tjh.dev
forked from
tangled.org/core
this repo has no description
implement access levels
- new table tracks access levels between each DID and a repo
- creators of a repo are owners by default
- newly added members are writers by default
- introduces AccessLevel middleware to mask routes based on level
oppi.li
+210
-3
+80
db/access.go
+80
db/access.go
···
1
+
package db
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+
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import (
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"log"
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"strings"
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)
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+
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// forms a poset
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type Level int
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const (
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Reader Level = iota
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Writer
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Owner
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)
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var (
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levelMap = map[string]Level{
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"writer": Writer,
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"owner": Owner,
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}
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)
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func ParseLevel(str string) (Level, bool) {
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c, ok := levelMap[strings.ToLower(str)]
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return c, ok
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}
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func (l Level) String() string {
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switch l {
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case Owner:
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return "OWNER"
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case Writer:
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return "WRITER"
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case Reader:
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return "READER"
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default:
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return "READER"
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}
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}
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func (d *DB) SetAccessLevel(userDid string, repoDid string, repoName string, level Level) error {
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_, err := d.db.Exec(
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`insert
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into access_levels (repo_id, did, access)
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values ((select id from repos where did = $1 and name = $2), $3, $4)
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on conflict (repo_id, did)
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do update set access = $4;`,
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repoDid, repoName, userDid, level.String())
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return err
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}
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func (d *DB) SetOwner(userDid string, repoDid string, repoName string) error {
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return d.SetAccessLevel(userDid, repoDid, repoName, Owner)
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}
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func (d *DB) SetWriter(userDid string, repoDid string, repoName string) error {
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return d.SetAccessLevel(userDid, repoDid, repoName, Writer)
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}
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func (d *DB) GetAccessLevel(userDid string, repoDid string, repoName string) (Level, error) {
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row := d.db.QueryRow(`
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select access_levels.access
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from repos
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join access_levels
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on repos.id = access_levels.repo_id
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where access_levels.did = ? and repos.did = ? and repos.name = ?
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`, userDid, repoDid, repoName)
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var levelStr string
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err := row.Scan(&levelStr)
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if err != nil {
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log.Println(err)
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return Reader, err
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} else {
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level, _ := ParseLevel(levelStr)
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return level, nil
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}
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}
+10
-1
db/init.go
+10
-1
db/init.go
···
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description text not null,
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created timestamp default current_timestamp,
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unique(did, name)
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-
)
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);
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create table if not exists access_levels (
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id integer primary key autoincrement,
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repo_id integer not null,
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did text not null,
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access text not null check (access in ('OWNER', 'WRITER')),
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created timestamp default current_timestamp,
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unique(repo_id, did),
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foreign key (repo_id) references repos(id) on delete cascade
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);
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`)
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if err != nil {
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return nil, err
+35
routes/access.go
+35
routes/access.go
···
1
+
package routes
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+
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import (
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"github.com/go-chi/chi/v5"
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"github.com/icyphox/bild/db"
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auth "github.com/icyphox/bild/routes/auth"
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"log"
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"net/http"
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)
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func (h *Handle) AccessLevel(level db.Level) func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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repoOwnerHandle := chi.URLParam(r, "user")
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repoOwner, err := auth.ResolveIdent(r.Context(), repoOwnerHandle)
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if err != nil {
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log.Println("invalid did")
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http.Error(w, "invalid did", http.StatusNotFound)
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return
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}
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repoName := chi.URLParam(r, "name")
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session, _ := h.s.Get(r, "bild-session")
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did := session.Values["did"].(string)
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userLevel, err := h.db.GetAccessLevel(did, repoOwner.DID.String(), repoName)
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if err != nil || userLevel < level {
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log.Printf("unauthorized access: %s accessing %s/%s\n", did, repoOwnerHandle, repoName)
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log.Printf("wanted level: %s, got level %s", level.String(), userLevel.String())
