openssl: Move to a module and split thirdparty lib

Same rationale as the previous commits.

1 files changed, 962 insertions, 0 deletions

diff --git a/thirdparty/openssl/crypto/bio/b_sock.c b/thirdparty/openssl/crypto/bio/b_sock.c
new file mode 100644
index 0000000000..5bad0a2bad
--- /dev/null
+++ b/thirdparty/openssl/crypto/bio/b_sock.c
@@ -0,0 +1,962 @@
+/* crypto/bio/b_sock.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#define USE_SOCKETS
+#include "cryptlib.h"
+#include <openssl/bio.h>
+#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK)
+# include <netdb.h>
+# if defined(NETWARE_CLIB)
+#  include <sys/ioctl.h>
+NETDB_DEFINE_CONTEXT
+# endif
+#endif
+#ifndef OPENSSL_NO_SOCK
+# include <openssl/dso.h>
+# define SOCKET_PROTOCOL IPPROTO_TCP
+# ifdef SO_MAXCONN
+#  define MAX_LISTEN  SO_MAXCONN
+# elif defined(SOMAXCONN)
+#  define MAX_LISTEN  SOMAXCONN
+# else
+#  define MAX_LISTEN  32
+# endif
+# if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK))
+static int wsa_init_done = 0;
+# endif
+
+/*
+ * WSAAPI specifier is required to make indirect calls to run-time
+ * linked WinSock 2 functions used in this module, to be specific
+ * [get|free]addrinfo and getnameinfo. This is because WinSock uses
+ * uses non-C calling convention, __stdcall vs. __cdecl, on x86
+ * Windows. On non-WinSock platforms WSAAPI needs to be void.
+ */
+# ifndef WSAAPI
+#  define WSAAPI
+# endif
+
+# if 0
+static unsigned long BIO_ghbn_hits = 0L;
+static unsigned long BIO_ghbn_miss = 0L;
+
+#  define GHBN_NUM        4
+static struct ghbn_cache_st {
+    char name[129];
+    struct hostent *ent;
+    unsigned long order;
+} ghbn_cache[GHBN_NUM];
+# endif
+
+static int get_ip(const char *str, unsigned char *ip);
+# if 0
+static void ghbn_free(struct hostent *a);
+static struct hostent *ghbn_dup(struct hostent *a);
+# endif
+int BIO_get_host_ip(const char *str, unsigned char *ip)
+{
+    int i;
+    int err = 1;
+    int locked = 0;
+    struct hostent *he;
+
+    i = get_ip(str, ip);
+    if (i < 0) {
+        BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_INVALID_IP_ADDRESS);
+        goto err;
+    }
+
+    /*
+     * At this point, we have something that is most probably correct in some
+     * way, so let's init the socket.
+     */
+    if (BIO_sock_init() != 1)
+        return 0;               /* don't generate another error code here */
+
+    /*
+     * If the string actually contained an IP address, we need not do
+     * anything more
+     */
+    if (i > 0)
+        return (1);
+
+    /* do a gethostbyname */
+    CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
+    locked = 1;
+    he = BIO_gethostbyname(str);
+    if (he == NULL) {
+        BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP);
+        goto err;
+    }
+
+    /* cast to short because of win16 winsock definition */
+    if ((short)he->h_addrtype != AF_INET) {
+        BIOerr(BIO_F_BIO_GET_HOST_IP,
+               BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
+        goto err;
+    }
+    for (i = 0; i < 4; i++)
+        ip[i] = he->h_addr_list[0][i];
+    err = 0;
+
+ err:
+    if (locked)
+        CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
+    if (err) {
+        ERR_add_error_data(2, "host=", str);
+        return 0;
+    } else
+        return 1;
+}
+
+int BIO_get_port(const char *str, unsigned short *port_ptr)
+{
+    int i;
+    struct servent *s;
+
+    if (str == NULL) {
+        BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED);
+        return (0);
+    }
+    i = atoi(str);
+    if (i != 0)
