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

/*
 * Copyright 1995-2020 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_local.h"
#include "internal/ktls.h"

#ifndef OPENSSL_NO_SOCK

typedef struct bio_connect_st {
    int state;
    int connect_family;
    char *param_hostname;
    char *param_service;
    int connect_mode;
# ifndef OPENSSL_NO_KTLS
    unsigned char record_type;
# endif

    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
#define BIO_CONN_S_CONNECT_ERROR         7

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) {
                ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
                               "calling socket(%s, %s)",
                               c->param_hostname, 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 {
                    ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
                                   "calling connect(%s, %s)",
                                    c->param_hostname, c->param_service);
                    c->state = BIO_CONN_S_CONNECT_ERROR;
                    break;
                }
                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);
                ERR_raise_data(ERR_LIB_SYS, i,
                               "calling connect(%s, %s)",
                                c->param_hostname, 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_CONNECT_ERROR:
            BIOerr(BIO_F_CONN_STATE, BIO_R_CONNECT_ERROR);
            ret = 0;
            goto exit_loop;

        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();
# ifndef OPENSSL_NO_KTLS
        if (BIO_get_ktls_recv(b))
            ret = ktls_read_record(b->num, out, outl);
        else
# endif
            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);
            else if (ret == 0)
                b->flags |= BIO_FLAGS_IN_EOF;
        }
    }
    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();
# ifndef OPENSSL_NO_KTLS
    if (BIO_should_ktls_ctrl_msg_flag(b)) {
        ret = ktls_send_ctrl_message(b->num, data->record_type, in, inl);
        if (ret >= 0) {
            ret = inl;
            BIO_clear_ktls_ctrl_msg_flag(b);
        }
    } else
# endif
        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;
# ifndef OPENSSL_NO_KTLS
#  ifdef __FreeBSD__
    struct tls_enable *crypto_info;
#  else
    struct tls12_crypto_info_aes_gcm_128 *crypto_info;
#  endif
# endif

    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 = OPENSSL_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;
    case BIO_CTRL_EOF:
        ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0;
        break;
# ifndef OPENSSL_NO_KTLS
    case BIO_CTRL_SET_KTLS:
#  ifdef __FreeBSD__
        crypto_info = (struct tls_enable *)ptr;
#  else
        crypto_info = (struct tls12_crypto_info_aes_gcm_128 *)ptr;
#  endif
        ret = ktls_start(b->num, crypto_info, sizeof(*crypto_info), num);
        if (ret)
            BIO_set_ktls_flag(b, num);
        break;
    case BIO_CTRL_GET_KTLS_SEND:
        return BIO_should_ktls_flag(b, 1);
    case BIO_CTRL_GET_KTLS_RECV:
        return BIO_should_ktls_flag(b, 0);
    case BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG:
        BIO_set_ktls_ctrl_msg_flag(b);
        data->record_type = num;
        ret = 0;
        break;
    case BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG:
        BIO_clear_ktls_ctrl_msg_flag(b);
