Delete bundled copy of NSS and replace with README.

nspr/pr/src/io/pripv6.c

Index: nspr/pr/src/io/pripv6.c
diff --git a/nspr/pr/src/io/pripv6.c b/nspr/pr/src/io/pripv6.c
deleted file mode 100644
index af7de49dea86b771de7182e244881b4c3bdba083..0000000000000000000000000000000000000000
--- a/nspr/pr/src/io/pripv6.c
+++ /dev/null
@@ -1,364 +0,0 @@
-/* -*- 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/. */
-
-/*
-** File:        pripv6.c
-** Description: Support for various functions unique to IPv6
-*/
-#include "primpl.h"
-#include <string.h>
-
-#if !defined(_PR_INET6) || defined(_PR_INET6_PROBE)
-
-static PRIOMethods ipv6_to_v4_tcpMethods;
-static PRIOMethods ipv6_to_v4_udpMethods;
-static PRDescIdentity _pr_ipv6_to_ipv4_id;
-extern PRBool IsValidNetAddr(const PRNetAddr *addr);
-extern PRIPv6Addr _pr_in6addr_any;
-extern PRIPv6Addr _pr_in6addr_loopback;
-
-/*
- * convert an IPv4-mapped IPv6 addr to an IPv4 addr
- */
-static void _PR_ConvertToIpv4NetAddr(const PRNetAddr *src_v6addr,
-											PRNetAddr *dst_v4addr)
-{
-const PRUint8 *srcp;
-
-	PR_ASSERT(PR_AF_INET6 == src_v6addr->ipv6.family);
-
-	if (PR_IsNetAddrType(src_v6addr, PR_IpAddrV4Mapped)) {
-		srcp = src_v6addr->ipv6.ip.pr_s6_addr;
-		memcpy((char *) &dst_v4addr->inet.ip, srcp + 12, 4);
-    } else if (PR_IsNetAddrType(src_v6addr, PR_IpAddrAny)) {
-        dst_v4addr->inet.ip = htonl(INADDR_ANY);
-    } else if (PR_IsNetAddrType(src_v6addr, PR_IpAddrLoopback)) {
-        dst_v4addr->inet.ip = htonl(INADDR_LOOPBACK);
-    }
-	dst_v4addr->inet.family = PR_AF_INET;
-	dst_v4addr->inet.port = src_v6addr->ipv6.port;
-}
-
-/*
- * convert an IPv4 addr to an IPv4-mapped IPv6 addr
- */
-static void _PR_ConvertToIpv6NetAddr(const PRNetAddr *src_v4addr,
-                                            PRNetAddr *dst_v6addr)
-{
-PRUint8 *dstp;
-
-	PR_ASSERT(PR_AF_INET == src_v4addr->inet.family);
-	dst_v6addr->ipv6.family = PR_AF_INET6;
-	dst_v6addr->ipv6.port = src_v4addr->inet.port;
-
- 	if (htonl(INADDR_ANY) == src_v4addr->inet.ip) {
-		dst_v6addr->ipv6.ip = _pr_in6addr_any;
-	} else {
-		dstp = dst_v6addr->ipv6.ip.pr_s6_addr;
-		memset(dstp, 0, 10);
-		memset(dstp + 10, 0xff, 2);
-		memcpy(dstp + 12,(char *) &src_v4addr->inet.ip, 4);
-	}
-}
-
-static PRStatus PR_CALLBACK Ipv6ToIpv4SocketBind(PRFileDesc *fd,
-								const PRNetAddr *addr)
-{
-	PRNetAddr tmp_ipv4addr;
-	const PRNetAddr *tmp_addrp;
-	PRFileDesc *lo = fd->lower;
-
-	if (PR_AF_INET6 != addr->raw.family) {
-        PR_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR, 0);
-		return PR_FAILURE;
-	}
-	if (PR_IsNetAddrType(addr, PR_IpAddrV4Mapped) ||
-    			PR_IsNetAddrType(addr, PR_IpAddrAny)) {
-		_PR_ConvertToIpv4NetAddr(addr, &tmp_ipv4addr);
-		tmp_addrp = &tmp_ipv4addr;
-	} else {
-        PR_SetError(PR_NETWORK_UNREACHABLE_ERROR, 0);
