[mirror_iproute2.git] / tc / tc.c

/*
 * tc.c		"tc" utility frontend.
 *
 *		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.
 *
 * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 * Fixes:
 *
 * Petri Mattila <petri@prihateam.fi> 990308: wrong memset's resulted in faults
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <errno.h>

#include "SNAPSHOT.h"
#include "utils.h"
#include "tc_util.h"
#include "tc_common.h"

int show_stats = 0;
int show_details = 0;
int show_raw = 0;
int resolve_hosts = 0;

void *BODY;
static struct qdisc_util * qdisc_list;
static struct filter_util * filter_list;

static int print_noqopt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
	if (opt && RTA_PAYLOAD(opt))
		fprintf(f, "[Unknown qdisc, optlen=%u] ", RTA_PAYLOAD(opt));
	return 0;
}

static int parse_noqopt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
	if (argc) {
		fprintf(stderr, "Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
		return -1;
	}
	return 0;
}

static int print_nofopt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 fhandle)
{
	if (opt && RTA_PAYLOAD(opt))
		fprintf(f, "fh %08x [Unknown filter, optlen=%u] ", fhandle, RTA_PAYLOAD(opt));
	else if (fhandle)
		fprintf(f, "fh %08x ", fhandle);
	return 0;
}

static int parse_nofopt(struct filter_util *qu, char *fhandle, int argc, char **argv, struct nlmsghdr *n)
{
	__u32 handle;

	if (argc) {
		fprintf(stderr, "Unknown filter \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
		return -1;
	}
	if (fhandle) {
		struct tcmsg *t = NLMSG_DATA(n);
		if (get_u32(&handle, fhandle, 16)) {
			fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle);
			return -1;
		}
		t->tcm_handle = handle;
	}
	return 0;
}

#if 0
/* Builtin filter types */

static int f_parse_noopt(struct filter_util *qu, char *fhandle, int argc, char **argv, struct nlmsghdr *n)
{
	if (argc || fhandle) {
		fprintf(stderr, "Filter \"%s\" has no options.\n", qu->id);
		return -1;
	}
	return 0;
}
#endif

struct qdisc_util *get_qdisc_kind(char *str)
{
	void *dlh;
	char buf[256];
	struct qdisc_util *q;

	for (q = qdisc_list; q; q = q->next)
		if (strcmp(q->id, str) == 0)
			return q;

	snprintf(buf, sizeof(buf), "q_%s.so", str);
	dlh = dlopen(buf, RTLD_LAZY);
	if (dlh == NULL) {
		dlh = BODY;
		if (dlh == NULL) {
			dlh = BODY = dlopen(NULL, RTLD_LAZY);
			if (dlh == NULL)
				goto noexist;
		}
	}

	snprintf(buf, sizeof(buf), "%s_util", str);
	q = dlsym(dlh, buf);
	if (q == NULL)
		goto noexist;

reg:
	q->next = qdisc_list;
	qdisc_list = q;
	return q;

noexist:
	q = malloc(sizeof(*q));
	if (q) {
		memset(q, 0, sizeof(*q));
		strncpy(q->id, str, 15);
		q->parse_qopt = parse_noqopt;
		q->print_qopt = print_noqopt;
		goto reg;
	}
	return q;
}


struct filter_util *get_filter_kind(char *str)
{
	void *dlh;
	char buf[256];
	struct filter_util *q;

	for (q = filter_list; q; q = q->next)
		if (strcmp(q->id, str) == 0)
			return q;

	snprintf(buf, sizeof(buf), "f_%s.so", str);
	dlh = dlopen(buf, RTLD_LAZY);
	if (dlh == NULL) {
		dlh = BODY;
		if (dlh == NULL) {
			dlh = BODY = dlopen(NULL, RTLD_LAZY);
			if (dlh == NULL)
				goto noexist;
		}
	}

	snprintf(buf, sizeof(buf), "%s_util", str);
	q = dlsym(dlh, buf);
	if (q == NULL)
		goto noexist;

reg:
	q->next = filter_list;
	filter_list = q;
	return q;

noexist:
	q = malloc(sizeof(*q));
	if (q) {
		memset(q, 0, sizeof(*q));
		strncpy(q->id, str, 15);
		q->parse_fopt = parse_nofopt;
		q->print_fopt = print_nofopt;
		goto reg;
	}
	return q;
}

static void usage(void) __attribute__((noreturn));

static void usage(void)
{
	fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n"
	                "where  OBJECT := { qdisc | class | filter }\n"
	                "       OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -b[atch] file }\n");
	exit(-1);
}


int main(int argc, char **argv)
{
	char *basename;

	basename = strrchr(argv[0], '/');
	if (basename == NULL)
		basename = argv[0];
	else
		basename++;
	

