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 <stdio.h>
  23 #include <string.h>
  24 #include <errno.h>
  25
  26 #include <json-c/json.h>
  27 #include <afb/afb-binding.h>
  28
  29 #include "afb-context.h"
  30 #include "afb-xreq.h"
  31 #include "afb-evt.h"
  32 #include "afb-msg-json.h"
  33 #include "afb-subcall.h"
  34 #include "afb-hook.h"
  35 #include "afb-api.h"
  36 #include "afb-apiset.h"
  37 #include "afb-auth.h"
  38 #include "jobs.h"
  39 #include "verbose.h"
  40
  41 /******************************************************************************/
  42
  43 static void vinfo(void *first, void *second, const char *fmt, va_list args, void (*fun)(void*,void*,const char*))
  44 {
  45         char *info;
  46         if (fmt == NULL || vasprintf(&info, fmt, args) < 0)
  47                 info = NULL;
  48         fun(first, second, info);
  49         free(info);
  50 }
  51
  52 /******************************************************************************/
  53
  54 static struct json_object *xreq_json_cb(void *closure)
  55 {
  56         struct afb_xreq *xreq = closure;
  57         return xreq->json ? : (xreq->json = xreq->queryitf->json(xreq));
  58 }
  59
  60 static struct afb_arg xreq_get_cb(void *closure, const char *name)
  61 {
  62         struct afb_xreq *xreq = closure;
  63         if (xreq->queryitf->get)
  64                 return xreq->queryitf->get(xreq, name);
  65         else
  66                 return afb_msg_json_get_arg(xreq_json_cb(closure), name);
  67 }
  68
  69 static void xreq_success_cb(void *closure, struct json_object *obj, const char *info)
  70 {
  71         struct afb_xreq *xreq = closure;
  72
  73         if (xreq->replied) {
  74                 ERROR("reply called more than one time!!");
  75                 json_object_put(obj);
  76         } else {
  77                 xreq->replied = 1;
  78                 if (xreq->queryitf->success)
  79                         xreq->queryitf->success(xreq, obj, info);
  80                 else
  81                         xreq->queryitf->reply(xreq, 0, afb_msg_json_reply_ok(info, obj, &xreq->context, NULL));
  82         }
  83 }
  84
  85 static void xreq_fail_cb(void *closure, const char *status, const char *info)
  86 {
  87         struct afb_xreq *xreq = closure;
  88
  89         if (xreq->replied) {
  90                 ERROR("reply called more than one time!!");
  91         } else {
  92                 xreq->replied = 1;
  93                 if (xreq->queryitf->fail)
  94                         xreq->queryitf->fail(xreq, status, info);
  95                 else
  96                         xreq->queryitf->reply(xreq, 1, afb_msg_json_reply_error(status, info, &xreq->context, NULL));
  97         }
  98 }
  99
 100 static void xreq_vsuccess_cb(void *closure, struct json_object *obj, const char *fmt, va_list args)
 101 {
 102         vinfo(closure, obj, fmt, args, (void*)xreq_success_cb);
 103 }
 104
 105 static void xreq_vfail_cb(void *closure, const char *status, const char *fmt, va_list args)
 106 {
 107         vinfo(closure, (void*)status, fmt, args, (void*)xreq_fail_cb);
 108 }
 109
 110 static void *xreq_context_get_cb(void *closure)
 111 {
 112         struct afb_xreq *xreq = closure;
 113         return afb_context_get(&xreq->context);
 114 }
 115
 116 static void xreq_context_set_cb(void *closure, void *value, void (*free_value)(void*))
 117 {
 118         struct afb_xreq *xreq = closure;
 119         afb_context_set(&xreq->context, value, free_value);
 120 }
 121
 122 static void xreq_addref_cb(void *closure)
 123 {
 124         struct afb_xreq *xreq = closure;
 125         __atomic_add_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED);
 126 }
 127
 128 static void xreq_unref_cb(void *closure)
 129 {
 130         struct afb_xreq *xreq = closure;
 131         if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
