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-rw-r--r--inet/getnameinfo.c158
-rw-r--r--inet/in6_addr.c6
-rw-r--r--inet/net/ethernet.h76
3 files changed, 128 insertions, 112 deletions
diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c
index b9454f6..95ed6bf 100644
--- a/inet/getnameinfo.c
+++ b/inet/getnameinfo.c
@@ -45,6 +45,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define INET6 1
#define LOCAL 1
#define HOSTTABLE 0
+#define RESOLVER 1
#include <sys/types.h>
#include <sys/socket.h>
@@ -59,6 +60,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string.h>
#include <stdio.h>
#include <unistd.h>
+#include <alloca.h>
+#include <libc-lock.h>
+#include <arpa/inet.h>
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
@@ -79,39 +83,91 @@ struct hostent *_addr2hostname_hosts(const char *, int, int);
static char *domain;
static char domainbuffer[MAXHOSTNAMELEN];
-
-static char *
-nrl_domainname (void)
+static char *nrl_domainname(void)
{
static int first = 1;
if (first) {
- char *c;
- struct hostent *h;
-
- first = 0;
-
- if ((h = gethostbyname("localhost")) && (c = strchr(h->h_name, '.')))
- return strcpy(domain = domainbuffer, ++c);
-
- if (!gethostname(domainbuffer, sizeof(domainbuffer))) {
- if (c = strchr(domainbuffer, '.'))
- return (domain = ++c);
-
- if ((h = gethostbyname(domainbuffer)) && (c = strchr(h->h_name, '.')))
- return strcpy(domain = domainbuffer, ++c);
- }
- {
- struct in_addr in_addr;
+ __libc_lock_define_initialized (static, lock);
+ __libc_lock_lock (lock);
+
+ if (first) {
+ char *c;
+ struct hostent *h, th;
+ int tmpbuflen = 1024;
+ char *tmpbuf = __alloca(tmpbuflen);
+ int herror;
+
+ first = 0;
+
+ while (__gethostbyname_r("localhost", &th, tmpbuf, tmpbuflen, &h,
+ &herror)) {
+ if (herror == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ }
+ } else {
+ break;
+ }
+ }
+
+ if (h && (c = strchr(h->h_name, '.'))) {
+ strcpy(domain = domainbuffer, ++c);
+ goto ret;
+ }
+
+ if (!gethostname(domainbuffer, sizeof(domainbuffer))) {
+ if (c = strchr(domainbuffer, '.')) {
+ domain = ++c;
+ goto ret;
+ }
+
+ while (__gethostbyname_r(domainbuffer, &th, tmpbuf, tmpbuflen, &h,
+ &herror)) {
+ if (herror == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ }
+ } else {
+ break;
+ }
+ }
+
+ if (h && (c = strchr(h->h_name, '.'))) {
+ strcpy(domain = domainbuffer, ++c);
+ goto ret;
+ }
+ }
+
+ {
+ struct in_addr in_addr;
+
+ in_addr.s_addr = htonl(0x7f000001);
+
+ while (__gethostbyaddr_r((const char *)&in_addr, sizeof(struct in_addr), AF_INET, &th, tmpbuf, tmpbuflen, &h, &herror)) {
+ if (herror == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ }
+ } else {
+ break;
+ }
+ }
- in_addr.s_addr = htonl(0x7f000001);
+ if (h && (c = strchr(h->h_name, '.'))) {
+ domain = domainbuffer, ++c;
+ goto ret;
+ }
+ }
- if ((h = gethostbyaddr((const char *)&in_addr, sizeof(struct in_addr), AF_INET)) && (c = strchr(h->h_name, '.')))
