Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2023, 2024, 2026 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU General Public License as published by the Free Software
7 : Foundation; either version 3, or (at your option) any later version.
8 :
9 : TALER is distributed in the hope that it will be useful, but WITHOUT ANY
10 : WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11 : A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12 :
13 : You should have received a copy of the GNU General Public License along with
14 : TALER; see the file COPYING. If not, see
15 : <http://www.gnu.org/licenses/>
16 : */
17 : /**
18 : * @file lib/exchange_api_get-aml-OFFICER_PUB-measures.c
19 : * @brief Implementation of the GET /aml/$OFFICER_PUB/measures request
20 : * @author Christian Grothoff
21 : */
22 : #include <microhttpd.h> /* just for HTTP status codes */
23 : #include <gnunet/gnunet_util_lib.h>
24 : #include <gnunet/gnunet_curl_lib.h>
25 : #include "taler/taler_json_lib.h"
26 : #include "taler/exchange/get-aml-OFFICER_PUB-measures.h"
27 : #include "exchange_api_handle.h"
28 : #include "taler/taler_signatures.h"
29 : #include "exchange_api_curl_defaults.h"
30 :
31 :
32 : /**
33 : * Scrap buffer of temporary arrays.
34 : */
35 : struct Scrap
36 : {
37 : /**
38 : * Kept in DLL.
39 : */
40 : struct Scrap *next;
41 :
42 : /**
43 : * Kept in DLL.
44 : */
45 : struct Scrap *prev;
46 :
47 : /**
48 : * Pointer to our allocation.
49 : */
50 : const char **ptr;
51 : };
52 :
53 :
54 : /**
55 : * @brief A GET /aml/$OFFICER_PUB/measures Handle
56 : */
57 : struct TALER_EXCHANGE_GetAmlMeasuresHandle
58 : {
59 :
60 : /**
61 : * The base URL of the exchange.
62 : */
63 : char *base_url;
64 :
65 : /**
66 : * The full URL for this request, set during _start.
67 : */
68 : char *url;
69 :
70 : /**
71 : * Handle for the request.
72 : */
73 : struct GNUNET_CURL_Job *job;
74 :
75 : /**
76 : * Function to call with the result.
77 : */
78 : TALER_EXCHANGE_GetAmlMeasuresCallback cb;
79 :
80 : /**
81 : * Closure for @e cb.
82 : */
83 : TALER_EXCHANGE_GET_AML_MEASURES_RESULT_CLOSURE *cb_cls;
84 :
85 : /**
86 : * Reference to the execution context.
87 : */
88 : struct GNUNET_CURL_Context *ctx;
89 :
90 : /**
91 : * Public key of the AML officer.
92 : */
93 : struct TALER_AmlOfficerPublicKeyP officer_pub;
94 :
95 : /**
96 : * Private key of the AML officer (for signing).
97 : */
98 : struct TALER_AmlOfficerPrivateKeyP officer_priv;
99 :
100 : /**
101 : * Head of scrap list.
102 : */
103 : struct Scrap *scrap_head;
104 :
105 : /**
106 : * Tail of scrap list.
107 : */
108 : struct Scrap *scrap_tail;
109 : };
110 :
111 :
112 : /**
113 : * Create array of length @a len in scrap book.
114 : *
115 : * @param[in,out] amh context for allocations
116 : * @param len length of array
117 : * @return scrap array
118 : */
119 : static const char **
120 0 : make_scrap (
121 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh,
122 : unsigned int len)
123 : {
124 0 : struct Scrap *s = GNUNET_new (struct Scrap);
125 :
126 0 : s->ptr = GNUNET_new_array (len,
127 : const char *);
128 0 : GNUNET_CONTAINER_DLL_insert (amh->scrap_head,
129 : amh->scrap_tail,
130 : s);
131 0 : return s->ptr;
132 : }
133 :
134 :
135 : /**
136 : * Free all scrap space.
