tmpl.go: Separate the template into its own file

author: Runxi Yu <me@runxiyu.org> 2025-03-24 19:43:35 +0800
committer: Runxi Yu <me@runxiyu.org> 2025-03-24 19:46:00 +0800
commit: 06fc76b4f0afdf46b879eae1ae86d438070d3eaa (patch)
tree: e12d2ca6fb72d63131bef49618701a25345c83a9
parent: main.go: Set HttpOnly on cookie (diff)
download: powxy-06fc76b4f0afdf46b879eae1ae86d438070d3eaa.tar.gz
powxy-06fc76b4f0afdf46b879eae1ae86d438070d3eaa.tar.zst
powxy-06fc76b4f0afdf46b879eae1ae86d438070d3eaa.zip
2 files changed, 290 insertions, 287 deletions
diff --git a/challenge.tmpl b/challenge.tmpl
new file mode 100644
index 0000000..13eac3d
--- /dev/null
+++ b/challenge.tmpl
@@ -0,0 +1,286 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="utf-8" />
+	<meta name="viewport" content="width=device-width, initial-scale=1" />
+	<title>Proof-of-work challenge</title>
+	<style>
+		html {
+			font-family: sans-serif;
+			background-color: var(--background-color);
+			color: var(--text-color);
+			--radius-1: 0.32rem;
+			--background-color: hsl(0, 0%, 100%);
+			--text-color: hsl(0, 0%, 0%);
+			--link-color: hsl(320, 50%, 36%);
+			--light-text-color: hsl(0, 0%, 45%);
+			--darker-border-color: hsl(0, 0%, 72%);
+			--lighter-border-color: hsl(0, 0%, 85%);
+			--text-decoration-color: hsl(0, 0%, 72%);
+			--darker-box-background-color: hsl(0, 0%, 92%);
+			--lighter-box-background-color: hsl(0, 0%, 95%);
+			--primary-color: hsl(320, 50%, 36%);
+			--primary-color-contrast: hsl(320, 0%, 100%);
+			--danger-color: #ff0000;
+			--danger-color-contrast: #ffffff;
+		}
+
+		@media (prefers-color-scheme: dark) {
+			html {
+				--background-color: hsl(0, 0%, 0%);
+				--text-color: hsl(0, 0%, 100%);
+				--link-color: hsl(320, 50%, 76%);
+				--light-text-color: hsl(0, 0%, 78%);
+				--darker-border-color: hsl(0, 0%, 35%);
+				--lighter-border-color: hsl(0, 0%, 25%);
+				--text-decoration-color: hsl(0, 0%, 30%);
+				--darker-box-background-color: hsl(0, 0%, 20%);
+				--lighter-box-background-color: hsl(0, 0%, 15%);
+			}
+		}
+
+		body {
+			margin: 0;
+			padding: 1rem;
+		}
+
+		main {
+			max-width: 720px;
+			margin: 0 auto;
+		}
+
+		*:focus-visible {
+			outline: 1.5px var(--primary-color) solid;
+		}
+
+		section {
+			margin: 0;
+		}
+
+		label {
+			display: block;
+			font-style: italic;
+			margin-top: 1rem;
+			margin-bottom: 0.5rem;
+		}
+
+		h1 {
+			margin-top: 0;
+		}
+
+		p, summary {
+			line-height: 1.2;
+			font-size: 1rem;
+		}
+
+		a {
+			color: var(--link-color);
+			text-decoration-color: var(--text-decoration-color);
+		}
+
+		input[type="text"] {
+			font-family: monospace;
+			font-size: 1rem;
+			background-color: var(--lighter-box-background-color);
+			color: var(--text-color);
+			width: 100%;
+			padding: 0.5rem;
+			border-radius: var(--radius-1);
+			border: none;
+			box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.15);
+			margin-bottom: 1rem;
+			box-sizing: border-box;
+		}
+
+		input[type="submit"] {
+			padding: 0.5rem 1rem;
+			background-color: var(--primary-color);
+			color: var(--primary-color-contrast);
+			border: none;
+			border-radius: var(--radius-1);
+			cursor: pointer;
+		}
+
+		input[readonly] {
+			background-color: var(--lighter-box-background-color);
+			color: var(--text-color);
+			cursor: text;
+		}
+
+		details {
+			margin-top: 2rem;
+			background-color: var(--lighter-box-background-color);
+			padding: 0.5rem;
+			border-radius: var(--radius-1);
+			box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.15);
+		}
+
+		pre {
+			overflow-x: auto;
+			display: block;
+			white-space: pre-wrap;
+			word-break: break-word;
+		}
+
+		#solver_status {
+			color: var(--light-text-color);
+			margin-top: 1rem;
+		}
+	</style>
+	<script>
+		/*    
+		@licstart  The following is the entire license notice for the 
+		JavaScript code in this page.