	/* batch mode */
	if (argc > 1 && matches(argv[1], "-batch") == 0) {
		FILE *batch;
		char line[400];
		char *largv[100];
		int largc, ret=0;
#define	BMAXARG	(sizeof(largv)/sizeof(char *)-2)

		if (argc != 3) {
			fprintf(stderr, "Wrong number of arguments in batch mode\n");
			exit(-1);
		}
		if (matches(argv[2], "-") != 0) {
			if ((batch = fopen(argv[2], "r")) == NULL) {
				fprintf(stderr, "Cannot open file \"%s\" for reading: %s=n", argv[2], strerror(errno));
				exit(-1);
			}
		} else {
			if ((batch = fdopen(0, "r")) == NULL) {
				fprintf(stderr, "Cannot open stdin for reading: %s=n", strerror(errno));
				exit(-1);
			}
		}

		tc_core_init();

		while (fgets(line, sizeof(line)-1, batch)) {
			if (line[strlen(line)-1]=='\n') {
				line[strlen(line)-1] = '\0';
			} else {
				fprintf(stderr, "No newline at the end of line, looks like to long (%d chars or more)\n", strlen(line));
				exit(-1);
			}
			largc = 0;
			largv[largc]=strtok(line, " ");
			while ((largv[++largc]=strtok(NULL, " ")) != NULL) {
				if (largc > BMAXARG) {
					fprintf(stderr, "Over %d arguments in batch mode, enough!\n", BMAXARG);
					exit(-1);
				}
			}

			if (matches(largv[0], "qdisc") == 0) {
				ret += do_qdisc(largc-1, largv+1);
			} else if (matches(largv[0], "class") == 0) {
				ret += do_class(largc-1, largv+1);
			} else if (matches(largv[0], "filter") == 0) {
				ret += do_filter(largc-1, largv+1);
			} else if (matches(largv[0], "help") == 0) {
				usage();	/* note that usage() doesn't return */
			} else {
				fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", largv[1]);
				exit(-1);
			}
		}
		fclose(batch);
		exit(0); /* end of batch, that's all */
	}

	while (argc > 1) {
		if (argv[1][0] != '-')
			break;
		if (matches(argv[1], "-stats") == 0 ||
		    matches(argv[1], "-statistics") == 0) {
			++show_stats;
		} else if (matches(argv[1], "-details") == 0) {
			++show_details;
		} else if (matches(argv[1], "-raw") == 0) {
			++show_raw;
		} else if (matches(argv[1], "-Version") == 0) {
			printf("tc utility, iproute2-ss%s\n", SNAPSHOT);
			exit(0);
		} else if (matches(argv[1], "-help") == 0) {
			usage();
		} else {
			fprintf(stderr, "Option \"%s\" is unknown, try \"tc -help\".\n", argv[1]);
			exit(-1);
		}
		argc--;	argv++;
	}

	tc_core_init();

	if (argc > 1) {
		if (matches(argv[1], "qdisc") == 0)
			return do_qdisc(argc-2, argv+2);
		if (matches(argv[1], "class") == 0)
			return do_class(argc-2, argv+2);
		if (matches(argv[1], "filter") == 0)
			return do_filter(argc-2, argv+2);
		if (matches(argv[1], "help") == 0)
			usage();
		fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", argv[1]);
		exit(-1);
	}

