155714Skris/* crypto/bio/bss_rtcp.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8296341Sdelphij * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15296341Sdelphij * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22296341Sdelphij * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37296341Sdelphij * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40296341Sdelphij * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52296341Sdelphij * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 59296341Sdelphij/*- 60296341Sdelphij * Written by David L. Jones <jonesd@kcgl1.eng.ohio-state.edu> 6155714Skris * Date: 22-JUL-1996 62296341Sdelphij * Revised: 25-SEP-1997 Update for 0.8.1, BIO_CTRL_SET -> BIO_C_SET_FD 6355714Skris */ 6455714Skris/* VMS */ 6555714Skris#include <stdio.h> 6655714Skris#include <stdlib.h> 6755714Skris#include <string.h> 6855714Skris#include <errno.h> 6955714Skris#include "cryptlib.h" 7055714Skris#include <openssl/bio.h> 7155714Skris 72296341Sdelphij#include <iodef.h> /* VMS IO$_ definitions */ 7355714Skris#include <starlet.h> 7455714Skris 7555714Skristypedef unsigned short io_channel; 7655714Skris/*************************************************************************/ 77296341Sdelphijstruct io_status { 78296341Sdelphij short status, count; 79296341Sdelphij long flags; 80296341Sdelphij}; 8155714Skris 82296341Sdelphij/* Should have member alignment inhibited */ 83296341Sdelphijstruct rpc_msg { 84296341Sdelphij /* 'A'-app data. 'R'-remote client 'G'-global */ 85296341Sdelphij char channel; 86296341Sdelphij /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */ 87296341Sdelphij char function; 88296341Sdelphij /* Amount of data returned or max to return */ 89296341Sdelphij unsigned short int length; 90296341Sdelphij /* variable data */ 91296341Sdelphij char data[4092]; 9255714Skris}; 9355714Skris#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092) 9455714Skris 9555714Skrisstruct rpc_ctx { 9655714Skris int filled, pos; 9755714Skris struct rpc_msg msg; 9855714Skris}; 9955714Skris 100296341Sdelphijstatic int rtcp_write(BIO *h, const char *buf, int num); 101296341Sdelphijstatic int rtcp_read(BIO *h, char *buf, int size); 102296341Sdelphijstatic int rtcp_puts(BIO *h, const char *str); 103296341Sdelphijstatic int rtcp_gets(BIO *h, char *str, int size); 104296341Sdelphijstatic long rtcp_ctrl(BIO *h, int cmd, long arg1, void *arg2); 10555714Skrisstatic int rtcp_new(BIO *h); 10655714Skrisstatic int rtcp_free(BIO *data); 10755714Skris 108296341Sdelphijstatic BIO_METHOD rtcp_method = { 109296341Sdelphij BIO_TYPE_FD, 110296341Sdelphij "RTCP", 111296341Sdelphij rtcp_write, 112296341Sdelphij rtcp_read, 113296341Sdelphij rtcp_puts, 114296341Sdelphij rtcp_gets, 115296341Sdelphij rtcp_ctrl, 116296341Sdelphij rtcp_new, 117296341Sdelphij rtcp_free, 118296341Sdelphij NULL, 119296341Sdelphij}; 12055714Skris 12155714SkrisBIO_METHOD *BIO_s_rtcp(void) 122296341Sdelphij{ 123296341Sdelphij return (&rtcp_method); 124296341Sdelphij} 125296341Sdelphij 12655714Skris/*****************************************************************************/ 127296341Sdelphij/* 128296341Sdelphij * Decnet I/O routines. 