+++ /dev/null
-/*
- * utils.c
- *
- * 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>
- *
- *
- * Changes:
- *
- * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <string.h>
-#include <netdb.h>
-#include <arpa/inet.h>
-#include <resolv.h>
-#include <asm/types.h>
-#include <linux/pkt_sched.h>
-#include <time.h>
-#include <sys/time.h>
-
-
-#include "utils.h"
-
-int get_integer(int *val, const char *arg, int base)
-{
- long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtol(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_unsigned(unsigned *val, const char *arg, int base)
-{
- unsigned long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_u64(__u64 *val, const char *arg, int base)
-{
- unsigned long long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtoull(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_u32(__u32 *val, const char *arg, int base)
-{
- unsigned long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_u16(__u16 *val, const char *arg, int base)
-{
- unsigned long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_u8(__u8 *val, const char *arg, int base)
-{
- unsigned long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0xFF)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_s16(__s16 *val, const char *arg, int base)
-{
- long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtol(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_s8(__s8 *val, const char *arg, int base)
-{
- long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtol(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_addr_1(inet_prefix *addr, const char *name, int family)
-{
- const char *cp;
- unsigned char *ap = (unsigned char*)addr->data;
- int i;
-
- memset(addr, 0, sizeof(*addr));
-
- if (strcmp(name, "default") == 0 ||
- strcmp(name, "all") == 0 ||
- strcmp(name, "any") == 0) {
- if (family == AF_DECnet)
- return -1;
- addr->family = family;
- addr->bytelen = (family == AF_INET6 ? 16 : 4);
- addr->bitlen = -1;
- 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;
- }
-
- 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;
- }
-
- addr->family = AF_INET;
- if (family != AF_UNSPEC && family != AF_INET)
- return -1;
- addr->bytelen = 4;
- addr->bitlen = -1;
- for (cp=name, i=0; *cp; cp++) {
- if (*cp <= '9' && *cp >= '0') {
- ap[i] = 10*ap[i] + (*cp-'0');
- continue;
- }
- if (*cp == '.' && ++i <= 3)
- continue;
- return -1;
- }
- return 0;
-}
-
-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)
- 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) {
- switch(dst->family) {
- case AF_INET6:
- dst->bitlen = 128;
- break;
- case AF_DECnet:
- dst->bitlen = 16;
- break;
- default:
- case AF_INET:
- dst->bitlen = 32;
- }
- if (slash) {
- if (get_unsigned(&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 (family == AF_PACKET) {
- fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
- exit(1);
- }
- if (get_addr_1(dst, arg, family)) {
- fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", 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: an inet prefix is expected rather than \"%s\".\n", 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)
-{
- __u32 *a1 = a->data;
- __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);
- 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);
- }
- default:
- return "???";
- }
-}
-
-#ifdef RESOLVE_HOSTNAMES
-struct namerec
-{
- struct namerec *next;
- inet_prefix addr;
- char *name;
-};
-
-static struct namerec *nht[256];
-
-char *resolve_address(const char *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 = addr[len-1] ^ addr[len-2] ^ addr[len-3] ^ addr[len-4];
-
- 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) {
- char *n;
- if (len <= 0) {
- switch (af) {
- case AF_INET:
- len = 4;
- break;
- case AF_INET6:
- len = 16;
- break;
- case AF_IPX:
- len = 10;
- break;
-#ifdef AF_DECnet
- /* I see no reasons why gethostbyname
- may not work for DECnet */
- case AF_DECnet:
- len = 2;
- break;
-#endif
- default: ;
- }
- }
- 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;
- if (i != len-1 && blen > 1) {
- *ptr++ = ':';
- blen--;
- }
- }
- return buf;
-}
-
-__u8* hexstring_a2n(const char *str, __u8 *buf, int blen)
-{
- int cnt = 0;
-
- for (;;) {
- unsigned acc;
- char ch;
-
- acc = 0;
-
- while ((ch = *str) != ':' && ch != 0) {
- if (ch >= '0' && ch <= '9')
- ch -= '0';
- else if (ch >= 'a' && ch <= 'f')
- ch -= 'a'-10;
- else if (ch >= 'A' && ch <= 'F')
- ch -= 'A'-10;
- else
- return NULL;
- acc = (acc<<4) + ch;
- str++;
- }
-
- if (acc > 255)
- return NULL;
- if (cnt < blen) {
- buf[cnt] = acc;
- cnt++;
- }
- if (ch == 0)
- break;
- ++str;
- }
- if (cnt < blen)
- memset(buf+cnt, 0, blen-cnt);
- return buf;
-}
-
-int print_timestamp(FILE *fp)
-{
- struct timeval tv;
- char *tstr;
-
- memset(&tv, 0, sizeof(tv));
- gettimeofday(&tv, NULL);
-
- tstr = asctime(localtime(&tv.tv_sec));
- tstr[strlen(tstr)-1] = 0;
- fprintf(fp, "Timestamp: %s %lu usec\n", tstr, tv.tv_usec);
- return 0;
-}
-
-int cmdlineno;
-
-/* Like glibc getline but handle continuation lines and comments */
-size_t getcmdline(char **linep, size_t *lenp, FILE *in)
-{
- size_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;
- size_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';
-
- *linep = realloc(*linep, strlen(*linep) + strlen(line1) + 1);
- if (!*linep) {
- fprintf(stderr, "Out of memory\n");
- 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 = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
- if (argc >= (maxargs - 1)) {
- fprintf(stderr, "Too many arguments to command\n");
- exit(1);
- }
- argv[argc++] = cp;
- }
- argv[argc] = NULL;
-
- return argc;
-}
git://git.onelab.eu / iproute2.git / blobdiff