1128 lines
41 KiB
C++
1128 lines
41 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_http.h"
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#include "zm_packet.h"
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#include "zm_signal.h"
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#include "zm_regexp.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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#ifdef SOLARIS
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#include <sys/filio.h> // FIONREAD and friends
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#endif
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#ifdef __FreeBSD__
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#include <netinet/in.h>
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#endif
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#if HAVE_LIBPCRE
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static RegExpr *header_expr = nullptr;
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static RegExpr *status_expr = nullptr;
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static RegExpr *connection_expr = nullptr;
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static RegExpr *content_length_expr = nullptr;
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static RegExpr *content_type_expr = nullptr;
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#endif
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RemoteCameraHttp::RemoteCameraHttp(
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const Monitor *monitor,
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const std::string &p_method,
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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, 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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RemoteCamera(
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monitor,
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"http",
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p_host,
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p_port,
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p_path,
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p_width,
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p_height,
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p_colours,
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p_brightness,
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p_contrast,
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p_hue,
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p_colour,
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p_capture,
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p_record_audio )
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{
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sd = -1;
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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if ( p_method == "simple" )
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method = SIMPLE;
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else if ( p_method == "regexp" ) {
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method = REGEXP;
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} else
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Fatal("Unrecognised method '%s' when creating HTTP camera %d", p_method.c_str(), monitor->Id());
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if ( capture ) {
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Initialise();
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}
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mVideoStream = nullptr;
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}
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RemoteCameraHttp::~RemoteCameraHttp() {
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if ( capture ) {
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Terminate();
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}
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}
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void RemoteCameraHttp::Initialise() {
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RemoteCamera::Initialise();
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if ( request.empty() ) {
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request = stringtf( "GET %s HTTP/%s\r\n", path.c_str(), config.http_version );
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request += stringtf( "User-Agent: %s/%s\r\n", config.http_ua, ZM_VERSION );
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request += stringtf( "Host: %s\r\n", host.c_str());
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if ( strcmp( config.http_version, "1.0" ) == 0 )
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request += stringtf( "Connection: Keep-Alive\r\n" );
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if ( !auth.empty() )
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request += stringtf( "Authorization: Basic %s\r\n", auth64.c_str() );
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request += "\r\n";
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Debug( 2, "Request: %s", request.c_str() );
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}
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if ( !timeout.tv_sec ) {
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timeout.tv_sec = config.http_timeout/1000;
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timeout.tv_usec = (config.http_timeout%1000)*1000;
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}
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int max_size = width*height*colours;
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buffer.size( max_size );
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mode = SINGLE_IMAGE;
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format = UNDEF;
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state = HEADER;
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#if HAVE_LIBPCRE
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if ( method == REGEXP ) {
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if ( !header_expr )
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header_expr = new RegExpr("^(.+?\r?\n\r?\n)", PCRE_DOTALL);
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if ( !status_expr )
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status_expr = new RegExpr("^HTTP/(1\\.[01]) +([0-9]+) +(.+?)\r?\n", PCRE_CASELESS);
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if ( !connection_expr )
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connection_expr = new RegExpr("Connection: ?(.+?)\r?\n", PCRE_CASELESS);
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if ( !content_length_expr )
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content_length_expr = new RegExpr("Content-length: ?([0-9]+)\r?\n", PCRE_CASELESS);
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if ( !content_type_expr )
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content_type_expr = new RegExpr("Content-type: ?(.+?)(?:; ?boundary=\x22?(.+?)\x22?)?\r?\n", PCRE_CASELESS);
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}
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#endif
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} // end void RemoteCameraHttp::Initialise()
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int RemoteCameraHttp::Connect() {
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struct addrinfo *p = nullptr;
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for ( p = hp; p != nullptr; p = p->ai_next ) {
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sd = socket( p->ai_family, p->ai_socktype, p->ai_protocol );
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if ( sd < 0 ) {
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Warning("Can't create socket: %s", strerror(errno) );
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continue;
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}
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if ( connect( sd, p->ai_addr, p->ai_addrlen ) < 0 ) {
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close(sd);
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sd = -1;
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char buf[sizeof(struct in6_addr)];
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struct sockaddr_in *addr;
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addr = (struct sockaddr_in *)p->ai_addr;
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inet_ntop( AF_INET, &(addr->sin_addr), buf, INET6_ADDRSTRLEN );
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Warning("Can't connect to remote camera mid: %d at %s: %s", monitor->Id(), buf, strerror(errno));
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continue;
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}
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/* If we got here, we must have connected successfully */
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break;
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}
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if ( p == nullptr ) {
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Error("Unable to connect to the remote camera, aborting");
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return -1;
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}
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Debug(3, "Connected to host, socket = %d", sd);
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return sd;
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} // end int RemoteCameraHttp::Connect()
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int RemoteCameraHttp::Disconnect() {
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close(sd);
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sd = -1;
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Debug(3, "Disconnected from host");
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return 0;
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}
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int RemoteCameraHttp::SendRequest() {
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Debug(2, "Sending request: %s", request.c_str());
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if ( write(sd, request.data(), request.length()) < 0 ) {
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Error("Can't write: %s", strerror(errno));
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Disconnect();
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return -1;
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}
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format = UNDEF;
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state = HEADER;
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Debug(3, "Request sent");
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return 0;
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}
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/* Return codes are as follows:
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* -1 means there was an error
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* 0 means no bytes were returned but there wasn't actually an error.
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* > 0 is the # of bytes read.
