ssl/record/ssl3_record.c:327: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 5):unsigned64.
Showing all 4 steps of the trace


ssl/record/ssl3_record.c:195:20: <LHS trace>
193.               unsigned int type;
194.   
195.               rret = ssl3_read_n(s, SSL3_RT_HEADER_LENGTH,
                          ^
196.                                  SSL3_BUFFER_get_len(rbuf), 0,
197.                                  num_recs == 0 ? 1 : 0, &n);

ssl/record/ssl3_record.c:195:20: Call
193.               unsigned int type;
194.   
195.               rret = ssl3_read_n(s, SSL3_RT_HEADER_LENGTH,
                          ^
196.                                  SSL3_BUFFER_get_len(rbuf), 0,
197.                                  num_recs == 0 ? 1 : 0, &n);

ssl/record/rec_layer_s3.c:170:1: Parameter `n`
  168.    * Return values are as per SSL_read()
  169.    */
  170. > int ssl3_read_n(SSL *s, size_t n, size_t max, int extend, int clearold,
  171.                   size_t *readbytes)
  172.   {

ssl/record/ssl3_record.c:327:21: Binary operation: ([0, +oo] - 5):unsigned64
325.                   }
326.   
327.                   if (thisrr->length >
                           ^
328.                       SSL3_BUFFER_get_len(rbuf) - SSL3_RT_HEADER_LENGTH) {
329.                       al = SSL_AD_RECORD_OVERFLOW;

int ssl3_get_record(SSL *s)
{
    int al;
    int enc_err, rret, ret = -1;
    int i;
    size_t more, n;
    SSL3_RECORD *rr, *thisrr;
    SSL3_BUFFER *rbuf;
    SSL_SESSION *sess;
    unsigned char *p;
    unsigned char md[EVP_MAX_MD_SIZE];
    unsigned int version;
    size_t mac_size;
    int imac_size;
    size_t num_recs = 0, max_recs, j;
    PACKET pkt, sslv2pkt;
    size_t first_rec_len;
    rr = RECORD_LAYER_get_rrec(&s->rlayer);
    rbuf = RECORD_LAYER_get_rbuf(&s->rlayer);
    max_recs = s->max_pipelines;
    if (max_recs == 0)
        max_recs = 1;
    sess = s->session;
    do {
        thisrr = &rr[num_recs];
        if ((RECORD_LAYER_get_rstate(&s->rlayer) != SSL_ST_READ_BODY) ||
            (RECORD_LAYER_get_packet_length(&s->rlayer)
             < SSL3_RT_HEADER_LENGTH)) {
            size_t sslv2len;
            unsigned int type;
            rret = ssl3_read_n(s, SSL3_RT_HEADER_LENGTH,
                               SSL3_BUFFER_get_len(rbuf), 0,
                               num_recs == 0 ? 1 : 0, &n);
            if (rret <= 0)
                return rret;
            RECORD_LAYER_set_rstate(&s->rlayer, SSL_ST_READ_BODY);
            p = RECORD_LAYER_get_packet(&s->rlayer);
            if (!PACKET_buf_init(&pkt, RECORD_LAYER_get_packet(&s->rlayer),
                                 RECORD_LAYER_get_packet_length(&s->rlayer))) {
                al = SSL_AD_INTERNAL_ERROR;
                SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);
                goto f_err;
            }
            sslv2pkt = pkt;
            if (!PACKET_get_net_2_len(&sslv2pkt, &sslv2len)
                    || !PACKET_get_1(&sslv2pkt, &type)) {
                al = SSL_AD_DECODE_ERROR;
                SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);
                goto f_err;
            }
            if (s->server && RECORD_LAYER_is_first_record(&s->rlayer)
                    && (sslv2len & 0x8000) != 0
                    && (type == SSL2_MT_CLIENT_HELLO)) {
                thisrr->type = SSL3_RT_HANDSHAKE;
                thisrr->rec_version = SSL2_VERSION;
                thisrr->length = sslv2len & 0x7fff;
                if (thisrr->length > SSL3_BUFFER_get_len(rbuf)
                    - SSL2_RT_HEADER_LENGTH) {
                    al = SSL_AD_RECORD_OVERFLOW;
                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_PACKET_LENGTH_TOO_LONG);
                    goto f_err;
                }
                if (thisrr->length < MIN_SSL2_RECORD_LEN) {
                    al = SSL_AD_DECODE_ERROR;
                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_LENGTH_TOO_SHORT);
                    goto f_err;
                }
            } else {
                if (s->msg_callback)
                    s->msg_callback(0, 0, SSL3_RT_HEADER, p, 5, s,
                                    s->msg_callback_arg);
                if (!PACKET_get_1(&pkt, &type)
                        || !PACKET_get_net_2(&pkt, &version)
                        || !PACKET_get_net_2_len(&pkt, &thisrr->length)) {