+        *port_ptr = (unsigned short)i;
+    else {
+        CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME);
+        /*
+         * Note: under VMS with SOCKETSHR, it seems like the first parameter
+         * is 'char *', instead of 'const char *'
+         */
+# ifndef CONST_STRICT
+        s = getservbyname((char *)str, "tcp");
+# else
+        s = getservbyname(str, "tcp");
+# endif
+        if (s != NULL)
+            *port_ptr = ntohs((unsigned short)s->s_port);
+        CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME);
+        if (s == NULL) {
+            if (strcmp(str, "http") == 0)
+                *port_ptr = 80;
+            else if (strcmp(str, "telnet") == 0)
+                *port_ptr = 23;
+            else if (strcmp(str, "socks") == 0)
+                *port_ptr = 1080;
+            else if (strcmp(str, "https") == 0)
+                *port_ptr = 443;
+            else if (strcmp(str, "ssl") == 0)
+                *port_ptr = 443;
+            else if (strcmp(str, "ftp") == 0)
+                *port_ptr = 21;
+            else if (strcmp(str, "gopher") == 0)
+                *port_ptr = 70;
+# if 0
+            else if (strcmp(str, "wais") == 0)
+                *port_ptr = 21;
+# endif
+            else {
+                SYSerr(SYS_F_GETSERVBYNAME, get_last_socket_error());
+                ERR_add_error_data(3, "service='", str, "'");
+                return (0);
+            }
+        }
+    }
+    return (1);
+}
+
+int BIO_sock_error(int sock)
+{
+    int j, i;
+    union {
+        size_t s;
+        int i;
+    } size;
+
+# if defined(OPENSSL_SYS_BEOS_R5)
+    return 0;
+# endif
+
+    /* heuristic way to adapt for platforms that expect 64-bit optlen */
+    size.s = 0, size.i = sizeof(j);
+    /*
+     * Note: under Windows the third parameter is of type (char *) whereas
+     * under other systems it is (void *) if you don't have a cast it will
+     * choke the compiler: if you do have a cast then you can either go for
+     * (char *) or (void *).
+     */
+    i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, (void *)&size);
+    if (i < 0)
+        return (1);
+    else
+        return (j);
+}
+
+# if 0
+long BIO_ghbn_ctrl(int cmd, int iarg, char *parg)
+{
+    int i;
+    char **p;
+
+    switch (cmd) {
+    case BIO_GHBN_CTRL_HITS:
+        return (BIO_ghbn_hits);
+        /* break; */
+    case BIO_GHBN_CTRL_MISSES:
+        return (BIO_ghbn_miss);
+        /* break; */
+    case BIO_GHBN_CTRL_CACHE_SIZE:
+        return (GHBN_NUM);
+        /* break; */
+    case BIO_GHBN_CTRL_GET_ENTRY:
+        if ((iarg >= 0) && (iarg < GHBN_NUM) && (ghbn_cache[iarg].order > 0)) {
+            p = (char **)parg;
+            if (p == NULL)
+                return (0);
+            *p = ghbn_cache[iarg].name;
+            ghbn_cache[iarg].name[128] = '\0';
+            return (1);
+        }
+        return (0);
+        /* break; */
+    case BIO_GHBN_CTRL_FLUSH:
+        for (i = 0; i < GHBN_NUM; i++)
+            ghbn_cache[i].order = 0;
+        break;
+    default:
+        return (0);
+    }
+    return (1);
+}
+# endif
+
+# if 0
+static struct hostent *ghbn_dup(struct hostent *a)
+{
+    struct hostent *ret;
+    int i, j;
+
+    MemCheck_off();
+    ret = (struct hostent *)OPENSSL_malloc(sizeof(struct hostent));
+    if (ret == NULL)
+        return (NULL);
+    memset(ret, 0, sizeof(struct hostent));
+
+    for (i = 0; a->h_aliases[i] != NULL; i++) ;
+    i++;
+    ret->h_aliases = (char **)OPENSSL_malloc(i * sizeof(char *));
+    if (ret->h_aliases == NULL)
