+// Dummy sample of Client Application Context
+typedef struct {
+ int something;
+ void *whateveryouwant;
+} MyClientApplicationHandle;
+
+
+// Request Creation of new context if it does not exist
+STATIC json_object* clientContextCreate (AFB_request *request) {
+ json_object *jresp;
+ int res;
+ char *token;
+ AFB_clientCtx *client=request->client; // get client context from request
+
+ // check we do not already have a session
+ if ((client != NULL) && (client->ctx != NULL)) {
+ request->errcode=MHD_HTTP_FORBIDDEN;
+ return (jsonNewMessage(AFB_FAIL, "Token exist use refresh"));
+ }
+
+ // request a new client context token and check result
+ if (AFB_UNAUTH == ctxTokenCreate (request)) {
+ request->errcode=MHD_HTTP_UNAUTHORIZED;
+ jresp= jsonNewMessage(AFB_FAIL, "No/Invalid initial token provided [should match --token=xxxx]");
+ return (jresp);
+ }
+
+ // request a new client context token and check result
+ if (AFB_SUCCESS != ctxTokenCreate (request)) {
+ request->errcode=MHD_HTTP_UNAUTHORIZED;
+ jresp= jsonNewMessage(AFB_FAIL, "Token Session Not Activated [restart with --token=xxxx]");
+ return (jresp);
+ }
+
+ // add a client context to session
+ client->ctx = malloc (sizeof (MyClientApplicationHandle));
+
+ // Send response to UI
+ jresp = json_object_new_object();
+ json_object_object_add(jresp, "token", json_object_new_string (client->token));
+
+ return (jresp);
+}
+
+// Renew an existing context
+STATIC json_object* clientContextRefresh (AFB_request *request) {
+ json_object *jresp;
+
+ // note: we do not need to parse the old token as clientContextRefresh doit for us
+ if (AFB_SUCCESS != ctxTokenRefresh (request)) {
+ request->errcode=MHD_HTTP_UNAUTHORIZED;
+ jresp= jsonNewMessage(AFB_FAIL, "Token Exchange Broken Refresh Refused");
+ } else {
+ jresp = json_object_new_object();
+ json_object_object_add(jresp, "token", json_object_new_string (request->client->token));
+ }
+
+ return (jresp);
+}
+
+
+// Verify a context is still valid
+STATIC json_object* clientContextCheck (AFB_request *request) {
+
+ json_object *jresp = json_object_new_object();
+
+ // add an error code to respond
+ if (AFB_SUCCESS != ctxTokenCheck (request)) {
+ request->errcode=MHD_HTTP_UNAUTHORIZED;
+ json_object_object_add(jresp, "isvalid", json_object_new_boolean (FALSE));
+ } else {
+ json_object_object_add(jresp, "isvalid", json_object_new_boolean (TRUE));
+ }
+
+ return (jresp);
+}
+
+
+
+// Close and Free context
+STATIC json_object* clientContextReset (AFB_request *request) {
+ json_object *jresp;
+
+ // note: we do not need to parse the old token as clientContextRefresh doit for us
+ if (AFB_SUCCESS != ctxTokenReset (request)) {
+ request->errcode=MHD_HTTP_UNAUTHORIZED;
+ jresp= jsonNewMessage(AFB_FAIL, "No Token Client Context [use --token=xxx]");
+ } else {
+ jresp = json_object_new_object();
+ json_object_object_add(jresp, "uuid", json_object_new_string (request->client->uuid));
+ }
+
+ return (jresp);
+}
+
+// In this case or handle is quite basic
+typedef struct {
+ int fd;
+} appPostCtx;
+
+// This function is call when PostForm processing is completed
+STATIC void DonePostForm (AFB_request *request) {
+ AFB_PostHandle *postHandle = (AFB_PostHandle*)request->post->data;
+ appPostCtx *appCtx= postHandle->ctx;
+
+ // Close upload file ID
+ close (appCtx->fd);
+
+ // Free application specific handle
+ free (postHandle->ctx);
+
+ if (verbose) fprintf (stderr, "DonePostForm upload done\n");
+}
+
+
+// WARNING: PostForm callback are call multiple time (one or each key within form)
+// When processing POST_JSON request->data hold a PostHandle and not data directly as for POST_JSON
+STATIC json_object* ProcessPostForm (AFB_request *request, AFB_PostItem *item) {
+
+ AFB_PostHandle *postHandle;
+ appPostCtx *appCtx;
+ char filepath[512];
+
+ // When Post is fully processed the same callback is call with a item==NULL
+ if (item == NULL) {
+ // Close file, Free handle
+
+ request->errcode = MHD_HTTP_OK;
+ return(jsonNewMessage(AFB_SUCCESS,"File [%s] uploaded at [%s] error=\n", item->filename, request->config->sessiondir));
+ }
+
+ // Let's make sure this is a valid PostForm request
+ if (!request->post && request->post->type != AFB_POST_FORM) {
+ request->errcode = MHD_HTTP_FORBIDDEN;
+ return(jsonNewMessage(AFB_FAIL,"This is not a valid PostForm request\n"));
+ } else {
+ // In AFB_POST_FORM case post->data is a PostForm handle
+ postHandle = (AFB_PostHandle*) request->post->data;
+ appCtx = (appPostCtx*) postHandle->ctx;
+ }
+
+ // Check this is a file element
+ if (0 != strcmp (item->key, "file")) {
+ request->errcode = MHD_HTTP_FORBIDDEN;
+ return (jsonNewMessage(AFB_FAIL,"No File within element key=%s\n", item->key));
+ }
+
+ // This is the 1st Item iteration let's open output file and allocate necessary resources
+ if (postHandle->ctx == NULL) {
+ int fd;
+
+ strncpy (filepath, request->config->sessiondir, sizeof(filepath));
+ strncat (filepath, "/", sizeof(filepath));
+ strncat (filepath, item->filename, sizeof(filepath));
+
+ if((fd = open(request->config->sessiondir, O_RDONLY)) < 0) {
+ request->errcode = MHD_HTTP_FORBIDDEN;
+ return (jsonNewMessage(AFB_FAIL,"Fail to Upload file [%s] at [%s] error=\n", item->filename, request->config->sessiondir, strerror(errno)));
+ };
+
+ // Create an application specific context
+ appCtx = malloc (sizeof(appPostCtx)); // May place anything here until post->completeCB handle resources liberation
+ appCtx->fd = fd;
+
+ // attach application to postHandle
+ postHandle->ctx = (void*) appCtx; // May place anything here until post->completeCB handle resources liberation
+ postHandle->completeCB = (AFB_apiCB)DonePostForm; // CallBack when Form Processing is finished
+
+ } else {
+ // this is not the call, FD is already open
+ appCtx = (appPostCtx*) postHandle->ctx;
+ }
+
+ // We have something to write
+ if (item->len > 0) {
+
+ if (!write (appCtx->fd, item->data, item->len)) {
+ request->errcode = MHD_HTTP_FORBIDDEN;
+ return (jsonNewMessage(AFB_FAIL,"Fail to write file [%s] at [%s] error=\n", item->filename, strerror(errno)));
+ }
+ }
+
+ // every event should return Sucess or Form processing stop
+ request->errcode = MHD_HTTP_OK;
+ return NULL;
+}