address lookup and qr codes

Cargo.toml

@@ -16,3 +16,5 @@ serde_json = "1.0"
 serde_derive = "1.0"
 reqwest = { version = "0.10.4", features = ["blocking", "json"] }
 openssl = { version = "0.10", features = ["vendored"] }
+qrcode-generator = "1.0.6"
+base64 = "0.12.0"

src/main.rs

@@ -3,6 +3,7 @@
 #[macro_use] extern crate rocket_contrib;
 #[macro_use] extern crate serde_derive;
 extern crate reqwest;
+extern crate qrcode_generator;
 mod data_types;
 
 use rocket::http::RawStr;
@@ -12,6 +13,7 @@ use rocket_contrib::templates::Template;
 use rocket_contrib::serve::StaticFiles;
 use reqwest::blocking::{RequestBuilder, Client};
 use reqwest::Error;
+use qrcode_generator::QrCodeEcc;
 use std::env;
 use data_types::*;
 
@@ -96,6 +98,19 @@ fn get_transaction_by_hash(tx_hash: String) -> Template {
     Template::render("transaction", context)
 }
 
+#[get("/address/<wallet_address>")]
+fn show_wallet_address(wallet_address: String) -> Template {
+    let address_uri = format!("monero:{}", wallet_address);
+    let qr_code: String = qrcode_generator::to_svg_to_string(address_uri, QrCodeEcc::Low, 256, None)
+        .unwrap();
+    let qr_code: String = base64::encode(qr_code);
+    let context: JsonValue = json!({
+        "qr_code": qr_code,
+        "wallet_address": wallet_address
+    });
+    Template::render("address", context)
+}
+
 #[get("/search?<value>")]
 fn search(value: &RawStr) -> Redirect {
     // This search implementation is not ideal but it works.
@@ -140,6 +155,14 @@ fn search(value: &RawStr) -> Redirect {
                 }
             }
         }
+    } else if sl == 95 {
+        // Equal to 95 characters is probably a wallet address.
+        // For this let's just redirect to the `show_wallet_address` route.
+        return Redirect::found(uri!(show_wallet_address: value.as_str()))
+    } else if sl == 105 {
+        // Equal to 105 characters is probably an integrated address.
+        // For this let's just redirect to the `show_wallet_address` route.
+        return Redirect::found(uri!(show_wallet_address: value.as_str()))
     } else {
         // Anything else hasn't been implemented yet
         // so redirect to error response.
@@ -214,6 +237,7 @@ fn main() {
                     get_block_by_height,
                     get_block_by_hash,
                     get_transaction_by_hash,
+                    show_wallet_address,
                     error
                 ])
                 .mount("/static", StaticFiles::from("./static"))

static/css/main.css

@@ -287,3 +287,8 @@ p.subheader {
 .tx-table th, .tx-table td {
   text-align: center;
 }
+
+.center {
+  margin: 0 auto;
+  display: block;
+}

templates/address.html.tera

@@ -0,0 +1,35 @@
+{% extends "base" %}
+
+{% block content %}
+
+<section id="main">
+  <div class="container">
+    <div class="col-12">
+      <section>
+        <header class="major">
+          <h2>Wallet Address</h2>
+          <p class="subheader"><strong>Address</strong>: {{ wallet_address }}</p>
+        </header>
+        <div class="center">
+          <img src="data:image/svg+xml;base64,{{ qr_code }}" width=200 class="center">
+        </div>
+        <!-- Want to generate a QR code for incoming payment?
+        <form action="." method="get">
+          <input type="text" name="amount" placeholder="Enter amount for transaction.">
+          <input type="submit" value="Search">
+        </form> -->
+      </section>
+    </div>
+  </div>
+</section>
+
+<!--
+https://monero.fandom.com/wiki/URI_formatting
+address 	String 	hierarch.	The raw address (or the openalias?).
+tx_payment_id 	String 	?	The proposed payment ID of the transaction.
+recipient_name 	String 	?	The proposed contact name of the recipient.
+tx_amount 	UInt64 	query 	The proposed amount of the transaction in floating point units (eg. 5.3 XMR instead of 5300000000000)
+tx_description 	String 	fragment 	Describes the transaction which should be initiated.
+-->
+
+{% endblock content %}

templates/base.html.tera

@@ -14,7 +14,7 @@
           <nav id="nav">
           <div class="search">
             <form action="/search" method="get">
-              <input type="text" name="value" placeholder="Enter a transaction hash, block hash, or block height.">
+              <input type="text" name="value" placeholder="Enter a transaction hash, block hash, block height, or wallet address.">
               <input type="submit" value="Search">
             </form>
           </div>

templates/block.html.tera

@@ -9,7 +9,7 @@
           <header class="major">
             <h2>Block {{ block_header.height }}</h2>
             <p class="subheader"><strong>Hash</strong>: {{ block_header.hash }}</p>
-            <p class="subheader"><strong>Timestamp</strong>: {{ block_header.timestamp }}
+            <p class="subheader"><strong>Timestamp</strong>: {{ block_header.timestamp }}</p>
           </header>
           <div class="row">
             <div class="col-4 col-6-medium col-12-small">

templates/transaction.html.tera

@@ -17,7 +17,7 @@
           <header class="major">
             <h2>Transaction {{ tx_hash | truncate(length=4) }}</h2>
             <p class="subheader"><strong>Full Hash</strong>: {{ tx_hash }}</p>
-            <p class="subheader"><strong>Block Timestamp</strong>: {{ tx_info.0.block_timestamp }}
+            <p class="subheader"><strong>Block Timestamp</strong>: {% if tx_info.0.block_timestamp %}{{ tx_info.0.block_timestamp }}{% else %}?{% endif %}</p>
           </header>
           <div class="row">
             <div class="col-4 col-6-medium col-12-small">