feat(agb02): protocol change

machines/agb02/agb/agb.cpp

@@ -1,6 +1,6 @@
-#include <curlpp/cURLpp.hpp>
-#include <curlpp/Easy.hpp>
-#include <curlpp/Options.hpp>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <arpa/inet.h>
 #include <gpiod.hpp>
 #include <iostream>
 #include <fstream>
@@ -11,8 +11,7 @@ using namespace std::literals::chrono_literals;
 constexpr std::chrono::microseconds debounce = 40ms;
 constexpr std::chrono::microseconds poll_period = 5ms;
 constexpr std::chrono::microseconds server_ratelimit = 50ms;
-
-constexpr const char* url = "https://agb.hackens.org/api/control-box";
+constexpr std::chrono::microseconds retry_timeout = 500ms;
 
 constexpr std::pair<double, double> joystick_movement(1.0, 1.0);
 
@@ -20,14 +19,14 @@ const gpiod::line::offsets drive_down = { 21, 13, 6 };
 
 const gpiod::line::offsets decoder = { 2, 3, 4, 14, 15, 18, 23, 24 }; // lsbf
 const gpiod::line::offsets joystick = { 0, 0, 0, 0 }; // x+, y+, x-, y-
-const gpiod::line::offset black_button = 0;
-const gpiod::line::offset white_button = 0;
+const gpiod::line::offset black_button = 16;
+const gpiod::line::offset white_button = 20;
 
 const gpiod::line_settings input_settings =
   gpiod::line_settings()
     .set_direction(gpiod::line::direction::INPUT)
     .set_bias(gpiod::line::bias::PULL_UP)
-    .set_active_low(true)
+    .set_active_low(false)
     .set_debounce_period(debounce);
 
 constexpr std::array<uint8_t, 256> decoder_table =
@@ -46,8 +45,8 @@ inline void clamp_decoder(uint8_t& decoder, int move){
 }
 
 int main(const int argc, char const* const* const argv) {
-  if(argc < 3) {
-    std::cerr << "usage: agb gpiodevice tokenfile" << std::endl;
+  if(argc < 2) {
+    std::cerr << "usage: agb gpiodevice" << std::endl;
     return 1;
   }
 
@@ -64,10 +63,11 @@ int main(const int argc, char const* const* const argv) {
           .set_output_value(gpiod::line::value::INACTIVE)
       )
       .add_line_settings({ black_button, white_button }, input_settings)
-      .add_line_settings(joystick, input_settings)
+      .add_line_settings(joystick,
+          gpiod::line_settings(input_settings)
+            .set_active_low(true))
       .add_line_settings(decoder,
           gpiod::line_settings(input_settings)
-            .set_active_low(false)
             .set_debounce_period(0ms))
       .do_request();
 
@@ -76,15 +76,21 @@ int main(const int argc, char const* const* const argv) {
 
   /// init server communication ///
 
-  cURLpp::initialize();
-  std::string token;
+  int socket_file_desc = socket(AF_INET, SOCK_STREAM, 0);
   {
-    std::ifstream tokenFile(argv[2]);
-    std::getline(tokenFile, token);
+    sockaddr_in socket_addr = {
+      .sin_family = AF_INET,
+      .sin_port = htons(1235),
+      .sin_addr = { .s_addr = inet_addr("10.10.10.1") }
+    };
+    int con_ret = connect(socket_file_desc,
+                          reinterpret_cast<const sockaddr*>(&socket_addr),
+                          sizeof(socket_addr));
+    if(con_ret < 0) {
+      std::cerr << "Failed to open tcp socket." << std::endl;
+      return 1;
+    }
   }
-  std::list<std::string> header;
-  header.push_back("Content-Type: application/json");
-  header.push_back("Authorization: Bearer " + token);
 
   /// internal state and buffers ///
 
@@ -97,7 +103,7 @@ int main(const int argc, char const* const* const argv) {
   bool white_pressed = false;
   bool black_pressed = false;
 
-  bool has_changed = false;
+  bool has_changed = true;
   std::chrono::time_point last_send = std::chrono::system_clock::now();
   std::string postData;
 
@@ -150,10 +156,6 @@ int main(const int argc, char const* const* const argv) {
     /// server notification
     std::chrono::time_point now = std::chrono::system_clock::now();
     if(has_changed && (now - last_send > server_ratelimit)){
-      curlpp::Easy request;
-      request.setOpt(curlpp::options::Url(url));
-      request.setOpt(curlpp::options::HttpHeader(header));
-
       postData.clear();
       std::format_to(std::back_inserter(postData), "{{"
           "\"pan\": {},"
@@ -161,22 +163,22 @@ int main(const int argc, char const* const* const argv) {
           "\"focus\": {},"
           "\"whiteButton\": {},"
           "\"blackButton\": {}"
-        "}}",
+        "}}\n",
         spot_pos.first,
         spot_pos.second,
         int(decoder_pos),
         white_pressed,
         black_pressed
       );
-      request.setOpt(curlpp::options::PostFields(postData));
-      request.setOpt(curlpp::options::PostFieldSize(postData.size()));
 
-      //request.perform();
-//      std::cout << std::chrono::system_clock::now() - now << std::endl;
-      std::cout << postData << std::endl;
-
-      has_changed = false;
-      last_send = now;
+      int wrote = write(socket_file_desc, postData.data(), postData.size());
+      if(wrote < postData.size()){
+        std::cerr << "Failed to send data, retrying in " << retry_timeout << "." << std::endl;
+        last_send = now + retry_timeout - server_ratelimit;
+      } else {
+        has_changed = false;
+        last_send = now;
+      }
     }
   }
 }

machines/agb02/agb/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, libgpiod, curlpp, curl }:
+{ stdenv, libgpiod }:
 stdenv.mkDerivation rec {
   pname = "agb";
   version = "oct-24";
@@ -7,8 +7,6 @@ stdenv.mkDerivation rec {
   buildPhase = ''
     g++ --std=c++23 agb.cpp -o agb \
       -L${libgpiod}/lib -lgpiodcxx -I${libgpiod}/include \
-      -L${curl.out}/lib -lcurl -I${curl.dev}/include \
-      -L${curlpp}/lib -lcurlpp -I${curlpp}/include
   '';
   installPhase = ''
     mkdir -p $out/bin

machines/agb02/secrets/default.nix

@@ -8,8 +8,4 @@
     file = ./wg.age;
     owner = "systemd-network";
   };
-  age.secrets."token" = {
-    file = ./token.age;
-    # owner = "systemd-network";
-  };
 }

machines/agb02/secrets/secrets.nix

@@ -5,5 +5,4 @@ let
       (builtins.readFile (../../../pubkeys + "/${user}.keys")));
 in {
   "wg.age".publicKeys = (readPubkeys "catvayor") ++ (readPubkeys "sinavir") ++ (readPubkeys "agb02");
-  "token.age".publicKeys = (readPubkeys "catvayor") ++ (readPubkeys "sinavir") ++ (readPubkeys "agb02");
 }

meta.nix

@@ -41,7 +41,7 @@ let
 
       agb02 = {
         deployment = {
-          targetHost = null;
+          targetHost = "10.10.10.6";
         };
         arch = "aarch64-linux";
         imports = [ agenix ];