1 /*
2 * Hotspot 2.0 SPP client
3 * Copyright (c) 2012-2014, Qualcomm Atheros, Inc.
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10 #include <sys/stat.h>
11
12 #include "common.h"
13 #include "browser.h"
14 #include "wpa_ctrl.h"
15 #include "wpa_helpers.h"
16 #include "xml-utils.h"
17 #include "http-utils.h"
18 #include "utils/base64.h"
19 #include "crypto/crypto.h"
20 #include "crypto/sha256.h"
21 #include "osu_client.h"
22
23
24 extern const char *spp_xsd_fname;
25
26 static int hs20_spp_update_response(struct hs20_osu_client *ctx,
27 const char *session_id,
28 const char *spp_status,
29 const char *error_code);
30 static void hs20_policy_update_complete(
31 struct hs20_osu_client *ctx, const char *pps_fname);
32
33
get_spp_attr_value(struct xml_node_ctx * ctx,xml_node_t * node,char * attr_name)34 static char * get_spp_attr_value(struct xml_node_ctx *ctx, xml_node_t *node,
35 char *attr_name)
36 {
37 return xml_node_get_attr_value_ns(ctx, node, SPP_NS_URI, attr_name);
38 }
39
40
hs20_spp_validate(struct hs20_osu_client * ctx,xml_node_t * node,const char * expected_name)41 static int hs20_spp_validate(struct hs20_osu_client *ctx, xml_node_t *node,
42 const char *expected_name)
43 {
44 struct xml_node_ctx *xctx = ctx->xml;
45 const char *name;
46 char *err;
47 int ret;
48
49 if (!xml_node_is_element(xctx, node))
50 return -1;
51
52 name = xml_node_get_localname(xctx, node);
53 if (name == NULL)
54 return -1;
55
56 if (strcmp(expected_name, name) != 0) {
57 wpa_printf(MSG_INFO, "Unexpected SOAP method name '%s' (expected '%s')",
58 name, expected_name);
59 write_summary(ctx, "Unexpected SOAP method name '%s' (expected '%s')",
60 name, expected_name);
61 return -1;
62 }
63
64 ret = xml_validate(xctx, node, spp_xsd_fname, &err);
65 if (ret < 0) {
66 wpa_printf(MSG_INFO, "XML schema validation error(s)\n%s", err);
67 write_summary(ctx, "SPP XML schema validation failed");
68 os_free(err);
69 }
70 return ret;
71 }
72
73
add_mo_container(struct xml_node_ctx * ctx,xml_namespace_t * ns,xml_node_t * parent,const char * urn,const char * fname)74 static void add_mo_container(struct xml_node_ctx *ctx, xml_namespace_t *ns,
75 xml_node_t *parent, const char *urn,
76 const char *fname)
77 {
78 xml_node_t *node;
79 xml_node_t *fnode, *tnds;
80 char *str;
81
82 errno = 0;
83 fnode = node_from_file(ctx, fname);
84 if (!fnode) {
85 wpa_printf(MSG_ERROR,
86 "Failed to create XML node from file: %s, possible error: %s",
87 fname, strerror(errno));
88 return;
89 }
90 tnds = mo_to_tnds(ctx, fnode, 0, urn, "syncml:dmddf1.2");
91 xml_node_free(ctx, fnode);
92 if (!tnds)
93 return;
94
95 str = xml_node_to_str(ctx, tnds);
96 xml_node_free(ctx, tnds);
97 if (str == NULL)
98 return;
99
100 node = xml_node_create_text(ctx, parent, ns, "moContainer", str);
101 if (node)
102 xml_node_add_attr(ctx, node, ns, "moURN", urn);
103 os_free(str);
104 }
105
106
build_spp_post_dev_data(struct hs20_osu_client * ctx,xml_namespace_t ** ret_ns,const char * session_id,const char * reason)107 static xml_node_t * build_spp_post_dev_data(struct hs20_osu_client *ctx,
108 xml_namespace_t **ret_ns,
109 const char *session_id,
110 const char *reason)
111 {
112 xml_namespace_t *ns;
113 xml_node_t *spp_node;
114
115 write_summary(ctx, "Building sppPostDevData requestReason='%s'",
116 reason);
117 spp_node = xml_node_create_root(ctx->xml, SPP_NS_URI, "spp", &ns,
118 "sppPostDevData");
119 if (spp_node == NULL)
120 return NULL;
121 if (ret_ns)
122 *ret_ns = ns;
123
124 xml_node_add_attr(ctx->xml, spp_node, ns, "sppVersion", "1.0");
125 xml_node_add_attr(ctx->xml, spp_node, NULL, "requestReason", reason);
126 if (session_id)
127 xml_node_add_attr(ctx->xml, spp_node, ns, "sessionID",
128 session_id);
129 xml_node_add_attr(ctx->xml, spp_node, NULL, "redirectURI",