 132                 xreq->queryitf->unref(xreq);
 133         }
 134 }
 135
 136 static void xreq_session_close_cb(void *closure)
 137 {
 138         struct afb_xreq *xreq = closure;
 139         afb_context_close(&xreq->context);
 140 }
 141
 142 static int xreq_session_set_LOA_cb(void *closure, unsigned level)
 143 {
 144         struct afb_xreq *xreq = closure;
 145         return afb_context_change_loa(&xreq->context, level);
 146 }
 147
 148 static int xreq_subscribe_cb(void *closure, struct afb_event event)
 149 {
 150         struct afb_xreq *xreq = closure;
 151         return afb_xreq_subscribe(xreq, event);
 152 }
 153
 154 int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_event event)
 155 {
 156         if (xreq->listener)
 157                 return afb_evt_add_watch(xreq->listener, event);
 158         if (xreq->queryitf->subscribe)
 159                 return xreq->queryitf->subscribe(xreq, event);
 160         ERROR("no event listener, subscription impossible");
 161         errno = EINVAL;
 162         return -1;
 163 }
 164
 165 static int xreq_unsubscribe_cb(void *closure, struct afb_event event)
 166 {
 167         struct afb_xreq *xreq = closure;
 168         return afb_xreq_unsubscribe(xreq, event);
 169 }
 170
 171 int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
 172 {
 173         if (xreq->listener)
 174                 return afb_evt_remove_watch(xreq->listener, event);
 175         if (xreq->queryitf->unsubscribe)
 176                 return xreq->queryitf->unsubscribe(xreq, event);
 177         ERROR("no event listener, unsubscription impossible");
 178         errno = EINVAL;
 179         return -1;
 180 }
 181
 182 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)
 183 {
 184         struct afb_xreq *xreq = closure;
 185
 186         if (xreq->queryitf->subcall) {
 187                 xreq->queryitf->subcall(xreq, api, verb, args, callback, cb_closure);
 188                 json_object_put(args);
 189         } else {
 190                 afb_subcall(xreq, api, verb, args, callback, cb_closure);
 191         }
 192 }
 193
 194 struct xreq_sync
 195 {
 196         struct afb_xreq *caller;
 197         const char *api;
 198         const char *verb;
 199         struct json_object *args;
 200         struct jobloop *jobloop;
 201         struct json_object *result;
 202         int iserror;
 203 };
 204
 205 static void xreq_sync_leave(struct xreq_sync *sync)
 206 {
 207         struct jobloop *jobloop = sync->jobloop;
 208         if (jobloop) {
 209                 sync->jobloop = NULL;
 210                 jobs_leave(jobloop);
 211         }
 212 }
 213
 214 static void xreq_sync_reply(void *closure, int iserror, struct json_object *obj)
 215 {
 216         struct xreq_sync *sync = closure;
 217
 218         sync->iserror = iserror;
 219         sync->result = json_object_get(obj);
 220         xreq_sync_leave(sync);
 221 }
 222
 223 static void xreq_sync_enter(int signum, void *closure, struct jobloop *jobloop)
 224 {
 225         struct xreq_sync *sync = closure;
 226
 227         if (!signum) {
 228                 sync->jobloop = jobloop;
 229                 xreq_subcall_cb(sync->caller, sync->api, sync->verb, json_object_get(sync->args), xreq_sync_reply, sync);
 230         } else {
 231                 sync->iserror = 1;
 232                 xreq_sync_leave(sync);
 233         }
 234 }
 235
 236 static int xreq_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 237 {
 238         int rc;
 239         struct xreq_sync sync;
 240         struct afb_xreq *xreq = closure;
 241
 242         sync.caller = xreq;
 243         sync.api = api;
 244         sync.verb = verb;
 245         sync.args = args;
 246         sync.jobloop = NULL;
 247         sync.result = NULL;
 248         sync.iserror = 1;
 249
 250         rc = jobs_enter(NULL, 0, xreq_sync_enter, &sync);
