1 <!doctype html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2 <html> 3 <head> 4 <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> 5 <meta http-equiv="content-style-type" content="text/css"> 6 <link rel="stylesheet" type="text/css" href="../style.css"> 7 <title>ReTrace Examples</title> 8 </head> 9 <body> 10 11 <script type="text/javascript" language="JavaScript"> 12 <!-- 13 if (window.self==window.top) 14 document.write('<a class="largebutton" target="_top" href="../../index.html#manual/retrace/examples.html">ProGuard index</a> <a class="largebutton" target="_top" href="http://www.saikoa.com/dexguard">DexGuard</a> <a class="largebutton" target="_top" href="http://www.saikoa.com/">Saikoa</a> <a class="largebutton" target="other" href="http://sourceforge.net/projects/proguard/">Sourceforge</a>') 15 //--> 16 </script> 17 <noscript> 18 <a class="largebutton" target="_top" href="../../index.html#manual/retrace/examples.html">ProGuard index</a> 19 <a class="largebutton" target="_top" href="http://www.saikoa.com/dexguard">DexGuard</a> 20 <a class="largebutton" target="_top" href="http://www.saikoa.com/">Saikoa</a> 21 <a class="largebutton" target="other" href="http://sourceforge.net/projects/proguard/">Sourceforge</a> 22 </noscript> 23 24 <h2>Examples</h2> 25 26 Some typical example uses: 27 <ol> 28 <li><a href="#with">Restoring a stack trace with line numbers</a></li> 29 <li><a href="#withverbose">Restoring a stack trace with line numbers 30 (verbose)</a></li> 31 <li><a href="#without">Restoring a stack trace without line numbers</a></li> 32 </ol> 33 34 <h3><a name="with">Restoring a stack trace with line numbers</a></h3> 35 36 Assume for instance ProGuard itself has been obfuscated using the following 37 extra options: 38 <pre> 39 -printmapping proguard.map 40 41 -renamesourcefileattribute ProGuard 42 -keepattributes SourceFile,LineNumberTable 43 </pre> 44 <p> 45 46 Now assume the processed application throws an exception, and we have saved the 47 stack trace in <code>proguard.trace</code>, shown below. Of course, in real 48 life ProGuard rarely throws exceptions, so this is a purposely generated 49 exception. :) 50 51 <pre> 52 Exception in thread "main" java.lang.Error: Random exception 53 at pro.bY.a(ProGuard:576) 54 at pro.bO.a(ProGuard:431) 55 at pro.bj.a(ProGuard:145) 56 at pro.bY.a(ProGuard:522) 57 at pro.bj.a(ProGuard:129) 58 at pro.bN.a(ProGuard:125) 59 at pro.bY.a(ProGuard:251) 60 at pro.bY.a(ProGuard:229) 61 at pro.l.a(ProGuard:55) 62 at pro.bo.b(ProGuard:405) 63 at pro.ci.a(ProGuard:51) 64 at pro.bo.a(ProGuard:356) 65 at pro.be.a(ProGuard:109) 66 at pro.bo.a(ProGuard:356) 67 at pro.be.a(ProGuard:186) 68 at pro.bg.a(ProGuard:369) 69 at pro.bY.a(ProGuard:286) 70 at pro.bh.a(ProGuard:55) 71 at pro.bg.b(ProGuard:408) 72 at pro.bY.a(ProGuard:190) 73 at pro.bg.a(ProGuard:369) 74 at pro.M.a(ProGuard:110) 75 at pro.bY.a(ProGuard:449) 76 at pro.M.a(ProGuard:99) 77 at pro.bo.a(ProGuard:372) 78 at pro.bY.a(ProGuard:649) 79 at pro.bY.a(ProGuard:112) 80 at pro.P.a(ProGuard:66) 81 at pro.p.a(ProGuard:83) 82 at pro.bU.a(ProGuard:69) 83 at pro.bo.a(ProGuard:356) 84 at pro.J.a(ProGuard:149) 85 at pro.I.a(ProGuard:49) 86 at pro.J.a(ProGuard:105) 87 at pro.cf.c(ProGuard:370) 88 at pro.cf.a(ProGuard:317) 89 at