	usage();
}
Commit	Line	Data
aba5acdf SH	1	/*
	2	* tc.c "tc" utility frontend.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
	9	* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
	10	*
	11	* Fixes:
	12	*
	13	* Petri Mattila <petri@prihateam.fi> 990308: wrong memset's resulted in faults
	14	*/
	15
	16	#include <stdio.h>
	17	#include <stdlib.h>
	18	#include <unistd.h>
	19	#include <syslog.h>
	20	#include <fcntl.h>
	21	#include <dlfcn.h>
	22	#include <sys/socket.h>
	23	#include <netinet/in.h>
	24	#include <arpa/inet.h>
	25	#include <string.h>
	26	#include <errno.h>
	27
	28	#include "SNAPSHOT.h"
	29	#include "utils.h"
	30	#include "tc_util.h"
	31	#include "tc_common.h"
	32
	33	int show_stats = 0;
	34	int show_details = 0;
	35	int show_raw = 0;
	36	int resolve_hosts = 0;
	37
	38	void *BODY;
	39	static struct qdisc_util * qdisc_list;
	40	static struct filter_util * filter_list;
	41
	42	static int print_noqopt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	43	{
	44	if (opt && RTA_PAYLOAD(opt))
	45	fprintf(f, "[Unknown qdisc, optlen=%u] ", RTA_PAYLOAD(opt));
	46	return 0;
	47	}
	48
	49	static int parse_noqopt(struct qdisc_util qu, int argc, char argv, struct nlmsghdr n)
	50	{
	51	if (argc) {
	52	fprintf(stderr, "Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
	53	return -1;
	54	}
	55	return 0;
	56	}
	57
	58	static int print_nofopt(struct filter_util qu, FILE f, struct rtattr *opt, __u32 fhandle)
	59	{
	60	if (opt && RTA_PAYLOAD(opt))
	61	fprintf(f, "fh %08x [Unknown filter, optlen=%u] ", fhandle, RTA_PAYLOAD(opt));
	62	else if (fhandle)
	63	fprintf(f, "fh %08x ", fhandle);
	64	return 0;
65	}
66
67	static int parse_nofopt(struct filter_util qu, char fhandle, int argc, char *argv, struct nlmsghdr n)
68	{
69	__u32 handle;
70
71	if (argc) {
72	fprintf(stderr, "Unknown filter \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
73	return -1;
74	}
75	if (fhandle) {
76	struct tcmsg *t = NLMSG_DATA(n);
77	if (get_u32(&handle, fhandle, 16)) {
78	fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle);
79	return -1;
80	}
81	t->tcm_handle = handle;
82	}
83	return 0;
84	}
85
86	#if 0
87	/* Builtin filter types */
88
89	static int f_parse_noopt(struct filter_util qu, char fhandle, int argc, char *argv, struct nlmsghdr n)
90	{
91	if (argc \|\| fhandle) {
92	fprintf(stderr, "Filter \"%s\" has no options.\n", qu->id);
93	return -1;
94	}
95	return 0;
96	}
97	#endif
98
99	struct qdisc_util get_qdisc_kind(char str)
100	{
101	void *dlh;
102	char buf[256];
103	struct qdisc_util *q;
104
105	for (q = qdisc_list; q; q = q->next)
106	if (strcmp(q->id, str) == 0)
107	return q;
108
109	snprintf(buf, sizeof(buf), "q_%s.so", str);
110	dlh = dlopen(buf, RTLD_LAZY);
111	if (dlh == NULL) {
112	dlh = BODY;
113	if (dlh == NULL) {
114	dlh = BODY = dlopen(NULL, RTLD_LAZY);
115	if (dlh == NULL)
116	goto noexist;
117	}
118	}
119
120	snprintf(buf, sizeof(buf), "%s_util", str);
121	q = dlsym(dlh, buf);
122	if (q == NULL)
123	goto noexist;
124
125	reg:
126	q->next = qdisc_list;
127	qdisc_list = q;
128	return q;
129
130	noexist:
131	q = malloc(sizeof(*q));
132	if (q) {
133	memset(q, 0, sizeof(*q));
134	strncpy(q->id, str, 15);
135	q->parse_qopt = parse_noqopt;
136	q->print_qopt = print_noqopt;
137	goto reg;
138	}
139	return q;
140	}
141
142
143	struct filter_util get_filter_kind(char str)
144	{
145	void *dlh;
146	char buf[256];
147	struct filter_util *q;
148
149	for (q = filter_list; q; q = q->next)
150	if (strcmp(q->id, str) == 0)
151	return q;
152
153	snprintf(buf, sizeof(buf), "f_%s.so", str);
154	dlh = dlopen(buf, RTLD_LAZY);
155	if (dlh == NULL) {
156	dlh = BODY;
157	if (dlh == NULL) {
158	dlh = BODY = dlopen(NULL, RTLD_LAZY);
159	if (dlh == NULL)
160	goto noexist;
161	}
162	}
163
