169 lines
5.4 KiB
Go
169 lines
5.4 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"log"
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"net/http"
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"net/url"
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"os"
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"path"
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"path/filepath"
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"strings"
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"text/template"
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"srs.epita.fr/fic-server/admin/api"
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"srs.epita.fr/fic-server/admin/sync"
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"srs.epita.fr/fic-server/libfic"
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"srs.epita.fr/fic-server/settings"
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)
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var StaticDir string
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type ResponseWriterPrefix struct {
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real http.ResponseWriter
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prefix string
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}
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func (r ResponseWriterPrefix) Header() http.Header {
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return r.real.Header()
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}
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func (r ResponseWriterPrefix) WriteHeader(s int) {
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if v, exists := r.real.Header()["Location"]; exists {
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r.real.Header().Set("Location", r.prefix + v[0])
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}
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r.real.WriteHeader(s)
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}
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func (r ResponseWriterPrefix) Write(z []byte) (int, error) {
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return r.real.Write(z)
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}
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func StripPrefix(prefix string, h http.Handler) http.Handler {
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if prefix == "" {
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return h
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}
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if prefix != "/" && r.URL.Path == "/" {
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http.Redirect(w, r, prefix + "/", http.StatusFound)
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} else if p := strings.TrimPrefix(r.URL.Path, prefix); len(p) < len(r.URL.Path) {
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r2 := new(http.Request)
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*r2 = *r
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r2.URL = new(url.URL)
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*r2.URL = *r.URL
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r2.URL.Path = p
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h.ServeHTTP(ResponseWriterPrefix{w, prefix}, r2)
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} else {
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h.ServeHTTP(w, r)
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}
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})
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}
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func main() {
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cloudDAVBase := ""
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cloudUsername := "fic"
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cloudPassword := ""
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localImporterDirectory := ""
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localImporterSymlink := false
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// Read paremeters from environment
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if v, exists := os.LookupEnv("FICCLOUD_URL"); exists {
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cloudDAVBase = v
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}
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if v, exists := os.LookupEnv("FICCLOUD_USER"); exists {
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cloudUsername = v
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}
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if v, exists := os.LookupEnv("FICCLOUD_PASS"); exists {
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cloudPassword = v
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}
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// Read parameters from command line
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var bind = flag.String("bind", "127.0.0.1:8081", "Bind port/socket")
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var dsn = flag.String("dsn", fic.DSNGenerator(), "DSN to connect to the MySQL server")
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var baseURL = flag.String("baseurl", "/", "URL prepended to each URL")
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flag.StringVar(&StaticDir, "static", "./htdocs-admin/", "Directory containing static files")
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flag.StringVar(&api.TeamsDir, "teams", "./TEAMS", "Base directory where save teams JSON files")
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flag.StringVar(&settings.SettingsDir, "settings", settings.SettingsDir, "Base directory where load and save settings")
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flag.StringVar(&fic.FilesDir, "files", fic.FilesDir, "Base directory where found challenges files, local part")
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flag.StringVar(&localImporterDirectory, "localimport", localImporterDirectory,
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"Base directory where found challenges files to import, local part")
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flag.BoolVar(&localImporterSymlink, "localimportsymlink", localImporterSymlink,
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"Copy files or just create symlink?")
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flag.StringVar(&cloudDAVBase, "clouddav", cloudDAVBase,
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"Base directory where found challenges files to import, cloud part")
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flag.StringVar(&cloudUsername, "clouduser", cloudUsername, "Username used to sync")
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flag.StringVar(&cloudPassword, "cloudpass", cloudPassword, "Password used to sync")
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flag.BoolVar(&fic.OptionalDigest, "optionaldigest", fic.OptionalDigest, "Is the digest required when importing files?")
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flag.BoolVar(&fic.StrongDigest, "strongdigest", fic.StrongDigest, "Are BLAKE2b digests required or is SHA-1 good enough?")
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flag.Parse()
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log.SetPrefix("[admin] ")
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// Instantiate importer
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if localImporterDirectory != "" && cloudDAVBase != "" {
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log.Fatal("Cannot have both --clouddav and --localimport defined.")
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return
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} else if localImporterDirectory != "" {
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sync.GlobalImporter = sync.LocalImporter{localImporterDirectory, localImporterSymlink}
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} else if cloudDAVBase != "" {
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sync.GlobalImporter, _ = sync.NewCloudImporter(cloudDAVBase, cloudUsername, cloudPassword)
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}
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if sync.GlobalImporter != nil {
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log.Println("Using", sync.GlobalImporter.Kind())
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}
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// Sanitize options
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var err error
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log.Println("Checking paths...")
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if StaticDir, err = filepath.Abs(StaticDir); err != nil {
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log.Fatal(err)
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}
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if fic.FilesDir, err = filepath.Abs(fic.FilesDir); err != nil {
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log.Fatal(err)
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}
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if api.TeamsDir, err = filepath.Abs(api.TeamsDir); err != nil {
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log.Fatal(err)
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}
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if settings.SettingsDir, err = filepath.Abs(settings.SettingsDir); err != nil {
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log.Fatal(err)
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}
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if fic.FilesDir, err = filepath.Abs(fic.FilesDir); err != nil {
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log.Fatal(err)
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}
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if *baseURL != "/" {
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tmp := path.Clean(*baseURL)
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baseURL = &tmp
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} else {
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tmp := ""
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baseURL = &tmp
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}
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log.Println("Opening database...")
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if err := fic.DBInit(*dsn); err != nil {
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log.Fatal("Cannot open the database: ", err)
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}
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defer fic.DBClose()
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log.Println("Creating database...")
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if err := fic.DBCreate(); err != nil {
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log.Fatal("Cannot create database: ", err)
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}
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// Update base URL on main page
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log.Println("Changing base URL to", *baseURL + "/", "...")
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if file, err := os.OpenFile(path.Join(StaticDir, "index.html"), os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.FileMode(0644)); err != nil {
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log.Println("Unable to open index.html: ", err)
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} else if indexTmpl, err := template.New("index").Parse(indextpl); err != nil {
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log.Println("Cannot create template: ", err)
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} else if err := indexTmpl.Execute(file, map[string]string{"urlbase": path.Clean(path.Join(*baseURL + "/", "nuke"))[:len(path.Clean(path.Join(*baseURL + "/", "nuke"))) - 4]}); err != nil {
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log.Println("An error occurs during template execution: ", err)
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}
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// Serve content
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log.Println(fmt.Sprintf("Ready, listening on %s", *bind))
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if err := http.ListenAndServe(*bind, StripPrefix(*baseURL, api.Router())); err != nil {
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log.Fatal("Unable to listen and serve: ", err)
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}
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}
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