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Diffstat (limited to 'lib/libssl/src/ssl/d1_both.c')
-rw-r--r--lib/libssl/src/ssl/d1_both.c1066
1 files changed, 501 insertions, 565 deletions
diff --git a/lib/libssl/src/ssl/d1_both.c b/lib/libssl/src/ssl/d1_both.c
index a265fed22fd..c051e84874a 100644
--- a/lib/libssl/src/ssl/d1_both.c
+++ b/lib/libssl/src/ssl/d1_both.c
@@ -152,102 +152,102 @@
printf("\n"); }
#endif
-static unsigned char bitmask_start_values[] = {0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80};
-static unsigned char bitmask_end_values[] = {0xff, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f};
+static unsigned char bitmask_start_values[] = {
+ 0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80
+};
+static unsigned char bitmask_end_values[] = {
+ 0xff, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
+};
/* XDTLS: figure out the right values */
static unsigned int g_probable_mtu[] = {1500 - 28, 512 - 28, 256 - 28};
static unsigned int dtls1_guess_mtu(unsigned int curr_mtu);
-static void dtls1_fix_message_header(SSL *s, unsigned long frag_off,
- unsigned long frag_len);
-static unsigned char *dtls1_write_message_header(SSL *s,
- unsigned char *p);
+static void dtls1_fix_message_header(SSL *s, unsigned long frag_off,
+ unsigned long frag_len);
+static unsigned char *dtls1_write_message_header(SSL *s, unsigned char *p);
static void dtls1_set_message_header_int(SSL *s, unsigned char mt,
- unsigned long len, unsigned short seq_num, unsigned long frag_off,
- unsigned long frag_len);
-static long dtls1_get_message_fragment(SSL *s, int st1, int stn,
- long max, int *ok);
+ unsigned long len, unsigned short seq_num, unsigned long frag_off,
+ unsigned long frag_len);
+static long dtls1_get_message_fragment(SSL *s, int st1, int stn, long max,
+ int *ok);
static hm_fragment *
dtls1_hm_fragment_new(unsigned long frag_len, int reassembly)
- {
+{
hm_fragment *frag = NULL;
unsigned char *buf = NULL;
unsigned char *bitmask = NULL;
frag = (hm_fragment *)OPENSSL_malloc(sizeof(hm_fragment));
- if ( frag == NULL)
+ if (frag == NULL)
return NULL;
- if (frag_len)
- {
+ if (frag_len) {
buf = (unsigned char *)OPENSSL_malloc(frag_len);
- if ( buf == NULL)
- {
+ if (buf == NULL) {
OPENSSL_free(frag);
return NULL;
- }
}
+ }
/* zero length fragment gets zero frag->fragment */
frag->fragment = buf;
/* Initialize reassembly bitmask if necessary */
- if (reassembly)
- {
+ if (reassembly) {
bitmask = (unsigned char *)OPENSSL_malloc(RSMBLY_BITMASK_SIZE(frag_len));
- if (bitmask == NULL)
- {
- if (buf != NULL) OPENSSL_free(buf);
+ if (bitmask == NULL) {
+ if (buf != NULL)
+ OPENSSL_free(buf);
OPENSSL_free(frag);
return NULL;
- }
- memset(bitmask, 0, RSMBLY_BITMASK_SIZE(frag_len));
}
+ memset(bitmask, 0, RSMBLY_BITMASK_SIZE(frag_len));
+ }
frag->reassembly = bitmask;
return frag;
- }
+}
static void
dtls1_hm_fragment_free(hm_fragment *frag)
- {
+{
- if (frag->msg_header.is_ccs)
- {
+ if (frag->msg_header.is_ccs) {
EVP_CIPHER_CTX_free(frag->msg_header.saved_retransmit_state.enc_write_ctx);
EVP_MD_CTX_destroy(frag->msg_header.saved_retransmit_state.write_hash);
- }
- if (frag->fragment) OPENSSL_free(frag->fragment);
- if (frag->reassembly) OPENSSL_free(frag->reassembly);
- OPENSSL_free(frag);
}
+ if (frag->fragment)
+ OPENSSL_free(frag->fragment);
+ if (frag->reassembly)
+ OPENSSL_free(frag->reassembly);
+ OPENSSL_free(frag);
+}
/* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */
-int dtls1_do_write(SSL *s, int type)
- {
+int
+dtls1_do_write(SSL *s, int type)
+{
int ret;
int curr_mtu;
unsigned int len, frag_off, mac_size, blocksize;
/* AHA! Figure out the MTU, and stick to the right size */
- if (s->d1->mtu < dtls1_min_mtu() && !(SSL_get_options(s) & SSL_OP_NO_QUERY_MTU))
- {
- s->d1->mtu =
- BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
+ if (s->d1->mtu < dtls1_min_mtu() && !(SSL_get_options(s) & SSL_OP_NO_QUERY_MTU)) {
+ s->d1->mtu = BIO_ctrl(SSL_get_wbio(s),
+ BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
/* I've seen the kernel return bogus numbers when it doesn't know
* (initial write), so just make sure we have a reasonable number */
- if (s->d1->mtu < dtls1_min_mtu())
- {
+ if (s->d1->mtu < dtls1_min_mtu()) {
s->d1->mtu = 0;
s->d1->mtu = dtls1_guess_mtu(s->d1->mtu);
- BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SET_MTU,
- s->d1->mtu, NULL);
- }
+ BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SET_MTU,
+ s->d1->mtu, NULL);
}
+ }
#if 0
mtu = s->d1->mtu;
@@ -257,154 +257,144 @@ int dtls1_do_write(SSL *s, int type)
curr_mtu = mtu - BIO_wpending(SSL_get_wbio(s));
- if ( curr_mtu > 0)
+ if (curr_mtu > 0)
mtu = curr_mtu;
- else if ( ( ret = BIO_flush(SSL_get_wbio(s))) <= 0)
+ else if (( ret = BIO_flush(SSL_get_wbio(s))) <= 0)
return ret;
- if ( BIO_wpending(SSL_get_wbio(s)) + s->init_num >= mtu)
- {
+ if (BIO_wpending(SSL_get_wbio(s)) + s->init_num >= mtu) {
ret = BIO_flush(SSL_get_wbio(s));
- if ( ret <= 0)
+ if (ret <= 0)
return ret;
mtu = s->d1->mtu - (DTLS1_HM_HEADER_LENGTH + DTLS1_RT_HEADER_LENGTH);
- }
+ }
#endif
