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
257
258
259
260
261
262
263
264
265
266
267
268
|
/**
* config.c
* Routines for loading the configuration file.
*
* Matej Pfajfar <mp292@cam.ac.uk>
*/
/*
* Changes :
* $Log$
* Revision 1.9 2002/07/11 19:03:44 montrose
* finishing touches. think its ready for integration now.
*
* Revision 1.8 2002/07/11 18:38:15 montrose
* added new option GlobalRole to getoptions()
*
* Revision 1.7 2002/07/11 14:50:26 montrose
* cleaned up some, added validation to getoptions()
*
* Revision 1.6 2002/07/10 12:37:49 montrose
* Added usage display on error.
*
* Revision 1.5 2002/07/09 19:51:41 montrose
* Miscellaneous bug fixes / activated "make check" for src/or
*
* Revision 1.4 2002/07/03 19:58:18 montrose
* minor bug fix in error checking
*
* Revision 1.3 2002/07/03 16:53:34 montrose
* added error checking into getoptions()
*
* Revision 1.2 2002/07/03 16:31:22 montrose
* Added getoptions() and made minor adjustment to poptReadDefaultOptions()
*
* Revision 1.1.1.1 2002/06/26 22:45:50 arma
* initial commit: current code
*
* Revision 1.3 2002/04/02 14:28:24 badbytes
* Final finishes.
*
* Revision 1.2 2002/01/27 00:42:50 mp292
* Reviewed according to Secure-Programs-HOWTO.
*
* Revision 1.1 2002/01/03 10:24:05 badbytes
* COde based on that in op. Needs to be modified.
*
*/
#include "or.h"
#include <libgen.h>
/* loads the configuration file */
int getconfig(char *conf_filename, config_opt_t *options)
{
FILE *cf = NULL;
int retval = 0;
if ((!conf_filename) || (!options))
return -1;
/* load config file */
cf = open_config(conf_filename);
if (!cf)
{
log(LOG_ERR,"Could not open configuration file %s.",conf_filename);
return -1;
}
retval = parse_config(cf,options);
if (retval)
return -1;
return 0;
}
int getoptions(int argc, char **argv, or_options_t *options)
/**
A replacement for getargs() and getconfig() which uses the <popt> library to parse
both command-line arguments and configuration files. A specific configuration file
may be specified using the --ConfigFile option. If one is not specified, then the
configuration files at /etc/<cmd>rc and ~/.<cmd>rc will be loaded in that order so
user preferences will override the ones specified in /etc.
The --ConfigFile (-f) option may only be used on the command-line. All other command-line
options may also be specified in configuration files. <popt> aliases are enabled
so a user can define their own options in the /etc/popt or ~/.popt files as outlined
in "man popt" pages.
RETURN VALUE: 0 on success, non-zero on error
**/
{
char *ConfigFile;
int Verbose;
int code;
poptContext optCon;
char *cmd;
struct poptOption opt_tab[] =
{
{ "APPort", 'a', POPT_ARG_INT, &options->APPort,
0, "application proxy port", "<port>" },
{ "CoinWeight", 'w', POPT_ARG_FLOAT, &options->CoinWeight,
0, "coin weight used in determining routes", "<weight>" },
{ "ConfigFile", 'f', POPT_ARG_STRING, &ConfigFile,
0, "user specified configuration file", "<file>" },
{ "LogLevel", 'l', POPT_ARG_STRING, &options->LogLevel,
0, "emerg|alert|crit|err|warning|notice|info|debug", "<level>" },
{ "MaxConn", 'm', POPT_ARG_INT, &options->MaxConn,
0, "maximum number of incoming connections", "<max>" },
{ "OPPort", 'o', POPT_ARG_INT, &options->OPPort,
0, "onion proxy port", "<port>" },
{ "ORPort", 'p', POPT_ARG_INT, &options->ORPort,
0, "onion router port", "<port>" },
{ "PrivateKeyFile", 'k', POPT_ARG_STRING, &options->PrivateKeyFile,
0, "maximum number of incoming connections", "<max>" },
{ "RouterFile", 'r', POPT_ARG_STRING, &options->RouterFile,
0, "local port on which the onion proxy is running", "<port>" },
{ "TrafficShaping", 't', POPT_ARG_INT, &options->TrafficShaping,
0, "which traffic shaping policy to use", "<policy>" },
{ "GlobalRole", 'g', POPT_ARG_INT, &options->GlobalRole,
