2 Unix SMB/CIFS implementation.
6 Copyright (C) 2014 Samuel Cabrero <samuelcabrero@kernevil.me>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "http_internal.h"
25 #include "lib/util/tevent_ntstatus.h"
26 #include "lib/param/param.h"
28 #include "auth/gensec/gensec.h"
29 #include "auth/credentials/credentials.h"
30 #include "lib/util/data_blob.h"
33 * Copy the request headers from src to dst
35 static NTSTATUS
http_copy_header(const struct http_request
*src
,
36 struct http_request
*dst
)
38 struct http_header
*h
;
40 dst
->type
= src
->type
;
41 dst
->major
= src
->major
;
42 dst
->minor
= src
->minor
;
43 dst
->uri
= talloc_strdup(dst
, src
->uri
);
45 for (h
= src
->headers
; h
!= NULL
; h
= h
->next
) {
46 http_add_header(dst
, &dst
->headers
, h
->key
, h
->value
);
48 dst
->headers_size
= src
->headers_size
;
54 * Retrieve the WWW-Authenticate header from server response based on the
55 * authentication scheme being used.
57 static NTSTATUS
http_parse_auth_response(const DATA_BLOB prefix
,
58 struct http_request
*auth_response
,
61 struct http_header
*h
;
63 for (h
= auth_response
->headers
; h
!= NULL
; h
= h
->next
) {
66 cmp
= strcasecmp(h
->key
, "WWW-Authenticate");
71 cmp
= strncasecmp(h
->value
,
72 (const char *)prefix
.data
,
78 *in
= data_blob_string_const(h
->value
);
82 return NT_STATUS_NOT_SUPPORTED
;
85 struct http_auth_state
{
86 struct tevent_context
*ev
;
88 struct http_conn
*http_conn
;
90 enum http_auth_method auth
;
93 struct gensec_security
*gensec_ctx
;
94 NTSTATUS gensec_status
;
96 const struct http_request
*original_request
;
97 struct http_request
*next_request
;
98 struct http_request
*auth_response
;
102 static void http_send_auth_request_gensec_done(struct tevent_req
*subreq
);
103 static void http_send_auth_request_http_req_done(struct tevent_req
*subreq
);
104 static void http_send_auth_request_http_rep_done(struct tevent_req
*subreq
);
106 struct tevent_req
*http_send_auth_request_send(TALLOC_CTX
*mem_ctx
,
107 struct tevent_context
*ev
,
108 struct http_conn
*http_conn
,
109 const struct http_request
*original_request
,
110 struct cli_credentials
*credentials
,
111 struct loadparm_context
*lp_ctx
,
112 enum http_auth_method auth
)
114 struct tevent_req
*req
= NULL
;
115 struct http_auth_state
*state
= NULL
;
116 struct tevent_req
*subreq
= NULL
;
117 DATA_BLOB gensec_in
= data_blob_null
;
119 struct http_header
*h
= NULL
;
120 const char *mech_name
= NULL
;
122 req
= tevent_req_create(mem_ctx
, &state
, struct http_auth_state
);
127 state
->http_conn
= http_conn
;
129 state
->original_request
= original_request
;
131 status
= gensec_init();
132 if (tevent_req_nterror(req
, status
)) {
133 return tevent_req_post(req
, ev
);
136 status
= gensec_client_start(state
, &state
->gensec_ctx
,
137 lpcfg_gensec_settings(state
, lp_ctx
));
138 if (tevent_req_nterror(req
, status
)) {
139 return tevent_req_post(req
, ev
);
142 status
= gensec_set_credentials(state
->gensec_ctx
, credentials
);
143 if (tevent_req_nterror(req
, status
)) {
144 return tevent_req_post(req
, ev
);
147 for (h
= original_request
->headers
; h
!= NULL
; h
= h
->next
) {
150 cmp
= strcasecmp(h
->key
, "Host");
155 status
= gensec_set_target_service(state
->gensec_ctx
, "http");
156 if (tevent_req_nterror(req
, status
)) {
157 return tevent_req_post(req
, ev
);
160 status
= gensec_set_target_hostname(state
->gensec_ctx
, h
->value
);
161 if (tevent_req_nterror(req
, status
)) {
162 return tevent_req_post(req
, ev
);
167 switch (state
->auth
) {
168 case HTTP_AUTH_BASIC
:
169 mech_name
= "http_basic";
170 state
->prefix
= data_blob_string_const("Basic");
173 mech_name
= "http_ntlm";
174 state
->prefix
= data_blob_string_const("NTLM");
176 case HTTP_AUTH_NEGOTIATE
:
177 mech_name
= "http_negotiate";
178 state
->prefix
= data_blob_string_const("Negotiate");
181 tevent_req_nterror(req
, NT_STATUS_NOT_SUPPORTED
);
182 return tevent_req_post(req
, ev
);
185 status
= gensec_start_mech_by_name(state
->gensec_ctx
, mech_name