137 : *
138 : * @param[in,out] amh scrap context
139 : */
140 : static void
141 0 : free_scrap (struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh)
142 : {
143 : struct Scrap *s;
144 :
145 0 : while (NULL != (s = amh->scrap_head))
146 : {
147 0 : GNUNET_CONTAINER_DLL_remove (amh->scrap_head,
148 : amh->scrap_tail,
149 : s);
150 0 : GNUNET_free (s->ptr);
151 0 : GNUNET_free (s);
152 : }
153 0 : }
154 :
155 :
156 : /**
157 : * Convert JSON array of strings to string array.
158 : *
159 : * @param j JSON array to convert
160 : * @param[out] a array to initialize
161 : * @return true on success
162 : */
163 : static bool
164 0 : j_to_a (const json_t *j,
165 : const char **a)
166 : {
167 : const json_t *e;
168 : size_t idx;
169 :
170 0 : json_array_foreach ((json_t *) j, idx, e)
171 : {
172 0 : if (NULL == (a[idx] = json_string_value (e)))
173 0 : return false;
174 : }
175 0 : return true;
176 : }
177 :
178 :
179 : /**
180 : * Parse AML root measures.
181 : *
182 : * @param jroots JSON object with measure data
183 : * @param[out] roots where to write the result
184 : * @return #GNUNET_OK on success
185 : */
186 : static enum GNUNET_GenericReturnValue
187 0 : parse_aml_roots (
188 : const json_t *jroots,
189 : struct TALER_EXCHANGE_GetAmlMeasuresMeasureInfo *roots)
190 : {
191 : const json_t *obj;
192 : const char *name;
193 0 : size_t idx = 0;
194 :
195 0 : json_object_foreach ((json_t *) jroots, name, obj)
196 : {
197 0 : struct TALER_EXCHANGE_GetAmlMeasuresMeasureInfo *root = &roots[idx++];
198 : struct GNUNET_JSON_Specification spec[] = {
199 0 : GNUNET_JSON_spec_string ("check_name",
200 : &root->check_name),
201 0 : GNUNET_JSON_spec_mark_optional (
202 : GNUNET_JSON_spec_string ("prog_name",
203 : &root->prog_name),
204 : NULL),
205 0 : GNUNET_JSON_spec_mark_optional (
206 : GNUNET_JSON_spec_object_const ("context",
207 : &root->context),
208 : NULL),
209 0 : GNUNET_JSON_spec_mark_optional (
210 : GNUNET_JSON_spec_string ("operation_type",
211 : &root->operation_type),
212 : NULL),
213 0 : GNUNET_JSON_spec_mark_optional (
214 : GNUNET_JSON_spec_bool ("voluntary",
215 : &root->voluntary),
216 : NULL),
217 0 : GNUNET_JSON_spec_end ()
218 : };
219 :
220 0 : if (GNUNET_OK !=
221 0 : GNUNET_JSON_parse (obj,
222 : spec,
223 : NULL,
224 : NULL))
225 : {
226 0 : GNUNET_break_op (0);
227 0 : return GNUNET_SYSERR;
228 : }
229 0 : root->measure_name = name;
230 : }
231 0 : return GNUNET_OK;
232 : }
233 :
234 :
235 : /**
236 : * Parse AML programs.
