ClearML/dropbear
1
0
Fork 0
mirror of https://github.com/clearml/dropbear synced 2025-04-25 16:39:28 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix zlib for split newkeys

Browse Source
This commit is contained in:
Matt Johnston 2013-04-11 23:03:58 +08:00
parent c0d7c6693f
commit adeb372a66
1 changed files with 17 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
common-kex.c
View File

@ -82,7 +82,8 @@ static const int DH_G_VAL = 2;
static void kexinitialise();
static void gen_new_keys();
#ifndef DISABLE_ZLIB
static void gen_new_zstreams();
static void gen_new_zstream_recv();
static void gen_new_zstream_trans();
#endif
static void read_kex_algos();
/* helper function for gen_new_keys */
@ -159,7 +160,7 @@ void send_msg_kexinit() {
}
void switch_keys() {
static void switch_keys() {
TRACE2(("enter switch_keys"))
if (!(ses.kexstate.sentkexinit && ses.kexstate.recvkexinit)) {
dropbear_exit("Unexpected newkeys message");
@ -170,12 +171,14 @@ void switch_keys() {
}
if (ses.kexstate.recvnewkeys && ses.newkeys->recv.valid) {
TRACE(("switch_keys recv"))
gen_new_zstream_recv();
ses.keys->recv = ses.newkeys->recv;
m_burn(&ses.newkeys->recv, sizeof(ses.newkeys->recv));
ses.newkeys->recv.valid = 0;
}
if (ses.kexstate.sentnewkeys && ses.newkeys->trans.valid) {
TRACE(("switch_keys trans"))
gen_new_zstream_trans();
ses.keys->trans = ses.newkeys->trans;
m_burn(&ses.newkeys->trans, sizeof(ses.newkeys->trans));
ses.newkeys->trans.valid = 0;
@ -386,10 +389,6 @@ static void gen_new_keys() {
ses.newkeys->recv.hash_index = find_hash(ses.newkeys->recv.algo_mac->hashdesc->name);
}
#ifndef DISABLE_ZLIB
gen_new_zstreams();
#endif
/* Ready to switch over */
ses.newkeys->trans.valid = 1;
ses.newkeys->recv.valid = 1;
@ -418,7 +417,7 @@ int is_compress_recv() {
/* Set up new zlib compression streams, close the old ones. Only
* called from gen_new_keys() */
static void gen_new_zstreams() {
static void gen_new_zstream_recv() {
/* create new zstreams */
if (ses.newkeys->recv.algo_comp == DROPBEAR_COMP_ZLIB
@ -433,6 +432,17 @@ static void gen_new_zstreams() {
} else {
ses.newkeys->recv.zstream = NULL;
}
/* clean up old keys */
if (ses.keys->recv.zstream != NULL) {
if (inflateEnd(ses.keys->recv.zstream) == Z_STREAM_ERROR) {
/* Z_DATA_ERROR is ok, just means that stream isn't ended */
dropbear_exit("Crypto error");
}
m_free(ses.keys->recv.zstream);
}
}
static void gen_new_zstream_trans() {
if (ses.newkeys->trans.algo_comp == DROPBEAR_COMP_ZLIB
|| ses.newkeys->trans.algo_comp == DROPBEAR_COMP_ZLIB_DELAY) {
@ -450,14 +460,6 @@ static void gen_new_zstreams() {
ses.newkeys->trans.zstream = NULL;
}
/* clean up old keys */
if (ses.keys->recv.zstream != NULL) {
if (inflateEnd(ses.keys->recv.zstream) == Z_STREAM_ERROR) {
/* Z_DATA_ERROR is ok, just means that stream isn't ended */
dropbear_exit("Crypto error");
}
m_free(ses.keys->recv.zstream);
}
if (ses.keys->trans.zstream != NULL) {
if (deflateEnd(ses.keys->trans.zstream) == Z_STREAM_ERROR) {
/* Z_DATA_ERROR is ok, just means that stream isn't ended */