130 "http://localhost:12345/");
131
132 xml_node_create_text(ctx->xml, spp_node, ns, "supportedSPPVersions",
133 "1.0");
134 xml_node_create_text(ctx->xml, spp_node, ns, "supportedMOList",
135 URN_HS20_PPS " " URN_OMA_DM_DEVINFO " "
136 URN_OMA_DM_DEVDETAIL " " URN_HS20_DEVDETAIL_EXT);
137
138 add_mo_container(ctx->xml, ns, spp_node, URN_OMA_DM_DEVINFO,
139 "devinfo.xml");
140 add_mo_container(ctx->xml, ns, spp_node, URN_OMA_DM_DEVDETAIL,
141 "devdetail.xml");
142
143 return spp_node;
144 }
145
146
process_update_node(struct hs20_osu_client * ctx,xml_node_t * pps,xml_node_t * update)147 static int process_update_node(struct hs20_osu_client *ctx, xml_node_t *pps,
148 xml_node_t *update)
149 {
150 xml_node_t *node, *parent, *tnds, *unode;
151 char *str;
152 const char *name;
153 char *uri, *pos;
154 char *cdata, *cdata_end;
155 size_t fqdn_len;
156
157 wpa_printf(MSG_INFO, "Processing updateNode");
158 debug_dump_node(ctx, "updateNode", update);
159
160 uri = get_spp_attr_value(ctx->xml, update, "managementTreeURI");
161 if (uri == NULL) {
162 wpa_printf(MSG_INFO, "No managementTreeURI present");
163 return -1;
164 }
165 wpa_printf(MSG_INFO, "managementTreeUri: '%s'", uri);
166
167 name = os_strrchr(uri, '/');
168 if (name == NULL) {
169 wpa_printf(MSG_INFO, "Unexpected URI");
170 xml_node_get_attr_value_free(ctx->xml, uri);
171 return -1;
172 }
173 name++;
174 wpa_printf(MSG_INFO, "Update interior node: '%s'", name);
175
176 str = xml_node_get_text(ctx->xml, update);
177 if (str == NULL) {
178 wpa_printf(MSG_INFO, "Could not extract MO text");
179 xml_node_get_attr_value_free(ctx->xml, uri);
180 return -1;
181 }
182 wpa_printf(MSG_DEBUG, "[hs20] nodeContainer text: '%s'", str);
183 cdata = strstr(str, "<![CDATA[");
184 cdata_end = strstr(str, "]]>");
185 if (cdata && cdata_end && cdata_end > cdata &&
186 cdata < strstr(str, "MgmtTree") &&
187 cdata_end > strstr(str, "/MgmtTree")) {
188 char *tmp;
189 wpa_printf(MSG_DEBUG, "[hs20] Removing extra CDATA container");
190 tmp = strdup(cdata + 9);
191 if (tmp) {
192 cdata_end = strstr(tmp, "]]>");
193 if (cdata_end)
194 *cdata_end = '\0';
195 wpa_printf(MSG_DEBUG, "[hs20] nodeContainer text with CDATA container removed: '%s'",
196 tmp);
197 tnds = xml_node_from_buf(ctx->xml, tmp);
198 free(tmp);
199 } else
200 tnds = NULL;
201 } else
202 tnds = xml_node_from_buf(ctx->xml, str);
203 xml_node_get_text_free(ctx->xml, str);
204 if (tnds == NULL) {
205 wpa_printf(MSG_INFO, "[hs20] Could not parse nodeContainer text");
206 xml_node_get_attr_value_free(ctx->xml, uri);
207 return -1;
208 }
209
210 unode = tnds_to_mo(ctx->xml, tnds);
211 xml_node_free(ctx->xml, tnds);
212 if (unode == NULL) {
213 wpa_printf(MSG_INFO, "[hs20] Could not parse nodeContainer TNDS text");
214 xml_node_get_attr_value_free(ctx->xml, uri);
215 return -1;
216 }
217
218 debug_dump_node(ctx, "Parsed TNDS", unode);
219
220 if (get_node_uri(ctx->xml, unode, name) == NULL) {
221 wpa_printf(MSG_INFO, "[hs20] %s node not found", name);
222 xml_node_free(ctx->xml, unode);
223 xml_node_get_attr_value_free(ctx->xml, uri);
224 return -1;
225 }
226
227 if (os_strncasecmp(uri, "./Wi-Fi/", 8) != 0) {
228 wpa_printf(MSG_INFO, "Do not allow update outside ./Wi-Fi");
229 xml_node_free(ctx->xml, unode);
230 xml_node_get_attr_value_free(ctx->xml, uri);
231 return -1;
232 }
233 pos = uri + 8;
234
235 if (ctx->fqdn == NULL) {
236 wpa_printf(MSG_INFO, "FQDN not known");
237 xml_node_free(ctx->xml, unode);
238 xml_node_get_attr_value_free(ctx->xml, uri);
239 return -1;
240 }
241 fqdn_len = os_strlen(ctx->fqdn);
242 if (os_strncasecmp(pos, ctx->fqdn, fqdn_len) != 0 ||
243 pos[fqdn_len] != '/') {
244 wpa_printf(MSG_INFO, "Do not allow update outside ./Wi-Fi/%s",
245 ctx->fqdn);
