gotosocial/internal/web/profile.go

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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package web
import (
"context"
"encoding/json"
"fmt"
"net/http"
"strings"
"github.com/gin-gonic/gin"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
)
func (m *Module) profileGETHandler(c *gin.Context) {
ctx := c.Request.Context()
// We'll need the instance later, and we can also use it
// before then to make it easier to return a web error.
instance, errWithCode := m.processor.InstanceGetV1(ctx)
if errWithCode != nil {
apiutil.WebErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
return
}
// Return instance we already got from the db,
// don't try to fetch it again when erroring.
instanceGet := func(ctx context.Context) (*apimodel.InstanceV1, gtserror.WithCode) {
return instance, nil
}
// Parse account targetUsername from the URL.
targetUsername, errWithCode := apiutil.ParseUsername(c.Param(apiutil.UsernameKey))
if errWithCode != nil {
apiutil.WebErrorHandler(c, errWithCode, instanceGet)
return
}
// Normalize requested username:
//
// - Usernames on our instance are (currently) always lowercase.
//
// todo: Update this logic when different username patterns
// are allowed, and/or when status slugs are introduced.
targetUsername = strings.ToLower(targetUsername)
// Check what type of content is being requested. If we're getting an AP
// request on this endpoint we should render the AP representation instead.
accept, err := apiutil.NegotiateAccept(c, apiutil.HTMLOrActivityPubHeaders...)
if err != nil {
apiutil.WebErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), instanceGet)
return
}
if accept == string(apiutil.AppActivityJSON) || accept == string(apiutil.AppActivityLDJSON) {
// AP account representation has been requested.
m.returnAPAccount(c, targetUsername, accept, instanceGet)
return
}
// text/html has been requested. Proceed with getting the web view of the account.
// Fetch the target account so we can do some checks on it.
targetAccount, errWithCode := m.processor.Account().GetWeb(ctx, targetUsername)
if errWithCode != nil {
apiutil.WebErrorHandler(c, errWithCode, instanceGet)
return
}
// If target account is suspended, this page should not be visible.
// TODO: change this to 410?
if targetAccount.Suspended {
err := fmt.Errorf("target account %s is suspended", targetUsername)
apiutil.WebErrorHandler(c, gtserror.NewErrorNotFound(err), instanceGet)
return
}
// Only generate RSS link if account has RSS enabled.
var rssFeed string
if targetAccount.EnableRSS {
rssFeed = "/@" + targetAccount.Username + "/feed.rss"
}
// Only allow search engines / robots to
// index if account is discoverable.
var robotsMeta string
if targetAccount.Discoverable {
robotsMeta = robotsMetaAllowSome
}
// We need to change our response slightly if the
// profile visitor is paging through statuses.
var (
maxStatusID = apiutil.ParseMaxID(c.Query(apiutil.MaxIDKey), "")
paging = maxStatusID != ""
pinnedStatuses []*apimodel.WebStatus
)
if !paging {
// Client opened bare profile (from the top)
// so load + display pinned statuses.
pinnedStatuses, errWithCode = m.processor.Account().WebStatusesGetPinned(ctx, targetAccount.ID)
if errWithCode != nil {
apiutil.WebErrorHandler(c, errWithCode, instanceGet)
return
}
}
// Get statuses from maxStatusID onwards (or from top if empty string).
statusResp, errWithCode := m.processor.Account().WebStatusesGet(ctx, targetAccount.ID, maxStatusID)
if errWithCode != nil {
apiutil.WebErrorHandler(c, errWithCode, instanceGet)
return
}
// Prepare stylesheets for profile.
stylesheets := make([]string, 0, 7)
// Basic profile stylesheets.
stylesheets = append(
stylesheets,
[]string{
cssFA,
cssStatus,
cssThread,
cssProfile,
}...,
)
// User-selected theme if set.
if theme := targetAccount.Theme; theme != "" {
stylesheets = append(
stylesheets,
themesPathPrefix+"/"+theme,
)
}
// Custom CSS for this user last in cascade.
stylesheets = append(
stylesheets,
"/@"+targetAccount.Username+"/custom.css",
)
page := apiutil.WebPage{
Template: "profile.tmpl",
Instance: instance,
OGMeta: apiutil.OGBase(instance).WithAccount(targetAccount),
Stylesheets: stylesheets,
Javascript: []string{jsFrontend},
Extra: map[string]any{
"account": targetAccount,
"rssFeed": rssFeed,
"robotsMeta": robotsMeta,
"statuses": statusResp.Items,
"statuses_next": statusResp.NextLink,
"pinned_statuses": pinnedStatuses,
"show_back_to_top": paging,
},
}
apiutil.TemplateWebPage(c, page)
}
// returnAPAccount returns an ActivityPub representation of
// target account. It will do http signature authentication.
func (m *Module) returnAPAccount(
c *gin.Context,
targetUsername string,
accept string,
instanceGet func(ctx context.Context) (*apimodel.InstanceV1, gtserror.WithCode),
) {
user, errWithCode := m.processor.Fedi().UserGet(c.Request.Context(), targetUsername, c.Request.URL)
if errWithCode != nil {
apiutil.WebErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
return
}
b, err := json.Marshal(user)
if err != nil {
err := gtserror.Newf("could not marshal json: %w", err)
apiutil.WebErrorHandler(c, gtserror.NewErrorInternalError(err), m.processor.InstanceGetV1)
return
}
c.Data(http.StatusOK, accept, b)
}