diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/CMakeLists.txt | 49 | ||||
| -rw-r--r-- | src/agl-forgerock.c | 209 | ||||
| -rw-r--r-- | src/agl-forgerock.h | 24 | ||||
| -rw-r--r-- | src/agl-identity-binding.c | 333 | ||||
| -rw-r--r-- | src/aia-get.c | 245 | ||||
| -rw-r--r-- | src/aia-get.h | 28 | ||||
| -rw-r--r-- | src/authorization.c | 43 | ||||
| -rw-r--r-- | src/authorization.h | 23 | ||||
| -rw-r--r-- | src/base64.c | 108 | ||||
| -rw-r--r-- | src/base64.h | 51 | ||||
| -rw-r--r-- | src/curl-wrap.c | 210 | ||||
| -rw-r--r-- | src/curl-wrap.h | 45 | ||||
| -rw-r--r-- | src/escape.c | 428 | ||||
| -rw-r--r-- | src/escape.h | 23 | ||||
| -rw-r--r-- | src/export.map | 1 | ||||
| -rw-r--r-- | src/memo.txt | 11 | ||||
| -rw-r--r-- | src/oidc-agent.c | 812 | ||||
| -rw-r--r-- | src/oidc-agent.h | 119 | ||||
| -rw-r--r-- | src/test-aia-uds-bluez.c | 65 |
19 files changed, 2827 insertions, 0 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt new file mode 100644 index 0000000..e4a744b --- /dev/null +++ b/src/CMakeLists.txt @@ -0,0 +1,49 @@ +########################################################################### +# Copyright 2016, 2017 IoT.bzh +# +# author: José Bollo <jose.bollo@iot.bzh> +# author: Stéphane Desneux <stephane.desneux@iot.bzh> +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +########################################################################### + +PROJECT_TARGET_ADD(afb-identity-binding) + +add_library(afb-identity-binding MODULE + agl-identity-binding.c + agl-forgerock.c + aia-get.c + authorization.c + base64.c + curl-wrap.c + escape.c + oidc-agent.c +) + +pkg_check_modules(EXTRAS REQUIRED libcurl) + +set_target_properties(afb-identity-binding PROPERTIES + LABELS "BINDING" + PREFIX "" + COMPILE_FLAGS "${EXTRAS_CFLAGS} -DFOR_AFB_BINDING" + LINK_FLAGS "${BINDINGS_LINK_FLAG}" + LINK_LIBRARIES "${EXTRAS_LIBRARIES}" + OUTPUT_NAME "${TARGET_NAME}" +) + +add_custom_command(TARGET ${TARGET_NAME} +PRE_BUILD +COMMAND mkdir -p ${CMAKE_CURRENT_BINARY_DIR}/../package/htdocs +COMMAND cp -rv ${CMAKE_CURRENT_SOURCE_DIR}/../htdocs ${CMAKE_CURRENT_BINARY_DIR}/../package/ +COMMAND mkdir -p ${CMAKE_CURRENT_BINARY_DIR}/../package/etc +COMMAND cp -rv ${CMAKE_CURRENT_SOURCE_DIR}/../etc ${CMAKE_CURRENT_BINARY_DIR}/../package/) diff --git a/src/agl-forgerock.c b/src/agl-forgerock.c new file mode 100644 index 0000000..97cc4b9 --- /dev/null +++ b/src/agl-forgerock.c @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2015, 2016, 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include <stdio.h> +#include <string.h> + +#include <json-c/json.h> + +#define AFB_BINDING_VERSION 2 +#include <afb/afb-binding.h> + +#include "oidc-agent.h" +#include "aia-get.h" + +#ifndef NULL +#define NULL 0 +#endif + +static int expiration_delay = 5; + +static const char default_endpoint[] = "https://agl-graphapi.forgerocklabs.org/getuserprofilefromtoken"; +static const char *oidc_name; + +static char *endpoint; + +static void (*onloaded)(struct json_object *data, const char *error); + +/***** configuration ********************************************/ + +static void confsetstr(struct json_object *conf, const char *name, char **value, const char *def) +{ + struct json_object *v; + const char *s; + char *p; + + s = conf && json_object_object_get_ex(conf, name, &v) ? json_object_get_string(v) : def; + p = *value; + if (s && p != s) { + *value = strdup(s); + free(p); + } +} + +static void confsetint(struct json_object *conf, const char *name, int *value, int def) +{ + struct json_object *v; + + *value = conf && json_object_object_get_ex(conf, name, &v) ? json_object_get_int(v) : def; +} + +static void confsetoidc(struct json_object *conf, const char *name) +{ + struct json_object *idp, *appli; + + if (conf + && json_object_object_get_ex(conf, "idp", &idp) + && json_object_object_get_ex(conf, "appli", &appli)) { + if (oidc_idp_set(name, idp) && oidc_appli_set(name, name, appli, 1)) { + oidc_name = name; + } + } +} + +/****************************************************************/ + +static void loaded(struct json_object *data, const char *error) +{ + if (onloaded) + onloaded(data, error); +} + +static void downloaded(void *closure, int status, const void *buffer, size_t size) +{ + struct json_object *object, *subobj; + struct json_object *objkey = closure; + struct json_object *tmp; + + json_object_object_get_ex(objkey, "url", &tmp); + const char *url = json_object_get_string(tmp); + + /* checks whether discarded */ + if (status == 0 && !buffer) { + AFB_ERROR("discarded"); + loaded(NULL, "discarded"); + goto end; /* discarded */ + } + + /* scan for the status */ + if (status == 0 || !buffer) { + AFB_ERROR("uploading %s failed %s", url ? : "?", (const char*)buffer ? : ""); + loaded(NULL, "failed"); + goto end; + } + + /* get the object */ + AFB_DEBUG("received data: %.*s", (int)size, (char*)buffer); + object = json_tokener_parse(buffer); /* okay because 0 appended */ + + /* extract useful part */ + subobj = NULL; + if (object && !json_object_object_get_ex(object, "results", &subobj)) + subobj = NULL; + if (subobj) + subobj = json_object_array_get_idx(subobj, 0); + if (subobj && !json_object_object_get_ex(subobj, "data", &subobj)) + subobj = NULL; + if (subobj) + subobj = json_object_array_get_idx(subobj, 0); + if (subobj && !json_object_object_get_ex(subobj, "row", &subobj)) + subobj = NULL; + if (subobj) + subobj = json_object_array_get_idx(subobj, 0); + + /* is it a recognized user ? */ + if (!subobj) { + /* not recognized!! */ + AFB_INFO("unrecognized key for %s", url ? : "?"); + json_object_put(object); + loaded(NULL, "malformed"); + goto end; + } + + // Save the profile to the database + struct json_object* dbr; + struct json_object* record = json_object_new_object(); + json_object_object_add(record, "key", objkey); + json_object_object_add(record, "value", json_object_get(subobj)); + afb_service_call_sync("persistence", "update", record, &dbr); + + loaded(subobj, NULL); + json_object_put(object); +end: + json_object_put(objkey); +} + +/** public **************************************************************/ + +void agl_forgerock_setconfig(struct json_object *conf) +{ + confsetstr(conf, "endpoint", &endpoint, endpoint ? : default_endpoint); + confsetint(conf, "delay", &expiration_delay, expiration_delay); + confsetoidc(conf, "oidc-aia"); + AFB_NOTICE("Forgerock endpoint is: %s", endpoint); +} + +void agl_forgerock_setcb(void (*callback)(struct json_object *data, const char *error)) +{ + onloaded = callback; +} + +void reply_from_db(void* closure, int status, struct json_object* result) +{ + if (status) + { + AFB_WARNING("Failed to retrieve profile from persistence!"); + return; + } + + struct json_object* tmp; + json_object_object_get_ex(result, "response", &tmp); + json_object_object_get_ex(tmp, "value", &tmp); + AFB_NOTICE("User profile retrieved from persistence: %s", json_object_to_json_string(tmp)); + loaded(json_object_get(tmp), NULL); +} + +void agl_forgerock_download_request(const char *vin, const char *kind, const char *key) +{ + int rc; + char *url; + + rc = asprintf(&url, "%s?vin=%s&kind=%s&keytoken=%s", endpoint, vin, kind, key); + if (rc >= 0) + { + struct json_object* obj = json_object_new_object(); + json_object_object_add(obj, "url", json_object_new_string(url)); + json_object_object_add(obj, "vin", json_object_new_string(vin)); + json_object_object_add(obj, "kind", json_object_new_string(kind)); + json_object_object_add(obj, "key", json_object_new_string(key)); + + // Async get from database and from forgerock + struct json_object* key = json_object_new_object(); + json_object_object_add(key, "key", json_object_get(obj)); + afb_service_call("persistence", "read", key, reply_from_db, NULL); + + // Async get from forgerock + aia_get(url, expiration_delay, oidc_name, oidc_name, downloaded, obj); + free(url); + } + else + AFB_ERROR("out of memory"); +} + +/* vim: set colorcolumn=80: */ + diff --git a/src/agl-forgerock.h b/src/agl-forgerock.h new file mode 100644 index 0000000..1aee680 --- /dev/null +++ b/src/agl-forgerock.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +struct json_object; + +extern void agl_forgerock_setconfig(struct json_object *conf); +extern void agl_forgerock_setcb(void (*callback)(struct json_object *data, const char *error)); +extern void agl_forgerock_download_request(const char *vin, const char *kind, const char *key); diff --git a/src/agl-identity-binding.c b/src/agl-identity-binding.c new file mode 100644 index 0000000..12f43bd --- /dev/null +++ b/src/agl-identity-binding.c @@ -0,0 +1,333 @@ +/* + * Copyright (C) 2015, 2016, 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include <unistd.h> +#include <string.