246 xml_node_free(ctx->xml, unode);
247 xml_node_get_attr_value_free(ctx->xml, uri);
248 return -1;
249 }
250 pos += fqdn_len + 1;
251
252 if (os_strncasecmp(pos, "PerProviderSubscription/", 24) != 0) {
253 wpa_printf(MSG_INFO, "Do not allow update outside ./Wi-Fi/%s/PerProviderSubscription",
254 ctx->fqdn);
255 xml_node_free(ctx->xml, unode);
256 xml_node_get_attr_value_free(ctx->xml, uri);
257 return -1;
258 }
259 pos += 24;
260
261 wpa_printf(MSG_INFO, "Update command for PPS node %s", pos);
262
263 node = get_node(ctx->xml, pps, pos);
264 if (node) {
265 parent = xml_node_get_parent(ctx->xml, node);
266 xml_node_detach(ctx->xml, node);
267 wpa_printf(MSG_INFO, "Replace '%s' node", name);
268 } else {
269 char *pos2;
270 pos2 = os_strrchr(pos, '/');
271 if (pos2 == NULL) {
272 parent = pps;
273 } else {
274 *pos2 = '\0';
275 parent = get_node(ctx->xml, pps, pos);
276 }
277 if (parent == NULL) {
278 wpa_printf(MSG_INFO, "Could not find parent %s", pos);
279 xml_node_free(ctx->xml, unode);
280 xml_node_get_attr_value_free(ctx->xml, uri);
281 return -1;
282 }
283 wpa_printf(MSG_INFO, "Add '%s' node", name);
284 }
285 xml_node_add_child(ctx->xml, parent, unode);
286
287 xml_node_get_attr_value_free(ctx->xml, uri);
288
289 return 0;
290 }
291
292
update_pps(struct hs20_osu_client * ctx,xml_node_t * update,const char * pps_fname,xml_node_t * pps)293 static int update_pps(struct hs20_osu_client *ctx, xml_node_t *update,
294 const char *pps_fname, xml_node_t *pps)
295 {
296 wpa_printf(MSG_INFO, "Updating PPS based on updateNode element(s)");
297 xml_node_for_each_sibling(ctx->xml, update) {
298 xml_node_for_each_check(ctx->xml, update);
299 if (process_update_node(ctx, pps, update) < 0)
300 return -1;
301 }
302
303 return update_pps_file(ctx, pps_fname, pps);
304 }
305
306
hs20_sub_rem_complete(struct hs20_osu_client * ctx,const char * pps_fname)307 static void hs20_sub_rem_complete(struct hs20_osu_client *ctx,
308 const char *pps_fname)
309 {
310 /*
311 * Update wpa_supplicant credentials and reconnect using updated
312 * information.
313 */
314 wpa_printf(MSG_INFO, "Updating wpa_supplicant credentials");
315 cmd_set_pps(ctx, pps_fname);
316
317 if (ctx->no_reconnect)
318 return;
319
320 wpa_printf(MSG_INFO, "Requesting reconnection with updated configuration");
321 if (wpa_command(ctx->ifname, "INTERWORKING_SELECT auto") < 0)
322 wpa_printf(MSG_ERROR, "Failed to request wpa_supplicant to reconnect");
323 }
324
325
hs20_spp_upload_mo(struct hs20_osu_client * ctx,xml_node_t * cmd,const char * session_id,const char * pps_fname)326 static xml_node_t * hs20_spp_upload_mo(struct hs20_osu_client *ctx,
327 xml_node_t *cmd,
328 const char *session_id,
329 const char *pps_fname)
330 {
331 xml_namespace_t *ns;
332 xml_node_t *node, *ret_node;
333 char *urn;
334
335 urn = get_spp_attr_value(ctx->xml, cmd, "moURN");
336 if (!urn) {
337 wpa_printf(MSG_INFO, "No URN included");
338 return NULL;
339 }
340 wpa_printf(MSG_INFO, "Upload MO request - URN=%s", urn);
341 if (strcasecmp(urn, URN_HS20_PPS) != 0) {
342 wpa_printf(MSG_INFO, "Unsupported moURN");
343 xml_node_get_attr_value_free(ctx->xml, urn);
344 return NULL;
345 }
346 xml_node_get_attr_value_free(ctx->xml, urn);
347
348 if (!pps_fname) {
349 wpa_printf(MSG_INFO, "PPS file name no known");
350 return NULL;
351 }
352
353 node = build_spp_post_dev_data(ctx, &ns, session_id,
354 "MO upload");
355 if (node == NULL)
356 return NULL;
357 add_mo_container(ctx->xml, ns, node, URN_HS20_PPS, pps_fname);
358
359 ret_node = soap_send_receive(ctx->http, node);
360 if (ret_node == NULL)
361 return NULL;
362
363 debug_dump_node(ctx, "Received response to MO upload", ret_node);
364
365 if (hs20_spp_validate(ctx, ret_node, "sppPostDevDataResponse") < 0) {
