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-rw-r--r--openssl/ssl/bio_ssl.c598
1 files changed, 598 insertions, 0 deletions
diff --git a/openssl/ssl/bio_ssl.c b/openssl/ssl/bio_ssl.c
new file mode 100644
index 000000000..420deb7fc
--- /dev/null
+++ b/openssl/ssl/bio_ssl.c
@@ -0,0 +1,598 @@
+/* ssl/bio_ssl.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 <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <openssl/crypto.h>
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+static int ssl_write(BIO *h, const char *buf, int num);
+static int ssl_read(BIO *h, char *buf, int size);
+static int ssl_puts(BIO *h, const char *str);
+static long ssl_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int ssl_new(BIO *h);
+static int ssl_free(BIO *data);
+static long ssl_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
+typedef struct bio_ssl_st
+ {
+ SSL *ssl; /* The ssl handle :-) */
+ /* re-negotiate every time the total number of bytes is this size */
+ int num_renegotiates;
+ unsigned long renegotiate_count;
+ unsigned long byte_count;
+ unsigned long renegotiate_timeout;
+ unsigned long last_time;
+ } BIO_SSL;
+
+static BIO_METHOD methods_sslp=
+ {
+ BIO_TYPE_SSL,"ssl",
+ ssl_write,
+ ssl_read,
+ ssl_puts,
+ NULL, /* ssl_gets, */
+ ssl_ctrl,
+ ssl_new,
+ ssl_free,
+ ssl_callback_ctrl,
+ };
+
+BIO_METHOD *BIO_f_ssl(void)
+ {
+ return(&methods_sslp);
+ }
+
+static int ssl_new(BIO *bi)
+ {
+ BIO_SSL *bs;
+
+ bs=(BIO_SSL *)OPENSSL_malloc(sizeof(BIO_SSL));
+ if (bs == NULL)
+ {
+ BIOerr(BIO_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
+ return(0);
+ }
+ memset(bs,0,sizeof(BIO_SSL));
+ bi->init=0;
+ bi->ptr=(char *)bs;
+ bi->flags=0;
+ return(1);
+ }
+
+static int ssl_free(BIO *a)
+ {
+ BIO_SSL *bs;
+
+ if (a == NULL) return(0);
+ bs=(BIO_SSL *)a->ptr;
+ if (bs->ssl != NULL) SSL_shutdown(bs->ssl);
+ if (a->shutdown)
+ {
+ if (a->init && (bs->ssl != NULL))
+ SSL_free(bs->ssl);
+ a->init=0;
+ a->flags=0;
+ }
+ if (a->ptr != NULL)
+ OPENSSL_free(a->ptr);
+ return(1);
+ }
+
+static int ssl_read(BIO *b, char *out, int outl)
+ {
+ int ret=1;
+ BIO_SSL *sb;
+ SSL *ssl;
+ int retry_reason=0;
+ int r=0;
+
+ if (out == NULL) return(0);
+ sb=(BIO_SSL *)b->ptr;
+ ssl=sb->ssl;
+
+ BIO_clear_retry_flags(b);
+
+#if 0
+ if (!SSL_is_init_finished(ssl))
+ {
+/* ret=SSL_do_handshake(ssl); */
+ if (ret > 0)
+ {
+
+ outflags=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
+ ret= -1;
+ goto end;
+ }
+ }
+#endif
+/* if (ret > 0) */
+ ret=SSL_read(ssl,out,outl);
+
+ switch (SSL_get_error(ssl,ret))
+ {
+ case SSL_ERROR_NONE:
+ if (ret <= 0) break;
+ if (sb->renegotiate_count > 0)
+ {
+ sb->byte_count+=ret;
+ if (sb->byte_count > sb->renegotiate_count)
+ {
+ sb->byte_count=0;
+ sb->num_renegotiates++;
+ SSL_renegotiate(ssl);
+ r=1;
+ }
+ }
+ if ((sb->renegotiate_timeout > 0) && (!r))
+ {
+ unsigned long tm;
+
+ tm=(unsigned long)time(NULL);
