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1062 lines
20 KiB
1062 lines
20 KiB
/* |
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* utils.c |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version |
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* 2 of the License, or (at your option) any later version. |
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* |
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
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* |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <unistd.h> |
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#include <syslog.h> |
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#include <fcntl.h> |
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#include <limits.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <string.h> |
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#include <netdb.h> |
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#include <arpa/inet.h> |
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#include <asm/types.h> |
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#include <linux/pkt_sched.h> |
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#include <linux/param.h> |
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#include <linux/if_arp.h> |
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#include <linux/mpls.h> |
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#include <time.h> |
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#include <sys/time.h> |
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#include <errno.h> |
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|
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#include "rt_names.h" |
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#include "utils.h" |
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#include "namespace.h" |
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|
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int timestamp_short = 0; |
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|
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int get_integer(int *val, const char *arg, int base) |
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{ |
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long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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|
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res = strtol(arg, &ptr, base); |
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|
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/* If there were no digits at all, strtol() stores |
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* the original value of nptr in *endptr (and returns 0). |
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* In particular, if *nptr is not '\0' but **endptr is '\0' on return, |
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* the entire string is valid. |
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*/ |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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|
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/* If an underflow occurs, strtol() returns LONG_MIN. |
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* If an overflow occurs, strtol() returns LONG_MAX. |
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* In both cases, errno is set to ERANGE. |
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*/ |
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if ((res == LONG_MAX || res == LONG_MIN) && errno == ERANGE) |
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return -1; |
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|
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/* Outside range of int */ |
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if (res < INT_MIN || res > INT_MAX) |
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return -1; |
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|
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*val = res; |
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return 0; |
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} |
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|
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int mask2bits(__u32 netmask) |
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{ |
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unsigned bits = 0; |
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__u32 mask = ntohl(netmask); |
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__u32 host = ~mask; |
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|
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/* a valid netmask must be 2^n - 1 */ |
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if ((host & (host + 1)) != 0) |
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return -1; |
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|
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for (; mask; mask <<= 1) |
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++bits; |
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return bits; |
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} |
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|
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static int get_netmask(unsigned *val, const char *arg, int base) |