366 wpa_printf(MSG_INFO, "SPP validation failed");
367 xml_node_free(ctx->xml, ret_node);
368 return NULL;
369 }
370
371 return ret_node;
372 }
373
374
hs20_add_mo(struct hs20_osu_client * ctx,xml_node_t * add_mo,char * fname,size_t fname_len)375 static int hs20_add_mo(struct hs20_osu_client *ctx, xml_node_t *add_mo,
376 char *fname, size_t fname_len)
377 {
378 char *uri, *urn;
379 int ret;
380
381 debug_dump_node(ctx, "Received addMO", add_mo);
382
383 urn = get_spp_attr_value(ctx->xml, add_mo, "moURN");
384 if (urn == NULL) {
385 wpa_printf(MSG_INFO, "[hs20] No moURN in addMO");
386 return -1;
387 }
388 wpa_printf(MSG_INFO, "addMO - moURN: '%s'", urn);
389 if (strcasecmp(urn, URN_HS20_PPS) != 0) {
390 wpa_printf(MSG_INFO, "[hs20] Unsupported MO in addMO");
391 xml_node_get_attr_value_free(ctx->xml, urn);
392 return -1;
393 }
394 xml_node_get_attr_value_free(ctx->xml, urn);
395
396 uri = get_spp_attr_value(ctx->xml, add_mo, "managementTreeURI");
397 if (uri == NULL) {
398 wpa_printf(MSG_INFO, "[hs20] No managementTreeURI in addMO");
399 return -1;
400 }
401 wpa_printf(MSG_INFO, "addMO - managementTreeURI: '%s'", uri);
402
403 ret = hs20_add_pps_mo(ctx, uri, add_mo, fname, fname_len);
404 xml_node_get_attr_value_free(ctx->xml, uri);
405 return ret;
406 }
407
408
process_spp_user_input_response(struct hs20_osu_client * ctx,const char * session_id,xml_node_t * add_mo)409 static int process_spp_user_input_response(struct hs20_osu_client *ctx,
410 const char *session_id,
411 xml_node_t *add_mo)
412 {
413 int ret;
414 char fname[300];
415
416 debug_dump_node(ctx, "addMO", add_mo);
417
418 wpa_printf(MSG_INFO, "Subscription registration completed");
419
420 if (hs20_add_mo(ctx, add_mo, fname, sizeof(fname)) < 0) {
421 wpa_printf(MSG_INFO, "Could not add MO");
422 ret = hs20_spp_update_response(
423 ctx, session_id,
424 "Error occurred",
425 "MO addition or update failed");
426 return 0;
427 }
428
429 ret = hs20_spp_update_response(ctx, session_id, "OK", NULL);
430 if (ret == 0)
431 hs20_sub_rem_complete(ctx, fname);
432
433 return 0;
434 }
435
436
hs20_spp_user_input_completed(struct hs20_osu_client * ctx,const char * session_id)437 static xml_node_t * hs20_spp_user_input_completed(struct hs20_osu_client *ctx,
438 const char *session_id)
439 {
440 xml_node_t *node, *ret_node;
441
442 node = build_spp_post_dev_data(ctx, NULL, session_id,
443 "User input completed");
444 if (node == NULL)
445 return NULL;
446
447 ret_node = soap_send_receive(ctx->http, node);
448 if (!ret_node) {
449 if (soap_reinit_client(ctx->http) < 0)
450 return NULL;
451 wpa_printf(MSG_INFO, "Try to finish with re-opened connection");
452 node = build_spp_post_dev_data(ctx, NULL, session_id,
453 "User input completed");
454 if (node == NULL)
455 return NULL;
456 ret_node = soap_send_receive(ctx->http, node);
457 if (ret_node == NULL)
458 return NULL;
459 wpa_printf(MSG_INFO, "Continue with new connection");
460 }
461
462 if (hs20_spp_validate(ctx, ret_node, "sppPostDevDataResponse") < 0) {
463 wpa_printf(MSG_INFO, "SPP validation failed");
464 xml_node_free(ctx->xml, ret_node);
465 return NULL;
466 }
467
468 return ret_node;
469 }
470
471
hs20_spp_get_certificate(struct hs20_osu_client * ctx,xml_node_t * cmd,const char * session_id,const char * pps_fname)472 static xml_node_t * hs20_spp_get_certificate(struct hs20_osu_client *ctx,
473 xml_node_t *cmd,
474 const char *session_id,
475 const char *pps_fname)
476 {
477 xml_namespace_t *ns;
478 xml_node_t *node, *ret_node;
479 int res;
480
481 wpa_printf(MSG_INFO, "Client certificate enrollment");
482
483 res = osu_get_certificate(ctx, cmd);
484 if (res < 0)
485 wpa_printf(MSG_INFO, "EST simpleEnroll failed");
486
487 node = build_spp_post_dev_data(ctx, &ns, session_id,
488 res == 0 ?
