cmd_args.c revision 285612 
1/*
2 * cmd_args.c = command-line argument processing
3 */
4#ifdef HAVE_CONFIG_H
5# include <config.h>
6#endif
7
8#include "ntpd.h"
9#include "ntp_stdlib.h"
10#include "ntp_config.h"
11#include "ntp_cmdargs.h"
12
13#include "ntpd-opts.h"
14
15/*
16 * Definitions of things either imported from or exported to outside
17 */
18extern char const *progname;
19
20#ifdef HAVE_NETINFO
21extern int	check_netinfo;
22#endif
23
24
25/*
26 * getCmdOpts - apply most command line options
27 *
28 * A few options are examined earlier in ntpd.c ntpdmain() and
29 * ports/winnt/ntpd/ntservice.c main().
30 */
31void
32getCmdOpts(
33	int	argc,
34	char **	argv
35	)
36{
37	extern const char *config_file;
38	int errflg;
39
40	/*
41	 * Initialize, initialize
42	 */
43	errflg = 0;
44
45	if (ipv4_works && ipv6_works) {
46		if (HAVE_OPT( IPV4 ))
47			ipv6_works = 0;
48		else if (HAVE_OPT( IPV6 ))
49			ipv4_works = 0;
50	} else if (!ipv4_works && !ipv6_works) {
51		msyslog(LOG_ERR, "Neither IPv4 nor IPv6 networking detected, fatal.");
52		exit(1);
53	} else if (HAVE_OPT( IPV4 ) && !ipv4_works)
54		msyslog(LOG_WARNING, "-4/--ipv4 ignored, IPv4 networking not found.");
55	else if (HAVE_OPT( IPV6 ) && !ipv6_works)
56		msyslog(LOG_WARNING, "-6/--ipv6 ignored, IPv6 networking not found.");
57
58	if (HAVE_OPT( AUTHREQ ))
59		proto_config(PROTO_AUTHENTICATE, 1, 0., NULL);
60	else if (HAVE_OPT( AUTHNOREQ ))
61		proto_config(PROTO_AUTHENTICATE, 0, 0., NULL);
62
63	if (HAVE_OPT( BCASTSYNC ))
64		proto_config(PROTO_BROADCLIENT, 1, 0., NULL);
65
66	if (HAVE_OPT( CONFIGFILE )) {
67		config_file = OPT_ARG( CONFIGFILE );
68#ifdef HAVE_NETINFO
69		check_netinfo = 0;
70#endif
71	}
72
73	if (HAVE_OPT( DRIFTFILE ))
74		stats_config(STATS_FREQ_FILE, OPT_ARG( DRIFTFILE ));
75
76	if (HAVE_OPT( PANICGATE ))
77		allow_panic = TRUE;
78
79	if (HAVE_OPT( FORCE_STEP_ONCE ))
80		force_step_once = TRUE;
81
82#ifdef HAVE_DROPROOT
83	if (HAVE_OPT( JAILDIR )) {
84		droproot = 1;
85		chrootdir = OPT_ARG( JAILDIR );
86	}
87#endif
88
89	if (HAVE_OPT( KEYFILE ))
90		getauthkeys(OPT_ARG( KEYFILE ));
91
92	if (HAVE_OPT( PIDFILE ))
93		stats_config(STATS_PID_FILE, OPT_ARG( PIDFILE ));
94
95	if (HAVE_OPT( QUIT ))
96		mode_ntpdate = TRUE;
97
98	if (HAVE_OPT( PROPAGATIONDELAY ))
99		do {
100			double tmp;
101			const char *my_ntp_optarg = OPT_ARG( PROPAGATIONDELAY );
102
103			if (sscanf(my_ntp_optarg, "%lf", &tmp) != 1) {
104				msyslog(LOG_ERR,
105					"command line broadcast delay value %s undecodable",
106					my_ntp_optarg);
107			} else {
108				proto_config(PROTO_BROADDELAY, 0, tmp, NULL);
109			}
110		} while (0);
111
112	if (HAVE_OPT( STATSDIR ))
113		stats_config(STATS_STATSDIR, OPT_ARG( STATSDIR ));
114
115	if (HAVE_OPT( TRUSTEDKEY )) {
116		int		ct = STACKCT_OPT(  TRUSTEDKEY );
117		const char**	pp = STACKLST_OPT( TRUSTEDKEY );
118
119		do  {
120			u_long tkey;
121			const char* p = *pp++;
122
123			tkey = (int)atol(p);
124			if (tkey == 0 || tkey > NTP_MAXKEY) {
125				msyslog(LOG_ERR,
126				    "command line trusted key %s is invalid",
127				    p);
128			} else {
129				authtrust(tkey, 1);
130			}
131		} while (--ct > 0);
132	}
133
134#ifdef HAVE_DROPROOT
135	if (HAVE_OPT( USER )) {
136		droproot = 1;
137		user = estrdup(OPT_ARG( USER ));
138		group = strrchr(user, ':');
139		if (group != NULL) {
140			size_t	len;
141
142			*group++ = '\0'; /* get rid of the ':' */
143			len = group - user;
144			group = estrdup(group);
145			user = erealloc(user, len);
146		}
147	}
148#endif
149
150	if (HAVE_OPT( VAR )) {
151		int		ct;
152		const char **	pp;
153		const char *	v_assign;
154
155		ct = STACKCT_OPT(  VAR );
156		pp = STACKLST_OPT( VAR );
157
158		do  {
159			v_assign = *pp++;
160			set_sys_var(v_assign, strlen(v_assign) + 1, RW);
161		} while (--ct > 0);
162	}
163
164	if (HAVE_OPT( DVAR )) {
165		int		ct = STACKCT_OPT(  DVAR );
166		const char**	pp = STACKLST_OPT( DVAR );
167
168		do  {
169			const char* my_ntp_optarg = *pp++;
170
171			set_sys_var(my_ntp_optarg, strlen(my_ntp_optarg)+1,
172			    (u_short) (RW | DEF));
173		} while (--ct > 0);
174	}
175
176	if (HAVE_OPT( SLEW ))
177		loop_config(LOOP_MAX, 600);
178
179	if (HAVE_OPT( UPDATEINTERVAL )) {
180		long val = OPT_VALUE_UPDATEINTERVAL;
181
182		if (val >= 0)
183			interface_interval = val;
184		else {
185			fprintf(stderr,
186				"command line interface update interval %ld must not be negative\n",
187				val);
188			msyslog(LOG_ERR,
189				"command line interface update interval %ld must not be negative",
190				val);
191			errflg++;
192		}
193	}
194
195
196	/* save list of servers from cmd line for config_peers() use */
197	if (argc > 0) {
198		cmdline_server_count = argc;
199		cmdline_servers = argv;
200	}
201
202	/* display usage & exit with any option processing errors */
203	if (errflg)
204		optionUsage(&ntpdOptions, 2);	/* does not return */
205}
206