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{ |
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inet_prefix addr; |
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|
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if (!get_unsigned(val, arg, base)) |
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return 0; |
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|
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/* try coverting dotted quad to CIDR */ |
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if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) { |
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int b = mask2bits(addr.data[0]); |
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|
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if (b >= 0) { |
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*val = b; |
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return 0; |
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} |
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} |
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|
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return -1; |
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} |
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int get_unsigned(unsigned *val, const char *arg, int base) |
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{ |
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unsigned long res; |
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char *ptr; |
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if (!arg || !*arg) |
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return -1; |
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|
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res = strtoul(arg, &ptr, base); |
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|
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/* empty string or trailing non-digits */ |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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|
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/* overflow */ |
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if (res == ULONG_MAX && errno == ERANGE) |
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return -1; |
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|
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/* out side range of unsigned */ |
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if (res > UINT_MAX) |
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return -1; |
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*val = res; |
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return 0; |
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} |
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|
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/* |
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* get_time_rtt is "translated" from a similar routine "get_time" in |
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* tc_util.c. We don't use the exact same routine because tc passes |
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* microseconds to the kernel and the callers of get_time_rtt want to |
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* pass milliseconds (standard unit for rtt values since 2.6.27), and |
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* have a different assumption for the units of a "raw" number. |
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*/ |
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int get_time_rtt(unsigned *val, const char *arg, int *raw) |
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{ |
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double t; |
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unsigned long res; |
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char *p; |
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|
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if (strchr(arg, '.') != NULL) { |
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t = strtod(arg, &p); |
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if (t < 0.0) |
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return -1; |
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|
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/* no digits? */ |
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if (!p || p == arg) |
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return -1; |
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|
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/* over/underflow */ |
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if ((t == HUGE_VALF || t == HUGE_VALL) && errno == ERANGE) |
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return -1; |
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} else { |
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res = strtoul(arg, &p, 0); |
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|
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/* empty string? */ |
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if (!p || p == arg) |
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return -1; |
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|
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/* overflow */ |
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if (res == ULONG_MAX && errno == ERANGE) |
