summaryrefslogtreecommitdiff
path: root/PCbuild/prepare_ssl.py
blob: 0f3c63ee24ffba080ff7a0aeb524fe4dacaa120a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
#! /usr/bin/env python3
# Script for preparing OpenSSL for building on Windows.
# Uses Perl to create nmake makefiles and otherwise prepare the way
# for building on 32 or 64 bit platforms.

# Script originally authored by Mark Hammond.
# Major revisions by:
#   Martin v. Löwis
#   Christian Heimes
#   Zachary Ware

# THEORETICALLY, you can:
# * Unpack the latest OpenSSL release where $(opensslDir) in
#   PCbuild\pyproject.props expects it to be.
# * Install ActivePerl and ensure it is somewhere on your path.
# * Run this script with the OpenSSL source dir as the only argument.
#
# it should configure OpenSSL such that it is ready to be built by
# ssl.vcxproj on 32 or 64 bit platforms.

from __future__ import print_function

import os
import re
import sys
import subprocess
from shutil import copy

# Find all "foo.exe" files on the PATH.
def find_all_on_path(filename, extras=None):
    entries = os.environ["PATH"].split(os.pathsep)
    ret = []
    for p in entries:
        fname = os.path.abspath(os.path.join(p, filename))
        if os.path.isfile(fname) and fname not in ret:
            ret.append(fname)
    if extras:
        for p in extras:
            fname = os.path.abspath(os.path.join(p, filename))
            if os.path.isfile(fname) and fname not in ret:
                ret.append(fname)
    return ret


# Find a suitable Perl installation for OpenSSL.
# cygwin perl does *not* work.  ActivePerl does.
# Being a Perl dummy, the simplest way I can check is if the "Win32" package
# is available.
def find_working_perl(perls):
    for perl in perls:
        try:
            subprocess.check_output([perl, "-e", "use Win32;"])
        except subprocess.CalledProcessError:
            continue
        else:
            return perl

    if perls:
        print("The following perl interpreters were found:")
        for p in perls:
            print(" ", p)
        print(" None of these versions appear suitable for building OpenSSL")
    else:
        print("NO perl interpreters were found on this machine at all!")
    print(" Please install ActivePerl and ensure it appears on your path")


def copy_includes(makefile, suffix):
    dir = 'inc'+suffix+'\\openssl'
    try:
        os.makedirs(dir)
    except OSError:
        pass
    copy_if_different = r'$(PERL) $(SRC_D)\util\copy-if-different.pl'
    with open(makefile) as fin:
        for line in fin:
            if copy_if_different in line:
                perl, script, src, dest = line.split()
                if not '$(INCO_D)' in dest:
                    continue
                # We're in the root of the source tree
                src = src.replace('$(SRC_D)', '.').strip('"')
                dest = dest.strip('"').replace('$(INCO_D)', dir)
                print('copying', src, 'to', dest)
                copy(src, dest)


def run_configure(configure, do_script):
    print("perl Configure "+configure+" no-idea no-mdc2")
    os.system("perl Configure "+configure+" no-idea no-mdc2")
    print(do_script)
    os.system(do_script)

def fix_uplink():
    # uplink.c tries to find the OPENSSL_Applink function exported from the current
    # executable. However, we export it from _ssl[_d].pyd instead. So we update the
    # module name here before building.
    with open('ms\\uplink.c', 'r', encoding='utf-8') as f1:
        code = list(f1)
    os.replace('ms\\uplink.c', 'ms\\uplink.c.orig')
    already_patched = False
    with open('ms\\uplink.c', 'w', encoding='utf-8') as f2:
        for line in code:
            if not already_patched:
                if re.search('MODIFIED FOR CPYTHON _ssl MODULE', line):
                    already_patched = True
                elif re.match(r'^\s+if\s*\(\(h\s*=\s*GetModuleHandle[AW]?\(NULL\)\)\s*==\s*NULL\)', line):
                    f2.write("/* MODIFIED FOR CPYTHON _ssl MODULE */\n")
                    f2.write('if ((h = GetModuleHandleW(L"_ssl.pyd")) == NULL) if ((h = GetModuleHandleW(L"_ssl_d.pyd")) == NULL)\n')
                    already_patched = True
            f2.write(line)
    if not already_patched:
        print("WARN: failed to patch ms\\uplink.c")

def prep(arch):
    makefile_template = "ms\\ntdll{}.mak"
    generated_makefile = makefile_template.format('')
    if arch == "x86":
        configure = "VC-WIN32"
        do_script = "ms\\do_nasm"
        suffix = "32"
    elif arch == "amd64":
        configure = "VC-WIN64A"
        do_script = "ms\\do_win64a"
        suffix = "64"
    else:
        raise ValueError('Unrecognized platform: %s' % arch)

    print("Creating the makefiles...")
    sys.stdout.flush()
    # run configure, copy includes, patch files
    run_configure(configure, do_script)
    makefile = makefile_template.format(suffix)
    try:
        os.unlink(makefile)
    except FileNotFoundError:
        pass
    os.rename(generated_makefile, makefile)
    copy_includes(makefile, suffix)

    print('patching ms\\uplink.c...')
    fix_uplink()

def main():
    if len(sys.argv) == 1:
        print("Not enough arguments: directory containing OpenSSL",
              "sources must be supplied")
        sys.exit(1)

    if len(sys.argv) == 3 and sys.argv[2] not in ('x86', 'amd64'):
        print("Second argument must be x86 or amd64")
        sys.exit(1)

    if len(sys.argv) > 3:
        print("Too many arguments supplied, all we need is the directory",
              "containing OpenSSL sources and optionally the architecture")
        sys.exit(1)

    ssl_dir = sys.argv[1]
    arch = sys.argv[2] if len(sys.argv) >= 3 else None

    if not os.path.isdir(ssl_dir):
        print(ssl_dir, "is not an existing directory!")
        sys.exit(1)

    # perl should be on the path, but we also look in "\perl" and "c:\\perl"
    # as "well known" locations
    perls = find_all_on_path("perl.exe", [r"\perl\bin",
                                          r"C:\perl\bin",
                                          r"\perl64\bin",
                                          r"C:\perl64\bin",
                                         ])
    perl = find_working_perl(perls)
    if perl:
        print("Found a working perl at '%s'" % (perl,))
    else:
        sys.exit(1)
    if not find_all_on_path('nmake.exe'):
        print('Could not find nmake.exe, try running env.bat')
        sys.exit(1)
    if not find_all_on_path('nasm.exe'):
        print('Could not find nasm.exe, please add to PATH')
        sys.exit(1)
    sys.stdout.flush()

    # Put our working Perl at the front of our path
    os.environ["PATH"] = os.path.dirname(perl) + \
                                os.pathsep + \
                                os.environ["PATH"]

    old_cwd = os.getcwd()
    try:
        os.chdir(ssl_dir)
        if arch:
            prep(arch)
        else:
            for arch in ['amd64', 'x86']:
                prep(arch)
    finally:
        os.chdir(old_cwd)

if __name__=='__main__':
    main()