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*/
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int RemoteCameraHttp::ReadData( Buffer &buffer, unsigned int bytes_expected ) {
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fd_set rfds;
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FD_ZERO(&rfds);
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FD_SET(sd, &rfds);
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struct timeval temp_timeout = timeout;
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int n_found = select(sd+1, &rfds, nullptr, nullptr, &temp_timeout);
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if( n_found == 0 ) {
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Debug( 1, "Select timed out timeout was %d secs %d usecs", temp_timeout.tv_sec, temp_timeout.tv_usec );
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int error = 0;
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socklen_t len = sizeof (error);
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int retval = getsockopt (sd, SOL_SOCKET, SO_ERROR, &error, &len);
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if(retval != 0 ) {
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Debug( 1, "error getting socket error code %s", strerror(retval) );
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}
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if (error != 0 ) {
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return -1;
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}
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// Why are we disconnecting? It's just a timeout, meaning that data wasn't available.
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//Disconnect();
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return 0;
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} else if ( n_found < 0) {
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Error("Select error: %s", strerror(errno));
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return -1;
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}
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unsigned int total_bytes_to_read = 0;
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if ( bytes_expected ) {
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total_bytes_to_read = bytes_expected;
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} else {
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if ( ioctl( sd, FIONREAD, &total_bytes_to_read ) < 0 ) {
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Error( "Can't ioctl(): %s", strerror(errno) );
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return -1;
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}
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if ( total_bytes_to_read == 0 ) {
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if ( mode == SINGLE_IMAGE ) {
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int error = 0;
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socklen_t len = sizeof (error);
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int retval = getsockopt( sd, SOL_SOCKET, SO_ERROR, &error, &len );
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if ( retval != 0 ) {
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Debug( 1, "error getting socket error code %s", strerror(retval) );
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}
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if ( error != 0 ) {
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return -1;
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}
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// Case where we are grabbing a single jpg, but no content-length was given, so the expectation is that we read until close.
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return 0;
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}
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// If socket is closed locally, then select will fail, but if it is closed remotely
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// then we have an exception on our socket.. but no data.
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Debug(3, "Socket closed remotely");
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//Disconnect(); // Disconnect is done outside of ReadData now.
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return -1;
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}
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// There can be lots of bytes available. I've seen 4MB or more. This will vastly inflate our buffer size unnecessarily.
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if ( total_bytes_to_read > ZM_NETWORK_BUFSIZ ) {
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total_bytes_to_read = ZM_NETWORK_BUFSIZ;
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Debug(4, "Just getting 32K" );
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} else {
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Debug(4, "Just getting %d", total_bytes_to_read );
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}
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} // end if bytes_expected or not
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Debug( 4, "Expecting %d bytes", total_bytes_to_read );
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int total_bytes_read = 0;
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do {
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int bytes_read = buffer.read_into( sd, total_bytes_to_read );
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if ( bytes_read < 0 ) {
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Error( "Read error: %s", strerror(errno) );
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return( -1 );
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} else if ( bytes_read == 0 ) {
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Debug( 2, "Socket closed" );
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//Disconnect(); // Disconnect is done outside of ReadData now.
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return( -1 );
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} else if ( (unsigned int)bytes_read < total_bytes_to_read ) {
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Error( "Incomplete read, expected %d, got %d", total_bytes_to_read, bytes_read );
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return( -1 );
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}
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Debug( 3, "Read %d bytes", bytes_read );
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total_bytes_read += bytes_read;
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total_bytes_to_read -= bytes_read;
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} while ( total_bytes_to_read );
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Debug(4, buffer);
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return total_bytes_read;
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}
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int RemoteCameraHttp::GetData() {
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time_t start_time = time(nullptr);
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int buffer_len = 0;
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while ( !( buffer_len = ReadData(buffer) ) ) {
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if ( zm_terminate || ( start_time - time(nullptr) < ZM_WATCH_MAX_DELAY ))
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return -1;
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Debug(4, "Timeout waiting for REGEXP HEADER");
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usleep(100000);