- return strcpy(domain = domainbuffer, ++c);
}
- return NULL;
+ ret:
+ __libc_lock_unlock (lock);
};
return domain;
@@ -120,6 +176,10 @@ nrl_domainname (void)
int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t hostlen, char *serv, size_t servlen, int flags)
{
int serrno = errno;
+ int tmpbuflen = 1024;
+ int herrno;
+ char *tmpbuf = __alloca(tmpbuflen);
+ struct hostent th;
if (!sa)
return -1;
@@ -144,20 +204,39 @@ int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t ho
#if RESOLVER
if (!h) {
#if INET6
- if (sa->sa_family == AF_INET6)
- h = gethostbyaddr((void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), sizeof(struct in6_addr), AF_INET6);
- else
+ if (sa->sa_family == AF_INET6) {
+ while (__gethostbyaddr_r((void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), sizeof(struct in6_addr), AF_INET6, &th, tmpbuf, tmpbuflen, &h, &herrno)) {
+ if (herrno == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ } else {
+ __set_h_errno(herrno);
+ goto fail;
+ }
+ } else {
+ break;
+ }
+ }
+ } else {
#endif /* INET6 */
- h = gethostbyaddr((void *)&(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET);
- endhostent();
- };
+ while (__gethostbyaddr_r((void *)&(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET, &th, tmpbuf, tmpbuflen, &h, &herrno)) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ } else {
+ break;
+ }
+ }
+ }
+ }
#endif /* RESOLVER */
if (h) {
if (flags & NI_NOFQDN) {
char *c;
if ((c = nrl_domainname()) && (c = strstr(h->h_name, c)) && (c != h->h_name) && (*(--c) == '.')) {
- strncpy(host, h->h_name, min(hostlen, (c - h->h_name)));
+ strncpy(host, h->h_name, min(hostlen, (size_t) (c - h->h_name)));
break;
};
};
@@ -210,8 +289,20 @@ int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t ho
case AF_INET6:
#endif /* INET6 */
if (!(flags & NI_NUMERICSERV)) {
- struct servent *s;
- if (s = getservbyport(((struct sockaddr_in *)sa)->sin_port, (flags & NI_DGRAM) ? "udp" : "tcp")) {
+ struct servent *s, ts;
+ while (__getservbyport_r(((struct sockaddr_in *)sa)->sin_port, ((flags & NI_DGRAM) ? "udp" : "tcp"), &ts, tmpbuf, tmpbuflen, &s)) {
+ if (herrno == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ } else {
+ goto fail;
+ }
+ } else {
+ break;
+ }
+ }
+ if (s) {
strncpy(serv, s->s_name, servlen);
break;
};
@@ -224,7 +315,6 @@ int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t ho
break;
#endif /* LOCAL */
};
-
if (host && (hostlen > 0))
host[hostlen-1] = 0;
if (serv && (servlen > 0))
diff --git a/inet/in6_addr.c b/inet/in6_addr.c
index a68990e..69c9c0b 100644
--- a/inet/in6_addr.c
+++ b/inet/in6_addr.c
@@ -19,8 +19,10 @@
#include <netinet/in.h>
-const struct in6_addr in6addr_any = { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } };
-const struct in6_addr in6addr_loopback = { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } };
+const struct in6_addr in6addr_any =
+{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
+const struct in6_addr in6addr_loopback =
+{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } };
int inet6_isipv4mapped(const struct in6_addr *addr)
{
diff --git a/inet/net/ethernet.h b/inet/net/ethernet.h
deleted file mode 100644
index 89a92c5..0000000
--- a/inet/net/ethernet.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/* Based on the FreeBSD version of this file. Curiously, that file
- lacks a copyright in the header. */
-
-#ifndef __NET_ETHERNET_H
-#define __NET_ETHERNET_H 1
-
-#include <sys/cdefs.h>
-#include <sys/types.h>
-#include <linux/if_ether.h> /* IEEE 802.3 Ethernet constants */
-
-__BEGIN_DECLS
-
-/* This is a name for the 48 bit ethernet address available on many
- systems. */
-struct ether_addr
-{
- u_int8_t ether_addr_octet[ETH_ALEN];
-};
-
-/* 10Mb/s ethernet header */
-struct ether_header
-{
- u_int8_t ether_dhost[ETH_ALEN]; /* destination eth addr */
- u_int8_t ether_shost[ETH_ALEN]; /* source ether addr */
- u_int16_t ether_type; /* packet type ID field */
-};
-
-/* Ethernet protocol ID's */
-#define ETHERTYPE_PUP 0x0200 /* Xerox PUP */
-#define ETHERTYPE_IP 0x0800 /* IP */
-#define ETHERTYPE_ARP 0x0806 /* Address resolution */
-#define ETHERTYPE_REVARP 0x8035 /* Reverse ARP */
-
-#define ETHER_ADDR_LEN ETH_ALEN /* size of ethernet addr */
-#define ETHER_TYPE_LEN 2 /* bytes in type field */
-#define ETHER_CRC_LEN 4 /* bytes in CRC field */
-#define ETHER_HDR_LEN ETH_HLEN /* total octets in header */
-#define ETHER_MIN_LEN (ETH_ZLEN + ETH_CRC_LEN) /* min packet length */
-#define ETHER_MAX_LEN (ETH_FRAME_LEN + ETH_CRC_LEN) /* max packet length */
-
-/* make sure ethenet length is valid */
-#define ETHER_IS_VALID_LEN(foo) \
- ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
-
-/*
- * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
- * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
- * by an ETHER type (as given above) and then the (variable-length) header.
- */
-#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
-#define ETHERTYPE_NTRAILER 16
-
-#define ETHERMTU ETH_DATA_LEN
-#define ETHERMIN (ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
-
-__END_DECLS
-
-#endif /* net/ethernet.h */
generated by cgit v1.1 at 2024-12-22 18:55:25 +0000