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Fix STS AssumeRole route conflict with MultipartUpload (#7574)

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Since AssumeRole API was introduced we have a wrong route
match which results in certain clients failing to upload objects
using multipart because, multipart POST conflicts with STS POST
AssumeRole API.

Write a proper matcher function which verifies the route more
appropriately such that both can co-exist.
This commit is contained in:
Harshavardhana 2019-04-23 15:55:41 -07:00 committed by kannappanr
parent f767a2538a
commit 35d19a4ae2
1 changed files with 12 additions and 5 deletions
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17
cmd/sts-handlers.go
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@ -25,6 +25,7 @@ import (
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/auth"
"github.com/minio/minio/pkg/iam/validator"
"github.com/minio/minio/pkg/wildcard"
)
const (
@ -49,13 +50,19 @@ func registerSTSRouter(router *mux.Router) {
stsRouter := router.NewRoute().PathPrefix("/").Subrouter()
// Assume roles with no JWT, handles AssumeRole.
stsRouter.Methods("POST").HeadersRegexp("Content-Type", "application/x-www-form-urlencoded*").
HeadersRegexp("Authorization", "AWS4-HMAC-SHA256*").
HandlerFunc(httpTraceAll(sts.AssumeRole))
stsRouter.Methods("POST").MatcherFunc(func(r *http.Request, rm *mux.RouteMatch) bool {
ctypeOk := wildcard.MatchSimple("application/x-www-form-urlencoded*", r.Header.Get("Content-Type"))
authOk := wildcard.MatchSimple("AWS4-HMAC-SHA256*", r.Header.Get("Authorization"))
noQueries := len(r.URL.Query()) == 0
return ctypeOk && authOk && noQueries
}).HandlerFunc(httpTraceAll(sts.AssumeRole))
// Assume roles with JWT handler, handles both ClientGrants and WebIdentity.
stsRouter.Methods("POST").HeadersRegexp("Content-Type", "application/x-www-form-urlencoded*").
HandlerFunc(httpTraceAll(sts.AssumeRoleWithJWT))
stsRouter.Methods("POST").MatcherFunc(func(r *http.Request, rm *mux.RouteMatch) bool {
ctypeOk := wildcard.MatchSimple("application/x-www-form-urlencoded*", r.Header.Get("Content-Type"))
noQueries := len(r.URL.Query()) == 0
return ctypeOk && noQueries
}).HandlerFunc(httpTraceAll(sts.AssumeRoleWithJWT))
// AssumeRoleWithClientGrants
stsRouter.Methods("POST").HandlerFunc(httpTraceAll(sts.AssumeRoleWithClientGrants)).