mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-10-30 18:12:26 -05:00
5e2bf0bdca* [chore] Remove years from all license headers Years or year ranges aren't required in license headers. Many projects have removed them in recent years and it avoids a bit of yearly toil. In many cases our copyright claim was also a bit dodgy since we added the 2021-2023 header to files created after 2021 but you can't claim copyright into the past that way. * [chore] Add license header check This ensures a license header is always added to any new file. This avoids maintainers/reviewers needing to remember to check for and ask for it in case a contribution doesn't include it. * [chore] Add missing license headers * [chore] Further updates to license header * Use the more common // indentend comment format * Remove the hack we had for the linter now that we use the // format * Add SPDX license identifier
110 lines
3 KiB
Go
110 lines
3 KiB
Go
// 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 middleware
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"crypto/rand"
|
|
"encoding/base32"
|
|
"encoding/binary"
|
|
"io"
|
|
"sync"
|
|
"time"
|
|
|
|
"codeberg.org/gruf/go-kv"
|
|
"github.com/gin-gonic/gin"
|
|
"github.com/superseriousbusiness/gotosocial/internal/log"
|
|
)
|
|
|
|
type ctxType string
|
|
|
|
var (
|
|
// ridCtxKey is the key underwhich we store request IDs in a context.
|
|
ridCtxKey ctxType = "id"
|
|
|
|
// crand provides buffered reads of random input.
|
|
crand = bufio.NewReader(rand.Reader)
|
|
mrand sync.Mutex
|
|
|
|
// base32enc is a base 32 encoding based on a human-readable character set (no padding).
|
|
base32enc = base32.NewEncoding("0123456789abcdefghjkmnpqrstvwxyz").WithPadding(-1)
|
|
)
|
|
|
|
// generateID generates a new ID string.
|
|
func generateID() string {
|
|
// 0:8 = timestamp
|
|
// 8:12 = entropy
|
|
//
|
|
// inspired by ULID.
|
|
b := make([]byte, 12)
|
|
|
|
// Get current time in milliseconds.
|
|
ms := uint64(time.Now().UnixMilli())
|
|
|
|
// Store binary time data in byte buffer.
|
|
binary.LittleEndian.PutUint64(b[0:8], ms)
|
|
|
|
mrand.Lock()
|
|
// Read random bits into buffer end.
|
|
_, _ = io.ReadFull(crand, b[8:12])
|
|
mrand.Unlock()
|
|
|
|
// Encode the binary time+entropy ID.
|
|
return base32enc.EncodeToString(b)
|
|
}
|
|
|
|
// RequestID fetches the stored request ID from context.
|
|
func RequestID(ctx context.Context) string {
|
|
id, _ := ctx.Value(ridCtxKey).(string)
|
|
return id
|
|
}
|
|
|
|
// AddRequestID returns a gin middleware which adds a unique ID to each request (both response header and context).
|
|
func AddRequestID(header string) gin.HandlerFunc {
|
|
log.Hook(func(ctx context.Context, kvs []kv.Field) []kv.Field {
|
|
if id, _ := ctx.Value(ridCtxKey).(string); id != "" {
|
|
// Add stored request ID to log entry fields.
|
|
return append(kvs, kv.Field{K: "requestID", V: id})
|
|
}
|
|
return kvs
|
|
})
|
|
|
|
return func(c *gin.Context) {
|
|
// Look for existing ID.
|
|
id := c.GetHeader(header)
|
|
|
|
if id == "" {
|
|
// Generate new ID.
|
|
//
|
|
// 0:8 = timestamp
|
|
// 8:12 = entropy
|
|
id = generateID()
|
|
// Set the request ID in the req header in case we pass the request along
|
|
// to another service
|
|
c.Request.Header.Set(header, id)
|
|
}
|
|
|
|
// Store request ID in new request ctx and set new gin request obj.
|
|
ctx := context.WithValue(c.Request.Context(), ridCtxKey, id)
|
|
c.Request = c.Request.WithContext(ctx)
|
|
|
|
// Set the request ID in the rsp header.
|
|
c.Writer.Header().Set(header, id)
|
|
}
|
|
}
|