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return -1; |
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t = (double)res; |
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} |
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if (p == arg) |
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return -1; |
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*raw = 1; |
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|
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if (*p) { |
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*raw = 0; |
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if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 || |
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strcasecmp(p, "secs")==0) |
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t *= 1000; |
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else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 || |
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strcasecmp(p, "msecs") == 0) |
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t *= 1.0; /* allow suffix, do nothing */ |
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else |
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return -1; |
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} |
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|
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/* emulate ceil() without having to bring-in -lm and always be >= 1 */ |
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*val = t; |
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if (*val < t) |
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*val += 1; |
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|
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return 0; |
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|
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} |
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|
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int get_u64(__u64 *val, const char *arg, int base) |
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{ |
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unsigned long long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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|
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res = strtoull(arg, &ptr, base); |
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|
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/* empty string or trailing non-digits */ |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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|
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/* overflow */ |
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if (res == ULLONG_MAX && errno == ERANGE) |
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return -1; |
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|
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/* in case ULL is 128 bits */ |
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if (res > 0xFFFFFFFFFFFFFFFFULL) |
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return -1; |
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|
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*val = res; |
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return 0; |
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} |
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|
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int get_u32(__u32 *val, const char *arg, int base) |
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{ |
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unsigned long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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res = strtoul(arg, &ptr, base); |
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|
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/* empty string or trailing non-digits */ |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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/* overflow */ |
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if (res == ULONG_MAX && errno == ERANGE) |
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return -1; |
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|
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/* in case UL > 32 bits */ |
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if (res > 0xFFFFFFFFUL) |
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return -1; |
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*val = res; |
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return 0; |
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} |
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|
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int get_u16(__u16 *val, const char *arg, int base) |
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{ |
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unsigned long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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res = strtoul(arg, &ptr, base); |
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|
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/* empty string or trailing non-digits */ |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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|