- OPENSSL_assert(s->d1->mtu >= dtls1_min_mtu()); /* should have something reasonable now */
+ OPENSSL_assert(s->d1->mtu >= dtls1_min_mtu());
+ /* should have something reasonable now */
- if ( s->init_off == 0 && type == SSL3_RT_HANDSHAKE)
- OPENSSL_assert(s->init_num ==
- (int)s->d1->w_msg_hdr.msg_len + DTLS1_HM_HEADER_LENGTH);
+ if (s->init_off == 0 && type == SSL3_RT_HANDSHAKE)
+ OPENSSL_assert(s->init_num ==
+ (int)s->d1->w_msg_hdr.msg_len + DTLS1_HM_HEADER_LENGTH);
if (s->write_hash)
mac_size = EVP_MD_CTX_size(s->write_hash);
else
mac_size = 0;
- if (s->enc_write_ctx &&
+ if (s->enc_write_ctx &&
(EVP_CIPHER_mode( s->enc_write_ctx->cipher) & EVP_CIPH_CBC_MODE))
- blocksize = 2 * EVP_CIPHER_block_size(s->enc_write_ctx->cipher);
+ blocksize = 2 * EVP_CIPHER_block_size(s->enc_write_ctx->cipher);
else
blocksize = 0;
frag_off = 0;
- while( s->init_num)
- {
- curr_mtu = s->d1->mtu - BIO_wpending(SSL_get_wbio(s)) -
- DTLS1_RT_HEADER_LENGTH - mac_size - blocksize;
+ while (s->init_num) {
+ curr_mtu = s->d1->mtu - BIO_wpending(SSL_get_wbio(s)) -
+ DTLS1_RT_HEADER_LENGTH - mac_size - blocksize;
- if ( curr_mtu <= DTLS1_HM_HEADER_LENGTH)
- {
+ if (curr_mtu <= DTLS1_HM_HEADER_LENGTH) {
/* grr.. we could get an error if MTU picked was wrong */
ret = BIO_flush(SSL_get_wbio(s));
- if ( ret <= 0)
+ if (ret <= 0)
return ret;
curr_mtu = s->d1->mtu - DTLS1_RT_HEADER_LENGTH -
- mac_size - blocksize;
- }
+ mac_size - blocksize;
+ }
- if ( s->init_num > curr_mtu)
+ if (s->init_num > curr_mtu)
len = curr_mtu;
else
len = s->init_num;
/* XDTLS: this function is too long. split out the CCS part */
- if ( type == SSL3_RT_HANDSHAKE)
- {
- if ( s->init_off != 0)
- {
+ if (type == SSL3_RT_HANDSHAKE) {
+ if (s->init_off != 0) {
OPENSSL_assert(s->init_off > DTLS1_HM_HEADER_LENGTH);
s->init_off -= DTLS1_HM_HEADER_LENGTH;
s->init_num += DTLS1_HM_HEADER_LENGTH;
- if ( s->init_num > curr_mtu)
+ if (s->init_num > curr_mtu)
len = curr_mtu;
else
len = s->init_num;
- }
+ }
- dtls1_fix_message_header(s, frag_off,
- len - DTLS1_HM_HEADER_LENGTH);
+ dtls1_fix_message_header(s, frag_off,
+ len - DTLS1_HM_HEADER_LENGTH);
dtls1_write_message_header(s, (unsigned char *)&s->init_buf->data[s->init_off]);
OPENSSL_assert(len >= DTLS1_HM_HEADER_LENGTH);
- }
+ }
- ret=dtls1_write_bytes(s,type,&s->init_buf->data[s->init_off],
- len);
- if (ret < 0)
- {
+ ret = dtls1_write_bytes(s, type,
+ &s->init_buf->data[s->init_off], len);
+ if (ret < 0) {
/* might need to update MTU here, but we don't know
* which previous packet caused the failure -- so can't
* really retransmit anything. continue as if everything
* is fine and wait for an alert to handle the
* retransmit
*/
- if ( BIO_ctrl(SSL_get_wbio(s),
- BIO_CTRL_DGRAM_MTU_EXCEEDED, 0, NULL) > 0 )
+ if (BIO_ctrl(SSL_get_wbio(s),
+ BIO_CTRL_DGRAM_MTU_EXCEEDED, 0, NULL) > 0)
s->d1->mtu = BIO_ctrl(SSL_get_wbio(s),
- BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
+ BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
else
- return(-1);
- }
- else
- {
+ return (-1);
+ } else {
/* bad if this assert fails, only part of the handshake
* message got sent. but why would this happen? */
OPENSSL_assert(len == (unsigned int)ret);
- if (type == SSL3_RT_HANDSHAKE && ! s->d1->retransmitting)
- {
+ if (type == SSL3_RT_HANDSHAKE && ! s->d1->retransmitting) {
/* should not be done for 'Hello Request's, but in that case
* we'll ignore the result anyway */
unsigned char *p = (unsigned char *)&s->init_buf->data[s->init_off];
const struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr;
int xlen;
- if (frag_off == 0 && s->version != DTLS1_BAD_VER)
- {
+ if (frag_off == 0 && s->version != DTLS1_BAD_VER) {
/* reconstruct message header is if it
* is being sent in single fragment */
*p++ = msg_hdr->type;
- l2n3(msg_hdr->msg_len,p);
- s2n (msg_hdr->seq,p);
- l2n3(0,p);
- l2n3(msg_hdr->msg_len,p);
- p -= DTLS1_HM_HEADER_LENGTH;
+ l2n3(msg_hdr->msg_len, p);
+ s2n (msg_hdr->seq, p);
+ l2n3(0, p);
+ l2n3(msg_hdr->msg_len, p);
+ p -= DTLS1_HM_HEADER_LENGTH;
xlen = ret;
- }
- else
- {
- p += DTLS1_HM_HEADER_LENGTH;
+ } else {
+ p += DTLS1_HM_HEADER_LENGTH;
xlen = ret - DTLS1_HM_HEADER_LENGTH;
- }
+ }
ssl3_finish_mac(s, p, xlen);
- }
+ }
- if (ret == s->init_num)
- {
+ if (ret == s->init_num) {
if (s->msg_callback)
- s->msg_callback(1, s->version, type, s->init_buf->data,
- (size_t)(s->init_off + s->init_num), s,
- s->msg_callback_arg);
+ s->msg_callback(1, s->version, type,
+ s->init_buf->data,
+ (size_t)(s->init_off + s->init_num),
+ s, s->msg_callback_arg);
- s->init_off = 0; /* done writing this message */
+ s->init_off = 0;
+ /* done writing this message */
s->init_num = 0;
- return(1);
- }
- s->init_off+=ret;
- s->init_num-=ret;
- frag_off += (ret -= DTLS1_HM_HEADER_LENGTH);
+ return (1);
}
+ s->init_off += ret;
+ s->init_num -= ret;
+ frag_off += (ret -= DTLS1_HM_HEADER_LENGTH);
}
- return(0);
}
+ return (0);
+}
/* Obtain handshake message of message type 'mt' (any if mt == -1),
@@ -412,8 +402,9 @@ int dtls1_do_write(SSL *s, int type)
* Read an entire handshake message. Handshake messages arrive in
* fragments.
