Bump google.golang.org/api

vendor/github.com/google/martian/querystring/query_string_verifier.go

@@ -0,0 +1,127 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package querystring
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/google/martian"
+	"github.com/google/martian/parse"
+	"github.com/google/martian/verify"
+)
+
+func init() {
+	parse.Register("querystring.Verifier", verifierFromJSON)
+}
+
+type verifier struct {
+	key, value string
+	err        *martian.MultiError
+}
+
+type verifierJSON struct {
+	Name  string               `json:"name"`
+	Value string               `json:"value"`
+	Scope []parse.ModifierType `json:"scope"`
+}
+
+// NewVerifier returns a new param verifier.
+func NewVerifier(key, value string) (verify.RequestVerifier, error) {
+	if key == "" {
+		return nil, fmt.Errorf("no key provided to param verifier")
+	}
+	return &verifier{
+		key:   key,
+		value: value,
+		err:   martian.NewMultiError(),
+	}, nil
+}
+
+// ModifyRequest verifies that the request's URL params match the given params
+// in all modified requests. If no value is provided, the verifier will only
+// check if the given key is present. An error will be added to the contained
+// *MultiError if the param is unmatched.
+func (v *verifier) ModifyRequest(req *http.Request) error {
+	// skip requests to API
+	ctx := martian.NewContext(req)
+	if ctx.IsAPIRequest() {
+		return nil
+	}
+
+	if err := req.ParseForm(); err != nil {
+		err := fmt.Errorf("request(%v) parsing failed; could not parse query parameters", req.URL)
+		v.err.Add(err)
+		return nil
+	}
+	vals, ok := req.Form[v.key]
+	if !ok {
+		err := fmt.Errorf("request(%v) param verification error: key %v not found", req.URL, v.key)
+		v.err.Add(err)
+		return nil
+	}
+	if v.value == "" {
+		return nil
+	}
+	for _, val := range vals {
+		if v.value == val {
+			return nil
+		}
+	}
+	err := fmt.Errorf("request(%v) param verification error: got %v for key %v, want %v", req.URL, strings.Join(vals, ", "), v.key, v.value)
+	v.err.Add(err)
+	return nil
+}
+
+// VerifyRequests returns an error if verification for any request failed.
+// If an error is returned it will be of type *martian.MultiError.
+func (v *verifier) VerifyRequests() error {
+	if v.err.Empty() {
+		return nil
+	}
+
+	return v.err
+}
+
+// ResetRequestVerifications clears all failed request verifications.
+func (v *verifier) ResetRequestVerifications() {
+	v.err = martian.NewMultiError()
+}
+
+// verifierFromJSON builds a querystring.Verifier from JSON.
+//
+// Example JSON:
+// {
+//   "querystring.Verifier": {
+//     "scope": ["request", "response"],
+//     "name": "Martian-Testing",
+//     "value": "true"
+//   }
+// }
+func verifierFromJSON(b []byte) (*parse.Result, error) {
+	msg := &verifierJSON{}
+	if err := json.Unmarshal(b, msg); err != nil {
+		return nil, err
+	}
+
+	v, err := NewVerifier(msg.Name, msg.Value)
+	if err != nil {
+		return nil, err
+	}
+
+	return parse.NewResult(v, msg.Scope)
+}