-		return PR_FAILURE;
-	}
-	return((lo->methods->bind)(lo,tmp_addrp));
-}
-
-static PRStatus PR_CALLBACK Ipv6ToIpv4SocketConnect(
-    PRFileDesc *fd, const PRNetAddr *addr, PRIntervalTime timeout)
-{
-	PRNetAddr tmp_ipv4addr;
-	const PRNetAddr *tmp_addrp;
-
-	if (PR_AF_INET6 != addr->raw.family) {
-        PR_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR, 0);
-		return PR_FAILURE;
-	}
-	if (PR_IsNetAddrType(addr, PR_IpAddrV4Mapped) ||
-			PR_IsNetAddrType(addr, PR_IpAddrLoopback)) {
-		_PR_ConvertToIpv4NetAddr(addr, &tmp_ipv4addr);
-		tmp_addrp = &tmp_ipv4addr;
-	} else {
-        PR_SetError(PR_NETWORK_UNREACHABLE_ERROR, 0);
-		return PR_FAILURE;
-	}
-	return (fd->lower->methods->connect)(fd->lower, tmp_addrp, timeout);
-}
-
-static PRInt32 PR_CALLBACK Ipv6ToIpv4SocketSendTo(
-    PRFileDesc *fd, const void *buf, PRInt32 amount,
-    PRIntn flags, const PRNetAddr *addr, PRIntervalTime timeout)
-{
-	PRNetAddr tmp_ipv4addr;
-	const PRNetAddr *tmp_addrp;
-
-	if (PR_AF_INET6 != addr->raw.family) {
-        PR_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR, 0);
-		return PR_FAILURE;
-	}
-	if (PR_IsNetAddrType(addr, PR_IpAddrV4Mapped) ||
-			PR_IsNetAddrType(addr, PR_IpAddrLoopback)) {
-		_PR_ConvertToIpv4NetAddr(addr, &tmp_ipv4addr);
-		tmp_addrp = &tmp_ipv4addr;
-	} else {
-        PR_SetError(PR_NETWORK_UNREACHABLE_ERROR, 0);
-		return PR_FAILURE;
-	}
-    return (fd->lower->methods->sendto)(
-        fd->lower, buf, amount, flags, tmp_addrp, timeout);
-}
-
-static PRFileDesc* PR_CALLBACK Ipv6ToIpv4SocketAccept (
-    PRFileDesc *fd, PRNetAddr *addr, PRIntervalTime timeout)
-{
-    PRStatus rv;
-    PRFileDesc *newfd;
-    PRFileDesc *newstack;
-	PRNetAddr tmp_ipv4addr;
-    PRNetAddr *addrlower = NULL;
-
-    PR_ASSERT(fd != NULL);
-    PR_ASSERT(fd->lower != NULL);
-
-    newstack = PR_NEW(PRFileDesc);
-    if (NULL == newstack)
-    {
-        PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
-        return NULL;
-    }
-    *newstack = *fd;  /* make a copy of the accepting layer */
-
-    if (addr)
-        addrlower = &tmp_ipv4addr;
-    newfd = (fd->lower->methods->accept)(fd->lower, addrlower, timeout);
-    if (NULL == newfd)
-    {
-        PR_DELETE(newstack);
-        return NULL;
-    }
-    if (addr)
-        _PR_ConvertToIpv6NetAddr(&tmp_ipv4addr, addr);
-
-    rv = PR_PushIOLayer(newfd, PR_TOP_IO_LAYER, newstack);
-    PR_ASSERT(PR_SUCCESS == rv);
-    return newfd;  /* that's it */
-}
-
-static PRInt32 PR_CALLBACK Ipv6ToIpv4SocketAcceptRead(PRFileDesc *sd,
-			PRFileDesc **nd, PRNetAddr **ipv6_raddr, void *buf, PRInt32 amount,
-							PRIntervalTime timeout)
-{
-    PRInt32 nbytes;
-    PRStatus rv;
-	PRNetAddr tmp_ipv4addr;
-    PRFileDesc *newstack;
-
-    PR_ASSERT(sd != NULL);