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}
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return buffer_len;
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}
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int RemoteCameraHttp::GetResponse() {
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int buffer_len;
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#if HAVE_LIBPCRE
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if ( method == REGEXP ) {
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const char *header = nullptr;
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int header_len = 0;
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const char *http_version = nullptr;
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int status_code = 0;
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const char *status_mesg = nullptr;
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const char *connection_type = "";
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int content_length = 0;
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const char *content_type = "";
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const char *content_boundary = "";
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const char *subheader = nullptr;
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int subheader_len = 0;
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//int subcontent_length = 0;
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//const char *subcontent_type = "";
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while ( !zm_terminate ) {
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switch( state ) {
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case HEADER :
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{
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buffer_len = GetData();
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if ( buffer_len < 0 ) {
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Error("Unable to read header data");
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return -1;
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}
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bytes += buffer_len;
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if ( header_expr->Match( (char*)buffer, buffer.size() ) == 2 ) {
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header = header_expr->MatchString( 1 );
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header_len = header_expr->MatchLength( 1 );
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Debug(4, "Captured header (%d bytes):\n'%s'", header_len, header);
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if ( status_expr->Match( header, header_len ) < 4 ) {
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Error( "Unable to extract HTTP status from header" );
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return( -1 );
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}
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http_version = status_expr->MatchString( 1 );
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status_code = atoi( status_expr->MatchString( 2 ) );
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status_mesg = status_expr->MatchString( 3 );
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if ( status_code == 401 ) {
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if ( mNeedAuth ) {
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Error( "Failed authentication: " );
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return( -1 );
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}
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mNeedAuth = true;
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std::string Header = header;
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mAuthenticator->checkAuthResponse(Header);
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if ( mAuthenticator->auth_method() == zm::AUTH_DIGEST ) {
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Debug( 2, "Need Digest Authentication" );
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request = stringtf( "GET %s HTTP/%s\r\n", path.c_str(), config.http_version );
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request += stringtf( "User-Agent: %s/%s\r\n", config.http_ua, ZM_VERSION );
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request += stringtf( "Host: %s\r\n", host.c_str());
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if ( strcmp( config.http_version, "1.0" ) == 0 )
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request += stringtf( "Connection: Keep-Alive\r\n" );
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request += mAuthenticator->getAuthHeader( "GET", path.c_str() );
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request += "\r\n";
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Debug( 2, "New request header: %s", request.c_str() );
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return( 0 );
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}
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} else if ( status_code < 200 || status_code > 299 ) {
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Error( "Invalid response status %d: %s\n%s", status_code, status_mesg, (char *)buffer );
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return( -1 );
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}
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Debug( 3, "Got status '%d' (%s), http version %s", status_code, status_mesg, http_version );
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if ( connection_expr->Match( header, header_len ) == 2 ) {
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connection_type = connection_expr->MatchString( 1 );
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Debug( 3, "Got connection '%s'", connection_type );
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}
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if ( content_length_expr->Match( header, header_len ) == 2 ) {
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content_length = atoi( content_length_expr->MatchString( 1 ) );
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Debug( 3, "Got content length '%d'", content_length );
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}
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if ( content_type_expr->Match( header, header_len ) >= 2 ) {
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content_type = content_type_expr->MatchString( 1 );
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Debug( 3, "Got content type '%s'\n", content_type );
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if ( content_type_expr->MatchCount() > 2 ) {
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content_boundary = content_type_expr->MatchString( 2 );
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Debug( 3, "Got content boundary '%s'", content_boundary );
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}
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}
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if ( !strcasecmp( content_type, "image/jpeg" ) || !strcasecmp( content_type, "image/jpg" ) ) {
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// Single image
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mode = SINGLE_IMAGE;
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format = JPEG;
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state = CONTENT;
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} else if ( !strcasecmp( content_type, "image/x-rgb" ) ) {
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// Single image
