+++ /dev/null
-/*
- * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include <assert.h>
-#include <string.h>
-
-#include "bio_lcl.h"
-#include <openssl/crypto.h>
-
-#ifndef OPENSSL_NO_SOCK
-#include <openssl/err.h>
-#include <openssl/buffer.h>
-#include "internal/thread_once.h"
-
-CRYPTO_RWLOCK *bio_lookup_lock;
-static CRYPTO_ONCE bio_lookup_init = CRYPTO_ONCE_STATIC_INIT;
-
-/*
- * Throughout this file and bio_lcl.h, the existence of the macro
- * AI_PASSIVE is used to detect the availability of struct addrinfo,
- * getnameinfo() and getaddrinfo(). If that macro doesn't exist,
- * we use our own implementation instead, using gethostbyname,
- * getservbyname and a few other.
- */
-
-/**********************************************************************
- *
- * Address structure
- *
- */
-
-BIO_ADDR *BIO_ADDR_new(void)
-{
- BIO_ADDR *ret = OPENSSL_zalloc(sizeof(*ret));
-
- if (ret == NULL) {
- BIOerr(BIO_F_BIO_ADDR_NEW, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- ret->sa.sa_family = AF_UNSPEC;
- return ret;
-}
-
-void BIO_ADDR_free(BIO_ADDR *ap)
-{
- OPENSSL_free(ap);
-}
-
-void BIO_ADDR_clear(BIO_ADDR *ap)
-{
- memset(ap, 0, sizeof(*ap));
- ap->sa.sa_family = AF_UNSPEC;
-}
-
-/*
- * BIO_ADDR_make - non-public routine to fill a BIO_ADDR with the contents
- * of a struct sockaddr.
- */
-int BIO_ADDR_make(BIO_ADDR *ap, const struct sockaddr *sa)
-{
- if (sa->sa_family == AF_INET) {
- memcpy(&(ap->s_in), sa, sizeof(struct sockaddr_in));
- return 1;
- }
-#ifdef AF_INET6
- if (sa->sa_family == AF_INET6) {
- memcpy(&(ap->s_in6), sa, sizeof(struct sockaddr_in6));
- return 1;
- }
-#endif
-#ifdef AF_UNIX
- if (sa->sa_family == AF_UNIX) {
- memcpy(&(ap->s_un), sa, sizeof(struct sockaddr_un));
- return 1;
- }
-#endif
-
- return 0;
-}
-
-int BIO_ADDR_rawmake(BIO_ADDR *ap, int family,
- const void *where, size_t wherelen,
- unsigned short port)
-{
-#ifdef AF_UNIX
- if (family == AF_UNIX) {
- if (wherelen + 1 > sizeof(ap->s_un.sun_path))
- return 0;
- memset(&ap->s_un, 0, sizeof(ap->s_un));
- ap->s_un.sun_family = family;
- strncpy(ap->s_un.sun_path, where, sizeof(ap->s_un.sun_path) - 1);
- return 1;
- }
-#endif
- if (family == AF_INET) {
- if (wherelen != sizeof(struct in_addr))
- return 0;
- memset(&ap->s_in, 0, sizeof(ap->s_in));
- ap->s_in.sin_family = family;
- ap->s_in.sin_port = port;
- ap->s_in.sin_addr = *(struct in_addr *)where;
- return 1;
- }
-#ifdef AF_INET6
- if (family == AF_INET6) {
- if (wherelen != sizeof(struct in6_addr))
- return 0;
- memset(&ap->s_in6, 0, sizeof(ap->s_in6));
- ap->s_in6.sin6_family = family;
- ap->s_in6.sin6_port = port;
