+++ /dev/null
---- /dev/null
-+++ b/include/netinet/ether.h
-@@ -0,0 +1,10 @@
-+#ifndef _NETINET_ETHER_H
-+#define _NETINET_ETHER_H
-+
-+char *ether_ntoa(const struct ether_addr *);
-+struct ether_addr *ether_aton(const char *);
-+int ether_ntohost(char *, const struct ether_addr *);
-+int ether_hostton(const char *, struct ether_addr *);
-+int ether_line(const char *, struct ether_addr *, char *);
-+
-+#endif /* !_NETINET_ETHER_H */
---- /dev/null
-+++ b/src/network/ethers.c
-@@ -0,0 +1,180 @@
-+/* Origin NetBSD: src/lib/libc/net/ethers.c */
-+
-+/*
-+ * ethers(3N) a la Sun.
-+ *
-+ * Written by Roland McGrath <roland@...b.com> 10/14/93.
-+ * Public domain.
-+ *
-+ * port for musl by Abdoulaye Walsimou GAYE <awg@...toolkit.org> 2012/10/15
-+ */
-+
-+#define _BSD_SOURCE
-+#include <net/ethernet.h>
-+#include <netinet/ether.h>
-+
-+#include <sys/param.h>
-+#include <assert.h>
-+#include <errno.h>
-+#include <paths.h>
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <string.h>
-+
-+#ifndef _PATH_ETHERS
-+#define _PATH_ETHERS "/etc/ethers"
-+#endif
-+
-+/*
-+ * ether_ntoa():
-+ * This function converts this structure into an ASCII string of the form
-+ * ``xx:xx:xx:xx:xx:xx'', consisting of 6 hexadecimal numbers separated
-+ * by colons. It returns a pointer to a static buffer that is reused for
-+ * each call.
-+ */
-+char *ether_ntoa(const struct ether_addr *e)
-+{
-+ static char a[18];
-+
-+ assert(e != NULL);
-+
-+ (void) snprintf(a, sizeof a, "%02x:%02x:%02x:%02x:%02x:%02x",
-+ e->ether_addr_octet[0], e->ether_addr_octet[1],
-+ e->ether_addr_octet[2], e->ether_addr_octet[3],
-+ e->ether_addr_octet[4], e->ether_addr_octet[5]);
-+ return a;
-+}
-+
-+/*
-+ * ether_aton():
-+ * This function converts an ASCII string of the same form and to a structure
-+ * containing the 6 octets of the address. It returns a pointer to a
-+ * static structure that is reused for each call.
-+ */
-+struct ether_addr *ether_aton(const char *s)
-+{
-+ static struct ether_addr n;
-+ unsigned int i[6];
-+
-+ assert(s != NULL);
-+
-+ if (sscanf(s, " %x:%x:%x:%x:%x:%x ", &i[0], &i[1],
-+ &i[2], &i[3], &i[4], &i[5]) == 6) {
-+ n.ether_addr_octet[0] = (unsigned char)i[0];
-+ n.ether_addr_octet[1] = (unsigned char)i[1];
-+ n.ether_addr_octet[2] = (unsigned char)i[2];
-+ n.ether_addr_octet[3] = (unsigned char)i[3];
-+ n.ether_addr_octet[4] = (unsigned char)i[4];
-+ n.ether_addr_octet[5] = (unsigned char)i[5];
-+ return &n;
-+ }
-+ return NULL;
-+}
-+
-+/*
-+ * ether_ntohost():
-+ * This function interrogates the data base mapping host names to Ethernet
-+ * addresses, /etc/ethers.
-+ * It looks up the given Ethernet address and writes the associated host name
-+ * into the character buffer passed.
-+ * It returns zero if it finds the requested host name and -1 if not.
-+ */
-+int ether_ntohost(char *hostname, const struct ether_addr *e)
-+{
-+ FILE *f;
-+ char *p;
-+ size_t len;
-+ struct ether_addr try;
-+
-+ assert(hostname != NULL);
-+ assert(e != NULL);
-+
-+ f = fopen(_PATH_ETHERS, "r");
-+ if (f == NULL)
-+ return -1;
-+ while ((p = fgetln(f, &len)) != NULL) {
-+ if (p[len - 1] != '\n')
-+ continue; /* skip lines w/o \n */
-+ p[--len] = '\0';
-+ if (ether_line(p, &try, hostname) == 0 &&
-+ memcmp(&try, e, sizeof try) == 0) {
-+ (void)fclose(f);
-+ return 0;
-+ }
-+ }
-+ (void)fclose(f);
-+ errno = ENOENT;
-+ return -1;
-+}
-+
-+/*
-+ * ether_hostton():
-+ * This function interrogates the data base mapping host names to Ethernet
-+ * addresses, /etc/ethers.
-+ * It looks up the given host name and writes the associated Ethernet address
-+ * into the structure passed.
-+ * It returns zero if it finds the requested address and -1 if not.
-+ */
-+int ether_hostton(const char *hostname, struct ether_addr *e)
-+{
-+ FILE *f;
-+ char *p;
-+ size_t len;
-+ char try[MAXHOSTNAMELEN + 1];
-+
-+ assert(hostname != NULL);
-+ assert(e != NULL);
-+
-+ f = fopen(_PATH_ETHERS, "r");
-+ if (f==NULL)
-+ return -1;
-+
-+ while ((p = fgetln(f, &len)) != NULL) {
-+ if (p[len - 1] != '\n')
-+ continue; /* skip lines w/o \n */
-+ p[--len] = '\0';
-+ if (ether_line(p, e, try) == 0 && strcmp(hostname, try) == 0) {
-+ (void)fclose(f);
-+ return 0;
-+ }
-+ }
-+ (void)fclose(f);
-+ errno = ENOENT;
-+ return -1;
-+}
-+
-+/*
-+ * ether_line():
-+ * This function parses a line from the /etc/ethers file and fills in the passed
-+ * ``struct ether_addr'' and character buffer with the Ethernet address and host
-+ * name on the line.
-+ * It returns zero if the line was successfully parsed and -1 if not.
-+ */
-+int ether_line(const char *l, struct ether_addr *e, char *hostname)
-+{
-+ unsigned int i[6];
-+
-+#define S2(arg) #arg
-+#define S1(arg) S2(arg)
-+ static const char fmt[] = " %x:%x:%x:%x:%x:%x"
-+ " %" S1(MAXHOSTNAMELEN) "s\n";
-+#undef S2
-+#undef S1
-+
-+ assert(l != NULL);
-+ assert(e != NULL);
-+ assert(hostname != NULL);
-+
-+ if (sscanf(l, fmt,
-+ &i[0], &i[1], &i[2], &i[3], &i[4], &i[5], hostname) == 7) {
-+ e->ether_addr_octet[0] = (unsigned char)i[0];
-+ e->ether_addr_octet[1] = (unsigned char)i[1];
-+ e->ether_addr_octet[2] = (unsigned char)i[2];
-+ e->ether_addr_octet[3] = (unsigned char)i[3];
-+ e->ether_addr_octet[4] = (unsigned char)i[4];
-+ e->ether_addr_octet[5] = (unsigned char)i[5];
-+ return 0;
-+ }
-+ errno = EINVAL;
-+ return -1;
-+}
projects / openwrt.git / blobdiff