 251         json_object_put(args);
 252         if (rc < 0 || sync.iserror) {
 253                 *result = sync.result ? : afb_msg_json_internal_error();
 254                 return 0;
 255         }
 256         *result = sync.result;
 257         return 1;
 258 }
 259
 260 /******************************************************************************/
 261
 262 static struct json_object *xreq_hooked_json_cb(void *closure)
 263 {
 264         struct json_object *r = xreq_json_cb(closure);
 265         struct afb_xreq *xreq = closure;
 266         return afb_hook_xreq_json(xreq, r);
 267 }
 268
 269 static struct afb_arg xreq_hooked_get_cb(void *closure, const char *name)
 270 {
 271         struct afb_arg r = xreq_get_cb(closure, name);
 272         struct afb_xreq *xreq = closure;
 273         return afb_hook_xreq_get(xreq, name, r);
 274 }
 275
 276 static void xreq_hooked_success_cb(void *closure, struct json_object *obj, const char *info)
 277 {
 278         struct afb_xreq *xreq = closure;
 279         afb_hook_xreq_success(xreq, obj, info);
 280         xreq_success_cb(closure, obj, info);
 281 }
 282
 283 static void xreq_hooked_fail_cb(void *closure, const char *status, const char *info)
 284 {
 285         struct afb_xreq *xreq = closure;
 286         afb_hook_xreq_fail(xreq, status, info);
 287         xreq_fail_cb(closure, status, info);
 288 }
 289
 290 static void xreq_hooked_vsuccess_cb(void *closure, struct json_object *obj, const char *fmt, va_list args)
 291 {
 292         vinfo(closure, obj, fmt, args, (void*)xreq_hooked_success_cb);
 293 }
 294
 295 static void xreq_hooked_vfail_cb(void *closure, const char *status, const char *fmt, va_list args)
 296 {
 297         vinfo(closure, (void*)status, fmt, args, (void*)xreq_hooked_fail_cb);
 298 }
 299
 300 static void *xreq_hooked_context_get_cb(void *closure)
 301 {
 302         void *r = xreq_context_get_cb(closure);
 303         struct afb_xreq *xreq = closure;
 304         return afb_hook_xreq_context_get(xreq, r);
 305 }
 306
 307 static void xreq_hooked_context_set_cb(void *closure, void *value, void (*free_value)(void*))
 308 {
 309         struct afb_xreq *xreq = closure;
 310         afb_hook_xreq_context_set(xreq, value, free_value);
 311         xreq_context_set_cb(closure, value, free_value);
 312 }
 313
 314 static void xreq_hooked_addref_cb(void *closure)
 315 {
 316         struct afb_xreq *xreq = closure;
 317         afb_hook_xreq_addref(xreq);
 318         xreq_addref_cb(closure);
 319 }
 320
 321 static void xreq_hooked_unref_cb(void *closure)
 322 {
 323         struct afb_xreq *xreq = closure;
 324         afb_hook_xreq_unref(xreq);
 325         if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
 326                 afb_hook_xreq_end(xreq);
 327                 xreq->queryitf->unref(xreq);
 328         }
 329 }
 330
 331 static void xreq_hooked_session_close_cb(void *closure)
 332 {
 333         struct afb_xreq *xreq = closure;
 334         afb_hook_xreq_session_close(xreq);
 335         xreq_session_close_cb(closure);
 336 }
 337
 338 static int xreq_hooked_session_set_LOA_cb(void *closure, unsigned level)
 339 {
 340         int r = xreq_session_set_LOA_cb(closure, level);
 341         struct afb_xreq *xreq = closure;
 342         return afb_hook_xreq_session_set_LOA(xreq, level, r);
 343 }
 344
 345 static int xreq_hooked_subscribe_cb(void *closure, struct afb_event event)
 346 {
 347         int r = xreq_subscribe_cb(closure, event);
 348         struct afb_xreq *xreq = closure;
 349         return afb_hook_xreq_subscribe(xreq, event, r);
 350 }
 351
 352 static int xreq_hooked_unsubscribe_cb(void *closure, struct afb_event event)
 353 {
 354         int r = xreq_unsubscribe_cb(closure, event);
 355         struct afb_xreq *xreq = closure;
 356         return afb_hook_xreq_unsubscribe(xreq, event, r);