pro.bc.a(ProGuard:55) 90 at proguard.ProGuard.a(ProGuard:363) 91 at proguard.ProGuard.c(ProGuard:187) 92 at proguard.ProGuard.b(ProGuard:385) 93 at proguard.ProGuard.main(ProGuard:429) 94 </pre> 95 <p> 96 97 We can then use the following command to recover the stack trace: 98 <pre> 99 <b>java -jar retrace.jar proguard.map proguard.trace</b> 100 </pre> 101 <p> 102 103 The output will look as follows: 104 <pre> 105 Exception in thread "main" java.lang.Error: Random exception 106 at proguard.shrink.UsageMarker.visitInstruction(ProGuard:576) 107 at proguard.classfile.instruction.GenericInstruction.accept(ProGuard:431) 108 at proguard.classfile.CodeAttrInfo.instructionsAccept(ProGuard:145) 109 at proguard.shrink.UsageMarker.visitCodeAttrInfo(ProGuard:522) 110 at proguard.classfile.CodeAttrInfo.accept(ProGuard:129) 111 at proguard.classfile.ProgramMemberInfo.attributesAccept(ProGuard:125) 112 at proguard.shrink.UsageMarker.visitMemberInfo(ProGuard:251) 113 at proguard.shrink.UsageMarker.visitProgramMethodInfo(ProGuard:229) 114 at proguard.classfile.ProgramMethodInfo.accept(ProGuard:55) 115 at proguard.classfile.ProgramClassFile.methodAccept(ProGuard:405) 116 at proguard.classfile.visitor.NamedMethodVisitor.visitProgramClassFile(ProGuard:51) 117 at proguard.classfile.ProgramClassFile.accept(ProGuard:356) 118 at proguard.classfile.visitor.ClassFileUpDownTraveler.visitProgramClassFile(ProGuard:109) 119 at proguard.classfile.ProgramClassFile.accept(ProGuard:356) 120 at proguard.classfile.visitor.ClassFileUpDownTraveler.visitLibraryClassFile(ProGuard:186) 121 at proguard.classfile.LibraryClassFile.accept(ProGuard:369) 122 at proguard.shrink.UsageMarker.visitLibraryMethodInfo(ProGuard:286) 123 at proguard.classfile.LibraryMethodInfo.accept(ProGuard:55) 124 at proguard.classfile.LibraryClassFile.methodsAccept(ProGuard:408) 125 at proguard.shrink.UsageMarker.visitLibraryClassFile(ProGuard:190) 126 at proguard.classfile.LibraryClassFile.accept(ProGuard:369) 127 at proguard.classfile.ClassCpInfo.referencedClassAccept(ProGuard:110) 128 at proguard.shrink.UsageMarker.visitClassCpInfo(ProGuard:449) 129 at proguard.classfile.ClassCpInfo.accept(ProGuard:99) 130 at proguard.classfile.ProgramClassFile.constantPoolEntryAccept(ProGuard:372) 131 at proguard.shrink.UsageMarker.markCpEntry(ProGuard:649) 132 at proguard.shrink.UsageMarker.visitProgramClassFile(ProGuard:112) 133 at proguard.classfile.visitor.VariableClassFileVisitor.visitProgramClassFile(ProGuard:66) 134 at proguard.classfile.visitor.MultiClassFileVisitor.visitProgramClassFile(ProGuard:83) 135 at proguard.classfile.visitor.FilteredClassFileVisitor.visitProgramClassFile(ProGuard:69) 136 at proguard.classfile.ProgramClassFile.accept(ProGuard:356) 137 at proguard.classfile.ClassPool.classFileAccept(ProGuard:149) 138 at proguard.classfile.visitor.NamedClassFileVisitor.visitClassPool(ProGuard:49) 139 at proguard.classfile.ClassPool.accept(ProGuard:105) 140 at proguard.KeepCommand.executeShrinkingPhase(ProGuard:370) 141 at proguard.KeepCommand.execute(ProGuard:317) 142 at proguard.CompoundCommand.execute(ProGuard:55) 143 at proguard.ProGuard.executeCommands(ProGuard:363) 144 at proguard.ProGuard.shrink(ProGuard:187) 145 at proguard.ProGuard.execute(ProGuard:385) 146 at