X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;ds=sidebyside;f=src%2Frest-api.c;h=e19e1f2be74922673cec37078e086ff4bdebcbfc;hb=06d422d1de5c505366f6a029d8af85548c2b646f;hp=74237adca7b2babe731699a9ad5c3a783f6f92b8;hpb=c2bda43c447016a20ed061078b0dff3e64d09940;p=src%2Fapp-framework-binder.git
diff --git a/src/rest-api.c b/src/rest-api.c
index 74237adc..e19e1f2b 100644
--- a/src/rest-api.c
+++ b/src/rest-api.c
@@ -16,179 +16,664 @@
* along with this program. If not, see .
*
* Contain all generic part to handle REST/API
+ *
+ * https://www.gnu.org/software/libmicrohttpd/tutorial.html [search 'largepost.c']
*/
-
-#include
-#include
#include "../include/local-def.h"
-// proto missing from GCC
-char *strcasestr(const char *haystack, const char *needle);
+#include
+#include
+#include
+#include
+
+#define AFB_MSG_JTYPE "AJB_reply"
+
+
+
+static json_object *afbJsonType;
// Because of POST call multiple time requestApi we need to free POST handle here
-STATIC void endRequest(void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_RequestTerminationCode toe) {
- AFB_HttpPost *posthandle = *con_cls;
-
- // if post handle was used let's free everything
- if (posthandle) {
- if (verbose) fprintf(stderr, "End Post Request UID=%d\n", posthandle->uid);
- free(posthandle->data);
- free(posthandle);
+// 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);
}
+ free(postHandle->private);
+ 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;
+ int idx, status, sig;
+ AFB_clientCtx *clientCtx;
+ 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:%s Plugin Api Timeout timeout\n", configTime());
+ 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
+ request->jresp = json_object_new_object();
+ json_object_get (afbJsonType); // increate jsontype reference count
+ json_object_object_add (request->jresp, "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(request->jresp, "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(request->jresp, "request", jcall);
+ return AFB_DONE;
+ }
+ }
+ // Trigger a timer to protect from unacceptable long time execution
+ alarm (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(request->jresp, "request", jcall);
+ return (AFB_DONE);
+ };
+
+ if (verbose) fprintf(stderr, "Plugin=[%s] Api=[%s] Middleware=[%d] Client=[0x%x] 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->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(request->jresp, "request", jcall);
+ return (AFB_DONE);
+ }
+
+ 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(request->jresp, "request", jcall);
+ return (AFB_DONE);
+ } 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;
+
-PUBLIC json_object* pingSample (AFB_plugin *plugin, AFB_session *session, AFB_request *post) {
- static pingcount=0;
- json_object *response;
- response = jsonNewMessage(AFB_SUCCESS, "Ping Binder Daemon %d", pingcount++);
- if (verbose) fprintf(stderr, "%d: \n", pingcount);
- return (response);
+ 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(request->jresp, "request", jcall);
+ return (AFB_DONE);
+ } 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(request->jresp, "request", jcall);
+ return (AFB_DONE);
+ } 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(request->jresp, "request", jcall);
+ return (AFB_DONE);
+ }
+ 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
+ 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(request->jresp, "request", jcall);
+ request->errcode = MHD_HTTP_NO_RESPONSE;
+
+ } else {
+ json_object_object_add(jcall, "status", json_object_new_string ("processed"));
+ json_object_object_add(request->jresp, "request", jcall);
+ json_object_object_add(request->jresp, "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);
+ }
+ }
+ }
+ return (AFB_DONE);
+ }
+ }
+ return (AFB_FAIL);
}
-// Check of apiurl is declare in this plugin and call it
-STATIC json_object * callPluginApi (AFB_plugin *plugin, AFB_session *session, AFB_request *request) {
- json_object *response;
+STATIC AFB_error findAndCallApi (AFB_request *request, void *context) {
int idx;
+ AFB_error status;
- // 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)) {
- response = plugin->apis[idx].callback (session, request);
- if (response != NULL) {
- json_object_object_add (response, "jtype" ,plugin->jtype);
- }
- return (response);
- }
+ 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;
+ }
}
- return (NULL);
+ // 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.
