1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
package io.github.jshipit;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import me.tongfei.progressbar.*;
import java.io.*;
import java.net.*;
import java.sql.Blob;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
public class DockerAPIHelper {
private String apiToken;
private final String apiRepo;
private String authURL;
private String authService;
private final String repository;
private final String image;
private final String tag;
public DockerAPIHelper(String apiRepo, String repository, String image, String tag) {
System.out.println("DockerAPIHelper constructor");
if (apiRepo.contains("registry.docker.io")) {
apiRepo = apiRepo.replace("registry", "registry-1"); // Docker is just funny like that
}
this.apiRepo = apiRepo;
this.repository = repository;
this.image = image;
this.tag = tag;
this.authURL = "https://auth.docker.io/token";
this.authService = "registry.docker.io";
try {
getAuthenticationUrl();
apiToken = generateAPIToken();
} catch (IOException | RuntimeException e) {
System.out.println("IOException | RuntimeException");
e.printStackTrace();
}
}
public void getAuthenticationUrl() throws IOException {
URL url_obj = null;
try {
url_obj = new URI("https://"+this.apiRepo+"/v2/").toURL();
System.out.println(url_obj.toString());
} catch (URISyntaxException | MalformedURLException e) {
e.printStackTrace();
}
assert url_obj != null;
HttpURLConnection con = (HttpURLConnection) url_obj.openConnection();
con.setRequestMethod("GET");
con.connect();
if (con.getResponseCode() == 401 ) {
Map<String, List<String>> headers = con.getHeaderFields();
List<String> authenticate = headers.get("Www-Authenticate");
this.authURL = authenticate.get(0).replace("Bearer realm=", "").replace("\"", "").split(",")[0];
this.authService = authenticate.get(0).replace("service=", "").replace("\"", "").split(",")[1];
} else {
this.authURL = "https://auth.docker.io/token";
this.authService = "registry.docker.io";
}
}
public String generateAPIToken() throws IOException, RuntimeException {
URL url_obj = null;
try {
url_obj = new URI(this.authURL + "?scope=repository:" + this.repository + "/" + this.image + ":pull" + "&service=" + this.authService).toURL();
System.out.println(url_obj.toString());
} catch (URISyntaxException | MalformedURLException e) {
System.out.println("URISyntaxException | MalformedURLException");
e.printStackTrace();
}
assert url_obj != null;
HttpURLConnection con = (HttpURLConnection) url_obj.openConnection();
con.setRequestMethod("GET");
con.connect();
if (con.getResponseCode() != 200) {
System.out.println("Error: " + con.getResponseCode());
throw new RuntimeException("Failed : HTTP error code : "
+ con.getResponseCode());
} else {
System.out.println("Success: " + con.getResponseCode());
StringBuilder output = new StringBuilder();
Scanner scanner = new Scanner(url_obj.openStream());
while (scanner.hasNext()) {
output.append(scanner.nextLine());
}
scanner.close();
System.out.println(output);
ObjectMapper mapper = new ObjectMapper();
JsonNode token = mapper.readTree(output.toString());
System.out.println(token.get("token").asText());
return token.get("token").asText();
}
}
public JsonNode fetchManifestJson() throws IOException, RuntimeException {
URL url_obj = null;
try {
url_obj = new URI("https://" + this.apiRepo + "/v2/" + this.repository + "/" + this.image + "/manifests/"+this.tag).toURL();
System.out.println(url_obj.toString());
} catch(URISyntaxException | MalformedURLException e) {
System.out.println("URISyntaxException | MalformedURLException");
e.printStackTrace();
}
assert url_obj != null;
HttpURLConnection con = (HttpURLConnection) url_obj.openConnection();
con.setRequestMethod("GET");
con.setRequestProperty("Authorization", "Bearer " + this.apiToken);
con.setRequestProperty("Accept", "application/vnd.docker.distribution.manifest.v2+json");
con.connect();
if (con.getResponseCode() != 200) {
System.out.println("Error: " + con.getResponseCode());
throw new RuntimeException("Failed : HTTP error code : "
+ con.getResponseCode());
} else {
System.out.println("Success: " + con.getResponseCode());
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuilder content = new StringBuilder();
while ((inputLine = in.readLine()) != null) {
content.append(inputLine);
}
in.close();
con.disconnect();
ObjectMapper mapper = new ObjectMapper();
return mapper.readTree(content.toString());
}
}
public void fetchBlob(String digest, String tmpdir) throws IOException, RuntimeException {
String url = "https://" + this.apiRepo + "/v2/" + this.repository + "/" + this.image + "/blobs/"+digest;
String[][] headers = {{"Authorization", "Bearer "+this.apiToken}, {"Accept", "application/vnd/docker.distribution.manifest.v2+json"}};
BlobDownloader downloader = new BlobDownloader(url, digest, headers, tmpdir);
downloader.start();
}
public String getApiToken() {
return apiToken;
}
public String getImage() {
return image;
}
public String getTag() {
return tag;
}
}
|
