1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
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"},
{"create" , AFB_SESSION_CREATE, (AFB_apiCB)clientContextCreate ,"Request Client Context Creation"},
{"refresh" , AFB_SESSION_RENEW , (AFB_apiCB)clientContextRefresh,"Refresh Client Context Token"},
{"check" , AFB_SESSION_CHECK , (AFB_apiCB)clientContextCheck ,"Check Client Context 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= "token"; // url base
plugin->apis = pluginApis;
plugin->handle= (void*) "What ever you want";
plugin->freeCtxCB= (void*) clientContextFree;
return (plugin);
};
|