);
186 if (tevent_req_nterror(req
, status
)) {
187 return tevent_req_post(req
, ev
);
190 subreq
= gensec_update_send(state
, state
->ev
,
193 if (tevent_req_nomem(subreq
, req
)) {
194 return tevent_req_post(req
, ev
);
196 tevent_req_set_callback(subreq
, http_send_auth_request_gensec_done
, req
);
201 static void http_send_auth_request_gensec_done(struct tevent_req
*subreq
)
203 struct tevent_req
*req
=
204 tevent_req_callback_data(subreq
,
206 struct http_auth_state
*state
=
208 struct http_auth_state
);
209 DATA_BLOB gensec_out
= data_blob_null
;
213 TALLOC_FREE(state
->auth_response
);
215 status
= gensec_update_recv(subreq
, state
, &gensec_out
);
217 state
->gensec_status
= status
;
218 if (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
219 status
= NT_STATUS_OK
;
221 if (tevent_req_nterror(req
, status
)) {
225 state
->next_request
= talloc_zero(state
, struct http_request
);
226 if (tevent_req_nomem(state
->next_request
, req
)) {
230 status
= http_copy_header(state
->original_request
, state
->next_request
);
231 if (tevent_req_nterror(req
, status
)) {
235 if (!NT_STATUS_IS_OK(state
->gensec_status
)) {
237 * More preprocessing required before we
238 * can include the content.
240 ret
= http_replace_header(state
->next_request
,
241 &state
->next_request
->headers
,
242 "Content-Length", "0");
248 state
->next_request
->body
= state
->original_request
->body
;
251 if (gensec_out
.length
> 0) {
252 ret
= http_add_header(state
->next_request
,
253 &state
->next_request
->headers
,
255 (char *)gensec_out
.data
);
260 data_blob_free(&gensec_out
);
263 subreq
= http_send_request_send(state
, state
->ev
,
265 state
->next_request
);
266 if (tevent_req_nomem(subreq
, req
)) {
269 tevent_req_set_callback(subreq
,
270 http_send_auth_request_http_req_done
,
274 static void http_send_auth_request_http_req_done(struct tevent_req
*subreq
)
276 struct tevent_req
*req
=
277 tevent_req_callback_data(subreq
,
279 struct http_auth_state
*state
=
281 struct http_auth_state
);
284 TALLOC_FREE(state
->next_request
);
286 status
= http_send_request_recv(subreq
);
288 if (tevent_req_nterror(req
, status
)) {
293 * If no more processing required, it is done
295 * The caller will use http_read_response_send/recv
296 * in order to get the high level response.
298 if (NT_STATUS_IS_OK(state
->gensec_status
)) {
299 tevent_req_done(req
);
304 * If more processing required, read the response from server
306 * We may get an empty RPCH Echo packet from the server
307 * on the "RPC_OUT_DATA" path. We need to consume this
308 * from the socket, but for now we just ignore the bytes.
310 subreq
= http_read_response_send(state
, state
->ev
,
313 if (tevent_req_nomem(subreq
, req
)) {
316 tevent_req_set_callback(subreq
,
317 http_send_auth_request_http_rep_done
,
321 static void http_send_auth_request_http_rep_done(struct tevent_req
*subreq
)
323 struct tevent_req
*req
=
324 tevent_req_callback_data(subreq
,
326 struct http_auth_state
*state
=
328 struct http_auth_state
);
329 DATA_BLOB gensec_in
= data_blob_null
;
332 status
= http_read_response_recv(subreq
, state
,
333 &state
->auth_response
);
335 if (tevent_req_nterror(req
, status
)) {
340 * We we asked for up to UINT16_MAX bytes of
341 * content, we don't expect
342 * state->auth_response->remaining_content_length
345 * For now we just ignore any bytes in
346 * state->auth_response->body.
348 if (state
->auth_response
->remaining_content_length
!= 0) {
349 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
353 status
= http_parse_auth_response(state
->prefix
,
354 state
->auth_response
,
356 if (tevent_req_nterror(req
, status
)) {
360 subreq
= gensec_update_send(state
, state
->ev
,
363 if (tevent_req_nomem(subreq
, req
)) {
366 tevent_req_set_callback(subreq
, http_send_auth_request_gensec_done
, req
);
369 NTSTATUS
http_send_auth_request_recv(struct tevent_req
*req
)
373 if (tevent_req_is_nterror(req
, &status
)) {
374 tevent_req_received(req
);
377 tevent_req_received(req
);