164	snprintf(buf, sizeof(buf), "%s_util", str);
165	q = dlsym(dlh, buf);
166	if (q == NULL)
167	goto noexist;
168
169	reg:
170	q->next = filter_list;
171	filter_list = q;
172	return q;
173
174	noexist:
175	q = malloc(sizeof(*q));
176	if (q) {
177	memset(q, 0, sizeof(*q));
178	strncpy(q->id, str, 15);
179	q->parse_fopt = parse_nofopt;
180	q->print_fopt = print_nofopt;
181	goto reg;
182	}
183	return q;
184	}
185
186	static void usage(void) __attribute__((noreturn));
187
188	static void usage(void)
189	{
190	fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND \| help }\n"
191	"where OBJECT := { qdisc \| class \| filter }\n"
192	" OPTIONS := { -s[tatistics] \| -d[etails] \| -r[aw] \| -b[atch] file }\n");
193	exit(-1);
194	}
195
196
197
198	int main(int argc, char **argv)
199	{
200	char *basename;
201
202	basename = strrchr(argv[0], '/');
203	if (basename == NULL)
204	basename = argv[0];
205	else
206	basename++;
207
208
209	/* batch mode */
210	if (argc > 1 && matches(argv[1], "-batch") == 0) {
211	FILE *batch;
212	char line[400];
213	char *largv[100];
214	int largc, ret=0;
215	#define BMAXARG (sizeof(largv)/sizeof(char *)-2)
216
217	if (argc != 3) {
218	fprintf(stderr, "Wrong number of arguments in batch mode\n");
219	exit(-1);
220	}
221	if (matches(argv[2], "-") != 0) {
222	if ((batch = fopen(argv[2], "r")) == NULL) {
223	fprintf(stderr, "Cannot open file \"%s\" for reading: %s=n", argv[2], strerror(errno));
224	exit(-1);
225	}
226	} else {
227	if ((batch = fdopen(0, "r")) == NULL) {
228	fprintf(stderr, "Cannot open stdin for reading: %s=n", strerror(errno));
229	exit(-1);
230	}
231	}
232
233	tc_core_init();
234
235	while (fgets(line, sizeof(line)-1, batch)) {
236	if (line[strlen(line)-1]=='\n') {
237	line[strlen(line)-1] = '\0';
238	} else {
239	fprintf(stderr, "No newline at the end of line, looks like to long (%d chars or more)\n", strlen(line));
240	exit(-1);
241	}
242	largc = 0;
243	largv[largc]=strtok(line, " ");
244	while ((largv[++largc]=strtok(NULL, " ")) != NULL) {
245	if (largc > BMAXARG) {
246	fprintf(stderr, "Over %d arguments in batch mode, enough!\n", BMAXARG);
247	exit(-1);
248	}
249	}
250
251	if (matches(largv[0], "qdisc") == 0) {
252	ret += do_qdisc(largc-1, largv+1);
253	} else if (matches(largv[0], "class") == 0) {
254	ret += do_class(largc-1, largv+1);
255	} else if (matches(largv[0], "filter") == 0) {
256	ret += do_filter(largc-1, largv+1);
257	} else if (matches(largv[0], "help") == 0) {
258	usage(); /* note that usage() doesn't return */
259	} else {
260	fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", largv[1]);
261	exit(-1);
262	}
263	}
264	fclose(batch);
265	exit(0); /* end of batch, that's all */
266	}
267
268	while (argc > 1) {
269	if (argv[1][0] != '-')
270	break;
271	if (matches(argv[1], "-stats") == 0 \|\|
272	matches(argv[1], "-statistics") == 0) {
273	++show_stats;
274	} else if (matches(argv[1], "-details") == 0) {
275	++show_details;
276	} else if (matches(argv[1], "-raw") == 0) {
277	++show_raw;
278	} else if (matches(argv[1], "-Version") == 0) {
279	printf("tc utility, iproute2-ss%s\n", SNAPSHOT);
280	exit(0);
281	} else if (matches(argv[1], "-help") == 0) {
282	usage();
283	} else {
284	fprintf(stderr, "Option \"%s\" is unknown, try \"tc -help\".\n", argv[1]);
285	exit(-1);
286	}
287	argc--; argv++;
288	}
289
290	tc_core_init();
291
292	if (argc > 1) {
293	if (matches(argv[1], "qdisc") == 0)
294	return do_qdisc(argc-2, argv+2);
295	if (matches(argv[1], "class") == 0)
296	return do_class(argc-2, argv+2);
297	if (matches(argv[1], "filter") == 0)
298	return do_filter(argc-2, argv+2);
299	if (matches(argv[1], "help") == 0)
300	usage();
301	fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", argv[1]);
302	exit(-1);
303	}
304
305	usage();
306	}