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Unified Diff: nspr/pr/src/misc/prnetdb.c

Issue 2078763002: Delete bundled copy of NSS and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/nss@master
Patch Set: Delete bundled copy of NSS and replace with README. Created 4 years, 6 months ago
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Index: nspr/pr/src/misc/prnetdb.c
diff --git a/nspr/pr/src/misc/prnetdb.c b/nspr/pr/src/misc/prnetdb.c
deleted file mode 100644
index b2f6e435b5fb73d0547562694ee6e543615a851e..0000000000000000000000000000000000000000
--- a/nspr/pr/src/misc/prnetdb.c
+++ /dev/null
@@ -1,2342 +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/. */
-
-#include "primpl.h"
-
-#include <string.h>
-
-/*
- * 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,
- * and OSF1.
- * - _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 and IRIX.
- */
-#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(XP_BEOS) && defined(BONE_VERSION)
-#include <arpa/inet.h> /* pick up define for inet_addr */
-#include <sys/socket.h>
-#define _PR_HAVE_GETPROTO_R
-#define _PR_HAVE_GETPROTO_R_POINTER
-#endif
-
-#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(OSF1) \
- || 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 && !defined(XP_BEOS))
-#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) \
- || (defined(XP_MACOSX) && (!defined(MAC_OS_X_VERSION_10_2) || \
- MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_2))))
-
-/*
- * 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;
-}
-
-#ifdef SYMBIAN
-/* Set p_aliases by hand because Symbian's getprotobyname() returns NULL. */
-static void AssignAliases(struct protoent *Protoent, char** aliases)
-{
- if (NULL == Protoent->p_aliases) {
- if (0 == strcmp(Protoent->p_name, "ip"))
- aliases[0] = "IP";
- else if (0 == strcmp(Protoent->p_name, "tcp"))
- aliases[0] = "TCP";
- else if (0 == strcmp(Protoent->p_name, "udp"))
- aliases[0] = "UDP";
- else
- aliases[0] = "UNKNOWN";
- aliases[1] = NULL;
- Protoent->p_aliases = aliases;
- }
-}
-#endif
-
-#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_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
- {
-#if defined(SYMBIAN)
- char* aliases[2];
- AssignAliases(staticBuf, aliases);
-#endif
- 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_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
- {
-#if defined(SYMBIAN)
- char* aliases[2];
- AssignAliases(staticBuf, aliases);
-#endif
- 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)
- 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->inet));
- 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;
- } else 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;
- } else 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;
- } else 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
- * and convert it to binary.
- */
- if (val > 0x0255 || (val & 0xf0) > 0x90 || (val & 0xf) > 9) return 0;
- val = (val >> 8) * 100 + ((val >> 4) & 0xf) * 10 + (val & 0xf);
- addr->pr_s6_addr[2 * section] = val;
-
- s++;
- val = index_hex[*s++];
- if (val > 9) return 0;
- while (*s >= '0' && *s <= '9') {
- val = val * 10 + *s++ - '0';
- if (val > 255) return 0;
- }
- if (*s != '.') return 0; /* must have exactly 4 decimal numbers */
- addr->pr_s6_addr[2 * section + 1] = val;
- section++;
-
- s++;
- val = index_hex[*s++];
- if (val > 9) return 0;
- while (*s >= '0' && *s <= '9') {
- val = val * 10 + *s++ - '0';
- if (val > 255) return 0;
- }
- if (*s != '.') return 0; /* must have exactly 4 decimal numbers */
- addr->pr_s6_addr[2 * section] = val;
-
- s++;
- val = index_hex[*s++];
- if (val > 9) return 0;
- while (*s >= '0' && *s <= '9') {
- val = val * 10 + *s++ - '0';
- if (val > 255) return 0;
- }
- if (*s) return 0; /* must have exactly 4 decimal numbers */
- addr->pr_s6_addr[2 * section + 1] = val;
- section++;
- }
-
- if (double_colon != -1) {
- /* Stretch the double colon */
- int tosection;
- int ncopy = section - double_colon;
- for (tosection = 7; ncopy--; tosection--) {
- addr->pr_s6_addr16[tosection] =
- addr->pr_s6_addr16[double_colon + ncopy];
- }
- while (tosection >= double_colon) {
- addr->pr_s6_addr16[tosection--] = 0;
- }
- } else if (section != 8) {
- return 0; /* too short */
- }
- return 1;
-}
-#undef XX
-
-#ifndef _PR_HAVE_INET_NTOP
-static const char *basis_hex = "0123456789abcdef";
-
-/*
- * V6AddrToString() returns a pointer to the buffer containing
- * the text string if the conversion succeeds, and NULL otherwise.
