1 files changed, 687 insertions, 774 deletions

diff --git a/src/lib/libssl/d1_pkt.c b/src/lib/libssl/d1_pkt.c
index 52f7fc022f..30fe8460fb 100644
--- a/src/lib/libssl/d1_pkt.c
+++ b/src/lib/libssl/d1_pkt.c
@@ -122,107 +122,120 @@
 #include <openssl/rand.h>
 
 /* mod 128 saturating subtract of two 64-bit values in big-endian order */
-static int satsub64be(const unsigned char *v1,const unsigned char *v2)
-{       int ret,sat,brw,i;
-
-        if (sizeof(long) == 8) do
-        {       const union { long one; char little; } is_endian = {1};
-                long l;
-
-                if (is_endian.little)                   break;
-                /* not reached on little-endians */
-                /* following test is redundant, because input is
-                 * always aligned, but I take no chances... */
-                if (((size_t)v1|(size_t)v2)&0x7)        break;
-
-                l  = *((long *)v1);
-                l -= *((long *)v2);
-                if (l>128)              return 128;
-                else if (l<-128)        return -128;
-                else                    return (int)l;
-        } while (0);
-
-        ret = (int)v1[7]-(int)v2[7];
+static int
+satsub64be(const unsigned char *v1, const unsigned char *v2)
+{
+        int ret, sat, brw, i;
+
+        if (sizeof(long) == 8)
+                do {
+                        const union {
+                                long one;
+                                char little;
+                        } is_endian = {1};
+                        long l;
+
+                        if (is_endian.little)
+                                break;
+                        /* not reached on little-endians */
+                        /* following test is redundant, because input is
+                         * always aligned, but I take no chances... */
+                        if (((size_t)v1 | (size_t)v2) & 0x7)
+                                break;
+
+                        l  = *((long *)v1);
+                        l -= *((long *)v2);
+                        if (l > 128)
+                                return 128;
+                        else if (l<-128)
+                                return -128;
+                        else
+                                return (int)l;
+                } while (0);
+
+        ret = (int)v1[7] - (int)v2[7];
         sat = 0;
-        brw = ret>>8;   /* brw is either 0 or -1 */
-        if (ret & 0x80)
-        {       for (i=6;i>=0;i--)
-                {       brw += (int)v1[i]-(int)v2[i];
+        brw = ret >> 8; /* brw is either 0 or -1 */
+        if (ret & 0x80) {
+                for (i = 6; i >= 0; i--) {
+                        brw += (int)v1[i]-(int)v2[i];
                         sat |= ~brw;
                         brw >>= 8;
                 }
-        }
-        else
-        {       for (i=6;i>=0;i--)
-                {       brw += (int)v1[i]-(int)v2[i];
+        } else {
+                for (i = 6; i >= 0; i--) {
+                        brw += (int)v1[i]-(int)v2[i];
                         sat |= brw;
                         brw >>= 8;
                 }
         }
         brw <<= 8;      /* brw is either 0 or -256 */
 
-        if (sat&0xff)   return brw | 0x80;
-        else            return brw + (ret&0xFF);
+        if (sat & 0xff)
+                return brw | 0x80;
+        else
+                return brw + (ret & 0xFF);
 }
 
-static int have_handshake_fragment(SSL *s, int type, unsigned char *buf, 
-        int len, int peek);
+static int have_handshake_fragment(SSL *s, int type, unsigned char *buf,
+    int len, int peek);
 static int dtls1_record_replay_check(SSL *s, DTLS1_BITMAP *bitmap);
 static void dtls1_record_bitmap_update(SSL *s, DTLS1_BITMAP *bitmap);
-static DTLS1_BITMAP *dtls1_get_bitmap(SSL *s, SSL3_RECORD *rr, 
+static DTLS1_BITMAP *dtls1_get_bitmap(SSL *s, SSL3_RECORD *rr,
     unsigned int *is_next_epoch);
 #if 0
 static int dtls1_record_needs_buffering(SSL *s, SSL3_RECORD *rr,
-        unsigned short *priority, unsigned long *offset);
+    unsigned short *priority, unsigned long *offset);
 #endif
 static int dtls1_buffer_record(SSL *s, record_pqueue *q,
-        unsigned char *priority);
+    unsigned char *priority);
 static int dtls1_process_record(SSL *s);
 
 /* copy buffered record into SSL structure */
 static int
 dtls1_copy_record(SSL *s, pitem *item)
-    {
-    DTLS1_RECORD_DATA *rdata;
-
-    rdata = (DTLS1_RECORD_DATA *)item->data;
-    
-    if (s->s3->rbuf.buf != NULL)
-        OPENSSL_free(s->s3->rbuf.buf);
-    
-    s->packet = rdata->packet;
-    s->packet_length = rdata->packet_length;
-    memcpy(&(s->s3->rbuf), &(rdata->rbuf), sizeof(SSL3_BUFFER));
-    memcpy(&(s->s3->rrec), &(rdata->rrec), sizeof(SSL3_RECORD));
-        
+{
+        DTLS1_RECORD_DATA *rdata;
+
+        rdata = (DTLS1_RECORD_DATA *)item->data;
+
+        if (s->s3->rbuf.buf != NULL)
+                OPENSSL_free(s->s3->rbuf.buf);
+
+        s->packet = rdata->packet;
+        s->packet_length = rdata->packet_length;
+        memcpy(&(s->s3->rbuf), &(rdata->rbuf), sizeof(SSL3_BUFFER));
+        memcpy(&(s->s3->rrec), &(rdata->rrec), sizeof(SSL3_RECORD));
+
         /* Set proper sequence number for mac calculation */
         memcpy(&(s->s3->read_sequence[2]), &(rdata->packet[5]), 6);
-    
-    return(1);
-    }
+
+        return (1);
+}
 
 
 static int
 dtls1_buffer_record(SSL *s, record_pqueue *queue, unsigned char *priority)
-        {
+{
         DTLS1_RECORD_DATA *rdata;
         pitem *item;
 
         /* Limit the size of the queue to prevent DOS attacks */
         if (pqueue_size(queue->q) >= 100)
                 return 0;
-                
+
         rdata = OPENSSL_malloc(sizeof(DTLS1_RECORD_DATA));
         item = pitem_new(priority, rdata);
-        if (rdata == NULL || item == NULL)
-                {
-                if (rdata != NULL) OPENSSL_free(rdata);
-                if (item != NULL) pitem_free(item);
-                
+        if (rdata == NULL || item == NULL) {
+                if (rdata != NULL)
+                        OPENSSL_free(rdata);
+                if (item != NULL)
+                        pitem_free(item);
+
                 SSLerr(SSL_F_DTLS1_BUFFER_RECORD, ERR_R_INTERNAL_ERROR);
-                return(0);
-                }
-        
+                return (0);
+        }
+
         rdata->packet = s->packet;
         rdata->packet_length = s->packet_length;
         memcpy(&(rdata->rbuf), &(s->s3->rbuf), sizeof(SSL3_BUFFER));
@@ -233,54 +246,51 @@ dtls1_buffer_record(SSL *s, record_pqueue *queue, unsigned char *priority)
 #ifndef OPENSSL_NO_SCTP
         /* Store bio_dgram_sctp_rcvinfo struct */
         if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
-            (s->state == SSL3_ST_SR_FINISHED_A || s->state == SSL3_ST_CR_FINISHED_A)) {
+                (s->state == SSL3_ST_SR_FINISHED_A || s->state == SSL3_ST_CR_FINISHED_A)) {
                 BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SCTP_GET_RCVINFO, sizeof(rdata->recordinfo), &rdata->recordinfo);
         }
 #endif
 
         /* insert should not fail, since duplicates are dropped */
-        if (pqueue_insert(queue->q, item) == NULL)
-                {
+        if (pqueue_insert(queue->q, item) == NULL) {
                 OPENSSL_free(rdata);
                 pitem_free(item);
-                return(0);
-                }
+                return (0);
+        }
 
         s->packet = NULL;
         s->packet_length = 0;
         memset(&(s->s3->rbuf), 0, sizeof(SSL3_BUFFER));
         memset(&(s->s3->rrec), 0, sizeof(SSL3_RECORD));
-        
-        if (!ssl3_setup_buffers(s))
-                {
+
+        if (!ssl3_setup_buffers(s)) {
                 SSLerr(SSL_F_DTLS1_BUFFER_RECORD, ERR_R_INTERNAL_ERROR);
                 OPENSSL_free(rdata);
                 pitem_free(item);
-                return(0);
-                }
-        
-        return(1);
+                return (0);
         }
 
+        return (1);
+}
+
 
 static int
 dtls1_retrieve_buffered_record(SSL *s, record_pqueue *queue)
-    {
-    pitem *item;
+{
+        pitem *item;
 
-    item = pqueue_pop(queue->q);
-    if (item)
-        {
-        dtls1_copy_record(s, item);
+        item = pqueue_pop(queue->q);
+        if (item) {
+                dtls1_copy_record(s, item);
 
-        OPENSSL_free(item->data);
+                OPENSSL_free(item->data);
                 pitem_free(item);
 
-        return(1);
-        }
+                return (1);
+        }
 
-    return(0);
-    }
+        return (0);
+}
 
 
 /* retrieve a buffered record that belongs to the new epoch, i.e., not processed 
@@ -296,98 +306,96 @@ dtls1_retrieve_buffered_record(SSL *s, record_pqueue *queue)
 
 static int
 dtls1_process_buffered_records(SSL *s)
-    {
-    pitem *item;
-    
-    item = pqueue_peek(s->d1->unprocessed_rcds.q);
-    if (item)
-        {
-        /* Check if epoch is current. */
-        if (s->d1->unprocessed_rcds.epoch != s->d1->r_epoch)
-            return(1);  /* Nothing to do. */
-        
-        /* Process all the records. */
-        while (pqueue_peek(s->d1->unprocessed_rcds.q))
-            {
-            dtls1_get_unprocessed_record(s);
-            if ( ! dtls1_process_record(s))
-                return(0);
-            dtls1_buffer_record(s, &(s->d1->processed_rcds), 
-                s->s3->rrec.seq_num);
-            }
-        }
+{
+        pitem *item;
+
+        item = pqueue_peek(s->d1->unprocessed_rcds.q);
+        if (item) {
+                /* Check if epoch is current. */
+                if (s->d1->unprocessed_rcds.epoch != s->d1->r_epoch)
+                        return (1);
+                /* Nothing to do. */
+
+                /* Process all the records. */
+                while (pqueue_peek(s->d1->unprocessed_rcds.q)) {
+                        dtls1_get_unprocessed_record(s);
+                        if (! dtls1_process_record(s))
+                                return (0);
+                        dtls1_buffer_record(s, &(s->d1->processed_rcds),
+                        s->s3->rrec.seq_num);
+                }
+        }
 
