afb-export: record apiset at creation
[src/app-framework-binder.git] / src / afb-api-so-v2.c
index 1207474..edc31d5 100644 (file)
  */
 
 #define _GNU_SOURCE
-#define NO_BINDING_VERBOSE_MACRO
 
+#include <stdlib.h>
 #include <string.h>
 #include <dlfcn.h>
 #include <assert.h>
 
-#include <afb/afb-binding.h>
+#include <afb/afb-binding-v2.h>
 #include <json-c/json.h>
 
 #include "afb-api.h"
+#include "afb-api-so-v2.h"
 #include "afb-apiset.h"
-#include "afb-svc.h"
-#include "afb-ditf.h"
+#include "afb-auth.h"
+#include "afb-export.h"
 #include "afb-evt.h"
-#include "afb-common.h"
 #include "afb-context.h"
 #include "afb-api-so.h"
 #include "afb-xreq.h"
-#include "afb-perm.h"
 #include "verbose.h"
 
 /*
  * names of symbols
  */
 static const char afb_api_so_v2_descriptor[] = "afbBindingV2";
-
-/**
- * structure for memorizing verbs sorted with permissions
- */
-struct verb_v2 {
-       const struct afb_verb_v2 *verb;
-       struct afb_perm *perm;
-};
+static const char afb_api_so_v2_data[] = "afbBindingV2data";
 
 /*
  * Description of a binding
  */
 struct api_so_v2 {
        const struct afb_binding_v2 *binding;   /* descriptor */
-       void *handle;                   /* context of dlopen */
-       struct afb_svc *service;        /* handler for service started */
-       struct afb_ditf ditf;           /* daemon interface */
-       int count;
-       struct verb_v2 verbs[1];
+       void *handle;                           /* context of dlopen */
+       struct afb_export *export;              /* exportations */
 };
 
-static const struct afb_verb_v2 *search(struct api_so_v2 *desc, const char *verb)
+static const struct afb_verb_v2 *search(struct api_so_v2 *desc, const char *name)
 {
-       const struct afb_verb_v2 *v;
-       int i, l, u, c;
-
-       l = 0;
-       u = desc->count;
-       while (l < u) {
-               i = (l + u) >> 1;
-               v = desc->verbs[i].verb;
-               c = strcasecmp(v->verb, verb);
-               if (c == 0)
-                       return v;
-               if (c < 0)
-                       l = i + 1;
-               else
-                       u = i;
-       }
+       const struct afb_verb_v2 *verb;
+
+       verb = desc->binding->verbs;
+       while (verb->verb && strcasecmp(verb->verb, name))
+               verb++;
+       return verb->verb ? verb : NULL;
        return NULL;
 }
 
@@ -89,77 +68,81 @@ static void call_cb(void *closure, struct afb_xreq *xreq)
        const struct afb_verb_v2 *verb;
 
        verb = search(desc, xreq->verb);
-       if (!verb)
-               afb_xreq_fail_unknown_verb(xreq);
-       else
-               if (!xreq_session_check_apply(xreq, verb->session))
-                       afb_xreq_call(xreq, verb->callback);
+       afb_xreq_call_verb_v2(xreq, verb);
 }
 
 static int service_start_cb(void *closure, int share_session, int onneed, struct afb_apiset *apiset)
 {
-       int (*start)(const struct afb_binding_interface *interface, struct afb_service service);
-       void (*onevent)(const char *event, struct json_object *object);
-
        struct api_so_v2 *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->api);
-               return -1;
-       }
-
-       /* get the initialisation */
-       start = desc->binding->start;
-       if (start == NULL) {
-               /* not an error when onneed */
-               if (onneed != 0)
-                       return 0;
-
-               /* no initialisation method */
-               ERROR("Binding %s is not a service", desc->binding->api);
-               return -1;
-       }
-
-       /* get the event handler if any */
-       onevent = desc->binding->onevent;
-       desc->service = afb_svc_create_v2(apiset, share_session, onevent, start, &desc->ditf.interface);
-       if (desc->service == NULL) {
-               /* starting error */
-               ERROR("Starting service %s failed", desc->binding->api);
-               return -1;
-       }
-
-       return 0;
+       return afb_export_start(desc->export, share_session, onneed, apiset);
 }
 
