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-rw-r--r--openssl/crypto/bio/bss_acpt.c479
1 files changed, 479 insertions, 0 deletions
diff --git a/openssl/crypto/bio/bss_acpt.c b/openssl/crypto/bio/bss_acpt.c
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+++ b/openssl/crypto/bio/bss_acpt.c
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+/* crypto/bio/bss_acpt.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_accept_st
+ {
+ int state;
+ char *param_addr;
+
+ int accept_sock;
+ int accept_nbio;
+
+ char *addr;
+ int nbio;
+ /* If 0, it means normal, if 1, do a connect on bind failure,
+ * and if there is no-one listening, bind with SO_REUSEADDR.
+ * If 2, always use SO_REUSEADDR. */
+ int bind_mode;
+ BIO *bio_chain;
+ } BIO_ACCEPT;
+
+static int acpt_write(BIO *h, const char *buf, int num);
+static int acpt_read(BIO *h, char *buf, int size);
+static int acpt_puts(BIO *h, const char *str);
+static long acpt_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int acpt_new(BIO *h);
+static int acpt_free(BIO *data);
+static int acpt_state(BIO *b, BIO_ACCEPT *c);
+static void acpt_close_socket(BIO *data);
+BIO_ACCEPT *BIO_ACCEPT_new(void );
+void BIO_ACCEPT_free(BIO_ACCEPT *a);
+
+#define ACPT_S_BEFORE 1
+#define ACPT_S_GET_ACCEPT_SOCKET 2
+#define ACPT_S_OK 3
+
+static BIO_METHOD methods_acceptp=
+ {
+ BIO_TYPE_ACCEPT,
+ "socket accept",
+ acpt_write,
+ acpt_read,
+ acpt_puts,
+ NULL, /* connect_gets, */
+ acpt_ctrl,
+ acpt_new,
+ acpt_free,
+ NULL,
+ };
+
+BIO_METHOD *BIO_s_accept(void)
+ {
+ return(&methods_acceptp);
+ }
+
+static int acpt_new(BIO *bi)
+ {
+ BIO_ACCEPT *ba;
+
+ bi->init=0;
+ bi->num=INVALID_SOCKET;
+ bi->flags=0;
+ if ((ba=BIO_ACCEPT_new()) == NULL)
+ return(0);
+ bi->ptr=(char *)ba;
+ ba->state=ACPT_S_BEFORE;
+ bi->shutdown=1;
+ return(1);
+ }
+
+BIO_ACCEPT *BIO_ACCEPT_new(void)
+ {
+ BIO_ACCEPT *ret;
+
+ if ((ret=(BIO_ACCEPT *)OPENSSL_malloc(sizeof(BIO_ACCEPT))) == NULL)
+ return(NULL);
+
+ memset(ret,0,sizeof(BIO_ACCEPT));
+ ret->accept_sock=INVALID_SOCKET;
+ ret->bind_mode=BIO_BIND_NORMAL;
+ return(ret);
+ }
+
+void BIO_ACCEPT_free(BIO_ACCEPT *a)
+ {
+ if(a == NULL)
+ return;
+
+ if (a->param_addr != NULL) OPENSSL_free(a->param_addr);
+ if (a->addr != NULL) OPENSSL_free(a->addr);
+ if (a->bio_chain != NULL) BIO_free(a->bio_chain);
+ OPENSSL_free(a);
+ }
+
+static void acpt_close_socket(BIO *bio)
+ {
+ BIO_ACCEPT *c;
+
+ c=(BIO_ACCEPT *)bio->ptr;
+ if (c->accept_sock != INVALID_SOCKET)
+ {
+ shutdown(c->accept_sock,2);
+ closesocket(c->accept_sock);
+ c->accept_sock=INVALID_SOCKET;
+ bio->num=INVALID_SOCKET;
+ }
+ }
+
+static int acpt_free(BIO *a)
+ {
+ BIO_ACCEPT *data;
+
+ if (a == NULL) return(0);
+ data=(BIO_ACCEPT *)a->ptr;
+
+ if (a->shutdown)
+ {
+ acpt_close_socket(a);
+ BIO_ACCEPT_free(data);
+ a->ptr=NULL;
+ a->flags=0;
+ a->init=0;
+ }
+ return(1);
+ }
+
+static int acpt_state(BIO *b, BIO_ACCEPT *c)
+ {
+ BIO *bio=NULL,*dbio;
+ int s= -1;
+ int i;
+
+again:
+ switch (c->state)
+ {
+ case ACPT_S_BEFORE:
+ if (c->param_addr == NULL)
+ {
+ BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
+ return(-1);
+ }
+ s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
+ if (s == INVALID_SOCKET)
+ return(-1);
+
+ if (c->accept_nbio)
+ {
+ if (!BIO_socket_nbio(s,1))
+ {
+ closesocket(s);
+ BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
+ return(-1);
+ }
+ }
+ c->accept_sock=s;
+ b->num=s;
+ c->state=ACPT_S_GET_ACCEPT_SOCKET;
+ return(1);
+ /* break; */
+ case ACPT_S_GET_ACCEPT_SOCKET:
+ if (b->next_bio != NULL)
+ {
+ c->state=ACPT_S_OK;
+ goto again;
+ }
+ BIO_clear_retry_flags(b);
+ b->retry_reason=0;
+ i=BIO_accept(c->accept_sock,&(c->addr));
+
+ /* -2 return means we should retry */
+ if(i == -2)
+ {
+ BIO_set_retry_special(b);
+ b->retry_reason=BIO_RR_ACCEPT;
+ return -1;
