diff options
Diffstat (limited to 'vendor/google.golang.org/grpc/internal/metadata/metadata.go')
-rw-r--r-- | vendor/google.golang.org/grpc/internal/metadata/metadata.go | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/vendor/google.golang.org/grpc/internal/metadata/metadata.go b/vendor/google.golang.org/grpc/internal/metadata/metadata.go deleted file mode 100644 index 900bfb716..000000000 --- a/vendor/google.golang.org/grpc/internal/metadata/metadata.go +++ /dev/null @@ -1,132 +0,0 @@ -/* - * - * Copyright 2020 gRPC authors. - * - * 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 metadata contains functions to set and get metadata from addresses. -// -// This package is experimental. -package metadata - -import ( - "fmt" - "strings" - - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/resolver" -) - -type mdKeyType string - -const mdKey = mdKeyType("grpc.internal.address.metadata") - -type mdValue metadata.MD - -func (m mdValue) Equal(o any) bool { - om, ok := o.(mdValue) - if !ok { - return false - } - if len(m) != len(om) { - return false - } - for k, v := range m { - ov := om[k] - if len(ov) != len(v) { - return false - } - for i, ve := range v { - if ov[i] != ve { - return false - } - } - } - return true -} - -// Get returns the metadata of addr. -func Get(addr resolver.Address) metadata.MD { - attrs := addr.Attributes - if attrs == nil { - return nil - } - md, _ := attrs.Value(mdKey).(mdValue) - return metadata.MD(md) -} - -// Set sets (overrides) the metadata in addr. -// -// When a SubConn is created with this address, the RPCs sent on it will all -// have this metadata. -func Set(addr resolver.Address, md metadata.MD) resolver.Address { - addr.Attributes = addr.Attributes.WithValue(mdKey, mdValue(md)) - return addr -} - -// Validate validates every pair in md with ValidatePair. -func Validate(md metadata.MD) error { - for k, vals := range md { - if err := ValidatePair(k, vals...); err != nil { - return err - } - } - return nil -} - -// hasNotPrintable return true if msg contains any characters which are not in %x20-%x7E -func hasNotPrintable(msg string) bool { - // for i that saving a conversion if not using for range - for i := 0; i < len(msg); i++ { - if msg[i] < 0x20 || msg[i] > 0x7E { - return true - } - } - return false -} - -// ValidatePair validate a key-value pair with the following rules (the pseudo-header will be skipped) : -// -// - key must contain one or more characters. -// - the characters in the key must be contained in [0-9 a-z _ - .]. -// - if the key ends with a "-bin" suffix, no validation of the corresponding value is performed. -// - the characters in the every value must be printable (in [%x20-%x7E]). -func ValidatePair(key string, vals ...string) error { - // key should not be empty - if key == "" { - return fmt.Errorf("there is an empty key in the header") - } - // pseudo-header will be ignored - if key[0] == ':' { - return nil - } - // check key, for i that saving a conversion if not using for range - for i := 0; i < len(key); i++ { - r := key[i] - if !(r >= 'a' && r <= 'z') && !(r >= '0' && r <= '9') && r != '.' && r != '-' && r != '_' { - return fmt.Errorf("header key %q contains illegal characters not in [0-9a-z-_.]", key) - } - } - if strings.HasSuffix(key, "-bin") { - return nil - } - // check value - for _, val := range vals { - if hasNotPrintable(val) { - return fmt.Errorf("header key %q contains value with non-printable ASCII characters", key) - } - } - return nil -} |