*/
-long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
- {
+long
+dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
+{
int i, al;
struct hm_header_st *msg_hdr;
unsigned char *p;
@@ -421,30 +412,28 @@ long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
/* s3->tmp is used to store messages that are unexpected, caused
* by the absence of an optional handshake message */
- if (s->s3->tmp.reuse_message)
- {
- s->s3->tmp.reuse_message=0;
- if ((mt >= 0) && (s->s3->tmp.message_type != mt))
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_DTLS1_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
+ if (s->s3->tmp.reuse_message) {
+ s->s3->tmp.reuse_message = 0;
+ if ((mt >= 0) && (s->s3->tmp.message_type != mt)) {
+ al = SSL_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_DTLS1_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
- }
- *ok=1;
+ }
+ *ok = 1;
s->init_msg = s->init_buf->data + DTLS1_HM_HEADER_LENGTH;
s->init_num = (int)s->s3->tmp.message_size;
return s->init_num;
- }
+ }
msg_hdr = &s->d1->r_msg_hdr;
memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
again:
i = dtls1_get_message_fragment(s, st1, stn, max, ok);
- if ( i == DTLS1_HM_BAD_FRAGMENT ||
- i == DTLS1_HM_FRAGMENT_RETRY) /* bad fragment received */
+ if (i == DTLS1_HM_BAD_FRAGMENT ||
+ i == DTLS1_HM_FRAGMENT_RETRY) /* bad fragment received */
goto again;
- else if ( i <= 0 && !*ok)
+ else if (i <= 0 && !*ok)
return i;
p = (unsigned char *)s->init_buf->data;
@@ -452,20 +441,19 @@ again:
/* reconstruct message header */
*(p++) = msg_hdr->type;
- l2n3(msg_len,p);
- s2n (msg_hdr->seq,p);
- l2n3(0,p);
- l2n3(msg_len,p);
+ l2n3(msg_len, p);
+ s2n (msg_hdr->seq, p);
+ l2n3(0, p);
+ l2n3(msg_len, p);
if (s->version != DTLS1_BAD_VER) {
- p -= DTLS1_HM_HEADER_LENGTH;
+ p -= DTLS1_HM_HEADER_LENGTH;
msg_len += DTLS1_HM_HEADER_LENGTH;
}
ssl3_finish_mac(s, p, msg_len);
if (s->msg_callback)
- s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
- p, msg_len,
- s, s->msg_callback_arg);
+ s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, msg_len,
+ s, s->msg_callback_arg);
memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
@@ -477,64 +465,59 @@ again:
return s->init_num;
f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
*ok = 0;
return -1;
- }
+}
-static int dtls1_preprocess_fragment(SSL *s,struct hm_header_st *msg_hdr,int max)
- {
- size_t frag_off,frag_len,msg_len;
+static int
+dtls1_preprocess_fragment(SSL *s, struct hm_header_st *msg_hdr, int max) {
+ size_t frag_off, frag_len, msg_len;
- msg_len = msg_hdr->msg_len;
+ msg_len = msg_hdr->msg_len;
frag_off = msg_hdr->frag_off;
frag_len = msg_hdr->frag_len;
/* sanity checking */
- if ( (frag_off+frag_len) > msg_len)
- {
- SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT,SSL_R_EXCESSIVE_MESSAGE_SIZE);
+ if ((frag_off + frag_len) > msg_len) {
+ SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT, SSL_R_EXCESSIVE_MESSAGE_SIZE);
return SSL_AD_ILLEGAL_PARAMETER;
- }
+ }
- if ( (frag_off+frag_len) > (unsigned long)max)
- {
- SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT,SSL_R_EXCESSIVE_MESSAGE_SIZE);
+ if ((frag_off + frag_len) > (unsigned long)max) {
+ SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT, SSL_R_EXCESSIVE_MESSAGE_SIZE);
return SSL_AD_ILLEGAL_PARAMETER;
- }
+ }
if ( s->d1->r_msg_hdr.frag_off == 0) /* first fragment */
- {
+ {
/* msg_len is limited to 2^24, but is effectively checked
* against max above */
- if (!BUF_MEM_grow_clean(s->init_buf,msg_len+DTLS1_HM_HEADER_LENGTH))
- {
- SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT,ERR_R_BUF_LIB);
+ if (!BUF_MEM_grow_clean(s->init_buf, msg_len + DTLS1_HM_HEADER_LENGTH)) {
+ SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT, ERR_R_BUF_LIB);
return SSL_AD_INTERNAL_ERROR;
- }
+ }
- s->s3->tmp.message_size = msg_len;
+ s->s3->tmp.message_size = msg_len;
s->d1->r_msg_hdr.msg_len = msg_len;
- s->s3->tmp.message_type = msg_hdr->type;
- s->d1->r_msg_hdr.type = msg_hdr->type;
- s->d1->r_msg_hdr.seq = msg_hdr->seq;
- }
- else if (msg_len != s->d1->r_msg_hdr.msg_len)
- {
+ s->s3->tmp.message_type = msg_hdr->type;
+ s->d1->r_msg_hdr.type = msg_hdr->type;
+ s->d1->r_msg_hdr.seq = msg_hdr->seq;
+ } else if (msg_len != s->d1->r_msg_hdr.msg_len) {
/* They must be playing with us! BTW, failure to enforce
* upper limit would open possibility for buffer overrun. */
- SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT,SSL_R_EXCESSIVE_MESSAGE_SIZE);
+ SSLerr(SSL_F_DTLS1_PREPROCESS_FRAGMENT, SSL_R_EXCESSIVE_MESSAGE_SIZE);
return SSL_AD_ILLEGAL_PARAMETER;
- }
+ }
return 0; /* no error */
- }
+}
static int
dtls1_retrieve_buffered_fragment(SSL *s, long max, int *ok)
- {
+{
/* (0) check whether the desired fragment is available
* if so:
* (1) copy over the fragment to s->init_buf->data[]
@@ -546,58 +529,54 @@ dtls1_retrieve_buffered_fragment(SSL *s, long max, int *ok)
*ok = 0;
item = pqueue_peek(s->d1->buffered_messages);
- if ( item == NULL)
+ if (item == NULL)
return 0;
frag = (hm_fragment *)item->data;
-
+
/* Don't return if reassembly still in progress */
if (frag->reassembly != NULL)
return 0;
- if ( s->d1->handshake_read_seq == frag->msg_header.seq)
- {
+ if (s->d1->handshake_read_seq == frag->msg_header.seq) {
unsigned long frag_len = frag->msg_header.frag_len;
pqueue_pop(s->d1->buffered_messages);
- al=dtls1_preprocess_fragment(s,&frag->msg_header,max);
+ al = dtls1_preprocess_fragment(s, &frag->msg_header, max);
- if (al==0) /* no alert */
- {
- unsigned char *p = (unsigned char *)s->init_buf->data+DTLS1_HM_HEADER_LENGTH;
+ if (al == 0) /* no alert */
+ {
+ unsigned char *p = (unsigned char *)s->init_buf->data + DTLS1_HM_HEADER_LENGTH;
memcpy(&p[frag->msg_header.frag_off],
- frag->fragment,frag->msg_header.frag_len);
- }
+ frag->fragment, frag->msg_header.frag_len);
+ }
dtls1_hm_fragment_free(frag);
pitem_free(item);
- if (al==0)
- {
+ if (al == 0) {
*ok = 1;
return frag_len;
- }
+ }
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
s->init_num = 0;
*ok = 0;
return -1;
- }
- else
+ } else
return 0;
- }
+}
static int
-dtls1_reassemble_fragment(SSL *s, struct hm_header_st* msg_hdr, int *ok)
- {
+dtls1_reassemble_fragment(SSL *s, struct hm_header_st* msg_hdr, int *ok) {
hm_fragment *frag = NULL;
pitem *item = NULL;
int i = -1, is_complete;
unsigned char seq64be[8];
unsigned long frag_len = msg_hdr->frag_len, max_len;
- if ((msg_hdr->frag_off+frag_len) > msg_hdr->msg_len)
+ if ((msg_hdr->frag_off + frag_len) > msg_hdr->msg_len)
goto err;
/* Determine maximum allowed message size. Depends on (user set)
@@ -608,104 +587,99 @@ dtls1_reassemble_fragment(SSL *s, struct hm_header_st* msg_hdr, int *ok)
else
max_len = DTLS1_HM_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH;
- if ((msg_hdr->frag_off+frag_len) > max_len)
+ if ((msg_hdr->frag_off + frag_len) > max_len)
goto err;
/* Try to find item in queue */
- memset(seq64be,0,sizeof(seq64be));
- seq64be[6] = (unsigned char) (msg_hdr->seq>>8);
- seq64be[7] = (unsigned char) msg_hdr->seq;
+ memset(seq64be, 0, sizeof(seq64be));
+ seq64be[6] = (unsigned char)(msg_hdr->seq >> 8);
+ seq64be[7] = (unsigned char)msg_hdr->seq;
item = pqueue_find(s->d1->buffered_messages, seq64be);
- if (item == NULL)
- {
+ if (item == NULL) {
frag = dtls1_hm_fragment_new(msg_hdr->msg_len, 1);
- if ( frag == NULL)
+ if (frag == NULL)
goto err;
memcpy(&(frag->msg_header), msg_hdr, sizeof(*msg_hdr));
frag->msg_header.frag_len = frag->msg_header.msg_len;
frag->msg_header.frag_off = 0;
- }
- else
+ } else
frag = (hm_fragment*) item->data;
/* If message is already reassembled, this must be a
* retransmit and can be dropped.
