| File: | src/lib/libssl/d1_both.c |
| Warning: | line 957, column 2 Null pointer passed as 1st argument to memory copy function |
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| 1 | /* $OpenBSD: d1_both.c,v 1.80 2021/10/23 13:36:03 jsing Exp $ */ | |||
| 2 | /* | |||
| 3 | * DTLS implementation written by Nagendra Modadugu | |||
| 4 | * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. | |||
| 5 | */ | |||
| 6 | /* ==================================================================== | |||
| 7 | * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. | |||
| 8 | * | |||
| 9 | * Redistribution and use in source and binary forms, with or without | |||
| 10 | * modification, are permitted provided that the following conditions | |||
| 11 | * are met: | |||
| 12 | * | |||
| 13 | * 1. Redistributions of source code must retain the above copyright | |||
| 14 | * notice, this list of conditions and the following disclaimer. | |||
| 15 | * | |||
| 16 | * 2. Redistributions in binary form must reproduce the above copyright | |||
| 17 | * notice, this list of conditions and the following disclaimer in | |||
| 18 | * the documentation and/or other materials provided with the | |||
| 19 | * distribution. | |||
| 20 | * | |||
| 21 | * 3. All advertising materials mentioning features or use of this | |||
| 22 | * software must display the following acknowledgment: | |||
| 23 | * "This product includes software developed by the OpenSSL Project | |||
| 24 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |||
| 25 | * | |||
| 26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |||
| 27 | * endorse or promote products derived from this software without | |||
| 28 | * prior written permission. For written permission, please contact | |||
| 29 | * openssl-core@openssl.org. | |||
| 30 | * | |||
| 31 | * 5. Products derived from this software may not be called "OpenSSL" | |||
| 32 | * nor may "OpenSSL" appear in their names without prior written | |||
| 33 | * permission of the OpenSSL Project. | |||
| 34 | * | |||
| 35 | * 6. Redistributions of any form whatsoever must retain the following | |||
| 36 | * acknowledgment: | |||
| 37 | * "This product includes software developed by the OpenSSL Project | |||
| 38 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |||
| 39 | * | |||
| 40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |||
| 41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |||
| 43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |||
| 44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |||
| 45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |||
| 46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |||
| 47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
| 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |||
| 49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |||
| 50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |||
| 51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |||
| 52 | * ==================================================================== | |||
| 53 | * | |||
| 54 | * This product includes cryptographic software written by Eric Young | |||
| 55 | * (eay@cryptsoft.com). This product includes software written by Tim | |||
| 56 | * Hudson (tjh@cryptsoft.com). | |||
| 57 | * | |||
| 58 | */ | |||
| 59 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |||
| 60 | * All rights reserved. | |||
| 61 | * | |||
| 62 | * This package is an SSL implementation written | |||
| 63 | * by Eric Young (eay@cryptsoft.com). | |||
| 64 | * The implementation was written so as to conform with Netscapes SSL. | |||
| 65 | * | |||
| 66 | * This library is free for commercial and non-commercial use as long as | |||
| 67 | * the following conditions are aheared to. The following conditions | |||
| 68 | * apply to all code found in this distribution, be it the RC4, RSA, | |||
| 69 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |||
| 70 | * included with this distribution is covered by the same copyright terms | |||
| 71 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |||
| 72 | * | |||
| 73 | * Copyright remains Eric Young's, and as such any Copyright notices in | |||
| 74 | * the code are not to be removed. | |||
| 75 | * If this package is used in a product, Eric Young should be given attribution | |||
| 76 | * as the author of the parts of the library used. | |||
| 77 | * This can be in the form of a textual message at program startup or | |||
| 78 | * in documentation (online or textual) provided with the package. | |||
| 79 | * | |||
| 80 | * Redistribution and use in source and binary forms, with or without | |||
| 81 | * modification, are permitted provided that the following conditions | |||
| 82 | * are met: | |||
| 83 | * 1. Redistributions of source code must retain the copyright | |||
| 84 | * notice, this list of conditions and the following disclaimer. | |||
| 85 | * 2. Redistributions in binary form must reproduce the above copyright | |||
| 86 | * notice, this list of conditions and the following disclaimer in the | |||
| 87 | * documentation and/or other materials provided with the distribution. | |||
| 88 | * 3. All advertising materials mentioning features or use of this software | |||
| 89 | * must display the following acknowledgement: | |||
| 90 | * "This product includes cryptographic software written by | |||
| 91 | * Eric Young (eay@cryptsoft.com)" | |||
| 92 | * The word 'cryptographic' can be left out if the rouines from the library | |||
| 93 | * being used are not cryptographic related :-). | |||
| 94 | * 4. If you include any Windows specific code (or a derivative thereof) from | |||
| 95 | * the apps directory (application code) you must include an acknowledgement: | |||
| 96 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |||
| 97 | * | |||
| 98 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |||
| 99 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
| 100 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
| 101 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||
| 102 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||
| 103 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||
| 104 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
| 105 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||
| 106 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||
| 107 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||
| 108 | * SUCH DAMAGE. | |||
| 109 | * | |||
| 110 | * The licence and distribution terms for any publically available version or | |||
| 111 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |||
| 112 | * copied and put under another distribution licence | |||
| 113 | * [including the GNU Public Licence.] | |||
| 114 | */ | |||
| 115 | ||||
| 116 | #include <limits.h> | |||
| 117 | #include <stdio.h> | |||
| 118 | #include <string.h> | |||
