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-rw-r--r--include/proto-def.h4
-rw-r--r--src/CMakeLists.txt3
-rw-r--r--src/afb-api.c634
-rw-r--r--src/afb-hreq.h1
-rw-r--r--src/afb-plugins.c242
-rw-r--r--src/afb-plugins.h30
-rw-r--r--src/afb-req-itf.h16
-rw-r--r--src/afb-websock.c79
-rw-r--r--src/afb-websock.h21
-rw-r--r--src/http-svc.c81
-rw-r--r--src/main.c1
-rw-r--r--src/rest-api.c668
12 files changed, 1044 insertions, 736 deletions
diff --git a/include/proto-def.h b/include/proto-def.h
index 877fafe9..e96b0229 100644
--- a/include/proto-def.h
+++ b/include/proto-def.h
@@ -38,10 +38,6 @@ extern void endPostRequest(AFB_PostHandle *posthandle);
extern int doRestApi(struct MHD_Connection *connection, AFB_session *session, const char* url, const char *method
, const char *upload_data, size_t *upload_data_size, void **con_cls);
-extern void initPlugins (AFB_session *session);
-
-extern AFB_plugin* pluginRegister ();
-
// Session handling
#if defined(ALLOWS_SESSION_FILES)
extern AFB_error sessionCheckdir (AFB_session *session);
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 605a0df1..6eeb431d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -3,7 +3,8 @@ ADD_LIBRARY(src OBJECT
main.c
session.c
http-svc.c
- rest-api.c
+ afb-api.c
+ afb-plugins.c
afb-method.c
afb-hreq.c
afb-websock.c
diff --git a/src/afb-api.c b/src/afb-api.c
new file mode 100644
index 00000000..a3ff07fd
--- /dev/null
+++ b/src/afb-api.c
@@ -0,0 +1,634 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author "Fulup Ar Foll"
+ * Author José Bollo <jose.bollo@iot.bzh>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Contain all generic part to handle REST/API
+ *
+ * https://www.gnu.org/software/libmicrohttpd/tutorial.html [search 'largepost.c']
+ */
+
+#define _GNU_SOURCE
+
+#include "../include/local-def.h"
+
+#include <dirent.h>
+#include <dlfcn.h>
+#include <setjmp.h>
+#include <signal.h>
+
+#define AFB_MSG_JTYPE "AJB_reply"
+
+#define JSON_CONTENT "application/json"
+#define FORM_CONTENT "multipart/form-data" /* TODO: replace with MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA */
+
+static json_object *afbJsonType;
+
+// Because of POST call multiple time requestApi we need to free POST handle here
+// Note this method is called from http-svc just before closing session
+PUBLIC void endPostRequest(AFB_PostHandle * postHandle)
+{
+
+ if (postHandle->type == AFB_POST_JSON) {
+ // if (verbose) fprintf(stderr, "End PostJson Request UID=%d\n", postHandle->uid);
+ }
+
+ if (postHandle->type == AFB_POST_FORM) {
+ if (verbose)
+ fprintf(stderr, "End PostForm Request UID=%d\n", postHandle->uid);
+ }
+ if (postHandle->privatebuf)
+ free(postHandle->privatebuf);
+ free(postHandle);
+}
+
+// Check of apiurl is declare in this plugin and call it
+STATIC AFB_error callPluginApi(AFB_request * request, int plugidx, void *context)
+{
+ json_object *jresp, *jcall, *jreqt;
+ int idx, status, sig;
+ AFB_clientCtx *clientCtx = NULL;
+ AFB_plugin *plugin = request->plugins[plugidx];
+ int signals[] = { SIGALRM, SIGSEGV, SIGFPE, 0 };
+
+ /*---------------------------------------------------------------
+ | Signal handler defined inside CallPluginApi to access Request
+ +---------------------------------------------------------------- */
+ void pluginError(int signum) {
+ sigset_t sigset;
+
+ // unlock signal to allow a new signal to come
+ sigemptyset(&sigset);
+ sigaddset(&sigset, signum);
+ sigprocmask(SIG_UNBLOCK, &sigset, 0);
+
+ fprintf(stderr, "Oops: Plugin Api Timeout timeout\n");
+ longjmp(request->checkPluginCall, signum);
+ }
+
+ // If a plugin hold this urlpath call its callback
+ for (idx = 0; plugin->apis[idx].callback != NULL; idx++) {
+ if (!strcmp(plugin->apis[idx].name, request->api)) {
+
+ // Request was found and at least partially executed
+ jreqt = json_object_new_object();
+ json_object_get(afbJsonType); // increate jsontype reference count
+ json_object_object_add(jreqt, "jtype", afbJsonType);
+
+ // prepare an object to store calling values
+ jcall = json_object_new_object();
+ json_object_object_add(jcall, "prefix", json_object_new_string(plugin->prefix));
+ json_object_object_add(jcall, "api", json_object_new_string(plugin->apis[idx].name));
+
+ // save context before calling the API
+ status = setjmp(request->checkPluginCall);
+ if (status != 0) {
+
+ // Plugin aborted somewhere during its execution
+ json_object_object_add(jcall, "status", json_object_new_string("abort"));
+ json_object_object_add(jcall, "info", json_object_new_string("Plugin broke during execution"));
+ json_object_object_add(jreqt, "request", jcall);
+
+ } else {
+
+ // If timeout protection==0 we are in debug and we do not apply signal protection
+ if (request->config->apiTimeout > 0) {
+ for (sig = 0; signals[sig] != 0; sig++) {
+ if (signal(signals[sig], pluginError) == SIG_ERR) {
+ request->errcode = MHD_HTTP_UNPROCESSABLE_ENTITY;
+ json_object_object_add(jcall, "status", json_object_new_string("fail"));
+ json_object_object_add(jcall, "info", json_object_new_string("Setting Timeout Handler Failed"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ }
+ }
+ // Trigger a timer to protect from unacceptable long time execution
+ alarm((unsigned)request->config->apiTimeout);
+ }
+ // Out of SessionNone every call get a client context session
+ if (AFB_SESSION_NONE != plugin->apis[idx].session) {
+
+ // add client context to request
+ clientCtx = ctxClientGet(request, plugidx);
+ if (clientCtx == NULL) {
+ request->errcode = MHD_HTTP_INSUFFICIENT_STORAGE;
+ json_object_object_add(jcall, "status", json_object_new_string("fail"));
+ json_object_object_add(jcall, "info", json_object_new_string("Client Session Context Full !!!"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ };
+
+ if (verbose)
+ fprintf(stderr, "Plugin=[%s] Api=[%s] Middleware=[%d] Client=[%p] Uuid=[%s] Token=[%s]\n", request->prefix, request->api, plugin->apis[idx].session, clientCtx, clientCtx->uuid, clientCtx->token);
+
+ switch (plugin->apis[idx].session) {
+
+ case AFB_SESSION_CREATE:
+ if (clientCtx->token[0] != '\0' && request->config->token[0] != '\0') {
+ request->errcode = MHD_HTTP_UNAUTHORIZED;
+ json_object_object_add(jcall, "status", json_object_new_string("exist"));
+ json_object_object_add(jcall, "info", json_object_new_string("AFB_SESSION_CREATE Session already exist"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ }
+
+ if (AFB_SUCCESS != ctxTokenCreate(clientCtx, request)) {
+ request->errcode = MHD_HTTP_UNAUTHORIZED;
+ json_object_object_add(jcall, "status", json_object_new_string("fail"));
+ json_object_object_add(jcall, "info", json_object_new_string("AFB_SESSION_CREATE Invalid Initial Token"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ } else {
+ json_object_object_add(jcall, "uuid", json_object_new_string(clientCtx->uuid));
+ json_object_object_add(jcall, "token", json_object_new_string(clientCtx->token));
+ json_object_object_add(jcall, "timeout", json_object_new_int(request->config->cntxTimeout));
+ }
+ break;
+
+ case AFB_SESSION_RENEW:
+ if (AFB_SUCCESS != ctxTokenRefresh(clientCtx, request)) {
+ request->errcode = MHD_HTTP_UNAUTHORIZED;
+ json_object_object_add(jcall, "status", json_object_new_string("fail"));
+ json_object_object_add(jcall, "info", json_object_new_string("AFB_SESSION_REFRESH Broken Exchange Token Chain"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ } else {
+ json_object_object_add(jcall, "uuid", json_object_new_string(clientCtx->uuid));
+ json_object_object_add(jcall, "token", json_object_new_string(clientCtx->token));
+ json_object_object_add(jcall, "timeout", json_object_new_int(request->config->cntxTimeout));
+ }
+ break;
+
+ case AFB_SESSION_CLOSE:
+ if (AFB_SUCCESS != ctxTokenCheck(clientCtx, request)) {
+ request->errcode = MHD_HTTP_UNAUTHORIZED;
+ json_object_object_add(jcall, "status", json_object_new_string("empty"));
+ json_object_object_add(jcall, "info", json_object_new_string("AFB_SESSION_CLOSE Not a Valid Access Token"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ } else {
+ json_object_object_add(jcall, "uuid", json_object_new_string(clientCtx->uuid));
+ }
+ break;
+
+ case AFB_SESSION_CHECK:
+ default:
+ // default action is check
+ if (AFB_SUCCESS != ctxTokenCheck(clientCtx, request)) {
+ request->errcode = MHD_HTTP_UNAUTHORIZED;
+ json_object_object_add(jcall, "status", json_object_new_string("fail"));
+ json_object_object_add(jcall, "info", json_object_new_string("AFB_SESSION_CHECK Invalid Active Token"));