 static void update_hooks_cb(void *closure)
 {
        struct api_so_v2 *desc = closure;
-       afb_ditf_update_hook(&desc->ditf);
+       afb_export_update_hook(desc->export);
 }
 
 static int get_verbosity_cb(void *closure)
 {
        struct api_so_v2 *desc = closure;
-       return desc->ditf.interface.verbosity;
+       return afb_export_verbosity_get(desc->export);
 }
 
 static void set_verbosity_cb(void *closure, int level)
 {
        struct api_so_v2 *desc = closure;
-       desc->ditf.interface.verbosity = level;
+       afb_export_verbosity_set(desc->export, level);
+}
+
+static struct json_object *make_description_openAPIv3(struct api_so_v2 *desc)
+{
+       char buffer[256];
+       const struct afb_verb_v2 *verb;
+       struct json_object *r, *f, *a, *i, *p, *g;
+
+       r = json_object_new_object();
+       json_object_object_add(r, "openapi", json_object_new_string("3.0.0"));
+
+       i = json_object_new_object();
+       json_object_object_add(r, "info", i);
+       json_object_object_add(i, "title", json_object_new_string(afb_export_apiname(desc->export)));
+       json_object_object_add(i, "version", json_object_new_string("0.0.0"));
+       json_object_object_add(i, "description", json_object_new_string(desc->binding->info ?: afb_export_apiname(desc->export)));
+
+       p = json_object_new_object();
+       json_object_object_add(r, "paths", p);
+       verb = desc->binding->verbs;
+       while (verb->verb) {
+               buffer[0] = '/';
+               strncpy(buffer + 1, verb->verb, sizeof buffer - 1);
+               buffer[sizeof buffer - 1] = 0;
+               f = json_object_new_object();
+               json_object_object_add(p, buffer, f);
+               g = json_object_new_object();
+               json_object_object_add(f, "get", g);
+
+               a = afb_auth_json_v2(verb->auth, verb->session);
+               if (a)
+                       json_object_object_add(g, "x-permissions", a);
+
+               a = json_object_new_object();
+               json_object_object_add(g, "responses", a);
+               f = json_object_new_object();
+               json_object_object_add(a, "200", f);
+               json_object_object_add(f, "description", json_object_new_string(verb->info?:verb->verb));
+               verb++;
+       }
+       return r;
 }
 
 static struct json_object *describe_cb(void *closure)
 {
        struct api_so_v2 *desc = closure;
-       return desc->binding->specification ? json_tokener_parse(desc->binding->specification) : NULL;
+       struct json_object *r = desc->binding->specification ? json_tokener_parse(desc->binding->specification) : NULL;
+       if (!r)
+               r = make_description_openAPIv3(desc);
+       return r;
 }
 
 static struct afb_api_itf so_v2_api_itf = {
@@ -169,109 +152,79 @@ static struct afb_api_itf so_v2_api_itf = {
        .get_verbosity = get_verbosity_cb,
        .set_verbosity = set_verbosity_cb,
        .describe = describe_cb
-
 };
 
-int afb_api_so_v2_add_binding(const struct afb_binding_v2 *binding, void *handle, struct afb_apiset *apiset)
+int afb_api_so_v2_add_binding(const struct afb_binding_v2 *binding, void *handle, struct afb_apiset *apiset, struct afb_binding_data_v2 *data)
 {
        int rc;
        struct api_so_v2 *desc;
        struct afb_api afb_api;
-       const struct afb_verb_v2 *bv;
-       int count, i, j;
+       struct afb_export *export;
 
        /* basic checks */
+       assert(binding);
        assert(binding->api);
-       assert(binding->specification);
        assert(binding->verbs);
-
-       /* count the verbs */
-       count = 0;
-       while (binding->verbs[count].verb)
-               count++;
+       assert(data);
 