+		
+		Copyright (C) 2025  Runxi Yu
+		
+		Redistribution and use in source and binary forms, with or without
+		modification, are permitted provided that the following conditions are
+		met:
+		
+		    1. Redistributions of source code must retain the above copyright
+		    notice, this list of conditions and the following disclaimer.
+		
+		    2. Redistributions in binary form must reproduce the above copyright
+		    notice, this list of conditions and the following disclaimer in the
+		    documentation and/or other materials provided with the distribution.
+		
+		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY
+		EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+		IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+		PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+		CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+		EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+		PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+		PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+		LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+		NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+		SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+		@licend  The above is the entire license notice
+		for the JavaScript code in this page.
+		*/
+	</script>
+</head>
+<body>
+	<main>
+		<header>
+			<h1>Proof-of-work challenge</h1>
+		</header>
+
+		<section>
+			<p>This site is protected by <a href="{{ .Global.SourceURL }}">Powxy</a>{{ if .Global.Version }} {{ .Global.Version }}{{ end }}.</p>
+			<p>You must complete this proof-of-work challenge before you can access this site.</p>
+		</section>
+
+		<section>
+			<p>Select a nonce no longer than 32 bytes, such that when it is appended to the decoded form of the challenge identifier, and the entire result is hashed with SHA-256, the first {{ .Global.NeedBits }} bits of the SHA-256 hash are all zeros. Within one octet, higher bits are considered to come before lower bits.</p>
+			<p>In other words, find an nonce <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>N</mi><annotation encoding="application/x-tex">N</annotation></semantics></math> with <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo stretchy="false" form="prefix">|</mo><mi>N</mi><mo stretchy="false" form="postfix">|</mo><mo>≤</mo><mn>32</mn><mspace width="0.167em"></mspace><mi mathvariant="normal">B</mi></mrow><annotation encoding="application/x-tex">\lvert N\rvert \le 32\,\mathrm{B}</annotation></semantics></math>, such that <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mrow><mi mathvariant="normal">S</mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">A</mi><mn mathvariant="normal">256</mn></mrow><mrow><mo stretchy="true" form="prefix">(</mo><mi>I</mi><mspace width="0.167em"></mspace><mo stretchy="false" form="postfix">∥</mo><mspace width="0.167em"></mspace><mi>N</mi><mo stretchy="true" form="postfix">)</mo></mrow><mo>&lt;</mo><msup><mn>2</mn><mn>{{ .Global.NeedBitsReverse }}</mn></msup></mrow><annotation encoding="application/x-tex">\mathrm{SHA256}(I \,\|\, N) &lt; 2^&lcub;{{ .Global.NeedBitsReverse }}&rcub;</annotation></semantics></math> in big endian, where <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>I</mi><annotation encoding="application/x-tex">I</annotation></semantics></math> is the identifier provided below.</p>
+			<label for="unsigned-identifier">Challenge identifier (read-only)</label>