237 : *
238 : * @param[in,out] amh context for allocations
239 : * @param jprogs JSON object with program data
240 : * @param[out] progs where to write the result
241 : * @return #GNUNET_OK on success
242 : */
243 : static enum GNUNET_GenericReturnValue
244 0 : parse_aml_programs (
245 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh,
246 : const json_t *jprogs,
247 : struct TALER_EXCHANGE_GetAmlMeasuresProgramRequirement *progs)
248 : {
249 : const json_t *obj;
250 : const char *name;
251 0 : size_t idx = 0;
252 :
253 0 : json_object_foreach ((json_t *) jprogs, name, obj)
254 : {
255 0 : struct TALER_EXCHANGE_GetAmlMeasuresProgramRequirement *prog = &progs[idx++]
256 : ;
257 : const json_t *jcontext;
258 : const json_t *jinputs;
259 : struct GNUNET_JSON_Specification spec[] = {
260 0 : GNUNET_JSON_spec_string ("description",
261 : &prog->description),
262 0 : GNUNET_JSON_spec_array_const ("context",
263 : &jcontext),
264 0 : GNUNET_JSON_spec_array_const ("inputs",
265 : &jinputs),
266 0 : GNUNET_JSON_spec_end ()
267 : };
268 : unsigned int len;
269 : const char **ptr;
270 :
271 0 : if (GNUNET_OK !=
272 0 : GNUNET_JSON_parse (obj,
273 : spec,
274 : NULL,
275 : NULL))
276 : {
277 0 : GNUNET_break_op (0);
278 0 : return GNUNET_SYSERR;
279 : }
280 0 : prog->prog_name = name;
281 0 : prog->contexts_length = json_array_size (jcontext);
282 0 : prog->inputs_length = json_array_size (jinputs);
283 0 : len = (unsigned int) (prog->contexts_length + prog->inputs_length);
284 0 : if ( ((size_t) len) != prog->contexts_length + prog->inputs_length)
285 : {
286 0 : GNUNET_break_op (0);
287 0 : return GNUNET_SYSERR;
288 : }
289 0 : ptr = make_scrap (amh, len);
290 0 : prog->contexts = ptr;
291 0 : if (! j_to_a (jcontext, prog->contexts))
292 : {
293 0 : GNUNET_break_op (0);
294 0 : return GNUNET_SYSERR;
295 : }
296 0 : prog->inputs = &ptr[prog->contexts_length];
297 0 : if (! j_to_a (jinputs, prog->inputs))
298 : {
299 0 : GNUNET_break_op (0);
300 0 : return GNUNET_SYSERR;
301 : }
302 : }
303 0 : return GNUNET_OK;
304 : }
305 :
306 :
307 : /**
308 : * Parse KYC checks.
309 : *
310 : * @param[in,out] amh context for allocations
311 : * @param jchecks JSON object with check data
312 : * @param[out] checks where to write the result
313 : * @return #GNUNET_OK on success
314 : */
315 : static enum GNUNET_GenericReturnValue
316 0 : parse_aml_checks (
317 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh,
318 : const json_t *jchecks,
319 : struct TALER_EXCHANGE_GetAmlMeasuresCheckInfo *checks)
320 : {
321 : const json_t *obj;
322 : const char *name;
323 0 : size_t idx = 0;
324 :
325 0 : json_object_foreach ((json_t *) jchecks, name, obj)
326 : {
327 0 : struct TALER_EXCHANGE_GetAmlMeasuresCheckInfo *check = &checks[idx++];
328 : const json_t *jrequires;
329 : const json_t *joutputs;
330 : struct GNUNET_JSON_Specification spec[] = {
331 0 : GNUNET_JSON_spec_string ("description",
332 : &check->description),
333 0 : GNUNET_JSON_spec_mark_optional (
334 : GNUNET_JSON_spec_object_const ("description_i18n",
335 : &check->description_i18n),
336 : NULL),
337 0 : GNUNET_JSON_spec_array_const ("requires",
338 : &jrequires),
339 0 : GNUNET_JSON_spec_array_const ("outputs",
340 : &joutputs),
341 0 : GNUNET_JSON_spec_string ("fallback",
342 : &check->fallback),