| 119 | ||||
| 120 | #include <openssl/buffer.h> | |||
| 121 | #include <openssl/evp.h> | |||
| 122 | #include <openssl/objects.h> | |||
| 123 | #include <openssl/x509.h> | |||
| 124 | ||||
| 125 | #include "bytestring.h" | |||
| 126 | #include "dtls_locl.h" | |||
| 127 | #include "pqueue.h" | |||
| 128 | #include "ssl_locl.h" | |||
| 129 | ||||
| 130 | #define RSMBLY_BITMASK_SIZE(msg_len)(((msg_len) + 7) / 8) (((msg_len) + 7) / 8) | |||
| 131 | ||||
| 132 | #define RSMBLY_BITMASK_MARK(bitmask, start, end){ if ((end) - (start) <= 8) { long ii; for (ii = (start); ii < (end); ii++) bitmask[((ii) >> 3)] |= (1 << ( (ii) & 7)); } else { long ii; bitmask[((start) >> 3 )] |= bitmask_start_values[((start) & 7)]; for (ii = (((start ) >> 3) + 1); ii < ((((end) - 1)) >> 3); ii++) bitmask[ii] = 0xff; bitmask[(((end) - 1) >> 3)] |= bitmask_end_values [((end) & 7)]; } } { \ | |||
| 133 | if ((end) - (start) <= 8) { \ | |||
| 134 | long ii; \ | |||
| 135 | for (ii = (start); ii < (end); ii++) bitmask[((ii) >> 3)] |= (1 << ((ii) & 7)); \ | |||
| 136 | } else { \ | |||
| 137 | long ii; \ | |||
| 138 | bitmask[((start) >> 3)] |= bitmask_start_values[((start) & 7)]; \ | |||
| 139 | for (ii = (((start) >> 3) + 1); ii < ((((end) - 1)) >> 3); ii++) bitmask[ii] = 0xff; \ | |||
| 140 | bitmask[(((end) - 1) >> 3)] |= bitmask_end_values[((end) & 7)]; \ | |||
| 141 | } } | |||
| 142 | ||||
| 143 | #define RSMBLY_BITMASK_IS_COMPLETE(bitmask, msg_len, is_complete){ long ii; (void)(((msg_len) > 0) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 143, "(msg_len) > 0"),1)); is_complete = 1; if (bitmask[ (((msg_len) - 1) >> 3)] != bitmask_end_values[((msg_len ) & 7)]) is_complete = 0; if (is_complete) for (ii = (((msg_len ) - 1) >> 3) - 1; ii >= 0 ; ii--) if (bitmask[ii] != 0xff) { is_complete = 0; break; } } { \ | |||
| 144 | long ii; \ | |||
| 145 | OPENSSL_assert((msg_len) > 0)(void)(((msg_len) > 0) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 145, "(msg_len) > 0"),1)); \ | |||
| 146 | is_complete = 1; \ | |||
| 147 | if (bitmask[(((msg_len) - 1) >> 3)] != bitmask_end_values[((msg_len) & 7)]) is_complete = 0; \ | |||
| 148 | if (is_complete) for (ii = (((msg_len) - 1) >> 3) - 1; ii >= 0 ; ii--) \ | |||
| 149 | if (bitmask[ii] != 0xff) { is_complete = 0; break; } } | |||
| 150 | ||||
| 151 | static const unsigned char bitmask_start_values[] = { | |||
| 152 | 0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80 | |||
| 153 | }; | |||
| 154 | static const unsigned char bitmask_end_values[] = { | |||
| 155 | 0xff, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f | |||
| 156 | }; | |||
| 157 | ||||
| 158 | /* XDTLS: figure out the right values */ | |||
| 159 | static const unsigned int g_probable_mtu[] = {1500 - 28, 512 - 28, 256 - 28}; | |||
| 160 | ||||
| 161 | static unsigned int dtls1_guess_mtu(unsigned int curr_mtu); | |||
| 162 | static void dtls1_fix_message_header(SSL *s, unsigned long frag_off, | |||
| 163 | unsigned long frag_len); | |||
| 164 | static int dtls1_write_message_header(const struct hm_header_st *msg_hdr, | |||
| 165 | unsigned long frag_off, unsigned long frag_len, unsigned char *p); | |||
| 166 | static long dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, | |||
| 167 | int *ok); | |||
| 168 | ||||
| 169 | void dtls1_hm_fragment_free(hm_fragment *frag); | |||
| 170 | ||||
| 171 | static hm_fragment * | |||
| 172 | dtls1_hm_fragment_new(unsigned long frag_len, int reassembly) | |||
| 173 | { | |||
| 174 | hm_fragment *frag; | |||
| 175 | ||||
| 176 | if ((frag = calloc(1, sizeof(*frag))) == NULL((void*)0)) | |||
| 177 | goto err; | |||
| 178 | ||||
| 179 | if (frag_len > 0) { | |||
| 180 | if ((frag->fragment = calloc(1, frag_len)) == NULL((void*)0)) | |||
| 181 | goto err; | |||
| 182 | } | |||
| 183 | ||||
| 184 | /* Initialize reassembly bitmask if necessary. */ | |||
| 185 | if (reassembly
| |||
| 186 | if ((frag->reassembly = calloc(1, | |||
| 187 | RSMBLY_BITMASK_SIZE(frag_len)(((frag_len) + 7) / 8))) == NULL((void*)0)) | |||
| 188 | goto err; | |||
| 189 | } | |||
| 190 | ||||
| 191 | return frag; | |||
| 192 | ||||
| 193 | err: | |||
| 194 | dtls1_hm_fragment_free(frag); | |||
| 195 | return NULL((void*)0); | |||
| 196 | } | |||
| 197 | ||||
| 198 | void | |||
| 199 | dtls1_hm_fragment_free(hm_fragment *frag) | |||
| 200 | { | |||
| 201 | if (frag == NULL((void*)0)) | |||
| 202 | return; | |||
| 203 | ||||
| 204 | free(frag->fragment); | |||
| 205 | free(frag->reassembly); | |||
| 206 | free(frag); | |||
| 207 | } | |||
| 208 | ||||
| 209 | /* send s->internal->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */ | |||
| 210 | int | |||
| 211 | dtls1_do_write(SSL *s, int type) | |||
| 212 | { | |||
| 213 | int ret; | |||
| 214 | int curr_mtu; | |||
| 215 | unsigned int len, frag_off; | |||
| 216 | size_t overhead; | |||
| 217 | ||||
| 218 | /* AHA! Figure out the MTU, and stick to the right size */ | |||
| 219 | if (s->d1->mtu < dtls1_min_mtu() && | |||
| 220 | !(SSL_get_options(s)SSL_ctrl((s),32,0,((void*)0)) & SSL_OP_NO_QUERY_MTU0x00001000L)) { | |||
| 221 | s->d1->mtu = BIO_ctrl(SSL_get_wbio(s), | |||
| 222 | BIO_CTRL_DGRAM_QUERY_MTU40, 0, NULL((void*)0)); | |||
| 223 | ||||
| 224 | /* | |||
| 225 | * I've seen the kernel return bogus numbers when it | |||
| 226 | * doesn't know the MTU (ie., the initial write), so just | |||
| 227 | * make sure we have a reasonable number | |||
| 228 | */ | |||
| 229 | if (s->d1->mtu < dtls1_min_mtu()) { | |||
| 230 | s->d1->mtu = 0; | |||
| 231 | s->d1->mtu = dtls1_guess_mtu(s->d1->mtu); | |||
| 232 | BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SET_MTU42, | |||
| 233 | s->d1->mtu, NULL((void*)0)); | |||
| 234 | } | |||
| 235 | } | |||
| 236 | ||||
| 237 | OPENSSL_assert(s->d1->mtu >= dtls1_min_mtu())(void)((s->d1->mtu >= dtls1_min_mtu()) ? 0 : (OpenSSLDie ("/usr/src/lib/libssl/d1_both.c", 237, "s->d1->mtu >= dtls1_min_mtu()" ),1)); | |||
| 238 | /* should have something reasonable now */ | |||
| 239 | ||||
| 240 | if (s->internal->init_off == 0 && type == SSL3_RT_HANDSHAKE22) | |||
| 241 | OPENSSL_assert(s->internal->init_num ==(void)((s->internal->init_num == (int)s->d1->w_msg_hdr .msg_len + 12) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 242, "s->internal->init_num == (int)s->d1->w_msg_hdr.msg_len + DTLS1_HM_HEADER_LENGTH" ),1)) | |||
| 242 | (int)s->d1->w_msg_hdr.msg_len + DTLS1_HM_HEADER_LENGTH)(void)((s->internal->init_num == (int)s->d1->w_msg_hdr .msg_len + 12) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 242, "s->internal->init_num == (int)s->d1->w_msg_hdr.msg_len + DTLS1_HM_HEADER_LENGTH" ),1)); | |||
| 243 | ||||
| 244 | if (!tls12_record_layer_write_overhead(s->internal->rl, &overhead)) | |||
| 245 | return -1; | |||
| 246 | ||||
| 247 | frag_off = 0; | |||
| 248 | while (s->internal->init_num) { | |||