- * (Same as inet_ntop(AF_INET6, addr, buf, size), except that errno
- * is not set on failure.)
- */
-static const char *V6AddrToString(
- const PRIPv6Addr *addr, char *buf, PRUint32 size)
-{
-#define STUFF(c) do { \
- if (!size--) return NULL; \
- *buf++ = (c); \
-} while (0)
-
- int double_colon = -1; /* index of the first 16-bit
- * group of zeros represented
- * by the double colon */
- int double_colon_length = 1; /* use double colon only if
- * there are two or more 16-bit
- * groups of zeros */
- int zero_length;
- int section;
- unsigned int val;
- const char *bufcopy = buf;
-
- /* Scan to find the placement of the double colon */
- for (section = 0; section < 8; section++) {
- if (addr->pr_s6_addr16[section] == 0) {
- zero_length = 1;
- section++;
- while (section < 8 && addr->pr_s6_addr16[section] == 0) {
- zero_length++;
- section++;
- }
- /* Select the longest sequence of zeros */
- if (zero_length > double_colon_length) {
- double_colon = section - zero_length;
- double_colon_length = zero_length;
- }
- }
- }
-
- /* Now start converting to a string */
- section = 0;
-
- if (double_colon == 0) {
- if (double_colon_length == 6 ||
- (double_colon_length == 5 && addr->pr_s6_addr16[5] == 0xffff)) {
- /* ipv4 format address */
- STUFF(':');
- STUFF(':');
- if (double_colon_length == 5) {
- STUFF('f');
- STUFF('f');
- STUFF('f');
- STUFF('f');
- STUFF(':');
- }
- if (addr->pr_s6_addr[12] > 99) STUFF(addr->pr_s6_addr[12]/100 + '0');
- if (addr->pr_s6_addr[12] > 9) STUFF((addr->pr_s6_addr[12]%100)/10 + '0');
- STUFF(addr->pr_s6_addr[12]%10 + '0');
- STUFF('.');
- if (addr->pr_s6_addr[13] > 99) STUFF(addr->pr_s6_addr[13]/100 + '0');
- if (addr->pr_s6_addr[13] > 9) STUFF((addr->pr_s6_addr[13]%100)/10 + '0');
- STUFF(addr->pr_s6_addr[13]%10 + '0');
- STUFF('.');
- if (addr->pr_s6_addr[14] > 99) STUFF(addr->pr_s6_addr[14]/100 + '0');
- if (addr->pr_s6_addr[14] > 9) STUFF((addr->pr_s6_addr[14]%100)/10 + '0');
- STUFF(addr->pr_s6_addr[14]%10 + '0');
- STUFF('.');
- if (addr->pr_s6_addr[15] > 99) STUFF(addr->pr_s6_addr[15]/100 + '0');
- if (addr->pr_s6_addr[15] > 9) STUFF((addr->pr_s6_addr[15]%100)/10 + '0');
- STUFF(addr->pr_s6_addr[15]%10 + '0');
- STUFF('\0');
- return bufcopy;
- }
- }
-
- while (section < 8) {
- if (section == double_colon) {
- STUFF(':');
- STUFF(':');
- section += double_colon_length;
- continue;
- }
- val = ntohs(addr->pr_s6_addr16[section]);
- if (val > 0xfff) {
- STUFF(basis_hex[val >> 12]);
- }
- if (val > 0xff) {
- STUFF(basis_hex[(val >> 8) & 0xf]);
- }
- if (val > 0xf) {
- STUFF(basis_hex[(val >> 4) & 0xf]);
- }
- STUFF(basis_hex[val & 0xf]);
- section++;
- if (section < 8 && section != double_colon) STUFF(':');
- }
- STUFF('\0');
- return bufcopy;
-#undef STUFF
-}
-#endif /* !_PR_HAVE_INET_NTOP */
-
-/*
- * Convert an IPv4 addr to an (IPv4-mapped) IPv6 addr
- */
-PR_IMPLEMENT(void) PR_ConvertIPv4AddrToIPv6(PRUint32 v4addr, PRIPv6Addr *v6addr)
-{
- PRUint8 *dstp;
- dstp = v6addr->pr_s6_addr;
- memset(dstp, 0, 10);
- memset(dstp + 10, 0xff, 2);
- memcpy(dstp + 12,(char *) &v4addr, 4);
