From 80830ac3632c706b93eeaf05f8089cf5b12ac8f7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Mateusz=20Pi=C4=85tkowski?= Date: Wed, 23 Nov 2022 22:29:10 +0100 Subject: [PATCH] Migrated from https://git.wmi.amu.edu.pl/s416496/go-http-server --- server/doc/api.md | 59 ++++++++++++++++++++++++++ server/go.mod | 3 ++ server/go.sum | 94 ++++++++++++++++++++++++++++++++++++++++++ server/src/handlers.go | 44 ++++++++++++++++++++ server/src/scaner.go | 35 ++++++++++++++++ server/src/server.go | 56 +++++++++++++++++++++++++ server/src/timesync.go | 17 ++++++++ 7 files changed, 308 insertions(+) create mode 100644 server/doc/api.md create mode 100644 server/go.mod create mode 100644 server/go.sum create mode 100644 server/src/handlers.go create mode 100644 server/src/scaner.go create mode 100644 server/src/server.go create mode 100644 server/src/timesync.go diff --git a/server/doc/api.md b/server/doc/api.md new file mode 100644 index 0000000..8d2404a --- /dev/null +++ b/server/doc/api.md @@ -0,0 +1,59 @@ +# Musique server API draft + +## Server should be able to make following requests: + +### Send command to interpreter + +Request: +``` +POST /cmd/command +``` + +Response: +``` +{} +``` + +### Fetch state of the interpreter + +Request: +``` +GET /snapshot +``` + +Response: +``` +{ + "state": { + "oct": 4, + "bmp": 120, + ... + }, +} +``` + +## Server also should handle following request: + +### Synchronization of states + +Request: +``` +GET /sync +``` + +Response: +``` +{} +``` + +### Template for more requests + +Request: +``` + +``` + +Response: +``` + +``` \ No newline at end of file diff --git a/server/go.mod b/server/go.mod new file mode 100644 index 0000000..2628686 --- /dev/null +++ b/server/go.mod @@ -0,0 +1,3 @@ +module musique/http-server + +go 1.19 \ No newline at end of file diff --git a/server/go.sum b/server/go.sum new file mode 100644 index 0000000..e235e0d --- /dev/null +++ b/server/go.sum @@ -0,0 +1,94 @@ +github.com/PuerkitoBio/goquery v1.8.0 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@@ +package main + +import ( + "fmt" + "net/http" +) + +func cmdHandler(w http.ResponseWriter, r *http.Request) { + if r.URL.Path != "/cmd" { + http.Error(w, "404 not found.", http.StatusNotFound) + return + } + + if r.Method != "POST" { + http.Error(w, "Method is not supported.", http.StatusNotFound) + return + } + + if err := r.ParseForm(); err != nil { + fmt.Fprintf(w, "ParseForm() err: %v", err) + return + } + fmt.Fprintf(w, "POST request successful\n") + cmd := r.FormValue("cmd") + fmt.Fprintf(w, "Command = %s\n", cmd) +} + +func helloHandler(w http.ResponseWriter, r *http.Request) { + if r.URL.Path != "/hello" { + http.Error(w, "404 not found.", http.StatusNotFound) + return + } + + if r.Method != "GET" { + http.Error(w, "Method is not supported.", http.StatusNotFound) + return + } + + fmt.Fprintf(w, "Hello!") +} + +func scanHandler(w http.ResponseWriter, r *http.Request) { + +} diff --git a/server/src/scaner.go b/server/src/scaner.go new file mode 100644 index 0000000..d80766c --- /dev/null +++ b/server/src/scaner.go @@ -0,0 +1,35 @@ +package main + +import ( + "fmt" + "net" + "time" +) + +func scan() string { + information := "" + ifaces, _ := net.Interfaces() + for _, i := range ifaces { + addrs, _ := i.Addrs() + for _, j := range addrs { + ipv4, _, _ := net.ParseCIDR(j.String()) + if ipv4.IsGlobalUnicast() && ipv4.To4() != nil { + ipv4 = ipv4.To4() + ipv4 = ipv4.Mask(ipv4.DefaultMask()) + ipv4[3]++ + for i := 1; i < 256; i++ { + _, dialErr := net.DialTimeout("tcp", ipv4.String()+":8081", time.Duration(1)*time.Second) + if dialErr != nil { + fmt.Println("Cannot connect to " + ipv4.String()) + } else { + fmt.Println("Response from " + ipv4.String()) + information = fmt.Sprintf("%s\n%s", information, ipv4) + } + ipv4[3]++ + } + } + } + } + return information + +} diff --git a/server/src/server.go b/server/src/server.go new file mode 100644 index 0000000..fb2d9a5 --- /dev/null +++ b/server/src/server.go @@ -0,0 +1,56 @@ +package main + +import ( + "bufio" + "log" + "net" + "os" +) + +func main() { + + // HTTP part + // fileServer := http.FileServer(http.Dir("./static")) + // http.Handle("/", fileServer) + // http.HandleFunc("/cmd", cmdHandler) + // http.HandleFunc("/scan", scanHandler) + + // http.HandleFunc("/hello", helloHandler) + + // TCP part + l, err := net.Listen("tcp", ":8081") + if err != nil { + log.Fatal(err) + } + defer l.Close() + for { + conn, err := l.Accept() + if err != nil { + log.Fatal(err) + } + go func(c net.Conn) { + s := bufio.NewScanner(c) + conn.Write([]byte("> ")) + for s.Scan() { + resp := s.Text() + if resp == "scan" { + conn.Write([]byte("Scanning...\n")) + conn.Write([]byte(scan() + "\n")) + continue + } + if resp == "time" { + conn.Write([]byte(showTime().String() + "\n")) + } + if resp == "timesync" { + conn.Write([]byte(showMonoTime().String() + "\n")) + } + if resp == "quit" { + c.Close() + os.Exit(0) + } + conn.Write([]byte("> ")) + } + c.Close() + }(conn) + } +} diff --git a/server/src/timesync.go b/server/src/timesync.go new file mode 100644 index 0000000..0db5500 --- /dev/null +++ b/server/src/timesync.go @@ -0,0 +1,17 @@ +package main + +import ( + "time" +) + +func showTime() time.Time { + time := time.Now() + return time +} + +func showMonoTime() time.Duration { + start := time.Now() + t := time.Now() + elapsed := t.Sub(start) + return elapsed +}