| 249 | curr_mtu = s->d1->mtu - BIO_wpending(SSL_get_wbio(s))(int)BIO_ctrl(SSL_get_wbio(s),13,0,((void*)0)) - | |||
| 250 | DTLS1_RT_HEADER_LENGTH13 - overhead; | |||
| 251 | ||||
| 252 | if (curr_mtu <= DTLS1_HM_HEADER_LENGTH12) { | |||
| 253 | /* grr.. we could get an error if MTU picked was wrong */ | |||
| 254 | ret = BIO_flush(SSL_get_wbio(s))(int)BIO_ctrl(SSL_get_wbio(s),11,0,((void*)0)); | |||
| 255 | if (ret <= 0) | |||
| 256 | return ret; | |||
| 257 | curr_mtu = s->d1->mtu - DTLS1_RT_HEADER_LENGTH13 - | |||
| 258 | overhead; | |||
| 259 | } | |||
| 260 | ||||
| 261 | if (s->internal->init_num > curr_mtu) | |||
| 262 | len = curr_mtu; | |||
| 263 | else | |||
| 264 | len = s->internal->init_num; | |||
| 265 | ||||
| 266 | /* XDTLS: this function is too long. split out the CCS part */ | |||
| 267 | if (type == SSL3_RT_HANDSHAKE22) { | |||
| 268 | if (s->internal->init_off != 0) { | |||
| 269 | OPENSSL_assert(s->internal->init_off > DTLS1_HM_HEADER_LENGTH)(void)((s->internal->init_off > 12) ? 0 : (OpenSSLDie ("/usr/src/lib/libssl/d1_both.c", 269, "s->internal->init_off > DTLS1_HM_HEADER_LENGTH" ),1)); | |||
| 270 | s->internal->init_off -= DTLS1_HM_HEADER_LENGTH12; | |||
| 271 | s->internal->init_num += DTLS1_HM_HEADER_LENGTH12; | |||
| 272 | ||||
| 273 | if (s->internal->init_num > curr_mtu) | |||
| 274 | len = curr_mtu; | |||
| 275 | else | |||
| 276 | len = s->internal->init_num; | |||
| 277 | } | |||
| 278 | ||||
| 279 | dtls1_fix_message_header(s, frag_off, | |||
| 280 | len - DTLS1_HM_HEADER_LENGTH12); | |||
| 281 | ||||
| 282 | if (!dtls1_write_message_header(&s->d1->w_msg_hdr, | |||
| 283 | s->d1->w_msg_hdr.frag_off, s->d1->w_msg_hdr.frag_len, | |||
| 284 | (unsigned char *)&s->internal->init_buf->data[s->internal->init_off])) | |||
| 285 | return -1; | |||
| 286 | ||||
| 287 | OPENSSL_assert(len >= DTLS1_HM_HEADER_LENGTH)(void)((len >= 12) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 287, "len >= DTLS1_HM_HEADER_LENGTH"),1)); | |||
| 288 | } | |||
| 289 | ||||
| 290 | ret = dtls1_write_bytes(s, type, | |||
| 291 | &s->internal->init_buf->data[s->internal->init_off], len); | |||
| 292 | if (ret < 0) { | |||
| 293 | /* | |||
| 294 | * Might need to update MTU here, but we don't know | |||
| 295 | * which previous packet caused the failure -- so | |||
| 296 | * can't really retransmit anything. continue as | |||
| 297 | * if everything is fine and wait for an alert to | |||
| 298 | * handle the retransmit | |||
| 299 | */ | |||
| 300 | if (BIO_ctrl(SSL_get_wbio(s), | |||
| 301 | BIO_CTRL_DGRAM_MTU_EXCEEDED43, 0, NULL((void*)0)) > 0) | |||
| 302 | s->d1->mtu = BIO_ctrl(SSL_get_wbio(s), | |||
| 303 | BIO_CTRL_DGRAM_QUERY_MTU40, 0, NULL((void*)0)); | |||
| 304 | else | |||
| 305 | return (-1); | |||
| 306 | } else { | |||
| 307 | ||||
| 308 | /* | |||
| 309 | * Bad if this assert fails, only part of the | |||
| 310 | * handshake message got sent. but why would | |||
| 311 | * this happen? | |||
| 312 | */ | |||
| 313 | OPENSSL_assert(len == (unsigned int)ret)(void)((len == (unsigned int)ret) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 313, "len == (unsigned int)ret"),1)); | |||
| 314 | ||||
| 315 | if (type == SSL3_RT_HANDSHAKE22 && | |||
| 316 | !s->d1->retransmitting) { | |||
| 317 | /* | |||
| 318 | * Should not be done for 'Hello Request's, | |||
| 319 | * but in that case we'll ignore the result | |||
| 320 | * anyway | |||
| 321 | */ | |||
| 322 | unsigned char *p = (unsigned char *)&s->internal->init_buf->data[s->internal->init_off]; | |||
| 323 | const struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr; | |||
| 324 | int xlen; | |||
| 325 | ||||
| 326 | if (frag_off == 0) { | |||
| 327 | /* | |||
| 328 | * Reconstruct message header is if it | |||
| 329 | * is being sent in single fragment | |||
| 330 | */ | |||
| 331 | if (!dtls1_write_message_header(msg_hdr, | |||
| 332 | 0, msg_hdr->msg_len, p)) | |||
| 333 | return (-1); | |||
| 334 | xlen = ret; | |||
| 335 | } else { | |||
| 336 | p += DTLS1_HM_HEADER_LENGTH12; | |||
| 337 | xlen = ret - DTLS1_HM_HEADER_LENGTH12; | |||
| 338 | } | |||
| 339 | ||||
| 340 | tls1_transcript_record(s, p, xlen); | |||
| 341 | } | |||
| 342 | ||||
| 343 | if (ret == s->internal->init_num) { | |||
| 344 | if (s->internal->msg_callback) | |||
| 345 | s->internal->msg_callback(1, s->version, type, | |||
| 346 | s->internal->init_buf->data, | |||
| 347 | (size_t)(s->internal->init_off + s->internal->init_num), | |||
| 348 | s, s->internal->msg_callback_arg); | |||
| 349 | ||||
| 350 | s->internal->init_off = 0; | |||
| 351 | /* done writing this message */ | |||
| 352 | s->internal->init_num = 0; | |||
| 353 | ||||
| 354 | return (1); | |||
| 355 | } | |||
| 356 | s->internal->init_off += ret; | |||
| 357 | s->internal->init_num -= ret; | |||
| 358 | frag_off += (ret -= DTLS1_HM_HEADER_LENGTH12); | |||
| 359 | } | |||
| 360 | } | |||
| 361 | return (0); | |||
| 362 | } | |||
| 363 | ||||
| 364 | ||||
| 365 | /* | |||
| 366 | * Obtain handshake message of message type 'mt' (any if mt == -1), | |||
| 367 | * maximum acceptable body length 'max'. | |||
| 368 | * Read an entire handshake message. Handshake messages arrive in | |||
| 369 | * fragments. | |||
| 370 | */ | |||
| 371 | int | |||
| 372 | dtls1_get_message(SSL *s, int st1, int stn, int mt, long max) | |||
| 373 | { | |||
| 374 | struct hm_header_st *msg_hdr; | |||
| 375 | unsigned char *p; | |||
| 376 | unsigned long msg_len; | |||
| 377 | int i, al, ok; | |||
| 378 | ||||
| 379 | /* | |||
| 380 | * s3->internal->tmp is used to store messages that are unexpected, caused | |||
| 381 | * by the absence of an optional handshake message | |||
| 382 | */ | |||
| 383 | if (S3I(s)(s->s3->internal)->hs.tls12.reuse_message) { | |||
| 384 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 0; | |||
| 385 | if ((mt >= 0) && (S3I(s)(s->s3->internal)->hs.tls12.message_type != mt)) { | |||
| 386 | al = SSL_AD_UNEXPECTED_MESSAGE10; | |||
| 387 | SSLerror(s, SSL_R_UNEXPECTED_MESSAGE)SSL_error_internal(s, 244, "/usr/src/lib/libssl/d1_both.c", 387 ); | |||
| 388 | goto fatal_err; | |||
| 389 | } | |||
| 390 | s->internal->init_msg = s->internal->init_buf->data + DTLS1_HM_HEADER_LENGTH12; | |||
| 391 | s->internal->init_num = (int)S3I(s)(s->s3->internal)->hs.tls12.message_size; | |||
| 392 | return 1; | |||
| 393 | } | |||
| 394 | ||||
| 395 | msg_hdr = &s->d1->r_msg_hdr; | |||
| 396 | memset(msg_hdr, 0, sizeof(struct hm_header_st)); | |||
| 397 | ||||
| 398 | again: | |||
| 399 | i = dtls1_get_message_fragment(s, st1, stn, max, &ok); | |||
| 400 | if (i == DTLS1_HM_BAD_FRAGMENT-2 || | |||
| 401 | i == DTLS1_HM_FRAGMENT_RETRY-3) /* bad fragment received */ | |||
| 402 | goto again; | |||
| 403 | else if (i <= 0 && !ok) | |||
| 404 | return i; | |||
| 405 | ||||
| 406 | p = (unsigned char *)s->internal->init_buf->data; | |||
| 407 | msg_len = msg_hdr->msg_len; | |||
| 408 | ||||
