Api/v1/statuses (#11)

This PR adds:
Statuses

    New status creation.
    View existing status
    Delete a status
    Fave a status
    Unfave a status
    See who's faved a status

Media

    Upload media attachment and store/retrieve it
    Upload custom emoji and store/retrieve it

Fileserver

    Serve files from storage

Testing

    Test models, testrig -- run a GTS test instance and play around with it.

1 files changed, 130 insertions, 0 deletions

diff --git a/internal/apimodule/admin/emojicreate.go b/internal/apimodule/admin/emojicreate.go
new file mode 100644
index 000000000..91457c07c
--- /dev/null
+++ b/internal/apimodule/admin/emojicreate.go
@@ -0,0 +1,130 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 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 admin
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/sirupsen/logrus"
+	mastotypes "github.com/superseriousbusiness/gotosocial/internal/mastotypes/mastomodel"
+	"github.com/superseriousbusiness/gotosocial/internal/media"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+func (m *adminModule) emojiCreatePOSTHandler(c *gin.Context) {
+	l := m.log.WithFields(logrus.Fields{
+		"func":        "emojiCreatePOSTHandler",
+		"request_uri": c.Request.RequestURI,
+		"user_agent":  c.Request.UserAgent(),
+		"origin_ip":   c.ClientIP(),
+	})
+
+	// make sure we're authed with an admin account
+	authed, err := oauth.MustAuth(c, true, true, true, true) // posting a status is serious business so we want *everything*
+	if err != nil {
+		l.Debugf("couldn't auth: %s", err)
+		c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+		return
+	}
+	if !authed.User.Admin {
+		l.Debugf("user %s not an admin", authed.User.ID)
+		c.JSON(http.StatusForbidden, gin.H{"error": "not an admin"})
+		return
+	}
+
+	// extract the media create form from the request context
+	l.Tracef("parsing request form: %+v", c.Request.Form)
+	form := &mastotypes.EmojiCreateRequest{}
+	if err := c.ShouldBind(form); err != nil {
+		l.Debugf("error parsing form %+v: %s", c.Request.Form, err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not parse form: %s", err)})
+		return
+	}
+
+	// Give the fields on the request form a first pass to make sure the request is superficially valid.
+	l.Tracef("validating form %+v", form)
+	if err := validateCreateEmoji(form); err != nil {
+		l.Debugf("error validating form: %s", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// open the emoji and extract the bytes from it
+	f, err := form.Image.Open()
+	if err != nil {
+		l.Debugf("error opening emoji: %s", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not open provided emoji: %s", err)})
+		return
+	}
+	buf := new(bytes.Buffer)
+	size, err := io.Copy(buf, f)
+	if err != nil {
+		l.Debugf("error reading emoji: %s", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not read provided emoji: %s", err)})
+		return
+	}
+	if size == 0 {
+		l.Debug("could not read provided emoji: size 0 bytes")
+		c.JSON(http.StatusBadRequest, gin.H{"error": "could not read provided emoji: size 0 bytes"})
+		return
+	}
+
+	// allow the mediaHandler to work its magic of processing the emoji bytes, and putting them in whatever storage backend we're using
+	emoji, err := m.mediaHandler.ProcessLocalEmoji(buf.Bytes(), form.Shortcode)
+	if err != nil {
+		l.Debugf("error reading emoji: %s", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not process emoji: %s", err)})
+		return
+	}
+
+	mastoEmoji, err := m.mastoConverter.EmojiToMasto(emoji)
+	if err != nil {
+		l.Debugf("error converting emoji to mastotype: %s", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": fmt.Sprintf("could not convert emoji: %s", err)})
+		return
+	}
+
+	if err := m.db.Put(emoji); err != nil {
+		l.Debugf("database error while processing emoji: %s", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": fmt.Sprintf("database error while processing emoji: %s", err)})
+		return
+	}
+
+	c.JSON(http.StatusOK, mastoEmoji)
+}
+
+func validateCreateEmoji(form *mastotypes.EmojiCreateRequest) error {
+	// check there actually is an image attached and it's not size 0
+	if form.Image == nil || form.Image.Size == 0 {
+		return errors.New("no emoji given")
+	}
+
+	// a very superficial check to see if the media size limit is exceeded
+	if form.Image.Size > media.EmojiMaxBytes {
+		return fmt.Errorf("file size limit exceeded: limit is %d bytes but emoji was %d bytes", media.EmojiMaxBytes, form.Image.Size)
+	}
+
+	return util.ValidateEmojiShortcode(form.Shortcode)
+}