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#!/usr/bin/env python3
#
# Unix SMB/CIFS implementation.
#
# HRESULT Error definitions
#
# Copyright (C) Noel Power <noel.power@suse.com> 2014
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import sys, os.path, io, string
# parsed error data
Errors = []
# error data model
class ErrorDef:
def __init__(self):
self.err_code = ""
self.err_define = None
self.err_string = ""
self.isWinError = False
self.linenum = ""
def escapeString( input ):
output = input.replace('"','\\"')
output = output.replace("\\<","\\\\<")
output = output.replace('\t',"")
return output
def parseErrorDescriptions( input_file, isWinError ):
# read in the data
fileContents = open(input_file,"r")
count = 0;
for line in fileContents:
content = line.strip().split(None,1)
# start new error definition ?
if len(content) == 0:
continue
if line.startswith("0x"):
newError = ErrorDef()
newError.err_code = content[0]
# escape the usual suspects
if len(content) > 1:
newError.err_string = escapeString(content[1])
newError.linenum = count
newError.isWinError = isWinError
Errors.append(newError)
else:
if len(Errors) == 0:
print("Error parsing file as line %d"%count)
sys.exit()
err = Errors[-1]
if err.err_define is None:
err.err_define = "HRES_" + content[0]
else:
if len(content) > 0:
desc = escapeString(line.strip())
if len(desc):
if err.err_string == "":
err.err_string = desc
else:
err.err_string = err.err_string + " " + desc
count = count + 1
fileContents.close()
print("parsed %d lines generated %d error definitions"%(count,len(Errors)))
def write_license(out_file):
out_file.write("/*\n")
out_file.write(" * Unix SMB/CIFS implementation.\n")
out_file.write(" *\n")
out_file.write(" * HRESULT Error definitions\n")
out_file.write(" *\n")
out_file.write(" * Copyright (C) Noel Power <noel.power@suse.com> 2014\n")
out_file.write(" *\n")
out_file.write(" * This program is free software; you can redistribute it and/or modify\n")
out_file.write(" * it under the terms of the GNU General Public License as published by\n")
out_file.write(" * the Free Software Foundation; either version 3 of the License, or\n")
out_file.write(" * (at your option) any later version.\n")
out_file.write(" *\n")
out_file.write(" * This program is distributed in the hope that it will be useful,\n")
out_file.write(" * but WITHOUT ANY WARRANTY; without even the implied warranty of\n")
out_file.write(" * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n")
out_file.write(" * GNU General Public License for more details.\n")
out_file.write(" *\n")
out_file.write(" * You should have received a copy of the GNU General Public License\n")
out_file.write(" * along with this program. If not, see <http://www.gnu.org/licenses/>.\n")
out_file.write(" */\n")
out_file.write("\n")
def generateHeaderFile(out_file):
write_license(out_file)
out_file.write("#ifndef _HRESULT_H_\n")
out_file.write("#define _HRESULT_H_\n\n")
macro_magic = "#if defined(HAVE_IMMEDIATE_STRUCTURES)\n"
macro_magic += "typedef struct {uint32_t h;} HRESULT;\n"
macro_magic += "#define HRES_ERROR(x) ((HRESULT) { x })\n"
macro_magic += "#define HRES_ERROR_V(x) ((x).h)\n"
macro_magic += "#else\n"
macro_magic += "typedef uint32_t HRESULT;\n"
macro_magic += "#define HRES_ERROR(x) (x)\n"
macro_magic += "#define HRES_ERROR_V(x) (x)\n"
macro_magic += "#endif\n"
macro_magic += "\n"
macro_magic += "#define HRES_IS_OK(x) (HRES_ERROR_V(x) == 0)\n"
macro_magic += "#define HRES_IS_EQUAL(x,y) (HRES_ERROR_V(x) == HRES_ERROR_V(y))\n"
out_file.write(macro_magic)
out_file.write("\n\n")
out_file.write("/*\n")
out_file.write(" * The following error codes are autogenerated from [MS-ERREF]\n")
out_file.write(" * see http://msdn.microsoft.com/en-us/library/cc704587.aspx\n")
out_file.write(" */\n")
out_file.write("\n")
for err in Errors:
line = "#define {0:49} HRES_ERROR({1})\n".format(err.err_define ,err.err_code)