| 409 | /* reconstruct message header */ | |||
| 410 | if (!dtls1_write_message_header(msg_hdr, 0, msg_len, p)) | |||
| 411 | return -1; | |||
| 412 | ||||
| 413 | msg_len += DTLS1_HM_HEADER_LENGTH12; | |||
| 414 | ||||
| 415 | tls1_transcript_record(s, p, msg_len); | |||
| 416 | if (s->internal->msg_callback) | |||
| 417 | s->internal->msg_callback(0, s->version, SSL3_RT_HANDSHAKE22, p, msg_len, | |||
| 418 | s, s->internal->msg_callback_arg); | |||
| 419 | ||||
| 420 | memset(msg_hdr, 0, sizeof(struct hm_header_st)); | |||
| 421 | ||||
| 422 | /* Don't change sequence numbers while listening */ | |||
| 423 | if (!s->d1->listen) | |||
| 424 | s->d1->handshake_read_seq++; | |||
| 425 | ||||
| 426 | s->internal->init_msg = s->internal->init_buf->data + DTLS1_HM_HEADER_LENGTH12; | |||
| 427 | return 1; | |||
| 428 | ||||
| 429 | fatal_err: | |||
| 430 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); | |||
| 431 | return -1; | |||
| 432 | } | |||
| 433 | ||||
| 434 | static int | |||
| 435 | dtls1_preprocess_fragment(SSL *s, struct hm_header_st *msg_hdr, int max) | |||
| 436 | { | |||
| 437 | size_t frag_off, frag_len, msg_len; | |||
| 438 | ||||
| 439 | msg_len = msg_hdr->msg_len; | |||
| 440 | frag_off = msg_hdr->frag_off; | |||
| 441 | frag_len = msg_hdr->frag_len; | |||
| 442 | ||||
| 443 | /* sanity checking */ | |||
| 444 | if ((frag_off + frag_len) > msg_len) { | |||
| 445 | SSLerror(s, SSL_R_EXCESSIVE_MESSAGE_SIZE)SSL_error_internal(s, 152, "/usr/src/lib/libssl/d1_both.c", 445 ); | |||
| 446 | return SSL_AD_ILLEGAL_PARAMETER47; | |||
| 447 | } | |||
| 448 | ||||
| 449 | if ((frag_off + frag_len) > (unsigned long)max) { | |||
| 450 | SSLerror(s, SSL_R_EXCESSIVE_MESSAGE_SIZE)SSL_error_internal(s, 152, "/usr/src/lib/libssl/d1_both.c", 450 ); | |||
| 451 | return SSL_AD_ILLEGAL_PARAMETER47; | |||
| 452 | } | |||
| 453 | ||||
| 454 | if ( s->d1->r_msg_hdr.frag_off == 0) /* first fragment */ | |||
| 455 | { | |||
| 456 | /* | |||
| 457 | * msg_len is limited to 2^24, but is effectively checked | |||
| 458 | * against max above | |||
| 459 | */ | |||
| 460 | if (!BUF_MEM_grow_clean(s->internal->init_buf, | |||
| 461 | msg_len + DTLS1_HM_HEADER_LENGTH12)) { | |||
| 462 | SSLerror(s, ERR_R_BUF_LIB)SSL_error_internal(s, 7, "/usr/src/lib/libssl/d1_both.c", 462 ); | |||
| 463 | return SSL_AD_INTERNAL_ERROR80; | |||
| 464 | } | |||
| 465 | ||||
| 466 | S3I(s)(s->s3->internal)->hs.tls12.message_size = msg_len; | |||
| 467 | s->d1->r_msg_hdr.msg_len = msg_len; | |||
| 468 | S3I(s)(s->s3->internal)->hs.tls12.message_type = msg_hdr->type; | |||
| 469 | s->d1->r_msg_hdr.type = msg_hdr->type; | |||
| 470 | s->d1->r_msg_hdr.seq = msg_hdr->seq; | |||
| 471 | } else if (msg_len != s->d1->r_msg_hdr.msg_len) { | |||
| 472 | /* | |||
| 473 | * They must be playing with us! BTW, failure to enforce | |||
| 474 | * upper limit would open possibility for buffer overrun. | |||
| 475 | */ | |||
| 476 | SSLerror(s, SSL_R_EXCESSIVE_MESSAGE_SIZE)SSL_error_internal(s, 152, "/usr/src/lib/libssl/d1_both.c", 476 ); | |||
| 477 | return SSL_AD_ILLEGAL_PARAMETER47; | |||
| 478 | } | |||
| 479 | ||||
| 480 | return 0; /* no error */ | |||
| 481 | } | |||
| 482 | ||||
| 483 | static int | |||
| 484 | dtls1_retrieve_buffered_fragment(SSL *s, long max, int *ok) | |||
| 485 | { | |||
| 486 | /* | |||
| 487 | * (0) check whether the desired fragment is available | |||
| 488 | * if so: | |||
| 489 | * (1) copy over the fragment to s->internal->init_buf->data[] | |||
| 490 | * (2) update s->internal->init_num | |||
| 491 | */ | |||
| 492 | pitem *item; | |||
| 493 | hm_fragment *frag; | |||
| 494 | int al; | |||
| 495 | ||||
| 496 | *ok = 0; | |||
| 497 | item = pqueue_peek(s->d1->buffered_messages); | |||
| 498 | if (item == NULL((void*)0)) | |||
| 499 | return 0; | |||
| 500 | ||||
| 501 | frag = (hm_fragment *)item->data; | |||
| 502 | ||||
| 503 | /* Don't return if reassembly still in progress */ | |||
| 504 | if (frag->reassembly != NULL((void*)0)) | |||
| 505 | return 0; | |||
| 506 | ||||
| 507 | if (s->d1->handshake_read_seq == frag->msg_header.seq) { | |||
| 508 | unsigned long frag_len = frag->msg_header.frag_len; | |||
| 509 | pqueue_pop(s->d1->buffered_messages); | |||
| 510 | ||||
| 511 | al = dtls1_preprocess_fragment(s, &frag->msg_header, max); | |||
| 512 | ||||
| 513 | if (al == 0) /* no alert */ | |||
| 514 | { | |||
| 515 | unsigned char *p = (unsigned char *)s->internal->init_buf->data + DTLS1_HM_HEADER_LENGTH12; | |||
| 516 | memcpy(&p[frag->msg_header.frag_off], | |||
| 517 | frag->fragment, frag->msg_header.frag_len); | |||
| 518 | } | |||
| 519 | ||||
| 520 | dtls1_hm_fragment_free(frag); | |||
| 521 | pitem_free(item); | |||
| 522 | ||||
| 523 | if (al == 0) { | |||
| 524 | *ok = 1; | |||
| 525 | return frag_len; | |||
| 526 | } | |||
| 527 | ||||
| 528 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); | |||
| 529 | s->internal->init_num = 0; | |||
| 530 | *ok = 0; | |||
| 531 | return -1; | |||
| 532 | } else | |||
| 533 | return 0; | |||
| 534 | } | |||
| 535 | ||||
| 536 | /* | |||
| 537 | * dtls1_max_handshake_message_len returns the maximum number of bytes | |||
| 538 | * permitted in a DTLS handshake message for |s|. The minimum is 16KB, | |||
| 539 | * but may be greater if the maximum certificate list size requires it. | |||
| 540 | */ | |||
| 541 | static unsigned long | |||
| 542 | dtls1_max_handshake_message_len(const SSL *s) | |||
| 543 | { | |||
| 544 | unsigned long max_len; | |||
| 545 | ||||
| 546 | max_len = DTLS1_HM_HEADER_LENGTH12 + SSL3_RT_MAX_ENCRYPTED_LENGTH((256 + 64)+16384); | |||
| 547 | if (max_len < (unsigned long)s->internal->max_cert_list) | |||
| 548 | return s->internal->max_cert_list; | |||
| 549 | return max_len; | |||
| 550 | } | |||
| 551 | ||||
| 552 | static int | |||
| 553 | dtls1_reassemble_fragment(SSL *s, struct hm_header_st* msg_hdr, int *ok) | |||
| 554 | { | |||
| 555 | hm_fragment *frag = NULL((void*)0); | |||
| 556 | pitem *item = NULL((void*)0); | |||
| 557 | int i = -1, is_complete; | |||
| 558 | unsigned char seq64be[8]; | |||
| 559 | unsigned long frag_len = msg_hdr->frag_len; | |||
| 560 | ||||
| 561 | if ((msg_hdr->frag_off + frag_len) > msg_hdr->msg_len || | |||
| 562 | msg_hdr->msg_len > dtls1_max_handshake_message_len(s)) | |||
| 563 | goto err; | |||
| 564 | ||||
| 565 | if (frag_len == 0) { | |||
| 566 | i = DTLS1_HM_FRAGMENT_RETRY-3; | |||
| 567 | goto err; | |||
| 568 | } | |||
| 569 | ||||
| 570 | /* Try to find item in queue */ | |||
| 571 | memset(seq64be, 0, sizeof(seq64be)); | |||
| 572 | seq64be[6] = (unsigned char)(msg_hdr->seq >> 8); | |||
| 573 | seq64be[7] = (unsigned char)msg_hdr->seq; | |||
| 574 | item = pqueue_find(s->d1->buffered_messages, seq64be); | |||
| 575 | ||||
| 576 | if (item == NULL((void*)0)) { | |||
| 577 | frag = dtls1_hm_fragment_new(msg_hdr->msg_len, 1); | |||
