-/* crypto/bio/bss_conn.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
#include <stdio.h>
#include <errno.h>
-#define USE_SOCKETS
-#include "cryptlib.h"
-#include <openssl/bio.h>
-#ifndef OPENSSL_NO_SOCK
+#include "bio_lcl.h"
-# if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
-/* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
-# undef FIONBIO
-# endif
+#ifndef OPENSSL_NO_SOCK
typedef struct bio_connect_st {
int state;
+ int connect_family;
char *param_hostname;
- char *param_port;
- int nbio;
- unsigned char ip[4];
- unsigned short port;
- struct sockaddr_in them;
+ 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
BIO_CONNECT *BIO_CONNECT_new(void);
void BIO_CONNECT_free(BIO_CONNECT *a);
-static BIO_METHOD methods_connectp = {
+#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",
conn_write,
static int conn_state(BIO *b, BIO_CONNECT *c)
{
int ret = -1, i;
- unsigned long l;
- char *p, *q;
int (*cb) (const BIO *, int, int) = NULL;
if (c->info_callback != NULL)
for (;;) {
switch (c->state) {
case BIO_CONN_S_BEFORE:
- p = c->param_hostname;
- if (p == NULL) {
- BIOerr(BIO_F_CONN_STATE, BIO_R_NO_HOSTNAME_SPECIFIED);
+ 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;
}
- for (; *p != '\0'; p++) {
- if ((*p == ':') || (*p == '/'))
- break;
- }
+ c->state = BIO_CONN_S_GET_ADDR;
+ break;
- i = *p;
- if ((i == ':') || (i == '/')) {
-
- *(p++) = '\0';
- if (i == ':') {
- for (q = p; *q; q++)
- if (*q == '/') {
- *q = '\0';
- break;
- }
- OPENSSL_free(c->param_port);
- c->param_port = BUF_strdup(p);
+ 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->param_port == NULL) {
- BIOerr(BIO_F_CONN_STATE, BIO_R_NO_PORT_SPECIFIED);
- ERR_add_error_data(2, "host=", c->param_hostname);
+ if (c->addr_first == NULL) {
+ BIOerr(BIO_F_CONN_STATE, BIO_R_LOOKUP_RETURNED_NOTHING);
goto exit_loop;
}
- c->state = BIO_CONN_S_GET_IP;
- break;
-
- case BIO_CONN_S_GET_IP:
- if (BIO_get_host_ip(c->param_hostname, &(c->ip[0])) <= 0)
- goto exit_loop;
- c->state = BIO_CONN_S_GET_PORT;
- break;
-
- case BIO_CONN_S_GET_PORT:
- if (c->param_port == NULL) {
- /* abort(); */
- goto exit_loop;
- } else if (BIO_get_port(c->param_port, &c->port) <= 0)
- goto exit_loop;
+ c->addr_iter = c->addr_first;
c->state = BIO_CONN_S_CREATE_SOCKET;
break;
case BIO_CONN_S_CREATE_SOCKET:
- /* now setup address */
- memset(&c->them, 0, sizeof(c->them));
- c->them.sin_family = AF_INET;
- c->them.sin_port = htons((unsigned short)c->port);
- l = (unsigned long)
- ((unsigned long)c->ip[0] << 24L) |
- ((unsigned long)c->ip[1] << 16L) |
- ((unsigned long)c->ip[2] << 8L) | ((unsigned long)c->ip[3]);
- c->them.sin_addr.s_addr = htonl(l);
- c->state = BIO_CONN_S_CREATE_SOCKET;
-
- ret = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- if (ret == INVALID_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(SYS_F_SOCKET, get_last_socket_error());
- ERR_add_error_data(4, "host=", c->param_hostname,
- ":", c->param_port);
+ 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_NBIO;
- break;
-
- case BIO_CONN_S_NBIO:
- if (c->nbio) {
- if (!BIO_socket_nbio(b->num, 1)) {
- BIOerr(BIO_F_CONN_STATE, BIO_R_ERROR_SETTING_NBIO);
- ERR_add_error_data(4, "host=",
- c->param_hostname, ":", c->param_port);
- goto exit_loop;
- }
- }
c->state = BIO_CONN_S_CONNECT;
-
-# if defined(SO_KEEPALIVE)
- i = 1;
- i = setsockopt(b->num, SOL_SOCKET, SO_KEEPALIVE, (char *)&i,
- sizeof(i));
- if (i < 0) {
- SYSerr(SYS_F_SOCKET, get_last_socket_error());
- ERR_add_error_data(4, "host=", c->param_hostname,
- ":", c->param_port);
- BIOerr(BIO_F_CONN_STATE, BIO_R_KEEPALIVE);
- goto exit_loop;
- }
-# endif
break;
case BIO_CONN_S_CONNECT:
BIO_clear_retry_flags(b);