489 "Certificate enrollment completed" :
490 "Certificate enrollment failed");
491 if (node == NULL)
492 return NULL;
493
494 ret_node = soap_send_receive(ctx->http, node);
495 if (ret_node == NULL)
496 return NULL;
497
498 debug_dump_node(ctx, "Received response to certificate enrollment "
499 "completed", ret_node);
500
501 if (hs20_spp_validate(ctx, ret_node, "sppPostDevDataResponse") < 0) {
502 wpa_printf(MSG_INFO, "SPP validation failed");
503 xml_node_free(ctx->xml, ret_node);
504 return NULL;
505 }
506
507 return ret_node;
508 }
509
510
hs20_spp_exec(struct hs20_osu_client * ctx,xml_node_t * exec,const char * session_id,const char * pps_fname,xml_node_t * pps,xml_node_t ** ret_node)511 static int hs20_spp_exec(struct hs20_osu_client *ctx, xml_node_t *exec,
512 const char *session_id, const char *pps_fname,
513 xml_node_t *pps, xml_node_t **ret_node)
514 {
515 xml_node_t *cmd;
516 const char *name;
517 char *uri;
518 char *id = strdup(session_id);
519
520 if (id == NULL)
521 return -1;
522
523 *ret_node = NULL;
524
525 debug_dump_node(ctx, "exec", exec);
526
527 xml_node_for_each_child(ctx->xml, cmd, exec) {
528 xml_node_for_each_check(ctx->xml, cmd);
529 break;
530 }
531 if (!cmd) {
532 wpa_printf(MSG_INFO, "exec command element not found (cmd=%p)",
533 cmd);
534 free(id);
535 return -1;
536 }
537
538 name = xml_node_get_localname(ctx->xml, cmd);
539
540 if (strcasecmp(name, "launchBrowserToURI") == 0) {
541 int res;
542 uri = xml_node_get_text(ctx->xml, cmd);
543 if (!uri) {
544 wpa_printf(MSG_INFO, "No URI found");
545 free(id);
546 return -1;
547 }
548 wpa_printf(MSG_INFO, "Launch browser to URI '%s'", uri);
549 write_summary(ctx, "Launch browser to URI '%s'", uri);
550 res = hs20_web_browser(uri);
551 xml_node_get_text_free(ctx->xml, uri);
552 if (res > 0) {
553 wpa_printf(MSG_INFO, "User response in browser completed successfully - sessionid='%s'",
554 id);
555 write_summary(ctx, "User response in browser completed successfully");
556 *ret_node = hs20_spp_user_input_completed(ctx, id);
557 free(id);
558 return *ret_node ? 0 : -1;
559 } else {
560 wpa_printf(MSG_INFO, "Failed to receive user response");
561 write_summary(ctx, "Failed to receive user response");
562 hs20_spp_update_response(
563 ctx, id, "Error occurred", "Other");
564 free(id);
565 return -1;
566 }
567 return 0;
568 }
569
570 if (strcasecmp(name, "uploadMO") == 0) {
571 if (pps_fname == NULL)
572 return -1;
573 *ret_node = hs20_spp_upload_mo(ctx, cmd, id,
574 pps_fname);
575 free(id);
576 return *ret_node ? 0 : -1;
577 }
578
579 if (strcasecmp(name, "getCertificate") == 0) {
580 *ret_node = hs20_spp_get_certificate(ctx, cmd, id,
581 pps_fname);
582 free(id);
583 return *ret_node ? 0 : -1;
584 }
585
586 wpa_printf(MSG_INFO, "Unsupported exec command: '%s'", name);
587 free(id);
588 return -1;
589 }
590
591
592 enum spp_post_dev_data_use {
593 SPP_SUBSCRIPTION_REMEDIATION,
594 SPP_POLICY_UPDATE,
595 SPP_SUBSCRIPTION_REGISTRATION,
596 };
597
process_spp_post_dev_data_response(struct hs20_osu_client * ctx,enum spp_post_dev_data_use use,xml_node_t * node,const char * pps_fname,xml_node_t * pps)598 static void process_spp_post_dev_data_response(
599 struct hs20_osu_client *ctx,
600 enum spp_post_dev_data_use use, xml_node_t *node,
601 const char *pps_fname, xml_node_t *pps)
602 {
603 xml_node_t *child;
604 char *status = NULL;
605 xml_node_t *update = NULL, *exec = NULL, *add_mo = NULL, *no_mo = NULL;
606 char *session_id = NULL;
607
608 debug_dump_node(ctx, "sppPostDevDataResponse node", node);
609
610 status = get_spp_attr_value(ctx->xml, node, "sppStatus");
611 if (status == NULL) {
612 wpa_printf(MSG_INFO, "No sppStatus attribute");
613 goto out;
614 }
615 write_summary(ctx, "Received sppPostDevDataResponse sppStatus='%s'",
616 status);
617
618 session_id = get_spp_attr_value(ctx->xml, node, "sessionID");
619 if (session_id == NULL) {
620 wpa_printf(MSG_INFO, "No sessionID attribute");
621 goto out;
622 }
623
624 wpa_printf(MSG_INFO, "[hs20] sppPostDevDataResponse - sppStatus: '%s' sessionID: '%s'",
625 status, session_id);
626
627 xml_node_for_each_child(ctx->xml, child, node) {
