summaryrefslogtreecommitdiff
path: root/libc/inet
diff options
context:
space:
mode:
Diffstat (limited to 'libc/inet')
-rw-r--r--libc/inet/Makefile4
-rw-r--r--libc/inet/ntop.c8
-rw-r--r--libc/inet/resolv.c142
3 files changed, 152 insertions, 2 deletions
diff --git a/libc/inet/Makefile b/libc/inet/Makefile
index e6ffff694..6fd75010d 100644
--- a/libc/inet/Makefile
+++ b/libc/inet/Makefile
@@ -39,8 +39,8 @@ MOBJ2=encodeh.o decodeh.o encoded.o decoded.o lengthd.o encodeq.o \
formquery.o dnslookup.o resolveaddress.o resolvemailbox.o \
opennameservers.o closenameservers.o resolvename.o gethostbyname.o\
res_init.o res_query.o gethostbyaddr.o \
- get_hosts_byname.o get_hosts_byaddr.o read_etc_hosts.o
-
+ get_hosts_byname.o get_hosts_byaddr.o read_etc_hosts.o \
+ gethostbyname2.o
MSRC3=socketcalls.c
MOBJ3= accept.o bind.o connect.o getpeername.o getsockname.o getsockopt.o \
diff --git a/libc/inet/ntop.c b/libc/inet/ntop.c
index 6d7e691cc..521c1de63 100644
--- a/libc/inet/ntop.c
+++ b/libc/inet/ntop.c
@@ -29,6 +29,13 @@
#include <stdio.h>
#include <string.h>
+#ifdef __UCLIBC_HAS_IPV6__
+#define INET_IPV6
+#define SPRINTF(a) sprintf a
+#include <ctype.h>
+#endif
+
+
/*
* WARNING: Don't even consider trying to compile this on a system where
* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
@@ -259,6 +266,7 @@ inet_pton6(src, dst)
int ch, saw_xdigit;
u_int val;
+
tp = memset(tmp, '\0', 16);
endp = tp + 16;
colonp = NULL;
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c
index 00b7a7634..034bb80db 100644
--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -32,6 +32,10 @@
*
* General cleanup
*
+ * 20-Jun-2001 Michal Moskal <malekith@pld.org.pl>
+ * partial IPv6 support (i.e. gethostbyname2() and resolve_address2()
+ * functions added), IPv6 nameservers are also supported.
+ *
*/
#define __FORCE_GLIBC__
@@ -59,6 +63,8 @@
#define MAX_SEARCH 4
#undef DEBUG
+/*#define DEBUG*/
+
#ifdef DEBUG
#define DPRINTF(X,args...) fprintf(stderr, X, ##args)
#else
@@ -465,6 +471,9 @@ int dns_lookup(const char *name, int type, int nscount, char **nsip,
int i, j, len, fd, pos;
static int ns = 0;
struct sockaddr_in sa;
+#ifdef __UCLIBC_HAS_IPV6__
+ struct sockaddr_in6 sa6;
+#endif /* __UCLIBC_HAS_IPV6__ */
int oldalarm;
__sighandler_t oldhandler;
struct resolv_header h;
@@ -473,6 +482,9 @@ int dns_lookup(const char *name, int type, int nscount, char **nsip,
unsigned char * packet = malloc(PACKETSZ);
unsigned char * lookup = malloc(MAXDNAME);
int variant = 0;
+#ifdef __UCLIBC_HAS_IPV6__
+ int v6;
+#endif /* __UCLIBC_HAS_IPV6__ */
fd = -1;
@@ -484,11 +496,18 @@ int dns_lookup(const char *name, int type, int nscount, char **nsip,
ns %= nscount;
while (retries++ < MAX_RETRIES) {
+#ifdef __UCLIBC_HAS_IPV6__
+ v6 = (inet_pton(AF_INET6, nsip[ns], &sa6.sin6_addr) > 0);
+#endif /* __UCLIBC_HAS_IPV6__ */
if (fd != -1)
close(fd);
+#ifndef __UCLIBC_HAS_IPV6__
fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+#else /* __UCLIBC_HAS_IPV6__ */
+ fd = socket(v6 ? AF_INET6 : AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+#endif /* __UCLIBC_HAS_IPV6__ */
if (fd == -1)
goto fail;
@@ -526,11 +545,28 @@ int dns_lookup(const char *name, int type, int nscount, char **nsip,
DPRINTF("On try %d, sending query to port %d of machine %s\n",
retries, NAMESERVER_PORT, nsip[ns]);
+#ifndef __UCLIBC_HAS_IPV6__
sa.sin_family = AF_INET;
sa.sin_port = htons(NAMESERVER_PORT);
sa.sin_addr.s_addr = inet_addr(nsip[ns]);
+#else /* __UCLIBC_HAS_IPV6__ */
+ if (v6) {
+ sa6.sin6_family = AF_INET6;