     /* sync epoch numbers once all the unprocessed records 
      * have been processed */
-    s->d1->processed_rcds.epoch = s->d1->r_epoch;
-    s->d1->unprocessed_rcds.epoch = s->d1->r_epoch + 1;
+        s->d1->processed_rcds.epoch = s->d1->r_epoch;
+        s->d1->unprocessed_rcds.epoch = s->d1->r_epoch + 1;
 
-    return(1);
-    }
+        return (1);
+}
 
 
 #if 0
 
 static int
 dtls1_get_buffered_record(SSL *s)
-        {
+{
         pitem *item;
-        PQ_64BIT priority = 
-                (((PQ_64BIT)s->d1->handshake_read_seq) << 32) | 
-                ((PQ_64BIT)s->d1->r_msg_hdr.frag_off);
-        
-        if ( ! SSL_in_init(s))  /* if we're not (re)negotiating, 
-                                                           nothing buffered */
+        PQ_64BIT priority =
+            (((PQ_64BIT)s->d1->handshake_read_seq) << 32) |
+            ((PQ_64BIT)s->d1->r_msg_hdr.frag_off);
+
+        if (!SSL_in_init(s))  /* if we're not (re)negotiating,
+                                   nothing buffered */
                 return 0;
 
 
         item = pqueue_peek(s->d1->rcvd_records);
-        if (item && item->priority == priority)
-                {
+        if (item && item->priority == priority) {
                 /* Check if we've received the record of interest.  It must be
                  * a handshake record, since data records as passed up without
                  * buffering */
                 DTLS1_RECORD_DATA *rdata;
                 item = pqueue_pop(s->d1->rcvd_records);
                 rdata = (DTLS1_RECORD_DATA *)item->data;
-                
+
                 if (s->s3->rbuf.buf != NULL)
                         OPENSSL_free(s->s3->rbuf.buf);
-                
+
                 s->packet = rdata->packet;
                 s->packet_length = rdata->packet_length;
                 memcpy(&(s->s3->rbuf), &(rdata->rbuf), sizeof(SSL3_BUFFER));
                 memcpy(&(s->s3->rrec), &(rdata->rrec), sizeof(SSL3_RECORD));
-                
+
                 OPENSSL_free(item->data);
                 pitem_free(item);
-                
+
                 /* s->d1->next_expected_seq_num++; */
-                return(1);
-                }
-        
-        return 0;
+                return (1);
         }
 
+        return 0;
+}
+
 #endif
 
 static int
 dtls1_process_record(SSL *s)
 {
-        int i,al;
+        int i, al;
         int enc_err;
         SSL_SESSION *sess;
         SSL3_RECORD *rr;
         unsigned int mac_size, orig_len;
         unsigned char md[EVP_MAX_MD_SIZE];
 
-        rr= &(s->s3->rrec);
+        rr = &(s->s3->rrec);
         sess = s->session;
 
         /* At this point, s->packet_length == SSL3_RT_HEADER_LNGTH + rr->length,
          * and we have that many bytes in s->packet
          */
-        rr->input= &(s->packet[DTLS1_RT_HEADER_LENGTH]);
+        rr->input = &(s->packet[DTLS1_RT_HEADER_LENGTH]);
 
         /* ok, we can now read from 's->packet' data into 'rr'
          * rr->input points at rr->length bytes, which
@@ -400,48 +408,44 @@ dtls1_process_record(SSL *s)
          * rr->length bytes of encrypted compressed stuff. */
 
         /* check is not needed I believe */
-        if (rr->length > SSL3_RT_MAX_ENCRYPTED_LENGTH)
-                {
-                al=SSL_AD_RECORD_OVERFLOW;
-                SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
+        if (rr->length > SSL3_RT_MAX_ENCRYPTED_LENGTH) {
+                al = SSL_AD_RECORD_OVERFLOW;
+                SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
                 goto f_err;
-                }
+        }
 
         /* decrypt in place in 'rr->input' */
-        rr->data=rr->input;
+        rr->data = rr->input;
 
-        enc_err = s->method->ssl3_enc->enc(s,0);
+        enc_err = s->method->ssl3_enc->enc(s, 0);
         /* enc_err is:
          *    0: (in non-constant time) if the record is publically invalid.
          *    1: if the padding is valid
          *    -1: if the padding is invalid */
-        if (enc_err == 0)
-                {
+        if (enc_err == 0) {
                 /* For DTLS we simply ignore bad packets. */
                 rr->length = 0;
                 s->packet_length = 0;
                 goto err;
-                }
+        }
 
 #ifdef TLS_DEBUG
-printf("dec %d\n",rr->length);
-{ unsigned int z; for (z=0; z<rr->length; z++) printf("%02X%c",rr->data[z],((z+1)%16)?' ':'\n'); }
-printf("\n");
+        printf("dec %d\n", rr->length);
+        { unsigned int z; for (z = 0; z<rr->length; z++) printf("%02X%c", rr->data[z],((z+1)%16)?' ':'\n'); }
+        printf("\n");
 #endif
 
         /* r->length is now the compressed data plus mac */
-        if ((sess != NULL) &&
-            (s->enc_read_ctx != NULL) &&
-            (EVP_MD_CTX_md(s->read_hash) != NULL))
-                {
+        if ((sess != NULL) && (s->enc_read_ctx != NULL) &&
+            (EVP_MD_CTX_md(s->read_hash) != NULL)) {
                 /* s->read_hash != NULL => mac_size != -1 */
                 unsigned char *mac = NULL;
                 unsigned char mac_tmp[EVP_MAX_MD_SIZE];
-                mac_size=EVP_MD_CTX_size(s->read_hash);
+                mac_size = EVP_MD_CTX_size(s->read_hash);
                 OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);
 
                 /* kludge: *_cbc_remove_padding passes padding length in rr->type */
-                orig_len = rr->length+((unsigned int)rr->type>>8);
+                orig_len = rr->length + ((unsigned int)rr->type >> 8);
 
                 /* orig_len is the length of the record before any padding was
                  * removed. This is public information, as is the MAC in use,
@@ -449,17 +453,15 @@ printf("\n");
                  * amount of time if it's too short to possibly contain a MAC.
                  */
                 if (orig_len < mac_size ||
-                    /* CBC records must have a padding length byte too. */
+                        /* CBC records must have a padding length byte too. */
                     (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
-                     orig_len < mac_size+1))
-                        {
-                        al=SSL_AD_DECODE_ERROR;
-                        SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_LENGTH_TOO_SHORT);
+                    orig_len < mac_size + 1)) {
+                        al = SSL_AD_DECODE_ERROR;
+                        SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_LENGTH_TOO_SHORT);
                         goto f_err;
-                        }
+                }
 
-                if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE)
-                        {
+                if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE) {
                         /* We update the length so that the TLS header bytes
                          * can be constructed correctly but we need to extract
                          * the MAC in constant time from within the record,
@@ -468,56 +470,49 @@ printf("\n");
                         mac = mac_tmp;
                         ssl3_cbc_copy_mac(mac_tmp, rr, mac_size, orig_len);
                         rr->length -= mac_size;
-                        }
-                else
-                        {
+                } else {
                         /* In this case there's no padding, so |orig_len|
                          * equals |rec->length| and we checked that there's
                          * enough bytes for |mac_size| above. */
                         rr->length -= mac_size;
                         mac = &rr->data[rr->length];
-                        }
+                }
 
-                i=s->method->ssl3_enc->mac(s,md,0 /* not send */);
+                i = s->method->ssl3_enc->mac(s, md, 0 /* not send */);
                 if (i < 0 || mac == NULL || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0)
                         enc_err = -1;
-                if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH+mac_size)
+                if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size)
                         enc_err = -1;
-                }
+        }
 
-        if (enc_err < 0)
-                {
+        if (enc_err < 0) {
                 /* decryption failed, silently discard message */
                 rr->length = 0;
                 s->packet_length = 0;
                 goto err;
-                }
+        }
 
         /* r->length is now just compressed */
-        if (s->expand != NULL)
-                {
-                if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH)
-                        {
-                        al=SSL_AD_RECORD_OVERFLOW;
-                        SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_COMPRESSED_LENGTH_TOO_LONG);
+        if (s->expand != NULL) {
+                if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH) {
+                        al = SSL_AD_RECORD_OVERFLOW;
+                        SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_COMPRESSED_LENGTH_TOO_LONG);
                         goto f_err;
-                        }
-                if (!ssl3_do_uncompress(s))
-                        {
-                        al=SSL_AD_DECOMPRESSION_FAILURE;
-                        SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_BAD_DECOMPRESSION);
+                }
+                if (!ssl3_do_uncompress(s)) {
+                        al = SSL_AD_DECOMPRESSION_FAILURE;
+                        SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_BAD_DECOMPRESSION);
                         goto f_err;
-                        }
                 }
+        }
 
-        if (rr->length > SSL3_RT_MAX_PLAIN_LENGTH)
-                {
-                al=SSL_AD_RECORD_OVERFLOW;
-                SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_DATA_LENGTH_TOO_LONG);
+        if (rr->length > SSL3_RT_MAX_PLAIN_LENGTH) {
+                al = SSL_AD_RECORD_OVERFLOW;
+                SSLerr(SSL_F_DTLS1_PROCESS_RECORD, SSL_R_DATA_LENGTH_TOO_LONG);
                 goto f_err;
-                }
+        }
 
-        rr->off=0;
+        rr->off = 0;
         /* So at this point the following is true
          * ssl->s3->rrec.type   is the type of record
          * ssl->s3->rrec.length == number of bytes in record
@@ -527,14 +522,14 @@ printf("\n");
          */
 
         /* we have pulled in a full packet so zero things */
-        s->packet_length=0;
+        s->packet_length = 0;
         dtls1_record_bitmap_update(s, &(s->d1->bitmap));/* Mark receipt of record. */
-        return(1);
+        return (1);
 
 f_err:
-        ssl3_send_alert(s,SSL3_AL_FATAL,al);
+        ssl3_send_alert(s, SSL3_AL_FATAL, al);
 err:
-        return(0);
+        return (0);
 }
 
 
@@ -547,17 +542,18 @@ err:
  * ssl->s3->rrec.length, - number of bytes
  */
 /* used only by dtls1_read_bytes */
-int dtls1_get_record(SSL *s)
-        {
-        int ssl_major,ssl_minor;
-        int i,n;
+int
+dtls1_get_record(SSL *s)
+{
+        int ssl_major, ssl_minor;
+        int i, n;
         SSL3_RECORD *rr;
         unsigned char *p = NULL;
         unsigned short version;
         DTLS1_BITMAP *bitmap;
         unsigned int is_next_epoch;
 