                    al = SSL_AD_DECODE_ERROR;
                    SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);
                    goto f_err;
                }
                thisrr->type = type;
                thisrr->rec_version = version;
                if (!s->first_packet && !SSL_IS_TLS13(s)
                        && version != (unsigned int)s->version) {
                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_WRONG_VERSION_NUMBER);
                    if ((s->version & 0xFF00) == (version & 0xFF00)
                        && !s->enc_write_ctx && !s->write_hash) {
                        if (thisrr->type == SSL3_RT_ALERT) {
                            goto err;
                        }
                        s->version = (unsigned short)version;
                    }
                    al = SSL_AD_PROTOCOL_VERSION;
                    goto f_err;
                }
                if ((version >> 8) != SSL3_VERSION_MAJOR) {
                    if (RECORD_LAYER_is_first_record(&s->rlayer)) {
                        p = RECORD_LAYER_get_packet(&s->rlayer);
                        if (strncmp((char *)p, "GET ", 4) == 0 ||
                            strncmp((char *)p, "POST ", 5) == 0 ||
                            strncmp((char *)p, "HEAD ", 5) == 0 ||
                            strncmp((char *)p, "PUT ", 4) == 0) {
                            SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_HTTP_REQUEST);
                            goto err;
                        } else if (strncmp((char *)p, "CONNE", 5) == 0) {
                            SSLerr(SSL_F_SSL3_GET_RECORD,
                                   SSL_R_HTTPS_PROXY_REQUEST);
                            goto err;
                        }
                        SSLerr(SSL_F_SSL3_GET_RECORD,
                               SSL_R_WRONG_VERSION_NUMBER);
                        goto err;
                    } else {
                        SSLerr(SSL_F_SSL3_GET_RECORD,
                               SSL_R_WRONG_VERSION_NUMBER);
                        al = SSL_AD_PROTOCOL_VERSION;
                        goto f_err;
                    }
                }
                if (SSL_IS_TLS13(s) && s->enc_read_ctx != NULL
                        && thisrr->type != SSL3_RT_APPLICATION_DATA) {
                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_RECORD_TYPE);
                    al = SSL_AD_UNEXPECTED_MESSAGE;
                    goto f_err;
                }
                if (thisrr->length >
                    SSL3_BUFFER_get_len(rbuf) - SSL3_RT_HEADER_LENGTH) {
                    al = SSL_AD_RECORD_OVERFLOW;
                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_PACKET_LENGTH_TOO_LONG);
                    goto f_err;
                }
            }
        }
        if (SSL_IS_TLS13(s)) {
            if (thisrr->length > SSL3_RT_MAX_TLS13_ENCRYPTED_LENGTH) {
                al = SSL_AD_RECORD_OVERFLOW;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
                goto f_err;
            }
        } else {
            size_t len = SSL3_RT_MAX_ENCRYPTED_LENGTH;
#ifndef OPENSSL_NO_COMP
            if (s->expand == NULL)
                len -= SSL3_RT_MAX_COMPRESSED_OVERHEAD;
#endif
            if (thisrr->length > len) {
                al = SSL_AD_RECORD_OVERFLOW;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
                goto f_err;
            }
        }
        if (thisrr->rec_version == SSL2_VERSION) {
            more = thisrr->length + SSL2_RT_HEADER_LENGTH
                - SSL3_RT_HEADER_LENGTH;
        } else {
            more = thisrr->length;
        }
        if (more > 0) {
            rret = ssl3_read_n(s, more, more, 1, 0, &n);
            if (rret <= 0)
                return rret;
        }
        RECORD_LAYER_set_rstate(&s->rlayer, SSL_ST_READ_HEADER);
        if (thisrr->rec_version == SSL2_VERSION) {
            thisrr->input =
                &(RECORD_LAYER_get_packet(&s->rlayer)[SSL2_RT_HEADER_LENGTH]);
        } else {
            thisrr->input =
                &(RECORD_LAYER_get_packet(&s->rlayer)[SSL3_RT_HEADER_LENGTH]);
        }
        thisrr->data = thisrr->input;
        thisrr->orig_len = thisrr->length;
        thisrr->read = 0;
        num_recs++;
        RECORD_LAYER_reset_packet_length(&s->rlayer);
        RECORD_LAYER_clear_first_record(&s->rlayer);
