| 1 |
<template> |
| 2 |
<div ref="containerRef" class="ivyforms-safe-html"></div> |
| 3 |
</template> |
| 4 |
|
| 5 |
<script setup lang="ts"> |
| 6 |
import { ref, onMounted, watch, nextTick } from 'vue' |
| 7 |
import DOMPurify from 'dompurify' |
| 8 |
|
| 9 |
interface Props { |
| 10 |
html: string |
| 11 |
fieldType?: string |
| 12 |
allowedTags?: string[] |
| 13 |
allowedAttributes?: Record<string, string[]> |
| 14 |
} |
| 15 |
|
| 16 |
const props = withDefaults(defineProps<Props>(), { |
| 17 |
fieldType: 'unknown', |
| 18 |
allowedTags: undefined, |
| 19 |
allowedAttributes: undefined, |
| 20 |
}) |
| 21 |
|
| 22 |
const containerRef = ref<HTMLDivElement>() |
| 23 |
|
| 24 |
/** |
| 25 |
* Get DOMPurify configuration based on field type |
| 26 |
*/ |
| 27 |
const getDOMPurifyConfig = (): DOMPurify.Config => { |
| 28 |
const baseConfig: DOMPurify.Config = { |
| 29 |
RETURN_DOM_FRAGMENT: false, |
| 30 |
RETURN_DOM: false, |
| 31 |
ALLOWED_URI_REGEXP: |
| 32 |
/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|data):|[^a-z]|[a-z+.-]+(?:[^a-z+.-:]|$))/i, |
| 33 |
} |
| 34 |
|
| 35 |
// Field-specific configurations |
| 36 |
switch (props.fieldType) { |
| 37 |
case 'signature': |
| 38 |
return { |
| 39 |
...baseConfig, |
| 40 |
ALLOWED_TAGS: ['img'], |
| 41 |
ALLOWED_ATTR: ['src', 'alt', 'style', 'class', 'width', 'height'], |
| 42 |
ALLOWED_URI_REGEXP: /^data:image\/(png|jpeg|jpg|gif|svg\+xml);base64,/i, |
| 43 |
} |
| 44 |
|
| 45 |
case 'rich-text': |
| 46 |
return { |
| 47 |
...baseConfig, |
| 48 |
ALLOWED_TAGS: [ |
| 49 |
'p', |
| 50 |
'br', |
| 51 |
'strong', |
| 52 |
'b', |
| 53 |
'em', |
| 54 |
'i', |
| 55 |
'u', |
| 56 |
'a', |
| 57 |
'ul', |
| 58 |
'ol', |
| 59 |
'li', |
| 60 |
'h1', |
| 61 |
'h2', |
| 62 |
'h3', |
| 63 |
'h4', |
| 64 |
'h5', |
| 65 |
'h6', |
| 66 |
'blockquote', |
| 67 |
'code', |
| 68 |
'pre', |
| 69 |
'span', |
| 70 |
'div', |
| 71 |
], |
| 72 |
ALLOWED_ATTR: ['href', 'target', 'rel', 'class', 'style'], |
| 73 |
} |
| 74 |
|
| 75 |
case 'chart': |
| 76 |
case 'visualization': |
| 77 |
return { |
| 78 |
...baseConfig, |
| 79 |
ALLOWED_TAGS: ['div', 'svg', 'canvas', 'img'], |
| 80 |
ALLOWED_ATTR: ['class', 'style', 'width', 'height', 'viewBox', 'src', 'alt', 'data-*'], |
| 81 |
} |
| 82 |
|
| 83 |
default: |
| 84 |
// Custom configuration if provided |
| 85 |
if (props.allowedTags || props.allowedAttributes) { |
| 86 |
return { |
| 87 |
...baseConfig, |
| 88 |
ALLOWED_TAGS: props.allowedTags, |
| 89 |
ALLOWED_ATTR: props.allowedAttributes |
| 90 |
? Object.values(props.allowedAttributes).flat() |
| 91 |
: undefined, |
| 92 |
} |
| 93 |
} |
| 94 |
|
| 95 |
// Fallback: very restrictive |
