--- /dev/null
+/* crypto/bio/bss_conn.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 <errno.h>
+#define USE_SOCKETS
+#include "cryptlib.h"
+#include <openssl/bio.h>
+
+#ifndef OPENSSL_NO_SOCK
+
+#ifdef OPENSSL_SYS_WIN16
+#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
+#else
+#define SOCKET_PROTOCOL IPPROTO_TCP
+#endif
+
+#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
+
+
+typedef struct bio_connect_st
+ {
+ int state;
+
+ char *param_hostname;
+ char *param_port;
+ int nbio;
+
+ unsigned char ip[4];
+ unsigned short port;
+
+ struct sockaddr_in them;
+
+ /* 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 */
+ int (*info_callback)(const BIO *bio,int state,int ret);
+ } 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);
+
+static BIO_METHOD methods_connectp=
+ {
+ BIO_TYPE_CONNECT,
+ "socket connect",
+ conn_write,
+ conn_read,
+ conn_puts,
+ NULL, /* connect_gets, */
+ conn_ctrl,
+ conn_new,
+ conn_free,
+ conn_callback_ctrl,
+ };
+
+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)
+ cb=c->info_callback;
+
+ 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);
+ goto exit_loop;
+ }
+ for ( ; *p != '\0'; p++)
+ {
+ if ((*p == ':') || (*p == '/')) break;
+ }
+
+ i= *p;
+ if ((i == ':') || (i == '/'))
+ {
+
+ *(p++)='\0';
+ if (i == ':')
+ {
+ for (q=p; *q; q++)
+ if (*q == '/')
+ {
+ *q='\0';
+ break;
+ }
+ if (c->param_port != NULL)
+ OPENSSL_free(c->param_port);
+ c->param_port=BUF_strdup(p);
+ }
+ }
+
+ if (c->param_port == NULL)
+ {
+ BIOerr(BIO_F_CONN_STATE,BIO_R_NO_PORT_SPECIFIED);
+ ERR_add_error_data(2,"host=",c->param_hostname);
+ 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->state=BIO_CONN_S_CREATE_SOCKET;
+ break;
+
+ case BIO_CONN_S_CREATE_SOCKET:
+ /* now setup address */
+ memset((char *)&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,SOCKET_PROTOCOL);
+ if (ret == INVALID_SOCKET)
+ {
+ 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_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) && !defined(OPENSSL_SYS_MPE)
+ 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));
+ 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;
+ }
+ else
+ {
+ SYSerr(SYS_F_CONNECT,get_last_socket_error());
+ ERR_add_error_data(4,"host=",
+ c->param_hostname,
+ ":",c->param_port);
+ 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(SYS_F_CONNECT,i);
+ ERR_add_error_data(4,"host=",
+ c->param_hostname,
+ ":",c->param_port);
+ 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)))
+ 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=(BIO_CONNECT *)OPENSSL_malloc(sizeof(BIO_CONNECT))) == 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((char *)&ret->them,0,sizeof(ret->them));
+ return(ret);
+ }
+
+void BIO_CONNECT_free(BIO_CONNECT *a)
+ {
+ if(a == NULL)
+ return;
+
+ if (a->param_hostname != NULL)
+ OPENSSL_free(a->param_hostname);
+ if (a->param_port != NULL)
+ OPENSSL_free(a->param_port);
+ OPENSSL_free(a);
+ }
+
+BIO_METHOD *BIO_s_connect(void)
+ {
+ return(&methods_connectp);
+ }
+
+static int conn_new(BIO *bi)
+ {
+ bi->init=0;
+ bi->num=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 != 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;
+ }
+ }
+
+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;
+ 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);
+ 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_port;
+ }
+ else if (num == 2)
+ {
+ *pptr= (char *)&(data->ip[0]);
+ }
+ else if (num == 3)
+ {
+ *((int *)ptr)=data->port;
+ }
+ if ((!b->init) || (ptr == NULL))
+ *pptr="not initialized";
+ ret=1;
+ }
+ break;
+ case BIO_C_SET_CONNECT:
+ if (ptr != NULL)
+ {
+ b->init=1;
+ if (num == 0)
+ {
+ if (data->param_hostname != NULL)
+ OPENSSL_free(data->param_hostname);
+ data->param_hostname=BUF_strdup(ptr);
+ }
+ else if (num == 1)
+ {
+ if (data->param_port != NULL)
+ OPENSSL_free(data->param_port);
+ data->param_port=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]);
+ if (data->param_hostname != NULL)
+ OPENSSL_free(data->param_hostname);
+ data->param_hostname=BUF_strdup(buf);
+ memcpy(&(data->ip[0]),ptr,4);
+ }
+ else if (num == 3)
+ {
+ char buf[DECIMAL_SIZE(int)+1];
+
+ BIO_snprintf(buf,sizeof buf,"%d",*(int *)ptr);
+ if (data->param_port != NULL)
+ OPENSSL_free(data->param_port);
+ data->param_port=BUF_strdup(buf);
+ data->port= *(int *)ptr;
+ }
+ }
+ break;
+ case BIO_C_SET_NBIO:
+ data->nbio=(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_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);
+ /* FIXME: the cast of the function seems unlikely to be a good idea */
+ (void)BIO_set_info_callback(dbio,(bio_info_cb *)data->info_callback);
+ }
+ break;
+ case BIO_CTRL_SET_CALLBACK:
+ {
+#if 0 /* FIXME: Should this be used? -- Richard Levitte */
+ BIOerr(BIO_F_CONN_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ ret = -1;
+#else
+ ret=0;
+#endif
+ }
+ break;
+ case BIO_CTRL_GET_CALLBACK:
+ {
+ int (**fptr)(const BIO *bio,int state,int xret);
+
+ fptr=(int (**)(const BIO *bio,int state,int xret))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=(int (*)(const struct bio_st *, int, int))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(char *str)
+ {
+ BIO *ret;
+
+ ret=BIO_new(BIO_s_connect());
+ if (ret == NULL) return(NULL);
+ if (BIO_set_conn_hostname(ret,str))
+ return(ret);
+ else
+ {
+ BIO_free(ret);
+ return(NULL);
+ }
+ }
+
+#endif
+
projects / cassiopeia.git / blobdiff