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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "primpl.h"
#include <string.h>
#if defined(LINUX)
#include <sys/un.h>
#endif
/*
* On Unix, the error code for gethostbyname() and gethostbyaddr()
* is returned in the global variable h_errno, instead of the usual
* errno.
*/
#if defined(XP_UNIX)
#if defined(_PR_NEED_H_ERRNO)
extern int h_errno;
#endif
#define _MD_GETHOST_ERRNO() h_errno
#else
#define _MD_GETHOST_ERRNO() _MD_ERRNO()
#endif
/*
* The meaning of the macros related to gethostbyname, gethostbyaddr,
* and gethostbyname2 is defined below.
* - _PR_HAVE_THREADSAFE_GETHOST: the gethostbyXXX functions return
* the result in thread specific storage. For example, AIX, HP-UX.
* - _PR_HAVE_GETHOST_R: have the gethostbyXXX_r functions. See next
* two macros.
* - _PR_HAVE_GETHOST_R_INT: the gethostbyXXX_r functions return an
* int. For example, Linux glibc.
* - _PR_HAVE_GETHOST_R_POINTER: the gethostbyXXX_r functions return
* a struct hostent* pointer. For example, Solaris.
*/
#if defined(_PR_NO_PREEMPT) || defined(_PR_HAVE_GETHOST_R) \
|| defined(_PR_HAVE_THREADSAFE_GETHOST)
#define _PR_NO_DNS_LOCK
#endif
#if defined(_PR_NO_DNS_LOCK)
#define LOCK_DNS()
#define UNLOCK_DNS()
#else
PRLock *_pr_dnsLock = NULL;
#define LOCK_DNS() PR_Lock(_pr_dnsLock)
#define UNLOCK_DNS() PR_Unlock(_pr_dnsLock)
#endif /* defined(_PR_NO_DNS_LOCK) */
/*
* Some platforms have the reentrant getprotobyname_r() and
* getprotobynumber_r(). However, they come in three flavors.
* Some return a pointer to struct protoent, others return
* an int, and glibc's flavor takes five arguments.
*/
#if defined(SOLARIS) || (defined(BSDI) && defined(_REENTRANT)) \
|| (defined(LINUX) && defined(_REENTRANT) \
&& defined(__GLIBC__) && __GLIBC__ < 2)
#define _PR_HAVE_GETPROTO_R
#define _PR_HAVE_GETPROTO_R_POINTER
#endif
#if defined(AIX4_3_PLUS) || (defined(AIX) && defined(_THREAD_SAFE)) \
|| (defined(HPUX10_10) && defined(_REENTRANT)) \
|| (defined(HPUX10_20) && defined(_REENTRANT)) \
|| defined(OPENBSD)
#define _PR_HAVE_GETPROTO_R
#define _PR_HAVE_GETPROTO_R_INT
#endif
#if __FreeBSD_version >= 602000
#define _PR_HAVE_GETPROTO_R
#define _PR_HAVE_5_ARG_GETPROTO_R
#endif
/* BeOS has glibc but not the glibc-style getprotobyxxx_r functions. */
#if (defined(__GLIBC__) && __GLIBC__ >= 2)
#define _PR_HAVE_GETPROTO_R
#define _PR_HAVE_5_ARG_GETPROTO_R
#endif
#if !defined(_PR_HAVE_GETPROTO_R)
PRLock* _getproto_lock = NULL;
#endif
#if defined(_PR_INET6_PROBE)
extern PRBool _pr_ipv6_is_present(void);
#endif
#define _PR_IN6_IS_ADDR_UNSPECIFIED(a) \
(((a)->pr_s6_addr32[0] == 0) && \
((a)->pr_s6_addr32[1] == 0) && \
((a)->pr_s6_addr32[2] == 0) && \
((a)->pr_s6_addr32[3] == 0))
#define _PR_IN6_IS_ADDR_LOOPBACK(a) \
(((a)->pr_s6_addr32[0] == 0) && \
((a)->pr_s6_addr32[1] == 0) && \
((a)->pr_s6_addr32[2] == 0) && \
((a)->pr_s6_addr[12] == 0) && \
((a)->pr_s6_addr[13] == 0) && \
((a)->pr_s6_addr[14] == 0) && \
((a)->pr_s6_addr[15] == 0x1U))
const PRIPv6Addr _pr_in6addr_any = {{{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0
}
}
};
const PRIPv6Addr _pr_in6addr_loopback = {{{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0x1U
}
}
};
/*
* The values at bytes 10 and 11 are compared using pointers to
* 8-bit fields, and not 32-bit fields, to make the comparison work on
* both big-endian and little-endian systems
*/
#define _PR_IN6_IS_ADDR_V4MAPPED(a) \
(((a)->pr_s6_addr32[0] == 0) && \
((a)->pr_s6_addr32[1] == 0) && \
((a)->pr_s6_addr[8] == 0) && \
((a)->pr_s6_addr[9] == 0) && \
((a)->pr_s6_addr[10] == 0xff) && \
((a)->pr_s6_addr[11] == 0xff))
#define _PR_IN6_IS_ADDR_V4COMPAT(a) \
(((a)->pr_s6_addr32[0] == 0) && \
((a)->pr_s6_addr32[1] == 0) && \
((a)->pr_s6_addr32[2] == 0))
#define _PR_IN6_V4MAPPED_TO_IPADDR(a) ((a)->pr_s6_addr32[3])
#if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2)
/*
* The _pr_QueryNetIfs() function finds out if the system has
* IPv4 or IPv6 source addresses configured and sets _pr_have_inet_if
* and _pr_have_inet6_if accordingly.
*
* We have an implementation using SIOCGIFCONF ioctl and a
* default implementation that simply sets _pr_have_inet_if
* and _pr_have_inet6_if to true. A better implementation
* would be to use the routing sockets (see Chapter 17 of
* W. Richard Stevens' Unix Network Programming, Vol. 1, 2nd. Ed.)
*/
static PRLock *_pr_query_ifs_lock = NULL;
static PRBool _pr_have_inet_if = PR_FALSE;
static PRBool _pr_have_inet6_if = PR_FALSE;
#undef DEBUG_QUERY_IFS
#if defined(AIX) \
|| (defined(DARWIN) && !defined(HAVE_GETIFADDRS))
/*
* Use SIOCGIFCONF ioctl on platforms that don't have routing
* sockets. Warning: whether SIOCGIFCONF ioctl returns AF_INET6
* network interfaces is not portable.