 357 }
 358
 359 struct reply
 360 {
 361         struct afb_xreq *xreq;
 362         void (*callback)(void*, int, struct json_object*);
 363         void *closure;
 364 };
 365
 366 static void xreq_hooked_subcall_reply_cb(void *closure, int iserror, struct json_object *result)
 367 {
 368         struct reply *reply = closure;
 369
 370         afb_hook_xreq_subcall_result(reply->xreq, iserror, result);
 371         reply->callback(reply->closure, iserror, result);
 372         free(reply);
 373 }
 374
 375 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)
 376 {
 377         struct reply *reply = malloc(sizeof *reply);
 378         struct afb_xreq *xreq = closure;
 379         afb_hook_xreq_subcall(xreq, api, verb, args);
 380         if (reply) {
 381                 reply->xreq = xreq;
 382                 reply->callback = callback;
 383                 reply->closure = cb_closure;
 384                 xreq_subcall_cb(closure, api, verb, args, xreq_hooked_subcall_reply_cb, reply);
 385         } else {
 386                 ERROR("out of memory");
 387                 xreq_subcall_cb(closure, api, verb, args, callback, cb_closure);
 388         }
 389 }
 390
 391 static int xreq_hooked_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 392 {
 393         int r;
 394         struct afb_xreq *xreq = closure;
 395         afb_hook_xreq_subcallsync(xreq, api, verb, args);
 396         r = xreq_subcallsync_cb(closure, api, verb, args, result);
 397         return afb_hook_xreq_subcallsync_result(xreq, r, *result);
 398 }
 399
 400 /******************************************************************************/
 401
 402 const struct afb_req_itf xreq_itf = {
 403         .json = xreq_json_cb,
 404         .get = xreq_get_cb,
 405         .success = xreq_success_cb,
 406         .fail = xreq_fail_cb,
 407         .vsuccess = xreq_vsuccess_cb,
 408         .vfail = xreq_vfail_cb,
 409         .context_get = xreq_context_get_cb,
 410         .context_set = xreq_context_set_cb,
 411         .addref = xreq_addref_cb,
 412         .unref = xreq_unref_cb,
 413         .session_close = xreq_session_close_cb,
 414         .session_set_LOA = xreq_session_set_LOA_cb,
 415         .subscribe = xreq_subscribe_cb,
 416         .unsubscribe = xreq_unsubscribe_cb,
 417         .subcall = xreq_subcall_cb,
 418         .subcallsync = xreq_subcallsync_cb
 419 };
 420
 421 const struct afb_req_itf xreq_hooked_itf = {
 422         .json = xreq_hooked_json_cb,
 423         .get = xreq_hooked_get_cb,
 424         .success = xreq_hooked_success_cb,
 425         .fail = xreq_hooked_fail_cb,
 426         .vsuccess = xreq_hooked_vsuccess_cb,
 427         .vfail = xreq_hooked_vfail_cb,
 428         .context_get = xreq_hooked_context_get_cb,
 429         .context_set = xreq_hooked_context_set_cb,
 430         .addref = xreq_hooked_addref_cb,
 431         .unref = xreq_hooked_unref_cb,
 432         .session_close = xreq_hooked_session_close_cb,
 433         .session_set_LOA = xreq_hooked_session_set_LOA_cb,
 434         .subscribe = xreq_hooked_subscribe_cb,
 435         .unsubscribe = xreq_hooked_unsubscribe_cb,
 436         .subcall = xreq_hooked_subcall_cb,
 437         .subcallsync = xreq_hooked_subcallsync_cb
 438 };
 439
 440 static inline struct afb_req to_req(struct afb_xreq *xreq)
 441 {
 442         return (struct afb_req){ .itf = xreq->hookflags ? &xreq_hooked_itf : &xreq_itf, .closure = xreq };
 443 }
 444
 445 /******************************************************************************/
 446
 447 struct json_object *afb_xreq_json(struct afb_xreq *xreq)
 448 {
 449         return afb_req_json(to_req(xreq));
 450 }
 451
 452 void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info)
 453 {
 454         afb_req_success(to_req(xreq), obj, info);
 455 }
 456
 457 void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...)
