--- /dev/null
+/*
+ * Copyright (C) 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
+#define NO_BINDING_VERBOSE_MACRO
+
+#include <string.h>
+#include <dlfcn.h>
+#include <assert.h>
+
+#include <afb/afb-binding.h>
+
+#include "afb-apis.h"
+#include "afb-svc.h"
+#include "afb-evt.h"
+#include "afb-common.h"
+#include "afb-context.h"
+#include "afb-api-so.h"
+#include "afb-thread.h"
+#include "verbose.h"
+
+/*
+ * names of symbols
+ */
+static const char afb_api_so_v1_register[] = "afbBindingV1Register";
+static const char afb_api_so_v1_service_init[] = "afbBindingV1ServiceInit";
+static const char afb_api_so_v1_service_event[] = "afbBindingV1ServiceEvent";
+
+/*
+ * Description of a binding
+ */
+struct api_so_v1 {
+ struct afb_binding *binding; /* descriptor */
+ size_t apilength; /* length of the API name */
+ void *handle; /* context of dlopen */
+ struct afb_svc *service; /* handler for service started */
+ struct afb_binding_interface interface; /* interface for the binding */
+};
+
+static struct afb_event afb_api_so_event_make_cb(void *closure, const char *name);
+static int afb_api_so_event_broadcast_cb(void *closure, const char *name, struct json_object *object);
+static void afb_api_so_vverbose_cb(void *closure, int level, const char *file, int line, const char *fmt, va_list args);
+static int afb_api_so_rootdir_get_fd(void *closure);
+static int afb_api_so_rootdir_open_locale(void *closure, const char *filename, int flags, const char *locale);
+
+static const struct afb_daemon_itf daemon_itf = {
+ .event_broadcast = afb_api_so_event_broadcast_cb,
+ .get_event_loop = afb_common_get_event_loop,
+ .get_user_bus = afb_common_get_user_bus,
+ .get_system_bus = afb_common_get_system_bus,
+ .vverbose = afb_api_so_vverbose_cb,
+ .event_make = afb_api_so_event_make_cb,
+ .rootdir_get_fd = afb_api_so_rootdir_get_fd,
+ .rootdir_open_locale = afb_api_so_rootdir_open_locale
+};
+
+static struct afb_event afb_api_so_event_make_cb(void *closure, const char *name)
+{
+ size_t length;
+ char *event;
+ struct api_so_v1 *desc = closure;
+
+ /* makes the event name */
+ assert(desc->binding != NULL);
+ length = strlen(name);
+ event = alloca(length + 2 + desc->apilength);
+ memcpy(event, desc->binding->v1.prefix, desc->apilength);
+ event[desc->apilength] = '/';
+ memcpy(event + desc->apilength + 1, name, length + 1);
+
+ /* crate the event */
+ return afb_evt_create_event(event);
+}
+
+static int afb_api_so_event_broadcast_cb(void *closure, const char *name, struct json_object *object)
+{
+ size_t length;
+ char *event;
+ struct api_so_v1 *desc = closure;
+
+ /* makes the event name */
+ assert(desc->binding != NULL);
+ length = strlen(name);
+ event = alloca(length + 2 + desc->apilength);
+ memcpy(event, desc->binding->v1.prefix, desc->apilength);
+ event[desc->apilength] = '/';
+ memcpy(event + desc->apilength + 1, name, length + 1);
+
+ return afb_evt_broadcast(event, object);
+}
+
+static void afb_api_so_vverbose_cb(void *closure, int level, const char *file, int line, const char *fmt, va_list args)
+{
+ char *p;
+ struct api_so_v1 *desc = closure;
+
+ if (vasprintf(&p, fmt, args) < 0)
+ vverbose(level, file, line, fmt, args);
+ else {
+ verbose(level, file, line, "%s {binding %s}", p, desc->binding->v1.prefix);
+ free(p);
+ }
+}
+