+        goto err;
+    memset(ret->h_aliases, 0, i * sizeof(char *));
+
+    for (i = 0; a->h_addr_list[i] != NULL; i++) ;
+    i++;
+    ret->h_addr_list = (char **)OPENSSL_malloc(i * sizeof(char *));
+    if (ret->h_addr_list == NULL)
+        goto err;
+    memset(ret->h_addr_list, 0, i * sizeof(char *));
+
+    j = strlen(a->h_name) + 1;
+    if ((ret->h_name = OPENSSL_malloc(j)) == NULL)
+        goto err;
+    memcpy((char *)ret->h_name, a->h_name, j);
+    for (i = 0; a->h_aliases[i] != NULL; i++) {
+        j = strlen(a->h_aliases[i]) + 1;
+        if ((ret->h_aliases[i] = OPENSSL_malloc(j)) == NULL)
+            goto err;
+        memcpy(ret->h_aliases[i], a->h_aliases[i], j);
+    }
+    ret->h_length = a->h_length;
+    ret->h_addrtype = a->h_addrtype;
+    for (i = 0; a->h_addr_list[i] != NULL; i++) {
+        if ((ret->h_addr_list[i] = OPENSSL_malloc(a->h_length)) == NULL)
+            goto err;
+        memcpy(ret->h_addr_list[i], a->h_addr_list[i], a->h_length);
+    }
+    if (0) {
+ err:
+        if (ret != NULL)
+            ghbn_free(ret);
+        ret = NULL;
+    }
+    MemCheck_on();
+    return (ret);
+}
+
+static void ghbn_free(struct hostent *a)
+{
+    int i;
+
+    if (a == NULL)
+        return;
+
+    if (a->h_aliases != NULL) {
+        for (i = 0; a->h_aliases[i] != NULL; i++)
+            OPENSSL_free(a->h_aliases[i]);
+        OPENSSL_free(a->h_aliases);
+    }
+    if (a->h_addr_list != NULL) {
+        for (i = 0; a->h_addr_list[i] != NULL; i++)
+            OPENSSL_free(a->h_addr_list[i]);
+        OPENSSL_free(a->h_addr_list);
+    }
+    if (a->h_name != NULL)
+        OPENSSL_free(a->h_name);
+    OPENSSL_free(a);
+}
+
+# endif
+
+struct hostent *BIO_gethostbyname(const char *name)
+{
+# if 1
+    /*
+     * Caching gethostbyname() results forever is wrong, so we have to let
+     * the true gethostbyname() worry about this
+     */
+#  if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__))
+    return gethostbyname((char *)name);
+#  else
+    return gethostbyname(name);
+#  endif
+# else
+    struct hostent *ret;
+    int i, lowi = 0, j;
+    unsigned long low = (unsigned long)-1;
+
+#  if 0
+    /*
+     * It doesn't make sense to use locking here: The function interface is
+     * not thread-safe, because threads can never be sure when some other
+     * thread destroys the data they were given a pointer to.
+     */
+    CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
+#  endif
+    j = strlen(name);
+    if (j < 128) {
+        for (i = 0; i < GHBN_NUM; i++) {
+            if (low > ghbn_cache[i].order) {
+                low = ghbn_cache[i].order;
+                lowi = i;
+            }
+            if (ghbn_cache[i].order > 0) {
+                if (strncmp(name, ghbn_cache[i].name, 128) == 0)
+                    break;
+            }
+        }
+    } else
+        i = GHBN_NUM;
+
+    if (i == GHBN_NUM) {        /* no hit */
+        BIO_ghbn_miss++;
+        /*
+         * Note: under VMS with SOCKETSHR, it seems like the first parameter
+         * is 'char *', instead of 'const char *'
+         */
+#  ifndef CONST_STRICT
+        ret = gethostbyname((char *)name);
+#  else
+        ret = gethostbyname(name);
+#  endif
+
+        if (ret == NULL)
+            goto end;
+        if (j > 128) {          /* too big to cache */
+#  if 0
+            /*
+             * If we were trying to make this function thread-safe (which is
+             * bound to fail), we'd have to give up in this case (or allocate
+             * more memory).