-    PR_ASSERT(sd->lower != NULL);
-
-    newstack = PR_NEW(PRFileDesc);
-    if (NULL == newstack)
-    {
-        PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
-        return -1;
-    }
-    *newstack = *sd;  /* make a copy of the accepting layer */
-
-    nbytes = sd->lower->methods->acceptread(
-        sd->lower, nd, ipv6_raddr, buf, amount, timeout);
-    if (-1 == nbytes)
-    {
-        PR_DELETE(newstack);
-        return nbytes;
-    }
-	tmp_ipv4addr = **ipv6_raddr;	/* copy */
-	_PR_ConvertToIpv6NetAddr(&tmp_ipv4addr, *ipv6_raddr);
-
-    /* this PR_PushIOLayer call cannot fail */
-    rv = PR_PushIOLayer(*nd, PR_TOP_IO_LAYER, newstack);
-    PR_ASSERT(PR_SUCCESS == rv);
-    return nbytes;
-}
-
-static PRStatus PR_CALLBACK Ipv6ToIpv4SocketGetName(PRFileDesc *fd,
-										PRNetAddr *ipv6addr)
-{
-	PRStatus result;
-	PRNetAddr tmp_ipv4addr;
-
-	result = (fd->lower->methods->getsockname)(fd->lower, &tmp_ipv4addr);
-	if (PR_SUCCESS == result) {
-		_PR_ConvertToIpv6NetAddr(&tmp_ipv4addr, ipv6addr);
-		PR_ASSERT(IsValidNetAddr(ipv6addr) == PR_TRUE);
-	}
-	return result;
-}
-
-static PRStatus PR_CALLBACK Ipv6ToIpv4SocketGetPeerName(PRFileDesc *fd,
-										PRNetAddr *ipv6addr)
-{
-	PRStatus result;
-	PRNetAddr tmp_ipv4addr;
-
-	result = (fd->lower->methods->getpeername)(fd->lower, &tmp_ipv4addr);
-	if (PR_SUCCESS == result) {
-		_PR_ConvertToIpv6NetAddr(&tmp_ipv4addr, ipv6addr);
-		PR_ASSERT(IsValidNetAddr(ipv6addr) == PR_TRUE);
-	}
-	return result;
-}
-
-static PRInt32 PR_CALLBACK Ipv6ToIpv4SocketRecvFrom(PRFileDesc *fd, void *buf,
-			PRInt32 amount, PRIntn flags, PRNetAddr *ipv6addr,
-				PRIntervalTime timeout)
-{
-	PRNetAddr tmp_ipv4addr;
-	PRInt32 result;
-
-    result = (fd->lower->methods->recvfrom)(
-        fd->lower, buf, amount, flags, &tmp_ipv4addr, timeout);
-	if (-1 != result) {
-		_PR_ConvertToIpv6NetAddr(&tmp_ipv4addr, ipv6addr);
-		PR_ASSERT(IsValidNetAddr(ipv6addr) == PR_TRUE);
-	}
-	return result;
-}
-
-#if defined(_PR_INET6_PROBE)
-static PRBool ipv6_is_present;
-extern PRBool _pr_test_ipv6_socket(void);
-
-#if !defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME)
-extern PRStatus _pr_find_getipnodebyname(void);
-#endif
-
-#if !defined(_PR_INET6) && defined(_PR_HAVE_GETADDRINFO)
-extern PRStatus _pr_find_getaddrinfo(void);
-#endif
-
-static PRBool
-_pr_probe_ipv6_presence(void)
-{
-#if !defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME)
-    if (_pr_find_getipnodebyname() != PR_SUCCESS)
-        return PR_FALSE;
-#endif
-
-#if !defined(_PR_INET6) && defined(_PR_HAVE_GETADDRINFO)
-    if (_pr_find_getaddrinfo() != PR_SUCCESS)
-        return PR_FALSE;
-#endif
-
-    return _pr_test_ipv6_socket();
-}
-#endif  /* _PR_INET6_PROBE */
-
-static PRCallOnceType _pr_init_ipv6_once;
