struct smbXcli_conn;
struct smbXcli_req;
struct smbXcli_session;
+struct smbXcli_tcon;
struct smbXcli_conn {
int read_fd;
struct {
struct {
+ uint32_t capabilities;
uint16_t security_mode;
struct GUID guid;
} client;
struct smbXcli_session *prev, *next;
struct smbXcli_conn *conn;
+ struct {
+ uint16_t session_id;
+ } smb1;
+
struct {
uint64_t session_id;
uint16_t session_flags;
+ DATA_BLOB application_key;
DATA_BLOB signing_key;
bool should_sign;
+ bool should_encrypt;
+ DATA_BLOB encryption_key;
+ DATA_BLOB decryption_key;
+ uint64_t channel_nonce;
+ uint64_t channel_next;
DATA_BLOB channel_signing_key;
} smb2;
};
+struct smbXcli_tcon {
+ struct {
+ uint16_t tcon_id;
+ uint16_t optional_support;
+ uint32_t maximal_access;
+ uint32_t guest_maximal_access;
+ char *service;
+ char *fs_type;
+ } smb1;
+
+ struct {
+ uint32_t tcon_id;
+ uint8_t type;
+ uint32_t flags;
+ uint32_t capabilities;
+ uint32_t maximal_access;
+ } smb2;
+};
+
struct smbXcli_req_state {
struct tevent_context *ev;
struct smbXcli_conn *conn;
const uint8_t *dyn;
uint32_t dyn_len;
- uint8_t hdr[64];
+ uint8_t transform[SMB2_TF_HDR_SIZE];
+ uint8_t hdr[SMB2_HDR_BODY];
uint8_t pad[7]; /* padding space for compounding */
- /* always an array of 3 talloc elements */
+ /*
+ * always an array of 3 talloc elements
+ * (without a SMB2_TRANSFORM header!)
+ *
+ * HDR, BODY, DYN
+ */
struct iovec *recv_iov;
uint16_t credit_charge;
+ bool should_sign;
+ bool should_encrypt;
+
bool signing_skipped;
bool notify_async;
bool got_async;
const char *remote_name,
enum smb_signing_setting signing_state,
uint32_t smb1_capabilities,
- struct GUID *client_guid)
+ struct GUID *client_guid,
+ uint32_t smb2_capabilities)
{
struct smbXcli_conn *conn = NULL;
void *ss = NULL;
if (client_guid) {
conn->smb2.client.guid = *client_guid;
}
+ conn->smb2.client.capabilities = smb2_capabilities;
conn->smb2.cur_credits = 1;
conn->smb2.max_credits = 0;
uint16_t flags2;
uint32_t pid;
uint16_t tid;
- uint16_t uid;
uint16_t mid;
struct tevent_req *subreq;
NTSTATUS status;
pid = SVAL(state->smb1.hdr, HDR_PID);
pid |= SVAL(state->smb1.hdr, HDR_PIDHIGH)<<16;
tid = SVAL(state->smb1.hdr, HDR_TID);
- uid = SVAL(state->smb1.hdr, HDR_UID);
mid = SVAL(state->smb1.hdr, HDR_MID);
subreq = smb1cli_req_create(state, state->ev,
flags, 0,
flags2, 0,
0, /* timeout */
- pid, tid, uid,
+ pid, tid,
+ state->session,
0, NULL, /* vwv */
0, NULL); /* bytes */
if (subreq == NULL) {
uint32_t timeout_msec,
uint32_t pid,
uint16_t tid,
- uint16_t uid,
+ struct smbXcli_session *session,
uint8_t wct, uint16_t *vwv,
int iov_count,
struct iovec *bytes_iov)
struct smbXcli_req_state *state;
uint8_t flags = 0;
uint16_t flags2 = 0;
+ uint16_t uid = 0;
if (iov_count > MAX_SMB_IOV) {
/*
}
state->ev = ev;
state->conn = conn;