-        rr= &(s->s3->rrec);
+        rr = &(s->s3->rrec);
 
         /* The epoch may have changed.  If so, process all the
          * pending records.  This is a non-blocking operation. */
@@ -570,104 +566,98 @@ int dtls1_get_record(SSL *s)
         /* get something from the wire */
 again:
         /* check if we have the header */
-        if (    (s->rstate != SSL_ST_READ_BODY) ||
-                (s->packet_length < DTLS1_RT_HEADER_LENGTH)) 
-                {
-                n=ssl3_read_n(s, DTLS1_RT_HEADER_LENGTH, s->s3->rbuf.len, 0);
+        if ((s->rstate != SSL_ST_READ_BODY) ||
+                (s->packet_length < DTLS1_RT_HEADER_LENGTH)) {
+                n = ssl3_read_n(s, DTLS1_RT_HEADER_LENGTH, s->s3->rbuf.len, 0);
                 /* read timeout is handled by dtls1_read_bytes */
-                if (n <= 0) return(n); /* error or non-blocking */
+                if (n <= 0)
+                        return(n); /* error or non-blocking */
 
                 /* this packet contained a partial record, dump it */
-                if (s->packet_length != DTLS1_RT_HEADER_LENGTH)
-                        {
+                if (s->packet_length != DTLS1_RT_HEADER_LENGTH) {
                         s->packet_length = 0;
                         goto again;
-                        }
+                }
 
-                s->rstate=SSL_ST_READ_BODY;
+                s->rstate = SSL_ST_READ_BODY;
 
-                p=s->packet;
+                p = s->packet;
 
                 /* Pull apart the header into the DTLS1_RECORD */
                 rr->type= *(p++);
                 ssl_major= *(p++);
                 ssl_minor= *(p++);
-                version=(ssl_major<<8)|ssl_minor;
+                version = (ssl_major << 8)|ssl_minor;
 
-                /* sequence number is 64 bits, with top 2 bytes = epoch */ 
-                n2s(p,rr->epoch);
+                /* sequence number is 64 bits, with top 2 bytes = epoch */
+                n2s(p, rr->epoch);
 
                 memcpy(&(s->s3->read_sequence[2]), p, 6);
-                p+=6;
+                p += 6;
 
-                n2s(p,rr->length);
+                n2s(p, rr->length);
 
                 /* Lets check version */
-                if (!s->first_packet)
-                        {
-                        if (version != s->version)
-                                {
+                if (!s->first_packet) {
+                        if (version != s->version) {
                                 /* unexpected version, silently discard */
                                 rr->length = 0;
                                 s->packet_length = 0;
                                 goto again;
-                                }
                         }
+                }
 
-                if ((version & 0xff00) != (s->version & 0xff00))
-                        {
+                if ((version & 0xff00) != (s->version & 0xff00)) {
                         /* wrong version, silently discard record */
                         rr->length = 0;
                         s->packet_length = 0;
                         goto again;
-                        }
+                }
 
-                if (rr->length > SSL3_RT_MAX_ENCRYPTED_LENGTH)
-                        {
+                if (rr->length > SSL3_RT_MAX_ENCRYPTED_LENGTH) {
                         /* record too long, silently discard it */
                         rr->length = 0;
                         s->packet_length = 0;
                         goto again;
-                        }
+                }
 
                 /* now s->rstate == SSL_ST_READ_BODY */
-                }
+        }
 
         /* s->rstate == SSL_ST_READ_BODY, get and decode the data */
 
-        if (rr->length > s->packet_length-DTLS1_RT_HEADER_LENGTH)
-                {
+        if (rr->length > s->packet_length - DTLS1_RT_HEADER_LENGTH) {
                 /* now s->packet_length == DTLS1_RT_HEADER_LENGTH */
-                i=rr->length;
-                n=ssl3_read_n(s,i,i,1);
-                if (n <= 0) return(n); /* error or non-blocking io */
+                i = rr->length;
+                n = ssl3_read_n(s, i, i, 1);
+                if (n <= 0)
+                        return(n); /* error or non-blocking io */
 
                 /* this packet contained a partial record, dump it */
-                if ( n != i)
-                        {
+                if (n != i) {
                         rr->length = 0;
                         s->packet_length = 0;
                         goto again;
-                        }
+                }
 
                 /* now n == rr->length,
                  * and s->packet_length == DTLS1_RT_HEADER_LENGTH + rr->length */
-                }
-        s->rstate=SSL_ST_READ_HEADER; /* set state for later operations */
+        }
+        s->rstate = SSL_ST_READ_HEADER; /* set state for later operations */
 
         /* match epochs.  NULL means the packet is dropped on the floor */
         bitmap = dtls1_get_bitmap(s, rr, &is_next_epoch);
-        if ( bitmap == NULL)
-                {
+        if (bitmap == NULL) {
                 rr->length = 0;
-                s->packet_length = 0;  /* dump this record */
-                goto again;   /* get another record */
-                }
+                s->packet_length = 0;
+                /* dump this record */
+                goto again;
+                /* get another record */
+        }
 
 #ifndef OPENSSL_NO_SCTP
         /* Only do replay check if no SCTP bio */
-        if (!BIO_dgram_is_sctp(SSL_get_rbio(s)))
-                {
+        if (!BIO_dgram_is_sctp(SSL_get_rbio(s))) {
 #endif
                 /* Check whether this is a repeat, or aged record.
                  * Don't check if we're listening and this message is
@@ -677,45 +667,45 @@ again:
                  */
                 if (!(s->d1->listen && rr->type == SSL3_RT_HANDSHAKE &&
                     *p == SSL3_MT_CLIENT_HELLO) &&
-                    !dtls1_record_replay_check(s, bitmap))
-                        {
+                    !dtls1_record_replay_check(s, bitmap)) {
                         rr->length = 0;
                         s->packet_length=0; /* dump this record */
-                        goto again;     /* get another record */
-                        }
+                        goto again;
+                        /* get another record */
+                }
 #ifndef OPENSSL_NO_SCTP
-                }
+        }
 #endif
 
         /* just read a 0 length packet */
-        if (rr->length == 0) goto again;
+        if (rr->length == 0)
+                goto again;
 
         /* If this record is from the next epoch (either HM or ALERT),
          * and a handshake is currently in progress, buffer it since it
          * cannot be processed at this time. However, do not buffer
          * anything while listening.
          */
-        if (is_next_epoch)
-                {
-                if ((SSL_in_init(s) || s->in_handshake) && !s->d1->listen)
-                        {
+        if (is_next_epoch) {
+                if ((SSL_in_init(s) || s->in_handshake) && !s->d1->listen) {
                         dtls1_buffer_record(s, &(s->d1->unprocessed_rcds), rr->seq_num);
-                        }
+                }
                 rr->length = 0;
                 s->packet_length = 0;
                 goto again;
-                }
+        }
 
-        if (!dtls1_process_record(s))
-                {
+        if (!dtls1_process_record(s)) {
                 rr->length = 0;
-                s->packet_length = 0;  /* dump this record */
-                goto again;   /* get another record */
-                }
+                s->packet_length = 0;
+                /* dump this record */
+                goto again;
+                /* get another record */
+        }
 
-        return(1);
+        return (1);
 
-        }
+}
 
 /* Return up to 'len' payload bytes received in 'type' records.
  * 'type' is one of the following:
@@ -744,28 +734,28 @@ again:
  *     Application data protocol
  *             none of our business
  */
-int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
-        {
-        int al,i,j,ret;
+int
+dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
+{
+        int al, i, j, ret;
         unsigned int n;
         SSL3_RECORD *rr;
-        void (*cb)(const SSL *ssl,int type2,int val)=NULL;
+        void (*cb)(const SSL *ssl, int type2, int val) = NULL;
 
         if (s->s3->rbuf.buf == NULL) /* Not initialized yet */
                 if (!ssl3_setup_buffers(s))
-                        return(-1);
+                        return (-1);
 
-    /* XXX: check what the second '&& type' is about */
-        if ((type && (type != SSL3_RT_APPLICATION_DATA) && 
-                (type != SSL3_RT_HANDSHAKE) && type) ||
-            (peek && (type != SSL3_RT_APPLICATION_DATA)))
-                {
+        /* XXX: check what the second '&& type' is about */
+        if ((type && (type != SSL3_RT_APPLICATION_DATA) &&
+            (type != SSL3_RT_HANDSHAKE) && type) ||
+            (peek && (type != SSL3_RT_APPLICATION_DATA))) {
                 SSLerr(SSL_F_DTLS1_READ_BYTES, ERR_R_INTERNAL_ERROR);
                 return -1;
-                }
+        }
 
         /* check whether there's a handshake message (client hello?) waiting */
-        if ( (ret = have_handshake_fragment(s, type, buf, len, peek)))
+        if ((ret = have_handshake_fragment(s, type, buf, len, peek)))
                 return ret;
 
         /* Now s->d1->handshake_fragment_len == 0 if type == SSL3_RT_HANDSHAKE. */
@@ -776,24 +766,25 @@ int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
          */
         if ((!s->in_handshake && SSL_in_init(s)) ||
             (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
-             (s->state == DTLS1_SCTP_ST_SR_READ_SOCK || s->state == DTLS1_SCTP_ST_CR_READ_SOCK) &&
-             s->s3->in_read_app_data != 2))
+            (s->state == DTLS1_SCTP_ST_SR_READ_SOCK ||
+            s->state == DTLS1_SCTP_ST_CR_READ_SOCK) &&
+            s->s3->in_read_app_data != 2))
 #else
         if (!s->in_handshake && SSL_in_init(s))
 #endif
-                {
+        {
                 /* type == SSL3_RT_APPLICATION_DATA */
-                i=s->handshake_func(s);
-                if (i < 0) return(i);
-                if (i == 0)
-                        {
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
-                        return(-1);
-                        }
+                i = s->handshake_func(s);
+                if (i < 0)
+                        return (i);
+                if (i == 0) {
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_SSL_HANDSHAKE_FAILURE);
+                        return (-1);
                 }
+        }
 
 start:
-        s->rwstate=SSL_NOTHING;
+        s->rwstate = SSL_NOTHING;
 