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <json-c/json.h> + +#define AFB_BINDING_VERSION 2 +#include <afb/afb-binding.h> + +#include "agl-forgerock.h" + +#ifndef NULL +#define NULL 0 +#endif + +static struct afb_event event; + +static struct json_object *current_identity; + +static const char default_vin[] = "4T1BF1FK5GU260429"; +static char *vin; + +/***** configuration ********************************************/ + +static struct json_object *readjson(int fd) +{ + char *buffer; + struct stat s; + struct json_object *result = NULL; + int rc; + + rc = fstat(fd, &s); + if (rc == 0 && S_ISREG(s.st_mode)) { + buffer = alloca((size_t)(s.st_size)+1); + if (read(fd, buffer, (size_t)s.st_size) == (ssize_t)s.st_size) { + buffer[s.st_size] = 0; + //AFB_NOTICE("Config file: %s", buffer); + result = json_tokener_parse(buffer); + //if (!result) + //{ + // AFB_ERROR("Config file is not a valid JSON: %s", json_tokener_error_desc(json_tokener_get_error(NULL))); + //} + } + } + close(fd); + + return result; +} + +static struct json_object *get_global_config(const char *name, const char *locale) +{ + int fd = afb_daemon_rootdir_open_locale(name, O_RDONLY, locale); + if (fd < 0) AFB_ERROR("Config file not found: %s", name); + return fd < 0 ? NULL : readjson(fd); +} + +static struct json_object *get_local_config(const char *name) +{ + int fd = openat(AT_FDCWD, name, O_RDONLY, 0); + return fd < 0 ? NULL : readjson(fd); +} + +static void confsetstr(struct json_object *conf, const char *name, char **value, const char *def) +{ + struct json_object *v; + const char *s; + char *p; + + s = conf && json_object_object_get_ex(conf, name, &v) ? json_object_get_string(v) : def; + p = *value; + if (s && p != s) { + *value = strdup(s); + free(p); + } +} + +static void setconfig(struct json_object *conf) +{ + if (conf) { + confsetstr(conf, "vin", &vin, vin ? : default_vin); + agl_forgerock_setconfig(conf); + } +} + +static void readconfig() +{ + setconfig(get_global_config("etc/config.json", NULL)); + setconfig(get_local_config("/etc/agl/identity-agent-config.json")); + setconfig(get_local_config("config.json")); +} + +/****************************************************************/ + +static struct json_object *make_event_object(const char *name, const char *id, const char *nick) +{ + struct json_object *object = json_object_new_object(); + + /* TODO: errors */ + json_object_object_add(object, "eventName", json_object_new_string(name)); + json_object_object_add(object, "accountid", json_object_new_string(id)); + if (nick) + json_object_object_add(object, "nickname", json_object_new_string(nick)); + return object; +} + +static int send_event_object(const char *name, const char *id, const char *nick) +{ + return afb_event_push(event, make_event_object(name, id, nick)); +} + +static void do_login(struct json_object *desc) +{ + if (current_identity == NULL && desc == NULL) return; // Switching from NULL to NULL -> do nothing + if (current_identity && desc) + { + const char* a = json_object_to_json_string(current_identity); + const char* b = json_object_to_json_string(desc); + if (strcmp(a, b) == 0) + { + AFB_NOTICE("Reloging of the same user."); + return; // Switching from one user to the same user -> do nothing + } + } + + struct json_object *object; + + /* switching the user */ + AFB_INFO("Switching to user %s", desc ? json_object_to_json_string(desc) : "null"); + object = current_identity; + current_identity = json_object_get(desc); + json_object_put(object); + + if (!json_object_object_get_ex(desc, "name", &object)) + object = 0; + send_event_object("login", !object ? "null" : json_object_get_string(object)? : "?", 0); +} + +static void do_logout() +{ + struct json_object *object; + + AFB_INFO("Switching to no user"); + object = current_identity; + current_identity = 0; + json_object_put(object); + + send_event_object("logout", "null", 0); +} + +static void on_forgerock_data(struct json_object *data, const char *error) +{ + if (error) { + AFB_ERROR("Can't get data: %s", error); + } else { + do_login(data); + } +} + +/****************************************************************/ + +static void subscribe (struct afb_req request) +{ + int rc; + + rc = afb_req_subscribe(request, event); + if (rc < 0) + afb_req_fail(request, "failed", "subscribtion failed"); + else + afb_req_success(request, NULL, NULL); +} + +static void unsubscribe (struct afb_req request) +{ + afb_req_unsubscribe(request, event); + afb_req_success(request, NULL, NULL); +} + +static void logout (struct afb_req request) +{ + do_logout(); + afb_req_success(request, NULL, NULL); +} + +static void fake_login (struct afb_req request) +{ + struct json_object *desc = afb_req_json(request); + do_logout(); + if (desc) + do_login(desc); + afb_req_success(request, NULL, NULL); +} + +static void get (struct afb_req request) +{ + afb_req_success(request, json_object_get(current_identity), NULL); +} + +static void on_nfc_subscribed(void *closure, int status, struct json_object *result) +{ + if(status) + AFB_ERROR("Failed to subscribe to nfc events."); +} + +static void on_nfc_started(void *closure, int status, struct json_object *result) +{ + if (!status) { + afb_service_call("nfc", "subscribe", NULL, on_nfc_subscribed, NULL); + } + else + AFB_ERROR("Failed to start nfc polling."); +} + +static int service_init() +{ + agl_forgerock_setcb(on_forgerock_data); + event = afb_daemon_make_event("event"); + if (!afb_event_is_valid(event)) + return -1; + + readconfig(); + + if (afb_daemon_require_api("nfc", 1)) + return -1; + + if (afb_daemon_require_api("persistence", 1)) + return -1; + + afb_service_call("nfc", "start", NULL, on_nfc_started, NULL); + + return 0; +} + +static void on_nfc_target_add(struct json_object *object) +{ + struct json_object * json_uid; + const char *uid; + + if (json_object_object_get_ex(object, "UID", &json_uid)) + { + uid = json_object_get_string(json_uid); + AFB_NOTICE("nfc tag detected, call forgerock with vincode=%s and key=%s", vin ? vin : default_vin, uid); + send_event_object("incoming", uid, uid); + agl_forgerock_download_request(vin ? vin : default_vin, "nfc", uid); + } + else AFB_ERROR("nfc target add event is received but no UID found: %s", json_object_to_json_string(object)); +} + +static void onevent(const char *event, struct json_object *object) +{ + AFB_NOTICE("Received event: %s", event); + if (!strcmp("nfc/on-nfc-target-add", event)) + { + on_nfc_target_add(object); + return; + } + AFB_WARNING("Unhandled event: %s", event); +} + +static void fake_auth(struct afb_req req) +{ + struct json_object* req_object; + struct json_object* kind_object; + struct json_object* key_object; + + req_object = afb_req_json(req); + + if (!json_object_object_get_ex(req_object, "kind", &kind_object)) + { + afb_req_fail(req, "Missing arg: kind", NULL); + return; + } + + if (!json_object_object_get_ex(req_object, "key", &key_object)) + { + afb_req_fail(req, "Missing arg: key", NULL); + return; + } + + const char* kind = json_object_get_string(kind_object); + const char* key = json_object_get_string(key_object); + + send_event_object("incoming", key, key); + agl_forgerock_download_request(vin ? vin : default_vin, kind, key); + + afb_req_success(req, NULL, "fake auth success!"); +} + +// NOTE: this sample does not use session to keep test a basic as possible +// in real application most APIs should be protected with AFB_SESSION_CHECK +static const struct afb_verb_v2 verbs[]= +{ + {"subscribe" , subscribe , NULL, "subscribe to events" , AFB_SESSION_NONE }, + {"unsubscribe", unsubscribe , NULL, "unsubscribe to events" , AFB_SESSION_NONE }, + {"fake-login" , fake_login , NULL, "fake a login" , AFB_SESSION_NONE }, + {"logout" , logout , NULL, "log the current user out", AFB_SESSION_NONE }, + {"get" , get , NULL, "get data" , AFB_SESSION_NONE }, + {"fake-auth" , fake_auth , NULL, "fake an authentication" , AFB_SESSION_NONE }, + {NULL} +}; + +const struct afb_binding_v2 afbBindingV2 = +{ + .api = "identity", + .specification = NULL, + .info = "AGL identity service", + .verbs = verbs, + .preinit = NULL, + .init = service_init, + .onevent = onevent, + .noconcurrency = 0 +}; + +/* vim: set colorcolumn=80: */ diff --git a/src/aia-get.c b/src/aia-get.c new file mode 100644 index 0000000..56c82b0 --- /dev/null +++ b/src/aia-get.c @@ -0,0 +1,245 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <pthread.h> + +#include <json-c/json.h> +#include <curl/curl.h> + +#include "curl-wrap.h" +#include "oidc-agent.h" + +/* +#include <errno.h> +#include <stdint.