From 1407954ab9ea966907f3493ff7d89d94a3856be2 Mon Sep 17 00:00:00 2001
From: tastytea <tastytea@tastytea.de>
Date: Sun, 15 Nov 2020 17:46:17 +0100
Subject: [PATCH] Exit if REQUEST_METHOD is wrong.

---
 src/generators/rss.cpp | 9 ++++++++-
 src/main.cpp           | 8 ++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/generators/rss.cpp b/src/generators/rss.cpp
index 05596ec..7b05a13 100644
--- a/src/generators/rss.cpp
+++ b/src/generators/rss.cpp
@@ -191,8 +191,16 @@ int main(int /*argc*/, char * /*argv*/[])
     using std::cerr;
     using std::cout;
     using std::exception;
+    using std::getenv;
     using std::runtime_error;
 
+    cout << "Content-Type: application/rss+xml\r\n\r\n";
+
+    char *env{getenv("REQUEST_METHOD")};
+    if (env != nullptr && string(env) != "GET")
+    {
+        return 0;
+    }
 
     git::init(true);
 
@@ -209,7 +217,6 @@ int main(int /*argc*/, char * /*argv*/[])
             // Ignore, use old version of repo.
         }
         const auto entries{files::read_json_files(true)};
-        cout << "Content-Type: application/rss+xml\r\n\r\n";
         write_rss(cout, entries, cgi::get_tags());
     }
     catch (const exception &e)
diff --git a/src/main.cpp b/src/main.cpp
index 7a505dc..7bd9c8d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,12 +25,14 @@
 
 #include <git2/global.h>
 
+#include <cstdlib>
 #include <exception>
 #include <iostream>
 
 using std::cerr;
 using std::cout;
 using std::exception;
+using std::getenv;
 
 using namespace FediBlock;
 
@@ -38,6 +40,12 @@ int main()
 {
     cout << "Content-Type: text/plain; charset=utf-8\r\n\r\n";
 
+    char *env{getenv("REQUEST_METHOD")};
+    if (env != nullptr && string(env) != "POST")
+    {
+        return 0;
+    }
+
     git::init(true);
     gitea::init();