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/* overflow */ |
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if (res == ULONG_MAX && errno == ERANGE) |
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return -1; |
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|
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if (res > 0xFFFFUL) |
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return -1; |
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*val = res; |
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return 0; |
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} |
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|
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int get_u8(__u8 *val, const char *arg, int base) |
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{ |
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unsigned long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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|
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res = strtoul(arg, &ptr, base); |
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/* empty string or trailing non-digits */ |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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|
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/* overflow */ |
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if (res == ULONG_MAX && errno == ERANGE) |
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return -1; |
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|
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if (res > 0xFFUL) |
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return -1; |
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|
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*val = res; |
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return 0; |
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} |
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|
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int get_s32(__s32 *val, const char *arg, int base) |
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{ |
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long res; |
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char *ptr; |
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|
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errno = 0; |
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|
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if (!arg || !*arg) |
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return -1; |
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res = strtol(arg, &ptr, base); |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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if ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) |
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return -1; |
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if (res > INT32_MAX || res < INT32_MIN) |
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return -1; |
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|
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*val = res; |
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return 0; |
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} |
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|
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int get_s16(__s16 *val, const char *arg, int base) |
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{ |
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long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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res = strtol(arg, &ptr, base); |
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if (!ptr || ptr == arg || *ptr) |
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return -1; |
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if ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) |
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return -1; |
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if (res > 0x7FFF || res < -0x8000) |
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return -1; |
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|
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*val = res; |
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return 0; |
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} |
|
|
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int get_s8(__s8 *val, const char *arg, int base) |
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{ |
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long res; |
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char *ptr; |
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|
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if (!arg || !*arg) |
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return -1; |
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res = strtol(arg, &ptr, base); |
|
if (!ptr || ptr == arg || *ptr) |
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return -1; |
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if ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) |
|
return -1; |
|
if (res > 0x7F || res < -0x80) |
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return -1; |
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*val = res; |
|
return 0; |
|
} |
|
|
