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authorLuke Leighton <lkcl@samba.org>1999-07-08 19:44:06 +0000
committerLuke Leighton <lkcl@samba.org>1999-07-08 19:44:06 +0000
commit820c38221126392955eb221c72aa02189fa91c7e (patch)
treea40de762768133c7912819dfd1825b68ec7b35c1 /source3/libsmb
parenta424da878f257768c140b1d010335735bd3da2c1 (diff)
downloadsamba-820c38221126392955eb221c72aa02189fa91c7e.tar.gz
samba-820c38221126392955eb221c72aa02189fa91c7e.tar.bz2
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fixed problem with NULL ntpasswd parameters causing crash in
static cli_calc_session_pwds(). this code used to be inside cli_session_setup() itself and worked on non-NULL local variables. (This used to be commit 7aff19ba57fd91572da7cbe16f118d11226590e3)
Diffstat (limited to 'source3/libsmb')
-rw-r--r--source3/libsmb/clientgen.c52
1 files changed, 43 insertions, 9 deletions
diff --git a/source3/libsmb/clientgen.c b/source3/libsmb/clientgen.c
index cc51ab0c4b..78c09d53e9 100644
--- a/source3/libsmb/clientgen.c
+++ b/source3/libsmb/clientgen.c
@@ -765,7 +765,7 @@ BOOL cli_session_setup_x(struct cli_state *cli,
cli_send_smb(cli, True);
if (!cli_receive_smb(cli))
{
- DEBUG(10,("cli_session_setup: receive smb failed\n"));
+ DEBUG(10,("cli_session_setup_x: receive smb failed\n"));
return False;
}
@@ -799,26 +799,59 @@ static BOOL cli_calc_session_pwds(struct cli_state *cli,
char *ntpass, int *ntpasslen,
BOOL ntlmv2)
{
+ BOOL ntpass_ok = ntpass != NULL && ntpasslen != NULL;
+
+ if (pass == NULL || passlen == NULL)
+ {
+ DEBUG(0,("cli_calc_session_pwds: pass and passlen are NULL\n"));
+ return False;
+ }
+ if ((ntpass != NULL || ntpasslen != NULL) &&
+ (ntpass == NULL || ntpasslen == NULL))
+ {
+ DEBUG(0,("cli_calc_session_pwds: ntpasswd pointers invalid\n"));
+ return False;
+ }
+
#ifdef DEBUG_PASSWORD
DEBUG(100,("cli_calc_session_pwds. pass, ntpass\n"));
dump_data(100, pass, *passlen);
- dump_data(100, ntpass, *ntpasslen);
+ if (ntpass_ok)
+ {
+ dump_data(100, ntpass, *ntpasslen);
+ }
#endif
if (!IS_BITS_SET_ALL(cli->sec_mode, 1))
{
/* if in share level security then don't send a password now */
- fstrcpy(pword, "");
+ pword[0] = '\0';
*passlen=1;
- fstrcpy(ntpword, "");
- *ntpasslen=1;
+ if (ntpass_ok)
+ {
+ ntpword[0] = '\0';
+ *ntpasslen=1;
+ }
+ return True;
}
else if ((*passlen == 0 || *passlen == 1) && (pass[0] == '\0'))
{
/* Null session connect. */
pword [0] = '\0';
- ntpword[0] = '\0';
+ if (ntpass_ok)
+ {
+ ntpword[0] = '\0';
+ *ntpasslen=1;
+ }
+
+ return True;
}
- else if (*passlen == 24 && *ntpasslen >= 24)
+
+ if (!ntpass_ok)
+ {
+ return False;
+ }
+
+ if (*passlen == 24 && *ntpasslen >= 24)
{
if (IS_BITS_SET_ALL(cli->sec_mode, 2))
{
@@ -828,7 +861,7 @@ static BOOL cli_calc_session_pwds(struct cli_state *cli,
}
else
{
- DEBUG(0,("cli_session_setup: encrypted passwords not supported by server\n"));
+ DEBUG(0,("cli_calc_session_pwds: encrypted passwords not supported by server\n"));
return False;
}
}
@@ -839,8 +872,9 @@ static BOOL cli_calc_session_pwds(struct cli_state *cli,
fstrcpy(ntpword, "");
*ntpasslen = 0;
}
- else /* passlen != 0 && ntpasslen != 0 && server supports encryption */
+ else if (ntpasslen != NULL)
{
+ /* passlen != 0, ntpasslen != 0 && server supports encryption */
if (ntlmv2)
{
/* plain-text password requesting to be encrypted */