    } while (num_recs < max_recs
             && thisrr->type == SSL3_RT_APPLICATION_DATA
             && SSL_USE_EXPLICIT_IV(s)
             && s->enc_read_ctx != NULL
             && (EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(s->enc_read_ctx))
                 & EVP_CIPH_FLAG_PIPELINE)
             && ssl3_record_app_data_waiting(s));
    if (SSL_READ_ETM(s) && s->read_hash) {
        unsigned char *mac;
        imac_size = EVP_MD_CTX_size(s->read_hash);
        if (!ossl_assert(imac_size >= 0 && imac_size <= EVP_MAX_MD_SIZE)) {
                al = SSL_AD_INTERNAL_ERROR;
                SSLerr(SSL_F_SSL3_GET_RECORD, ERR_LIB_EVP);
                goto f_err;
        }
        mac_size = (size_t)imac_size;
        for (j = 0; j < num_recs; j++) {
            thisrr = &rr[j];
            if (thisrr->length < mac_size) {
                al = SSL_AD_DECODE_ERROR;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_LENGTH_TOO_SHORT);
                goto f_err;
            }
            thisrr->length -= mac_size;
            mac = thisrr->data + thisrr->length;
            i = s->method->ssl3_enc->mac(s, thisrr, md, 0   );
            if (i == 0 || CRYPTO_memcmp(md, mac, mac_size) != 0) {
                al = SSL_AD_BAD_RECORD_MAC;
                SSLerr(SSL_F_SSL3_GET_RECORD,
                       SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
                goto f_err;
            }
        }
    }
    first_rec_len = rr[0].length;
    enc_err = s->method->ssl3_enc->enc(s, rr, num_recs, 0);
    if (enc_err == 0) {
        if (num_recs == 1 && ossl_statem_skip_early_data(s)) {
            thisrr = &rr[0];
            if (!early_data_count_ok(s, thisrr->length,
                                     EARLY_DATA_CIPHERTEXT_OVERHEAD, &al))
                goto f_err;
            thisrr->length = 0;
            thisrr->read = 1;
            RECORD_LAYER_set_numrpipes(&s->rlayer, 1);
            RECORD_LAYER_reset_read_sequence(&s->rlayer);
            return 1;
        }
        al = SSL_AD_DECRYPTION_FAILED;
        SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
        goto f_err;
    }
#ifdef SSL_DEBUG
    printf("dec %"OSSLzu"\n", rr[0].length);
    {
        size_t z;
        for (z = 0; z < rr[0].length; z++)
            printf("%02X%c", rr[0].data[z], ((z + 1) % 16) ? ' ' : '\n');
    }
    printf("\n");
#endif
    if ((sess != NULL) &&
        (s->enc_read_ctx != NULL) &&
        (!SSL_READ_ETM(s) && EVP_MD_CTX_md(s->read_hash) != NULL)) {
        unsigned char *mac = NULL;
        unsigned char mac_tmp[EVP_MAX_MD_SIZE];
        mac_size = EVP_MD_CTX_size(s->read_hash);
        if (!ossl_assert(mac_size <= EVP_MAX_MD_SIZE)) {
            al = SSL_AD_INTERNAL_ERROR;
            SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);
            goto f_err;
        }
        for (j = 0; j < num_recs; j++) {
            thisrr = &rr[j];
            if (thisrr->orig_len < mac_size ||
                (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
                 thisrr->orig_len < mac_size + 1)) {
                al = SSL_AD_DECODE_ERROR;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_LENGTH_TOO_SHORT);
                goto f_err;
            }
            if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE) {
                mac = mac_tmp;
                if (!ssl3_cbc_copy_mac(mac_tmp, thisrr, mac_size)) {
                    al = SSL_AD_INTERNAL_ERROR;
                    SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);
                    goto f_err;
                }
                thisrr->length -= mac_size;
            } else {
                thisrr->length -= mac_size;
                mac = &thisrr->data[thisrr->length];
            }
            i = s->method->ssl3_enc->mac(s, thisrr, md, 0   );
            if (i == 0 || mac == NULL
                || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0)
                enc_err = -1;
            if (thisrr->length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size)
                enc_err = -1;
        }
    }
    if (enc_err < 0) {
        if (num_recs == 1 && ossl_statem_skip_early_data(s)) {
            if (!early_data_count_ok(s, first_rec_len,
                                     EARLY_DATA_CIPHERTEXT_OVERHEAD, &al))
                goto f_err;
            thisrr = &rr[0];