         /* s->s3->rrec.type         - is the type of record
          * s->s3->rrec.data,    - data
@@ -805,59 +796,52 @@ start:
          * so process data buffered during the last handshake
          * in advance, if any.
          */
-        if (s->state == SSL_ST_OK && rr->length == 0)
-                {
+        if (s->state == SSL_ST_OK && rr->length == 0) {
                 pitem *item;
                 item = pqueue_pop(s->d1->buffered_app_data.q);
-                if (item)
-                        {
+                if (item) {
 #ifndef OPENSSL_NO_SCTP
                         /* Restore bio_dgram_sctp_rcvinfo struct */
-                        if (BIO_dgram_is_sctp(SSL_get_rbio(s)))
-                                {
+                        if (BIO_dgram_is_sctp(SSL_get_rbio(s))) {
                                 DTLS1_RECORD_DATA *rdata = (DTLS1_RECORD_DATA *) item->data;
                                 BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SCTP_SET_RCVINFO, sizeof(rdata->recordinfo), &rdata->recordinfo);
-                                }
+                        }
 #endif
 
                         dtls1_copy_record(s, item);
 
                         OPENSSL_free(item->data);
                         pitem_free(item);
-                        }
                 }
+        }
 
         /* Check for timeout */
         if (dtls1_handle_timeout(s) > 0)
                 goto start;
 
         /* get new packet if necessary */
-        if ((rr->length == 0) || (s->rstate == SSL_ST_READ_BODY))
-                {
-                ret=dtls1_get_record(s);
-                if (ret <= 0) 
-                        {
+        if ((rr->length == 0) || (s->rstate == SSL_ST_READ_BODY)) {
+                ret = dtls1_get_record(s);
+                if (ret <= 0) {
                         ret = dtls1_read_failed(s, ret);
                         /* anything other than a timeout is an error */
-                        if (ret <= 0)  
-                                return(ret);
+                        if (ret <= 0)
+                                return (ret);
                         else
                                 goto start;
-                        }
                 }
+        }
 
-        if (s->d1->listen && rr->type != SSL3_RT_HANDSHAKE)
-                {
+        if (s->d1->listen && rr->type != SSL3_RT_HANDSHAKE) {
                 rr->length = 0;
                 goto start;
-                }
+        }
 
         /* we now have a packet which can be read and processed */
 
         if (s->s3->change_cipher_spec /* set when we receive ChangeCipherSpec,
                                        * reset by ssl3_get_finished */
-                && (rr->type != SSL3_RT_HANDSHAKE))
-                {
+            && (rr->type != SSL3_RT_HANDSHAKE)) {
                 /* We now have application data between CCS and Finished.
                  * Most likely the packets were reordered on their way, so
                  * buffer the application data for later processing rather
@@ -866,75 +850,71 @@ start:
                 dtls1_buffer_record(s, &(s->d1->buffered_app_data), rr->seq_num);
                 rr->length = 0;
                 goto start;
-                }
+        }
 
         /* If the other end has shut down, throw anything we read away
          * (even in 'peek' mode) */
-        if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
-                {
-                rr->length=0;
-                s->rwstate=SSL_NOTHING;
-                return(0);
-                }
+        if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
+                rr->length = 0;
+                s->rwstate = SSL_NOTHING;
+                return (0);
+        }
 
 
         if (type == rr->type) /* SSL3_RT_APPLICATION_DATA or SSL3_RT_HANDSHAKE */
-                {
+        {
                 /* make sure that we are not getting application data when we
                  * are doing a handshake for the first time */
                 if (SSL_in_init(s) && (type == SSL3_RT_APPLICATION_DATA) &&
-                        (s->enc_read_ctx == NULL))
-                        {
-                        al=SSL_AD_UNEXPECTED_MESSAGE;
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_APP_DATA_IN_HANDSHAKE);
+                        (s->enc_read_ctx == NULL)) {
+                        al = SSL_AD_UNEXPECTED_MESSAGE;
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_APP_DATA_IN_HANDSHAKE);
                         goto f_err;
-                        }
+                }
 
-                if (len <= 0) return(len);
+                if (len <= 0)
+                        return (len);
 
                 if ((unsigned int)len > rr->length)
                         n = rr->length;
                 else
                         n = (unsigned int)len;
 
-                memcpy(buf,&(rr->data[rr->off]),n);
-                if (!peek)
-                        {
-                        rr->length-=n;
-                        rr->off+=n;
-                        if (rr->length == 0)
-                                {
-                                s->rstate=SSL_ST_READ_HEADER;
-                                rr->off=0;
-                                }
+                memcpy(buf, &(rr->data[rr->off]), n);
+                if (!peek) {
+                        rr->length -= n;
+                        rr->off += n;
+                        if (rr->length == 0) {
+                                s->rstate = SSL_ST_READ_HEADER;
+                                rr->off = 0;
                         }
+                }
 
 #ifndef OPENSSL_NO_SCTP
-                        /* We were about to renegotiate but had to read
-                         * belated application data first, so retry.
-                         */
-                        if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
-                            rr->type == SSL3_RT_APPLICATION_DATA &&
-                            (s->state == DTLS1_SCTP_ST_SR_READ_SOCK || s->state == DTLS1_SCTP_ST_CR_READ_SOCK))
-                                {
-                                s->rwstate=SSL_READING;
-                                BIO_clear_retry_flags(SSL_get_rbio(s));
-                                BIO_set_retry_read(SSL_get_rbio(s));
-                                }
+                /* We were about to renegotiate but had to read
+                 * belated application data first, so retry.
+                 */
+                if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
+                    rr->type == SSL3_RT_APPLICATION_DATA &&
+                    (s->state == DTLS1_SCTP_ST_SR_READ_SOCK ||
+                    s->state == DTLS1_SCTP_ST_CR_READ_SOCK)) {
+                        s->rwstate = SSL_READING;
+                        BIO_clear_retry_flags(SSL_get_rbio(s));
+                        BIO_set_retry_read(SSL_get_rbio(s));
+                }
 
-                        /* We might had to delay a close_notify alert because
-                         * of reordered app data. If there was an alert and there
-                         * is no message to read anymore, finally set shutdown.
-                         */
-                        if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
-                            s->d1->shutdown_received && !BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s)))
-                                {
-                                s->shutdown |= SSL_RECEIVED_SHUTDOWN;
-                                return(0);
-                                }
-#endif                  
-                return(n);
+                /* We might had to delay a close_notify alert because
+                 * of reordered app data. If there was an alert and there
+                 * is no message to read anymore, finally set shutdown.
+                 */
+                if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
+                        s->d1->shutdown_received && !BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s))) {
+                        s->shutdown |= SSL_RECEIVED_SHUTDOWN;
+                        return (0);
                 }
+#endif                  
+                return (n);
+        }
 
 
         /* If we get here, then type != rr->type; if we have a handshake
@@ -943,65 +923,57 @@ start:
         /* In case of record types for which we have 'fragment' storage,
          * fill that so that we can process the data at a fixed place.
          */
-                {
+        {
                 unsigned int k, dest_maxlen = 0;
                 unsigned char *dest = NULL;
                 unsigned int *dest_len = NULL;
 
-                if (rr->type == SSL3_RT_HANDSHAKE)
-                        {
+                if (rr->type == SSL3_RT_HANDSHAKE) {
                         dest_maxlen = sizeof s->d1->handshake_fragment;
                         dest = s->d1->handshake_fragment;
                         dest_len = &s->d1->handshake_fragment_len;
-                        }
-                else if (rr->type == SSL3_RT_ALERT)
-                        {
+                } else if (rr->type == SSL3_RT_ALERT) {
                         dest_maxlen = sizeof(s->d1->alert_fragment);
                         dest = s->d1->alert_fragment;
                         dest_len = &s->d1->alert_fragment_len;
-                        }
+                }
 #ifndef OPENSSL_NO_HEARTBEATS
-                else if (rr->type == TLS1_RT_HEARTBEAT)
-                        {
+                else if (rr->type == TLS1_RT_HEARTBEAT) {
                         dtls1_process_heartbeat(s);
 
                         /* Exit and notify application to read again */
                         rr->length = 0;
-                        s->rwstate=SSL_READING;
+                        s->rwstate = SSL_READING;
                         BIO_clear_retry_flags(SSL_get_rbio(s));
                         BIO_set_retry_read(SSL_get_rbio(s));
-                        return(-1);
-                        }
+                        return (-1);
+                }
 #endif
                 /* else it's a CCS message, or application data or wrong */
-                else if (rr->type != SSL3_RT_CHANGE_CIPHER_SPEC)
-                        {
+                else if (rr->type != SSL3_RT_CHANGE_CIPHER_SPEC) {
                         /* Application data while renegotiating
                          * is allowed. Try again reading.
                          */
-                        if (rr->type == SSL3_RT_APPLICATION_DATA)
-                                {
+                        if (rr->type == SSL3_RT_APPLICATION_DATA) {
                                 BIO *bio;
-                                s->s3->in_read_app_data=2;
-                                bio=SSL_get_rbio(s);
-                                s->rwstate=SSL_READING;
+                                s->s3->in_read_app_data = 2;
+                                bio = SSL_get_rbio(s);
+                                s->rwstate = SSL_READING;
                                 BIO_clear_retry_flags(bio);
                                 BIO_set_retry_read(bio);
-                                return(-1);
-                                }
+                                return (-1);
+                        }
 
                         /* Not certain if this is the right error handling */
-                        al=SSL_AD_UNEXPECTED_MESSAGE;
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_UNEXPECTED_RECORD);
+                        al = SSL_AD_UNEXPECTED_MESSAGE;
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_UNEXPECTED_RECORD);
                         goto f_err;
-                        }
+                }
 
-                if (dest_maxlen > 0)
-                        {
+                if (dest_maxlen > 0) {
             /* XDTLS:  In a pathalogical case, the Client Hello
              *  may be fragmented--don't always expect dest_maxlen bytes */
-                        if ( rr->length < dest_maxlen)
-                                {
+                        if (rr->length < dest_maxlen) {
 #ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
                                 /*
                                  * for normal alerts rr->length is 2, while
@@ -1010,20 +982,19 @@ start:
                                  */
                                 FIX ME
 #endif
-                                s->rstate=SSL_ST_READ_HEADER;
+                                s->rstate = SSL_ST_READ_HEADER;
                                 rr->length = 0;
                                 goto start;
-                                }
+                        }
 
                         /* now move 'n' bytes: */
-                        for ( k = 0; k < dest_maxlen; k++)
-                                {
+                        for ( k = 0; k < dest_maxlen; k++) {
                                 dest[k] = rr->data[rr->off++];
                                 rr->length--;
-                                }
-                        *dest_len = dest_maxlen;
                         }
+                        *dest_len = dest_maxlen;
                 }
+        }
 
         /* s->d1->handshake_fragment_len == 12  iff  rr->type == SSL3_RT_HANDSHAKE;
          * s->d1->alert_fragment_len == 7      iff  rr->type == SSL3_RT_ALERT.
@@ -1031,117 +1002,107 @@ start:
 