-}
-
-PR_IMPLEMENT(PRUint16) PR_ntohs(PRUint16 n) { return ntohs(n); }
-PR_IMPLEMENT(PRUint32) PR_ntohl(PRUint32 n) { return ntohl(n); }
-PR_IMPLEMENT(PRUint16) PR_htons(PRUint16 n) { return htons(n); }
-PR_IMPLEMENT(PRUint32) PR_htonl(PRUint32 n) { return htonl(n); }
-PR_IMPLEMENT(PRUint64) PR_ntohll(PRUint64 n)
-{
-#ifdef IS_BIG_ENDIAN
- return n;
-#else
- PRUint64 tmp;
- PRUint32 hi, lo;
- LL_L2UI(lo, n);
- LL_SHR(tmp, n, 32);
- LL_L2UI(hi, tmp);
- hi = PR_ntohl(hi);
- lo = PR_ntohl(lo);
- LL_UI2L(n, lo);
- LL_SHL(n, n, 32);
- LL_UI2L(tmp, hi);
- LL_ADD(n, n, tmp);
- return n;
-#endif
-} /* ntohll */
-
-PR_IMPLEMENT(PRUint64) PR_htonll(PRUint64 n)
-{
-#ifdef IS_BIG_ENDIAN
- return n;
-#else
- PRUint64 tmp;
- PRUint32 hi, lo;
- LL_L2UI(lo, n);
- LL_SHR(tmp, n, 32);
- LL_L2UI(hi, tmp);
- hi = htonl(hi);
- lo = htonl(lo);
- LL_UI2L(n, lo);
- LL_SHL(n, n, 32);
- LL_UI2L(tmp, hi);
- LL_ADD(n, n, tmp);
- return n;
-#endif
-} /* htonll */
-
-
-/*
- * Implementation of PR_GetAddrInfoByName and friends
- *
- * Compile-time options:
- *
- * _PR_HAVE_GETADDRINFO Define this macro if the target system provides
- * getaddrinfo. With this defined, NSPR will require
- * getaddrinfo at run time. If this if not defined,
- * then NSPR will attempt to dynamically resolve
- * getaddrinfo, falling back to PR_GetHostByName if
- * getaddrinfo does not exist on the target system.
- *
- * Since getaddrinfo is a relatively new system call on many systems,
- * we are forced to dynamically resolve it at run time in most cases.
- * The exception includes any system (such as Mac OS X) that is known to
- * provide getaddrinfo in all versions that NSPR cares to support.
- */
-
-#if defined(_PR_HAVE_GETADDRINFO)
-
-#if defined(_PR_INET6)
-
-typedef struct addrinfo PRADDRINFO;
-#define GETADDRINFO getaddrinfo
-#define FREEADDRINFO freeaddrinfo
-#define GETNAMEINFO getnameinfo
-
-#elif defined(_PR_INET6_PROBE)
-
-typedef struct addrinfo PRADDRINFO;
-
-/* getaddrinfo/freeaddrinfo/getnameinfo prototypes */
-#if defined(WIN32)
-#define FUNC_MODIFIER __stdcall
-#else
-#define FUNC_MODIFIER
-#endif
-typedef int (FUNC_MODIFIER * FN_GETADDRINFO)
- (const char *nodename,
- const char *servname,
- const PRADDRINFO *hints,
- PRADDRINFO **res);
-typedef int (FUNC_MODIFIER * FN_FREEADDRINFO)
- (PRADDRINFO *ai);
-typedef int (FUNC_MODIFIER * FN_GETNAMEINFO)
- (const struct sockaddr *addr, int addrlen,
- char *host, int hostlen,
- char *serv, int servlen, int flags);
-
-/* global state */
-static FN_GETADDRINFO _pr_getaddrinfo = NULL;
-static FN_FREEADDRINFO _pr_freeaddrinfo = NULL;
-static FN_GETNAMEINFO _pr_getnameinfo = NULL;
-
-#define GETADDRINFO_SYMBOL "getaddrinfo"
-#define FREEADDRINFO_SYMBOL "freeaddrinfo"
-#define GETNAMEINFO_SYMBOL "getnameinfo"
-
-PRStatus
-_pr_find_getaddrinfo(void)
-{
- PRLibrary *lib;
-#ifdef WIN32
- /*
- * On windows, we need to search ws2_32.dll or wship6.dll
- * (Microsoft IPv6 Technology Preview for Windows 2000) for
- * getaddrinfo and freeaddrinfo. These libraries might not
- * be loaded yet.