*
* The _pr_QueryNetIfs() function is derived from the code in
* src/lib/libc/net/getifaddrs.c in BSD Unix and the code in
* Section 16.6 of W. Richard Stevens' Unix Network Programming,
* Vol. 1, 2nd. Ed.
*/
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#ifdef DEBUG_QUERY_IFS
static void
_pr_PrintIfreq(struct ifreq *ifr)
{
PRNetAddr addr;
struct sockaddr *sa;
const char* family;
char addrstr[64];
sa = &ifr->ifr_addr;
if (sa->sa_family == AF_INET) {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
family = "inet";
memcpy(&addr.inet.ip, &sin->sin_addr, sizeof(sin->sin_addr));
} else if (sa->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
family = "inet6";
memcpy(&addr.ipv6.ip, &sin6->sin6_addr, sizeof(sin6->sin6_addr));
} else {
return; /* skip if not AF_INET or AF_INET6 */
}
addr.raw.family = sa->sa_family;
PR_NetAddrToString(&addr, addrstr, sizeof(addrstr));
printf("%s: %s %s\n", ifr->ifr_name, family, addrstr);
}
#endif
static void
_pr_QueryNetIfs(void)
{
int sock;
int rv;
struct ifconf ifc;
struct ifreq *ifr;
struct ifreq *lifr;
PRUint32 len, lastlen;
char *buf;
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
return;
}
/* Issue SIOCGIFCONF request in a loop. */
lastlen = 0;
len = 100 * sizeof(struct ifreq); /* initial buffer size guess */
for (;;) {
buf = (char *)PR_Malloc(len);
if (NULL == buf) {
close(sock);
return;
}
ifc.ifc_buf = buf;
ifc.ifc_len = len;
rv = ioctl(sock, SIOCGIFCONF, &ifc);
if (rv < 0) {
if (errno != EINVAL || lastlen != 0) {
close(sock);
PR_Free(buf);
return;
}
} else {
if (ifc.ifc_len == lastlen) {
break; /* success, len has not changed */
}
lastlen = ifc.ifc_len;
}
len += 10 * sizeof(struct ifreq); /* increment */
PR_Free(buf);
}
close(sock);
ifr = ifc.ifc_req;
lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len];
while (ifr < lifr) {
struct sockaddr *sa;
int sa_len;
#ifdef DEBUG_QUERY_IFS
_pr_PrintIfreq(ifr);
#endif
sa = &ifr->ifr_addr;
if (sa->sa_family == AF_INET) {
struct sockaddr_in *sin = (struct sockaddr_in *) sa;
if (sin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) {
_pr_have_inet_if = PR_TRUE;
}
} else if (sa->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa;
if (!IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr)
&& !IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
_pr_have_inet6_if = PR_TRUE;
}
}
#ifdef _PR_HAVE_SOCKADDR_LEN
sa_len = PR_MAX(sa->sa_len, sizeof(struct sockaddr));
#else
switch (sa->sa_family) {
#ifdef AF_LINK
case AF_LINK:
sa_len = sizeof(struct sockaddr_dl);
break;
#endif
case AF_INET6:
sa_len = sizeof(struct sockaddr_in6);
break;
default:
sa_len = sizeof(struct sockaddr);
break;
}
#endif
ifr = (struct ifreq *)(((char *)sa) + sa_len);
}
PR_Free(buf);
}
#elif (defined(DARWIN) && defined(HAVE_GETIFADDRS)) || defined(FREEBSD) \
|| defined(NETBSD) || defined(OPENBSD)
/*
* Use the BSD getifaddrs function.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <ifaddrs.h>
#include <netinet/in.h>
#ifdef DEBUG_QUERY_IFS
static void
_pr_PrintIfaddrs(struct ifaddrs *ifa)
{
struct sockaddr *sa;
const char* family;
void *addrp;
char addrstr[64];
sa = ifa->ifa_addr;
if (sa->sa_family == AF_INET) {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
family = "inet";
addrp = &sin->sin_addr;
} else if (sa->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
family = "inet6";
addrp = &sin6->sin6_addr;
} else {
return; /* skip if not AF_INET or AF_INET6 */
}
inet_ntop(sa->sa_family, addrp, addrstr, sizeof(addrstr));
printf("%s: %s %s\n", ifa->ifa_name, family, addrstr);
}
#endif
static void
_pr_QueryNetIfs(void)
{
struct ifaddrs *ifp;
struct ifaddrs *ifa;
if (getifaddrs(&ifp) == -1) {
return;
}
for (ifa = ifp; ifa; ifa = ifa->ifa_next) {
struct sockaddr *sa;
#ifdef DEBUG_QUERY_IFS
_pr_PrintIfaddrs(ifa);
#endif
sa = ifa->ifa_addr;
if (sa->sa_family == AF_INET) {
struct sockaddr_in *sin = (struct sockaddr_in *) sa;
if (sin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) {
_pr_have_inet_if = 1;
}
} else if (sa->sa_family == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa;
if (!IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr)
&& !IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
_pr_have_inet6_if = 1;
}
}
}
freeifaddrs(ifp);
}
#else /* default */
/*
* Emulate the code in NSPR 4.2 or older. PR_GetIPNodeByName behaves
* as if the system had both IPv4 and IPv6 source addresses configured.
*/
static void
_pr_QueryNetIfs(void)
{
_pr_have_inet_if = PR_TRUE;
_pr_have_inet6_if = PR_TRUE;
}
#endif
#endif /* _PR_INET6 && _PR_HAVE_GETHOSTBYNAME2 */
void _PR_InitNet(void)
{
#if defined(XP_UNIX)
#ifdef HAVE_NETCONFIG
/*
* This one-liner prevents the endless re-open's and re-read's of
* /etc/netconfig on EACH and EVERY call to accept(), connect(), etc.