343 0 : GNUNET_JSON_spec_end ()
344 : };
345 : unsigned int len;
346 : const char **ptr;
347 :
348 0 : if (GNUNET_OK !=
349 0 : GNUNET_JSON_parse (obj,
350 : spec,
351 : NULL,
352 : NULL))
353 : {
354 0 : GNUNET_break_op (0);
355 0 : return GNUNET_SYSERR;
356 : }
357 0 : check->check_name = name;
358 0 : check->requires_length = json_array_size (jrequires);
359 0 : check->outputs_length = json_array_size (joutputs);
360 0 : len = (unsigned int) (check->requires_length + check->outputs_length);
361 0 : if ( ((size_t) len) != check->requires_length + check->outputs_length)
362 : {
363 0 : GNUNET_break_op (0);
364 0 : return GNUNET_SYSERR;
365 : }
366 0 : ptr = make_scrap (amh, len);
367 0 : check->requires = ptr;
368 0 : if (! j_to_a (jrequires, check->requires))
369 : {
370 0 : GNUNET_break_op (0);
371 0 : return GNUNET_SYSERR;
372 : }
373 0 : check->outputs = &ptr[check->requires_length];
374 0 : if (! j_to_a (joutputs, check->outputs))
375 : {
376 0 : GNUNET_break_op (0);
377 0 : return GNUNET_SYSERR;
378 : }
379 : }
380 0 : return GNUNET_OK;
381 : }
382 :
383 :
384 : /**
385 : * Parse default KYC rules from the default_rules array.
386 : *
387 : * @param[in,out] amh context for allocations
388 : * @param jrules JSON array with rule data
389 : * @param[out] rules where to write the result
390 : * @return #GNUNET_OK on success
391 : */
392 : static enum GNUNET_GenericReturnValue
393 0 : parse_default_rules (
394 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh,
395 : const json_t *jrules,
396 : struct TALER_EXCHANGE_GetAmlMeasuresKycRule *rules)
397 : {
398 : const json_t *obj;
399 : size_t idx;
400 :
401 0 : json_array_foreach ((json_t *) jrules, idx, obj)
402 : {
403 0 : struct TALER_EXCHANGE_GetAmlMeasuresKycRule *rule = &rules[idx];
404 : const json_t *jmeasures;
405 : struct GNUNET_JSON_Specification spec[] = {
406 0 : TALER_JSON_spec_kycte ("operation_type",
407 : &rule->operation_type),
408 0 : GNUNET_JSON_spec_mark_optional (
409 : GNUNET_JSON_spec_string ("rule_name",
410 : &rule->rule_name),
411 : NULL),
412 0 : TALER_JSON_spec_amount_any ("threshold",
413 : &rule->threshold),
414 0 : GNUNET_JSON_spec_relative_time ("timeframe",
415 : &rule->timeframe),
416 0 : GNUNET_JSON_spec_array_const ("measures",
417 : &jmeasures),
418 0 : GNUNET_JSON_spec_mark_optional (
419 : GNUNET_JSON_spec_bool ("exposed",
420 : &rule->exposed),
421 : NULL),
422 0 : GNUNET_JSON_spec_mark_optional (
423 : GNUNET_JSON_spec_bool ("is_and_combinator",
424 : &rule->is_and_combinator),
425 : NULL),
426 0 : GNUNET_JSON_spec_int64 ("display_priority",
427 : &rule->display_priority),
428 0 : GNUNET_JSON_spec_end ()
429 : };
430 :
431 0 : if (GNUNET_OK !=
432 0 : GNUNET_JSON_parse (obj,
433 : spec,
434 : NULL,
435 : NULL))
436 : {
437 0 : GNUNET_break_op (0);
438 0 : return GNUNET_SYSERR;
439 : }
440 0 : rule->measures_length = json_array_size (jmeasures);
441 : {
442 0 : const char **ptr = make_scrap (amh,
443 0 : (unsigned int) rule->measures_length);
444 :
445 0 : rule->measures = ptr;
446 0 : if (! j_to_a (jmeasures,
447 : ptr))
448 : {
449 0 : GNUNET_break_op (0);
450 0 : return GNUNET_SYSERR;
451 : }
452 : }
453 : }
454 0 : return GNUNET_OK;
455 : }
456 :
457 :
458 : /**
459 : * Parse the provided measures data from the "200 OK" response.