+ sa6.sin6_port = htons(NAMESERVER_PORT);
+ /* sa6.sin6_addr is already here */
+ } else {
+ sa.sin_family = AF_INET;
+ sa.sin_port = htons(NAMESERVER_PORT);
+ sa.sin_addr.s_addr = inet_addr(nsip[ns]);
+ }
+#endif /* __UCLIBC_HAS_IPV6__ */
+#ifndef __UCLIBC_HAS_IPV6__
if (connect(fd, (struct sockaddr *) &sa, sizeof(sa)) == -1) {
+#else /* __UCLIBC_HAS_IPV6__ */
+ if (connect(fd, (struct sockaddr *) (v6 ? &sa6 : &sa),
+ v6 ? sizeof(sa6) : sizeof(sa)) == -1) {
+#endif /* __UCLIBC_HAS_IPV6__ */
if (errno == ENETUNREACH) {
/* routing error, presume not transient */
goto tryall;
@@ -958,6 +994,92 @@ struct hostent *gethostbyname(const char *name)
}
#endif
+#ifdef L_gethostbyname2
+
+struct hostent *gethostbyname2(const char *name, int family)
+{
+#ifndef __UCLIBC_HAS_IPV6__
+ return family == AF_INET ? gethostbyname(name) : (struct hostent*)0;
+#else /* __UCLIBC_HAS_IPV6__ */
+ static struct hostent h;
+ static char namebuf[256];
+ static struct in6_addr in;
+ static struct in6_addr *addr_list[2];
+ struct hostent *hp;
+ unsigned char *packet;
+ struct resolv_answer a;
+ int i;
+ int nest = 0;
+
+ if (family == AF_INET)
+ return gethostbyname(name);
+
+ if (family != AF_INET6)
+ return NULL;
+
+ open_nameservers();
+
+ if (!name)
+ return 0;
+
+ if ((hp = get_hosts_byname(name))) /* do /etc/hosts first */
+ return(hp);
+
+ memset(&h, 0, sizeof(h));
+
+ addr_list[0] = &in;
+ addr_list[1] = 0;
+
+ strncpy(namebuf, name, sizeof(namebuf));
+
+ /* First check if this is already an address */
+ if (inet_pton(AF_INET6, name, &in)) {
+ h.h_name = namebuf;
+ h.h_addrtype = AF_INET6;
+ h.h_length = sizeof(in);
+ h.h_addr_list = (char **) addr_list;
+ return &h;
+ }
+
+ for (;;) {
+
+ i = dns_lookup(namebuf, T_AAAA, nameservers, nameserver, &packet, &a);
+
+ if (i < 0)
+ return 0;
+
+ strncpy(namebuf, a.dotted, sizeof(namebuf));
+ free(a.dotted);
+
+
+ if (a.atype == T_CNAME) { /* CNAME */
+ DPRINTF("Got a CNAME in gethostbyname()\n");
+ i = decode_dotted(packet, a.rdoffset, namebuf, sizeof(namebuf));
+ free(packet);
+
+ if (i < 0)
+ return 0;
+ if (++nest > MAX_RECURSE)
+ return 0;
+ continue;
+ } else if (a.atype == T_AAAA) { /* ADDRESS */
+ memcpy(&in, a.rdata, sizeof(in));
+ h.h_name = namebuf;
+ h.h_addrtype = AF_INET6;
+ h.h_length = sizeof(in);
+ h.h_addr_list = (char **) addr_list;
+ free(packet);
+ break;
+ } else {
+ free(packet);
+ return 0;
+ }
+ }
+
+ return &h;
+#endif /* __UCLIBC_HAS_IPV6__ */
+}
+#endif
#ifdef L_getnetbyname
@@ -1100,6 +1222,10 @@ struct hostent * read_etc_hosts(const char * name, int ip)
static struct hostent h;
static struct in_addr in;
static struct in_addr *addr_list[2];
+#ifdef __UCLIBC_HAS_IPV6__
+ static struct in6_addr in6;
+ static struct in6_addr *addr_list6[2];
+#endif /* __UCLIBC_HAS_IPV6__ */
static char line[80];
FILE *fp;
char *cp;
@@ -1142,8 +1268,24 @@ struct hostent * read_etc_hosts(const char * name, int ip)
continue;
}
+#ifndef __UCLIBC_HAS_IPV6__
if (inet_aton(alias[0], &in) == 0)
break; /* bad ip address */
+#else /* __UCLIBC_HAS_IPV6__ */
+ if (inet_aton(alias[0], &in) == 0) {
+ if (inet_pton(AF_INET6, alias[0], &in6) == 0) {
+ addr_list6[0] = &in6;
+ addr_list6[1] = 0;
+ h.h_name = alias[1];
+ h.h_addrtype = AF_INET6;
+ h.h_length = sizeof(in6);
+ h.h_addr_list = (char**) addr_list6;
+ fclose(fp);
+ return(&h);
+ } else
+ break; /* bad ip address */
+ }
+#endif /* __UCLIBC_HAS_IPV6__ */
addr_list[0] = &in;
addr_list[1] = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 19:13:45 +0000