+ json_object_object_add(jreqt, "request", jcall);
+ goto ExitOnDone;
+ }
+ break;
+ }
+ }
+ // Effectively CALL PLUGIN API with a subset of the context
+ jresp = plugin->apis[idx].callback(request, context);
+
+ // Store context in case it was updated by plugins
+ if (request->context != NULL)
+ clientCtx->contexts[plugidx] = request->context;
+
+ // handle intermediary Post Iterates out of band
+ if ((jresp == NULL)
+ && (request->errcode == MHD_HTTP_OK))
+ return (AFB_SUCCESS);
+
+ // Session close is done after the API call so API can still use session in closing API
+ if (AFB_SESSION_CLOSE == plugin->apis[idx].session)
+ ctxTokenReset(clientCtx, request);
+
+ // API should return NULL of a valid Json Object
+ if (jresp == NULL) {
+ json_object_object_add(jcall, "status", json_object_new_string("null"));
+ json_object_object_add(jreqt, "request", jcall);
+ request->errcode = MHD_HTTP_NO_RESPONSE;
+
+ } else {
+ json_object_object_add(jcall, "status", json_object_new_string("processed"));
+ json_object_object_add(jreqt, "request", jcall);
+ json_object_object_add(jreqt, "response", jresp);
+ }
+ // cancel timeout and plugin signal handle before next call
+ if (request->config->apiTimeout > 0) {
+ alarm(0);
+ for (sig = 0; signals[sig] != 0; sig++) {
+ signal(signals[sig], SIG_DFL);
+ }
+ }
+ }
+ goto ExitOnDone;
+ }
+ }
+ return (AFB_FAIL);
+
+ ExitOnDone:
+ request->jresp = jreqt;
+ return (AFB_DONE);
+}
+
+STATIC AFB_error findAndCallApi(AFB_request * request, void *context)
+{
+ int idx;
+ AFB_error status;
+
+ if (!request->api || !request->prefix)
+ return (AFB_FAIL);
+
+ // Search for a plugin with this urlpath
+ for (idx = 0; request->plugins[idx] != NULL; idx++) {
+ if (!strcmp(request->plugins[idx]->prefix, request->prefix)) {
+ status = callPluginApi(request, idx, context);
+ break;
+ }
+ }
+ // No plugin was found
+ if (request->plugins[idx] == NULL) {
+ request->jresp = jsonNewMessage(AFB_FATAL, "No Plugin=[%s] Url=%s", request->prefix, request->url);
+ goto ExitOnError;
+ }
+ // plugin callback did not return a valid Json Object
+ if (status == AFB_FAIL) {
+ request->jresp = jsonNewMessage(AFB_FATAL, "No API=[%s] for Plugin=[%s] url=[%s]", request->api, request->prefix, request->url);
+ goto ExitOnError;
+ }
+ // Everything look OK
+ return (status);
+
+ ExitOnError:
+ request->errcode = MHD_HTTP_UNPROCESSABLE_ENTITY;
+ return (AFB_FAIL);
+}
+
+// This CB is call for every item with a form post it reformat iterator values
+// and callback Plugin API for each Item within PostForm.
+STATIC int doPostIterate(void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *mimetype, const char *encoding, const char *data, uint64_t offset, size_t size)
+{
+
+ AFB_error status;
+ AFB_PostItem item;
+
+ // retrieve API request from Post iterator handle
+ AFB_PostHandle *postHandle = (AFB_PostHandle *) cls;
+ AFB_request *request = (AFB_request *) postHandle->privatebuf;
+ AFB_PostRequest postRequest;
+
+ if (verbose)
+ fprintf(stderr, "postHandle key=%s filename=%s len=%zu mime=%s\n", key, filename, size, mimetype);
+
+ // Create and Item value for Plugin API
+ item.kind = kind;
+ item.key = key;
+ item.filename = filename;
+ item.mimetype = mimetype;
+ item.encoding = encoding;
+ item.len = size;
+ item.data = data;
+ item.offset = offset;
+
+ // Reformat Request to make it somehow similar to GET/PostJson case
+ postRequest.data = (char *)postHandle;
+ postRequest.len = size;
+ postRequest.type = AFB_POST_FORM;;
+ request->post = &postRequest;
+
+ // effectively call plugin API
+ status = findAndCallApi(request, &item);
+ // when returning no processing of postform stop
+ if (status != AFB_SUCCESS)
+ return MHD_NO;
+
+ // let's allow iterator to move to next item
+ return MHD_YES;
+}
+
+STATIC void freeRequest(AFB_request * request)
+{
+
+ free(request->prefix);
+ free(request->api);
+ free(request);
+}
+
+STATIC AFB_request *createRequest(struct MHD_Connection *connection, AFB_session * session, const char *url)
+{
+
+ AFB_request *request;
+
+ // Start with a clean request
+ request = calloc(1, sizeof(AFB_request));
+ char *urlcpy1, *urlcpy2;
+ char *baseapi, *baseurl;
+
+ // Extract plugin urlpath from request and make two copy because strsep overload copy
+ urlcpy1 = urlcpy2 = strdup(url);
+ baseurl = strsep(&urlcpy2, "/");
+ if (baseurl == NULL) {
+ request->jresp = jsonNewMessage(AFB_FATAL, "Invalid API call url=[%s]", url);
+ request->errcode = MHD_HTTP_BAD_REQUEST;
+ goto Done;
+ }
+ // let's compute URL and call API
+ baseapi = strsep(&urlcpy2, "/");
+ if (baseapi == NULL) {
+ request->jresp = jsonNewMessage(AFB_FATAL, "Invalid API call plugin=[%s] url=[%s]", baseurl, url);
+ request->errcode = MHD_HTTP_BAD_REQUEST;
+ goto Done;
+ }
+ // build request structure
+ request->connection = connection;
+ request->config = session->config;
+ request->url = url;
+ request->prefix = strdup(baseurl);
+ request->api = strdup(baseapi);
+ request->plugins = session->plugins;
+ // note request->handle is fed with request->context in ctxClientGet
+
+ Done:
+ free(urlcpy1);
+ return (request);
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+static int doRestApiPost(struct MHD_Connection *connection, AFB_session * session, const char *url, const char *method, const char *upload_data, size_t * upload_data_size, void **con_cls)
+{
+
+ static int postcount = 0; // static counter to debug POST protocol
+ json_object *errMessage;
+ AFB_error status;
+ struct MHD_Response *webResponse;
+ const char *serialized;
+ AFB_request *request = NULL;
+ AFB_PostHandle *postHandle;
+ AFB_PostRequest postRequest;
+ int ret;
+
+ // fprintf (stderr, "doRestAPI method=%s posthandle=%p\n", method, con_cls);
+
+ // if post data may come in multiple calls
+ const char *encoding, *param;
+ int contentlen = -1;
+ postHandle = *con_cls;
+
+ // This is the initial post event let's create form post structure POST data come in multiple events
+ if (postHandle == NULL) {
+
+ // allocate application POST processor handle to zero
+ postHandle = calloc(1, sizeof(AFB_PostHandle));
+ postHandle->uid = postcount++; // build a UID for DEBUG
+ *con_cls = postHandle; // update context with posthandle
+
+ // Let make sure we have the right encoding and a valid length
+ encoding = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_TYPE);
+
+ // We are facing an empty post let's process it as a get
+ if (encoding == NULL) {
+ postHandle->type = AFB_POST_EMPTY;
+ return MHD_YES;
+ }
+ // Form post is handle through a PostProcessor and call API once per form key
+ if (strcasestr(encoding, FORM_CONTENT) != NULL) {
+ if (verbose)
+ fprintf(stderr, "Create doPostIterate[uid=%d posthandle=%p]\n", postHandle->uid, postHandle);
+
+ request = createRequest(connection, session, url);
+ if (request->jresp != NULL)
+ goto ProcessApiCall;
+ postHandle->type = AFB_POST_FORM;
+ postHandle->privatebuf = (void *)request;
+ postHandle->pp = MHD_create_post_processor(connection, MAX_POST_SIZE, &doPostIterate, postHandle);
+
+ if (NULL == postHandle->pp) {
+ fprintf(stderr, "OOPS: Internal error fail to allocate MHD_create_post_processor\n");
+ free(postHandle);
+ return MHD_NO;
+ }
+ return MHD_YES;
+ }
+ // POST json is store into a buffer and present in one piece to API
+ if (strcasestr(encoding, JSON_CONTENT) != NULL) {
+
+ param = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_LENGTH);
+ if (param)
+ sscanf(param, "%i", &contentlen);
+
+ // Because PostJson are build in RAM size is constrained
+ if (contentlen > MAX_POST_SIZE) {
+ errMessage = jsonNewMessage(AFB_FATAL, "Post Date to big %d > %d", contentlen, MAX_POST_SIZE);
+ goto ExitOnError;
+ }
+ // Size is OK, let's allocate a buffer to hold post data
+ postHandle->type = AFB_POST_JSON;
+ postHandle->privatebuf = malloc((unsigned)contentlen + 1); // allocate memory for full POST data + 1 for '\0' enf of string
+
+ // if (verbose) fprintf(stderr, "Create PostJson[uid=%d] Size=%d\n", postHandle->uid, contentlen);
+ return MHD_YES;
+
+ } else {
+ // We only support Json and Form Post format
+ errMessage = jsonNewMessage(AFB_FATAL, "Post Date wrong type encoding=%s != %s", encoding, JSON_CONTENT);
+ goto ExitOnError;
+ }
+ }
+ // This time we receive partial/all Post data. Note that even if we get all POST data. We should nevertheless
+ // return MHD_YES and not process the request directly. Otherwise Libmicrohttpd is unhappy and fails with
+ // 'Internal application error, closing connection'.