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mode = SINGLE_IMAGE;
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format = X_RGB;
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state = CONTENT;
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} else if ( !strcasecmp( content_type, "image/x-rgbz" ) ) {
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// Single image
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mode = SINGLE_IMAGE;
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format = X_RGBZ;
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state = CONTENT;
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} else if ( !strcasecmp( content_type, "multipart/x-mixed-replace" ) ) {
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// Image stream, so start processing
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if ( !content_boundary[0] ) {
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Error( "No content boundary found in header '%s'", header );
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return( -1 );
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}
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mode = MULTI_IMAGE;
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state = SUBHEADER;
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}
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//else if ( !strcasecmp( content_type, "video/mpeg" ) || !strcasecmp( content_type, "video/mpg" ) )
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//{
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//// MPEG stream, coming soon!
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//}
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else {
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Error( "Unrecognised content type '%s'", content_type );
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return( -1 );
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}
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buffer.consume( header_len );
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} else {
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Debug( 3, "Unable to extract header from stream, retrying" );
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//return( -1 );
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}
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break;
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}
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case SUBHEADER :
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{
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static RegExpr *subheader_expr = nullptr;
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static RegExpr *subcontent_length_expr = nullptr;
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static RegExpr *subcontent_type_expr = nullptr;
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if ( !subheader_expr ) {
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char subheader_pattern[256] = "";
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snprintf( subheader_pattern, sizeof(subheader_pattern), "^((?:\r?\n){0,2}?(?:--)?%s\r?\n.+?\r?\n\r?\n)", content_boundary );
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subheader_expr = new RegExpr( subheader_pattern, PCRE_DOTALL );
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}
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if ( subheader_expr->Match( (char *)buffer, (int)buffer ) == 2 ) {
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subheader = subheader_expr->MatchString( 1 );
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subheader_len = subheader_expr->MatchLength( 1 );
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Debug( 4, "Captured subheader (%d bytes):'%s'", subheader_len, subheader );
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if ( !subcontent_length_expr )
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subcontent_length_expr = new RegExpr( "Content-length: ?([0-9]+)\r?\n", PCRE_CASELESS );
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if ( subcontent_length_expr->Match( subheader, subheader_len ) == 2 ) {
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content_length = atoi( subcontent_length_expr->MatchString( 1 ) );
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Debug( 3, "Got subcontent length '%d'", content_length );
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}
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if ( !subcontent_type_expr )
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subcontent_type_expr = new RegExpr( "Content-type: ?(.+?)\r?\n", PCRE_CASELESS );
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if ( subcontent_type_expr->Match( subheader, subheader_len ) == 2 ) {
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content_type = subcontent_type_expr->MatchString( 1 );
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Debug( 3, "Got subcontent type '%s'", content_type );
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}
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buffer.consume( subheader_len );
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state = CONTENT;
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} else {
|
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Debug( 3, "Unable to extract subheader from stream, retrying" );
|
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buffer_len = GetData();
|
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if ( buffer_len < 0 ) {
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Error( "Unable to extract subheader data" );
|
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return( -1 );
|
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}
|
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bytes += buffer_len;
|
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}
|
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break;
|
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}
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case CONTENT :
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{
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// if content_type is something like image/jpeg;size=, this will strip the ;size=
|
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char * semicolon = strchr( (char *)content_type, ';' );
|
|
if ( semicolon ) {
|
|
*semicolon = '\0';
|
|
}
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|
|
if ( !strcasecmp( content_type, "image/jpeg" ) || !strcasecmp( content_type, "image/jpg" ) ) {
|
|
format = JPEG;
|
|
} else if ( !strcasecmp( content_type, "image/x-rgb" ) ) {
|
|
format = X_RGB;
|
|
} else if ( !strcasecmp( content_type, "image/x-rgbz" ) ) {
|
|
format = X_RGBZ;
|
|
} else {
|
|
Error( "Found unsupported content type '%s'", content_type );
|
|
return( -1 );
|
|
}
|
|
|
|
if ( content_length ) {
|
|
while ( ((long)buffer.size() < content_length ) && ! zm_terminate ) {
|
|
Debug(3, "Need more data buffer %d < content length %d", buffer.size(), content_length );
|
|
int bytes_read = GetData();
|
|
|
|
if ( bytes_read < 0 ) {
|
|
Error( "Unable to read content" );
|
|
return( -1 );
|
|
}
|
|
bytes += bytes_read;
|
|
}
|
|
Debug( 3, "Got end of image by length, content-length = %d", content_length );
|
|
} else {
|
|
while ( !content_length ) {
|
|
buffer_len = GetData();
|
|
if ( buffer_len < 0 ) {
|
|
Error( "Unable to read content" );
|
|
return( -1 );
|
|
}
|
|
bytes += buffer_len;
|
|
static RegExpr *content_expr = 0;
|
|
if ( mode == MULTI_IMAGE ) {
|
|
if ( !content_expr ) {
|
|
char content_pattern[256] = "";
|
|
snprintf( content_pattern, sizeof(content_pattern), "^(.+?)(?:\r?\n)*(?:--)?%s\r?\n", content_boundary );
|
|
content_expr = new RegExpr( content_pattern, PCRE_DOTALL );
