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Encode group location in the status.json file.
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5 changed files with 67 additions and 34 deletions
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@ -28,31 +28,33 @@ server to client direction.
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## Before connecting
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Before it connects and joins a group, a client may perform an HTTP GET
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request on the URL `/public-groups.json`. This yields a JSON array of
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objects, one for each group that has been marked public in its
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configuration file. Each object has the following fields:
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The client needs to know the location of the group, the (user-visible) URL
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at which the group is found. This may be obtained either by explicit
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configuration by the user, or by parsing the `/public-groups.json` file
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which may contain an array of group statuses (see below).
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A client then performs an HTTP GET request on the file `.status.json` at
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the group's location. This yields a single JSON object, which contains
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the following fields:
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- `name`: the group's name
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- `displayName` (optional): a longer version of the name used for display;
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- `description` (optional): a user-readable description.
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- `location`: the group's location
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- `endpoint`: the URL of the server's WebSocket endpoint
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- `displayName`: a longer version of the name used for display;
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- `description`: a user-readable description;
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- `authServer`: the URL of the authentication server, if any;
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- `authPortal`: the uRL of the authentication portal, if any;
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- `locked`: true if the group is locked;
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- `clientCount`: the number of clients currently in the group.
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If token-based authorisation is in use for the group, then the dictionary
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contains the following additional field:
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All fields are optional except `name`, `location` and `endpoint`.
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- `authServer`: the URL of the authorisation server.
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A client may also fetch the URL `/group/name/.status.json` to retrieve the
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status of a single group. If the group has not been marked as public,
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then the fields `locked` and `clientCount` are omitted.
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## Connecting
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The client connects to the websocket at `/ws`. Galene uses a symmetric,
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asynchronous protocol: there are no requests and responses, and most
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messages may be sent by either peer.
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The client connects to the websocket at the URL obtained at the previous
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step. Galene uses a symmetric, asynchronous protocol: there are no
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requests and responses, and most messages may be sent by either peer.
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## Message syntax
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@ -1177,6 +1177,7 @@ func (desc *Description) GetPermission(group string, creds ClientCredentials) (s
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type Status struct {
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Name string `json:"name"`
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Location string `json:"location"`
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Endpoint string `json:"endpoint"`
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DisplayName string `json:"displayName,omitempty"`
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Description string `json:"description,omitempty"`
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@ -1186,10 +1187,40 @@ type Status struct {
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ClientCount *int `json:"clientCount,omitempty"`
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}
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func (g *Group) Status(authentified bool, endpoint string) Status {
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// Status returns a group's status.
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// Base is the base URL for groups; if omitted, then both the Location and
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// Endpoint members are omitted from the result.
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func (g *Group) Status(authentified bool, base string) Status {
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desc := g.Description()
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var location, endpoint string
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if base != "" {
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burl, err := url.Parse(base)
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if err == nil {
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wss := "wss"
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if burl.Scheme == "http" {
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wss = "ws"
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}
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l := url.URL{
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Scheme: burl.Scheme,
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Host: burl.Host,
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Path: path.Join(burl.Path, g.name) + "/",
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}
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location = l.String()
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e := url.URL{
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Scheme: wss,
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Host: burl.Host,
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Path: "/ws",
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}
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endpoint = e.String()
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} else {
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log.Printf("Couldn't parse base URL %v", base)
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}
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}
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d := Status{
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Name: g.name,
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Location: location,
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Endpoint: endpoint,
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DisplayName: desc.DisplayName,
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AuthServer: desc.AuthServer,
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@ -1207,11 +1238,11 @@ func (g *Group) Status(authentified bool, endpoint string) Status {
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return d
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}
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func GetPublic() []Status {
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func GetPublic(base string) []Status {
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gs := make([]Status, 0)
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Range(func(g *Group) bool {
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if g.Description().Public {
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gs = append(gs, g.Status(false, ""))
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gs = append(gs, g.Status(false, base))
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}
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return true
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})
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@ -42,7 +42,7 @@ func TestGroup(t *testing.T) {
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t.Errorf("Expected [], got %v", subs)
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}
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if public := GetPublic(); len(public) != 1 || public[0].Name != "group/subgroup" {
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if public := GetPublic(""); len(public) != 1 || public[0].Name != "group/subgroup" {
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t.Errorf("Expected group/subgroup, got %v", public)
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}
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}
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@ -110,7 +110,7 @@ async function listPublicGroups() {
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let td = document.createElement('td');
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let a = document.createElement('a');
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a.textContent = group.displayName || group.name;
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a.href = '/group/' + group.name + '/';
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a.href = group.location;
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td.appendChild(a);
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tr.appendChild(td);
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let td2 = document.createElement('td');
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@ -332,9 +332,18 @@ func groupHandler(w http.ResponseWriter, r *http.Request) {
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serveFile(w, r, filepath.Join(StaticRoot, "galene.html"))
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}
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func groupBase(r *http.Request) string {
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base := url.URL{
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Scheme: r.URL.Scheme,
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Host: r.Host,
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Path: "/group/",
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}
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return base.String()
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}
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func groupStatusHandler(w http.ResponseWriter, r *http.Request) {
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path := path.Dir(r.URL.Path)
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name := parseGroupName("/group/", path)
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pth := path.Dir(r.URL.Path)
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name := parseGroupName("/group/", pth)
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if name == "" {
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notFound(w)
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return
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@ -351,16 +360,7 @@ func groupStatusHandler(w http.ResponseWriter, r *http.Request) {
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return
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}
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scheme := "wss"
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if Insecure {
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scheme = "ws"
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}
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endpoint := url.URL{
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Scheme: scheme,
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Host: r.Host,
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Path: "/ws",
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}
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d := g.Status(false, endpoint.String())
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d := g.Status(false, groupBase(r))
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w.Header().Set("content-type", "application/json")
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w.Header().Set("cache-control", "no-cache")
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@ -380,7 +380,7 @@ func publicHandler(w http.ResponseWriter, r *http.Request) {
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return
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}
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g := group.GetPublic()
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g := group.GetPublic(groupBase(r))
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e := json.NewEncoder(w)
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e.Encode(g)
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}
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