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/* This uses a non-standard parsing (ie not inet_aton, or inet_pton) |
|
* because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8 |
|
*/ |
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static int get_addr_ipv4(__u8 *ap, const char *cp) |
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{ |
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int i; |
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|
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for (i = 0; i < 4; i++) { |
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unsigned long n; |
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char *endp; |
|
|
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n = strtoul(cp, &endp, 0); |
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if (n > 255) |
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return -1; /* bogus network value */ |
|
|
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if (endp == cp) /* no digits */ |
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return -1; |
|
|
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ap[i] = n; |
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|
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if (*endp == '\0') |
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break; |
|
|
|
if (i == 3 || *endp != '.') |
|
return -1; /* extra characters */ |
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cp = endp + 1; |
|
} |
|
|
|
return 1; |
|
} |
|
|
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int get_addr64(__u64 *ap, const char *cp) |
|
{ |
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int i; |
|
|
|
union { |
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__u16 v16[4]; |
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__u64 v64; |
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} val; |
|
|
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for (i = 0; i < 4; i++) { |
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unsigned long n; |
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char *endp; |
|
|
|
n = strtoul(cp, &endp, 16); |
|
if (n > 0xffff) |
|
return -1; /* bogus network value */ |
|
|
|
if (endp == cp) /* no digits */ |
|
return -1; |
|
|
|
val.v16[i] = htons(n); |
|
|
|
if (*endp == '\0') |
|
break; |
|
|
|
if (i == 3 || *endp != ':') |
|
return -1; /* extra characters */ |
|
cp = endp + 1; |
|
} |
|
|
|
*ap = val.v64; |
|
|
|
return 1; |
|
} |
|
|
|
int get_addr_1(inet_prefix *addr, const char *name, int family) |
|
{ |
|
memset(addr, 0, sizeof(*addr)); |
|
|
|
if (strcmp(name, "default") == 0 || |
|
strcmp(name, "all") == 0 || |
|
strcmp(name, "any") == 0) { |
|
if ((family == AF_DECnet) || (family == AF_MPLS)) |
|
return -1; |
|
addr->family = family; |
|
addr->bytelen = (family == AF_INET6 ? 16 : 4); |
|
addr->bitlen = -1; |
|
return 0; |
|
} |
|
|
|
if (family == AF_PACKET) { |
|
int len; |
|
len = ll_addr_a2n((char *)&addr->data, sizeof(addr->data), name); |
|
if (len < 0) |
|
return -1; |
|
|
|
addr->family = AF_PACKET; |
|
addr->bytelen = len; |
|
addr->bitlen = len * 8; |
|
return 0; |
|
} |
|
|
|
if (strchr(name, ':')) { |
|
addr->family = AF_INET6; |
|
if (family != AF_UNSPEC && family != AF_INET6) |
|
return -1; |
|
if (inet_pton(AF_INET6, name, addr->data) <= 0) |
|
return -1; |
|
addr->bytelen = 16; |
|
addr->bitlen = -1; |
|
return 0; |
|
} |
|
|
|
#ifndef ANDROID |
|
if (family == AF_DECnet) { |
|
struct dn_naddr dna; |
|
addr->family = AF_DECnet; |
|
if (dnet_pton(AF_DECnet, name, &dna) <= 0) |
|
return -1; |
|
memcpy(addr->data, dna.a_addr, 2); |
|
addr->bytelen = 2; |
|
addr->bitlen = -1; |
|
return 0; |
|
} |
|
#endif |
|
|
|
if (family == AF_MPLS) { |
|
int i; |
|
addr->family = AF_MPLS; |
|
if (mpls_pton(AF_MPLS, name, addr->data) <= 0) |
|
return -1; |
|
addr->bytelen = 4; |
|
addr->bitlen = 20; |
|
/* How many bytes do I need? */ |
|
for (i = 0; i < 8; i++) { |
|
if (ntohl(addr->data[i]) & MPLS_LS_S_MASK) { |
|
addr->bytelen = (i + 1)*4; |
|
break; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
addr->family = AF_INET; |
|
if (family != AF_UNSPEC && family != AF_INET) |
|
return -1; |
|
|
|
if (get_addr_ipv4((__u8 *)addr->data, name) <= 0) |
|
return -1; |
|
|
|
addr->bytelen = 4; |
|
addr->bitlen = -1; |
|
return 0; |
|
} |
|
|
|
int af_bit_len(int af) |
|
{ |
|
switch (af) { |
|
case AF_INET6: |
|
return 128; |
|
case AF_INET: |
|
return 32; |
|
case AF_DECnet: |
|
return 16; |
|
case AF_IPX: |
|
return 80; |
|
case AF_MPLS: |
|
return 20; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int af_byte_len(int af) |
|
{ |
|
return af_bit_len(af) / 8; |
|
} |
|
|
|
int get_prefix_1(inet_prefix *dst, char *arg, int family) |
|
{ |
|
int err; |
|
unsigned plen; |
|
char *slash; |
|
|
|
memset(dst, 0, sizeof(*dst)); |
|
|
|
if (strcmp(arg, "default") == 0 || |
|
strcmp(arg, "any") == 0 || |
|
strcmp(arg, "all") == 0) { |
|
if ((family == AF_DECnet) || (family == AF_MPLS)) |
|
return -1; |
|
dst->family = family; |
|
dst->bytelen = 0; |
|
dst->bitlen = 0; |
|
return 0; |
|
} |
|
|
|
slash = strchr(arg, '/'); |
|
if (slash) |
|
*slash = 0; |
|
|
|
err = get_addr_1(dst, arg, family); |
|
if (err == 0) { |
|
dst->bitlen = af_bit_len(dst->family); |
|
|
|
if (slash) { |
|
if (get_netmask(&plen, slash+1, 0) |
|
|| plen > dst->bitlen) { |
|
err = -1; |
|
goto done; |
|
} |
|
dst->flags |= PREFIXLEN_SPECIFIED; |
|
dst->bitlen = plen; |
|
} |
|
} |
|