+ if (tm > sb->last_time+sb->renegotiate_timeout)
+ {
+ sb->last_time=tm;
+ sb->num_renegotiates++;
+ SSL_renegotiate(ssl);
+ }
+ }
+
+ break;
+ case SSL_ERROR_WANT_READ:
+ BIO_set_retry_read(b);
+ break;
+ case SSL_ERROR_WANT_WRITE:
+ BIO_set_retry_write(b);
+ break;
+ case SSL_ERROR_WANT_X509_LOOKUP:
+ BIO_set_retry_special(b);
+ retry_reason=BIO_RR_SSL_X509_LOOKUP;
+ break;
+ case SSL_ERROR_WANT_ACCEPT:
+ BIO_set_retry_special(b);
+ retry_reason=BIO_RR_ACCEPT;
+ break;
+ case SSL_ERROR_WANT_CONNECT:
+ BIO_set_retry_special(b);
+ retry_reason=BIO_RR_CONNECT;
+ break;
+ case SSL_ERROR_SYSCALL:
+ case SSL_ERROR_SSL:
+ case SSL_ERROR_ZERO_RETURN:
+ default:
+ break;
+ }
+
+ b->retry_reason=retry_reason;
+ return(ret);
+ }
+
+static int ssl_write(BIO *b, const char *out, int outl)
+ {
+ int ret,r=0;
+ int retry_reason=0;
+ SSL *ssl;
+ BIO_SSL *bs;
+
+ if (out == NULL) return(0);
+ bs=(BIO_SSL *)b->ptr;
+ ssl=bs->ssl;
+
+ BIO_clear_retry_flags(b);
+
+/* ret=SSL_do_handshake(ssl);
+ if (ret > 0) */
+ ret=SSL_write(ssl,out,outl);
+
+ switch (SSL_get_error(ssl,ret))
+ {
+ case SSL_ERROR_NONE:
+ if (ret <= 0) break;
+ if (bs->renegotiate_count > 0)
+ {
+ bs->byte_count+=ret;
+ if (bs->byte_count > bs->renegotiate_count)
+ {
+ bs->byte_count=0;
+ bs->num_renegotiates++;
+ SSL_renegotiate(ssl);
+ r=1;
+ }
+ }
+ if ((bs->renegotiate_timeout > 0) && (!r))
+ {
+ unsigned long tm;
+
+ tm=(unsigned long)time(NULL);
+ if (tm > bs->last_time+bs->renegotiate_timeout)
+ {
+ bs->last_time=tm;
+ bs->num_renegotiates++;
+ SSL_renegotiate(ssl);
+ }
+ }
+ break;
+ case SSL_ERROR_WANT_WRITE:
+ BIO_set_retry_write(b);
+ break;
+ case SSL_ERROR_WANT_READ:
+ BIO_set_retry_read(b);
+ break;
+ case SSL_ERROR_WANT_X509_LOOKUP:
+ BIO_set_retry_special(b);
+ retry_reason=BIO_RR_SSL_X509_LOOKUP;
+ break;
+ case SSL_ERROR_WANT_CONNECT:
+ BIO_set_retry_special(b);
+ retry_reason=BIO_RR_CONNECT;
+ case SSL_ERROR_SYSCALL:
+ case SSL_ERROR_SSL:
+ default:
+ break;
+ }
+
+ b->retry_reason=retry_reason;
+ return(ret);
+ }
+
+static long ssl_ctrl(BIO *b, int cmd, long num, void *ptr)
+ {
+ SSL **sslp,*ssl;
+ BIO_SSL *bs;
+ BIO *dbio,*bio;
+ long ret=1;
+
+ bs=(BIO_SSL *)b->ptr;
+ ssl=bs->ssl;
+ if ((ssl == NULL) && (cmd != BIO_C_SET_SSL))
+ return(0);
+ switch (cmd)
+ {
+ case BIO_CTRL_RESET:
+ SSL_shutdown(ssl);
+
+ if (ssl->handshake_func == ssl->method->ssl_connect)
+ SSL_set_connect_state(ssl);
+ else if (ssl->handshake_func == ssl->method->ssl_accept)
+ SSL_set_accept_state(ssl);
+
+ SSL_clear(ssl);
+
+ if (b->next_bio != NULL)
+ ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+ else if (ssl->rbio != NULL)
+ ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
+ else
+ ret=1;
+ break;
+ case BIO_CTRL_INFO:
+ ret=0;
+ break;
+ case BIO_C_SSL_MODE:
+ if (num) /* client mode */
+ SSL_set_connect_state(ssl);
+ else
+ SSL_set_accept_state(ssl);
+ break;