- ap->s_in6.sin6_addr = *(struct in6_addr *)where;
- return 1;
- }
-#endif
-
- return 0;
-}
-
-int BIO_ADDR_family(const BIO_ADDR *ap)
-{
- return ap->sa.sa_family;
-}
-
-int BIO_ADDR_rawaddress(const BIO_ADDR *ap, void *p, size_t *l)
-{
- size_t len = 0;
- const void *addrptr = NULL;
-
- if (ap->sa.sa_family == AF_INET) {
- len = sizeof(ap->s_in.sin_addr);
- addrptr = &ap->s_in.sin_addr;
- }
-#ifdef AF_INET6
- else if (ap->sa.sa_family == AF_INET6) {
- len = sizeof(ap->s_in6.sin6_addr);
- addrptr = &ap->s_in6.sin6_addr;
- }
-#endif
-#ifdef AF_UNIX
- else if (ap->sa.sa_family == AF_UNIX) {
- len = strlen(ap->s_un.sun_path);
- addrptr = &ap->s_un.sun_path;
- }
-#endif
-
- if (addrptr == NULL)
- return 0;
-
- if (p != NULL) {
- memcpy(p, addrptr, len);
- }
- if (l != NULL)
- *l = len;
-
- return 1;
-}
-
-unsigned short BIO_ADDR_rawport(const BIO_ADDR *ap)
-{
- if (ap->sa.sa_family == AF_INET)
- return ap->s_in.sin_port;
-#ifdef AF_INET6
- if (ap->sa.sa_family == AF_INET6)
- return ap->s_in6.sin6_port;
-#endif
- return 0;
-}
-
-/*-
- * addr_strings - helper function to get host and service names
- * @ap: the BIO_ADDR that has the input info
- * @numeric: 0 if actual names should be returned, 1 if the numeric
- * representation should be returned.
- * @hostname: a pointer to a pointer to a memory area to store the
- * host name or numeric representation. Unused if NULL.
- * @service: a pointer to a pointer to a memory area to store the
- * service name or numeric representation. Unused if NULL.
- *
- * The return value is 0 on failure, with the error code in the error
- * stack, and 1 on success.
- */
-static int addr_strings(const BIO_ADDR *ap, int numeric,
- char **hostname, char **service)
-{
- if (BIO_sock_init() != 1)
- return 0;
-
- if (1) {
-#ifdef AI_PASSIVE
- int ret = 0;
- char host[NI_MAXHOST] = "", serv[NI_MAXSERV] = "";
- int flags = 0;
-
- if (numeric)
- flags |= NI_NUMERICHOST | NI_NUMERICSERV;
-
- if ((ret = getnameinfo(BIO_ADDR_sockaddr(ap),
- BIO_ADDR_sockaddr_size(ap),
- host, sizeof(host), serv, sizeof(serv),
- flags)) != 0) {
-# ifdef EAI_SYSTEM
- if (ret == EAI_SYSTEM) {
- SYSerr(SYS_F_GETNAMEINFO, get_last_socket_error());
- BIOerr(BIO_F_ADDR_STRINGS, ERR_R_SYS_LIB);
- } else
-# endif
- {
- BIOerr(BIO_F_ADDR_STRINGS, ERR_R_SYS_LIB);
- ERR_add_error_data(1, gai_strerror(ret));
- }
- return 0;
- }
-
- /* VMS getnameinfo() has a bug, it doesn't fill in serv, which
- * leaves it with whatever garbage that happens to be there.
- * However, we initialise serv with the empty string (serv[0]
- * is therefore NUL), so it gets real easy to detect when things
- * didn't go the way one might expect.