proguard.ProGuard.main(ProGuard:429) 147 </pre> 148 149 <h3><a name="withverbose">Restoring a stack trace with line numbers (verbose)</a></h3> 150 151 In the previous example, we could also use the verbose flag: 152 <pre> 153 <b>java -jar retrace.jar -verbose proguard.map proguard.trace</b> 154 </pre> 155 <p> 156 157 The output will then look as follows: 158 <pre> 159 Exception in thread "main" java.lang.Error: Random exception 160 at proguard.shrink.UsageMarker.void visitInstruction(proguard.classfile.ClassFile,proguard.classfile.instruction.Instruction)(ProGuard:576) 161 at proguard.classfile.instruction.GenericInstruction.void accept(proguard.classfile.ClassFile,proguard.classfile.instruction.InstructionVisitor)(ProGuard:431) 162 at proguard.classfile.CodeAttrInfo.void instructionsAccept(proguard.classfile.ClassFile,proguard.classfile.instruction.InstructionVisitor)(ProGuard:145) 163 at proguard.shrink.UsageMarker.void visitCodeAttrInfo(proguard.classfile.ClassFile,proguard.classfile.CodeAttrInfo)(ProGuard:522) 164 at proguard.classfile.CodeAttrInfo.void accept(proguard.classfile.ClassFile,proguard.classfile.visitor.AttrInfoVisitor)(ProGuard:129) 165 at proguard.classfile.ProgramMemberInfo.void attributesAccept(proguard.classfile.ProgramClassFile,proguard.classfile.visitor.AttrInfoVisitor)(ProGuard:125) 166 at proguard.shrink.UsageMarker.void visitMemberInfo(proguard.classfile.ProgramClassFile,proguard.classfile.ProgramMemberInfo)(ProGuard:251) 167 at proguard.shrink.UsageMarker.void visitProgramMethodInfo(proguard.classfile.ProgramClassFile,proguard.classfile.ProgramMethodInfo)(ProGuard:229) 168 at proguard.classfile.ProgramMethodInfo.void accept(proguard.classfile.ProgramClassFile,proguard.classfile.visitor.MemberInfoVisitor)(ProGuard:55) 169 at proguard.classfile.ProgramClassFile.void methodAccept(proguard.classfile.visitor.MemberInfoVisitor,java.lang.String,java.lang.String)(ProGuard:405) 170 at proguard.classfile.visitor.NamedMethodVisitor.void visitProgramClassFile(proguard.classfile.ProgramClassFile)(ProGuard:51) 171 at proguard.classfile.ProgramClassFile.void accept(proguard.classfile.visitor.ClassFileVisitor)(ProGuard:356) 172 at proguard.classfile.visitor.ClassFileUpDownTraveler.void visitProgramClassFile(proguard.classfile.ProgramClassFile)(ProGuard:109) 173 at proguard.classfile.ProgramClassFile.void accept(proguard.classfile.visitor.ClassFileVisitor)(ProGuard:356) 174 at proguard.classfile.visitor.ClassFileUpDownTraveler.void visitLibraryClassFile(proguard.classfile.LibraryClassFile)(ProGuard:186) 175 at proguard.classfile.LibraryClassFile.void accept(proguard.classfile.visitor.ClassFileVisitor)(ProGuard:369) 176 at proguard.shrink.UsageMarker.void visitLibraryMethodInfo(proguard.classfile.LibraryClassFile,proguard.classfile.LibraryMethodInfo)(ProGuard:286) 177 at proguard.classfile.LibraryMethodInfo.void accept(proguard.classfile.LibraryClassFile,proguard.classfile.visitor.MemberInfoVisitor)(ProGuard:55) 178 at proguard.classfile.LibraryClassFile.void methodsAccept(proguard.classfile.visitor.MemberInfoVisitor)(ProGuard:408) 179 at proguard.shrink.UsageMarker.void visitLibraryClassFile(proguard.classfile.LibraryClassFile)(ProGuard:190) 180 at proguard.classfile.LibraryClassFile.void