12955714Skris */ 13055714Skris 13155714Skris#ifdef __DECC 132296341Sdelphij# pragma message save 133296341Sdelphij# pragma message disable DOLLARID 13455714Skris#endif 13555714Skris 136296341Sdelphijstatic int get(io_channel chan, char *buffer, int maxlen, int *length) 13755714Skris{ 13855714Skris int status; 13955714Skris struct io_status iosb; 140296341Sdelphij status = sys$qiow(0, chan, IO$_READVBLK, &iosb, 0, 0, 141296341Sdelphij buffer, maxlen, 0, 0, 0, 0); 142296341Sdelphij if ((status & 1) == 1) 143296341Sdelphij status = iosb.status; 144296341Sdelphij if ((status & 1) == 1) 145296341Sdelphij *length = iosb.count; 14655714Skris return status; 14755714Skris} 14855714Skris 149296341Sdelphijstatic int put(io_channel chan, char *buffer, int length) 15055714Skris{ 15155714Skris int status; 15255714Skris struct io_status iosb; 153296341Sdelphij status = sys$qiow(0, chan, IO$_WRITEVBLK, &iosb, 0, 0, 154296341Sdelphij buffer, length, 0, 0, 0, 0); 155296341Sdelphij if ((status & 1) == 1) 156296341Sdelphij status = iosb.status; 15755714Skris return status; 15855714Skris} 15955714Skris 16055714Skris#ifdef __DECC 161296341Sdelphij# pragma message restore 16255714Skris#endif 16355714Skris 16455714Skris/***************************************************************************/ 16555714Skris 16655714Skrisstatic int rtcp_new(BIO *bi) 16755714Skris{ 16855714Skris struct rpc_ctx *ctx; 169296341Sdelphij bi->init = 1; 170296341Sdelphij bi->num = 0; 171296341Sdelphij bi->flags = 0; 172296341Sdelphij bi->ptr = OPENSSL_malloc(sizeof(struct rpc_ctx)); 173296341Sdelphij ctx = (struct rpc_ctx *)bi->ptr; 174296341Sdelphij ctx->filled = 0; 175296341Sdelphij ctx->pos = 0; 176296341Sdelphij return (1); 17755714Skris} 17855714Skris 17955714Skrisstatic int rtcp_free(BIO *a) 18055714Skris{ 181296341Sdelphij if (a == NULL) 182296341Sdelphij return (0); 183296341Sdelphij if (a->ptr) 184296341Sdelphij OPENSSL_free(a->ptr); 185296341Sdelphij a->ptr = NULL; 186296341Sdelphij return (1); 18755714Skris} 188296341Sdelphij 18955714Skrisstatic int rtcp_read(BIO *b, char *out, int outl) 19055714Skris{ 19155714Skris int status, length; 19255714Skris struct rpc_ctx *ctx; 19355714Skris /* 19455714Skris * read data, return existing. 19555714Skris */ 196296341Sdelphij ctx = (struct rpc_ctx *)b->ptr; 197296341Sdelphij if (ctx->pos < ctx->filled) { 198296341Sdelphij length = ctx->filled - ctx->pos; 199296341Sdelphij if (length > outl) 200296341Sdelphij length = outl; 201296341Sdelphij memmove(out, &ctx->msg.data[ctx->pos], length); 202296341Sdelphij ctx->pos += length; 203296341Sdelphij return length; 20455714Skris } 20555714Skris /* 20655714Skris * Requst more data from R channel. 20755714Skris */ 20855714Skris ctx->msg.channel = 'R'; 20955714Skris ctx->msg.function = 'G'; 21055714Skris ctx->msg.length = sizeof(ctx->msg.data); 211296341Sdelphij status = put(b->num, (char *)&ctx->msg, RPC_HDR_SIZE); 212296341Sdelphij if ((status & 1) == 0) { 213296341Sdelphij return -1; 21455714Skris } 21555714Skris /* 21655714Skris * Read. 21755714Skris */ 21855714Skris ctx->pos = ctx->filled = 0; 219296341Sdelphij status = get(b->num, (char *)&ctx->msg, sizeof(ctx->msg), &length); 220296341Sdelphij if ((status & 1) == 0) 221296341Sdelphij length = -1; 222296341Sdelphij if (ctx->msg.channel != 'R' || ctx->msg.function != 'C') { 223296341Sdelphij length = -1; 22455714Skris } 22555714Skris ctx->filled = length - RPC_HDR_SIZE; 226296341Sdelphij 