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <json-c/json.h> + +#include <afb/afb-binding.h> +#include <afb/afb-req-itf.h> +#include <afb/afb-event-itf.h> +#include <afb/afb-service-itf.h> + + +#include "u2f-bluez.h" +*/ + + +struct keyrequest { + struct keyrequest *next; + int dead; + time_t expiration; + const char *url; + const char *appli; + const char *idp; + void (*callback)(void *closure, int status, const void *buffer, size_t size); + void *closure; + json_object *token; + pthread_t tid; +}; + +static struct keyrequest *keyrequests = 0; + +static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; + +static int curl_initialized = 0; + +static void perform_query_callback(void *closure, int status, CURL *curl, const char *result, size_t size) +{ + struct keyrequest *kr = closure; + kr->callback(kr->closure, status, result, size); +} + +static void perform_query(struct keyrequest *kr) +{ + CURL *curl; + + curl = curl_wrap_prepare_get_url(kr->url); + if (!curl) + kr->callback(kr->closure, 0, "out of memory", 0); + else { + oidc_add_bearer(curl, kr->token); + curl_wrap_do(curl, perform_query_callback, kr); + } +} + +static void token_success(void *closure, struct json_object *token) +{ + struct keyrequest *kr = closure; + kr->token = token; + perform_query(kr); +} + +static void token_error(void *closure, const char *message, const char *indice) +{ + struct keyrequest *kr = closure; + kr->callback(kr->closure, 0, message, 0); +} + +static void *kr_get_thread(void *closure) +{ + struct oidc_grant_cb cb; + struct keyrequest *kr = closure; + + if (!kr->appli) + perform_query(kr); + else { + cb.closure = kr; + cb.success = token_success; + cb.error = token_error; + oidc_grant_owner_password(kr->appli, kr->idp, NULL, &cb); + } + kr->dead = 1; + return NULL; +} + +static void kr_free(struct keyrequest *kr) +{ + json_object_put(kr->token); + free(kr); +} + +static struct keyrequest *kr_alloc( + const char *url, + time_t expiration, + const char *appli, + const char *idp, + void (*callback)(void *closure, int status, const void *buffer, size_t size), + void *closure +) +{ + struct keyrequest *result; + char *buf; + size_t surl, sappli, sidp; + + surl = 1 + strlen(url); + sappli = appli ? 1 + strlen(appli) : 0; + sidp = idp ? 1 + strlen(idp) : 0; + + result = calloc(1, surl + sappli + sidp + sizeof *result); + if (result) { + result->next = NULL; + result->dead = 0; + result->expiration = expiration; + result->callback = callback; + result->closure = closure; + result->token = NULL; + result->tid = 0; + + buf = (char*)(&result[1]); + result->url = buf; + buf = mempcpy(buf, url, surl); + if (!appli) + result->appli = NULL; + else { + result->appli = buf; + buf = mempcpy(buf, appli, sappli); + } + if (!idp) + result->idp = NULL; + else { + result->idp = buf; + buf = mempcpy(buf, idp, sidp); + } + } + return result; +} + +void aia_get( + const char *url, + int delay, + const char *appli, + const char *idp, + void (*callback)(void *closure, int status, const void *buffer, size_t size), + void *closure +) +{ + int rc; + time_t now; + struct keyrequest **pkr, *kr, *found_kr; + + /* initialize CURL component */ + pthread_mutex_lock(&mutex); + if (!curl_initialized) { + curl_initialized = 1; + curl_global_init(CURL_GLOBAL_DEFAULT); + } + + /* search for the same request and also cleanup deads */ + now = time(NULL); + found_kr = 0; + pkr = &keyrequests; + kr = *pkr; + while (kr) { + if (now > kr->expiration) { + if (kr->dead) { + *pkr = kr->next; + kr_free(kr); + } else { + pkr = &kr->next; + } + } else { + if (!strcmp(url, kr->url)) + found_kr = kr; + pkr = &kr->next; + } + kr = *pkr; + } + + /* check if found and pending */ + if (found_kr) { + /* found -> cancel */ + pthread_mutex_unlock(&mutex); + callback(closure, 0, NULL, 0); + return; + } + + /* allocates the keyrequest */ + kr = kr_alloc(url, now + delay, appli, idp, callback, closure); + if (!kr) { + pthread_mutex_unlock(&mutex); + callback(closure, 0, "Out of memory", 0); + return; + } + + /* link the request */ + kr->next = keyrequests; + keyrequests = kr; + + /* makes the request in a new thread */ + rc = pthread_create(&kr->tid, 0, kr_get_thread, kr); + if (rc != 0) { + /* error, unlink */ + keyrequests = kr->next; + pthread_mutex_unlock(&mutex); + kr_free(kr); + callback(closure, 0, "Can't create a new thread", 0); + return; + } + pthread_mutex_unlock(&mutex); +} + +/* vim: set colorcolumn=80: */ + diff --git a/src/aia-get.h b/src/aia-get.h new file mode 100644 index 0000000..be1a1f8 --- /dev/null +++ b/src/aia-get.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +extern void aia_get( + const char *url, + int delay, + const char *appli, + const char *idp, + void (*callback)(void *closure, int status, const void *buffer, size_t size), + void *closure +); + diff --git a/src/authorization.c b/src/authorization.c new file mode 100644 index 0000000..ae00923 --- /dev/null +++ b/src/authorization.c @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE + +#include <stdlib.h> +#include <stdio.h> + +#include "base64.h" + +char *authorization_basic_make(const char *user, const char *password) +{ + const char *array[3] = { user, ":", password }; + return base64_encode_array(array, 3); +} + +char *authorization_basic_make_header(const char *user, const char *password) +{ + char *key, *result; + + key = authorization_basic_make(user, password); + if (!key || asprintf(&result, "Authorization: Basic %s", key) < 0) + result = NULL; + free(key); + return result; +} + +/* vim: set colorcolumn=80: */ + diff --git a/src/authorization.h b/src/authorization.h new file mode 100644 index 0000000..bd26c1a --- /dev/null +++ b/src/authorization.h @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +extern char *authorization_basic_make(const char *user, const char *password); +extern char *authorization_basic_make_header(const char *user, const char *password); + +/* vim: set colorcolumn=80: */ diff --git a/src/base64.c b/src/base64.c new file mode 100644 index 0000000..0841aba --- /dev/null +++ b/src/base64.c @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdlib.h> +#include <stdint.h> +#include <string.h> + +const char base64_variant_standard[] = "+/="; +const char base64_variant_url[] = "-_="; +const char base64_variant_trunc[] = "+/"; +const char base64_variant_url_trunc[] = "-_"; + +static char eb64(int x, const char *variant) +{ + if (x < 52) + return (char)(x + (x < 26 ? 'A' : 'a'-26)); + else + return x < 62 ? (char)(x + '0' - 52) : variant[x - 62]; +} + +char *base64_encode_array_variant(const char * const *args, size_t count, const char *variant) +{ + const char *v, *s; + char *buffer, c; + size_t i, j, n; + uint16_t x; + + /* compute size and allocate */ + i = n = 0; + while (n < count) + i += strlen(args[n++]); + buffer = malloc(5 + ((i / 3) << 2)); + if (!buffer) + return NULL; + + /* encode */ + v = variant ? : base64_variant_standard; + n = 0; + j = 0; + x = 0; + while (n < count) { + s = args[n++]; + c = s[i = 0]; + while (c) { + x = (uint16_t)((uint16_t)(x << 8) | (uint16_t)(uint8_t)c); + switch (j & 3) { + case 0: + buffer[j++] = eb64((x >> 2) & 63, v); + break; + case 1: + buffer[j++] = eb64((x >> 4) & 63, v); + break; + case 2: + buffer[j++] = eb64((x >> 6) & 63, v); + buffer[j++] = eb64(x & 63, v); + break; + } + c = s[++i]; + } + } + + /* pad */ + if (v[2]) { + switch (j & 3) { + case 1: + buffer[j++] = eb64((x << 4) & 63, v); + buffer[j++] = v[2]; + buffer[j++] = v[2]; + break; + case 2: + buffer[j++] = eb64((x << 2) & 63, v); + buffer[j++] = v[2]; + break; + } + } + + /* done */ + buffer[j] = 0; + return buffer; +} + +char *base64_encode_multi_variant(const char * const *args, const char *variant) +{ + size_t count; + + for (count = 0 ; args[count] ; count++); + return base64_encode_array_variant(args, count, variant); +} + +char *base64_encode_variant(const char *arg, const char *variant) +{ + return base64_encode_array_variant(&arg, !!arg, variant); +} + diff --git a/src/base64.h b/src/base64.h new file mode 100644 index 0000000..5a944df --- /dev/null +++ b/src/base64.h @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +extern const char base64_variant_standard[]; +extern const char base64_variant_trunc[]; + +extern const char base64_variant_url[]; +extern const char base64_variant_url_trunc[]; + +extern char *base64_encode_array_variant(const char * const *args, size_t count, const char *variant); +extern char *base64_encode_multi_variant(const char * const *args, const char *variant); +extern char *base64_encode_variant(const char *arg, const char *variant); + +#define base64_encode_array(args,count) base64_encode_array_variant(args,count,base64_variant_standard) +#define base64_encode_multi(args) base64_encode_multi_variant(args,base64_variant_standard) +#define base64_encode(arg) base64_encode_variant(arg,base64_variant_standard) + +#define base64_encode_array_standard(args,count) base64_encode_array_variant(args,count,base64_variant_standard) +#define base64_encode_multi_standard(args) base64_encode_multi_variant(args,base64_variant_standard) +#define base64_encode_standard(arg) base64_encode_variant(arg,base64_variant_standard) + +#define base64_encode_array_url(args,count) base64_encode_array_variant(args,count,base64_variant_url) +#define base64_encode_multi_url(args) base64_encode_multi_variant(args,base64_variant_url) +#define base64_encode_url(arg) base64_encode_variant(arg,base64_variant_url) + +#define base64_encode_array_trunc(args,count) base64_encode_array_variant(args,count,base64_variant_trunc) +#define base64_encode_multi_trunc(args) base64_encode_multi_variant(args,base64_variant_trunc) +#define base64_encode_trunc(arg) base64_encode_variant(arg,base64_variant_trunc) + +#define base64_encode_array_url_trunc(args,count) base64_encode_array_variant(args,count,base64_variant_url_trunc) +#define base64_encode_multi_url_trunc(args) base64_encode_multi_variant(args,base64_variant_url_trunc) +#define base64_encode_url_trunc(arg) base64_encode_variant(arg,base64_variant_url_trunc) + + + diff --git a/src/curl-wrap.c b/src/curl-wrap.c new file mode 100644 index 0000000..3c566a3 --- /dev/null +++ b/src/curl-wrap.c @@ -0,0 +1,210 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +#include <curl/curl.h> + +#include "curl-wrap.h" +#include "escape.h" + + +/* internal representation of buffers */ +struct buffer { + size_t size; + char *data; +}; + +/* write callback for filling buffers with the response */ +static size_t write_callback(char *ptr, size_t size, size_t nmemb, void *userdata) +{ + struct buffer *buffer = userdata; + size_t sz = size * nmemb; + size_t old_size = buffer->size; + size_t new_size = old_size + sz; + char *data = realloc(buffer->data, new_size + 1); + if (!data) + return 0; + memcpy(&data[old_size], ptr, sz); + data[new_size] = 0; + buffer->size = new_size; + buffer->data = data; + return sz; +} + +/* + * Perform the CURL operation for 'curl' and put the result in + * memory. If 'result' isn't NULL it receives the returned content + * that then must be freed. If 'size' isn't NULL, it receives the + * size of the returned content. Note that if not NULL, the real + * content is one byte greater than the read size and the last byte + * zero. This facility allows to handle the returned content as a + * null terminated C-string. + */ +int curl_wrap_perform(CURL *curl, char **result, size_t *size) +{ + int rc; + struct buffer buffer; + CURLcode code; + + /* init tthe buffer */ + buffer.size = 0; + buffer.data = NULL; + + /* Perform the request, res will get the return code */ + curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback); + curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer); + + /* Perform the request, res will get the return code */ + code = curl_easy_perform(curl); + rc = code == CURLE_OK; + + /* Check for no errors */ + if (rc) { + /* no error */ + if (size) + *size = buffer.size; + if (result) + *result = buffer.data; + else + free(buffer.data); + } else { + /* had error */ + if (size) + *size = 0; + if (result) + *result = NULL; + free(buffer.data); + } + + return rc; +} + +void curl_wrap_do(CURL *curl, void (*callback)(void *closure, int status, CURL *curl, const char *result, size_t size), void *closure) +{ + int rc; + char *result; + size_t size; + char errbuf[CURL_ERROR_SIZE]; + + curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errbuf); + rc = curl_wrap_perform(curl, &result, &size); + if (rc) + callback(closure, rc, curl, result, size); + else + callback(closure, rc, curl, errbuf, 0); + free(result); + curl_easy_cleanup(curl); +} + +int curl_wrap_content_type_is(CURL *curl, const char *value) +{ + char *actual; + CURLcode code; + + code = curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, &actual); + if (code != CURLE_OK || !actual) + return 0; + + return !strncasecmp(actual, value, strcspn(actual, "; ")); +} + +CURL *curl_wrap_prepare_get_url(const char *url) +{ + CURL *curl; + CURLcode code; + + curl = curl_easy_init(); + if(curl) { + code = curl_easy_setopt(curl, CURLOPT_URL, url); + if (code == CURLE_OK) + return curl; + curl_easy_cleanup(curl); + } + return NULL; +} + +CURL *curl_wrap_prepare_get(const char *base, const char *path, const char * const *args) +{ + CURL *res; + char *url; + + url = escape_url(base, path, args, NULL); + res = url ? curl_wrap_prepare_get_url(url) : NULL; + free(url); + return res; +} + +int curl_wrap_add_header(CURL *curl, const char *header) +{ + int rc; + struct curl_slist *list; + + list = curl_slist_append(NULL, header); + rc = list ? curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list) == CURLE_OK : 0; +/* + curl_slist_free_all(list); +*/ + return rc; +} + +int curl_wrap_add_header_value(CURL *curl, const char *name, const char *value) +{ + char *h; + int rc; + + rc = asprintf(&h, "%s: %s", name, value); + rc = rc < 0 ? 0 : curl_wrap_add_header(curl, h); + free(h); + return rc; +} + + +CURL *curl_wrap_prepare_post_url_data(const char *url, const char *datatype, const char *data, size_t szdata) +{ + CURL *curl; + + curl = curl_easy_init(); + if (curl + && CURLE_OK == curl_easy_setopt(curl, CURLOPT_URL, url) + && (!szdata || CURLE_OK == curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, szdata)) + && CURLE_OK == curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data) + && (!datatype || curl_wrap_add_header_value(curl, "content-type", datatype))) + return curl; + curl_easy_cleanup(curl); + return NULL; +} + +CURL *curl_wrap_prepare_post(const char *base, const char *path, const char * const *args) +{ + CURL *res; + char *url; + char *data; + size_t szdata; + + url = escape_url(base, path, NULL, NULL); + data = escape_args(args, &szdata); + res = url ? curl_wrap_prepare_post_url_data(url, NULL, data, szdata) : NULL; + free(url); + return res; +} + +/* vim: set colorcolumn=80: */ diff --git a/src/curl-wrap.h b/src/curl-wrap.h new file mode 100644 index 0000000..2e44f47 --- /dev/null +++ b/src/curl-wrap.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#pragma once + +#include <curl/curl.h> + +extern char *curl_wrap_url (const char *base, const char *path, + const char *const *query, size_t * size); + +extern int curl_wrap_perform (CURL * curl, char **result, size_t * size); + +extern void curl_wrap_do(CURL *curl, void (*callback)(void *closure, int status, CURL *curl, const char *result, size_t size), void *closure); + +extern int curl_wrap_content_type_is (CURL * curl, const char *value); + +extern CURL *curl_wrap_prepare_get_url(const char *url); + +extern CURL *curl_wrap_prepare_get(const char *base, const char *path, const char * const *args); + +extern CURL *curl_wrap_prepare_post_url_data(const char *url, const char *datatype, const char *data, size_t szdata); + +extern CURL *curl_wrap_prepare_post(const char *base, const char *path, const char * const *args); + +extern int curl_wrap_add_header(CURL *curl, const char *header); + +extern int curl_wrap_add_header_value(CURL *curl, const char *name, const char *value); + +/* vim: set colorcolumn=80: */ + diff --git a/src/escape.c b/src/escape.c new file mode 100644 index 0000000..3bb25c2 --- /dev/null +++ b/src/escape.c @@ -0,0 +1,428 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +/* + * Test if 'c' is to be escaped or not. + * Any character that is not in [-.0-9A-Z_a-z~] + * must be escaped. + * Note that space versus + is not managed here. + */ +static inline int should_escape(char c) +{ +/* ASCII CODES OF UNESCAPED CHARS +car hx/oct idx +'-' 2d/055 1 +'.' 