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1 // Copyright (c) 2006, Google Inc. |
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2 // All rights reserved. |
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3 // |
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4 // Redistribution and use in source and binary forms, with or without |
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5 // modification, are permitted provided that the following conditions are |
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6 // met: |
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7 // |
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8 // * Redistributions of source code must retain the above copyright |
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9 // notice, this list of conditions and the following disclaimer. |
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10 // * Redistributions in binary form must reproduce the above |
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11 // copyright notice, this list of conditions and the following disclaimer |
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12 // in the documentation and/or other materials provided with the |
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13 // distribution. |
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14 // * Neither the name of Google Inc. nor the names of its |
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15 // contributors may be used to endorse or promote products derived from |
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16 // this software without specific prior written permission. |
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17 // |
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18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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29 |
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30 // file_id.h: Return a unique identifier for a file |
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31 // |
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32 // Author: Dan Waylonis |
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33 |
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34 #ifndef COMMON_MAC_FILE_ID_H__ |
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35 #define COMMON_MAC_FILE_ID_H__ |
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36 |
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37 #include <limits.h> |
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38 #include <mach/machine.h> |
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39 |
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40 namespace google_breakpad { |
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41 |
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42 class FileID { |
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43 public: |
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44 FileID(const char *path); |
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45 ~FileID() {}; |
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46 |
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47 // Load the identifier for the file path specified in the constructor into |
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48 // |identifier|. Return false if the identifier could not be created for the |
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49 // file. |
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50 // The current implementation will return the MD5 hash of the file's bytes. |
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51 bool FileIdentifier(unsigned char identifier[16]); |
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52 |
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53 // Treat the file as a mach-o file that will contain one or more archicture. |
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54 // Accepted values for |cpu_type| and |cpu_subtype| (e.g., CPU_TYPE_X86 or |
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55 // CPU_TYPE_POWERPC) are listed in /usr/include/mach/machine.h. |
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56 // If |cpu_type| is 0, then the native cpu type is used. If |cpu_subtype| is |
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57 // CPU_SUBTYPE_MULTIPLE, the match is only done on |cpu_type|. |
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58 // Returns false if opening the file failed or if the |cpu_type|/|cpu_subtype| |
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59 // is not present in the file. |
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60 // Return the unique identifier in |identifier|. |
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61 // The current implementation will look for the (in order of priority): |
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62 // LC_UUID, LC_ID_DYLIB, or MD5 hash of the given |cpu_type|. |
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63 bool MachoIdentifier(cpu_type_t cpu_type, |
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64 cpu_subtype_t cpu_subtype, |
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65 unsigned char identifier[16]); |
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66 |
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67 // Convert the |identifier| data to a NULL terminated string. The string will |
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68 // be formatted as a UUID (e.g., 22F065BB-FC9C-49F7-80FE-26A7CEBD7BCE). |
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69 // The |buffer| should be at least 37 bytes long to receive all of the data |
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70 // and termination. Shorter buffers will contain truncated data. |
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71 static void ConvertIdentifierToString(const unsigned char identifier[16], |
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72 char *buffer, int buffer_length); |
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73 |
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74 private: |
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75 // Storage for the path specified |
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76 char path_[PATH_MAX]; |
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77 }; |
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78 |
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79 } // namespace google_breakpad |
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80 |
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81 #endif // COMMON_MAC_FILE_ID_H__ |