1 | package com.nailabs.abac.credential; |
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2 | |
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3 | import com.nailabs.abac.test.RtmlTest; |
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4 | |
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5 | import edu.stanford.rt.credential.CredentialDomain; |
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6 | import edu.stanford.rt.credential.CredentialStore; |
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7 | import edu.stanford.rt.credential.HashID; |
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8 | import edu.stanford.rt.credential.RTContext; |
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9 | |
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10 | import edu.stanford.rt.parser.*; |
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11 | import edu.stanford.peer.rbtm.credential.*; |
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12 | import edu.stanford.peer.rbtm.util.ResultEvidenceMap; |
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13 | |
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14 | import java.io.*; |
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15 | import java.net.*; |
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16 | import java.util.*; |
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17 | |
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18 | /** |
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19 | * A distributed discovery engine based on the RTML-aware GraphEngine. |
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20 | */ |
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21 | public class DDEngine extends RtmlEngine { |
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22 | |
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23 | protected RTParser parser; |
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24 | |
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25 | protected RTContext context; |
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26 | |
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27 | protected Properties lookupMap = new Properties(); |
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28 | |
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29 | static String PORT_PROPERTY = "com.nailabs.abac.discovery.port"; |
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30 | |
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31 | /** |
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32 | * The default constructor grabs parameters from the configuration |
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33 | * HashMap, including [Parser] and [PrepInfo] sections. |
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34 | */ |
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35 | public DDEngine(HashMap config) { |
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36 | super(); |
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37 | parser = (RTParser)config.get("DDEParser"); |
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38 | context = (RTContext)config.get("DDEContext"); |
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39 | lookupMap = (Properties)config.get("PrepInfo"); |
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40 | store = (CredentialStore)config.get("DDEStore"); |
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41 | try { |
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42 | if(context == null) { |
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43 | context = new RTContext(parser); |
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44 | } |
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45 | if(store == null) { |
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46 | store = (CredentialStore)config.get("CredentialStore"); |
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47 | } |
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48 | if(store == null) { |
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49 | store = new CredentialStore(parser); |
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50 | } |
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51 | } catch (Exception ex) { |
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52 | ex.printStackTrace(); |
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53 | } |
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54 | } |
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55 | |
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56 | protected URL createURL(String host, String operation, String expression) { |
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57 | StringBuffer buff = new StringBuffer("http://"); |
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58 | buff.append(host).append("?"); |
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59 | buff.append(operation).append("=").append(expression); |
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60 | try { |
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61 | System.out.println("Constructing url = " + buff); |
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62 | return new URL(buff.toString()); |
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63 | } |
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64 | catch(Exception ex) { |
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65 | ex.printStackTrace(); |
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66 | } |
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67 | return null; |
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68 | } |
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69 | |
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70 | |
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71 | protected Vector parseOutput(URL url) { |
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72 | Vector documents = new Vector(); |
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73 | StringWriter out = null; |
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74 | |
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75 | try { |
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76 | URLConnection connection = url.openConnection(); |
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77 | InputStream in = connection.getInputStream(); |
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78 | BufferedReader buffedReader |
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79 | = new BufferedReader(new InputStreamReader(in)); |
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80 | out = new StringWriter(); |
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81 | // grab the first line so we don't have an empty vector item |
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82 | out.write(buffedReader.readLine()); |
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83 | while(true) { |
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84 | String line = buffedReader.readLine(); |
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85 | if(line == null)break; |
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86 | if(line.startsWith("<?xml")) { |
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87 | documents.add(out.getBuffer().toString()); |
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88 | out = new StringWriter(); |
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89 | } |
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90 | out.write(line); |
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91 | out.write("\n"); |
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92 | } |
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93 | |
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94 | } catch(Exception ex) { |
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95 | //ex.printStackTrace(); |
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96 | } |
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97 | if(out != null) { |
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98 | documents.add(out.getBuffer().toString()); |
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99 | } |
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100 | for(int cnt = 0; cnt < documents.size(); cnt++) { |
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101 | try { |
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102 | String xml = (String)documents.get(cnt); |
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103 | if(xml.equals("null")) { |
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104 | documents.remove(cnt--); |
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105 | continue; |
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106 | } |
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107 | System.out.println("---------begin xml-------"); |
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108 | System.out.println(xml); |
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109 | System.out.println("----------end xml--------"); |
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110 | InputStream in = new ByteArrayInputStream(xml.getBytes()); |
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111 | documents.set |
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112 | (cnt, (Object) parser.parseCredentialDomain(in,context)); |
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113 | } catch(Exception ex) { |
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114 | ex.printStackTrace(); |
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115 | documents.remove(cnt--); |
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116 | } |
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117 | } |
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118 | return documents; |
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119 | } |
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120 | |
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121 | protected String getLocation(EntityExpression expr) { |
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122 | String base; |
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123 | |
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124 | if(expr instanceof Entity) { |
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125 | base = expr.toString(); |
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126 | } else if(expr instanceof edu.stanford.peer.rbtm.credential.Role) { |