+             */
+            ret = NULL;
+#  endif
+            goto end;
+        }
+
+        /* else add to cache */
+        if (ghbn_cache[lowi].ent != NULL)
+            ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */
+        ghbn_cache[lowi].name[0] = '\0';
+
+        if ((ret = ghbn_cache[lowi].ent = ghbn_dup(ret)) == NULL) {
+            BIOerr(BIO_F_BIO_GETHOSTBYNAME, ERR_R_MALLOC_FAILURE);
+            goto end;
+        }
+        strncpy(ghbn_cache[lowi].name, name, 128);
+        ghbn_cache[lowi].order = BIO_ghbn_miss + BIO_ghbn_hits;
+    } else {
+        BIO_ghbn_hits++;
+        ret = ghbn_cache[i].ent;
+        ghbn_cache[i].order = BIO_ghbn_miss + BIO_ghbn_hits;
+    }
+ end:
+#  if 0
+    CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
+#  endif
+    return (ret);
+# endif
+}
+
+int BIO_sock_init(void)
+{
+# ifdef OPENSSL_SYS_WINDOWS
+    static struct WSAData wsa_state;
+
+    if (!wsa_init_done) {
+        int err;
+
+        wsa_init_done = 1;
+        memset(&wsa_state, 0, sizeof(wsa_state));
+        /*
+         * Not making wsa_state available to the rest of the code is formally
+         * wrong. But the structures we use are [beleived to be] invariable
+         * among Winsock DLLs, while API availability is [expected to be]
+         * probed at run-time with DSO_global_lookup.
+         */
+        if (WSAStartup(0x0202, &wsa_state) != 0) {
+            err = WSAGetLastError();
+            SYSerr(SYS_F_WSASTARTUP, err);
+            BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
+            return (-1);
+        }
+    }
+# endif                         /* OPENSSL_SYS_WINDOWS */
+# ifdef WATT32
+    extern int _watt_do_exit;
+    _watt_do_exit = 0;          /* don't make sock_init() call exit() */
+    if (sock_init())
+        return (-1);
+# endif
+
+# if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
+    WORD wVerReq;
+    WSADATA wsaData;
+    int err;
+
+    if (!wsa_init_done) {
+        wsa_init_done = 1;
+        wVerReq = MAKEWORD(2, 0);
+        err = WSAStartup(wVerReq, &wsaData);
+        if (err != 0) {
+            SYSerr(SYS_F_WSASTARTUP, err);
+            BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
+            return (-1);
+        }
+    }
+# endif
+
+    return (1);
+}
+
+void BIO_sock_cleanup(void)
+{
+# ifdef OPENSSL_SYS_WINDOWS
+    if (wsa_init_done) {
+        wsa_init_done = 0;
+#  if 0                         /* this call is claimed to be non-present in
+                                 * Winsock2 */
+        WSACancelBlockingCall();
+#  endif
+        WSACleanup();
+    }
+# elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
+    if (wsa_init_done) {
+        wsa_init_done = 0;
+        WSACleanup();
+    }
+# endif
+}
+
+# if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000
+
+int BIO_socket_ioctl(int fd, long type, void *arg)
+{
+    int i;
+
+#  ifdef __DJGPP__
+    i = ioctlsocket(fd, type, (char *)arg);
+#  else
+#   if defined(OPENSSL_SYS_VMS)
+    /*-
+     * 2011-02-18 SMS.
+     * VMS ioctl() can't tolerate a 64-bit "void *arg", but we
+     * observe that all the consumers pass in an "unsigned long *",
+     * so we arrange a local copy with a short pointer, and use
+     * that, instead.
+     */
+#    if __INITIAL_POINTER_SIZE == 64
+#     define ARG arg_32p
+#     pragma pointer_size save
+#     pragma pointer_size 32
+    unsigned long arg_32;
+    unsigned long *arg_32p;
+#     pragma pointer_size restore
+    arg_32p = &arg_32;
+    arg_32 = *((unsigned long *)arg);
+#    else                       /* __INITIAL_POINTER_SIZE == 64 */
+#     define ARG arg
+#    endif                      /* __INITIAL_POINTER_SIZE == 64 [else] */
+#   else                        /* defined(OPENSSL_SYS_VMS) */
+#    define ARG arg