| 578 | if (frag == NULL((void*)0)) | |||
| 579 | goto err; | |||
| 580 | memcpy(&(frag->msg_header), msg_hdr, sizeof(*msg_hdr)); | |||
| 581 | frag->msg_header.frag_len = frag->msg_header.msg_len; | |||
| 582 | frag->msg_header.frag_off = 0; | |||
| 583 | } else { | |||
| 584 | frag = (hm_fragment*)item->data; | |||
| 585 | if (frag->msg_header.msg_len != msg_hdr->msg_len) { | |||
| 586 | item = NULL((void*)0); | |||
| 587 | frag = NULL((void*)0); | |||
| 588 | goto err; | |||
| 589 | } | |||
| 590 | } | |||
| 591 | ||||
| 592 | /* | |||
| 593 | * If message is already reassembled, this must be a | |||
| 594 | * retransmit and can be dropped. | |||
| 595 | */ | |||
| 596 | if (frag->reassembly == NULL((void*)0)) { | |||
| 597 | unsigned char devnull [256]; | |||
| 598 | ||||
| 599 | while (frag_len) { | |||
| 600 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE22, | |||
| 601 | devnull, frag_len > sizeof(devnull) ? | |||
| 602 | sizeof(devnull) : frag_len, 0); | |||
| 603 | if (i <= 0) | |||
| 604 | goto err; | |||
| 605 | frag_len -= i; | |||
| 606 | } | |||
| 607 | i = DTLS1_HM_FRAGMENT_RETRY-3; | |||
| 608 | goto err; | |||
| 609 | } | |||
| 610 | ||||
| 611 | /* read the body of the fragment (header has already been read */ | |||
| 612 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE22, | |||
| 613 | frag->fragment + msg_hdr->frag_off, frag_len, 0); | |||
| 614 | if (i <= 0 || (unsigned long)i != frag_len) | |||
| 615 | goto err; | |||
| 616 | ||||
| 617 | RSMBLY_BITMASK_MARK(frag->reassembly, (long)msg_hdr->frag_off,{ if (((long)(msg_hdr->frag_off + frag_len)) - ((long)msg_hdr ->frag_off) <= 8) { long ii; for (ii = ((long)msg_hdr-> frag_off); ii < ((long)(msg_hdr->frag_off + frag_len)); ii++) frag->reassembly[((ii) >> 3)] |= (1 << ( (ii) & 7)); } else { long ii; frag->reassembly[(((long )msg_hdr->frag_off) >> 3)] |= bitmask_start_values[( ((long)msg_hdr->frag_off) & 7)]; for (ii = ((((long)msg_hdr ->frag_off) >> 3) + 1); ii < (((((long)(msg_hdr-> frag_off + frag_len)) - 1)) >> 3); ii++) frag->reassembly [ii] = 0xff; frag->reassembly[((((long)(msg_hdr->frag_off + frag_len)) - 1) >> 3)] |= bitmask_end_values[(((long )(msg_hdr->frag_off + frag_len)) & 7)]; } } | |||
| 618 | (long)(msg_hdr->frag_off + frag_len)){ if (((long)(msg_hdr->frag_off + frag_len)) - ((long)msg_hdr ->frag_off) <= 8) { long ii; for (ii = ((long)msg_hdr-> frag_off); ii < ((long)(msg_hdr->frag_off + frag_len)); ii++) frag->reassembly[((ii) >> 3)] |= (1 << ( (ii) & 7)); } else { long ii; frag->reassembly[(((long )msg_hdr->frag_off) >> 3)] |= bitmask_start_values[( ((long)msg_hdr->frag_off) & 7)]; for (ii = ((((long)msg_hdr ->frag_off) >> 3) + 1); ii < (((((long)(msg_hdr-> frag_off + frag_len)) - 1)) >> 3); ii++) frag->reassembly [ii] = 0xff; frag->reassembly[((((long)(msg_hdr->frag_off + frag_len)) - 1) >> 3)] |= bitmask_end_values[(((long )(msg_hdr->frag_off + frag_len)) & 7)]; } }; | |||
| 619 | ||||
| 620 | RSMBLY_BITMASK_IS_COMPLETE(frag->reassembly, (long)msg_hdr->msg_len,{ long ii; (void)((((long)msg_hdr->msg_len) > 0) ? 0 : ( OpenSSLDie("/usr/src/lib/libssl/d1_both.c", 621, "((long)msg_hdr->msg_len) > 0" ),1)); is_complete = 1; if (frag->reassembly[((((long)msg_hdr ->msg_len) - 1) >> 3)] != bitmask_end_values[(((long )msg_hdr->msg_len) & 7)]) is_complete = 0; if (is_complete ) for (ii = ((((long)msg_hdr->msg_len) - 1) >> 3) - 1 ; ii >= 0 ; ii--) if (frag->reassembly[ii] != 0xff) { is_complete = 0; break; } } | |||
| 621 | is_complete){ long ii; (void)((((long)msg_hdr->msg_len) > 0) ? 0 : ( OpenSSLDie("/usr/src/lib/libssl/d1_both.c", 621, "((long)msg_hdr->msg_len) > 0" ),1)); is_complete = 1; if (frag->reassembly[((((long)msg_hdr ->msg_len) - 1) >> 3)] != bitmask_end_values[(((long )msg_hdr->msg_len) & 7)]) is_complete = 0; if (is_complete ) for (ii = ((((long)msg_hdr->msg_len) - 1) >> 3) - 1 ; ii >= 0 ; ii--) if (frag->reassembly[ii] != 0xff) { is_complete = 0; break; } }; | |||
| 622 | ||||
| 623 | if (is_complete) { | |||
| 624 | free(frag->reassembly); | |||
| 625 | frag->reassembly = NULL((void*)0); | |||
| 626 | } | |||
| 627 | ||||
| 628 | if (item == NULL((void*)0)) { | |||
| 629 | memset(seq64be, 0, sizeof(seq64be)); | |||
| 630 | seq64be[6] = (unsigned char)(msg_hdr->seq >> 8); | |||
| 631 | seq64be[7] = (unsigned char)(msg_hdr->seq); | |||
| 632 | ||||
| 633 | item = pitem_new(seq64be, frag); | |||
| 634 | if (item == NULL((void*)0)) { | |||
| 635 | i = -1; | |||
| 636 | goto err; | |||
| 637 | } | |||
| 638 | ||||
| 639 | pqueue_insert(s->d1->buffered_messages, item); | |||
| 640 | } | |||
| 641 | ||||
| 642 | return DTLS1_HM_FRAGMENT_RETRY-3; | |||
| 643 | ||||
| 644 | err: | |||
| 645 | if (item == NULL((void*)0) && frag != NULL((void*)0)) | |||
| 646 | dtls1_hm_fragment_free(frag); | |||
| 647 | *ok = 0; | |||
| 648 | return i; | |||
| 649 | } | |||
| 650 | ||||
| 651 | ||||
| 652 | static int | |||
| 653 | dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok) | |||
| 654 | { | |||
| 655 | int i = -1; | |||
| 656 | hm_fragment *frag = NULL((void*)0); | |||
| 657 | pitem *item = NULL((void*)0); | |||
| 658 | unsigned char seq64be[8]; | |||
| 659 | unsigned long frag_len = msg_hdr->frag_len; | |||
| 660 | ||||
| 661 | if ((msg_hdr->frag_off + frag_len) > msg_hdr->msg_len) | |||
| 662 | goto err; | |||
| 663 | ||||
| 664 | /* Try to find item in queue, to prevent duplicate entries */ | |||
| 665 | memset(seq64be, 0, sizeof(seq64be)); | |||
| 666 | seq64be[6] = (unsigned char) (msg_hdr->seq >> 8); | |||
| 667 | seq64be[7] = (unsigned char) msg_hdr->seq; | |||
| 668 | item = pqueue_find(s->d1->buffered_messages, seq64be); | |||
| 669 | ||||
| 670 | /* | |||
| 671 | * If we already have an entry and this one is a fragment, | |||
| 672 | * don't discard it and rather try to reassemble it. | |||
| 673 | */ | |||
| 674 | if (item != NULL((void*)0) && frag_len < msg_hdr->msg_len) | |||
| 675 | item = NULL((void*)0); | |||
| 676 | ||||
| 677 | /* | |||
| 678 | * Discard the message if sequence number was already there, is | |||
| 679 | * too far in the future, already in the queue or if we received | |||
| 680 | * a FINISHED before the SERVER_HELLO, which then must be a stale | |||
| 681 | * retransmit. | |||
| 682 | */ | |||
| 683 | if (msg_hdr->seq <= s->d1->handshake_read_seq || | |||
| 684 | msg_hdr->seq > s->d1->handshake_read_seq + 10 || item != NULL((void*)0) || | |||
| 685 | (s->d1->handshake_read_seq == 0 && | |||
| 686 | msg_hdr->type == SSL3_MT_FINISHED20)) { | |||
| 687 | unsigned char devnull [256]; | |||
| 688 | ||||
| 689 | while (frag_len) { | |||
| 690 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE22, | |||
| 691 | devnull, frag_len > sizeof(devnull) ? | |||
| 692 | sizeof(devnull) : frag_len, 0); | |||
| 693 | if (i <= 0) | |||
| 694 | goto err; | |||
| 695 | frag_len -= i; | |||
| 696 | } | |||
| 697 | } else { | |||
| 698 | if (frag_len < msg_hdr->msg_len) | |||
