[thirdparty/openssl.git] / crypto / bio / bss_conn.c

/*
 * Copyright 1995-2018 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 <stdio.h>
#include <errno.h>

#include "bio_lcl.h"

#ifndef OPENSSL_NO_SOCK

typedef struct bio_connect_st {
    int state;
    int connect_family;
    char *param_hostname;
    char *param_service;
    int connect_mode;

    BIO_ADDRINFO *addr_first;
    const BIO_ADDRINFO *addr_iter;
    /*
     * int socket; this will be kept in bio->num so that it is compatible
     * with the bss_sock bio
     */
    /*
     * called when the connection is initially made callback(BIO,state,ret);
     * The callback should return 'ret'.  state is for compatibility with the
     * ssl info_callback
     */
    BIO_info_cb *info_callback;
} BIO_CONNECT;

static int conn_write(BIO *h, const char *buf, int num);
static int conn_read(BIO *h, char *buf, int size);
static int conn_puts(BIO *h, const char *str);
static long conn_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int conn_new(BIO *h);
static int conn_free(BIO *data);
static long conn_callback_ctrl(BIO *h, int cmd, BIO_info_cb *);

static int conn_state(BIO *b, BIO_CONNECT *c);
static void conn_close_socket(BIO *data);
BIO_CONNECT *BIO_CONNECT_new(void);
void BIO_CONNECT_free(BIO_CONNECT *a);

#define BIO_CONN_S_BEFORE                1
#define BIO_CONN_S_GET_ADDR              2
#define BIO_CONN_S_CREATE_SOCKET         3
#define BIO_CONN_S_CONNECT               4
#define BIO_CONN_S_OK                    5
#define BIO_CONN_S_BLOCKED_CONNECT       6

static const BIO_METHOD methods_connectp = {
    BIO_TYPE_CONNECT,
    "socket connect",
    /* TODO: Convert to new style write function */
    bwrite_conv,
    conn_write,
    /* TODO: Convert to new style read function */
    bread_conv,
    conn_read,
    conn_puts,
    NULL,                       /* conn_gets, */
    conn_ctrl,
    conn_new,
    conn_free,
    conn_callback_ctrl,
};

static int conn_state(BIO *b, BIO_CONNECT *c)
{
    int ret = -1, i;
    BIO_info_cb *cb = NULL;

    if (c->info_callback != NULL)
        cb = c->info_callback;

    for (;;) {
        switch (c->state) {
        case BIO_CONN_S_BEFORE:
            if (c->param_hostname == NULL && c->param_service == NULL) {
                BIOerr(BIO_F_CONN_STATE, BIO_R_NO_HOSTNAME_OR_SERVICE_SPECIFIED);
                ERR_add_error_data(4,
                                   "hostname=", c->param_hostname,
                                   " service=", c->param_service);
                goto exit_loop;
            }
            c->state = BIO_CONN_S_GET_ADDR;
            break;

        case BIO_CONN_S_GET_ADDR:
            {
                int family = AF_UNSPEC;
                switch (c->connect_family) {
                case BIO_FAMILY_IPV6:
                    if (1) { /* This is a trick we use to avoid bit rot.
                              * at least the "else" part will always be
                              * compiled.
                              */
#ifdef AF_INET6
                        family = AF_INET6;
                    } else {
#endif
                        BIOerr(BIO_F_CONN_STATE, BIO_R_UNAVAILABLE_IP_FAMILY);
                        goto exit_loop;
                    }
                    break;
                case BIO_FAMILY_IPV4:
                    family = AF_INET;
                    break;
                case BIO_FAMILY_IPANY:
                    family = AF_UNSPEC;
                    break;
                default:
                    BIOerr(BIO_F_CONN_STATE, BIO_R_UNSUPPORTED_IP_FAMILY);
                    goto exit_loop;
                }
                if (BIO_lookup(c->param_hostname, c->param_service,
                               BIO_LOOKUP_CLIENT,
                               family, SOCK_STREAM, &c->addr_first) == 0)
                    goto exit_loop;
            }
            if (c->addr_first == NULL) {
                BIOerr(BIO_F_CONN_STATE, BIO_R_LOOKUP_RETURNED_NOTHING);
                goto exit_loop;
            }
            c->addr_iter = c->addr_first;
            c->state = BIO_CONN_S_CREATE_SOCKET;
            break;

        case BIO_CONN_S_CREATE_SOCKET:
            ret = BIO_socket(BIO_ADDRINFO_family(c->addr_iter),
                             BIO_ADDRINFO_socktype(c->addr_iter),
                             BIO_ADDRINFO_protocol(c->addr_iter), 0);
            if (ret == (int)INVALID_SOCKET) {
                SYSerr("socket", get_last_socket_error());
                ERR_add_error_data(4,
                                   "hostname=", c->param_hostname,
                                   " service=", c->param_service);
                BIOerr(BIO_F_CONN_STATE, BIO_R_UNABLE_TO_CREATE_SOCKET);
                goto exit_loop;
            }
            b->num = ret;
            c->state = BIO_CONN_S_CONNECT;
            break;