+ state->session = session;
+
+ if (session) {
+ uid = session->smb1.session_id;
+ }
state->smb1.recv_cmd = 0xFF;
state->smb1.recv_status = NT_STATUS_INTERNAL_ERROR;
uint32_t timeout_msec,
uint32_t pid,
uint16_t tid,
- uint16_t uid,
+ struct smbXcli_session *session,
uint8_t wct, uint16_t *vwv,
uint32_t num_bytes,
const uint8_t *bytes)
additional_flags, clear_flags,
additional_flags2, clear_flags2,
timeout_msec,
- pid, tid, uid,
+ pid, tid, session,
wct, vwv, 1, &iov);
if (req == NULL) {
return NULL;
if (session) {
uid = session->smb2.session_id;
+
+ state->smb2.should_sign = session->smb2.should_sign;
+ state->smb2.should_encrypt = session->smb2.should_encrypt;
+
+ /* TODO: turn on encryption based on the tree connect. */
+
+ if (cmd == SMB2_OP_SESSSETUP &&
+ session->smb2.signing_key.length != 0) {
+ state->smb2.should_sign = true;
+ }
+
+ if (cmd == SMB2_OP_SESSSETUP &&
+ session->smb2.channel_signing_key.length == 0) {
+ state->smb2.should_encrypt = false;
+ }
+
+ if (state->smb2.should_encrypt) {
+ state->smb2.should_sign = false;
+ }
}
state->smb2.recv_iov = talloc_zero_array(state, struct iovec, 3);
state->smb2.dyn = dyn;
state->smb2.dyn_len = dyn_len;
+ if (state->smb2.should_encrypt) {
+ SIVAL(state->smb2.transform, SMB2_TF_PROTOCOL_ID, SMB2_TF_MAGIC);
+ SBVAL(state->smb2.transform, SMB2_TF_SESSION_ID, uid);
+ }
+
SIVAL(state->smb2.hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
SSVAL(state->smb2.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
SSVAL(state->smb2.hdr, SMB2_HDR_OPCODE, cmd);
/*
* 1 for the nbt length
- * per request: HDR, fixed, dyn, padding
+ * per request: TRANSFORM, HDR, fixed, dyn, padding
* -1 because the last one does not need padding
*/
- iov = talloc_array(reqs[0], struct iovec, 1 + 4*num_reqs - 1);
+ iov = talloc_array(reqs[0], struct iovec, 1 + 5*num_reqs - 1);
if (iov == NULL) {
return NT_STATUS_NO_MEMORY;
}
nbt_len = 0;
for (i=0; i<num_reqs; i++) {
+ int tf_iov;
int hdr_iov;
size_t reqlen;
bool ret;
uint16_t credits;
uint64_t mid;
const DATA_BLOB *signing_key = NULL;
+ const DATA_BLOB *encryption_key = NULL;
if (!tevent_req_is_in_progress(reqs[i])) {
return NT_STATUS_INTERNAL_ERROR;
SBVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID, mid);
skip_credits:
+ if (state->session) {
+ /*
+ * We prefer the channel signing key if it is
+ * already there.
+ */
+ if (state->smb2.should_sign) {
+ signing_key = &state->session->smb2.channel_signing_key;
+ }
+
+ /*
+ * If it is a channel binding, we already have the main
+ * signing key and try that one.
+ */
+ if (signing_key && signing_key->length == 0) {
+ signing_key = &state->session->smb2.signing_key;
+ }
+
+ /*
+ * If we do not have any session key yet, we skip the
+ * signing of SMB2_OP_SESSSETUP requests.
