├── .gitignore ├── README.md ├── pom.xml ├── src └── main │ └── java │ └── it │ └── zero11 │ └── acme │ └── example │ ├── LetsEncryptDemo.java │ ├── FTPChallengeListener.java │ └── SFTPChallengeListener.java └── LICENSE.txt /.gitignore: -------------------------------------------------------------------------------- 1 | /target/ 2 | /.settings/ 3 | /.classpath 4 | /.project 5 | *.crt 6 | *.csr 7 | *.key 8 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Java ACME Client Let's Encrypt DEMO 2 | 3 | This is a demo client using the [Java ACME Client Library](https://github.com/zero11it/acme-client). 4 | This demo ask to the Let's Encrypt CA to sign a certificate for a domain using an FTP Account to perform the domain validation. 5 | 6 | ## Contributions 7 | 8 | Contributions are welcome, but there are no guarantees that they are accepted as such. Process for contributing is the following: 9 | - Fork this project 10 | - Create an issue to this project about the contribution (bug or feature) if there is no such issue about it already. Try to keep the scope minimal. 11 | - Develop and test the fix or functionality carefully. Only include minimum amount of code needed to fix the issue. 12 | - Refer to the fixed issue in commit 13 | - Send a pull request for the original project 14 | - Comment on the original issue that you have implemented a fix for it 15 | 16 | ## License & Author 17 | 18 | Java ACME Client is distributed under Apache License 2.0. For license terms, see LICENSE.txt. 19 | 20 | Java ACME Client is written by Zero11 -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 3 | 4.0.0 4 | it.zero11 5 | acme-client-letsencrypt-demo 6 | 0.1.2 7 | 8 | Java ACME Client Let's Encrypt demo 9 | This is a demo client using the Java ACME Client Library 10 | 11 | https://github.com/zero11it/acme-client-letsencrypt-demo 12 | 13 | 14 | 15 | Apache License, Version 2.0 16 | http://www.apache.org/licenses/LICENSE-2.0.txt 17 | repo 18 | 19 | 20 | 21 | 22 | https://github.com/zero11it/acme-client-letsencrypt-demo 23 | 24 | 25 | 26 | 27 | it.zero11 28 | acme-client 29 | 0.1.2 30 | 31 | 32 | commons-net 33 | commons-net 34 | 3.3 35 | 36 | 37 | org.glassfish.jersey.core 38 | jersey-client 39 | 2.18 40 | 41 | 42 | com.jcraft 43 | jsch 44 | 0.1.50 45 | 46 | 47 | 48 | 49 | 50 | 51 | org.apache.maven.plugins 52 | maven-compiler-plugin 53 | 54 | 1.7 55 | 1.7 56 | 57 | 58 | 59 | 60 | -------------------------------------------------------------------------------- /src/main/java/it/zero11/acme/example/LetsEncryptDemo.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (C) 2015 Zero11 S.r.l. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package it.zero11.acme.example; 18 | 19 | import it.zero11.acme.Acme; 20 | import it.zero11.acme.AcmeChallengeListener; 21 | import it.zero11.acme.storage.impl.DefaultCertificateStorage; 22 | 23 | import java.io.IOException; 24 | 25 | import org.bouncycastle.operator.OperatorCreationException; 26 | import org.bouncycastle.x509.util.StreamParsingException; 27 | 28 | public class LetsEncryptDemo { 29 | private static final String CA_STAGING_URL = "https://acme-staging.api.letsencrypt.org/acme"; 30 | private static final String CA_PRODUCTION_URL = "https://acme-v01.api.letsencrypt.org/acme"; 31 | private static final String AGREEMENT_URL = "https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf"; 32 | 33 | public static void main(String args[]) throws IOException, OperatorCreationException, InterruptedException, StreamParsingException{ 34 | if (args.length != 7){ 35 | System.out.println("Usage: java -jar acme-client-letsencrypt-demo.jar <(s)ftpuser> <(s)ftppassword> <(s)ftprootfolder> "); 36 | System.out.println("Currently supported protocols are sftp and ftp"); 37 | System.out.println(String.format("The current Let's Encrypt Terms and Conditions you need to agree can be found here: %s", AGREEMENT_URL)); 38 | }else if (!args[6].startsWith("mailto:")){ 39 | System.out.println("WARNING: contact must start with mailto: "); 40 | }else{ 41 | System.out.println("WARNING: this sample application is using the Let's Encrypt staging API. Certificated created with this application won't be trusted."); 42 | System.out.println("By using this application you agree to Let's Encrypt Terms and Conditions"); 43 | System.out.println(args[5]); 44 | System.out.println("Press y if you agree to continue"); 45 | int response = System.in.read(); 46 | if (response == 'y' || response == 'Y'){ 47 | String port = "22"; 48 | if (args[0].contains(":")){ 49 | port = args[0].split(":")[1]; 50 | args[0] = args[0].split(":")[0]; 51 | } 52 | 53 | String[] domains = args[0].split(","); 54 | AcmeChallengeListener challengeListener; 55 | switch (args[1]){ 56 | case "ftp": 57 | challengeListener = new FTPChallengeListener(domains[0], args[2], args[3], args[4]); 58 | break; 59 | case "sftp": 60 | challengeListener = new SFTPChallengeListener(domains[0], Integer.parseInt(port), args[2], args[3], args[4]); 61 | break; 62 | default: 63 | System.out.println("Unknown protocol: " + args[1]); 64 | return; 65 | } 66 | 67 | Acme acme = new Acme(CA_STAGING_URL, new DefaultCertificateStorage(true), true, true); 68 | 69 | acme.getCertificate(domains, args[5], new String[]{args[6]}, challengeListener); 70 | } 71 | } 72 | } 73 | } 74 | -------------------------------------------------------------------------------- /src/main/java/it/zero11/acme/example/FTPChallengeListener.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (C) 2015 Zero11 S.r.l. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package it.zero11.acme.example; 18 | 19 | import it.zero11.acme.AcmeChallengeListener; 20 | import it.zero11.acme.AcmeException; 21 | 22 | import java.io.ByteArrayInputStream; 23 | import java.io.IOException; 24 | 25 | import org.apache.commons.net.ftp.FTPClient; 26 | import org.apache.commons.net.ftp.FTPFile; 27 | import org.apache.commons.net.ftp.FTPReply; 28 | 29 | public class FTPChallengeListener implements AcmeChallengeListener { 30 | private final String host; 31 | private final String username; 32 | private final String password; 33 | private final String webroot; 34 | 35 | public FTPChallengeListener(String host, String username, String password, String webroot) { 36 | this.host = host; 37 | this.username = username; 38 | this.password = password; 39 | this.webroot = webroot; 40 | } 41 | 42 | @Override 43 | public boolean challengeHTTP01(String domain, String token, String challengeURI, String challengeBody) { 44 | return createChallengeFiles(token, challengeBody); 45 | } 46 | 47 | private boolean createChallengeFiles(String token, String challengeBody) { 48 | boolean success = false; 49 | FTPClient ftp = new FTPClient(); 50 | try { 51 | ftp.connect(host); 52 | if(!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { 53 | ftp.disconnect(); 54 | return false; 55 | } 56 | 57 | ftp.login(username, password); 58 | ftp.changeWorkingDirectory(webroot); 59 | ftp.makeDirectory(".well-known"); 60 | ftp.changeWorkingDirectory(".well-known"); 61 | ftp.makeDirectory("acme-challenge"); 62 | ftp.changeWorkingDirectory("acme-challenge"); 63 | ftp.enterLocalPassiveMode(); 64 | ftp.setFileType(FTPClient.BINARY_FILE_TYPE, FTPClient.BINARY_FILE_TYPE); 65 | ftp.setFileTransferMode(FTPClient.BINARY_FILE_TYPE); 66 | success = ftp.storeFile(token, new ByteArrayInputStream(challengeBody.getBytes())); 67 | if (!success) 68 | System.err.println("FTP error uploading file: " + ftp.getReplyCode() + ": " + ftp.getReplyString()); 69 | ftp.logout(); 70 | } catch(IOException e) { 71 | throw new AcmeException(e); 72 | } finally { 73 | if(ftp.isConnected()) { 74 | try { 75 | ftp.disconnect(); 76 | } catch(IOException ioe) { 77 | } 78 | } 79 | } 80 | 81 | return success; 82 | } 83 | 84 | @Override 85 | public void challengeCompleted(String domain) { 86 | deleteChallengeFiles(); 87 | } 88 | 89 | private void deleteChallengeFiles() { 90 | FTPClient ftp = new FTPClient(); 91 | try { 92 | ftp.connect(host); 93 | if(!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { 94 | ftp.disconnect(); 95 | return; 96 | } 97 | 98 | ftp.login(username, password); 99 | ftp.changeWorkingDirectory(webroot); 100 | ftp.changeWorkingDirectory(".well-known"); 101 | ftp.changeWorkingDirectory("acme-challenge"); 102 | 103 | FTPFile[] subFiles = ftp.listFiles(); 104 | 105 | if (subFiles != null && subFiles.length > 0) { 106 | for (FTPFile aFile : subFiles) { 107 | String currentFileName = aFile.getName(); 108 | if (currentFileName.equals(".") || currentFileName.equals("..")) { 109 | continue; 110 | }else{ 111 | ftp.deleteFile(currentFileName); 112 | } 113 | } 114 | } 115 | ftp.changeToParentDirectory(); 116 | ftp.removeDirectory("acme-challenge"); 117 | ftp.changeToParentDirectory(); 118 | ftp.removeDirectory(".well-known"); 119 | ftp.logout(); 120 | } catch(IOException e) { 121 | throw new AcmeException(e); 122 | } finally { 123 | if(ftp.isConnected()) { 124 | try { 125 | ftp.disconnect(); 126 | } catch(IOException ioe) { 127 | } 128 | } 129 | } 130 | } 131 | 132 | @Override 133 | public void challengeFailed(String domain) { 134 | deleteChallengeFiles(); 135 | } 136 | } 137 | -------------------------------------------------------------------------------- /src/main/java/it/zero11/acme/example/SFTPChallengeListener.