2e/056 2 +'0' 30/060 3 +... .. +'9' 39/071 12 +'A' 41/101 13 +... .. +'Z' 5a/132 38 +'_' 5f/137 39 +'a' 61/141 40 +... .. +'z' 7a/172 65 +'~' 7e/176 66 +*/ + /* [-.0-9A-Z_a-z~] */ + if (c <= 'Z') { + /* [-.0-9A-Z] */ + if (c < '0') { + /* [-.] */ + return c != '-' && c != '.'; + } else { + /* [0-9A-Z] */ + return c < 'A' && c > '9'; + } + } else { + /* [_a-z~] */ + if (c <= 'z') { + /* [_a-z] */ + return c < 'a' && c != '_'; + } else { + /* [~] */ + return c != '~'; + } + } +} + +/* + * returns the ASCII char for the hexadecimal + * digit of the binary value 'f'. + * returns 0 if f isn't in [0 ... 15]. + */ +static inline char bin2hex(int f) +{ + if ((f & 15) != f) + f = 0; + else if (f < 10) + f += '0'; + else + f += 'A' - 10; + return (char)f; +} + +/* + * returns the binary value for the hexadecimal + * digit whose char is 'c'. + * returns -1 if c isn't i n[0-9A-Fa-f] + */ +static inline int hex2bin(char c) +{ + /* [0-9A-Fa-f] */ + if (c <= 'F') { + /* [0-9A-F] */ + if (c <= '9') { + /* [0-9] */ + if (c >= '0') { + return (int)(c - '0'); + } + } else if (c >= 'A') { + /* [A-F] */ + return (int)(c - ('A' - 10)); + } + } else { + /* [a-f] */ + if (c >= 'a' && c <= 'f') { + return (int)(c - ('a' - 10)); + } + } + return -1; +} + +/* + * returns the length that will have the text 'itext' of length + * 'ilen' when escaped. When 'ilen' == 0, strlen is used to + * compute the size of 'itext'. + */ +static size_t escaped_length(const char *itext, size_t ilen) +{ + char c; + size_t i, r; + + if (!ilen) + ilen = strlen(itext); + c = itext[i = r = 0]; + while (i < ilen) { + r += c != ' ' && should_escape(c) ? 3 : 1; + c = itext[++i]; + } + return r; +} + +/* + * Escapes the text 'itext' of length 'ilen'. + * When 'ilen' == 0, strlen is used to compute the size of 'itext'. + * The escaped text is put in 'otext' of length 'olen'. + * Returns the length of the escaped text (it can be greater than 'olen'). + * When 'olen' is greater than the needed length, an extra null terminator + * is appened to the escaped string. + */ +static size_t escape_to(const char *itext, size_t ilen, char *otext, size_t olen) +{ + char c; + size_t i, r; + + if (!ilen) + ilen = strlen(itext); + c = itext[i = r = 0]; + while (i < ilen) { + if (c == ' ') + c = '+'; + else if (should_escape(c)) { + if (r < olen) + otext[r] = '%'; + r++; + if (r < olen) + otext[r] = bin2hex((c >> 4) & 15); + r++; + c = bin2hex(c & 15); + } + if (r < olen) + otext[r] = c; + r++; + c = itext[++i]; + } + if (r < olen) + otext[r] = 0; + return r; +} + +/* + * returns the length of 'itext' of length 'ilen' that can be unescaped. + * compute the size of 'itext' when 'ilen' == 0. + */ +static size_t unescapable_length(const char *itext, size_t ilen) +{ + char c; + size_t i; + + c = itext[i = 0]; + while (i < ilen) { + if (c != '%') + i++; + else { + if (i + 3 > ilen + || hex2bin(itext[i + 1]) < 0 + || hex2bin(itext[i + 2]) < 0) + break; + i += 3; + } + c = itext[i]; + } + return i; +} + +/* + * returns the length that will have the text 'itext' of length + * 'ilen' when escaped. When 'ilen' == 0, strlen is used to + * compute the size of 'itext'. + */ +static size_t unescaped_length(const char *itext, size_t ilen) +{ + char c; + size_t i, r; + + c = itext[i = r = 0]; + while (i < ilen) { + i += (size_t)(1 + ((c == '%') << 1)); + r++; + c = itext[i]; + } + return r; +} + +static size_t unescape_to(const char *itext, size_t ilen, char *otext, size_t olen) +{ + char c; + size_t i, r; + int h, l; + + ilen = unescapable_length(itext, ilen); + c = itext[i = r = 0]; + while (i < ilen) { + if (c != '%') { + if (c == '+') + c = ' '; + i++; + } else { + if (i + 2 >= ilen) + break; + h = hex2bin(itext[i + 1]); + l = hex2bin(itext[i + 2]); + c = (char)((h << 4) | l); + i += 3; + } + if (r < olen) + otext[r] = c; + r++; + c = itext[i]; + } + if (r < olen) + otext[r] = 0; + return r; +} + +/* create an url */ +char *escape_url(const char *base, const char *path, const char * const *args, size_t *length) +{ + int i; + size_t lb, lp, lq, l, L; + const char *null; + char *result; + + /* ensure args */ + if (!args) { + null = NULL; + args = &null; + } + + /* compute lengths */ + lb = base ? strlen(base) : 0; + lp = path ? strlen(path) : 0; + lq = 0; + i = 0; + while (args[i]) { + lq += 1 + escaped_length(args[i], strlen(args[i])); + i++; + if (args[i]) + lq += 1 + escaped_length(args[i], strlen(args[i])); + i++; + } + + /* allocation */ + L = lb + lp + lq + 1; + result = malloc(L + 1); + if (result) { + /* make the resulting url */ + l = lb; + if (lb) { + memcpy(result, base, lb); + if (result[l - 1] != '/' && path && path[0] != '/') + result[l++] = '/'; + } + if (lp) { + memcpy(result + l, path, lp); + l += lp; + } + i = 0; + while (args[i]) { + if (i) { + result[l++] = '&'; + } else if (base || path) { + result[l] = memchr(result, '?', l) ? '&' : '?'; + l++; + } + l += escape_to(args[i], strlen(args[i]), result + l, L - l); + i++; + if (args[i]) { + result[l++] = '='; + l += escape_to(args[i], strlen(args[i]), result + l, L - l); + } + i++; + } + result[l] = 0; + if (length) + *length = l; + } + return result; +} + +char *escape_args(const char * const *args, size_t *length) +{ + return escape_url(NULL, NULL, args, length); +} + +const char **unescape_args(const char *args) +{ + const char **r, **q; + char c, *p; + size_t j, z, l, n, lt; + + lt = n = 0; + if (args[0]) { + z = 0; + do { + l = strcspn(&args[z], "&="); + j = 1 + unescaped_length(&args[z], l); + lt += j; + z += l; + c = args[z++]; + if (c == '=') { + l = strcspn(&args[z], "&"); + j = 1 + unescaped_length(&args[z], l); + lt += j; + z += l; + c = args[z++]; + } + n++; + } while(c); + } + + l = lt + (2 * n + 1) * sizeof(char *); + r = malloc(l); + if (!r) + return r; + + q = r; + p = (void*)&r[2 * n + 1]; + if (args[0]) { + z = 0; + do { + q[0] = p; + l = strcspn(&args[z], "&="); + j = 1 + unescape_to(&args[z], l, p, lt); + lt -= j; + p += j; + z += l; + c = args[z++]; + if (c != '=') + q[1] = NULL; + else { + q[1] = p; + l = strcspn(&args[z], "&"); + j = 1 + unescape_to(&args[z], l, p, lt); + lt -= j; + p += j; + z += l; + c = args[z++]; + } + q = &q[2]; + } while(c); + } + q[0] = NULL; + return r; +} + +char *escape(const char *text, size_t textlen, size_t *reslength) +{ + size_t len; + char *result; + + len = 1 + escaped_length(text, textlen); + result = malloc(len); + if (result) + escape_to(text, textlen, result, len); + if (reslength) + *reslength = len - 1; + return result; +} + +char *unescape(const char *text, size_t textlen, size_t *reslength) +{ + size_t len; + char *result; + + len = 1 + unescaped_length(text, textlen); + result = malloc(len); + if (result) + unescape_to(text, textlen, result, len); + if (reslength) + *reslength = len - 1; + return result; +} + +#if 1 +#include <stdio.h> +int main(int ac, char **av) +{ + int i; + char *x = escape_args((void*)++av, NULL); + char *y = escape(x, strlen(x), NULL); + char *z = unescape(y, strlen(y), NULL); + const char **v = unescape_args(x); + + printf("%s\n%s\n%s\n", x, y, z); + free(x); + free(y); + free(z); + i = 0; + while(v[i]) { + printf("%s=%s / %s=%s\n", av[i], av[i+1], v[i], v[i+1]); + i += 2; + } + free(v); + return 0; +} +#endif +/* vim: set colorcolumn=80: */ diff --git a/src/escape.h b/src/escape.h new file mode 100644 index 0000000..7d548db --- /dev/null +++ b/src/escape.h @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#pragma once + +extern char *escape_url(const char *base, const char *path, const char * const *args, size_t *length); +extern char *escape_args(const char * const *args, size_t *length); +extern const char **unescape_args(const char *args); + +/* vim: set colorcolumn=80: */ diff --git a/src/export.map b/src/export.map new file mode 100644 index 0000000..ee2f413 --- /dev/null +++ b/src/export.map @@ -0,0 +1 @@ +{ global: afbBindingV*; local: *; }; diff --git a/src/memo.txt b/src/memo.txt new file mode 100644 index 0000000..3a6ed50 --- /dev/null +++ b/src/memo.txt @@ -0,0 +1,11 @@ + +gcc --shared -fPIC -o aia.so [^t]*.c -lcurl -lsystemd -ljson-c + +afb-daemon --rootdir=. --ldpaths=. --port=1212 --token= --verbose --verbose --verbose + + +afb-client-demo localhost:1212/api?token=t +agl-identity-agent subscribe + + +gcc -o taia *aia-uds-bluez.c -lsystemd diff --git a/src/oidc-agent.c b/src/oidc-agent.c new file mode 100644 index 0000000..1f09e7a --- /dev/null +++ b/src/oidc-agent.c @@ -0,0 +1,812 