+ */
+ if (signing_key && signing_key->length == 0) {
+ signing_key = NULL;
+ }
+
+ if (state->smb2.should_encrypt) {
+ encryption_key = &state->session->smb2.encryption_key;
+ }
+ }
+
+ if (encryption_key) {
+ tf_iov = num_iov;
+ iov[num_iov].iov_base = state->smb2.transform;
+ iov[num_iov].iov_len = sizeof(state->smb2.transform);
+ num_iov += 1;
+ }
+
hdr_iov = num_iov;
iov[num_iov].iov_base = state->smb2.hdr;
iov[num_iov].iov_len = sizeof(state->smb2.hdr);
}
SIVAL(state->smb2.hdr, SMB2_HDR_NEXT_COMMAND, reqlen);
}
- nbt_len += reqlen;
-
- if (state->session) {
- bool should_sign = state->session->smb2.should_sign;
- if (opcode == SMB2_OP_SESSSETUP &&
- state->session->smb2.signing_key.length != 0) {
- should_sign = true;
+ if (encryption_key) {
+ NTSTATUS status;
+ uint8_t *buf;
+ int vi;
+
+ SBVAL(state->smb2.transform, SMB2_TF_NONCE, mid);
+ SBVAL(state->smb2.transform, SMB2_TF_NONCE+8,
+ state->session->smb2.channel_nonce);
+ SBVAL(state->smb2.transform, SMB2_TF_MSG_SIZE,
+ reqlen);
+
+ buf = talloc_array(iov, uint8_t, reqlen);
+ if (buf == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
- /*
- * We prefer the channel signing key if it is
- * already there.
- */
- if (should_sign) {
- signing_key = &state->session->smb2.channel_signing_key;
- }
+ reqlen += SMB2_TF_HDR_SIZE;
/*
- * If it is a channel binding, we already have the main
- * signing key and try that one.
+ * We copy the buffers before encrypting them,
+ * this is at least currently needed for the
+ * to keep state->smb2.hdr.
+ *
+ * Also the callers may expect there buffers
+ * to be const.
*/
- if (signing_key && signing_key->length == 0) {
- signing_key = &state->session->smb2.signing_key;
- }
+ for (vi = hdr_iov; vi < num_iov; vi++) {
+ struct iovec *v = &iov[vi];
+ const uint8_t *o = (const uint8_t *)v->iov_base;
- /*
- * If we do not have any session key yet, we skip the
- * signing of SMB2_OP_SESSSETUP requests.
- */
- if (signing_key && signing_key->length == 0) {
- signing_key = NULL;
+ memcpy(buf, o, v->iov_len);
+ v->iov_base = (void *)buf;
+ buf += v->iov_len;
}
- }
- if (signing_key) {
+ status = smb2_signing_encrypt_pdu(*encryption_key,
+ state->session->conn->protocol,
+ &iov[tf_iov], num_iov - tf_iov);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ } else if (signing_key) {
NTSTATUS status;
status = smb2_signing_sign_pdu(*signing_key,
+ state->session->conn->protocol,
&iov[hdr_iov], num_iov - hdr_iov);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
}
+ nbt_len += reqlen;
+
ret = smbXcli_req_set_pending(reqs[i]);
if (!ret) {
return NT_STATUS_NO_MEMORY;
}
}
-static NTSTATUS smb2cli_inbuf_parse_compound(uint8_t *buf, TALLOC_CTX *mem_ctx,
+static NTSTATUS smb2cli_inbuf_parse_compound(struct smbXcli_conn *conn,
+ uint8_t *buf,
+ size_t buflen,
+ TALLOC_CTX *mem_ctx,
struct iovec **piov, int *pnum_iov)
{
struct iovec *iov;
- int num_iov;
- size_t buflen;
- size_t taken;
- uint8_t *first_hdr;
-
- num_iov = 0;
+ int num_iov = 0;
+ size_t taken = 0;
+ uint8_t *first_hdr = buf;
iov = talloc_array(mem_ctx, struct iovec, num_iov);
if (iov == NULL) {
return NT_STATUS_NO_MEMORY;
}
- buflen = smb_len_tcp(buf);
- taken = 0;
- first_hdr = buf + NBT_HDR_SIZE;
-
while (taken < buflen) {
+ uint8_t *tf = NULL;
+ size_t tf_len = 0;
size_t len = buflen - taken;
uint8_t *hdr = first_hdr + taken;
struct iovec *cur;
uint16_t body_size;