        case BIO_CONN_S_CONNECT:
            BIO_clear_retry_flags(b);
            ret = BIO_connect(b->num, BIO_ADDRINFO_address(c->addr_iter),
                              BIO_SOCK_KEEPALIVE | c->connect_mode);
            b->retry_reason = 0;
            if (ret == 0) {
                if (BIO_sock_should_retry(ret)) {
                    BIO_set_retry_special(b);
                    c->state = BIO_CONN_S_BLOCKED_CONNECT;
                    b->retry_reason = BIO_RR_CONNECT;
                    ERR_clear_error();
                } else if ((c->addr_iter = BIO_ADDRINFO_next(c->addr_iter))
                           != NULL) {
                    /*
                     * if there are more addresses to try, do that first
                     */
                    BIO_closesocket(b->num);
                    c->state = BIO_CONN_S_CREATE_SOCKET;
                    ERR_clear_error();
                    break;
                } else {
                    SYSerr("connect", get_last_socket_error());
                    ERR_add_error_data(4,
                                       "hostname=", c->param_hostname,
                                       " service=", c->param_service);
                    BIOerr(BIO_F_CONN_STATE, BIO_R_CONNECT_ERROR);
                }
                goto exit_loop;
            } else {
                c->state = BIO_CONN_S_OK;
            }
            break;

        case BIO_CONN_S_BLOCKED_CONNECT:
            i = BIO_sock_error(b->num);
            if (i) {
                BIO_clear_retry_flags(b);
                SYSerr("connect", i);
                ERR_add_error_data(4,
                                   "hostname=", c->param_hostname,
                                   " service=", c->param_service);
                BIOerr(BIO_F_CONN_STATE, BIO_R_NBIO_CONNECT_ERROR);
                ret = 0;
                goto exit_loop;
            } else
                c->state = BIO_CONN_S_OK;
            break;

        case BIO_CONN_S_OK:
            ret = 1;
            goto exit_loop;
        default:
            /* abort(); */
            goto exit_loop;
        }

        if (cb != NULL) {
            if ((ret = cb((BIO *)b, c->state, ret)) == 0)
                goto end;
        }
    }

    /* Loop does not exit */
 exit_loop:
    if (cb != NULL)
        ret = cb((BIO *)b, c->state, ret);
 end:
    return ret;
}

BIO_CONNECT *BIO_CONNECT_new(void)
{
    BIO_CONNECT *ret;

    if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
        BIOerr(BIO_F_BIO_CONNECT_NEW, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    ret->state = BIO_CONN_S_BEFORE;
    ret->connect_family = BIO_FAMILY_IPANY;
    return ret;
}

void BIO_CONNECT_free(BIO_CONNECT *a)
{
    if (a == NULL)
        return;
    OPENSSL_free(a->param_hostname);
    OPENSSL_free(a->param_service);
    BIO_ADDRINFO_free(a->addr_first);
    OPENSSL_free(a);
}

const BIO_METHOD *BIO_s_connect(void)
{
    return &methods_connectp;
}

static int conn_new(BIO *bi)
{
    bi->init = 0;
    bi->num = (int)INVALID_SOCKET;
    bi->flags = 0;
    if ((bi->ptr = (char *)BIO_CONNECT_new()) == NULL)
        return 0;
    else
        return 1;
}

static void conn_close_socket(BIO *bio)
{
    BIO_CONNECT *c;

    c = (BIO_CONNECT *)bio->ptr;
    if (bio->num != (int)INVALID_SOCKET) {
        /* Only do a shutdown if things were established */
        if (c->state == BIO_CONN_S_OK)
            shutdown(bio->num, 2);
        BIO_closesocket(bio->num);
        bio->num = (int)INVALID_SOCKET;
    }
}

static int conn_free(BIO *a)
{
    BIO_CONNECT *data;

    if (a == NULL)
        return 0;
    data = (BIO_CONNECT *)a->ptr;

    if (a->shutdown) {
        conn_close_socket(a);
        BIO_CONNECT_free(data);
        a->ptr = NULL;
        a->flags = 0;
        a->init = 0;
    }
    return 1;
}

static int conn_read(BIO *b, char *out, int outl)
{
    int ret = 0;
    BIO_CONNECT *data;

    data = (BIO_CONNECT *)b->ptr;
    if (data->state != BIO_CONN_S_OK) {
        ret = conn_state(b, data);
        if (ret <= 0)
            return ret;
    }

    if (out != NULL) {
        clear_socket_error();
        ret = readsocket(b->num, out, outl);
        BIO_clear_retry_flags(b);
        if (ret <= 0) {
            if (BIO_sock_should_retry(ret))
                BIO_set_retry_read(b);
        }
    }
    return ret;
}

