GoToSocial/internal/web/base.go

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/*
GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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 (
"fmt"
"net/http"
"os"
"path/filepath"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
"github.com/spf13/viper"
"github.com/superseriousbusiness/gotosocial/internal/api"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/processing"
"github.com/superseriousbusiness/gotosocial/internal/router"
"github.com/superseriousbusiness/gotosocial/internal/uris"
)
const (
confirmEmailPath = "/" + uris.ConfirmEmailPath
tokenParam = "token"
)
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// Module implements the api.ClientModule interface for web pages.
type Module struct {
processor processing.Processor
}
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// New returns a new api.ClientModule for web pages.
func New(processor processing.Processor) api.ClientModule {
return &Module{
processor: processor,
}
}
func (m *Module) baseHandler(c *gin.Context) {
l := logrus.WithField("func", "BaseGETHandler")
l.Trace("serving index html")
host := viper.GetString(config.Keys.Host)
instance, err := m.processor.InstanceGet(c.Request.Context(), host)
if err != nil {
l.Debugf("error getting instance from processor: %s", err)
c.JSON(http.StatusInternalServerError, gin.H{"error": "internal server error"})
return
}
c.HTML(http.StatusOK, "index.tmpl", gin.H{
"instance": instance,
})
}
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// NotFoundHandler serves a 404 html page instead of a blank 404 error.
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func (m *Module) NotFoundHandler(c *gin.Context) {
l := logrus.WithField("func", "404")
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l.Trace("serving 404 html")
host := viper.GetString(config.Keys.Host)
instance, err := m.processor.InstanceGet(c.Request.Context(), host)
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if err != nil {
l.Debugf("error getting instance from processor: %s", err)
c.JSON(http.StatusInternalServerError, gin.H{"error": "internal server error"})
return
}
c.HTML(404, "404.tmpl", gin.H{
"instance": instance,
})
}
// Route satisfies the RESTAPIModule interface
func (m *Module) Route(s router.Router) error {
// serve static files from /assets
cwd, err := os.Getwd()
if err != nil {
return fmt.Errorf("error getting current working directory: %s", err)
}
assetBaseDir := viper.GetString(config.Keys.WebAssetBaseDir)
assetPath := filepath.Join(cwd, assetBaseDir)
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s.AttachStaticFS("/assets", fileSystem{http.Dir(assetPath)})
// Admin panel route, if it exists
adminPath := filepath.Join(cwd, assetBaseDir, "/admin")
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s.AttachStaticFS("/admin", fileSystem{http.Dir(adminPath)})
// serve front-page
s.AttachHandler(http.MethodGet, "/", m.baseHandler)
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// serve statuses
s.AttachHandler(http.MethodGet, "/:user/statuses/:id", m.threadTemplateHandler)
// serve email confirmation page at /confirm_email?token=whatever
s.AttachHandler(http.MethodGet, confirmEmailPath, m.confirmEmailGETHandler)
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// 404 handler
s.AttachNoRouteHandler(m.NotFoundHandler)
return nil
}