diff options
| -rw-r--r-- | src/common/mac/macho_id.cc | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/src/common/mac/macho_id.cc b/src/common/mac/macho_id.cc index 5fc8bbf8..9605166e 100644 --- a/src/common/mac/macho_id.cc +++ b/src/common/mac/macho_id.cc @@ -170,12 +170,19 @@ bool MachoID::IDCommand(int cpu_type, unsigned char identifier[16]) { // If we found the command, we'll have initialized the dylib_command // structure if (dylib_cmd.cmd == LC_ID_DYLIB) { - // Take the timestamp, version, and compatability version bytes to form - // the first 12 bytes, pad the rest with zeros - identifier[0] = (dylib_cmd.dylib.timestamp >> 24) & 0xFF; - identifier[1] = (dylib_cmd.dylib.timestamp >> 16) & 0xFF; - identifier[2] = (dylib_cmd.dylib.timestamp >> 8) & 0xFF; - identifier[3] = dylib_cmd.dylib.timestamp & 0xFF; + // Take the hashed filename, version, and compatability version bytes + // to form the first 12 bytes, pad the rest with zeros + + // create a crude hash of the filename to generate the first 4 bytes + identifier[0] = 0; + identifier[1] = 0; + identifier[2] = 0; + identifier[3] = 0; + + for (int j = 0, i = strlen(path_)-1; i >= 0 && path_[i]!='/'; ++j, --i) { + identifier[j%4] += path_[i]; + } + identifier[4] = (dylib_cmd.dylib.current_version >> 24) & 0xFF; identifier[5] = (dylib_cmd.dylib.current_version >> 16) & 0xFF; identifier[6] = (dylib_cmd.dylib.current_version >> 8) & 0xFF; |