1*0Sstevel@tonic-gate /* crypto/bio/bss_fd.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <stdio.h> 60*0Sstevel@tonic-gate #include <errno.h> 61*0Sstevel@tonic-gate #define USE_SOCKETS 62*0Sstevel@tonic-gate #include "cryptlib.h" 63*0Sstevel@tonic-gate #include <openssl/bio.h> 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate static int fd_write(BIO *h, const char *buf, int num); 66*0Sstevel@tonic-gate static int fd_read(BIO *h, char *buf, int size); 67*0Sstevel@tonic-gate static int fd_puts(BIO *h, const char *str); 68*0Sstevel@tonic-gate static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2); 69*0Sstevel@tonic-gate static int fd_new(BIO *h); 70*0Sstevel@tonic-gate static int fd_free(BIO *data); 71*0Sstevel@tonic-gate int BIO_fd_should_retry(int s); 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate static BIO_METHOD methods_fdp= 74*0Sstevel@tonic-gate { 75*0Sstevel@tonic-gate BIO_TYPE_FD,"file descriptor", 76*0Sstevel@tonic-gate fd_write, 77*0Sstevel@tonic-gate fd_read, 78*0Sstevel@tonic-gate fd_puts, 79*0Sstevel@tonic-gate NULL, /* fd_gets, */ 80*0Sstevel@tonic-gate fd_ctrl, 81*0Sstevel@tonic-gate fd_new, 82*0Sstevel@tonic-gate fd_free, 83*0Sstevel@tonic-gate NULL, 84*0Sstevel@tonic-gate }; 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate BIO_METHOD *BIO_s_fd(void) 87*0Sstevel@tonic-gate { 88*0Sstevel@tonic-gate return(&methods_fdp); 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate BIO *BIO_new_fd(int fd,int close_flag) 92*0Sstevel@tonic-gate { 93*0Sstevel@tonic-gate BIO *ret; 94*0Sstevel@tonic-gate ret=BIO_new(BIO_s_fd()); 95*0Sstevel@tonic-gate if (ret == NULL) return(NULL); 96*0Sstevel@tonic-gate BIO_set_fd(ret,fd,close_flag); 97*0Sstevel@tonic-gate return(ret); 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate static int fd_new(BIO *bi) 101*0Sstevel@tonic-gate { 102*0Sstevel@tonic-gate bi->init=0; 103*0Sstevel@tonic-gate bi->num=0; 104*0Sstevel@tonic-gate bi->ptr=NULL; 105*0Sstevel@tonic-gate bi->flags=0; 106*0Sstevel@tonic-gate return(1); 107*0Sstevel@tonic-gate } 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate static int fd_free(BIO *a) 110*0Sstevel@tonic-gate { 111*0Sstevel@tonic-gate if (a == NULL) return(0); 112*0Sstevel@tonic-gate if (a->shutdown) 113*0Sstevel@tonic-gate { 114*0Sstevel@tonic-gate if (a->init) 115*0Sstevel@tonic-gate { 116*0Sstevel@tonic-gate close(a->num); 117*0Sstevel@tonic-gate } 118*0Sstevel@tonic-gate a->init=0; 119*0Sstevel@tonic-gate a->flags=0; 120*0Sstevel@tonic-gate } 121*0Sstevel@tonic-gate return(1); 122*0Sstevel@tonic-gate } 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate static int fd_read(BIO *b, char *out,int outl) 125*0Sstevel@tonic-gate { 126*0Sstevel@tonic-gate int ret=0; 127*0Sstevel@tonic-gate 128*0Sstevel@tonic-gate if (out != NULL) 