]>
Commit | Line | Data |
---|---|---|
0bb187ca SH |
1 | /* lnstat - Unified linux network statistics |
2 | * | |
3 | * Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org> | |
4 | * | |
5 | * Development of this code was funded by Astaro AG, http://www.astaro.com/ | |
6 | * | |
7 | * Based on original concept and ideas from predecessor rtstat.c: | |
8 | * | |
9 | * Copyright 2001 by Robert Olsson <robert.olsson@its.uu.se> | |
10 | * Uppsala University, Sweden | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | */ | |
18 | ||
19 | /* Maximum number of fields that can be displayed */ | |
f493dc30 | 20 | #define MAX_FIELDS 128 |
0bb187ca SH |
21 | |
22 | /* Maximum number of header lines */ | |
3d0b7439 | 23 | #define HDR_LINES 10 |
0bb187ca SH |
24 | |
25 | /* default field width if none specified */ | |
26 | #define FIELD_WIDTH_DEFAULT 8 | |
27 | #define FIELD_WIDTH_MAX 20 | |
28 | ||
29 | #define DEFAULT_INTERVAL 2 | |
30 | ||
31 | #define HDR_LINE_LENGTH (MAX_FIELDS*FIELD_WIDTH_MAX) | |
32 | ||
33 | #include <unistd.h> | |
34 | #include <stdio.h> | |
35 | #include <stdlib.h> | |
36 | #include <string.h> | |
37 | #include <getopt.h> | |
38 | ||
fcc16c22 | 39 | #include <json_writer.h> |
0bb187ca | 40 | #include "lnstat.h" |
d530608d | 41 | #include "version.h" |
0bb187ca SH |
42 | |
43 | static struct option opts[] = { | |
44 | { "version", 0, NULL, 'V' }, | |
45 | { "count", 1, NULL, 'c' }, | |
a4f9e8df SH |
46 | { "dump", 0, NULL, 'd' }, |
47 | { "json", 0, NULL, 'j' }, | |
0bb187ca SH |
48 | { "file", 1, NULL, 'f' }, |
49 | { "help", 0, NULL, 'h' }, | |
50 | { "interval", 1, NULL, 'i' }, | |
7e8bd80e | 51 | { "keys", 1, NULL, 'k' }, |
0bb187ca SH |
52 | { "subject", 1, NULL, 's' }, |
53 | { "width", 1, NULL, 'w' }, | |
fcc16c22 | 54 | { "oneline", 0, NULL, 0 }, |
0bb187ca SH |
55 | }; |
56 | ||
57 | static int usage(char *name, int exit_code) | |
58 | { | |
8589eb4e MC |
59 | fprintf(stderr, |
60 | "%s Version %s\n" | |
61 | "Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org>\n" | |
62 | "This program is free software licensed under GNU GPLv2\nwith ABSOLUTELY NO WARRANTY.\n" | |
63 | "\n" | |
64 | "Parameters:\n" | |
65 | " -V --version Print Version of Program\n" | |
66 | " -c --count <count> " | |
67 | "Print <count> number of intervals\n" | |
68 | " -d --dump " | |
69 | "Dump list of available files/keys\n" | |
70 | " -j --json " | |
71 | "Display in JSON format\n" | |
72 | " -f --file <file> Statistics file to use\n" | |
73 | " -h --help This help message\n" | |
74 | " -i --interval <intv> " | |
75 | "Set interval to 'intv' seconds\n" | |
76 | " -k --keys k,k,k,... Display only keys specified\n" | |
77 | " -s --subject [0-2] Control header printing:\n" | |
78 | " 0 = never\n" | |
79 | " 1 = once\n" | |
80 | " 2 = every 20 lines (default))\n" | |
81 | " -w --width n,n,n,... Width for each field\n" | |
82 | "\n", | |
d530608d | 83 | name, version); |
0bb187ca SH |
84 | |
85 | exit(exit_code); | |
86 | } | |
87 | ||
88 | struct field_param { | |
89 | const char *name; | |
90 | struct lnstat_field *lf; | |