static int conn_write(BIO *b, const char *in, int inl)
{
    int ret;
    BIO_CONNECT *data;

    data = (BIO_CONNECT *)b->ptr;
    if (data->state != BIO_CONN_S_OK) {
        ret = conn_state(b, data);
        if (ret <= 0)
            return ret;
    }

    clear_socket_error();
    ret = writesocket(b->num, in, inl);
    BIO_clear_retry_flags(b);
    if (ret <= 0) {
        if (BIO_sock_should_retry(ret))
            BIO_set_retry_write(b);
    }
    return ret;
}

static long conn_ctrl(BIO *b, int cmd, long num, void *ptr)
{
    BIO *dbio;
    int *ip;
    const char **pptr = NULL;
    long ret = 1;
    BIO_CONNECT *data;

    data = (BIO_CONNECT *)b->ptr;

    switch (cmd) {
    case BIO_CTRL_RESET:
        ret = 0;
        data->state = BIO_CONN_S_BEFORE;
        conn_close_socket(b);
        BIO_ADDRINFO_free(data->addr_first);
        data->addr_first = NULL;
        b->flags = 0;
        break;
    case BIO_C_DO_STATE_MACHINE:
        /* use this one to start the connection */
        if (data->state != BIO_CONN_S_OK)
            ret = (long)conn_state(b, data);
        else
            ret = 1;
        break;
    case BIO_C_GET_CONNECT:
        if (ptr != NULL) {
            pptr = (const char **)ptr;
            if (num == 0) {
                *pptr = data->param_hostname;
            } else if (num == 1) {
                *pptr = data->param_service;
            } else if (num == 2) {
                *pptr = (const char *)BIO_ADDRINFO_address(data->addr_iter);
            } else if (num == 3) {
                switch (BIO_ADDRINFO_family(data->addr_iter)) {
# ifdef AF_INET6
                case AF_INET6:
                    ret = BIO_FAMILY_IPV6;
                    break;
# endif
                case AF_INET:
                    ret = BIO_FAMILY_IPV4;
                    break;
                case 0:
                    ret = data->connect_family;
                    break;
                default:
                    ret = -1;
                    break;
                }
            } else {
                ret = 0;
            }
        } else {
            ret = 0;
        }
        break;
    case BIO_C_SET_CONNECT:
        if (ptr != NULL) {
            b->init = 1;
            if (num == 0) {
                char *hold_service = data->param_service;
                /* We affect the hostname regardless.  However, the input
                 * string might contain a host:service spec, so we must
                 * parse it, which might or might not affect the service
                 */
                OPENSSL_free(data->param_hostname);
                data->param_hostname = NULL;
                ret = BIO_parse_hostserv(ptr,
                                         &data->param_hostname,
                                         &data->param_service,
                                         BIO_PARSE_PRIO_HOST);
                if (hold_service != data->param_service)
                    OPENSSL_free(hold_service);
            } else if (num == 1) {
                OPENSSL_free(data->param_service);
                data->param_service = BUF_strdup(ptr);
            } else if (num == 2) {
                const BIO_ADDR *addr = (const BIO_ADDR *)ptr;
                if (ret) {
                    data->param_hostname = BIO_ADDR_hostname_string(addr, 1);
                    data->param_service = BIO_ADDR_service_string(addr, 1);
                    BIO_ADDRINFO_free(data->addr_first);
                    data->addr_first = NULL;
                    data->addr_iter = NULL;
                }
            } else if (num == 3) {
                data->connect_family = *(int *)ptr;
            } else {
                ret = 0;
            }
        }
        break;
    case BIO_C_SET_NBIO:
        if (num != 0)
            data->connect_mode |= BIO_SOCK_NONBLOCK;
        else
            data->connect_mode &= ~BIO_SOCK_NONBLOCK;
        break;
    case BIO_C_SET_CONNECT_MODE:
        data->connect_mode = (int)num;
        break;
    case BIO_C_GET_FD:
        if (b->init) {
            ip = (int *)ptr;
            if (ip != NULL)
                *ip = b->num;
            ret = b->num;
        } else
            ret = -1;
        break;
    case BIO_CTRL_GET_CLOSE:
        ret = b->shutdown;
        break;
    case BIO_CTRL_SET_CLOSE:
        b->shutdown = (int)num;
        break;
    case BIO_CTRL_PENDING:
    case BIO_CTRL_WPENDING:
        ret = 0;
        break;
    case BIO_CTRL_FLUSH:
        break;
    case BIO_CTRL_DUP:
        {
            dbio = (BIO *)ptr;
            if (data->param_hostname)
                BIO_set_conn_hostname(dbio, data->param_hostname);
            if (data->param_service)
                BIO_set_conn_port(dbio, data->param_service);
            BIO_set_conn_ip_family(dbio, data->connect_family);
            BIO_set_conn_mode(dbio, data->connect_mode);
            /*
             * FIXME: the cast of the function seems unlikely to be a good
             * idea
             */
            (void)BIO_set_info_callback(dbio, data->info_callback);
        }
        break;
    case BIO_CTRL_SET_CALLBACK:
        ret = 0; /* use callback ctrl */
        break;
    case BIO_CTRL_GET_CALLBACK:
        {
            BIO_info_cb **fptr;

