src/afb-xreq.c

   1 /*
   2  * Copyright (C) 2017 "IoT.bzh"
   3  * Author José Bollo <jose.bollo@iot.bzh>
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *   http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #define _GNU_SOURCE
  19 #define AFB_BINDING_PRAGMA_NO_VERBOSE_MACRO
  20
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <errno.h>
  24
  25 #include <json-c/json.h>
  26 #include <afb/afb-binding.h>
  27
  28 #include "afb-context.h"
  29 #include "afb-xreq.h"
  30 #include "afb-evt.h"
  31 #include "afb-msg-json.h"
  32 #include "afb-subcall.h"
  33 #include "afb-hook.h"
  34 #include "afb-api.h"
  35 #include "afb-apiset.h"
  36 #include "afb-auth.h"
  37 #include "jobs.h"
  38 #include "verbose.h"
  39
  40 /******************************************************************************/
  41
  42 static struct json_object *xreq_json_cb(void *closure)
  43 {
  44         struct afb_xreq *xreq = closure;
  45         return xreq->json ? : (xreq->json = xreq->queryitf->json(xreq));
  46 }
  47
  48 static struct afb_arg xreq_get_cb(void *closure, const char *name)
  49 {
  50         struct afb_xreq *xreq = closure;
  51         if (xreq->queryitf->get)
  52                 return xreq->queryitf->get(xreq, name);
  53         else
  54                 return afb_msg_json_get_arg(xreq_json_cb(closure), name);
  55 }
  56
  57 static void xreq_success_cb(void *closure, struct json_object *obj, const char *info)
  58 {
  59         struct afb_xreq *xreq = closure;
  60
  61         if (xreq->replied) {
  62                 ERROR("reply called more than one time!!");
  63                 json_object_put(obj);
  64         } else {
  65                 xreq->replied = 1;
  66                 if (xreq->queryitf->success)
  67                         xreq->queryitf->success(xreq, obj, info);
  68                 else
  69                         xreq->queryitf->reply(xreq, 0, afb_msg_json_reply_ok(info, obj, &xreq->context, NULL));
  70         }
  71 }
  72
  73 static void xreq_fail_cb(void *closure, const char *status, const char *info)
  74 {
  75         struct afb_xreq *xreq = closure;
  76
  77         if (xreq->replied) {
  78                 ERROR("reply called more than one time!!");
  79         } else {
  80                 xreq->replied = 1;
  81                 if (xreq->queryitf->fail)
  82                         xreq->queryitf->fail(xreq, status, info);
  83                 else
  84                         xreq->queryitf->reply(xreq, 1, afb_msg_json_reply_error(status, info, &xreq->context, NULL));
  85         }
  86 }
  87
  88 static const char *xreq_raw_cb(void *closure, size_t *size)
  89 {
  90         struct afb_xreq *xreq = closure;
  91         const char *result = json_object_to_json_string(xreq_json_cb(xreq));
  92         if (size != NULL)
  93                 *size = strlen(result);
  94         return result;
  95 }
  96
  97 static void xreq_send_cb(void *closure, const char *buffer, size_t size)
  98 {
  99         struct json_object *obj = json_tokener_parse(buffer);
 100         if (!obj == !buffer)
 101                 xreq_success_cb(closure, obj, "fake send");
 102         else
 103                 xreq_fail_cb(closure, "fake-send-failed", "fake send");
 104 }
 105
 106 static void *xreq_context_get_cb(void *closure)
 107 {
 108         struct afb_xreq *xreq = closure;
 109         return afb_context_get(&xreq->context);
 110 }
 111
 112 static void xreq_context_set_cb(void *closure, void *value, void (*free_value)(void*))
 113 {
 114         struct afb_xreq *xreq = closure;
 115         afb_context_set(&xreq->context, value, free_value);
 116 }
 117
 118 static void xreq_addref_cb(void *closure)
 119 {
 120         struct afb_xreq *xreq = closure;
 121         __atomic_add_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED);
 122 }
 123
 124 static void xreq_unref_cb(void *closure)
 125 {
 126         struct afb_xreq *xreq = closure;
