawBlock:this.lexer.state.inRawBlock,block:!1,text:t[0]}}link(e){let t=this.rules.inline.link.exec(e);if(t){let n=t[2].trim();if(!this.options.pedantic&&this.rules.other.startAngleBracket.test(n)){if(!this.rules.other.endAngleBracket.test(n))return;let i=$(n.slice(0,-1),"\\");if((n.length-i.length)%2===0)return}else{let i=fe(t[2],"()");if(i===-2)return;if(i>-1){let u=(t[0].indexOf("!")===0?5:4)+t[1].length+i;t[2]=t[2].substring(0,i),t[0]=t[0].substring(0,u).trim(),t[3]=""}}let s=t[2],r="";if(this.options.pedantic){let i=this.rules.other.pedanticHrefTitle.exec(s);i&&(s=i[1],r=i[3])}else r=t[3]?t[3].slice(1,-1):"";return s=s.trim(),this.rules.other.startAngleBracket.test(s)&&(this.options.pedantic&&!this.rules.other.endAngleBracket.test(n)?s=s.slice(1):s=s.slice(1,-1)),xe(t,{href:s&&s.replace(this.rules.inline.anyPunctuation,"$1"),title:r&&r.replace(this.rules.inline.anyPunctuation,"$1")},t[0],this.lexer,this.rules)}}reflink(e,t){let n;if((n=this.rules.inline.reflink.exec(e))||(n=this.rules.inline.nolink.exec(e))){let s=(n[2]||n[1]).replace(this.rules.other.multipleSpaceGlobal," "),r=t[s.toLowerCase()];if(!r){let i=n[0].charAt(0);return{type:"text",raw:i,text:i}}return xe(n,r,n[0],this.lexer,this.rules)}}emStrong(e,t,n=""){let s=this.rules.inline.emStrongLDelim.exec(e);if(!s||!s[1]&&!s[2]&&!s[3]&&!s[4]||s[4]&&n.match(this.rules.other.unicodeAlphaNumeric))return;if(!(s[1]||s[3]||"")||!n||this.rules.inline.punctuation.exec(n)){let i=[...s[0]].length-1,o,u,a=i,c=0,p=s[0][0]==="*"?this.rules.inline.emStrongRDelimAst:this.rules.inline.emStrongRDelimUnd;for(p.lastIndex=0,t=t.slice(-1*e.length+i);(s=p.exec(t))!==null;){if(o=s[1]||s[2]||s[3]||s[4]||s[5]||s[6],!o)continue;if(u=[...o].length,s[3]||s[4]){a+=u;continue}else if((s[5]||s[6])&&i%3&&!((i+u)%3)){c+=u;continue}if(a-=u,a>0)continue;u=Math.min(u,u+a+c);let k=[...s[0]][0].length,h=e.slice(0,i+s.index+k+u);if(Math.min(i,u)%2){let f=h.slice(1,-1);return{type:"em",raw:h,text:f,tokens:this.lexer.inlineTokens(f)}}let R=h.slice(2,-2);return{type:"strong",raw:h,text:R,tokens:this.lexer.inlineTokens(R)}}}}codespan(e){let t=this.rules.inline.code.exec(e);if(t){let n=t[2].replace(this.rules.other.newLineCharGlobal," "),s=this.rules.other.nonSpaceChar.test(n),r=this.rules.other.startingSpaceChar.test(n)&&this.rules.other.endingSpaceChar.test(n);return s&&r&&(n=n.substring(1,n.length-1)),{type:"codespan",raw:t[0],text:n}}}br(e){let t=this.rules.inline.br.exec(e);if(t)return{type:"br",raw:t[0]}}del(e,t,n=""){let s=this.rules.inline.delLDelim.exec(e);if(!s)return;if(!(s[1]||"")||!n||this.rules.inline.punctuation.exec(n)){let i=[...s[0]].length-1,o,u,a=i,c=this.rules.inline.delRDelim;for(c.lastIndex=0,t=t.slice(-1*e.length+i);(s=c.exec(t))!==null;){if(o=s[1]||s[2]||s[3]||s[4]||s[5]||s[6],!o||(u=[...o].length,u!==i))continue;if(s[3]||s[4]){a+=u;continue}if(a-=u,a>0)continue;u=Math.min(u,u+a);let p=[...s[0]][0].length,k=e.slice(0,i+s.index+p+u),h=k.slice(i,-i);return{type:"del",raw:k,text:h,tokens:this.lexer.inlineTokens(h)}}}}autolink(e){let t=this.rules.inline.autolink.exec(e);if(t){let n,s;return t[2]==="@"?(n=t[1],s="mailto:"+n):(n=t[1],s=n),{type:"link",raw:t[0],text:n,href:s,tokens:[{type:"text",raw:n,text:n}]}}}url(e){let t;if(t=this.rules.inline.url.exec(e)){let n,s;if(t[2]==="@")n=t[0],s="mailto:"+n;else{let r;do r=t[0],t[0]=this.rules.inline._backpedal.exec(t[0])?.[0]??"";while(r!==t[0]);n=t[0],t[1]==="www."?s="http://"+t[0]:s=t[0]}return{type:"link",raw:t[0],text:n,href:s,tokens:[{type:"text",raw:n,text:n}]}}}inlineText(e){let t=this.rules.inline.text.exec(e);if(t){let n=this.lexer.state.inRawBlock;return{type:"text",raw:t[0],text:t[0],escaped:n}}}};var x=class l{tokens;options;state;inlineQueue;tokenizer;constructor(e){this.tokens=[],this.tokens.links=Object.create(null),this.options=e||T,this.options.tokenizer=this.options.tokenizer||new w,this.tokenizer=this.options.tokenizer,this.tokenizer.options=this.options,this.tokenizer.lexer=this,this.inlineQueue=[],this.state={inLink:!1,inRawBlock:!1,top:!0};let t={other:m,block:D.normal,inline:A.normal};this.options.pedantic?(t.block=D.pedantic,t.inline=A.pedantic):this.options.gfm&&(t.block=D.gfm,this.options.breaks?t.inline=A.breaks:t.inline=A.gfm),this.tokenizer.rules=t}static get rules(){return{block:D,inline:A}}static lex(e,t){return new l(t).lex(e)}static lexInline(e,t){return new l(t).inlineTokens(e)}lex(e){e=e.replace(m.carriageReturn,` +`),this.blockTokens(e,this.tokens);for(let t=0;t(r=o.call({lexer:this},e,t))?(e=e.substring(r.raw.length),t.push(r),!0):!1))continue;if(r=this.tokenizer.space(e)){e=e.substring(r.raw.length);let o=t.at(-1);r.raw.length===1&&o!==void 0?o.raw+=` +`:t.push(r);continue}if(r=this.tokenizer.code(e)){e=e.substring(r.raw.length);let o=t.at(-1);o?.type==="paragraph"||o?.type==="text"?(o.raw+=(o.raw.endsWith(` +`)?"":` +`)+r.raw,o.text+=` +`+r.text,this.inlineQueue.at(-1).src=o.text):t.push(r);continue}if(r=this.tokenizer.fences(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.heading(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.hr(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.blockquote(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.list(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.html(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.def(e)){e=e.substring(r.raw.length);let o=t.at(-1);o?.type==="paragraph"||o?.type==="text"?(o.raw+=(o.raw.endsWith(` +`)?"":` +`)+r.raw,o.text+=` +`+r.raw,this.inlineQueue.at(-1).src=o.text):this.tokens.links[r.tag]||(this.tokens.links[r.tag]={href:r.href,title:r.title},t.push(r));continue}if(r=this.tokenizer.table(e)){e=e.substring(r.raw.length),t.push(r);continue}if(r=this.tokenizer.lheading(e)){e=e.substring(r.raw.length),t.push(r);continue}let i=e;if(this.options.extensions?.startBlock){let o=1/0,u=e.slice(1),a;this.options.extensions.startBlock.forEach(c=>{a=c.call({lexer:this},u),typeof a=="number"&&a>=0&&(o=Math.min(o,a))}),o<1/0&&o>=0&&(i=e.substring(0,o+1))}if(this.state.top&&(r=this.tokenizer.paragraph(i))){let o=t.at(-1);n&&o?.type==="paragraph"?(o.raw+=(o.raw.endsWith(` +`)?"":` +`)+r.raw,o.text+=` +`+r.text,this.inlineQueue.pop(),this.inlineQueue.at(-1).src=o.text):t.push(r),n=i.length!==e.length,e=e.substring(r.raw.length);continue}if(r=this.tokenizer.text(e)){e=e.substring(r.raw.length);let o=t.at(-1);o?.type==="text"?(o.raw+=(o.raw.endsWith(` +`)?"":` +`)+r.raw,o.text+=` +`+r.text,this.inlineQueue.pop(),this.inlineQueue.at(-1).src=o.text):t.push(r);continue}if(e){this.infiniteLoopError(e.charCodeAt(0));break}}return this.state.top=!0,t}inline(e,t=[]){return this.inlineQueue.push({src:e,tokens:t}),t}inlineTokens(e,t=[]){this.tokenizer.lexer=this;let n=e,s=null;if(this.tokens.links){let a=Object.keys(this.tokens.links);if(a.length>0)for(;(s=this.tokenizer.rules.inline.reflinkSearch.exec(n))!==null;)a.includes(s[0].slice(s[0].lastIndexOf("[")+1,-1))&&(n=n.slice(0,s.index)+"["+"a".repeat(s[0].length-2)+"]"+n.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;(s=this.tokenizer.rules.inline.anyPunctuation.exec(n))!==null;)n=n.slice(0,s.index)+"++"+n.slice(this.tokenizer.rules.inline.anyPunctuation.lastIndex);let r;for(;(s=this.tokenizer.rules.inline.blockSkip.exec(n))!==null;)r=s[2]?s[2].length:0,n=n.slice(0,s.index+r)+"["+"a".repeat(s[0].length-r-2)+"]"+n.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);n=this.options.hooks?.emStrongMask?.call({lexer:this},n)??n;let i=!1,o="",u=1/0;for(;e;){if(e.length(a=p.call({lexer:this},e,t))?(e=e.substring(a.raw.length),t.push(a),!0):!1))continue;if(a=this.tokenizer.escape(e)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.tag(e)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.link(e)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.reflink(e,this.tokens.links)){e=e.substring(a.raw.length);let p=t.at(-1);a.type==="text"&&p?.type==="text"?(p.raw+=a.raw,p.text+=a.text):t.push(a);continue}if(a=this.tokenizer.emStrong(e,n,o)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.codespan(e)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.br(e)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.del(e,n,o)){e=e.substring(a.raw.length),t.push(a);continue}if(a=this.tokenizer.autolink(e)){e=e.substring(a.raw.length),t.push(a);continue}if(!this.state.inLink&&(a=this.tokenizer.url(e))){e=e.substring(a.raw.length),t.push(a);continue}let c=e;if(this.options.extensions?.startInline){let p=1/0,k=e.slice(1),h;this.options.extensions.startInline.forEach(R=>{h=R.call({lexer:this},k),typeof h=="number"&&h>=0&&(p=Math.min(p,h))}),p<1/0&&p>=0&&(c=e.substring(0,p+1))}if(a=this.tokenizer.inlineText(c)){e=e.substring(a.raw.length),a.raw.slice(-1)!=="_"&&(o=a.raw.slice(-1)),i=!0;let p=t.at(-1);p?.type==="text"?(p.raw+=a.raw,p.text+=a.text):t.push(a);continue}if(e){this.infiniteLoopError(e.charCodeAt(0));break}}return t}infiniteLoopError(e){let t="Infinite loop on byte: "+e;if(this.options.silent)console.error(t);else throw new Error(t)}};var y=class{options;parser;constructor(e){this.options=e||T}space(e){return""}code({text:e,lang:t,escaped:n}){let s=(t||"").match(m.notSpaceStart)?.[0],r=e.replace(m.endingNewline,"")+` +`;return s?'