+ if (*upload_data_size) {
+
+ if (postHandle->type == AFB_POST_FORM) {
+ // if (verbose) fprintf(stderr, "Processing PostForm[uid=%d]\n", postHandle->uid);
+ MHD_post_process(postHandle->pp, upload_data, *upload_data_size);
+ }
+ // Process JsonPost request when buffer is completed let's call API
+ if (postHandle->type == AFB_POST_JSON) {
+ // if (verbose) fprintf(stderr, "Updating PostJson[uid=%d]\n", postHandle->uid);
+ memcpy(&postHandle->privatebuf[postHandle->len], upload_data, *upload_data_size);
+ postHandle->len = postHandle->len + *upload_data_size;
+ }
+
+ *upload_data_size = 0;
+ return MHD_YES;
+
+ } else { // we have finish with Post reception let's finish the work
+
+ // Create a request structure to finalise the request
+ request = createRequest(connection, session, url);
+ if (request->jresp != NULL) {
+ errMessage = request->jresp;
+ goto ExitOnError;
+ }
+ postRequest.type = postHandle->type;
+
+ // Postform add application context handle to request
+ if (postHandle->type == AFB_POST_FORM) {
+ postRequest.data = (char *)postHandle;
+ request->post = &postRequest;
+ }
+
+ if (postHandle->type == AFB_POST_JSON) {
+ // if (verbose) fprintf(stderr, "Processing PostJson[uid=%d]\n", postHandle->uid);
+
+ param = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_LENGTH);
+ if (param)
+ sscanf(param, "%i", &contentlen);
+
+ // At this level we're may verify that we got everything and process DATA
+ if (postHandle->len != contentlen) {
+ errMessage = jsonNewMessage(AFB_FATAL, "Post Data Incomplete UID=%d Len %d != %d", postHandle->uid, contentlen, postHandle->len);
+ goto ExitOnError;
+ }
+ // Before processing data, make sure buffer string is properly ended
+ postHandle->privatebuf[postHandle->len] = '\0';
+ postRequest.data = postHandle->privatebuf;
+ request->post = &postRequest;
+
+ // if (verbose) fprintf(stderr, "Close Post[%d] Buffer=%s\n", postHandle->uid, request->post->data);
+ }
+ }
+
+ ProcessApiCall:
+ // Request is ready let's call API without any extra handle
+ status = findAndCallApi(request, NULL);
+
+ serialized = json_object_to_json_string(request->jresp);
+ webResponse = MHD_create_response_from_buffer(strlen(serialized), (void *)serialized, MHD_RESPMEM_MUST_COPY);
+
+ // client did not pass token on URI let's use cookies
+ if ((!request->restfull) && (request->context != NULL)) {
+ char cookie[256];
+ snprintf(cookie, sizeof(cookie), "%s-%d=%s; Path=%s; Max-Age=%d; HttpOnly", COOKIE_NAME, request->config->httpdPort, request->uuid, request->config->rootapi, request->config->cntxTimeout);
+ MHD_add_response_header(webResponse, MHD_HTTP_HEADER_SET_COOKIE, cookie);
+ }
+ // if requested add an error status
+ if (request->errcode != 0)
+ ret = MHD_queue_response(connection, request->errcode, webResponse);
+ else
+ MHD_queue_response(connection, MHD_HTTP_OK, webResponse);
+
+ MHD_destroy_response(webResponse);
+ json_object_put(request->jresp); // decrease reference rqtcount to free the json object
+ freeRequest(request);
+ return MHD_YES;
+
+ ExitOnError:
+ freeRequest(request);
+ serialized = json_object_to_json_string(errMessage);
+ webResponse = MHD_create_response_from_buffer(strlen(serialized), (void *)serialized, MHD_RESPMEM_MUST_COPY);
+ MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, webResponse);
+ MHD_destroy_response(webResponse);
+ json_object_put(errMessage); // decrease reference rqtcount to free the json object
+ return MHD_YES;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+static int doRestApiGet(struct MHD_Connection *connection, AFB_session * session, const char *url, const char *method, const char *upload_data, size_t * upload_data_size, void **con_cls)
+{
+
+ static int postcount = 0; // static counter to debug POST protocol
+ json_object *errMessage;
+ AFB_error status;
+ struct MHD_Response *webResponse;
+ const char *serialized;
+ AFB_request *request = NULL;
+ AFB_PostHandle *postHandle;
+ AFB_PostRequest postRequest;
+ int ret;
+
+ // fprintf (stderr, "doRestAPI method=%s posthandle=%p\n", method, con_cls);
+
+ // if post data may come in multiple calls
+ // this is a get we only need a request
+ request = createRequest(connection, session, url);
+
+ ProcessApiCall:
+ // Request is ready let's call API without any extra handle
+ status = findAndCallApi(request, NULL);
+
+ serialized = json_object_to_json_string(request->jresp);
+ webResponse = MHD_create_response_from_buffer(strlen(serialized), (void *)serialized, MHD_RESPMEM_MUST_COPY);
+
+ // client did not pass token on URI let's use cookies
+ if ((!request->restfull) && (request->context != NULL)) {
+ char cookie[256];
+ snprintf(cookie, sizeof(cookie), "%s-%d=%s; Path=%s; Max-Age=%d; HttpOnly", COOKIE_NAME, request->config->httpdPort, request->uuid, request->config->rootapi, request->config->cntxTimeout);
+ MHD_add_response_header(webResponse, MHD_HTTP_HEADER_SET_COOKIE, cookie);
+ }
+ // if requested add an error status
+ if (request->errcode != 0)
+ ret = MHD_queue_response(connection, request->errcode, webResponse);
+ else
+ MHD_queue_response(connection, MHD_HTTP_OK, webResponse);
+
+ MHD_destroy_response(webResponse);
+ json_object_put(request->jresp); // decrease reference rqtcount to free the json object
+ freeRequest(request);
+ return MHD_YES;
+
+ ExitOnError:
+ freeRequest(request);
+ serialized = json_object_to_json_string(errMessage);
+ webResponse = MHD_create_response_from_buffer(strlen(serialized), (void *)serialized, MHD_RESPMEM_MUST_COPY);
+ MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, webResponse);
+ MHD_destroy_response(webResponse);
+ json_object_put(errMessage); // decrease reference rqtcount to free the json object
+ return MHD_YES;
+}
+
+int doRestApi(struct MHD_Connection *connection, AFB_session * session, const char *url, const char *method, const char *upload_data, size_t * upload_data_size, void **con_cls)
+{
+ int rc;
+
+ if (0 == strcmp(method, MHD_HTTP_METHOD_POST)) {
+ rc = doRestApiPost(connection, session, url, method, upload_data, upload_data_size, con_cls);
+ } else {
+ rc = doRestApiGet(connection, session, url, method, upload_data, upload_data_size, con_cls);
+ }
+ return rc;
+}
+
diff --git a/src/afb-hreq.h b/src/afb-hreq.h
index f2362b10..b5f1e0b2 100644
--- a/src/afb-hreq.h
+++ b/src/afb-hreq.h
@@ -58,3 +58,4 @@ extern const char *afb_hreq_get_argument(struct afb_hreq *hreq, const char *name
extern const char *afb_hreq_get_header(struct afb_hreq *hreq, const char *name);
extern struct afb_req_itf afb_hreq_itf;
+
diff --git a/src/afb-plugins.c b/src/afb-plugins.c
new file mode 100644
index 00000000..1658fc57
--- /dev/null
+++ b/src/afb-plugins.c
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author "Fulup Ar Foll"
+ * Author José Bollo <jose.bollo@iot.bzh>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Contain all generic part to handle REST/API
+ *
+ * https://www.gnu.org/software/libmicrohttpd/tutorial.html [search 'largepost.c']
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#include <dirent.h>
+#include <dlfcn.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "../include/local-def.h"
+
+#include "afb-plugins.h"
+
+static const char plugin_register_function[] = "pluginRegister";
+
+AFB_plugin *afb_plugins_search(AFB_session *session, const char *prefix, size_t length)
+{
+ int i, n;
+ AFB_plugin **plugins, *p;
+
+ if (!length)
+ length = strlen(prefix);
+
+ n = session->config->pluginCount;
+ plugins = session->plugins;
+
+ for (i = 0 ; i < n ; i++) {
+ p = plugins[i];
+ if (p->prefixlen == length && !strcmp(p->prefix, prefix))
+ return p;
+ }
+ return NULL;
+}
+
+int afb_plugins_add_plugin(AFB_session *session, const char *path)
+{
+ AFB_plugin *desc, *check, **plugins;
+ AFB_plugin *(*pluginRegisterFct) (void);
+ void *handle;
+ size_t len;
+
+ // This is a loadable library let's check if it's a plugin
+ handle = dlopen(path, RTLD_NOW | RTLD_LOCAL);
+ if (handle == NULL) {
+ fprintf(stderr, "[%s] not loadable, continuing...\n", path);
+ goto error;
+ }
+
+ /* retrieves the register function */
+ pluginRegisterFct = dlsym(handle, plugin_register_function);
+ if (!pluginRegisterFct) {
+ fprintf(stderr, "[%s] not an AFB plugin, continuing...\n", path);
+ goto error2;
+ }
+ if (verbose)
+ fprintf(stderr, "[%s] is a valid AFB plugin\n", path);
+
+ /* allocates enough memory */