 127         if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
 128                 xreq->queryitf->unref(xreq);
 129         }
 130 }
 131
 132 static void xreq_session_close_cb(void *closure)
 133 {
 134         struct afb_xreq *xreq = closure;
 135         afb_context_close(&xreq->context);
 136 }
 137
 138 static int xreq_session_set_LOA_cb(void *closure, unsigned level)
 139 {
 140         struct afb_xreq *xreq = closure;
 141         return afb_context_change_loa(&xreq->context, level);
 142 }
 143
 144 static int xreq_subscribe_cb(void *closure, struct afb_event event)
 145 {
 146         struct afb_xreq *xreq = closure;
 147         return afb_xreq_subscribe(xreq, event);
 148 }
 149
 150 int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_event event)
 151 {
 152         if (xreq->listener)
 153                 return afb_evt_add_watch(xreq->listener, event);
 154         if (xreq->queryitf->subscribe)
 155                 return xreq->queryitf->subscribe(xreq, event);
 156         ERROR("no event listener, subscription impossible");
 157         errno = EINVAL;
 158         return -1;
 159 }
 160
 161 static int xreq_unsubscribe_cb(void *closure, struct afb_event event)
 162 {
 163         struct afb_xreq *xreq = closure;
 164         return afb_xreq_unsubscribe(xreq, event);
 165 }
 166
 167 int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
 168 {
 169         if (xreq->listener)
 170                 return afb_evt_remove_watch(xreq->listener, event);
 171         if (xreq->queryitf->unsubscribe)
 172                 return xreq->queryitf->unsubscribe(xreq, event);
 173         ERROR("no event listener, unsubscription impossible");
 174         errno = EINVAL;
 175         return -1;
 176 }
 177
 178 static void xreq_subcall_cb(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
 179 {
 180         struct afb_xreq *xreq = closure;
 181
 182         if (xreq->queryitf->subcall) {
 183                 xreq->queryitf->subcall(xreq, api, verb, args, callback, cb_closure);
 184                 json_object_put(args);
 185         } else {
 186                 afb_subcall(xreq, api, verb, args, callback, cb_closure);
 187         }
 188 }
 189
 190 struct xreq_sync
 191 {
 192         struct afb_xreq *caller;
 193         const char *api;
 194         const char *verb;
 195         struct json_object *args;
 196         struct jobloop *jobloop;
 197         struct json_object *result;
 198         int iserror;
 199 };
 200
 201 static void xreq_sync_leave(struct xreq_sync *sync)
 202 {
 203         struct jobloop *jobloop = sync->jobloop;
 204         if (jobloop) {
 205                 sync->jobloop = NULL;
 206                 jobs_leave(jobloop);
 207         }
 208 }
 209
 210 static void xreq_sync_reply(void *closure, int iserror, struct json_object *obj)
 211 {
 212         struct xreq_sync *sync = closure;
 213
 214         sync->iserror = iserror;
 215         sync->result = json_object_get(obj);
 216         xreq_sync_leave(sync);
 217 }
 218
 219 static void xreq_sync_enter(int signum, void *closure, struct jobloop *jobloop)
 220 {
 221         struct xreq_sync *sync = closure;
 222
 223         if (!signum) {
 224                 sync->jobloop = jobloop;
 225                 xreq_subcall_cb(sync->caller, sync->api, sync->verb, json_object_get(sync->args), xreq_sync_reply, sync);
 226         } else {
 227                 sync->iserror = 1;
 228                 xreq_sync_leave(sync);
 229         }
 230 }
 231
 232 static int xreq_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 233 {
 234         int rc;
 235         struct xreq_sync sync;
 236         struct afb_xreq *xreq = closure;
 237
 238         sync.caller = xreq;
 239         sync.api = api;
 240         sync.verb = verb;
 241         sync.args = args;
 242         sync.jobloop = NULL;
 243         sync.result = NULL;
 244         sync.iserror = 1;
 245
 246         rc = jobs_enter(NULL, 0, xreq_sync_enter, &sync);
