API: Only allow CDNs to cache GET, HEAD, and OPTIONS requests #3931

Signed-off-by: Michael Mayer <michael@photoprism.app>
This commit is contained in:
Michael Mayer
2024-01-16 16:17:16 +01:00
parent e5aa76730f
commit c3b9b73d1d
10 changed files with 223 additions and 64 deletions

View File

@@ -5,9 +5,8 @@ import (
"github.com/gin-gonic/gin"
"github.com/photoprism/photoprism/internal/entity"
"github.com/photoprism/photoprism/internal/acl"
"github.com/photoprism/photoprism/internal/get"
"github.com/photoprism/photoprism/internal/server/limiter"
"github.com/photoprism/photoprism/pkg/clean"
"github.com/photoprism/photoprism/pkg/header"
"github.com/photoprism/photoprism/pkg/rnd"
@@ -23,54 +22,45 @@ func GetSession(router *gin.RouterGroup) {
// Disable caching of responses.
c.Header(header.CacheControl, header.CacheControlNoStore)
// Prevent CDNs from caching this endpoint.
if header.IsCdn(c.Request) {
c.AbortWithStatus(http.StatusNotFound)
return
}
id := clean.ID(c.Param("id"))
// Abort if session id is provided but invalid.
if id != "" && !rnd.IsSessionID(id) {
// Abort if session id is provided but invalid.
AbortBadRequest(c)
return
}
conf := get.Config()
// Get client IP and auth token from request headers.
clientIp := ClientIP(c)
authToken := AuthToken(c)
// Skip authentication if app is running in public mode.
var sess *entity.Session
if conf.Public() {
sess = get.Session().Public()
id = sess.ID
authToken = sess.AuthToken()
} else if clientIp != "" && limiter.Auth.Reject(clientIp) {
// Fail if authentication error rate limit is exceeded.
limiter.AbortJSON(c)
return
} else {
sess = Session(clientIp, authToken)
}
// Check if the session user is allowed to manage all accounts or update his/her own account.
s := AuthAny(c, acl.ResourceSessions, acl.Permissions{acl.ActionManage, acl.ActionView})
// Check if session is valid.
switch {
case sess == nil:
if clientIp != "" {
limiter.Auth.Reserve(clientIp)
}
case s.Abort(c):
return
case s.Expired(), s.ID == "":
AbortUnauthorized(c)
return
case sess.Expired(), sess.ID == "":
AbortUnauthorized(c)
return
case sess.Invalid(), id != "" && sess.ID != id && !conf.Public():
case s.Invalid(), id != "" && s.ID != id && !conf.Public():
AbortForbidden(c)
return
}
// Get auth token from headers.
authToken := AuthToken(c)
// Update user information.
sess.RefreshUser()
s.RefreshUser()
// Response includes user data, session data, and client config values.
response := GetSessionResponse(authToken, sess, get.Config().ClientSession(sess))
response := GetSessionResponse(authToken, s, get.Config().ClientSession(s))
// Return JSON response.
c.JSON(http.StatusOK, response)