1/*
2 * src/utils.c		Utilities
3 *
4 *	This library is free software; you can redistribute it and/or
5 *	modify it under the terms of the GNU Lesser General Public
6 *	License as published by the Free Software Foundation version 2.1
7 *	of the License.
8 *
9 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
10 */
11
12/**
13 * @defgroup cli Command Line Interface API
14 *
15 * @{
16 */
17
18#include <netlink/cli/utils.h>
19
20uint32_t nl_cli_parse_u32(const char *arg)
21{
22	unsigned long lval;
23	char *endptr;
24
25	lval = strtoul(arg, &endptr, 0);
26	if (endptr == arg || lval == ULONG_MAX)
27		nl_cli_fatal(EINVAL, "Unable to parse \"%s\", not a number.",
28			     arg);
29
30	return (uint32_t) lval;
31}
32
33void nl_cli_print_version(void)
34{
35	printf("libnl tools version %s\n", LIBNL_VERSION);
36	printf(
37	"Copyright (C) 2003-2009 Thomas Graf <tgraf@redhat.com>\n"
38	"\n"
39	"This program comes with ABSOLUTELY NO WARRANTY. This is free \n"
40	"software, and you are welcome to redistribute it under certain\n"
41	"conditions. See the GNU General Public License for details.\n"
42	);
43
44	exit(0);
45}
46
47void nl_cli_fatal(int err, const char *fmt, ...)
48{
49	va_list ap;
50
51	fprintf(stderr, "Error: ");
52
53	if (fmt) {
54		va_start(ap, fmt);
55		vfprintf(stderr, fmt, ap);
56		va_end(ap);
57		fprintf(stderr, "\n");
58	} else
59		fprintf(stderr, "%s\n", strerror(err));
60
61	exit(abs(err));
62}
63
64int nl_cli_connect(struct nl_sock *sk, int protocol)
65{
66	int err;
67
68	if ((err = nl_connect(sk, protocol)) < 0)
69		nl_cli_fatal(err, "Unable to connect netlink socket: %s",
70			     nl_geterror(err));
71
72	return err;
73}
74
75struct nl_sock *nl_cli_alloc_socket(void)
76{
77	struct nl_sock *sock;
78
79	if (!(sock = nl_socket_alloc()))
80		nl_cli_fatal(ENOBUFS, "Unable to allocate netlink socket");
81
82	return sock;
83}
84
85struct nl_addr *nl_cli_addr_parse(const char *str, int family)
86{
87	struct nl_addr *addr;
88	int err;
89
90	if ((err = nl_addr_parse(str, family, &addr)) < 0)
91		nl_cli_fatal(err, "Unable to parse address \"%s\": %s",
92			     str, nl_geterror(err));
93
94	return addr;
95}
96
97int nl_cli_parse_dumptype(const char *str)
98{
99	if (!strcasecmp(str, "brief"))
100		return NL_DUMP_LINE;
101	else if (!strcasecmp(str, "details") || !strcasecmp(str, "detailed"))
102		return NL_DUMP_DETAILS;
103	else if (!strcasecmp(str, "stats"))
104		return NL_DUMP_STATS;
105	else if (!strcasecmp(str, "env"))
106		return NL_DUMP_ENV;
107	else
108		nl_cli_fatal(EINVAL, "Invalid dump type \"%s\".\n", str);
109
110	return 0;
111}
112
113int nl_cli_confirm(struct nl_object *obj, struct nl_dump_params *params,
114		   int default_yes)
115{
116	int answer;
117
118	nl_object_dump(obj, params);
119	printf("Delete? (%c/%c) ",
120		default_yes ? 'Y' : 'y',
121		default_yes ? 'n' : 'N');
122
123	do {
124		answer = tolower(getchar());
125		if (answer == '\n')
126			answer = default_yes ? 'y' : 'n';
127	} while (answer != 'y' && answer != 'n');
128
129	return answer == 'y';
130}
131
132struct nl_cache *nl_cli_alloc_cache(struct nl_sock *sock, const char *name,
133			    int (*ac)(struct nl_sock *, struct nl_cache **))
134{
135	struct nl_cache *cache;
136	int err;
137
138	if ((err = ac(sock, &cache)) < 0)
139		nl_cli_fatal(err, "Unable to allocate %s cache: %s",
140			     name, nl_geterror(err));
141
142	nl_cache_mngt_provide(cache);
143
144	return cache;
145}
146
147/** @} */
148