 247         json_object_put(args);
 248         if (rc < 0 || sync.iserror) {
 249                 *result = sync.result ? : afb_msg_json_internal_error();
 250                 return 0;
 251         }
 252         *result = sync.result;
 253         return 1;
 254 }
 255
 256 /******************************************************************************/
 257
 258 static struct json_object *xreq_hooked_json_cb(void *closure)
 259 {
 260         struct json_object *r = xreq_json_cb(closure);
 261         struct afb_xreq *xreq = closure;
 262         return afb_hook_xreq_json(xreq, r);
 263 }
 264
 265 static struct afb_arg xreq_hooked_get_cb(void *closure, const char *name)
 266 {
 267         struct afb_arg r = xreq_get_cb(closure, name);
 268         struct afb_xreq *xreq = closure;
 269         return afb_hook_xreq_get(xreq, name, r);
 270 }
 271
 272 static void xreq_hooked_success_cb(void *closure, struct json_object *obj, const char *info)
 273 {
 274         struct afb_xreq *xreq = closure;
 275         afb_hook_xreq_success(xreq, obj, info);
 276         xreq_success_cb(closure, obj, info);
 277 }
 278
 279 static void xreq_hooked_fail_cb(void *closure, const char *status, const char *info)
 280 {
 281         struct afb_xreq *xreq = closure;
 282         afb_hook_xreq_fail(xreq, status, info);
 283         xreq_fail_cb(closure, status, info);
 284 }
 285
 286 static const char *xreq_hooked_raw_cb(void *closure, size_t *size)
 287 {
 288         size_t s;
 289         const char *r = xreq_raw_cb(closure, size ? : &s);
 290         struct afb_xreq *xreq = closure;
 291         return afb_hook_xreq_raw(xreq, r, *(size ? : &s));
 292 }
 293
 294 static void xreq_hooked_send_cb(void *closure, const char *buffer, size_t size)
 295 {
 296         struct afb_xreq *xreq = closure;
 297         afb_hook_xreq_send(xreq, buffer, size);
 298         xreq_send_cb(closure, buffer, size);
 299 }
 300
 301 static void *xreq_hooked_context_get_cb(void *closure)
 302 {
 303         void *r = xreq_context_get_cb(closure);
 304         struct afb_xreq *xreq = closure;
 305         return afb_hook_xreq_context_get(xreq, r);
 306 }
 307
 308 static void xreq_hooked_context_set_cb(void *closure, void *value, void (*free_value)(void*))
 309 {
 310         struct afb_xreq *xreq = closure;
 311         afb_hook_xreq_context_set(xreq, value, free_value);
 312         xreq_context_set_cb(closure, value, free_value);
 313 }
 314
 315 static void xreq_hooked_addref_cb(void *closure)
 316 {
 317         struct afb_xreq *xreq = closure;
 318         afb_hook_xreq_addref(xreq);
 319         xreq_addref_cb(closure);
 320 }
 321
 322 static void xreq_hooked_unref_cb(void *closure)
 323 {
 324         struct afb_xreq *xreq = closure;
 325         afb_hook_xreq_unref(xreq);
 326         if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
 327                 afb_hook_xreq_end(xreq);
 328                 xreq->queryitf->unref(xreq);
 329         }
 330 }
 331
 332 static void xreq_hooked_session_close_cb(void *closure)
 333 {
 334         struct afb_xreq *xreq = closure;
 335         afb_hook_xreq_session_close(xreq);
 336         xreq_session_close_cb(closure);
 337 }
 338
 339 static int xreq_hooked_session_set_LOA_cb(void *closure, unsigned level)
 340 {
 341         int r = xreq_session_set_LOA_cb(closure, level);
 342         struct afb_xreq *xreq = closure;
 343         return afb_hook_xreq_session_set_LOA(xreq, level, r);
 344 }
 345
 346 static int xreq_hooked_subscribe_cb(void *closure, struct afb_event event)
 347 {
 348         int r = xreq_subscribe_cb(closure, event);
 349         struct afb_xreq *xreq = closure;
 350         return afb_hook_xreq_subscribe(xreq, event, r);
 351 }
 352
 353 static int xreq_hooked_unsubscribe_cb(void *closure, struct afb_event event)
 354 {
 355         int r = xreq_unsubscribe_cb(closure, event);
 356         struct afb_xreq *xreq = closure;