         /* If we are a client, check for an incoming 'Hello Request': */
         if ((!s->server) &&
-                (s->d1->handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH) &&
-                (s->d1->handshake_fragment[0] == SSL3_MT_HELLO_REQUEST) &&
-                (s->session != NULL) && (s->session->cipher != NULL))
-                {
+            (s->d1->handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH) &&
+            (s->d1->handshake_fragment[0] == SSL3_MT_HELLO_REQUEST) &&
+            (s->session != NULL) && (s->session->cipher != NULL)) {
                 s->d1->handshake_fragment_len = 0;
 
                 if ((s->d1->handshake_fragment[1] != 0) ||
-                        (s->d1->handshake_fragment[2] != 0) ||
-                        (s->d1->handshake_fragment[3] != 0))
-                        {
-                        al=SSL_AD_DECODE_ERROR;
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_BAD_HELLO_REQUEST);
+                    (s->d1->handshake_fragment[2] != 0) ||
+                    (s->d1->handshake_fragment[3] != 0)) {
+                        al = SSL_AD_DECODE_ERROR;
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_BAD_HELLO_REQUEST);
                         goto err;
-                        }
+                }
 
                 /* no need to check sequence number on HELLO REQUEST messages */
 
                 if (s->msg_callback)
-                        s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, 
-                                s->d1->handshake_fragment, 4, s, s->msg_callback_arg);
+                        s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
+                s->d1->handshake_fragment, 4, s, s->msg_callback_arg);
 
                 if (SSL_is_init_finished(s) &&
-                        !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
-                        !s->s3->renegotiate)
-                        {
+                    !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
+                    !s->s3->renegotiate) {
                         s->d1->handshake_read_seq++;
                         s->new_session = 1;
                         ssl3_renegotiate(s);
-                        if (ssl3_renegotiate_check(s))
-                                {
-                                i=s->handshake_func(s);
-                                if (i < 0) return(i);
-                                if (i == 0)
-                                        {
-                                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
-                                        return(-1);
-                                        }
+                        if (ssl3_renegotiate_check(s)) {
+                                i = s->handshake_func(s);
+                                if (i < 0)
+                                        return (i);
+                                if (i == 0) {
+                                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_SSL_HANDSHAKE_FAILURE);
+                                        return (-1);
+                                }
 
-                                if (!(s->mode & SSL_MODE_AUTO_RETRY))
-                                        {
+                                if (!(s->mode & SSL_MODE_AUTO_RETRY)) {
                                         if (s->s3->rbuf.left == 0) /* no read-ahead left? */
-                                                {
+                                        {
                                                 BIO *bio;
                                                 /* In the case where we try to read application data,
                                                  * but we trigger an SSL handshake, we return -1 with
                                                  * the retry option set.  Otherwise renegotiation may
                                                  * cause nasty problems in the blocking world */
-                                                s->rwstate=SSL_READING;
-                                                bio=SSL_get_rbio(s);
+                                                s->rwstate = SSL_READING;
+                                                bio = SSL_get_rbio(s);
                                                 BIO_clear_retry_flags(bio);
                                                 BIO_set_retry_read(bio);
-                                                return(-1);
-                                                }
+                                                return (-1);
                                         }
                                 }
                         }
+                }
                 /* we either finished a handshake or ignored the request,
                  * now try again to obtain the (application) data we were asked for */
                 goto start;
-                }
+        }
 
-        if (s->d1->alert_fragment_len >= DTLS1_AL_HEADER_LENGTH)
-                {
+        if (s->d1->alert_fragment_len >= DTLS1_AL_HEADER_LENGTH) {
                 int alert_level = s->d1->alert_fragment[0];
                 int alert_descr = s->d1->alert_fragment[1];
 
                 s->d1->alert_fragment_len = 0;
 
                 if (s->msg_callback)
-                        s->msg_callback(0, s->version, SSL3_RT_ALERT, 
-                                s->d1->alert_fragment, 2, s, s->msg_callback_arg);
+                        s->msg_callback(0, s->version, SSL3_RT_ALERT,
+                s->d1->alert_fragment, 2, s, s->msg_callback_arg);
 
                 if (s->info_callback != NULL)
-                        cb=s->info_callback;
+                        cb = s->info_callback;
                 else if (s->ctx->info_callback != NULL)
-                        cb=s->ctx->info_callback;
+                        cb = s->ctx->info_callback;
 
-                if (cb != NULL)
-                        {
+                if (cb != NULL) {
                         j = (alert_level << 8) | alert_descr;
                         cb(s, SSL_CB_READ_ALERT, j);
-                        }
+                }
 
                 if (alert_level == 1) /* warning */
-                        {
+                {
                         s->s3->warn_alert = alert_descr;
-                        if (alert_descr == SSL_AD_CLOSE_NOTIFY)
-                                {
+                        if (alert_descr == SSL_AD_CLOSE_NOTIFY) {
 #ifndef OPENSSL_NO_SCTP
                                 /* With SCTP and streams the socket may deliver app data
                                  * after a close_notify alert. We have to check this
                                  * first so that nothing gets discarded.
                                  */
                                 if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
-                                        BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s)))
-                                        {
+                                        BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s))) {
                                         s->d1->shutdown_received = 1;
-                                        s->rwstate=SSL_READING;
+                                        s->rwstate = SSL_READING;
                                         BIO_clear_retry_flags(SSL_get_rbio(s));
                                         BIO_set_retry_read(SSL_get_rbio(s));
                                         return -1;
-                                        }
+                                }
 #endif
                                 s->shutdown |= SSL_RECEIVED_SHUTDOWN;
-                                return(0);
-                                }
+                                return (0);
+                        }
 #if 0
-            /* XXX: this is a possible improvement in the future */
+                        /* XXX: this is a possible improvement in the future */
                         /* now check if it's a missing record */
-                        if (alert_descr == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE)
-                                {
+                        if (alert_descr == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE) {
                                 unsigned short seq;
                                 unsigned int frag_off;
                                 unsigned char *p = &(s->d1->alert_fragment[2]);
@@ -1150,51 +1111,46 @@ start:
                                 n2l3(p, frag_off);
 
                                 dtls1_retransmit_message(s,
-                                                                                 dtls1_get_queue_priority(frag->msg_header.seq, 0),
-                                                                                 frag_off, &found);
-                                if ( ! found  && SSL_in_init(s))
-                                        {
+                                dtls1_get_queue_priority(frag->msg_header.seq, 0),
+                                frag_off, &found);
+                                if (!found  && SSL_in_init(s)) {
                                         /* fprintf( stderr,"in init = %d\n", SSL_in_init(s)); */
                                         /* requested a message not yet sent, 
                                            send an alert ourselves */
-                                        ssl3_send_alert(s,SSL3_AL_WARNING,
-                                                DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
-                                        }
+                                        ssl3_send_alert(s, SSL3_AL_WARNING,
+                                        DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
                                 }
-#endif
                         }
-                else if (alert_level == 2) /* fatal */
-                        {
+#endif
+                } else if (alert_level == 2) /* fatal */
+                {
                         char tmp[16];
 
-                        s->rwstate=SSL_NOTHING;
+                        s->rwstate = SSL_NOTHING;
                         s->s3->fatal_alert = alert_descr;
                         SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_AD_REASON_OFFSET + alert_descr);
-                        BIO_snprintf(tmp,sizeof tmp,"%d",alert_descr);
-                        ERR_add_error_data(2,"SSL alert number ",tmp);
+                        BIO_snprintf(tmp, sizeof tmp, "%d", alert_descr);
+                        ERR_add_error_data(2, "SSL alert number ", tmp);
                         s->shutdown|=SSL_RECEIVED_SHUTDOWN;
-                        SSL_CTX_remove_session(s->ctx,s->session);
-                        return(0);
-                        }
-                else
-                        {
-                        al=SSL_AD_ILLEGAL_PARAMETER;
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_UNKNOWN_ALERT_TYPE);
+                        SSL_CTX_remove_session(s->ctx, s->session);
+                        return (0);
+                } else {
+                        al = SSL_AD_ILLEGAL_PARAMETER;
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_UNKNOWN_ALERT_TYPE);
                         goto f_err;
-                        }
+                }
 
                 goto start;
-                }
+        }
 
         if (s->shutdown & SSL_SENT_SHUTDOWN) /* but we have not received a shutdown */
-                {
-                s->rwstate=SSL_NOTHING;
-                rr->length=0;
-                return(0);
-                }
+        {
+                s->rwstate = SSL_NOTHING;
+                rr->length = 0;
+                return (0);
+        }
 
-        if (rr->type == SSL3_RT_CHANGE_CIPHER_SPEC)
-                {
+        if (rr->type == SSL3_RT_CHANGE_CIPHER_SPEC) {
                 struct ccs_header_st ccs_hdr;
                 unsigned int ccs_hdr_len = DTLS1_CCS_HEADER_LENGTH;
 
@@ -1206,31 +1162,29 @@ start:
                 /* 'Change Cipher Spec' is just a single byte, so we know
                  * exactly what the record payload has to look like */
                 /* XDTLS: check that epoch is consistent */
-                if (    (rr->length != ccs_hdr_len) || 
-                        (rr->off != 0) || (rr->data[0] != SSL3_MT_CCS))
-                        {
-                        i=SSL_AD_ILLEGAL_PARAMETER;
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_BAD_CHANGE_CIPHER_SPEC);
+                if ((rr->length != ccs_hdr_len) ||
+                    (rr->off != 0) || (rr->data[0] != SSL3_MT_CCS)) {
+                        i = SSL_AD_ILLEGAL_PARAMETER;
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_BAD_CHANGE_CIPHER_SPEC);
                         goto err;
-                        }
+                }
 
-                rr->length=0;
+                rr->length = 0;
 
                 if (s->msg_callback)
-                        s->msg_callback(0, s->version, SSL3_RT_CHANGE_CIPHER_SPEC, 
-                                rr->data, 1, s, s->msg_callback_arg);
+                        s->msg_callback(0, s->version, SSL3_RT_CHANGE_CIPHER_SPEC,
+                rr->data, 1, s, s->msg_callback_arg);
 
                 /* We can't process a CCS now, because previous handshake
                  * messages are still missing, so just drop it.
                  */
-                if (!s->d1->change_cipher_spec_ok)
-                        {
+                if (!s->d1->change_cipher_spec_ok) {
                         goto start;
-                        }
+                }
 
                 s->d1->change_cipher_spec_ok = 0;
 
-                s->s3->change_cipher_spec=1;
+                s->s3->change_cipher_spec = 1;
                 if (!ssl3_do_change_cipher_spec(s))
                         goto err;
 
