[SCM] Samba Shared Repository - branch v3-3-test updated -
release-3-2-0pre2-5147-gd01cca5
Stefan Metzmacher
metze at samba.org
Thu Mar 19 14:05:20 GMT 2009
The branch, v3-3-test has been updated
via d01cca5e3ddb925696d49a1ea728013ec1032372 (commit)
from fecb980bc90ba4be1fa95b4a6e2aa6967d036656 (commit)
http://gitweb.samba.org/?p=samba.git;a=shortlog;h=v3-3-test
- Log -----------------------------------------------------------------
commit d01cca5e3ddb925696d49a1ea728013ec1032372
Author: Stefan Metzmacher <metze at samba.org>
Date: Wed Mar 18 07:56:51 2009 +0100
s3:libsmb: fix smb signing for fragmented trans/trans2/nttrans requests
Before we send the secondary requests we need to remove the
old mid=>seqnum mapping and reset cli->mid and make the new
mid=>seqnum mapping "persistent".
The bug we had in cli_send_trans was this:
The first cli_send_smb() incremented cli->mid
and the secondary requests used the incremented mid,
but as cli->outbuf still had the correct mid,
we send the correct mid to the server. The real problem
was that the cli_send_smb() function stored the seqnum
under the wrong mid.
cli_send_nttrans() was totally broken and now follows the
same logic as cli_send_trans().
The good thing is that in practice the problem is unlikely to happen,
because max_xmit is large enough to avoid secondary requests.
metze
(cherry picked from commit 880fbc4e8cd67de73c4bcda94489eb1e1422a04b)
(cherry picked from commit 70466990b4b7c68ae95dbbcf741cd3f41f2dd0b3)
-----------------------------------------------------------------------
Summary of changes:
source/libsmb/clitrans.c | 30 +++++++-----------------------
1 files changed, 7 insertions(+), 23 deletions(-)
Changeset truncated at 500 lines:
diff --git a/source/libsmb/clitrans.c b/source/libsmb/clitrans.c
index 4bb70f1..b42cde9 100644
--- a/source/libsmb/clitrans.c
+++ b/source/libsmb/clitrans.c
@@ -112,9 +112,6 @@ bool cli_send_trans(struct cli_state *cli, int trans,
this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
- client_set_trans_sign_state_off(cli, mid);
- client_set_trans_sign_state_on(cli, mid);
-
cli_set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
@@ -138,20 +135,14 @@ bool cli_send_trans(struct cli_state *cli, int trans,
memcpy(outdata,data+tot_data,this_ldata);
cli_setup_bcc(cli, outdata+this_ldata);
- /*
- * Save the mid we're using. We need this for finding
- * signing replies.
- */
- mid = cli->mid;
-
show_msg(cli->outbuf);
+
+ client_set_trans_sign_state_off(cli, mid);
+ cli->mid = mid;
if (!cli_send_smb(cli)) {
- client_set_trans_sign_state_off(cli, mid);
return False;
}
-
- /* Ensure we use the same mid for the secondaries. */
- cli->mid = mid;
+ client_set_trans_sign_state_on(cli, mid);
tot_data += this_ldata;
tot_param += this_lparam;
@@ -461,21 +452,14 @@ bool cli_send_nt_trans(struct cli_state *cli,
memcpy(outdata,data+tot_data,this_ldata);
cli_setup_bcc(cli, outdata+this_ldata);
- /*
- * Save the mid we're using. We need this for finding
- * signing replies.
- */
- mid = cli->mid;
-
show_msg(cli->outbuf);
+ client_set_trans_sign_state_off(cli, mid);
+ cli->mid = mid;
if (!cli_send_smb(cli)) {
- client_set_trans_sign_state_off(cli, mid);
return False;
}
-
- /* Ensure we use the same mid for the secondaries. */
- cli->mid = mid;
+ client_set_trans_sign_state_on(cli, mid);
tot_data += this_ldata;
tot_param += this_lparam;
--
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