*/
(void)setnetconfig();
#endif
#endif
#if !defined(_PR_NO_DNS_LOCK)
_pr_dnsLock = PR_NewLock();
#endif
#if !defined(_PR_HAVE_GETPROTO_R)
_getproto_lock = PR_NewLock();
#endif
#if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2)
_pr_query_ifs_lock = PR_NewLock();
#endif
}
void _PR_CleanupNet(void)
{
#if !defined(_PR_NO_DNS_LOCK)
if (_pr_dnsLock) {
PR_DestroyLock(_pr_dnsLock);
_pr_dnsLock = NULL;
}
#endif
#if !defined(_PR_HAVE_GETPROTO_R)
if (_getproto_lock) {
PR_DestroyLock(_getproto_lock);
_getproto_lock = NULL;
}
#endif
#if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2)
if (_pr_query_ifs_lock) {
PR_DestroyLock(_pr_query_ifs_lock);
_pr_query_ifs_lock = NULL;
}
#endif
}
/*
** Allocate space from the buffer, aligning it to "align" before doing
** the allocation. "align" must be a power of 2.
*/
static char *Alloc(PRIntn amount, char **bufp, PRIntn *buflenp, PRIntn align)
{
char *buf = *bufp;
PRIntn buflen = *buflenp;
if (align && ((long)buf & (align - 1))) {
PRIntn skip = align - ((ptrdiff_t)buf & (align - 1));
if (buflen < skip) {
return 0;
}
buf += skip;
buflen -= skip;
}
if (buflen < amount) {
return 0;
}
*bufp = buf + amount;
*buflenp = buflen - amount;
return buf;
}
typedef enum _PRIPAddrConversion {
_PRIPAddrNoConversion,
_PRIPAddrIPv4Mapped,
_PRIPAddrIPv4Compat
} _PRIPAddrConversion;
/*
** Convert an IPv4 address (v4) to an IPv4-mapped IPv6 address (v6).
*/
static void MakeIPv4MappedAddr(const char *v4, char *v6)
{
memset(v6, 0, 10);
memset(v6 + 10, 0xff, 2);
memcpy(v6 + 12, v4, 4);
}
/*
** Convert an IPv4 address (v4) to an IPv4-compatible IPv6 address (v6).
*/
static void MakeIPv4CompatAddr(const char *v4, char *v6)
{
memset(v6, 0, 12);
memcpy(v6 + 12, v4, 4);
}
/*
** Copy a hostent, and all of the memory that it refers to into
** (hopefully) stacked buffers.
*/
static PRStatus CopyHostent(
struct hostent *from,
char **buf,
PRIntn *bufsize,
_PRIPAddrConversion conversion,
PRHostEnt *to)
{
PRIntn len, na;
char **ap;
if (conversion != _PRIPAddrNoConversion
&& from->h_addrtype == AF_INET) {
PR_ASSERT(from->h_length == 4);
to->h_addrtype = PR_AF_INET6;
to->h_length = 16;
} else {
#if defined(_PR_INET6) || defined(_PR_INET6_PROBE)
if (AF_INET6 == from->h_addrtype) {
to->h_addrtype = PR_AF_INET6;
}
else
#endif
to->h_addrtype = from->h_addrtype;
to->h_length = from->h_length;
}
/* Copy the official name */
if (!from->h_name) {
return PR_FAILURE;
}
len = strlen(from->h_name) + 1;
to->h_name = Alloc(len, buf, bufsize, 0);
if (!to->h_name) {
return PR_FAILURE;
}
memcpy(to->h_name, from->h_name, len);
/* Count the aliases, then allocate storage for the pointers */
if (!from->h_aliases) {
na = 1;
} else {
for (na = 1, ap = from->h_aliases; *ap != 0; na++, ap++) {;} /* nothing to execute */
}
to->h_aliases = (char**)Alloc(
na * sizeof(char*), buf, bufsize, sizeof(char**));
if (!to->h_aliases) {
return PR_FAILURE;
}
/* Copy the aliases, one at a time */
if (!from->h_aliases) {
to->h_aliases[0] = 0;
} else {
for (na = 0, ap = from->h_aliases; *ap != 0; na++, ap++) {
len = strlen(*ap) + 1;
to->h_aliases[na] = Alloc(len, buf, bufsize, 0);
if (!to->h_aliases[na]) {
return PR_FAILURE;
}
memcpy(to->h_aliases[na], *ap, len);
}
to->h_aliases[na] = 0;
}
/* Count the addresses, then allocate storage for the pointers */
for (na = 1, ap = from->h_addr_list; *ap != 0; na++, ap++) {;} /* nothing to execute */
to->h_addr_list = (char**)Alloc(
na * sizeof(char*), buf, bufsize, sizeof(char**));
if (!to->h_addr_list) {
return PR_FAILURE;
}
/* Copy the addresses, one at a time */
for (na = 0, ap = from->h_addr_list; *ap != 0; na++, ap++) {
to->h_addr_list[na] = Alloc(to->h_length, buf, bufsize, 0);
if (!to->h_addr_list[na]) {
return PR_FAILURE;
}
if (conversion != _PRIPAddrNoConversion
&& from->h_addrtype == AF_INET) {
if (conversion == _PRIPAddrIPv4Mapped) {
MakeIPv4MappedAddr(*ap, to->h_addr_list[na]);
} else {
PR_ASSERT(conversion == _PRIPAddrIPv4Compat);
MakeIPv4CompatAddr(*ap, to->h_addr_list[na]);
}
} else {
memcpy(to->h_addr_list[na], *ap, to->h_length);
}
}
to->h_addr_list[na] = 0;
return PR_SUCCESS;
}
#if !defined(_PR_HAVE_GETPROTO_R)