@@ -1250,90 +1204,82 @@ start:
 #endif
 
                 goto start;
-                }
+        }
 
         /* Unexpected handshake message (Client Hello, or protocol violation) */
-        if ((s->d1->handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH) && 
-                !s->in_handshake)
-                {
+        if ((s->d1->handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH) &&
+            !s->in_handshake) {
                 struct hm_header_st msg_hdr;
-                
+
                 /* this may just be a stale retransmit */
                 dtls1_get_message_header(rr->data, &msg_hdr);
-                if( rr->epoch != s->d1->r_epoch)
-                        {
+                if (rr->epoch != s->d1->r_epoch) {
                         rr->length = 0;
                         goto start;
-                        }
+                }
 
                 /* If we are server, we may have a repeated FINISHED of the
                  * client here, then retransmit our CCS and FINISHED.
                  */
-                if (msg_hdr.type == SSL3_MT_FINISHED)
-                        {
+                if (msg_hdr.type == SSL3_MT_FINISHED) {
                         if (dtls1_check_timeout_num(s) < 0)
                                 return -1;
 
                         dtls1_retransmit_buffered_messages(s);
                         rr->length = 0;
                         goto start;
-                        }
+                }
 
                 if (((s->state&SSL_ST_MASK) == SSL_ST_OK) &&
-                        !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS))
-                        {
+                    !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)) {
 #if 0 /* worked only because C operator preferences are not as expected (and
-       * because this is not really needed for clients except for detecting
+                        * because this is not really needed for clients except for detecting
        * protocol violations): */
-                        s->state=SSL_ST_BEFORE|(s->server)
-                                ?SSL_ST_ACCEPT
-                                :SSL_ST_CONNECT;
+                        s->state = SSL_ST_BEFORE |
+                            (s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT;
 #else
                         s->state = s->server ? SSL_ST_ACCEPT : SSL_ST_CONNECT;
 #endif
-                        s->renegotiate=1;
-                        s->new_session=1;
-                        }
-                i=s->handshake_func(s);
-                if (i < 0) return(i);
-                if (i == 0)
-                        {
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
-                        return(-1);
-                        }
+                        s->renegotiate = 1;
+                        s->new_session = 1;
+                }
+                i = s->handshake_func(s);
+                if (i < 0)
+                        return (i);
+                if (i == 0) {
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_SSL_HANDSHAKE_FAILURE);
+                        return (-1);
+                }
 
-                if (!(s->mode & SSL_MODE_AUTO_RETRY))
-                        {
+                if (!(s->mode & SSL_MODE_AUTO_RETRY)) {
                         if (s->s3->rbuf.left == 0) /* no read-ahead left? */
-                                {
+                        {
                                 BIO *bio;
                                 /* In the case where we try to read application data,
                                  * but we trigger an SSL handshake, we return -1 with
                                  * the retry option set.  Otherwise renegotiation may
                                  * cause nasty problems in the blocking world */
-                                s->rwstate=SSL_READING;
-                                bio=SSL_get_rbio(s);
+                                s->rwstate = SSL_READING;
+                                bio = SSL_get_rbio(s);
                                 BIO_clear_retry_flags(bio);
                                 BIO_set_retry_read(bio);
-                                return(-1);
-                                }
+                                return (-1);
                         }
-                goto start;
                 }
+                goto start;
+        }
 
-        switch (rr->type)
-                {
+        switch (rr->type) {
         default:
 #ifndef OPENSSL_NO_TLS
                 /* TLS just ignores unknown message types */
-                if (s->version == TLS1_VERSION)
-                        {
+                if (s->version == TLS1_VERSION) {
                         rr->length = 0;
                         goto start;
-                        }
+                }
 #endif
-                al=SSL_AD_UNEXPECTED_MESSAGE;
-                SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_UNEXPECTED_RECORD);
+                al = SSL_AD_UNEXPECTED_MESSAGE;
+                SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_UNEXPECTED_RECORD);
                 goto f_err;
         case SSL3_RT_CHANGE_CIPHER_SPEC:
         case SSL3_RT_ALERT:
@@ -1341,8 +1287,8 @@ start:
                 /* we already handled all of these, with the possible exception
                  * of SSL3_RT_HANDSHAKE when s->in_handshake is set, but that
                  * should not happen when type != rr->type */
-                al=SSL_AD_UNEXPECTED_MESSAGE;
-                SSLerr(SSL_F_DTLS1_READ_BYTES,ERR_R_INTERNAL_ERROR);
+                al = SSL_AD_UNEXPECTED_MESSAGE;
+                SSLerr(SSL_F_DTLS1_READ_BYTES, ERR_R_INTERNAL_ERROR);
                 goto f_err;
         case SSL3_RT_APPLICATION_DATA:
                 /* At this point, we were expecting handshake data,
@@ -1353,123 +1299,116 @@ start:
                  * we will indulge it.
                  */
                 if (s->s3->in_read_app_data &&
-                        (s->s3->total_renegotiations != 0) &&
-                        ((
-                                (s->state & SSL_ST_CONNECT) &&
-                                (s->state >= SSL3_ST_CW_CLNT_HELLO_A) &&
-                                (s->state <= SSL3_ST_CR_SRVR_HELLO_A)
-                                ) || (
-                                        (s->state & SSL_ST_ACCEPT) &&
-                                        (s->state <= SSL3_ST_SW_HELLO_REQ_A) &&
-                                        (s->state >= SSL3_ST_SR_CLNT_HELLO_A)
-                                        )
-                                ))
-                        {
-                        s->s3->in_read_app_data=2;
-                        return(-1);
-                        }
-                else
-                        {
-                        al=SSL_AD_UNEXPECTED_MESSAGE;
-                        SSLerr(SSL_F_DTLS1_READ_BYTES,SSL_R_UNEXPECTED_RECORD);
+                    (s->s3->total_renegotiations != 0) &&
+                    (((s->state & SSL_ST_CONNECT) &&
+                    (s->state >= SSL3_ST_CW_CLNT_HELLO_A) &&
+                    (s->state <= SSL3_ST_CR_SRVR_HELLO_A)) || (
+                    (s->state & SSL_ST_ACCEPT) &&
+                    (s->state <= SSL3_ST_SW_HELLO_REQ_A) &&
+                    (s->state >= SSL3_ST_SR_CLNT_HELLO_A)))) {
+                        s->s3->in_read_app_data = 2;
+                        return (-1);
+                } else {
+                        al = SSL_AD_UNEXPECTED_MESSAGE;
+                        SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_UNEXPECTED_RECORD);
                         goto f_err;
-                        }
                 }
+        }
         /* not reached */
 
 f_err:
-        ssl3_send_alert(s,SSL3_AL_FATAL,al);
+        ssl3_send_alert(s, SSL3_AL_FATAL, al);
 err:
-        return(-1);
-        }
+        return (-1);
+}
 
 int
 dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, int len)
-        {
+{
         int i;
 
 #ifndef OPENSSL_NO_SCTP
-                /* Check if we have to continue an interrupted handshake
-                 * for reading belated app data with SCTP.
-                 */
-                if ((SSL_in_init(s) && !s->in_handshake) ||
-                    (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
-                     (s->state == DTLS1_SCTP_ST_SR_READ_SOCK || s->state == DTLS1_SCTP_ST_CR_READ_SOCK)))
+        /* Check if we have to continue an interrupted handshake
+         * for reading belated app data with SCTP.
+         */
+        if ((SSL_in_init(s) && !s->in_handshake) ||
+            (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
+            (s->state == DTLS1_SCTP_ST_SR_READ_SOCK ||
+            s->state == DTLS1_SCTP_ST_CR_READ_SOCK)))
 #else
-                if (SSL_in_init(s) && !s->in_handshake)
+        if (SSL_in_init(s) && !s->in_handshake)
 #endif
-                {
-                i=s->handshake_func(s);
-                if (i < 0) return(i);
-                if (i == 0)
-                        {
-                        SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
+        {
+                i = s->handshake_func(s);
+                if (i < 0)
+                        return (i);
+                if (i == 0) {
+                        SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES, SSL_R_SSL_HANDSHAKE_FAILURE);
                         return -1;
-                        }
                 }
+        }
 
-        if (len > SSL3_RT_MAX_PLAIN_LENGTH)
-                {
-                        SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES,SSL_R_DTLS_MESSAGE_TOO_BIG);
-                        return -1;
-                }
+        if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
+                SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES, SSL_R_DTLS_MESSAGE_TOO_BIG);
+                return -1;
+        }
 
         i = dtls1_write_bytes(s, type, buf_, len);
         return i;
-        }
+}
 
 
         /* this only happens when a client hello is received and a handshake 
          * is started. */
 static int
-have_handshake_fragment(SSL *s, int type, unsigned char *buf, 
-        int len, int peek)
-        {
-        
+have_handshake_fragment(SSL *s, int type, unsigned char *buf,
+    int len, int peek)
+{
+
         if ((type == SSL3_RT_HANDSHAKE) && (s->d1->handshake_fragment_len > 0))
                 /* (partially) satisfy request from storage */
-                {
+        {
                 unsigned char *src = s->d1->handshake_fragment;
                 unsigned char *dst = buf;
-                unsigned int k,n;
-                
+                unsigned int k, n;
+
                 /* peek == 0 */
                 n = 0;
-                while ((len > 0) && (s->d1->handshake_fragment_len > 0))
-                        {
+                while ((len > 0) && (s->d1->handshake_fragment_len > 0)) {
                         *dst++ = *src++;
-                        len--; s->d1->handshake_fragment_len--;
+                        len--;
+                        s->d1->handshake_fragment_len--;
                         n++;
-                        }
+                }
                 /* move any remaining fragment bytes: */
                 for (k = 0; k < s->d1->handshake_fragment_len; k++)
                         s->d1->handshake_fragment[k] = *src++;
                 return n;
-                }
-        
-        return 0;
         }
 
-
+        return 0;
+}
 
 
 /* Call this to write data in records of type 'type'
  * It will return <= 0 if not all data has been sent or non-blocking IO.
  */
-int dtls1_write_bytes(SSL *s, int type, const void *buf, int len)
-        {
+int
+dtls1_write_bytes(SSL *s, int type, const void *buf, int len)
+{
         int i;
 
         OPENSSL_assert(len <= SSL3_RT_MAX_PLAIN_LENGTH);
-        s->rwstate=SSL_NOTHING;
-        i=do_dtls1_write(s, type, buf, len, 0);
+        s->rwstate = SSL_NOTHING;
+        i = do_dtls1_write(s, type, buf, len, 0);
         return i;
-        }
+}
 