91 | struct { | |
92 | unsigned int width; | |
93 | } print; | |
94 | }; | |
95 | ||
96 | struct field_params { | |
97 | unsigned int num; | |
98 | struct field_param params[MAX_FIELDS]; | |
99 | }; | |
100 | ||
101 | static void print_line(FILE *of, const struct lnstat_file *lnstat_files, | |
102 | const struct field_params *fp) | |
103 | { | |
104 | int i; | |
105 | ||
106 | for (i = 0; i < fp->num; i++) { | |
a4f9e8df | 107 | const struct lnstat_field *lf = fp->params[i].lf; |
0bb187ca | 108 | |
468dec75 | 109 | fprintf(of, "%*lu|", fp->params[i].print.width, lf->result); |
0bb187ca SH |
110 | } |
111 | fputc('\n', of); | |
112 | } | |
113 | ||
a4f9e8df SH |
114 | static void print_json(FILE *of, const struct lnstat_file *lnstat_files, |
115 | const struct field_params *fp) | |
116 | { | |
fcc16c22 | 117 | json_writer_t *jw = jsonw_new(of); |
a4f9e8df | 118 | int i; |
a4f9e8df | 119 | |
fcc16c22 | 120 | jsonw_start_object(jw); |
a4f9e8df SH |
121 | for (i = 0; i < fp->num; i++) { |
122 | const struct lnstat_field *lf = fp->params[i].lf; | |
3d0b7439 | 123 | |
fcc16c22 | 124 | jsonw_uint_field(jw, lf->name, lf->result); |
a4f9e8df | 125 | } |
fcc16c22 SH |
126 | jsonw_end_object(jw); |
127 | jsonw_destroy(&jw); | |
a4f9e8df SH |
128 | } |
129 | ||
0bb187ca SH |
130 | /* find lnstat_field according to user specification */ |
131 | static int map_field_params(struct lnstat_file *lnstat_files, | |
132 | struct field_params *fps, int interval) | |
133 | { | |
134 | int i, j = 0; | |
135 | struct lnstat_file *lf; | |
136 | ||
137 | /* no field specification on commandline, need to build default */ | |
138 | if (!fps->num) { | |
139 | for (lf = lnstat_files; lf; lf = lf->next) { | |
140 | for (i = 0; i < lf->num_fields; i++) { | |
141 | fps->params[j].lf = &lf->fields[i]; | |
142 | fps->params[j].lf->file->interval.tv_sec = | |
143 | interval; | |
144 | if (!fps->params[j].print.width) | |
ae665a52 | 145 | fps->params[j].print.width = |
0bb187ca | 146 | FIELD_WIDTH_DEFAULT; |
3d0b7439 | 147 | |
f309d0ae SH |
148 | if (++j >= MAX_FIELDS - 1) { |
149 | fprintf(stderr, | |
acd1e437 | 150 | "WARN: MAX_FIELDS (%d) reached, truncating number of keys\n", |
f309d0ae | 151 | MAX_FIELDS); |
f493dc30 | 152 | goto full; |
f309d0ae | 153 | } |
0bb187ca SH |
154 | } |
155 | } | |
acd1e437 | 156 | full: |
0bb187ca SH |
157 | fps->num = j; |
158 | return 1; | |
159 | } | |
160 | ||
161 | for (i = 0; i < fps->num; i++) { | |
162 | fps->params[i].lf = lnstat_find_field(lnstat_files, | |
163 | fps->params[i].name); | |
164 | if (!fps->params[i].lf) { | |
165 | fprintf(stderr, "Field `%s' unknown\n", | |
166 | fps->params[i].name); | |
167 | return 0; | |
168 | } | |
169 | fps->params[i].lf->file->interval.tv_sec = interval; | |
170 | if (!fps->params[i].print.width) | |
171 | fps->params[i].print.width = FIELD_WIDTH_DEFAULT; | |
172 | } | |
173 | return 1; | |
174 | } | |
175 | ||
176 | struct table_hdr { | |
177 | int num_lines; | |
178 | char *hdr[HDR_LINES]; | |
179 | }; | |
180 | ||
181 | static struct table_hdr *build_hdr_string(struct lnstat_file *lnstat_files, | |
