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motion/src/webu_ans.cpp

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/*
* This file is part of MotionPlus.
*
* MotionPlus 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.
*
* MotionPlus 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 MotionPlus. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include "motionplus.hpp"
#include "camera.hpp"
#include "conf.hpp"
#include "logger.hpp"
#include "util.hpp"
#include "webu.hpp"
#include "webu_ans.hpp"
#include "webu_html.hpp"
#include "webu_common.hpp"
#include "webu_stream.hpp"
#include "webu_mpegts.hpp"
#include "webu_json.hpp"
#include "webu_post.hpp"
#include "webu_file.hpp"
#include "video_v4l2.hpp"
/* Extract the camid and cmds from the url */
int cls_webu_ans::parseurl()
{
char *tmpurl;
size_t pos_slash1, pos_slash2, baselen;
/* Example: /camid/cmd1/cmd2/cmd3 */
uri_camid = "";
uri_cmd1 = "";
uri_cmd2 = "";
uri_cmd3 = "";
MOTPLS_LOG(DBG, TYPE_STREAM, NO_ERRNO, _("Sent url: %s"),url.c_str());
tmpurl = (char*)mymalloc(url.length()+1);
memcpy(tmpurl, url.c_str(), url.length());
MHD_http_unescape(tmpurl);
url.assign(tmpurl);
free(tmpurl);
MOTPLS_LOG(DBG, TYPE_STREAM, NO_ERRNO, _("Decoded url: %s"),url.c_str());
baselen = app->cfg->webcontrol_base_path.length();
if (url.length() < baselen) {
return -1;
}
if (url.substr(baselen) == "/favicon.ico") {
return -1;
}
if (url.substr(0, baselen) !=
app->cfg->webcontrol_base_path) {
return -1;
}
if (url == "/") {
return 0;
}
/* Remove any trailing slash to keep parms clean */
if (url.substr(url.length()-1,1) == "/") {
url = url.substr(0, url.length()-1);
}
if (url.length() == baselen) {
return 0;
}
pos_slash1 = url.find("/", baselen+1);
if (pos_slash1 != std::string::npos) {
uri_camid = url.substr(baselen+1, pos_slash1-baselen- 1);
} else {
uri_camid = url.substr(baselen+1);
return 0;
}
pos_slash1++;
if (pos_slash1 >= url.length()) {
return 0;
}
pos_slash2 = url.find("/", pos_slash1);
if (pos_slash2 != std::string::npos) {
uri_cmd1 = url.substr(pos_slash1, pos_slash2 - pos_slash1);
} else {
uri_cmd1 = url.substr(pos_slash1);
return 0;
}
pos_slash1 = ++pos_slash2;
if (pos_slash1 >= url.length()) {
return 0;
}
if (uri_cmd1 == "movies") {
/* Whole remaining url is the movie name and possibly subdir */
uri_cmd2 = url.substr(pos_slash1);
return 0;
} else {
pos_slash2 = url.find("/", pos_slash1);
if (pos_slash2 != std::string::npos) {
uri_cmd2 = url.substr(pos_slash1, pos_slash2 - pos_slash1);
} else {
uri_cmd2 = url.substr(pos_slash1);
return 0;
}
pos_slash1 = ++pos_slash2;
if (pos_slash1 >= url.length()) {
return 0;
}
uri_cmd3 = url.substr(pos_slash1);
}
return 0;
}
/* Edit the parameters specified in the url sent */
void cls_webu_ans::parms_edit()
{
int indx, is_nbr;
if (parseurl() != 0) {
uri_camid = "";
uri_cmd1 = "";
uri_cmd2 = "";
uri_cmd3 = "";
url = "";
}
if (uri_camid.length() > 0) {
is_nbr = true;
for (indx=0; indx < (int)uri_camid.length(); indx++) {
if ((uri_camid[(uint)indx] > '9') || (uri_camid[(uint)indx] < '0')) {
is_nbr = false;
}
}
if (is_nbr) {
device_id = atoi(uri_camid.c_str());
