Finds the plan file and returns its contents

handler.cpp

@@ -1,7 +1,12 @@
 #include "handler.hpp"
+#include <filesystem>
+#include <fstream>
+#include <string_view>
 
-std::string process(const std::string &username){
+const std::filesystem::path kPATH{"/var/finger/users/"};
-    try{
+
+std::string process(const std::string &username) {
+  try {
     // Check for directory traversal patterns
     if (username.find("../") != std::string::npos ||
         username.find("..\\") != std::string::npos ||
@@ -16,12 +21,49 @@ std::string process(const std::string &username){
       throw InvalidInput("Directory traversal detected in username");
     }
 
-        if (username.find("/") != std::string::npos){
+    if (username.find("/") != std::string::npos) {
       throw InvalidInput("Path detected in username");
     }
-    }
+  } catch (InvalidInput &e) {
-    catch(InvalidInput&e){
     return std::string("InvalidInput: ") + e.what() + std::string("\r\n");
   }
+
+  // Attempt to open the plan file (if any) and return the contents as a string
+  std::filesystem::path planPath = kPATH / username;
+
+  // Check if the plan file exists
+  if (!std::filesystem::exists(planPath)) {
+    // If no plan file exists, return just the username
     return username;
+  }
+
+  // Try to read the plan file
+  try {
+    std::ifstream planFile(planPath);
+    if (!planFile.is_open()) {
+      return username;
+    }
+
+    std::string content;
+    std::string line;
+    while (std::getline(planFile, line)) {
+      content += line + "\n";
+    }
+
+    // Return the plan content with proper line endings
+    if (!content.empty() && content.back() == '\n') {
+      content.pop_back(); // Remove the last newline
+      content += "\r\n";
+      return content;
+    } else if (!content.empty()) {
+      content += "\r\n";
+      return content;
+    } else {
+      // If file exists but is empty, return just the username
+      return username;
+    }
+  } catch (...) {
+    // If there's any error reading the file, just return the username
+    return username;
+  }
 }

main.cpp

@@ -22,18 +22,33 @@ namespace this_coro = boost::asio::this_coro;
 
 awaitable<std::string> dofinger(const std::string &username) {
   co_return process(username);
-  //co_return std::string("this is some finger information for ") + username + std::string("\r\n");
+  // co_return std::string("this is some finger information for ") + username +
+  // std::string("\r\n");
 }
 
 awaitable<void> echo(tcp::socket socket) {
   try {
     char data[1024];
+    auto bytes_read =
         co_await socket.async_read_some(boost::asio::buffer(data), deferred);
-    auto response = co_await dofinger(std::string(data));
+    // strip \r\n from data
-    co_await async_write(socket, boost::asio::buffer(response), deferred);
+    std::string username(data, bytes_read);
+    // Remove trailing \r\n characters
+    while (!username.empty() &&
+           (username.back() == '\r' || username.back() == '\n')) {
+      username.pop_back();
+    }
+    auto response = co_await dofinger(username);
+    if (response.compare(std::string(username)) == 0) {
+      // No plan found
+      co_await async_write(
+          socket, boost::asio::buffer(std::string("No plan found\r\n")),
+          deferred);
       co_return;
     }
-  catch (std::exception &e) {
+    co_await async_write(socket, boost::asio::buffer(response), deferred);
+    co_return;
+  } catch (std::exception &e) {
     std::printf("echo Exception: %s\n", e.what());
   }
 }