 458 {
 459         char *message;
 460         va_list args;
 461         va_start(args, info);
 462         if (info == NULL || vasprintf(&message, info, args) < 0)
 463                 message = NULL;
 464         va_end(args);
 465         afb_xreq_success(xreq, obj, message);
 466         free(message);
 467 }
 468
 469 void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info)
 470 {
 471         afb_req_fail(to_req(xreq), status, info);
 472 }
 473
 474 void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...)
 475 {
 476         char *message;
 477         va_list args;
 478         va_start(args, info);
 479         if (info == NULL || vasprintf(&message, info, args) < 0)
 480                 message = NULL;
 481         va_end(args);
 482         afb_xreq_fail(xreq, status, message);
 483         free(message);
 484 }
 485
 486 const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size)
 487 {
 488         struct json_object *obj = xreq_json_cb(xreq);
 489         const char *result = json_object_to_json_string(obj);
 490         if (size != NULL)
 491                 *size = strlen(result);
 492         return result;
 493 }
 494
 495 void afb_xreq_addref(struct afb_xreq *xreq)
 496 {
 497         afb_req_addref(to_req(xreq));
 498 }
 499
 500 void afb_xreq_unref(struct afb_xreq *xreq)
 501 {
 502         afb_req_unref(to_req(xreq));
 503 }
 504
 505 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)
 506 {
 507         xreq_subcall_cb(xreq, api, verb, args, callback, cb_closure);
 508 }
 509
 510 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)
 511 {
 512         afb_req_subcall(to_req(xreq), api, verb, args, callback, cb_closure);
 513 }
 514
 515 int afb_xreq_unhooked_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 516 {
 517         return xreq_subcallsync_cb(xreq, api, verb, args, result);
 518 }
 519
 520 int afb_xreq_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
 521 {
 522         return afb_req_subcall_sync(to_req(xreq), api, verb, args, result);
 523 }
 524
 525 static int xreq_session_check_apply_v1(struct afb_xreq *xreq, int sessionflags)
 526 {
 527         int loa;
 528
 529         if ((sessionflags & (AFB_SESSION_CLOSE_V1|AFB_SESSION_RENEW_V1|AFB_SESSION_CHECK_V1|AFB_SESSION_LOA_EQ_V1)) != 0) {
 530                 if (!afb_context_check(&xreq->context)) {
 531                         afb_context_close(&xreq->context);
 532                         afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
 533                         errno = EINVAL;
 534                         return -1;
 535                 }
 536         }
 537
 538         if ((sessionflags & AFB_SESSION_LOA_GE_V1) != 0) {
 539                 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
 540                 if (!afb_context_check_loa(&xreq->context, loa)) {
 541                         afb_xreq_fail_f(xreq, "denied", "invalid LOA");
 542                         errno = EPERM;
 543                         return -1;
 544                 }
 545         }
 546
 547         if ((sessionflags & AFB_SESSION_LOA_LE_V1) != 0) {
 548                 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
 549                 if (afb_context_check_loa(&xreq->context, loa + 1)) {
 550                         afb_xreq_fail_f(xreq, "denied", "invalid LOA");
 551                         errno = EPERM;
 552                         return -1;
 553                 }
 554         }
 555
 556         if ((sessionflags & AFB_SESSION_RENEW_V1) != 0) {
 557                 afb_context_refresh(&xreq->context);
 558         }
 559         if ((sessionflags & AFB_SESSION_CLOSE_V1) != 0) {
 560                 afb_context_change_loa(&xreq->context, 0);
 561                 afb_context_close(&xreq->context);
 562         }
 563
 564         return 0;
 565 }
 566
 567 static int xreq_session_check_apply_v2(struct afb_xreq *xreq, uint32_t sessionflags, const struct afb_auth *auth)
 568 {
 569         int loa;
 570
