Adding upstream version 6.1.0.upstream/6.1.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 380 insertions, 0 deletions

diff --git a/misc/lnstat.c b/misc/lnstat.c
new file mode 100644
index 0000000..c3293a8
--- /dev/null
+++ b/misc/lnstat.c
@@ -0,0 +1,380 @@
+/* lnstat - Unified linux network statistics
+ *
+ * Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org>
+ *
+ * Development of this code was funded by Astaro AG, http://www.astaro.com/
+ *
+ * Based on original concept and ideas from predecessor rtstat.c:
+ *
+ * Copyright 2001 by Robert Olsson <robert.olsson@its.uu.se>
+ *                                 Uppsala University, Sweden
+ *
+ * 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.
+ *
+ */
+
+/* Maximum number of fields that can be displayed */
+#define MAX_FIELDS		128
+
+/* Maximum number of header lines */
+#define HDR_LINES		10
+
+/* default field width if none specified */
+#define FIELD_WIDTH_DEFAULT	8
+#define FIELD_WIDTH_MAX		20
+
+#define DEFAULT_INTERVAL	2
+
+#define HDR_LINE_LENGTH		(MAX_FIELDS*FIELD_WIDTH_MAX)
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+
+#include <json_writer.h>
+#include "lnstat.h"
+#include "version.h"
+
+static struct option opts[] = {
+	{ "version", 0, NULL, 'V' },
+	{ "count", 1, NULL, 'c' },
+	{ "dump", 0, NULL, 'd' },
+	{ "json", 0, NULL, 'j' },
+	{ "file", 1, NULL, 'f' },
+	{ "help", 0, NULL, 'h' },
+	{ "interval", 1, NULL, 'i' },
+	{ "keys", 1, NULL, 'k' },
+	{ "subject", 1, NULL, 's' },
+	{ "width", 1, NULL, 'w' },
+	{ "oneline", 0, NULL, 0 },
+};
+
+static int usage(char *name, int exit_code)
+{
+	fprintf(stderr,
+		"%s Version %s\n"
+		"Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org>\n"
+		"This program is free software licensed under GNU GPLv2\nwith ABSOLUTELY NO WARRANTY.\n"
+		"\n"
+		"Parameters:\n"
+		"	-V --version		Print Version of Program\n"
+		"	-c --count <count>	"
+		"Print <count> number of intervals\n"
+		"	-d --dump		"
+		"Dump list of available files/keys\n"
+		"	-j --json		"
+		"Display in JSON format\n"
+		"	-f --file <file>	Statistics file to use\n"
+		"	-h --help		This help message\n"
+		"	-i --interval <intv>	"
+		"Set interval to 'intv' seconds\n"
+		"	-k --keys k,k,k,...	Display only keys specified\n"
+		"	-s --subject [0-2]	Control header printing:\n"
+		"				0 = never\n"
+		"				1 = once\n"
+		"				2 = every 20 lines (default))\n"
+		"	-w --width n,n,n,...	Width for each field\n"
+		"\n",
+		name, version);
+
+	exit(exit_code);
+}
+
+struct field_param {
+	const char *name;
+	struct lnstat_field *lf;
+	struct {
+		unsigned int width;
+	} print;
+};
+
+struct field_params {
+	unsigned int num;
+	struct field_param params[MAX_FIELDS];
+};
+
+static void print_line(FILE *of, const struct lnstat_file *lnstat_files,
+		       const struct field_params *fp)
+{
+	int i;
+
+	for (i = 0; i < fp->num; i++) {
+		const struct lnstat_field *lf = fp->params[i].lf;
+
+		fprintf(of, "%*lu|", fp->params[i].print.width, lf->result);
+	}