struct iovec *iov_tmp;
+ if (len < 4) {
+ DEBUG(10, ("%d bytes left, expected at least %d\n",
+ (int)len, 4));
+ goto inval;
+ }
+ if (IVAL(hdr, 0) == SMB2_TF_MAGIC) {
+ struct smbXcli_session *s;
+ uint64_t uid;
+ struct iovec tf_iov[2];
+ NTSTATUS status;
+
+ if (len < SMB2_TF_HDR_SIZE) {
+ DEBUG(10, ("%d bytes left, expected at least %d\n",
+ (int)len, SMB2_TF_HDR_SIZE));
+ goto inval;
+ }
+ tf = hdr;
+ tf_len = SMB2_TF_HDR_SIZE;
+ taken += tf_len;
+
+ hdr = first_hdr + taken;
+ len = IVAL(tf, SMB2_TF_MSG_SIZE);
+ uid = BVAL(tf, SMB2_TF_SESSION_ID);
+
+ s = conn->sessions;
+ for (; s; s = s->next) {
+ if (s->smb2.session_id != uid) {
+ continue;
+ }
+ break;
+ }
+
+ if (s == NULL) {
+ DEBUG(10, ("unknown session_id %llu\n",
+ (unsigned long long)uid));
+ goto inval;
+ }
+
+ tf_iov[0].iov_base = (void *)tf;
+ tf_iov[0].iov_len = tf_len;
+ tf_iov[1].iov_base = (void *)hdr;
+ tf_iov[1].iov_len = len;
+
+ status = smb2_signing_decrypt_pdu(s->smb2.decryption_key,
+ conn->protocol,
+ tf_iov, 2);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(iov);
+ return status;
+ }
+ }
+
/*
* We need the header plus the body length field
*/
if (next_command_ofs > full_size) {
goto inval;
}
+ if (tf && next_command_ofs < len) {
+ goto inval;
+ }
full_size = next_command_ofs;
}
if (body_size < 2) {
}
iov_tmp = talloc_realloc(mem_ctx, iov, struct iovec,
- num_iov + 3);
+ num_iov + 4);
if (iov_tmp == NULL) {
TALLOC_FREE(iov);
return NT_STATUS_NO_MEMORY;
}
iov = iov_tmp;
cur = &iov[num_iov];
- num_iov += 3;
+ num_iov += 4;
- cur[0].iov_base = hdr;
- cur[0].iov_len = SMB2_HDR_BODY;
- cur[1].iov_base = hdr + SMB2_HDR_BODY;
- cur[1].iov_len = body_size;
- cur[2].iov_base = hdr + SMB2_HDR_BODY + body_size;
- cur[2].iov_len = full_size - (SMB2_HDR_BODY + body_size);
+ cur[0].iov_base = tf;
+ cur[0].iov_len = tf_len;
+ cur[1].iov_base = hdr;
+ cur[1].iov_len = SMB2_HDR_BODY;
+ cur[2].iov_base = hdr + SMB2_HDR_BODY;
+ cur[2].iov_len = body_size;
+ cur[3].iov_base = hdr + SMB2_HDR_BODY + body_size;
+ cur[3].iov_len = full_size - (SMB2_HDR_BODY + body_size);
taken += full_size;
}
NTSTATUS status;
bool defer = true;
struct smbXcli_session *last_session = NULL;
+ size_t inbuf_len = smb_len_tcp(inbuf);
- status = smb2cli_inbuf_parse_compound(inbuf, tmp_mem,
+ status = smb2cli_inbuf_parse_compound(conn,
+ inbuf + NBT_HDR_SIZE,
+ inbuf_len,
+ tmp_mem,
&iov, &num_iov);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
- for (i=0; i<num_iov; i+=3) {
+ for (i=0; i<num_iov; i+=4) {
uint8_t *inbuf_ref = NULL;
struct iovec *cur = &iov[i];
- uint8_t *inhdr = (uint8_t *)cur[0].iov_base;
+ uint8_t *inhdr = (uint8_t *)cur[1].iov_base;
uint16_t opcode = SVAL(inhdr, SMB2_HDR_OPCODE);
uint32_t flags = IVAL(inhdr, SMB2_HDR_FLAGS);
uint64_t mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
uint32_t new_credits;
struct smbXcli_session *session = NULL;
const DATA_BLOB *signing_key = NULL;
- bool should_sign = false;
new_credits = conn->smb2.cur_credits;
new_credits += credits;
}
last_session = session;
- if (session) {
- should_sign = session->smb2.should_sign;
- if (opcode == SMB2_OP_SESSSETUP &&
- session->smb2.signing_key.length != 0) {
- should_sign = true;
- }
- }
-
- if (should_sign) {
+ if (state->smb2.should_sign) {
if (!(flags & SMB2_HDR_FLAG_SIGNED)) {
return NT_STATUS_ACCESS_DENIED;
}
* propagate the NT_STATUS_USER_SESSION_DELETED
* status to the caller.