|
|
}
|
|
if ( content_expr->Match( buffer, buffer.size() ) == 2 ) {
|
|
content_length = content_expr->MatchLength( 1 );
|
|
Debug( 3, "Got end of image by pattern, content-length = %d", content_length );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ( mode == SINGLE_IMAGE ) {
|
|
state = HEADER;
|
|
Disconnect();
|
|
} else {
|
|
state = SUBHEADER;
|
|
}
|
|
Debug( 3, "Returning %d (%d) bytes of captured content", content_length, buffer.size() );
|
|
return content_length;
|
|
}
|
|
case HEADERCONT :
|
|
case SUBHEADERCONT :
|
|
{
|
|
// Ignore
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else
|
|
#endif // HAVE_LIBPCRE
|
|
{
|
|
static const char *http_match = "HTTP/";
|
|
static const char *connection_match = "Connection:";
|
|
static const char *content_length_match = "Content-length:";
|
|
static const char *content_type_match = "Content-type:";
|
|
static const char *boundary_match = "boundary=";
|
|
static const char *authenticate_match = "WWW-Authenticate:";
|
|
static int http_match_len = 0;
|
|
static int connection_match_len = 0;
|
|
static int content_length_match_len = 0;
|
|
static int content_type_match_len = 0;
|
|
static int boundary_match_len = 0;
|
|
static int authenticate_match_len = 0;
|
|
|
|
if ( !http_match_len )
|
|
http_match_len = strlen(http_match);
|
|
if ( !connection_match_len )
|
|
connection_match_len = strlen(connection_match);
|
|
if ( !content_length_match_len )
|
|
content_length_match_len = strlen(content_length_match);
|
|
if ( !content_type_match_len )
|
|
content_type_match_len = strlen(content_type_match);
|
|
if ( !boundary_match_len )
|
|
boundary_match_len = strlen(boundary_match);
|
|
if ( !authenticate_match_len )
|
|
authenticate_match_len = strlen(authenticate_match);
|
|
|
|
static int n_headers;
|
|
//static char *headers[32];
|
|
|
|
static int n_subheaders;
|
|
//static char *subheaders[32];
|
|
|
|
static char *http_header;
|
|
static char *connection_header;
|
|
static char *content_length_header;
|
|
static char *content_type_header;
|
|
static char *boundary_header;
|
|
static char *authenticate_header;
|
|
static char subcontent_length_header[33];
|
|
static char subcontent_type_header[65];
|
|
|
|
static char http_version[16];
|
|
static char status_code[16];
|
|
static char status_mesg[256];
|
|
static char connection_type[32];
|
|
static int content_length;
|
|
static char content_type[32];
|
|
static char content_boundary[64];
|
|
static int content_boundary_len;
|
|
|
|
while ( !zm_terminate ) {
|
|
switch ( state ) {
|
|
case HEADER :
|
|
{
|
|
n_headers = 0;
|
|
http_header = nullptr;
|
|
connection_header = nullptr;
|
|
content_length_header = nullptr;
|
|
content_type_header = nullptr;
|
|
authenticate_header = nullptr;
|
|
|
|
http_version[0] = '\0';
|
|
status_code [0]= '\0';
|
|
status_mesg [0]= '\0';
|
|
connection_type [0]= '\0';
|
|
content_length = 0;
|
|
content_type[0] = '\0';
|
|
content_boundary[0] = '\0';
|
|
content_boundary_len = 0;
|
|
}
|
|
case HEADERCONT :
|
|
{
|
|
buffer_len = GetData();
|
|
if ( buffer_len < 0 ) {
|
|
Error("Unable to read header");
|
|
return -1;
|
|
}
|
|
bytes += buffer_len;
|
|
|
|
char *crlf = nullptr;
|
|
char *header_ptr = (char *)buffer;
|
|
int header_len = buffer.size();
|
|
bool all_headers = false;
|
|
|
|
while ( true ) {
|
|
int crlf_len = memspn(header_ptr, "\r\n", header_len);
|
|
if ( n_headers ) {
|
|
if (
|
|
(crlf_len == 2 && !strncmp(header_ptr, "\n\n", crlf_len ))
|
|
||
|
|
(crlf_len == 4 && !strncmp( header_ptr, "\r\n\r\n", crlf_len ))
|
|
) {
|
|
Debug(3, "Have double linefeed, done headers");
|
|
*header_ptr = '\0';
|
|
header_ptr += crlf_len;
|
|
header_len -= buffer.consume(header_ptr-(char *)buffer);
|
|
all_headers = true;
|
|
break;
|
|
}
|
|
}
|
|
if ( crlf_len ) {
|
|
if ( header_len == crlf_len ) {
|
|
break;
|
|
} else {
|
|
*header_ptr = '\0';
|
|
header_ptr += crlf_len;
|
|
header_len -= buffer.consume(header_ptr-(char *)buffer);
|
|
}
|
|
}
|
|
|
|
Debug(6, "%s", header_ptr);
|
|
if ( (crlf = mempbrk(header_ptr, "\r\n", header_len)) ) {
|
|
//headers[n_headers++] = header_ptr;
|
|
n_headers++;
|
|
|
|
if ( !http_header && (strncasecmp(header_ptr, http_match, http_match_len) == 0) ) {
|
|
http_header = header_ptr+http_match_len;
|
|
Debug( 6, "Got http header '%s'", header_ptr );
|
|
} else if ( !connection_header && (strncasecmp(header_ptr, connection_match, connection_match_len) == 0) ) {
|
|
connection_header = header_ptr+connection_match_len;
|
|
Debug( 6, "Got connection header '%s'", header_ptr );
|
|
} else if ( !content_length_header && (strncasecmp(header_ptr, content_length_match, content_length_match_len) == 0) ) {
|
|
content_length_header = header_ptr+content_length_match_len;
|
|
Debug( 6, "Got content length header '%s'", header_ptr );
|
|
} else if ( !authenticate_header && (strncasecmp(header_ptr, authenticate_match, authenticate_match_len) == 0) ) {
|
|
authenticate_header = header_ptr;
|
|
Debug( 6, "Got authenticate header '%s'", header_ptr );
|
|
} else if ( !content_type_header && (strncasecmp(header_ptr, content_type_match, content_type_match_len) == 0) ) {
|
|
content_type_header = header_ptr+content_type_match_len;
|
|
Debug(6, "Got content type header '%s'", header_ptr);
|
|
} else {
|
|
Debug(6, "Got ignored header '%s'", header_ptr);
|
|
}
|
|
header_ptr = crlf;
|
|
header_len -= buffer.consume(header_ptr-(char *)buffer);
|
|
} else {
|
|
// No end of line found
|
|
break;
|
|
}
|
|
} // end while search for headers
|
|
|
|
if ( all_headers ) {
|
|
char *start_ptr, *end_ptr;
|
|
|
|
if ( !http_header ) {
|
|
Error("Unable to extract HTTP status from header");
|
|
return -1;
|
|
}
|
|
|
|
start_ptr = http_header;
|
|
end_ptr = start_ptr+strspn(start_ptr, "10.");
|
|
|
|
// FIXME Why are we memsetting every time? Can we not do it once?
|
|
memset(http_version, 0, sizeof(http_version));
|
|
strncpy(http_version, start_ptr, end_ptr-start_ptr);
|
|
|
|
start_ptr = end_ptr;
|
|
start_ptr += strspn(start_ptr, " ");
|
|
end_ptr = start_ptr+strspn(start_ptr, "0123456789");
|
|
|
|
memset(status_code, 0, sizeof(status_code));
|
|
strncpy(status_code, start_ptr, end_ptr-start_ptr);
|
|
int status = atoi(status_code);
|
|
|
|
start_ptr = end_ptr;
|
|
start_ptr += strspn(start_ptr, " ");
|
|
strcpy(status_mesg, start_ptr);
|
|
|
|
if ( status == 401 ) {
|
|
if ( mNeedAuth ) {
|
|
Error("Failed authentication");
|
|
return -1;
|
|
}
|
|
if ( !authenticate_header ) {
|
|
Error("Failed authentication, but don't have an authentication header.");
|
|
return -1;
|
|
}
|
|
mNeedAuth = true;
|
|
std::string Header = authenticate_header;
|
|
Debug(2, "Checking for digest auth in %s", authenticate_header);
|
|
|
|
mAuthenticator->checkAuthResponse(Header);
|
|
if ( mAuthenticator->auth_method() == zm::AUTH_DIGEST ) {
|
|
Debug(2, "Need Digest Authentication");
|
|
request = stringtf("GET %s HTTP/%s\r\n", path.c_str(), config.http_version);
|
|
request += stringtf("User-Agent: %s/%s\r\n", config.http_ua, ZM_VERSION);
|
|
request += stringtf("Host: %s\r\n", host.c_str());
|
|
if ( strcmp(config.http_version, "1.0") == 0 )
|
|
request += stringtf("Connection: Keep-Alive\r\n");
|
|
request += mAuthenticator->getAuthHeader("GET", path.c_str());
|
|
request += "\r\n";
|
|
|
|
Debug(2, "New request header: %s", request.c_str());
|
|
return 0;
|
|
} else {
|
|
Debug(2, "Need some other kind of Authentication");
|
|
}
|
|
} else if ( status < 200 || status > 299 ) {
|
|
Error("Invalid response status %s: %s", status_code, status_mesg);
|
|
return -1;
|
|
}
|
|
Debug(3, "Got status '%d' (%s), http version %s", status, status_mesg, http_version);
|
|
|
|
if ( connection_header ) {
|
|
memset(connection_type, 0, sizeof(connection_type));
|
|
start_ptr = connection_header + strspn(connection_header, " ");
|
|
// FIXME Should we not use strncpy?
