github.com/valdemarpavesi/helm@v2.9.1+incompatible/pkg/getter/httpgetter.go (about) 1 /* 2 Copyright 2016 The Kubernetes Authors All rights reserved. 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 */ 15 16 package getter 17 18 import ( 19 "bytes" 20 "fmt" 21 "io" 22 "net/http" 23 "strings" 24 25 "k8s.io/helm/pkg/tlsutil" 26 "k8s.io/helm/pkg/urlutil" 27 "k8s.io/helm/pkg/version" 28 ) 29 30 //HttpGetter is the efault HTTP(/S) backend handler 31 // TODO: change the name to HTTPGetter in Helm 3 32 type HttpGetter struct { //nolint 33 client *http.Client 34 username string 35 password string 36 } 37 38 //SetCredentials sets the credentials for the getter 39 func (g *HttpGetter) SetCredentials(username, password string) { 40 g.username = username 41 g.password = password 42 } 43 44 //Get performs a Get from repo.Getter and returns the body. 45 func (g *HttpGetter) Get(href string) (*bytes.Buffer, error) { 46 return g.get(href) 47 } 48 49 func (g *HttpGetter) get(href string) (*bytes.Buffer, error) { 50 buf := bytes.NewBuffer(nil) 51 52 // Set a helm specific user agent so that a repo server and metrics can 53 // separate helm calls from other tools interacting with repos. 54 req, err := http.NewRequest("GET", href, nil) 55 if err != nil { 56 return buf, err 57 } 58 req.Header.Set("User-Agent", "Helm/"+strings.TrimPrefix(version.GetVersion(), "v")) 59 60 if g.username != "" && g.password != "" { 61 req.SetBasicAuth(g.username, g.password) 62 } 63 64 resp, err := g.client.Do(req) 65 if err != nil { 66 return buf, err 67 } 68 if resp.StatusCode != 200 { 69 return buf, fmt.Errorf("Failed to fetch %s : %s", href, resp.Status) 70 } 71 72 _, err = io.Copy(buf, resp.Body) 73 resp.Body.Close() 74 return buf, err 75 } 76 77 // newHTTPGetter constructs a valid http/https client as Getter 78 func newHTTPGetter(URL, CertFile, KeyFile, CAFile string) (Getter, error) { 79 return NewHTTPGetter(URL, CertFile, KeyFile, CAFile) 80 } 81 82 // NewHTTPGetter constructs a valid http/https client as HttpGetter 83 func NewHTTPGetter(URL, CertFile, KeyFile, CAFile string) (*HttpGetter, error) { 84 var client HttpGetter 85 if CertFile != "" && KeyFile != "" { 86 tlsConf, err := tlsutil.NewClientTLS(CertFile, KeyFile, CAFile) 87 if err != nil { 88 return &client, fmt.Errorf("can't create TLS config for client: %s", err.Error()) 89 } 90 tlsConf.BuildNameToCertificate() 91 92 sni, err := urlutil.ExtractHostname(URL) 93 if err != nil { 94 return &client, err 95 } 96 tlsConf.ServerName = sni 97 98 client.client = &http.Client{ 99 Transport: &http.Transport{ 100 TLSClientConfig: tlsConf, 101 Proxy: http.ProxyFromEnvironment, 102 }, 103 } 104 } else { 105 client.client = http.DefaultClient 106 } 107 return &client, nil 108 }