460 : *
461 : * @param[in,out] amh handle (callback may be zero'ed out)
462 : * @param json json reply with the data
463 : * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
464 : */
465 : static enum GNUNET_GenericReturnValue
466 0 : parse_get_aml_measures_ok (struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh,
467 : const json_t *json)
468 : {
469 0 : struct TALER_EXCHANGE_GetAmlMeasuresResponse lr = {
470 : .hr.reply = json,
471 : .hr.http_status = MHD_HTTP_OK
472 : };
473 : const json_t *jroots;
474 : const json_t *jprograms;
475 : const json_t *jchecks;
476 0 : const json_t *jdefault_rules = NULL;
477 : struct GNUNET_JSON_Specification spec[] = {
478 0 : GNUNET_JSON_spec_object_const ("roots",
479 : &jroots),
480 0 : GNUNET_JSON_spec_object_const ("programs",
481 : &jprograms),
482 0 : GNUNET_JSON_spec_object_const ("checks",
483 : &jchecks),
484 0 : GNUNET_JSON_spec_mark_optional (
485 : GNUNET_JSON_spec_array_const ("default_rules",
486 : &jdefault_rules),
487 : NULL),
488 0 : GNUNET_JSON_spec_end ()
489 : };
490 :
491 0 : if (GNUNET_OK !=
492 0 : GNUNET_JSON_parse (json,
493 : spec,
494 : NULL,
495 : NULL))
496 : {
497 0 : GNUNET_break_op (0);
498 0 : return GNUNET_SYSERR;
499 : }
500 :
501 0 : lr.details.ok.roots_length = json_object_size (jroots);
502 0 : lr.details.ok.programs_length = json_object_size (jprograms);
503 0 : lr.details.ok.checks_length = json_object_size (jchecks);
504 0 : lr.details.ok.default_rules_length =
505 0 : (NULL != jdefault_rules) ? json_array_size (jdefault_rules) : 0;
506 :
507 0 : {
508 0 : struct TALER_EXCHANGE_GetAmlMeasuresMeasureInfo roots[
509 0 : GNUNET_NZL (lr.details.ok.roots_length)];
510 0 : struct TALER_EXCHANGE_GetAmlMeasuresProgramRequirement progs[
511 0 : GNUNET_NZL (lr.details.ok.programs_length)];
512 0 : struct TALER_EXCHANGE_GetAmlMeasuresCheckInfo checks[
513 0 : GNUNET_NZL (lr.details.ok.checks_length)];
514 0 : struct TALER_EXCHANGE_GetAmlMeasuresKycRule drules[
515 0 : GNUNET_NZL (lr.details.ok.default_rules_length)];
516 : enum GNUNET_GenericReturnValue ret;
517 :
518 0 : memset (roots, 0, sizeof (roots));
519 0 : memset (progs, 0, sizeof (progs));
520 0 : memset (checks, 0, sizeof (checks));
521 0 : memset (drules, 0, sizeof (drules));
522 0 : lr.details.ok.roots = roots;
523 0 : lr.details.ok.programs = progs;
524 0 : lr.details.ok.checks = checks;
525 0 : lr.details.ok.default_rules = drules;
526 :
527 0 : ret = parse_aml_roots (jroots, roots);
528 0 : if (GNUNET_OK == ret)
529 0 : ret = parse_aml_programs (amh, jprograms, progs);
530 0 : if (GNUNET_OK == ret)
531 0 : ret = parse_aml_checks (amh, jchecks, checks);
532 0 : if ( (GNUNET_OK == ret) && (NULL != jdefault_rules) )
533 0 : ret = parse_default_rules (amh, jdefault_rules, drules);
534 0 : if (GNUNET_OK == ret)
535 : {
536 0 : amh->cb (amh->cb_cls,
537 : &lr);
538 0 : amh->cb = NULL;
539 : }
540 0 : free_scrap (amh);
541 0 : return ret;
542 : }
543 : }
544 :
545 :
546 : /**
547 : * Function called when we're done processing the
548 : * HTTP GET /aml/$OFFICER_PUB/measures request.
