Index: head/lib/libc/net/ether_addr.c =================================================================== --- head/lib/libc/net/ether_addr.c (revision 169519) +++ head/lib/libc/net/ether_addr.c (revision 169520) @@ -1,231 +1,215 @@ /* - * Copyright (c) 1995 - * Bill Paul . All rights reserved. + * Copyright (c) 1995 Bill Paul . + * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * ethernet address conversion and lookup routines * * Written by Bill Paul * Center for Telecommunications Research * Columbia University, New York City */ #include __FBSDID("$FreeBSD$"); -#include -#include #include -#include -#include #include #include + #include + #ifdef YP #include #include #include #endif +#include +#include +#include +#include + #ifndef _PATH_ETHERS -#define _PATH_ETHERS "/etc/ethers" +#define _PATH_ETHERS "/etc/ethers" #endif /* - * Parse a string of text containing an ethernet address and hostname - * and separate it into its component parts. + * Parse a string of text containing an ethernet address and hostname and + * separate it into its component parts. */ int -ether_line(l, e, hostname) - const char *l; - struct ether_addr *e; - char *hostname; +ether_line(const char *l, struct ether_addr *e, char *hostname) { int i, o[6]; - i = sscanf(l, "%x:%x:%x:%x:%x:%x %s", &o[0], &o[1], &o[2], - &o[3], &o[4], &o[5], - hostname); + i = sscanf(l, "%x:%x:%x:%x:%x:%x %s", &o[0], &o[1], &o[2], &o[3], + &o[4], &o[5], hostname); if (i != 7) return (i); - for (i=0; i<6; i++) e->octet[i] = o[i]; return (0); } /* - * Convert an ASCII representation of an ethernet address to - * binary form. + * Convert an ASCII representation of an ethernet address to binary form. */ -struct -ether_addr *ether_aton(a) - const char *a; +struct ether_addr * +ether_aton(const char *a) { int i; static struct ether_addr o; unsigned int o0, o1, o2, o3, o4, o5; i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o0, &o1, &o2, &o3, &o4, &o5); - if (i != 6) return (NULL); - o.octet[0]=o0; o.octet[1]=o1; o.octet[2]=o2; o.octet[3]=o3; o.octet[4]=o4; o.octet[5]=o5; - return ((struct ether_addr *)&o); } /* - * Convert a binary representation of an ethernet address to - * an ASCII string. + * Convert a binary representation of an ethernet address to an ASCII string. */ -char -*ether_ntoa(n) - const struct ether_addr *n; +char * +ether_ntoa(const struct ether_addr *n) { int i; static char a[18]; - i = sprintf(a, "%02x:%02x:%02x:%02x:%02x:%02x", - n->octet[0], n->octet[1], n->octet[2], - n->octet[3], n->octet[4], n->octet[5]); + i = sprintf(a, "%02x:%02x:%02x:%02x:%02x:%02x", n->octet[0], + n->octet[1], n->octet[2], n->octet[3], n->octet[4], n->octet[5]); if (i < 17) return (NULL); return ((char *)&a); } /* - * Map an ethernet address to a hostname. Use either /etc/ethers or - * NIS/YP. + * Map an ethernet address to a hostname. Use either /etc/ethers or NIS/YP. */ int -ether_ntohost(hostname, e) - char *hostname; - const struct ether_addr *e; +ether_ntohost(char *hostname, const struct ether_addr *e) { FILE *fp; char buf[BUFSIZ + 2]; struct ether_addr local_ether; char local_host[MAXHOSTNAMELEN]; #ifdef YP char *result; int resultlen; char *ether_a; char *yp_domain; #endif + if ((fp = fopen(_PATH_ETHERS, "r")) == NULL) return (1); - while (fgets(buf,BUFSIZ,fp)) { if (buf[0] == '#') continue; #ifdef YP if (buf[0] == '+') { if (yp_get_default_domain(&yp_domain)) continue; ether_a = ether_ntoa(e); if (yp_match(yp_domain, "ethers.byaddr", ether_a, - strlen(ether_a), &result, &resultlen)) { + strlen(ether_a), &result, &resultlen)) { continue; } strncpy(buf, result, resultlen); buf[resultlen] = '\0'; free(result); } #endif if (!ether_line(buf, &local_ether, local_host)) { if (!bcmp((char *)&local_ether.octet[0], - (char *)&e->octet[0], 6)) { - /* We have a match */ + (char *)&e->octet[0], 6)) { + /* We have a match. */ strcpy(hostname, local_host); fclose(fp); return(0); } } } fclose(fp); return (1); } /* - * Map a hostname to an ethernet address using /etc/ethers or - * NIS/YP. + * Map a hostname to an ethernet address using /etc/ethers or NIS/YP. */ int -ether_hostton(hostname, e) - const char *hostname; - struct ether_addr *e; +ether_hostton(const char *hostname, struct ether_addr *e) { FILE *fp; char buf[BUFSIZ + 2]; struct ether_addr local_ether; char local_host[MAXHOSTNAMELEN]; #ifdef YP char *result; int resultlen; char *yp_domain; #endif + if ((fp = fopen(_PATH_ETHERS, "r")) == NULL) return (1); - while (fgets(buf,BUFSIZ,fp)) { if (buf[0] == '#') continue; #ifdef YP if (buf[0] == '+') { if (yp_get_default_domain(&yp_domain)) continue; if (yp_match(yp_domain, "ethers.byname", hostname, - strlen(hostname), &result, &resultlen)) { + strlen(hostname), &result, &resultlen)) { continue; } strncpy(buf, result, resultlen); buf[resultlen] = '\0'; free(result); } #endif if (!ether_line(buf, &local_ether, local_host)) { if (!strcmp(hostname, local_host)) { - /* We have a match */ + /* We have a match. */ bcopy((char *)&local_ether.octet[0], - (char *)&e->octet[0], 6); + (char *)&e->octet[0], 6); fclose(fp); return(0); } } } fclose(fp); return (1); }