done: |
|
if (slash) |
|
*slash = '/'; |
|
return err; |
|
} |
|
|
|
int get_addr(inet_prefix *dst, const char *arg, int family) |
|
{ |
|
if (get_addr_1(dst, arg, family)) { |
|
fprintf(stderr, "Error: %s address is expected rather than \"%s\".\n", |
|
family_name(family) ,arg); |
|
exit(1); |
|
} |
|
return 0; |
|
} |
|
|
|
int get_prefix(inet_prefix *dst, char *arg, int family) |
|
{ |
|
if (family == AF_PACKET) { |
|
fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg); |
|
exit(1); |
|
} |
|
if (get_prefix_1(dst, arg, family)) { |
|
fprintf(stderr, "Error: %s prefix is expected rather than \"%s\".\n", |
|
family_name(family) ,arg); |
|
exit(1); |
|
} |
|
return 0; |
|
} |
|
|
|
__u32 get_addr32(const char *name) |
|
{ |
|
inet_prefix addr; |
|
if (get_addr_1(&addr, name, AF_INET)) { |
|
fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name); |
|
exit(1); |
|
} |
|
return addr.data[0]; |
|
} |
|
|
|
void incomplete_command(void) |
|
{ |
|
fprintf(stderr, "Command line is not complete. Try option \"help\"\n"); |
|
exit(-1); |
|
} |
|
|
|
void missarg(const char *key) |
|
{ |
|
fprintf(stderr, "Error: argument \"%s\" is required\n", key); |
|
exit(-1); |
|
} |
|
|
|
void invarg(const char *msg, const char *arg) |
|
{ |
|
fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg); |
|
exit(-1); |
|
} |
|
|
|
void duparg(const char *key, const char *arg) |
|
{ |
|
fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg); |
|
exit(-1); |
|
} |
|
|
|
void duparg2(const char *key, const char *arg) |
|
{ |
|
fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg); |
|
exit(-1); |
|
} |
|
|
|
int matches(const char *cmd, const char *pattern) |
|
{ |
|
int len = strlen(cmd); |
|
if (len > strlen(pattern)) |
|
return -1; |
|
return memcmp(pattern, cmd, len); |
|
} |
|
|
|
int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits) |
|
{ |
|
const __u32 *a1 = a->data; |
|
const __u32 *a2 = b->data; |
|
int words = bits >> 0x05; |
|
|
|
bits &= 0x1f; |
|
|
|
if (words) |
|
if (memcmp(a1, a2, words << 2)) |
|
return -1; |
|
|
|
if (bits) { |
|
__u32 w1, w2; |
|
__u32 mask; |
|
|
|
w1 = a1[words]; |
|
w2 = a2[words]; |
|
|
|
mask = htonl((0xffffffff) << (0x20 - bits)); |
|
|
|
if ((w1 ^ w2) & mask) |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int __iproute2_hz_internal; |
|
|
|
int __get_hz(void) |
|
{ |
|
char name[1024]; |
|
int hz = 0; |
|
FILE *fp; |
|
|
|
if (getenv("HZ")) |
|
return atoi(getenv("HZ")) ? : HZ; |
|
|
|
if (getenv("PROC_NET_PSCHED")) { |
|
snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED")); |
|
} else if (getenv("PROC_ROOT")) { |
|
snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT")); |
|
} else { |
|
strcpy(name, "/proc/net/psched"); |
|
} |
|
fp = fopen(name, "r"); |
|
|
|
if (fp) { |
|
unsigned nom, denom; |
|
if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2) |
|
if (nom == 1000000) |
|
hz = denom; |
|
fclose(fp); |
|
} |
|
if (hz) |
|
return hz; |
|
return HZ; |
|
} |
|
|
|
int __iproute2_user_hz_internal; |
|
|
|
int __get_user_hz(void) |
|
{ |
|
return sysconf(_SC_CLK_TCK); |
|
} |
|
|
|
const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen) |
|
{ |
|
switch (af) { |
|
case AF_INET: |
|
case AF_INET6: |
|
return inet_ntop(af, addr, buf, buflen); |
|
#ifndef ANDROID |
|
case AF_MPLS: |
|
return mpls_ntop(af, addr, buf, buflen); |
|
case AF_IPX: |
|
return ipx_ntop(af, addr, buf, buflen); |
|
case AF_DECnet: |
|
{ |
|
struct dn_naddr dna = { 2, { 0, 0, }}; |
|
memcpy(dna.a_addr, addr, 2); |
|
return dnet_ntop(af, &dna, buf, buflen); |
|
} |
|
#endif |
|
case AF_PACKET: |
|
return ll_addr_n2a(addr, len, ARPHRD_VOID, buf, buflen); |
|
default: |
|
return "???"; |
|
} |
|
} |
|
|
|
int read_family(const char *name) |
|
{ |
|
int family = AF_UNSPEC; |
|
if (strcmp(name, "inet") == 0) |
|
family = AF_INET; |
|
else if (strcmp(name, "inet6") == 0) |
|
family = AF_INET6; |
|
else if (strcmp(name, "dnet") == 0) |
|
family = AF_DECnet; |
|
else if (strcmp(name, "link") == 0) |
|
family = AF_PACKET; |
|
else if (strcmp(name, "ipx") == 0) |
|
family = AF_IPX; |
|
else if (strcmp(name, "mpls") == 0) |
|
family = AF_MPLS; |
|
else if (strcmp(name, "bridge") == 0) |
|
family = AF_BRIDGE; |
|
return family; |
|
} |
|
|
|
const char *family_name(int family) |
|
{ |
|
if (family == AF_INET) |
|
return "inet"; |
|
if (family == AF_INET6) |
|
return "inet6"; |
|
if (family == AF_DECnet) |
|
return "dnet"; |
|
if (family == AF_PACKET) |
|
return "link"; |
|
if (family == AF_IPX) |
|
return "ipx"; |
|
if (family == AF_MPLS) |
|
return "mpls"; |
|
if (family == AF_BRIDGE) |
|
return "bridge"; |
|
return "???"; |
|
} |
|
|
|
#ifdef RESOLVE_HOSTNAMES |
|
struct namerec |
|
{ |
|
struct namerec *next; |
|
const char *name; |
|
inet_prefix addr; |
|
}; |
|
|
|
#define NHASH 257 |
|
static struct namerec *nht[NHASH]; |
|
|
|
static const char *resolve_address(const void *addr, int len, int af) |
|
{ |
|
struct namerec *n; |
|
struct hostent *h_ent; |
|
unsigned hash; |
|
static int notfirst; |
|
|
|
|
|
if (af == AF_INET6 && ((__u32*)addr)[0] == 0 && |
|
((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) { |
|
af = AF_INET; |
|
addr += 12; |
|
len = 4; |
|
} |
|
|
|
hash = *(__u32 *)(addr + len - 4) % NHASH; |
|
|
|
for (n = nht[hash]; n; n = n->next) { |
|
if (n->addr.family == af && |
|
n->addr.bytelen == len && |
|
memcmp(n->addr.data, addr, len) == 0) |
|
return n->name; |
|
} |
|
if ((n = malloc(sizeof(*n))) == NULL) |
|
return NULL; |
|
