diff options
Diffstat (limited to 'openssl/crypto/bio/bss_rtcp.c')
| -rw-r--r-- | openssl/crypto/bio/bss_rtcp.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/openssl/crypto/bio/bss_rtcp.c b/openssl/crypto/bio/bss_rtcp.c new file mode 100644 index 0000000..5c98a82 --- /dev/null +++ b/openssl/crypto/bio/bss_rtcp.c @@ -0,0 +1,321 @@ +/* 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$_ definitions */ +#include <starlet.h> + +typedef unsigned short io_channel; +/*************************************************************************/ +struct io_status { + short status, count; + long flags; +}; + +/* Should have member alignment inhibited */ +struct rpc_msg { + /* 'A'-app data. 'R'-remote client 'G'-global */ + char channel; + /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */ + char function; + /* Amount of data returned or max to return */ + unsigned short int length; + /* variable data */ + char data[4092]; +}; +#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092) + +struct rpc_ctx { + int filled, pos; + struct rpc_msg msg; +}; + +static int rtcp_write(BIO *h, const char *buf, int num); +static int rtcp_read(BIO *h, char *buf, int size); +static int rtcp_puts(BIO *h, const char *str); +static int rtcp_gets(BIO *h, char *str, int size); +static long rtcp_ctrl(BIO *h, int cmd, long arg1, void *arg2); +static int rtcp_new(BIO *h); +static int rtcp_free(BIO *data); + +static BIO_METHOD rtcp_method = { + BIO_TYPE_FD, + "RTCP", + rtcp_write, + rtcp_read, + rtcp_puts, + rtcp_gets, + rtcp_ctrl, + rtcp_new, + rtcp_free, + NULL, +}; + +BIO_METHOD *BIO_s_rtcp(void) +{ + return (&rtcp_method); +} + +/*****************************************************************************/ +/* + * Decnet I/O routines. + */ + +#ifdef __DECC +# pragma message save +# pragma message disable DOLLARID +#endif + +static int get(io_channel chan, char *buffer, int maxlen, int *length) +{ + int status; + struct io_status iosb; + status = sys$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)); + if (bi->ptr == NULL) + return (0); + 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); +} |