+#   endif                       /* defined(OPENSSL_SYS_VMS) [else] */
+
+    i = ioctlsocket(fd, type, ARG);
+#  endif                        /* __DJGPP__ */
+    if (i < 0)
+        SYSerr(SYS_F_IOCTLSOCKET, get_last_socket_error());
+    return (i);
+}
+# endif                         /* __VMS_VER */
+
+/*
+ * The reason I have implemented this instead of using sscanf is because
+ * Visual C 1.52c gives an unresolved external when linking a DLL :-(
+ */
+static int get_ip(const char *str, unsigned char ip[4])
+{
+    unsigned int tmp[4];
+    int num = 0, c, ok = 0;
+
+    tmp[0] = tmp[1] = tmp[2] = tmp[3] = 0;
+
+    for (;;) {
+        c = *(str++);
+        if ((c >= '0') && (c <= '9')) {
+            ok = 1;
+            tmp[num] = tmp[num] * 10 + c - '0';
+            if (tmp[num] > 255)
+                return (0);
+        } else if (c == '.') {
+            if (!ok)
+                return (-1);
+            if (num == 3)
+                return (0);
+            num++;
+            ok = 0;
+        } else if (c == '\0' && (num == 3) && ok)
+            break;
+        else
+            return (0);
+    }
+    ip[0] = tmp[0];
+    ip[1] = tmp[1];
+    ip[2] = tmp[2];
+    ip[3] = tmp[3];
+    return (1);
+}
+
+int BIO_get_accept_socket(char *host, int bind_mode)
+{
+    int ret = 0;
+    union {
+        struct sockaddr sa;
+        struct sockaddr_in sa_in;
+# if OPENSSL_USE_IPV6
+        struct sockaddr_in6 sa_in6;
+# endif
+    } server, client;
+    int s = INVALID_SOCKET, cs, addrlen;
+    unsigned char ip[4];
+    unsigned short port;
+    char *str = NULL, *e;
+    char *h, *p;
+    unsigned long l;
+    int err_num;
+
+    if (BIO_sock_init() != 1)
+        return (INVALID_SOCKET);
+
+    if ((str = BUF_strdup(host)) == NULL)
+        return (INVALID_SOCKET);
+
+    h = p = NULL;
+    h = str;
+    for (e = str; *e; e++) {
+        if (*e == ':') {
+            p = e;
+        } else if (*e == '/') {
+            *e = '\0';
+            break;
+        }
+    }
+    if (p)
+        *p++ = '\0';            /* points at last ':', '::port' is special
+                                 * [see below] */
+    else
+        p = h, h = NULL;
+
+# ifdef EAI_FAMILY
+    do {
+        static union {
+            void *p;
+            int (WSAAPI *f) (const char *, const char *,
+                             const struct addrinfo *, struct addrinfo **);
+        } p_getaddrinfo = {
+            NULL
+        };
+        static union {
+            void *p;
+            void (WSAAPI *f) (struct addrinfo *);
+        } p_freeaddrinfo = {
+            NULL
+        };
+        struct addrinfo *res, hint;
+
+        if (p_getaddrinfo.p == NULL) {
+            if ((p_getaddrinfo.p = DSO_global_lookup("getaddrinfo")) == NULL
+                || (p_freeaddrinfo.p =
+                    DSO_global_lookup("freeaddrinfo")) == NULL)
+                p_getaddrinfo.p = (void *)-1;
+        }
+        if (p_getaddrinfo.p == (void *)-1)
+            break;
+
+        /*
+         * '::port' enforces IPv6 wildcard listener. Some OSes, e.g. Solaris,
+         * default to IPv6 without any hint. Also note that commonly IPv6
+         * wildchard socket can service IPv4 connections just as well...
+         */
+        memset(&hint, 0, sizeof(hint));
+        hint.ai_flags = AI_PASSIVE;
+        if (h) {
+            if (strchr(h, ':')) {
+                if (h[1] == '\0')
+                    h = NULL;
+#  if OPENSSL_USE_IPV6
+                hint.ai_family = AF_INET6;
+#  else
+                h = NULL;
+#  endif
+            } else if (h[0] == '*' && h[1] == '\0') {
+                hint.ai_family = AF_INET;
+                h = NULL;
+            }
+        }
+
+        if ((*p_getaddrinfo.f) (h, p, &hint, &res))
+            break;
+
+        addrlen = res->ai_addrlen <= sizeof(server) ?