-
-static PRStatus PR_CALLBACK _pr_init_ipv6(void)
-{
-    const PRIOMethods *stubMethods;
-
-#if defined(_PR_INET6_PROBE)
-    ipv6_is_present = _pr_probe_ipv6_presence();
-    if (ipv6_is_present)
-        return PR_SUCCESS;
-#endif
-
-    _pr_ipv6_to_ipv4_id = PR_GetUniqueIdentity("Ipv6_to_Ipv4 layer");
-    PR_ASSERT(PR_INVALID_IO_LAYER != _pr_ipv6_to_ipv4_id);
-
-	stubMethods = PR_GetDefaultIOMethods();
-
-	ipv6_to_v4_tcpMethods = *stubMethods;  /* first get the entire batch */
-	/* then override the ones we care about */
-	ipv6_to_v4_tcpMethods.connect = Ipv6ToIpv4SocketConnect;
-	ipv6_to_v4_tcpMethods.bind = Ipv6ToIpv4SocketBind;
-	ipv6_to_v4_tcpMethods.accept = Ipv6ToIpv4SocketAccept;
-	ipv6_to_v4_tcpMethods.acceptread = Ipv6ToIpv4SocketAcceptRead;
-	ipv6_to_v4_tcpMethods.getsockname = Ipv6ToIpv4SocketGetName;
-	ipv6_to_v4_tcpMethods.getpeername = Ipv6ToIpv4SocketGetPeerName;
-/*
-	ipv6_to_v4_tcpMethods.getsocketoption = Ipv6ToIpv4GetSocketOption;
-	ipv6_to_v4_tcpMethods.setsocketoption = Ipv6ToIpv4SetSocketOption;
-*/
-	ipv6_to_v4_udpMethods = *stubMethods;  /* first get the entire batch */
-	/* then override the ones we care about */
-	ipv6_to_v4_udpMethods.connect = Ipv6ToIpv4SocketConnect;
-	ipv6_to_v4_udpMethods.bind = Ipv6ToIpv4SocketBind;
-	ipv6_to_v4_udpMethods.sendto = Ipv6ToIpv4SocketSendTo;
-	ipv6_to_v4_udpMethods.recvfrom = Ipv6ToIpv4SocketRecvFrom;
-	ipv6_to_v4_udpMethods.getsockname = Ipv6ToIpv4SocketGetName;
-	ipv6_to_v4_udpMethods.getpeername = Ipv6ToIpv4SocketGetPeerName;
-/*
-	ipv6_to_v4_udpMethods.getsocketoption = Ipv6ToIpv4GetSocketOption;
-	ipv6_to_v4_udpMethods.setsocketoption = Ipv6ToIpv4SetSocketOption;
-*/
-	return PR_SUCCESS;
-}
-
-#if defined(_PR_INET6_PROBE)
-PRBool _pr_ipv6_is_present(void)
-{
-    if (PR_CallOnce(&_pr_init_ipv6_once, _pr_init_ipv6) != PR_SUCCESS)
-        return PR_FALSE;
-    return ipv6_is_present;
-}
-#endif
-
-PR_IMPLEMENT(PRStatus) _pr_push_ipv6toipv4_layer(PRFileDesc *fd)
-{
-	PRFileDesc *ipv6_fd = NULL;
-
-	if (PR_CallOnce(&_pr_init_ipv6_once, _pr_init_ipv6) != PR_SUCCESS)
-		return PR_FAILURE;
-
-	/*
-	 * For platforms with no support for IPv6 
-	 * create layered socket for IPv4-mapped IPv6 addresses
-	 */
-	if (fd->methods->file_type == PR_DESC_SOCKET_TCP)
-		ipv6_fd = PR_CreateIOLayerStub(_pr_ipv6_to_ipv4_id,
-									&ipv6_to_v4_tcpMethods);
-	else
-		ipv6_fd = PR_CreateIOLayerStub(_pr_ipv6_to_ipv4_id,
-									&ipv6_to_v4_udpMethods);
-	if (NULL == ipv6_fd) {
-		goto errorExit;
-	} 
-	ipv6_fd->secret = NULL;
-
-	if (PR_PushIOLayer(fd, PR_TOP_IO_LAYER, ipv6_fd) == PR_FAILURE) {
-		goto errorExit;
-	}
-
-	return PR_SUCCESS;
-errorExit:
-
-	if (ipv6_fd)
-		ipv6_fd->dtor(ipv6_fd);
-	return PR_FAILURE;
-}
-
-#endif /* !defined(_PR_INET6) || defined(_PR_INET6_PROBE) */