}
}
for (indx=0; indx<app->cam_cnt; indx++) {
if (app->cam_list[indx]->device_id == device_id) {
camindx = indx;
cam = app->cam_list[indx];
}
}
MOTPLS_LOG(DBG, TYPE_STREAM, NO_ERRNO
, "camid: >%s< camindx: >%d< cmd1: >%s< cmd2: >%s< cmd3: >%s<"
, uri_camid.c_str(), camindx
, uri_cmd1.c_str(), uri_cmd2.c_str()
, uri_cmd3.c_str());
}
/* Log the ip of the client connecting*/
void cls_webu_ans::clientip_get()
{
const union MHD_ConnectionInfo *con_info;
char client[WEBUI_LEN_URLI];
const char *ip_dst;
struct sockaddr_in6 *con_socket6;
struct sockaddr_in *con_socket4;
int is_ipv6;
is_ipv6 = false;
if (app->cfg->webcontrol_ipv6) {
is_ipv6 = true;
}
con_info = MHD_get_connection_info(connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS);
if (is_ipv6) {
con_socket6 = (struct sockaddr_in6 *)con_info->client_addr;
ip_dst = inet_ntop(AF_INET6, &con_socket6->sin6_addr, client, WEBUI_LEN_URLI);
if (ip_dst == NULL) {
clientip = "Unknown";
} else {
clientip.assign(client);
if (clientip.substr(0, 7) == "::ffff:") {
clientip = clientip.substr(7);
}
}
} else {
con_socket4 = (struct sockaddr_in *)con_info->client_addr;
ip_dst = inet_ntop(AF_INET, &con_socket4->sin_addr, client, WEBUI_LEN_URLI);
if (ip_dst == NULL) {
clientip = "Unknown";
} else {
clientip.assign(client);
}
}
}
/* Get the hostname */
void cls_webu_ans::hostname_get()
{
const char *hdr;
hdr = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_HOST);
if (hdr == NULL) {
hostfull = "//localhost:" +
std::to_string(app->cfg->webcontrol_port) +
app->cfg->webcontrol_base_path;
} else {
hostfull = "//" + std::string(hdr) +
app->cfg->webcontrol_base_path;
}
MOTPLS_LOG(DBG,TYPE_ALL, NO_ERRNO, _("Full Host: %s"), hostfull.c_str());
return;
}
/* Log the failed authentication check */
void cls_webu_ans::failauth_log(bool userid_fail)
{
timespec tm_cnct;
ctx_webu_clients clients;
std::list<ctx_webu_clients>::iterator it;
MOTPLS_LOG(ALR, TYPE_STREAM, NO_ERRNO
,_("Failed authentication from %s"), clientip.c_str());
clock_gettime(CLOCK_MONOTONIC, &tm_cnct);
it = webu->wb_clients.begin();
while (it != webu->wb_clients.end()) {
if (it->clientip == clientip) {
it->conn_nbr++;
it->conn_time.tv_sec =tm_cnct.tv_sec;
it->authenticated = false;
if (userid_fail) {
it->userid_fail_nbr++;
}
return;
}
it++;
}
clients.clientip = clientip;
clients.conn_nbr = 1;
clients.conn_time = tm_cnct;
clients.authenticated = false;
if (userid_fail) {
clients.userid_fail_nbr = 1;
} else {
clients.userid_fail_nbr = 0;
}
webu->wb_clients.push_back(clients);
return;
}
void cls_webu_ans::client_connect()
{
timespec tm_cnct;
ctx_webu_clients clients;
std::list<ctx_webu_clients>::iterator it;
clock_gettime(CLOCK_MONOTONIC, &tm_cnct);
/* First we need to clean out any old IPs from the list*/
it = webu->wb_clients.begin();
while (it != webu->wb_clients.end()) {
if ((tm_cnct.tv_sec - it->conn_time.tv_sec) >=
(app->cfg->webcontrol_lock_minutes*60)) {
it = webu->wb_clients.erase(it);
}
it++;
}
/* When this function is called, we know that we are authenticated
* so we reset the info and as needed print a message that the
* ip is connected.