'+(n?r:O(r,!0))+`
+`:"
"+(n?r:O(r,!0))+`
+`}blockquote({tokens:e}){return`
+${this.parser.parse(e)}
+`}html({text:e}){return e}def(e){return""}heading({tokens:e,depth:t}){return`${this.parser.parseInline(e)} +`}hr(e){return`
+`}list(e){let t=e.ordered,n=e.start,s="";for(let o=0;o +`+s+" +`}listitem(e){return`
  • ${this.parser.parse(e.tokens)}
  • +`}checkbox({checked:e}){return" '}paragraph({tokens:e}){return`

    ${this.parser.parseInline(e)}

    +`}table(e){let t="",n="";for(let r=0;r${s}`),` + +`+t+` +`+s+`
    +`}tablerow({text:e}){return` +${e} +`}tablecell(e){let t=this.parser.parseInline(e.tokens),n=e.header?"th":"td";return(e.align?`<${n} align="${e.align}">`:`<${n}>`)+t+` +`}strong({tokens:e}){return`${this.parser.parseInline(e)}`}em({tokens:e}){return`${this.parser.parseInline(e)}`}codespan({text:e}){return`${O(e,!0)}`}br(e){return"
    "}del({tokens:e}){return`${this.parser.parseInline(e)}`}link({href:e,title:t,tokens:n}){let s=this.parser.parseInline(n),r=V(e);if(r===null)return s;e=r;let i='
    ",i}image({href:e,title:t,text:n,tokens:s}){s&&(n=this.parser.parseInline(s,this.parser.textRenderer));let r=V(e);if(r===null)return O(n);e=r;let i=`${O(n)}{let o=r[i].flat(1/0);n=n.concat(this.walkTokens(o,t))}):r.tokens&&(n=n.concat(this.walkTokens(r.tokens,t)))}}return n}use(...e){let t=this.defaults.extensions||{renderers:{},childTokens:{}};return e.forEach(n=>{let s={...n};if(s.async=this.defaults.async||s.async||!1,n.extensions&&(n.extensions.forEach(r=>{if(!r.name)throw new Error("extension name required");if("renderer"in r){let i=t.renderers[r.name];i?t.renderers[r.name]=function(...o){let u=r.renderer.apply(this,o);return u===!1&&(u=i.apply(this,o)),u}:t.renderers[r.name]=r.renderer}if("tokenizer"in r){if(!r.level||r.level!=="block"&&r.level!=="inline")throw new Error("extension level must be 'block' or 'inline'");let i=t[r.level];i?i.unshift(r.tokenizer):t[r.level]=[r.tokenizer],r.start&&(r.level==="block"?t.startBlock?t.startBlock.push(r.start):t.startBlock=[r.start]:r.level==="inline"&&(t.startInline?t.startInline.push(r.start):t.startInline=[r.start]))}"childTokens"in r&&r.childTokens&&(t.childTokens[r.name]=r.childTokens)}),s.extensions=t),n.renderer){let r=this.defaults.renderer||new y(this.defaults);for(let i in n.renderer){if(!(i in r))throw new Error(`renderer '${i}' does not exist`);if(["options","parser"].includes(i))continue;let o=i,u=n.renderer[o],a=r[o];r[o]=(...c)=>{let p=u.apply(r,c);return p===!1&&(p=a.apply(r,c)),p||""}}s.renderer=r}if(n.tokenizer){let r=this.defaults.tokenizer||new w(this.defaults);for(let i in n.tokenizer){if(!(i in r))throw new Error(`tokenizer '${i}' does not exist`);if(["options","rules","lexer"].includes(i))continue;let o=i,u=n.tokenizer[o],a=r[o];r[o]=(...c)=>{let p=u.apply(r,c);return p===!1&&(p=a.apply(r,c)),p}}s.tokenizer=r}if(n.hooks){let r=this.defaults.hooks||new P;for(let i in n.hooks){if(!(i in r))throw new Error(`hook '${i}' does not exist`);if(["options","block"].includes(i))continue;let o=i,u=n.hooks[o],a=r[o];P.passThroughHooks.has(i)?r[o]=c=>{if(this.defaults.async&&P.passThroughHooksRespectAsync.has(i))return(async()=>{let k=await u.call(r,c);return a.call(r,k)})();let p=u.call(r,c);return a.call(r,p)}:r[o]=(...c)=>{if(this.defaults.async)return(async()=>{let k=await u.apply(r,c);return k===!1&&(k=await a.apply(r,c)),k})();let p=u.apply(r,c);return p===!1&&(p=a.apply(r,c)),p}}s.hooks=r}if(n.walkTokens){let r=this.defaults.walkTokens,i=n.walkTokens;s.walkTokens=function(o){let u=[];return u.push(i.call(this,o)),r&&(u=u.concat(r.call(this,o))),u}}this.defaults={...this.defaults,...s}}),this}setOptions(e){return this.defaults={...this.defaults,...e},this}lexer(e,t){return x.lex(e,t??this.defaults)}parser(e,t){return b.parse(e,t??this.defaults)}parseMarkdown(e){return(n,s)=>{let r={...s},i={...this.defaults,...r},o=this.onError(!!i.silent,!!i.async);if(this.defaults.async===!0&&r.async===!1)return o(new Error("marked(): The async option was set to true by an extension. Remove async: false from the parse options object to return a Promise."));if(typeof n>"u"||n===null)return o(new Error("marked(): input parameter is undefined or null"));if(typeof n!="string")return o(new Error("marked(): input parameter is of type "+Object.prototype.toString.call(n)+", string expected"));if(i.hooks&&(i.hooks.options=i,i.hooks.block=e),i.async)return(async()=>{let u=i.hooks?await i.hooks.preprocess(n):n,c=await(i.hooks?await i.hooks.provideLexer(e):e?x.lex:x.lexInline)(u,i),p=i.hooks?await i.hooks.processAllTokens(c):c;i.walkTokens&&await Promise.all(this.walkTokens(p,i.walkTokens));let h=await(i.hooks?await i.hooks.provideParser(e):e?b.parse:b.parseInline)(p,i);return i.hooks?await i.hooks.postprocess(h):h})().catch(o);try{i.hooks&&(n=i.hooks.preprocess(n));let a=(i.hooks?i.hooks.provideLexer(e):e?x.lex:x.lexInline)(n,i);i.hooks&&(a=i.hooks.processAllTokens(a)),i.walkTokens&&this.walkTokens(a,i.walkTokens);let p=(i.hooks?i.hooks.provideParser(e):e?b.parse:b.parseInline)(a,i);return i.hooks&&(p=i.hooks.postprocess(p)),p}catch(u){return o(u)}}}onError(e,t){return n=>{if(n.message+=` +Please report this to https://github.com/markedjs/marked.`,e){let s="

    An error occurred:

    "+O(n.message+"",!0)+"
    ";return t?Promise.resolve(s):s}if(t)return Promise.reject(n);throw n}}};var z=new q;function g(l,e){return z.parse(l,e)}g.options=g.setOptions=function(l){return z.setOptions(l),g.defaults=z.defaults,N(g.defaults),g};g.getDefaults=M;g.defaults=T;g.use=function(...l){return z.use(...l),g.defaults=z.defaults,N(g.defaults),g};g.walkTokens=function(l,e){return z.walkTokens(l,e)};g.parseInline=z.parseInline;g.Parser=b;g.parser=b.parse;g.Renderer=y;g.TextRenderer=L;g.Lexer=x;g.lexer=x.lex;g.Tokenizer=w;g.Hooks=P;g.parse=g;var Ft=g.options,Ut=g.setOptions,Kt=g.use,Wt=g.walkTokens,Xt=g.parseInline,Jt=g,Vt=b.parse,Yt=x.lex;export{P as Hooks,x as Lexer,q as Marked,b as Parser,y as Renderer,L as TextRenderer,w as Tokenizer,T as defaults,M as getDefaults,Yt as lexer,g as marked,Ft as options,Jt as parse,Xt as parseInline,Vt as parser,Ut as setOptions,Kt as use,Wt as walkTokens}; +//# sourceMappingURL=marked.esm.js.map diff --git a/public/vendor/purify.es.mjs b/public/vendor/purify.es.mjs new file mode 100644 index 0000000..e377703 --- /dev/null +++ b/public/vendor/purify.es.mjs @@ -0,0 +1,1747 @@ +/*! @license DOMPurify 3.4.7 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.4.7/LICENSE */ + +function _arrayLikeToArray(r, a) { + (null == a || a > r.length) && (a = r.length); + for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; + return n; +} +function _arrayWithHoles(r) { + if (Array.isArray(r)) return r; +} +function _iterableToArrayLimit(r, l) { + var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; + if (null != t) { + var e, + n, + i, + u, + a = [], + f = true, + o = false; + try { + if (i = (t = t.call(r)).next, 0 === l) ; else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); + } catch (r) { + o = true, n = r; + } finally { + try { + if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; + } finally { + if (o) throw n; + } + } + return a; + } +} +function _nonIterableRest() { + throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); +} +function _slicedToArray(r, e) { + return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); +} +function _unsupportedIterableToArray(r, a) { + if (r) { + if ("string" == typeof r) return _arrayLikeToArray(r, a); + var t = {}.toString.call(r).slice(8, -1); + return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; + } +} + +const entries = Object.entries, + setPrototypeOf = Object.setPrototypeOf, + isFrozen = Object.isFrozen, + getPrototypeOf = Object.getPrototypeOf, + getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor; +let freeze = Object.freeze, + seal = Object.seal, + create = Object.create; // eslint-disable-line import/no-mutable-exports +let _ref = typeof Reflect !