|
|
strcpy(connection_type, start_ptr);
|
|
Debug(3, "Got connection '%s'", connection_type);
|
|
}
|
|
if ( content_length_header ) {
|
|
start_ptr = content_length_header + strspn(content_length_header, " ");
|
|
content_length = atoi( start_ptr );
|
|
Debug(3, "Got content length '%d'", content_length);
|
|
}
|
|
if ( content_type_header ) {
|
|
memset(content_type, 0, sizeof(content_type));
|
|
start_ptr = content_type_header + strspn(content_type_header, " ");
|
|
if ( (end_ptr = strchr(start_ptr, ';')) ) {
|
|
strncpy(content_type, start_ptr, end_ptr-start_ptr);
|
|
Debug(3, "Got content type '%s'", content_type);
|
|
|
|
start_ptr = end_ptr + strspn(end_ptr, "; ");
|
|
|
|
if ( strncasecmp(start_ptr, boundary_match, boundary_match_len) == 0 ) {
|
|
start_ptr += boundary_match_len;
|
|
start_ptr += strspn(start_ptr, "-");
|
|
content_boundary_len = sprintf(content_boundary, "--%s", start_ptr);
|
|
Debug(3, "Got content boundary '%s'", content_boundary);
|
|
} else {
|
|
Error("No content boundary found in header '%s'", content_type_header);
|
|
}
|
|
} else {
|
|
strcpy(content_type, start_ptr);
|
|
Debug(3, "Got content type '%s'", content_type);
|
|
}
|
|
} // end if content_type_header
|
|
|
|
if ( !strcasecmp(content_type, "image/jpeg") || !strcasecmp(content_type, "image/jpg") ) {
|
|
// Single image
|
|
mode = SINGLE_IMAGE;
|
|
format = JPEG;
|
|
state = CONTENT;
|
|
} else if ( !strcasecmp(content_type, "image/x-rgb") ) {
|
|
// Single image
|
|
mode = SINGLE_IMAGE;
|
|
format = X_RGB;
|
|
state = CONTENT;
|
|
} else if ( !strcasecmp(content_type, "image/x-rgbz") ) {
|
|
// Single image
|
|
mode = SINGLE_IMAGE;
|
|
format = X_RGBZ;
|
|
state = CONTENT;
|
|
} else if ( !strcasecmp(content_type, "multipart/x-mixed-replace") ) {
|
|
// Image stream, so start processing
|
|
if ( !content_boundary[0] ) {
|
|
Error("No content boundary found in header '%s'", content_type_header);
|
|
return -1;
|
|
}
|
|
mode = MULTI_IMAGE;
|
|
state = SUBHEADER;
|
|
}
|
|
//else if ( !strcasecmp( content_type, "video/mpeg" ) || !strcasecmp( content_type, "video/mpg" ) )
|
|
//{
|
|
//// MPEG stream, coming soon!
|
|
//}
|
|
else {
|
|
Error( "Unrecognised content type '%s'", content_type );
|
|
return( -1 );
|
|
}
|
|
} else {
|
|
Debug(3, "Unable to extract entire header from stream, continuing");
|
|
state = HEADERCONT;
|
|
//return( -1 );
|
|
} // end if all_headers
|
|
break;
|
|
}
|
|
case SUBHEADER :
|
|
{
|
|
n_subheaders = 0;
|
|
boundary_header = 0;
|
|
subcontent_length_header[0] = '\0';
|
|
subcontent_type_header[0] = '\0';
|
|
content_length = 0;
|
|
content_type[0] = '\0';
|
|
}
|
|
case SUBHEADERCONT :
|
|
{
|
|
char *crlf = nullptr;
|
|
char *subheader_ptr = (char *)buffer;
|
|
int subheader_len = buffer.size();
|
|
bool all_headers = false;
|
|
|
|
while( true ) {
|
|
int crlf_len = memspn( subheader_ptr, "\r\n", subheader_len );
|
|
if ( n_subheaders ) {
|
|
if ( (crlf_len == 2 && !strncmp( subheader_ptr, "\n\n", crlf_len )) || (crlf_len == 4 && !strncmp( subheader_ptr, "\r\n\r\n", crlf_len )) ) {
|
|
*subheader_ptr = '\0';
|
|
subheader_ptr += crlf_len;
|
|
subheader_len -= buffer.consume( subheader_ptr-(char *)buffer );
|
|
all_headers = true;
|
|
break;
|
|
}
|
|
}
|
|
if ( crlf_len ) {
|
|
if ( subheader_len == crlf_len ) {
|
|
break;
|
|
} else {
|
|
*subheader_ptr = '\0';
|
|
subheader_ptr += crlf_len;
|
|
subheader_len -= buffer.consume( subheader_ptr-(char *)buffer );
|
|
}
|
|
}
|
|
|
|
Debug(6, "%d: %s", subheader_len, subheader_ptr);
|
|
|
|
if ( (crlf = mempbrk(subheader_ptr, "\r\n", subheader_len)) ) {
|
|
//subheaders[n_subheaders++] = subheader_ptr;