 571         if (sessionflags != 0) {
 572                 if (!afb_context_check(&xreq->context)) {
 573                         afb_context_close(&xreq->context);
 574                         afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
 575                         errno = EINVAL;
 576                         return -1;
 577                 }
 578         }
 579
 580         loa = (int)(sessionflags & AFB_SESSION_LOA_MASK_V2);
 581         if (loa && !afb_context_check_loa(&xreq->context, loa)) {
 582                 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
 583                 errno = EPERM;
 584                 return -1;
 585         }
 586
 587         if (auth && !afb_auth_check(auth, xreq)) {
 588                 afb_xreq_fail_f(xreq, "denied", "authorisation refused");
 589                 errno = EPERM;
 590                 return -1;
 591         }
 592
 593         if ((sessionflags & AFB_SESSION_REFRESH_V2) != 0) {
 594                 afb_context_refresh(&xreq->context);
 595         }
 596         if ((sessionflags & AFB_SESSION_CLOSE_V2) != 0) {
 597                 afb_context_close(&xreq->context);
 598         }
 599
 600         return 0;
 601 }
 602
 603 void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb)
 604 {
 605         if (!verb)
 606                 afb_xreq_fail_unknown_verb(xreq);
 607         else
 608                 if (!xreq_session_check_apply_v1(xreq, verb->session))
 609                         verb->callback(to_req(xreq));
 610 }
 611
 612 void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb)
 613 {
 614         if (!verb)
 615                 afb_xreq_fail_unknown_verb(xreq);
 616         else
 617                 if (!xreq_session_check_apply_v2(xreq, verb->session, verb->auth))
 618                         verb->callback(to_req(xreq));
 619 }
 620
 621 void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf)
 622 {
 623         memset(xreq, 0, sizeof *xreq);
 624         xreq->refcount = 1;
 625         xreq->queryitf = queryitf;
 626 }
 627
 628 void afb_xreq_fail_unknown_api(struct afb_xreq *xreq)
 629 {
 630         afb_xreq_fail_f(xreq, "unknown-api", "api %s not found (for verb %s)", xreq->api, xreq->verb);
 631 }
 632
 633 void afb_xreq_fail_unknown_verb(struct afb_xreq *xreq)
 634 {
 635         afb_xreq_fail_f(xreq, "unknown-verb", "verb %s unknown within api %s", xreq->verb, xreq->api);
 636 }
 637
 638 static void process_sync(struct afb_xreq *xreq)
 639 {
 640         struct afb_api api;
 641
 642         /* init hooking */
 643         afb_hook_init_xreq(xreq);
 644         if (xreq->hookflags)
 645                 afb_hook_xreq_begin(xreq);
 646
 647         /* search the api */
 648         if (afb_apiset_get(xreq->apiset, xreq->api, &api) < 0) {
 649                 afb_xreq_fail_f(xreq, "unknown-api", "api %s not found", xreq->api);
 650         } else {
 651                 xreq->context.api_key = api.closure;
 652                 api.itf->call(api.closure, xreq);
 653         }
 654 }
 655
 656 static void process_async(int signum, void *arg)
 657 {
 658         struct afb_xreq *xreq = arg;
 659
 660         if (signum != 0) {
 661                 afb_xreq_fail_f(xreq, "aborted", "signal %s(%d) caught", strsignal(signum), signum);
 662         } else {
 663                 process_sync(xreq);
 664         }
 665         afb_xreq_unref(xreq);
 666 }
 667
 668 void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset)
 669 {
 670         xreq->apiset = apiset;
 671
 672         afb_xreq_addref(xreq);
 673         if (jobs_queue(NULL, afb_apiset_timeout_get(apiset), process_async, xreq) < 0) {
 674                 /* TODO: allows or not to proccess it directly as when no threading? (see above) */
 675                 ERROR("can't process job with threads: %m");
 676                 afb_xreq_fail_f(xreq, "cancelled", "not able to create a job for the task");
 677                 afb_xreq_unref(xreq);
 678         }
 679         afb_xreq_unref(xreq);
 680 }
 681