*/
- if (frag->reassembly == NULL)
- {
+ if (frag->reassembly == NULL) {
unsigned char devnull [256];
- while (frag_len)
- {
- i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
- devnull,
- frag_len>sizeof(devnull)?sizeof(devnull):frag_len,0);
- if (i<=0) goto err;
+ while (frag_len) {
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
+ devnull, frag_len > sizeof(devnull) ?
+ sizeof(devnull) : frag_len, 0);
+ if (i <= 0)
+ goto err;
frag_len -= i;
- }
- return DTLS1_HM_FRAGMENT_RETRY;
}
+ return DTLS1_HM_FRAGMENT_RETRY;
+ }
/* read the body of the fragment (header has already been read */
- i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
- frag->fragment + msg_hdr->frag_off,frag_len,0);
- if (i<=0 || (unsigned long)i!=frag_len)
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
+ frag->fragment + msg_hdr->frag_off, frag_len, 0);
+ if (i <= 0 || (unsigned long)i != frag_len)
goto err;
RSMBLY_BITMASK_MARK(frag->reassembly, (long)msg_hdr->frag_off,
- (long)(msg_hdr->frag_off + frag_len));
+ (long)(msg_hdr->frag_off + frag_len));
RSMBLY_BITMASK_IS_COMPLETE(frag->reassembly, (long)msg_hdr->msg_len,
- is_complete);
+ is_complete);
- if (is_complete)
- {
+ if (is_complete) {
OPENSSL_free(frag->reassembly);
frag->reassembly = NULL;
- }
+ }
- if (item == NULL)
- {
- memset(seq64be,0,sizeof(seq64be));
- seq64be[6] = (unsigned char)(msg_hdr->seq>>8);
+ if (item == NULL) {
+ memset(seq64be, 0, sizeof(seq64be));
+ seq64be[6] = (unsigned char)(msg_hdr->seq >> 8);
seq64be[7] = (unsigned char)(msg_hdr->seq);
item = pitem_new(seq64be, frag);
- if (item == NULL)
- {
+ if (item == NULL) {
goto err;
i = -1;
- }
+ }
pqueue_insert(s->d1->buffered_messages, item);
- }
+ }
return DTLS1_HM_FRAGMENT_RETRY;
err:
- if (frag != NULL) dtls1_hm_fragment_free(frag);
- if (item != NULL) OPENSSL_free(item);
+ if (frag != NULL)
+ dtls1_hm_fragment_free(frag);
+ if (item != NULL)
+ OPENSSL_free(item);
*ok = 0;
return i;
- }
+}
static int
-dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok)
-{
- int i=-1;
+dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok) {
+ int i = -1;
hm_fragment *frag = NULL;
pitem *item = NULL;
unsigned char seq64be[8];
unsigned long frag_len = msg_hdr->frag_len;
- if ((msg_hdr->frag_off+frag_len) > msg_hdr->msg_len)
+ if ((msg_hdr->frag_off + frag_len) > msg_hdr->msg_len)
goto err;
/* Try to find item in queue, to prevent duplicate entries */
- memset(seq64be,0,sizeof(seq64be));
- seq64be[6] = (unsigned char) (msg_hdr->seq>>8);
+ memset(seq64be, 0, sizeof(seq64be));
+ seq64be[6] = (unsigned char) (msg_hdr->seq >> 8);
seq64be[7] = (unsigned char) msg_hdr->seq;
item = pqueue_find(s->d1->buffered_messages, seq64be);
@@ -721,92 +695,89 @@ dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok)
* retransmit.
*/
if (msg_hdr->seq <= s->d1->handshake_read_seq ||
- msg_hdr->seq > s->d1->handshake_read_seq + 10 || item != NULL ||
- (s->d1->handshake_read_seq == 0 && msg_hdr->type == SSL3_MT_FINISHED))
- {
+ msg_hdr->seq > s->d1->handshake_read_seq + 10 || item != NULL ||
+ (s->d1->handshake_read_seq == 0 && msg_hdr->type == SSL3_MT_FINISHED)) {
unsigned char devnull [256];
- while (frag_len)
- {
- i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
- devnull,
- frag_len>sizeof(devnull)?sizeof(devnull):frag_len,0);
- if (i<=0) goto err;
+ while (frag_len) {
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
+ devnull, frag_len > sizeof(devnull) ?
+ sizeof(devnull) : frag_len, 0);
+ if (i <= 0)
+ goto err;
frag_len -= i;
- }
}
- else
- {
+ } else {
if (frag_len && frag_len < msg_hdr->msg_len)
return dtls1_reassemble_fragment(s, msg_hdr, ok);
frag = dtls1_hm_fragment_new(frag_len, 0);
- if ( frag == NULL)
+ if (frag == NULL)
goto err;
memcpy(&(frag->msg_header), msg_hdr, sizeof(*msg_hdr));
- if (frag_len)
- {
+ if (frag_len) {
/* read the body of the fragment (header has already been read */
- i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
- frag->fragment,frag_len,0);
- if (i<=0 || (unsigned long)i!=frag_len)
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
+ frag->fragment, frag_len, 0);
+ if (i <= 0 || (unsigned long)i != frag_len)
goto err;
- }
+ }
- memset(seq64be,0,sizeof(seq64be));
- seq64be[6] = (unsigned char)(msg_hdr->seq>>8);
+ memset(seq64be, 0, sizeof(seq64be));
+ seq64be[6] = (unsigned char)(msg_hdr->seq >> 8);
seq64be[7] = (unsigned char)(msg_hdr->seq);
item = pitem_new(seq64be, frag);
- if ( item == NULL)
+ if (item == NULL)
goto err;
pqueue_insert(s->d1->buffered_messages, item);
- }
+ }
return DTLS1_HM_FRAGMENT_RETRY;
err:
- if ( frag != NULL) dtls1_hm_fragment_free(frag);
- if ( item != NULL) OPENSSL_free(item);
+ if (frag != NULL)
+ dtls1_hm_fragment_free(frag);
+ if (item != NULL)
+ OPENSSL_free(item);
*ok = 0;
return i;
- }
+}
static long
dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
- {
+{
unsigned char wire[DTLS1_HM_HEADER_LENGTH];
unsigned long len, frag_off, frag_len;
- int i,al;
+ int i, al;
struct hm_header_st msg_hdr;
/* see if we have the required fragment already */
- if ((frag_len = dtls1_retrieve_buffered_fragment(s,max,ok)) || *ok)
- {
- if (*ok) s->init_num = frag_len;
+ if ((frag_len = dtls1_retrieve_buffered_fragment(s, max, ok)) || *ok) {
+ if (*ok)
+ s->init_num = frag_len;
return frag_len;
- }
+ }
/* read handshake message header */
- i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,wire,
- DTLS1_HM_HEADER_LENGTH, 0);
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, wire,
+ DTLS1_HM_HEADER_LENGTH, 0);
if (i <= 0) /* nbio, or an error */
- {
- s->rwstate=SSL_READING;
+ {
+ s->rwstate = SSL_READING;
*ok = 0;
return i;
- }
+ }
/* Handshake fails if message header is incomplete */
- if (i != DTLS1_HM_HEADER_LENGTH)
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT,SSL_R_UNEXPECTED_MESSAGE);
+ if (i != DTLS1_HM_HEADER_LENGTH) {
+ al = SSL_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
- }
+ }
/* parse the message fragment header */
dtls1_get_message_header(wire, &msg_hdr);
@@ -828,62 +799,56 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
return dtls1_reassemble_fragment(s, &msg_hdr, ok);