+	fputc('\n', of);
+}
+
+static void print_json(FILE *of, const struct lnstat_file *lnstat_files,
+		       const struct field_params *fp)
+{
+	json_writer_t *jw = jsonw_new(of);
+	int i;
+
+	jsonw_start_object(jw);
+	for (i = 0; i < fp->num; i++) {
+		const struct lnstat_field *lf = fp->params[i].lf;
+
+		jsonw_uint_field(jw, lf->name, lf->result);
+	}
+	jsonw_end_object(jw);
+	jsonw_destroy(&jw);
+}
+
+/* find lnstat_field according to user specification */
+static int map_field_params(struct lnstat_file *lnstat_files,
+			    struct field_params *fps, int interval)
+{
+	int i, j = 0;
+	struct lnstat_file *lf;
+
+	/* no field specification on commandline, need to build default */
+	if (!fps->num) {
+		for (lf = lnstat_files; lf; lf = lf->next) {
+			for (i = 0; i < lf->num_fields; i++) {
+				fps->params[j].lf = &lf->fields[i];
+				fps->params[j].lf->file->interval.tv_sec =
+								interval;
+				if (!fps->params[j].print.width)
+					fps->params[j].print.width =
+							FIELD_WIDTH_DEFAULT;
+
+				if (++j >= MAX_FIELDS - 1) {
+					fprintf(stderr,
+						"WARN: MAX_FIELDS (%d) reached, truncating number of keys\n",
+						MAX_FIELDS);
+					goto full;
+				}
+			}
+		}
+full:
+		fps->num = j;
+		return 1;
+	}
+
+	for (i = 0; i < fps->num; i++) {
+		fps->params[i].lf = lnstat_find_field(lnstat_files,
+						      fps->params[i].name);
+		if (!fps->params[i].lf) {
+			fprintf(stderr, "Field `%s' unknown\n",
+				fps->params[i].name);
+			return 0;
+		}
+		fps->params[i].lf->file->interval.tv_sec = interval;
+		if (!fps->params[i].print.width)
+			fps->params[i].print.width = FIELD_WIDTH_DEFAULT;
+	}
+	return 1;
+}
+
+struct table_hdr {
+	int num_lines;
+	char *hdr[HDR_LINES];
+};
+
+static struct table_hdr *build_hdr_string(struct lnstat_file *lnstat_files,
+					  struct field_params *fps,
+					  int linewidth)
+{
+	int h, i;
+	static struct table_hdr th;
+	int ofs = 0;
+
+	for (i = 0; i < HDR_LINES; i++)
+		th.hdr[i] = calloc(1, HDR_LINE_LENGTH);
+
+	for (i = 0; i < fps->num; i++) {
+		char *cname, *fname = fps->params[i].lf->name;
+		unsigned int width = fps->params[i].print.width;
+
+		snprintf(th.hdr[0]+ofs, width+2, "%*.*s|", width, width,
+			 fps->params[i].lf->file->basename);
+
+		cname = fname;
+		for (h = 1; h < HDR_LINES; h++) {
+			if (cname - fname >= strlen(fname))
+				snprintf(th.hdr[h]+ofs, width+2,
+					 "%*.*s|", width, width, "");
+			else {
+				th.num_lines = h+1;
+				snprintf(th.hdr[h]+ofs, width+2,
+					 "%*.*s|", width, width, cname);
+			}
+			cname += width;
+		}
+		ofs += width+1;
+	}
+
+	/* fill in spaces */
+	for (h = 1; h < th.num_lines; h++) {
+		for (i = 0; i < ofs; i++) {
+			if (th.hdr[h][i] == '\0')
+				th.hdr[h][i] = ' ';
+		}
+	}
+
+	return &th;
+}
+
+static int print_hdr(FILE *of, struct table_hdr *th)
+{
+	int i;
+
+	for (i = 0; i < th->num_lines; i++) {
+		fputs(th->hdr[i], of);
+		fputc('\n', of);
+	}
+	return 0;
+}
+
+
+int main(int argc, char **argv)
+{
+	struct lnstat_file *lnstat_files;