129*0Sstevel@tonic-gate { 130*0Sstevel@tonic-gate clear_sys_error(); 131*0Sstevel@tonic-gate ret=read(b->num,out,outl); 132*0Sstevel@tonic-gate BIO_clear_retry_flags(b); 133*0Sstevel@tonic-gate if (ret <= 0) 134*0Sstevel@tonic-gate { 135*0Sstevel@tonic-gate if (BIO_fd_should_retry(ret)) 136*0Sstevel@tonic-gate BIO_set_retry_read(b); 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate return(ret); 140*0Sstevel@tonic-gate } 141*0Sstevel@tonic-gate 142*0Sstevel@tonic-gate static int fd_write(BIO *b, const char *in, int inl) 143*0Sstevel@tonic-gate { 144*0Sstevel@tonic-gate int ret; 145*0Sstevel@tonic-gate clear_sys_error(); 146*0Sstevel@tonic-gate ret=write(b->num,in,inl); 147*0Sstevel@tonic-gate BIO_clear_retry_flags(b); 148*0Sstevel@tonic-gate if (ret <= 0) 149*0Sstevel@tonic-gate { 150*0Sstevel@tonic-gate if (BIO_fd_should_retry(ret)) 151*0Sstevel@tonic-gate BIO_set_retry_write(b); 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate return(ret); 154*0Sstevel@tonic-gate } 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) 157*0Sstevel@tonic-gate { 158*0Sstevel@tonic-gate long ret=1; 159*0Sstevel@tonic-gate int *ip; 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate switch (cmd) 162*0Sstevel@tonic-gate { 163*0Sstevel@tonic-gate case BIO_CTRL_RESET: 164*0Sstevel@tonic-gate num=0; 165*0Sstevel@tonic-gate case BIO_C_FILE_SEEK: 166*0Sstevel@tonic-gate ret=(long)lseek(b->num,num,0); 167*0Sstevel@tonic-gate break; 168*0Sstevel@tonic-gate case BIO_C_FILE_TELL: 169*0Sstevel@tonic-gate case BIO_CTRL_INFO: 170*0Sstevel@tonic-gate ret=(long)lseek(b->num,0,1); 171*0Sstevel@tonic-gate break; 172*0Sstevel@tonic-gate case BIO_C_SET_FD: 173*0Sstevel@tonic-gate fd_free(b); 174*0Sstevel@tonic-gate b->num= *((int *)ptr); 175*0Sstevel@tonic-gate b->shutdown=(int)num; 176*0Sstevel@tonic-gate b->init=1; 177*0Sstevel@tonic-gate break; 178*0Sstevel@tonic-gate case BIO_C_GET_FD: 179*0Sstevel@tonic-gate if (b->init) 180*0Sstevel@tonic-gate { 181*0Sstevel@tonic-gate ip=(int *)ptr; 182*0Sstevel@tonic-gate if (ip != NULL) *ip=b->num; 183*0Sstevel@tonic-gate ret=b->num; 184*0Sstevel@tonic-gate } 185*0Sstevel@tonic-gate else 186*0Sstevel@tonic-gate ret= -1; 187*0Sstevel@tonic-gate break; 188*0Sstevel@tonic-gate case BIO_CTRL_GET_CLOSE: 189*0Sstevel@tonic-gate ret=b->shutdown; 190*0Sstevel@tonic-gate break; 191*0Sstevel@tonic-gate case BIO_CTRL_SET_CLOSE: 192*0Sstevel@tonic-gate b->shutdown=(int)num; 193*0Sstevel@tonic-gate break; 194*0Sstevel@tonic-gate case BIO_CTRL_PENDING: 195*0Sstevel@tonic-gate case BIO_CTRL_WPENDING: 196*0Sstevel@tonic-gate ret=0; 197*0Sstevel@tonic-gate break; 198*0Sstevel@tonic-gate case BIO_CTRL_DUP: 199*0Sstevel@tonic-gate case BIO_CTRL_FLUSH: 200*0Sstevel@tonic-gate ret=1; 201*0Sstevel@tonic-gate break; 202*0Sstevel@tonic-gate default: 203*0Sstevel@tonic-gate