diff options
Diffstat (limited to 'source4/libcli/raw/smb_signing.c')
| -rw-r--r-- | source4/libcli/raw/smb_signing.c | 56 |
1 files changed, 20 insertions, 36 deletions
diff --git a/source4/libcli/raw/smb_signing.c b/source4/libcli/raw/smb_signing.c index 03794829c2..09da8e9983 100644 --- a/source4/libcli/raw/smb_signing.c +++ b/source4/libcli/raw/smb_signing.c @@ -21,8 +21,7 @@ */ #include "includes.h" -static void smbcli_free_signing_context(struct smb_signing_context *sign_info); -static BOOL smbcli_null_set_signing(struct smb_signing_context *sign_info); +static BOOL smbcli_set_signing_off(struct smb_signing_context *sign_info); /*********************************************************** SMB signing - Common code before we set a new signing implementation @@ -42,8 +41,6 @@ static BOOL set_smb_signing_common(struct smbcli_transport *transport) return False; } - smbcli_free_signing_context(&transport->negotiate.sign_info); - /* These calls are INCOMPATIBLE with SMB signing */ transport->negotiate.readbraw_supported = False; transport->negotiate.writebraw_supported = False; @@ -74,10 +71,7 @@ static BOOL signing_good(struct smb_signing_context *sign_info, /* If we have never seen a good packet, just turn it off */ DEBUG(5, ("signing_good: signing negotiated but not required and peer\n" "isn't sending correct signatures. Turning off.\n")); - sign_info->doing_signing = False; - smbcli_free_signing_context(sign_info); - - smbcli_null_set_signing(sign_info); + smbcli_set_signing_off(sign_info); return True; } else { /* bad packet after signing started - fail and disconnect. */ @@ -162,25 +156,23 @@ BOOL check_signed_incoming_message(struct request_buffer *in, DATA_BLOB *mac_key good = (memcmp(server_sent_mac, calc_md5_mac, 8) == 0); - if (i == 0) { - if (!good) { - DEBUG(5, ("check_signed_incoming_message: BAD SIG (seq: %d): wanted SMB signature of\n", seq_num + i)); - dump_data(5, calc_md5_mac, 8); - - DEBUG(5, ("check_signed_incoming_message: BAD SIG (seq: %d): got SMB signature of\n", seq_num + i)); - dump_data(5, server_sent_mac, 8); - } else { - DEBUG(15, ("check_signed_incoming_message: GOOD SIG (seq: %d): got SMB signature of\n", seq_num + i)); - dump_data(5, server_sent_mac, 8); - } - } - if (good) break; } if (good && i != 0) { DEBUG(0,("SIGNING OFFSET %d (should be %d)\n", i, seq_num)); } + + if (!good) { + DEBUG(5, ("check_signed_incoming_message: BAD SIG (seq: %d): wanted SMB signature of\n", seq_num + i)); + dump_data(5, calc_md5_mac, 8); + + DEBUG(5, ("check_signed_incoming_message: BAD SIG (seq: %d): got SMB signature of\n", seq_num + i)); + dump_data(5, server_sent_mac, 8); + } else { + DEBUG(15, ("check_signed_incoming_message: GOOD SIG (seq: %d): got SMB signature of\n", seq_num + i)); + dump_data(5, server_sent_mac, 8); + } return good; } @@ -230,14 +222,15 @@ void smbcli_request_calculate_sign_mac(struct smbcli_request *req) /** - SMB signing - NULL implementation - setup the MAC key. + SMB signing - NULL implementation @note Used as an initialisation only - it will not correctly shut down a real signing mechanism */ -static BOOL smbcli_null_set_signing(struct smb_signing_context *sign_info) +static BOOL smbcli_set_signing_off(struct smb_signing_context *sign_info) { - sign_info->mac_key = data_blob(NULL, 0); + sign_info->doing_signing = False; + data_blob_free(&sign_info->mac_key); sign_info->signing_state = SMB_SIGNING_ENGINE_OFF; return True; } @@ -245,14 +238,13 @@ static BOOL smbcli_null_set_signing(struct smb_signing_context *sign_info) /** SMB signing - TEMP implementation - setup the MAC key. - @note Used as an initialisation only - it will not correctly - shut down a real signing mechanism */ BOOL smbcli_temp_set_signing(struct smbcli_transport *transport) { if (!set_smb_signing_common(transport)) { return False; } + smbcli_set_signing_off(&transport->negotiate.sign_info); transport->negotiate.sign_info.mac_key = data_blob(NULL, 0); transport->negotiate.sign_info.signing_state = SMB_SIGNING_ENGINE_BSRSPYL; @@ -260,15 +252,6 @@ BOOL smbcli_temp_set_signing(struct smbcli_transport *transport) return True; } -/** - * Free the signing context - */ -static void smbcli_free_signing_context(struct smb_signing_context *sign_info) -{ - data_blob_free(&sign_info->mac_key); - smbcli_null_set_signing(sign_info); -} - /*********************************************************** SMB signing - Simple implementation - check a MAC sent by server. ************************************************************/ @@ -355,7 +338,8 @@ BOOL smbcli_transport_simple_set_signing(struct smbcli_transport *transport, BOOL smbcli_init_signing(struct smbcli_transport *transport) { - if (!smbcli_null_set_signing(&transport->negotiate.sign_info)) { + transport->negotiate.sign_info.mac_key = data_blob(NULL, 0); + if (!smbcli_set_signing_off(&transport->negotiate.sign_info)) { return False; } |