*/
- if (signing_key) {
- signing_key = NULL;
+ signing_key = NULL;
+ } else if (state->smb2.should_encrypt) {
+ if (cur[0].iov_len != SMB2_TF_HDR_SIZE) {
+ return NT_STATUS_ACCESS_DENIED;
}
}
}
if (signing_key) {
- status = smb2_signing_check_pdu(*signing_key, cur, 3);
+ status = smb2_signing_check_pdu(*signing_key,
+ state->conn->protocol,
+ &cur[1], 3);
if (!NT_STATUS_IS_OK(status)) {
/*
* If the signing check fails, we disconnect
* There might be more than one response
* we need to defer the notifications
*/
- if ((num_iov == 4) && (talloc_array_length(conn->pending) == 0)) {
+ if ((num_iov == 5) && (talloc_array_length(conn->pending) == 0)) {
defer = false;
}
}
/* copy the related buffers */
- state->smb2.recv_iov[0] = cur[0];
- state->smb2.recv_iov[1] = cur[1];
- state->smb2.recv_iov[2] = cur[2];
+ state->smb2.recv_iov[0] = cur[1];
+ state->smb2.recv_iov[1] = cur[2];
+ state->smb2.recv_iov[2] = cur[3];
tevent_req_done(req);
}
{PROTOCOL_SMB2_10, SMB2_DIALECT_REVISION_210},
{PROTOCOL_SMB2_22, SMB2_DIALECT_REVISION_222},
{PROTOCOL_SMB2_24, SMB2_DIALECT_REVISION_224},
+ {PROTOCOL_SMB3_00, SMB3_DIALECT_REVISION_300},
};
struct smbXcli_negprot_state {
flags, ~flags,
flags2, ~flags2,
state->timeout_msec,
- 0xFFFE, 0, 0, /* pid, tid, uid */
+ 0xFFFE, 0, NULL, /* pid, tid, session */
0, NULL, /* wct, vwv */
bytes.length, bytes.data);
}
SSVAL(buf, 2, dialect_count);
SSVAL(buf, 4, state->conn->smb2.client.security_mode);
SSVAL(buf, 6, 0); /* Reserved */
- SSVAL(buf, 8, 0); /* Capabilities */
+ if (state->max_protocol >= PROTOCOL_SMB2_22) {
+ SIVAL(buf, 8, state->conn->smb2.client.capabilities);
+ } else {
+ SIVAL(buf, 8, 0); /* Capabilities */
+ }
if (state->max_protocol >= PROTOCOL_SMB2_10) {
NTSTATUS status;
DATA_BLOB blob;
struct tevent_req *subreq;
struct smbXcli_req_state *substate;
struct tevent_req *req;
- uint32_t protocol_magic = IVAL(inbuf, 4);
+ uint32_t protocol_magic;
+ size_t inbuf_len = smb_len_nbt(inbuf);
if (num_pending != 1) {
return NT_STATUS_INTERNAL_ERROR;
}
+ if (inbuf_len < 4) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
subreq = conn->pending[0];
substate = tevent_req_data(subreq, struct smbXcli_req_state);
req = tevent_req_callback_data(subreq, struct tevent_req);
+ protocol_magic = IVAL(inbuf, 4);
+
switch (protocol_magic) {
case SMB_MAGIC:
tevent_req_set_callback(subreq, smbXcli_negprot_smb1_done, req);
return session;
}
+uint16_t smb1cli_session_current_id(struct smbXcli_session *session)
+{
+ return session->smb1.session_id;
+}
+
+void smb1cli_session_set_id(struct smbXcli_session *session,
+ uint16_t session_id)
+{
+ session->smb1.session_id = session_id;
+}
+
uint8_t smb2cli_session_security_mode(struct smbXcli_session *session)
{
struct smbXcli_conn *conn = session->conn;
return session->smb2.session_id;
}
+uint16_t smb2cli_session_get_flags(struct smbXcli_session *session)
+{
+ return session->smb2.session_flags;
+}
+
+NTSTATUS smb2cli_session_application_key(struct smbXcli_session *session,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *key)
+{
+ *key = data_blob_null;
+
+ if (session->smb2.application_key.length == 0) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ *key = data_blob_dup_talloc(mem_ctx, session->smb2.application_key);