            fptr = (BIO_info_cb **)ptr;
            *fptr = data->info_callback;
        }
        break;
    default:
        ret = 0;
        break;
    }
    return ret;
}

static long conn_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
{
    long ret = 1;
    BIO_CONNECT *data;

    data = (BIO_CONNECT *)b->ptr;

    switch (cmd) {
    case BIO_CTRL_SET_CALLBACK:
        {
            data->info_callback = fp;
        }
        break;
    default:
        ret = 0;
        break;
    }
    return ret;
}

static int conn_puts(BIO *bp, const char *str)
{
    int n, ret;

    n = strlen(str);
    ret = conn_write(bp, str, n);
    return ret;
}

BIO *BIO_new_connect(const char *str)
{
    BIO *ret;

    ret = BIO_new(BIO_s_connect());
    if (ret == NULL)
        return NULL;
    if (BIO_set_conn_hostname(ret, str))
        return ret;
    BIO_free(ret);
    return NULL;
}

#endif
Commit	Line	Data
b1322259	1	/*
c4d3c19b	2	* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
09abbca1	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
b1322259 RS	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
d02b48c6 RE	8	*/
d02b48c6 RE	9
d02b48c6 RE	10	#include <stdio.h>
d02b48c6 RE	11	#include <errno.h>
d02b48c6	12
417be660	13	#include "bio_lcl.h"
b00b2124	14
417be660	15	#ifndef OPENSSL_NO_SOCK
0f113f3e MC	16
	17	typedef struct bio_connect_st {
	18	int state;
417be660	19	int connect_family;
0f113f3e	20	char *param_hostname;
417be660 RL	21	char *param_service;
	22	int connect_mode;
	23
	24	BIO_ADDRINFO *addr_first;
	25	const BIO_ADDRINFO *addr_iter;
0f113f3e MC	26	/*
	27	* int socket; this will be kept in bio->num so that it is compatible
	28	* with the bss_sock bio
	29	*/
	30	/*
	31	* called when the connection is initially made callback(BIO,state,ret);
	32	* The callback should return 'ret'. state is for compatibility with the
	33	* ssl info_callback
	34	*/
fce78bd4	35	BIO_info_cb *info_callback;
0f113f3e	36	} BIO_CONNECT;
d02b48c6	37
0e1c0612 UM	38	static int conn_write(BIO h, const char buf, int num);
	39	static int conn_read(BIO h, char buf, int size);
	40	static int conn_puts(BIO h, const char str);
	41	static long conn_ctrl(BIO h, int cmd, long arg1, void arg2);
d02b48c6 RE	42	static int conn_new(BIO *h);
d02b48c6 RE	43	static int conn_free(BIO *data);
fce78bd4	44	static long conn_callback_ctrl(BIO h, int cmd, BIO_info_cb );
d02b48c6 RE	45
	46	static int conn_state(BIO b, BIO_CONNECT c);
	47	static void conn_close_socket(BIO *data);
0f113f3e	48	BIO_CONNECT *BIO_CONNECT_new(void);
d02b48c6 RE	49	void BIO_CONNECT_free(BIO_CONNECT *a);
d02b48c6 RE	50
417be660 RL	51	#define BIO_CONN_S_BEFORE 1
	52	#define BIO_CONN_S_GET_ADDR 2
	53	#define BIO_CONN_S_CREATE_SOCKET 3
	54	#define BIO_CONN_S_CONNECT 4
	55	#define BIO_CONN_S_OK 5
	56	#define BIO_CONN_S_BLOCKED_CONNECT 6
	57
04f6b0fd	58	static const BIO_METHOD methods_connectp = {
0f113f3e MC	59	BIO_TYPE_CONNECT,
0f113f3e MC	60	"socket connect",
3befffa3 MC	61	/* TODO: Convert to new style write function */
3befffa3 MC	62	bwrite_conv,
0f113f3e	63	conn_write,
d07aee2c MC	64	/* TODO: Convert to new style read function */
d07aee2c MC	65	bread_conv,
0f113f3e MC	66	conn_read,
0f113f3e MC	67	conn_puts,
b4ff6622	68	NULL, /* conn_gets, */
0f113f3e MC	69	conn_ctrl,
