diff options
Diffstat (limited to 'openssl/crypto/bio/bss_rtcp.c')
| -rw-r--r-- | openssl/crypto/bio/bss_rtcp.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/openssl/crypto/bio/bss_rtcp.c b/openssl/crypto/bio/bss_rtcp.c new file mode 100644 index 000000000..7dae48556 --- /dev/null +++ b/openssl/crypto/bio/bss_rtcp.c @@ -0,0 +1,294 @@ +/* crypto/bio/bss_rtcp.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.] + */ + +/* Written by David L. Jones <jonesd@kcgl1.eng.ohio-state.edu> + * Date: 22-JUL-1996 + * Revised: 25-SEP-1997 Update for 0.8.1, BIO_CTRL_SET -> BIO_C_SET_FD + */ +/* VMS */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include "cryptlib.h" +#include <openssl/bio.h> + +#include <iodef.h> /* VMS IO$_ definitions */ +#include <starlet.h> + +typedef unsigned short io_channel; +/*************************************************************************/ +struct io_status { short status, count; long flags; }; + +struct rpc_msg { /* Should have member alignment inhibited */ + char channel; /* 'A'-app data. 'R'-remote client 'G'-global */ + char function; /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */ + unsigned short int length; /* Amount of data returned or max to return */ + char data[4092]; /* variable data */ +}; +#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092) + +struct rpc_ctx { + int filled, pos; + struct rpc_msg msg; +}; + +static int rtcp_write(BIO *h,const char *buf,int num); +static int rtcp_read(BIO *h,char *buf,int size); +static int rtcp_puts(BIO *h,const char *str); +static int rtcp_gets(BIO *h,char *str,int size); +static long rtcp_ctrl(BIO *h,int cmd,long arg1,void *arg2); +static int rtcp_new(BIO *h); +static int rtcp_free(BIO *data); + +static BIO_METHOD rtcp_method= + { + BIO_TYPE_FD, + "RTCP", + rtcp_write, + rtcp_read, + rtcp_puts, + rtcp_gets, + rtcp_ctrl, + rtcp_new, + rtcp_free, + NULL, + }; + +BIO_METHOD *BIO_s_rtcp(void) + { + return(&rtcp_method); + } +/*****************************************************************************/ +/* Decnet I/O routines. + */ + +#ifdef __DECC +#pragma message save +#pragma message disable DOLLARID +#endif + +static int get ( io_channel chan, char *buffer, int maxlen, int *length ) +{ + int status; + struct io_status iosb; + status = sys$qiow ( 0, chan, IO$_READVBLK, &iosb, 0, 0, + buffer, maxlen, 0, 0, 0, 0 ); + if ( (status&1) == 1 ) status = iosb.status; + if ( (status&1) == 1 ) *length = iosb.count; + return status; +} + +static int put ( io_channel chan, char *buffer, int length ) +{ + int status; + struct io_status iosb; + status = sys$qiow ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0, + buffer, length, 0, 0, 0, 0 ); + if ( (status&1) == 1 ) status = iosb.status; + return status; +} + +#ifdef __DECC +#pragma message restore +#endif + +/***************************************************************************/ + +static int rtcp_new(BIO *bi) +{ + struct rpc_ctx *ctx; + bi->init=1; + bi->num=0; + bi->flags = 0; + bi->ptr=OPENSSL_malloc(sizeof(struct rpc_ctx)); + ctx = (struct rpc_ctx *) bi->ptr; + ctx->filled = 0; + ctx->pos = 0; + return(1); +} + +static int rtcp_free(BIO *a) +{ + if (a == NULL) return(0); + if ( a->ptr ) OPENSSL_free ( a->ptr ); + a->ptr = NULL; + return(1); +} + +static int rtcp_read(BIO *b, char *out, int outl) +{ + int status, length; + struct rpc_ctx *ctx; + /* + * read data, return existing. + */ + ctx = (struct rpc_ctx *) b->ptr; + if ( ctx->pos < ctx->filled ) { + length = ctx->filled - ctx->pos; + if ( length > outl ) length = outl; + memmove ( out, &ctx->msg.data[ctx->pos], length ); + ctx->pos += length; + return length; + } + /* + * Requst more data from R channel. + */ + ctx->msg.channel = 'R'; + ctx->msg.function = 'G'; + ctx->msg.length = sizeof(ctx->msg.data); + status = put ( b->num, (char *) &ctx->msg, RPC_HDR_SIZE ); + if ( (status&1) == 0 ) { + return -1; + } + /* + * Read. + */ + ctx->pos = ctx->filled = 0; + status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length ); + if ( (status&1) == 0 ) length = -1; + if ( ctx->msg.channel != 'R' || ctx->msg.function != 'C' ) { + length = -1; + } + ctx->filled = length - RPC_HDR_SIZE; + + if ( ctx->pos < ctx->filled ) { + length = ctx->filled - ctx->pos; + if ( length > outl ) length = outl; + memmove ( out, ctx->msg.data, length ); + ctx->pos += length; + return length; + } + + return length; +} + +static int rtcp_write(BIO *b, const char *in, int inl) +{ + int status, i, segment, length; + struct rpc_ctx *ctx; + /* + * Output data, send in chunks no larger that sizeof(ctx->msg.data). + */ + ctx = (struct rpc_ctx *) b->ptr; + for ( i = 0; i < inl; i += segment ) { + segment = inl - i; + if ( segment > sizeof(ctx->msg.data) ) segment = sizeof(ctx->msg.data); + ctx->msg.channel = 'R'; + ctx->msg.function = 'P'; + ctx->msg.length = segment; + memmove ( ctx->msg.data, &in[i], segment ); + status = put ( b->num, (char *) &ctx->msg, segment + RPC_HDR_SIZE ); + if ((status&1) == 0 ) { i = -1; break; } + + status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length ); + if ( ((status&1) == 0) || (length < RPC_HDR_SIZE) ) { i = -1; break; } + if ( (ctx->msg.channel != 'R') || (ctx->msg.function != 'C') ) { + printf("unexpected response when confirming put %c %c\n", + ctx->msg.channel, ctx->msg.function ); + + } + } + return(i); +} + +static long rtcp_ctrl(BIO *b, int cmd, long num, void *ptr) + { + long ret=1; + + switch (cmd) + { + case BIO_CTRL_RESET: + case BIO_CTRL_EOF: + ret = 1; + break; + case BIO_C_SET_FD: + b->num = num; + ret = 1; + break; + case BIO_CTRL_SET_CLOSE: + case BIO_CTRL_FLUSH: + case BIO_CTRL_DUP: + ret=1; + break; + case BIO_CTRL_GET_CLOSE: + case BIO_CTRL_INFO: + case BIO_CTRL_GET: + case BIO_CTRL_PENDING: + case BIO_CTRL_WPENDING: + default: + ret=0; + break; + } + return(ret); + } + +static int rtcp_gets(BIO *bp, char *buf, int size) + { + return(0); + } + +static int rtcp_puts(BIO *bp, const char *str) +{ + int length; + if (str == NULL) return(0); + length = strlen ( str ); + if ( length == 0 ) return (0); + return rtcp_write ( bp,str, length ); +} + |