== 'undefined' && Reflect, + apply = _ref.apply, + construct = _ref.construct; +if (!freeze) { + freeze = function freeze(x) { + return x; + }; +} +if (!seal) { + seal = function seal(x) { + return x; + }; +} +if (!apply) { + apply = function apply(func, thisArg) { + for (var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) { + args[_key - 2] = arguments[_key]; + } + return func.apply(thisArg, args); + }; +} +if (!construct) { + construct = function construct(Func) { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; + } + return new Func(...args); + }; +} +const arrayForEach = unapply(Array.prototype.forEach); +const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf); +const arrayPop = unapply(Array.prototype.pop); +const arrayPush = unapply(Array.prototype.push); +const arraySplice = unapply(Array.prototype.splice); +const arrayIsArray = Array.isArray; +const stringToLowerCase = unapply(String.prototype.toLowerCase); +const stringToString = unapply(String.prototype.toString); +const stringMatch = unapply(String.prototype.match); +const stringReplace = unapply(String.prototype.replace); +const stringIndexOf = unapply(String.prototype.indexOf); +const stringTrim = unapply(String.prototype.trim); +const numberToString = unapply(Number.prototype.toString); +const booleanToString = unapply(Boolean.prototype.toString); +const bigintToString = typeof BigInt === 'undefined' ? null : unapply(BigInt.prototype.toString); +const symbolToString = typeof Symbol === 'undefined' ? null : unapply(Symbol.prototype.toString); +const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); +const objectToString = unapply(Object.prototype.toString); +const regExpTest = unapply(RegExp.prototype.test); +const typeErrorCreate = unconstruct(TypeError); +/** + * Creates a new function that calls the given function with a specified thisArg and arguments. + * + * @param func - The function to be wrapped and called. + * @returns A new function that calls the given function with a specified thisArg and arguments. + */ +function unapply(func) { + return function (thisArg) { + if (thisArg instanceof RegExp) { + thisArg.lastIndex = 0; + } + for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) { + args[_key3 - 1] = arguments[_key3]; + } + return apply(func, thisArg, args); + }; +} +/** + * Creates a new function that constructs an instance of the given constructor function with the provided arguments. + * + * @param func - The constructor function to be wrapped and called. + * @returns A new function that constructs an instance of the given constructor function with the provided arguments. + */ +function unconstruct(Func) { + return function () { + for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) { + args[_key4] = arguments[_key4]; + } + return construct(Func, args); + }; +} +/** + * Add properties to a lookup table + * + * @param set - The set to which elements will be added. + * @param array - The array containing elements to be added to the set. + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. + * @returns The modified set with added elements. + */ +function addToSet(set, array) { + let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; + if (setPrototypeOf) { + // Make 'in' and truthy checks like Boolean(set.constructor) + // independent of any properties defined on Object.prototype. + // Prevent prototype setters from intercepting set as a this value. + setPrototypeOf(set, null); + } + if (!arrayIsArray(array)) { + return set; + } + let l = array.length; + while (l--) { + let element = array[l]; + if (typeof element === 'string') { + const lcElement = transformCaseFunc(element); + if (lcElement !== element) { + // Config presets (e.g. tags.js, attrs.js) are immutable. + if (!isFrozen(array)) { + array[l] = lcElement; + } + element = lcElement; + } + } + set[element] = true; + } + return set; +} +/** + * Clean up an array to harden against CSPP + * + * @param array - The array to be cleaned. + * @returns The cleaned version of the array + */ +function cleanArray(array) { + for (let index = 0; index < array.length; index++) { + const isPropertyExist = objectHasOwnProperty(array, index); + if (!isPropertyExist) { + array[index] = null; + } + } + return array; +} +/** + * Shallow clone an object + * + * @param object - The object to be cloned. + * @returns A new object that copies the original. + */ +function clone(object) { + const newObject = create(null); + for (const _ref2 of entries(object)) { + var _ref3 = _slicedToArray(_ref2, 2); + const property = _ref3[0]; + const value = _ref3[1]; + const isPropertyExist = objectHasOwnProperty(object, property); + if (isPropertyExist) { + if (arrayIsArray(value)) { + newObject[property] = cleanArray(value); + } else if (value && typeof value === 'object' && value.constructor === Object) { + newObject[property] = clone(value); + } else { + newObject[property] = value; + } + } + } + return newObject; +} +/** + * Convert non-node values into strings without depending on direct property access. + * + * @param value - The value to stringify. + * @returns A string representation of the provided value. + */ +function stringifyValue(value) { + switch (typeof value) { + case 'string': + { + return value; + } + case 'number': + { + return numberToString(value); + } + case 'boolean': + { + return booleanToString(value); + } + case 'bigint': + { + return bigintToString ? bigintToString(value) : '0'; + } + case 'symbol': + { + return symbolToString ? symbolToString(value) : 'Symbol()'; + } + case 'undefined': + { + return objectToString(value); + } + case 'function': + case 'object': + { + if (value === null) { + return objectToString(value); + } + const valueAsRecord = value; + const valueToString = lookupGetter(valueAsRecord, 'toString'); + if (typeof valueToString === 'function') { + const stringified = valueToString(valueAsRecord); + return typeof stringified === 'string' ? stringified : objectToString(stringified); + } + return objectToString(value); + } + default: + { + return objectToString(value); + } + } +} +/** + * This method automatically checks if the prop is function or getter and behaves accordingly. + * + * @param object - The object to look up the getter function in its prototype chain. + * @param prop - The property name for which to find the getter function. + * @returns The getter function found in the prototype chain or a fallback function. + */ +function lookupGetter(object, prop) { + while (object !== null) { + const desc = getOwnPropertyDescriptor(object, prop); + if (desc) { + if (desc.get) { + return unapply(desc.get); + } + if (typeof desc.value === 'function') { + return unapply(desc.value); + } + } + object = getPrototypeOf(object); + } + function fallbackValue() { + return null; + } + return fallbackValue; +} +function isRegex(value) { + try { + regExpTest(value, ''); + return true; + } catch (_unused) { + return false; + } +} + +const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'search', 'section', 'select', 'shadow', 'slot', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); +const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'enterkeyhint', 'exportparts', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'inputmode', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'part', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); +const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); +// List of SVG elements that are disallowed by default. +// We still need to know them so that we can do namespace +// checks properly in case one wants to add them to +// allow-list. +const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); +const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); +// Similarly to SVG, we want to know all MathML elements, +// even those that we disallow by default. +const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); +const text = freeze(['#text']); + +const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'command', 'commandfor', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'exportparts', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inert', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'part', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'slot', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns']); +const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'exponent', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'intercept', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'mask-type', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'slope', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']); +const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnalign', 'columnlines', 'columnspacing', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lquote', 'lspace', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']); +const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']); + +const MUSTACHE_EXPR = seal(/{{[\w\W]*|^[\w\W]*}}/g); +const ERB_EXPR = seal(/<%[\w\W]*|^[\w\W]*%>/g); +const TMPLIT_EXPR = seal(/\${[\w\W]*/g); +const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape +const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape +const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape +); +const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i); +const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex +); +const DOCTYPE_NAME = seal(/^html$/i); +const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i); + +/* eslint-disable @typescript-eslint/indent */ +// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType +const NODE_TYPE = { + element: 1, + attribute: 2, + text: 3, + cdataSection: 4, + entityReference: 5, + // Deprecated + entityNode: 6, + // Deprecated + progressingInstruction: 7, + comment: 8, + document: 9, + documentType: 10, + documentFragment: 11, + notation: 12 // Deprecated +}; +const getGlobal = function getGlobal() { + return typeof window === 'undefined' ? null : window; +}; +/** + * Creates a no-op policy for internal use only. + * Don't export this function outside this module! + * @param trustedTypes The policy factory. + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). + * @return The policy created (or null, if Trusted Types + * are not supported or creating the policy failed). + */ +const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { + if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { + return null; + } + // Allow the callers to control the unique policy name + // by adding a data-tt-policy-suffix to the script element with the DOMPurify. + // Policy creation with duplicate names throws in Trusted Types. + let suffix = null; + const ATTR_NAME = 'data-tt-policy-suffix'; + if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) { + suffix = purifyHostElement.getAttribute(ATTR_NAME); + } + const policyName = 'dompurify' + (suffix ? '#' + suffix : ''); + try { + return trustedTypes.createPolicy(policyName, { + createHTML(html) { + return html; + }, + createScriptURL(scriptUrl) { + return scriptUrl; + } + }); + } catch (_) { + // Policy creation failed (most likely another DOMPurify script has + // already run). Skip creating the policy, as this will only cause errors + // if TT are enforced. + console.warn('TrustedTypes policy ' + policyName + ' could not be created.'); + return null; + } +}; +const _createHooksMap = function _createHooksMap() { + return { + afterSanitizeAttributes: [], + afterSanitizeElements: [], + afterSanitizeShadowDOM: [], + beforeSanitizeAttributes: [], + beforeSanitizeElements: [], + beforeSanitizeShadowDOM: [], + uponSanitizeAttribute: [], + uponSanitizeElement: [], + uponSanitizeShadowNode: [] + }; +}; +function createDOMPurify() { + let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); + const DOMPurify = root => createDOMPurify(root); + DOMPurify.version = '3.4.7'; + DOMPurify.removed = []; + if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) { + // Not running in a browser, provide a factory function + // so that you can pass your own Window + DOMPurify.isSupported = false; + return DOMPurify; + } + let document = window.document; + const originalDocument = document; + const currentScript = originalDocument.currentScript; + window.DocumentFragment; + const HTMLTemplateElement = window.HTMLTemplateElement, + Node = window.Node, + Element = window.Element, + NodeFilter = window.NodeFilter, + _window$NamedNodeMap = window.NamedNodeMap; + _window$NamedNodeMap === void 0 ? window.NamedNodeMap || window.MozNamedAttrMap : _window$NamedNodeMap; + window.HTMLFormElement; + const DOMParser = window.DOMParser, + trustedTypes = window.trustedTypes; + const ElementPrototype = Element.prototype; + const cloneNode = lookupGetter(ElementPrototype, 'cloneNode'); + const remove = lookupGetter(ElementPrototype, 'remove'); + const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); + const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); + const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); + const getShadowRoot = lookupGetter(ElementPrototype, 'shadowRoot'); + const getAttributes = lookupGetter(ElementPrototype, 'attributes'); + const getNodeType = Node && Node.prototype ? lookupGetter(Node.prototype, 'nodeType') : null; + const getNodeName = Node && Node.prototype ? lookupGetter(Node.prototype, 'nodeName') : null; + // As per issue #47, the web-components registry is inherited by a + // new document created via createHTMLDocument. As per the spec + // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) + // a new empty registry is used when creating a template contents owner + // document, so we use that as our parent document to ensure nothing + // is inherited. + if (typeof HTMLTemplateElement === 'function') { + const template = document.createElement('template'); + if (template.content && template.content.ownerDocument) { + document = template.content.ownerDocument; + } + } + let trustedTypesPolicy; + let emptyHTML = ''; + const _document = document, + implementation = _document.implementation, + createNodeIterator = _document.createNodeIterator, + createDocumentFragment = _document.createDocumentFragment, + getElementsByTagName = _document.getElementsByTagName; + const importNode = originalDocument.importNode; + let hooks = _createHooksMap(); + /** + * Expose whether this browser supports running the full DOMPurify. + */ + DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined; + const MUSTACHE_EXPR$1 = MUSTACHE_EXPR, + ERB_EXPR$1 = ERB_EXPR, + TMPLIT_EXPR$1 = TMPLIT_EXPR, + DATA_ATTR$1 = DATA_ATTR, + ARIA_ATTR$1 = ARIA_ATTR, + IS_SCRIPT_OR_DATA$1 = IS_SCRIPT_OR_DATA, + ATTR_WHITESPACE$1 = ATTR_WHITESPACE, + CUSTOM_ELEMENT$1 = CUSTOM_ELEMENT; + let IS_ALLOWED_URI$1 = IS_ALLOWED_URI; + /** + * We consider the elements and attributes below to be safe. Ideally + * don't add any new ones but feel free to remove unwanted ones. + */ + /* allowed element names */ + let ALLOWED_TAGS = null; + const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); + /* Allowed attribute names */ + let ALLOWED_ATTR = null; + const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); + /* + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. + * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) + * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) + * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. + */ + let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, { + tagNameCheck: { + writable: true, + configurable: false, + enumerable: true, + value: null + }, + attributeNameCheck: { + writable: true, + configurable: false, + enumerable: true, + value: null + }, + allowCustomizedBuiltInElements: { + writable: true, + configurable: false, + enumerable: true, + value: false + } + })); + /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ + let FORBID_TAGS = null; + /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ + let FORBID_ATTR = null; + /* Config object to store ADD_TAGS/ADD_ATTR functions (when used as functions) */ + const EXTRA_ELEMENT_HANDLING = Object.seal(create(null, { + tagCheck: { + writable: true, + configurable: false, + enumerable: true, + value: null + }, + attributeCheck: { + writable: true, + configurable: false, + enumerable: true, + value: null + } + })); + /* Decide if ARIA attributes are okay */ + let ALLOW_ARIA_ATTR = true; + /* Decide if custom data attributes are okay */ + let ALLOW_DATA_ATTR = true; + /* Decide if unknown protocols are okay */ + let ALLOW_UNKNOWN_PROTOCOLS = false; + /* Decide if self-closing tags in attributes are allowed. + * Usually removed due to a mXSS issue in jQuery 3.0 */ + let ALLOW_SELF_CLOSE_IN_ATTR = true; + /* Output should be safe for common template engines. + * This means, DOMPurify removes data attributes, mustaches and ERB + */ + let SAFE_FOR_TEMPLATES = false; + /* Output should be safe even for XML used within HTML and alike. + * This means, DOMPurify removes comments when containing risky content. + */ + let SAFE_FOR_XML = true; + /* Decide if document with ... should be returned */ + let WHOLE_DOCUMENT = false; + /* Track whether config is already set on this instance of DOMPurify. */ + let SET_CONFIG = false; + /* Decide if all elements (e.g. style, script) must be children of + * document.body. By default, browsers might move them to document.head */ + let FORCE_BODY = false; + /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html + * string (or a TrustedHTML object if Trusted Types are supported). + * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead + */ + let RETURN_DOM = false; + /* Decide if a DOM `DocumentFragment` should be returned, instead of a html + * string (or a TrustedHTML object if Trusted Types are supported) */ + let RETURN_DOM_FRAGMENT = false; + /* Try to return a Trusted Type object instead of a string, return a string in + * case Trusted Types are not supported */ + let RETURN_TRUSTED_TYPE = false; + /* Output should be free from DOM clobbering attacks? + * This sanitizes markups named with colliding, clobberable built-in DOM APIs. + */ + let SANITIZE_DOM = true; + /* Achieve full DOM Clobbering protection by isolating the namespace of named + * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. + * + * HTML/DOM spec rules that enable DOM Clobbering: + * - Named Access on Window (§7.3.3) + * - DOM Tree Accessors (§3.1.5) + * - Form Element Parent-Child Relations (§4.10.3) + * - Iframe srcdoc / Nested WindowProxies (§4.8.5) + * - HTMLCollection (§4.2.10.2) + * + * Namespace isolation is implemented by prefixing `id` and `name` attributes + * with a constant string, i.e., `user-content-` + */ + let SANITIZE_NAMED_PROPS = false; + const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; + /* Keep element content when removing element? */ + let KEEP_CONTENT = true; + /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead + * of importing it into a new Document and returning a sanitized copy */ + let IN_PLACE = false; + /* Allow usage of profiles like html, svg and mathMl */ + let USE_PROFILES = {}; + /* Tags to ignore content of when KEEP_CONTENT is true */ + let FORBID_CONTENTS = null; + const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); + /* Tags that are safe for data: URIs */ + let DATA_URI_TAGS = null; + const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); + /* Attributes safe for values like "javascript:" */ + let URI_SAFE_ATTRIBUTES = null; + const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); + const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML'; + const SVG_NAMESPACE = 'http://www.w3.org/2000/svg'; + const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml'; + /* Document namespace */ + let NAMESPACE = HTML_NAMESPACE; + let IS_EMPTY_INPUT = false; + /* Allowed XHTML+XML namespaces */ + let ALLOWED_NAMESPACES = null; + const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); + // Certain elements are allowed in both SVG and HTML + // namespace. We need to specify them explicitly + // so that they don't get erroneously deleted from + // HTML namespace. + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); + /* Parsing of strict XHTML documents */ + let PARSER_MEDIA_TYPE = null; + const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; + const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; + let transformCaseFunc = null; + /* Keep a reference to config to pass to hooks */ + let CONFIG = null; + /* Ideally, do not touch anything below this line */ + /* ______________________________________________ */ + const formElement = document.createElement('form'); + const isRegexOrFunction = function isRegexOrFunction(testValue) { + return testValue instanceof RegExp || testValue instanceof Function; + }; + /** + * _parseConfig + * + * @param cfg optional config literal + */ + // eslint-disable-next-line complexity + const _parseConfig = function _parseConfig() { + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + if (CONFIG && CONFIG === cfg) { + return; + } + /* Shield configuration object from tampering */ + if (!cfg || typeof cfg !== 'object') { + cfg = {}; + } + /* Shield configuration object from prototype pollution */ + cfg = clone(cfg); + PARSER_MEDIA_TYPE = + // eslint-disable-next-line unicorn/prefer-includes + SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; + // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. + transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; + /* Set configuration parameters */ + ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') && arrayIsArray(cfg.ALLOWED_TAGS) ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; + ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') && arrayIsArray(cfg.ALLOWED_ATTR) ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; + ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') && arrayIsArray(cfg.ALLOWED_NAMESPACES) ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; + URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') && arrayIsArray(cfg.ADD_URI_SAFE_ATTR) ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; + DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') && arrayIsArray(cfg.ADD_DATA_URI_TAGS) ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; + FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') && arrayIsArray(cfg.FORBID_CONTENTS) ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; + FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') && arrayIsArray(cfg.FORBID_TAGS) ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : clone({}); + FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') && arrayIsArray(cfg.FORBID_ATTR) ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : clone({}); + USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES && typeof cfg.USE_PROFILES === 'object' ? clone(cfg.USE_PROFILES) : cfg.USE_PROFILES : false; + ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true + ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true + ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false + ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true + SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false + SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true + WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false + RETURN_DOM = cfg.RETURN_DOM || false; // Default false + RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false + RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false + FORCE_BODY = cfg.FORCE_BODY || false; // Default false + SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true + SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false + KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true + IN_PLACE = cfg.IN_PLACE || false; // Default false + IS_ALLOWED_URI$1 = isRegex(cfg.ALLOWED_URI_REGEXP) ? cfg.ALLOWED_URI_REGEXP : IS_ALLOWED_URI; // Default regexp + NAMESPACE = typeof cfg.NAMESPACE === 'string' ? cfg.NAMESPACE : HTML_NAMESPACE; // Default HTML namespace + MATHML_TEXT_INTEGRATION_POINTS = objectHasOwnProperty(cfg, 'MATHML_TEXT_INTEGRATION_POINTS') && cfg.MATHML_TEXT_INTEGRATION_POINTS && typeof cfg.MATHML_TEXT_INTEGRATION_POINTS === 'object' ? clone(cfg.MATHML_TEXT_INTEGRATION_POINTS) : addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); // Default built-in map + HTML_INTEGRATION_POINTS = objectHasOwnProperty(cfg, 'HTML_INTEGRATION_POINTS') && cfg.HTML_INTEGRATION_POINTS && typeof cfg.HTML_INTEGRATION_POINTS === 'object' ? clone(cfg.HTML_INTEGRATION_POINTS) : addToSet({}, ['annotation-xml']); // Default built-in map + const customElementHandling = objectHasOwnProperty(cfg, 'CUSTOM_ELEMENT_HANDLING') && cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING === 'object' ? clone(cfg.CUSTOM_ELEMENT_HANDLING) : create(null); + CUSTOM_ELEMENT_HANDLING = create(null); + if (objectHasOwnProperty(customElementHandling, 'tagNameCheck') && isRegexOrFunction(customElementHandling.tagNameCheck)) { + CUSTOM_ELEMENT_HANDLING.tagNameCheck = customElementHandling.tagNameCheck; // Default undefined + } + if (objectHasOwnProperty(customElementHandling, 'attributeNameCheck') && isRegexOrFunction(customElementHandling.attributeNameCheck)) { + CUSTOM_ELEMENT_HANDLING.attributeNameCheck = customElementHandling.attributeNameCheck; // Default undefined + } + if (objectHasOwnProperty(customElementHandling, 'allowCustomizedBuiltInElements') && typeof customElementHandling.allowCustomizedBuiltInElements === 'boolean') { + CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = customElementHandling.allowCustomizedBuiltInElements; // Default undefined + } + if (SAFE_FOR_TEMPLATES) { + ALLOW_DATA_ATTR = false; + } + if (RETURN_DOM_FRAGMENT) { + RETURN_DOM = true; + } + /* Parse profile info */ + if (USE_PROFILES) { + ALLOWED_TAGS = addToSet({}, text); + ALLOWED_ATTR = create(null); + if (USE_PROFILES.html === true) { + addToSet(ALLOWED_TAGS, html$1); + addToSet(ALLOWED_ATTR, html); + } + if (USE_PROFILES.svg === true) { + addToSet(ALLOWED_TAGS, svg$1); + addToSet(ALLOWED_ATTR, svg); + addToSet(ALLOWED_ATTR, xml); + } + if (USE_PROFILES.svgFilters === true) { + addToSet(ALLOWED_TAGS, svgFilters); + addToSet(ALLOWED_ATTR, svg); + addToSet(ALLOWED_ATTR, xml); + } + if (USE_PROFILES.mathMl === true) { + addToSet(ALLOWED_TAGS, mathMl$1); + addToSet(ALLOWED_ATTR, mathMl); + addToSet(ALLOWED_ATTR, xml); + } + } + /* Always reset function-based ADD_TAGS / ADD_ATTR checks to prevent + * leaking across calls when switching from function to array config */ + EXTRA_ELEMENT_HANDLING.tagCheck = null; + EXTRA_ELEMENT_HANDLING.attributeCheck = null; + /* Merge configuration parameters */ + if (objectHasOwnProperty(cfg, 'ADD_TAGS')) { + if (typeof cfg.ADD_TAGS === 'function') { + EXTRA_ELEMENT_HANDLING.tagCheck = cfg.ADD_TAGS; + } else if (arrayIsArray(cfg.ADD_TAGS)) { + if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { + ALLOWED_TAGS = clone(ALLOWED_TAGS); + } + addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); + } + } + if (objectHasOwnProperty(cfg, 'ADD_ATTR')) { + if (typeof cfg.ADD_ATTR === 'function') { + EXTRA_ELEMENT_HANDLING.attributeCheck = cfg.ADD_ATTR; + } else if (arrayIsArray(cfg.ADD_ATTR)) { + if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) { + ALLOWED_ATTR = clone(ALLOWED_ATTR); + } + addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc); + } + } + if (objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') && arrayIsArray(cfg.ADD_URI_SAFE_ATTR)) { + addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc); + } + if (objectHasOwnProperty(cfg, 'FORBID_CONTENTS') && arrayIsArray(cfg.FORBID_CONTENTS)) { + if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) { + FORBID_CONTENTS = clone(FORBID_CONTENTS); + } + addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); + } + if (objectHasOwnProperty(cfg, 'ADD_FORBID_CONTENTS') && arrayIsArray(cfg.ADD_FORBID_CONTENTS)) { + if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) { + FORBID_CONTENTS = clone(FORBID_CONTENTS); + } + addToSet(FORBID_CONTENTS, cfg.ADD_FORBID_CONTENTS, transformCaseFunc); + } + /* Add #text in case KEEP_CONTENT is set to true */ + if (KEEP_CONTENT) { + ALLOWED_TAGS['#text'] = true; + } + /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ + if (WHOLE_DOCUMENT) { + addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); + } + /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ + if (ALLOWED_TAGS.table) { + addToSet(ALLOWED_TAGS, ['tbody']); + delete FORBID_TAGS.tbody; + } + if (cfg.TRUSTED_TYPES_POLICY) { + if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') { + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.'); + } + if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); + } + // Overwrite existing TrustedTypes policy. + trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; + // Sign local variables required by `sanitize`. + emptyHTML = trustedTypesPolicy.createHTML(''); + } else { + // Uninitialized policy, attempt to initialize the internal dompurify policy. + if (trustedTypesPolicy === undefined) { + trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); + } + // If creating the internal policy succeeded sign internal variables. + if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { + emptyHTML = trustedTypesPolicy.createHTML(''); + } + } + /* + * Mirror the clone-before-mutate pattern already applied above for + * cfg.ADD_TAGS / cfg.ADD_ATTR: if any uponSanitize* hook is + * registered AND the set still points at the default constant, + * clone it. The hook then mutates the clone (in-call widening + * still works exactly as documented) and the next default-cfg + * call rebinds to the untouched original via the reassignment at + * the top of this function. + */ + if ((hooks.uponSanitizeElement.length > 0 || hooks.uponSanitizeAttribute.length > 0) && ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { + ALLOWED_TAGS = clone(ALLOWED_TAGS); + } + if (hooks.uponSanitizeAttribute.length > 0 && ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) { + ALLOWED_ATTR = clone(ALLOWED_ATTR); + } + // Prevent further manipulation of configuration. + // Not available in IE8, Safari 5, etc. + if (freeze) { + freeze(cfg); + } + CONFIG = cfg; + }; + /* Keep track of all possible SVG and MathML tags + * so that we can perform the namespace checks + * correctly. */ + const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); + const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); + /** + * @param element a DOM element whose namespace is being checked + * @returns Return false if the element has a + * namespace that a spec-compliant parser would never + * return. Return true otherwise. + */ + const _checkValidNamespace = function _checkValidNamespace(element) { + let parent = getParentNode(element); + // In JSDOM, if we're inside shadow DOM, then parentNode + // can be null. We just simulate parent in this case. + if (!parent || !parent.tagName) { + parent = { + namespaceURI: NAMESPACE, + tagName: 'template' + }; + } + const tagName = stringToLowerCase(element.tagName); + const parentTagName = stringToLowerCase(parent.tagName); + if (!ALLOWED_NAMESPACES[element.namespaceURI]) { + return false; + } + if (element.namespaceURI === SVG_NAMESPACE) { + // The only way to switch from HTML namespace to SVG + // is via . If it happens via any other tag, then + // it should be killed. + if (parent.namespaceURI === HTML_NAMESPACE) { + return tagName === 'svg'; + } + // The only way to switch from MathML to SVG is via` + // svg if parent is either or MathML + // text integration points. + if (parent.namespaceURI === MATHML_NAMESPACE) { + return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); + } + // We only allow elements that are defined in SVG + // spec. All others are disallowed in SVG namespace. + return Boolean(ALL_SVG_TAGS[tagName]); + } + if (element.namespaceURI === MATHML_NAMESPACE) { + // The only way to switch from HTML namespace to MathML + // is via . If it happens via any other tag, then + // it should be killed. + if (parent.namespaceURI === HTML_NAMESPACE) { + return tagName === 'math'; + } + // The only way to switch from SVG to MathML is via + // and HTML integration points + if (parent.namespaceURI === SVG_NAMESPACE) { + return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; + } + // We only allow elements that are defined in MathML + // spec. All others are disallowed in MathML namespace. + return Boolean(ALL_MATHML_TAGS[tagName]); + } + if (element.namespaceURI === HTML_NAMESPACE) { + // The only way to switch from SVG to HTML is via + // HTML integration points, and from MathML to HTML + // is via MathML text integration points + if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) { + return false; + } + if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { + return false; + } + // We disallow tags that are specific for MathML + // or SVG and should never appear in HTML namespace + return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); + } + // For XHTML and XML documents that support custom namespaces + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { + return true; + } + // The code should never reach this place (this means + // that the element somehow got namespace that is not + // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). + // Return false just in case. + return false; + }; + /** + * _forceRemove + * + * @param node a DOM node + */ + const _forceRemove = function _forceRemove(node) { + arrayPush(DOMPurify.removed, { + element: node + }); + try { + // eslint-disable-next-line unicorn/prefer-dom-node-remove + getParentNode(node).removeChild(node); + } catch (_) { + remove(node); + } + }; + /** + * _removeAttribute + * + * @param name an Attribute name + * @param element a DOM node + */ + const _removeAttribute = function _removeAttribute(name, element) { + try { + arrayPush(DOMPurify.removed, { + attribute: element.getAttributeNode(name), + from: element + }); + } catch (_) { + arrayPush(DOMPurify.removed, { + attribute: null, + from: element + }); + } + element.removeAttribute(name); + // We void attribute values for unremovable "is" attributes + if (name === 'is') { + if (RETURN_DOM || RETURN_DOM_FRAGMENT) { + try { + _forceRemove(element); + } catch (_) {} + } else { + try { + element.setAttribute(name, ''); + } catch (_) {} + } + } + }; + /** + * _initDocument + * + * @param dirty - a string of dirty markup + * @return a DOM, filled with the dirty markup + */ + const _initDocument = function _initDocument(dirty) { + /* Create a HTML document */ + let doc = null; + let leadingWhitespace = null; + if (FORCE_BODY) { + dirty = '' + dirty; + } else { + /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */ + const matches = stringMatch(dirty, /^[\r\n\t ]+/); + leadingWhitespace = matches && matches[0]; + } + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) { + // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict) + dirty = '' + dirty + ''; + } + const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty; + /* + * Use the DOMParser API by default, fallback later if needs be + * DOMParser not work for svg when has multiple root element. + */ + if (NAMESPACE === HTML_NAMESPACE) { + try { + doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); + } catch (_) {} + } + /* Use createHTMLDocument in case DOMParser is not available */ + if (!doc || !doc.documentElement) { + doc = implementation.createDocument(NAMESPACE, 'template', null); + try { + doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload; + } catch (_) { + // Syntax error if dirtyPayload is invalid xml + } + } + const body = doc.body || doc.documentElement; + if (dirty && leadingWhitespace) { + body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); + } + /* Work on whole document or just its body */ + if (NAMESPACE === HTML_NAMESPACE) { + return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; + } + return WHOLE_DOCUMENT ? doc.documentElement : body; + }; + /** + * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. + * + * @param root The root element or node to start traversing on. + * @return The created NodeIterator + */ + const _createNodeIterator = function _createNodeIterator(root) { + return createNodeIterator.call(root.ownerDocument || root, root, + // eslint-disable-next-line no-bitwise + NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); + }; + /** + * Strip template-engine expressions ({{...}}, ${...}, <%...