*/
it = webu->wb_clients.begin();
while (it != webu->wb_clients.end()) {
if (it->clientip == clientip) {
if (it->authenticated == false) {
MOTPLS_LOG(INF,TYPE_ALL, NO_ERRNO, _("Connection from: %s"),clientip.c_str());
}
it->authenticated = true;
it->conn_nbr = 1;
it->userid_fail_nbr = 0;
it->conn_time.tv_sec = tm_cnct.tv_sec;
return;
}
it++;
}
/* The ip was not already in our list. */
clients.clientip = clientip;
clients.conn_nbr = 1;
clients.userid_fail_nbr = 0;
clients.conn_time = tm_cnct;
clients.authenticated = true;
webu->wb_clients.push_back(clients);
MOTPLS_LOG(INF,TYPE_ALL, NO_ERRNO, _("Connection from: %s"),clientip.c_str());
return;
}
/* Check for ips with excessive failed authentication attempts */
mhdrslt cls_webu_ans::failauth_check()
{
timespec tm_cnct;
std::list<ctx_webu_clients>::iterator it;
std::string tmp;
if (webu->wb_clients.size() == 0) {
return MHD_YES;
}
clock_gettime(CLOCK_MONOTONIC, &tm_cnct);
it = webu->wb_clients.begin();
while (it != webu->wb_clients.end()) {
if ((it->clientip == clientip) &&
((tm_cnct.tv_sec - it->conn_time.tv_sec) <
(app->cfg->webcontrol_lock_minutes*60)) &&
(it->authenticated == false) &&
(it->conn_nbr > app->cfg->webcontrol_lock_attempts)) {
MOTPLS_LOG(EMG, TYPE_STREAM, NO_ERRNO
, "Ignoring connection from: %s"
, clientip.c_str());
it->conn_time = tm_cnct;
if (app->cfg->webcontrol_lock_script != "") {
tmp = app->cfg->webcontrol_lock_script + " " +
std::to_string(it->userid_fail_nbr) + " " + clientip;
util_exec_command(cam, tmp.c_str(), NULL);
}
return MHD_NO;
} else if ((tm_cnct.tv_sec - it->conn_time.tv_sec) >=
(app->cfg->webcontrol_lock_minutes*60)) {
it = webu->wb_clients.erase(it);
} else {
it++;
}
}
return MHD_YES;
}
/* Create a authorization denied response to user*/
mhdrslt cls_webu_ans::mhd_digest_fail(int signal_stale)
{
struct MHD_Response *response;
mhdrslt retcd;
authenticated = false;
resp_page = "<html><head><title>Access denied</title>"
"</head><body>Access denied</body></html>";
response = MHD_create_response_from_buffer(resp_page.length()
,(void *)resp_page.c_str(), MHD_RESPMEM_PERSISTENT);
if (response == NULL) {
return MHD_NO;
}
retcd = MHD_queue_auth_fail_response(connection, auth_realm
,auth_opaque, response
,(signal_stale == MHD_INVALID_NONCE) ? MHD_YES : MHD_NO);
MHD_destroy_response(response);
return retcd;
}
/* Perform digest authentication */
mhdrslt cls_webu_ans::mhd_digest()
{
/* This function gets called a couple of
* times by MHD during the authentication process.
