/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { RuntimeError } from '../errors';
import { getDocument } from '../render3/interfaces/document';
import { SANITIZER } from '../render3/interfaces/view';
import { getLView } from '../render3/state';
import { renderStringify } from '../render3/util/stringify_utils';
import { trustedHTMLFromString, trustedScriptURLFromString } from '../util/security/trusted_types';
import { trustedHTMLFromStringBypass, trustedScriptFromStringBypass, trustedScriptURLFromStringBypass } from '../util/security/trusted_types_bypass';
import { allowSanitizationBypassAndThrow, unwrapSafeValue } from './bypass';
import { _sanitizeHtml as _sanitizeHtml } from './html_sanitizer';
import { SecurityContext } from './security';
import { _sanitizeUrl as _sanitizeUrl } from './url_sanitizer';
/**
 * An `html` sanitizer which converts untrusted `html` **string** into trusted string by removing
 * dangerous content.
 *
 * This method parses the `html` and locates potentially dangerous content (such as urls and
 * javascript) and removes it.
 *
 * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustHtml}.
 *
 * @param unsafeHtml untrusted `html`, typically from the user.
 * @returns `html` string which is safe to display to user, because all of the dangerous javascript
 * and urls have been removed.
 *
 * @codeGenApi
 */
export function ɵɵsanitizeHtml(unsafeHtml) {
    const sanitizer = getSanitizer();
    if (sanitizer) {
        return trustedHTMLFromStringBypass(sanitizer.sanitize(SecurityContext.HTML, unsafeHtml) || '');
    }
    if (allowSanitizationBypassAndThrow(unsafeHtml, "HTML" /* BypassType.Html */)) {
        return trustedHTMLFromStringBypass(unwrapSafeValue(unsafeHtml));
    }
    return _sanitizeHtml(getDocument(), renderStringify(unsafeHtml));
}
/**
 * A `style` sanitizer which converts untrusted `style` **string** into trusted string by removing
 * dangerous content.
 *
 * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustStyle}.
 *
 * @param unsafeStyle untrusted `style`, typically from the user.
 * @returns `style` string which is safe to bind to the `style` properties.
 *
 * @codeGenApi
 */
export function ɵɵsanitizeStyle(unsafeStyle) {
    const sanitizer = getSanitizer();
    if (sanitizer) {
        return sanitizer.sanitize(SecurityContext.STYLE, unsafeStyle) || '';
    }
    if (allowSanitizationBypassAndThrow(unsafeStyle, "Style" /* BypassType.Style */)) {
        return unwrapSafeValue(unsafeStyle);
    }
    return renderStringify(unsafeStyle);
}
/**
 * A `url` sanitizer which converts untrusted `url` **string** into trusted string by removing
 * dangerous
 * content.
 *
 * This method parses the `url` and locates potentially dangerous content (such as javascript) and
 * removes it.
 *
 * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustUrl}.
 *
 * @param unsafeUrl untrusted `url`, typically from the user.
 * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because
 * all of the dangerous javascript has been removed.
 *
 * @codeGenApi
 */
export function ɵɵsanitizeUrl(unsafeUrl) {
    const sanitizer = getSanitizer();
    if (sanitizer) {
        return sanitizer.sanitize(SecurityContext.URL, unsafeUrl) || '';
    }
    if (allowSanitizationBypassAndThrow(unsafeUrl, "URL" /* BypassType.Url */)) {
        return unwrapSafeValue(unsafeUrl);
    }
    return _sanitizeUrl(renderStringify(unsafeUrl));
}
/**
 * A `url` sanitizer which only lets trusted `url`s through.
 *
 * This passes only `url`s marked trusted by calling {@link bypassSanitizationTrustResourceUrl}.
 *
 * @param unsafeResourceUrl untrusted `url`, typically from the user.
 * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because
 * only trusted `url`s have been allowed to pass.