out_file.write(line)
out_file.write("\nconst char *hresult_errstr_const(HRESULT err_code);\n")
out_file.write("\nconst char *hresult_errstr(HRESULT err_code);\n")
out_file.write("\n#define FACILITY_WIN32 0x0007\n")
out_file.write("#define WIN32_FROM_HRESULT(x) (HRES_ERROR_V(x) == 0 ? HRES_ERROR_V(x) : ~((FACILITY_WIN32 << 16) | 0x80000000) & HRES_ERROR_V(x))\n")
out_file.write("#define HRESULT_IS_LIKELY_WERR(x) ((HRES_ERROR_V(x) & 0xFFFF0000) == 0x80070000)\n")
out_file.write("#define HRESULT_FROM_WERROR(x) (HRES_ERROR(0x80070000 | W_ERROR_V(x)))\n")
out_file.write("\n\n\n#endif /*_HRESULT_H_*/")
def generateSourceFile(out_file):
write_license(out_file)
out_file.write("#include \"includes.h\"\n")
out_file.write("#include \"hresult.h\"\n")
out_file.write("/*\n")
out_file.write(" * The following error codes and descriptions are autogenerated from [MS-ERREF]\n")
out_file.write(" * see http://msdn.microsoft.com/en-us/library/cc704587.aspx\n")
out_file.write(" */\n")
out_file.write("\n")
out_file.write("static const struct {\n")
out_file.write(" HRESULT error_code;\n")
out_file.write(" const char *error_str;\n")
out_file.write(" const char *error_message;\n")
out_file.write("} hresult_errs[] = {\n")
for err in Errors:
out_file.write(" {\n")
if err.isWinError:
out_file.write(" HRESULT_FROM_WIN32(%s),\n"%err.err_define)
out_file.write(" \"HRESULT_FROM_WIN32(%s)\",\n"%err.err_define)
else:
out_file.write(" %s,\n"%err.err_define)
out_file.write(" \"%s\",\n"%err.err_define)
out_file.write(" \"%s\"\n"%err.err_string)
out_file.write(" },\n")
out_file.write("};\n")
out_file.write("\n")
out_file.write("const char *hresult_errstr_const(HRESULT err_code)\n")
out_file.write("{\n");
out_file.write(" const char *result = NULL;\n")
out_file.write(" int i;\n")
out_file.write(" for (i = 0; i < ARRAY_SIZE(hresult_errs); ++i) {\n")
out_file.write(" if (HRES_IS_EQUAL(err_code, hresult_errs[i].error_code)) {\n")
out_file.write(" result = hresult_errs[i].error_message;\n")
out_file.write(" break;\n")
out_file.write(" }\n")
out_file.write(" }\n")
out_file.write(" /* convert & check win32 error space? */\n")
out_file.write(" if (result == NULL && HRESULT_IS_LIKELY_WERR(err_code)) {\n")
out_file.write(" WERROR wErr = W_ERROR(WIN32_FROM_HRESULT(err_code));\n")
out_file.write(" result = get_friendly_werror_msg(wErr);\n")
out_file.write(" }\n")
out_file.write(" return result;\n")
out_file.write("};\n")
out_file.write("\n")
out_file.write("const char *hresult_errstr(HRESULT err_code)\n")
out_file.write("{\n");
out_file.write(" static char msg[22];\n")
out_file.write(" int i;\n")
out_file.write("\n")
out_file.write(" for (i = 0; i < ARRAY_SIZE(hresult_errs); i++) {\n")
out_file.write(" if (HRES_IS_EQUAL(err_code, hresult_errs[i].error_code)) {\n")
out_file.write(" return hresult_errs[i].error_str;\n")
out_file.write(" }\n")
out_file.write(" }\n")
out_file.write(" snprintf(msg, sizeof(msg), \"HRES code 0x%08x\", HRES_ERROR_V(err_code));\n")
out_file.write(" return msg;\n")
out_file.write("};\n")
# Very simple script to generate files hresult.c & hresult.h
# The script simply takes a text file as input, format of input file is
# very simple and is just the content of a html table ( such as that found
# in http://msdn.microsoft.com/en-us/library/cc704587.aspx ) copied and
# pasted into a text file
def main ():
input_file1 = None;
filename = "hresult"
headerfile_name = filename + ".h"
sourcefile_name = filename + ".c"
if len(sys.argv) > 1:
input_file1 = sys.argv[1]
else:
print("usage: %s winerrorfile"%(sys.argv[0]))
sys.exit()
parseErrorDescriptions(input_file1, False)
out_file = open(headerfile_name,"w")
generateHeaderFile(out_file)
out_file.close()
out_file = open(sourcefile_name,"w")
generateSourceFile(out_file)
if __name__ == '__main__':
main()
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