- */
- const char *libname[] = { "ws2_32.dll", "wship6.dll" };
- int i;
-
- for (i = 0; i < sizeof(libname)/sizeof(libname[0]); i++) {
- lib = PR_LoadLibrary(libname[i]);
- if (!lib) {
- continue;
- }
- _pr_getaddrinfo = (FN_GETADDRINFO)
- PR_FindFunctionSymbol(lib, GETADDRINFO_SYMBOL);
- if (!_pr_getaddrinfo) {
- PR_UnloadLibrary(lib);
- continue;
- }
- _pr_freeaddrinfo = (FN_FREEADDRINFO)
- PR_FindFunctionSymbol(lib, FREEADDRINFO_SYMBOL);
- _pr_getnameinfo = (FN_GETNAMEINFO)
- PR_FindFunctionSymbol(lib, GETNAMEINFO_SYMBOL);
- if (!_pr_freeaddrinfo || !_pr_getnameinfo) {
- PR_UnloadLibrary(lib);
- continue;
- }
- /* Keep the library loaded. */
- return PR_SUCCESS;
- }
- return PR_FAILURE;
-#else
- /*
- * Resolve getaddrinfo by searching all loaded libraries. Then
- * search library containing getaddrinfo for freeaddrinfo.
- */
- _pr_getaddrinfo = (FN_GETADDRINFO)
- PR_FindFunctionSymbolAndLibrary(GETADDRINFO_SYMBOL, &lib);
- if (!_pr_getaddrinfo) {
- return PR_FAILURE;
- }
- _pr_freeaddrinfo = (FN_FREEADDRINFO)
- PR_FindFunctionSymbol(lib, FREEADDRINFO_SYMBOL);
- _pr_getnameinfo = (FN_GETNAMEINFO)
- PR_FindFunctionSymbol(lib, GETNAMEINFO_SYMBOL);
- PR_UnloadLibrary(lib);
- if (!_pr_freeaddrinfo || !_pr_getnameinfo) {
- return PR_FAILURE;
- }
- return PR_SUCCESS;
-#endif
-}
-
-#define GETADDRINFO (*_pr_getaddrinfo)
-#define FREEADDRINFO (*_pr_freeaddrinfo)
-#define GETNAMEINFO (*_pr_getnameinfo)
-
-#endif /* _PR_INET6 */
-
-#endif /* _PR_HAVE_GETADDRINFO */
-
-#if !defined(_PR_HAVE_GETADDRINFO) || defined(_PR_INET6_PROBE)
-/*
- * If getaddrinfo does not exist, then we will fall back on
- * PR_GetHostByName, which requires that we allocate a buffer for the
- * PRHostEnt data structure and its members.
- */
-typedef struct PRAddrInfoFB {
- char buf[PR_NETDB_BUF_SIZE];
- PRHostEnt hostent;
- PRBool has_cname;
-} PRAddrInfoFB;
-
-static PRAddrInfo *
-pr_GetAddrInfoByNameFB(const char *hostname,
- PRUint16 af,
- PRIntn flags)
-{
- PRStatus rv;
- PRAddrInfoFB *ai;
- /* fallback on PR_GetHostByName */
- ai = PR_NEW(PRAddrInfoFB);
- if (!ai) {
- PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
- return NULL;
- }
- rv = PR_GetHostByName(hostname, ai->buf, sizeof ai->buf, &ai->hostent);
- if (rv == PR_FAILURE) {
- PR_Free(ai);
- return NULL;
- }
- ai->has_cname = !(flags & PR_AI_NOCANONNAME);
-
- return (PRAddrInfo *) ai;
-}
-#endif /* !_PR_HAVE_GETADDRINFO || _PR_INET6_PROBE */
-
-PR_IMPLEMENT(PRAddrInfo *) PR_GetAddrInfoByName(const char *hostname,
- PRUint16 af,
- PRIntn flags)
-{
- /* restrict input to supported values */
- if ((af != PR_AF_INET && af != PR_AF_UNSPEC) ||
- (flags & ~ PR_AI_NOCANONNAME) != PR_AI_ADDRCONFIG) {
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
- return NULL;
- }
-
- if (!_pr_initialized) _PR_ImplicitInitialization();
-
-#if !defined(_PR_HAVE_GETADDRINFO)
- return pr_GetAddrInfoByNameFB(hostname, af, flags);
-#else
-#if defined(_PR_INET6_PROBE)
- if (!_pr_ipv6_is_present()) {
- return pr_GetAddrInfoByNameFB(hostname, af, flags);
- }
-#endif
- {
- PRADDRINFO *res, hints;
- int rv;
-
- /*
- * we assume a RFC 2553 compliant getaddrinfo. this may at some
- * point need to be customized as platforms begin to adopt the
- * RFC 3493.