+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->private;
+ AFB_PostRequest postRequest;
+
+ fprintf (stderr, "postHandle key=%s filename=%s len=%d 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);
+}
-// process rest API query
-PUBLIC int doRestApi(struct MHD_Connection *connection, AFB_session *session, const char *method, const char* url) {
+STATIC void freeRequest (AFB_request *request) {
- char *baseurl, *baseapi, *urlcpy;
- json_object *jsonResponse, *errMessage;
- struct MHD_Response *webResponse;
- const char *serialized, parsedurl;
- AFB_request request;
- int idx, ret;
+ free (request->prefix);
+ free (request->api);
+ free (request);
+}
- // Extract plugin urlpath from request
- urlcpy=strdup (url);
- baseurl = strsep(&urlcpy, "/");
+STATIC AFB_request *createRequest (struct MHD_Connection *connection, AFB_session *session, const char* url) {
+
+ AFB_request *request;
+ int idx;
+
+ // 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) {
- errMessage = jsonNewMessage(AFB_FATAL, "Invalid Plugin/API call url=%s", url);
- goto ExitOnError;
+ request->jresp = jsonNewMessage(AFB_FATAL, "Invalid API call url=[%s]", url);
+ request->errcode = MHD_HTTP_BAD_REQUEST;
+ goto Done;
}
-
- baseapi = strsep(&urlcpy, "/");
+
+ // let's compute URL and call API
+ baseapi = strsep(&urlcpy2, "/");
if (baseapi == NULL) {
- errMessage = jsonNewMessage(AFB_FATAL, "Invalid Plugin/API call url=%s/%s", baseurl, url);
- goto ExitOnError;
+ 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
- memset (&request, 0, sizeof (request));
- request.connection = connection;
- request.url = url;
- request.plugin = baseurl;
- request.api = baseapi;
-
- // if post wait as data may come in multiple calls
- if (0 == strcmp (method, MHD_HTTP_METHOD_POST)) {
-
- request.post="TO Be DONE";
- } else {
- request.post=NULL;
- };
+ 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) {
- // Search for a plugin with this urlpath
- for (idx=0; session->plugins[idx] != NULL; idx++) {
- if (!strcmp (session->plugins[idx]->prefix, baseurl)) {
- jsonResponse = callPluginApi (session->plugins[idx], session, &request );
- // free (urlcpy);
- break;
+ 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;
+ AFB_PostHandle *postHandle;
+ AFB_PostRequest postRequest;
+ int ret;
+
+ // 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 datas 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) {
+ request= createRequest (connection, session, url);
+ goto ProcessApiCall;
+ }
+
+ // 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 PostForm[uid=%d]\n", postHandle->uid);
+
+ request = createRequest (connection, session, url);
+ if (request->jresp != NULL) goto ProcessApiCall;
+
+ postHandle = malloc(sizeof (AFB_PostHandle)); // allocate application POST processor handle
+ postHandle->type = AFB_POST_FORM;
+ postHandle->pp = MHD_create_post_processor (connection, MAX_POST_SIZE, doPostIterate, postHandle);
+ postHandle->private= (void*)request;
+
+ 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->private = malloc(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;
+ }
}
- }
- // No plugin was found
- if (session->plugins[idx] == NULL) {
- errMessage = jsonNewMessage(AFB_FATAL, "No Plugin for %s", baseurl);
- free (urlcpy);
- goto ExitOnError;
- }
- // plugin callback did not return a valid Json Object
- if (jsonResponse == NULL) {
- errMessage = jsonNewMessage(AFB_FATAL, "No Plugin/API for %s/%s", baseurl, baseapi);
- 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->private[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;
+ }
+
+ // Postform add application context handle to request
+ if (postHandle->type == AFB_POST_FORM) {
+ postRequest.data = (char*) postHandle;
+ postRequest.type = postHandle->type;
+ request->post = &postRequest;
+ }
+
+ if (postHandle->type == AFB_POST_JSON) {
+ // if (verbose) fprintf(stderr, "Processing PostJson[uid=%d]\n", postHandle->uid);
- serialized = json_object_to_json_string(jsonResponse);
- webResponse = MHD_create_response_from_buffer(strlen(serialized), (void*) serialized, MHD_RESPMEM_MUST_COPY);
+ 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->private[postHandle->len] = '\0';