/*
** Copy a protoent, and all of the memory that it refers to into
** (hopefully) stacked buffers.
*/
static PRStatus CopyProtoent(
struct protoent *from, char *buf, PRIntn bufsize, PRProtoEnt *to)
{
PRIntn len, na;
char **ap;
/* Do the easy stuff */
to->p_num = from->p_proto;
/* Copy the official name */
if (!from->p_name) {
return PR_FAILURE;
}
len = strlen(from->p_name) + 1;
to->p_name = Alloc(len, &buf, &bufsize, 0);
if (!to->p_name) {
return PR_FAILURE;
}
memcpy(to->p_name, from->p_name, len);
/* Count the aliases, then allocate storage for the pointers */
for (na = 1, ap = from->p_aliases; *ap != 0; na++, ap++) {;} /* nothing to execute */
to->p_aliases = (char**)Alloc(
na * sizeof(char*), &buf, &bufsize, sizeof(char**));
if (!to->p_aliases) {
return PR_FAILURE;
}
/* Copy the aliases, one at a time */
for (na = 0, ap = from->p_aliases; *ap != 0; na++, ap++) {
len = strlen(*ap) + 1;
to->p_aliases[na] = Alloc(len, &buf, &bufsize, 0);
if (!to->p_aliases[na]) {
return PR_FAILURE;
}
memcpy(to->p_aliases[na], *ap, len);
}
to->p_aliases[na] = 0;
return PR_SUCCESS;
}
#endif /* !defined(_PR_HAVE_GETPROTO_R) */
/*
* #################################################################
* NOTE: tmphe, tmpbuf, bufsize, h, and h_err are local variables
* or arguments of PR_GetHostByName, PR_GetIPNodeByName, and
* PR_GetHostByAddr. DO NOT CHANGE THE NAMES OF THESE LOCAL
* VARIABLES OR ARGUMENTS.
* #################################################################
*/
#if defined(_PR_HAVE_GETHOST_R_INT)
#define GETHOSTBYNAME(name) \
(gethostbyname_r(name, &tmphe, tmpbuf, bufsize, &h, &h_err), h)
#define GETHOSTBYNAME2(name, af) \
(gethostbyname2_r(name, af, &tmphe, tmpbuf, bufsize, &h, &h_err), h)
#define GETHOSTBYADDR(addr, addrlen, af) \
(gethostbyaddr_r(addr, addrlen, af, \
&tmphe, tmpbuf, bufsize, &h, &h_err), h)
#elif defined(_PR_HAVE_GETHOST_R_POINTER)
#define GETHOSTBYNAME(name) \
gethostbyname_r(name, &tmphe, tmpbuf, bufsize, &h_err)
#define GETHOSTBYNAME2(name, af) \
gethostbyname2_r(name, af, &tmphe, tmpbuf, bufsize, &h_err)
#define GETHOSTBYADDR(addr, addrlen, af) \
gethostbyaddr_r(addr, addrlen, af, &tmphe, tmpbuf, bufsize, &h_err)
#else
#define GETHOSTBYNAME(name) gethostbyname(name)
#define GETHOSTBYNAME2(name, af) gethostbyname2(name, af)
#define GETHOSTBYADDR(addr, addrlen, af) gethostbyaddr(addr, addrlen, af)
#endif /* definition of GETHOSTBYXXX */
PR_IMPLEMENT(PRStatus) PR_GetHostByName(
const char *name, char *buf, PRIntn bufsize, PRHostEnt *hp)
{
struct hostent *h;
PRStatus rv = PR_FAILURE;
#if defined(_PR_HAVE_GETHOST_R)
char localbuf[PR_NETDB_BUF_SIZE];
char *tmpbuf;
struct hostent tmphe;
int h_err;
#endif
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
#if defined(_PR_HAVE_GETHOST_R)
tmpbuf = localbuf;
if (bufsize > sizeof(localbuf))
{
tmpbuf = (char *)PR_Malloc(bufsize);
if (NULL == tmpbuf)
{
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
return rv;
}
}
#endif
LOCK_DNS();
h = GETHOSTBYNAME(name);
if (NULL == h)
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO());
}
else
{
_PRIPAddrConversion conversion = _PRIPAddrNoConversion;
rv = CopyHostent(h, &buf, &bufsize, conversion, hp);
if (PR_SUCCESS != rv) {
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
}
}
UNLOCK_DNS();
#if defined(_PR_HAVE_GETHOST_R)
if (tmpbuf != localbuf) {
PR_Free(tmpbuf);
}
#endif
return rv;
}
#if !defined(_PR_INET6) && \
defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME)
typedef struct hostent * (*_pr_getipnodebyname_t)(const char *, int,
int, int *);
typedef struct hostent * (*_pr_getipnodebyaddr_t)(const void *, size_t,
int, int *);
typedef void (*_pr_freehostent_t)(struct hostent *);
static void * _pr_getipnodebyname_fp;
static void * _pr_getipnodebyaddr_fp;
static void * _pr_freehostent_fp;
/*
* Look up the addresses of getipnodebyname, getipnodebyaddr,
* and freehostent.
*/
PRStatus
_pr_find_getipnodebyname(void)
{
PRLibrary *lib;
PRStatus rv;
#define GETIPNODEBYNAME "getipnodebyname"
#define GETIPNODEBYADDR "getipnodebyaddr"
#define FREEHOSTENT "freehostent"
_pr_getipnodebyname_fp = PR_FindSymbolAndLibrary(GETIPNODEBYNAME, &lib);
if (NULL != _pr_getipnodebyname_fp) {
_pr_freehostent_fp = PR_FindSymbol(lib, FREEHOSTENT);
if (NULL != _pr_freehostent_fp) {
_pr_getipnodebyaddr_fp = PR_FindSymbol(lib, GETIPNODEBYADDR);
if (NULL != _pr_getipnodebyaddr_fp) {
rv = PR_SUCCESS;
}
else {
rv = PR_FAILURE;
}
} else {
rv = PR_FAILURE;
}
(void)PR_UnloadLibrary(lib);
} else {
rv = PR_FAILURE;
}
return rv;
}
#endif
#if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2)
/*
** Append the V4 addresses to the end of the list
*/
static PRStatus AppendV4AddrsToHostent(
struct hostent *from,
char **buf,
PRIntn *bufsize,
PRHostEnt *to)
{
PRIntn na, na_old;
char **ap;
char **new_addr_list;
/* Count the addresses, then grow storage for the pointers */
for (na_old = 0, ap = to->h_addr_list; *ap != 0; na_old++, ap++)
{;} /* nothing to execute */
for (na = na_old + 1, ap = from->h_addr_list; *ap != 0; na++, ap++)
{;} /* nothing to execute */
new_addr_list = (char**)Alloc(
na * sizeof(char*), buf, bufsize, sizeof(char**));
if (!new_addr_list) {
return PR_FAILURE;
}
/* Copy the V6 addresses, one at a time */
for (na = 0, ap = to->h_addr_list; *ap != 0; na++, ap++) {
new_addr_list[na] = to->h_addr_list[na];
}
to->h_addr_list = new_addr_list;
/* Copy the V4 addresses, one at a time */
for (ap = from->h_addr_list; *ap != 0; na++, ap++) {
to->h_addr_list[na] = Alloc(to->h_length, buf, bufsize, 0);
if (!to->h_addr_list[na]) {
return PR_FAILURE;
}
MakeIPv4MappedAddr(*ap, to->h_addr_list[na]);
}
to->h_addr_list[na] = 0;
return PR_SUCCESS;
}
#endif
PR_IMPLEMENT(PRStatus) PR_GetIPNodeByName(
const char *name, PRUint16 af, PRIntn flags,
char *buf, PRIntn bufsize, PRHostEnt *hp)
{
struct hostent *h = 0;
PRStatus rv = PR_FAILURE;
#if defined(_PR_HAVE_GETHOST_R)
char localbuf[PR_NETDB_BUF_SIZE];
char *tmpbuf;
struct hostent tmphe;
int h_err;
#endif
#if defined(_PR_HAVE_GETIPNODEBYNAME)
PRUint16 md_af = af;
int error_num;
int tmp_flags = 0;
#endif
#if defined(_PR_HAVE_GETHOSTBYNAME2)
PRBool did_af_inet = PR_FALSE;
#endif
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
if (af != PR_AF_INET && af != PR_AF_INET6) {
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
#if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2)
PR_Lock(_pr_query_ifs_lock);
/*
* Keep querying the presence of IPv4 and IPv6 interfaces until
* at least one is up. This allows us to detect the local
* machine going from offline to online.