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE + +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> +#include <string.h> +#include <pthread.h> + +#include <json-c/json.h> + +#include "oidc-agent.h" +#include "escape.h" +#include "curl-wrap.h" + +/***************** utilities *************************/ + +static const char string_empty[] = ""; +static const char string_authorization_endpoint[] = "authorization_endpoint"; +static const char string_token_endpoint[] = "token_endpoint"; +#if 0 +static const char string_issuer[] = "issuer"; +static const char string_userinfo_endpoint[] = "userinfo_endpoint"; +static const char string_revocation_endpoint[] = "revocation_endpoint"; +static const char string_jwks_uri[] = "jwks_uri"; +#endif + +#define MAX_IDP_COUNT 20 +#define MAX_APPLI_COUNT 100 + +static struct json_object *idps; +static struct json_object *applis; + +static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER; + +/***************** utilities *************************/ + +/* + * Get the object of 'name' in the 'container' and return it. + * Creates the result if needed and add it to the container. + * When 'maxcount' isn't zero the final count will not exceed 'maxcount'. + */ +static struct json_object *j_container_item(struct json_object *container, const char *name, int maxcount) +{ + struct json_object *result; + + /* ensure object of 'name' exists */ + if (!json_object_object_get_ex(container, name, &result)) { + if (maxcount && json_object_object_length(container) >= maxcount) + return NULL; + result = json_object_new_object(); + if (!result) + return NULL; + json_object_object_add (container, name, result); + } + return result; +} + +/* + * Like 'j_container_item' but also creates the 'container' if needed. + */ +static struct json_object *j_container_item_make(struct json_object **container, const char *name, int maxcount) +{ + struct json_object *cont; + + /* ensure container exists */ + cont = *container; + if (!cont) { + cont = json_object_new_object(); + if (!cont) + return NULL; + *container = cont; + } + return j_container_item(cont, name, maxcount); +} + +/* + * Adds in 'dest' the fields of 'src' + * Also when the value of a field of 'src' is null, delete the field of 'dst' + */ +static void j_merge(struct json_object *dest, struct json_object *src) +{ + struct json_object_iter i; + json_object_object_foreachC(src, i) { + if (json_object_is_type(i.val, json_type_null)) + json_object_object_del(dest, i.key); + else + json_object_object_add(dest, i.key, json_object_get(i.val)); + } +} + +/***************** IDP **************************/ + +/* + * Set the values of 'desc' for the idp of 'name'. + * Return 0 on error or 1 on success. + */ +int oidc_idp_set(const char *name, struct json_object *desc) +{ + struct json_object *idp; + int result = 0; + + pthread_rwlock_wrlock(&rwlock); + idp = j_container_item_make(&idps, name, MAX_IDP_COUNT); + if (idp) { + j_merge(idp, desc); + result = 1; + } + pthread_rwlock_unlock(&rwlock); + return result; +} + +/* + * Return 1 if idp of 'name' exists or 0 otherwise. + */ +int oidc_idp_exists(const char *name) +{ + int result; + + pthread_rwlock_rdlock(&rwlock); + result = json_object_object_get_ex(idps, name, NULL); + pthread_rwlock_unlock(&rwlock); + + return result; +} + +/* + * Deletes the idp of 'name'. + */ +void oidc_idp_delete(const char *name) +{ + pthread_rwlock_wrlock(&rwlock); + json_object_object_del(idps, name); + pthread_rwlock_unlock(&rwlock); +} + +/***************** APPLI **************************/ + +/* + * Returns the name of the idp of the 'appli'. + * Returns NULL when appli isn't set or default idp isn't set. + */ +static const char *get_default_idp(const char *appli) +{ + struct json_object *a, *i; + + if (!json_object_object_get_ex(applis, appli, &a)) + return NULL; + if (!json_object_object_get_ex(a, string_empty, &i)) + return NULL; + return json_object_get_string(i); +} + +/* + * Returns the application data related to the 'appli' for the 'idp'. + * If 'ja' isn't null, returns in it the object for the application 'appli'. + * Returns NULL in case of error. + */ +static struct json_object *get_appli_idp(const char *appli, const char *idp, struct json_object **ja) +{ + struct json_object *a, *i; + + if (!json_object_object_get_ex(applis, appli, &a) || !json_object_object_get_ex(a, idp, &i)) + return NULL; + if (ja) + *ja = a; + return i; +} + +/* + * Set the description 'desc' for the application of 'name' and + * the 'idp'. When 'make_default' is set it, make it the default idp + * for the application. + * Return 0 on error or 1 on success. + */ +int oidc_appli_set(const char *name, const char *idp, struct json_object *desc, int make_default) +{ + struct json_object *a, *ai; + int result = 0; + + pthread_rwlock_wrlock(&rwlock); + a = j_container_item_make(&applis, name, MAX_APPLI_COUNT); + if (a) { + ai = j_container_item(a, idp, 0); + if (ai) { + j_merge(ai, desc); + if (make_default || !json_object_object_get_ex(a, string_empty, NULL)) + json_object_object_add(a, string_empty, json_object_new_string(idp)); + result = 1; + } + } + pthread_rwlock_unlock(&rwlock); + return result; +} + +/* + * Is the appli of 'name' defined? + * Return 1 if answer is yes or 0 for no. + */ +int oidc_appli_exists(const char *name) +{ + int result; + + pthread_rwlock_rdlock(&rwlock); + result = json_object_object_get_ex(applis, name, NULL); + pthread_rwlock_unlock(&rwlock); + + return result; +} + +/* + * Does the appli of 'name' has the 'idp' defined? + * Return 1 if answer is yes or 0 for no. + */ +int oidc_appli_has_idp(const char *name, const char *idp) +{ + int result; + + pthread_rwlock_rdlock(&rwlock); + result = !!get_appli_idp(name, idp, NULL); + pthread_rwlock_unlock(&rwlock); + + return result; +} + +/* + * Set 'idp' as default for the application of 'name'. + * Returns 0 on error (appli or idp for appli not existing) + * or 1 in case of success. + */ +int oidc_appli_set_default_idp(const char *name, const char *idp) +{ + struct json_object *a, *i; + + pthread_rwlock_wrlock(&rwlock); + i = get_appli_idp(name, idp, &a); + if (i) + json_object_object_add(a, string_empty, json_object_new_string(idp)); + pthread_rwlock_unlock(&rwlock); + + return !!i; +} + +/* + * Deletes the application of 'name' + */ +void oidc_appli_delete(const char *name) +{ + pthread_rwlock_wrlock(&rwlock); + json_object_object_del(applis, name); + pthread_rwlock_unlock(&rwlock); +} + +/***************** AUTHORISATION **************************/ + +/* parameters */ +enum param +{ + Param_Access_Token, + Param_Acr_Values, + Param_Authorization, + Param_Client_Id, + Param_Client_Secret, + Param_Code, + Param_Display, + Param_Error, + Param_Error_Description, + Param_Error_Uri, + Param_Expires_In, + Param_Grant_Type, + Param_Id_Token, + Param_Id_Token_Hint, + Param_Login_Hint, + Param_Max_Age, + Param_Nonce, + Param_Password, + Param_Prompt, + Param_Redirect_Uri, + Param_Refresh_Token, + Param_Response_Type, + Param_Scope, + Param_State, + Param_Token_Type, + Param_Ui_Locales, + Param_Username, + PARAM_COUNT +}; + +#if PARAM_COUNT > 30 +# error "Too much parameters" +#endif +#define PARAM(p) ((uint32_t)((uint32_t)1 << (Param_##p))) + +/* args of authorization requests */ +struct args +{ + struct json_object *appli; + struct json_object *idp; + struct json_object *args; + struct oidc_grant_cb cb; + int locked; + int refresh; + uint32_t mandatory; + uint32_t all; + struct json_object *header; + struct json_object *query; +}; + +/* Release the lock if needed */ +static void args_unlock(struct args *args) +{ + if (!args->locked) { + pthread_rwlock_unlock(&rwlock); + args->locked = 0; + } +} + +/* Release the memory needed by args */ +static void args_destroy(struct args *args) +{ + json_object_put(args->appli); + json_object_put(args->idp); + json_object_put(args->header); + json_object_put(args->query); + free(args); +} + +/* Send the success event with the gained tokens */ +static void args_send_success(struct args *args, struct json_object *result) +{ + args_unlock(args); + args->cb.success(args->cb.closure, result); + args_destroy(args); +} + +/* Sends the error event with the indice to the client of args */ +static void args_send_error(struct args *args, const char *message, const char *indice) +{ + args_unlock(args); + args->cb.error(args->cb.closure, message, indice); + args_destroy(args); +} + +/* Send the error and also return NULL */ +static inline struct