2 * Copyright (C) 2015 "IoT.bzh"
3 * Author "Fulup Ar Foll"
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "local-def.h"
22 // Dummy sample of Client Application Context
25 void *whateveryouwant;
26 } MyClientApplicationHandle;
29 // Request Creation of new context if it does not exist
30 STATIC json_object* clientContextCreate (AFB_request *request) {
34 AFB_clientCtx *client=request->client; // get client context from request
36 // check we do not already have a session
37 if ((client != NULL) && (client->ctx != NULL)) {
38 request->errcode=MHD_HTTP_FORBIDDEN;
39 return (jsonNewMessage(AFB_FAIL, "Token exist use refresh"));
42 // request a new client context token and check result
43 if (AFB_UNAUTH == ctxTokenCreate (request)) {
44 request->errcode=MHD_HTTP_UNAUTHORIZED;
45 jresp= jsonNewMessage(AFB_FAIL, "No/Invalid initial token provided [should match --token=xxxx]");
49 // request a new client context token and check result
50 if (AFB_SUCCESS != ctxTokenCreate (request)) {
51 request->errcode=MHD_HTTP_UNAUTHORIZED;
52 jresp= jsonNewMessage(AFB_FAIL, "Token Session Not Activated [restart with --token=xxxx]");
56 // add a client context to session
57 client->ctx = malloc (sizeof (MyClientApplicationHandle));
59 // Send response to UI
60 jresp = json_object_new_object();
61 json_object_object_add(jresp, "token", json_object_new_string (client->token));
66 // Renew an existing context
67 STATIC json_object* clientContextRefresh (AFB_request *request) {
70 // note: we do not need to parse the old token as clientContextRefresh doit for us
71 if (AFB_SUCCESS != ctxTokenRefresh (request)) {
72 request->errcode=MHD_HTTP_UNAUTHORIZED;
73 jresp= jsonNewMessage(AFB_FAIL, "Token Exchange Broken Refresh Refused");
75 jresp = json_object_new_object();
76 json_object_object_add(jresp, "token", json_object_new_string (request->client->token));
83 // Verify a context is still valid
84 STATIC json_object* clientContextCheck (AFB_request *request) {
86 json_object *jresp = json_object_new_object();
88 // add an error code to respond
89 if (AFB_SUCCESS != ctxTokenCheck (request)) {
90 request->errcode=MHD_HTTP_UNAUTHORIZED;
91 json_object_object_add(jresp, "isvalid", json_object_new_boolean (FALSE));
93 json_object_object_add(jresp, "isvalid", json_object_new_boolean (TRUE));
101 // Close and Free context
102 STATIC json_object* clientContextReset (AFB_request *request) {
105 // note: we do not need to parse the old token as clientContextRefresh doit for us
106 if (AFB_SUCCESS != ctxTokenReset (request)) {
107 request->errcode=MHD_HTTP_UNAUTHORIZED;
108 jresp= jsonNewMessage(AFB_FAIL, "No Token Client Context [use --token=xxx]");
110 jresp = json_object_new_object();
111 json_object_object_add(jresp, "uuid", json_object_new_string (request->client->uuid));
117 // In this case or handle is quite basic
122 // This function is call when PostForm processing is completed
123 STATIC void DonePostForm (AFB_request *request) {
124 AFB_PostHandle *postHandle = (AFB_PostHandle*)request->post->data;
125 appPostCtx *appCtx= postHandle->ctx;
127 // Close upload file ID
130 // Free application specific handle
131 free (postHandle->ctx);
133 if (verbose) fprintf (stderr, "DonePostForm upload done\n");
137 // WARNING: PostForm callback are call multiple time (one or each key within form)
138 // When processing POST_JSON request->data hold a PostHandle and not data directly as for POST_JSON
139 STATIC json_object* ProcessPostForm (AFB_request *request, AFB_PostItem *item) {