*/
if (!_pr_have_inet_if && !_pr_have_inet6_if) {
_pr_QueryNetIfs();
#ifdef DEBUG_QUERY_IFS
if (_pr_have_inet_if) {
printf("Have IPv4 source address\n");
}
if (_pr_have_inet6_if) {
printf("Have IPv6 source address\n");
}
#endif
}
PR_Unlock(_pr_query_ifs_lock);
#endif
#if defined(_PR_HAVE_GETIPNODEBYNAME)
if (flags & PR_AI_V4MAPPED) {
tmp_flags |= AI_V4MAPPED;
}
if (flags & PR_AI_ADDRCONFIG) {
tmp_flags |= AI_ADDRCONFIG;
}
if (flags & PR_AI_ALL) {
tmp_flags |= AI_ALL;
}
if (af == PR_AF_INET6) {
md_af = AF_INET6;
}
else {
md_af = af;
}
#endif
#if defined(_PR_HAVE_GETHOST_R)
tmpbuf = localbuf;
if (bufsize > sizeof(localbuf))
{
tmpbuf = (char *)PR_Malloc(bufsize);
if (NULL == tmpbuf)
{
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
return rv;
}
}
#endif
/* Do not need to lock the DNS lock if getipnodebyname() is called */
#ifdef _PR_INET6
#ifdef _PR_HAVE_GETHOSTBYNAME2
LOCK_DNS();
if (af == PR_AF_INET6)
{
if ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet6_if)
{
#ifdef _PR_INET6_PROBE
if (_pr_ipv6_is_present())
#endif
h = GETHOSTBYNAME2(name, AF_INET6);
}
if ((NULL == h) && (flags & PR_AI_V4MAPPED)
&& ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet_if))
{
did_af_inet = PR_TRUE;
h = GETHOSTBYNAME2(name, AF_INET);
}
}
else
{
if ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet_if)
{
did_af_inet = PR_TRUE;
h = GETHOSTBYNAME2(name, af);
}
}
#elif defined(_PR_HAVE_GETIPNODEBYNAME)
h = getipnodebyname(name, md_af, tmp_flags, &error_num);
#else
#error "Unknown name-to-address translation function"
#endif /* _PR_HAVE_GETHOSTBYNAME2 */
#elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME)
if (_pr_ipv6_is_present())
{
#ifdef PR_GETIPNODE_NOT_THREADSAFE
LOCK_DNS();
#endif
h = (*((_pr_getipnodebyname_t)_pr_getipnodebyname_fp))(name, md_af, tmp_flags, &error_num);
}
else
{
LOCK_DNS();
h = GETHOSTBYNAME(name);
}
#else /* _PR_INET6 */
LOCK_DNS();
h = GETHOSTBYNAME(name);
#endif /* _PR_INET6 */
if (NULL == h)
{
#if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME)
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num);
#elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME)
if (_pr_ipv6_is_present()) {
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num);
}
else {
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO());
}
#else
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO());
#endif
}
else
{
_PRIPAddrConversion conversion = _PRIPAddrNoConversion;
if (af == PR_AF_INET6) {
conversion = _PRIPAddrIPv4Mapped;
}
rv = CopyHostent(h, &buf, &bufsize, conversion, hp);
if (PR_SUCCESS != rv) {
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
}
#if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME)
freehostent(h);
#elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME)
if (_pr_ipv6_is_present()) {
(*((_pr_freehostent_t)_pr_freehostent_fp))(h);
}
#endif
#if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2)
if ((PR_SUCCESS == rv) && (flags & PR_AI_V4MAPPED)
&& ((flags & PR_AI_ALL)
|| ((flags & PR_AI_ADDRCONFIG) && _pr_have_inet_if))
&& !did_af_inet && (h = GETHOSTBYNAME2(name, AF_INET)) != 0) {
rv = AppendV4AddrsToHostent(h, &buf, &bufsize, hp);
if (PR_SUCCESS != rv) {
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
}
}
#endif
}
/* Must match the convoluted logic above for LOCK_DNS() */
#ifdef _PR_INET6
#ifdef _PR_HAVE_GETHOSTBYNAME2
UNLOCK_DNS();
#endif /* _PR_HAVE_GETHOSTBYNAME2 */
#elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME)
#ifdef PR_GETIPNODE_NOT_THREADSAFE
UNLOCK_DNS();
#else
if (!_pr_ipv6_is_present()) {
UNLOCK_DNS();
}
#endif
#else /* _PR_INET6 */
UNLOCK_DNS();
#endif /* _PR_INET6 */
#if defined(_PR_HAVE_GETHOST_R)
if (tmpbuf != localbuf) {
PR_Free(tmpbuf);
}
#endif
return rv;
}
PR_IMPLEMENT(PRStatus) PR_GetHostByAddr(
const PRNetAddr *hostaddr, char *buf, PRIntn bufsize, PRHostEnt *hostentry)
{
struct hostent *h;
PRStatus rv = PR_FAILURE;
const void *addr;
PRUint32 tmp_ip;
int addrlen;
PRInt32 af;
#if defined(_PR_HAVE_GETHOST_R)
char localbuf[PR_NETDB_BUF_SIZE];
char *tmpbuf;
struct hostent tmphe;
int h_err;
#endif
#if defined(_PR_HAVE_GETIPNODEBYADDR)
int error_num;
#endif
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
if (hostaddr->raw.family == PR_AF_INET6)
{
#if defined(_PR_INET6_PROBE)
