78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
// MIT License
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//
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// Copyright (c) 2024 vinchent <vinchent@vinchent.xyz>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package authn
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import (
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"fmt"
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"net/http"
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"git.vinchent.xyz/vinchent/howmuch/internal/pkg/core"
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"git.vinchent.xyz/vinchent/howmuch/internal/pkg/errno"
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"git.vinchent.xyz/vinchent/howmuch/internal/pkg/log"
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"git.vinchent.xyz/vinchent/howmuch/internal/pkg/shared"
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"git.vinchent.xyz/vinchent/howmuch/internal/pkg/token"
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"github.com/gin-gonic/gin"
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)
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var ErrTokenInvalid = &errno.Errno{
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HTTP: http.StatusUnauthorized,
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Code: errno.ErrorCode(errno.AuthFailureCode, "TokenInvalid"),
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Message: "invalid token",
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}
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var ErrLoggedOut = &errno.Errno{
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HTTP: http.StatusUnauthorized,
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Code: errno.ErrorCode(errno.AuthFailureCode, "LoggedOut"),
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Message: "logged out, please log in",
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}
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// Authn authenticates a user's access by validating their token.
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func Authn(cache core.Cache) gin.HandlerFunc {
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return func(ctx *gin.Context) {
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tk, err := token.ParseRequest(ctx)
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if err != nil || tk == nil {
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core.WriteResponse(ctx, ErrTokenInvalid, nil)
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ctx.Abort()
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return
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}
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key := fmt.Sprintf("jwt:%s", tk.Identity)
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val, err := cache.Get(ctx, key)
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if err != nil {
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log.ErrorLog("cache get token", "err", err)
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ctx.Abort()
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return
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}
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if val != "" {
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// blacklist
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core.WriteResponse(ctx, ErrLoggedOut, nil)
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ctx.Abort()
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return
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}
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ctx.Header(shared.XUserName, tk.Identity)
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ctx.Next()
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}
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}
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