From a6789a7f3e3e3828c87bfd2c7551b7bbb64164a0 Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Tue, 15 Dec 2020 21:55:02 +0100
Subject: [PATCH] Added favicon

---
 src/client.c | 13 ++++++++-----
 src/http.h   |  7 +++++++
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/src/client.c b/src/client.c
index 6519ad4..79bc8fd 100644
--- a/src/client.c
+++ b/src/client.c
@@ -44,6 +44,7 @@ int client_request_handler(sock *client, int req_num) {
     char err_msg[256];
     err_msg[0] = 0;
     char *host, *hdr_connection, *webroot;
+    unsigned long content_length = 0;
 
     fd_set socket_fds;
     FD_ZERO(&socket_fds);
@@ -105,18 +106,20 @@ int client_request_handler(sock *client, int req_num) {
     } else {
         http_add_header_field(&res.hdr, "Connection", "close");
     }
-    int len = 0;
+    unsigned long len = 0;
     if (res.status->code >= 300 && res.status->code < 600) {
         http_error_msg *http_msg = http_get_error_msg(res.status->code);
         sprintf(msg_pre_buf, http_error_document, res.status->code, res.status->msg,
                 http_msg != NULL ? http_msg->err_msg : "", err_msg[0] != 0 ? err_msg : "");
         len = sprintf(msg_buf, http_default_document, res.status->code, res.status->msg,
-                      msg_pre_buf, res.status->code >= 300 && res.status->code < 400 ? "info" : "error");
-        sprintf(buf, "%i", len);
+                      msg_pre_buf, res.status->code >= 300 && res.status->code < 400 ? "info" : "error",
+                      http_error_icon);
+        sprintf(buf, "%li", len);
         http_add_header_field(&res.hdr, "Content-Length", buf);
         http_add_header_field(&res.hdr, "Content-Type", "text/html; charset=UTF-8");
     } else {
-        http_add_header_field(&res.hdr, "Content-Length", "0");
+        sprintf(buf, "%li", content_length);
+        http_add_header_field(&res.hdr, "Content-Length", buf);
     }
 
     http_send_response(client, &res);
@@ -124,7 +127,7 @@ int client_request_handler(sock *client, int req_num) {
         int snd_len = 0;
         while (snd_len < len) {
             if (client->enc) {
-                ret = SSL_write(client->ssl, msg_buf, len - snd_len);
+                ret = SSL_write(client->ssl, msg_buf, (int) (len - snd_len));
             } else {
                 ret = send(client->socket, msg_buf, len - snd_len, 0);
             }
diff --git a/src/http.h b/src/http.h
index d03f8e6..8bc60d2 100644
--- a/src/http.h
+++ b/src/http.h
@@ -118,6 +118,7 @@ const char *http_default_document =
         "    <title>%1$i %2$s</title>\n"
         "    <meta charset=\"UTF-8\"/>\n"
         "    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"/>\n"
+        "%5$s"
         "    <style>\n"
         "        html {font-family: \"Arial\", sans-serif; --error: #C00000; --info: #E0C000; --color: var(--%4$s);}\n"
         "        body {background-color: #F0F0F0; margin: 0.5em;}\n"
@@ -141,6 +142,12 @@ const char *http_error_document =
         "        <p>%3$s</p>\n"
         "        <p>%4$s</p>\n";
 
+const char *http_error_icon =
+        "    <link rel=\"shortcut icon\" type=\"image/svg+xml\" sizes=\"any\" href=\"data:image/svg+xml;base64,"
+        "PHN2ZyB3aWR0aD0iMTYiIGhlaWdodD0iMTYiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAw"
+        "L3N2ZyI+PHRleHQgeD0iNCIgeT0iMTIiIGZpbGw9IiNDMDAwMDAiIHN0eWxlPSJmb250LWZhbWls"
+        "eTonQXJpYWwnLHNhbnMtc2VyaWYiPjooPC90ZXh0Pjwvc3ZnPgo=\"/>\n";
+
 
 void http_to_camel_case(char *str);