af = _pr_ipv6_is_present() ? AF_INET6 : AF_INET;
#elif defined(_PR_INET6)
af = AF_INET6;
#else
af = AF_INET;
#endif
#if defined(_PR_GHBA_DISALLOW_V4MAPPED)
if (_PR_IN6_IS_ADDR_V4MAPPED(&hostaddr->ipv6.ip)) {
af = AF_INET;
}
#endif
}
else
{
PR_ASSERT(hostaddr->raw.family == AF_INET);
af = AF_INET;
}
if (hostaddr->raw.family == PR_AF_INET6) {
#if defined(_PR_INET6) || defined(_PR_INET6_PROBE)
if (af == AF_INET6) {
addr = &hostaddr->ipv6.ip;
addrlen = sizeof(hostaddr->ipv6.ip);
}
else
#endif
{
PR_ASSERT(af == AF_INET);
if (!_PR_IN6_IS_ADDR_V4MAPPED(&hostaddr->ipv6.ip)) {
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return rv;
}
tmp_ip = _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)
&hostaddr->ipv6.ip);
addr = &tmp_ip;
addrlen = sizeof(tmp_ip);
}
} else {
PR_ASSERT(hostaddr->raw.family == AF_INET);
PR_ASSERT(af == AF_INET);
addr = &hostaddr->inet.ip;
addrlen = sizeof(hostaddr->inet.ip);
}
#if defined(_PR_HAVE_GETHOST_R)
tmpbuf = localbuf;
if (bufsize > sizeof(localbuf))
{
tmpbuf = (char *)PR_Malloc(bufsize);
if (NULL == tmpbuf)
{
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
return rv;
}
}
#endif
/* Do not need to lock the DNS lock if getipnodebyaddr() is called */
#if defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6)
h = getipnodebyaddr(addr, addrlen, af, &error_num);
#elif defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6_PROBE)
if (_pr_ipv6_is_present())
{
#ifdef PR_GETIPNODE_NOT_THREADSAFE
LOCK_DNS();
#endif
h = (*((_pr_getipnodebyaddr_t)_pr_getipnodebyaddr_fp))(addr, addrlen,
af, &error_num);
}
else
{
LOCK_DNS();
h = GETHOSTBYADDR(addr, addrlen, af);
}
#else /* _PR_HAVE_GETIPNODEBYADDR */
LOCK_DNS();
h = GETHOSTBYADDR(addr, addrlen, af);
#endif /* _PR_HAVE_GETIPNODEBYADDR */
if (NULL == h)
{
#if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYADDR)
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num);
#elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYADDR)
if (_pr_ipv6_is_present()) {
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num);
}
else {
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO());
}
#else
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO());
#endif
}
else
{
_PRIPAddrConversion conversion = _PRIPAddrNoConversion;
if (hostaddr->raw.family == PR_AF_INET6) {
if (af == AF_INET) {
if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr*)
&hostaddr->ipv6.ip)) {
conversion = _PRIPAddrIPv4Mapped;
} else if (_PR_IN6_IS_ADDR_V4COMPAT((PRIPv6Addr *)
&hostaddr->ipv6.ip)) {
conversion = _PRIPAddrIPv4Compat;
}
}
}
rv = CopyHostent(h, &buf, &bufsize, conversion, hostentry);
if (PR_SUCCESS != rv) {
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
}
#if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYADDR)
freehostent(h);
#elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYADDR)
if (_pr_ipv6_is_present()) {
(*((_pr_freehostent_t)_pr_freehostent_fp))(h);
}
#endif
}
/* Must match the convoluted logic above for LOCK_DNS() */
#if defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6)
#elif defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6_PROBE)
#ifdef PR_GETIPNODE_NOT_THREADSAFE
UNLOCK_DNS();
#else
if (!_pr_ipv6_is_present()) {
UNLOCK_DNS();
}
#endif
#else /* _PR_HAVE_GETIPNODEBYADDR */
UNLOCK_DNS();
#endif /* _PR_HAVE_GETIPNODEBYADDR */
#if defined(_PR_HAVE_GETHOST_R)
if (tmpbuf != localbuf) {
PR_Free(tmpbuf);
}
#endif
return rv;
}
/******************************************************************************/
/*
* Some systems define a reentrant version of getprotobyname(). Too bad
* the signature isn't always the same. But hey, they tried. If there
* is such a definition, use it. Otherwise, grab a lock and do it here.
*/
/******************************************************************************/
#if !defined(_PR_HAVE_GETPROTO_R)
/*
* This may seem like a silly thing to do, but the compiler SHOULD
* complain if getprotobyname_r() is implemented on some system and
* we're not using it. For sure these signatures are different than
* any usable implementation.
*/
#if defined(ANDROID)
/* Android's Bionic libc system includes prototypes for these in netdb.h,
* but doesn't actually include implementations. It uses the 5-arg form,
* so these functions end up not matching the prototype. So just rename
* them if not found.
