source4/scripting/bin/gen_ntstatus.py

   1 #!/usr/bin/env python3
   2
   3 #
   4 # Unix SMB/CIFS implementation.
   5 #
   6 # HRESULT Error definitions
   7 #
   8 # Copyright (C) Noel Power <noel.power@suse.com> 2014
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 3 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 #
  23
  24 import sys, io
  25 from gen_error_common import ErrorDef, parseErrorDescriptions
  26
  27 def generateHeaderFile(out_file, errors):
  28     out_file.write("/*\n")
  29     out_file.write(" * Descriptions for errors generated from\n")
  30     out_file.write(" * [MS-ERREF] http://msdn.microsoft.com/en-us/library/cc704588.aspx\n")
  31     out_file.write(" */\n\n")
  32     out_file.write("#ifndef _NTSTATUS_GEN_H\n")
  33     out_file.write("#define _NTSTATUS_GEN_H\n")
  34     for err in errors:
  35         line = "#define %s NT_STATUS(%#x)\n" % (err.err_define, err.err_code)
  36         out_file.write(line)
  37     out_file.write("\n#endif /* _NTSTATUS_GEN_H */\n")
  38
  39 def generateSourceFile(out_file, errors):
  40     out_file.write("/*\n")
  41     out_file.write(" * Names for errors generated from\n")
  42     out_file.write(" * [MS-ERREF] http://msdn.microsoft.com/en-us/library/cc704588.aspx\n")
  43     out_file.write(" */\n")
  44
  45     out_file.write("static const nt_err_code_struct nt_errs[] = \n")
  46     out_file.write("{\n")
  47     for err in errors:
  48         out_file.write("\t{ \"%s\", %s },\n" % (err.err_define, err.err_define))
  49     out_file.write("{ 0, NT_STATUS(0) }\n")
  50     out_file.write("};\n")
  51
  52     out_file.write("\n/*\n")
  53     out_file.write(" * Descriptions for errors generated from\n")
  54     out_file.write(" * [MS-ERREF] http://msdn.microsoft.com/en-us/library/cc704588.aspx\n")
  55     out_file.write(" */\n")
  56
  57     out_file.write("static const nt_err_code_struct nt_err_desc[] = \n")
  58     out_file.write("{\n")
  59     for err in errors:
  60         # Account for the possibility that some errors may not have descriptions
  61         if err.err_string == "":
  62             continue
  63         out_file.write("\t{ N_(\"%s\"), %s },\n"%(err.err_string, err.err_define))
  64     out_file.write("{ 0, NT_STATUS(0) }\n")
  65     out_file.write("};")
  66
  67 def generatePythonFile(out_file, errors):
  68     out_file.write("/*\n")
  69     out_file.write(" * New descriptions for existing errors generated from\n")
  70     out_file.write(" * [MS-ERREF] http://msdn.microsoft.com/en-us/library/cc704588.aspx\n")
  71     out_file.write(" */\n")
  72     out_file.write("#include \"lib/replace/system/python.h\"\n")
  73     out_file.write("#include \"python/py3compat.h\"\n")
  74     out_file.write("#include \"includes.h\"\n\n")
  75     out_file.write("static struct PyModuleDef moduledef = {\n")
  76     out_file.write("\tPyModuleDef_HEAD_INIT,\n")
  77     out_file.write("\t.m_name = \"ntstatus\",\n")
  78     out_file.write("\t.m_doc = \"NTSTATUS error defines\",\n")
  79     out_file.write("\t.m_size = -1,\n")
  80     out_file.write("};\n\n")
  81     out_file.write("MODULE_INIT_FUNC(ntstatus)\n")
  82     out_file.write("{\n")
  83     out_file.write("\tPyObject *m;\n\n")
  84     out_file.write("\tm = PyModule_Create(&moduledef);\n")
  85     out_file.write("\tif (m == NULL)\n")
  86     out_file.write("\t\treturn NULL;\n\n")
  87     for err in errors:
  88         line = """\tPyModule_AddObject(m, \"%s\",
  89                   \t\tPyLong_FromUnsignedLongLong(NT_STATUS_V(%s)));\n""" % (err.err_define, err.err_define)
  90         out_file.write(line)
  91     out_file.write("\n")
  92     out_file.write("\treturn m;\n")
  93     out_file.write("}\n")
  94
  95 def transformErrorName( error_name ):
  96     if error_name.startswith("STATUS_"):
  97         error_name = error_name.replace("STATUS_", "", 1)
  98     elif error_name.startswith("RPC_NT_"):
  99         error_name = error_name.replace("RPC_NT_", "RPC_", 1)
 100     elif error_name.startswith("EPT_NT_"):
 101         error_name = error_name.replace("EPT_NT_", "EPT_", 1)
 102     return "NT_STATUS_" + error_name
 103
 104 # Very simple script to generate files nterr_gen.c & ntstatus_gen.h.
 105 # These files contain generated definitions.
 106 # This script takes four inputs:
 107 # [1]: The name of the text file which is the content of an HTML table
 108 #      (e.g. the one found at http://msdn.microsoft.com/en-us/library/cc231200.aspx)
 109 #      copied and pasted.
 110 # [2]: The name of the output generated header file with NTStatus #defines
 111 # [3]: The name of the output generated source file with C arrays
 112 # [4]: The name of the output generated python file
 113 def main ():
 114     input_file = None
 115
 116     if len(sys.argv) == 5:
 117         input_file =  sys.argv[1]
 118         gen_headerfile_name = sys.argv[2]
 119         gen_sourcefile_name = sys.argv[3]
 120         gen_pythonfile_name = sys.argv[4]
 121     else:
 122         print("usage: %s winerrorfile headerfile sourcefile pythonfile" % (sys.argv[0]))
 123         sys.exit()
 124
 125     # read in the data
 126     with io.open(input_file, "rt", encoding='utf8') as file_contents:
 127         errors = parseErrorDescriptions(file_contents, False, transformErrorName)
 128
 129     # NT_STATUS_OK is a synonym of NT_STATUS_SUCCESS, and is very widely used
 130     # throughout Samba. It must go first in the list to ensure that to ensure
 131     # that code that previously found this error code in ‘special_errs’
 132     # maintains the same behaviour by falling back to ‘nt_errs’.
 133     ok_status = ErrorDef()
 134     ok_status.err_code = 0
 135     ok_status.err_define = 'NT_STATUS_OK'
 136     errors.insert(0, ok_status)
 137
 138     print("writing new header file: %s" % gen_headerfile_name)
 139     out_file = io.open(gen_headerfile_name, "wt", encoding='utf8')
 140     generateHeaderFile(out_file, errors)
 141     out_file.close()
 142     print("writing new source file: %s" % gen_sourcefile_name)
 143     out_file = io.open(gen_sourcefile_name, "wt", encoding='utf8')
 144     generateSourceFile(out_file, errors)
 145     out_file.close()
 146     print("writing new python file: %s" % gen_pythonfile_name)
 147     out_file = io.open(gen_pythonfile_name, "wt", encoding='utf8')
 148     generatePythonFile(out_file, errors)
 149     out_file.close()
 150
 151 if __name__ == '__main__':
 152
 153     main()