628 const char *name;
629 xml_node_for_each_check(ctx->xml, child);
630 debug_dump_node(ctx, "child", child);
631 name = xml_node_get_localname(ctx->xml, child);
632 wpa_printf(MSG_INFO, "localname: '%s'", name);
633 if (!update && strcasecmp(name, "updateNode") == 0)
634 update = child;
635 if (!exec && strcasecmp(name, "exec") == 0)
636 exec = child;
637 if (!add_mo && strcasecmp(name, "addMO") == 0)
638 add_mo = child;
639 if (!no_mo && strcasecmp(name, "noMOUpdate") == 0)
640 no_mo = child;
641 }
642
643 if (use == SPP_SUBSCRIPTION_REMEDIATION &&
644 strcasecmp(status,
645 "Remediation complete, request sppUpdateResponse") == 0)
646 {
647 int res, ret;
648 if (!update && !no_mo) {
649 wpa_printf(MSG_INFO, "No updateNode or noMOUpdate element");
650 goto out;
651 }
652 wpa_printf(MSG_INFO, "Subscription remediation completed");
653 res = update_pps(ctx, update, pps_fname, pps);
654 if (res < 0)
655 wpa_printf(MSG_INFO, "Failed to update PPS MO");
656 ret = hs20_spp_update_response(
657 ctx, session_id,
658 res < 0 ? "Error occurred" : "OK",
659 res < 0 ? "MO addition or update failed" : NULL);
660 if (res == 0 && ret == 0)
661 hs20_sub_rem_complete(ctx, pps_fname);
662 goto out;
663 }
664
665 if (use == SPP_SUBSCRIPTION_REMEDIATION &&
666 strcasecmp(status, "Exchange complete, release TLS connection") ==
667 0) {
668 if (!no_mo) {
669 wpa_printf(MSG_INFO, "No noMOUpdate element");
670 goto out;
671 }
672 wpa_printf(MSG_INFO, "Subscription remediation completed (no MO update)");
673 goto out;
674 }
675
676 if (use == SPP_POLICY_UPDATE &&
677 strcasecmp(status, "Update complete, request sppUpdateResponse") ==
678 0) {
679 int res, ret;
680 wpa_printf(MSG_INFO, "Policy update received - update PPS");
681 res = update_pps(ctx, update, pps_fname, pps);
682 ret = hs20_spp_update_response(
683 ctx, session_id,
684 res < 0 ? "Error occurred" : "OK",
685 res < 0 ? "MO addition or update failed" : NULL);
686 if (res == 0 && ret == 0)
687 hs20_policy_update_complete(ctx, pps_fname);
688 goto out;
689 }
690
691 if (use == SPP_SUBSCRIPTION_REGISTRATION &&
692 strcasecmp(status, "Provisioning complete, request "
693 "sppUpdateResponse") == 0) {
694 if (!add_mo) {
695 wpa_printf(MSG_INFO, "No addMO element - not sure what to do next");
696 goto out;
697 }
698 process_spp_user_input_response(ctx, session_id, add_mo);
699 node = NULL;
700 goto out;
701 }
702
703 if (strcasecmp(status, "No update available at this time") == 0) {
704 wpa_printf(MSG_INFO, "No update available at this time");
705 goto out;
706 }
707
708 if (strcasecmp(status, "OK") == 0) {
709 int res;
710 xml_node_t *ret;
711
712 if (!exec) {
713 wpa_printf(MSG_INFO, "No exec element - not sure what to do next");
714 goto out;
715 }
716 res = hs20_spp_exec(ctx, exec, session_id,
717 pps_fname, pps, &ret);
718 /* xml_node_free(ctx->xml, node); */
719 node = NULL;
720 if (res == 0 && ret)
721 process_spp_post_dev_data_response(ctx, use,
722 ret, pps_fname, pps);
723 goto out;
724 }
725
726 if (strcasecmp(status, "Error occurred") == 0) {
727 xml_node_t *err;
728 char *code = NULL;
729 err = get_node(ctx->xml, node, "sppError");
730 if (err)
731 code = xml_node_get_attr_value(ctx->xml, err,
732 "errorCode");
733 wpa_printf(MSG_INFO, "Error occurred - errorCode=%s",
734 code ? code : "N/A");
735 xml_node_get_attr_value_free(ctx->xml, code);
736 goto out;
737 }
738
739 wpa_printf(MSG_INFO,
740 "[hs20] Unsupported sppPostDevDataResponse sppStatus '%s'",
741 status);
742 out:
743 xml_node_get_attr_value_free(ctx->xml, status);
744 xml_node_get_attr_value_free(ctx->xml, session_id);
745 xml_node_free(ctx->xml, node);
746 }
747
748
spp_post_dev_data(struct hs20_osu_client * ctx,enum spp_post_dev_data_use use,const char * reason,const char * pps_fname,xml_node_t * pps)749 static int spp_post_dev_data(struct hs20_osu_client *ctx,
750 enum spp_post_dev_data_use use,
751 const char *reason,
752 const char *pps_fname, xml_node_t *pps)
753 {
754 xml_node_t *payload;
755 xml_node_t *ret_node;
756
757 payload = build_spp_post_dev_data(ctx, NULL, NULL, reason);
758 if (payload == NULL)
759 return -1;
760