0, "4-bit global role id", "<role>" },
{ "Verbose", 'v', POPT_ARG_NONE, &Verbose,
0, "display options selected before execution", NULL },
POPT_AUTOHELP /* handles --usage and --help automatically */
POPT_TABLEEND /* marks end of table */
};
cmd = basename(argv[0]);
optCon = poptGetContext(cmd,argc,(const char **)argv,opt_tab,0);
poptReadDefaultConfig(optCon,0); /* read <popt> alias definitions */
/* assign default option values */
bzero(options,sizeof(or_options_t));
options->LogLevel = "debug";
options->loglevel = LOG_DEBUG;
options->CoinWeight = 0.8;
options->GlobalRole = ROLE_OR_LISTEN | ROLE_OR_CONNECT_ALL | ROLE_OP_LISTEN | ROLE_AP_LISTEN;
code = poptGetNextOpt(optCon); /* first we handle command-line args */
if ( code == -1 )
{
if ( ConfigFile ) /* handle user-specified config file */
code = poptReadOptions(optCon,ConfigFile);
else /* load Default configuration files */
code = poptReadDefaultOptions(cmd,optCon);
}
switch(code) /* error checking */
{
case INT_MIN:
log(LOG_ERR, "%s: Unable to open configuration file.\n", ConfigFile);
break;
case -1:
code = 0;
break;
default:
poptPrintUsage(optCon, stderr, 0);
log(LOG_ERR, "%s: %s\n", poptBadOption(optCon, POPT_BADOPTION_NOALIAS), poptStrerror(code));
break;
}
poptFreeContext(optCon);
if ( code ) return code; /* return here if we encountered any problems */
/* Display options upon user request */
if ( Verbose )
{
printf("LogLevel=%s, GlobalRole=%d\n",
options->LogLevel,
options->GlobalRole);
printf("RouterFile=%s, PrivateKeyFile=%s\n",
options->RouterFile,
options->PrivateKeyFile);
printf("ORPort=%d, OPPort=%d, APPort=%d\n",
options->ORPort,options->OPPort,
options->APPort);
printf("CoinWeight=%6.4f, MaxConn=%d, TrafficShaping=%d\n",
options->CoinWeight,
options->MaxConn,
options->TrafficShaping);
}
/* Validate options */
if ( options->LogLevel )
{
if (!strcmp(options->LogLevel,"emerg"))
options->loglevel = LOG_EMERG;
else if (!strcmp(options->LogLevel,"alert"))
options->loglevel = LOG_ALERT;
else if (!strcmp(options->LogLevel,"crit"))
options->loglevel = LOG_CRIT;
else if (!strcmp(options->LogLevel,"err"))
options->loglevel = LOG_ERR;
else if (!strcmp(options->LogLevel,"warning"))
options->loglevel = LOG_WARNING;
else if (!strcmp(options->LogLevel,"notice"))
options->loglevel = LOG_NOTICE;
else if (!strcmp(options->LogLevel,"info"))
options->loglevel = LOG_INFO;
else if (!strcmp(options->LogLevel,"debug"))
options->loglevel = LOG_DEBUG;
else
{
log(LOG_ERR,"LogLevel must be one of emerg|alert|crit|err|warning|notice|info|debug.");
code = -1;
}
}
if ( options->RouterFile == NULL )
{
log(LOG_ERR,"RouterFile option required, but not found.");
code = -1;
}
if ( options->PrivateKeyFile == NULL )
{
log(LOG_ERR,"PrivateKeyFile option required, but not found.");
code = -1;
}
if ( options->ORPort < 1 )
{
log(LOG_ERR,"ORPort option required and must be a positive integer value.");
code = -1;
}
if ( options->OPPort < 1 )
{
log(LOG_ERR,"OPPort option required and must be a positive integer value.");
code = -1;
}
if ( options->APPort < 1 )
{
log(LOG_ERR,"APPort option required and must be a positive integer value.");
code = -1;
}
if ( options->CoinWeight < 0.0 || options->CoinWeight >= 1.0 )
{
log(LOG_ERR,"CoinWeight option must a value from 0.0 upto 1.0, but not including 1.0.");
code = -1;
}
if ( options->MaxConn <= 0 )
{
log(LOG_ERR,"MaxConn option must be a non-zero positive integer.");
code = -1;
}
if ( options->TrafficShaping != 0 && options->TrafficShaping != 1 )
{
log(LOG_ERR,"TrafficShaping option must be either 0 or 1.");
code = -1;
}
if ( options->GlobalRole < 0 || options->GlobalRole > 15 )
{
log(LOG_ERR,"GlobalRole option must be an integer between 0 and 15 (inclusive).");
code = -1;
}
return code;
}
|