227296341Sdelphij if (ctx->pos < ctx->filled) { 228296341Sdelphij length = ctx->filled - ctx->pos; 229296341Sdelphij if (length > outl) 230296341Sdelphij length = outl; 231296341Sdelphij memmove(out, ctx->msg.data, length); 232296341Sdelphij ctx->pos += length; 233296341Sdelphij return length; 23455714Skris } 23555714Skris 23655714Skris return length; 23755714Skris} 23855714Skris 23968651Skrisstatic int rtcp_write(BIO *b, const char *in, int inl) 24055714Skris{ 24155714Skris int status, i, segment, length; 24255714Skris struct rpc_ctx *ctx; 24355714Skris /* 24455714Skris * Output data, send in chunks no larger that sizeof(ctx->msg.data). 24555714Skris */ 246296341Sdelphij ctx = (struct rpc_ctx *)b->ptr; 247296341Sdelphij for (i = 0; i < inl; i += segment) { 248296341Sdelphij segment = inl - i; 249296341Sdelphij if (segment > sizeof(ctx->msg.data)) 250296341Sdelphij segment = sizeof(ctx->msg.data); 251296341Sdelphij ctx->msg.channel = 'R'; 252296341Sdelphij ctx->msg.function = 'P'; 253296341Sdelphij ctx->msg.length = segment; 254296341Sdelphij memmove(ctx->msg.data, &in[i], segment); 255296341Sdelphij status = put(b->num, (char *)&ctx->msg, segment + RPC_HDR_SIZE); 256296341Sdelphij if ((status & 1) == 0) { 257296341Sdelphij i = -1; 258296341Sdelphij break; 259296341Sdelphij } 26055714Skris 261296341Sdelphij status = get(b->num, (char *)&ctx->msg, sizeof(ctx->msg), &length); 262296341Sdelphij if (((status & 1) == 0) || (length < RPC_HDR_SIZE)) { 263296341Sdelphij i = -1; 264296341Sdelphij break; 265296341Sdelphij } 266296341Sdelphij if ((ctx->msg.channel != 'R') || (ctx->msg.function != 'C')) { 267296341Sdelphij printf("unexpected response when confirming put %c %c\n", 268296341Sdelphij ctx->msg.channel, ctx->msg.function); 26955714Skris 270296341Sdelphij } 27155714Skris } 272296341Sdelphij return (i); 27355714Skris} 27455714Skris 27568651Skrisstatic long rtcp_ctrl(BIO *b, int cmd, long num, void *ptr) 276296341Sdelphij{ 277296341Sdelphij long ret = 1; 27855714Skris 279296341Sdelphij switch (cmd) { 280296341Sdelphij case BIO_CTRL_RESET: 281296341Sdelphij case BIO_CTRL_EOF: 282296341Sdelphij ret = 1; 283296341Sdelphij break; 284296341Sdelphij case BIO_C_SET_FD: 285296341Sdelphij b->num = num; 286296341Sdelphij ret = 1; 287296341Sdelphij break; 288296341Sdelphij case BIO_CTRL_SET_CLOSE: 289296341Sdelphij case BIO_CTRL_FLUSH: 290296341Sdelphij case BIO_CTRL_DUP: 291296341Sdelphij ret = 1; 292296341Sdelphij break; 293296341Sdelphij case BIO_CTRL_GET_CLOSE: 294296341Sdelphij case BIO_CTRL_INFO: 295296341Sdelphij case BIO_CTRL_GET: 296296341Sdelphij case BIO_CTRL_PENDING: 297296341Sdelphij case BIO_CTRL_WPENDING: 298296341Sdelphij default: 299296341Sdelphij ret = 0; 300296341Sdelphij break; 301296341Sdelphij } 302296341Sdelphij return (ret); 303296341Sdelphij} 30455714Skris 30555714Skrisstatic int rtcp_gets(BIO *bp, char *buf, int size) 306296341Sdelphij{ 307296341Sdelphij return (0); 308296341Sdelphij} 30955714Skris 31068651Skrisstatic int rtcp_puts(BIO *bp, const char *str) 31155714Skris{ 31255714Skris int length; 313296341Sdelphij if (str == NULL) 314296341Sdelphij return (0); 315296341Sdelphij length = strlen(str); 316296341Sdelphij if (length == 0) 317296341Sdelphij return (0); 318296341Sdelphij return rtcp_write(bp, str, length); 31955714Skris} 320