+			<input id="unsigned-identifier" type="text" readonly disabled tabindex="-1" value="{{ .Identifier }}" />
+		</section>
+
+		<section>
+			<form method="POST">
+				<p>Encode your selected nonce in base64 and submit it below.</p>
+				<p>Please note that if your submission is successful, you will be given a cookie that will allow you to access this site for a period of time without having to complete the challenge again. By pressing the submit button, you agree to be given cookies for this purpose.</p>
+				<label for="nonce">Nonce</label>
+				<input id="nonce" name="powxy" type="text" />
+				<input type="submit" value="Submit" />
+			</form>
+		</section>
+
+		{{- if .Message }}
+		<section>
+			<p><strong>{{ .Message }}</strong></p>
+		</section>
+		{{- end }}
+
+		<section>
+			<p id="solver_status">JavaScript seems to be disabled. You must solve the challenge externally.</p>
+		</section>
+
+		<details>
+			<summary>Offline solver program</summary>
+			<pre>` + html.EscapeString(solverProgram) + `</pre>
+		</details>
+	</main>
+
+	<script>
+		document.addEventListener("DOMContentLoaded", function() {
+			let challenge_b64 = "{{ .Identifier }}";
+			let difficulty = {{ .Global.NeedBits }};
+			let form = document.querySelector("form");
+			let field = form.querySelector("input[name='powxy']");
+			let status_el = document.getElementById("solver_status");
+	
+			if (!window.crypto || !window.crypto.subtle) {
+				status_el.textContent = "SubtleCrypto not available. You must solve the challenge externally.";
+				return;
+			}
+			status_el.textContent = "SubtleCrypto detected. Attempting to solve the challenge automatically...";
+	
+			let solver_active = true;
+			form.addEventListener("submit", function() {
+				solver_active = false;
+			});
+	
+			async function solve_pow() {
+				let identifier_bytes = Uint8Array.from(
+					atob(challenge_b64),
+					ch => ch.charCodeAt(0)
+				);
+	
+				let nonce = 0n;
+				let buf = new ArrayBuffer(8);
+				let view = new DataView(buf);
+	
+				while (solver_active) {
+					view.setBigUint64(0, nonce, true);
+	
+					let candidate = new Uint8Array(identifier_bytes.length + 8);
+					candidate.set(identifier_bytes, 0);
+					candidate.set(new Uint8Array(buf), identifier_bytes.length);
+	
+					let digest_buffer = await crypto.subtle.digest("SHA-256", candidate);
+					let digest = new Uint8Array(digest_buffer);
+	
+					if (has_leading_zero_bits(digest, difficulty)) {
+						let nonce_str = String.fromCharCode(...new Uint8Array(buf));
+						field.value = btoa(nonce_str);
+	
+						status_el.textContent = "A solution has been found automatically in " + nonce + " iterations.";
+						return;
+					}
+	
+					nonce++;
+	
+					if ((nonce & 0x00FFn) === 0n) {
+						status_el.textContent = "Attempting to solve automatically. Tried " + nonce + " candidates so far...";
+						await new Promise(r => setTimeout(r, 0));
+					}
+				}
+			}
+	
+			function has_leading_zero_bits(digest, bits) {
+				let full_bytes = bits >>> 3;
+				for (let i = 0; i < full_bytes; i++) {
+					if (digest[i] !== 0) {
+						return false;
+					}
+				}
+				let remainder = bits & 7;
+				if (remainder !== 0) {
+					let mask = 0xFF << (8 - remainder);
+					if ((digest[full_bytes] & mask) !== 0) {
+						return false;
+					}
+				}
+				return true;
+			}
+	
+			solve_pow();
+		});
+	</script>
+</body>
+</html>
diff --git a/tmpl.go b/tmpl.go
index 0936771..27191cd 100644
--- a/tmpl.go