+static int afb_api_so_rootdir_get_fd(void *closure)
+{
+ return afb_common_rootdir_get_fd();
+}
+
+static int afb_api_so_rootdir_open_locale(void *closure, const char *filename, int flags, const char *locale)
+{
+ return afb_common_rootdir_open_locale(filename, flags, locale);
+}
+
+static int call_check(struct afb_req req, struct afb_context *context, const struct afb_verb_desc_v1 *verb)
+{
+ int stag = (int)verb->session;
+
+ if ((stag & (AFB_SESSION_CREATE|AFB_SESSION_CLOSE|AFB_SESSION_RENEW|AFB_SESSION_CHECK|AFB_SESSION_LOA_EQ)) != 0) {
+ if (!afb_context_check(context)) {
+ afb_context_close(context);
+ afb_req_fail(req, "failed", "invalid token's identity");
+ return 0;
+ }
+ }
+
+ if ((stag & AFB_SESSION_CREATE) != 0) {
+ if (afb_context_check_loa(context, 1)) {
+ afb_req_fail(req, "failed", "invalid creation state");
+ return 0;
+ }
+ afb_context_change_loa(context, 1);
+ afb_context_refresh(context);
+ }
+
+ if ((stag & (AFB_SESSION_CREATE | AFB_SESSION_RENEW)) != 0)
+ afb_context_refresh(context);
+
+ if ((stag & AFB_SESSION_CLOSE) != 0) {
+ afb_context_change_loa(context, 0);
+ afb_context_close(context);
+ }
+
+ if ((stag & AFB_SESSION_LOA_GE) != 0) {
+ int loa = (stag >> AFB_SESSION_LOA_SHIFT) & AFB_SESSION_LOA_MASK;
+ if (!afb_context_check_loa(context, loa)) {
+ afb_req_fail(req, "failed", "invalid LOA");
+ return 0;
+ }
+ }
+
+ if ((stag & AFB_SESSION_LOA_LE) != 0) {
+ int loa = (stag >> AFB_SESSION_LOA_SHIFT) & AFB_SESSION_LOA_MASK;
+ if (afb_context_check_loa(context, loa + 1)) {
+ afb_req_fail(req, "failed", "invalid LOA");
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static void call_cb(void *closure, struct afb_req req, struct afb_context *context, const char *strverb)
+{
+ const struct afb_verb_desc_v1 *verb;
+ struct api_so_v1 *desc = closure;
+
+ verb = desc->binding->v1.verbs;
+ while (verb->name && strcasecmp(verb->name, strverb))
+ verb++;
+ if (!verb->name)
+ afb_req_fail_f(req, "unknown-verb", "verb %s unknown within api %s", strverb, desc->binding->v1.prefix);
+ else if (call_check(req, context, verb)) {
+ afb_thread_req_call(req, verb->callback, afb_api_so_timeout, desc);
+ }
+}
+
+static int service_start_cb(void *closure, int share_session, int onneed)
+{
+ int (*init)(struct afb_service service);
+ void (*onevent)(const char *event, struct json_object *object);
+
+ struct api_so_v1 *desc = closure;
+
+ /* check state */
+ if (desc->service != NULL) {
+ /* not an error when onneed */
+ if (onneed != 0)
+ return 0;
+
+ /* already started: it is an error */
+ ERROR("Service %s already started", desc->binding->v1.prefix);
+ return -1;
+ }
+
+ /* get the initialisation */
+ init = dlsym(desc->handle, afb_api_so_v1_service_init);
+ if (init == NULL) {
+ /* not an error when onneed */
+ if (onneed != 0)
+ return 0;
+
+ /* no initialisation method */
+ ERROR("Binding %s is not a service", desc->binding->v1.prefix);
+ return -1;
+ }
+
+ /* get the event handler if any */
+ onevent = dlsym(desc->handle, afb_api_so_v1_service_event);
+ desc->service = afb_svc_create(share_session, init, onevent);
+ if (desc->service == NULL) {
+ /* starting error */
+ ERROR("Starting service %s failed", desc->binding->v1.prefix);
+ return -1;
+ }
+
+ return 0;
+}
+
+int afb_api_so_v1_add(const char *path, void *handle)
+{