	70	conn_new,
	71	conn_free,
	72	conn_callback_ctrl,
	73	};
d02b48c6	74
6b691a5c	75	static int conn_state(BIO b, BIO_CONNECT c)
0f113f3e MC	76	{
0f113f3e MC	77	int ret = -1, i;
fce78bd4	78	BIO_info_cb *cb = NULL;
0f113f3e MC	79
	80	if (c->info_callback != NULL)
	81	cb = c->info_callback;
	82
	83	for (;;) {
	84	switch (c->state) {
	85	case BIO_CONN_S_BEFORE:
417be660 RL	86	if (c->param_hostname == NULL && c->param_service == NULL) {
	87	BIOerr(BIO_F_CONN_STATE, BIO_R_NO_HOSTNAME_OR_SERVICE_SPECIFIED);
	88	ERR_add_error_data(4,
	89	"hostname=", c->param_hostname,
	90	" service=", c->param_service);
0f113f3e MC	91	goto exit_loop;
0f113f3e MC	92	}
417be660 RL	93	c->state = BIO_CONN_S_GET_ADDR;
417be660 RL	94	break;
0f113f3e	95
417be660 RL	96	case BIO_CONN_S_GET_ADDR:
	97	{
	98	int family = AF_UNSPEC;
	99	switch (c->connect_family) {
	100	case BIO_FAMILY_IPV6:
	101	if (1) { /* This is a trick we use to avoid bit rot.
	102	* at least the "else" part will always be
	103	* compiled.
	104	*/
	105	#ifdef AF_INET6
	106	family = AF_INET6;
	107	} else {
	108	#endif
	109	BIOerr(BIO_F_CONN_STATE, BIO_R_UNAVAILABLE_IP_FAMILY);
	110	goto exit_loop;
	111	}
	112	break;
	113	case BIO_FAMILY_IPV4:
	114	family = AF_INET;
	115	break;
	116	case BIO_FAMILY_IPANY:
	117	family = AF_UNSPEC;
	118	break;
	119	default:
	120	BIOerr(BIO_F_CONN_STATE, BIO_R_UNSUPPORTED_IP_FAMILY);
	121	goto exit_loop;
0f113f3e	122	}
417be660 RL	123	if (BIO_lookup(c->param_hostname, c->param_service,
	124	BIO_LOOKUP_CLIENT,
	125	family, SOCK_STREAM, &c->addr_first) == 0)
	126	goto exit_loop;
0f113f3e	127	}
417be660 RL	128	if (c->addr_first == NULL) {
417be660 RL	129	BIOerr(BIO_F_CONN_STATE, BIO_R_LOOKUP_RETURNED_NOTHING);
0f113f3e MC	130	goto exit_loop;
0f113f3e MC	131	}
417be660	132	c->addr_iter = c->addr_first;
0f113f3e MC	133	c->state = BIO_CONN_S_CREATE_SOCKET;
	134	break;
	135
	136	case BIO_CONN_S_CREATE_SOCKET:
417be660 RL	137	ret = BIO_socket(BIO_ADDRINFO_family(c->addr_iter),
	138	BIO_ADDRINFO_socktype(c->addr_iter),
	139	BIO_ADDRINFO_protocol(c->addr_iter), 0);
b13fdc48	140	if (ret == (int)INVALID_SOCKET) {
56c3a135	141	SYSerr("socket", get_last_socket_error());
417be660 RL	142	ERR_add_error_data(4,
	143	"hostname=", c->param_hostname,
	144	" service=", c->param_service);
0f113f3e MC	145	BIOerr(BIO_F_CONN_STATE, BIO_R_UNABLE_TO_CREATE_SOCKET);
	146	goto exit_loop;
	147	}
	148	b->num = ret;
0f113f3e	149	c->state = BIO_CONN_S_CONNECT;
0f113f3e MC	150	break;
	151
	152	case BIO_CONN_S_CONNECT:
	153	BIO_clear_retry_flags(b);
417be660 RL	154	ret = BIO_connect(b->num, BIO_ADDRINFO_address(c->addr_iter),
417be660 RL	155	BIO_SOCK_KEEPALIVE \| c->connect_mode);
0f113f3e	156	b->retry_reason = 0;
a043d0b9	157	if (ret == 0) {
0f113f3e MC	158	if (BIO_sock_should_retry(ret)) {
	159	BIO_set_retry_special(b);
	160	c->state = BIO_CONN_S_BLOCKED_CONNECT;
	161	b->retry_reason = BIO_RR_CONNECT;
417be660 RL	162	ERR_clear_error();
	163	} else if ((c->addr_iter = BIO_ADDRINFO_next(c->addr_iter))
	164	!= NULL) {
	165	/*
	166	* if there are more addresses to try, do that first
	167	*/
	168	BIO_closesocket(b->num);
	169	c->state = BIO_CONN_S_CREATE_SOCKET;
	170	ERR_clear_error();
	171	break;
0f113f3e	172	} else {
56c3a135	173	SYSerr("connect", get_last_socket_error());
