130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
//
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// ZoneMinder Remote Camera Class Implementation, $Date$, $Revision$
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// Copyright (C) 2001-2008 Philip Coombes
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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#include "zm_remote_camera.h"
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#include "zm_utils.h"
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <sys/socket.h>
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RemoteCamera::RemoteCamera(
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const Monitor *monitor,
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const std::string &p_protocol,
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const std::string &p_host,
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const std::string &p_port,
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const std::string &p_path,
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int p_width,
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int p_height,
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int p_colours,
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int p_brightness,
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int p_contrast,
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int p_hue,
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int p_colour,
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bool p_capture,
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bool p_record_audio
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) :
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Camera( monitor, REMOTE_SRC, p_width, p_height, p_colours, ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours), p_brightness, p_contrast, p_hue, p_colour, p_capture, p_record_audio ),
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protocol( p_protocol ),
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host( p_host ),
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port( p_port ),
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path( p_path ),
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hp( 0 ),
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mNeedAuth(false),
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mAuthenticator(nullptr)
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{
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if ( path[0] != '/' )
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path = '/'+path;
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}
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RemoteCamera::~RemoteCamera() {
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if ( hp != nullptr ) {
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freeaddrinfo(hp);
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hp = nullptr;
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}
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if ( mAuthenticator ) {
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delete mAuthenticator;
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mAuthenticator = nullptr;
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}
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}
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void RemoteCamera::Initialise() {
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if( protocol.empty() )
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Fatal( "No protocol specified for remote camera" );
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if( host.empty() )
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Fatal( "No host specified for remote camera" );
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if ( port.empty() )
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Fatal("No port specified for remote camera");
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//if( path.empty() )
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//Fatal( "No path specified for remote camera" );
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// Cache as much as we can to speed things up
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std::string::size_type authIndex = host.rfind( '@' );
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if ( authIndex != std::string::npos ) {
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auth = host.substr( 0, authIndex );
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host.erase( 0, authIndex+1 );
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auth64 = Base64Encode(auth);
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authIndex = auth.rfind( ':' );
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username = auth.substr(0,authIndex);
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password = auth.substr( authIndex+1, auth.length() );
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}
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mNeedAuth = false;
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mAuthenticator = new zm::Authenticator(username,password);
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struct addrinfo hints;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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int ret = getaddrinfo(host.c_str(), port.c_str(), &hints, &hp);
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if ( ret != 0 ) {
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Fatal( "Can't getaddrinfo(%s port %s): %s", host.c_str(), port.c_str(), gai_strerror(ret) );
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}
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struct addrinfo *p = nullptr;
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int addr_count = 0;
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for ( p = hp; p != nullptr; p = p->ai_next ) {
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addr_count++;
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}
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Debug(1, "%d addresses returned", addr_count);
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}
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int RemoteCamera::Read( int fd, char *buf, int size ) {
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int ReceivedBytes = 0;
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while ( ReceivedBytes < size ) {
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// recv blocks until we get data, but it may be of ARBITRARY LENGTH and INCOMPLETE
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int bytes_to_recv = size - ReceivedBytes;
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if ( SOCKET_BUF_SIZE < bytes_to_recv )
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bytes_to_recv = SOCKET_BUF_SIZE;
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//Debug(3, "Aiming to receive %d of %d bytes", bytes_to_recv, size );
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int bytes = recv(fd, &buf[ReceivedBytes], bytes_to_recv, 0); //socket, buffer, len, flags
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if ( bytes <= 0 ) {
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Error("RemoteCamera::Read Recv error. Closing Socket\n");
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return -1;
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}
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ReceivedBytes += bytes;
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}
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return ReceivedBytes;
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}
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