| 699 | return dtls1_reassemble_fragment(s, msg_hdr, ok); | |||
| 700 | ||||
| 701 | if (frag_len > dtls1_max_handshake_message_len(s)) | |||
| 702 | goto err; | |||
| 703 | ||||
| 704 | frag = dtls1_hm_fragment_new(frag_len, 0); | |||
| 705 | if (frag == NULL((void*)0)) | |||
| 706 | goto err; | |||
| 707 | ||||
| 708 | memcpy(&(frag->msg_header), msg_hdr, sizeof(*msg_hdr)); | |||
| 709 | ||||
| 710 | if (frag_len) { | |||
| 711 | /* read the body of the fragment (header has already been read */ | |||
| 712 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE22, | |||
| 713 | frag->fragment, frag_len, 0); | |||
| 714 | if (i <= 0 || (unsigned long)i != frag_len) | |||
| 715 | goto err; | |||
| 716 | } | |||
| 717 | ||||
| 718 | memset(seq64be, 0, sizeof(seq64be)); | |||
| 719 | seq64be[6] = (unsigned char)(msg_hdr->seq >> 8); | |||
| 720 | seq64be[7] = (unsigned char)(msg_hdr->seq); | |||
| 721 | ||||
| 722 | item = pitem_new(seq64be, frag); | |||
| 723 | if (item == NULL((void*)0)) | |||
| 724 | goto err; | |||
| 725 | ||||
| 726 | pqueue_insert(s->d1->buffered_messages, item); | |||
| 727 | } | |||
| 728 | ||||
| 729 | return DTLS1_HM_FRAGMENT_RETRY-3; | |||
| 730 | ||||
| 731 | err: | |||
| 732 | if (item == NULL((void*)0) && frag != NULL((void*)0)) | |||
| 733 | dtls1_hm_fragment_free(frag); | |||
| 734 | *ok = 0; | |||
| 735 | return i; | |||
| 736 | } | |||
| 737 | ||||
| 738 | ||||
| 739 | static long | |||
| 740 | dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok) | |||
| 741 | { | |||
| 742 | unsigned char wire[DTLS1_HM_HEADER_LENGTH12]; | |||
| 743 | unsigned long len, frag_off, frag_len; | |||
| 744 | struct hm_header_st msg_hdr; | |||
| 745 | int i, al; | |||
| 746 | CBS cbs; | |||
| 747 | ||||
| 748 | again: | |||
| 749 | /* see if we have the required fragment already */ | |||
| 750 | if ((frag_len = dtls1_retrieve_buffered_fragment(s, max, ok)) || *ok) { | |||
| 751 | if (*ok) | |||
| 752 | s->internal->init_num = frag_len; | |||
| 753 | return frag_len; | |||
| 754 | } | |||
| 755 | ||||
| 756 | /* read handshake message header */ | |||
| 757 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE22, wire, | |||
| 758 | DTLS1_HM_HEADER_LENGTH12, 0); | |||
| 759 | if (i <= 0) { | |||
| 760 | /* nbio, or an error */ | |||
| 761 | s->internal->rwstate = SSL_READING3; | |||
| 762 | *ok = 0; | |||
| 763 | return i; | |||
| 764 | } | |||
| 765 | ||||
| 766 | CBS_init(&cbs, wire, i); | |||
| 767 | if (!dtls1_get_message_header(&cbs, &msg_hdr)) { | |||
| 768 | /* Handshake fails if message header is incomplete. */ | |||
| 769 | al = SSL_AD_UNEXPECTED_MESSAGE10; | |||
| 770 | SSLerror(s, SSL_R_UNEXPECTED_MESSAGE)SSL_error_internal(s, 244, "/usr/src/lib/libssl/d1_both.c", 770 ); | |||
| 771 | goto fatal_err; | |||
| 772 | } | |||
| 773 | ||||
| 774 | /* | |||
| 775 | * if this is a future (or stale) message it gets buffered | |||
| 776 | * (or dropped)--no further processing at this time | |||
| 777 | * While listening, we accept seq 1 (ClientHello with cookie) | |||
| 778 | * although we're still expecting seq 0 (ClientHello) | |||
| 779 | */ | |||
| 780 | if (msg_hdr.seq != s->d1->handshake_read_seq && | |||
| 781 | !(s->d1->listen && msg_hdr.seq == 1)) | |||
| 782 | return dtls1_process_out_of_seq_message(s, &msg_hdr, ok); | |||
| 783 | ||||
| 784 | len = msg_hdr.msg_len; | |||
| 785 | frag_off = msg_hdr.frag_off; | |||
| 786 | frag_len = msg_hdr.frag_len; | |||
| 787 | ||||
| 788 | if (frag_len && frag_len < len) | |||
| 789 | return dtls1_reassemble_fragment(s, &msg_hdr, ok); | |||
| 790 | ||||
| 791 | if (!s->server && s->d1->r_msg_hdr.frag_off == 0 && | |||
| 792 | wire[0] == SSL3_MT_HELLO_REQUEST0) { | |||
| 793 | /* | |||
| 794 | * The server may always send 'Hello Request' messages -- | |||
| 795 | * we are doing a handshake anyway now, so ignore them | |||
| 796 | * if their format is correct. Does not count for | |||
| 797 | * 'Finished' MAC. | |||
| 798 | */ | |||
| 799 | if (wire[1] == 0 && wire[2] == 0 && wire[3] == 0) { | |||
| 800 | if (s->internal->msg_callback) | |||
| 801 | s->internal->msg_callback(0, s->version, | |||
| 802 | SSL3_RT_HANDSHAKE22, wire, | |||
| 803 | DTLS1_HM_HEADER_LENGTH12, s, | |||
| 804 | s->internal->msg_callback_arg); | |||
| 805 | ||||
| 806 | s->internal->init_num = 0; | |||
| 807 | goto again; | |||
| 808 | } | |||
| 809 | else /* Incorrectly formated Hello request */ | |||
| 810 | { | |||
| 811 | al = SSL_AD_UNEXPECTED_MESSAGE10; | |||
| 812 | SSLerror(s, SSL_R_UNEXPECTED_MESSAGE)SSL_error_internal(s, 244, "/usr/src/lib/libssl/d1_both.c", 812 ); | |||
| 813 | goto fatal_err; | |||
| 814 | } | |||
| 815 | } | |||
| 816 | ||||
| 817 | if ((al = dtls1_preprocess_fragment(s, &msg_hdr, max))) | |||
| 818 | goto fatal_err; | |||
| 819 | ||||
| 820 | /* XDTLS: ressurect this when restart is in place */ | |||
| 821 | S3I(s)(s->s3->internal)->hs.state = stn; | |||
| 822 | ||||
| 823 | if (frag_len > 0) { | |||
| 824 | unsigned char *p = (unsigned char *)s->internal->init_buf->data + DTLS1_HM_HEADER_LENGTH12; | |||
| 825 | ||||
| 826 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE22, | |||
| 827 | &p[frag_off], frag_len, 0); | |||
| 828 | /* XDTLS: fix this--message fragments cannot span multiple packets */ | |||
| 829 | if (i <= 0) { | |||
| 830 | s->internal->rwstate = SSL_READING3; | |||
| 831 | *ok = 0; | |||
| 832 | return i; | |||
| 833 | } | |||
| 834 | } else | |||
| 835 | i = 0; | |||
| 836 | ||||
| 837 | /* | |||
| 838 | * XDTLS: an incorrectly formatted fragment should cause the | |||
| 839 | * handshake to fail | |||
| 840 | */ | |||
| 841 | if (i != (int)frag_len) { | |||
| 842 | al = SSL_AD_ILLEGAL_PARAMETER47; | |||
| 843 | SSLerror(s, SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER)SSL_error_internal(s, 1047, "/usr/src/lib/libssl/d1_both.c", 843 ); | |||
| 844 | goto fatal_err; | |||
| 845 | } | |||
| 846 | ||||
| 847 | /* | |||
| 848 | * Note that s->internal->init_num is *not* used as current offset in | |||
| 849 | * s->internal->init_buf->data, but as a counter summing up fragments' | |||
| 850 | * lengths: as soon as they sum up to handshake packet | |||
| 851 | * length, we assume we have got all the fragments. | |||
| 852 | */ | |||
| 853 | s->internal->init_num = frag_len; | |||
| 854 | *ok = 1; | |||
| 855 | return frag_len; | |||
| 856 | ||||
| 857 | fatal_err: | |||
| 858 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); | |||
| 859 | s->internal->init_num = 0; | |||
| 860 | ||||
| 861 | *ok = 0; | |||
| 862 | return (-1); | |||
| 863 | } | |||
| 864 | ||||
| 865 | int | |||
| 866 | dtls1_read_failed(SSL *s, int code) | |||
| 867 | { | |||
| 868 | if (code > 0) { | |||
| 869 | #ifdef DEBUG | |||
| 870 | fprintf(stderr(&__sF[2]), "invalid state reached %s:%d", | |||
| 871 | __FILE__"/usr/src/lib/libssl/d1_both.c", __LINE__871); | |||