| 96 |
return { |
| 97 |
...baseConfig, |
| 98 |
ALLOWED_TAGS: ['span', 'div'], |
| 99 |
ALLOWED_ATTR: ['class'], |
| 100 |
} |
| 101 |
} |
| 102 |
} |
| 103 |
|
| 104 |
/** |
| 105 |
* Sanitize HTML using DOMPurify with field-specific configuration |
| 106 |
*/ |
| 107 |
const sanitizeHTML = (html: string): string => { |
| 108 |
if (!html || typeof html !== 'string') { |
| 109 |
return '' |
| 110 |
} |
| 111 |
|
| 112 |
const config = getDOMPurifyConfig() |
| 113 |
|
| 114 |
try { |
| 115 |
// Sanitize the HTML |
| 116 |
const clean = DOMPurify.sanitize(html, config) |
| 117 |
|
| 118 |
return clean |
| 119 |
} catch (error) { |
| 120 |
console.error('SafeHTML: Error sanitizing HTML:', error) |
| 121 |
return '' |
| 122 |
} |
| 123 |
} |
| 124 |
|
| 125 |
/** |
| 126 |
* Render sanitized HTML into the container |
| 127 |
*/ |
| 128 |
const renderHTML = () => { |
| 129 |
if (!containerRef.value) return |
| 130 |
|
| 131 |
const sanitized = sanitizeHTML(props.html) |
| 132 |
|
| 133 |
// Set the sanitized HTML |
| 134 |
containerRef.value.innerHTML = sanitized |
| 135 |
} |
| 136 |
|
| 137 |
// Render on mount and when HTML changes |
| 138 |
onMounted(() => { |
| 139 |
nextTick(() => { |
| 140 |
renderHTML() |
| 141 |
}) |
| 142 |
}) |
| 143 |
|
| 144 |
watch( |
| 145 |
() => props.html, |
| 146 |
() => { |
| 147 |
nextTick(() => { |
| 148 |
renderHTML() |
| 149 |
}) |
| 150 |
}, |
| 151 |
) |
| 152 |
</script> |
| 153 |
|
| 154 |
<style scoped lang="scss"> |
| 155 |
.ivyforms-safe-html { |
| 156 |
// Base styles for sanitized HTML content |
| 157 |
|
| 158 |
:deep(img) { |
| 159 |
max-width: 100%; |
| 160 |
height: auto; |
| 161 |
display: block; |
| 162 |
} |
| 163 |
|
| 164 |
:deep(a) { |
| 165 |
color: var(--map-base-brand-symbol-0); |
| 166 |
text-decoration: none; |
| 167 |
|
| 168 |
&:hover { |
| 169 |
text-decoration: underline; |
| 170 |
} |
| 171 |
} |
| 172 |
|
| 173 |
:deep(code) { |
| 174 |
background-color: var(--map-base-dusk-o05); |
| 175 |
padding: 2px 6px; |
| 176 |
border-radius: 4px; |
| 177 |
font-family: monospace; |
| 178 |
font-size: 0.9em; |
| 179 |
} |
| 180 |
|
| 181 |
:deep(pre) { |
| 182 |
background-color: var(--map-base-dusk-o05); |
| 183 |
padding: 12px; |
| 184 |
border-radius: 8px; |
| 185 |
overflow-x: auto; |
| 186 |
|
| 187 |
code { |
| 188 |
background: none; |
| 189 |
padding: 0; |
| 190 |
} |
| 191 |
} |
| 192 |
|
| 193 |
:deep(blockquote) { |
| 194 |
border-left: 4px solid var(--map-base-dusk-stroke-0); |
| 195 |
padding-left: 12px; |
| 196 |
margin: 8px 0; |
| 197 |
color: var(--map-base-text-1); |
| 198 |
} |
| 199 |
} |
| 200 |
</style> |
| 201 |
|