*/
int retcd;
char *user;
/*Get username or prompt for a user/pass */
user = MHD_digest_auth_get_username(connection);
if (user == NULL) {
return mhd_digest_fail(MHD_NO);
}
/* Check for valid user name */
if (mystrne(user, auth_user)) {
failauth_log(true);
myfree(user);
return mhd_digest_fail(MHD_NO);
}
myfree(user);
/* Check the password as well*/
retcd = MHD_digest_auth_check(connection, auth_realm
, auth_user, auth_pass, 300);
if (retcd == MHD_NO) {
failauth_log(false);
}
if ( (retcd == MHD_INVALID_NONCE) || (retcd == MHD_NO) ) {
return mhd_digest_fail(retcd);
}
authenticated = true;
return MHD_YES;
}
/* Create a authorization denied response to user*/
mhdrslt cls_webu_ans::mhd_basic_fail()
{
struct MHD_Response *response;
int retcd;
authenticated = false;
resp_page = "<html><head><title>Access denied</title>"
"</head><body>Access denied</body></html>";
response = MHD_create_response_from_buffer(resp_page.length()
,(void *)resp_page.c_str(), MHD_RESPMEM_PERSISTENT);
if (response == NULL) {
return MHD_NO;
}
retcd = MHD_queue_basic_auth_fail_response (connection, auth_realm, response);
MHD_destroy_response(response);
if (retcd == MHD_YES) {
return MHD_YES;
} else {
return MHD_NO;
}
}
/* Perform Basic Authentication. */
mhdrslt cls_webu_ans::mhd_basic()
{
char *user, *pass;
pass = NULL;
user = NULL;
user = MHD_basic_auth_get_username_password (connection, &pass);
if ((user == NULL) || (pass == NULL)) {
myfree(user);
myfree(pass);
return mhd_basic_fail();
}
if ((mystrne(user, auth_user)) || (mystrne(pass, auth_pass))) {
failauth_log(mystrne(user, auth_user));
myfree(user);
myfree(pass);
return mhd_basic_fail();
}
myfree(user);
myfree(pass);
authenticated = true;
return MHD_YES;
}
/* Parse apart the user:pass provided*/
void cls_webu_ans::mhd_auth_parse()
{
int auth_len;
char *col_pos;
myfree(auth_user);
myfree(auth_pass);
auth_len = (int)app->cfg->webcontrol_authentication.length();
col_pos =(char*) strstr(app->cfg->webcontrol_authentication.c_str() ,":");
if (col_pos == NULL) {
auth_user = (char*)mymalloc((uint)(auth_len+1));
auth_pass = (char*)mymalloc(2);
snprintf(auth_user, (uint)auth_len + 1, "%s"
,app->cfg->webcontrol_authentication.c_str());
snprintf(auth_pass, 2, "%s","");
} else {
auth_user = (char*)mymalloc((uint)auth_len - strlen(col_pos) + 1);
auth_pass =(char*)mymalloc(strlen(col_pos));
snprintf(auth_user, (uint)auth_len - strlen(col_pos) + 1, "%s"
,app->cfg->webcontrol_authentication.c_str());
snprintf(auth_pass, strlen(col_pos), "%s", col_pos + 1);
}
}
/* Initialize for authorization */
mhdrslt cls_webu_ans::mhd_auth()
{
unsigned int rand1,rand2;
srand((unsigned int)time(NULL));
rand1 = (unsigned int)(42000000.0 * rand() / (RAND_MAX + 1.0));
rand2 = (unsigned int)(42000000.0 * rand() / (RAND_MAX + 1.0));
snprintf(auth_opaque, WEBUI_LEN_PARM, "%08x%08x", rand1, rand2);
snprintf(auth_realm, WEBUI_LEN_PARM, "%s","Motion");
if (app->cfg->webcontrol_authentication == "") {
authenticated = true;
if (app->cfg->webcontrol_auth_method != "none") {
MOTPLS_LOG(NTC, TYPE_STREAM, NO_ERRNO ,_("No webcontrol user:pass provided"));
}
return MHD_YES;
}
if (auth_user == NULL) {
mhd_auth_parse();
}
if (app->cfg->webcontrol_auth_method == "basic") {
return mhd_basic();