accept(proguard.classfile.visitor.ClassFileVisitor)(ProGuard:369) 181 at proguard.classfile.ClassCpInfo.void referencedClassAccept(proguard.classfile.visitor.ClassFileVisitor)(ProGuard:110) 182 at proguard.shrink.UsageMarker.void visitClassCpInfo(proguard.classfile.ClassFile,proguard.classfile.ClassCpInfo)(ProGuard:449) 183 at proguard.classfile.ClassCpInfo.void accept(proguard.classfile.ClassFile,proguard.classfile.visitor.CpInfoVisitor)(ProGuard:99) 184 at proguard.classfile.ProgramClassFile.void constantPoolEntryAccept(proguard.classfile.visitor.CpInfoVisitor,int)(ProGuard:372) 185 at proguard.shrink.UsageMarker.void markCpEntry(proguard.classfile.ClassFile,int)(ProGuard:649) 186 at proguard.shrink.UsageMarker.void visitProgramClassFile(proguard.classfile.ProgramClassFile)(ProGuard:112) 187 at proguard.classfile.visitor.VariableClassFileVisitor.void visitProgramClassFile(proguard.classfile.ProgramClassFile)(ProGuard:66) 188 at proguard.classfile.visitor.MultiClassFileVisitor.void visitProgramClassFile(proguard.classfile.ProgramClassFile)(ProGuard:83) 189 at proguard.classfile.visitor.FilteredClassFileVisitor.void visitProgramClassFile(proguard.classfile.ProgramClassFile)(ProGuard:69) 190 at proguard.classfile.ProgramClassFile.void accept(proguard.classfile.visitor.ClassFileVisitor)(ProGuard:356) 191 at proguard.classfile.ClassPool.void classFileAccept(proguard.classfile.visitor.ClassFileVisitor,java.lang.String)(ProGuard:149) 192 at proguard.classfile.visitor.NamedClassFileVisitor.void visitClassPool(proguard.classfile.ClassPool)(ProGuard:49) 193 at proguard.classfile.ClassPool.void accept(proguard.classfile.visitor.ClassPoolVisitor)(ProGuard:105) 194 at proguard.KeepCommand.void executeShrinkingPhase(proguard.classfile.ClassPool,proguard.classfile.ClassPool)(ProGuard:370) 195 at proguard.KeepCommand.void execute(int,proguard.classfile.ClassPool,proguard.classfile.ClassPool)(ProGuard:317) 196 at proguard.CompoundCommand.void execute(int,proguard.classfile.ClassPool,proguard.classfile.ClassPool)(ProGuard:55) 197 at proguard.ProGuard.void executeCommands(int)(ProGuard:363) 198 at proguard.ProGuard.void shrink()(ProGuard:187) 199 at proguard.ProGuard.void execute(java.lang.String[])(ProGuard:385) 200 at proguard.ProGuard.void main(java.lang.String[])(ProGuard:429) 201 </pre> 202 203 204 <h3><a name="without">Restoring a stack trace without line numbers</a></h3> 205 206 Assume for instance ProGuard itself has been obfuscated using the following 207 extra options, this time without preserving the line number tables: 208 <pre> 209 -printmapping proguard.map 210 </pre> 211 <p> 212 213 A stack trace <code>proguard.trace</code> will then lack line number 214 information: 215 <pre> 216 Exception in thread "main" java.lang.Error: Random exception 217 at pro.bY.a(Unknown Source) 218 at pro.bO.a(Unknown Source) 219 at pro.bj.a(Unknown Source) 220 at pro.bY.a(Unknown Source) 221 at pro.bj.a(Unknown Source) 222 at pro.bN.a(Unknown Source) 223 at pro.bY.a(Unknown Source) 224 at pro.bY.a(Unknown Source) 225 at pro.l.a(Unknown Source) 226 at pro.bo.b(Unknown Source) 227 at pro.ci.a(Unknown Source) 228 at pro.bo.a(Unknown Source) 229 at pro.be.a(Unknown Source) 230 at pro.bo.a(Unknown Source) 231 at pro.be.a(Unknown Source) 232 at pro.bg.a(Unknown Source) 