X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Frest-api.c;h=643acb57d2240451c35cd2b22a50f3a5a1c2a9fb;hb=3a10185ae380956bd356c73f34138f97255bf7e6;hp=cf13a7c9d72a48bb6df5781d703a293d51aad059;hpb=a644a48c2dfdc4ba5129aa3b85a21aadc429f65d;p=src%2Fapp-framework-binder.git diff --git a/src/rest-api.c b/src/rest-api.c index cf13a7c9..643acb57 100644 --- a/src/rest-api.c +++ b/src/rest-api.c @@ -17,107 +17,44 @@ * * Contain all generic part to handle REST/API * - * https://www.gnu.org/software/libmicrohttpd/tutorial.html [search 'FILE *fp'] + * https://www.gnu.org/software/libmicrohttpd/tutorial.html [search 'largepost.c'] */ #include "../include/local-def.h" +#include +#include #include #include #define AFB_MSG_JTYPE "AJB_reply" -// handle to hold queryAll values -typedef struct { - char *msg; - int idx; - size_t len; -} queryHandleT; static json_object *afbJsonType; -// Sample Generic Ping Debug API -PUBLIC json_object* apiPingTest(AFB_request *request) { - static pingcount = 0; - json_object *response; - char query [256]; - char session[256]; - - int len; - AFB_clientCtx *client=request->client; // get client context from request - - // request all query key/value - len = getQueryAll (request, query, sizeof(query)); - if (len == 0) strncpy (query, "NoSearchQueryList", sizeof(query)); - - // check if we have some post data - if (request->post == NULL) request->post="NoData"; - - // check is we have a session and a plugin handle - if (client == NULL) strcpy (session,"NoSession"); - else snprintf(session, sizeof(session),"uuid=%s token=%s ctx=0x%x handle=0x%x", client->uuid, client->token, client->ctx, client->ctx); - - // return response to caller - response = jsonNewMessage(AFB_SUCCESS, "Ping Binder Daemon count=%d CtxtId=%d query={%s} session={%s} PostData: [%s] " - , pingcount++, request->client->cid, query, session, request->post); - return (response); -} - -// Helper to retrieve 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); -} - -STATIC int getQueryCB (void*handle, enum MHD_ValueKind kind, const char *key, const char *value) { - queryHandleT *query = (queryHandleT*)handle; - - query->idx += snprintf (&query->msg[query->idx],query->len," %s: \'%s\',", key, value); -} - -// Helper to retrieve argument from connection -PUBLIC int getQueryAll(AFB_request * request, char *buffer, size_t len) { - queryHandleT query; - buffer[0] = '\0'; // start with an empty string - query.msg= buffer; - query.len= len; - query.idx= 0; - - MHD_get_connection_values (request->connection, MHD_GET_ARGUMENT_KIND, getQueryCB, &query); - return (len); -} - // Because of POST call multiple time requestApi we need to free POST handle here -PUBLIC void endPostRequest(AFB_PostHandle *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_JSON) { + // if (verbose) fprintf(stderr, "End PostJson Request UID=%d\n", postHandle->uid); } - if (posthandle->type == AFB_POST_FORM) { - AFB_PostHandle *postform = (AFB_PostHandle*) posthandle->private; - if (verbose) fprintf(stderr, "End PostForm Request UID=%d\n", posthandle->uid); - - // call API termination callback - if (!posthandle->private) { - - && !posthandle->private->completeCB) { - posthandle->private->completeCB (posthandle->private); - } + if (postHandle->type == AFB_POST_FORM) { + if (verbose) fprintf(stderr, "End PostForm Request UID=%d\n", postHandle->uid); } - freeRequest (posthandle->private); - free(posthandle); - + if (postHandle->privatebuf) free(postHandle->privatebuf); + free(postHandle); } // Check of apiurl is declare in this plugin and call it -STATIC AFB_error callPluginApi(AFB_plugin *plugin, AFB_request *request) { - json_object *jresp, *jcall; +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}; /*--------------------------------------------------------------- @@ -125,8 +62,8 @@ STATIC AFB_error callPluginApi(AFB_plugin *plugin, AFB_request *request) { +---------------------------------------------------------------- */ void pluginError (int signum) { sigset_t sigset; - AFB_clientCtx *context; - + + // unlock signal to allow a new signal to come sigemptyset (&sigset); sigaddset (&sigset, signum); @@ -141,6 +78,11 @@ STATIC AFB_error callPluginApi(AFB_plugin *plugin, AFB_request *request) { 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)); @@ -153,7 +95,7 @@ STATIC