| 872 | #endif | |||
| 873 | return 1; | |||
| 874 | } | |||
| 875 | ||||
| 876 | if (!dtls1_is_timer_expired(s)) { | |||
| 877 | /* | |||
| 878 | * not a timeout, none of our business, let higher layers | |||
| 879 | * handle this. in fact it's probably an error | |||
| 880 | */ | |||
| 881 | return code; | |||
| 882 | } | |||
| 883 | ||||
| 884 | if (!SSL_in_init(s)(SSL_state((s))&(0x1000|0x2000))) /* done, no need to send a retransmit */ | |||
| 885 | { | |||
| 886 | BIO_set_flags(SSL_get_rbio(s), BIO_FLAGS_READ0x01); | |||
| 887 | return code; | |||
| 888 | } | |||
| 889 | ||||
| 890 | return dtls1_handle_timeout(s); | |||
| 891 | } | |||
| 892 | ||||
| 893 | int | |||
| 894 | dtls1_get_queue_priority(unsigned short seq, int is_ccs) | |||
| 895 | { | |||
| 896 | /* | |||
| 897 | * The index of the retransmission queue actually is the message | |||
| 898 | * sequence number, since the queue only contains messages of a | |||
| 899 | * single handshake. However, the ChangeCipherSpec has no message | |||
| 900 | * sequence number and so using only the sequence will result in | |||
| 901 | * the CCS and Finished having the same index. To prevent this, the | |||
| 902 | * sequence number is multiplied by 2. In case of a CCS 1 is | |||
| 903 | * subtracted. This does not only differ CSS and Finished, it also | |||
| 904 | * maintains the order of the index (important for priority queues) | |||
| 905 | * and fits in the unsigned short variable. | |||
| 906 | */ | |||
| 907 | return seq * 2 - is_ccs; | |||
| 908 | } | |||
| 909 | ||||
| 910 | int | |||
| 911 | dtls1_retransmit_buffered_messages(SSL *s) | |||
| 912 | { | |||
| 913 | pqueue sent = s->d1->sent_messages; | |||
| 914 | piterator iter; | |||
| 915 | pitem *item; | |||
| 916 | hm_fragment *frag; | |||
| 917 | int found = 0; | |||
| 918 | ||||
| 919 | iter = pqueue_iterator(sent); | |||
| 920 | ||||
| 921 | for (item = pqueue_next(&iter); item != NULL((void*)0); | |||
| 922 | item = pqueue_next(&iter)) { | |||
| 923 | frag = (hm_fragment *)item->data; | |||
| 924 | if (dtls1_retransmit_message(s, | |||
| 925 | (unsigned short)dtls1_get_queue_priority( | |||
| 926 | frag->msg_header.seq, frag->msg_header.is_ccs), 0, | |||
| 927 | &found) <= 0 && found) { | |||
| 928 | #ifdef DEBUG | |||
| 929 | fprintf(stderr(&__sF[2]), "dtls1_retransmit_message() failed\n"); | |||
| 930 | #endif | |||
| 931 | return -1; | |||
| 932 | } | |||
| 933 | } | |||
| 934 | ||||
| 935 | return 1; | |||
| 936 | } | |||
| 937 | ||||
| 938 | int | |||
| 939 | dtls1_buffer_message(SSL *s, int is_ccs) | |||
| 940 | { | |||
| 941 | pitem *item; | |||
| 942 | hm_fragment *frag; | |||
| 943 | unsigned char seq64be[8]; | |||
| 944 | ||||
| 945 | /* Buffer the messsage in order to handle DTLS retransmissions. */ | |||
| 946 | ||||
| 947 | /* | |||
| 948 | * This function is called immediately after a message has | |||
| 949 | * been serialized | |||
| 950 | */ | |||
| 951 | OPENSSL_assert(s->internal->init_off == 0)(void)((s->internal->init_off == 0) ? 0 : (OpenSSLDie("/usr/src/lib/libssl/d1_both.c" , 951, "s->internal->init_off == 0"),1)); | |||
| ||||
| 952 | ||||
| 953 | frag = dtls1_hm_fragment_new(s->internal->init_num, 0); | |||
| 954 | if (frag
| |||
| 955 | return 0; | |||
| 956 | ||||
| 957 | memcpy(frag->fragment, s->internal->init_buf->data, s->internal->init_num); | |||
| ||||
| 958 | ||||
| 959 | OPENSSL_assert(s->d1->w_msg_hdr.msg_len +(void)((s->d1->w_msg_hdr.msg_len + (is_ccs ? 1 : 12) == (unsigned int)s->internal->init_num) ? 0 : (OpenSSLDie ("/usr/src/lib/libssl/d1_both.c", 961, "s->d1->w_msg_hdr.msg_len + (is_ccs ? DTLS1_CCS_HEADER_LENGTH : DTLS1_HM_HEADER_LENGTH) == (unsigned int)s->internal->init_num" ),1)) | |||
| 960 | (is_ccs ? DTLS1_CCS_HEADER_LENGTH : DTLS1_HM_HEADER_LENGTH) ==(void)((s->d1->w_msg_hdr.msg_len + (is_ccs ? 1 : 12) == (unsigned int)s->internal->init_num) ? 0 : (OpenSSLDie ("/usr/src/lib/libssl/d1_both.c", 961, "s->d1->w_msg_hdr.msg_len + (is_ccs ? DTLS1_CCS_HEADER_LENGTH : DTLS1_HM_HEADER_LENGTH) == (unsigned int)s->internal->init_num" ),1)) | |||
| 961 | (unsigned int)s->internal->init_num)(void)((s->d1->w_msg_hdr.msg_len + (is_ccs ? 1 : 12) == (unsigned int)s->internal->init_num) ? 0 : (OpenSSLDie ("/usr/src/lib/libssl/d1_both.c", 961, "s->d1->w_msg_hdr.msg_len + (is_ccs ? DTLS1_CCS_HEADER_LENGTH : DTLS1_HM_HEADER_LENGTH) == (unsigned int)s->internal->init_num" ),1)); | |||
| 962 | ||||
| 963 | frag->msg_header.msg_len = s->d1->w_msg_hdr.msg_len; | |||
| 964 | frag->msg_header.seq = s->d1->w_msg_hdr.seq; | |||
| 965 | frag->msg_header.type = s->d1->w_msg_hdr.type; | |||
| 966 | frag->msg_header.frag_off = 0; | |||
| 967 | frag->msg_header.frag_len = s->d1->w_msg_hdr.msg_len; | |||
| 968 | frag->msg_header.is_ccs = is_ccs; | |||
| 969 | ||||
| 970 | /* save current state*/ | |||
| 971 | frag->msg_header.saved_retransmit_state.session = s->session; | |||
| 972 | frag->msg_header.saved_retransmit_state.epoch = | |||
| 973 | tls12_record_layer_write_epoch(s->internal->rl); | |||
| 974 | ||||
| 975 | memset(seq64be, 0, sizeof(seq64be)); | |||
| 976 | seq64be[6] = (unsigned char)(dtls1_get_queue_priority( | |||
| 977 | frag->msg_header.seq, frag->msg_header.is_ccs) >> 8); | |||
| 978 | seq64be[7] = (unsigned char)(dtls1_get_queue_priority( | |||
| 979 | frag->msg_header.seq, frag->msg_header.is_ccs)); | |||
| 980 | ||||
| 981 | item = pitem_new(seq64be, frag); | |||
| 982 | if (item == NULL((void*)0)) { | |||
| 983 | dtls1_hm_fragment_free(frag); | |||
| 984 | return 0; | |||
| 985 | } | |||
| 986 | ||||
| 987 | pqueue_insert(s->d1->sent_messages, item); | |||
| 988 | return 1; | |||
| 989 | } | |||
| 990 | ||||
| 991 | int | |||
| 992 | dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off, | |||
| 993 | int *found) | |||
| 994 | { | |||
| 995 | int ret; | |||
| 996 | /* XDTLS: for now assuming that read/writes are blocking */ | |||
| 997 | pitem *item; | |||
| 998 | hm_fragment *frag; | |||
| 999 | unsigned long header_length; | |||
| 1000 | unsigned char seq64be[8]; | |||
| 1001 | struct dtls1_retransmit_state saved_state; | |||
| 1002 | ||||
| 1003 | /* | |||
| 1004 | OPENSSL_assert(s->internal->init_num == 0); | |||
| 1005 | OPENSSL_assert(s->internal->init_off == 0); | |||
| 1006 | */ | |||
| 1007 | ||||
| 1008 | /* XDTLS: the requested message ought to be found, otherwise error */ | |||
| 1009 | memset(seq64be, 0, sizeof(seq64be)); | |||
| 1010 | seq64be[6] = (unsigned char)(seq >> 8); | |||
| 1011 | seq64be[7] = (unsigned char)seq; | |||
| 1012 | ||||
| 1013 | item = pqueue_find(s->d1->sent_messages, seq64be); | |||
| 1014 | if (item == NULL((void*)0)) { | |||
| 1015 | #ifdef DEBUG | |||
| 1016 | fprintf(stderr(&__sF[2]), "retransmit: message %d non-existent\n", seq); | |||
| 1017 | #endif | |||
| 1018 | *found = 0; | |||
| 1019 | return 0; | |||
| 1020 | } | |||
| 1021 | ||||
| 1022 | *found = 1; | |||