549 : *
550 : * @param cls the `struct TALER_EXCHANGE_GetAmlMeasuresHandle`
551 : * @param response_code HTTP response code, 0 on error
552 : * @param response parsed JSON result, NULL on error
553 : */
554 : static void
555 0 : handle_get_aml_measures_finished (void *cls,
556 : long response_code,
557 : const void *response)
558 : {
559 0 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh = cls;
560 0 : const json_t *j = response;
561 0 : struct TALER_EXCHANGE_GetAmlMeasuresResponse lr = {
562 : .hr.reply = j,
563 0 : .hr.http_status = (unsigned int) response_code
564 : };
565 :
566 0 : amh->job = NULL;
567 0 : switch (response_code)
568 : {
569 0 : case 0:
570 0 : lr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
571 0 : break;
572 0 : case MHD_HTTP_OK:
573 0 : if (GNUNET_OK !=
574 0 : parse_get_aml_measures_ok (amh,
575 : j))
576 : {
577 0 : GNUNET_break_op (0);
578 0 : lr.hr.http_status = 0;
579 0 : lr.hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
580 0 : break;
581 : }
582 0 : GNUNET_assert (NULL == amh->cb);
583 0 : TALER_EXCHANGE_get_aml_measures_cancel (amh);
584 0 : return;
585 0 : case MHD_HTTP_NO_CONTENT:
586 0 : break;
587 0 : case MHD_HTTP_BAD_REQUEST:
588 0 : lr.hr.ec = TALER_JSON_get_error_code (j);
589 0 : lr.hr.hint = TALER_JSON_get_error_hint (j);
590 0 : break;
591 0 : case MHD_HTTP_FORBIDDEN:
592 0 : lr.hr.ec = TALER_JSON_get_error_code (j);
593 0 : lr.hr.hint = TALER_JSON_get_error_hint (j);
594 0 : break;
595 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
596 0 : lr.hr.ec = TALER_JSON_get_error_code (j);
597 0 : lr.hr.hint = TALER_JSON_get_error_hint (j);
598 0 : break;
599 0 : default:
600 : /* unexpected response code */
601 0 : GNUNET_break_op (0);
602 0 : lr.hr.ec = TALER_JSON_get_error_code (j);
603 0 : lr.hr.hint = TALER_JSON_get_error_hint (j);
604 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
605 : "Unexpected response code %u/%d for GET AML measures\n",
606 : (unsigned int) response_code,
607 : (int) lr.hr.ec);
608 0 : break;
609 : }
610 0 : if (NULL != amh->cb)
611 0 : amh->cb (amh->cb_cls,
612 : &lr);
613 0 : TALER_EXCHANGE_get_aml_measures_cancel (amh);
614 : }
615 :
616 :
617 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *
618 0 : TALER_EXCHANGE_get_aml_measures_create (
619 : struct GNUNET_CURL_Context *ctx,
620 : const char *url,
621 : const struct TALER_AmlOfficerPrivateKeyP *officer_priv)
622 : {
623 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh;
624 :
625 0 : amh = GNUNET_new (struct TALER_EXCHANGE_GetAmlMeasuresHandle);
626 0 : amh->ctx = ctx;
627 0 : amh->base_url = GNUNET_strdup (url);
628 0 : amh->officer_priv = *officer_priv;
629 0 : GNUNET_CRYPTO_eddsa_key_get_public (&officer_priv->eddsa_priv,
630 : &amh->officer_pub.eddsa_pub);
631 0 : return amh;
632 : }
633 :
634 :
635 : enum TALER_ErrorCode