417be660 RL	174	ERR_add_error_data(4,
	175	"hostname=", c->param_hostname,
	176	" service=", c->param_service);
0f113f3e MC	177	BIOerr(BIO_F_CONN_STATE, BIO_R_CONNECT_ERROR);
	178	}
	179	goto exit_loop;
417be660	180	} else {
0f113f3e	181	c->state = BIO_CONN_S_OK;
417be660	182	}
0f113f3e MC	183	break;
	184
	185	case BIO_CONN_S_BLOCKED_CONNECT:
	186	i = BIO_sock_error(b->num);
	187	if (i) {
	188	BIO_clear_retry_flags(b);
56c3a135	189	SYSerr("connect", i);
417be660 RL	190	ERR_add_error_data(4,
	191	"hostname=", c->param_hostname,
	192	" service=", c->param_service);
0f113f3e MC	193	BIOerr(BIO_F_CONN_STATE, BIO_R_NBIO_CONNECT_ERROR);
	194	ret = 0;
	195	goto exit_loop;
	196	} else
	197	c->state = BIO_CONN_S_OK;
	198	break;
	199
	200	case BIO_CONN_S_OK:
	201	ret = 1;
	202	goto exit_loop;
	203	default:
	204	/* abort(); */
	205	goto exit_loop;
	206	}
	207
	208	if (cb != NULL) {
75ebbd9a	209	if ((ret = cb((BIO *)b, c->state, ret)) == 0)
0f113f3e MC	210	goto end;
	211	}
	212	}
	213
	214	/* Loop does not exit */
	215	exit_loop:
	216	if (cb != NULL)
	217	ret = cb((BIO *)b, c->state, ret);
	218	end:
26a7d938	219	return ret;
0f113f3e	220	}
d02b48c6	221
6b691a5c	222	BIO_CONNECT *BIO_CONNECT_new(void)
0f113f3e MC	223	{
	224	BIO_CONNECT *ret;
	225
f06080cb F	226	if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
f06080cb F	227	BIOerr(BIO_F_BIO_CONNECT_NEW, ERR_R_MALLOC_FAILURE);
26a7d938	228	return NULL;
f06080cb	229	}
0f113f3e	230	ret->state = BIO_CONN_S_BEFORE;
417be660	231	ret->connect_family = BIO_FAMILY_IPANY;
26a7d938	232	return ret;
0f113f3e	233	}
d02b48c6	234
6b691a5c	235	void BIO_CONNECT_free(BIO_CONNECT *a)
0f113f3e	236	{
e6e9170d RS	237	if (a == NULL)
e6e9170d RS	238	return;
b548a1f1	239	OPENSSL_free(a->param_hostname);
417be660 RL	240	OPENSSL_free(a->param_service);
417be660 RL	241	BIO_ADDRINFO_free(a->addr_first);
0f113f3e MC	242	OPENSSL_free(a);
0f113f3e MC	243	}
d02b48c6	244
04f6b0fd	245	const BIO_METHOD *BIO_s_connect(void)
0f113f3e	246	{
26a7d938	247	return &methods_connectp;
0f113f3e	248	}
d02b48c6	249
6b691a5c	250	static int conn_new(BIO *bi)
0f113f3e MC	251	{
0f113f3e MC	252	bi->init = 0;
b13fdc48	253	bi->num = (int)INVALID_SOCKET;
0f113f3e MC	254	bi->flags = 0;
0f113f3e MC	255	if ((bi->ptr = (char *)BIO_CONNECT_new()) == NULL)
26a7d938	256	return 0;
0f113f3e	257	else
208fb891	258	return 1;
0f113f3e	259	}
d02b48c6	260
6b691a5c	261	static void conn_close_socket(BIO *bio)
0f113f3e MC	262	{
	263	BIO_CONNECT *c;
	264
	265	c = (BIO_CONNECT *)bio->ptr;
b13fdc48	266	if (bio->num != (int)INVALID_SOCKET) {
0f113f3e MC	267	/* Only do a shutdown if things were established */
	268	if (c->state == BIO_CONN_S_OK)
	269	shutdown(bio->num, 2);
417be660	270	BIO_closesocket(bio->num);
b13fdc48	271	bio->num = (int)INVALID_SOCKET;
0f113f3e MC	272	}
0f113f3e MC	273	}
d02b48c6	274
6b691a5c	275	static int conn_free(BIO *a)
0f113f3e MC	276	{
	277	BIO_CONNECT *data;
	278
	279	if (a == NULL)
26a7d938	280	return 0;
0f113f3e MC	281	data = (BIO_CONNECT *)a->ptr;
	282
	283	if (a->shutdown) {
	284	conn_close_socket(a);
	285	BIO_CONNECT_free(data);
	286	a->ptr = NULL;
	287	a->flags = 0;
	288	a->init = 0;
	289	}
208fb891	290	return 1;
0f113f3e MC	291	}
0f113f3e MC	292
6b691a5c	293	static int conn_read(BIO b, char out, int outl)