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (C) 2015 Zero11 S.r.l. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package it.zero11.acme.example; 18 | 19 | import it.zero11.acme.AcmeChallengeListener; 20 | import it.zero11.acme.AcmeException; 21 | 22 | import java.io.ByteArrayInputStream; 23 | import java.io.IOException; 24 | import java.util.Vector; 25 | 26 | import org.bouncycastle.operator.OperatorCreationException; 27 | import org.bouncycastle.x509.util.StreamParsingException; 28 | 29 | import com.jcraft.jsch.Channel; 30 | import com.jcraft.jsch.ChannelSftp; 31 | import com.jcraft.jsch.ChannelSftp.LsEntry; 32 | import com.jcraft.jsch.JSch; 33 | import com.jcraft.jsch.JSchException; 34 | import com.jcraft.jsch.Session; 35 | import com.jcraft.jsch.SftpException; 36 | 37 | public class SFTPChallengeListener implements AcmeChallengeListener { 38 | private final String host; 39 | private final int port; 40 | private final String username; 41 | private final String password; 42 | private final String webroot; 43 | 44 | public SFTPChallengeListener(String host, int port, String username, String password, String webroot) { 45 | this.host = host; 46 | this.port = port; 47 | this.username = username; 48 | this.password = password; 49 | this.webroot = webroot; 50 | } 51 | 52 | @Override 53 | public boolean challengeHTTP01(String domain, String token, String challengeURI, String challengeBody) { 54 | return createChallengeFiles(token, challengeBody); 55 | } 56 | 57 | private boolean createChallengeFiles(String token, String challengeBody) { 58 | boolean success = false; 59 | JSch jsch = new JSch(); 60 | Session session = null; 61 | try { 62 | session = jsch.getSession(username, host, port); 63 | session.setPassword(password); 64 | java.util.Properties config = new java.util.Properties(); 65 | config.put("StrictHostKeyChecking", "no"); 66 | session.setConfig(config); 67 | session.connect(); 68 | Channel channel = session.openChannel("sftp"); 69 | channel.connect(); 70 | ChannelSftp channelSftp = (ChannelSftp) channel; 71 | channelSftp.cd(webroot); 72 | 73 | try{ 74 | channelSftp.mkdir(".well-known"); 75 | }catch(Exception e){} 76 | channelSftp.cd(".well-known"); 77 | 78 | try{ 79 | channelSftp.mkdir("acme-challenge"); 80 | }catch(Exception e){} 81 | channelSftp.cd("acme-challenge"); 82 | 83 | channelSftp.put(new ByteArrayInputStream(challengeBody.getBytes()), token, ChannelSftp.OVERWRITE); 84 | 85 | channelSftp.disconnect(); 86 | session.disconnect(); 87 | 88 | success = true; 89 | } catch (SftpException e) { 90 | return false; 91 | } catch (JSchException e) { 92 | throw new AcmeException(e); 93 | } finally { 94 | if(session != null && session.isConnected()) { 95 | session.disconnect(); 96 | } 97 | } 98 | 99 | return success; 100 | } 101 | 102 | @Override 103 | public void challengeCompleted(String domain) { 104 | deleteChallengeFiles(); 105 | } 106 | 107 | private void deleteChallengeFiles() { 108 | JSch jsch = new JSch(); 109 | Session session = null; 110 | try { 111 | session = jsch.getSession(username, host, port); 112 | session.setPassword(password); 113 | java.util.Properties config = new java.util.Properties(); 114 | config.put("StrictHostKeyChecking", "no"); 115 | session.setConfig(config); 116 | session.connect(); 117 | Channel channel = session.openChannel("sftp"); 118 | channel.connect(); 119 | ChannelSftp channelSftp = (ChannelSftp) channel; 120 | channelSftp.cd(webroot); 121 | 122 | channelSftp.cd(".well-known"); 123 | channelSftp.cd("acme-challenge"); 124 | 125 | Vector subFiles = channelSftp.ls("."); 126 | 127 | if (subFiles != null && subFiles.size() > 0) { 128 | for (LsEntry aFile : subFiles) { 129 | String currentFileName = aFile.getFilename(); 130 | if (currentFileName.equals(".") || currentFileName.equals("..")) { 131 | continue; 132 | }else{ 133 | channelSftp.rm(currentFileName); 134 | } 135 | } 136 | } 137 | channelSftp.cd(".."); 138 | channelSftp.rmdir("acme-challenge"); 139 | channelSftp.cd(".."); 140 | channelSftp.rmdir(".well-known"); 141 | 142 | channelSftp.disconnect(); 143 | session.disconnect(); 144 | } catch (SftpException e) { 145 | //throw new AcmeException(e); 146 | } catch (JSchException e) { 147 | //throw new AcmeException(e); 148 | } finally { 149 | if(session != null && session.isConnected()) { 150 | session.disconnect(); 151 | } 152 | } 153 | } 154 | 155 | @Override 156 | public void challengeFailed(String domain) { 157 | deleteChallengeFiles(); 158 | } 159 | } 160 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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