636 0 : TALER_EXCHANGE_get_aml_measures_start (
637 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh,
638 : TALER_EXCHANGE_GetAmlMeasuresCallback cb,
639 : TALER_EXCHANGE_GET_AML_MEASURES_RESULT_CLOSURE *cb_cls)
640 : {
641 : CURL *eh;
642 : struct TALER_AmlOfficerSignatureP officer_sig;
643 : char arg_str[sizeof (struct TALER_AmlOfficerPublicKeyP) * 2 + 32];
644 0 : struct curl_slist *job_headers = NULL;
645 :
646 0 : amh->cb = cb;
647 0 : amh->cb_cls = cb_cls;
648 :
649 : /* Build AML officer signature */
650 0 : TALER_officer_aml_query_sign (&amh->officer_priv,
651 : &officer_sig);
652 :
653 : /* Build the path component: aml/{officer_pub}/measures */
654 : {
655 : char pub_str[sizeof (amh->officer_pub) * 2];
656 : char *end;
657 :
658 0 : end = GNUNET_STRINGS_data_to_string (
659 0 : &amh->officer_pub,
660 : sizeof (amh->officer_pub),
661 : pub_str,
662 : sizeof (pub_str));
663 0 : *end = '\0';
664 0 : GNUNET_snprintf (arg_str,
665 : sizeof (arg_str),
666 : "aml/%s/measures",
667 : pub_str);
668 : }
669 :
670 0 : amh->url = TALER_url_join (amh->base_url,
671 : arg_str,
672 : NULL);
673 0 : if (NULL == amh->url)
674 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
675 :
676 0 : eh = TALER_EXCHANGE_curl_easy_get_ (amh->url);
677 0 : if (NULL == eh)
678 : {
679 0 : GNUNET_break (0);
680 0 : GNUNET_free (amh->url);
681 0 : amh->url = NULL;
682 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
683 : }
684 :
685 : /* Build job headers with AML officer signature */
686 : {
687 : char *hdr;
688 : char sig_str[sizeof (officer_sig) * 2];
689 : char *end;
690 :
691 0 : end = GNUNET_STRINGS_data_to_string (
692 : &officer_sig,
693 : sizeof (officer_sig),
694 : sig_str,
695 : sizeof (sig_str));
696 0 : *end = '\0';
697 :
698 0 : GNUNET_asprintf (&hdr,
699 : "%s: %s",
700 : TALER_AML_OFFICER_SIGNATURE_HEADER,
701 : sig_str);
702 0 : job_headers = curl_slist_append (NULL,
703 : hdr);
704 0 : GNUNET_free (hdr);
705 : }
706 :
707 0 : amh->job = GNUNET_CURL_job_add2 (amh->ctx,
708 : eh,
709 : job_headers,
710 : &handle_get_aml_measures_finished,
711 : amh);
712 0 : curl_slist_free_all (job_headers);
713 :
714 0 : if (NULL == amh->job)
715 : {
716 0 : GNUNET_free (amh->url);
717 0 : amh->url = NULL;
718 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
719 : }
720 0 : return TALER_EC_NONE;
721 : }
722 :
723 :
724 : void
725 0 : TALER_EXCHANGE_get_aml_measures_cancel (
726 : struct TALER_EXCHANGE_GetAmlMeasuresHandle *amh)
727 : {
728 0 : if (NULL != amh->job)
729 : {
730 0 : GNUNET_CURL_job_cancel (amh->job);
731 0 : amh->job = NULL;
732 : }
733 0 : free_scrap (amh);
734 0 : GNUNET_free (amh->url);
735 0 : GNUNET_free (amh->base_url);
736 0 : GNUNET_free (amh);
737 0 : }
738 :
739 :
740 : /* end of exchange_api_get-aml-OFFICER_PUB-measures.c */
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