+ plugins = realloc(session->plugins, ((unsigned)session->config->pluginCount + 2) * sizeof(AFB_plugin*));
+ if (plugins == NULL) {
+ fprintf(stderr, "ERROR: plugin [%s] memory missing. continuing...\n", path);
+ goto error2;
+ }
+ session->plugins = plugins;
+
+ /* init the plugin */
+ desc = pluginRegisterFct();
+ if (desc == NULL) {
+ fprintf(stderr, "ERROR: plugin [%s] register function failed. continuing...\n", path);
+ goto error2;
+ }
+
+ /* check the returned structure */
+ if (desc->type != AFB_PLUGIN_JSON) {
+ fprintf(stderr, "ERROR: plugin [%s] invalid type %d...\n", path, desc->type);
+ goto error2;
+ }
+ if (desc->prefix == NULL || *desc->prefix == 0) {
+ fprintf(stderr, "ERROR: plugin [%s] bad prefix...\n", path);
+ goto error2;
+ }
+ if (desc->info == NULL || *desc->info == 0) {
+ fprintf(stderr, "ERROR: plugin [%s] bad description...\n", path);
+ goto error2;
+ }
+ if (desc->apis == NULL) {
+ fprintf(stderr, "ERROR: plugin [%s] no APIs...\n", path);
+ goto error2;
+ }
+
+ /* check previously existing plugin */
+ len = strlen(desc->prefix);
+ check = afb_plugins_search(session, desc->prefix, len);
+ if (check != NULL) {
+ fprintf(stderr, "ERROR: plugin [%s] prefix %s duplicated...\n", path, desc->prefix);
+ goto error2;
+ }
+
+ /* Prebuild plugin jtype to boost API response */
+ desc->jtype = json_object_new_string(desc->prefix);
+ desc->prefixlen = len;
+
+ /* record the plugin */
+ session->plugins[session->config->pluginCount] = desc;
+ session->plugins[++session->config->pluginCount] = NULL;
+
+ if (verbose)
+ fprintf(stderr, "Loading plugin[%d] prefix=[%s] info=%s\n", session->config->pluginCount, desc->prefix, desc->info);
+
+ return 0;
+
+error2:
+ dlclose(handle);
+error:
+ return -1;
+}
+
+static int adddirs(AFB_session * session, char path[PATH_MAX], size_t end)
+{
+ int rc;
+ DIR *dir;
+ struct dirent ent, *result;
+ size_t len;
+
+ /* open the DIR now */
+ dir = opendir(path);
+ if (dir == NULL) {
+ fprintf(stderr, "ERROR in scanning plugin directory %s, %m\n", path);
+ return -1;
+ }
+ if (verbose)
+ fprintf(stderr, "Scanning dir=[%s] for plugins\n", path);
+
+ /* scan each entry */
+ if (end)
+ path[end++] = '/';
+ for (;;) {
+ readdir_r(dir, &ent, &result);
+ if (result == NULL)
+ break;
+
+ len = strlen(ent.d_name);
+ if (len + end >= PATH_MAX) {
+ fprintf(stderr, "path too long for %s\n", ent.d_name);
+ continue;
+ }
+ memcpy(&path[end], ent.d_name, len+1);
+ if (ent.d_type == DT_DIR) {
+ /* case of directories */
+ if (ent.d_name[0] == '.') {
+ if (len == 1)
+ continue;
+ if (ent.d_name[1] == '.' && len == 2)
+ continue;
+ }
+ rc = adddirs(session, path, end+len);;
+ } else if (ent.d_type == DT_REG) {
+ /* case of files */
+ if (!strstr(ent.d_name, ".so"))
+ continue;
+ rc = afb_plugins_add_plugin(session, path);
+ }
+ }
+ closedir(dir);
+ return 0;
+}
+
+int afb_plugins_add_directory(AFB_session * session, const char *path)
+{
+ size_t length;
+ char buffer[PATH_MAX];
+
+ length = strlen(path);
+ if (length >= sizeof(buffer)) {
+ fprintf(stderr, "path too long %lu [%.99s...]\n", (unsigned long)length, path);
+ return -1;
+ }
+
+ memcpy(buffer, path, length + 1);
+ return adddirs(session, buffer, length);
+}
+
+int afb_plugins_add_path(AFB_session * session, const char *path)
+{
+ struct stat st;
+ int rc;
+
+ rc = stat(path, &st);
+ if (rc < 0)
+ fprintf(stderr, "Invalid plugin path [%s]: %m\n", path);
+ else if (S_ISDIR(st.st_mode))
+ rc = afb_plugins_add_directory(session, path);
+ else
+ rc = afb_plugins_add_plugin(session, path);
+ return rc;
+}
+
+int afb_plugins_add_pathset(AFB_session * session, const char *pathset)
+{
+ static char sep[] = ":";
+ char *ps, *p;
+ int rc;
+
+ ps = strdupa(pathset);
+ for (;;) {
+ p = strsep(&ps, sep);
+ if (!p)
+ return 0;
+ rc = afb_plugins_add_path(session, p);
+ };
+}
+
+void initPlugins(AFB_session * session)
+{
+ int rc = afb_plugins_add_pathset(session, session->config->ldpaths);
+}
+
diff --git a/src/afb-plugins.h b/src/afb-plugins.h
new file mode 100644
index 00000000..c2db2e4c
--- /dev/null
+++ b/src/afb-plugins.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright 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.
+ */
+
+
+AFB_plugin *afb_plugins_search(AFB_session *session, const char *prefix, size_t length);
+
+int afb_plugins_add_plugin(AFB_session *session, const char *path);
+
+int afb_plugins_add_directory(AFB_session * session, const char *path);
+
+int afb_plugins_add_path(AFB_session * session, const char *path);
+
+int afb_plugins_add_pathset(AFB_session * session, const char *pathset);
+
+void initPlugins(AFB_session * session);
+
diff --git a/src/afb-req-itf.h b/src/afb-req-itf.h
index 004d2c6c..e1d9dc84 100644
--- a/src/afb-req-itf.h
+++ b/src/afb-req-itf.h
@@ -21,5 +21,21 @@ struct afb_req_itf {
const char *(*get_argument)(void *data, const char *name);
};
+struct afb_req {
+ struct afb_req_itf *itf;
+ void *data;
+};
+
+inline const char *afb_get_cookie(struct afb_req req, const char *name)
+{
+ return req.itf->get_cookie(req.data, name);
+}
+
+inline const char *afb_get_argument(struct afb_req req, const char *name)
+{
+ return req.itf->get_argument(req.data, name);
+}
+
+
diff --git a/src/afb-websock.c b/src/afb-websock.c
index 1134ba80..90148ecf 100644
--- a/src/afb-websock.c
+++ b/src/afb-websock.c
@@ -24,12 +24,13 @@
#include <sys/uio.h>
#include <openssl/sha.h>
+#include <openssl/bio.h>
+#include <openssl/evp.h>
#include "websock.h"
#include "../include/local-def.h"
-
#include "afb-method.h"
#include "afb-hreq.h"
@@ -124,46 +125,70 @@ static void make_accept_value(const char *key, char result[29])
result[28] = 0;
}
-static int handshake(struct afb_hreq *hreq, struct afb_websock **ws)
+static int headerhas(const char *header, const char *needle)
+{
+ static const char sep[] = " \t,";
+ size_t len, n;
+
+ n = strlen(needle);
+ for(;;) {
+ header += strspn(header, sep);
+ if (!*header)
+ return 0;
+ len = strcspn(header, sep);
+printf("!!!%.*s!!!\n",len,header);
+ if (n == len && 0 == strncasecmp(needle, header, n))
+ return 1;
+ header += len;
+ }
+}
+
+int afb_websock_check(struct afb_hreq *hreq, int *later)
{
const char *connection, *upgrade, *key, *version, *protocols;
char acceptval[29];
int vernum;
struct MHD_Response *response;
+ /* is an upgrade to websocket ? */
upgrade = afb_hreq_get_header(hreq, MHD_HTTP_HEADER_UPGRADE);
+printf("upgrade %s\n", upgrade);
if (upgrade == NULL || strcasecmp(upgrade, websocket_s))
return 0;
+ /* is a connection for upgrade ? */
connection = afb_hreq_get_header(hreq, MHD_HTTP_HEADER_CONNECTION);
- if (connection == NULL || strcasecmp (connection, MHD_HTTP_HEADER_UPGRADE))
+printf("connection %s\n", connection);
+ if (connection == NULL || !headerhas (connection, MHD_HTTP_HEADER_UPGRADE))
return 0;
+ /* is a get ? */
if(hreq->method != afb_method_get || strcasecmp(hreq->version, MHD_HTTP_VERSION_1_1))
return 0;
+ /* has a key and a version ? */
key = afb_hreq_get_header(hreq, sec_websocket_key_s);
version = afb_hreq_get_header(hreq, sec_websocket_version_s);
+printf("key %s\n", key);
+printf("version %s\n", connection);
if (key == NULL || version == NULL)
return 0;
+ /* is a supported version ? */
vernum = atoi(version);
- if (vernum != 13)
- return 0;
-
- if (*ws == NULL)
- return 1;
-
- protocols = afb_hreq_get_header(hreq, sec_websocket_protocol_s);
-
if (vernum != 13) {
response = MHD_create_response_from_data(0,NULL,0,0);
MHD_add_response_header (response, sec_websocket_version_s, "13");
MHD_queue_response (hreq->connection, MHD_HTTP_BAD_REQUEST, response);
MHD_destroy_response (response);
- return 2;
+ *later = 1;
+ return 1;
}
+ /* is the protocol supported ? */
+ protocols = afb_hreq_get_header(hreq, sec_websocket_protocol_s);
+
+ /* send the accept connection */
make_accept_value(key, acceptval);
response = MHD_create_response_from_data(0,NULL,0,0);
MHD_add_response_header (response, sec_websocket_accept_s, acceptval);
@@ -172,24 +197,24 @@ static int handshake(struct afb_hreq *hreq, struct afb_websock **ws)
MHD_queue_response (hreq->connection, MHD_HTTP_SWITCHING_PROTOCOLS, response);
MHD_destroy_response (response);
+ *later = 0;
return 1;
}
-int afb_websock_is_handshake(struct afb_hreq *hreq)
-{
- return handshake(hreq, NULL);
-}
-
-int afb_websock_open_if(struct afb_hreq *hreq, struct afb_websock **ws)
