static int auth_handler(struct mg_connection *conn) {
int result = 0; // Not authorized
FILE *fp;
// To populate passwords file, do
// mongoose -A my_passwords.txt mydomain.com admin admin
if ((fp = fopen("my_passwords.txt", "r")) != NULL) {
result = mg_authorize_digest(conn, fp);
fclose(fp);
}
return result;
}
static int server_callback(struct mg_connection *c, enum mg_event ev) {
int result = MG_FALSE;
FILE *fp = NULL;
switch(ev) {
case MG_CLOSE:
mpd_close_handler(c);
return MG_TRUE;
case MG_REQUEST:
if (c->is_websocket) {
c->content[c->content_len] = '\0';
if(c->content_len)
return callback_mpd(c);
else
return MG_TRUE;
} else
#ifdef WITH_DYNAMIC_ASSETS
return MG_FALSE;
#else
return callback_http(c);
#endif
case MG_AUTH:
// no auth for websockets since mobile safari does not support it
if ( (gpass == NULL) || (c->is_websocket) )
return MG_TRUE;
else {
if ( (fp = fopen(gpass, "r")) != NULL ) {
result = mg_authorize_digest(c, fp);
fclose(fp);
}
}
return result;
default:
return MG_FALSE;
}
}
/**
* Callback function which handles all HTTP requests.
*/
static int handle_http(struct mg_connection *conn) {
char *url = (char *) &conn->uri[1]; // exclude the starting '/'
Item *item;
ACSIServer *acsiServer = (ACSIServer *) conn->server_param;
#ifdef USE_SSL
#if USE_HTTP_AUTH == 1
static const char *passwords_file = "htpasswd.txt";
FILE *fp = fopen(passwords_file, "r");
if (fp == NULL || !mg_authorize_digest(conn, fp)) {
mg_send_digest_auth_request(conn);
return 1;
}
if (fp != NULL) {
fclose(fp);
}
#endif
#endif
// check for method names in url
if (strcmp(conn->request_method, "GET") == 0) {
int len = 0;
char printBuf[ACSI_RESPONSE_MAX_SIZE];
if (strncmp(url, ACSI_GET_DEFINITION, strlen(ACSI_GET_DEFINITION)) == 0) {
item = getItemFromPath(acsiServer->iedName, (char *) &url[strlen(ACSI_GET_DEFINITION) + 1]);
len = itemDescriptionTreeToJSON(printBuf, item, FALSE);
}
else if (strncmp(url, ACSI_GET_DIRECTORY, strlen(ACSI_GET_DIRECTORY)) == 0) {
item = getItemFromPath(acsiServer->iedName, (char *) &url[strlen(ACSI_GET_DIRECTORY) + 1]);
len = itemDescriptionTreeToJSON(printBuf, item, TRUE);
}
// else if (strncmp(url, "scd", strlen("scd")) == 0) {
// mg_send_header(conn, "Content-Type", "application/xml");
// mg_send_data(conn, scd_file, strlen(scd_file));
// }
else if (strncmp(url, ACSI_ASSOCIATE, strlen(ACSI_ASSOCIATE)) == 0) {
acsiServer->clients = addClient(acsiServer->clients, conn->remote_ip, conn->remote_port);
mg_send_data(conn, ACSI_OK, strlen(ACSI_OK));
return 1;
}
else if (strncmp(url, ACSI_RELEASE, strlen(ACSI_RELEASE)) == 0) {
// TODO raise flag here, rather than remove?
acsiServer->clients = removeClientByConnection(acsiServer->clients, conn->remote_ip, conn->remote_port);
mg_send_data(conn, ACSI_OK, strlen(ACSI_OK));
return 1;
}
else if (strncmp(url, ACSI_ABORT, strlen(ACSI_ABORT)) == 0) {
acsiServer->clients = removeClientByConnection(acsiServer->clients, conn->remote_ip, conn->remote_port);
mg_send_data(conn, ACSI_OK, strlen(ACSI_OK));
return 1;
}
else {
item = getItemFromPath(acsiServer->iedName, (char *) url);
len = itemTreeToJSON(printBuf, item);
}
if (item != NULL && len == -1) {
mg_send_status(conn, 500);
mg_send_data(conn, ACSI_BUFFER_OVERRUN, strlen(ACSI_BUFFER_OVERRUN));
return 1;
}
else if (item != NULL && len > 0) {
#if ACSI_AUTO_ASSOCIATE == 1
acsiServer->clients = addClient(acsiServer->clients, conn->remote_ip, conn->remote_port);
#endif
mg_send_header(conn, "Content-Type", "application/json");
mg_send_header(conn, "Cache-Control", "no-cache");
mg_send_header(conn, "Access-Control-Allow-Origin", "*");
mg_send_data(conn, printBuf, len);
// printf("len: %d\n", len);
// fflush(stdout);
return 1;
}
}
else if (strcmp(conn->request_method, "POST") == 0) {
item = getItemFromPath(acsiServer->iedName, (char *) url);
int setReturn = setItem(item, conn->content, conn->content_len);
// printf("content: %.*s\n", conn->content_len, conn->content);
// fflush(stdout);
if (setReturn > 0) {
mg_send_header(conn, "Cache-Control", "no-cache");
mg_send_header(conn, "Access-Control-Allow-Origin", "*");
mg_send_data(conn, ACSI_OK, strlen(ACSI_OK));
}
else {
mg_send_data(conn, ACSI_NOT_POSSIBLE, strlen(ACSI_NOT_POSSIBLE));
}
return 1;
}
// by default, return 404
mg_send_status(conn, 404);
mg_send_data(conn, ACSI_NOT_FOUND, strlen(ACSI_NOT_FOUND));
return 1;
}