 *
 * @codeGenApi
 */
export function ɵɵsanitizeResourceUrl(unsafeResourceUrl) {
    const sanitizer = getSanitizer();
    if (sanitizer) {
        return trustedScriptURLFromStringBypass(sanitizer.sanitize(SecurityContext.RESOURCE_URL, unsafeResourceUrl) || '');
    }
    if (allowSanitizationBypassAndThrow(unsafeResourceUrl, "ResourceURL" /* BypassType.ResourceUrl */)) {
        return trustedScriptURLFromStringBypass(unwrapSafeValue(unsafeResourceUrl));
    }
    throw new RuntimeError(904 /* RuntimeErrorCode.UNSAFE_VALUE_IN_RESOURCE_URL */, ngDevMode &&
        'unsafe value used in a resource URL context (see https://g.co/ng/security#xss)');
}
/**
 * A `script` sanitizer which only lets trusted javascript through.
 *
 * This passes only `script`s marked trusted by calling {@link
 * bypassSanitizationTrustScript}.
 *
 * @param unsafeScript untrusted `script`, typically from the user.
 * @returns `url` string which is safe to bind to the `<script>` element such as `<img src>`,
 * because only trusted `scripts` have been allowed to pass.
 *
 * @codeGenApi
 */
export function ɵɵsanitizeScript(unsafeScript) {
    const sanitizer = getSanitizer();
    if (sanitizer) {
        return trustedScriptFromStringBypass(sanitizer.sanitize(SecurityContext.SCRIPT, unsafeScript) || '');
    }
    if (allowSanitizationBypassAndThrow(unsafeScript, "Script" /* BypassType.Script */)) {
        return trustedScriptFromStringBypass(unwrapSafeValue(unsafeScript));
    }
    throw new RuntimeError(905 /* RuntimeErrorCode.UNSAFE_VALUE_IN_SCRIPT */, ngDevMode && 'unsafe value used in a script context');
}
/**
 * A template tag function for promoting the associated constant literal to a
 * TrustedHTML. Interpolation is explicitly not allowed.
 *
 * @param html constant template literal containing trusted HTML.
 * @returns TrustedHTML wrapping `html`.
 *
 * @security This is a security-sensitive function and should only be used to
 * convert constant values of attributes and properties found in
 * application-provided Angular templates to TrustedHTML.
 *
 * @codeGenApi
 */
export function ɵɵtrustConstantHtml(html) {
    // The following runtime check ensures that the function was called as a
    // template tag (e.g. ɵɵtrustConstantHtml`content`), without any interpolation
    // (e.g. not ɵɵtrustConstantHtml`content ${variable}`). A TemplateStringsArray
    // is an array with a `raw` property that is also an array. The associated
    // template literal has no interpolation if and only if the length of the
    // TemplateStringsArray is 1.
    if (ngDevMode && (!Array.isArray(html) || !Array.isArray(html.raw) || html.length !== 1)) {
        throw new Error(`Unexpected interpolation in trusted HTML constant: ${html.join('?')}`);
    }
    return trustedHTMLFromString(html[0]);
}
/**
 * A template tag function for promoting the associated constant literal to a
 * TrustedScriptURL. Interpolation is explicitly not allowed.
 *
 * @param url constant template literal containing a trusted script URL.
 * @returns TrustedScriptURL wrapping `url`.
 *
 * @security This is a security-sensitive function and should only be used to
 * convert constant values of attributes and properties found in
 * application-provided Angular templates to TrustedScriptURL.
 *
 * @codeGenApi
 */
export function ɵɵtrustConstantResourceUrl(url) {
    // The following runtime check ensures that the function was called as a
    // template tag (e.g. ɵɵtrustConstantResourceUrl`content`), without any
    // interpolation (e.g. not ɵɵtrustConstantResourceUrl`content ${variable}`). A
    // TemplateStringsArray is an array with a `raw` property that is also an
    // array. The associated template literal has no interpolation if and only if
    // the length of the TemplateStringsArray is 1.
    if (ngDevMode && (!Array.isArray(url) || !Array.isArray(url.raw) || url.length !== 1)) {
        throw new Error(`Unexpected interpolation in trusted URL constant: ${url.join('?')}`);
    }
    return trustedScriptURLFromString(url[0]);
}
/**
 * Detects which sanitizer to use for URL property, based on tag name and prop name.
 *
 * The rules are based on the RESOURCE_URL context config from
 * `packages/compiler/src/schema/dom_security_schema.ts`.
 * If tag and prop names don't match Resource URL schema, use URL sanitizer.