            thisrr->length = 0;
            thisrr->read = 1;
            RECORD_LAYER_set_numrpipes(&s->rlayer, 1);
            RECORD_LAYER_reset_read_sequence(&s->rlayer);
            return 1;
        }
        al = SSL_AD_BAD_RECORD_MAC;
        SSLerr(SSL_F_SSL3_GET_RECORD,
               SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
        goto f_err;
    }
    for (j = 0; j < num_recs; j++) {
        thisrr = &rr[j];
        if (s->expand != NULL) {
            if (thisrr->length > SSL3_RT_MAX_COMPRESSED_LENGTH) {
                al = SSL_AD_RECORD_OVERFLOW;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_COMPRESSED_LENGTH_TOO_LONG);
                goto f_err;
            }
            if (!ssl3_do_uncompress(s, thisrr)) {
                al = SSL_AD_DECOMPRESSION_FAILURE;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_DECOMPRESSION);
                goto f_err;
            }
        }
        if (SSL_IS_TLS13(s) && s->enc_read_ctx != NULL) {
            size_t end;
            if (thisrr->length == 0
                    || thisrr->type != SSL3_RT_APPLICATION_DATA) {
                al = SSL_AD_UNEXPECTED_MESSAGE;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_RECORD_TYPE);
                goto f_err;
            }
            for (end = thisrr->length - 1; end > 0 && thisrr->data[end] == 0;
                 end--)
                continue;
            thisrr->length = end;
            thisrr->type = thisrr->data[end];
            if (thisrr->type != SSL3_RT_APPLICATION_DATA
                    && thisrr->type != SSL3_RT_ALERT
                    && thisrr->type != SSL3_RT_HANDSHAKE) {
                al = SSL_AD_UNEXPECTED_MESSAGE;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_RECORD_TYPE);
                goto f_err;
            }
            if (s->msg_callback)
                s->msg_callback(0, s->version, SSL3_RT_INNER_CONTENT_TYPE,
                                &thisrr->data[end], 1, s, s->msg_callback_arg);
        }
        if (SSL_IS_TLS13(s)
                && (thisrr->type == SSL3_RT_HANDSHAKE
                    || thisrr->type == SSL3_RT_ALERT)
                && thisrr->length == 0) {
            al = SSL_AD_UNEXPECTED_MESSAGE;
            SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_LENGTH);
            goto f_err;
        }
        if (thisrr->length > SSL3_RT_MAX_PLAIN_LENGTH) {
            al = SSL_AD_RECORD_OVERFLOW;
            SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_DATA_LENGTH_TOO_LONG);
            goto f_err;
        }
        thisrr->off = 0;
        if (thisrr->length == 0) {
            RECORD_LAYER_inc_empty_record_count(&s->rlayer);
            if (RECORD_LAYER_get_empty_record_count(&s->rlayer)
                > MAX_EMPTY_RECORDS) {
                al = SSL_AD_UNEXPECTED_MESSAGE;
                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_RECORD_TOO_SMALL);
                goto f_err;
            }
        } else {
            RECORD_LAYER_reset_empty_record_count(&s->rlayer);
        }
    }
    if (s->early_data_state == SSL_EARLY_DATA_READING) {
        thisrr = &rr[0];
        if (thisrr->type == SSL3_RT_APPLICATION_DATA
                && !early_data_count_ok(s, thisrr->length, 0, &al))
            goto f_err;
    }
    RECORD_LAYER_set_numrpipes(&s->rlayer, num_recs);
    return 1;
 f_err:
    ssl3_send_alert(s, SSL3_AL_FATAL, al);
 err:
    return ret;
}
['int ssl3_get_record(SSL *s)\n{\n    int al;\n    int enc_err, rret, ret = -1;\n    int i;\n    size_t more, n;\n    SSL3_RECORD *rr, *thisrr;\n    SSL3_BUFFER *rbuf;\n    SSL_SESSION *sess;\n    unsigned char *p;\n    unsigned char md[EVP_MAX_MD_SIZE];\n    unsigned int version;\n    size_t mac_size;\n    int imac_size;\n    size_t num_recs = 0, max_recs, j;\n    PACKET pkt, sslv2pkt;\n    size_t first_rec_len;\n    rr = RECORD_LAYER_get_rrec(&s->rlayer);\n    rbuf = RECORD_LAYER_get_rbuf(&s->rlayer);\n    max_recs = s->max_pipelines;\n    if (max_recs == 0)\n        max_recs = 1;\n    sess = s->session;\n    do {\n        thisrr = &rr[num_recs];\n        if ((RECORD_LAYER_get_rstate(&s->rlayer) != SSL_ST_READ_BODY) ||\n            (RECORD_LAYER_get_packet_length(&s->rlayer)\n             < SSL3_RT_HEADER_LENGTH)) {\n            size_t sslv2len;\n            unsigned int type;\n            rret = ssl3_read_n(s, SSL3_RT_HEADER_LENGTH,\n                               SSL3_BUFFER_get_len(rbuf), 0,\n                               num_recs == 0 ? 