- */
- if (serv[0] == '\0') {
- BIO_snprintf(serv, sizeof(serv), "%d",
- ntohs(BIO_ADDR_rawport(ap)));
- }
-
- if (hostname != NULL)
- *hostname = OPENSSL_strdup(host);
- if (service != NULL)
- *service = OPENSSL_strdup(serv);
- } else {
-#endif
- if (hostname != NULL)
- *hostname = OPENSSL_strdup(inet_ntoa(ap->s_in.sin_addr));
- if (service != NULL) {
- char serv[6]; /* port is 16 bits => max 5 decimal digits */
- BIO_snprintf(serv, sizeof(serv), "%d", ntohs(ap->s_in.sin_port));
- *service = OPENSSL_strdup(serv);
- }
- }
-
- if ((hostname != NULL && *hostname == NULL)
- || (service != NULL && *service == NULL)) {
- if (hostname != NULL) {
- OPENSSL_free(*hostname);
- *hostname = NULL;
- }
- if (service != NULL) {
- OPENSSL_free(*service);
- *service = NULL;
- }
- BIOerr(BIO_F_ADDR_STRINGS, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- return 1;
-}
-
-char *BIO_ADDR_hostname_string(const BIO_ADDR *ap, int numeric)
-{
- char *hostname = NULL;
-
- if (addr_strings(ap, numeric, &hostname, NULL))
- return hostname;
-
- return NULL;
-}
-
-char *BIO_ADDR_service_string(const BIO_ADDR *ap, int numeric)
-{
- char *service = NULL;
-
- if (addr_strings(ap, numeric, NULL, &service))
- return service;
-
- return NULL;
-}
-
-char *BIO_ADDR_path_string(const BIO_ADDR *ap)
-{
-#ifdef AF_UNIX
- if (ap->sa.sa_family == AF_UNIX)
- return OPENSSL_strdup(ap->s_un.sun_path);
-#endif
- return NULL;
-}
-
-/*
- * BIO_ADDR_sockaddr - non-public routine to return the struct sockaddr
- * for a given BIO_ADDR. In reality, this is simply a type safe cast.
- * The returned struct sockaddr is const, so it can't be tampered with.
- */
-const struct sockaddr *BIO_ADDR_sockaddr(const BIO_ADDR *ap)
-{
- return &(ap->sa);
-}
-
-/*
- * BIO_ADDR_sockaddr_noconst - non-public function that does the same
- * as BIO_ADDR_sockaddr, but returns a non-const. USE WITH CARE, as
- * it allows you to tamper with the data (and thereby the contents
- * of the input BIO_ADDR).
- */
-struct sockaddr *BIO_ADDR_sockaddr_noconst(BIO_ADDR *ap)
-{
- return &(ap->sa);
-}
-
-/*
- * BIO_ADDR_sockaddr_size - non-public function that returns the size
- * of the struct sockaddr the BIO_ADDR is using. If the protocol family
- * isn't set or is something other than AF_INET, AF_INET6 or AF_UNIX,
- * the size of the BIO_ADDR type is returned.
- */
-socklen_t BIO_ADDR_sockaddr_size(const BIO_ADDR *ap)
-{
- if (ap->sa.sa_family == AF_INET)
- return sizeof(ap->s_in);
-#ifdef AF_INET6
- if (ap->sa.sa_family == AF_INET6)
- return sizeof(ap->s_in6);
-#endif
-#ifdef AF_UNIX
- if (ap->sa.sa_family == AF_UNIX)
- return sizeof(ap->s_un);
-#endif
- return sizeof(*ap);
-}
-
-/**********************************************************************
- *
- * Address info database
- *
- */
-
-const BIO_ADDRINFO *BIO_ADDRINFO_next(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL)
- return bai->bai_next;
- return NULL;
-}
-
-int BIO_ADDRINFO_family(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL)
- return bai->bai_family;
- return 0;
-}
-
-int BIO_ADDRINFO_socktype(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL)
- return bai->bai_socktype;
- return 0;
-}
-
-int BIO_ADDRINFO_protocol(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL) {
- if (bai->bai_protocol != 0)
- return bai->bai_protocol;
-
-#ifdef AF_UNIX
- if (bai->bai_family == AF_UNIX)
- return 0;
-#endif
-
- switch (bai->bai_socktype) {
- case SOCK_STREAM:
- return IPPROTO_TCP;
- case SOCK_DGRAM:
- return IPPROTO_UDP;
- default:
- break;
- }
- }
- return 0;
-}
-
-/*
- * BIO_ADDRINFO_sockaddr_size - non-public function that returns the size
- * of the struct sockaddr inside the BIO_ADDRINFO.
- */
-socklen_t BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL)
- return bai->bai_addrlen;
- return 0;
-}
-
-/*
- * BIO_ADDRINFO_sockaddr - non-public function that returns bai_addr
- * as the struct sockaddr it is.
