ranpas: remove all dependencies except stdlib

Signed-off-by: Nagy Károly Gábriel <k@jpi.io>

go.mod

@@ -1,11 +1,3 @@
 module git.jpi.io/JPI/ranpass
 
 go 1.14
-
-require (
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
-	github.com/labstack/echo v3.3.10+incompatible
-	github.com/labstack/gommon v0.3.0 // indirect
-	github.com/valyala/fasttemplate v1.2.1 // indirect
-	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad // indirect
-)

go.sum

@@ -1,50 +0,0 @@
-github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
-github.com/GeertJohan/go.rice v1.0.2 h1:PtRw+Tg3oa3HYwiDBZyvOJ8LdIyf6lAovJJtr7YOAYk=
-github.com/GeertJohan/go.rice v1.0.2/go.mod h1:af5vUNlDNkCjOZeSGFgIJxDje9qdjsO6hshx0gTmZt4=
-github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
-github.com/daaku/go.zipexe v1.0.0 h1:VSOgZtH418pH9L16hC/JrgSNJbbAL26pj7lmD1+CGdY=
-github.com/daaku/go.zipexe v1.0.0/go.mod h1:z8IiR6TsVLEYKwXAoE/I+8ys/sDkgTzSL0CLnGVd57E=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgrijalva/jwt-go v1.0.2 h1:KPldsxuKGsS2FPWsNeg9ZO18aCrGKujPoWXn2yo+KQM=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
-github.com/foolin/echo-template v0.0.0-20190415034849-543a88245eec h1:BurQ3oNjJkB5+zibQGHw97kZOBN/DLlAKYlvfsacBD0=
-github.com/foolin/echo-template v0.0.0-20190415034849-543a88245eec/go.mod h1:4ePCtze3Ivy48ps0gJWfSByLgfqvT0rF+RpKQFe4Ja0=
-github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
-github.com/labstack/echo v1.4.4 h1:1bEiBNeGSUKxcPDGfZ/7IgdhJJZx8wV/pICJh4W2NJI=
-github.com/labstack/echo v3.3.10+incompatible h1:pGRcYk231ExFAyoAjAfD85kQzRJCRI8bbnE7CX5OEgg=
-github.com/labstack/echo v3.3.10+incompatible/go.mod h1:0INS7j/VjnFxD4E2wkz67b8cVwCLbBmJyDaka6Cmk1s=
-github.com/labstack/gommon v0.3.0 h1:JEeO0bvc78PKdyHxloTKiF8BD5iGrH8T6MSeGvSgob0=
-github.com/labstack/gommon v0.3.0/go.mod h1:MULnywXg0yavhxWKc+lOruYdAhDwPK9wf0OL7NoOu+k=
-github.com/mattn/go-colorable v0.1.2 h1:/bC9yWikZXAL9uJdulbSfyVNIR3n3trXl+v8+1sx8mU=
-github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
-github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
-github.com/mattn/go-isatty v0.0.9 h1:d5US/mDsogSGW37IV293h//ZFaeajb69h+EHFsv2xGg=
-github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2yME+cCiQ=
-github.com/nkovacs/streamquote v1.0.0/go.mod h1:BN+NaZ2CmdKqUuTUXUEm9j95B2TRbpOWpxbJYzzgUsc=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/sethvargo/go-password v0.2.0 h1:BTDl4CC/gjf/axHMaDQtw507ogrXLci6XRiLc7i/UHI=
-github.com/sethvargo/go-password v0.2.0/go.mod h1:Ym4Mr9JXLBycr02MFuVQ/0JHidNetSgbzutTr3zsYXE=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
-github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
-github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
-github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad h1:DN0cp81fZ3njFcrLCytUHRSUkqBjfTo4Tx9RJTWs0EY=
-golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

main.go

@@ -2,11 +2,10 @@ package main
 
 import (
 	"flag"
+	"fmt"
+	"log"
 	"net/http"
 	"strconv"
-
-	"github.com/labstack/echo"
-	"github.com/labstack/echo/middleware"
 )
 
 type passwordData struct {
@@ -20,48 +19,75 @@ type passwordData struct {
 
 var d, defaults passwordData
 
-func generatePassword(c echo.Context) error {
+func generatePassword(w http.ResponseWriter, r *http.Request) {
-
 	var err error
 