- ret = connect(b->num,
- (struct sockaddr *)&c->them, sizeof(c->them));
+ 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 (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(SYS_F_CONNECT, get_last_socket_error());
- ERR_add_error_data(4, "host=",
- c->param_hostname, ":", c->param_port);
+ 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
+ } else {
c->state = BIO_CONN_S_OK;
+ }
break;
case BIO_CONN_S_BLOCKED_CONNECT:
if (i) {
BIO_clear_retry_flags(b);
SYSerr(SYS_F_CONNECT, i);
- ERR_add_error_data(4, "host=",
- c->param_hostname, ":", c->param_port);
+ 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;
{
BIO_CONNECT *ret;
- if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL)
+ if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL)
return (NULL);
ret->state = BIO_CONN_S_BEFORE;
- ret->param_hostname = NULL;
- ret->param_port = NULL;
- ret->info_callback = NULL;
- ret->nbio = 0;
- ret->ip[0] = 0;
- ret->ip[1] = 0;
- ret->ip[2] = 0;
- ret->ip[3] = 0;
- ret->port = 0;
- memset(&ret->them, 0, sizeof(ret->them));
+ ret->connect_family = BIO_FAMILY_IPANY;
return (ret);
}
return;
OPENSSL_free(a->param_hostname);
- OPENSSL_free(a->param_port);
+ OPENSSL_free(a->param_service);
+ BIO_ADDRINFO_free(a->addr_first);
OPENSSL_free(a);
}
-BIO_METHOD *BIO_s_connect(void)
+const BIO_METHOD *BIO_s_connect(void)
{
return (&methods_connectp);
}
static int conn_new(BIO *bi)
{
bi->init = 0;
- bi->num = INVALID_SOCKET;
+ bi->num = (int)INVALID_SOCKET;
bi->flags = 0;
if ((bi->ptr = (char *)BIO_CONNECT_new()) == NULL)
return (0);
BIO_CONNECT *c;
c = (BIO_CONNECT *)bio->ptr;
- if (bio->num != INVALID_SOCKET) {
+ 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);
- closesocket(bio->num);
- bio->num = INVALID_SOCKET;
+ BIO_closesocket(bio->num);
+ bio->num = (int)INVALID_SOCKET;
}
}
{
BIO *dbio;
int *ip;
- const char **pptr;
+ const char **pptr = NULL;
long ret = 1;
BIO_CONNECT *data;
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:
pptr = (const char **)ptr;
if (num == 0) {
*pptr = data->param_hostname;
-
} else if (num == 1) {
- *pptr = data->param_port;
+ *pptr = data->param_service;
} else if (num == 2) {
- *pptr = (char *)&(data->ip[0]);
+ *pptr = (const char *)BIO_ADDRINFO_address(data->addr_iter);
} else if (num == 3) {
- *((int *)ptr) = data->port;
+ 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;
}
- if ((!b->init) || (ptr == NULL))
- *pptr = "not initialized";
- ret = 1;
+ } 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 = BUF_strdup(ptr);
+ 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_port);
- data->param_port = BUF_strdup(ptr);
+ OPENSSL_free(data->param_service);
+ data->param_service = BUF_strdup(ptr);
} else if (num == 2) {
- char buf[16];
- unsigned char *p = ptr;
-
- BIO_snprintf(buf, sizeof buf, "%d.%d.%d.%d",
- p[0], p[1], p[2], p[3]);
- OPENSSL_free(data->param_hostname);
- data->param_hostname = BUF_strdup(buf);
- memcpy(&(data->ip[0]), ptr, 4);
+ 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) {
- char buf[DECIMAL_SIZE(int) + 1];
-
- BIO_snprintf(buf, sizeof buf, "%d", *(int *)ptr);
- OPENSSL_free(data->param_port);
- data->param_port = BUF_strdup(buf);
- data->port = *(int *)ptr;
+ data->connect_family = *(int *)ptr;
+ } else {
+ ret = 0;
}
}
break;
case BIO_C_SET_NBIO:
- data->nbio = (int)num;
+ 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) {
case BIO_CTRL_DUP:
{
dbio = (BIO *)ptr;
- if (data->param_port)
- BIO_set_conn_port(dbio, data->param_port);
if (data->param_hostname)
BIO_set_conn_hostname(dbio, data->param_hostname);
- BIO_set_nbio(dbio, data->nbio);
+ 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
projects / openssl.git / blobdiff