 357         return afb_hook_xreq_unsubscribe(xreq, event, r);
 358 }
 359
 360 struct reply
 361 {
 362         struct afb_xreq *xreq;
 363         void (*callback)(void*, int, struct json_object*);
 364         void *closure;
 365 };
 366
 367 static void xreq_hooked_subcall_reply_cb(void *closure, int iserror, struct json_object *result)
 368 {
 369         struct reply *reply = closure;
 370
 371         afb_hook_xreq_subcall_result(reply->xreq, iserror, result);
 372         reply->callback(reply->closure, iserror, result);
 373         free(reply);
 374 }
 375
 376 static void xreq_hooked_subcall_cb(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
 377 {
 378         struct reply *reply = malloc(sizeof *reply);
 379         struct afb_xreq *xreq = closure;
 380         afb_hook_xreq_subcall(xreq, api, verb, args);
 381         if (reply) {
 382                 reply->xreq = xreq;
 383                 reply->callback = callback;
 384                 reply->closure = cb_closure;
 385                 xreq_subcall_cb(closure, api, verb, args, xreq_hooked_subcall_reply_cb, reply);
 386         } else {
 387                 ERROR("out of memory");
 388                 xreq_subcall_cb(closure, api, verb, args, callback, cb_closure);
 389         }
 390 }
 391
 392 static int xreq_hooked_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 393 {
 394         int r;
 395         struct afb_xreq *xreq = closure;
 396         afb_hook_xreq_subcallsync(xreq, api, verb, args);
 397         r = xreq_subcallsync_cb(closure, api, verb, args, result);
 398         return afb_hook_xreq_subcallsync_result(xreq, r, *result);
 399 }
 400
 401 /******************************************************************************/
 402
 403 const struct afb_req_itf xreq_itf = {
 404         .json = xreq_json_cb,
 405         .get = xreq_get_cb,
 406         .success = xreq_success_cb,
 407         .fail = xreq_fail_cb,
 408         .raw = xreq_raw_cb,
 409         .send = xreq_send_cb,
 410         .context_get = xreq_context_get_cb,
 411         .context_set = xreq_context_set_cb,
 412         .addref = xreq_addref_cb,
 413         .unref = xreq_unref_cb,
 414         .session_close = xreq_session_close_cb,
 415         .session_set_LOA = xreq_session_set_LOA_cb,
 416         .subscribe = xreq_subscribe_cb,
 417         .unsubscribe = xreq_unsubscribe_cb,
 418         .subcall = xreq_subcall_cb,
 419         .subcallsync = xreq_subcallsync_cb
 420 };
 421
 422 const struct afb_req_itf xreq_hooked_itf = {
 423         .json = xreq_hooked_json_cb,
 424         .get = xreq_hooked_get_cb,
 425         .success = xreq_hooked_success_cb,
 426         .fail = xreq_hooked_fail_cb,
 427         .raw = xreq_hooked_raw_cb,
 428         .send = xreq_hooked_send_cb,
 429         .context_get = xreq_hooked_context_get_cb,
 430         .context_set = xreq_hooked_context_set_cb,
 431         .addref = xreq_hooked_addref_cb,
 432         .unref = xreq_hooked_unref_cb,
 433         .session_close = xreq_hooked_session_close_cb,
 434         .session_set_LOA = xreq_hooked_session_set_LOA_cb,
 435         .subscribe = xreq_hooked_subscribe_cb,
 436         .unsubscribe = xreq_hooked_unsubscribe_cb,
 437         .subcall = xreq_hooked_subcall_cb,
 438         .subcallsync = xreq_hooked_subcallsync_cb
 439 };
 440
 441 static inline struct afb_req to_req(struct afb_xreq *xreq)
 442 {
 443         return (struct afb_req){ .itf = xreq->hookflags ? &xreq_hooked_itf : &xreq_itf, .closure = xreq };
 444 }
 445
 446 /******************************************************************************/
 447
 448 struct json_object *afb_xreq_json(struct afb_xreq *xreq)
 449 {
 450         return afb_req_json(to_req(xreq));
 451 }
 452
 453 void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info)
 454 {
 455         afb_req_success(to_req(xreq), obj, info);
 456 }
 457
 458 void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...)
