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| 1 /* crypto/bio/bss_fd.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include <errno.h> | |
| 61 #define USE_SOCKETS | |
| 62 #include "cryptlib.h" | |
| 63 | |
| 64 #if defined(OPENSSL_NO_POSIX_IO) | |
| 65 /* | |
| 66 * One can argue that one should implement dummy placeholder for | |
| 67 * BIO_s_fd here... | |
| 68 */ | |
| 69 #else | |
| 70 /* | |
| 71 * As for unconditional usage of "UPLINK" interface in this module. | |
| 72 * Trouble is that unlike Unix file descriptors [which are indexes | |
| 73 * in kernel-side per-process table], corresponding descriptors on | |
| 74 * platforms which require "UPLINK" interface seem to be indexes | |
| 75 * in a user-land, non-global table. Well, in fact they are indexes | |
| 76 * in stdio _iob[], and recall that _iob[] was the very reason why | |
| 77 * "UPLINK" interface was introduced in first place. But one way on | |
| 78 * another. Neither libcrypto or libssl use this BIO meaning that | |
| 79 * file descriptors can only be provided by application. Therefore | |
| 80 * "UPLINK" calls are due... | |
| 81 */ | |
| 82 #include "bio_lcl.h" | |
| 83 | |
| 84 static int fd_write(BIO *h, const char *buf, int num); | |
| 85 static int fd_read(BIO *h, char *buf, int size); | |
| 86 static int fd_puts(BIO *h, const char *str); | |
| 87 static int fd_gets(BIO *h, char *buf, int size); | |
| 88 static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
| 89 static int fd_new(BIO *h); | |
| 90 static int fd_free(BIO *data); | |
| 91 int BIO_fd_should_retry(int s); | |
| 92 | |
| 93 static BIO_METHOD methods_fdp= | |
| 94 { | |
| 95 BIO_TYPE_FD,"file descriptor", | |
| 96 fd_write, | |
| 97 fd_read, | |
| 98 fd_puts, | |
| 99 fd_gets, | |
| 100 fd_ctrl, | |
| 101 fd_new, | |
| 102 fd_free, | |
| 103 NULL, | |
| 104 }; | |
| 105 | |
| 106 BIO_METHOD *BIO_s_fd(void) | |
| 107 { | |
| 108 return(&methods_fdp); | |
| 109 } | |
| 110 | |
| 111 BIO *BIO_new_fd(int fd,int close_flag) | |
| 112 { | |
| 113 BIO *ret; | |
| 114 ret=BIO_new(BIO_s_fd()); | |
| 115 if (ret == NULL) return(NULL); | |
| 116 BIO_set_fd(ret,fd,close_flag); | |
| 117 return(ret); | |
| 118 } | |
| 119 | |
| 120 static int fd_new(BIO *bi) | |
| 121 { | |
| 122 bi->init=0; | |
| 123 bi->num=-1; | |
| 124 bi->ptr=NULL; | |
| 125 bi->flags=BIO_FLAGS_UPLINK; /* essentially redundant */ | |
| 126 return(1); | |
| 127 } | |
| 128 | |
| 129 static int fd_free(BIO *a) | |
| 130 { | |
| 131 if (a == NULL) return(0); | |
| 132 if (a->shutdown) | |
| 133 { | |
| 134 if (a->init) | |
| 135 { | |
| 136 UP_close(a->num); | |
| 137 } | |
| 138 a->init=0; | |
| 139 a->flags=BIO_FLAGS_UPLINK; | |
| 140 } | |
| 141 return(1); | |
| 142 } | |
| 143 | |
| 144 static int fd_read(BIO *b, char *out,int outl) | |
| 145 { | |
| 146 int ret=0; | |
| 147 | |
| 148 if (out != NULL) | |
| 149 { | |
| 150 clear_sys_error(); | |
| 151 ret=UP_read(b->num,out,outl); | |
| 152 BIO_clear_retry_flags(b); | |
| 153 if (ret <= 0) | |
| 154 { | |
| 155 if (BIO_fd_should_retry(ret)) | |
| 156 BIO_set_retry_read(b); | |
| 157 } | |
| 158 } | |
| 159 return(ret); | |
| 160 } | |
| 161 | |
| 162 static int fd_write(BIO *b, const char *in, int inl) | |
| 163 { | |
| 164 int ret; | |
| 165 clear_sys_error(); | |
| 166 ret=UP_write(b->num,in,inl); | |
| 167 BIO_clear_retry_flags(b); | |
| 168 if (ret <= 0) | |
| 169 { | |
| 170 if (BIO_fd_should_retry(ret)) | |