+ case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
+ ret=bs->renegotiate_timeout;
+ if (num < 60) num=5;
+ bs->renegotiate_timeout=(unsigned long)num;
+ bs->last_time=(unsigned long)time(NULL);
+ break;
+ case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
+ ret=bs->renegotiate_count;
+ if ((long)num >=512)
+ bs->renegotiate_count=(unsigned long)num;
+ break;
+ case BIO_C_GET_SSL_NUM_RENEGOTIATES:
+ ret=bs->num_renegotiates;
+ break;
+ case BIO_C_SET_SSL:
+ if (ssl != NULL)
+ ssl_free(b);
+ b->shutdown=(int)num;
+ ssl=(SSL *)ptr;
+ ((BIO_SSL *)b->ptr)->ssl=ssl;
+ bio=SSL_get_rbio(ssl);
+ if (bio != NULL)
+ {
+ if (b->next_bio != NULL)
+ BIO_push(bio,b->next_bio);
+ b->next_bio=bio;
+ CRYPTO_add(&bio->references,1,CRYPTO_LOCK_BIO);
+ }
+ b->init=1;
+ break;
+ case BIO_C_GET_SSL:
+ if (ptr != NULL)
+ {
+ sslp=(SSL **)ptr;
+ *sslp=ssl;
+ }
+ else
+ ret=0;
+ break;
+ case BIO_CTRL_GET_CLOSE:
+ ret=b->shutdown;
+ break;
+ case BIO_CTRL_SET_CLOSE:
+ b->shutdown=(int)num;
+ break;
+ case BIO_CTRL_WPENDING:
+ ret=BIO_ctrl(ssl->wbio,cmd,num,ptr);
+ break;
+ case BIO_CTRL_PENDING:
+ ret=SSL_pending(ssl);
+ if (ret == 0)
+ ret=BIO_pending(ssl->rbio);
+ break;
+ case BIO_CTRL_FLUSH:
+ BIO_clear_retry_flags(b);
+ ret=BIO_ctrl(ssl->wbio,cmd,num,ptr);
+ BIO_copy_next_retry(b);
+ break;
+ case BIO_CTRL_PUSH:
+ if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio))
+ {
+ SSL_set_bio(ssl,b->next_bio,b->next_bio);
+ CRYPTO_add(&b->next_bio->references,1,CRYPTO_LOCK_BIO);
+ }
+ break;
+ case BIO_CTRL_POP:
+ /* ugly bit of a hack */
+ if (ssl->rbio != ssl->wbio) /* we are in trouble :-( */
+ {
+ BIO_free_all(ssl->wbio);
+ }
+ if (b->next_bio != NULL)
+ {
+ CRYPTO_add(&b->next_bio->references,1,CRYPTO_LOCK_BIO);
+ }
+ ssl->wbio=NULL;
+ ssl->rbio=NULL;
+ break;
+ case BIO_C_DO_STATE_MACHINE:
+ BIO_clear_retry_flags(b);
+
+ b->retry_reason=0;
+ ret=(int)SSL_do_handshake(ssl);
+
+ switch (SSL_get_error(ssl,(int)ret))
+ {
+ case SSL_ERROR_WANT_READ:
+ BIO_set_flags(b,
+ BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
+ break;
+ case SSL_ERROR_WANT_WRITE:
+ BIO_set_flags(b,
+ BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);
+ break;
+ case SSL_ERROR_WANT_CONNECT:
+ BIO_set_flags(b,
+ BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY);
+ b->retry_reason=b->next_bio->retry_reason;
+ break;
+ default:
+ break;
+ }
+ break;
+ case BIO_CTRL_DUP:
+ dbio=(BIO *)ptr;
+ if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
+ SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
+ ((BIO_SSL *)dbio->ptr)->ssl=SSL_dup(ssl);
+ ((BIO_SSL *)dbio->ptr)->renegotiate_count=
+ ((BIO_SSL *)b->ptr)->renegotiate_count;
+ ((BIO_SSL *)dbio->ptr)->byte_count=
+ ((BIO_SSL *)b->ptr)->byte_count;
+ ((BIO_SSL *)dbio->ptr)->renegotiate_timeout=
+ ((BIO_SSL *)b->ptr)->renegotiate_timeout;
+ ((BIO_SSL *)dbio->ptr)->last_time=
+ ((BIO_SSL *)b->ptr)->last_time;