 459 {
 460         char *message;
 461         va_list args;
 462         va_start(args, info);
 463         if (info == NULL || vasprintf(&message, info, args) < 0)
 464                 message = NULL;
 465         va_end(args);
 466         afb_xreq_success(xreq, obj, message);
 467         free(message);
 468 }
 469
 470 void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info)
 471 {
 472         afb_req_fail(to_req(xreq), status, info);
 473 }
 474
 475 void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...)
 476 {
 477         char *message;
 478         va_list args;
 479         va_start(args, info);
 480         if (info == NULL || vasprintf(&message, info, args) < 0)
 481                 message = NULL;
 482         va_end(args);
 483         afb_xreq_fail(xreq, status, message);
 484         free(message);
 485 }
 486
 487 const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size)
 488 {
 489         return afb_req_raw(to_req(xreq), size);
 490 }
 491
 492 void afb_xreq_addref(struct afb_xreq *xreq)
 493 {
 494         afb_req_addref(to_req(xreq));
 495 }
 496
 497 void afb_xreq_unref(struct afb_xreq *xreq)
 498 {
 499         afb_req_unref(to_req(xreq));
 500 }
 501
 502 void afb_xreq_unhooked_subcall(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
 503 {
 504         xreq_subcall_cb(xreq, api, verb, args, callback, cb_closure);
 505 }
 506
 507 void afb_xreq_subcall(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
 508 {
 509         afb_req_subcall(to_req(xreq), api, verb, args, callback, cb_closure);
 510 }
 511
 512 int afb_xreq_unhooked_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 513 {
 514         return xreq_subcallsync_cb(xreq, api, verb, args, result);
 515 }
 516
 517 int afb_xreq_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 518 {
 519         return afb_req_subcall_sync(to_req(xreq), api, verb, args, result);
 520 }
 521
 522 static int xreq_session_check_apply_v1(struct afb_xreq *xreq, int sessionflags)
 523 {
 524         int loa;
 525
 526         if ((sessionflags & (AFB_SESSION_CLOSE_V1|AFB_SESSION_RENEW_V1|AFB_SESSION_CHECK_V1|AFB_SESSION_LOA_EQ_V1)) != 0) {
 527                 if (!afb_context_check(&xreq->context)) {
 528                         afb_context_close(&xreq->context);
 529                         afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
 530                         errno = EINVAL;
 531                         return -1;
 532                 }
 533         }
 534
 535         if ((sessionflags & AFB_SESSION_LOA_GE_V1) != 0) {
 536                 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
 537                 if (!afb_context_check_loa(&xreq->context, loa)) {
 538                         afb_xreq_fail_f(xreq, "denied", "invalid LOA");
 539                         errno = EPERM;
 540                         return -1;
 541                 }
 542         }
 543
 544         if ((sessionflags & AFB_SESSION_LOA_LE_V1) != 0) {
 545                 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
 546                 if (afb_context_check_loa(&xreq->context, loa + 1)) {
 547                         afb_xreq_fail_f(xreq, "denied", "invalid LOA");
 548                         errno = EPERM;
 549                         return -1;
 550                 }
 551         }
 552
 553         if ((sessionflags & AFB_SESSION_RENEW_V1) != 0) {
 554                 afb_context_refresh(&xreq->context);
 555         }
 556         if ((sessionflags & AFB_SESSION_CLOSE_V1) != 0) {
 557                 afb_context_change_loa(&xreq->context, 0);
 558                 afb_context_close(&xreq->context);
 559         }
 560
 561         return 0;
 562 }
 563
 564 static int xreq_session_check_apply_v2(struct afb_xreq *xreq, uint32_t sessionflags, const struct afb_auth *auth)
 565 {
 566         int loa;
 567
 568         if (sessionflags != 0) {
 569                 if (!afb_context_check(&xreq->context)) {