} else if (app->cfg->webcontrol_auth_method == "digest") {
return mhd_digest();
}
authenticated = true;
return MHD_YES;
}
/* Send the response that we created back to the user. */
void cls_webu_ans::mhd_send()
{
mhdrslt retcd;
struct MHD_Response *response;
p_lst *lst = &webu->wb_headers->params_array;
p_it it;
response = MHD_create_response_from_buffer(resp_page.length()
,(void *)resp_page.c_str(), MHD_RESPMEM_PERSISTENT);
if (!response) {
MOTPLS_LOG(ERR, TYPE_STREAM, NO_ERRNO, _("Invalid response"));
return;
}
if (webu->wb_headers->params_count > 0) {
for (it = lst->begin(); it != lst->end(); it++) {
MHD_add_response_header (response
, it->param_name.c_str(),it->param_value.c_str());
}
}
if (resp_type == WEBUI_RESP_TEXT) {
MHD_add_response_header (response, MHD_HTTP_HEADER_CONTENT_TYPE, "text/plain;");
} else if (resp_type == WEBUI_RESP_JSON) {
MHD_add_response_header (response, MHD_HTTP_HEADER_CONTENT_TYPE, "application/json;");
} else {
MHD_add_response_header (response, MHD_HTTP_HEADER_CONTENT_TYPE, "text/html");
}
retcd = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
if (retcd == MHD_NO) {
MOTPLS_LOG(NTC, TYPE_STREAM, NO_ERRNO ,_("send page failed."));
}
}
void cls_webu_ans::bad_request()
{
resp_page =
"<!DOCTYPE html>\n"
"<html>\n"
"<body>\n"
"<p>Bad Request</p>\n"
"<p>The server did not understand your request.</p>\n"
"</body>\n"
"</html>\n";
mhd_send();
}
/* Answer the get request from the user */
void cls_webu_ans::answer_get()
{
MOTPLS_LOG(DBG, TYPE_STREAM, NO_ERRNO ,"processing get");
if ((uri_cmd1 == "mjpg") || (uri_cmd1 == "mpegts") ||
(uri_cmd1 == "static")) {
if (webu_stream == nullptr) {
webu_stream = new cls_webu_stream(this);
}
webu_stream->main();
} else if (uri_cmd1 == "movies") {
if (webu_file == nullptr) {
webu_file = new cls_webu_file(this);
}
webu_file->main();
} else if ((uri_cmd1 == "config.json") ||
(uri_cmd1 == "movies.json") || (uri_cmd1 == "status.json")) {
if (webu_json == nullptr) {
webu_json = new cls_webu_json(this);
}
webu_json->main();
} else {
if (webu_html == nullptr) {
webu_html = new cls_webu_html(this);
}
webu_html->main();
}
}
/* Answer the connection request for the webcontrol*/
mhdrslt cls_webu_ans::answer_main(struct MHD_Connection *p_connection
, const char *method, const char *upload_data, size_t *upload_data_size)
{
mhdrslt retcd;
cnct_type = WEBUI_CNCT_CONTROL;
connection = p_connection;
if (url.length() == 0) {
bad_request();
return MHD_YES;
}
if (cam != NULL) {
if (cam->handler_stop) {
MOTPLS_LOG(NTC, TYPE_STREAM, NO_ERRNO ,_("Shutting down camera"));
return MHD_NO;
}
}
if (clientip.length() == 0) {
clientip_get();
}
if (failauth_check() == MHD_NO) {
return MHD_NO;
}
if (authenticated == false) {
retcd = mhd_auth();
if (authenticated == false) {
return retcd;
}
}
client_connect();
if (mhd_first) {
mhd_first = false;
if (mystreq(method,"POST")) {
if (webu_post == nullptr) {
webu_post = new cls_webu_post(this);
}
cnct_method = WEBUI_METHOD_POST;
retcd = webu_post->processor_init();
} else {
cnct_method = WEBUI_METHOD_GET;
retcd = MHD_YES;
}
return retcd;
}
hostname_get();
if (mystreq(method,"POST")) {
retcd = webu_post->processor_start(upload_data, upload_data_size);
} else {
answer_get();
retcd = MHD_YES;
}