182 | struct field_params *fps, | |
183 | int linewidth) | |
184 | { | |
acd1e437 | 185 | int h, i; |
0bb187ca SH |
186 | static struct table_hdr th; |
187 | int ofs = 0; | |
188 | ||
f89bb021 PS |
189 | for (i = 0; i < HDR_LINES; i++) |
190 | th.hdr[i] = calloc(1, HDR_LINE_LENGTH); | |
0bb187ca SH |
191 | |
192 | for (i = 0; i < fps->num; i++) { | |
193 | char *cname, *fname = fps->params[i].lf->name; | |
0bb187ca SH |
194 | unsigned int width = fps->params[i].print.width; |
195 | ||
468dec75 | 196 | snprintf(th.hdr[0]+ofs, width+2, "%*.*s|", width, width, |
0bb187ca SH |
197 | fps->params[i].lf->file->basename); |
198 | ||
199 | cname = fname; | |
200 | for (h = 1; h < HDR_LINES; h++) { | |
201 | if (cname - fname >= strlen(fname)) | |
468dec75 SH |
202 | snprintf(th.hdr[h]+ofs, width+2, |
203 | "%*.*s|", width, width, ""); | |
0bb187ca SH |
204 | else { |
205 | th.num_lines = h+1; | |
468dec75 SH |
206 | snprintf(th.hdr[h]+ofs, width+2, |
207 | "%*.*s|", width, width, cname); | |
0bb187ca SH |
208 | } |
209 | cname += width; | |
210 | } | |
211 | ofs += width+1; | |
212 | } | |
213 | /* fill in spaces */ | |
214 | for (h = 1; h <= th.num_lines; h++) { | |
215 | for (i = 0; i < ofs; i++) { | |
216 | if (th.hdr[h][i] == '\0') | |
217 | th.hdr[h][i] = ' '; | |
218 | } | |
219 | } | |
220 | ||
221 | return &th; | |
222 | } | |
223 | ||
224 | static int print_hdr(FILE *of, struct table_hdr *th) | |
225 | { | |
226 | int i; | |
227 | ||
228 | for (i = 0; i < th->num_lines; i++) { | |
229 | fputs(th->hdr[i], of); | |
230 | fputc('\n', of); | |
231 | } | |
232 | return 0; | |
233 | } | |
ae665a52 | 234 | |
0bb187ca SH |
235 | |
236 | int main(int argc, char **argv) | |
237 | { | |
238 | struct lnstat_file *lnstat_files; | |
239 | const char *basename; | |
a4f9e8df | 240 | int i, c; |
0bb187ca SH |
241 | int interval = DEFAULT_INTERVAL; |
242 | int hdr = 2; | |
243 | enum { | |
244 | MODE_DUMP, | |
a4f9e8df | 245 | MODE_JSON, |
0bb187ca SH |
246 | MODE_NORMAL, |
247 | } mode = MODE_NORMAL; | |
e7e2913f | 248 | unsigned long count = 0; |
a4f9e8df | 249 | struct table_hdr *header; |
0bb187ca SH |
250 | static struct field_params fp; |
251 | int num_req_files = 0; | |
252 | char *req_files[LNSTAT_MAX_FILES]; | |
ae665a52 | 253 | |
0bb187ca SH |
254 | /* backwards compatibility mode for old tools */ |
255 | basename = strrchr(argv[0], '/'); | |
ae665a52 | 256 | if (basename) |
0bb187ca SH |
257 | basename += 1; /* name after slash */ |
258 | else | |
259 | basename = argv[0]; /* no slash */ | |
260 | ||
261 | if (!strcmp(basename, "rtstat")) { | |
262 | /* rtstat compatibility mode */ | |
263 | req_files[0] = "rt_cache"; | |
264 | num_req_files = 1; | |
265 | } else if (!strcmp(basename, "ctstat")) { | |
266 | /* ctstat compatibility mode */ | |
267 | req_files[0] = "ip_conntrack"; | |
268 | num_req_files = 1; | |
269 | } | |
270 | ||
acd1e437 | 271 | while ((c = getopt_long(argc, argv, "Vc:djpf:h?i:k:s:w:", |
0bb187ca | 272 | opts, NULL)) != -1) { |
a4f9e8df | 273 | int len = 0; |
e796b958 SH |
274 | char *tmp, *tok; |