1 : 0, &n);\n            if (rret <= 0)\n                return rret;\n            RECORD_LAYER_set_rstate(&s->rlayer, SSL_ST_READ_BODY);\n            p = RECORD_LAYER_get_packet(&s->rlayer);\n            if (!PACKET_buf_init(&pkt, RECORD_LAYER_get_packet(&s->rlayer),\n                                 RECORD_LAYER_get_packet_length(&s->rlayer))) {\n                al = SSL_AD_INTERNAL_ERROR;\n                SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);\n                goto f_err;\n            }\n            sslv2pkt = pkt;\n            if (!PACKET_get_net_2_len(&sslv2pkt, &sslv2len)\n                    || !PACKET_get_1(&sslv2pkt, &type)) {\n                al = SSL_AD_DECODE_ERROR;\n                SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);\n                goto f_err;\n            }\n            if (s->server && RECORD_LAYER_is_first_record(&s->rlayer)\n                    && (sslv2len & 0x8000) != 0\n                    && (type == SSL2_MT_CLIENT_HELLO)) {\n                thisrr->type = SSL3_RT_HANDSHAKE;\n                thisrr->rec_version = SSL2_VERSION;\n                thisrr->length = sslv2len & 0x7fff;\n                if (thisrr->length > SSL3_BUFFER_get_len(rbuf)\n                    - SSL2_RT_HEADER_LENGTH) {\n                    al = SSL_AD_RECORD_OVERFLOW;\n                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_PACKET_LENGTH_TOO_LONG);\n                    goto f_err;\n                }\n                if (thisrr->length < MIN_SSL2_RECORD_LEN) {\n                    al = SSL_AD_DECODE_ERROR;\n                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_LENGTH_TOO_SHORT);\n                    goto f_err;\n                }\n            } else {\n                if (s->msg_callback)\n                    s->msg_callback(0, 0, SSL3_RT_HEADER, p, 5, s,\n                                    s->msg_callback_arg);\n                if (!PACKET_get_1(&pkt, &type)\n                        || !PACKET_get_net_2(&pkt, &version)\n                        || !PACKET_get_net_2_len(&pkt, &thisrr->length)) {\n                    al = SSL_AD_DECODE_ERROR;\n                    SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);\n                    goto f_err;\n                }\n                thisrr->type = type;\n                thisrr->rec_version = version;\n                if (!s->first_packet && !SSL_IS_TLS13(s)\n                        && version != (unsigned int)s->version) {\n                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_WRONG_VERSION_NUMBER);\n                    if ((s->version & 0xFF00) == (version & 0xFF00)\n                        && !s->enc_write_ctx && !s->write_hash) {\n                        if (thisrr->type == SSL3_RT_ALERT) {\n                            goto err;\n                        }\n                        s->version = (unsigned short)version;\n                    }\n                    al = SSL_AD_PROTOCOL_VERSION;\n                    goto f_err;\n                }\n                if ((version >> 8) != SSL3_VERSION_MAJOR) {\n                    if (RECORD_LAYER_is_first_record(&s->rlayer)) {\n                        p = RECORD_LAYER_get_packet(&s->rlayer);\n                        if (strncmp((char *)p, "GET ", 4) == 0 ||\n                            strncmp((char *)p, "POST ", 5) == 0 ||\n                            strncmp((char *)p, "HEAD ", 5) == 0 ||\n                            strncmp((char *)p, "PUT ", 4) == 0) {\n                            SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_HTTP_REQUEST);\n                            goto err;\n                        } else if (strncmp((char *)p, "CONNE", 5) == 0) {\n                            SSLerr(SSL_F_SSL3_GET_RECORD,\n                                   SSL_R_HTTPS_PROXY_REQUEST);\n                            goto err;\n                        }\n                        SSLerr(SSL_F_SSL3_GET_RECORD,\n                               SSL_R_WRONG_VERSION_NUMBER);\n                        goto err;\n                    } else {\n                        SSLerr(SSL_F_SSL3_GET_RECORD,\n                               SSL_R_WRONG_VERSION_NUMBER);\n                        al = SSL_AD_PROTOCOL_VERSION;\n                        goto f_err;\n                    }\n                }\n                if (SSL_IS_TLS13(s) && s->enc_read_ctx != NULL\n                        && thisrr->type != SSL3_RT_APPLICATION_DATA) {\n                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_RECORD_TYPE);\n                    al = SSL_AD_UNEXPECTED_MESSAGE;\n                    goto f_err;\n                }\n                if (thisrr->length >\n                    SSL3_BUFFER_get_len(rbuf) - SSL3_RT_HEADER_LENGTH) {\n                    al = SSL_AD_RECORD_OVERFLOW;\n                    SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_PACKET_LENGTH_TOO_LONG);\n                    goto f_err;\n                }\n            }\n        }\n        if (SSL_IS_TLS13(s)) {\n            if (thisrr->length > SSL3_RT_MAX_TLS13_ENCRYPTED_LENGTH) {\n                al = SSL_AD_RECORD_OVERFLOW;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);\n                goto f_err;\n            }\n        } else {\n            size_t len = SSL3_RT_MAX_ENCRYPTED_LENGTH;\n#ifndef OPENSSL_NO_COMP\n            if (s->expand == NULL)\n                len -= SSL3_RT_MAX_COMPRESSED_OVERHEAD;\n#endif\n            if (thisrr->length > len) {\n                al = SSL_AD_RECORD_OVERFLOW;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);\n                goto f_err;\n            }\n        }\n        if (thisrr->rec_version == SSL2_VERSION) {\n            more = thisrr->length + SSL2_RT_HEADER_LENGTH\n                - SSL3_RT_HEADER_LENGTH;\n        } else {\n            more = thisrr->length;\n        }\n        if (more > 0) {\n            rret = ssl3_read_n(s, more, more, 1, 0, &n);\n            if (rret <= 0)\n                return rret;\n        }\n        RECORD_LAYER_set_rstate(&s->rlayer, SSL_ST_READ_HEADER);\n        if (thisrr->rec_version == SSL2_VERSION) {\n            thisrr->input =\n                &(RECORD_LAYER_get_packet(&s->rlayer)[SSL2_RT_HEADER_LENGTH]);\n        } else {\n            thisrr->input =\n                &(RECORD_LAYER_get_packet(&s->rlayer)[SSL3_RT_HEADER_LENGTH]);\n        }\n        thisrr->data = thisrr->input;\n        thisrr->orig_len = thisrr->length;\n        thisrr->read = 0;\n        num_recs++;\n        RECORD_LAYER_reset_packet_length(&s->rlayer);\n        RECORD_LAYER_clear_first_record(&s->rlayer);\n    } while (num_recs < max_recs\n             && thisrr->type == SSL3_RT_APPLICATION_DATA\n             && SSL_USE_EXPLICIT_IV(s)\n             && s->enc_read_ctx != NULL\n             && (EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(s->enc_read_ctx))\n                 & EVP_CIPH_FLAG_PIPELINE)\n             && ssl3_record_app_data_waiting(s));\n    if (SSL_READ_ETM(s) && s->read_hash) {\n        unsigned char *mac;\n        imac_size = EVP_MD_CTX_size(s->read_hash);\n        if (!ossl_assert(imac_size >= 0 && imac_size <= EVP_MAX_MD_SIZE)) {\n                al = SSL_AD_INTERNAL_ERROR;\n                SSLerr(SSL_F_SSL3_GET_RECORD, ERR_LIB_EVP);\n                goto f_err;\n        }\n        mac_size = (size_t)imac_size;\n        for (j = 0; j < num_recs; j++) {\n            thisrr = &rr[j];\n            if (thisrr->length < mac_size) {\n                al = SSL_AD_DECODE_ERROR;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_LENGTH_TOO_SHORT);\n                goto f_err;\n            }\n            thisrr->length -= mac_size;\n            mac = thisrr->data + thisrr->length;\n            i = s->method->ssl3_enc->mac(s, thisrr, md, 0   );\n            if (i == 0 || CRYPTO_memcmp(md, mac, mac_size) != 0) {\n                al = SSL_AD_BAD_RECORD_MAC;\n                SSLerr(SSL_F_SSL3_GET_RECORD,\n                       SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);\n                goto f_err;\n            }\n        }\n    }\n    first_rec_len = rr[0].length;\n    enc_err = s->method->ssl3_enc->enc(s, rr, num_recs, 0);\n    if (enc_err == 0) {\n        if (num_recs == 1 && ossl_statem_skip_early_data(s)) {\n            thisrr = &rr[0];\n            if (!early_data_count_ok(s, thisrr->length,\n                                     EARLY_DATA_CIPHERTEXT_OVERHEAD, &al))\n                goto f_err;\n            thisrr->length = 0;\n            thisrr->read = 1;\n            RECORD_LAYER_set_numrpipes(&s->rlayer, 1);\n            RECORD_LAYER_reset_read_sequence(&s->rlayer);\n            return 1;\n        }\n        al = SSL_AD_DECRYPTION_FAILED;\n        SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);\n        goto f_err;\n    }\n#ifdef SSL_DEBUG\n    printf("dec %"OSSLzu"\\n", rr[0].length);\n    {\n        size_t z;\n        for (z = 0; z < rr[0].length; z++)\n            printf("%02X%c", rr[0].data[z], ((z + 1) % 16) ? \' \' : \'\\n\');\n    }\n    printf("\\n");\n#endif\n    if ((sess != NULL) &&\n        (s->enc_read_ctx != NULL) &&\n        (!SSL_READ_ETM(s) && EVP_MD_CTX_md(s->read_hash) != NULL)) {\n        unsigned char *mac = NULL;\n        unsigned char mac_tmp[EVP_MAX_MD_SIZE];\n        mac_size = EVP_MD_CTX_size(s->read_hash);\n        if (!ossl_assert(mac_size <= EVP_MAX_MD_SIZE)) {\n            al = SSL_AD_INTERNAL_ERROR;\n            SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);\n            goto f_err;\n        }\n        for (j = 0; j < num_recs; j++) {\n            thisrr = &rr[j];\n            if (thisrr->orig_len < mac_size ||\n                (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&\n                 thisrr->orig_len < mac_size + 1)) {\n                al = SSL_AD_DECODE_ERROR;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_LENGTH_TOO_SHORT);\n                goto f_err;\n            }\n            if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE) {\n                mac = mac_tmp;\n                if (!ssl3_cbc_copy_mac(mac_tmp, thisrr, mac_size)) {\n                    al = SSL_AD_INTERNAL_ERROR;\n                    SSLerr(SSL_F_SSL3_GET_RECORD, ERR_R_INTERNAL_ERROR);\n                    goto f_err;\n                }\n                thisrr->length -= mac_size;\n            } else {\n                thisrr->length -= mac_size;\n                mac = &thisrr->data[thisrr->length];\n            }\n            i = s->method->ssl3_enc->mac(s, thisrr, md, 0   );\n            if (i == 0 || mac == NULL\n                || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0)\n                enc_err = -1;\n            if (thisrr->length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size)\n                enc_err = -1;\n        }\n    }\n    if (enc_err < 0) {\n        if (num_recs == 1 && ossl_statem_skip_early_data(s)) {\n            if (!early_data_count_ok(s, first_rec_len,\n                                     EARLY_DATA_CIPHERTEXT_OVERHEAD, &al))\n                goto f_err;\n            thisrr = &rr[0];\n            thisrr->length = 0;\n            thisrr->read = 1;\n            RECORD_LAYER_set_numrpipes(&s->rlayer, 1);\n            RECORD_LAYER_reset_read_sequence(&s->rlayer);\n            return 1;\n        }\n        al = SSL_AD_BAD_RECORD_MAC;\n        SSLerr(SSL_F_SSL3_GET_RECORD,\n               SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);\n        goto f_err;\n    }\n    for (j = 0; j < num_recs; j++) {\n        thisrr = &rr[j];\n        if (s->expand != NULL) {\n            if (thisrr->length > SSL3_RT_MAX_COMPRESSED_LENGTH) {\n                al = SSL_AD_RECORD_OVERFLOW;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_COMPRESSED_LENGTH_TOO_LONG);\n                goto f_err;\n            }\n            if (!ssl3_do_uncompress(s, thisrr)) {\n                al = SSL_AD_DECOMPRESSION_FAILURE;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_DECOMPRESSION);\n                goto f_err;\n            }\n        }\n        if (SSL_IS_TLS13(s) && s->enc_read_ctx != NULL) {\n            size_t end;\n            if (thisrr->length == 0\n                    || thisrr->type != SSL3_RT_APPLICATION_DATA) {\n                al = SSL_AD_UNEXPECTED_MESSAGE;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_RECORD_TYPE);\n                goto f_err;\n            }\n            for (end = thisrr->length - 1; end > 0 && thisrr->data[end] == 0;\n                 end--)\n                continue;\n            thisrr->length = end;\n            thisrr->type = thisrr->data[end];\n            if (thisrr->type != SSL3_RT_APPLICATION_DATA\n                    && thisrr->type != SSL3_RT_ALERT\n                    && thisrr->type != SSL3_RT_HANDSHAKE) {\n                al = SSL_AD_UNEXPECTED_MESSAGE;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_RECORD_TYPE);\n                goto f_err;\n            }\n            if (s->msg_callback)\n                s->msg_callback(0, s->version, SSL3_RT_INNER_CONTENT_TYPE,\n                                &thisrr->data[end], 