allow admin to reset user passwords

this adds a new button when viewing a user as an admin, that will
generate and store a new password for the user

admin.go

@@ -16,12 +16,14 @@ import (
 	"net/http"
 	"runtime"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/gorilla/mux"
 	"github.com/writeas/impart"
 	"github.com/writeas/web-core/auth"
 	"github.com/writeas/web-core/log"
+	"github.com/writeas/web-core/passgen"
 	"github.com/writeas/writefreely/appstats"
 	"github.com/writeas/writefreely/config"
 )
@@ -167,25 +169,34 @@ func handleViewAdminUser(app *App, u *User, w http.ResponseWriter, r *http.Reque
 
 	p := struct {
 		*UserPage
-		Config  config.AppCfg
-		Message string
+		Config      config.AppCfg
+		Message     string
+		OwnUserPage bool
 
-		User     *User
-		Colls    []inspectedCollection
-		LastPost string
-
-		TotalPosts int64
+		User        *User
+		Colls       []inspectedCollection
+		LastPost    string
+		NewPassword string
+		TotalPosts  int64
 	}{
 		Config:  app.cfg.App,
 		Message: r.FormValue("m"),
 		Colls:   []inspectedCollection{},
 	}
 
+	flashes, _ := getSessionFlashes(app, w, r, nil)
+	for _, flash := range flashes {
+		if strings.HasPrefix(flash, "SUCCESS: ") {
+			p.NewPassword = strings.TrimPrefix(flash, "SUCCESS: ")
+		}
+	}
+
 	var err error
 	p.User, err = app.db.GetUserForAuth(username)
 	if err != nil {
 		return impart.HTTPError{http.StatusInternalServerError, fmt.Sprintf("Could not get user: %v", err)}
 	}
+	p.OwnUserPage = u.ID == p.User.ID
 	p.UserPage = NewUserPage(app, r, u, p.User.Username, nil)
 	p.TotalPosts = app.db.GetUserPostsCount(p.User.ID)
 	lp, err := app.db.GetUserLastPostTime(p.User.ID)
@@ -230,6 +241,37 @@ func handleViewAdminUser(app *App, u *User, w http.ResponseWriter, r *http.Reque
 	return nil
 }
 
+func handleAdminResetUserPass(app *App, u *User, w http.ResponseWriter, r *http.Request) error {
+	vars := mux.Vars(r)
+	username := vars["username"]
+	if username == "" {
+		return impart.HTTPError{http.StatusFound, "/admin/users"}
+	}
+	// Generate new random password since none supplied
+	pass := passgen.New()
+	hashedPass, err := auth.HashPass([]byte(pass))
+	if err != nil {
+		return impart.HTTPError{http.StatusInternalServerError, fmt.Sprintf("Could not create password hash: %v", err)}
+	}
+
+	userIDVal := r.FormValue("user")
+	log.Info("ADMIN: Changing user %s password", userIDVal)
+	id, err := strconv.Atoi(userIDVal)
+	if err != nil {
+		return impart.HTTPError{http.StatusBadRequest, fmt.Sprintf("Invalid user ID: %v", err)}
+	}
+
+	err = app.db.ChangePassphrase(int64(id), true, "", hashedPass)
+	if err != nil {
+		return impart.HTTPError{http.StatusInternalServerError, fmt.Sprintf("Could not update passphrase: %v", err)}
+	}
+	log.Info("ADMIN: Successfully changed.")
+
+	addSessionFlash(app, w, r, fmt.Sprintf("SUCCESS: %s", pass), nil)
+
+	return impart.HTTPError{http.StatusFound, fmt.Sprintf("/admin/user/%s", username)}
+}
+
 func handleViewAdminPages(app *App, u *User, w http.ResponseWriter, r *http.Request) error {
 	p := struct {
 		*UserPage

routes.go

@@ -144,6 +144,7 @@ func InitRoutes(apper Apper, r *mux.Router) *mux.Router {
 	write.HandleFunc("/admin", handler.Admin(handleViewAdminDash)).Methods("GET")
 	write.HandleFunc("/admin/users", handler.Admin(handleViewAdminUsers)).Methods("GET")
 	write.HandleFunc("/admin/user/{username}", handler.Admin(handleViewAdminUser)).Methods("GET")
+	write.HandleFunc("/admin/user/{username}", handler.Admin(handleAdminResetUserPass)).Methods("POST")
 	write.HandleFunc("/admin/pages", handler.Admin(handleViewAdminPages)).Methods("GET")
 	write.HandleFunc("/admin/page/{slug}", handler.Admin(handleViewAdminPage)).Methods("GET")
 	write.HandleFunc("/admin/update/config", handler.AdminApper(handleAdminUpdateConfig)).Methods("POST")

templates/user/admin/view-user.tmpl

@@ -7,12 +7,32 @@ table.classy th {
 h3 {
 	font-weight: normal;
 }
+input.copy-text {
+	text-align: center;
+	    font-size: 1.2em;
+	    color: #555;
+	margin-left: 1rem;
+}
+button[type="submit"].danger {
+	padding-left: 2rem;
+	padding-right: 2rem;
+}
 </style>
 <div class="snug content-container">
 	{{template "admin-header" .}}
 
 	<h2 id="posts-header">{{.User.Username}}</h2>
-
+	{{if .NewPassword}}<p class="alert success">New password for user <strong>{{.User.Username}}</strong> is
+		<input
+		type="text"
+		class="copy-text"
+		value="{{.NewPassword}}"
+		onfocus="if (this.select) this.select(); else this.setSelectionRange(0, this.value.length);"
+		readonly />
+		<br/><br/>
+		You must share this new password with the user, this is the only time it will be displayed.
+		</p>
+	{{end}}
 	<table class="classy export">
 		<tr>
 			<th>No.</th>
@@ -38,6 +58,21 @@ h3 {
 			<th>Last Post</th>
 			<td>{{if .LastPost}}{{.LastPost}}{{else}}Never{{end}}</td>
 		</tr>
+		<tr>
+			<th>Password</th>
+			<td>
+				{{if not .OwnUserPage}}
+					<form id="reset-form" action="/admin/user/{{.User.Username}}" method="post" autocomplete="false">
+					<input type="hidden" name="user" value="{{.User.ID}}"/>
+					<button
+					class="danger"
+					type="submit">Reset</button>
+				</form>
+				{{else}}
+				<a href="/me/settings" title="Go to reset password page">Change your password</a>
+				{{end}}
+			</td>
+		</tr>
 	</table>
 
 	<h2>Blogs</h2>
@@ -83,5 +118,13 @@ h3 {
 	{{end}}
 </div>
 
+<script type="text/javascript">
+	form = document.getElementById("reset-form");
+	form.addEventListener('submit', function(e) {
+		e.preventDefault();
+		agreed = confirm("Really reset password for {{.User.Username}}?\nYou will have to record and share the new password with them.");
+		if (agreed === true) { form.submit();}
+	});
+</script>
 {{template "footer" .}}
 {{end}}