+	const char *basename;
+	int i, c;
+	int interval = DEFAULT_INTERVAL;
+	int hdr = 2;
+	enum {
+		MODE_DUMP,
+		MODE_JSON,
+		MODE_NORMAL,
+	} mode = MODE_NORMAL;
+	unsigned long count = 0;
+	struct table_hdr *header;
+	static struct field_params fp;
+	int num_req_files = 0;
+	char *req_files[LNSTAT_MAX_FILES];
+
+	/* backwards compatibility mode for old tools */
+	basename = strrchr(argv[0], '/');
+	if (basename)
+		basename += 1;	  /* name after slash */
+	else
+		basename = argv[0]; /* no slash */
+
+	if (!strcmp(basename, "rtstat")) {
+		/* rtstat compatibility mode */
+		req_files[0] = "rt_cache";
+		num_req_files = 1;
+	} else if (!strcmp(basename, "ctstat")) {
+		/* ctstat compatibility mode */
+		req_files[0] = "ip_conntrack";
+		num_req_files = 1;
+	}
+
+	while ((c = getopt_long(argc, argv, "Vc:djpf:h?i:k:s:w:",
+				opts, NULL)) != -1) {
+		int len = 0;
+		char *tmp, *tok;
+
+		switch (c) {
+		case 'c':
+			count = strtoul(optarg, NULL, 0);
+			break;
+		case 'd':
+			mode = MODE_DUMP;
+			break;
+		case 'j':
+			mode = MODE_JSON;
+			break;
+		case 'f':
+			req_files[num_req_files++] = strdup(optarg);
+			break;
+		case '?':
+		case 'h':
+			usage(argv[0], 0);
+			break;
+		case 'i':
+			sscanf(optarg, "%u", &interval);
+			break;
+		case 'k':
+			tmp = strdup(optarg);
+			if (!tmp)
+				break;
+			for (tok = strtok(tmp, ",");
+			     tok;
+			     tok = strtok(NULL, ",")) {
+				if (fp.num >= MAX_FIELDS) {
+					fprintf(stderr,
+						"WARN: too many keys requested: (%d max)\n",
+						MAX_FIELDS);
+					break;
+				}
+				fp.params[fp.num++].name = tok;
+			}
+			break;
+		case 's':
+			sscanf(optarg, "%u", &hdr);
+			break;
+		case 'w':
+			tmp = strdup(optarg);
+			if (!tmp)
+				break;
+			i = 0;
+			for (tok = strtok(tmp, ",");
+			     tok;
+			     tok = strtok(NULL, ",")) {
+				len  = strtoul(tok, NULL, 0);
+				if (len > FIELD_WIDTH_MAX)
+					len = FIELD_WIDTH_MAX;
+				fp.params[i].print.width = len;
+				i++;
+			}
+			if (i == 1) {
+				for (i = 0; i < MAX_FIELDS; i++)
+					fp.params[i].print.width = len;
+			}
+			free(tmp);
+			break;
+		default:
+			usage(argv[0], 1);
+			break;
+		}
+	}
+
+	lnstat_files = lnstat_scan_dir(PROC_NET_STAT, num_req_files,
+				       (const char **) req_files);
+
+	switch (mode) {
+	case MODE_DUMP:
+		lnstat_dump(stdout, lnstat_files);
+		break;
+
+	case MODE_NORMAL:
+	case MODE_JSON:
+		if (!map_field_params(lnstat_files, &fp, interval))
+			exit(1);
+
+		header = build_hdr_string(lnstat_files, &fp, 80);
+		if (!header)
+			exit(1);
+
+		if (interval < 1)
+			interval = 1;
+
+		for (i = 0; i < count || !count; i++) {
+			lnstat_update(lnstat_files);
+			if (mode == MODE_JSON)
+				print_json(stdout, lnstat_files, &fp);
+			else {
+				if  ((hdr > 1 && !(i % 20)) ||
+				     (hdr == 1 && i == 0))
+					print_hdr(stdout, header);
+				print_line(stdout, lnstat_files, &fp);
+			}
+			fflush(stdout);
+			if (i < count - 1 || !count)
+				sleep(interval);
+		}
+		break;
+	}
+
+	return 1;
+}