if (!s->server && s->d1->r_msg_hdr.frag_off == 0 &&
- wire[0] == SSL3_MT_HELLO_REQUEST)
- {
+ wire[0] == SSL3_MT_HELLO_REQUEST) {
/* The server may always send 'Hello Request' messages --
* we are doing a handshake anyway now, so ignore them
* if their format is correct. Does not count for
* 'Finished' MAC. */
- if (wire[1] == 0 && wire[2] == 0 && wire[3] == 0)
- {
+ if (wire[1] == 0 && wire[2] == 0 && wire[3] == 0) {
if (s->msg_callback)
- s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
- wire, DTLS1_HM_HEADER_LENGTH, s,
- s->msg_callback_arg);
-
+ s->msg_callback(0, s->version,
+ SSL3_RT_HANDSHAKE, wire,
+ DTLS1_HM_HEADER_LENGTH, s,
+ s->msg_callback_arg);
+
s->init_num = 0;
- return dtls1_get_message_fragment(s, st1, stn,
- max, ok);
- }
+ return dtls1_get_message_fragment(s, st1, stn, max, ok);
+ }
else /* Incorrectly formated Hello request */
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT,SSL_R_UNEXPECTED_MESSAGE);
+ {
+ al = SSL_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
- }
}
+ }
- if ((al=dtls1_preprocess_fragment(s,&msg_hdr,max)))
+ if ((al = dtls1_preprocess_fragment(s, &msg_hdr, max)))
goto f_err;
/* XDTLS: ressurect this when restart is in place */
- s->state=stn;
+ s->state = stn;
- if ( frag_len > 0)
- {
- unsigned char *p=(unsigned char *)s->init_buf->data+DTLS1_HM_HEADER_LENGTH;
+ if (frag_len > 0) {
+ unsigned char *p = (unsigned char *)s->init_buf->data + DTLS1_HM_HEADER_LENGTH;
- i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
- &p[frag_off],frag_len,0);
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
+ &p[frag_off], frag_len, 0);
/* XDTLS: fix this--message fragments cannot span multiple packets */
- if (i <= 0)
- {
- s->rwstate=SSL_READING;
+ if (i <= 0) {
+ s->rwstate = SSL_READING;
*ok = 0;
return i;
- }
}
- else
+ } else
i = 0;
/* XDTLS: an incorrectly formatted fragment should cause the
* handshake to fail */
- if (i != (int)frag_len)
- {
- al=SSL3_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT,SSL3_AD_ILLEGAL_PARAMETER);
+ if (i != (int)frag_len) {
+ al = SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT, SSL3_AD_ILLEGAL_PARAMETER);
goto f_err;
- }
+ }
*ok = 1;
@@ -895,62 +860,59 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
return frag_len;
f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
s->init_num = 0;
- *ok=0;
- return(-1);
- }
+ *ok = 0;
+ return (-1);
+}
-int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen)
- {
- unsigned char *p,*d;
+int
+dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen)
+{
+ unsigned char *p, *d;
int i;
unsigned long l;
- if (s->state == a)
- {
- d=(unsigned char *)s->init_buf->data;
- p= &(d[DTLS1_HM_HEADER_LENGTH]);
+ if (s->state == a) {
+ d = (unsigned char *)s->init_buf->data;
+ p = &(d[DTLS1_HM_HEADER_LENGTH]);
- i=s->method->ssl3_enc->final_finish_mac(s,
- sender,slen,s->s3->tmp.finish_md);
+ i = s->method->ssl3_enc->final_finish_mac(s,
+ sender, slen, s->s3->tmp.finish_md);
s->s3->tmp.finish_md_len = i;
memcpy(p, s->s3->tmp.finish_md, i);
- p+=i;
- l=i;
+ p += i;
+ l = i;
- /* Copy the finished so we can use it for
- * renegotiation checks
- */
- if(s->type == SSL_ST_CONNECT)
- {
- OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
- memcpy(s->s3->previous_client_finished,
- s->s3->tmp.finish_md, i);
- s->s3->previous_client_finished_len=i;
- }
- else
- {
- OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
- memcpy(s->s3->previous_server_finished,
- s->s3->tmp.finish_md, i);
- s->s3->previous_server_finished_len=i;
+ /* Copy the finished so we can use it for
+ * renegotiation checks
+ */
+ if (s->type == SSL_ST_CONNECT) {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_client_finished,
+ s->s3->tmp.finish_md, i);
+ s->s3->previous_client_finished_len = i;
+ } else {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_server_finished,
+ s->s3->tmp.finish_md, i);
+ s->s3->previous_server_finished_len = i;
}
d = dtls1_set_message_header(s, d, SSL3_MT_FINISHED, l, 0, l);
- s->init_num=(int)l+DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
+ s->init_num = (int)l + DTLS1_HM_HEADER_LENGTH;
+ s->init_off = 0;
/* buffer the message to handle re-xmits */
dtls1_buffer_message(s, 0);
- s->state=b;
- }
+ s->state = b;
+ }
/* SSL3_ST_SEND_xxxxxx_HELLO_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
+ return (dtls1_do_write(s, SSL3_RT_HANDSHAKE));
+}
/* for these 2 messages, we need to
* ssl->enc_read_ctx re-init
@@ -960,161 +922,154 @@ int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen)
* ssl->session->read_compression assign
* ssl->session->read_hash assign
*/
-int dtls1_send_change_cipher_spec(SSL *s, int a, int b)
- {
+int
+dtls1_send_change_cipher_spec(SSL *s, int a, int b)
+{
unsigned char *p;
- if (s->state == a)
- {
- p=(unsigned char *)s->init_buf->data;
+ if (s->state == a) {
+ p = (unsigned char *)s->init_buf->data;
*p++=SSL3_MT_CCS;
s->d1->handshake_write_seq = s->d1->next_handshake_write_seq;
- s->init_num=DTLS1_CCS_HEADER_LENGTH;
+ s->init_num = DTLS1_CCS_HEADER_LENGTH;
if (s->version == DTLS1_BAD_VER) {
s->d1->next_handshake_write_seq++;
- s2n(s->d1->handshake_write_seq,p);
- s->init_num+=2;
+ s2n(s->d1->handshake_write_seq, p);
+ s->init_num += 2;
}
- s->init_off=0;
+ s->init_off = 0;
- dtls1_set_message_header_int(s, SSL3_MT_CCS, 0,
- s->d1->handshake_write_seq, 0, 0);
+ dtls1_set_message_header_int(s, SSL3_MT_CCS, 0,
+ s->d1->handshake_write_seq, 0, 0);
/* buffer the message to handle re-xmits */
dtls1_buffer_message(s, 1);
- s->state=b;
- }
+ s->state = b;
+ }
/* SSL3_ST_CW_CHANGE_B */
- return(dtls1_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
- }
+ return (dtls1_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC));
+}
-static int dtls1_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
- {
+static int
+dtls1_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
+{
int n;
unsigned char *p;
- n=i2d_X509(x,NULL);
- if (!BUF_MEM_grow_clean(buf,(int)(n+(*l)+3)))
- {
- SSLerr(SSL_F_DTLS1_ADD_CERT_TO_BUF,ERR_R_BUF_LIB);
+ n = i2d_X509(x, NULL);
+ if (!BUF_MEM_grow_clean(buf,(int)(n + (*l) + 3))) {