- */
-const struct sockaddr *BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL)
- return bai->bai_addr;
- return NULL;
-}
-
-const BIO_ADDR *BIO_ADDRINFO_address(const BIO_ADDRINFO *bai)
-{
- if (bai != NULL)
- return (BIO_ADDR *)bai->bai_addr;
- return NULL;
-}
-
-void BIO_ADDRINFO_free(BIO_ADDRINFO *bai)
-{
- if (bai == NULL)
- return;
-
-#ifdef AI_PASSIVE
-# ifdef AF_UNIX
-# define _cond bai->bai_family != AF_UNIX
-# else
-# define _cond 1
-# endif
- if (_cond) {
- freeaddrinfo(bai);
- return;
- }
-#endif
-
- /* Free manually when we know that addrinfo_wrap() was used.
- * See further comment above addrinfo_wrap()
- */
- while (bai != NULL) {
- BIO_ADDRINFO *next = bai->bai_next;
- OPENSSL_free(bai->bai_addr);
- OPENSSL_free(bai);
- bai = next;
- }
-}
-
-/**********************************************************************
- *
- * Service functions
- *
- */
-
-/*-
- * The specs in hostserv can take these forms:
- *
- * host:service => *host = "host", *service = "service"
- * host:* => *host = "host", *service = NULL
- * host: => *host = "host", *service = NULL
- * :service => *host = NULL, *service = "service"
- * *:service => *host = NULL, *service = "service"
- *
- * in case no : is present in the string, the result depends on
- * hostserv_prio, as follows:
- *
- * when hostserv_prio == BIO_PARSE_PRIO_HOST
- * host => *host = "host", *service untouched
- *
- * when hostserv_prio == BIO_PARSE_PRIO_SERV
- * service => *host untouched, *service = "service"
- *
- */
-int BIO_parse_hostserv(const char *hostserv, char **host, char **service,
- enum BIO_hostserv_priorities hostserv_prio)
-{
- const char *h = NULL; size_t hl = 0;
- const char *p = NULL; size_t pl = 0;
-
- if (*hostserv == '[') {
- if ((p = strchr(hostserv, ']')) == NULL)
- goto spec_err;
- h = hostserv + 1;
- hl = p - h;
- p++;
- if (*p == '\0')
- p = NULL;
- else if (*p != ':')
- goto spec_err;
- else {
- p++;
- pl = strlen(p);
- }
- } else {
- const char *p2 = strrchr(hostserv, ':');
- p = strchr(hostserv, ':');
-
- /*-
- * Check for more than one colon. There are three possible
- * interpretations:
- * 1. IPv6 address with port number, last colon being separator.
- * 2. IPv6 address only.
- * 3. IPv6 address only if hostserv_prio == BIO_PARSE_PRIO_HOST,
- * IPv6 address and port number if hostserv_prio == BIO_PARSE_PRIO_SERV
- * Because of this ambiguity, we currently choose to make it an
- * error.
- */
- if (p != p2)
- goto amb_err;
-
- if (p != NULL) {
- h = hostserv;
- hl = p - h;
- p++;
- pl = strlen(p);
- } else if (hostserv_prio == BIO_PARSE_PRIO_HOST) {
- h = hostserv;
- hl = strlen(h);
- } else {
- p = hostserv;
- pl = strlen(p);
- }
- }
-
- if (p != NULL && strchr(p, ':'))
- goto spec_err;
-
- if (h != NULL && host != NULL) {
- if (hl == 0
- || (hl == 1 && h[0] == '*')) {
- *host = NULL;
- } else {
- *host = OPENSSL_strndup(h, hl);
- if (*host == NULL)
- goto memerr;
- }
- }
- if (p != NULL && service != NULL) {
- if (pl == 0
- || (pl == 1 && p[0] == '*')) {
- *service = NULL;
- } else {
- *service = OPENSSL_strndup(p, pl);
- if (*service == NULL)
- goto memerr;
- }
- }
-
- return 1;
- amb_err:
- BIOerr(BIO_F_BIO_PARSE_HOSTSERV, BIO_R_AMBIGUOUS_HOST_OR_SERVICE);
- return 0;
- spec_err:
- BIOerr(BIO_F_BIO_PARSE_HOSTSERV, BIO_R_MALFORMED_HOST_OR_SERVICE);
- return 0;
- memerr:
- BIOerr(BIO_F_BIO_PARSE_HOSTSERV, ERR_R_MALLOC_FAILURE);
- return 0;
-}
-
-/* addrinfo_wrap is used to build our own addrinfo "chain".