AFB_error callPluginApi(AFB_plugin *plugin, AFB_request *request) { // 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); + json_object_object_add(jreqt, "request", jcall); } else { @@ -161,36 +103,120 @@ STATIC AFB_error callPluginApi(AFB_plugin *plugin, AFB_request *request) { 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; - request->jresp = jsonNewMessage(AFB_FATAL, "%s ERR: Signal/timeout handler activation fail.", configTime()); - return AFB_FAIL; + 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 (request->config->apiTimeout); + 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); - // add client context to request - ctxClientGet(request, plugin); - - // Effectively call the API with a subset of the context - jresp = plugin->apis[idx].callback(request); - - // Allocate Json object and build response - request->jresp = json_object_new_object(); - json_object_get (afbJsonType); // increate jsontype reference count - json_object_object_add (request->jresp, "jtype", afbJsonType); + // 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(request->jresp, "request", jcall); + 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(request->jresp, "request", jcall); - json_object_object_add(request->jresp, "response", jresp); + 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) { @@ -200,36 +226,41 @@ STATIC AFB_error callPluginApi(AFB_plugin *plugin, AFB_request *request) { } } } - return (AFB_DONE); + goto ExitOnDone; } - } + } return (AFB_FAIL); + +ExitOnDone: + request->jresp = jreqt; + return (AFB_DONE); } -STATIC AFB_error findAndCallApi (AFB_request *request, void *extractx) { +STATIC AFB_error findAndCallApi (AFB_request *request, void *context) { int idx; - char *baseurl, *baseapi; 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, baseurl)) { - status =callPluginApi(request->plugins[idx], request, extractx); + 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]", request->plugin); + 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_DONE) { - request->jresp = jsonNewMessage(AFB_FATAL, "No API=[%s] for Plugin=[%s]", request->api, request->plugin); + 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); @@ -240,19 +271,21 @@ ExitOnError: // 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, +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 off, + const char *encoding, const char *data, uint64_t offset, size_t size) { AFB_error status; - AFB_HttpItem item; + AFB_PostItem item; // retrieve API request from Post iterator handle - AFB_PostHandle *postctx = (AFB_PostHandle*)cls; - AFB_request *request = (AFB_request*)post->private; - AFB_PostRequest post; + 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; @@ -262,26 +295,26 @@ doPostIterate (void *cls, enum MHD_ValueKind kind, const char *key, item.encoding = encoding; item.len = size; item.data = data; - item.off = off; + item.offset = offset; // Reformat Request to make it somehow similar to GET/PostJson case - post.data= (char*) postctx; - post.len = size; - post.type= AFB_POST_FORM;; - request->post = &post; + 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;); + return MHD_YES; } STATIC void freeRequest (AFB_request *request) { - free (request->plugin); + + free (request->prefix); free (request->api); free (request); } @@ -289,35 +322,41 @@ STATIC void freeRequest (AFB_request *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 *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 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; } // let's compute URL and call API baseapi = strsep(&urlcpy2, "/"); if (baseapi == NULL) { - errMessage = jsonNewMessage(AFB_FATAL, "Invalid API call url=[%s]", 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 request->connection = connection; - request->config = session.config; + request->config = session->config; request->url = url; - request->plugin = strdup (baseurl); + 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 @@ -329,41 +368,49 @@ PUBLIC int doRestApi(struct MHD_Connection *connection, AFB_session *session, co AFB_error status; struct MHD_Response *webResponse; const char *serialized; - AFB_request request; - AFB_PostHandle *posthandle = *con_cls; + 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; - AFB_PostHandle *posthandle = *con_cls; + postHandle = *con_cls; - // This is the initial post event let's create form post structure POST datas come in multiple events - if (posthandle == NULL) { - fprintf(stderr, "This is the 1st Post Event postuid=%d\n", posthandle->uid); + // 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 = cmalloc(1, sizeof (AFB_PostHandle)); - posthandle->uid = postcount++; // build a UID for DEBUG - *con_cls = posthandle; // attache POST handle to current HTTP request + 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); - param = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_LENGTH); - if (param) sscanf(param, "%i", &contentlen); + + // 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) { - - posthandle = malloc(sizeof (AFB_PostHandle)); // allocate application POST processor handle - posthandle->type = AFB_POST_FORM; - posthandle->private= (void*)createRequest (connection, session, url); - posthandle->pp = MHD_create_post_processor (connection, MAX_POST_SIZE, doPostIterate, posthandle); - - if (NULL == posthandle->pp) { + 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); + free (postHandle); return MHD_NO; } return MHD_YES; @@ -372,95 +419,111 @@ PUBLIC int doRestApi(struct MHD_Connection *connection, AFB_session *session, co // 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; } - if (posthandle == NULL) { - posthandle->type = AFB_POST_JSON; - posthandle->private = malloc(contentlen + 1); // allocate memory for full POST data + 1 for '\0' enf of string + // 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[%d] Size=%d\n", posthandle->uid, contentlen); - return MHD_YES; - } + // 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; - } + 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 (verbose) fprintf(stderr, "Update Post[%d]\n", posthandle->uid); - if (posthandle->type == AFB_POST_FORM) { - MHD_post_process (con_info->postprocessor, upload_data, *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) { - - memcpy(&posthandle->private[posthandle->len], upload_data, *upload_data_size); - posthandle->len = posthandle->len + *upload_data_size; - *upload_data_size = 0; + 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); - - // We should only start to process DATA after Libmicrohttpd call or application handler with *upload_data_size==0 - if (posthandle->type == AFB_POST_FORM) { - MHD_post_process (posthandle->pp, upload_data, *upload_data_size); + 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 (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 != %s", posthandle->uid, contentlen, posthandle->len); + 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'; - request->post.data = posthandle->private; - request->post.type = posthandle->type; + 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); + // 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); - -ExitOnResponse: - freeRequest (request); - serialized = json_object_to_json_string(request.jresp); + + 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.client != NULL)) { - char cookie[64]; - snprintf (cookie, sizeof (cookie), "%s=%s", COOKIE_NAME, request.client->uuid); + 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); + 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 + json_object_put(request->jresp); // decrease reference rqtcount to free the json object + freeRequest (request); return MHD_YES; ExitOnError: @@ -476,7 +539,7 @@ ExitOnError: // 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, jdx; + int idx; for (idx = 0; plugins[idx] != NULL; idx++) { if (plugins[idx]->type != AFB_PLUGIN_JSON) { @@ -496,38 +559,112 @@ STATIC AFB_plugin ** RegisterJsonPlugins(AFB_plugin **plugins) { 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); - - - // 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); } +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) { - static AFB_plugin * plugins[10]; + AFB_plugin **plugins; + afbJsonType = json_object_new_string (AFB_MSG_JTYPE); - int i = 0; - - plugins[i++] = afsvRegister(session), - plugins[i++] = dbusRegister(session), - plugins[i++] = alsaRegister(session), -#ifdef HAVE_RADIO_PLUGIN - plugins[i++] = radioRegister(session), -#endif - plugins[i++] = NULL; + 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, (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; }