+ if (key->data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
void smb2cli_session_set_id_and_flags(struct smbXcli_session *session,
uint64_t session_id,
uint16_t session_flags)
return NT_STATUS_INVALID_PARAMETER_MIX;
}
- if (session->smb2.signing_key.length != 0) {
- return NT_STATUS_INVALID_PARAMETER_MIX;
- }
-
no_sign_flags = SMB2_SESSION_FLAG_IS_GUEST | SMB2_SESSION_FLAG_IS_NULL;
if (session->smb2.session_flags & no_sign_flags) {
return NT_STATUS_OK;
}
+ if (session->smb2.signing_key.length != 0) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
ZERO_STRUCT(session_key);
memcpy(session_key, _session_key.data,
MIN(_session_key.length, sizeof(session_key)));
session->smb2.signing_key = data_blob_talloc(session,
session_key,
sizeof(session_key));
- ZERO_STRUCT(session_key);
if (session->smb2.signing_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
+ const DATA_BLOB context = data_blob_string_const_null("SmbSign");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.signing_key.data);
+ }
+
+ session->smb2.encryption_key = data_blob_dup_talloc(session,
+ session->smb2.signing_key);
+ if (session->smb2.encryption_key.data == NULL) {
+ ZERO_STRUCT(session_key);
return NT_STATUS_NO_MEMORY;
}
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
+ const DATA_BLOB context = data_blob_string_const_null("ServerIn ");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.encryption_key.data);
+ }
+
+ session->smb2.decryption_key = data_blob_dup_talloc(session,
+ session->smb2.signing_key);
+ if (session->smb2.decryption_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
+ const DATA_BLOB context = data_blob_string_const_null("ServerOut");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.decryption_key.data);
+ }
+
+ session->smb2.application_key = data_blob_dup_talloc(session,
+ session->smb2.signing_key);
+ if (session->smb2.application_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
+ const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.application_key.data);
+ }
+ ZERO_STRUCT(session_key);
+
session->smb2.channel_signing_key = data_blob_dup_talloc(session,
session->smb2.signing_key);
if (session->smb2.channel_signing_key.data == NULL) {
}
status = smb2_signing_check_pdu(session->smb2.channel_signing_key,
+ session->conn->protocol,
recv_iov, 3);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
session->smb2.should_sign = false;
+ session->smb2.should_encrypt = false;
if (conn->desire_signing) {
session->smb2.should_sign = true;
session->smb2.should_sign = true;
}
+ if (session->smb2.session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
+ session->smb2.should_encrypt = true;
+ }
+
+ if (conn->protocol < PROTOCOL_SMB2_24) {
+ session->smb2.should_encrypt = false;
+ }
+
+ if (!(conn->smb2.server.capabilities & SMB2_CAP_ENCRYPTION)) {
+ session->smb2.should_encrypt = false;
+ }
+
+ generate_random_buffer((uint8_t *)&session->smb2.channel_nonce,
+ sizeof(session->smb2.channel_nonce));
+ session->smb2.channel_next = 1;
+
return NT_STATUS_OK;
}
return NT_STATUS_INVALID_PARAMETER_MIX;
}
+ if (session1->smb2.channel_next == 0) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
if (conn == NULL) {
return NT_STATUS_INVALID_PARAMETER_MIX;
}
return NT_STATUS_NO_MEMORY;
}