        ret = 0;
        break;
# endif
    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	/*
33388b44	2	* Copyright 1995-2020 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
706457b7	13	#include "bio_local.h"
b1f79e7c	14	#include "internal/ktls.h"
b00b2124	15
417be660	16	#ifndef OPENSSL_NO_SOCK
0f113f3e MC	17
	18	typedef struct bio_connect_st {
	19	int state;
417be660	20	int connect_family;
0f113f3e	21	char *param_hostname;
417be660 RL	22	char *param_service;
417be660 RL	23	int connect_mode;
b1f79e7c JB	24	# ifndef OPENSSL_NO_KTLS
	25	unsigned char record_type;
	26	# endif
417be660 RL	27
	28	BIO_ADDRINFO *addr_first;
	29	const BIO_ADDRINFO *addr_iter;
0f113f3e MC	30	/*
	31	* int socket; this will be kept in bio->num so that it is compatible
	32	* with the bss_sock bio
	33	*/
	34	/*
	35	* called when the connection is initially made callback(BIO,state,ret);
	36	* The callback should return 'ret'. state is for compatibility with the
	37	* ssl info_callback
	38	*/
fce78bd4	39	BIO_info_cb *info_callback;
0f113f3e	40	} BIO_CONNECT;
d02b48c6	41
0e1c0612 UM	42	static int conn_write(BIO h, const char buf, int num);
	43	static int conn_read(BIO h, char buf, int size);
	44	static int conn_puts(BIO h, const char str);
	45	static long conn_ctrl(BIO h, int cmd, long arg1, void arg2);
d02b48c6 RE	46	static int conn_new(BIO *h);
d02b48c6 RE	47	static int conn_free(BIO *data);
fce78bd4	48	static long conn_callback_ctrl(BIO h, int cmd, BIO_info_cb );
d02b48c6 RE	49
	50	static int conn_state(BIO b, BIO_CONNECT c);
	51	static void conn_close_socket(BIO *data);
0f113f3e	52	BIO_CONNECT *BIO_CONNECT_new(void);
d02b48c6 RE	53	void BIO_CONNECT_free(BIO_CONNECT *a);
d02b48c6 RE	54
417be660 RL	55	#define BIO_CONN_S_BEFORE 1
	56	#define BIO_CONN_S_GET_ADDR 2
	57	#define BIO_CONN_S_CREATE_SOCKET 3
	58	#define BIO_CONN_S_CONNECT 4
	59	#define BIO_CONN_S_OK 5
	60	#define BIO_CONN_S_BLOCKED_CONNECT 6
181f5185	61	#define BIO_CONN_S_CONNECT_ERROR 7
417be660	62
04f6b0fd	63	static const BIO_METHOD methods_connectp = {
0f113f3e MC	64	BIO_TYPE_CONNECT,
0f113f3e MC	65	"socket connect",
3befffa3 MC	66	/* TODO: Convert to new style write function */
3befffa3 MC	67	bwrite_conv,
0f113f3e	68	conn_write,
d07aee2c MC	69	/* TODO: Convert to new style read function */
d07aee2c MC	70	bread_conv,
0f113f3e MC	71	conn_read,
0f113f3e MC	72	conn_puts,
b4ff6622	73	NULL, /* conn_gets, */
0f113f3e MC	74	conn_ctrl,
	75	conn_new,
	76	conn_free,
	77	conn_callback_ctrl,
	78	};
d02b48c6	79
6b691a5c	80	static int conn_state(BIO b, BIO_CONNECT c)
0f113f3e MC	81	{
0f113f3e MC	82	int ret = -1, i;
fce78bd4	83	BIO_info_cb *cb = NULL;
0f113f3e MC	84
	85	if (c->info_callback != NULL)
	86	cb = c->info_callback;
	87
	88	for (;;) {
	89	switch (c->state) {
	90	case BIO_CONN_S_BEFORE:
417be660 RL	91	if (c->param_hostname == NULL && c->param_service == NULL) {
	92	BIOerr(BIO_F_CONN_STATE, BIO_R_NO_HOSTNAME_OR_SERVICE_SPECIFIED);
	93	ERR_add_error_data(4,
	94	"hostname=", c->param_hostname,
	95	" service=", c->param_service);
0f113f3e MC	96	goto exit_loop;
0f113f3e MC	97	}
417be660 RL	98	c->state = BIO_CONN_S_GET_ADDR;
417be660 RL	99	break;
0f113f3e	100
417be660 RL	101	case BIO_CONN_S_GET_ADDR:
	102	{
	103	int family = AF_UNSPEC;
	104	switch (c->connect_family) {
	105	case BIO_FAMILY_IPV6:
	106	if (1) { /* This is a trick we use to avoid bit rot.
	107	* at least the "else" part will always be
	108	* compiled.