+ struct api_so_v1 *desc;
+ struct afb_binding *(*register_function) (const struct afb_binding_interface *interface);
+ struct afb_verb_desc_v1 fake_verb;
+ struct afb_binding fake_binding;
+
+ /* retrieves the register function */
+ register_function = dlsym(handle, afb_api_so_v1_register);
+ if (!register_function)
+ return 0;
+ INFO("binding [%s] is a valid AFB binding V1", path);
+
+ /* allocates the description */
+ desc = calloc(1, sizeof *desc);
+ if (desc == NULL) {
+ ERROR("out of memory");
+ goto error;
+ }
+ desc->handle = handle;
+
+ /* init the interface */
+ desc->interface.verbosity = verbosity;
+ desc->interface.mode = AFB_MODE_LOCAL;
+ desc->interface.daemon.itf = &daemon_itf;
+ desc->interface.daemon.closure = desc;
+
+ /* for log purpose, a fake binding is needed here */
+ desc->binding = &fake_binding;
+ fake_binding.type = AFB_BINDING_VERSION_1;
+ fake_binding.v1.info = path;
+ fake_binding.v1.prefix = path;
+ fake_binding.v1.verbs = &fake_verb;
+ fake_verb.name = NULL;
+
+ /* init the binding */
+ NOTICE("binding [%s] calling registering function %s", path, afb_api_so_v1_register);
+ desc->binding = register_function(&desc->interface);
+ if (desc->binding == NULL) {
+ ERROR("binding [%s] register function failed. continuing...", path);
+ goto error2;
+ }
+
+ /* check the returned structure */
+ if (desc->binding->type != AFB_BINDING_VERSION_1) {
+ ERROR("binding [%s] invalid type %d...", path, desc->binding->type);
+ goto error2;
+ }
+ if (desc->binding->v1.prefix == NULL || *desc->binding->v1.prefix == 0) {
+ ERROR("binding [%s] bad prefix...", path);
+ goto error2;
+ }
+ if (!afb_apis_is_valid_api_name(desc->binding->v1.prefix)) {
+ ERROR("binding [%s] invalid prefix...", path);
+ goto error2;
+ }
+ if (desc->binding->v1.info == NULL || *desc->binding->v1.info == 0) {
+ ERROR("binding [%s] bad description...", path);
+ goto error2;
+ }
+ if (desc->binding->v1.verbs == NULL) {
+ ERROR("binding [%s] no APIs...", path);
+ goto error2;
+ }
+
+ /* records the binding */
+ desc->apilength = strlen(desc->binding->v1.prefix);
+ if (afb_apis_add(desc->binding->v1.prefix, (struct afb_api){
+ .closure = desc,
+ .call = call_cb,
+ .service_start = service_start_cb }) < 0) {
+ ERROR("binding [%s] can't be registered...", path);
+ goto error2;
+ }
+ NOTICE("binding %s loaded with API prefix %s", path, desc->binding->v1.prefix);
+ return 1;
+
+error2:
+ free(desc);
+error:
+ return -1;
+}
+
#define NO_BINDING_VERBOSE_MACRO
#include <stdio.h>
-#include <assert.h>
+#include <dlfcn.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
-#include <dlfcn.h>
-#include <unistd.h>
-#include <limits.h>
-#include <sys/types.h>
#include <sys/stat.h>
-#include <afb/afb-binding.h>
-#include <afb/afb-req-itf.h>
-#include <afb/afb-event-itf.h>
-
-#include "afb-session.h"
-#include "afb-common.h"
-#include "afb-context.h"
-#include "afb-apis.h"
#include "afb-api-so.h"
-#include "afb-thread.h"
-#include "afb-evt.h"
-#include "afb-svc.h"
+#include "afb-api-so-v1.h"
#include "verbose.h"
-/*
- * Description of a binding
- */
-struct api_so_desc {
- struct afb_binding *binding; /* descriptor */
- size_t apilength; /* length of the API name */
- void *handle; /* context of dlopen */
- struct afb_svc *service; /* handler for service started */
