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authorAndrew Bartlett <abartlet@samba.org>2011-01-20 16:37:04 +1100
committerAndrew Bartlett <abartlet@samba.org>2011-01-20 23:44:05 +0100
commit084b4e235e2f500614638cb9c023a5ae8c2e531d (patch)
treecf62ba3dd52756abf5f016fa84ca8fa7ff0096b4 /libcli/auth
parent039dd96be236ab0ed1656bd854f407d26e8d3433 (diff)
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libcli/auth move ntlmssp_wrap() and ntlmssp_unwrap() into common code.
The idea here is to allow the source3/libads/sasl.c code to call this instead of the lower level ntlmssp_* functions. Andrew Bartlett
Diffstat (limited to 'libcli/auth')
-rw-r--r--libcli/auth/ntlmssp.h8
-rw-r--r--libcli/auth/ntlmssp_sign.c139
2 files changed, 147 insertions, 0 deletions
diff --git a/libcli/auth/ntlmssp.h b/libcli/auth/ntlmssp.h
index dead412c99..495d94f6a0 100644
--- a/libcli/auth/ntlmssp.h
+++ b/libcli/auth/ntlmssp.h
@@ -160,4 +160,12 @@ NTSTATUS ntlmssp_unseal_packet(struct ntlmssp_state *ntlmssp_state,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig);
+NTSTATUS ntlmssp_wrap(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
+NTSTATUS ntlmssp_unwrap(struct ntlmssp_state *ntlmssp_stae,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
NTSTATUS ntlmssp_sign_init(struct ntlmssp_state *ntlmssp_state);
diff --git a/libcli/auth/ntlmssp_sign.c b/libcli/auth/ntlmssp_sign.c
index 3cf1ed75a7..0e57c07a8d 100644
--- a/libcli/auth/ntlmssp_sign.c
+++ b/libcli/auth/ntlmssp_sign.c
@@ -388,6 +388,145 @@ NTSTATUS ntlmssp_unseal_packet(struct ntlmssp_state *ntlmssp_state,
return status;
}
+NTSTATUS ntlmssp_wrap(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ NTSTATUS nt_status;
+ DATA_BLOB sig;
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ *out = data_blob_talloc(out_mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
+
+ nt_status = ntlmssp_seal_packet(ntlmssp_state, out_mem_ctx,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ &sig);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ memcpy(out->data, sig.data, NTLMSSP_SIG_SIZE);
+ talloc_free(sig.data);
+ }
+ return nt_status;
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+
+ *out = data_blob_talloc(out_mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
+
+ nt_status = ntlmssp_sign_packet(ntlmssp_state, out_mem_ctx,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ &sig);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ memcpy(out->data, sig.data, NTLMSSP_SIG_SIZE);
+ talloc_free(sig.data);
+ }
+ return nt_status;
+ } else {
+ *out = data_blob_talloc(out_mem_ctx, in->data, in->length);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+ }
+}
+
+NTSTATUS ntlmssp_unwrap(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ DATA_BLOB sig;
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ if (in->length < NTLMSSP_SIG_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ sig.data = in->data;
+ sig.length = NTLMSSP_SIG_SIZE;
+
+ *out = data_blob_talloc(out_mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
+
+ return ntlmssp_unseal_packet(ntlmssp_state,
+ out->data, out->length,
+ out->data, out->length,
+ &sig);
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+ NTSTATUS status;
+ struct ntlmssp_crypt_direction save_direction;
+
+ if (in->length < NTLMSSP_SIG_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ sig.data = in->data;
+ sig.length = NTLMSSP_SIG_SIZE;
+ *out = data_blob_talloc(out_mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ save_direction = ntlmssp_state->crypt->ntlm2.receiving;
+ } else {
+ save_direction = ntlmssp_state->crypt->ntlm;
+ }
+
+ status = ntlmssp_check_packet(ntlmssp_state,
+ out->data, out->length,
+ out->data, out->length,
+ &sig);
+ if (!NT_STATUS_IS_OK(status)) {
+ NTSTATUS check_status = status;
+ /*
+ * The Windows LDAP libraries seems to have a bug
+ * and always use sealing even if only signing was
+ * negotiated. So we need to fallback.
+ */
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ ntlmssp_state->crypt->ntlm2.receiving = save_direction;
+ } else {
+ ntlmssp_state->crypt->ntlm = save_direction;
+ }
+
+ status = ntlmssp_unseal_packet(ntlmssp_state,
+ out->data,
+ out->length,
+ out->data,
+ out->length,
+ &sig);
+ if (NT_STATUS_IS_OK(status)) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
+ } else {
+ status = check_status;
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("NTLMSSP packet check for unwrap failed due to invalid signature\n"));
+ }
+ return status;
+ } else {
+ *out = data_blob_talloc(out_mem_ctx, in->data, in->length);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+ }
+}
+
/**
Initialise the state for NTLMSSP signing.
*/