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Commit | Line | Data |
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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; | |
3ea2bf45 | 37 | int use_iec = 0; |
044ebf35 SH |
38 | struct rtnl_handle g_rth; |
39 | int is_batch_mode = 0; | |
aba5acdf | 40 | |
b7a45150 | 41 | static void *BODY; /* cached handle dlopen(NULL) */ |
aba5acdf SH |
42 | static struct qdisc_util * qdisc_list; |
43 | static struct filter_util * filter_list; | |
44 | ||
1798c9d5 SH |
45 | static int print_noqopt(struct qdisc_util *qu, FILE *f, |
46 | struct rtattr *opt) | |
aba5acdf SH |
47 | { |
48 | if (opt && RTA_PAYLOAD(opt)) | |
bb6a21a4 SH |
49 | fprintf(f, "[Unknown qdisc, optlen=%u] ", |
50 | (unsigned) RTA_PAYLOAD(opt)); | |
aba5acdf SH |
51 | return 0; |
52 | } | |
53 | ||
54 | static int parse_noqopt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) | |
55 | { | |
56 | if (argc) { | |
57 | fprintf(stderr, "Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv); | |
58 | return -1; | |
59 | } | |
60 | return 0; | |
61 | } | |
62 | ||
63 | static int print_nofopt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 fhandle) | |
64 | { | |
65 | if (opt && RTA_PAYLOAD(opt)) | |
bb6a21a4 SH |
66 | fprintf(f, "fh %08x [Unknown filter, optlen=%u] ", |
67 | fhandle, (unsigned) RTA_PAYLOAD(opt)); | |
aba5acdf SH |
68 | else if (fhandle) |
69 | fprintf(f, "fh %08x ", fhandle); | |
70 | return 0; | |
71 | } | |
72 | ||
73 | static int parse_nofopt(struct filter_util *qu, char *fhandle, int argc, char **argv, struct nlmsghdr *n) | |
74 | { | |
75 | __u32 handle; | |
76 | ||
77 | if (argc) { | |
78 | fprintf(stderr, "Unknown filter \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv); | |
79 | return -1; | |
80 | } | |
81 | if (fhandle) { | |
82 | struct tcmsg *t = NLMSG_DATA(n); | |
83 | if (get_u32(&handle, fhandle, 16)) { | |
84 | fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle); | |
85 | return -1; | |
86 | } | |
87 | t->tcm_handle = handle; | |
88 | } | |
89 | return 0; | |
90 | } | |
91 | ||
4094db72 | 92 | struct qdisc_util *get_qdisc_kind(const char *str) |
aba5acdf SH |
93 | { |
94 | void *dlh; | |
95 | char buf[256]; | |
96 | struct qdisc_util *q; | |
97 | ||
98 | for (q = qdisc_list; q; q = q->next) | |
99 | if (strcmp(q->id, str) == 0) | |
100 | return q; | |
101 | ||
b7a45150 | 102 | snprintf(buf, sizeof(buf), "/usr/lib/tc/q_%s.so", str); |
aba5acdf | 103 | dlh = dlopen(buf, RTLD_LAZY); |
b7a45150 SH |
104 | if (!dlh) { |
105 | /* look in current binary, only open once */ | |
aba5acdf SH |
106 | dlh = BODY; |
107 | if (dlh == NULL) { | |
108 | dlh = BODY = dlopen(NULL, RTLD_LAZY); | |
109 | if (dlh == NULL) | |
110 | goto noexist; | |
111 | } | |
112 | } | |
113 | ||
95812b56 | 114 | snprintf(buf, sizeof(buf), "%s_qdisc_util", str); |
aba5acdf SH |
115 | q = dlsym(dlh, buf); |
116 | if (q == NULL) | |
117 | goto noexist; | |
118 | ||
119 | reg: | |
120 | q->next = qdisc_list; | |
121 | qdisc_list = q; | |
122 | return q; | |
123 | ||
124 | noexist: | |
125 | q = malloc(sizeof(*q)); | |
126 | if (q) { | |
1798c9d5 | 127 | |
aba5acdf | 128 | memset(q, 0, sizeof(*q)); |
1798c9d5 | 129 | q->id = strcpy(malloc(strlen(str)+1), str); |