+struct afb_websock *afb_websock_create(struct MHD_Connection *connection)
{
- assert(*ws != NULL);
- *ws = NULL;
- return handshake(hreq, ws);
-}
-
-int afb_websock_open(struct afb_hreq *hreq, struct afb_websock **ws)
-{
- int rc = afb_websock_open_if(hreq, ws);
- return rc ? rc : -1;
+ struct afb_websock *result;
+
+ result = malloc(sizeof * result);
+ if (result) {
+ result->connection = connection;
+ result->fd = MHD_get_connection_info(connection, MHD_CONNECTION_INFO_CONNECTION_FD)->connect_fd;
+ result->ws = websock_create(&afb_websock_itf, result);
+ if (result->ws == NULL) {
+ free(result);
+ result = NULL;
+ }
+ }
+ return result;
}
diff --git a/src/afb-websock.h b/src/afb-websock.h
new file mode 100644
index 00000000..db40b9ae
--- /dev/null
+++ b/src/afb-websock.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright 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.
+ */
+
+int afb_websock_check(struct afb_hreq *hreq, int *later);
+struct afb_websock *afb_websock_create(struct MHD_Connection *connection);
+
+
diff --git a/src/http-svc.c b/src/http-svc.c
index ff09650f..f281bbf9 100644
--- a/src/http-svc.c
+++ b/src/http-svc.c
@@ -24,6 +24,7 @@
#include "../include/local-def.h"
#include "afb-method.h"
#include "afb-hreq.h"
+#include "afb-websock.h"
struct afb_hsrv_handler {
@@ -42,15 +43,15 @@ struct afb_diralias {
int dirfd;
};
-int afb_request_one_page_api_redirect(
- struct afb_hreq *request,
+int afb_hreq_one_page_api_redirect(
+ struct afb_hreq *hreq,
struct afb_hreq_post *post,
void *data)
{
size_t plen;
char *url;
- if (request->lentail >= 2 && request->tail[1] == '#')
+ if (hreq->lentail >= 2 && hreq->tail[1] == '#')
return 0;
/*
* Here we have for example:
@@ -61,13 +62,13 @@ int afb_request_one_page_api_redirect(
*
* Let compute plen that include the / at end (for "/pre/")
*/
- plen = request->lenurl - request->lentail + 1;
- url = alloca(request->lenurl + 3);
- memcpy(url, request->url, plen);
+ plen = hreq->lenurl - hreq->lentail + 1;
+ url = alloca(hreq->lenurl + 3);
+ memcpy(url, hreq->url, plen);
url[plen++] = '#';
url[plen++] = '!';
- memcpy(&url[plen], &request->tail[1], request->lentail);
- return afb_hreq_redirect_to(request, url);
+ memcpy(&url[plen], &hreq->tail[1], hreq->lentail);
+ return afb_hreq_redirect_to(hreq, url);
}
struct afb_hsrv_handler *afb_hsrv_handler_new(
@@ -127,27 +128,35 @@ int afb_req_add_handler(
return 1;
}
-static int relay_to_doRestApi(struct afb_hreq *request, struct afb_hreq_post *post, void *data)
+static int relay_to_doRestApi(struct afb_hreq *hreq, struct afb_hreq_post *post, void *data)
{
- return doRestApi(request->connection, request->session, &request->tail[1], get_method_name(request->method),
- post->upload_data, post->upload_data_size, (void **)request->recorder);
+ int later;
+ if (afb_websock_check(hreq, &later)) {
+ if (!later) {
+ struct afb_websock *ws = afb_websock_create(hreq->connection);
+ }
+ return 1;
+ }
+
+ return doRestApi(hreq->connection, hreq->session, &hreq->tail[1], get_method_name(hreq->method),
+ post->upload_data, post->upload_data_size, (void **)hreq->recorder);
}
-static int handle_alias(struct afb_hreq *request, struct afb_hreq_post *post, void *data)
+static int handle_alias(struct afb_hreq *hreq, struct afb_hreq_post *post, void *data)
{
struct afb_diralias *da = data;
- if (request->method != afb_method_get) {
- afb_hreq_reply_error(request, MHD_HTTP_METHOD_NOT_ALLOWED);
+ if (hreq->method != afb_method_get) {
+ afb_hreq_reply_error(hreq, MHD_HTTP_METHOD_NOT_ALLOWED);
return 1;
}
- if (!afb_hreq_valid_tail(request)) {
- afb_hreq_reply_error(request, MHD_HTTP_FORBIDDEN);
+ if (!afb_hreq_valid_tail(hreq)) {
+ afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
return 1;
}
- return afb_hreq_reply_file(request, da->dirfd, &request->tail[1]);
+ return afb_hreq_reply_file(hreq, da->dirfd, &hreq->tail[1]);
}
int afb_req_add_alias(AFB_session * session, const char *prefix, const char *alias, int priority)
@@ -189,7 +198,7 @@ static int my_default_init(AFB_session * session)
if (!afb_req_add_alias(session, "", session->config->rootdir, -10))
return 0;
- if (!afb_req_add_handler(session, session->config->rootbase, afb_request_one_page_api_redirect, NULL, -20))
+ if (!afb_req_add_handler(session, session->config->rootbase, afb_hreq_one_page_api_redirect, NULL, -20))
return 0;
return 1;
@@ -206,7 +215,7 @@ static int access_handler(
void **recorder)
{
struct afb_hreq_post post;
- struct afb_hreq request;
+ struct afb_hreq hreq;
enum afb_method method;
AFB_session *session;
struct afb_hsrv_handler *iter;
@@ -237,36 +246,36 @@ static int access_handler(
method = get_method(methodstr);
if (method == afb_method_none) {
- afb_hreq_reply_error(&request, MHD_HTTP_BAD_REQUEST);
+ afb_hreq_reply_error(&hreq, MHD_HTTP_BAD_REQUEST);
return MHD_YES;
}
/* init the request */
- request.session = cls;
- request.connection = connection;
- request.method = method;
- request.version = version;
- request.tail = request.url = url;
- request.lentail = request.lenurl = strlen(url);
- request.recorder = (struct afb_hreq **)recorder;
- request.post_handler = NULL;
- request.post_completed = NULL;
- request.post_data = NULL;
+ hreq.session = cls;
+ hreq.connection = connection;
+ hreq.method = method;
+ hreq.version = version;
+ hreq.tail = hreq.url = url;
+ hreq.lentail = hreq.lenurl = strlen(url);
+ hreq.recorder = (struct afb_hreq **)recorder;
+ hreq.post_handler = NULL;
+ hreq.post_completed = NULL;
+ hreq.post_data = NULL;
/* search an handler for the request */
iter = session->handlers;
while (iter) {
- if (afb_hreq_unprefix(&request, iter->prefix, iter->length)) {
- if (iter->handler(&request, &post, iter->data))
+ if (afb_hreq_unprefix(&hreq, iter->prefix, iter->length)) {
+ if (iter->handler(&hreq, &post, iter->data))
return MHD_YES;
- request.tail = request.url;
- request.lentail = request.lenurl;
+ hreq.tail = hreq.url;
+ hreq.lentail = hreq.lenurl;
}
iter = iter->next;
}
/* no handler */
- afb_hreq_reply_error(&request, method != afb_method_get ? MHD_HTTP_BAD_REQUEST : MHD_HTTP_NOT_FOUND);
+ afb_hreq_reply_error(&hreq, method != afb_method_get ? MHD_HTTP_BAD_REQUEST : MHD_HTTP_NOT_FOUND);
return MHD_YES;
}
@@ -337,7 +346,7 @@ AFB_error httpdStart(AFB_session * session)
}
session->httpd = MHD_start_daemon(
- MHD_USE_EPOLL_LINUX_ONLY | MHD_USE_TCP_FASTOPEN | MHD_USE_DEBUG,
+ MHD_USE_EPOLL_LINUX_ONLY | MHD_USE_TCP_FASTOPEN | MHD_USE_DEBUG | MHD_USE_SUSPEND_RESUME,
(uint16_t) session->config->httpdPort, /* port */
new_client_handler, NULL, /* Tcp Accept call back + extra attribute */
access_handler, session, /* Http Request Call back + extra attribute */
diff --git a/src/main.c b/src/main.c
index e9cddcb5..48b5a601 100644
--- a/src/main.c
+++ b/src/main.c
@@ -25,6 +25,7 @@
#include <sys/types.h>
#include "local-def.h"
+#include "afb-plugins.h"
#if !defined(PLUGIN_INSTALL_DIR)
#error "you should define PLUGIN_INSTALL_DIR"
diff --git a/src/rest-api.c b/src/rest-api.c
deleted file mode 100644
index 12f4a448..00000000
--- a/src/rest-api.c
+++ /dev/null
@@ -1,668 +0,0 @@
-/*
- * Copyright (C) 2015 "IoT.bzh"
- * Author "Fulup Ar Foll"
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- * Contain all generic part to handle REST/API
- *
- * https://www.gnu.org/software/libmicrohttpd/tutorial.html [search 'largepost.c']
- */
-
-#include "../include/local-def.h"
-
-#include <dirent.h>
-#include <dlfcn.h>
-#include <setjmp.h>
-#include <signal.h>
-
-#define AFB_MSG_JTYPE "AJB_reply"
-
-#define JSON_CONTENT "application/json"
-#define FORM_CONTENT "multipart/form-data" /* TODO: replace with MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA */
-
-
-static json_object *afbJsonType;
-
-
-// Because of POST call multiple time requestApi we need to free POST handle here
-// Note this method is called from http-svc just before closing session
-PUBLIC void endPostRequest(AFB_PostHandle *postHandle) {
-
- if (postHandle->type == AFB_POST_JSON) {
- // if (verbose) fprintf(stderr, "End PostJson Request UID=%d\n", postHandle->uid);
- }
-
- if (postHandle->type == AFB_POST_FORM) {
- if (verbose) fprintf(stderr, "End PostForm Request UID=%d\n", postHandle->uid);
- }
- if (postHandle->privatebuf) free(postHandle->privatebuf);
- free(postHandle);
-}
-
-// Check of apiurl is declare in this plugin and call it