	109	*/
	110	#ifdef AF_INET6
	111	family = AF_INET6;
	112	} else {
	113	#endif
	114	BIOerr(BIO_F_CONN_STATE, BIO_R_UNAVAILABLE_IP_FAMILY);
	115	goto exit_loop;
	116	}
	117	break;
	118	case BIO_FAMILY_IPV4:
	119	family = AF_INET;
	120	break;
	121	case BIO_FAMILY_IPANY:
	122	family = AF_UNSPEC;
	123	break;
	124	default:
	125	BIOerr(BIO_F_CONN_STATE, BIO_R_UNSUPPORTED_IP_FAMILY);
	126	goto exit_loop;
0f113f3e	127	}
417be660 RL	128	if (BIO_lookup(c->param_hostname, c->param_service,
	129	BIO_LOOKUP_CLIENT,
	130	family, SOCK_STREAM, &c->addr_first) == 0)
	131	goto exit_loop;
0f113f3e	132	}
417be660 RL	133	if (c->addr_first == NULL) {
417be660 RL	134	BIOerr(BIO_F_CONN_STATE, BIO_R_LOOKUP_RETURNED_NOTHING);
0f113f3e MC	135	goto exit_loop;
0f113f3e MC	136	}
417be660	137	c->addr_iter = c->addr_first;
0f113f3e MC	138	c->state = BIO_CONN_S_CREATE_SOCKET;
	139	break;
	140
	141	case BIO_CONN_S_CREATE_SOCKET:
417be660 RL	142	ret = BIO_socket(BIO_ADDRINFO_family(c->addr_iter),
	143	BIO_ADDRINFO_socktype(c->addr_iter),
	144	BIO_ADDRINFO_protocol(c->addr_iter), 0);
b13fdc48	145	if (ret == (int)INVALID_SOCKET) {
ff988500 RS	146	ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
	147	"calling socket(%s, %s)",
	148	c->param_hostname, c->param_service);
0f113f3e MC	149	BIOerr(BIO_F_CONN_STATE, BIO_R_UNABLE_TO_CREATE_SOCKET);
	150	goto exit_loop;
	151	}
	152	b->num = ret;
0f113f3e	153	c->state = BIO_CONN_S_CONNECT;
0f113f3e MC	154	break;
	155
	156	case BIO_CONN_S_CONNECT:
	157	BIO_clear_retry_flags(b);
417be660 RL	158	ret = BIO_connect(b->num, BIO_ADDRINFO_address(c->addr_iter),
417be660 RL	159	BIO_SOCK_KEEPALIVE \| c->connect_mode);
0f113f3e	160	b->retry_reason = 0;
a043d0b9	161	if (ret == 0) {
0f113f3e MC	162	if (BIO_sock_should_retry(ret)) {
	163	BIO_set_retry_special(b);
	164	c->state = BIO_CONN_S_BLOCKED_CONNECT;
	165	b->retry_reason = BIO_RR_CONNECT;
417be660 RL	166	ERR_clear_error();
	167	} else if ((c->addr_iter = BIO_ADDRINFO_next(c->addr_iter))
	168	!= NULL) {
	169	/*
	170	* if there are more addresses to try, do that first
	171	*/
	172	BIO_closesocket(b->num);
	173	c->state = BIO_CONN_S_CREATE_SOCKET;
	174	ERR_clear_error();
	175	break;
0f113f3e	176	} else {
ff988500 RS	177	ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
	178	"calling connect(%s, %s)",
	179	c->param_hostname, c->param_service);
181f5185 RL	180	c->state = BIO_CONN_S_CONNECT_ERROR;
181f5185 RL	181	break;
0f113f3e MC	182	}
0f113f3e MC	183	goto exit_loop;
417be660	184	} else {
0f113f3e	185	c->state = BIO_CONN_S_OK;
417be660	186	}
0f113f3e MC	187	break;
	188
	189	case BIO_CONN_S_BLOCKED_CONNECT:
	190	i = BIO_sock_error(b->num);
	191	if (i) {
	192	BIO_clear_retry_flags(b);
ff988500 RS	193	ERR_raise_data(ERR_LIB_SYS, i,
	194	"calling connect(%s, %s)",