- struct afb_binding_interface interface; /* interface for the binding */
-};
-
-static const char binding_register_function_v1[] = "afbBindingV1Register";
-static const char binding_service_init_function_v1[] = "afbBindingV1ServiceInit";
-static const char binding_service_event_function_v1[] = "afbBindingV1ServiceEvent";
-
-static int api_timeout = 15;
-
-static struct afb_event afb_api_so_event_make_cb(void *closure, const char *name);
-static int afb_api_so_event_broadcast_cb(void *closure, const char *name, struct json_object *object);
-static void afb_api_so_vverbose_cb(void *closure, int level, const char *file, int line, const char *fmt, va_list args);
-static int afb_api_so_rootdir_get_fd(void *closure);
-static int afb_api_so_rootdir_open_locale(void *closure, const char *filename, int flags, const char *locale);
-
-static const struct afb_daemon_itf daemon_itf = {
- .event_broadcast = afb_api_so_event_broadcast_cb,
- .get_event_loop = afb_common_get_event_loop,
- .get_user_bus = afb_common_get_user_bus,
- .get_system_bus = afb_common_get_system_bus,
- .vverbose = afb_api_so_vverbose_cb,
- .event_make = afb_api_so_event_make_cb,
- .rootdir_get_fd = afb_api_so_rootdir_get_fd,
- .rootdir_open_locale = afb_api_so_rootdir_open_locale
-};
-
-static struct afb_event afb_api_so_event_make_cb(void *closure, const char *name)
-{
- size_t length;
- char *event;
- struct api_so_desc *desc = closure;
-
- /* makes the event name */
- assert(desc->binding != NULL);
- length = strlen(name);
- event = alloca(length + 2 + desc->apilength);
- memcpy(event, desc->binding->v1.prefix, desc->apilength);
- event[desc->apilength] = '/';
- memcpy(event + desc->apilength + 1, name, length + 1);
-
- /* crate the event */
- return afb_evt_create_event(event);
-}
-
-static int afb_api_so_event_broadcast_cb(void *closure, const char *name, struct json_object *object)
-{
- size_t length;
- char *event;
- struct api_so_desc *desc = closure;
-
- /* makes the event name */
- assert(desc->binding != NULL);
- length = strlen(name);
- event = alloca(length + 2 + desc->apilength);
- memcpy(event, desc->binding->v1.prefix, desc->apilength);
- event[desc->apilength] = '/';
- memcpy(event + desc->apilength + 1, name, length + 1);
-
- return afb_evt_broadcast(event, object);
-}
-
-static void afb_api_so_vverbose_cb(void *closure, int level, const char *file, int line, const char *fmt, va_list args)
-{
- char *p;
- struct api_so_desc *desc = closure;
-
- if (vasprintf(&p, fmt, args) < 0)
- vverbose(level, file, line, fmt, args);
- else {
- verbose(level, file, line, "%s {binding %s}", p, desc->binding->v1.prefix);
- free(p);
- }
-}
-
-static int afb_api_so_rootdir_get_fd(void *closure)
-{
- return afb_common_rootdir_get_fd();
-}
-
-static int afb_api_so_rootdir_open_locale(void *closure, const char *filename, int flags, const char *locale)
-{
- return afb_common_rootdir_open_locale(filename, flags, locale);
-}
-
-static int call_check(struct afb_req req, struct afb_context *context, const struct afb_verb_desc_v1 *verb)
-{
- int stag = (int)verb->session;
-
- if ((stag & (AFB_SESSION_CREATE|AFB_SESSION_CLOSE|AFB_SESSION_RENEW|AFB_SESSION_CHECK|AFB_SESSION_LOA_EQ)) != 0) {
- if (!afb_context_check(context)) {
- afb_context_close(context);
- afb_req_fail(req, "failed", "invalid token's identity");