-STATIC AFB_error callPluginApi(AFB_request *request, int plugidx, void *context) {
- json_object *jresp, *jcall, *jreqt;
- int idx, status, sig;
- AFB_clientCtx *clientCtx = NULL;
- AFB_plugin *plugin = request->plugins[plugidx];
- int signals[]= {SIGALRM, SIGSEGV, SIGFPE, 0};
-
- /*---------------------------------------------------------------
- | Signal handler defined inside CallPluginApi to access Request
- +---------------------------------------------------------------- */
- void pluginError (int signum) {
- sigset_t sigset;
-
-
- // unlock signal to allow a new signal to come
- sigemptyset (&sigset);
- sigaddset (&sigset, signum);
- sigprocmask (SIG_UNBLOCK, &sigset, 0);
-
- fprintf (stderr, "Oops: Plugin Api Timeout timeout\n");
- longjmp (request->checkPluginCall, signum);
- }
-
-
- // If a plugin hold this urlpath call its callback
- for (idx = 0; plugin->apis[idx].callback != NULL; idx++) {
- if (!strcmp(plugin->apis[idx].name, request->api)) {
-
- // Request was found and at least partially executed
- jreqt = json_object_new_object();
- json_object_get (afbJsonType); // increate jsontype reference count
- json_object_object_add (jreqt, "jtype", afbJsonType);
-
- // prepare an object to store calling values
- jcall=json_object_new_object();
- json_object_object_add(jcall, "prefix", json_object_new_string (plugin->prefix));
- json_object_object_add(jcall, "api" , json_object_new_string (plugin->apis[idx].name));
-
- // save context before calling the API
- status = setjmp (request->checkPluginCall);
- if (status != 0) {
-
- // Plugin aborted somewhere during its execution
- json_object_object_add(jcall, "status", json_object_new_string ("abort"));
- json_object_object_add(jcall, "info" , json_object_new_string ("Plugin broke during execution"));
- json_object_object_add(jreqt, "request", jcall);
-
- } else {
-
- // If timeout protection==0 we are in debug and we do not apply signal protection
- if (request->config->apiTimeout > 0) {
- for (sig=0; signals[sig] != 0; sig++) {
- if (signal (signals[sig], pluginError) == SIG_ERR) {
- request->errcode = MHD_HTTP_UNPROCESSABLE_ENTITY;
- json_object_object_add(jcall, "status", json_object_new_string ("fail"));
- json_object_object_add(jcall, "info", json_object_new_string ("Setting Timeout Handler Failed"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- }
- }
- // Trigger a timer to protect from unacceptable long time execution
- alarm ((unsigned)request->config->apiTimeout);
- }
-
- // Out of SessionNone every call get a client context session
- if (AFB_SESSION_NONE != plugin->apis[idx].session) {
-
- // add client context to request
- clientCtx = ctxClientGet(request, plugidx);
- if (clientCtx == NULL) {
- request->errcode=MHD_HTTP_INSUFFICIENT_STORAGE;
- json_object_object_add(jcall, "status", json_object_new_string ("fail"));
- json_object_object_add(jcall, "info", json_object_new_string ("Client Session Context Full !!!"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- };
-
- if (verbose) fprintf(stderr, "Plugin=[%s] Api=[%s] Middleware=[%d] Client=[%p] Uuid=[%s] Token=[%s]\n"
- , request->prefix, request->api, plugin->apis[idx].session, clientCtx, clientCtx->uuid, clientCtx->token);
-
- switch(plugin->apis[idx].session) {
-
- case AFB_SESSION_CREATE:
- if (clientCtx->token[0] != '\0' && request->config->token[0] != '\0') {
- request->errcode=MHD_HTTP_UNAUTHORIZED;
- json_object_object_add(jcall, "status", json_object_new_string ("exist"));
- json_object_object_add(jcall, "info", json_object_new_string ("AFB_SESSION_CREATE Session already exist"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- }
-
- if (AFB_SUCCESS != ctxTokenCreate (clientCtx, request)) {
- request->errcode=MHD_HTTP_UNAUTHORIZED;
- json_object_object_add(jcall, "status", json_object_new_string ("fail"));
- json_object_object_add(jcall, "info", json_object_new_string ("AFB_SESSION_CREATE Invalid Initial Token"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- } else {
- json_object_object_add(jcall, "uuid", json_object_new_string (clientCtx->uuid));
- json_object_object_add(jcall, "token", json_object_new_string (clientCtx->token));
- json_object_object_add(jcall, "timeout", json_object_new_int (request->config->cntxTimeout));
- }
- break;
-
-
- case AFB_SESSION_RENEW:
- if (AFB_SUCCESS != ctxTokenRefresh (clientCtx, request)) {
- request->errcode=MHD_HTTP_UNAUTHORIZED;
- json_object_object_add(jcall, "status", json_object_new_string ("fail"));
- json_object_object_add(jcall, "info", json_object_new_string ("AFB_SESSION_REFRESH Broken Exchange Token Chain"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- } else {
- json_object_object_add(jcall, "uuid", json_object_new_string (clientCtx->uuid));
- json_object_object_add(jcall, "token", json_object_new_string (clientCtx->token));
- json_object_object_add(jcall, "timeout", json_object_new_int (request->config->cntxTimeout));
- }
- break;
-
- case AFB_SESSION_CLOSE:
- if (AFB_SUCCESS != ctxTokenCheck (clientCtx, request)) {
- request->errcode=MHD_HTTP_UNAUTHORIZED;
- json_object_object_add(jcall, "status", json_object_new_string ("empty"));
- json_object_object_add(jcall, "info", json_object_new_string ("AFB_SESSION_CLOSE Not a Valid Access Token"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- } else {
- json_object_object_add(jcall, "uuid", json_object_new_string (clientCtx->uuid));
- }
- break;
-
- case AFB_SESSION_CHECK:
- default:
- // default action is check
- if (AFB_SUCCESS != ctxTokenCheck (clientCtx, request)) {
- request->errcode=MHD_HTTP_UNAUTHORIZED;
- json_object_object_add(jcall, "status", json_object_new_string ("fail"));
- json_object_object_add(jcall, "info", json_object_new_string ("AFB_SESSION_CHECK Invalid Active Token"));
- json_object_object_add(jreqt, "request", jcall);
- goto ExitOnDone;
- }
- break;
- }
- }
-
- // Effectively CALL PLUGIN API with a subset of the context
- jresp = plugin->apis[idx].callback(request, context);
-
- // Store context in case it was updated by plugins
- if (request->context != NULL) clientCtx->contexts[plugidx] = request->context;
-
- // handle intermediary Post Iterates out of band
- if ((jresp == NULL) && (request->errcode == MHD_HTTP_OK)) return (AFB_SUCCESS);
-
- // Session close is done after the API call so API can still use session in closing API
- if (AFB_SESSION_CLOSE == plugin->apis[idx].session) ctxTokenReset (clientCtx, request);
-
- // API should return NULL of a valid Json Object
- if (jresp == NULL) {
- json_object_object_add(jcall, "status", json_object_new_string ("null"));
- json_object_object_add(jreqt, "request", jcall);
- request->errcode = MHD_HTTP_NO_RESPONSE;
-
- } else {
- json_object_object_add(jcall, "status", json_object_new_string ("processed"));
- json_object_object_add(jreqt, "request", jcall);
- json_object_object_add(jreqt, "response", jresp);
- }
- // cancel timeout and plugin signal handle before next call
- if (request->config->apiTimeout > 0) {
- alarm (0);
- for (sig=0; signals[sig] != 0; sig++) {
- signal (signals[sig], SIG_DFL);
- }
- }
- }
- goto ExitOnDone;
- }
- }
- return (AFB_FAIL);
-
-ExitOnDone:
- request->jresp = jreqt;
- return (AFB_DONE);
-}
-
-STATIC AFB_error findAndCallApi (AFB_request *request, void *context) {
- int idx;
- AFB_error status;
-
- if (!request->api || !request->prefix) return (AFB_FAIL);
-
- // Search for a plugin with this urlpath
- for (idx = 0; request->plugins[idx] != NULL; idx++) {
- if (!strcmp(request->plugins[idx]->prefix, request->prefix)) {
- status =callPluginApi(request, idx, context);
- break;
- }
- }
- // No plugin was found
- if (request->plugins[idx] == NULL) {
- request->jresp = jsonNewMessage(AFB_FATAL, "No Plugin=[%s] Url=%s", request->prefix, request->url);
- goto ExitOnError;
- }
-
- // plugin callback did not return a valid Json Object
- if (status == AFB_FAIL) {
- request->jresp = jsonNewMessage(AFB_FATAL, "No API=[%s] for Plugin=[%s] url=[%s]", request->api, request->prefix, request->url);
- goto ExitOnError;
- }
-
- // Everything look OK
- return (status);
-
-ExitOnError:
- request->errcode = MHD_HTTP_UNPROCESSABLE_ENTITY;
- return (AFB_FAIL);
-}
-
-// This CB is call for every item with a form post it reformat iterator values
-// and callback Plugin API for each Item within PostForm.