	195	c->param_hostname, c->param_service);
0f113f3e MC	196	BIOerr(BIO_F_CONN_STATE, BIO_R_NBIO_CONNECT_ERROR);
	197	ret = 0;
	198	goto exit_loop;
	199	} else
	200	c->state = BIO_CONN_S_OK;
	201	break;
	202
181f5185 RL	203	case BIO_CONN_S_CONNECT_ERROR:
	204	BIOerr(BIO_F_CONN_STATE, BIO_R_CONNECT_ERROR);
	205	ret = 0;
	206	goto exit_loop;
	207
0f113f3e MC	208	case BIO_CONN_S_OK:
	209	ret = 1;
	210	goto exit_loop;
	211	default:
	212	/* abort(); */
	213	goto exit_loop;
	214	}
	215
	216	if (cb != NULL) {
75ebbd9a	217	if ((ret = cb((BIO *)b, c->state, ret)) == 0)
0f113f3e MC	218	goto end;
	219	}
	220	}
	221
	222	/* Loop does not exit */
	223	exit_loop:
	224	if (cb != NULL)
	225	ret = cb((BIO *)b, c->state, ret);
	226	end:
26a7d938	227	return ret;
0f113f3e	228	}
d02b48c6	229
6b691a5c	230	BIO_CONNECT *BIO_CONNECT_new(void)
0f113f3e MC	231	{
	232	BIO_CONNECT *ret;
	233
f06080cb F	234	if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
f06080cb F	235	BIOerr(BIO_F_BIO_CONNECT_NEW, ERR_R_MALLOC_FAILURE);
26a7d938	236	return NULL;
f06080cb	237	}
0f113f3e	238	ret->state = BIO_CONN_S_BEFORE;
417be660	239	ret->connect_family = BIO_FAMILY_IPANY;
26a7d938	240	return ret;
0f113f3e	241	}
d02b48c6	242
6b691a5c	243	void BIO_CONNECT_free(BIO_CONNECT *a)
0f113f3e	244	{
e6e9170d RS	245	if (a == NULL)
e6e9170d RS	246	return;
b548a1f1	247	OPENSSL_free(a->param_hostname);
417be660 RL	248	OPENSSL_free(a->param_service);
417be660 RL	249	BIO_ADDRINFO_free(a->addr_first);
0f113f3e MC	250	OPENSSL_free(a);
0f113f3e MC	251	}
d02b48c6	252
04f6b0fd	253	const BIO_METHOD *BIO_s_connect(void)
0f113f3e	254	{
26a7d938	255	return &methods_connectp;
0f113f3e	256	}
d02b48c6	257
6b691a5c	258	static int conn_new(BIO *bi)
0f113f3e MC	259	{
0f113f3e MC	260	bi->init = 0;
b13fdc48	261	bi->num = (int)INVALID_SOCKET;
0f113f3e MC	262	bi->flags = 0;
0f113f3e MC	263	if ((bi->ptr = (char *)BIO_CONNECT_new()) == NULL)
26a7d938	264	return 0;
0f113f3e	265	else
208fb891	266	return 1;
0f113f3e	267	}
d02b48c6	268
6b691a5c	269	static void conn_close_socket(BIO *bio)
0f113f3e MC	270	{
	271	BIO_CONNECT *c;
	272
	273	c = (BIO_CONNECT *)bio->ptr;
b13fdc48	274	if (bio->num != (int)INVALID_SOCKET) {
0f113f3e MC	275	/* Only do a shutdown if things were established */
	276	if (c->state == BIO_CONN_S_OK)
	277	shutdown(bio->num, 2);
417be660	278	BIO_closesocket(bio->num);
b13fdc48	279	bio->num = (int)INVALID_SOCKET;
0f113f3e MC	280	}
0f113f3e MC	281	}
d02b48c6	282
6b691a5c	283	static int conn_free(BIO *a)
0f113f3e MC	284	{
	285	BIO_CONNECT *data;
	286
	287	if (a == NULL)
26a7d938	288	return 0;
0f113f3e MC	289	data = (BIO_CONNECT *)a->ptr;
	290
	291	if (a->shutdown) {
	292	conn_close_socket(a);
	293	BIO_CONNECT_free(data);
	294	a->ptr = NULL;
	295	a->flags = 0;
	296	a->init = 0;
	297	}