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http.Error(w, "Forbidden", http.StatusUnauthorized)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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}
+10
-2
routes/handler.go
+10
-2
routes/handler.go
···
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"github.com/gorilla/sessions"
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"github.com/icyphox/bild/auth"
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"github.com/icyphox/bild/config"
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"github.com/icyphox/bild/db"
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database "github.com/icyphox/bild/db"
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"github.com/icyphox/bild/routes/middleware"
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"github.com/icyphox/bild/routes/tmpl"
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)
···
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}
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}
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-
func Setup(c *config.Config, db *db.DB) (http.Handler, error) {
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func Setup(c *config.Config, db *database.DB) (http.Handler, error) {
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r := chi.NewRouter()
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s := sessions.NewCookieStore([]byte("TODO_CHANGE_ME"))
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t, err := tmpl.Load(c.Dirs.Templates)
···
99
99
r.Get("/archive/{file}", h.Archive)
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r.Get("/commit/{ref}", h.Diff)
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r.Get("/refs/", h.Refs)
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r.Group(func(r chi.Router) {
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// settings page is only accessible to owners
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r.Use(h.AccessLevel(database.Owner))
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r.Route("/settings", func(r chi.Router) {
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r.Put("/collaborators", h.Collaborators)
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})
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})
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// Catch-all routes
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r.Get("/*", h.Multiplex)
+75
routes/routes.go
+75
routes/routes.go
···
431
431
}
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432
}
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433
434
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// func (h *Handle) addUserToRepo(w http.ResponseWriter, r *http.Request) {
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// repoOwnerHandle := chi.URLParam(r, "user")
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// repoOwner, err := auth.ResolveIdent(r.Context(), repoOwnerHandle)
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// if err != nil {
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// log.Println("invalid did")
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// http.Error(w, "invalid did", http.StatusNotFound)
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// return
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// }
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// repoName := chi.URLParam(r, "name")
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// session, _ := h.s.Get(r, "bild-session")
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// did := session.Values["did"].(string)
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//
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// err := h.db.SetWriter()
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// }
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func (h *Handle) Collaborators(w http.ResponseWriter, r *http.Request) {
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// put repo resolution in middleware
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repoOwnerHandle := chi.URLParam(r, "user")
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repoOwner, err := auth.ResolveIdent(r.Context(), repoOwnerHandle)
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if err != nil {
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log.Println("invalid did")
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http.Error(w, "invalid did", http.StatusNotFound)
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return
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}
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repoName := chi.URLParam(r, "name")
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switch r.Method {
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case http.MethodGet:
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// TODO fetch a list of collaborators and their access rights
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http.Error(w, "unimpl 1", http.StatusInternalServerError)
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return
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case http.MethodPut:
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newUser := r.FormValue("newUser")
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if newUser == "" {
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// TODO: htmx this
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http.Error(w, "unimpl 2", http.StatusInternalServerError)
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return
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}
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newUserIdentity, err := auth.ResolveIdent(r.Context(), newUser)
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if err != nil {
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// TODO: htmx this
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log.Println("invalid handle")
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http.Error(w, "unimpl 3", http.StatusBadRequest)
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return
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}
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err = h.db.SetWriter(newUserIdentity.DID.String(), repoOwner.DID.String(), repoName)
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if err != nil {
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// TODO: htmx this
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log.Println("failed to add collaborator")
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http.Error(w, "unimpl 4", http.StatusInternalServerError)
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return
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}
485
+
486
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log.Println("success")
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return
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+
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}
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}
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+
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func (h *Handle) ServeStatic(w http.ResponseWriter, r *http.Request) {
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f := chi.URLParam(r, "file")
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f = filepath.Clean(filepath.Join(h.c.Dirs.Static, f))
···
554
612
return
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}
556
614
615
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// For use by repoguard
616
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didPath := filepath.Join(repoPath, "did")
617
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err = os.WriteFile(didPath, []byte(did), 0644)
618
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if err != nil {
619
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h.WriteOOBNotice(w, "repo", "Error creating repo. Try again later.")
620
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return
621
+
}
622
+
623
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// TODO: add repo & setting-to-owner must happen in the same transaction
557
624
err = h.db.AddRepo(did, name, description)
558
625
if err != nil {
626
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log.Println(err)
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h.WriteOOBNotice(w, "repo", "Error creating repo. Try again later.")
628
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return
629
+
}
630
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// current user is set to owner of did/name repo
631
+
err = h.db.SetOwner(did, did, name)
632
+
if err != nil {
633
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log.Println(err)
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h.WriteOOBNotice(w, "repo", "Error creating repo. Try again later.")
560
635
return
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636
}