+++ b/tmpl.go
@@ -4,301 +4,18 @@
 package main
 
 import (
-	"html"
+	_ "embed"
 	"log"
 	"text/template"
 )
 
+//go:embed challenge.tmpl
+var tmplString string
 var tmpl *template.Template
 
 func init() {
 	var err error
-	tmpl, err = template.New("powxy").Parse(`<!DOCTYPE html>
-<html lang="en">
-<head>
-	<meta charset="utf-8" />
-	<meta name="viewport" content="width=device-width, initial-scale=1" />
-	<title>Proof-of-work challenge</title>
-	<style>
-		html {
-			font-family: sans-serif;
-			background-color: var(--background-color);
-			color: var(--text-color);
-			--radius-1: 0.32rem;
-			--background-color: hsl(0, 0%, 100%);
-			--text-color: hsl(0, 0%, 0%);
-			--link-color: hsl(320, 50%, 36%);
-			--light-text-color: hsl(0, 0%, 45%);
-			--darker-border-color: hsl(0, 0%, 72%);
-			--lighter-border-color: hsl(0, 0%, 85%);
-			--text-decoration-color: hsl(0, 0%, 72%);
-			--darker-box-background-color: hsl(0, 0%, 92%);
-			--lighter-box-background-color: hsl(0, 0%, 95%);
-			--primary-color: hsl(320, 50%, 36%);
-			--primary-color-contrast: hsl(320, 0%, 100%);
-			--danger-color: #ff0000;
-			--danger-color-contrast: #ffffff;
-		}
-
-		@media (prefers-color-scheme: dark) {
-			html {
-				--background-color: hsl(0, 0%, 0%);
-				--text-color: hsl(0, 0%, 100%);
-				--link-color: hsl(320, 50%, 76%);
-				--light-text-color: hsl(0, 0%, 78%);
-				--darker-border-color: hsl(0, 0%, 35%);
-				--lighter-border-color: hsl(0, 0%, 25%);
-				--text-decoration-color: hsl(0, 0%, 30%);
-				--darker-box-background-color: hsl(0, 0%, 20%);
-				--lighter-box-background-color: hsl(0, 0%, 15%);
-			}
-		}
-
-		body {
-			margin: 0;
-			padding: 1rem;
-		}
-
-		main {
-			max-width: 720px;
-			margin: 0 auto;
-		}
-
-		*:focus-visible {
-			outline: 1.5px var(--primary-color) solid;
-		}
-
-		section {
-			margin: 0;
-		}
-
-		label {
-			display: block;
-			font-style: italic;
-			margin-top: 1rem;
-			margin-bottom: 0.5rem;
-		}
-
-		h1 {
-			margin-top: 0;
-		}
-
-		p, summary {
-			line-height: 1.2;
-			font-size: 1rem;
-		}
-
-		a {
-			color: var(--link-color);
-			text-decoration-color: var(--text-decoration-color);
-		}
-
-		input[type="text"] {
-			font-family: monospace;
-			font-size: 1rem;
-			background-color: var(--lighter-box-background-color);
-			color: var(--text-color);
-			width: 100%;
-			padding: 0.5rem;
-			border-radius: var(--radius-1);
-			border: none;
-			box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.15);
-			margin-bottom: 1rem;
-			box-sizing: border-box;
-		}
-
-		input[type="submit"] {
-			padding: 0.5rem 1rem;
-			background-color: var(--primary-color);
-			color: var(--primary-color-contrast);
-			border: none;
-			border-radius: var(--radius-1);
-			cursor: pointer;
-		}
-
-		input[readonly] {
-			background-color: var(--lighter-box-background-color);
-			color: var(--text-color);
-			cursor: text;
-		}
-
-		details {
-			margin-top: 2rem;
-			background-color: var(--lighter-box-background-color);
-			padding: 0.5rem;
-			border-radius: var(--radius-1);
-			box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.15);
-		}
-
-		pre {
-			overflow-x: auto;
-			display: block;
-			white-space: pre-wrap;
-			word-break: break-word;
-		}
-
-		#solver_status {
-			color: var(--light-text-color);
-			margin-top: 1rem;
-		}
-	</style>
-	<script>
-		/*    
-		@licstart  The following is the entire license notice for the 
-		JavaScript code in this page.