208fb891	298	return 1;
0f113f3e MC	299	}
0f113f3e MC	300
6b691a5c	301	static int conn_read(BIO b, char out, int outl)
0f113f3e MC	302	{
	303	int ret = 0;
	304	BIO_CONNECT *data;
	305
	306	data = (BIO_CONNECT *)b->ptr;
	307	if (data->state != BIO_CONN_S_OK) {
	308	ret = conn_state(b, data);
	309	if (ret <= 0)
26a7d938	310	return ret;
0f113f3e MC	311	}
	312
	313	if (out != NULL) {
	314	clear_socket_error();
b1f79e7c JB	315	# ifndef OPENSSL_NO_KTLS
	316	if (BIO_get_ktls_recv(b))
	317	ret = ktls_read_record(b->num, out, outl);
	318	else
	319	# endif
	320	ret = readsocket(b->num, out, outl);
0f113f3e MC	321	BIO_clear_retry_flags(b);
	322	if (ret <= 0) {
	323	if (BIO_sock_should_retry(ret))
	324	BIO_set_retry_read(b);
6d53ad6b MC	325	else if (ret == 0)
6d53ad6b MC	326	b->flags \|= BIO_FLAGS_IN_EOF;
0f113f3e MC	327	}
0f113f3e MC	328	}
26a7d938	329	return ret;
0f113f3e	330	}
d02b48c6	331
0e1c0612	332	static int conn_write(BIO b, const char in, int inl)
0f113f3e MC	333	{
	334	int ret;
	335	BIO_CONNECT *data;
	336
	337	data = (BIO_CONNECT *)b->ptr;
	338	if (data->state != BIO_CONN_S_OK) {
	339	ret = conn_state(b, data);
	340	if (ret <= 0)
26a7d938	341	return ret;
0f113f3e MC	342	}
	343
	344	clear_socket_error();
b1f79e7c JB	345	# ifndef OPENSSL_NO_KTLS
	346	if (BIO_should_ktls_ctrl_msg_flag(b)) {
	347	ret = ktls_send_ctrl_message(b->num, data->record_type, in, inl);
	348	if (ret >= 0) {
	349	ret = inl;
	350	BIO_clear_ktls_ctrl_msg_flag(b);
	351	}
	352	} else
	353	# endif
	354	ret = writesocket(b->num, in, inl);
0f113f3e MC	355	BIO_clear_retry_flags(b);
	356	if (ret <= 0) {
	357	if (BIO_sock_should_retry(ret))
	358	BIO_set_retry_write(b);
	359	}
26a7d938	360	return ret;
0f113f3e	361	}
d02b48c6	362
0e1c0612	363	static long conn_ctrl(BIO b, int cmd, long num, void ptr)
0f113f3e MC	364	{
	365	BIO *dbio;
	366	int *ip;
4b72d5f8	367	const char **pptr = NULL;
0f113f3e MC	368	long ret = 1;
0f113f3e MC	369	BIO_CONNECT *data;
b1f79e7c JB	370	# ifndef OPENSSL_NO_KTLS
	371	# ifdef __FreeBSD__
	372	struct tls_enable *crypto_info;
	373	# else
	374	struct tls12_crypto_info_aes_gcm_128 *crypto_info;
	375	# endif
	376	# endif
0f113f3e MC	377
	378	data = (BIO_CONNECT *)b->ptr;
	379
	380	switch (cmd) {
	381	case BIO_CTRL_RESET:
	382	ret = 0;
	383	data->state = BIO_CONN_S_BEFORE;
	384	conn_close_socket(b);
417be660 RL	385	BIO_ADDRINFO_free(data->addr_first);
417be660 RL	386	data->addr_first = NULL;
0f113f3e MC	387	b->flags = 0;
	388	break;
	389	case BIO_C_DO_STATE_MACHINE:
	390	/* use this one to start the connection */
	391	if (data->state != BIO_CONN_S_OK)
	392	ret = (long)conn_state(b, data);
	393	else
	394	ret = 1;
	395	break;
	396	case BIO_C_GET_CONNECT:
	397	if (ptr != NULL) {
	398	pptr = (const char **)ptr;
417be660 RL	399	if (num == 0) {