-STATIC int doPostIterate (void *cls, enum MHD_ValueKind kind, const char *key,
- const char *filename, const char *mimetype,
- const char *encoding, const char *data, uint64_t offset,
- size_t size) {
-
- AFB_error status;
- AFB_PostItem item;
-
- // retrieve API request from Post iterator handle
- AFB_PostHandle *postHandle = (AFB_PostHandle*)cls;
- AFB_request *request = (AFB_request*)postHandle->privatebuf;
- AFB_PostRequest postRequest;
-
- if (verbose)
- fprintf (stderr, "postHandle key=%s filename=%s len=%zu mime=%s\n", key, filename, size, mimetype);
-
- // Create and Item value for Plugin API
- item.kind = kind;
- item.key = key;
- item.filename = filename;
- item.mimetype = mimetype;
- item.encoding = encoding;
- item.len = size;
- item.data = data;
- item.offset = offset;
-
- // Reformat Request to make it somehow similar to GET/PostJson case
- postRequest.data= (char*) postHandle;
- postRequest.len = size;
- postRequest.type= AFB_POST_FORM;;
- request->post = &postRequest;
-
- // effectively call plugin API
- status = findAndCallApi (request, &item);
- // when returning no processing of postform stop
- if (status != AFB_SUCCESS) return MHD_NO;
-
- // let's allow iterator to move to next item
- return MHD_YES;
-}
-
-STATIC void freeRequest (AFB_request *request) {
-
- free (request->prefix);
- free (request->api);
- free (request);
-}
-
-STATIC AFB_request *createRequest (struct MHD_Connection *connection, AFB_session *session, const char* url) {
-
- AFB_request *request;
-
- // Start with a clean request
- request = calloc (1, sizeof (AFB_request));
- char *urlcpy1, *urlcpy2;
- char *baseapi, *baseurl;
-
- // Extract plugin urlpath from request and make two copy because strsep overload copy
- urlcpy1 = urlcpy2 = strdup(url);
- baseurl = strsep(&urlcpy2, "/");
- if (baseurl == NULL) {
- request->jresp = jsonNewMessage(AFB_FATAL, "Invalid API call url=[%s]", url);
- request->errcode = MHD_HTTP_BAD_REQUEST;
- goto Done;
- }
-
- // let's compute URL and call API
- baseapi = strsep(&urlcpy2, "/");
- if (baseapi == NULL) {
- request->jresp = jsonNewMessage(AFB_FATAL, "Invalid API call plugin=[%s] url=[%s]", baseurl, url);
- request->errcode = MHD_HTTP_BAD_REQUEST;
- goto Done;
- }
-
- // build request structure
- request->connection = connection;
- request->config = session->config;
- request->url = url;
- request->prefix = strdup (baseurl);
- request->api = strdup (baseapi);
- request->plugins= session->plugins;
- // note request->handle is fed with request->context in ctxClientGet
-
-Done:
- free(urlcpy1);
- return (request);
-}
-
-// process rest API query
-PUBLIC int doRestApi(struct MHD_Connection *connection, AFB_session *session, const char* url, const char *method
- , const char *upload_data, size_t *upload_data_size, void **con_cls) {
-
- static int postcount = 0; // static counter to debug POST protocol
- json_object *errMessage;
- AFB_error status;
- struct MHD_Response *webResponse;
- const char *serialized;
- AFB_request *request = NULL;
- AFB_PostHandle *postHandle;
- AFB_PostRequest postRequest;
- int ret;
-
- // fprintf (stderr, "doRestAPI method=%s posthandle=%p\n", method, con_cls);
-
- // if post data may come in multiple calls
- if (0 == strcmp(method, MHD_HTTP_METHOD_POST)) {
- const char *encoding, *param;
- int contentlen = -1;
- postHandle = *con_cls;
-
- // This is the initial post event let's create form post structure POST data come in multiple events
- if (postHandle == NULL) {
-
- // allocate application POST processor handle to zero
- postHandle = calloc(1, sizeof (AFB_PostHandle));
- postHandle->uid = postcount++; // build a UID for DEBUG
- *con_cls = postHandle; // update context with posthandle
-
- // Let make sure we have the right encoding and a valid length
- encoding = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_TYPE);
-
- // We are facing an empty post let's process it as a get
- if (encoding == NULL) {
- postHandle->type = AFB_POST_EMPTY;
- return MHD_YES;
- }
-
- // Form post is handle through a PostProcessor and call API once per form key
- if (strcasestr(encoding, FORM_CONTENT) != NULL) {
- if (verbose) fprintf(stderr, "Create doPostIterate[uid=%d posthandle=%p]\n", postHandle->uid, postHandle);
-
- request = createRequest (connection, session, url);
- if (request->jresp != NULL) goto ProcessApiCall;
- postHandle->type = AFB_POST_FORM;
- postHandle->privatebuf = (void*)request;
- postHandle->pp = MHD_create_post_processor (connection, MAX_POST_SIZE, &doPostIterate, postHandle);
-
- if (NULL == postHandle->pp) {
- fprintf(stderr,"OOPS: Internal error fail to allocate MHD_create_post_processor\n");
- free (postHandle);
- return MHD_NO;
- }
- return MHD_YES;
- }
-
- // POST json is store into a buffer and present in one piece to API
- if (strcasestr(encoding, JSON_CONTENT) != NULL) {
-
- param = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_LENGTH);
- if (param) sscanf(param, "%i", &contentlen);
-
- // Because PostJson are build in RAM size is constrained
- if (contentlen > MAX_POST_SIZE) {
- errMessage = jsonNewMessage(AFB_FATAL, "Post Date to big %d > %d", contentlen, MAX_POST_SIZE);
- goto ExitOnError;
- }
-
- // Size is OK, let's allocate a buffer to hold post data
- postHandle->type = AFB_POST_JSON;
- postHandle->privatebuf = malloc((unsigned)contentlen + 1); // allocate memory for full POST data + 1 for '\0' enf of string
-
- // if (verbose) fprintf(stderr, "Create PostJson[uid=%d] Size=%d\n", postHandle->uid, contentlen);
- return MHD_YES;
-
- } else {
- // We only support Json and Form Post format
- errMessage = jsonNewMessage(AFB_FATAL, "Post Date wrong type encoding=%s != %s", encoding, JSON_CONTENT);
- goto ExitOnError;
- }
- }
-
- // This time we receive partial/all Post data. Note that even if we get all POST data. We should nevertheless
- // return MHD_YES and not process the request directly. Otherwise Libmicrohttpd is unhappy and fails with
- // 'Internal application error, closing connection'.
