package main
import (
"bufio"
"crypto/md5"
"fmt"
"log"
"os"
"os/exec"
"strings"
)
// printf "USER:PASS" | base64 | while read a; do printf "%s" "$a" | md5sum; done
const AuthFilename = "/home/neale/.config/g.cgi/authorization"
const GitProjectRoot = "/home/neale/projects"
func execv(name string, arg ...string) {
c := exec.Command(name, arg...)
c.Stdin = os.Stdin
c.Stdout = os.Stdout
c.Stderr = os.Stderr
if err := c.Run(); err != nil {
log.Print(err)
}
}
func Authenticated() bool {
auth := os.Getenv("HTTP_AUTHORIZATION")
if auth == "" {
return false
}
// Build up a string to match
parts := strings.Split(auth, " ")
switch {
case len(parts) != 2:
return false
case parts[0] != "Basic":
return false
}
hash := md5.Sum([]byte(parts[1]))
hashhex := fmt.Sprintf("%x", hash)
authfile, err := os.Open(AuthFilename)
if err != nil {
log.Fatal(err)
}
defer authfile.Close()
scanner := bufio.NewScanner(authfile)
for scanner.Scan() {
line := scanner.Text()
if line == "" || strings.HasPrefix(line, "#") {
continue;
}
if line == hashhex {
os.Setenv("AUTH_TYPE", parts[0])
os.Setenv("REMOTE_USER", "XXX-neale")
return true
}
}
return false
}
func notice() {
fmt.Println("Content-type: text/html")
fmt.Println()
fmt.Println("")
fmt.Println("")
fmt.Println("Neale's Projects have Moved")
fmt.Println("")
fmt.Println("")
fmt.Println("Neale's Projects have Moved
")
fmt.Println("I've moved most of my stuff to")
fmt.Println("Github.")
fmt.Println("")
fmt.Println("X11 things may now be in the")
fmt.Println("9wm team.")
fmt.Println("
")
fmt.Println("Network security things may now be in the")
fmt.Println("dirtbags team.")
fmt.Println("")
}
func main() {
log.SetFlags(0)
//log.SetOutput(os.Stdout)
//log.SetPrefix("Status: 500 CGI Go Boom\nContent-type: text/plain\n\nERROR: ")
uri := os.Getenv("REQUEST_URI")
switch {
case strings.HasSuffix(uri, "git-upload-pack") || strings.HasSuffix(uri, "git-receive-pack"):
if Authenticated() {
os.Setenv("GIT_PROJECT_ROOT", GitProjectRoot)
execv("git", "http-backend")
} else {
fmt.Println("Status: 401 Not Authorized")
fmt.Println("Content-type: text/plain")
fmt.Println("WWW-Authenticate: Basic realm=\"git\"")
fmt.Println()
fmt.Println("Nope", os.Getenv("HTTP_AUTHORIZATION"))
}
default:
notice()
}
}