-	d.Length, err = strconv.Atoi(c.FormValue("length"))
+	if r.URL.Path != "/" {
-	if err != nil {
+		http.Error(w, "404 not found.", http.StatusNotFound)
-		d.Length = defaults.Length
+		return
 	}
 
-	d.Digits, err = strconv.Atoi(c.FormValue("digits"))
+	switch r.Method {
-	if err != nil {
+	case "GET":
-		d.Digits = defaults.Digits
+		d.Password, err = generate(defaults.Length, defaults.Digits, defaults.Symbols, false, false)
-	}
+		if err != nil {
+			d.Password = "Error: " + err.Error()
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(d.Password))
+			return
+		}
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte(d.Password))
+	case "POST":
+		if err = r.ParseForm(); err != nil {
+			w.WriteHeader(http.StatusUnprocessableEntity)
+			w.Write([]byte(fmt.Sprintf("ParseForm() err: %v", err)))
+			return
+		}
+		d.Length, err = strconv.Atoi(r.FormValue("length"))
+		if err != nil {
+			d.Length = defaults.Length
+		}
 
-	d.Symbols, err = strconv.Atoi(c.FormValue("symbols"))
+		d.Digits, err = strconv.Atoi(r.FormValue("digits"))
-	if err != nil {
+		if err != nil {
-		d.Symbols = defaults.Symbols
+			d.Digits = defaults.Digits
-	}
+		}
 
-	if c.FormValue("noupper") == "on" {
+		d.Symbols, err = strconv.Atoi(r.FormValue("symbols"))
-		d.NoUpper = true
+		if err != nil {
-	}
+			d.Symbols = defaults.Symbols
+		}
 
-	if c.FormValue("denyrepeat") == "on" {
+		if r.FormValue("noupper") == "on" {
-		d.DenyRepeat = true
+			d.NoUpper = true
-	}
+		}
 
-	// Generate a password
+		if r.FormValue("denyrepeat") == "on" {
-	d.Password, err = generate(d.Length, d.Digits, d.Symbols, d.NoUpper, !d.DenyRepeat)
+			d.DenyRepeat = true
-	if err != nil {
+		}
-		d.Password = "Error: " + err.Error()
-	}
-	if d.Length == 0 {
-		d.Password = "Error: password can not have zero length"
-	}
 
-	return c.String(http.StatusOK, d.Password)
+		d.Password, err = generate(d.Length, d.Digits, d.Symbols, d.NoUpper, !d.DenyRepeat)
+		if err != nil {
+			d.Password = "Error: " + err.Error()
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(d.Password))
+			return
+		}
+		if d.Length == 0 {
+			d.Password = "Error: password can not have zero length"
+		}
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte(d.Password))
+	default:
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte("Sorry, only GET and POST methods are supported."))
+	}
 }
 
-func checkHealth(c echo.Context) error {
+func checkHealth(w http.ResponseWriter, r *http.Request) {
-	s := `{"status":"OK"}`
+	w.WriteHeader(http.StatusOK)
-	return c.String(http.StatusOK, s)
+	w.Write([]byte("Status:OK"))
 }
 
 func main() {
@@ -77,17 +103,8 @@ func main() {
 	defaults.Digits = *digitsPtr
 	defaults.Symbols = *symbolsPtr
 
-	e := echo.New()
+	http.HandleFunc("/", generatePassword)
-	e.HideBanner = true
+	http.HandleFunc("/health", checkHealth)
 
-	// Middleware
+	log.Fatal(http.ListenAndServe(":"+strconv.Itoa(*portPtr), nil))
-	e.Use(middleware.Logger())
-	e.Use(middleware.Recover())
-
-	e.GET("/", generatePassword)
-	e.POST("/", generatePassword)
-
-	e.GET("/health", checkHealth)
-
-	e.Logger.Fatal(e.Start(":" + strconv.Itoa(*portPtr)))
 }