+            res->ai_addrlen : sizeof(server);
+        memcpy(&server, res->ai_addr, addrlen);
+
+        (*p_freeaddrinfo.f) (res);
+        goto again;
+    } while (0);
+# endif
+
+    if (!BIO_get_port(p, &port))
+        goto err;
+
+    memset((char *)&server, 0, sizeof(server));
+    server.sa_in.sin_family = AF_INET;
+    server.sa_in.sin_port = htons(port);
+    addrlen = sizeof(server.sa_in);
+
+    if (h == NULL || strcmp(h, "*") == 0)
+        server.sa_in.sin_addr.s_addr = INADDR_ANY;
+    else {
+        if (!BIO_get_host_ip(h, &(ip[0])))
+            goto err;
+        l = (unsigned long)
+            ((unsigned long)ip[0] << 24L) |
+            ((unsigned long)ip[1] << 16L) |
+            ((unsigned long)ip[2] << 8L) | ((unsigned long)ip[3]);
+        server.sa_in.sin_addr.s_addr = htonl(l);
+    }
+
+ again:
+    s = socket(server.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL);
+    if (s == INVALID_SOCKET) {
+        SYSerr(SYS_F_SOCKET, get_last_socket_error());
+        ERR_add_error_data(3, "port='", host, "'");
+        BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_CREATE_SOCKET);
+        goto err;
+    }
+# ifdef SO_REUSEADDR
+    if (bind_mode == BIO_BIND_REUSEADDR) {
+        int i = 1;
+
+        ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&i, sizeof(i));
+        bind_mode = BIO_BIND_NORMAL;
+    }
+# endif
+    if (bind(s, &server.sa, addrlen) == -1) {
+# ifdef SO_REUSEADDR
+        err_num = get_last_socket_error();
+        if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
+#  ifdef OPENSSL_SYS_WINDOWS
+            /*
+             * Some versions of Windows define EADDRINUSE to a dummy value.
+             */
+            (err_num == WSAEADDRINUSE))
+#  else
+            (err_num == EADDRINUSE))
+#  endif
+        {
+            client = server;
+            if (h == NULL || strcmp(h, "*") == 0) {
+#  if OPENSSL_USE_IPV6
+                if (client.sa.sa_family == AF_INET6) {
+                    memset(&client.sa_in6.sin6_addr, 0,
+                           sizeof(client.sa_in6.sin6_addr));
+                    client.sa_in6.sin6_addr.s6_addr[15] = 1;
+                } else
+#  endif
+                if (client.sa.sa_family == AF_INET) {
+                    client.sa_in.sin_addr.s_addr = htonl(0x7F000001);
+                } else
+                    goto err;
+            }
+            cs = socket(client.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL);
+            if (cs != INVALID_SOCKET) {
+                int ii;
+                ii = connect(cs, &client.sa, addrlen);
+                closesocket(cs);
+                if (ii == INVALID_SOCKET) {
+                    bind_mode = BIO_BIND_REUSEADDR;
+                    closesocket(s);
+                    goto again;
+                }
+                /* else error */
+            }
+            /* else error */
+        }
+# endif
+        SYSerr(SYS_F_BIND, err_num);
+        ERR_add_error_data(3, "port='", host, "'");
+        BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_BIND_SOCKET);
+        goto err;
+    }
+    if (listen(s, MAX_LISTEN) == -1) {
+        SYSerr(SYS_F_BIND, get_last_socket_error());
+        ERR_add_error_data(3, "port='", host, "'");
+        BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_LISTEN_SOCKET);
+        goto err;
+    }
+    ret = 1;
+ err:
+    if (str != NULL)
+        OPENSSL_free(str);
+    if ((ret == 0) && (s != INVALID_SOCKET)) {
+        closesocket(s);
+        s = INVALID_SOCKET;
+    }
+    return (s);
+}
+
+int BIO_accept(int sock, char **addr)
+{
+    int ret = INVALID_SOCKET;
+    unsigned long l;
+    unsigned short port;
+    char *p;
+
+    struct {
+        /*
+         * As for following union. Trouble is that there are platforms
+         * that have socklen_t and there are platforms that don't, on
+         * some platforms socklen_t is int and on some size_t. So what
+         * one can do? One can cook #ifdef spaghetti, which is nothing
+         * but masochistic. Or one can do union between int and size_t.
+         * One naturally does it primarily for 64-bit platforms where
+         * sizeof(int) != sizeof(size_t). But would it work? Note that
+         * if size_t member is initialized to 0, then later int member
+         * assignment naturally does the job on little-endian platforms
+         * regardless accept's expectations! What about big-endians?
+         * If accept expects int*, then it works, and if size_t*, then
+         * length value would appear as unreasonably large. But this
+         * won't prevent it from filling in the address structure. The
+         * trouble of course would be if accept returns more data than
+         * actual buffer can accomodate and overwrite stack... That's
+         * where early OPENSSL_assert comes into picture. Besides, the
+         * only 64-bit big-endian platform found so far that expects
+         * size_t* is HP-UX, where stack grows towards higher address.
