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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/*
* Copyright (C) 2009 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include "command.h"
#include "pki.h"
#define _GNU_SOURCE
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <library.h>
#include <debug.h>
#include <utils/optionsfrom.h>
/**
* Registered commands.
*/
command_t cmds[MAX_COMMANDS];
/**
* active command.
*/
static int active = 0;
/**
* number of registered commands
*/
static int registered = 0;
/**
* help command index
*/
static int help_idx;
static int argc;
static char **argv;
static options_t *options;
/**
* Global options used by all subcommands
*/
static struct option command_opts[MAX_COMMANDS > MAX_OPTIONS ?: MAX_OPTIONS];
/**
* Global optstring used by all subcommands
*/
static char command_optstring[(MAX_COMMANDS > MAX_OPTIONS ?: MAX_OPTIONS) * 3];
/**
* Build command_opts/command_optstr for the active command
*/
static void build_opts()
{
int i, pos = 0;
memset(command_opts, 0, sizeof(command_opts));
memset(command_optstring, 0, sizeof(command_optstring));
if (active == help_idx)
{
for (i = 0; cmds[i].cmd; i++)
{
command_opts[i].name = cmds[i].cmd;
command_opts[i].val = cmds[i].op;
command_optstring[i] = cmds[i].op;
}
}
else
{
for (i = 0; cmds[active].options[i].name; i++)
{
command_opts[i].name = cmds[active].options[i].name;
command_opts[i].has_arg = cmds[active].options[i].arg;
command_opts[i].val = cmds[active].options[i].op;
command_optstring[pos++] = cmds[active].options[i].op;
switch (cmds[active].options[i].arg)
{
case optional_argument:
command_optstring[pos++] = ':';
/* FALL */
case required_argument:
command_optstring[pos++] = ':';
/* FALL */
case no_argument:
default:
break;
}
}
}
}
/**
* getopt_long wrapper
*/
int command_getopt(char **arg)
{
int op;
while (TRUE)
{
op = getopt_long(argc, argv, command_optstring, command_opts, NULL);
switch (op)
{
case '+':
if (!options->from(options, optarg, &argc, &argv, optind))
{
/* a error value */
return 255;
}
continue;
case 'v':
dbg_default_set_level(atoi(optarg));
continue;
default:
*arg = optarg;
return op;
}
}
}
/**
* Register a command
*/
void command_register(command_t command)
{
int i;
cmds[registered] = command;
/* append default options, but not to --help */
if (!active)
{
for (i = 0; i < countof(cmds[registered].options); i++)
{
if (cmds[registered].options[i].name)
{
continue;
}
cmds[registered].options[i++] = (command_option_t) {
"debug", 'v', 1, "set debug level, default: 1"
};
cmds[registered].options[i++] = (command_option_t) {
"options", '+', 1, "read command line options from file"
};
break;
}
}
registered++;
}
/**
* Print usage text, with an optional error
*/
int command_usage(char *error)
{
FILE *out = stdout;
int i;
if (error)
{
out = stderr;
fprintf(out, "Error: %s\n", error);
}
fprintf(out, "strongSwan %s PKI tool\n", VERSION);
fprintf(out, "usage:\n");
if (active == help_idx)
{
for (i = 0; cmds[i].cmd; i++)
{
fprintf(out, " pki --%-6s (-%c) %s\n",
cmds[i].cmd, cmds[i].op, cmds[i].description);
}
}
else
{
for (i = 0; cmds[active].line[i]; i++)
{
if (i == 0)
{
fprintf(out, " pki --%s %s\n",
cmds[active].cmd, cmds[active].line[i]);
}
else
{
fprintf(out, " %s\n", cmds[active].line[i]);
}
}
for (i = 0; cmds[active].options[i].name; i++)
{
fprintf(out, " --%-8s (-%c) %s\n",
cmds[active].options[i].name, cmds[active].options[i].op,
cmds[active].options[i].desc);
}
}
return error != NULL;
}
/**
* Show usage information
*/
static int help(int argc, char *argv[])
{
return command_usage(NULL);
}
/**
* Dispatch cleanup hook
*/
static void cleanup()
{
options->destroy(options);
}
/**
* Dispatch commands.
*/
int command_dispatch(int c, char *v[])
{
int op, i;
options = options_create();
atexit(cleanup);
active = help_idx = registered;
argc = c;
argv = v;
command_register((command_t){help, 'h', "help", "show usage information"});
build_opts();
op = getopt_long(c, v, command_optstring, command_opts, NULL);
for (i = 0; cmds[i].cmd; i++)
{
if (cmds[i].op == op)
{
active = i;
build_opts();
return cmds[i].call();
}
}
return command_usage("invalid operation");
}
|