-int do_dtls1_write(SSL *s, int type, const unsigned char *buf, unsigned int len, int create_empty_fragment)
-        {
-        unsigned char *p,*pseq;
-        int i,mac_size,clear=0;
+int
+do_dtls1_write(SSL *s, int type, const unsigned char *buf, unsigned int len, int create_empty_fragment)
+{
+        unsigned char *p, *pseq;
+        int i, mac_size, clear = 0;
         int prefix_len = 0;
         SSL3_RECORD *wr;
         SSL3_BUFFER *wb;
@@ -1478,54 +1417,49 @@ int do_dtls1_write(SSL *s, int type, const unsigned char *buf, unsigned int len,
 
         /* first check if there is a SSL3_BUFFER still being written
          * out.  This will happen with non blocking IO */
-        if (s->s3->wbuf.left != 0)
-                {
+        if (s->s3->wbuf.left != 0) {
                 OPENSSL_assert(0); /* XDTLS:  want to see if we ever get here */
-                return(ssl3_write_pending(s,type,buf,len));
-                }
+                return (ssl3_write_pending(s, type, buf, len));
+        }
 
         /* If we have an alert to send, lets send it */
-        if (s->s3->alert_dispatch)
-                {
-                i=s->method->ssl_dispatch_alert(s);
+        if (s->s3->alert_dispatch) {
+                i = s->method->ssl_dispatch_alert(s);
                 if (i <= 0)
-                        return(i);
+                        return (i);
                 /* if it went, fall through and send more stuff */
-                }
+        }
 
         if (len == 0 && !create_empty_fragment)
                 return 0;
 
-        wr= &(s->s3->wrec);
-        wb= &(s->s3->wbuf);
-        sess=s->session;
+        wr = &(s->s3->wrec);
+        wb = &(s->s3->wbuf);
+        sess = s->session;
 
-        if (    (sess == NULL) ||
-                (s->enc_write_ctx == NULL) ||
-                (EVP_MD_CTX_md(s->write_hash) == NULL))
-                clear=1;
+        if ((sess == NULL) || (s->enc_write_ctx == NULL) ||
+            (EVP_MD_CTX_md(s->write_hash) == NULL))
+                clear = 1;
 
         if (clear)
-                mac_size=0;
-        else
-                {
-                mac_size=EVP_MD_CTX_size(s->write_hash);
+                mac_size = 0;
+        else {
+                mac_size = EVP_MD_CTX_size(s->write_hash);
                 if (mac_size < 0)
                         goto err;
-                }
+        }
 
         /* DTLS implements explicit IV, so no need for empty fragments */
 #if 0
         /* 'create_empty_fragment' is true only when this function calls itself */
-        if (!clear && !create_empty_fragment && !s->s3->empty_fragment_done
-            && SSL_version(s) != DTLS1_VERSION && SSL_version(s) != DTLS1_BAD_VER)
-                {
+        if (!clear && !create_empty_fragment && !s->s3->empty_fragment_done &&
+            SSL_version(s) != DTLS1_VERSION &&
+            SSL_version(s) != DTLS1_BAD_VER) {
                 /* countermeasure against known-IV weakness in CBC ciphersuites
                  * (see http://www.openssl.org/~bodo/tls-cbc.txt) 
                  */
 
-                if (s->s3->need_empty_fragments && type == SSL3_RT_APPLICATION_DATA)
-                        {
+                if (s->s3->need_empty_fragments && type == SSL3_RT_APPLICATION_DATA) {
                         /* recursive function call with 'create_empty_fragment' set;
                          * this prepares and buffers the data for an empty fragment
                          * (these 'prefix_len' bytes are sent out later
@@ -1534,211 +1468,206 @@ int do_dtls1_write(SSL *s, int type, const unsigned char *buf, unsigned int len,
                         if (prefix_len <= 0)
                                 goto err;
 
-                        if (s->s3->wbuf.len < (size_t)prefix_len + SSL3_RT_MAX_PACKET_SIZE)
-                                {
+                        if (s->s3->wbuf.len < (size_t)prefix_len + SSL3_RT_MAX_PACKET_SIZE) {
                                 /* insufficient space */
                                 SSLerr(SSL_F_DO_DTLS1_WRITE, ERR_R_INTERNAL_ERROR);
                                 goto err;
-                                }
                         }
-                
-                s->s3->empty_fragment_done = 1;
                 }
+
+                s->s3->empty_fragment_done = 1;
+        }
 #endif
         p = wb->buf + prefix_len;
 
         /* write the header */
 
-        *(p++)=type&0xff;
-        wr->type=type;
+        *(p++) = type&0xff;
+        wr->type = type;
 
-        *(p++)=(s->version>>8);
-        *(p++)=s->version&0xff;
+        *(p++) = (s->version >> 8);
+        *(p++) = s->version&0xff;
 
         /* field where we are to write out packet epoch, seq num and len */
-        pseq=p; 
-        p+=10;
+        pseq = p;
+
+        p += 10;
 
         /* lets setup the record stuff. */
 
         /* Make space for the explicit IV in case of CBC.
          * (this is a bit of a boundary violation, but what the heck).
          */
-        if ( s->enc_write_ctx && 
-                (EVP_CIPHER_mode( s->enc_write_ctx->cipher ) & EVP_CIPH_CBC_MODE))
+        if (s->enc_write_ctx &&
+            (EVP_CIPHER_mode( s->enc_write_ctx->cipher ) & EVP_CIPH_CBC_MODE))
                 bs = EVP_CIPHER_block_size(s->enc_write_ctx->cipher);
         else
                 bs = 0;
 
-        wr->data=p + bs;  /* make room for IV in case of CBC */
-        wr->length=(int)len;
-        wr->input=(unsigned char *)buf;
+        wr->data = p + bs;
+        /* make room for IV in case of CBC */
+        wr->length = (int)len;
+        wr->input = (unsigned char *)buf;
 
         /* we now 'read' from wr->input, wr->length bytes into
          * wr->data */
 
         /* first we compress */
-        if (s->compress != NULL)
-                {
-                if (!ssl3_do_compress(s))
-                        {
-                        SSLerr(SSL_F_DO_DTLS1_WRITE,SSL_R_COMPRESSION_FAILURE);
+        if (s->compress != NULL) {
+                if (!ssl3_do_compress(s)) {
+                        SSLerr(SSL_F_DO_DTLS1_WRITE, SSL_R_COMPRESSION_FAILURE);
                         goto err;
-                        }
-                }
-        else
-                {
-                memcpy(wr->data,wr->input,wr->length);
-                wr->input=wr->data;
                 }
+        } else {
+                memcpy(wr->data, wr->input, wr->length);
+                wr->input = wr->data;
+        }
 
         /* we should still have the output to wr->data and the input
          * from wr->input.  Length should be wr->length.
          * wr->data still points in the wb->buf */
 
-        if (mac_size != 0)
-                {
-                if(s->method->ssl3_enc->mac(s,&(p[wr->length + bs]),1) < 0)
+        if (mac_size != 0) {
+                if (s->method->ssl3_enc->mac(s, &(p[wr->length + bs]), 1) < 0)
                         goto err;
-                wr->length+=mac_size;
-                }
+                wr->length += mac_size;
+        }
 
         /* this is true regardless of mac size */
-        wr->input=p;
-        wr->data=p;
+        wr->input = p;
+        wr->data = p;
 
 
         /* ssl3_enc can only have an error on read */
         if (bs) /* bs != 0 in case of CBC */
-                {
-                RAND_pseudo_bytes(p,bs);
+        {
+                RAND_pseudo_bytes(p, bs);
                 /* master IV and last CBC residue stand for
                  * the rest of randomness */
                 wr->length += bs;
-                }
+        }
 
-        s->method->ssl3_enc->enc(s,1);
+        s->method->ssl3_enc->enc(s, 1);
 
         /* record length after mac and block padding */
 /*      if (type == SSL3_RT_APPLICATION_DATA ||
         (type == SSL3_RT_ALERT && ! SSL_in_init(s))) */
-        
+
         /* there's only one epoch between handshake and app data */
-        
+
         s2n(s->d1->w_epoch, pseq);
 
         /* XDTLS: ?? */
 /*      else
-        s2n(s->d1->handshake_epoch, pseq); */
+        s2n(s->d1->handshake_epoch, pseq);
+*/
 
         memcpy(pseq, &(s->s3->write_sequence[2]), 6);
-        pseq+=6;
-        s2n(wr->length,pseq);
+        pseq += 6;
+        s2n(wr->length, pseq);
 
         /* we should now have
          * wr->data pointing to the encrypted data, which is
          * wr->length long */
         wr->type=type; /* not needed but helps for debugging */
-        wr->length+=DTLS1_RT_HEADER_LENGTH;
+        wr->length += DTLS1_RT_HEADER_LENGTH;
 
 #if 0  /* this is now done at the message layer */
         /* buffer the record, making it easy to handle retransmits */
-        if ( type == SSL3_RT_HANDSHAKE || type == SSL3_RT_CHANGE_CIPHER_SPEC)
-                dtls1_buffer_record(s, wr->data, wr->length, 
-                        *((PQ_64BIT *)&(s->s3->write_sequence[0])));
+        if (type == SSL3_RT_HANDSHAKE || type == SSL3_RT_CHANGE_CIPHER_SPEC)
+                dtls1_buffer_record(s, wr->data, wr->length,
+        *((PQ_64BIT *)&(s->s3->write_sequence[0])));
 #endif
 
         ssl3_record_sequence_update(&(s->s3->write_sequence[0]));
 
-        if (create_empty_fragment)
-                {
+        if (create_empty_fragment) {
                 /* we are in a recursive call;
                  * just return the length, don't write out anything here
                  */
                 return wr->length;
-                }
+        }
 
         /* now let's set up wb */
         wb->left = prefix_len + wr->length;
         wb->offset = 0;
 
         /* memorize arguments so that ssl3_write_pending can detect bad write retries later */
-        s->s3->wpend_tot=len;
-        s->s3->wpend_buf=buf;
-        s->s3->wpend_type=type;
-        s->s3->wpend_ret=len;
+        s->s3->wpend_tot = len;
+        s->s3->wpend_buf = buf;
+        s->s3->wpend_type = type;
+        s->s3->wpend_ret = len;
 
         /* we now just need to write the buffer */
-        return ssl3_write_pending(s,type,buf,len);
+        return ssl3_write_pending(s, type, buf, len);
 err:
         return -1;
-        }
+}
 
 
 
-static int dtls1_record_replay_check(SSL *s, DTLS1_BITMAP *bitmap)
-        {
+static int
+dtls1_record_replay_check(SSL *s, DTLS1_BITMAP *bitmap)
+{
         int cmp;
         unsigned int shift;
         const unsigned char *seq = s->s3->read_sequence;
 