+         * <appro>
+         */
+        union {
+            size_t s;
+            int i;
+        } len;
+        union {
+            struct sockaddr sa;
+            struct sockaddr_in sa_in;
+# if OPENSSL_USE_IPV6
+            struct sockaddr_in6 sa_in6;
+# endif
+        } from;
+    } sa;
+
+    sa.len.s = 0;
+    sa.len.i = sizeof(sa.from);
+    memset(&sa.from, 0, sizeof(sa.from));
+    ret = accept(sock, &sa.from.sa, (void *)&sa.len);
+    if (sizeof(sa.len.i) != sizeof(sa.len.s) && sa.len.i == 0) {
+        OPENSSL_assert(sa.len.s <= sizeof(sa.from));
+        sa.len.i = (int)sa.len.s;
+        /* use sa.len.i from this point */
+    }
+    if (ret == INVALID_SOCKET) {
+        if (BIO_sock_should_retry(ret))
+            return -2;
+        SYSerr(SYS_F_ACCEPT, get_last_socket_error());
+        BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
+        goto end;
+    }
+
+    if (addr == NULL)
+        goto end;
+
+# ifdef EAI_FAMILY
+    do {
+        char h[NI_MAXHOST], s[NI_MAXSERV];
+        size_t nl;
+        static union {
+            void *p;
+            int (WSAAPI *f) (const struct sockaddr *, size_t /* socklen_t */ ,
+                             char *, size_t, char *, size_t, int);
+        } p_getnameinfo = {
+            NULL
+        };
+        /*
+         * 2nd argument to getnameinfo is specified to be socklen_t.
+         * Unfortunately there is a number of environments where socklen_t is
+         * not defined. As it's passed by value, it's safe to pass it as
+         * size_t... <appro>
+         */
+
+        if (p_getnameinfo.p == NULL) {
+            if ((p_getnameinfo.p = DSO_global_lookup("getnameinfo")) == NULL)
+                p_getnameinfo.p = (void *)-1;
+        }
+        if (p_getnameinfo.p == (void *)-1)
+            break;
+
+        if ((*p_getnameinfo.f) (&sa.from.sa, sa.len.i, h, sizeof(h), s,
+                                sizeof(s), NI_NUMERICHOST | NI_NUMERICSERV))
+            break;
+        nl = strlen(h) + strlen(s) + 2;
+        p = *addr;
+        if (p) {
+            *p = '\0';
+            p = OPENSSL_realloc(p, nl);
+        } else {
+            p = OPENSSL_malloc(nl);
+        }
+        if (p == NULL) {
+            BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
+            goto end;
+        }
+        *addr = p;
+        BIO_snprintf(*addr, nl, "%s:%s", h, s);
+        goto end;
+    } while (0);
+# endif
+    if (sa.from.sa.sa_family != AF_INET)
+        goto end;
+    l = ntohl(sa.from.sa_in.sin_addr.s_addr);
+    port = ntohs(sa.from.sa_in.sin_port);
+    if (*addr == NULL) {
+        if ((p = OPENSSL_malloc(24)) == NULL) {
+            BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
+            goto end;
+        }
+        *addr = p;
+    }
+    BIO_snprintf(*addr, 24, "%d.%d.%d.%d:%d",
+                 (unsigned char)(l >> 24L) & 0xff,
+                 (unsigned char)(l >> 16L) & 0xff,
+                 (unsigned char)(l >> 8L) & 0xff,
+                 (unsigned char)(l) & 0xff, port);
+ end:
+    return (ret);
+}
+
+int BIO_set_tcp_ndelay(int s, int on)
+{
+    int ret = 0;
+# if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
+    int opt;
+
+#  ifdef SOL_TCP
+    opt = SOL_TCP;
+#  else
+#   ifdef IPPROTO_TCP
+    opt = IPPROTO_TCP;
+#   endif
+#  endif
+
+    ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
+# endif
+    return (ret == 0);
+}
+
+int BIO_socket_nbio(int s, int mode)
+{
+    int ret = -1;
+    int l;
+
+    l = mode;
+# ifdef FIONBIO
+    ret = BIO_socket_ioctl(s, FIONBIO, &l);
+# endif
+    return (ret == 0);
+}
+#endif