761 ret_node = soap_send_receive(ctx->http, payload);
762 if (!ret_node) {
763 const char *err = http_get_err(ctx->http);
764 if (err) {
765 wpa_printf(MSG_INFO, "HTTP error: %s", err);
766 write_result(ctx, "HTTP error: %s", err);
767 } else {
768 write_summary(ctx, "Failed to send SOAP message");
769 }
770 return -1;
771 }
772
773 if (hs20_spp_validate(ctx, ret_node, "sppPostDevDataResponse") < 0) {
774 wpa_printf(MSG_INFO, "SPP validation failed");
775 xml_node_free(ctx->xml, ret_node);
776 return -1;
777 }
778
779 process_spp_post_dev_data_response(ctx, use, ret_node,
780 pps_fname, pps);
781 return 0;
782 }
783
784
spp_sub_rem(struct hs20_osu_client * ctx,const char * address,const char * pps_fname,const char * client_cert,const char * client_key,const char * cred_username,const char * cred_password,xml_node_t * pps)785 void spp_sub_rem(struct hs20_osu_client *ctx, const char *address,
786 const char *pps_fname,
787 const char *client_cert, const char *client_key,
788 const char *cred_username, const char *cred_password,
789 xml_node_t *pps)
790 {
791 wpa_printf(MSG_INFO, "SPP subscription remediation");
792 write_summary(ctx, "SPP subscription remediation");
793
794 os_free(ctx->server_url);
795 ctx->server_url = os_strdup(address);
796
797 if (soap_init_client(ctx->http, address, ctx->ca_fname,
798 cred_username, cred_password, client_cert,
799 client_key) == 0) {
800 spp_post_dev_data(ctx, SPP_SUBSCRIPTION_REMEDIATION,
801 "Subscription remediation", pps_fname, pps);
802 }
803 }
804
805
hs20_policy_update_complete(struct hs20_osu_client * ctx,const char * pps_fname)806 static void hs20_policy_update_complete(struct hs20_osu_client *ctx,
807 const char *pps_fname)
808 {
809 wpa_printf(MSG_INFO, "Policy update completed");
810
811 /*
812 * Update wpa_supplicant credentials and reconnect using updated
813 * information.
814 */
815 wpa_printf(MSG_INFO, "Updating wpa_supplicant credentials");
816 cmd_set_pps(ctx, pps_fname);
817
818 wpa_printf(MSG_INFO, "Requesting reconnection with updated configuration");
819 if (wpa_command(ctx->ifname, "INTERWORKING_SELECT auto") < 0)
820 wpa_printf(MSG_ERROR, "Failed to request wpa_supplicant to reconnect");
821 }
822
823
process_spp_exchange_complete(struct hs20_osu_client * ctx,xml_node_t * node)824 static int process_spp_exchange_complete(struct hs20_osu_client *ctx,
825 xml_node_t *node)
826 {
827 char *status, *session_id;
828
829 debug_dump_node(ctx, "sppExchangeComplete", node);
830
831 status = get_spp_attr_value(ctx->xml, node, "sppStatus");
832 if (status == NULL) {
833 wpa_printf(MSG_INFO, "No sppStatus attribute");
834 return -1;
835 }
836 write_summary(ctx, "Received sppExchangeComplete sppStatus='%s'",
837 status);
838
839 session_id = get_spp_attr_value(ctx->xml, node, "sessionID");
840 if (session_id == NULL) {
841 wpa_printf(MSG_INFO, "No sessionID attribute");
842 xml_node_get_attr_value_free(ctx->xml, status);
843 return -1;
844 }
845
846 wpa_printf(MSG_INFO, "[hs20] sppStatus: '%s' sessionID: '%s'",
847 status, session_id);
848 xml_node_get_attr_value_free(ctx->xml, session_id);
849
850 if (strcasecmp(status, "Exchange complete, release TLS connection") ==
851 0) {
852 xml_node_get_attr_value_free(ctx->xml, status);
853 return 0;
854 }
855
856 wpa_printf(MSG_INFO, "Unexpected sppStatus '%s'", status);
857 write_summary(ctx, "Unexpected sppStatus '%s'", status);
858 xml_node_get_attr_value_free(ctx->xml, status);
859 return -1;
860 }
861
862
build_spp_update_response(struct hs20_osu_client * ctx,const char * session_id,const char * spp_status,const char * error_code)863 static xml_node_t * build_spp_update_response(struct hs20_osu_client *ctx,
864 const char *session_id,
865 const char *spp_status,
866 const char *error_code)
867 {
868 xml_namespace_t *ns;
869 xml_node_t *spp_node, *node;
870
871 spp_node = xml_node_create_root(ctx->xml, SPP_NS_URI, "spp", &ns,
872 "sppUpdateResponse");
873 if (spp_node == NULL)
874 return NULL;
875
876 xml_node_add_attr(ctx->xml, spp_node, ns, "sppVersion", "1.0");
877 xml_node_add_attr(ctx->xml, spp_node, ns, "sessionID", session_id);