| 1023 | frag = (hm_fragment *)item->data; | |||
| 1024 | ||||
| 1025 | if (frag->msg_header.is_ccs) | |||
| 1026 | header_length = DTLS1_CCS_HEADER_LENGTH1; | |||
| 1027 | else | |||
| 1028 | header_length = DTLS1_HM_HEADER_LENGTH12; | |||
| 1029 | ||||
| 1030 | memcpy(s->internal->init_buf->data, frag->fragment, | |||
| 1031 | frag->msg_header.msg_len + header_length); | |||
| 1032 | s->internal->init_num = frag->msg_header.msg_len + header_length; | |||
| 1033 | ||||
| 1034 | dtls1_set_message_header_int(s, frag->msg_header.type, | |||
| 1035 | frag->msg_header.msg_len, frag->msg_header.seq, 0, | |||
| 1036 | frag->msg_header.frag_len); | |||
| 1037 | ||||
| 1038 | /* save current state */ | |||
| 1039 | saved_state.session = s->session; | |||
| 1040 | saved_state.epoch = tls12_record_layer_write_epoch(s->internal->rl); | |||
| 1041 | ||||
| 1042 | s->d1->retransmitting = 1; | |||
| 1043 | ||||
| 1044 | /* restore state in which the message was originally sent */ | |||
| 1045 | s->session = frag->msg_header.saved_retransmit_state.session; | |||
| 1046 | if (!tls12_record_layer_use_write_epoch(s->internal->rl, | |||
| 1047 | frag->msg_header.saved_retransmit_state.epoch)) | |||
| 1048 | return 0; | |||
| 1049 | ||||
| 1050 | ret = dtls1_do_write(s, frag->msg_header.is_ccs ? | |||
| 1051 | SSL3_RT_CHANGE_CIPHER_SPEC20 : SSL3_RT_HANDSHAKE22); | |||
| 1052 | ||||
| 1053 | /* restore current state */ | |||
| 1054 | s->session = saved_state.session; | |||
| 1055 | if (!tls12_record_layer_use_write_epoch(s->internal->rl, | |||
| 1056 | saved_state.epoch)) | |||
| 1057 | return 0; | |||
| 1058 | ||||
| 1059 | s->d1->retransmitting = 0; | |||
| 1060 | ||||
| 1061 | (void)BIO_flush(SSL_get_wbio(s))(int)BIO_ctrl(SSL_get_wbio(s),11,0,((void*)0)); | |||
| 1062 | return ret; | |||
| 1063 | } | |||
| 1064 | ||||
| 1065 | /* call this function when the buffered messages are no longer needed */ | |||
| 1066 | void | |||
| 1067 | dtls1_clear_record_buffer(SSL *s) | |||
| 1068 | { | |||
| 1069 | hm_fragment *frag; | |||
| 1070 | pitem *item; | |||
| 1071 | ||||
| 1072 | for(item = pqueue_pop(s->d1->sent_messages); item != NULL((void*)0); | |||
| 1073 | item = pqueue_pop(s->d1->sent_messages)) { | |||
| 1074 | frag = item->data; | |||
| 1075 | if (frag->msg_header.is_ccs) | |||
| 1076 | tls12_record_layer_write_epoch_done(s->internal->rl, | |||
| 1077 | frag->msg_header.saved_retransmit_state.epoch); | |||
| 1078 | dtls1_hm_fragment_free(frag); | |||
| 1079 | pitem_free(item); | |||
| 1080 | } | |||
| 1081 | } | |||
| 1082 | ||||
| 1083 | void | |||
| 1084 | dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len, | |||
| 1085 | unsigned long frag_off, unsigned long frag_len) | |||
| 1086 | { | |||
| 1087 | /* Don't change sequence numbers while listening */ | |||
| 1088 | if (frag_off == 0 && !s->d1->listen) { | |||
| 1089 | s->d1->handshake_write_seq = s->d1->next_handshake_write_seq; | |||
| 1090 | s->d1->next_handshake_write_seq++; | |||
| 1091 | } | |||
| 1092 | ||||
| 1093 | dtls1_set_message_header_int(s, mt, len, s->d1->handshake_write_seq, | |||
| 1094 | frag_off, frag_len); | |||
| 1095 | } | |||
| 1096 | ||||
| 1097 | /* don't actually do the writing, wait till the MTU has been retrieved */ | |||
| 1098 | void | |||
| 1099 | dtls1_set_message_header_int(SSL *s, unsigned char mt, unsigned long len, | |||
| 1100 | unsigned short seq_num, unsigned long frag_off, unsigned long frag_len) | |||
| 1101 | { | |||
| 1102 | struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr; | |||
| 1103 | ||||
| 1104 | msg_hdr->type = mt; | |||
| 1105 | msg_hdr->msg_len = len; | |||
| 1106 | msg_hdr->seq = seq_num; | |||
| 1107 | msg_hdr->frag_off = frag_off; | |||
| 1108 | msg_hdr->frag_len = frag_len; | |||
| 1109 | } | |||
| 1110 | ||||
| 1111 | static void | |||
| 1112 | dtls1_fix_message_header(SSL *s, unsigned long frag_off, unsigned long frag_len) | |||
| 1113 | { | |||
| 1114 | struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr; | |||
| 1115 | ||||
| 1116 | msg_hdr->frag_off = frag_off; | |||
| 1117 | msg_hdr->frag_len = frag_len; | |||
| 1118 | } | |||
| 1119 | ||||
| 1120 | static int | |||
| 1121 | dtls1_write_message_header(const struct hm_header_st *msg_hdr, | |||
| 1122 | unsigned long frag_off, unsigned long frag_len, unsigned char *p) | |||
| 1123 | { | |||
| 1124 | CBB cbb; | |||
| 1125 | ||||
| 1126 | /* We assume DTLS1_HM_HEADER_LENGTH bytes are available for now... */ | |||
| 1127 | if (!CBB_init_fixed(&cbb, p, DTLS1_HM_HEADER_LENGTH12)) | |||
| 1128 | return 0; | |||
| 1129 | if (!CBB_add_u8(&cbb, msg_hdr->type)) | |||
| 1130 | goto err; | |||
| 1131 | if (!CBB_add_u24(&cbb, msg_hdr->msg_len)) | |||
| 1132 | goto err; | |||
| 1133 | if (!CBB_add_u16(&cbb, msg_hdr->seq)) | |||
| 1134 | goto err; | |||
| 1135 | if (!CBB_add_u24(&cbb, frag_off)) | |||
| 1136 | goto err; | |||
| 1137 | if (!CBB_add_u24(&cbb, frag_len)) | |||
| 1138 | goto err; | |||
| 1139 | if (!CBB_finish(&cbb, NULL((void*)0), NULL((void*)0))) | |||
| 1140 | goto err; | |||
| 1141 | ||||
| 1142 | return 1; | |||
| 1143 | ||||
| 1144 | err: | |||
| 1145 | CBB_cleanup(&cbb); | |||
| 1146 | return 0; | |||
| 1147 | } | |||
| 1148 | ||||
| 1149 | unsigned int | |||
| 1150 | dtls1_min_mtu(void) | |||
| 1151 | { | |||
| 1152 | return (g_probable_mtu[(sizeof(g_probable_mtu) / | |||
| 1153 | sizeof(g_probable_mtu[0])) - 1]); | |||
| 1154 | } | |||
| 1155 | ||||
| 1156 | static unsigned int | |||
| 1157 | dtls1_guess_mtu(unsigned int curr_mtu) | |||
| 1158 | { | |||
| 1159 | unsigned int i; | |||
| 1160 | ||||
| 1161 | if (curr_mtu == 0) | |||
| 1162 | return g_probable_mtu[0]; | |||
| 1163 | ||||
| 1164 | for (i = 0; i < sizeof(g_probable_mtu) / sizeof(g_probable_mtu[0]); i++) | |||
| 1165 | if (curr_mtu > g_probable_mtu[i]) | |||
| 1166 | return g_probable_mtu[i]; | |||
| 1167 | ||||
| 1168 | return curr_mtu; | |||
| 1169 | } | |||
| 1170 | ||||
| 1171 | int | |||
| 1172 | dtls1_get_message_header(CBS *header, struct hm_header_st *msg_hdr) | |||
| 1173 | { | |||
| 1174 | uint32_t msg_len, frag_off, frag_len; | |||
| 1175 | uint16_t seq; | |||
| 1176 | uint8_t type; | |||
| 1177 | ||||
| 1178 | memset(msg_hdr, 0, sizeof(*msg_hdr)); | |||
| 1179 | ||||
| 1180 | if (!CBS_get_u8(header, &type)) | |||
| 1181 | return 0; | |||
| 1182 | if (!CBS_get_u24(header, &msg_len)) | |||
| 1183 | return 0; | |||
| 1184 | if (!CBS_get_u16(header, &seq)) | |||
| 1185 | return 0; | |||
| 1186 | if (!CBS_get_u24(header, &frag_off)) | |||
| 1187 | return 0; | |||
| 1188 | if (!CBS_get_u24(header, &frag_len)) | |||
| 1189 | return 0; | |||
| 1190 | ||||
| 1191 | msg_hdr->type = type; | |||
| 1192 | msg_hdr->msg_len = msg_len; | |||
| 1193 | msg_hdr->seq = seq; | |||
| 1194 | msg_hdr->frag_off = frag_off; | |||
| 1195 | msg_hdr->frag_len = frag_len; | |||
| 1196 | ||||
| 1197 | return 1; | |||
| 1198 | } |