- */
-
- memset(&hints, 0, sizeof(hints));
- if (!(flags & PR_AI_NOCANONNAME))
- hints.ai_flags |= AI_CANONNAME;
-#ifdef AI_ADDRCONFIG
- /*
- * Propagate AI_ADDRCONFIG to the GETADDRINFO call if PR_AI_ADDRCONFIG
- * is set.
- *
- * Need a workaround for loopback host addresses:
- * The problem is that in glibc and Windows, AI_ADDRCONFIG applies the
- * existence of an outgoing network interface to IP addresses of the
- * loopback interface, due to a strict interpretation of the
- * specification. For example, if a computer does not have any
- * outgoing IPv6 network interface, but its loopback network interface
- * supports IPv6, a getaddrinfo call on "localhost" with AI_ADDRCONFIG
- * won't return the IPv6 loopback address "::1", because getaddrinfo
- * thinks the computer cannot connect to any IPv6 destination,
- * ignoring the remote vs. local/loopback distinction.
- */
- if ((flags & PR_AI_ADDRCONFIG) &&
- strcmp(hostname, "localhost") != 0 &&
- strcmp(hostname, "localhost.localdomain") != 0 &&
- strcmp(hostname, "localhost6") != 0 &&
- strcmp(hostname, "localhost6.localdomain6") != 0) {
- hints.ai_flags |= AI_ADDRCONFIG;
- }
-#endif
- hints.ai_family = (af == PR_AF_INET) ? AF_INET : AF_UNSPEC;
-
- /*
- * it is important to select a socket type in the hints, otherwise we
- * will get back repetitive entries: one for each socket type. since
- * we do not expose ai_socktype through our API, it is okay to do this
- * here. the application may still choose to create a socket of some
- * other type.
- */
- hints.ai_socktype = SOCK_STREAM;
-
- rv = GETADDRINFO(hostname, NULL, &hints, &res);
-#ifdef AI_ADDRCONFIG
- if (rv == EAI_BADFLAGS && (hints.ai_flags & AI_ADDRCONFIG)) {
- hints.ai_flags &= ~AI_ADDRCONFIG;
- rv = GETADDRINFO(hostname, NULL, &hints, &res);
- }
-#endif
- if (rv == 0)
- return (PRAddrInfo *) res;
-
- PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, rv);
- }
- return NULL;
-#endif
-}
-
-PR_IMPLEMENT(void) PR_FreeAddrInfo(PRAddrInfo *ai)
-{
-#if defined(_PR_HAVE_GETADDRINFO)
-#if defined(_PR_INET6_PROBE)
- if (!_pr_ipv6_is_present())
- PR_Free((PRAddrInfoFB *) ai);
- else
-#endif
- FREEADDRINFO((PRADDRINFO *) ai);
-#else
- PR_Free((PRAddrInfoFB *) ai);
-#endif
-}
-
-PR_IMPLEMENT(void *) PR_EnumerateAddrInfo(void *iterPtr,
- const PRAddrInfo *base,
- PRUint16 port,
- PRNetAddr *result)
-{
-#if defined(_PR_HAVE_GETADDRINFO)
- PRADDRINFO *ai;
-#if defined(_PR_INET6_PROBE)
- if (!_pr_ipv6_is_present()) {
- /* using PRAddrInfoFB */
- PRIntn iter = (PRIntn)(PRPtrdiff) iterPtr;
- iter = PR_EnumerateHostEnt(iter, &((PRAddrInfoFB *) base)->hostent, port, result);
- if (iter < 0)
- iter = 0;
- return (void *)(PRPtrdiff) iter;
- }
-#endif
-
- if (iterPtr)
- ai = ((PRADDRINFO *) iterPtr)->ai_next;
- else
- ai = (PRADDRINFO *) base;
-
- while (ai && ai->ai_addrlen > sizeof(PRNetAddr))
- ai = ai->ai_next;
-
- if (ai) {
- /* copy sockaddr to PRNetAddr */
- memcpy(result, ai->ai_addr, ai->ai_addrlen);
- result->raw.family = ai->ai_addr->sa_family;
-#ifdef _PR_INET6
- if (AF_INET6 == result->raw.family)
- result->raw.family = PR_AF_INET6;
-#endif
- if (ai->ai_addrlen < sizeof(PRNetAddr))