ret=0; 204*0Sstevel@tonic-gate break; 205*0Sstevel@tonic-gate } 206*0Sstevel@tonic-gate return(ret); 207*0Sstevel@tonic-gate } 208*0Sstevel@tonic-gate 209*0Sstevel@tonic-gate static int fd_puts(BIO *bp, const char *str) 210*0Sstevel@tonic-gate { 211*0Sstevel@tonic-gate int n,ret; 212*0Sstevel@tonic-gate 213*0Sstevel@tonic-gate n=strlen(str); 214*0Sstevel@tonic-gate ret=fd_write(bp,str,n); 215*0Sstevel@tonic-gate return(ret); 216*0Sstevel@tonic-gate } 217*0Sstevel@tonic-gate 218*0Sstevel@tonic-gate int BIO_fd_should_retry(int i) 219*0Sstevel@tonic-gate { 220*0Sstevel@tonic-gate int err; 221*0Sstevel@tonic-gate 222*0Sstevel@tonic-gate if ((i == 0) || (i == -1)) 223*0Sstevel@tonic-gate { 224*0Sstevel@tonic-gate err=get_last_sys_error(); 225*0Sstevel@tonic-gate 226*0Sstevel@tonic-gate #if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */ 227*0Sstevel@tonic-gate if ((i == -1) && (err == 0)) 228*0Sstevel@tonic-gate return(1); 229*0Sstevel@tonic-gate #endif 230*0Sstevel@tonic-gate 231*0Sstevel@tonic-gate return(BIO_fd_non_fatal_error(err)); 232*0Sstevel@tonic-gate } 233*0Sstevel@tonic-gate return(0); 234*0Sstevel@tonic-gate } 235*0Sstevel@tonic-gate 236*0Sstevel@tonic-gate int BIO_fd_non_fatal_error(int err) 237*0Sstevel@tonic-gate { 238*0Sstevel@tonic-gate switch (err) 239*0Sstevel@tonic-gate { 240*0Sstevel@tonic-gate 241*0Sstevel@tonic-gate #ifdef EWOULDBLOCK 242*0Sstevel@tonic-gate # ifdef WSAEWOULDBLOCK 243*0Sstevel@tonic-gate # if WSAEWOULDBLOCK != EWOULDBLOCK 244*0Sstevel@tonic-gate case EWOULDBLOCK: 245*0Sstevel@tonic-gate # endif 246*0Sstevel@tonic-gate # else 247*0Sstevel@tonic-gate case EWOULDBLOCK: 248*0Sstevel@tonic-gate # endif 249*0Sstevel@tonic-gate #endif 250*0Sstevel@tonic-gate 251*0Sstevel@tonic-gate #if defined(ENOTCONN) 252*0Sstevel@tonic-gate case ENOTCONN: 253*0Sstevel@tonic-gate #endif 254*0Sstevel@tonic-gate 255*0Sstevel@tonic-gate #ifdef EINTR 256*0Sstevel@tonic-gate case EINTR: 257*0Sstevel@tonic-gate #endif 258*0Sstevel@tonic-gate 259*0Sstevel@tonic-gate #ifdef EAGAIN 260*0Sstevel@tonic-gate #if EWOULDBLOCK != EAGAIN 261*0Sstevel@tonic-gate case EAGAIN: 262*0Sstevel@tonic-gate # endif 263*0Sstevel@tonic-gate #endif 264*0Sstevel@tonic-gate 265*0Sstevel@tonic-gate #ifdef EPROTO 266*0Sstevel@tonic-gate case EPROTO: 267*0Sstevel@tonic-gate #endif 268*0Sstevel@tonic-gate 269*0Sstevel@tonic-gate #ifdef EINPROGRESS 270*0Sstevel@tonic-gate case EINPROGRESS: 271*0Sstevel@tonic-gate #endif 272*0Sstevel@tonic-gate 273*0Sstevel@tonic-gate #ifdef EALREADY 274*0Sstevel@tonic-gate case EALREADY: 275*0Sstevel@tonic-gate #endif 276*0Sstevel@tonic-gate return(1); 277*0Sstevel@tonic-gate /* break; */ 278*0Sstevel@tonic-gate default: 279*0Sstevel@tonic-gate break; 280*0Sstevel@tonic-gate } 281*0Sstevel@tonic-gate return(0); 282*0Sstevel@tonic-gate } 283