+ session2->smb2.application_key = data_blob_dup_talloc(session2,
+ session1->smb2.application_key);
+ if (session2->smb2.application_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
session2->smb2.should_sign = session1->smb2.should_sign;
+ session2->smb2.should_encrypt = session1->smb2.should_encrypt;
+
+ session2->smb2.channel_nonce = session1->smb2.channel_nonce;
+ session2->smb2.channel_nonce += session1->smb2.channel_next;
+ session1->smb2.channel_next++;
+
+ session2->smb2.encryption_key = data_blob_dup_talloc(session2,
+ session1->smb2.encryption_key);
+ if (session2->smb2.encryption_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session2->smb2.decryption_key = data_blob_dup_talloc(session2,
+ session1->smb2.decryption_key);
+ if (session2->smb2.decryption_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
talloc_set_destructor(session2, smbXcli_session_destructor);
DLIST_ADD_END(conn->sessions, session2, struct smbXcli_session *);
session->smb2.channel_signing_key = data_blob_talloc(session,
channel_key,
sizeof(channel_key));
- ZERO_STRUCT(channel_key);
if (session->smb2.channel_signing_key.data == NULL) {
+ ZERO_STRUCT(channel_key);
return NT_STATUS_NO_MEMORY;
}
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
+ const DATA_BLOB context = data_blob_string_const_null("SmbSign");
+
+ smb2_key_derivation(channel_key, sizeof(channel_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.channel_signing_key.data);
+ }
+ ZERO_STRUCT(channel_key);
+
status = smb2_signing_check_pdu(session->smb2.channel_signing_key,
+ session->conn->protocol,
recv_iov, 3);
if (!NT_STATUS_IS_OK(status)) {
return status;
return NT_STATUS_OK;
}
+
+struct smbXcli_tcon *smbXcli_tcon_create(TALLOC_CTX *mem_ctx)
+{
+ struct smbXcli_tcon *tcon;
+
+ tcon = talloc_zero(mem_ctx, struct smbXcli_tcon);
+ if (tcon == NULL) {
+ return NULL;
+ }
+
+ return tcon;
+}
+
+uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon *tcon)
+{
+ return tcon->smb1.tcon_id;
+}
+
+void smb1cli_tcon_set_id(struct smbXcli_tcon *tcon, uint16_t tcon_id)
+{
+ tcon->smb1.tcon_id = tcon_id;
+}
+
+bool smb1cli_tcon_set_values(struct smbXcli_tcon *tcon,
+ uint16_t tcon_id,
+ uint16_t optional_support,
+ uint32_t maximal_access,
+ uint32_t guest_maximal_access,
+ const char *service,
+ const char *fs_type)
+{
+ tcon->smb1.tcon_id = tcon_id;
+ tcon->smb1.optional_support = optional_support;
+ tcon->smb1.maximal_access = maximal_access;
+ tcon->smb1.guest_maximal_access = guest_maximal_access;
+
+ TALLOC_FREE(tcon->smb1.service);
+ tcon->smb1.service = talloc_strdup(tcon, service);
+ if (service != NULL && tcon->smb1.service == NULL) {
+ return false;
+ }
+
+ TALLOC_FREE(tcon->smb1.fs_type);
+ tcon->smb1.fs_type = talloc_strdup(tcon, fs_type);
+ if (fs_type != NULL && tcon->smb1.fs_type == NULL) {
+ return false;
+ }
+
+ return true;
+}
+
+uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon *tcon)
+{
+ return tcon->smb2.tcon_id;
+}
+
+void smb2cli_tcon_set_values(struct smbXcli_tcon *tcon,
+ uint32_t tcon_id,
+ uint8_t type,
+ uint32_t flags,
+ uint32_t capabilities,
+ uint32_t maximal_access)
+{
+ tcon->smb2.tcon_id = tcon_id;
+ tcon->smb2.type = type;
+ tcon->smb2.flags = flags;
+ tcon->smb2.capabilities = capabilities;
+ tcon->smb2.maximal_access = maximal_access;
+}