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
|
#!/usr/bin/env python3
#
# Looks for registration routines in the plugins
# and assembles C code to call all the routines.
# A new "plugin.c" file will be written in the current directory.
#
import os
import sys
import re
#
# The first argument is the directory in which the source files live.
#
srcdir = sys.argv[1]
#
# The second argument is either "plugin", "plugin_wtap", "plugin_codec",
# or "plugin_tap".
#
registertype = sys.argv[2]
#
# All subsequent arguments are the files to scan.
#
files = sys.argv[3:]
final_filename = "plugin.c"
preamble = """\
/*
* Do not modify this file. Changes will be overwritten.
*
* Generated automatically from %s.
*/
""" % (os.path.basename(sys.argv[0]))
# Create the proper list of filenames
filenames = []
for file in files:
if os.path.isfile(file):
filenames.append(file)
else:
filenames.append(os.path.join(srcdir, file))
if len(filenames) < 1:
print("No files found")
sys.exit(1)
# Look through all files, applying the regex to each line.
# If the pattern matches, save the "symbol" section to the
# appropriate set.
regs = {
'proto_reg': set(),
'handoff_reg': set(),
'wtap_register': set(),
'codec_register': set(),
'register_tap_listener': set(),
}
# For those that don't know Python, r"" indicates a raw string,
# devoid of Python escapes.
proto_regex = r"\bproto_register_(?P<symbol>[\w]+)\s*\(\s*void\s*\)\s*{"
handoff_regex = r"\bproto_reg_handoff_(?P<symbol>[\w]+)\s*\(\s*void\s*\)\s*{"
wtap_reg_regex = r"\bwtap_register_(?P<symbol>[\w]+)\s*\(\s*void\s*\)\s*{"
codec_reg_regex = r"\bcodec_register_(?P<symbol>[\w]+)\s*\(\s*void\s*\)\s*{"
tap_reg_regex = r"\bregister_tap_listener_(?P<symbol>[\w]+)\s*\(\s*void\s*\)\s*{"
# This table drives the pattern-matching and symbol-harvesting
patterns = [
( 'proto_reg', re.compile(proto_regex, re.MULTILINE | re.ASCII) ),
( 'handoff_reg', re.compile(handoff_regex, re.MULTILINE | re.ASCII) ),
( 'wtap_register', re.compile(wtap_reg_regex, re.MULTILINE | re.ASCII) ),
( 'codec_register', re.compile(codec_reg_regex, re.MULTILINE | re.ASCII) ),
( 'register_tap_listener', re.compile(tap_reg_regex, re.MULTILINE | re.ASCII) ),
]
# Grep
for filename in filenames:
file = open(filename)
# Read the whole file into memory
contents = file.read()
for action in patterns:
regex = action[1]
for match in regex.finditer(contents):
symbol = match.group("symbol")
sym_type = action[0]
regs[sym_type].add(symbol)
# We're done with the file contents
del contents
file.close()
# Make sure we actually processed something
if (len(regs['proto_reg']) < 1 and len(regs['wtap_register']) < 1 and len(regs['codec_register']) < 1 and len(regs['register_tap_listener']) < 1):
print("No plugin registrations found")
sys.exit(1)
# Convert the sets into sorted lists to make the output pretty
regs['proto_reg'] = sorted(regs['proto_reg'])
regs['handoff_reg'] = sorted(regs['handoff_reg'])
regs['wtap_register'] = sorted(regs['wtap_register'])
regs['codec_register'] = sorted(regs['codec_register'])
regs['register_tap_listener'] = sorted(regs['register_tap_listener'])
reg_code = ""
reg_code += preamble
reg_code += """
#include "config.h"
#include <gmodule.h>
/* plugins are DLLs on Windows */
#define WS_BUILD_DLL
#include "ws_symbol_export.h"
"""
if registertype == "plugin":
reg_code += "#include \"epan/proto.h\"\n\n"
if registertype == "plugin_wtap":
reg_code += "#include \"wiretap/wtap.h\"\n\n"
if registertype == "plugin_codec":
reg_code += "#include \"wsutil/codecs.h\"\n\n"
if registertype == "plugin_tap":
reg_code += "#include \"epan/tap.h\"\n\n"
for symbol in regs['proto_reg']:
reg_code += "void proto_register_%s(void);\n" % (symbol)
for symbol in regs['handoff_reg']:
reg_code += "void proto_reg_handoff_%s(void);\n" % (symbol)
for symbol in regs['wtap_register']:
reg_code += "void wtap_register_%s(void);\n" % (symbol)
for symbol in regs['codec_register']:
reg_code += "void codec_register_%s(void);\n" % (symbol)
for symbol in regs['register_tap_listener']:
reg_code += "void register_tap_listener_%s(void);\n" % (symbol)
reg_code += """
WS_DLL_PUBLIC_DEF const gchar plugin_version[] = PLUGIN_VERSION;
WS_DLL_PUBLIC_DEF const int plugin_want_major = VERSION_MAJOR;
WS_DLL_PUBLIC_DEF const int plugin_want_minor = VERSION_MINOR;
WS_DLL_PUBLIC void plugin_register(void);
void plugin_register(void)
{
"""
if registertype == "plugin":
for symbol in regs['proto_reg']:
reg_code +=" static proto_plugin plug_%s;\n\n" % (symbol)
reg_code +=" plug_%s.register_protoinfo = proto_register_%s;\n" % (symbol, symbol)
if symbol in regs['handoff_reg']:
reg_code +=" plug_%s.register_handoff = proto_reg_handoff_%s;\n" % (symbol, symbol)
else:
reg_code +=" plug_%s.register_handoff = NULL;\n" % (symbol)
reg_code += " proto_register_plugin(&plug_%s);\n" % (symbol)
if registertype == "plugin_wtap":
for symbol in regs['wtap_register']:
reg_code += " static wtap_plugin plug_%s;\n\n" % (symbol)
reg_code += " plug_%s.register_wtap_module = wtap_register_%s;\n" % (symbol, symbol)
reg_code += " wtap_register_plugin(&plug_%s);\n" % (symbol)
if registertype == "plugin_codec":
for symbol in regs['codec_register']:
reg_code += " static codecs_plugin plug_%s;\n\n" % (symbol)
reg_code += " plug_%s.register_codec_module = codec_register_%s;\n" % (symbol, symbol)
reg_code += " codecs_register_plugin(&plug_%s);\n" % (symbol)
if registertype == "plugin_tap":
for symbol in regs['register_tap_listener']:
reg_code += " static tap_plugin plug_%s;\n\n" % (symbol)
reg_code += " plug_%s.register_tap_listener = register_tap_listener_%s;\n" % (symbol, symbol)
reg_code += " tap_register_plugin(&plug_%s);\n" % (symbol)
reg_code += "}\n"
try:
fh = open(final_filename, 'w')
fh.write(reg_code)
fh.close()
except OSError:
sys.exit('Unable to write ' + final_filename + '.\n')
#
# Editor modelines - https://www.wireshark.org/tools/modelines.html
#
# Local variables:
# c-basic-offset: 4
# indent-tabs-mode: nil
# End:
#
# vi: set shiftwidth=4 expandtab:
# :indentSize=4:noTabs=true:
#
|