*/
#define getprotobyname_r _pr_getprotobyname_r
#define getprotobynumber_r _pr_getprotobynumber_r
#endif
static struct protoent *getprotobyname_r(const char* name)
{
return getprotobyname(name);
} /* getprotobyname_r */
static struct protoent *getprotobynumber_r(PRInt32 number)
{
return getprotobynumber(number);
} /* getprotobynumber_r */
#endif /* !defined(_PR_HAVE_GETPROTO_R) */
PR_IMPLEMENT(PRStatus) PR_GetProtoByName(
const char* name, char* buffer, PRInt32 buflen, PRProtoEnt* result)
{
PRStatus rv = PR_SUCCESS;
#if defined(_PR_HAVE_GETPROTO_R)
struct protoent* res = (struct protoent*)result;
#endif
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
#if defined(_PR_HAVE_GETPROTO_R_INT)
{
/*
** The protoent_data has a pointer as the first field.
** That implies the buffer better be aligned, and char*
** doesn't promise much.
*/
PRUptrdiff aligned = (PRUptrdiff)buffer;
if (0 != (aligned & (sizeof(struct protoent_data*) - 1)))
{
aligned += sizeof(struct protoent_data*) - 1;
aligned &= ~(sizeof(struct protoent_data*) - 1);
buflen -= (aligned - (PRUptrdiff)buffer);
buffer = (char*)aligned;
}
}
#endif /* defined(_PR_HAVE_GETPROTO_R_INT) */
if (PR_MIN_NETDB_BUF_SIZE > buflen)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
#if defined(_PR_HAVE_GETPROTO_R_POINTER)
if (NULL == getprotobyname_r(name, res, buffer, buflen))
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
return PR_FAILURE;
}
#elif defined(_PR_HAVE_GETPROTO_R_INT)
/*
** The buffer needs to be zero'd, and it should be
** at least the size of a struct protoent_data.
*/
memset(buffer, 0, buflen);
if (-1 == getprotobyname_r(name, res, (struct protoent_data*)buffer))
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
return PR_FAILURE;
}
#elif defined(_PR_HAVE_5_ARG_GETPROTO_R)
/* The 5th argument for getprotobyname_r() cannot be NULL */
if (-1 == getprotobyname_r(name, res, buffer, buflen, &res))
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
return PR_FAILURE;
}
#else /* do it the hard way */
{
struct protoent *staticBuf;
PR_Lock(_getproto_lock);
staticBuf = getprotobyname_r(name);
if (NULL == staticBuf)
{
rv = PR_FAILURE;
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
}
else
{
rv = CopyProtoent(staticBuf, buffer, buflen, result);
if (PR_FAILURE == rv) {
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
}
}
PR_Unlock(_getproto_lock);
}
#endif /* all that */
return rv;
}
PR_IMPLEMENT(PRStatus) PR_GetProtoByNumber(
PRInt32 number, char* buffer, PRInt32 buflen, PRProtoEnt* result)
{
PRStatus rv = PR_SUCCESS;
#if defined(_PR_HAVE_GETPROTO_R)
struct protoent* res = (struct protoent*)result;
#endif
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
#if defined(_PR_HAVE_GETPROTO_R_INT)
{
/*
** The protoent_data has a pointer as the first field.
** That implies the buffer better be aligned, and char*
** doesn't promise much.
*/
PRUptrdiff aligned = (PRUptrdiff)buffer;
if (0 != (aligned & (sizeof(struct protoent_data*) - 1)))
{
aligned += sizeof(struct protoent_data*) - 1;
aligned &= ~(sizeof(struct protoent_data*) - 1);
buflen -= (aligned - (PRUptrdiff)buffer);
buffer = (char*)aligned;
}
}
#endif /* defined(_PR_HAVE_GETPROTO_R_INT) */
if (PR_MIN_NETDB_BUF_SIZE > buflen)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
#if defined(_PR_HAVE_GETPROTO_R_POINTER)
if (NULL == getprotobynumber_r(number, res, buffer, buflen))
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
return PR_FAILURE;
}
#elif defined(_PR_HAVE_GETPROTO_R_INT)
/*
** The buffer needs to be zero'd for these OS's.
*/
memset(buffer, 0, buflen);
if (-1 == getprotobynumber_r(number, res, (struct protoent_data*)buffer))
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
return PR_FAILURE;
}
#elif defined(_PR_HAVE_5_ARG_GETPROTO_R)
/* The 5th argument for getprotobynumber_r() cannot be NULL */
if (-1 == getprotobynumber_r(number, res, buffer, buflen, &res))
{
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
return PR_FAILURE;
}
#else /* do it the hard way */
{
struct protoent *staticBuf;
PR_Lock(_getproto_lock);
staticBuf = getprotobynumber_r(number);
if (NULL == staticBuf)
{
rv = PR_FAILURE;
PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO());
}
else
{
rv = CopyProtoent(staticBuf, buffer, buflen, result);
if (PR_FAILURE == rv) {
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
}
}
PR_Unlock(_getproto_lock);
}
#endif /* all that crap */
return rv;
}
PRUintn _PR_NetAddrSize(const PRNetAddr* addr)
{
PRUintn addrsize;
/*
* RFC 2553 added a new field (sin6_scope_id) to
* struct sockaddr_in6. PRNetAddr's ipv6 member has a
* scope_id field to match the new field. In order to
* work with older implementations supporting RFC 2133,
* we take the size of struct sockaddr_in6 instead of
* addr->ipv6.