-        cmp = satsub64be(seq,bitmap->max_seq_num);
-        if (cmp > 0)
-                {
-                memcpy (s->s3->rrec.seq_num,seq,8);
+        cmp = satsub64be(seq, bitmap->max_seq_num);
+        if (cmp > 0) {
+                memcpy (s->s3->rrec.seq_num, seq, 8);
                 return 1; /* this record in new */
-                }
+        }
         shift = -cmp;
         if (shift >= sizeof(bitmap->map)*8)
                 return 0; /* stale, outside the window */
-        else if (bitmap->map & (1UL<<shift))
+        else if (bitmap->map & (1UL << shift))
                 return 0; /* record previously received */
 
-        memcpy (s->s3->rrec.seq_num,seq,8);
+        memcpy(s->s3->rrec.seq_num, seq, 8);
         return 1;
-        }
+}
 
 
-static void dtls1_record_bitmap_update(SSL *s, DTLS1_BITMAP *bitmap)
-        {
+static void
+dtls1_record_bitmap_update(SSL *s, DTLS1_BITMAP *bitmap)
+{
         int cmp;
         unsigned int shift;
         const unsigned char *seq = s->s3->read_sequence;
 
-        cmp = satsub64be(seq,bitmap->max_seq_num);
-        if (cmp > 0)
-                {
+        cmp = satsub64be(seq, bitmap->max_seq_num);
+        if (cmp > 0) {
                 shift = cmp;
                 if (shift < sizeof(bitmap->map)*8)
                         bitmap->map <<= shift, bitmap->map |= 1UL;
                 else
                         bitmap->map = 1UL;
-                memcpy(bitmap->max_seq_num,seq,8);
-                }
-        else    {
+                memcpy(bitmap->max_seq_num, seq, 8);
+        } else {
                 shift = -cmp;
-                if (shift < sizeof(bitmap->map)*8)
-                        bitmap->map |= 1UL<<shift;
-                }
+                if (shift < sizeof(bitmap->map) * 8)
+                        bitmap->map |= 1UL << shift;
         }
+}
 
 
-int dtls1_dispatch_alert(SSL *s)
-        {
-        int i,j;
-        void (*cb)(const SSL *ssl,int type,int val)=NULL;
+int
+dtls1_dispatch_alert(SSL *s)
+{
+        int i, j;
+        void (*cb)(const SSL *ssl, int type, int val) = NULL;
         unsigned char buf[DTLS1_AL_HEADER_LENGTH];
         unsigned char *ptr = &buf[0];
 
-        s->s3->alert_dispatch=0;
+        s->s3->alert_dispatch = 0;
 
         memset(buf, 0x00, sizeof(buf));
         *ptr++ = s->s3->send_alert[0];
         *ptr++ = s->s3->send_alert[1];
 
 #ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
-        if (s->s3->send_alert[1] == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE)
-                {       
+        if (s->s3->send_alert[1] == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE) {
                 s2n(s->d1->handshake_read_seq, ptr);
 #if 0
                 if ( s->d1->r_msg_hdr.frag_off == 0)  /* waiting for a new msg */
@@ -1748,152 +1677,136 @@ int dtls1_dispatch_alert(SSL *s)
 #endif
 
 #if 0
-                fprintf(stderr, "s->d1->handshake_read_seq = %d, s->d1->r_msg_hdr.seq = %d\n",s->d1->handshake_read_seq,s->d1->r_msg_hdr.seq);
+                fprintf(stderr, "s->d1->handshake_read_seq = %d, s->d1->r_msg_hdr.seq = %d\n", s->d1->handshake_read_seq, s->d1->r_msg_hdr.seq);
 #endif
                 l2n3(s->d1->r_msg_hdr.frag_off, ptr);
-                }
+        }
 #endif
 
         i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0);
-        if (i <= 0)
-                {
-                s->s3->alert_dispatch=1;
+        if (i <= 0) {
+                s->s3->alert_dispatch = 1;
                 /* fprintf( stderr, "not done with alert\n" ); */
-                }
-        else
-                {
+        } else {
                 if (s->s3->send_alert[0] == SSL3_AL_FATAL
 #ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
-                    || s->s3->send_alert[1] == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
+                || s->s3->send_alert[1] == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
 #endif
-                    )
-                        (void)BIO_flush(s->wbio);
+                )
+                (void)BIO_flush(s->wbio);
 
                 if (s->msg_callback)
-                        s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert, 
-                                2, s, s->msg_callback_arg);
+                        s->msg_callback(1, s->version, SSL3_RT_ALERT,
+                            s->s3->send_alert, 2, s, s->msg_callback_arg);
 
                 if (s->info_callback != NULL)
-                        cb=s->info_callback;
+                        cb = s->info_callback;
                 else if (s->ctx->info_callback != NULL)
-                        cb=s->ctx->info_callback;
+                        cb = s->ctx->info_callback;
 
-                if (cb != NULL)
-                        {
-                        j=(s->s3->send_alert[0]<<8)|s->s3->send_alert[1];
-                        cb(s,SSL_CB_WRITE_ALERT,j);
-                        }
+                if (cb != NULL) {
+                        j = (s->s3->send_alert[0]<<8)|s->s3->send_alert[1];
+                        cb(s, SSL_CB_WRITE_ALERT, j);
                 }
-        return(i);
         }
+        return (i);
+}
 
 
 static DTLS1_BITMAP *
 dtls1_get_bitmap(SSL *s, SSL3_RECORD *rr, unsigned int *is_next_epoch)
-    {
-    
-    *is_next_epoch = 0;
-
-    /* In current epoch, accept HM, CCS, DATA, & ALERT */
-    if (rr->epoch == s->d1->r_epoch)
-        return &s->d1->bitmap;
-
-    /* Only HM and ALERT messages can be from the next epoch */
-    else if (rr->epoch == (unsigned long)(s->d1->r_epoch + 1) &&
-        (rr->type == SSL3_RT_HANDSHAKE ||
-            rr->type == SSL3_RT_ALERT))
-        {
-        *is_next_epoch = 1;
-        return &s->d1->next_bitmap;
-        }
-
-    return NULL;
-    }
+{
+
+        *is_next_epoch = 0;
+
+        /* In current epoch, accept HM, CCS, DATA, & ALERT */
+        if (rr->epoch == s->d1->r_epoch)
+                return &s->d1->bitmap;
+
+        /* Only HM and ALERT messages can be from the next epoch */
+        else if (rr->epoch == (unsigned long)(s->d1->r_epoch + 1) &&
+                (rr->type == SSL3_RT_HANDSHAKE || rr->type == SSL3_RT_ALERT)) {
+                *is_next_epoch = 1;
+                return &s->d1->next_bitmap;
+        }
+
+        return NULL;
+}
 
 #if 0
 static int
 dtls1_record_needs_buffering(SSL *s, SSL3_RECORD *rr, unsigned short *priority,
-        unsigned long *offset)
-        {
+    unsigned long *offset)
+{
 
         /* alerts are passed up immediately */
-        if ( rr->type == SSL3_RT_APPLICATION_DATA ||
-                rr->type == SSL3_RT_ALERT)
+        if (rr->type == SSL3_RT_APPLICATION_DATA || rr->type == SSL3_RT_ALERT)
                 return 0;
 
         /* Only need to buffer if a handshake is underway.
          * (this implies that Hello Request and Client Hello are passed up
          * immediately) */
-        if ( SSL_in_init(s))
-                {
+        if (SSL_in_init(s)) {
                 unsigned char *data = rr->data;
                 /* need to extract the HM/CCS sequence number here */
-                if ( rr->type == SSL3_RT_HANDSHAKE ||
-                        rr->type == SSL3_RT_CHANGE_CIPHER_SPEC)
-                        {
+                if (rr->type == SSL3_RT_HANDSHAKE ||
+                    rr->type == SSL3_RT_CHANGE_CIPHER_SPEC) {
                         unsigned short seq_num;
                         struct hm_header_st msg_hdr;
                         struct ccs_header_st ccs_hdr;
 
-                        if ( rr->type == SSL3_RT_HANDSHAKE)
-                                {
+                        if (rr->type == SSL3_RT_HANDSHAKE) {
                                 dtls1_get_message_header(data, &msg_hdr);
                                 seq_num = msg_hdr.seq;
                                 *offset = msg_hdr.frag_off;
-                                }
-                        else
-                                {
+                        } else {
                                 dtls1_get_ccs_header(data, &ccs_hdr);
                                 seq_num = ccs_hdr.seq;
                                 *offset = 0;
-                                }
-                                
+                        }
+
                         /* this is either a record we're waiting for, or a
                          * retransmit of something we happened to previously 
                          * receive (higher layers will drop the repeat silently */
-                        if ( seq_num < s->d1->handshake_read_seq)
+                        if (seq_num < s->d1->handshake_read_seq)
                                 return 0;
-                        if (rr->type == SSL3_RT_HANDSHAKE && 
-                                seq_num == s->d1->handshake_read_seq &&
-                                msg_hdr.frag_off < s->d1->r_msg_hdr.frag_off)
+                        if (rr->type == SSL3_RT_HANDSHAKE &&
+                            seq_num == s->d1->handshake_read_seq &&
+                            msg_hdr.frag_off < s->d1->r_msg_hdr.frag_off)
                                 return 0;
-                        else if ( seq_num == s->d1->handshake_read_seq &&
-                                (rr->type == SSL3_RT_CHANGE_CIPHER_SPEC ||
-                                        msg_hdr.frag_off == s->d1->r_msg_hdr.frag_off))
+                        else if (seq_num == s->d1->handshake_read_seq &&
+                            (rr->type == SSL3_RT_CHANGE_CIPHER_SPEC ||
+                            msg_hdr.frag_off == s->d1->r_msg_hdr.frag_off))
                                 return 0;
-                        else
-                                {
+                        else {
                                 *priority = seq_num;
                                 return 1;
-                                }
                         }
+                }
                 else /* unknown record type */
                         return 0;
-                }
+        }
 
         return 0;
-        }
+}
 #endif
 
 void
 dtls1_reset_seq_numbers(SSL *s, int rw)
-        {
+{
         unsigned char *seq;
         unsigned int seq_bytes = sizeof(s->s3->read_sequence);
 
-        if ( rw & SSL3_CC_READ)
-                {
+        if (rw & SSL3_CC_READ) {
                 seq = s->s3->read_sequence;
                 s->d1->r_epoch++;
                 memcpy(&(s->d1->bitmap), &(s->d1->next_bitmap), sizeof(DTLS1_BITMAP));
                 memset(&(s->d1->next_bitmap), 0x00, sizeof(DTLS1_BITMAP));
-                }
-        else
-                {
+        } else {
                 seq = s->s3->write_sequence;
                 memcpy(s->d1->last_write_sequence, seq, sizeof(s->s3->write_sequence));
                 s->d1->w_epoch++;
-                }
+        }
 
         memset(seq, 0x00, seq_bytes);
-        }
+}