- * (it has only one entry, so calling it a chain may be a stretch)
- * It should ONLY be called when getaddrinfo() and friends
- * aren't available, OR when dealing with a non IP protocol
- * family, such as AF_UNIX
- *
- * the return value is 1 on success, or 0 on failure, which
- * only happens if a memory allocation error occurred.
- */
-static int addrinfo_wrap(int family, int socktype,
- const void *where, size_t wherelen,
- unsigned short port,
- BIO_ADDRINFO **bai)
-{
- if ((*bai = OPENSSL_zalloc(sizeof(**bai))) == NULL) {
- BIOerr(BIO_F_ADDRINFO_WRAP, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- (*bai)->bai_family = family;
- (*bai)->bai_socktype = socktype;
- if (socktype == SOCK_STREAM)
- (*bai)->bai_protocol = IPPROTO_TCP;
- if (socktype == SOCK_DGRAM)
- (*bai)->bai_protocol = IPPROTO_UDP;
-#ifdef AF_UNIX
- if (family == AF_UNIX)
- (*bai)->bai_protocol = 0;
-#endif
- {
- /* Magic: We know that BIO_ADDR_sockaddr_noconst is really
- just an advanced cast of BIO_ADDR* to struct sockaddr *
- by the power of union, so while it may seem that we're
- creating a memory leak here, we are not. It will be
- all right. */
- BIO_ADDR *addr = BIO_ADDR_new();
- if (addr != NULL) {
- BIO_ADDR_rawmake(addr, family, where, wherelen, port);
- (*bai)->bai_addr = BIO_ADDR_sockaddr_noconst(addr);
- }
- }
- (*bai)->bai_next = NULL;
- if ((*bai)->bai_addr == NULL) {
- BIO_ADDRINFO_free(*bai);
- *bai = NULL;
- return 0;
- }
- return 1;
-}
-
-DEFINE_RUN_ONCE_STATIC(do_bio_lookup_init)
-{
- if (!OPENSSL_init_crypto(0, NULL))
- return 0;
- bio_lookup_lock = CRYPTO_THREAD_lock_new();
- return bio_lookup_lock != NULL;
-}
-
-int BIO_lookup(const char *host, const char *service,
- enum BIO_lookup_type lookup_type,
- int family, int socktype, BIO_ADDRINFO **res)
-{
- return BIO_lookup_ex(host, service, lookup_type, family, socktype, 0, res);
-}
-
-/*-
- * BIO_lookup_ex - look up the node and service you want to connect to.
- * @node: the node you want to connect to.
- * @service: the service you want to connect to.
- * @lookup_type: declare intent with the result, client or server.
- * @family: the address family you want to use. Use AF_UNSPEC for any, or
- * AF_INET, AF_INET6 or AF_UNIX.
- * @socktype: The socket type you want to use. Can be SOCK_STREAM, SOCK_DGRAM
- * or 0 for all.
- * @protocol: The protocol to use, e.g. IPPROTO_TCP or IPPROTO_UDP or 0 for all.
- * Note that some platforms may not return IPPROTO_SCTP without
- * explicitly requesting it (i.e. IPPROTO_SCTP may not be returned
- * with 0 for the protocol)
- * @res: Storage place for the resulting list of returned addresses
- *
- * This will do a lookup of the node and service that you want to connect to.
- * It returns a linked list of different addresses you can try to connect to.
- *
- * When no longer needed you should call BIO_ADDRINFO_free() to free the result.
- *
- * The return value is 1 on success or 0 in case of error.