- return 0;
- }
- }
-
- if ((stag & AFB_SESSION_CREATE) != 0) {
- if (afb_context_check_loa(context, 1)) {
- afb_req_fail(req, "failed", "invalid creation state");
- return 0;
- }
- afb_context_change_loa(context, 1);
- afb_context_refresh(context);
- }
-
- if ((stag & (AFB_SESSION_CREATE | AFB_SESSION_RENEW)) != 0)
- afb_context_refresh(context);
-
- if ((stag & AFB_SESSION_CLOSE) != 0) {
- afb_context_change_loa(context, 0);
- afb_context_close(context);
- }
-
- if ((stag & AFB_SESSION_LOA_GE) != 0) {
- int loa = (stag >> AFB_SESSION_LOA_SHIFT) & AFB_SESSION_LOA_MASK;
- if (!afb_context_check_loa(context, loa)) {
- afb_req_fail(req, "failed", "invalid LOA");
- return 0;
- }
- }
-
- if ((stag & AFB_SESSION_LOA_LE) != 0) {
- int loa = (stag >> AFB_SESSION_LOA_SHIFT) & AFB_SESSION_LOA_MASK;
- if (afb_context_check_loa(context, loa + 1)) {
- afb_req_fail(req, "failed", "invalid LOA");
- return 0;
- }
- }
- return 1;
-}
-
-static void call_cb(void *closure, struct afb_req req, struct afb_context *context, const char *strverb)
-{
- const struct afb_verb_desc_v1 *verb;
- struct api_so_desc *desc = closure;
-
- verb = desc->binding->v1.verbs;
- while (verb->name && strcasecmp(verb->name, strverb))
- verb++;
- if (!verb->name)
- afb_req_fail_f(req, "unknown-verb", "verb %s unknown within api %s", strverb, desc->binding->v1.prefix);
- else if (call_check(req, context, verb)) {
- afb_thread_req_call(req, verb->callback, api_timeout, desc);
- }
-}
-
-static int service_start_cb(void *closure, int share_session, int onneed)
-{
- int (*init)(struct afb_service service);
- void (*onevent)(const char *event, struct json_object *object);
-
- struct api_so_desc *desc = closure;
-
- /* check state */
- if (desc->service != NULL) {
- /* not an error when onneed */
- if (onneed != 0)
- return 0;
-
- /* already started: it is an error */
- ERROR("Service %s already started", desc->binding->v1.prefix);
- return -1;
- }
-
- /* get the initialisation */
- init = dlsym(desc->handle, binding_service_init_function_v1);
- if (init == NULL) {
- /* not an error when onneed */
- if (onneed != 0)
- return 0;
-
- /* no initialisation method */
- ERROR("Binding %s is not a service", desc->binding->v1.prefix);
- return -1;
- }
-
- /* get the event handler if any */
- onevent = dlsym(desc->handle, binding_service_event_function_v1);
- desc->service = afb_svc_create(share_session, init, onevent);
- if (desc->service == NULL) {
- /* starting error */
- ERROR("Starting service %s failed", desc->binding->v1.prefix);
- return -1;
- }
-
- return 0;
-}
+int afb_api_so_timeout = 15;
void afb_api_so_set_timeout(int to)
{
- api_timeout = to;
+ afb_api_so_timeout = to;
}
-int afb_api_so_add_binding(const char *path)
+static int load_binding(const char *path, int force)
{
int rc;
void *handle;
- struct api_so_desc *desc;
- struct afb_binding *(*register_function) (const struct afb_binding_interface *interface);
- struct afb_verb_desc_v1 fake_verb;
- struct afb_binding fake_binding;
// This is a loadable library let's check if it's a binding
- rc = 0;
+ rc = -!!force;
handle = dlopen(path, RTLD_NOW | RTLD_LOCAL);
if (handle == NULL) {
- ERROR("binding [%s] not loadable: %s", path, dlerror());
+ if (force)
+ ERROR("binding [%s] not loadable: %s", path, dlerror());
+ else