 570                         afb_context_close(&xreq->context);
 571                         afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
 572                         errno = EINVAL;
 573                         return -1;
 574                 }
 575         }
 576
 577         loa = (int)(sessionflags & AFB_SESSION_LOA_MASK_V2);
 578         if (loa && !afb_context_check_loa(&xreq->context, loa)) {
 579                 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
 580                 errno = EPERM;
 581                 return -1;
 582         }
 583
 584         if (auth && !afb_auth_check(auth, xreq)) {
 585                 afb_xreq_fail_f(xreq, "denied", "authorisation refused");
 586                 errno = EPERM;
 587                 return -1;
 588         }
 589
 590         if ((sessionflags & AFB_SESSION_REFRESH_V2) != 0) {
 591                 afb_context_refresh(&xreq->context);
 592         }
 593         if ((sessionflags & AFB_SESSION_CLOSE_V2) != 0) {
 594                 afb_context_close(&xreq->context);
 595         }
 596
 597         return 0;
 598 }
 599
 600 void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb)
 601 {
 602         if (!verb)
 603                 afb_xreq_fail_unknown_verb(xreq);
 604         else
 605                 if (!xreq_session_check_apply_v1(xreq, verb->session))
 606                         verb->callback(to_req(xreq));
 607 }
 608
 609 void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb)
 610 {
 611         if (!verb)
 612                 afb_xreq_fail_unknown_verb(xreq);
 613         else
 614                 if (!xreq_session_check_apply_v2(xreq, verb->session, verb->auth))
 615                         verb->callback(to_req(xreq));
 616 }
 617
 618 void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf)
 619 {
 620         memset(xreq, 0, sizeof *xreq);
 621         xreq->refcount = 1;
 622         xreq->queryitf = queryitf;
 623 }
 624
 625 void afb_xreq_fail_unknown_api(struct afb_xreq *xreq)
 626 {
 627         afb_xreq_fail_f(xreq, "unknown-api", "api %s not found (for verb %s)", xreq->api, xreq->verb);
 628 }
 629
 630 void afb_xreq_fail_unknown_verb(struct afb_xreq *xreq)
 631 {
 632         afb_xreq_fail_f(xreq, "unknown-verb", "verb %s unknown within api %s", xreq->verb, xreq->api);
 633 }
 634
 635 static void process_sync(struct afb_xreq *xreq)
 636 {
 637         struct afb_api api;
 638
 639         /* init hooking */
 640         afb_hook_init_xreq(xreq);
 641         if (xreq->hookflags)
 642                 afb_hook_xreq_begin(xreq);
 643
 644         /* search the api */
 645         if (afb_apiset_get(xreq->apiset, xreq->api, &api) < 0) {
 646                 afb_xreq_fail_f(xreq, "unknown-api", "api %s not found", xreq->api);
 647         } else {
 648                 xreq->context.api_key = api.closure;
 649                 api.itf->call(api.closure, xreq);
 650         }
 651 }
 652
 653 static void process_async(int signum, void *arg)
 654 {
 655         struct afb_xreq *xreq = arg;
 656
 657         if (signum != 0) {
 658                 afb_xreq_fail_f(xreq, "aborted", "signal %s(%d) caught", strsignal(signum), signum);
 659         } else {
 660                 process_sync(xreq);
 661         }
 662         afb_xreq_unref(xreq);
 663 }
 664
 665 void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset)
 666 {
 667         xreq->apiset = apiset;
 668
 669         afb_xreq_addref(xreq);
 670         if (jobs_queue(NULL, afb_apiset_timeout_get(apiset), process_async, xreq) < 0) {
 671                 /* TODO: allows or not to proccess it directly as when no threading? (see above) */
 672                 ERROR("can't process job with threads: %m");
 673                 afb_xreq_fail_f(xreq, "cancelled", "not able to create a job for the task");
 674                 afb_xreq_unref(xreq);
 675         }
 676         afb_xreq_unref(xreq);
 677 }
 678