- */
-int BIO_lookup_ex(const char *host, const char *service, int lookup_type,
- int family, int socktype, int protocol, BIO_ADDRINFO **res)
-{
- int ret = 0; /* Assume failure */
-
- switch(family) {
- case AF_INET:
-#ifdef AF_INET6
- case AF_INET6:
-#endif
-#ifdef AF_UNIX
- case AF_UNIX:
-#endif
-#ifdef AF_UNSPEC
- case AF_UNSPEC:
-#endif
- break;
- default:
- BIOerr(BIO_F_BIO_LOOKUP_EX, BIO_R_UNSUPPORTED_PROTOCOL_FAMILY);
- return 0;
- }
-
-#ifdef AF_UNIX
- if (family == AF_UNIX) {
- if (addrinfo_wrap(family, socktype, host, strlen(host), 0, res))
- return 1;
- else
- BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-#endif
-
- if (BIO_sock_init() != 1)
- return 0;
-
- if (1) {
-#ifdef AI_PASSIVE
- int gai_ret = 0;
- struct addrinfo hints;
-
- memset(&hints, 0, sizeof(hints));
-
- hints.ai_family = family;
- hints.ai_socktype = socktype;
- hints.ai_protocol = protocol;
-#ifdef AI_ADDRCONFIG
-#ifdef AF_UNSPEC
- if (family == AF_UNSPEC)
-#endif
- hints.ai_flags |= AI_ADDRCONFIG;
-#endif
-
- if (lookup_type == BIO_LOOKUP_SERVER)
- hints.ai_flags |= AI_PASSIVE;
-
- /* Note that |res| SHOULD be a 'struct addrinfo **' thanks to
- * macro magic in bio_lcl.h
- */
- retry:
- switch ((gai_ret = getaddrinfo(host, service, &hints, res))) {
-# ifdef EAI_SYSTEM
- case EAI_SYSTEM:
- SYSerr(SYS_F_GETADDRINFO, get_last_socket_error());
- BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_SYS_LIB);
- break;
-# endif
- case 0:
- ret = 1; /* Success */
- break;
-# if (defined(EAI_FAMILY) || defined(EAI_ADDRFAMILY)) && defined(AI_ADDRCONFIG)
-# ifdef EAI_FAMILY
- case EAI_FAMILY:
-# endif
-# ifdef EAI_ADDRFAMILY
- case EAI_ADDRFAMILY:
-# endif
- if (hints.ai_flags & AI_ADDRCONFIG) {
- hints.ai_flags &= ~AI_ADDRCONFIG;
- goto retry;
- }
- /* fall through */
-# endif
- default:
- BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_SYS_LIB);
- ERR_add_error_data(1, gai_strerror(gai_ret));
- break;
- }
- } else {
-#endif
- const struct hostent *he;
-/*
- * Because struct hostent is defined for 32-bit pointers only with
- * VMS C, we need to make sure that '&he_fallback_address' and
- * '&he_fallback_addresses' are 32-bit pointers
- */
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma pointer_size save
-# pragma pointer_size 32
-#endif
- /* Windows doesn't seem to have in_addr_t */
-#ifdef OPENSSL_SYS_WINDOWS
- static uint32_t he_fallback_address;
- static const char *he_fallback_addresses[] =
- { (char *)&he_fallback_address, NULL };
-#else
- static in_addr_t he_fallback_address;
- static const char *he_fallback_addresses[] =
- { (char *)&he_fallback_address, NULL };
-#endif
- static const struct hostent he_fallback =
- { NULL, NULL, AF_INET, sizeof(he_fallback_address),
- (char **)&he_fallback_addresses };
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma pointer_size restore
-#endif
-
- struct servent *se;
- /* Apparently, on WIN64, s_proto and s_port have traded places... */
-#ifdef _WIN64
- struct servent se_fallback = { NULL, NULL, NULL, 0 };
-#else
- struct servent se_fallback = { NULL, NULL, 0, NULL };
-#endif
-
- if (!RUN_ONCE(&bio_lookup_init, do_bio_lookup_init)) {
- BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_MALLOC_FAILURE);
- ret = 0;
- goto err;
- }
-
- CRYPTO_THREAD_write_lock(bio_lookup_lock);
- he_fallback_address = INADDR_ANY;
- if (host == NULL) {
- he = &he_fallback;
- switch(lookup_type) {
- case BIO_LOOKUP_CLIENT:
- he_fallback_address = INADDR_LOOPBACK;
- break;
- case BIO_LOOKUP_SERVER:
- he_fallback_address = INADDR_ANY;
- break;
- default:
- /* We forgot to handle a lookup type! */
- assert("We forgot to handle a lookup type!" == NULL);
- BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_INTERNAL_ERROR);
- ret = 0;
- goto err;
- }
- } else {
- he = gethostbyname(host);
-
- if (he == NULL) {
-#ifndef OPENSSL_SYS_WINDOWS
- /*
- * This might be misleading, because h_errno is used as if
- * it was errno. To minimize mixup add 1000. Underlying
- * reason for this is that hstrerror is declared obsolete,
- * not to mention that a) h_errno is not always guaranteed
- * to be meaningless; b) hstrerror can reside in yet another
- * library, linking for sake of hstrerror is an overkill;
- * c) this path is not executed on contemporary systems
- * anyway [above getaddrinfo/gai_strerror is]. We just let
- * system administrator figure this out...