args *args_send_error_null(struct args *args, const char *message, const char *indice) +{ + args_send_error(args, message, indice); + return NULL; +} + +/* creates a struct args from the arguments, returns NULL on error */ +struct args *mkargs(const char *appli, const char *idp, struct json_object *args, const struct oidc_grant_cb *cb) +{ + struct args *result; + struct json_object *obj; + + /* allocates the args */ + result = calloc(1, sizeof *result); + if (!result) { + cb->error(cb->closure, "Out of memory", NULL); + return NULL; + } + + /* init of the structure */ + result->cb = *cb; + result->args = args; + result->header = json_object_new_object(); + result->query = json_object_new_object(); + + /* lock in read */ + pthread_rwlock_rdlock(&rwlock); + result->locked = 1; + + /* check previous allocations */ + if (!result->query || !result->header) { + return args_send_error_null(result, "Out of memory", NULL); + } + + /* check whether default idp */ + if (!idp) { + idp = get_default_idp(appli); + if (!idp) + return args_send_error_null(result, "No default IDP", NULL); + } + + /* get the IDP */ + if (!json_object_object_get_ex(idps, idp, &obj)) + return args_send_error_null(result, "Unknown IDP", idp); + result->idp = json_object_get(obj); + + /* get the appli */ + obj = get_appli_idp(appli, idp, NULL); + if (!obj) + return args_send_error_null(result, "Unknown APPLI for IDP", appli); + result->appli = json_object_get(obj); + + return result; +} + +/* get a value for a struct args */ +static struct json_object *args_object(struct args *args, const char *name) +{ + struct json_object *result; + + if (!json_object_object_get_ex(args->appli, name, &result) + && !json_object_object_get_ex(args->idp, name, &result) + && !json_object_object_get_ex(args->args, name, &result)) + result = NULL; + return result; +} + +/* get a string value for a struct args */ +static const char *args_string(struct args *args, const char *name) +{ + struct json_object *object = args_object(args, name); + return object ? json_object_get_string(object) : NULL; +} + +/* add a data */ +static int args_add(struct args *args, uint32_t val, const char *name, int query) +{ + struct json_object *obj, *dest; + + if (val & args->all) { + obj = args_object(args, name); + if (obj) { + dest = query ? args->query : args->header; + json_object_object_add(dest, name, json_object_get(obj)); + } + else if (val & args->mandatory) { + args_send_error(args, "Mandatory field missing", name); + return 0; + } + } + + return 1; +} + +/* + * Makes the CURL object for the given 'url' for either GET or POST depending + * on 'post' with the added 'header' fields and the given query parameters. + * Returns NULL on error. + * Ex: + * + * curl_json("http://iot.bzh/api", 0, {"X-Index": "no"}, {"fast":true,"item":"2345-hellfest"}) + * + * produces the query: + * + * GET /api?fast=true&item=2345-hellfest HTTP/1.1 + * Host: iot.bzh + * X-Index: no + * + * while the same but with post not null produces: + * + * POST /api HTTP/1.1 + * Host: iot.bzh + * X-Index: no + * Content-Type: application/x-www-form-urlencoded + * + * fast=true&item=2345-hellfest + * + */ +static CURL *curl_json(const char *url, int post, struct json_object *header, struct json_object *query) +{ + const char **args, *str; + struct json_object_iter i; + int idx; + CURL *result; + + /* create args array */ + idx = 1 + (json_object_object_length(query) << 1); + args = malloc((unsigned)idx * sizeof *args); + if (!args) + return NULL; + + /* fill the args array */ + args[--idx] = NULL; + json_object_object_foreachC(query, i) { + str = json_object_get_string(i.val); + args[--idx] = str; + args[--idx] = i.key; + } + + /* prepare the query */ + if (post) + result = curl_wrap_prepare_post(url, NULL, args); + else + result = curl_wrap_prepare_get(url, NULL, args); + free(args); + if(!result) + return NULL; + + /* add headers */ + if (header) { + json_object_object_foreachC(header, i) { + str = json_object_get_string(i.val); + if (!curl_wrap_add_header_value(result, i.key, str)) { + curl_easy_cleanup(result); + return NULL; + } + } + } + return result; +} + +/* + * Extract from the answer of 'curl' whose 'content' has 'size' bytes the + * embeded JSON object (if any). + * Returns it or returns NULL if the answer can't be interpreted. + */ +static struct json_object *decode_perform_result(CURL *curl, const char *content, size_t size) +{ + int i; + const char **args; + struct json_object *result; + + /* is it an url encoded answer? */ + if (curl_wrap_content_type_is(curl, "application/x-www-form-urlencoded")) { + /* yes, unescape as an array of strings */ + args = unescape_args(content); + if (!args) + result = NULL; + else { + /* wrap the key=value pairs in an object */ + result = json_object_new_object(); + if (result) { + for (i = 0 ; args[i] ; i += 2) + json_object_object_add(result, args[i], + json_object_new_string(args[i+1])); + } + free(args); + } + } else if (curl_wrap_content_type_is(curl, "application/json")) { + /* interpret the json */ + result = json_tokener_parse (content); + } else { + /* by default, still try to interpret the answer as if json */ + result = json_tokener_parse (content); + } + return result; +} + +/* + * Treats the result of the query 'curl' of 'content' of 'size' bytes for the 'args' + */ +static void perform_result(struct args *args, CURL *curl, const char *content, size_t size) +{ + struct json_object *obj, *at, *tt; + char *txt; + + /* get answer */ + obj = decode_perform_result(curl, content, size); + if (!obj) + return args_send_error(args, "unable to extract answer", content); + + /* process the answer */ + if (json_object_object_get_ex(obj, "access_token", &at) && json_object_object_get_ex(obj, "token_type", &tt)) { + if (!strcmp(json_object_get_string(tt), "bearer")) { + if (asprintf(&txt, "Bearer %s", json_object_get_string(at)) > 0) { + json_object_object_add(obj, "authorization", json_object_new_string(txt)); + free(txt); + } + } + } + + /* merge the answer to the token args in case of refresh */ + if (args->refresh) + j_merge(args->args, obj); + + /* send the answer */ + args_send_success(args, obj); +} + +/* + * Treats the redirect answer of the query 'curl' of 'content' of 'size' bytes for the 'args' + */ +static void perform_redirect(struct args *args, CURL *curl, const char *content, size_t size) +{ + /* TODO: handle redirection for the normal flow */ + return args_send_error(args, "unhandled redirection", content); +} + +/* + * Handle the result of the query 'curl' of 'status'. If a data is returned, it is available in + * 'content' of 'size' bytes. + * When 'status' is 0, an error occured. Otherwise, 'statu' isn't zero. + */ +static void perform_callback(void *closure, int status, CURL *curl, const char *content, size_t size) +{ + long code; + struct args *args = closure; + + /* query error ? */ + if (!status + || curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code) != CURLE_OK) + return args_send_error(args, "query error", NULL); /* TODO: IMPROVE? */ + + /* get the returned code */ + switch (code) { + case 200: + return perform_result(args, curl, content, size); + case 302: + return perform_redirect(args, curl, content, size); + case 400: + case 401: + return args_send_error(args, content ? : "returned code error", content ? "returned code error" : content); + default: + return args_send_error(args, content ? : "unexpected code error", content ? "unexpected code error" : content); + } +} + +/* + * Main function for performing OAuth2/OpenId Connect transactions. + * The structure 'args' is filled with the needed values: + * Application data as json object, IDP data as json object + * Contextual arguments for the transaction. + * 'endpoint' must be the name of an endpoint in the context of 'args'. + * 'operation' is the value that will get either response_type or grant_type, + * depending on the nature of the required parameters 'mandatory'. + * 'mandatory' designates the mandatory parameters. + * 'optional' designate the optional parameters. + */ +static void perform(struct args *args, const char *endpoint, const char *operation, uint32_t mandatory, uint32_t optional) +{ + int post; + const char *url, *type; + CURL *curl; + + /* set the flags */ + args->mandatory = mandatory; + args->all = mandatory | optional; + + /* get the endpoint */ + url = args_string(args, endpoint); + if (!url) + return args_send_error(args, "No