        /* allocates the description */
-       desc = malloc(sizeof *desc + (count - 1) * sizeof desc->verbs);
-       if (desc == NULL) {
+       export = afb_export_create_v2(apiset, binding->api, data, binding->init, binding->onevent);
+       desc = calloc(1, sizeof *desc);
+       if (!desc || !export) {
                ERROR("out of memory");
                goto error;
        }
        desc->binding = binding;
        desc->handle = handle;
-       desc->service = NULL;
-       memset(&desc->ditf, 0, sizeof desc->ditf);
-       desc->count = count;
-
-       /* fill the verbs sorted */
-       for (i = 0 ; i < count ; i++) {
-               desc->verbs[i].perm = NULL;
-               j = i;
-               bv = &binding->verbs[j];
-               while (j && strcasecmp(bv->verb, desc->verbs[j-1].verb->verb) < 0) {
-                       desc->verbs[j].verb = desc->verbs[j-1].verb;
-                       j--;
-               }
-               desc->verbs[j].verb = bv;
-       }
-
-       /* makes the permissions */
-       for (i = 0 ; i < count ; i++) {
-               if (desc->verbs[i].verb->permissions) {
-                       desc->verbs[i].perm = afb_perm_parse(desc->verbs[i].verb->permissions);
-                       if (!desc->verbs[i].perm) {
-                               ERROR("Bad permission specification for verb %s of api %s: %s",
-                                       desc->verbs[i].verb->verb, binding->api,
-                                       desc->verbs[i].verb->permissions);
-                               goto error2;
-                       }
-               }
-       }
-
-       /* init the interface */
-       afb_ditf_init(&desc->ditf, binding->api);
+       desc->export = export;
 
        /* init the binding */
-       if (binding->init) {
-               INFO("binding %s calling init function", binding->api);
-               rc = binding->init(&desc->ditf.interface);
+       if (binding->preinit) {
+               INFO("binding %s calling preinit function", binding->api);
+               rc = binding->preinit();
                if (rc < 0) {
-                       ERROR("binding %s initialisation function failed...", binding->api);
-                       goto error2;
+                       ERROR("binding %s preinit function failed...", afb_export_apiname(desc->export));
+                       goto error;
                }
        }
 
        /* records the binding */
        afb_api.closure = desc;
        afb_api.itf = &so_v2_api_itf;
-       if (afb_apiset_add(apiset, binding->api, afb_api) < 0) {
-               ERROR("binding %s can't be registered to set %s...", binding->api, afb_apiset_name(apiset));
-               goto error2;
+       afb_api.group = binding->noconcurrency ? export : NULL;
+       if (afb_apiset_add(apiset, afb_export_apiname(desc->export), afb_api) < 0) {
+               ERROR("binding %s can't be registered to set %s...", afb_export_apiname(desc->export), afb_apiset_name(apiset));
+               goto error;
        }
-       NOTICE("binding %s added to set %s", binding->api, afb_apiset_name(apiset));
+       INFO("binding %s added to set %s", afb_export_apiname(desc->export), afb_apiset_name(apiset));
        return 1;
 
-error2:
-       count = desc->count;
-       while (count)
-               if (desc->verbs[--count].perm)
-                       afb_perm_unref(desc->verbs[count].perm);
-       free(desc);
 error:
+       afb_export_destroy(export);
+       free(desc);
+
        return -1;
 }
 
 int afb_api_so_v2_add(const char *path, void *handle, struct afb_apiset *apiset)
 {
        const struct afb_binding_v2 *binding;
+       struct afb_binding_data_v2 *data;
 
        /* retrieves the register function */
        binding = dlsym(handle, afb_api_so_v2_descriptor);
-       if (!binding)
+       data = dlsym(handle, afb_api_so_v2_data);
+       if (!binding && !data)
                return 0;
 
        INFO("binding [%s] looks like an AFB binding V2", path);
 
        /* basic checks */
+       if (!binding || !data) {
+               ERROR("binding [%s] incomplete symbol set: %s is missing",
+                       path, binding ? afb_api_so_v2_data : afb_api_so_v2_descriptor);
+               goto error;
+       }
        if (binding->api == NULL || *binding->api == 0) {
                ERROR("binding [%s] bad api name...", path);
                goto error;
@@ -280,16 +233,18 @@ int afb_api_so_v2_add(const char *path, void *handle, struct afb_apiset *apiset)
                ERROR("binding [%s] invalid api name...", path);
                goto error;
        }
+#if 0
        if (binding->specification == NULL || *binding->specification == 0) {
                ERROR("binding [%s] bad specification...", path);
                goto error;
        }
+#endif
        if (binding->verbs == NULL) {
                ERROR("binding [%s] no verbs...", path);
                goto error;
        }
 
-       return afb_api_so_v2_add_binding(binding, handle, apiset);
+       return afb_api_so_v2_add_binding(binding, handle, apiset, data);
 
  error:
        return -1;