100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
package main
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import (
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"fmt"
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"errors"
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"io"
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"os/exec"
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"os"
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"log"
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"net/http"
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"strings"
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)
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func myexec(w io.Writer, main string, params ...string) error {
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cmd := exec.Command(main, params...)
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cmd.Stdout = w
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cmd.Stderr = w
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err := cmd.Run()
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if err != nil {
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fmt.Fprintf(w, "Failed to run: %s %s\n", main, strings.Join(params, " "))
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}
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return err
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}
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func update(w io.Writer) error {
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fmt.Fprintf(w, "Start update...\n")
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_, err := os.Stat("./.git")
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if err != nil {
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fmt.Fprintf(w, ".git folder does not exist, creating it...\n")
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err := myexec(w, "git", "init")
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if err != nil {
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return err
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}
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}
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err = myexec(w, "git", "remote", "get-url", "origin")
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if err != nil {
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repo, exists := os.LookupEnv("WEBPULL_REPO")
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if !exists {
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fmt.Fprintf(w, "You must define WEBPULL_REPO env variable...\n")
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return errors.New("Missing environment variable WEBPULL_REPO")
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}
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fmt.Fprintf(w, "git remote is not yet set...\n")
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err := myexec(w, "git", "remote", "add", "origin", repo)
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if err != nil {
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return err
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}
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}
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err = myexec(w, "git", "pull", "origin", "master")
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if err != nil {
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fmt.Fprintf(w, "Failed to pull...\n")
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return err
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}
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_, err = os.Stat("./.webpull")
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if err != nil {
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fmt.Fprintf(w, "You must create an executable file named '.webpull' at the root of your repository.\nIf you have nothing to run, just create an empty bash script...\n")
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return err
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}
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err = myexec(w, "./.webpull")
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if err != nil {
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fmt.Fprintf(w, "An error occured during script execution\n")
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return err
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}
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fmt.Fprintf(w, "Success.\n")
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return nil
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}
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func main() {
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token, exists := os.LookupEnv("WEBPULL_TOKEN")
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if !exists {
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log.Fatal("Environment variable 'WEBPULL_TOKEN' must be defined")
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}
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if update(os.Stdout) != nil {
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log.Fatal("Initial 'update' failed")
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}
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fs := http.FileServer(http.Dir("./static"))
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http.HandleFunc("/update", func(w http.ResponseWriter, r *http.Request) {
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keys, ok := r.URL.Query()["token"]
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if !ok || len(keys[0]) < 1 {
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http.Error(w, "Missing 'token' query parameter", 401)
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return
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}
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if keys[0] != token {
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http.Error(w, "Wrong token", 401)
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return
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}
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update(w)
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})
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http.Handle("/", fs)
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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