From 895d5fea41177e444c18f4fdc820fffa5f67d5bf Mon Sep 17 00:00:00 2001
From: Rasmus Dahlberg <rasmus@rgdd.se>
Date: Sat, 9 Dec 2023 17:08:45 +0100
Subject: Add drafty skeleton

---
 pkg/server/errors.go   |   1 +
 pkg/server/messages.go |   4 ++
 pkg/server/server.go   | 106 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 111 insertions(+)
 create mode 100644 pkg/server/errors.go
 create mode 100644 pkg/server/messages.go
 create mode 100644 pkg/server/server.go

(limited to 'pkg/server')

diff --git a/pkg/server/errors.go b/pkg/server/errors.go
new file mode 100644
index 0000000..abb4e43
--- /dev/null
+++ b/pkg/server/errors.go
@@ -0,0 +1 @@
+package server
diff --git a/pkg/server/messages.go b/pkg/server/messages.go
new file mode 100644
index 0000000..50edded
--- /dev/null
+++ b/pkg/server/messages.go
@@ -0,0 +1,4 @@
+package server
+
+type MessageNodeSubmission struct {
+}
diff --git a/pkg/server/server.go b/pkg/server/server.go
new file mode 100644
index 0000000..2d10c4b
--- /dev/null
+++ b/pkg/server/server.go
@@ -0,0 +1,106 @@
+package server
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"strings"
+	"time"
+)
+
+const (
+	EndpointAddChain  = "/add-chain"
+	EndpointGetStatus = "/get-status"
+
+	DefaultAddress    = "localhost:2009"
+	DefaultConfigFile = "/home/rgdd/.config/silent-ct/config.json" // FIXME
+)
+
+type Nodes []Node
+
+type Node struct {
+	Name    string   `json:"name"`
+	Secret  string   `json:"secret"`
+	Domains []string `json:"issues"`
+}
+
+type Config struct {
+	Address string // hostname[:port] or unix:///path/to/file.sock
+	Nodes   Nodes  // Which nodes are trusted to issue what certificates
+}
+
+type Server struct {
+	Config
+	http.Server
+
+	unixSocket bool // true if listening with a unix socket
+	eventCh    chan MessageNodeSubmission
+	errorCh    chan error
+}
+
+func New(cfg Config) (Server, error) {
+	mux := http.NewServeMux()
+	srv := Server{Config: cfg, Server: http.Server{Handler: mux}}
+	mux.HandleFunc(EndpointAddChain, func(w http.ResponseWriter, r *http.Request) { srv.addChain(w, r) })
+	mux.HandleFunc(EndpointGetStatus, func(w http.ResponseWriter, r *http.Request) { srv.getStatus(w, r) })
+	if len(srv.Address) == 0 {
+		srv.Config.Address = DefaultAddress
+	}
+	if strings.HasPrefix(srv.Config.Address, "unix://") {
+		srv.Config.Address = srv.Config.Address[7:]
+		srv.unixSocket = true
+	}
+	return srv, nil
+}
+
+func (srv *Server) Run(ctx context.Context, submitCh chan MessageNodeSubmission, errorCh chan error) error {
+	srv.eventCh = submitCh
+	srv.errorCh = errorCh
+	network := "unix"
+	if !srv.unixSocket {
+		network = "tcp"
+	}
+
+	listener, err := net.Listen(network, srv.Address)
+	if err != nil {
+		return fmt.Errorf("listen: %v", err)
+	}
+	defer listener.Close()
+
+	exitErr := make(chan error, 1)
+	defer close(exitErr)
+	go func() {
+		exitErr <- srv.Serve(listener)
+	}()
+
+	select {
+	case err := <-exitErr:
+		if err != nil && err != http.ErrServerClosed {
+			return fmt.Errorf("serve: %v", err)
+		}
+	case <-ctx.Done():
+		tctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+		if err := srv.Shutdown(tctx); err != nil {
+			return fmt.Errorf("shutdown: %v", err)
+		}
+	}
+	return nil
+}
+
+func (srv *Server) getStatus(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Only HTTP GET method is allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	fmt.Fprintf(w, "OK\n")
+}
+
+func (srv *Server) addChain(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Only HTTP POST method is allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	fmt.Fprintf(w, "TODO: HTTP POST /add-chain\n")
+}
-- 
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