0f113f3e MC	294	{
	295	int ret = 0;
	296	BIO_CONNECT *data;
	297
	298	data = (BIO_CONNECT *)b->ptr;
	299	if (data->state != BIO_CONN_S_OK) {
	300	ret = conn_state(b, data);
	301	if (ret <= 0)
26a7d938	302	return ret;
0f113f3e MC	303	}
	304
	305	if (out != NULL) {
	306	clear_socket_error();
	307	ret = readsocket(b->num, out, outl);
	308	BIO_clear_retry_flags(b);
	309	if (ret <= 0) {
	310	if (BIO_sock_should_retry(ret))
	311	BIO_set_retry_read(b);
	312	}
	313	}
26a7d938	314	return ret;
0f113f3e	315	}
d02b48c6	316
0e1c0612	317	static int conn_write(BIO b, const char in, int inl)
0f113f3e MC	318	{
	319	int ret;
	320	BIO_CONNECT *data;
	321
	322	data = (BIO_CONNECT *)b->ptr;
	323	if (data->state != BIO_CONN_S_OK) {
	324	ret = conn_state(b, data);
	325	if (ret <= 0)
26a7d938	326	return ret;
0f113f3e MC	327	}
	328
	329	clear_socket_error();
	330	ret = writesocket(b->num, in, inl);
	331	BIO_clear_retry_flags(b);
	332	if (ret <= 0) {
	333	if (BIO_sock_should_retry(ret))
	334	BIO_set_retry_write(b);
	335	}
26a7d938	336	return ret;
0f113f3e	337	}
d02b48c6	338
0e1c0612	339	static long conn_ctrl(BIO b, int cmd, long num, void ptr)
0f113f3e MC	340	{
	341	BIO *dbio;
	342	int *ip;
4b72d5f8	343	const char **pptr = NULL;
0f113f3e MC	344	long ret = 1;
	345	BIO_CONNECT *data;
	346
	347	data = (BIO_CONNECT *)b->ptr;
	348
	349	switch (cmd) {
	350	case BIO_CTRL_RESET:
	351	ret = 0;
	352	data->state = BIO_CONN_S_BEFORE;
	353	conn_close_socket(b);
417be660 RL	354	BIO_ADDRINFO_free(data->addr_first);
417be660 RL	355	data->addr_first = NULL;
0f113f3e MC	356	b->flags = 0;
	357	break;
	358	case BIO_C_DO_STATE_MACHINE:
	359	/* use this one to start the connection */
	360	if (data->state != BIO_CONN_S_OK)
	361	ret = (long)conn_state(b, data);
	362	else
	363	ret = 1;
	364	break;
	365	case BIO_C_GET_CONNECT:
	366	if (ptr != NULL) {
	367	pptr = (const char **)ptr;
417be660 RL	368	if (num == 0) {
	369	*pptr = data->param_hostname;
	370	} else if (num == 1) {
	371	*pptr = data->param_service;
	372	} else if (num == 2) {
	373	pptr = (const char )BIO_ADDRINFO_address(data->addr_iter);
	374	} else if (num == 3) {
	375	switch (BIO_ADDRINFO_family(data->addr_iter)) {
	376	# ifdef AF_INET6
	377	case AF_INET6:
	378	ret = BIO_FAMILY_IPV6;
	379	break;
	380	# endif
	381	case AF_INET:
	382	ret = BIO_FAMILY_IPV4;
	383	break;
	384	case 0:
	385	ret = data->connect_family;
	386	break;
	387	default:
	388	ret = -1;
	389	break;
4b72d5f8	390	}
417be660 RL	391	} else {
417be660 RL	392	ret = 0;
4b72d5f8 RL	393	}
4b72d5f8 RL	394	} else {
4b72d5f8	395	ret = 0;
0f113f3e MC	396	}
	397	break;
	398	case BIO_C_SET_CONNECT:
	399	if (ptr != NULL) {
	400	b->init = 1;
	401	if (num == 0) {
417be660 RL	402	char *hold_service = data->param_service;
	403	/* We affect the hostname regardless. However, the input
	404	* string might contain a host:service spec, so we must
	405	* parse it, which might or might not affect the service
	406	*/
b548a1f1	407	OPENSSL_free(data->param_hostname);
417be660 RL	408	data->param_hostname = NULL;
	409	ret = BIO_parse_hostserv(ptr,
	410	&data->param_hostname,
	411	&data->param_service,
	412	BIO_PARSE_PRIO_HOST);
	413	if (hold_service != data->param_service)
	414	OPENSSL_free(hold_service);
0f113f3e	415	} else if (num == 1) {
