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100 lines
3.5 KiB
Python
Executable file
100 lines
3.5 KiB
Python
Executable file
#! /usr/bin/env python3
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"""
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This script should be called *manually* when we want to upgrade SSLError
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`library` and `reason` mnemonics to a more recent OpenSSL version.
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It takes two arguments:
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- the path to the OpenSSL source tree (e.g. git checkout)
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- the path to the C file to be generated
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(probably Modules/_ssl_data.h)
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"""
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import datetime
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import glob
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import os
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import re
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import sys
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import _ssl
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def parse_error_codes(h_file, prefix, libcode):
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pat = re.compile(r"#\s*define\W+(%s([\w]+))\W+(\d+)\b" % re.escape(prefix))
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codes = []
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with open(h_file, "r", encoding="latin1") as f:
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for line in f:
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match = pat.search(line)
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if match:
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code, name, num = match.groups()
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num = int(num)
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# e.g. ("SSL_R_BAD_DATA", ("ERR_LIB_SSL", "BAD_DATA", 390))
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codes.append((code, (libcode, name, num)))
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assert codes, f"no codes found in {h_file}"
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return codes
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if __name__ == "__main__":
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openssl_inc = sys.argv[1]
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outfile = sys.argv[2]
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use_stdout = outfile == '-'
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f = sys.stdout if use_stdout else open(outfile, "w")
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# mnemonic -> (library code, error prefix, header file)
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error_libraries = {}
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for error_header in glob.glob(os.path.join(glob.escape(openssl_inc), 'include/openssl/*err.h')):
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base = os.path.basename(error_header)
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if base in ('buffererr.h', 'objectserr.h', 'storeerr.h'):
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# Deprecated in 3.0.
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continue
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mnemonic = base[:-5].upper()
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if mnemonic == "":
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# err.h
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lib_codes = {
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code: num
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for (code, (_, _, num)) in parse_error_codes(error_header, 'ERR_LIB_', None)
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}
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else:
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error_libraries[mnemonic] = (f'ERR_LIB_{mnemonic}', f'{mnemonic}_R_', error_header)
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# Read codes from libraries
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new_codes = []
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for libcode, prefix, h_file in sorted(error_libraries.values()):
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new_codes += parse_error_codes(h_file, prefix, libcode)
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new_code_nums = set((libcode, num)
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for (code, (libcode, name, num)) in new_codes)
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# Merge with existing codes (in case some old codes disappeared).
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codes = {}
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for errname, (libnum, errnum) in _ssl.err_names_to_codes.items():
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lib = error_libraries[_ssl.lib_codes_to_names[libnum]]
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libcode = lib[0] # e.g. ERR_LIB_PEM
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errcode = lib[1] + errname # e.g. SSL_R_BAD_SSL_SESSION_ID_LENGTH
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# Only keep it if the numeric codes weren't reused
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if (libcode, errnum) not in new_code_nums:
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codes[errcode] = libcode, errname, errnum
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codes.update(dict(new_codes))
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def w(l):
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f.write(l + "\n")
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w("/* File generated by Tools/ssl/make_ssl_data.py */")
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w("/* Generated on %s */" % datetime.datetime.now().isoformat())
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w("")
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w("static struct py_ssl_library_code library_codes[] = {")
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for mnemo, (libcode, _, _) in sorted(error_libraries.items()):
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w(f'#ifdef {libcode}')
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w(' {"%s", %s},' % (mnemo, libcode))
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w('#endif')
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w(' { NULL }')
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w('};')
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w("")
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w("static struct py_ssl_error_code error_codes[] = {")
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for errcode, (libcode, name, num) in sorted(codes.items()):
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w(' #ifdef %s' % (errcode))
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w(' {"%s", %s, %s},' % (name, libcode, errcode))
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w(' #else')
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w(' {"%s", %s, %d},' % (name, lib_codes[libcode], num))
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w(' #endif')
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w(' { NULL }')
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w('};')
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if not use_stdout:
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f.close()
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