diff options
Diffstat (limited to 'inet')
| -rw-r--r-- | inet/getnameinfo.c | 158 | ||||
| -rw-r--r-- | inet/in6_addr.c | 6 | ||||
| -rw-r--r-- | inet/net/ethernet.h | 76 |
3 files changed, 128 insertions, 112 deletions
diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c index b9454f6396..95ed6bf3f9 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 a68990e160..69c9c0b468 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 89a92c53f1..0000000000 --- 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 */ |