+ postRequest.data = postHandle->private;
+ postRequest.type = postHandle->type;
+ request->post = &postRequest;
- ret = MHD_queue_response(connection, MHD_HTTP_OK, webResponse);
+ // 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[64];
+ snprintf (cookie, sizeof (cookie), "%s=%s", COOKIE_NAME, request->uuid);
+ 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(jsonResponse); // decrease reference rqtcount to free the json object
- return ret;
+ 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);
- ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, webResponse);
+ 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 ret;
+ return MHD_YES;
}
-// Helper to retreive argument from connection
-PUBLIC const char* getQueryValue (AFB_request * request, char *name) {
- const char *value;
-
- value=MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, name);
- return (value);
-}
// Loop on plugins. Check that they have the right type, prepare a JSON object with prefix
-STATIC AFB_plugin ** RegisterPlugins(AFB_plugin **plugins) {
- int idx;
-
- for (idx=0; plugins[idx] != NULL; idx++) {
- if (plugins[idx]->type != AFB_PLUGIN) {
- fprintf (stderr, "ERROR: AFSV plugin[%d] invalid type=%d != %d\n", idx, AFB_PLUGIN, plugins[idx]->type);
+STATIC AFB_plugin ** RegisterJsonPlugins(AFB_plugin **plugins) {
+ int idx, jdx;
+
+ 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]->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);
+ 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);
- if (verbose) fprintf (stderr, "Loading plugin[%d] prefix=[%s] info=%s\n", idx, plugins[idx]->prefix, plugins[idx]->info);
-
- // Prepare Plugin name to be added into each 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
+ // 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);
- // compute urlprefix lenght
- plugins[idx]->prefixlen = strlen (plugins[idx]->prefix);
- }
+
+ // Prebuild each API jtype to boost API json response
+ for (jdx = 0; plugins[idx]->apis[jdx].name != NULL; jdx++) {
+ AFB_privateApi *private = malloc (sizeof (AFB_privateApi));
+ if (plugins[idx]->apis[jdx].private != NULL) {
+ fprintf (stderr, "WARNING: plugin=%s api=%s private handle should be NULL=0x%x\n"
+ ,plugins[idx]->prefix,plugins[idx]->apis[jdx].name, plugins[idx]->apis[jdx].private);
+ }
+ private->len = strlen (plugins[idx]->apis[jdx].name);
+ private->jtype=json_object_new_string(plugins[idx]->apis[jdx].name);
+ json_object_get(private->jtype); // increase reference count to make it permanent
+ plugins[idx]->apis[jdx].private = private;
+ }
+ }
}
return (plugins);
}
-void initPlugins (AFB_session *session) {
- static AFB_plugin *plugins[10];
+STATIC void scanDirectory(char *dirpath, int dirfd, AFB_plugin **plugins, int *count) {
+ DIR *dir;
+ void *libso;
+ struct dirent *pluginDir;
+ 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);
+
+ while ((pluginDir = readdir(dir)) != NULL) {
+
+ // 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);
- plugins[0]= afsvRegister (session),
- plugins[1]= dbusRegister (session),
- plugins[2]= alsaRegister (session),
- plugins[3]= NULL;
+ // 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");
+ free (libso);
+
+ 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", *count);
+ continue;
+ }
+
+ if (verbose) fprintf(stderr, "[%s] is a valid AFB plugin, loading pos[%d]\n", pluginDir->d_name, *count);
+ plugins[*count] = (AFB_plugin *) malloc (sizeof(AFB_plugin));
+ plugins[*count] = (**pluginRegisterFct)();
+ *count = *count +1;
+
+ }
+ }
+ closedir (dir);
+}
+
+void initPlugins(AFB_session *session) {
+ static 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);
+ }
+
+ if (count == 0) {
+ fprintf(stderr, "No plugins found, afb-daemon is unlikely to work in this configuration, exiting...\n");
+ exit (-1);
+ }
+
+ // downsize structure to effective number of loaded plugins
+ plugins = (AFB_plugin **)realloc (plugins, (count+1)*sizeof(AFB_plugin));
+ plugins[count] = NULL;
// complete plugins and save them within current sessions
- session->plugins= RegisterPlugins (plugins);
-}
\ No newline at end of file
+ session->plugins = RegisterJsonPlugins(plugins);
+ session->config->pluginCount = count;
+}