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127 | base = |
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128 | ((edu.stanford.peer.rbtm.credential.Role)expr).getBase().toString(); |
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129 | } else if(expr instanceof edu.stanford.peer.rbtm.credential.LinkedRole) |
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130 | { |
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131 | base = ((edu.stanford.peer.rbtm.credential.LinkedRole)expr).getFirstRole().getBase().toString(); |
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132 | } else if(expr instanceof Intersection) { |
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133 | base = getLocation((EntityExpression) |
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134 | ((Intersection)expr).getParts().next()); |
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135 | } else { |
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136 | base = new String(); |
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137 | } |
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138 | System.out.println("getting url for " + base); |
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139 | return lookupMap.getProperty(base); |
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140 | } |
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141 | |
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142 | protected Vector discover(String operation, EntityExpression expr) { |
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143 | URL url = createURL(getLocation(expr), operation, |
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144 | RtmlExpression.toString(expr)); |
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145 | Vector v = parseOutput(url); |
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146 | Vector results = new Vector(v.size()); |
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147 | Iterator domains = v.iterator(); |
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148 | while(domains.hasNext()) { |
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149 | CredentialDomain domain = (CredentialDomain)domains.next(); |
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150 | HashID hash = domain.getHashID(); |
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151 | try { |
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152 | addDomain(domain); |
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153 | Iterator creds = RtmlEngine.convert(domain).iterator(); |
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154 | while(creds.hasNext()) { |
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155 | RtmlCredential cred = (RtmlCredential)creds.next(); |
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156 | results.add(cred); |
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157 | System.out.println("-----+Adding " + cred); |
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158 | } |
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159 | } catch(Exception ex) { |
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160 | System.err.println("Error with credential domain " + |
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161 | domain.getHashID()); |
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162 | ex.printStackTrace(); |
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163 | } |
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164 | } |
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165 | return results; |
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166 | } |
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167 | |
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168 | synchronized public Iterator |
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169 | findCredentialsDefiningRole(edu.stanford.peer.rbtm.credential.Role r) { |
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170 | return discover("Defines", r).iterator(); |
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171 | } |
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172 | |
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173 | synchronized public Collection getCredentialsIssuedBy(Entity e) { |
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174 | return discover("Issuer", e); |
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175 | } |
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176 | |
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177 | synchronized public Iterator findCredentialsBySubject(EntityExpression s) { |
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178 | return discover("Subject", s).iterator(); |
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179 | } |
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180 | |
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181 | public static void main(String[] args) { |
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182 | if(System.getProperty("edu.stanford.rt.SystemDomain") == null) { |
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183 | System.setProperty("edu.stanford.rt.SystemDomain", |
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184 | "../rtml/schemas/SystemSpec.xml"); |
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185 | } |
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186 | HashMap conf = new HashMap(6); |
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187 | Properties prepInfo = new Properties(); |
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188 | prepInfo.setProperty("SE", |
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189 | "wwinsbor1.rv.nailabs.com:8180/demo/se-discovery"); |
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190 | prepInfo.setProperty("SAdmir!FakeHashKeySAdmir", |
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191 | "wwinsbor1.rv.nailabs.com:8180/demo/se-discovery"); |
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192 | prepInfo.setProperty("US", |
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193 | "wwinsbor1.rv.nailabs.com:8180/demo/us-discovery"); |
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194 | prepInfo.setProperty("USEUCOM", |
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195 | "wwinsbor1.rv.nailabs.com:8180/demo/us-discovery"); |
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196 | prepInfo.setProperty("USSH!FakeHashKeyUSSH", |
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197 | "wwinsbor1.rv.nailabs.com:8180/demo/us-discovery"); |
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198 | prepInfo.setProperty("USN", |
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199 | "wwinsbor1.rv.nailabs.com:8180/demo/us-discovery"); |
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200 | prepInfo.setProperty("RADMSmith", |
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201 | "wwinsbor1.rv.nailabs.com:8180/demo/us-discovery"); |
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202 | conf.put("PrepInfo", prepInfo); |
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203 | Properties rtml = new Properties(System.getProperties()); |
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204 | if(rtml.getProperty("DDEStore") == null) { |
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205 | rtml.setProperty("DDEStore", "test/rtml/dde-client.xml"); |
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206 | } |
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207 | conf.put("RTML", rtml); |
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208 | RtmlTest.parseDiscoveryStore(conf); |
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209 | try { |
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210 | DDEngine engine = new DDEngine(conf); |
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211 | ResultEvidenceMap map = (ResultEvidenceMap) |
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212 | engine.backwardSearch(new Role("SAdmir!FakeHashKeySAdmir", |
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213 | "getsSLocs")); |
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214 | Collection v = map.resultSet(); |
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215 | for(Iterator i = v.iterator(); i.hasNext(); ) { |
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216 | System.out.println("--------------------"); |
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217 | Object result = i.next(); |
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218 | System.out.println(result.toString()); |
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219 | System.out.println(map.getResultEvidence(result).toString()); |
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220 | } |
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221 | System.out.println("--------------------"); |
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222 | map = (ResultEvidenceMap) |
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223 | engine.forwardSearch(new SimpleEntity("USSH!FakeHashKeyUSSH")); |
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224 | //engine.forwardSearch(new SimpleEntity("SAdmir!FakeHashKeySAdmir")); |
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225 | //engine.forwardSearch(new Role("US!FakeHashKeyUS","usr")); |
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226 | |
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227 | v = map.resultSet(); |
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228 | for(Iterator i = v.iterator(); i.hasNext(); ) { |
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229 | System.out.println("--------------------"); |
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230 | Object result = i.next(); |
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231 | System.out.println(result.toString()); |
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232 | System.out.println(map.getResultEvidence(result).toString()); |
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233 | } |
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234 | } catch(Exception ex) { |
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235 | ex.printStackTrace(); |
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236 | } |
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237 | } |
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238 | } |
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