- if (*upload_data_size) {
-
- if (postHandle->type == AFB_POST_FORM) {
- // if (verbose) fprintf(stderr, "Processing PostForm[uid=%d]\n", postHandle->uid);
- MHD_post_process (postHandle->pp, upload_data, *upload_data_size);
- }
-
- // Process JsonPost request when buffer is completed let's call API
- if (postHandle->type == AFB_POST_JSON) {
- // if (verbose) fprintf(stderr, "Updating PostJson[uid=%d]\n", postHandle->uid);
- memcpy(&postHandle->privatebuf[postHandle->len], upload_data, *upload_data_size);
- postHandle->len = postHandle->len + *upload_data_size;
- }
-
- *upload_data_size = 0;
- return MHD_YES;
-
- } else { // we have finish with Post reception let's finish the work
-
- // Create a request structure to finalise the request
- request= createRequest (connection, session, url);
- if (request->jresp != NULL) {
- errMessage = request->jresp;
- goto ExitOnError;
- }
- postRequest.type = postHandle->type;
-
- // Postform add application context handle to request
- if (postHandle->type == AFB_POST_FORM) {
- postRequest.data = (char*) postHandle;
- request->post = &postRequest;
- }
-
- if (postHandle->type == AFB_POST_JSON) {
- // if (verbose) fprintf(stderr, "Processing PostJson[uid=%d]\n", postHandle->uid);
-
- param = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_LENGTH);
- if (param) sscanf(param, "%i", &contentlen);
-
- // At this level we're may verify that we got everything and process DATA
- if (postHandle->len != contentlen) {
- errMessage = jsonNewMessage(AFB_FATAL, "Post Data Incomplete UID=%d Len %d != %d", postHandle->uid, contentlen, postHandle->len);
- goto ExitOnError;
- }
-
- // Before processing data, make sure buffer string is properly ended
- postHandle->privatebuf[postHandle->len] = '\0';
- postRequest.data = postHandle->privatebuf;
- request->post = &postRequest;
-
- // if (verbose) fprintf(stderr, "Close Post[%d] Buffer=%s\n", postHandle->uid, request->post->data);
- }
- }
- } else {
- // this is a get we only need a request
- request= createRequest (connection, session, url);
- };
-
-ProcessApiCall:
- // Request is ready let's call API without any extra handle
- status = findAndCallApi (request, NULL);
-
- serialized = json_object_to_json_string(request->jresp);
- webResponse = MHD_create_response_from_buffer(strlen(serialized), (void*) serialized, MHD_RESPMEM_MUST_COPY);
-
- // client did not pass token on URI let's use cookies
- if ((!request->restfull) && (request->context != NULL)) {
- char cookie[256];
- snprintf (cookie, sizeof (cookie), "%s-%d=%s; Path=%s; Max-Age=%d; HttpOnly", COOKIE_NAME, request->config->httpdPort, request->uuid, request->config->rootapi,request->config->cntxTimeout);
- MHD_add_response_header (webResponse, MHD_HTTP_HEADER_SET_COOKIE, cookie);
- }
-
- // if requested add an error status
- if (request->errcode != 0) ret=MHD_queue_response (connection, request->errcode, webResponse);
- else MHD_queue_response(connection, MHD_HTTP_OK, webResponse);
-
- MHD_destroy_response(webResponse);
- json_object_put(request->jresp); // decrease reference rqtcount to free the json object
- freeRequest (request);
- return MHD_YES;
-
-ExitOnError:
- freeRequest (request);
- serialized = json_object_to_json_string(errMessage);
- webResponse = MHD_create_response_from_buffer(strlen(serialized), (void*) serialized, MHD_RESPMEM_MUST_COPY);
- MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, webResponse);
- MHD_destroy_response(webResponse);
- json_object_put(errMessage); // decrease reference rqtcount to free the json object
- return MHD_YES;
-}
-
-
-// Loop on plugins. Check that they have the right type, prepare a JSON object with prefix
-STATIC AFB_plugin ** RegisterJsonPlugins(AFB_plugin **plugins) {
- int idx;
-
- for (idx = 0; plugins[idx] != NULL; idx++) {
- if (plugins[idx]->type != AFB_PLUGIN_JSON) {
- fprintf(stderr, "ERROR: AFSV plugin[%d] invalid type=%d != %d\n", idx, AFB_PLUGIN_JSON, plugins[idx]->type);
- } else {
- // some sanity controls
- if ((plugins[idx]->prefix == NULL) || (plugins[idx]->info == NULL) || (plugins[idx]->apis == NULL)) {
- if (plugins[idx]->prefix == NULL) plugins[idx]->prefix = "No URL prefix for APIs";
- if (plugins[idx]->info == NULL) plugins[idx]->info = "No Info describing plugin APIs";
- fprintf(stderr, "ERROR: plugin[%d] invalid prefix=%s info=%s", idx, plugins[idx]->prefix, plugins[idx]->info);
- return NULL;
- }
-
- if (verbose) fprintf(stderr, "Loading plugin[%d] prefix=[%s] info=%s\n", idx, plugins[idx]->prefix, plugins[idx]->info);
-
- // Prebuild plugin jtype to boost API response
- plugins[idx]->jtype = json_object_new_string(plugins[idx]->prefix);
- json_object_get(plugins[idx]->jtype); // increase reference count to make it permanent
- plugins[idx]->prefixlen = strlen(plugins[idx]->prefix);
- }
- }
- return (plugins);
-}
-
-STATIC void scanDirectory(char *dirpath, int dirfd, AFB_plugin **plugins, int *count) {
- DIR *dir;
- void *libso;
- struct dirent pluginDir, *result;
- AFB_plugin* (*pluginRegisterFct)(void);
- char pluginPath[255];
-
- // Open Directory to scan over it
- dir = fdopendir (dirfd);
- if (dir == NULL) {
- fprintf(stderr, "ERROR in scanning directory\n");
- return;
- }
- if (verbose) fprintf (stderr, "Scanning dir=[%s] for plugins\n", dirpath);
-
- for (;;) {
- readdir_r(dir, &pluginDir, &result);
- if (result == NULL) break;
-
- // Loop on any contained directory
- if ((pluginDir.d_type == DT_DIR) && (pluginDir.d_name[0] != '.')) {
- int fd = openat (dirfd, pluginDir.d_name, O_DIRECTORY);
- char newpath[255];
- strncpy (newpath, dirpath, sizeof(newpath));
- strncat (newpath, "/", sizeof(newpath));
- strncat (newpath, pluginDir.d_name, sizeof(newpath));
-
- scanDirectory (newpath, fd, plugins, count);
- close (fd);
-
- } else {
-
- // This is a file but not a plugin let's move to next directory element
- if (!strstr (pluginDir.d_name, ".so")) continue;
-
- // This is a loadable library let's check if it's a plugin
- snprintf (pluginPath, sizeof(pluginPath), "%s/%s", dirpath, pluginDir.d_name);
- libso = dlopen (pluginPath, RTLD_NOW | RTLD_LOCAL);
-
- // Load fail we ignore this .so file
- if (!libso) {
- fprintf(stderr, "[%s] is not loadable, continuing...\n", pluginDir.d_name);
- continue;
- }
-
- pluginRegisterFct = dlsym (libso, "pluginRegister");
-
- if (!pluginRegisterFct) {
- fprintf(stderr, "[%s] is not an AFB plugin, continuing...\n", pluginDir.d_name);
- continue;
- }
-
- // if max plugin is reached let's stop searching
- if (*count == AFB_MAX_PLUGINS) {
- fprintf(stderr, "[%s] is not loaded [Max Count=%d reached]\n", pluginDir.d_name, *count);
- continue;
- }
-
- if (verbose) fprintf(stderr, "[%s] is a valid AFB plugin, loading pos[%d]\n", pluginDir.d_name, *count);
- plugins[*count] = pluginRegisterFct();
- if (!plugins[*count]) {
- if (verbose) fprintf(stderr, "ERROR: plugin [%s] register function failed. continuing...\n", pluginDir.d_name);
- } else
- *count = *count +1;
- }
- }
- closedir (dir);
-}
-
-void initPlugins(AFB_session *session) {
- AFB_plugin **plugins;
-
- afbJsonType = json_object_new_string (AFB_MSG_JTYPE);
- int count = 0;
- char *dirpath;
- int dirfd;
-
- /* pre-allocate for AFB_MAX_PLUGINS plugins, we will downsize later */
- plugins = (AFB_plugin **) malloc (AFB_MAX_PLUGINS *sizeof(AFB_plugin*));
-
- // Loop on every directory passed in --plugins=xxx
- while ((dirpath = strsep(&session->config->ldpaths, ":"))) {
- // Ignore any directory we fail to open
- if ((dirfd = open(dirpath, O_DIRECTORY)) <= 0) {
- fprintf(stderr, "Invalid directory path=[%s]\n", dirpath);
- continue;
- }
- scanDirectory (dirpath, dirfd, plugins, &count);
- close (dirfd);
- }
-
- // downsize structure to effective number of loaded plugins
- plugins = (AFB_plugin **)realloc (plugins, (unsigned)(count+1)*sizeof(AFB_plugin*));
- plugins[count] = NULL;
-
- // complete plugins and save them within current sessions
- session->plugins = RegisterJsonPlugins(plugins);
- session->config->pluginCount = count;
-}
-