417be660 RL	416	OPENSSL_free(data->param_service);
417be660 RL	417	data->param_service = BUF_strdup(ptr);
0f113f3e	418	} else if (num == 2) {
417be660 RL	419	const BIO_ADDR addr = (const BIO_ADDR )ptr;
	420	if (ret) {
	421	data->param_hostname = BIO_ADDR_hostname_string(addr, 1);
	422	data->param_service = BIO_ADDR_service_string(addr, 1);
	423	BIO_ADDRINFO_free(data->addr_first);
	424	data->addr_first = NULL;
	425	data->addr_iter = NULL;
	426	}
0f113f3e	427	} else if (num == 3) {
417be660 RL	428	data->connect_family = (int )ptr;
	429	} else {
	430	ret = 0;
0f113f3e MC	431	}
	432	}
	433	break;
	434	case BIO_C_SET_NBIO:
417be660 RL	435	if (num != 0)
	436	data->connect_mode \|= BIO_SOCK_NONBLOCK;
	437	else
	438	data->connect_mode &= ~BIO_SOCK_NONBLOCK;
	439	break;
	440	case BIO_C_SET_CONNECT_MODE:
	441	data->connect_mode = (int)num;
0f113f3e MC	442	break;
	443	case BIO_C_GET_FD:
	444	if (b->init) {
	445	ip = (int *)ptr;
	446	if (ip != NULL)
	447	*ip = b->num;
	448	ret = b->num;
	449	} else
	450	ret = -1;
	451	break;
	452	case BIO_CTRL_GET_CLOSE:
	453	ret = b->shutdown;
	454	break;
	455	case BIO_CTRL_SET_CLOSE:
	456	b->shutdown = (int)num;
	457	break;
	458	case BIO_CTRL_PENDING:
	459	case BIO_CTRL_WPENDING:
	460	ret = 0;
	461	break;
	462	case BIO_CTRL_FLUSH:
	463	break;
	464	case BIO_CTRL_DUP:
	465	{
	466	dbio = (BIO *)ptr;
0f113f3e MC	467	if (data->param_hostname)
0f113f3e MC	468	BIO_set_conn_hostname(dbio, data->param_hostname);
417be660 RL	469	if (data->param_service)
	470	BIO_set_conn_port(dbio, data->param_service);
	471	BIO_set_conn_ip_family(dbio, data->connect_family);
	472	BIO_set_conn_mode(dbio, data->connect_mode);
0f113f3e MC	473	/*
	474	* FIXME: the cast of the function seems unlikely to be a good
	475	* idea
	476	*/
fce78bd4	477	(void)BIO_set_info_callback(dbio, data->info_callback);
0f113f3e MC	478	}
	479	break;
	480	case BIO_CTRL_SET_CALLBACK:
2722ff50	481	ret = 0; /* use callback ctrl */
0f113f3e MC	482	break;
	483	case BIO_CTRL_GET_CALLBACK:
	484	{
fce78bd4	485	BIO_info_cb **fptr;
0f113f3e	486
fce78bd4	487	fptr = (BIO_info_cb **)ptr;
0f113f3e MC	488	*fptr = data->info_callback;
	489	}
	490	break;
	491	default:
	492	ret = 0;
	493	break;
	494	}
26a7d938	495	return ret;
0f113f3e	496	}
d02b48c6	497
fce78bd4	498	static long conn_callback_ctrl(BIO b, int cmd, BIO_info_cb fp)
0f113f3e MC	499	{
	500	long ret = 1;
	501	BIO_CONNECT *data;
	502
	503	data = (BIO_CONNECT *)b->ptr;
	504
	505	switch (cmd) {
	506	case BIO_CTRL_SET_CALLBACK:
	507	{
fce78bd4	508	data->info_callback = fp;
0f113f3e MC	509	}
	510	break;
	511	default:
	512	ret = 0;
	513	break;
	514	}
26a7d938	515	return ret;
0f113f3e	516	}
d3442bc7	517
0e1c0612	518	static int conn_puts(BIO bp, const char str)
0f113f3e MC	519	{
0f113f3e MC	520	int n, ret;
d02b48c6	521
0f113f3e MC	522	n = strlen(str);
0f113f3e MC	523	ret = conn_write(bp, str, n);
26a7d938	524	return ret;
0f113f3e	525	}
d02b48c6	526
c45a48c1	527	BIO BIO_new_connect(const char str)
0f113f3e MC	528	{
	529	BIO *ret;
	530
	531	ret = BIO_new(BIO_s_connect());
	532	if (ret == NULL)
26a7d938	533	return NULL;
0f113f3e	534	if (BIO_set_conn_hostname(ret, str))
26a7d938	535	return ret;
ca3a82c3	536	BIO_free(ret);
26a7d938	537	return NULL;
0f113f3e	538	}
d02b48c6 RE	539
d02b48c6 RE	540	#endif