| /* 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 |
| |