+ ret=(((BIO_SSL *)dbio->ptr)->ssl != NULL);
+ break;
+ case BIO_C_GET_FD:
+ ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
+ break;
+ case BIO_CTRL_SET_CALLBACK:
+ {
+#if 0 /* FIXME: Should this be used? -- Richard Levitte */
+ SSLerr(SSL_F_SSL_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ ret = -1;
+#else
+ ret=0;
+#endif
+ }
+ break;
+ case BIO_CTRL_GET_CALLBACK:
+ {
+ void (**fptr)(const SSL *xssl,int type,int val);
+
+ fptr=(void (**)(const SSL *xssl,int type,int val))ptr;
+ *fptr=SSL_get_info_callback(ssl);
+ }
+ break;
+ default:
+ ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
+ break;
+ }
+ return(ret);
+ }
+
+static long ssl_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
+ {
+ SSL *ssl;
+ BIO_SSL *bs;
+ long ret=1;
+
+ bs=(BIO_SSL *)b->ptr;
+ ssl=bs->ssl;
+ switch (cmd)
+ {
+ case BIO_CTRL_SET_CALLBACK:
+ {
+ /* FIXME: setting this via a completely different prototype
+ seems like a crap idea */
+ SSL_set_info_callback(ssl,(void (*)(const SSL *,int,int))fp);
+ }
+ break;
+ default:
+ ret=BIO_callback_ctrl(ssl->rbio,cmd,fp);
+ break;
+ }
+ return(ret);
+ }
+
+static int ssl_puts(BIO *bp, const char *str)
+ {
+ int n,ret;
+
+ n=strlen(str);
+ ret=BIO_write(bp,str,n);
+ return(ret);
+ }
+
+BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
+ {
+#ifndef OPENSSL_NO_SOCK
+ BIO *ret=NULL,*buf=NULL,*ssl=NULL;
+
+ if ((buf=BIO_new(BIO_f_buffer())) == NULL)
+ return(NULL);
+ if ((ssl=BIO_new_ssl_connect(ctx)) == NULL)
+ goto err;
+ if ((ret=BIO_push(buf,ssl)) == NULL)
+ goto err;
+ return(ret);
+err:
+ if (buf != NULL) BIO_free(buf);
+ if (ssl != NULL) BIO_free(ssl);
+#endif
+ return(NULL);
+ }
+
+BIO *BIO_new_ssl_connect(SSL_CTX *ctx)
+ {
+ BIO *ret=NULL,*con=NULL,*ssl=NULL;
+
+ if ((con=BIO_new(BIO_s_connect())) == NULL)
+ return(NULL);
+ if ((ssl=BIO_new_ssl(ctx,1)) == NULL)
+ goto err;
+ if ((ret=BIO_push(ssl,con)) == NULL)
+ goto err;
+ return(ret);
+err:
+ if (con != NULL) BIO_free(con);
+ if (ret != NULL) BIO_free(ret);
+ return(NULL);
+ }
+
+BIO *BIO_new_ssl(SSL_CTX *ctx, int client)
+ {
+ BIO *ret;
+ SSL *ssl;
+
+ if ((ret=BIO_new(BIO_f_ssl())) == NULL)
+ return(NULL);
+ if ((ssl=SSL_new(ctx)) == NULL)
+ {
+ BIO_free(ret);
+ return(NULL);
+ }
+ if (client)
+ SSL_set_connect_state(ssl);
+ else
+ SSL_set_accept_state(ssl);
+
+ BIO_set_ssl(ret,ssl,BIO_CLOSE);
+ return(ret);
+ }
+
+int BIO_ssl_copy_session_id(BIO *t, BIO *f)
+ {
+ t=BIO_find_type(t,BIO_TYPE_SSL);
+ f=BIO_find_type(f,BIO_TYPE_SSL);
+ if ((t == NULL) || (f == NULL))
+ return(0);
+ if ( (((BIO_SSL *)t->ptr)->ssl == NULL) ||
+ (((BIO_SSL *)f->ptr)->ssl == NULL))
+ return(0);
+ SSL_copy_session_id(((BIO_SSL *)t->ptr)->ssl,((BIO_SSL *)f->ptr)->ssl);
+ return(1);
+ }
+
+void BIO_ssl_shutdown(BIO *b)
+ {
+ SSL *s;
+
+ while (b != NULL)
+ {
+ if (b->method->type == BIO_TYPE_SSL)
+ {
+ s=((BIO_SSL *)b->ptr)->ssl;
+ SSL_shutdown(s);
+ break;
+ }
+ b=b->next_bio;
+ }
+ }