-		
-		Copyright (C) 2025  Runxi Yu
-		
-		Redistribution and use in source and binary forms, with or without
-		modification, are permitted provided that the following conditions are
-		met:
-		
-		    1. Redistributions of source code must retain the above copyright
-		    notice, this list of conditions and the following disclaimer.
-		
-		    2. Redistributions in binary form must reproduce the above copyright
-		    notice, this list of conditions and the following disclaimer in the
-		    documentation and/or other materials provided with the distribution.
-		
-		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY
-		EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-		IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-		PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-		CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-		EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-		PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-		PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-		LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-		NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-		SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-		@licend  The above is the entire license notice
-		for the JavaScript code in this page.
-		*/
-	</script>
-</head>
-<body>
-	<main>
-		<header>
-			<h1>Proof-of-work challenge</h1>
-		</header>
-
-		<section>
-			<p>This site is protected by <a href="{{ .Global.SourceURL }}">Powxy</a>{{ if .Global.Version }} {{ .Global.Version }}{{ end }}.</p>
-			<p>You must complete this proof-of-work challenge before you can access this site.</p>
-		</section>
-
-		<section>
-			<p>Select a nonce no longer than 32 bytes, such that when it is appended to the decoded form of the challenge identifier, and the entire result is hashed with SHA-256, the first {{ .Global.NeedBits }} bits of the SHA-256 hash are all zeros. Within one octet, higher bits are considered to come before lower bits.</p>
-			<p>In other words, find an nonce <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>N</mi><annotation encoding="application/x-tex">N</annotation></semantics></math> with <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo stretchy="false" form="prefix">|</mo><mi>N</mi><mo stretchy="false" form="postfix">|</mo><mo>≤</mo><mn>32</mn><mspace width="0.167em"></mspace><mi mathvariant="normal">B</mi></mrow><annotation encoding="application/x-tex">\lvert N\rvert \le 32\,\mathrm{B}</annotation></semantics></math>, such that <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mrow><mi mathvariant="normal">S</mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">A</mi><mn mathvariant="normal">256</mn></mrow><mrow><mo stretchy="true" form="prefix">(</mo><mi>I</mi><mspace width="0.167em"></mspace><mo stretchy="false" form="postfix">∥</mo><mspace width="0.167em"></mspace><mi>N</mi><mo stretchy="true" form="postfix">)</mo></mrow><mo>&lt;</mo><msup><mn>2</mn><mn>{{ .Global.NeedBitsReverse }}</mn></msup></mrow><annotation encoding="application/x-tex">\mathrm{SHA256}(I \,\|\, N) &lt; 2^&lcub;{{ .Global.NeedBitsReverse }}&rcub;</annotation></semantics></math> in big endian, where <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>I</mi><annotation encoding="application/x-tex">I</annotation></semantics></math> is the identifier provided below.</p>
-			<label for="unsigned-identifier">Challenge identifier (read-only)</label>
-			<input id="unsigned-identifier" type="text" readonly disabled tabindex="-1" value="{{ .Identifier }}" />
-		</section>
-
-		<section>
-			<form method="POST">
-				<p>Encode your selected nonce in base64 and submit it below.</p>