 */
export function getUrlSanitizer(tag, prop) {
    if ((prop === 'src' &&
        (tag === 'embed' || tag === 'frame' || tag === 'iframe' || tag === 'media' ||
            tag === 'script')) ||
        (prop === 'href' && (tag === 'base' || tag === 'link'))) {
        return ɵɵsanitizeResourceUrl;
    }
    return ɵɵsanitizeUrl;
}
/**
 * Sanitizes URL, selecting sanitizer function based on tag and property names.
 *
 * This function is used in case we can't define security context at compile time, when only prop
 * name is available. This happens when we generate host bindings for Directives/Components. The
 * host element is unknown at compile time, so we defer calculation of specific sanitizer to
 * runtime.
 *
 * @param unsafeUrl untrusted `url`, typically from the user.
 * @param tag target element tag name.
 * @param prop name of the property that contains the value.
 * @returns `url` string which is safe to bind.
 *
 * @codeGenApi
 */
export function ɵɵsanitizeUrlOrResourceUrl(unsafeUrl, tag, prop) {
    return getUrlSanitizer(tag, prop)(unsafeUrl);
}
export function validateAgainstEventProperties(name) {
    if (name.toLowerCase().startsWith('on')) {
        const errorMessage = `Binding to event property '${name}' is disallowed for security reasons, ` +
            `please use (${name.slice(2)})=...` +
            `\nIf '${name}' is a directive input, make sure the directive is imported by the` +
            ` current module.`;
        throw new RuntimeError(306 /* RuntimeErrorCode.INVALID_EVENT_BINDING */, errorMessage);
    }
}
export function validateAgainstEventAttributes(name) {
    if (name.toLowerCase().startsWith('on')) {
        const errorMessage = `Binding to event attribute '${name}' is disallowed for security reasons, ` +
            `please use (${name.slice(2)})=...`;
        throw new RuntimeError(306 /* RuntimeErrorCode.INVALID_EVENT_BINDING */, errorMessage);
    }
}
function getSanitizer() {
    const lView = getLView();
    return lView && lView[SANITIZER];
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {RuntimeError, RuntimeErrorCode} from '../errors';\nimport {getDocument} from '../render3/interfaces/document';\nimport {SANITIZER} from '../render3/interfaces/view';\nimport {getLView} from '../render3/state';\nimport {renderStringify} from '../render3/util/stringify_utils';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL} from '../util/security/trusted_type_defs';\nimport {trustedHTMLFromString, trustedScriptURLFromString} from '../util/security/trusted_types';\nimport {trustedHTMLFromStringBypass, trustedScriptFromStringBypass, trustedScriptURLFromStringBypass} from '../util/security/trusted_types_bypass';\n\nimport {allowSanitizationBypassAndThrow, BypassType, unwrapSafeValue} from './bypass';\nimport {_sanitizeHtml as _sanitizeHtml} from './html_sanitizer';\nimport {Sanitizer} from './sanitizer';\nimport {SecurityContext} from './security';\nimport {_sanitizeUrl as _sanitizeUrl} from './url_sanitizer';\n\n\n\n/**\n * An `html` sanitizer which converts untrusted `html` **string** into trusted string by removing\n * dangerous content.\n *\n * This method parses the `html` and locates potentially dangerous content (such as urls and\n * javascript) and removes it.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustHtml}.\n *\n * @param unsafeHtml untrusted `html`, typically from the user.\n * @returns `html` string which is safe to display to user, because all of the dangerous javascript\n * and urls have been removed.\n *\n * @codeGenApi\n */\nexport function ɵɵsanitizeHtml(unsafeHtml: any): TrustedHTML|string {\n  const sanitizer = getSanitizer();\n  if (sanitizer) {\n    return trustedHTMLFromStringBypass(sanitizer.sanitize(SecurityContext.HTML, unsafeHtml) || '');\n  }\n  if (allowSanitizationBypassAndThrow(unsafeHtml, BypassType.Html)) {\n    return trustedHTMLFromStringBypass(unwrapSafeValue(unsafeHtml));\n  }\n  return _sanitizeHtml(getDocument(), renderStringify(unsafeHtml));\n}\n\n/**\n * A `style` sanitizer which converts untrusted `style` **string** into trusted string by removing\n * dangerous content.