+ SSLerr(SSL_F_DTLS1_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
return 0;
- }
- p=(unsigned char *)&(buf->data[*l]);
- l2n3(n,p);
- i2d_X509(x,&p);
- *l+=n+3;
+ }
+ p = (unsigned char *)&(buf->data[*l]);
+ l2n3(n, p);
+ i2d_X509(x, &p);
+ *l += n + 3;
return 1;
- }
-unsigned long dtls1_output_cert_chain(SSL *s, X509 *x)
- {
+}
+
+unsigned long
+dtls1_output_cert_chain(SSL *s, X509 *x)
+{
unsigned char *p;
int i;
- unsigned long l= 3 + DTLS1_HM_HEADER_LENGTH;
+ unsigned long l = 3 + DTLS1_HM_HEADER_LENGTH;
BUF_MEM *buf;
/* TLSv1 sends a chain with nothing in it, instead of an alert */
- buf=s->init_buf;
- if (!BUF_MEM_grow_clean(buf,10))
- {
- SSLerr(SSL_F_DTLS1_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
- return(0);
- }
- if (x != NULL)
- {
+ buf = s->init_buf;
+ if (!BUF_MEM_grow_clean(buf, 10)) {
+ SSLerr(SSL_F_DTLS1_OUTPUT_CERT_CHAIN, ERR_R_BUF_LIB);
+ return (0);
+ }
+ if (x != NULL) {
X509_STORE_CTX xs_ctx;
- if (!X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,x,NULL))
- {
- SSLerr(SSL_F_DTLS1_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB);
- return(0);
- }
-
+ if (!X509_STORE_CTX_init(&xs_ctx, s->ctx->cert_store, x, NULL)) {
+ SSLerr(SSL_F_DTLS1_OUTPUT_CERT_CHAIN, ERR_R_X509_LIB);
+ return (0);
+ }
+
X509_verify_cert(&xs_ctx);
/* Don't leave errors in the queue */
ERR_clear_error();
- for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
- {
+ for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
x = sk_X509_value(xs_ctx.chain, i);
- if (!dtls1_add_cert_to_buf(buf, &l, x))
- {
+ if (!dtls1_add_cert_to_buf(buf, &l, x)) {
X509_STORE_CTX_cleanup(&xs_ctx);
return 0;
- }
- }
- X509_STORE_CTX_cleanup(&xs_ctx);
- }
- /* Thawte special :-) */
- for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
- {
- x=sk_X509_value(s->ctx->extra_certs,i);
+ }
+ }
+ X509_STORE_CTX_cleanup(&xs_ctx);
+ }
+ /* Thawte special :-) */
+ for (i = 0; i < sk_X509_num(s->ctx->extra_certs); i++) {
+ x = sk_X509_value(s->ctx->extra_certs, i);
if (!dtls1_add_cert_to_buf(buf, &l, x))
return 0;
- }
+ }
- l-= (3 + DTLS1_HM_HEADER_LENGTH);
+ l -= (3 + DTLS1_HM_HEADER_LENGTH);
- p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH]);
- l2n3(l,p);
- l+=3;
- p=(unsigned char *)&(buf->data[0]);
+ p = (unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH]);
+ l2n3(l, p);
+ l += 3;
+ p = (unsigned char *)&(buf->data[0]);
p = dtls1_set_message_header(s, p, SSL3_MT_CERTIFICATE, l, 0, l);
- l+=DTLS1_HM_HEADER_LENGTH;
- return(l);
- }
+ l += DTLS1_HM_HEADER_LENGTH;
+ return (l);
+}
-int dtls1_read_failed(SSL *s, int code)
- {
- if ( code > 0)
- {
+int
+dtls1_read_failed(SSL *s, int code)
+{
+ if (code > 0) {
fprintf( stderr, "invalid state reached %s:%d", __FILE__, __LINE__);
return 1;
- }
+ }
- if (!dtls1_is_timer_expired(s))
- {
+ if (!dtls1_is_timer_expired(s)) {
/* not a timeout, none of our business,
let higher layers handle this. in fact it's probably an error */
return code;
- }
+ }
#ifndef OPENSSL_NO_HEARTBEATS
if (!SSL_in_init(s) && !s->tlsext_hb_pending) /* done, no need to send a retransmit */
#else
if (!SSL_in_init(s)) /* done, no need to send a retransmit */
#endif
- {
+ {
BIO_set_flags(SSL_get_rbio(s), BIO_FLAGS_READ);
return code;
- }
+ }
#if 0 /* for now, each alert contains only one record number */
item = pqueue_peek(state->rcvd_records);
- if ( item )
- {
+ if (item ) {
/* send an alert immediately for all the missing records */
- }
- else
+ } else
#endif
#if 0 /* no more alert sending, just retransmit the last set of messages */
- if ( state->timeout.read_timeouts >= DTLS1_TMO_READ_COUNT)
- ssl3_send_alert(s,SSL3_AL_WARNING,
- DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
+ if (state->timeout.read_timeouts >= DTLS1_TMO_READ_COUNT)
+ ssl3_send_alert(s, SSL3_AL_WARNING,
+ DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
#endif
return dtls1_handle_timeout(s);
- }
+}
int
dtls1_get_queue_priority(unsigned short seq, int is_ccs)
- {
+{
/* The index of the retransmission queue actually is the message sequence number,
* since the queue only contains messages of a single handshake. However, the
* ChangeCipherSpec has no message sequence number and so using only the sequence
@@ -1124,11 +1079,11 @@ dtls1_get_queue_priority(unsigned short seq, int is_ccs)
* index (important for priority queues) and fits in the unsigned short variable.
*/
return seq * 2 - is_ccs;
- }
+}
int
dtls1_retransmit_buffered_messages(SSL *s)
- {
+{
pqueue sent = s->d1->sent_messages;
piterator iter;
pitem *item;
@@ -1137,24 +1092,23 @@ dtls1_retransmit_buffered_messages(SSL *s)
iter = pqueue_iterator(sent);
- for ( item = pqueue_next(&iter); item != NULL; item = pqueue_next(&iter))
- {
+ for (item = pqueue_next(&iter); item != NULL; item = pqueue_next(&iter)) {
frag = (hm_fragment *)item->data;
- if ( dtls1_retransmit_message(s,
- (unsigned short)dtls1_get_queue_priority(frag->msg_header.seq, frag->msg_header.is_ccs),
- 0, &found) <= 0 && found)
- {
+ if (dtls1_retransmit_message(s,
+ (unsigned short)dtls1_get_queue_priority(
+ frag->msg_header.seq, frag->msg_header.is_ccs), 0,
+ &found) <= 0 && found) {
fprintf(stderr, "dtls1_retransmit_message() failed\n");
return -1;
- }
}
+ }
return 1;
- }
+}
int
dtls1_buffer_message(SSL *s, int is_ccs)
- {
+{
pitem *item;
hm_fragment *frag;
unsigned char seq64be[8];
@@ -1167,16 +1121,13 @@ dtls1_buffer_message(SSL *s, int is_ccs)
memcpy(frag->fragment, s->init_buf->data, s->init_num);
- if ( is_ccs)
- {
- OPENSSL_assert(s->d1->w_msg_hdr.msg_len +
- ((s->version==DTLS1_VERSION)?DTLS1_CCS_HEADER_LENGTH:3) == (unsigned int)s->init_num);
- }
- else
- {
- OPENSSL_assert(s->d1->w_msg_hdr.msg_len +
- DTLS1_HM_HEADER_LENGTH == (unsigned int)s->init_num);
- }
+ if (is_ccs) {
+ OPENSSL_assert(s->d1->w_msg_hdr.msg_len +
+ ((s->version == DTLS1_VERSION) ? DTLS1_CCS_HEADER_LENGTH : 3) == (unsigned int)s->init_num);
+ } else {
+ OPENSSL_assert(s->d1->w_msg_hdr.msg_len +
+ DTLS1_HM_HEADER_LENGTH == (unsigned int)s->init_num);
+ }
frag->msg_header.msg_len = s->d1->w_msg_hdr.msg_len;
frag->msg_header.seq = s->d1->w_msg_hdr.seq;
