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Diffstat (limited to 'plugins/samples/SamplePost.c')
| -rw-r--r-- | plugins/samples/SamplePost.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/plugins/samples/SamplePost.c b/plugins/samples/SamplePost.c new file mode 100644 index 00000000..9e1c7660 --- /dev/null +++ b/plugins/samples/SamplePost.c @@ -0,0 +1,194 @@ +/* + * 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/>. + */ + + +#include "local-def.h" + +// 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; + + // add an application specific client context to session + request->client->ctx = malloc (sizeof (MyClientApplicationHandle)); + + // Send response to UI + jresp = json_object_new_object(); + json_object_object_add(jresp, "token", json_object_new_string ("A New Token and Session Context Was Created")); + + return (jresp); +} + +// Before entering here token will be check and renew +STATIC json_object* clientContextRefresh (AFB_request *request) { + json_object *jresp; + + + jresp = json_object_new_object(); + json_object_object_add(jresp, "token", json_object_new_string ("Token was refreshed")); + + return (jresp); +} + + +// Session token will we verified before entering here +STATIC json_object* clientContextCheck (AFB_request *request) { + + json_object *jresp = json_object_new_object(); + 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; + + 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; +} + +// This function is call when Client Session Context is removed +// Note: when freeCtxCB==NULL standard free/malloc is called +STATIC void clientContextFree(AFB_clientCtx *client) { + fprintf (stderr,"Plugin[%s] Closing Session uuid=[%s]\n", client->plugin->prefix, client->uuid); + free (client->ctx); +} + +STATIC AFB_restapi pluginApis[]= { + {"ping" , AFB_SESSION_NONE , (AFB_apiCB)apiPingTest ,"Ping Rest Test Service"}, + {"token-create" , AFB_SESSION_CREATE, (AFB_apiCB)clientContextCreate ,"Request Client Context Creation"}, + {"token-refresh" , AFB_SESSION_RENEW , (AFB_apiCB)clientContextRefresh,"Refresh Client Context Token"}, + {"token-check" , AFB_SESSION_CHECK , (AFB_apiCB)clientContextCheck ,"Check Client Context Token"}, + {"token-reset" , AFB_SESSION_CLOSE , (AFB_apiCB)clientContextReset ,"Close Client Context and Free resources"}, + {"file-upload" , AFB_SESSION_NONE , (AFB_apiCB)ProcessPostForm ,"Demo for file upload"}, + {NULL} +}; + +PUBLIC AFB_plugin *afsvRegister () { + AFB_plugin *plugin = malloc (sizeof (AFB_plugin)); + plugin->type = AFB_PLUGIN_JSON; + plugin->info = "Application Framework Binder Service"; + plugin->prefix= "afbs"; // url base + plugin->apis = pluginApis; + plugin->handle= (void*) "What ever you want"; + plugin->freeCtxCB= (void*) clientContextFree; + + return (plugin); +};
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