n->addr.family = af; |
|
n->addr.bytelen = len; |
|
n->name = NULL; |
|
memcpy(n->addr.data, addr, len); |
|
n->next = nht[hash]; |
|
nht[hash] = n; |
|
if (++notfirst == 1) |
|
sethostent(1); |
|
fflush(stdout); |
|
|
|
if ((h_ent = gethostbyaddr(addr, len, af)) != NULL) |
|
n->name = strdup(h_ent->h_name); |
|
|
|
/* Even if we fail, "negative" entry is remembered. */ |
|
return n->name; |
|
} |
|
#endif |
|
|
|
const char *format_host(int af, int len, const void *addr, |
|
char *buf, int buflen) |
|
{ |
|
#ifdef RESOLVE_HOSTNAMES |
|
if (resolve_hosts) { |
|
const char *n; |
|
|
|
len = len <= 0 ? af_byte_len(af) : len; |
|
|
|
if (len > 0 && |
|
(n = resolve_address(addr, len, af)) != NULL) |
|
return n; |
|
} |
|
#endif |
|
return rt_addr_n2a(af, len, addr, buf, buflen); |
|
} |
|
|
|
|
|
char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen) |
|
{ |
|
char *ptr = buf; |
|
int i; |
|
|
|
for (i=0; i<len; i++) { |
|
if (blen < 3) |
|
break; |
|
sprintf(ptr, "%02x", str[i]); |
|
ptr += 2; |
|
blen -= 2; |
|
} |
|
return buf; |
|
} |
|
|
|
__u8* hexstring_a2n(const char *str, __u8 *buf, int blen) |
|
{ |
|
int cnt = 0; |
|
char *endptr; |
|
|
|
if (strlen(str) % 2) |
|
return NULL; |
|
while (cnt < blen && strlen(str) > 1) { |
|
unsigned int tmp; |
|
char tmpstr[3]; |
|
|
|
strncpy(tmpstr, str, 2); |
|
tmpstr[2] = '\0'; |
|
tmp = strtoul(tmpstr, &endptr, 16); |
|
if (errno != 0 || tmp > 0xFF || *endptr != '\0') |
|
return NULL; |
|
buf[cnt++] = tmp; |
|
str += 2; |
|
} |
|
return buf; |
|
} |
|
|
|
int addr64_n2a(__u64 addr, char *buff, size_t len) |
|
{ |
|
__u16 *words = (__u16 *)&addr; |
|
__u16 v; |
|
int i, ret; |
|
size_t written = 0; |
|
char *sep = ":"; |
|
|
|
for (i = 0; i < 4; i++) { |
|
v = ntohs(words[i]); |
|
|
|
if (i == 3) |
|
sep = ""; |
|
|
|
ret = snprintf(&buff[written], len - written, "%x%s", v, sep); |
|
if (ret < 0) |
|
return ret; |
|
|
|
written += ret; |
|
} |
|
|
|
return written; |
|
} |
|
|
|
int print_timestamp(FILE *fp) |
|
{ |
|
struct timeval tv; |
|
struct tm *tm; |
|
|
|
gettimeofday(&tv, NULL); |
|
tm = localtime(&tv.tv_sec); |
|
|
|
if (timestamp_short) { |
|
char tshort[40]; |
|
|
|
strftime(tshort, sizeof(tshort), "%Y-%m-%dT%H:%M:%S", tm); |
|
fprintf(fp, "[%s.%06ld] ", tshort, tv.tv_usec); |
|
} else { |
|
char *tstr = asctime(tm); |
|
|
|
tstr[strlen(tstr)-1] = 0; |
|
fprintf(fp, "Timestamp: %s %ld usec\n", |
|
tstr, tv.tv_usec); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int cmdlineno; |
|
|
|
/* Like glibc getline but handle continuation lines and comments */ |
|
ssize_t getcmdline(char **linep, size_t *lenp, FILE *in) |
|
{ |
|
ssize_t cc; |
|
char *cp; |
|
|
|
if ((cc = getline(linep, lenp, in)) < 0) |
|
return cc; /* eof or error */ |
|
++cmdlineno; |
|
|
|
cp = strchr(*linep, '#'); |
|
if (cp) |
|
*cp = '\0'; |
|
|
|
while ((cp = strstr(*linep, "\\\n")) != NULL) { |
|
char *line1 = NULL; |
|
size_t len1 = 0; |
|
ssize_t cc1; |
|
|
|
if ((cc1 = getline(&line1, &len1, in)) < 0) { |
|
fprintf(stderr, "Missing continuation line\n"); |
|
return cc1; |
|
} |
|
|
|
++cmdlineno; |
|
*cp = 0; |
|
|
|
cp = strchr(line1, '#'); |
|
if (cp) |
|
*cp = '\0'; |
|
|
|
*lenp = strlen(*linep) + strlen(line1) + 1; |
|
*linep = realloc(*linep, *lenp); |
|
if (!*linep) { |
|
fprintf(stderr, "Out of memory\n"); |
|
*lenp = 0; |
|
return -1; |
|
} |
|
cc += cc1 - 2; |
|
strcat(*linep, line1); |
|
free(line1); |
|
} |
|
return cc; |
|
} |
|
|
|
/* split command line into argument vector */ |
|
int makeargs(char *line, char *argv[], int maxargs) |
|
{ |
|
static const char ws[] = " \t\r\n"; |
|
char *cp; |
|
int argc = 0; |
|
|
|
for (cp = line + strspn(line, ws); *cp; cp += strspn(cp, ws)) { |
|
if (argc >= (maxargs - 1)) { |
|
fprintf(stderr, "Too many arguments to command\n"); |
|
exit(1); |
|
} |
|
|
|
/* word begins with quote */ |
|
if (*cp == '\'' || *cp == '"') { |
|
char quote = *cp++; |
|
|
|
argv[argc++] = cp; |
|
/* find ending quote */ |
|
cp = strchr(cp, quote); |
|
if (cp == NULL) { |
|
fprintf(stderr, "Unterminated quoted string\n"); |
|
exit(1); |
|
} |
|
*cp++ = 0; |
|
continue; |
|
} |
|
|
|
argv[argc++] = cp; |
|
/* find end of word */ |
|
cp += strcspn(cp, ws); |
|
*cp++ = 0; |
|
} |
|
argv[argc] = NULL; |
|
|
|
return argc; |
|
} |
|
|
|
int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6) |
|
{ |
|
if (strchr(src, ':')) |
|
return inet_pton(AF_INET6, src, dst6); |
|
else |
|
return inet_pton(AF_INET, src, dst); |
|
} |
|
|
|
void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n) |
|
{ |
|
char *tstr; |
|
time_t secs = ((__u32*)NLMSG_DATA(n))[0]; |
|
long usecs = ((__u32*)NLMSG_DATA(n))[1]; |
|
tstr = asctime(localtime(&secs)); |
|
tstr[strlen(tstr)-1] = 0; |
|
fprintf(fp, "Timestamp: %s %lu us\n", tstr, usecs); |
|
} |
|
|
|
static int on_netns(char *nsname, void *arg) |
|
{ |
|
struct netns_func *f = arg; |
|
|
|
if (netns_switch(nsname)) |
|
return -1; |
|
|
|
return f->func(nsname, f->arg); |
|
} |
|
|
|
static int on_netns_label(char *nsname, void *arg) |
|
{ |
|
printf("\nnetns: %s\n", nsname); |
|
return on_netns(nsname, arg); |
|
} |
|
|
|
int do_each_netns(int (*func)(char *nsname, void *arg), void *arg, |
|
bool show_label) |
|
{ |
|
struct netns_func nsf = { .func = func, .arg = arg }; |
|
|
|
if (show_label) |
|
return netns_foreach(on_netns_label, &nsf); |
|
|
|
return netns_foreach(on_netns, &nsf); |
|
} |
|
|
|
char *int_to_str(int val, char *buf) |
|
{ |
|
sprintf(buf, "%d", val); |
|
return buf; |
|
}
|
|
|