%>) from the + * character data of an element subtree. Used as the final safety net for + * SAFE_FOR_TEMPLATES on every DOM-returning code path so that expressions + * which only form after text-node normalization (e.g. fragments split across + * stripped elements) cannot survive into a template-evaluating framework. + * + * Walks text/comment/CDATA/processing-instruction nodes and mutates `.data` + * in place rather than round-tripping through innerHTML. This preserves + * descendant node references (important for IN_PLACE callers), avoids a + * serialize/reparse cycle, and reads literal character data — which means + * `<%...%>` in text content matches the ERB regex against its real bytes + * instead of the HTML-entity-escaped form innerHTML would produce. + * + * Attribute values are not visited here; SAFE_FOR_TEMPLATES handling for + * attributes is performed during the per-node `_sanitizeAttributes` pass. + * + * @param node The root element whose character data should be scrubbed. + */ + const _scrubTemplateExpressions = function _scrubTemplateExpressions(node) { + node.normalize(); + const walker = createNodeIterator.call(node.ownerDocument || node, node, + // eslint-disable-next-line no-bitwise + NodeFilter.SHOW_TEXT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_CDATA_SECTION | NodeFilter.SHOW_PROCESSING_INSTRUCTION, null); + let currentNode = walker.nextNode(); + while (currentNode) { + let data = currentNode.data; + arrayForEach([MUSTACHE_EXPR$1, ERB_EXPR$1, TMPLIT_EXPR$1], expr => { + data = stringReplace(data, expr, ' '); + }); + currentNode.data = data; + currentNode = walker.nextNode(); + } + }; + /** + * _isClobbered + * + * Detect DOM-clobbering on HTMLFormElement nodes. Form is the only HTML + * interface with [LegacyOverrideBuiltIns]; a descendant element with a + * `name` attribute matching a prototype property shadows that property + * on direct reads. We use this check at the IN_PLACE entry-point and + * during attribute sanitization to refuse clobbered forms. + * + * @param element element to check for clobbering attacks + * @return true if clobbered, false if safe + */ + const _isClobbered = function _isClobbered(element) { + // Realm-independent tag-name probe. If we can't determine the tag + // name at all, we can't reason about clobbering — return false + // (the caller's other defences still apply). + const realTagName = getNodeName ? getNodeName(element) : null; + if (typeof realTagName !== 'string') { + return false; + } + if (transformCaseFunc(realTagName) !== 'form') { + return false; + } + return typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || + // Realm-safe NamedNodeMap detection: equality against the cached + // prototype getter. Clobbered .attributes (e.g. ) + // makes the direct read diverge from the cached read; a clean form + // (same-realm OR foreign-realm) has both reads pointing at the same + // canonical NamedNodeMap. + element.attributes !== getAttributes(element) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function' || + // NodeType clobbering probe. Cached Node.prototype.nodeType getter + // returns the integer 1 for any Element regardless of realm; direct + // read on a clobbered form (e.g. ) returns + // the named child element. Cheap addition — nodeType is read from + // an internal slot, no serialization cost — and removes a residual + // clobbering surface used by several mXSS / PI / comment branches + // in _sanitizeElements that compare currentNode.nodeType directly. + element.nodeType !== getNodeType(element) || + // HTMLFormElement has [LegacyOverrideBuiltIns]: a descendant named + // "childNodes" shadows the prototype getter. Direct reads of + // form.childNodes from a clobbered form return the named child + // instead of the real NodeList, so any walk that reads it directly + // skips the form's real children. Compare the direct read to the + // cached Node.prototype getter — when the form's named-property + // getter intercepts the read, the two values differ and we flag + // the form. This catches every clobbering child type (input, + // select, etc.) regardless of whether the named child happens to + // carry a numeric .length, which a typeof-based probe would miss + // (e.g. HTMLSelectElement.length is a defined unsigned-long). + element.childNodes !== getChildNodes(element); + }; + /** + * Checks whether the given value is a DocumentFragment from any realm. + * + * The realm-independent replacement reads `nodeType` through the cached + * Node.prototype getter and compares to the DOCUMENT_FRAGMENT_NODE + * constant (11). nodeType is a numeric value resolved from the node's + * internal slot, identical across realms for the same kind of node. + * + * @param value object to check + * @return true if value is a DocumentFragment-shaped node from any realm + */ + const _isDocumentFragment = function _isDocumentFragment(value) { + if (!getNodeType || typeof value !== 'object' || value === null) { + return false; + } + try { + return getNodeType(value) === NODE_TYPE.documentFragment; + } catch (_) { + return false; + } + }; + /** + * Checks whether the given object is a DOM node, including nodes that + * originate from a different window/realm (e.g. an iframe's + * contentDocument). The previous `value instanceof Node` check was + * realm-bound: nodes from a different window failed it, causing + * sanitize() to silently stringify them and reset IN_PLACE to false, + * returning the original node unsanitized. See GHSA-4w3q-35jp-p934. + * + * @param value object to check whether it's a DOM node + * @return true if value is a DOM node from any realm + */ + const _isNode = function _isNode(value) { + if (!getNodeType || typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof getNodeType(value) === 'number'; + } catch (_) { + return false; + } + }; + function _executeHooks(hooks, currentNode, data) { + arrayForEach(hooks, hook => { + hook.call(DOMPurify, currentNode, data, CONFIG); + }); + } + /** + * _sanitizeElements + * + * @protect nodeName + * @protect textContent + * @protect removeChild + * @param currentNode to check for permission to exist + * @return true if node was killed, false if left alive + */ + const _sanitizeElements = function _sanitizeElements(currentNode) { + let content = null; + /* Execute a hook if present */ + _executeHooks(hooks.beforeSanitizeElements, currentNode, null); + /* Check if element is clobbered or can clobber */ + if (_isClobbered(currentNode)) { + _forceRemove(currentNode); + return true; + } + /* Now let's check the element's type and name */ + const tagName = transformCaseFunc(currentNode.nodeName); + /* Execute a hook if present */ + _executeHooks(hooks.uponSanitizeElement, currentNode, { + tagName, + allowedTags: ALLOWED_TAGS + }); + /* Detect mXSS attempts abusing namespace confusion */ + if (SAFE_FOR_XML && currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w!]/g, currentNode.innerHTML) && regExpTest(/<[/\w!]/g, currentNode.textContent)) { + _forceRemove(currentNode); + return true; + } + /* Remove risky CSS construction leading to mXSS */ + if (SAFE_FOR_XML && currentNode.namespaceURI === HTML_NAMESPACE && tagName === 'style' && _isNode(currentNode.firstElementChild)) { + _forceRemove(currentNode); + return true; + } + /* Remove any occurrence of processing instructions */ + if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { + _forceRemove(currentNode); + return true; + } + /* Remove any kind of possibly harmful comments */ + if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { + _forceRemove(currentNode); + return true; + } + /* Remove element if anything forbids its presence */ + if (FORBID_TAGS[tagName] || !(EXTRA_ELEMENT_HANDLING.tagCheck instanceof Function && EXTRA_ELEMENT_HANDLING.tagCheck(tagName)) && !ALLOWED_TAGS[tagName]) { + /* Check if we have a custom element to handle */ + if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) { + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) { + return false; + } + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) { + return false; + } + } + /* Keep content except for bad-listed elements. + Use the cached prototype getters exclusively — the previous code + had `|| currentNode.parentNode` / `|| currentNode.childNodes` + fallbacks, but the cached getters always return the canonical + value (or null for a real parent-less node), so the fallback + path was dead in safe cases and a clobbering surface in unsafe + ones. Falsy cached results stay falsy; the `if (childNodes && + parentNode)` check already gates correctly. */ + if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { + const parentNode = getParentNode(currentNode); + const childNodes = getChildNodes(currentNode); + if (childNodes && parentNode) { + const childCount = childNodes.length; + for (let i = childCount - 1; i >= 0; --i) { + const childClone = cloneNode(childNodes[i], true); + parentNode.insertBefore(childClone, getNextSibling(currentNode)); + } + } + } + _forceRemove(currentNode); + return true; + } + /* Check whether element has a valid namespace. + Realm-safe check (GHSA-hpcv-96wg-7vj8): use the cached Node.prototype + nodeType getter rather than `instanceof Element`, which is realm- + bound and short-circuits to false for any node minted in a different + realm — letting a foreign-realm element with a forbidden namespace + slip past the namespace check entirely. */ + const nt = getNodeType ? getNodeType(currentNode) : currentNode.nodeType; + if (nt === NODE_TYPE.element && !