141 AFB_PostHandle *postHandle;
145 // When Post is fully processed the same callback is call with a item==NULL
147 // Close file, Free handle
149 request->errcode = MHD_HTTP_OK;
150 return(jsonNewMessage(AFB_SUCCESS,"File [%s] uploaded at [%s] error=\n", item->filename, request->config->sessiondir));
153 // Let's make sure this is a valid PostForm request
154 if (!request->post && request->post->type != AFB_POST_FORM) {
155 request->errcode = MHD_HTTP_FORBIDDEN;
156 return(jsonNewMessage(AFB_FAIL,"This is not a valid PostForm request\n"));
158 // In AFB_POST_FORM case post->data is a PostForm handle
159 postHandle = (AFB_PostHandle*) request->post->data;
160 appCtx = (appPostCtx*) postHandle->ctx;
163 // Check this is a file element
164 if (0 != strcmp (item->key, "file")) {
165 request->errcode = MHD_HTTP_FORBIDDEN;
166 return (jsonNewMessage(AFB_FAIL,"No File within element key=%s\n", item->key));
169 // This is the 1st Item iteration let's open output file and allocate necessary resources
170 if (postHandle->ctx == NULL) {
173 strncpy (filepath, request->config->sessiondir, sizeof(filepath));
174 strncat (filepath, "/", sizeof(filepath));
175 strncat (filepath, item->filename, sizeof(filepath));
177 if((fd = open(request->config->sessiondir, O_RDONLY)) < 0) {
178 request->errcode = MHD_HTTP_FORBIDDEN;
179 return (jsonNewMessage(AFB_FAIL,"Fail to Upload file [%s] at [%s] error=\n", item->filename, request->config->sessiondir, strerror(errno)));
182 // Create an application specific context
183 appCtx = malloc (sizeof(appPostCtx)); // May place anything here until post->completeCB handle resources liberation
186 // attach application to postHandle
187 postHandle->ctx = (void*) appCtx; // May place anything here until post->completeCB handle resources liberation
188 postHandle->completeCB = (AFB_apiCB)DonePostForm; // CallBack when Form Processing is finished
191 // this is not the call, FD is already open
192 appCtx = (appPostCtx*) postHandle->ctx;
195 // We have something to write
198 if (!write (appCtx->fd, item->data, item->len)) {
199 request->errcode = MHD_HTTP_FORBIDDEN;
200 return (jsonNewMessage(AFB_FAIL,"Fail to write file [%s] at [%s] error=\n", item->filename, strerror(errno)));
204 // every event should return Sucess or Form processing stop
205 request->errcode = MHD_HTTP_OK;
209 // This function is call when Client Session Context is removed
210 // Note: when freeCtxCB==NULL standard free/malloc is called
211 STATIC void clientContextFree(AFB_clientCtx *client) {
212 fprintf (stderr,"Plugin[%s] Closing Session uuid=[%s]\n", client->plugin->prefix, client->uuid);
216 STATIC AFB_restapi pluginApis[]= {
217 {"ping" , (AFB_apiCB)apiPingTest ,"Ping Rest Test Service"},
218 {"token-create" , (AFB_apiCB)clientContextCreate ,"Request Client Context Creation"},
219 {"token-refresh" , (AFB_apiCB)clientContextRefresh,"Refresh Client Context Token"},
220 {"token-check" , (AFB_apiCB)clientContextCheck ,"Check Client Context Token"},
221 {"token-reset" , (AFB_apiCB)clientContextReset ,"Close Client Context and Free resources"},
222 {"file-upload" , (AFB_apiCB)ProcessPostForm ,"Demo for file upload"},
226 PUBLIC AFB_plugin *afsvRegister () {
227 AFB_plugin *plugin = malloc (sizeof (AFB_plugin));
228 plugin->type = AFB_PLUGIN_JSON;
229 plugin->info = "Application Framework Binder Service";
230 plugin->prefix= "afbs"; // url base
231 plugin->apis = pluginApis;
232 plugin->handle= (void*) "What ever you want";
233 plugin->freeCtxCB= (void*) clientContextFree;