return (jresp);
}
-// Some file upload sample
-STATIC json_object* clientFileUpload (AFB_request *request) {
- int fd;
- json_object *jresp;
- char filepath[512];
- char *filename;
+// 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;
- getQueryValue(request, "filename");
- if (filename == NULL) return (jsonNewMessage(AFB_FAIL, "No Filename provided"));
+ // Close upload file ID
+ close (appCtx->fd);
+
+ // Free application specific handle
+ free (postHandle->ctx);
- // add an error code to respond
- if (request->post == NULL) {
- request->errcode=MHD_HTTP_UNAUTHORIZED;
- return (jsonNewMessage(AFB_FAIL, "Post No Data"));
+ 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));
}
- // This is simple test let's write file in config->session->filename
- strncpy (filepath, request->config->configfile, sizeof(filepath));
- strncat (filepath, "/", sizeof(filepath));
- strncat (filepath, "/", sizeof(filepath));
-
+ // 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;
+ }
- if((fd = open(request->config->configfile, O_RDONLY)) < 0) {
- return (jsonNewMessage(AFB_FAIL,"Fail to Upload file [%s] at [%s] error=\n", filename, filepath, strerror(errno)));
- };
+ // 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));
+ }
- // write file on disk and free fd
- write (fd, request->post, request->len);
- close(fd);
+ // This is the 1st Item iteration let's open output file and allocate necessary resources
+ if (postHandle->ctx == NULL) {
+ int fd;
- return (jresp);
+ 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
{"token-refresh" , (AFB_apiCB)clientContextRefresh,"Refresh Client Context Token"},
{"token-check" , (AFB_apiCB)clientContextCheck ,"Check Client Context Token"},
{"token-reset" , (AFB_apiCB)clientContextReset ,"Close Client Context and Free resources"},
- {"file-upload" , (AFB_apiCB)clientFileUpload ,"Demo for file upload"},
+ {"file-upload" , (AFB_apiCB)ProcessPostForm ,"Demo for file upload"},
{NULL}
};