	400	*pptr = data->param_hostname;
	401	} else if (num == 1) {
	402	*pptr = data->param_service;
	403	} else if (num == 2) {
	404	pptr = (const char )BIO_ADDRINFO_address(data->addr_iter);
	405	} else if (num == 3) {
	406	switch (BIO_ADDRINFO_family(data->addr_iter)) {
	407	# ifdef AF_INET6
	408	case AF_INET6:
	409	ret = BIO_FAMILY_IPV6;
	410	break;
	411	# endif
	412	case AF_INET:
	413	ret = BIO_FAMILY_IPV4;
	414	break;
	415	case 0:
	416	ret = data->connect_family;
	417	break;
	418	default:
	419	ret = -1;
	420	break;
4b72d5f8	421	}
417be660 RL	422	} else {
417be660 RL	423	ret = 0;
4b72d5f8 RL	424	}
4b72d5f8 RL	425	} else {
4b72d5f8	426	ret = 0;
0f113f3e MC	427	}
	428	break;
	429	case BIO_C_SET_CONNECT:
	430	if (ptr != NULL) {
	431	b->init = 1;
	432	if (num == 0) {
417be660 RL	433	char *hold_service = data->param_service;
	434	/* We affect the hostname regardless. However, the input
	435	* string might contain a host:service spec, so we must
	436	* parse it, which might or might not affect the service
	437	*/
b548a1f1	438	OPENSSL_free(data->param_hostname);
417be660 RL	439	data->param_hostname = NULL;
	440	ret = BIO_parse_hostserv(ptr,
	441	&data->param_hostname,
	442	&data->param_service,
	443	BIO_PARSE_PRIO_HOST);
	444	if (hold_service != data->param_service)
	445	OPENSSL_free(hold_service);
0f113f3e	446	} else if (num == 1) {
417be660	447	OPENSSL_free(data->param_service);
3d484574	448	data->param_service = OPENSSL_strdup(ptr);
0f113f3e	449	} else if (num == 2) {
417be660 RL	450	const BIO_ADDR addr = (const BIO_ADDR )ptr;
	451	if (ret) {
	452	data->param_hostname = BIO_ADDR_hostname_string(addr, 1);
	453	data->param_service = BIO_ADDR_service_string(addr, 1);
	454	BIO_ADDRINFO_free(data->addr_first);
	455	data->addr_first = NULL;
	456	data->addr_iter = NULL;
	457	}
0f113f3e	458	} else if (num == 3) {
417be660 RL	459	data->connect_family = (int )ptr;
	460	} else {
	461	ret = 0;
0f113f3e MC	462	}
	463	}
	464	break;
	465	case BIO_C_SET_NBIO:
417be660 RL	466	if (num != 0)
	467	data->connect_mode \|= BIO_SOCK_NONBLOCK;
	468	else
	469	data->connect_mode &= ~BIO_SOCK_NONBLOCK;
	470	break;
	471	case BIO_C_SET_CONNECT_MODE:
	472	data->connect_mode = (int)num;
0f113f3e MC	473	break;
	474	case BIO_C_GET_FD:
	475	if (b->init) {
	476	ip = (int *)ptr;
	477	if (ip != NULL)
	478	*ip = b->num;
	479	ret = b->num;
	480	} else
	481	ret = -1;
	482	break;
	483	case BIO_CTRL_GET_CLOSE:
	484	ret = b->shutdown;
	485	break;
	486	case BIO_CTRL_SET_CLOSE:
	487	b->shutdown = (int)num;
	488	break;
	489	case BIO_CTRL_PENDING:
	490	case BIO_CTRL_WPENDING:
	491	ret = 0;
	492	break;
	493	case BIO_CTRL_FLUSH:
	494	break;
	495	case BIO_CTRL_DUP:
	496	{
	497	dbio = (BIO *)ptr;
0f113f3e MC	498	if (data->param_hostname)
0f113f3e MC	499	BIO_set_conn_hostname(dbio, data->param_hostname);