aba5acdf SH |
130 | q->parse_qopt = parse_noqopt; |
131 | q->print_qopt = print_noqopt; | |
132 | goto reg; | |
133 | } | |
134 | return q; | |
135 | } | |
136 | ||
137 | ||
4094db72 | 138 | struct filter_util *get_filter_kind(const char *str) |
aba5acdf SH |
139 | { |
140 | void *dlh; | |
141 | char buf[256]; | |
142 | struct filter_util *q; | |
143 | ||
144 | for (q = filter_list; q; q = q->next) | |
145 | if (strcmp(q->id, str) == 0) | |
146 | return q; | |
147 | ||
b7a45150 | 148 | snprintf(buf, sizeof(buf), "/usr/lib/tc/f_%s.so", str); |
aba5acdf SH |
149 | dlh = dlopen(buf, RTLD_LAZY); |
150 | if (dlh == NULL) { | |
151 | dlh = BODY; | |
152 | if (dlh == NULL) { | |
153 | dlh = BODY = dlopen(NULL, RTLD_LAZY); | |
154 | if (dlh == NULL) | |
155 | goto noexist; | |
156 | } | |
157 | } | |
158 | ||
95812b56 | 159 | snprintf(buf, sizeof(buf), "%s_filter_util", str); |
aba5acdf SH |
160 | q = dlsym(dlh, buf); |
161 | if (q == NULL) | |
162 | goto noexist; | |
163 | ||
164 | reg: | |
165 | q->next = filter_list; | |
166 | filter_list = q; | |
167 | return q; | |
aba5acdf SH |
168 | noexist: |
169 | q = malloc(sizeof(*q)); | |
170 | if (q) { | |
171 | memset(q, 0, sizeof(*q)); | |
172 | strncpy(q->id, str, 15); | |
173 | q->parse_fopt = parse_nofopt; | |
174 | q->print_fopt = print_nofopt; | |
175 | goto reg; | |
176 | } | |
177 | return q; | |
178 | } | |
179 | ||
044ebf35 | 180 | static int usage(void) |
aba5acdf SH |
181 | { |
182 | fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n" | |
2373fde9 | 183 | "where OBJECT := { qdisc | class | filter | action }\n" |
aba5acdf | 184 | " OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -b[atch] file }\n"); |
044ebf35 | 185 | return -1; |
aba5acdf SH |
186 | } |
187 | ||
188 | ||
189 | ||
190 | int main(int argc, char **argv) | |
191 | { | |
192 | char *basename; | |
193 | ||
194 | basename = strrchr(argv[0], '/'); | |
195 | if (basename == NULL) | |
196 | basename = argv[0]; | |
197 | else | |
198 | basename++; | |
199 | ||
200 | ||
201 | /* batch mode */ | |
202 | if (argc > 1 && matches(argv[1], "-batch") == 0) { | |
203 | FILE *batch; | |
204 | char line[400]; | |
205 | char *largv[100]; | |
206 | int largc, ret=0; | |
207 | #define BMAXARG (sizeof(largv)/sizeof(char *)-2) | |
208 | ||
209 | if (argc != 3) { | |
210 | fprintf(stderr, "Wrong number of arguments in batch mode\n"); | |
044ebf35 | 211 | return -1; |
aba5acdf SH |
212 | } |
213 | if (matches(argv[2], "-") != 0) { | |
214 | if ((batch = fopen(argv[2], "r")) == NULL) { | |
215 | fprintf(stderr, "Cannot open file \"%s\" for reading: %s=n", argv[2], strerror(errno)); | |
044ebf35 | 216 | return -1; |
aba5acdf SH |
217 | } |
218 | } else { | |
219 | if ((batch = fdopen(0, "r")) == NULL) { | |
220 | fprintf(stderr, "Cannot open stdin for reading: %s=n", strerror(errno)); | |
044ebf35 | 221 | return -1; |
aba5acdf SH |
222 | } |
223 | } | |
224 | ||
225 | tc_core_init(); | |
044ebf35 SH |
226 | is_batch_mode=1; |
227 | ||
228 | if (rtnl_open(&g_rth, 0) < 0) { | |
229 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
230 | return 1; | |
231 | } | |
aba5acdf SH |
232 | |
233 | while (fgets(line, sizeof(line)-1, batch)) { | |