_checkValidNamespace(currentNode)) { + _forceRemove(currentNode); + return true; + } + /* Make sure that older browsers don't get fallback-tag mXSS */ + if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { + _forceRemove(currentNode); + return true; + } + /* Sanitize element content to be template-safe */ + if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { + /* Get the element's text content */ + content = currentNode.textContent; + arrayForEach([MUSTACHE_EXPR$1, ERB_EXPR$1, TMPLIT_EXPR$1], expr => { + content = stringReplace(content, expr, ' '); + }); + if (currentNode.textContent !== content) { + arrayPush(DOMPurify.removed, { + element: currentNode.cloneNode() + }); + currentNode.textContent = content; + } + } + /* Execute a hook if present */ + _executeHooks(hooks.afterSanitizeElements, currentNode, null); + return false; + }; + /** + * _isValidAttribute + * + * @param lcTag Lowercase tag name of containing element. + * @param lcName Lowercase attribute name. + * @param value Attribute value. + * @return Returns true if `value` is valid, otherwise false. + */ + // eslint-disable-next-line complexity + const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { + /* FORBID_ATTR must always win, even if ADD_ATTR predicate would allow it */ + if (FORBID_ATTR[lcName]) { + return false; + } + /* Make sure attribute cannot clobber */ + if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { + return false; + } + const nameIsPermitted = ALLOWED_ATTR[lcName] || EXTRA_ELEMENT_HANDLING.attributeCheck instanceof Function && EXTRA_ELEMENT_HANDLING.attributeCheck(lcName, lcTag); + /* Allow valid data-* attributes: At least one character after "-" + (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) + XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) + We don't need to check the value; it's always URI safe. */ + if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR$1, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR$1, lcName)) ; else if (!nameIsPermitted || FORBID_ATTR[lcName]) { + if ( + // First condition does a very basic check if a) it's basically a valid custom element tagname AND + // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck + // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck + _isBasicCustomElement(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName, lcTag)) || + // Alternative, second condition checks if it's an `is`-attribute, AND + // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck + lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else { + return false; + } + /* Check value is safe. First, is attr inert? If so, is safe */ + } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE$1, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA$1, stringReplace(value, ATTR_WHITESPACE$1, ''))) ; else if (value) { + return false; + } else ; + return true; + }; + /* Names the HTML spec reserves from valid-custom-element-name; these must + * never be treated as basic custom elements even when a permissive + * CUSTOM_ELEMENT_HANDLING.tagNameCheck is configured. */ + const RESERVED_CUSTOM_ELEMENT_NAMES = addToSet({}, ['annotation-xml', 'color-profile', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'missing-glyph']); + /** + * _isBasicCustomElement + * checks if at least one dash is included in tagName, and it's not the first char + * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name + * + * @param tagName name of the tag of the node to sanitize + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. + */ + const _isBasicCustomElement = function _isBasicCustomElement(tagName) { + return !RESERVED_CUSTOM_ELEMENT_NAMES[stringToLowerCase(tagName)] && regExpTest(CUSTOM_ELEMENT$1, tagName); + }; + /** + * _sanitizeAttributes + * + * @protect attributes + * @protect nodeName + * @protect removeAttribute + * @protect setAttribute + * + * @param currentNode to sanitize + */ + const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { + /* Execute a hook if present */ + _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null); + const attributes = currentNode.attributes; + /* Check if we have attributes; if not we might have a text node */ + if (!attributes || _isClobbered(currentNode)) { + return; + } + const hookEvent = { + attrName: '', + attrValue: '', + keepAttr: true, + allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined + }; + let l = attributes.length; + /* Go backwards over all attributes; safely remove bad ones */ + while (l--) { + const attr = attributes[l]; + const name = attr.name, + namespaceURI = attr.namespaceURI, + attrValue = attr.value; + const lcName = transformCaseFunc(name); + const initValue = attrValue; + let value = name === 'value' ? initValue : stringTrim(initValue); + /* Execute a hook if present */ + hookEvent.attrName = lcName; + hookEvent.attrValue = value; + hookEvent.keepAttr = true; + hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set + _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent); + value = hookEvent.attrValue; + /* Full DOM Clobbering protection via namespace isolation, + * Prefix id and name attributes with `user-content-` + */ + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name') && stringIndexOf(value, SANITIZE_NAMED_PROPS_PREFIX) !== 0) { + // Remove the attribute with this value + _removeAttribute(name, currentNode); + // Prefix the value and later re-create the attribute with the sanitized value + value = SANITIZE_NAMED_PROPS_PREFIX + value; + } + // Else: already prefixed, leave the attribute alone — the prefix is + // itself the clobbering protection, and re-applying it is incorrect. + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|script|title|xmp|textarea|noscript|iframe|noembed|noframes)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Make sure we cannot easily use animated hrefs, even if animations are allowed */ + if (lcName === 'attributename' && stringMatch(value, 'href')) { + _removeAttribute(name, currentNode); + continue; + } + /* Did the hooks approve of the attribute? */ + if (hookEvent.forceKeepAttr) { + continue; + } + /* Did the hooks approve of the attribute? */ + if (!hookEvent.keepAttr) { + _removeAttribute(name, currentNode); + continue; + } + /* Work around a security issue in jQuery 3.0 */ + if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Sanitize attribute content to be template-safe */ + if (SAFE_FOR_TEMPLATES) { + arrayForEach([MUSTACHE_EXPR$1, ERB_EXPR$1, TMPLIT_EXPR$1], expr => { + value = stringReplace(value, expr, ' '); + }); + } + /* Is `value` valid for this attribute? */ + const lcTag = transformCaseFunc(currentNode.nodeName); + if (!_isValidAttribute(lcTag, lcName, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Handle attributes that require Trusted Types */ + if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { + if (namespaceURI) ; else { + switch (trustedTypes.getAttributeType(lcTag, lcName)) { + case 'TrustedHTML': + { + value = trustedTypesPolicy.createHTML(value); + break; + } + case 'TrustedScriptURL': + { + value = trustedTypesPolicy.createScriptURL(value); + break; + } + } + } + } + /* Handle invalid data-* attribute set by try-catching it */ + if (value !== initValue) { + try { + if (namespaceURI) { + currentNode.setAttributeNS(namespaceURI, name, value); + } else { + /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */ + currentNode.setAttribute(name, value); + } + if (_isClobbered(currentNode)) { + _forceRemove(currentNode); + } else { + arrayPop(DOMPurify.removed); + } + } catch (_) { + _removeAttribute(name, currentNode); + } + } + } + /* Execute a hook if present */ + _executeHooks(hooks.afterSanitizeAttributes, currentNode, null); + }; + /** + * _sanitizeShadowDOM + * + * @param fragment to iterate over recursively + */ + const _sanitizeShadowDOM2 = function _sanitizeShadowDOM(fragment) { + let shadowNode = null; + const shadowIterator = _createNodeIterator(fragment); + /* Execute a hook if present */ + _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null); + while (shadowNode = shadowIterator.nextNode()) { + /* Execute a hook if present */ + _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null); + /* Sanitize tags and elements */ + _sanitizeElements(shadowNode); + /* Check attributes next */ + _sanitizeAttributes(shadowNode); + /* Deep shadow DOM detected. + Realm-safe check (GHSA-hpcv-96wg-7vj8): use nodeType against the + DOCUMENT_FRAGMENT_NODE constant rather than instanceof, so we + recurse into