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustStyle}.\n *\n * @param unsafeStyle untrusted `style`, typically from the user.\n * @returns `style` string which is safe to bind to the `style` properties.\n *\n * @codeGenApi\n */\nexport function ɵɵsanitizeStyle(unsafeStyle: any): string {\n  const sanitizer = getSanitizer();\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.STYLE, unsafeStyle) || '';\n  }\n  if (allowSanitizationBypassAndThrow(unsafeStyle, BypassType.Style)) {\n    return unwrapSafeValue(unsafeStyle);\n  }\n  return renderStringify(unsafeStyle);\n}\n\n/**\n * A `url` sanitizer which converts untrusted `url` **string** into trusted string by removing\n * dangerous\n * content.\n *\n * This method parses the `url` and locates potentially dangerous content (such as javascript) and\n * removes it.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustUrl}.\n *\n * @param unsafeUrl untrusted `url`, typically from the user.\n * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because\n * all of the dangerous javascript has been removed.\n *\n * @codeGenApi\n */\nexport function ɵɵsanitizeUrl(unsafeUrl: any): string {\n  const sanitizer = getSanitizer();\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.URL, unsafeUrl) || '';\n  }\n  if (allowSanitizationBypassAndThrow(unsafeUrl, BypassType.Url)) {\n    return unwrapSafeValue(unsafeUrl);\n  }\n  return _sanitizeUrl(renderStringify(unsafeUrl));\n}\n\n/**\n * A `url` sanitizer which only lets trusted `url`s through.\n *\n * This passes only `url`s marked trusted by calling {@link bypassSanitizationTrustResourceUrl}.\n *\n * @param unsafeResourceUrl untrusted `url`, typically from the user.\n * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because\n * only trusted `url`s have been allowed to pass.\n *\n * @codeGenApi\n */\nexport function ɵɵsanitizeResourceUrl(unsafeResourceUrl: any): TrustedScriptURL|string {\n  const sanitizer = getSanitizer();\n  if (sanitizer) {\n    return trustedScriptURLFromStringBypass(\n        sanitizer.sanitize(SecurityContext.RESOURCE_URL, unsafeResourceUrl) || '');\n  }\n  if (allowSanitizationBypassAndThrow(unsafeResourceUrl, BypassType.ResourceUrl)) {\n    return trustedScriptURLFromStringBypass(unwrapSafeValue(unsafeResourceUrl));\n  }\n  throw new RuntimeError(\n      RuntimeErrorCode.UNSAFE_VALUE_IN_RESOURCE_URL,\n      ngDevMode &&\n          'unsafe value used in a resource URL context (see https://g.co/ng/security#xss)');\n}\n\n/**\n * A `script` sanitizer which only lets trusted javascript through.\n *\n * This passes only `script`s marked trusted by calling {@link\n * bypassSanitizationTrustScript}.\n *\n * @param unsafeScript untrusted `script`, typically from the user.\n * @returns `url` string which is safe to bind to the `<script>` element such as `<img src>`,\n * because only trusted `scripts` have been allowed to pass.\n *\n * @codeGenApi\n */\nexport function ɵɵsanitizeScript(unsafeScript: any): TrustedScript|string {\n  const sanitizer = getSanitizer();\n  if (sanitizer) {\n    return trustedScriptFromStringBypass(\n        sanitizer.sanitize(SecurityContext.SCRIPT, unsafeScript) || '');\n  }\n  if (allowSanitizationBypassAndThrow(unsafeScript, BypassType.Script)) {\n    return trustedScriptFromStringBypass(unwrapSafeValue(unsafeScript));\n  }\n  throw new RuntimeError(\n      RuntimeErrorCode.UNSAFE_VALUE_IN_SCRIPT,\n      ngDevMode && 'unsafe value used in a script context');\n}\n\n/**\n * A template tag function for promoting the associated constant literal to a\n * TrustedHTML. Interpolation is explicitly not allowed.\n *\n * @param html constant template literal containing trusted HTML.\n * @returns TrustedHTML wrapping `html`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedHTML.\n *\n * @codeGenApi\n */\nexport function ɵɵtrustConstantHtml(html: TemplateStringsArray): TrustedHTML|string {\n  // The following runtime check ensures that the function was called as a\n  // template tag (e.g. ɵɵtrustConstantHtml`content`), without any interpolation\n  // (e.g. not ɵɵtrustConstantHtml`content ${variable}`). A TemplateStringsArray\n  // is an array with a `raw` property that is also an array. The associated\n  // template literal has no interpolation if and only if the length of the\n  // TemplateStringsArray is 1.\n  if (ngDevMode && (!Array.isArray(html) || !Array.isArray(html.raw) || html.length !== 1)) {\n    throw new Error(`Unexpected interpolation in trusted HTML constant: ${html.join('?')}`);\n  }\n  return trustedHTMLFromString(html[0]);\n}\n\n/**\n * A template tag function for promoting the associated constant literal to a\n * TrustedScriptURL. Interpolation is explicitly not allowed.\n *\n * @param url constant template literal containing a trusted script URL.\n * @returns TrustedScriptURL wrapping `url`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedScriptURL.\n *\n * @codeGenApi\n */\nexport function ɵɵtrustConstantResourceUrl(url: TemplateStringsArray): TrustedScriptURL|string {\n  // The following runtime check ensures that the function was called as a\n  // template tag (e.g. ɵɵtrustConstantResourceUrl`content`), without any\n  // interpolation (e.g. not ɵɵtrustConstantResourceUrl`content ${variable}`). A\n  // TemplateStringsArray is an array with a `raw` property that is also an\n  // array. The associated template literal has no interpolation if and only if\n  // the length of the TemplateStringsArray is 1.\n  if (ngDevMode && (!Array.isArray(url) || !Array.isArray(url.raw) || url.length !== 1)) {\n    throw new Error(`Unexpected interpolation in trusted URL constant: ${url.join('?')}`);\n  }\n  return trustedScriptURLFromString(url[0]);\n}\n\n/**\n * Detects which sanitizer to use for URL property, based on tag name and prop name.\n *\n * The rules are based on the RESOURCE_URL context config from\n * `packages/compiler/src/schema/dom_security_schema.ts`.\n * If tag and prop names don't match Resource URL schema, use URL sanitizer.\n */\nexport function getUrlSanitizer(tag: string, prop: string) {\n  if ((prop === 'src' &&\n       (tag === 'embed' || tag === 'frame' || tag === 'iframe' || tag === 'media' ||\n        tag === 'script')) ||\n      (prop === 'href' && (tag === 'base' || tag === 'link'))) {\n    return ɵɵsanitizeResourceUrl;\n  }\n  return ɵɵsanitizeUrl;\n}\n\n/**\n * Sanitizes URL, selecting sanitizer function based on tag and property names.\n *\n * This function is used in case we can't define security context at compile time, when only prop\n * name is available. This happens when we generate host bindings for Directives/Components. The\n * host element is unknown at compile time, so we defer calculation of specific sanitizer to\n * runtime.\n *\n * @param unsafeUrl untrusted `url`, typically from the user.\n * @param tag target element tag name.\n * @param prop name of the property that contains the value.\n * @returns `url` string which is safe to bind.\n *\n * @codeGenApi\n */\nexport function ɵɵsanitizeUrlOrResourceUrl(unsafeUrl: any, tag: string, prop: string): any {\n  return getUrlSanitizer(tag, prop)(unsafeUrl);\n}\n\nexport function validateAgainstEventProperties(name: string) {\n  if (name.toLowerCase().startsWith('on')) {\n    const errorMessage =\n        `Binding to event property '${name}' is disallowed for security reasons, ` +\n        `please use (${name.slice(2)})=...` +\n        `\\nIf '${name}' is a directive input, make sure the directive is imported by the` +\n        ` current module.`;\n    throw new RuntimeError(RuntimeErrorCode.INVALID_EVENT_BINDING, errorMessage);\n  }\n}\n\nexport function validateAgainstEventAttributes(name: string) {\n  if (name.toLowerCase().startsWith('on')) {\n    const errorMessage =\n        `Binding to event attribute '${name}' is disallowed for security reasons, ` +\n        `please use (${name.slice(2)})=...`;\n    throw new RuntimeError(RuntimeErrorCode.INVALID_EVENT_BINDING, errorMessage);\n  }\n}\n\nfunction getSanitizer(): Sanitizer|null {\n  const lView = getLView();\n  return lView && lView[SANITIZER];\n}\n"]}