234 | if (line[strlen(line)-1]=='\n') { | |
235 | line[strlen(line)-1] = '\0'; | |
236 | } else { | |
bb6a21a4 SH |
237 | fprintf(stderr, "No newline at the end of line, looks like to long (%d chars or more)\n", |
238 | (int) strlen(line)); | |
044ebf35 | 239 | return -1; |
aba5acdf SH |
240 | } |
241 | largc = 0; | |
242 | largv[largc]=strtok(line, " "); | |
044ebf35 SH |
243 | if (largv[largc]==NULL) |
244 | continue; | |
aba5acdf SH |
245 | while ((largv[++largc]=strtok(NULL, " ")) != NULL) { |
246 | if (largc > BMAXARG) { | |
bb6a21a4 SH |
247 | fprintf(stderr, "Over %d arguments in batch mode, enough!\n", |
248 | (int) BMAXARG); | |
044ebf35 | 249 | return -1; |
aba5acdf SH |
250 | } |
251 | } | |
252 | ||
044ebf35 SH |
253 | if (largv[0][0]=='#') |
254 | continue; | |
aba5acdf SH |
255 | if (matches(largv[0], "qdisc") == 0) { |
256 | ret += do_qdisc(largc-1, largv+1); | |
257 | } else if (matches(largv[0], "class") == 0) { | |
258 | ret += do_class(largc-1, largv+1); | |
259 | } else if (matches(largv[0], "filter") == 0) { | |
260 | ret += do_filter(largc-1, largv+1); | |
2373fde9 SH |
261 | } else if (matches(largv[0], "action") == 0) { |
262 | ret += do_action(largc-1, largv+1); | |
aba5acdf SH |
263 | } else if (matches(largv[0], "help") == 0) { |
264 | usage(); /* note that usage() doesn't return */ | |
265 | } else { | |
266 | fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", largv[1]); | |
aba5acdf SH |
267 | } |
268 | } | |
269 | fclose(batch); | |
044ebf35 SH |
270 | rtnl_close(&g_rth); |
271 | return 0; /* end of batch, that's all */ | |
aba5acdf SH |
272 | } |
273 | ||
274 | while (argc > 1) { | |
275 | if (argv[1][0] != '-') | |
276 | break; | |
277 | if (matches(argv[1], "-stats") == 0 || | |
3ea2bf45 | 278 | matches(argv[1], "-statistics") == 0) { |
aba5acdf SH |
279 | ++show_stats; |
280 | } else if (matches(argv[1], "-details") == 0) { | |
281 | ++show_details; | |
282 | } else if (matches(argv[1], "-raw") == 0) { | |
283 | ++show_raw; | |
284 | } else if (matches(argv[1], "-Version") == 0) { | |
285 | printf("tc utility, iproute2-ss%s\n", SNAPSHOT); | |
044ebf35 | 286 | return 0; |
3ea2bf45 SH |
287 | } else if (matches(argv[1], "-iec") == 0) { |
288 | ++use_iec; | |
aba5acdf SH |
289 | } else if (matches(argv[1], "-help") == 0) { |
290 | usage(); | |
291 | } else { | |
292 | fprintf(stderr, "Option \"%s\" is unknown, try \"tc -help\".\n", argv[1]); | |
044ebf35 | 293 | return -1; |
aba5acdf SH |
294 | } |
295 | argc--; argv++; | |
296 | } | |
297 | ||
298 | tc_core_init(); | |
299 | ||
300 | if (argc > 1) { | |
301 | if (matches(argv[1], "qdisc") == 0) | |
302 | return do_qdisc(argc-2, argv+2); | |
303 | if (matches(argv[1], "class") == 0) | |
304 | return do_class(argc-2, argv+2); | |
305 | if (matches(argv[1], "filter") == 0) | |
306 | return do_filter(argc-2, argv+2); | |
2373fde9 SH |
307 | if (matches(argv[1], "actions") == 0) |
308 | return do_action(argc-2, argv+2); | |
aba5acdf SH |
309 | if (matches(argv[1], "help") == 0) |
310 | usage(); | |
311 | fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", argv[1]); | |
044ebf35 | 312 | return -1; |
aba5acdf SH |
313 | } |
314 | ||
315 | usage(); | |
044ebf35 | 316 | return 0; |
aba5acdf | 317 | } |