- memset(((char*)result)+ai->ai_addrlen, 0, sizeof(PRNetAddr) - ai->ai_addrlen);
-
- if (result->raw.family == PR_AF_INET)
- result->inet.port = htons(port);
- else
- result->ipv6.port = htons(port);
- }
-
- return ai;
-#else
- /* using PRAddrInfoFB */
- PRIntn iter = (PRIntn) iterPtr;
- iter = PR_EnumerateHostEnt(iter, &((PRAddrInfoFB *) base)->hostent, port, result);
- if (iter < 0)
- iter = 0;
- return (void *) iter;
-#endif
-}
-
-PR_IMPLEMENT(const char *) PR_GetCanonNameFromAddrInfo(const PRAddrInfo *ai)
-{
-#if defined(_PR_HAVE_GETADDRINFO)
-#if defined(_PR_INET6_PROBE)
- if (!_pr_ipv6_is_present()) {
- const PRAddrInfoFB *fb = (const PRAddrInfoFB *) ai;
- return fb->has_cname ? fb->hostent.h_name : NULL;
- }
-#endif
- return ((const PRADDRINFO *) ai)->ai_canonname;
-#else
- const PRAddrInfoFB *fb = (const PRAddrInfoFB *) ai;
- return fb->has_cname ? fb->hostent.h_name : NULL;
-#endif
-}
-
-#if defined(_PR_HAVE_GETADDRINFO)
-static PRStatus pr_StringToNetAddrGAI(const char *string, PRNetAddr *addr)
-{
- PRADDRINFO *res, hints;
- int rv; /* 0 for success, or the error code EAI_xxx */
- PRNetAddr laddr;
- PRStatus status = PR_SUCCESS;
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_flags = AI_NUMERICHOST;
- hints.ai_family = AF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
-
- rv = GETADDRINFO(string, NULL, &hints, &res);
- if (rv != 0)
- {
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, rv);
- return PR_FAILURE;
- }
-
- /* pick up the first addr */
- memcpy(&laddr, res->ai_addr, res->ai_addrlen);
- if (AF_INET6 == res->ai_addr->sa_family)
- {
- addr->ipv6.family = PR_AF_INET6;
- addr->ipv6.ip = laddr.ipv6.ip;
- addr->ipv6.scope_id = laddr.ipv6.scope_id;
- }
- else if (AF_INET == res->ai_addr->sa_family)
- {
- addr->inet.family = PR_AF_INET;
- addr->inet.ip = laddr.inet.ip;
- }
- else
- {
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
- status = PR_FAILURE;
- }
-
- FREEADDRINFO(res);
- return status;
-}
-#endif /* _PR_HAVE_GETADDRINFO */
-
-static PRStatus pr_StringToNetAddrFB(const char *string, PRNetAddr *addr)
-{
- PRIntn rv;
-
- rv = pr_inet_aton(string, &addr->inet.ip);
- if (1 == rv)
- {
- addr->raw.family = AF_INET;
- return PR_SUCCESS;
- }
-
- PR_ASSERT(0 == rv);
- /* clean up after the failed call */
- memset(&addr->inet.ip, 0, sizeof(addr->inet.ip));
-
- rv = StringToV6Addr(string, &addr->ipv6.ip);
- if (1 == rv)
- {
- addr->raw.family = PR_AF_INET6;
- return PR_SUCCESS;
- }
-
- PR_ASSERT(0 == rv);
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
- return PR_FAILURE;
-}
-
-PR_IMPLEMENT(PRStatus) PR_StringToNetAddr(const char *string, PRNetAddr *addr)
-{
- if (!_pr_initialized) _PR_ImplicitInitialization();
-
- if (!addr || !string || !*string)
- {
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
- return PR_FAILURE;
- }
-
-#if !defined(_PR_HAVE_GETADDRINFO)
- return pr_StringToNetAddrFB(string, addr);
-#else
- /*
- * getaddrinfo with AI_NUMERICHOST is much slower than pr_inet_aton on some
- * platforms, such as Mac OS X (bug 404399), Linux glibc 2.10 (bug 344809),
- * and most likely others. So we only use it to convert literal IP addresses
- * that contain IPv6 scope IDs, which pr_inet_aton cannot convert.