275 | ||
0bb187ca | 276 | switch (c) { |
a4f9e8df SH |
277 | case 'c': |
278 | count = strtoul(optarg, NULL, 0); | |
279 | break; | |
280 | case 'd': | |
281 | mode = MODE_DUMP; | |
282 | break; | |
283 | case 'j': | |
284 | mode = MODE_JSON; | |
285 | break; | |
286 | case 'f': | |
287 | req_files[num_req_files++] = strdup(optarg); | |
288 | break; | |
289 | case '?': | |
290 | case 'h': | |
291 | usage(argv[0], 0); | |
292 | break; | |
293 | case 'i': | |
294 | sscanf(optarg, "%u", &interval); | |
295 | break; | |
296 | case 'k': | |
297 | tmp = strdup(optarg); | |
298 | if (!tmp) | |
0bb187ca | 299 | break; |
a4f9e8df SH |
300 | for (tok = strtok(tmp, ","); |
301 | tok; | |
302 | tok = strtok(NULL, ",")) { | |
303 | if (fp.num >= MAX_FIELDS) { | |
3d0b7439 | 304 | fprintf(stderr, |
acd1e437 | 305 | "WARN: too many keys requested: (%d max)\n", |
a4f9e8df | 306 | MAX_FIELDS); |
0bb187ca | 307 | break; |
0bb187ca | 308 | } |
a4f9e8df SH |
309 | fp.params[fp.num++].name = tok; |
310 | } | |
311 | break; | |
312 | case 's': | |
313 | sscanf(optarg, "%u", &hdr); | |
314 | break; | |
315 | case 'w': | |
316 | tmp = strdup(optarg); | |
317 | if (!tmp) | |
0bb187ca | 318 | break; |
a4f9e8df SH |
319 | i = 0; |
320 | for (tok = strtok(tmp, ","); | |
321 | tok; | |
322 | tok = strtok(NULL, ",")) { | |
323 | len = strtoul(tok, NULL, 0); | |
324 | if (len > FIELD_WIDTH_MAX) | |
325 | len = FIELD_WIDTH_MAX; | |
326 | fp.params[i].print.width = len; | |
327 | i++; | |
328 | } | |
329 | if (i == 1) { | |
330 | for (i = 0; i < MAX_FIELDS; i++) | |
0bb187ca | 331 | fp.params[i].print.width = len; |
a4f9e8df SH |
332 | } |
333 | break; | |
334 | default: | |
335 | usage(argv[0], 1); | |
336 | break; | |
0bb187ca SH |
337 | } |
338 | } | |
339 | ||
340 | lnstat_files = lnstat_scan_dir(PROC_NET_STAT, num_req_files, | |
341 | (const char **) req_files); | |
342 | ||
343 | switch (mode) { | |
0bb187ca | 344 | case MODE_DUMP: |
b1410e0a | 345 | lnstat_dump(stdout, lnstat_files); |
0bb187ca | 346 | break; |
0bb187ca | 347 | |
a4f9e8df SH |
348 | case MODE_NORMAL: |
349 | case MODE_JSON: | |
0bb187ca SH |
350 | if (!map_field_params(lnstat_files, &fp, interval)) |
351 | exit(1); | |
ae665a52 | 352 | |
0bb187ca SH |
353 | header = build_hdr_string(lnstat_files, &fp, 80); |
354 | if (!header) | |
355 | exit(1); | |
356 | ||
acd1e437 | 357 | if (interval < 1) |
a4f9e8df | 358 | interval = 1; |
0bb187ca | 359 | |
fdb347f7 | 360 | for (i = 0; i < count || !count; i++) { |
0bb187ca | 361 | lnstat_update(lnstat_files); |
a4f9e8df SH |
362 | if (mode == MODE_JSON) |
363 | print_json(stdout, lnstat_files, &fp); | |
364 | else { | |
fdb347f7 PS |
365 | if ((hdr > 1 && !(i % 20)) || |
366 | (hdr == 1 && i == 0)) | |
a4f9e8df SH |
367 | print_hdr(stdout, header); |
368 | print_line(stdout, lnstat_files, &fp); | |
369 | } | |
f50332c5 | 370 | fflush(stdout); |
e7e2913f | 371 | if (i < count - 1 || !count) |
a4f9e8df | 372 | sleep(interval); |
0bb187ca | 373 | } |
a4f9e8df | 374 | break; |
0bb187ca SH |
375 | } |
376 | ||
377 | return 1; | |
378 | } |