return retcd;
}
cls_webu_ans::cls_webu_ans(ctx_motapp *p_motapp, const char *uri)
{
app = p_motapp;
webu = p_motapp->webu;
char *tmplang;
url = "";
uri_camid = "";
uri_cmd1 = "";
uri_cmd2 = "";
uri_cmd3 = "";
clientip = "";
lang = ""; /* Two digit lang code */
auth_opaque = (char*)mymalloc(WEBUI_LEN_PARM);
auth_realm = (char*)mymalloc(WEBUI_LEN_PARM);
auth_user = nullptr; /* Buffer to hold the user name*/
auth_pass = nullptr; /* Buffer to hold the password */
authenticated = false; /* boolean for whether we are authenticated*/
resp_page = ""; /* The response being constructed */
req_file = nullptr;
cnct_type = WEBUI_CNCT_UNKNOWN;
resp_type = WEBUI_RESP_HTML; /* Default to html response */
cnct_method = WEBUI_METHOD_GET;
camindx = -1;
device_id = -1;
tmplang = setlocale(LC_ALL, NULL);
if (tmplang == nullptr) {
lang = "en";
} else {
lang.assign(tmplang, 2);
}
mhd_first = true;
cam = nullptr;
webu_file = nullptr;
webu_html = nullptr;
webu_json = nullptr;
webu_post = nullptr;
webu_stream = nullptr;
url.assign(uri);
parms_edit();
webu->cnct_cnt++;
}
void cls_webu_ans::deinit_counter()
{
ctx_stream_data *strm;
cls_camera *p_cam;
int indx, cam_max, cam_min;
if (cnct_type < WEBUI_CNCT_JPG_MIN) {
return;
}
if (device_id == 0) {
cam_min = 0;
cam_max = app->cam_cnt;
} else if ((device_id > 0) && (camindx >= 0)) {
cam_min = camindx;
cam_max = cam_min +1;
} else {
cam_min = 1;
cam_max = 0;
}
for (indx=cam_min; indx<cam_max; indx++) {
p_cam = app->cam_list[indx];
pthread_mutex_lock(&p_cam->stream.mutex);
if ((cnct_type == WEBUI_CNCT_JPG_FULL) ||
(cnct_type == WEBUI_CNCT_TS_FULL)) {
strm = &p_cam->stream.norm;
} else if ( (cnct_type == WEBUI_CNCT_JPG_SUB) ||
(cnct_type == WEBUI_CNCT_TS_SUB)) {
strm = &p_cam->stream.sub;
} else if ( (cnct_type == WEBUI_CNCT_JPG_MOTION) ||
(cnct_type == WEBUI_CNCT_TS_MOTION )) {
strm = &p_cam->stream.motion;
} else if ( (cnct_type == WEBUI_CNCT_JPG_SOURCE) ||
(cnct_type == WEBUI_CNCT_TS_SOURCE)) {
strm = &p_cam->stream.source;
} else if ( (cnct_type == WEBUI_CNCT_JPG_SECONDARY) ||
(cnct_type == WEBUI_CNCT_TS_SECONDARY)) {
strm = &p_cam->stream.secondary;
} else {
strm = &p_cam->stream.norm;
}
if ((cnct_type > WEBUI_CNCT_JPG_MIN) &&
(cnct_type < WEBUI_CNCT_JPG_MAX)) {
if ((device_id == 0) && (strm->all_cnct > 0)) {
strm->all_cnct--;
} else if ((device_id > 0) && (strm->jpg_cnct > 0)) {
strm->jpg_cnct--;
}
} else if ((cnct_type > WEBUI_CNCT_TS_MIN) &&
(cnct_type < WEBUI_CNCT_TS_MAX)) {
if ((device_id == 0) && (strm->all_cnct > 0)) {
strm->all_cnct--;
} else if ((device_id > 0) && (strm->ts_cnct > 0)) {
strm->ts_cnct--;
}
}
if ((strm->all_cnct == 0) &&
(strm->jpg_cnct == 0) &&
(strm->ts_cnct == 0) &&
(p_cam->passflag)) {
myfree(strm->img_data);
myfree(strm->jpg_data);
}
pthread_mutex_unlock(&p_cam->stream.mutex);
}
}
cls_webu_ans::~cls_webu_ans()
{
deinit_counter();
if (webu_file != nullptr) {
delete webu_file;
}
if (webu_html != nullptr) {
delete webu_html;
}
if (webu_json != nullptr) {
delete webu_json;
}
if (webu_post != nullptr) {
delete webu_post;
}
if (webu_stream != nullptr) {
delete webu_stream;
}
myfree(auth_user);
myfree(auth_pass);
myfree(auth_opaque);
myfree(auth_realm);
webu->cnct_cnt--;
}
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