-				<p>Please note that if your submission is successful, you will be given a cookie that will allow you to access this site for a period of time without having to complete the challenge again. By pressing the submit button, you agree to be given cookies for this purpose.</p>
-				<label for="nonce">Nonce</label>
-				<input id="nonce" name="powxy" type="text" />
-				<input type="submit" value="Submit" />
-			</form>
-		</section>
-
-		{{- if .Message }}
-		<section>
-			<p><strong>{{ .Message }}</strong></p>
-		</section>
-		{{- end }}
-
-		<section>
-			<p id="solver_status">JavaScript seems to be disabled. You must solve the challenge externally.</p>
-		</section>
-
-		<details>
-			<summary>Offline solver program</summary>
-			<pre>` + html.EscapeString(solverProgram) + `</pre>
-		</details>
-	</main>
-
-	<script>
-		document.addEventListener("DOMContentLoaded", function() {
-			let challenge_b64 = "{{ .Identifier }}";
-			let difficulty = {{ .Global.NeedBits }};
-			let form = document.querySelector("form");
-			let field = form.querySelector("input[name='powxy']");
-			let status_el = document.getElementById("solver_status");
-	
-			if (!window.crypto || !window.crypto.subtle) {
-				status_el.textContent = "SubtleCrypto not available. You must solve the challenge externally.";
-				return;
-			}
-			status_el.textContent = "SubtleCrypto detected. Attempting to solve the challenge automatically...";
-	
-			let solver_active = true;
-			form.addEventListener("submit", function() {
-				solver_active = false;
-			});
-	
-			async function solve_pow() {
-				let identifier_bytes = Uint8Array.from(
-					atob(challenge_b64),
-					ch => ch.charCodeAt(0)
-				);
-	
-				let nonce = 0n;
-				let buf = new ArrayBuffer(8);
-				let view = new DataView(buf);
-	
-				while (solver_active) {
-					view.setBigUint64(0, nonce, true);
-	
-					let candidate = new Uint8Array(identifier_bytes.length + 8);
-					candidate.set(identifier_bytes, 0);
-					candidate.set(new Uint8Array(buf), identifier_bytes.length);
-	
-					let digest_buffer = await crypto.subtle.digest("SHA-256", candidate);
-					let digest = new Uint8Array(digest_buffer);
-	
-					if (has_leading_zero_bits(digest, difficulty)) {
-						let nonce_str = String.fromCharCode(...new Uint8Array(buf));
-						field.value = btoa(nonce_str);
-	
-						status_el.textContent = "A solution has been found automatically in " + nonce + " iterations.";
-						return;
-					}
-	
-					nonce++;
-	
-					if ((nonce & 0x00FFn) === 0n) {
-						status_el.textContent = "Attempting to solve automatically. Tried " + nonce + " candidates so far...";
-						await new Promise(r => setTimeout(r, 0));
-					}
-				}
-			}
-	
-			function has_leading_zero_bits(digest, bits) {
-				let full_bytes = bits >>> 3;
-				for (let i = 0; i < full_bytes; i++) {
-					if (digest[i] !== 0) {
-						return false;
-					}
-				}
-				let remainder = bits & 7;
-				if (remainder !== 0) {
-					let mask = 0xFF << (8 - remainder);
-					if ((digest[full_bytes] & mask) !== 0) {
-						return false;
-					}
-				}
-				return true;
-			}
-	
-			solve_pow();
-		});
-	</script>
-</body>
-</html>`)
+	tmpl, err = template.New("powxy").Parse(tmplString)
 	if err != nil {
 		log.Fatal(err)
 	}
author	Runxi Yu <me@runxiyu.org>	2025-03-24 19:43:35 +0800
committer	Runxi Yu <me@runxiyu.org>	2025-03-24 19:46:00 +0800
commit	06fc76b4f0afdf46b879eae1ae86d438070d3eaa (patch)
tree	e12d2ca6fb72d63131bef49618701a25345c83a9
parent	main.go: Set HttpOnly on cookie (diff)
download	powxy-06fc76b4f0afdf46b879eae1ae86d438070d3eaa.tar.gz powxy-06fc76b4f0afdf46b879eae1ae86d438070d3eaa.tar.zst powxy-06fc76b4f0afdf46b879eae1ae86d438070d3eaa.zip