233 at pro.bY.a(Unknown Source) 234 at pro.bh.a(Unknown Source) 235 at pro.bg.b(Unknown Source) 236 at pro.bY.a(Unknown Source) 237 at pro.bg.a(Unknown Source) 238 at pro.M.a(Unknown Source) 239 at pro.bY.a(Unknown Source) 240 at pro.M.a(Unknown Source) 241 at pro.bo.a(Unknown Source) 242 at pro.bY.a(Unknown Source) 243 at pro.bY.a(Unknown Source) 244 at pro.P.a(Unknown Source) 245 at pro.p.a(Unknown Source) 246 at pro.bU.a(Unknown Source) 247 at pro.bo.a(Unknown Source) 248 at pro.J.a(Unknown Source) 249 at pro.I.a(Unknown Source) 250 at pro.J.a(Unknown Source) 251 at pro.cf.c(Unknown Source) 252 at pro.cf.a(Unknown Source) 253 at pro.bc.a(Unknown Source) 254 at proguard.ProGuard.a(Unknown Source) 255 at proguard.ProGuard.c(Unknown Source) 256 at proguard.ProGuard.b(Unknown Source) 257 at proguard.ProGuard.main(Unknown Source) 258 </pre> 259 <p> 260 261 We can still use the same command to recover the stack trace: 262 <pre> 263 <b>java -jar retrace.jar proguard.map proguard.trace</b> 264 </pre> 265 <p> 266 267 The output will now give a list of alternative original method names for each 268 ambiguous obfuscated method name: 269 <pre> 270 Exception in thread "main" java.lang.Error: Random exception 271 at proguard.shrink.UsageMarker.visitProgramClassFile(Unknown Source) 272 visitLibraryClassFile 273 visitProgramFieldInfo 274 visitProgramMethodInfo 275 visitMemberInfo 276 visitLibraryFieldInfo 277 visitLibraryMethodInfo 278 visitIntegerCpInfo 279 visitLongCpInfo 280 visitFloatCpInfo 281 visitDoubleCpInfo 282 visitStringCpInfo 283 visitUtf8CpInfo 284 visitFieldrefCpInfo 285 visitInterfaceMethodrefCpInfo 286 visitMethodrefCpInfo 287 visitClassCpInfo 288 visitNameAndTypeCpInfo 289 visitUnknownAttrInfo 290 visitInnerClassesAttrInfo 291 visitConstantValueAttrInfo 292 visitExceptionsAttrInfo 293 visitCodeAttrInfo 294 visitLineNumberTableAttrInfo 295 visitLocalVariableTableAttrInfo 296 visitSourceFileAttrInfo 297 visitDeprecatedAttrInfo 298 visitSyntheticAttrInfo 299 visitInstruction 300 visitCpInstruction 301 visitExceptionInfo 302 visitInnerClassesInfo 303 visitLocalVariableInfo 304 markCpEntry 305 markAsUnused 306 isUsed 307 at proguard.classfile.instruction.GenericInstruction.create(Unknown Source) 308 isWide 309 getLength 310 accept 311 at proguard.classfile.CodeAttrInfo.getAttribute(Unknown Source) 312 getAttrInfoLength 313 readInfo 314 accept 315 instructionsAccept 316 exceptionsAccept 317 [...] 318 at proguard.KeepCommand.executeShrinkingPhase(Unknown Source) 319 access$100 320 at proguard.KeepCommand.keepField(Unknown Source) 321 ensureMultiClassFileVisitorForMembers 322 execute 323 executeObfuscationPhase 324 access$002 325 access$000 326 access$102 327 access$108 328 at proguard.CompoundCommand.addCommand(Unknown Source) 329 execute 330 at proguard.ProGuard.readCommands(Unknown Source) 331 obfuscate 332 executeCommands 333 at proguard.ProGuard.shrink(Unknown Source) 334 at proguard.ProGuard.check(Unknown Source) 335 execute 336 at proguard.ProGuard.main(Unknown Source) 337 </pre> 338 339 <hr /> 340 <address> 341 Copyright © 2002-2014 342 <a target="other" href="http://www.lafortune.eu/">Eric Lafortune</a> @ <a target="top" href="http://www.saikoa.com/">Saikoa</a>. 343 </address> 344 </body> 345 </html> 346 347