- */
-# if defined(OPENSSL_SYS_VXWORKS)
- /* h_errno doesn't exist on VxWorks */
- SYSerr(SYS_F_GETHOSTBYNAME, 1000 );
-# else
- SYSerr(SYS_F_GETHOSTBYNAME, 1000 + h_errno);
-# endif
-#else
- SYSerr(SYS_F_GETHOSTBYNAME, WSAGetLastError());
-#endif
- ret = 0;
- goto err;
- }
- }
-
- if (service == NULL) {
- se_fallback.s_port = 0;
- se_fallback.s_proto = NULL;
- se = &se_fallback;
- } else {
- char *endp = NULL;
- long portnum = strtol(service, &endp, 10);
-
-/*
- * Because struct servent is defined for 32-bit pointers only with
- * VMS C, we need to make sure that 'proto' is a 32-bit pointer.
- */
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma pointer_size save
-# pragma pointer_size 32
-#endif
- char *proto = NULL;
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma pointer_size restore
-#endif
-
- switch (socktype) {
- case SOCK_STREAM:
- proto = "tcp";
- break;
- case SOCK_DGRAM:
- proto = "udp";
- break;
- }
-
- if (endp != service && *endp == '\0'
- && portnum > 0 && portnum < 65536) {
- se_fallback.s_port = htons((unsigned short)portnum);
- se_fallback.s_proto = proto;
- se = &se_fallback;
- } else if (endp == service) {
- se = getservbyname(service, proto);
-
- if (se == NULL) {
-#ifndef OPENSSL_SYS_WINDOWS
- SYSerr(SYS_F_GETSERVBYNAME, errno);
-#else
- SYSerr(SYS_F_GETSERVBYNAME, WSAGetLastError());
-#endif
- goto err;
- }
- } else {
- BIOerr(BIO_F_BIO_LOOKUP_EX, BIO_R_MALFORMED_HOST_OR_SERVICE);
- goto err;
- }
- }
-
- *res = NULL;
-
- {
-/*
- * Because hostent::h_addr_list is an array of 32-bit pointers with VMS C,
- * we must make sure our iterator designates the same element type, hence
- * the pointer size dance.
- */
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma pointer_size save
-# pragma pointer_size 32
-#endif
- char **addrlistp;
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma pointer_size restore
-#endif
- size_t addresses;
- BIO_ADDRINFO *tmp_bai = NULL;
-
- /* The easiest way to create a linked list from an
- array is to start from the back */
- for(addrlistp = he->h_addr_list; *addrlistp != NULL;
- addrlistp++)
- ;
-
- for(addresses = addrlistp - he->h_addr_list;
- addrlistp--, addresses-- > 0; ) {
- if (!addrinfo_wrap(he->h_addrtype, socktype,
- *addrlistp, he->h_length,
- se->s_port, &tmp_bai))
- goto addrinfo_malloc_err;
- tmp_bai->bai_next = *res;
- *res = tmp_bai;
- continue;
- addrinfo_malloc_err:
- BIO_ADDRINFO_free(*res);
- *res = NULL;
- BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_MALLOC_FAILURE);
- ret = 0;
- goto err;
- }
-
- ret = 1;
- }
- err:
- CRYPTO_THREAD_unlock(bio_lookup_lock);
- }
-
- return ret;
-}
-
-#endif /* OPENSSL_NO_SOCK */
projects / openssl.git / blobdiff