@@ -1191,38 +1142,37 @@ dtls1_buffer_message(SSL *s, int is_ccs)
frag->msg_header.saved_retransmit_state.compress = s->compress;
frag->msg_header.saved_retransmit_state.session = s->session;
frag->msg_header.saved_retransmit_state.epoch = s->d1->w_epoch;
-
- memset(seq64be,0,sizeof(seq64be));
+
+ memset(seq64be, 0, sizeof(seq64be));
seq64be[6] = (unsigned char)(dtls1_get_queue_priority(frag->msg_header.seq,
- frag->msg_header.is_ccs)>>8);
+ frag->msg_header.is_ccs) >> 8);
seq64be[7] = (unsigned char)(dtls1_get_queue_priority(frag->msg_header.seq,
- frag->msg_header.is_ccs));
+ frag->msg_header.is_ccs));
item = pitem_new(seq64be, frag);
- if ( item == NULL)
- {
+ if (item == NULL) {
dtls1_hm_fragment_free(frag);
return 0;
- }
+ }
#if 0
- fprintf( stderr, "buffered messge: \ttype = %xx\n", msg_buf->type);
- fprintf( stderr, "\t\t\t\t\tlen = %d\n", msg_buf->len);
- fprintf( stderr, "\t\t\t\t\tseq_num = %d\n", msg_buf->seq_num);
+ fprintf(stderr, "buffered messge: \ttype = %xx\n", msg_buf->type);
+ fprintf(stderr, "\t\t\t\t\tlen = %d\n", msg_buf->len);
+ fprintf(stderr, "\t\t\t\t\tseq_num = %d\n", msg_buf->seq_num);
#endif
pqueue_insert(s->d1->sent_messages, item);
return 1;
- }
+}
int
dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off,
- int *found)
- {
+ int *found)
+{
int ret;
/* XDTLS: for now assuming that read/writes are blocking */
pitem *item;
- hm_fragment *frag ;
+ hm_fragment *frag;
unsigned long header_length;
unsigned char seq64be[8];
struct dtls1_retransmit_state saved_state;
@@ -1234,33 +1184,32 @@ dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off,
*/
/* XDTLS: the requested message ought to be found, otherwise error */
- memset(seq64be,0,sizeof(seq64be));
- seq64be[6] = (unsigned char)(seq>>8);
+ memset(seq64be, 0, sizeof(seq64be));
+ seq64be[6] = (unsigned char)(seq >> 8);
seq64be[7] = (unsigned char)seq;
item = pqueue_find(s->d1->sent_messages, seq64be);
- if ( item == NULL)
- {
+ if (item == NULL) {
fprintf(stderr, "retransmit: message %d non-existant\n", seq);
*found = 0;
return 0;
- }
+ }
*found = 1;
frag = (hm_fragment *)item->data;
- if ( frag->msg_header.is_ccs)
+ if (frag->msg_header.is_ccs)
header_length = DTLS1_CCS_HEADER_LENGTH;
else
header_length = DTLS1_HM_HEADER_LENGTH;
- memcpy(s->init_buf->data, frag->fragment,
- frag->msg_header.msg_len + header_length);
- s->init_num = frag->msg_header.msg_len + header_length;
+ memcpy(s->init_buf->data, frag->fragment,
+ frag->msg_header.msg_len + header_length);
+ s->init_num = frag->msg_header.msg_len + header_length;
- dtls1_set_message_header_int(s, frag->msg_header.type,
- frag->msg_header.msg_len, frag->msg_header.seq, 0,
- frag->msg_header.frag_len);
+ dtls1_set_message_header_int(s, frag->msg_header.type,
+ frag->msg_header.msg_len, frag->msg_header.seq, 0,
+ frag->msg_header.frag_len);
/* save current state */
saved_state.enc_write_ctx = s->enc_write_ctx;
@@ -1269,34 +1218,32 @@ dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off,
saved_state.session = s->session;
saved_state.epoch = s->d1->w_epoch;
saved_state.epoch = s->d1->w_epoch;
-
+
s->d1->retransmitting = 1;
-
+
/* restore state in which the message was originally sent */
s->enc_write_ctx = frag->msg_header.saved_retransmit_state.enc_write_ctx;
s->write_hash = frag->msg_header.saved_retransmit_state.write_hash;
s->compress = frag->msg_header.saved_retransmit_state.compress;
s->session = frag->msg_header.saved_retransmit_state.session;
s->d1->w_epoch = frag->msg_header.saved_retransmit_state.epoch;
-
- if (frag->msg_header.saved_retransmit_state.epoch == saved_state.epoch - 1)
- {
+
+ if (frag->msg_header.saved_retransmit_state.epoch == saved_state.epoch - 1) {
memcpy(save_write_sequence, s->s3->write_sequence, sizeof(s->s3->write_sequence));
memcpy(s->s3->write_sequence, s->d1->last_write_sequence, sizeof(s->s3->write_sequence));
}
-
- ret = dtls1_do_write(s, frag->msg_header.is_ccs ?
- SSL3_RT_CHANGE_CIPHER_SPEC : SSL3_RT_HANDSHAKE);
-
+
+ ret = dtls1_do_write(s, frag->msg_header.is_ccs ?
+ SSL3_RT_CHANGE_CIPHER_SPEC : SSL3_RT_HANDSHAKE);
+
/* restore current state */
s->enc_write_ctx = saved_state.enc_write_ctx;
s->write_hash = saved_state.write_hash;
s->compress = saved_state.compress;
s->session = saved_state.session;
s->d1->w_epoch = saved_state.epoch;
-
- if (frag->msg_header.saved_retransmit_state.epoch == saved_state.epoch - 1)
- {
+
+ if (frag->msg_header.saved_retransmit_state.epoch == saved_state.epoch - 1) {
memcpy(s->d1->last_write_sequence, s->s3->write_sequence, sizeof(s->s3->write_sequence));
memcpy(s->s3->write_sequence, save_write_sequence, sizeof(s->s3->write_sequence));
}
@@ -1305,47 +1252,45 @@ dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off,
(void)BIO_flush(SSL_get_wbio(s));
return ret;
- }
+}
/* call this function when the buffered messages are no longer needed */
void
dtls1_clear_record_buffer(SSL *s)
- {
+{
pitem *item;
- for(item = pqueue_pop(s->d1->sent_messages);
- item != NULL; item = pqueue_pop(s->d1->sent_messages))
- {
+ for(item = pqueue_pop(s->d1->sent_messages); item != NULL;
+ item = pqueue_pop(s->d1->sent_messages)) {
dtls1_hm_fragment_free((hm_fragment *)item->data);
pitem_free(item);
- }
}
+}
unsigned char *
dtls1_set_message_header(SSL *s, unsigned char *p, unsigned char mt,
- unsigned long len, unsigned long frag_off, unsigned long frag_len)
- {
+ unsigned long len, unsigned long frag_off, unsigned long frag_len)
+{
/* Don't change sequence numbers while listening */
- if (frag_off == 0 && !s->d1->listen)
- {
+ if (frag_off == 0 && !s->d1->listen) {
s->d1->handshake_write_seq = s->d1->next_handshake_write_seq;
s->d1->next_handshake_write_seq++;
- }
+ }
dtls1_set_message_header_int(s, mt, len, s->d1->handshake_write_seq,
- frag_off, frag_len);
+ frag_off, frag_len);
return p += DTLS1_HM_HEADER_LENGTH;
- }
+}
/* don't actually do the writing, wait till the MTU has been retrieved */
static void
dtls1_set_message_header_int(SSL *s, unsigned char mt,
- unsigned long len, unsigned short seq_num, unsigned long frag_off,
- unsigned long frag_len)
- {
+ unsigned long len, unsigned short seq_num, unsigned long frag_off,