- */
- if (!strchr(string, '%'))
- return pr_StringToNetAddrFB(string, addr);
-
-#if defined(_PR_INET6_PROBE)
- if (!_pr_ipv6_is_present())
- return pr_StringToNetAddrFB(string, addr);
-#endif
-
- return pr_StringToNetAddrGAI(string, addr);
-#endif
-}
-
-#if defined(_PR_HAVE_GETADDRINFO)
-static PRStatus pr_NetAddrToStringGNI(
- const PRNetAddr *addr, char *string, PRUint32 size)
-{
- int addrlen;
- const PRNetAddr *addrp = addr;
-#if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
- PRUint16 md_af = addr->raw.family;
- PRNetAddr addrcopy;
-#endif
- int rv; /* 0 for success, or the error code EAI_xxx */
-
-#ifdef _PR_INET6
- if (addr->raw.family == PR_AF_INET6)
- {
- md_af = AF_INET6;
-#ifndef _PR_HAVE_SOCKADDR_LEN
- addrcopy = *addr;
- addrcopy.raw.family = md_af;
- addrp = &addrcopy;
-#endif
- }
-#endif
-
- addrlen = PR_NETADDR_SIZE(addr);
-#ifdef _PR_HAVE_SOCKADDR_LEN
- addrcopy = *addr;
- ((struct sockaddr*)&addrcopy)->sa_len = addrlen;
- ((struct sockaddr*)&addrcopy)->sa_family = md_af;
- addrp = &addrcopy;
-#endif
- rv = GETNAMEINFO((const struct sockaddr *)addrp, addrlen,
- string, size, NULL, 0, NI_NUMERICHOST);
- if (rv != 0)
- {
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, rv);
- return PR_FAILURE;
- }
- return PR_SUCCESS;
-}
-#endif /* _PR_HAVE_GETADDRINFO */
-
-#if !defined(_PR_HAVE_GETADDRINFO) || defined(_PR_INET6_PROBE)
-static PRStatus pr_NetAddrToStringFB(
- const PRNetAddr *addr, char *string, PRUint32 size)
-{
- if (PR_AF_INET6 == addr->raw.family)
- {
-#if defined(_PR_HAVE_INET_NTOP)
- if (NULL == inet_ntop(AF_INET6, &addr->ipv6.ip, string, size))
-#else
- if (NULL == V6AddrToString(&addr->ipv6.ip, string, size))
-#endif
- {
- /* the size of the result buffer is inadequate */
- PR_SetError(PR_BUFFER_OVERFLOW_ERROR, 0);
- return PR_FAILURE;
- }
- }
- else
- {
- if (size < 16) goto failed;
- if (AF_INET != addr->raw.family) goto failed;
- else
- {
- unsigned char *byte = (unsigned char*)&addr->inet.ip;
- PR_snprintf(string, size, "%u.%u.%u.%u",
- byte[0], byte[1], byte[2], byte[3]);
- }
- }
-
- return PR_SUCCESS;
-
-failed:
- PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
- return PR_FAILURE;
-
-} /* pr_NetAddrToStringFB */
-#endif /* !_PR_HAVE_GETADDRINFO || _PR_INET6_PROBE */
-
-PR_IMPLEMENT(PRStatus) PR_NetAddrToString(
- const PRNetAddr *addr, char *string, PRUint32 size)
-{
- if (!_pr_initialized) _PR_ImplicitInitialization();
-
-#if !defined(_PR_HAVE_GETADDRINFO)
- return pr_NetAddrToStringFB(addr, string, size);
-#else
-#if defined(_PR_INET6_PROBE)
- if (!_pr_ipv6_is_present())
- return pr_NetAddrToStringFB(addr, string, size);
-#endif
- return pr_NetAddrToStringGNI(addr, string, size);
-#endif
-} /* PR_NetAddrToString */
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