+ }
+
+ if (i < 0) return(i);
+
+ bio=BIO_new_socket(i,BIO_CLOSE);
+ if (bio == NULL) goto err;
+
+ BIO_set_callback(bio,BIO_get_callback(b));
+ BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
+
+ if (c->nbio)
+ {
+ if (!BIO_socket_nbio(i,1))
+ {
+ BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
+ goto err;
+ }
+ }
+
+ /* If the accept BIO has an bio_chain, we dup it and
+ * put the new socket at the end. */
+ if (c->bio_chain != NULL)
+ {
+ if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
+ goto err;
+ if (!BIO_push(dbio,bio)) goto err;
+ bio=dbio;
+ }
+ if (BIO_push(b,bio) == NULL) goto err;
+
+ c->state=ACPT_S_OK;
+ return(1);
+err:
+ if (bio != NULL)
+ BIO_free(bio);
+ else if (s >= 0)
+ closesocket(s);
+ return(0);
+ /* break; */
+ case ACPT_S_OK:
+ if (b->next_bio == NULL)
+ {
+ c->state=ACPT_S_GET_ACCEPT_SOCKET;
+ goto again;
+ }
+ return(1);
+ /* break; */
+ default:
+ return(0);
+ /* break; */
+ }
+
+ }
+
+static int acpt_read(BIO *b, char *out, int outl)
+ {
+ int ret=0;
+ BIO_ACCEPT *data;
+
+ BIO_clear_retry_flags(b);
+ data=(BIO_ACCEPT *)b->ptr;
+
+ while (b->next_bio == NULL)
+ {
+ ret=acpt_state(b,data);
+ if (ret <= 0) return(ret);
+ }
+
+ ret=BIO_read(b->next_bio,out,outl);
+ BIO_copy_next_retry(b);
+ return(ret);
+ }
+
+static int acpt_write(BIO *b, const char *in, int inl)
+ {
+ int ret;
+ BIO_ACCEPT *data;
+
+ BIO_clear_retry_flags(b);
+ data=(BIO_ACCEPT *)b->ptr;
+
+ while (b->next_bio == NULL)
+ {
+ ret=acpt_state(b,data);
+ if (ret <= 0) return(ret);
+ }
+
+ ret=BIO_write(b->next_bio,in,inl);
+ BIO_copy_next_retry(b);
+ return(ret);
+ }
+
+static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr)
+ {
+ BIO *dbio;
+ int *ip;
+ long ret=1;
+ BIO_ACCEPT *data;
+ char **pp;
+
+ data=(BIO_ACCEPT *)b->ptr;
+
+ switch (cmd)
+ {
+ case BIO_CTRL_RESET:
+ ret=0;
+ data->state=ACPT_S_BEFORE;
+ acpt_close_socket(b);
+ b->flags=0;
+ break;
+ case BIO_C_DO_STATE_MACHINE:
+ /* use this one to start the connection */
+ ret=(long)acpt_state(b,data);
+ break;
+ case BIO_C_SET_ACCEPT:
+ if (ptr != NULL)
+ {
+ if (num == 0)
+ {
+ b->init=1;
+ if (data->param_addr != NULL)
+ OPENSSL_free(data->param_addr);
+ data->param_addr=BUF_strdup(ptr);
+ }
+ else if (num == 1)
+ {
+ data->accept_nbio=(ptr != NULL);
+ }
+ else if (num == 2)
+ {
+ if (data->bio_chain != NULL)
+ BIO_free(data->bio_chain);
+ data->bio_chain=(BIO *)ptr;
+ }
+ }
+ break;
+ case BIO_C_SET_NBIO:
+ data->nbio=(int)num;
+ break;
+ case BIO_C_SET_FD:
+ b->init=1;
+ b->num= *((int *)ptr);
+ data->accept_sock=b->num;
+ data->state=ACPT_S_GET_ACCEPT_SOCKET;
+ b->shutdown=(int)num;
+ b->init=1;
+ break;
+ case BIO_C_GET_FD:
+ if (b->init)
+ {
+ ip=(int *)ptr;
+ if (ip != NULL)
+ *ip=data->accept_sock;
+ ret=data->accept_sock;
+ }
+ else
+ ret= -1;
+ break;
+ case BIO_C_GET_ACCEPT:
+ if (b->init)
+ {
+ if (ptr != NULL)
+ {
+ pp=(char **)ptr;
+ *pp=data->param_addr;
+ }
+ else
+ ret= -1;
+ }
+ 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_C_SET_BIND_MODE:
+ data->bind_mode=(int)num;
+ break;
+ case BIO_C_GET_BIND_MODE:
+ ret=(long)data->bind_mode;
+ break;
+ case BIO_CTRL_DUP:
+ dbio=(BIO *)ptr;
+/* if (data->param_port) EAY EAY
+ BIO_set_port(dbio,data->param_port);
+ if (data->param_hostname)
+ BIO_set_hostname(dbio,data->param_hostname);
+ BIO_set_nbio(dbio,data->nbio); */
+ break;
+
+ default:
+ ret=0;
+ break;
+ }
+ return(ret);
+ }
+
+static int acpt_puts(BIO *bp, const char *str)
+ {
+ int n,ret;
+
+ n=strlen(str);
+ ret=acpt_write(bp,str,n);
+ return(ret);
+ }
+
+BIO *BIO_new_accept(char *str)
+ {
+ BIO *ret;
+
+ ret=BIO_new(BIO_s_accept());
+ if (ret == NULL) return(NULL);
+ if (BIO_set_accept_port(ret,str))
+ return(ret);
+ else
+ {
+ BIO_free(ret);
+ return(NULL);
+ }
+ }
+
+#endif
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