|
|
n_subheaders++;
|
|
|
|
if ( !boundary_header && (strncasecmp(subheader_ptr, content_boundary, content_boundary_len) == 0) ) {
|
|
boundary_header = subheader_ptr;
|
|
Debug(4, "Got boundary subheader '%s'", subheader_ptr);
|
|
} else if (
|
|
!subcontent_length_header[0]
|
|
&&
|
|
(strncasecmp(subheader_ptr, content_length_match, content_length_match_len) == 0)
|
|
) {
|
|
strncpy(
|
|
subcontent_length_header,
|
|
subheader_ptr+content_length_match_len,
|
|
sizeof(subcontent_length_header)-1
|
|
);
|
|
*(subcontent_length_header+strcspn(subcontent_length_header, "\r\n")) = '\0';
|
|
Debug(4, "Got content length subheader '%s'", subcontent_length_header);
|
|
} else if ( !subcontent_type_header[0] && (strncasecmp( subheader_ptr, content_type_match, content_type_match_len) == 0) ) {
|
|
strncpy(
|
|
subcontent_type_header,
|
|
subheader_ptr+content_type_match_len,
|
|
sizeof(subcontent_type_header)-1
|
|
);
|
|
*(subcontent_type_header+strcspn(subcontent_type_header, "\r\n")) = '\0';
|
|
Debug(4, "Got content type subheader '%s'", subcontent_type_header);
|
|
} else {
|
|
Debug(6, "Got ignored subheader '%s' found", subheader_ptr);
|
|
}
|
|
subheader_ptr = crlf;
|
|
subheader_len -= buffer.consume( subheader_ptr-(char *)buffer );
|
|
} else {
|
|
// No line end found
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( all_headers && boundary_header ) {
|
|
char *start_ptr/*, *end_ptr*/;
|
|
|
|
Debug( 3, "Got boundary '%s'", boundary_header );
|
|
|
|
if ( subcontent_length_header[0] ) {
|
|
start_ptr = subcontent_length_header + strspn( subcontent_length_header, " " );
|
|
content_length = atoi( start_ptr );
|
|
Debug( 3, "Got subcontent length '%d'", content_length );
|
|
}
|
|
if ( subcontent_type_header[0] ) {
|
|
memset( content_type, 0, sizeof(content_type) );
|
|
start_ptr = subcontent_type_header + strspn( subcontent_type_header, " " );
|
|
strcpy( content_type, start_ptr );
|
|
Debug( 3, "Got subcontent type '%s'", content_type );
|
|
}
|
|
state = CONTENT;
|
|
} else {
|
|
Debug( 3, "Unable to extract subheader from stream, retrying" );
|
|
buffer_len = GetData();
|
|
if ( buffer_len < 0 ) {
|
|
Error( "Unable to read subheader" );
|
|
return( -1 );
|
|
}
|
|
bytes += buffer_len;
|
|
state = SUBHEADERCONT;
|
|
}
|
|
break;
|
|
}
|
|
case CONTENT : {
|
|
|
|
// if content_type is something like image/jpeg;size=, this will strip the ;size=
|
|
char * semicolon = strchr( content_type, ';' );
|
|
if ( semicolon ) {
|
|
*semicolon = '\0';
|
|
}
|
|
|
|
if ( !strcasecmp( content_type, "image/jpeg" ) || !strcasecmp( content_type, "image/jpg" ) ) {
|
|
format = JPEG;
|
|
} else if ( !strcasecmp( content_type, "image/x-rgb" ) ) {
|
|
format = X_RGB;
|
|
} else if ( !strcasecmp( content_type, "image/x-rgbz" ) ) {
|
|
format = X_RGBZ;
|
|
} else {
|
|
Error( "Found unsupported content type '%s'", content_type );
|
|
return( -1 );
|
|
}
|
|
|
|
// This is an early test for jpeg content, so we can bail early
|
|
if ( format == JPEG && buffer.size() >= 2 ) {
|
|
if ( buffer[0] != 0xff || buffer[1] != 0xd8 ) {
|
|
Error( "Found bogus jpeg header '%02x%02x'", buffer[0], buffer[1] );
|
|
return( -1 );
|
|
}
|
|
}
|
|
|
|
if ( content_length ) {
|
|
while ( ( (long)buffer.size() < content_length ) && ! zm_terminate ) {
|
|
Debug(4, "getting more data");
|
|
int bytes_read = GetData();
|
|
if ( bytes_read < 0 ) {
|
|
Error("Unable to read content");
|
|
return -1;
|
|
}
|
|
bytes += bytes_read;
|
|
}
|
|
Debug( 3, "Got end of image by length, content-length = %d", content_length );
|
|
} else {
|
|
// Read until we find the end of image or the stream closes.