878 xml_node_add_attr(ctx->xml, spp_node, ns, "sppStatus", spp_status);
879
880 if (error_code) {
881 node = xml_node_create(ctx->xml, spp_node, ns, "sppError");
882 if (node)
883 xml_node_add_attr(ctx->xml, node, NULL, "errorCode",
884 error_code);
885 }
886
887 return spp_node;
888 }
889
890
hs20_spp_update_response(struct hs20_osu_client * ctx,const char * session_id,const char * spp_status,const char * error_code)891 static int hs20_spp_update_response(struct hs20_osu_client *ctx,
892 const char *session_id,
893 const char *spp_status,
894 const char *error_code)
895 {
896 xml_node_t *node, *ret_node;
897 int ret;
898
899 write_summary(ctx, "Building sppUpdateResponse sppStatus='%s' error_code='%s'",
900 spp_status, error_code);
901 node = build_spp_update_response(ctx, session_id, spp_status,
902 error_code);
903 if (node == NULL)
904 return -1;
905 ret_node = soap_send_receive(ctx->http, node);
906 if (!ret_node) {
907 if (soap_reinit_client(ctx->http) < 0)
908 return -1;
909 wpa_printf(MSG_INFO, "Try to finish with re-opened connection");
910 node = build_spp_update_response(ctx, session_id, spp_status,
911 error_code);
912 if (node == NULL)
913 return -1;
914 ret_node = soap_send_receive(ctx->http, node);
915 if (ret_node == NULL)
916 return -1;
917 wpa_printf(MSG_INFO, "Continue with new connection");
918 }
919
920 if (hs20_spp_validate(ctx, ret_node, "sppExchangeComplete") < 0) {
921 wpa_printf(MSG_INFO, "SPP validation failed");
922 xml_node_free(ctx->xml, ret_node);
923 return -1;
924 }
925
926 ret = process_spp_exchange_complete(ctx, ret_node);
927 xml_node_free(ctx->xml, ret_node);
928 return ret;
929 }
930
931
spp_pol_upd(struct hs20_osu_client * ctx,const char * address,const char * pps_fname,const char * client_cert,const char * client_key,const char * cred_username,const char * cred_password,xml_node_t * pps)932 void spp_pol_upd(struct hs20_osu_client *ctx, const char *address,
933 const char *pps_fname,
934 const char *client_cert, const char *client_key,
935 const char *cred_username, const char *cred_password,
936 xml_node_t *pps)
937 {
938 wpa_printf(MSG_INFO, "SPP policy update");
939 write_summary(ctx, "SPP policy update");
940
941 os_free(ctx->server_url);
942 ctx->server_url = os_strdup(address);
943
944 if (soap_init_client(ctx->http, address, ctx->ca_fname, cred_username,
945 cred_password, client_cert, client_key) == 0) {
946 spp_post_dev_data(ctx, SPP_POLICY_UPDATE, "Policy update",
947 pps_fname, pps);
948 }
949 }
950
951
cmd_prov(struct hs20_osu_client * ctx,const char * url)952 int cmd_prov(struct hs20_osu_client *ctx, const char *url)
953 {
954 unlink("Cert/est_cert.der");
955 unlink("Cert/est_cert.pem");
956
957 if (url == NULL) {
958 wpa_printf(MSG_INFO, "Invalid prov command (missing URL)");
959 return -1;
960 }
961
962 wpa_printf(MSG_INFO,
963 "Credential provisioning requested - URL: %s ca_fname: %s",
964 url, ctx->ca_fname ? ctx->ca_fname : "N/A");
965
966 os_free(ctx->server_url);
967 ctx->server_url = os_strdup(url);
968
969 if (soap_init_client(ctx->http, url, ctx->ca_fname, NULL, NULL, NULL,
970 NULL) < 0)
971 return -1;
972 spp_post_dev_data(ctx, SPP_SUBSCRIPTION_REGISTRATION,
973 "Subscription registration", NULL, NULL);
974
975 return ctx->pps_cred_set ? 0 : -1;
976 }
977
978
cmd_sim_prov(struct hs20_osu_client * ctx,const char * url)979 int cmd_sim_prov(struct hs20_osu_client *ctx, const char *url)
980 {
981 if (url == NULL) {
982 wpa_printf(MSG_INFO, "Invalid prov command (missing URL)");
983 return -1;
984 }
985
986 wpa_printf(MSG_INFO, "SIM provisioning requested");
987
988 os_free(ctx->server_url);
989 ctx->server_url = os_strdup(url);
990
991 wpa_printf(MSG_INFO, "Wait for IP address before starting SIM provisioning");
992
993 if (wait_ip_addr(ctx->ifname, 15) < 0) {
994 wpa_printf(MSG_INFO, "Could not get IP address for WLAN - try connection anyway");
995 }
996
997 if (soap_init_client(ctx->http, url, ctx->ca_fname, NULL, NULL, NULL,
998 NULL) < 0)
999 return -1;
1000 spp_post_dev_data(ctx, SPP_SUBSCRIPTION_REGISTRATION,
1001 "Subscription provisioning", NULL, NULL);
1002
1003 return ctx->pps_cred_set ? 0 : -1;
1004 }
1005