*/
if (AF_INET == addr->raw.family) {
addrsize = sizeof(addr->inet);
}
else if (PR_AF_INET6 == addr->raw.family)
#if defined(_PR_INET6)
addrsize = sizeof(struct sockaddr_in6);
#else
addrsize = sizeof(addr->ipv6);
#endif
#if defined(XP_UNIX) || defined(XP_OS2)
else if (AF_UNIX == addr->raw.family)
{
#if defined(LINUX)
if (addr->local.path[0] == 0)
/* abstract socket address is supported on Linux only */
addrsize = strnlen(addr->local.path + 1,
sizeof(addr->local.path)) +
offsetof(struct sockaddr_un, sun_path) + 1;
else
#endif
addrsize = sizeof(addr->local);
}
#endif
else {
addrsize = 0;
}
return addrsize;
} /* _PR_NetAddrSize */
PR_IMPLEMENT(PRIntn) PR_EnumerateHostEnt(
PRIntn enumIndex, const PRHostEnt *hostEnt, PRUint16 port, PRNetAddr *address)
{
void *addr = hostEnt->h_addr_list[enumIndex++];
memset(address, 0, sizeof(PRNetAddr));
if (NULL == addr) {
enumIndex = 0;
}
else
{
address->raw.family = hostEnt->h_addrtype;
if (PR_AF_INET6 == hostEnt->h_addrtype)
{
address->ipv6.port = htons(port);
address->ipv6.flowinfo = 0;
address->ipv6.scope_id = 0;
memcpy(&address->ipv6.ip, addr, hostEnt->h_length);
}
else
{
PR_ASSERT(AF_INET == hostEnt->h_addrtype);
address->inet.port = htons(port);
memcpy(&address->inet.ip, addr, hostEnt->h_length);
}
}
return enumIndex;
} /* PR_EnumerateHostEnt */
PR_IMPLEMENT(PRStatus) PR_InitializeNetAddr(
PRNetAddrValue val, PRUint16 port, PRNetAddr *addr)
{
PRStatus rv = PR_SUCCESS;
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
if (val != PR_IpAddrNull) {
memset(addr, 0, sizeof(*addr));
}
addr->inet.family = AF_INET;
addr->inet.port = htons(port);
switch (val)
{
case PR_IpAddrNull:
break; /* don't overwrite the address */
case PR_IpAddrAny:
addr->inet.ip = htonl(INADDR_ANY);
break;
case PR_IpAddrLoopback:
addr->inet.ip = htonl(INADDR_LOOPBACK);
break;
default:
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
rv = PR_FAILURE;
}
return rv;
} /* PR_InitializeNetAddr */
PR_IMPLEMENT(PRStatus) PR_SetNetAddr(
PRNetAddrValue val, PRUint16 af, PRUint16 port, PRNetAddr *addr)
{
PRStatus rv = PR_SUCCESS;
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
if (af == PR_AF_INET6)
{
if (val != PR_IpAddrNull) {
memset(addr, 0, sizeof(addr->ipv6));
}
addr->ipv6.family = af;
addr->ipv6.port = htons(port);
addr->ipv6.flowinfo = 0;
addr->ipv6.scope_id = 0;
switch (val)
{
case PR_IpAddrNull:
break; /* don't overwrite the address */
case PR_IpAddrAny:
addr->ipv6.ip = _pr_in6addr_any;
break;
case PR_IpAddrLoopback:
addr->ipv6.ip = _pr_in6addr_loopback;
break;
default:
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
rv = PR_FAILURE;
}
}
else
{
if (val != PR_IpAddrNull) {
memset(addr, 0, sizeof(addr->inet));
}
addr->inet.family = af;
addr->inet.port = htons(port);
switch (val)
{
case PR_IpAddrNull:
break; /* don't overwrite the address */
case PR_IpAddrAny:
addr->inet.ip = htonl(INADDR_ANY);
break;
case PR_IpAddrLoopback:
addr->inet.ip = htonl(INADDR_LOOPBACK);
break;
default:
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
rv = PR_FAILURE;
}
}
return rv;
} /* PR_SetNetAddr */
PR_IMPLEMENT(PRBool)
PR_IsNetAddrType(const PRNetAddr *addr, PRNetAddrValue val)
{
if (addr->raw.family == PR_AF_INET6) {
if (val == PR_IpAddrAny) {
if (_PR_IN6_IS_ADDR_UNSPECIFIED((PRIPv6Addr *)&addr->ipv6.ip)) {
return PR_TRUE;
}
if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)
&& _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)&addr->ipv6.ip)
== htonl(INADDR_ANY)) {
return PR_TRUE;
}
} else if (val == PR_IpAddrLoopback) {
if (_PR_IN6_IS_ADDR_LOOPBACK((PRIPv6Addr *)&addr->ipv6.ip)) {
return PR_TRUE;
}
if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)
&& _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)&addr->ipv6.ip)
== htonl(INADDR_LOOPBACK)) {
return PR_TRUE;
}
} else if (val == PR_IpAddrV4Mapped
&& _PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)) {
return PR_TRUE;
}
} else {
if (addr->raw.family == AF_INET) {
if (val == PR_IpAddrAny && addr->inet.ip == htonl(INADDR_ANY)) {
return PR_TRUE;
}
if (val == PR_IpAddrLoopback
&& addr->inet.ip == htonl(INADDR_LOOPBACK)) {
return PR_TRUE;
}
}
}
return PR_FALSE;
}
extern int pr_inet_aton(const char *cp, PRUint32 *addr);
#define XX 127
static const unsigned char index_hex[256] = {
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,XX,XX, XX,XX,XX,XX,
XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
};
/*
* StringToV6Addr() returns 1 if the conversion succeeds,
* or 0 if the input is not a valid IPv6 address string.
* (Same as inet_pton(AF_INET6, string, addr).)
*/
static int StringToV6Addr(const char *string, PRIPv6Addr *addr)
{
const unsigned char *s = (const unsigned char *)string;
int section = 0; /* index of the current section (a 16-bit
* piece of the address */
int double_colon = -1; /* index of the section after the first
* 16-bit group of zeros represented by
* the double colon */
unsigned int val;
int len;
/* Handle initial (double) colon */
if (*s == ':') {
if (s[1] != ':') {
return 0;
}
s += 2;
addr->pr_s6_addr16[0] = 0;
section = double_colon = 1;
}
while (*s) {
if (section == 8) {
return 0; /* too long */
}
if (*s == ':') {
if (double_colon != -1) {
return 0; /* two double colons */
}
addr->pr_s6_addr16[section++] = 0;
double_colon = section;
s++;
continue;
}
for (len = val = 0; len < 4 && index_hex[*s] != XX; len++) {
val = (val << 4) + index_hex[*s++];
}
if (*s == '.') {
if (len == 0) {
return 0; /* nothing between : and . */
}
break;
}
if (*s == ':') {
s++;
if (!*s) {
return 0; /* cannot end with single colon */
}
} else if (*s) {
return 0; /* bad character */
}
addr->pr_s6_addr16[section++] = htons((unsigned short)val);
}
if (*s == '.') {
/* Have a trailing v4 format address */
if (section > 6) {
return 0; /* not enough room */
}
/*
* The number before the '.' is decimal, but we parsed it
* as hex. That means it is in BCD. Check it for validity