+ INFO("binding [%s] not loadable: %s", path, dlerror());
goto error;
}
/* retrieves the register function */
- register_function = dlsym(handle, binding_register_function_v1);
- if (!register_function) {
- ERROR("binding [%s] is not an AFB binding", path);
+ rc = afb_api_so_v1_add(path, handle);
+ if (rc < 0) {
+ /* error when loading a valid v& binding */
goto error2;
}
- INFO("binding [%s] is a valid AFB binding", path);
- rc = -1;
-
- /* allocates the description */
- desc = calloc(1, sizeof *desc);
- if (desc == NULL) {
- ERROR("out of memory");
+ if (rc == 0) {
+ /* not a v1 binding */
+ if (force)
+ ERROR("binding [%s] is not an AFB binding", path);
+ else
+ INFO("binding [%s] is not an AFB binding", path);
goto error2;
}
- desc->handle = handle;
-
- /* init the interface */
- desc->interface.verbosity = verbosity;
- desc->interface.mode = AFB_MODE_LOCAL;
- desc->interface.daemon.itf = &daemon_itf;
- desc->interface.daemon.closure = desc;
-
- /* for log purpose, a fake binding is needed here */
- desc->binding = &fake_binding;
- fake_binding.type = AFB_BINDING_VERSION_1;
- fake_binding.v1.info = path;
- fake_binding.v1.prefix = path;
- fake_binding.v1.verbs = &fake_verb;
- fake_verb.name = NULL;
-
- /* init the binding */
- NOTICE("binding [%s] calling registering function %s", path, binding_register_function_v1);
- desc->binding = register_function(&desc->interface);
- if (desc->binding == NULL) {
- ERROR("binding [%s] register function failed. continuing...", path);
- goto error3;
- }
-
- /* check the returned structure */
- if (desc->binding->type != AFB_BINDING_VERSION_1) {
- ERROR("binding [%s] invalid type %d...", path, desc->binding->type);
- goto error3;
- }
- if (desc->binding->v1.prefix == NULL || *desc->binding->v1.prefix == 0) {
- ERROR("binding [%s] bad prefix...", path);
- goto error3;
- }
- if (!afb_apis_is_valid_api_name(desc->binding->v1.prefix)) {
- ERROR("binding [%s] invalid prefix...", path);
- goto error3;
- }
- if (desc->binding->v1.info == NULL || *desc->binding->v1.info == 0) {
- ERROR("binding [%s] bad description...", path);
- goto error3;
- }
- if (desc->binding->v1.verbs == NULL) {
- ERROR("binding [%s] no APIs...", path);
- goto error3;
- }
-
- /* records the binding */
- desc->apilength = strlen(desc->binding->v1.prefix);
- if (afb_apis_add(desc->binding->v1.prefix, (struct afb_api){
- .closure = desc,
- .call = call_cb,
- .service_start = service_start_cb }) < 0) {
- ERROR("binding [%s] can't be registered...", path);
- goto error3;
- }
- NOTICE("binding %s loaded with API prefix %s", path, desc->binding->v1.prefix);
return 0;
-error3:
- free(desc);
error2:
dlclose(handle);
error:
return rc;
}
+
+int afb_api_so_add_binding(const char *path)
+{
+ return load_binding(path, 1);
+}
+
static int adddirs(char path[PATH_MAX], size_t end)
{
DIR *dir;
if (memcmp(&dent->d_name[len - 3], ".so", 4))
continue;
memcpy(&path[end], dent->d_name, len+1);
- if (afb_api_so_add_binding(path) < 0)
+ if (load_binding(path, 0) < 0)
return -1;
}
}
else if (S_ISDIR(st.st_mode))
rc = afb_api_so_add_directory(path);
else if (strstr(path, ".so"))
- rc = afb_api_so_add_binding(path);
+ rc = load_binding(path, 0);
else
INFO("not a binding [%s], skipped", path);
return rc;
Code Review / src / app-framework-binder.git / commitdiff