| 171 BIO_set_retry_write(b); | |
| 172 } | |
| 173 return(ret); | |
| 174 } | |
| 175 | |
| 176 static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) | |
| 177 { | |
| 178 long ret=1; | |
| 179 int *ip; | |
| 180 | |
| 181 switch (cmd) | |
| 182 { | |
| 183 case BIO_CTRL_RESET: | |
| 184 num=0; | |
| 185 case BIO_C_FILE_SEEK: | |
| 186 ret=(long)UP_lseek(b->num,num,0); | |
| 187 break; | |
| 188 case BIO_C_FILE_TELL: | |
| 189 case BIO_CTRL_INFO: | |
| 190 ret=(long)UP_lseek(b->num,0,1); | |
| 191 break; | |
| 192 case BIO_C_SET_FD: | |
| 193 fd_free(b); | |
| 194 b->num= *((int *)ptr); | |
| 195 b->shutdown=(int)num; | |
| 196 b->init=1; | |
| 197 break; | |
| 198 case BIO_C_GET_FD: | |
| 199 if (b->init) | |
| 200 { | |
| 201 ip=(int *)ptr; | |
| 202 if (ip != NULL) *ip=b->num; | |
| 203 ret=b->num; | |
| 204 } | |
| 205 else | |
| 206 ret= -1; | |
| 207 break; | |
| 208 case BIO_CTRL_GET_CLOSE: | |
| 209 ret=b->shutdown; | |
| 210 break; | |
| 211 case BIO_CTRL_SET_CLOSE: | |
| 212 b->shutdown=(int)num; | |
| 213 break; | |
| 214 case BIO_CTRL_PENDING: | |
| 215 case BIO_CTRL_WPENDING: | |
| 216 ret=0; | |
| 217 break; | |
| 218 case BIO_CTRL_DUP: | |
| 219 case BIO_CTRL_FLUSH: | |
| 220 ret=1; | |
| 221 break; | |
| 222 default: | |
| 223 ret=0; | |
| 224 break; | |
| 225 } | |
| 226 return(ret); | |
| 227 } | |
| 228 | |
| 229 static int fd_puts(BIO *bp, const char *str) | |
| 230 { | |
| 231 int n,ret; | |
| 232 | |
| 233 n=strlen(str); | |
| 234 ret=fd_write(bp,str,n); | |
| 235 return(ret); | |
| 236 } | |
| 237 | |
| 238 static int fd_gets(BIO *bp, char *buf, int size) | |
| 239 { | |
| 240 int ret=0; | |
| 241 char *ptr=buf; | |
| 242 char *end=buf+size-1; | |
| 243 | |
| 244 while ( (ptr < end) && (fd_read(bp, ptr, 1) > 0) && (ptr[0] != '\n') ) | |
| 245 ptr++; | |
| 246 | |
| 247 ptr[0]='\0'; | |
| 248 | |
| 249 if (buf[0] != '\0') | |
| 250 ret=strlen(buf); | |
| 251 return(ret); | |
| 252 } | |
| 253 | |
| 254 int BIO_fd_should_retry(int i) | |
| 255 { | |
| 256 int err; | |
| 257 | |
| 258 if ((i == 0) || (i == -1)) | |
| 259 { | |
| 260 err=get_last_sys_error(); | |
| 261 | |
| 262 #if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not?
Ben 4/1/99 */ | |
| 263 if ((i == -1) && (err == 0)) | |
| 264 return(1); | |
| 265 #endif | |
| 266 | |
| 267 return(BIO_fd_non_fatal_error(err)); | |
| 268 } | |
| 269 return(0); | |
| 270 } | |
| 271 | |
| 272 int BIO_fd_non_fatal_error(int err) | |
| 273 { | |
| 274 switch (err) | |
| 275 { | |
| 276 | |
| 277 #ifdef EWOULDBLOCK | |
| 278 # ifdef WSAEWOULDBLOCK | |
| 279 # if WSAEWOULDBLOCK != EWOULDBLOCK | |
| 280 case EWOULDBLOCK: | |
| 281 # endif | |
| 282 # else | |
| 283 case EWOULDBLOCK: | |
| 284 # endif | |
| 285 #endif | |
| 286 | |
| 287 #if defined(ENOTCONN) | |
| 288 case ENOTCONN: | |
| 289 #endif | |
| 290 | |
| 291 #ifdef EINTR | |
| 292 case EINTR: | |
| 293 #endif | |
| 294 | |
| 295 #ifdef EAGAIN | |
| 296 #if EWOULDBLOCK != EAGAIN | |
| 297 case EAGAIN: | |
| 298 # endif | |
| 299 #endif | |
| 300 | |
| 301 #ifdef EPROTO | |
| 302 case EPROTO: | |
| 303 #endif | |
| 304 | |
| 305 #ifdef EINPROGRESS | |
| 306 case EINPROGRESS: | |
| 307 #endif | |
| 308 | |
| 309 #ifdef EALREADY | |
| 310 case EALREADY: | |
| 311 #endif | |
| 312 return(1); | |
| 313 /* break; */ | |
| 314 default: | |
| 315 break; | |
| 316 } | |
| 317 return(0); | |
| 318 } | |
| 319 #endif | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master