endpoint", endpoint); + + /* get the operation type */ + if ((mandatory & PARAM(Response_Type)) == PARAM(Response_Type)) { + type = "response_type"; + post = 0; /* can be 1 sometimes so not risk here */ + } else if ((mandatory & PARAM(Grant_Type)) == PARAM(Grant_Type)) { + type = "grant_type"; + post = 1; /* must be 1 */ + } else + return args_send_error(args, "Unexpected operation Type", NULL); + + json_object_object_add(args->query, type, json_object_new_string(operation)); + + /* get the arguments */ + if (1 + && args_add(args, PARAM(Access_Token), "access_token", 1) + && args_add(args, PARAM(Acr_Values), "acr_values", 1) + && args_add(args, PARAM(Authorization), "authorization", 0) + && args_add(args, PARAM(Client_Id), "client_id", 1) + && args_add(args, PARAM(Client_Secret), "client_secret", 1) + && args_add(args, PARAM(Code), "code", 1) + && args_add(args, PARAM(Display), "display", 1) + && args_add(args, PARAM(Expires_In), "expires_in", 1) + && args_add(args, PARAM(Id_Token_Hint), "id_token_hint", 1) + && args_add(args, PARAM(Login_Hint), "login_hint", 1) + && args_add(args, PARAM(Max_Age), "max_age", 1) + && args_add(args, PARAM(Nonce), "nonce", 1) + && args_add(args, PARAM(Password), "password", 1) + && args_add(args, PARAM(Prompt), "prompt", 1) + && args_add(args, PARAM(Redirect_Uri), "redirect_uri", 1) + && args_add(args, PARAM(Refresh_Token), "refresh_token", 1) + && args_add(args, PARAM(Scope), "scope", 1) + && args_add(args, PARAM(State), "state", 1) + && args_add(args, PARAM(Token_Type), "token_type", 1) + && args_add(args, PARAM(Ui_Locales), "ui_locales", 1) + && args_add(args, PARAM(Username), "username", 1) + ) { + /* creates the curl query */ + curl = curl_json(url, post, args->header, args->query); + if (!curl) + return args_send_error(args, "out of memory", NULL); + + /* release data */ + args_unlock(args); + + /* perform the request to the server */ + curl_wrap_do(curl, perform_callback, args); + } +} + +/* perform a grant of flow Flow_Resource_Owner_Password_Credentials_Grant */ +static void grant_owner_password(struct args *args) +{ + perform(args, string_token_endpoint, "password", + PARAM(Grant_Type) | PARAM(Username) | PARAM(Password), + PARAM(Scope) | PARAM(Authorization) + ); +} + +/* perform a grant of flow Flow_Client_Credentials_Grant */ +static void grant_client_credentials(struct args *args) +{ + perform(args, string_token_endpoint, "client_credentials", + PARAM(Grant_Type), + PARAM(Scope) | PARAM(Authorization) + ); +} + +/* switches the requests depending on 'flow' */ +static void grant(struct args *args, enum oidc_grant_flow flow) +{ + /* ensure args is valid */ + if (!args) + return; + + /* process for flow */ + switch(flow) { + + case Flow_Resource_Owner_Password_Credentials_Grant: + grant_owner_password(args); + break; + + case Flow_Client_Credentials_Grant: + grant_client_credentials(args); + break; + + case Flow_Authorization_Code_Grant: + case Flow_Implicit_Grant: + case Flow_Extension_Grant: + args_send_error(args, "Unsupported flow", NULL); + break; + + case Flow_Invalid: + default: + args_send_error(args, "Invalid flow", NULL); + break; + } +} + +/* + * Initiates a grant with the given 'flow'. + * 'appli' and 'idp' designates the appli and the idp that have been recorded. + * when idp == NULL or idp == "", the default idp of 'appli' is used. + * 'args' contains parameters expected in plus for the grant transaction. + * 'cb' describes the callback actions that are called before + * the function returns. + */ +void oidc_grant(const char *appli, const char *idp, struct json_object *args, const struct oidc_grant_cb *cb, enum oidc_grant_flow flow) +{ + grant(mkargs(appli, idp, args, cb), flow); +} + +/* + * Like oidc_grant for flow Flow_Resource_Owner_Password_Credentials_Grant + */ +void oidc_grant_owner_password(const char *appli, const char *idp, struct json_object *args, const struct oidc_grant_cb *cb) +{ + grant(mkargs(appli, idp, args, cb), Flow_Resource_Owner_Password_Credentials_Grant); +} + +/* + * Like oidc_grant for flow Flow_Client_Credentials_Grant + */ +void oidc_grant_client_credentials(const char *appli, const char *idp, struct json_object *args, const struct oidc_grant_cb *cb) +{ + grant(mkargs(appli, idp, args, cb), Flow_Client_Credentials_Grant); +} + +/* + * Refreshes the 'token' for the 'appli' and the 'idp'. + * 'cb' describes the callback actions that are called before + * the function returns. + */ +void oidc_token_refresh(const char *appli, const char *idp, struct json_object *token, const struct oidc_grant_cb *cb) +{ + struct args *args; + + args = mkargs(appli, idp, token, cb); + if (!args) + return; + args->refresh = 1; + perform(args, string_token_endpoint, "refresh_token", + PARAM(Grant_Type) | PARAM(Refresh_Token), + PARAM(Scope) | PARAM(Authorization) + ); +} + +/* + * Adds the header "authorisation" with the bearer access_token of 'token'. + * Return 1 on case of success or 0 otherwise. + */ +int oidc_add_bearer(CURL *curl, struct json_object *token) +{ + struct json_object *bearer; + + return json_object_object_get_ex(token, "authorization", &bearer) + && curl_wrap_add_header_value(curl, "authorization", json_object_get_string(bearer)); +} + + diff --git a/src/oidc-agent.h b/src/oidc-agent.h new file mode 100644 index 0000000..de5918d --- /dev/null +++ b/src/oidc-agent.h @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +struct json_object; +#include <curl/curl.h> + +/***************** IDP **************************/ + +extern int oidc_idp_set( + const char *name, + struct json_object *desc + ); + +extern int oidc_idp_exists( + const char *name + ); + +extern void oidc_idp_delete( + const char *name + ); + + +/***************** APPLI **************************/ + +extern int oidc_appli_set( + const char *name, + const char *idp, + struct json_object *desc, + int make_default + ); + +extern int oidc_appli_exists( + const char *name + ); + +extern int oidc_appli_has_idp( + const char *name, + const char *idp + ); + +extern int oidc_appli_set_default_idp( + const char *name, + const char *idp + ); + +extern void oidc_appli_delete( + const char *name + ); + +/***************** APPLI **************************/ + +struct oidc_grant_cb +{ + void *closure; + void (*success)(void *closure, struct json_object *result); + void (*error)(void *closure, const char *message, const char *indice); +}; + +enum oidc_grant_flow +{ + Flow_Invalid, + Flow_Authorization_Code_Grant, + Flow_Implicit_Grant, + Flow_Resource_Owner_Password_Credentials_Grant, + Flow_Client_Credentials_Grant, + Flow_Extension_Grant +}; + + +extern void oidc_grant( + const char *appli, + const char *idp, + struct json_object *args, + const struct oidc_grant_cb *cb, + enum oidc_grant_flow flow + ); + +extern void oidc_grant_owner_password( + const char *appli, + const char *idp, + struct json_object *args, + const struct oidc_grant_cb *cb + ); + +extern void oidc_grant_client_credentials( + const char *appli, + const char *idp, + struct json_object *args, + const struct oidc_grant_cb *cb + ); + +extern void oidc_token_refresh( + const char *appli, + const char *idp, + struct json_object *token, + const struct oidc_grant_cb *cb + ); + +extern int oidc_add_bearer( + CURL *curl, + struct json_object *token + ); + diff --git a/src/test-aia-uds-bluez.c b/src/test-aia-uds-bluez.c new file mode 100644 index 0000000..4a084a5 --- /dev/null +++ b/src/test-aia-uds-bluez.c @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2015, 2016, 2017 "IoT.bzh" + * Author: José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> +#include <string.h> +#include <errno.h> + +#include <systemd/sd-bus.h> + +#include "aia-uds-bluez.h" + + +void p(const char *tag, const struct aia_uds_value *value) +{ + printf("%10s %c %.*s\n", tag, value->changed?'*':' ', (int)value->length, value->data); +} + +void onchg(const struct aia_uds *uds) +{ + printf("\n"); + p("first name", &uds->first_name); + p("last name", &uds->last_name); + p("email", &uds->email); + p("language", &uds->language); +} + +int main() +{ + sd_bus *bus; + sd_id128_t id; + int rc; + + aia_uds_set_on_change(onchg); + rc = sd_bus_default_system(&bus); + rc = sd_id128_randomize(&id); + rc = sd_bus_set_server(bus, 1, id); + rc = sd_bus_start(bus); + rc = aia_uds_init(bus); + rc = aia_uds_advise(1, NULL, NULL); + for (;;) { + rc = sd_bus_process(bus, NULL); + if (rc < 0) + break; + else if (rc == 0) + rc = sd_bus_wait(bus, (uint64_t) -1); + } +} + |