+unsigned long frag_len)
+{
struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr;
msg_hdr->type = mt;
@@ -1353,21 +1298,21 @@ dtls1_set_message_header_int(SSL *s, unsigned char mt,
msg_hdr->seq = seq_num;
msg_hdr->frag_off = frag_off;
msg_hdr->frag_len = frag_len;
- }
+}
static void
dtls1_fix_message_header(SSL *s, unsigned long frag_off,
- unsigned long frag_len)
- {
+ unsigned long frag_len)
+{
struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr;
msg_hdr->frag_off = frag_off;
msg_hdr->frag_len = frag_len;
- }
+}
static unsigned char *
dtls1_write_message_header(SSL *s, unsigned char *p)
- {
+{
struct hm_header_st *msg_hdr = &s->d1->w_msg_hdr;
*p++ = msg_hdr->type;
@@ -1378,33 +1323,32 @@ dtls1_write_message_header(SSL *s, unsigned char *p)
l2n3(msg_hdr->frag_len, p);
return p;
- }
+}
-unsigned int
+unsigned int
dtls1_min_mtu(void)
- {
- return (g_probable_mtu[(sizeof(g_probable_mtu) /
- sizeof(g_probable_mtu[0])) - 1]);
- }
+{
+ return (g_probable_mtu[(sizeof(g_probable_mtu) /
+ sizeof(g_probable_mtu[0])) - 1]);
+}
-static unsigned int
+static unsigned int
dtls1_guess_mtu(unsigned int curr_mtu)
- {
+{
unsigned int i;
- if ( curr_mtu == 0 )
- return g_probable_mtu[0] ;
+ if (curr_mtu == 0)
+ return g_probable_mtu[0];
- for ( i = 0; i < sizeof(g_probable_mtu)/sizeof(g_probable_mtu[0]); i++)
- if ( curr_mtu > g_probable_mtu[i])
+ for (i = 0; i < sizeof(g_probable_mtu)/sizeof(g_probable_mtu[0]); i++)
+ if (curr_mtu > g_probable_mtu[i])
return g_probable_mtu[i];
return curr_mtu;
- }
+}
void
-dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr)
- {
+dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr) {
memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
msg_hdr->type = *(data++);
n2l3(data, msg_hdr->msg_len);
@@ -1412,41 +1356,41 @@ dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr)
n2s(data, msg_hdr->seq);
n2l3(data, msg_hdr->frag_off);
n2l3(data, msg_hdr->frag_len);
- }
+}
void
-dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr)
- {
+dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr) {
memset(ccs_hdr, 0x00, sizeof(struct ccs_header_st));
ccs_hdr->type = *(data++);
- }
+}
-int dtls1_shutdown(SSL *s)
- {
+int
+dtls1_shutdown(SSL *s)
+{
int ret;
#ifndef OPENSSL_NO_SCTP
if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
- !(s->shutdown & SSL_SENT_SHUTDOWN))
- {
+ !(s->shutdown & SSL_SENT_SHUTDOWN)) {
ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
- if (ret < 0) return -1;
+ if (ret < 0)
+ return -1;
if (ret == 0)
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN, 1, NULL);
- }
+ }
#endif
ret = ssl3_shutdown(s);
#ifndef OPENSSL_NO_SCTP
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN, 0, NULL);
#endif
return ret;
- }
+}
#ifndef OPENSSL_NO_HEARTBEATS
int
dtls1_process_heartbeat(SSL *s)
- {
+{
unsigned char *p = &s->s3->rrec.data[0], *pl;
unsigned short hbtype;
unsigned int payload;
@@ -1454,8 +1398,8 @@ dtls1_process_heartbeat(SSL *s)
if (s->msg_callback)
s->msg_callback(0, s->version, TLS1_RT_HEARTBEAT,
- &s->s3->rrec.data[0], s->s3->rrec.length,
- s, s->msg_callback_arg);
+ &s->s3->rrec.data[0], s->s3->rrec.length,
+ s, s->msg_callback_arg);
/* Read type and payload length first */
if (1 + 2 + 16 > s->s3->rrec.length)
@@ -1466,12 +1410,11 @@ dtls1_process_heartbeat(SSL *s)
return 0; /* silently discard per RFC 6520 sec. 4 */
pl = p;
- if (hbtype == TLS1_HB_REQUEST)
- {
+ if (hbtype == TLS1_HB_REQUEST) {
unsigned char *buffer, *bp;
unsigned int write_length = 1 /* heartbeat type */ +
- 2 /* heartbeat length */ +
- payload + padding;
+ 2 /* heartbeat length */ +
+ payload + padding;
int r;
if (write_length > SSL3_RT_MAX_PLAIN_LENGTH)
@@ -1496,16 +1439,14 @@ dtls1_process_heartbeat(SSL *s)
if (r >= 0 && s->msg_callback)
s->msg_callback(1, s->version, TLS1_RT_HEARTBEAT,
- buffer, write_length,
- s, s->msg_callback_arg);
+ buffer, write_length,
+ s, s->msg_callback_arg);
OPENSSL_free(buffer);
if (r < 0)
return r;
- }
- else if (hbtype == TLS1_HB_RESPONSE)
- {
+ } else if (hbtype == TLS1_HB_RESPONSE) {
unsigned int seq;
/* We only send sequence numbers (2 bytes unsigned int),
@@ -1513,20 +1454,19 @@ dtls1_process_heartbeat(SSL *s)
* sequence number */
n2s(pl, seq);
- if (payload == 18 && seq == s->tlsext_hb_seq)
- {
+ if (payload == 18 && seq == s->tlsext_hb_seq) {
dtls1_stop_timer(s);
s->tlsext_hb_seq++;
s->tlsext_hb_pending = 0;
- }
}
+ }
return 0;
- }
+}
int
dtls1_heartbeat(SSL *s)
- {
+{
unsigned char *buf, *p;
int ret;
unsigned int payload = 18; /* Sequence number + random bytes */
@@ -1534,25 +1474,22 @@ dtls1_heartbeat(SSL *s)
/* Only send if peer supports and accepts HB requests... */
if (!(s->tlsext_heartbeat & SSL_TLSEXT_HB_ENABLED) ||
- s->tlsext_heartbeat & SSL_TLSEXT_HB_DONT_SEND_REQUESTS)
- {
- SSLerr(SSL_F_DTLS1_HEARTBEAT,SSL_R_TLS_HEARTBEAT_PEER_DOESNT_ACCEPT);
+ s->tlsext_heartbeat & SSL_TLSEXT_HB_DONT_SEND_REQUESTS) {
+ SSLerr(SSL_F_DTLS1_HEARTBEAT, SSL_R_TLS_HEARTBEAT_PEER_DOESNT_ACCEPT);
return -1;
- }
+ }
/* ...and there is none in flight yet... */
- if (s->tlsext_hb_pending)
- {
- SSLerr(SSL_F_DTLS1_HEARTBEAT,SSL_R_TLS_HEARTBEAT_PENDING);
+ if (s->tlsext_hb_pending) {
+ SSLerr(SSL_F_DTLS1_HEARTBEAT, SSL_R_TLS_HEARTBEAT_PENDING);
return -1;
- }
+ }
/* ...and no handshake in progress. */
- if (SSL_in_init(s) || s->in_handshake)
- {
- SSLerr(SSL_F_DTLS1_HEARTBEAT,SSL_R_UNEXPECTED_MESSAGE);
+ if (SSL_in_init(s) || s->in_handshake) {
+ SSLerr(SSL_F_DTLS1_HEARTBEAT, SSL_R_UNEXPECTED_MESSAGE);
return -1;
- }
+ }
/* Check if padding is too long, payload and padding
* must not exceed 2^14 - 3 = 16381 bytes in total.
@@ -1583,19 +1520,18 @@ dtls1_heartbeat(SSL *s)
RAND_pseudo_bytes(p, padding);
ret = dtls1_write_bytes(s, TLS1_RT_HEARTBEAT, buf, 3 + payload + padding);
- if (ret >= 0)
- {
+ if (ret >= 0) {
if (s->msg_callback)
s->msg_callback(1, s->version, TLS1_RT_HEARTBEAT,
- buf, 3 + payload + padding,
- s, s->msg_callback_arg);
+ buf, 3 + payload + padding,
+ s, s->msg_callback_arg);
dtls1_start_timer(s);
s->tlsext_hb_pending = 1;
- }
+ }
OPENSSL_free(buf);
return ret;
- }
+}
#endif