1, s, s->msg_callback_arg);\n        }\n        if (SSL_IS_TLS13(s)\n                && (thisrr->type == SSL3_RT_HANDSHAKE\n                    || thisrr->type == SSL3_RT_ALERT)\n                && thisrr->length == 0) {\n            al = SSL_AD_UNEXPECTED_MESSAGE;\n            SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_BAD_LENGTH);\n            goto f_err;\n        }\n        if (thisrr->length > SSL3_RT_MAX_PLAIN_LENGTH) {\n            al = SSL_AD_RECORD_OVERFLOW;\n            SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_DATA_LENGTH_TOO_LONG);\n            goto f_err;\n        }\n        thisrr->off = 0;\n        if (thisrr->length == 0) {\n            RECORD_LAYER_inc_empty_record_count(&s->rlayer);\n            if (RECORD_LAYER_get_empty_record_count(&s->rlayer)\n                > MAX_EMPTY_RECORDS) {\n                al = SSL_AD_UNEXPECTED_MESSAGE;\n                SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_RECORD_TOO_SMALL);\n                goto f_err;\n            }\n        } else {\n            RECORD_LAYER_reset_empty_record_count(&s->rlayer);\n        }\n    }\n    if (s->early_data_state == SSL_EARLY_DATA_READING) {\n        thisrr = &rr[0];\n        if (thisrr->type == SSL3_RT_APPLICATION_DATA\n                && !early_data_count_ok(s, thisrr->length, 0, &al))\n            goto f_err;\n    }\n    RECORD_LAYER_set_numrpipes(&s->rlayer, num_recs);\n    return 1;\n f_err:\n    ssl3_send_alert(s, SSL3_AL_FATAL, al);\n err:\n    return ret;\n}', 'int ssl3_read_n(SSL *s, size_t n, size_t max, int extend, int clearold,\n                size_t *readbytes)\n{\n    size_t len, left, align = 0;\n    unsigned char *pkt;\n    SSL3_BUFFER *rb;\n    if (n == 0)\n        return 0;\n    rb = &s->rlayer.rbuf;\n    if (rb->buf == NULL)\n        if (!ssl3_setup_read_buffer(s))\n            return -1;\n    left = rb->left;\n#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0\n    align = (size_t)rb->buf + SSL3_RT_HEADER_LENGTH;\n    align = SSL3_ALIGN_PAYLOAD - 1 - ((align - 1) % SSL3_ALIGN_PAYLOAD);\n#endif\n    if (!extend) {\n        if (left == 0)\n            rb->offset = align;\n        else if (align != 0 && left >= SSL3_RT_HEADER_LENGTH) {\n            pkt = rb->buf + rb->offset;\n            if (pkt[0] == SSL3_RT_APPLICATION_DATA\n                && (pkt[3] << 8 | pkt[4]) >= 128) {\n                memmove(rb->buf + align, pkt, left);\n                rb->offset = align;\n            }\n        }\n        s->rlayer.packet = rb->buf + rb->offset;\n        s->rlayer.packet_length = 0;\n    }\n    len = s->rlayer.packet_length;\n    pkt = rb->buf + align;\n    if (s->rlayer.packet != pkt && clearold == 1) {\n        memmove(pkt, s->rlayer.packet, len + left);\n        s->rlayer.packet = pkt;\n        rb->offset = len + align;\n    }\n    if (SSL_IS_DTLS(s)) {\n        if (left == 0 && extend)\n            return 0;\n        if (left > 0 && n > left)\n            n = left;\n    }\n    if (left >= n) {\n        s->rlayer.packet_length += n;\n        rb->left = left - n;\n        rb->offset += n;\n        *readbytes = n;\n        return 1;\n    }\n    if (n > rb->len - rb->offset) {\n        SSLerr(SSL_F_SSL3_READ_N, ERR_R_INTERNAL_ERROR);\n        return -1;\n    }\n    if (!s->rlayer.read_ahead && !SSL_IS_DTLS(s))\n        max = n;\n    else {\n        if (max < n)\n            max = n;\n        if (max > rb->len - rb->offset)\n            max = rb->len - rb->offset;\n    }\n    while (left < n) {\n        size_t bioread = 0;\n        int ret;\n        clear_sys_error();\n        if (s->rbio != NULL) {\n            s->rwstate = SSL_READING;\n            ret = BIO_read(s->rbio, pkt + len + left, max - left);\n            if (ret >= 0)\n                bioread = ret;\n        } else {\n            SSLerr(SSL_F_SSL3_READ_N, SSL_R_READ_BIO_NOT_SET);\n            ret = -1;\n        }\n        if (ret <= 0) {\n            rb->left = left;\n            if (s->mode & SSL_MODE_RELEASE_BUFFERS && !SSL_IS_DTLS(s))\n                if (len + left == 0)\n                    ssl3_release_read_buffer(s);\n            return ret;\n        }\n        left += bioread;\n        if (SSL_IS_DTLS(s)) {\n            if (n > left)\n                n = left;\n        }\n    }\n    rb->offset += n;\n    rb->left = left - n;\n    s->rlayer.packet_length += n;\n    s->rwstate = SSL_NOTHING;\n    *readbytes = n;\n    return 1;\n}']