417be660 RL	500	if (data->param_service)
	501	BIO_set_conn_port(dbio, data->param_service);
	502	BIO_set_conn_ip_family(dbio, data->connect_family);
	503	BIO_set_conn_mode(dbio, data->connect_mode);
0f113f3e MC	504	/*
	505	* FIXME: the cast of the function seems unlikely to be a good
	506	* idea
	507	*/
fce78bd4	508	(void)BIO_set_info_callback(dbio, data->info_callback);
0f113f3e MC	509	}
	510	break;
	511	case BIO_CTRL_SET_CALLBACK:
2722ff50	512	ret = 0; /* use callback ctrl */
0f113f3e MC	513	break;
	514	case BIO_CTRL_GET_CALLBACK:
	515	{
fce78bd4	516	BIO_info_cb **fptr;
0f113f3e	517
fce78bd4	518	fptr = (BIO_info_cb **)ptr;
0f113f3e MC	519	*fptr = data->info_callback;
	520	}
	521	break;
6d53ad6b MC	522	case BIO_CTRL_EOF:
	523	ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0;
	524	break;
b1f79e7c JB	525	# ifndef OPENSSL_NO_KTLS
	526	case BIO_CTRL_SET_KTLS:
	527	# ifdef __FreeBSD__
	528	crypto_info = (struct tls_enable *)ptr;
	529	# else
	530	crypto_info = (struct tls12_crypto_info_aes_gcm_128 *)ptr;
	531	# endif
	532	ret = ktls_start(b->num, crypto_info, sizeof(*crypto_info), num);
	533	if (ret)
	534	BIO_set_ktls_flag(b, num);
	535	break;
	536	case BIO_CTRL_GET_KTLS_SEND:
	537	return BIO_should_ktls_flag(b, 1);
	538	case BIO_CTRL_GET_KTLS_RECV:
	539	return BIO_should_ktls_flag(b, 0);
	540	case BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG:
	541	BIO_set_ktls_ctrl_msg_flag(b);
	542	data->record_type = num;
	543	ret = 0;
	544	break;
	545	case BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG:
	546	BIO_clear_ktls_ctrl_msg_flag(b);
	547	ret = 0;
	548	break;
	549	# endif
0f113f3e MC	550	default:
	551	ret = 0;
	552	break;
	553	}
26a7d938	554	return ret;
0f113f3e	555	}
d02b48c6	556
fce78bd4	557	static long conn_callback_ctrl(BIO b, int cmd, BIO_info_cb fp)
0f113f3e MC	558	{
	559	long ret = 1;
	560	BIO_CONNECT *data;
	561
	562	data = (BIO_CONNECT *)b->ptr;
	563
	564	switch (cmd) {
	565	case BIO_CTRL_SET_CALLBACK:
	566	{
fce78bd4	567	data->info_callback = fp;
0f113f3e MC	568	}
	569	break;
	570	default:
	571	ret = 0;
	572	break;
	573	}
26a7d938	574	return ret;
0f113f3e	575	}
d3442bc7	576
0e1c0612	577	static int conn_puts(BIO bp, const char str)
0f113f3e MC	578	{
0f113f3e MC	579	int n, ret;
d02b48c6	580
0f113f3e MC	581	n = strlen(str);
0f113f3e MC	582	ret = conn_write(bp, str, n);
26a7d938	583	return ret;
0f113f3e	584	}
d02b48c6	585
c45a48c1	586	BIO BIO_new_connect(const char str)
0f113f3e MC	587	{
	588	BIO *ret;
	589
	590	ret = BIO_new(BIO_s_connect());
	591	if (ret == NULL)
26a7d938	592	return NULL;
0f113f3e	593	if (BIO_set_conn_hostname(ret, str))
26a7d938	594	return ret;
ca3a82c3	595	BIO_free(ret);
26a7d938	596	return NULL;
0f113f3e	597	}
d02b48c6 RE	598
d02b48c6 RE	599	#endif