|
|
while ( !content_length && !zm_terminate ) {
|
|
Debug(4, "!content_length, ReadData");
|
|
buffer_len = ReadData( buffer );
|
|
if ( buffer_len < 0 ) {
|
|
Error( "Unable to read content" );
|
|
return( -1 );
|
|
}
|
|
bytes += buffer_len;
|
|
int buffer_size = buffer.size();
|
|
if ( buffer_len ) {
|
|
// Got some data
|
|
|
|
if ( mode == MULTI_IMAGE ) {
|
|
// Look for the boundary marker, determine content length using it's position
|
|
if ( char *start_ptr = (char *)memstr( (char *)buffer, "\r\n--", buffer_size ) ) {
|
|
content_length = start_ptr - (char *)buffer;
|
|
Debug( 2, "Got end of image by pattern (crlf--), content-length = %d", content_length );
|
|
} else {
|
|
Debug( 2, "Did not find end of image by patten (crlf--) yet, content-length = %d", content_length );
|
|
}
|
|
} // end if MULTI_IMAGE
|
|
} else {
|
|
content_length = buffer_size;
|
|
Debug( 2, "Got end of image by closure, content-length = %d", content_length );
|
|
if ( mode == SINGLE_IMAGE ) {
|
|
char *end_ptr = (char *)buffer+buffer_size;
|
|
|
|
// strip off any last line feeds
|
|
while( *end_ptr == '\r' || *end_ptr == '\n' ) {
|
|
content_length--;
|
|
end_ptr--;
|
|
}
|
|
|
|
if ( end_ptr != ((char *)buffer+buffer_size) ) {
|
|
Debug( 2, "Trimmed end of image, new content-length = %d", content_length );
|
|
}
|
|
} // end if SINGLE_IMAGE
|
|
} // end if read some data
|
|
} // end while ! content_length
|
|
} // end if content_length
|
|
|
|
if ( mode == SINGLE_IMAGE ) {
|
|
state = HEADER;
|
|
Disconnect();
|
|
} else {
|
|
state = SUBHEADER;
|
|
}
|
|
|
|
if ( format == JPEG && buffer.size() >= 2 ) {
|
|
if ( buffer[0] != 0xff || buffer[1] != 0xd8 ) {
|
|
Error( "Found bogus jpeg header '%02x%02x'", buffer[0], buffer[1] );
|
|
return( -1 );
|
|
}
|
|
}
|
|
|
|
Debug(3, "Returning %d bytes, buffer size: (%d) bytes of captured content",
|
|
content_length, buffer.size());
|
|
return content_length;
|
|
} // end case CONTENT
|
|
} // end switch
|
|
}
|
|
}
|
|
return 0;
|
|
} // end RemoteCameraHttp::GetResponse
|
|
|
|
int RemoteCameraHttp::PrimeCapture() {
|
|
if ( sd < 0 ) {
|
|
Connect();
|
|
if ( sd < 0 ) {
|
|
return -1;
|
|
}
|
|
mode = SINGLE_IMAGE;
|
|
buffer.clear();
|
|
}
|
|
get_VideoStream();
|
|
return 1;
|
|
}
|
|
|
|
int RemoteCameraHttp::PreCapture() {
|
|
if ( sd < 0 ) {
|
|
Connect();
|
|
if ( sd < 0 ) {
|
|
return -1;
|
|
}
|
|
mode = SINGLE_IMAGE;
|
|
buffer.clear();
|
|
}
|
|
if ( mode == SINGLE_IMAGE ) {
|
|
if ( SendRequest() < 0 ) {
|
|
Error("Unable to send request");
|
|
Disconnect();
|
|
return -1;
|
|
}
|
|
}
|
|
return 1;
|
|
} // end int RemoteCameraHttp::PreCapture()
|
|
|
|
int RemoteCameraHttp::Capture(ZMPacket &packet) {
|
|
int content_length = GetResponse();
|
|
if ( content_length == 0 ) {
|
|
Warning( "Unable to capture image, retrying" );
|
|
return 0;
|
|
}
|
|
if ( content_length < 0 ) {
|
|
Error( "Unable to get response, disconnecting" );
|
|
Disconnect();
|
|
return -1;
|
|
}
|
|
|
|
if ( !packet.image ) {
|
|
Debug(1, "Allocating image");
|
|
packet.image = new Image(width, height, colours, subpixelorder);
|
|
}
|
|
Image *image = packet.image;
|
|
packet.keyframe = 1;
|
|
packet.codec_type = AVMEDIA_TYPE_VIDEO;
|
|
packet.packet.stream_index = mVideoStreamId;
|
|
|
|
switch ( format ) {
|
|
case JPEG :
|
|
if ( !image->DecodeJpeg(buffer.extract(content_length), content_length, colours, subpixelorder) ) {
|
|
Error("Unable to decode jpeg");
|
|
Disconnect();
|
|
return -1;
|
|
}
|
|
break;
|
|
case X_RGB :
|
|
if ( content_length != (long)image->Size() ) {
|
|
Error("Image length mismatch, expected %d bytes, content length was %d",
|
|
image->Size(), content_length);
|
|
Disconnect();
|
|
return -1;
|
|
}
|
|
image->Assign(width, height, colours, subpixelorder, buffer, imagesize);
|
|
break;
|
|
case X_RGBZ :
|
|
if ( !image->Unzip( buffer.extract( content_length ), content_length ) ) {
|
|
Error("Unable to unzip RGB image");
|
|
Disconnect();
|
|
return -1;
|
|
}
|
|
image->Assign(width, height, colours, subpixelorder, buffer, imagesize);
|
|
break;
|
|
default :
|
|
Error("Unexpected image format encountered");
|
|
Disconnect();
|
|
return -1;
|
|
}
|
|
return 1;
|
|
} // end ZmPacket *RmoteCameraHttp::Capture( &image );
|
|
|
|
int RemoteCameraHttp::PostCapture() {
|
|
return 1;
|
|
}
|