[PATCH 2/6] msv1_0: Implement SpAcceptLsaModeContext.
Signed-off-by: Hans Leidekker <hans(a)codeweavers.com> --- dlls/msv1_0/main.c | 209 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 208 insertions(+), 1 deletion(-) diff --git a/dlls/msv1_0/main.c b/dlls/msv1_0/main.c index 4b0a636bd77..28cad0cb14c 100644 --- a/dlls/msv1_0/main.c +++ b/dlls/msv1_0/main.c @@ -829,6 +829,213 @@ done: return status; } +static NTSTATUS NTAPI ntlm_SpAcceptLsaModeContext( LSA_SEC_HANDLE cred_handle, LSA_SEC_HANDLE ctx_handle, + SecBufferDesc *input, ULONG ctx_req, ULONG data_rep, + LSA_SEC_HANDLE *new_ctx_handle, SecBufferDesc *output, + ULONG *ctx_attr, TimeStamp *expiry, BOOLEAN *mapped_ctx, + SecBuffer *ctx_data ) +{ + NTSTATUS status = SEC_E_INSUFFICIENT_MEMORY; + struct ntlm_ctx *ctx = NULL; + char *buf, *bin, *want_flags = NULL; + unsigned int len, bin_len; + + TRACE( "%lx, %lx, %08x, %u, %p, %p, %p, %p, %p, %p, %p\n", cred_handle, ctx_handle, ctx_req, data_rep, input, + new_ctx_handle, output, ctx_attr, expiry, mapped_ctx, ctx_data ); + if (ctx_req) FIXME( "ignoring flags %08x\n", ctx_req ); + + if (!(buf = malloc( NTLM_MAX_BUF ))) return SEC_E_INSUFFICIENT_MEMORY; + if (!(bin = malloc( NTLM_MAX_BUF ))) goto done; + + if (!ctx_handle) + { + struct ntlm_cred *cred = (struct ntlm_cred *)cred_handle; + char *argv[3]; + + if (!cred || cred->mode != MODE_SERVER) + { + status = SEC_E_INVALID_HANDLE; + goto done; + } + + if (!input || input->cBuffers < 1) + { + status = SEC_E_INCOMPLETE_MESSAGE; + goto done; + } + + if (input->pBuffers[0].cbBuffer > NTLM_MAX_BUF) + { + status = SEC_E_INVALID_TOKEN; + goto done; + } + else bin_len = input->pBuffers[0].cbBuffer; + + argv[0] = (char *)"ntlm_auth"; + argv[1] = (char *)"--helper-protocol=squid-2.5-ntlmssp"; + argv[2] = NULL; + if ((status = ntlm_funcs->fork( argv, &ctx )) != SEC_E_OK) goto done; + ctx->mode = MODE_SERVER; + + if (!(want_flags = malloc( 73 ))) + { + status = SEC_E_INSUFFICIENT_MEMORY; + goto done; + } + strcpy( want_flags, "SF" ); + if (ctx_req & ASC_REQ_CONFIDENTIALITY) strcat( want_flags, " NTLMSSP_FEATURE_SEAL" ); + if (ctx_req & ASC_REQ_CONNECTION) + { + strcat( want_flags, " NTLMSSP_FEATURE_SESSION_KEY" ); + ctx->attrs |= ASC_RET_CONNECTION; + } + if (ctx_req & ASC_REQ_INTEGRITY) strcat( want_flags, " NTLMSSP_FEATURE_SIGN" ); + if (ctx_req & ASC_REQ_ALLOCATE_MEMORY) FIXME( "ASC_REQ_ALLOCATE_MEMORY\n" ); + if (ctx_req & ASC_REQ_EXTENDED_ERROR) FIXME( "ASC_REQ_EXTENDED_ERROR\n" ); + if (ctx_req & ASC_REQ_MUTUAL_AUTH) FIXME( "ASC_REQ_MUTUAL_AUTH\n" ); + if (ctx_req & ASC_REQ_REPLAY_DETECT) FIXME( "ASC_REQ_REPLAY_DETECT\n" ); + if (ctx_req & ASC_REQ_SEQUENCE_DETECT) FIXME( "ASC_REQ_SEQUENCE_DETECT\n" ); + if (ctx_req & ASC_REQ_STREAM) FIXME( "ASC_REQ_STREAM\n" ); + + if (strlen( want_flags ) > 3) + { + TRACE( "want flags are %s\n", debugstr_a(want_flags) ); + strcpy( buf, want_flags ); + if ((status = ntlm_funcs->chat( ctx, buf, NTLM_MAX_BUF, &len )) != SEC_E_OK) goto done; + if (!strncmp( buf, "BH", 2 )) ERR( "ntlm_auth doesn't understand new command set\n" ); + } + + memcpy( bin, input->pBuffers[0].pvBuffer, bin_len ); + strcpy( buf, "YR " ); + encode_base64( bin, bin_len, buf + 3 ); + + if ((status = ntlm_funcs->chat( ctx, buf, NTLM_MAX_BUF, &len )) != SEC_E_OK) goto done; + TRACE( "ntlm_auth returned %s\n", buf ); + if (strncmp( buf, "TT ", 3)) + { + status = SEC_E_INTERNAL_ERROR; + goto done; + } + bin_len = decode_base64( buf + 3, len - 3, bin ); + + if (!output || output->cBuffers < 1) + { + status = SEC_E_INSUFFICIENT_MEMORY; + goto done; + } + output->pBuffers[0].cbBuffer = bin_len; + output->pBuffers[0].BufferType = SECBUFFER_DATA; + memcpy( output->pBuffers[0].pvBuffer, bin, bin_len ); + + *new_ctx_handle = (LSA_SEC_HANDLE)ctx; + status = SEC_I_CONTINUE_NEEDED; + } + else + { + if (!input || input->cBuffers < 1) + { + status = SEC_E_INCOMPLETE_MESSAGE; + goto done; + } + + ctx = (struct ntlm_ctx *)ctx_handle; + if (!ctx || ctx->mode != MODE_SERVER) + { + status = SEC_E_INVALID_HANDLE; + goto done; + } + + if (input->pBuffers[0].cbBuffer > NTLM_MAX_BUF) + { + status = SEC_E_INVALID_TOKEN; + goto done; + } + else bin_len = input->pBuffers[0].cbBuffer; + memcpy( bin, input->pBuffers[0].pvBuffer, bin_len ); + + strcpy( buf, "KK " ); + encode_base64( bin, bin_len, buf + 3 ); + + TRACE( "client sent %s\n", debugstr_a(buf) ); + if ((status = ntlm_funcs->chat( ctx, buf, NTLM_MAX_BUF, &len )) != SEC_E_OK) goto done; + TRACE( "ntlm_auth returned %s\n", debugstr_a(buf) ); + + /* At this point, we get a NA if the user didn't authenticate, but a BH if ntlm_auth could not + * connect to winbindd. Apart from running Wine as root, there is no way to fix this for now, + * so just handle this as a failed login. */ + if (strncmp( buf, "AF ", 3 )) + { + if (!strncmp( buf, "NA ", 3 )) + { + status = SEC_E_LOGON_DENIED; + goto done; + } + else + { + const char err_v3[] = "BH NT_STATUS_ACCESS_DENIED"; + const char err_v4[] = "BH NT_STATUS_UNSUCCESSFUL"; + + if ((len >= strlen(err_v3) && !strncmp( buf, err_v3, strlen(err_v3) )) || + (len >= strlen(err_v4) && !strncmp( buf, err_v4, strlen(err_v4) ))) + { + TRACE( "connection to winbindd failed\n" ); + status = SEC_E_LOGON_DENIED; + } + else status = SEC_E_INTERNAL_ERROR; + goto done; + } + } + output->pBuffers[0].cbBuffer = 0; + + strcpy( buf, "GF" ); + if ((status = ntlm_funcs->chat( ctx, buf, NTLM_MAX_BUF, &len )) != SEC_E_OK) goto done; + if (len < 3) ctx->flags = 0; + else sscanf( buf + 3, "%x", &ctx->flags ); + + strcpy( buf, "GK" ); + if ((status = ntlm_funcs->chat( ctx, buf, NTLM_MAX_BUF, &len )) != SEC_E_OK) goto done; + + if (!strncmp( buf, "BH", 2 )) TRACE( "no key negotiated\n" ); + else if (!strncmp( buf, "GK ", 3 )) + { + bin_len = decode_base64( buf + 3, len - 3, bin ); + TRACE( "session key is %s\n", debugstr_a(buf + 3) ); + memcpy( ctx->session_key, bin, bin_len ); + } + + if (len < 3) memset( ctx->session_key, 0 , 16 ); + else + { + if (!strncmp( buf, "BH ", 3 )) + { + TRACE( "helper sent %s\n", debugstr_a(buf + 3) ); + /*FIXME: generate dummy session key = MD4(MD4(password))*/ + memset( ctx->session_key, 0 , 16 ); + } + else if (!strncmp( buf, "GK ", 3 )) + { + bin_len = decode_base64( buf + 3, len - 3, bin ); + TRACE( "session key is %s\n", debugstr_a(buf + 3) ); + memcpy( ctx->session_key, bin, 16 ); + } + } + arc4_init( &ctx->crypt.ntlm.arc4info, ctx->session_key, 16 ); + ctx->crypt.ntlm.seq_no = 0; + + *new_ctx_handle = (LSA_SEC_HANDLE)ctx; + status = SEC_E_OK; + } + +done: + if (status != SEC_E_OK && status != SEC_I_CONTINUE_NEEDED) ntlm_funcs->cleanup( ctx ); + free( buf ); + free( bin ); + free( want_flags ); + + TRACE( "returning %08x\n", status ); + return status; +} + static NTSTATUS NTAPI ntlm_SpDeleteContext( LSA_SEC_HANDLE handle ) { struct ntlm_ctx *ctx = (struct ntlm_ctx *)handle; @@ -861,7 +1068,7 @@ static SECPKG_FUNCTION_TABLE ntlm_table = NULL, /* GetCredentials */ NULL, /* DeleteCredentials */ ntlm_SpInitLsaModeContext, - NULL, /* SpAcceptLsaModeContext */ + ntlm_SpAcceptLsaModeContext, ntlm_SpDeleteContext, NULL, /* ApplyControlToken */ NULL, /* GetUserInfo */ -- 2.30.2
participants (1)
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Hans Leidekker