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Revert two commits (screencap and start named processes)

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This commit is contained in:
Keith Winstein
2012-01-24 02:37:47 -05:00
parent 9d4ac0acc6
commit 24653462ce
5 changed files with 16 additions and 348 deletions
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Makefile
+2 -5
View File
@@ -1,7 +1,7 @@
proto = userinput.proto hostinput.proto transportinstruction.proto
source = parse.cpp parserstate.cpp parser.cpp terminal.cpp termemu.cpp parseraction.cpp terminalfunctions.cpp swrite.cpp terminalframebuffer.cpp terminaldispatcher.cpp terminaluserinput.cpp terminaldisplay.cpp network.cpp ntester.cpp ocb.cpp base64.cpp encrypt.cpp decrypt.cpp crypto.cpp networktransport.cpp transportfragment.cpp user.cpp userinput.pb.cc completeterminal.cpp stm-server.cpp stm.cpp transportinstruction.pb.cc transportsender.cpp stmclient.cpp terminaloverlay.cpp hostinput.pb.cc screencap.cpp
source = parse.cpp parserstate.cpp parser.cpp terminal.cpp termemu.cpp parseraction.cpp terminalfunctions.cpp swrite.cpp terminalframebuffer.cpp terminaldispatcher.cpp terminaluserinput.cpp terminaldisplay.cpp network.cpp ntester.cpp ocb.cpp base64.cpp encrypt.cpp decrypt.cpp crypto.cpp networktransport.cpp transportfragment.cpp user.cpp userinput.pb.cc completeterminal.cpp stm-server.cpp stm.cpp transportinstruction.pb.cc transportsender.cpp stmclient.cpp terminaloverlay.cpp hostinput.pb.cc
objects = parserstate.o parser.o terminal.o parseraction.o terminalfunctions.o swrite.o terminalframebuffer.o terminaldispatcher.o terminaluserinput.o terminaldisplay.o network.o ocb.o base64.o crypto.o networktransport.o transportfragment.o user.o userinput.pb.o completeterminal.o transportinstruction.pb.o transportsender.o stmclient.o terminaloverlay.o hostinput.pb.o
executables = parse termemu ntester encrypt decrypt stm-server stm screencap
executables = parse termemu ntester encrypt decrypt stm-server stm
CXX = g++
CXXFLAGS = -g -O2 --std=c++0x -pedantic -Werror -Wall -Wextra -Weffc++ -fno-default-inline -pipe -D_FILE_OFFSET_BITS=64 -D_XOPEN_SOURCE=500 -D_GNU_SOURCE -D_BSD_SOURCE
@@ -16,9 +16,6 @@ parse: parse.o $(objects)
termemu: termemu.o $(objects)
$(CXX) $(CXXFLAGS) -o $@ termemu.o $(objects) $(LIBS)
screencap: screencap.o $(objects)
$(CXX) $(CXXFLAGS) -o $@ screencap.o $(objects) $(LIBS)
ntester: ntester.o $(objects)
$(CXX) $(CXXFLAGS) -o $@ ntester.o $(objects) $(LIBS)
screencap.cpp
-280
View File
@@ -1,280 +0,0 @@
#include <pty.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#include <poll.h>
#include <string.h>
#include <locale.h>
#include <langinfo.h>
#include <wchar.h>
#include <assert.h>
#include <wctype.h>
#include <iostream>
#include <typeinfo>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/signalfd.h>
#include <termios.h>
#include <sys/types.h>
#include <pwd.h>
#include <sys/time.h>
#include "parser.hpp"
#include "completeterminal.hpp"
#include "swrite.hpp"
const size_t buf_size = 16384;
void emulate_terminal( int fd );
int main( void )
{
int master;
struct termios saved_termios, raw_termios, child_termios;
if ( NULL == setlocale( LC_ALL, "" ) ) {
perror( "setlocale" );
exit( 1 );
}
if ( strcmp( nl_langinfo( CODESET ), "UTF-8" ) != 0 ) {
fprintf( stderr, "stm requires a UTF-8 locale.\n" );
exit( 1 );
}
if ( tcgetattr( STDIN_FILENO, &saved_termios ) < 0 ) {
perror( "tcgetattr" );
exit( 1 );
}
child_termios = saved_termios;
if ( !(child_termios.c_iflag & IUTF8) ) {
fprintf( stderr, "Warning: Locale is UTF-8 but termios IUTF8 flag not set. Setting IUTF8 flag.\n" );
child_termios.c_iflag |= IUTF8;
}
pid_t child = forkpty( &master, NULL, &child_termios, NULL );
if ( child == -1 ) {
perror( "forkpty" );
exit( 1 );
}
if ( child == 0 ) {
/* child */
if ( setenv( "TERM", "xterm", true ) < 0 ) {
perror( "setenv" );
exit( 1 );
}
/* ask ncurses to send UTF-8 instead of ISO 2022 for line-drawing chars */
if ( setenv( "NCURSES_NO_UTF8_ACS", "1", true ) < 0 ) {
perror( "setenv" );
exit( 1 );
}
/* get shell name */
struct passwd *pw = getpwuid( geteuid() );
if ( pw == NULL ) {
perror( "getpwuid" );
exit( 1 );
}
char *my_argv[ 2 ];
my_argv[ 0 ] = strdup( pw->pw_shell );
assert( my_argv[ 0 ] );
my_argv[ 1 ] = NULL;
if ( execve( pw->pw_shell, my_argv, environ ) < 0 ) {
perror( "execve" );
exit( 1 );
}
exit( 0 );
} else {
/* parent */
raw_termios = saved_termios;
cfmakeraw( &raw_termios );
if ( tcsetattr( STDIN_FILENO, TCSANOW, &raw_termios ) < 0 ) {
perror( "tcsetattr" );
exit( 1 );
}
emulate_terminal( master );
if ( tcsetattr( STDIN_FILENO, TCSANOW, &saved_termios ) < 0 ) {
perror( "tcsetattr" );
exit( 1 );
}
}
printf( "[stm is exiting.]\n" );
return 0;
}
/* Print a frame */
void tick( Terminal::Framebuffer &state, const Terminal::Framebuffer &new_frame )
{
static bool initialized = false;
if ( !(state == new_frame) ) {
Terminal::Display::debug_print( new_frame );
}
std::string update = Terminal::Display::new_frame( initialized, state, new_frame );
swrite( STDOUT_FILENO, update.c_str() );
state = new_frame;
initialized = true;
}
/* This is the main loop.
1. New bytes from the user get applied to the terminal emulator
as "UserByte" actions.
2. New bytes from the host get sent to the Parser, and then
those actions are applied to the terminal.
3. Resize events (from a SIGWINCH signal) get turned into
"Resize" actions and applied to the terminal.
At every event from poll(), we run the tick() function to
possibly print a new frame (if we haven't printed one in the
last 1/50 second). The new frames are "differential" -- they
assume the previous frame was sent to the real terminal.
*/
void emulate_terminal( int fd )
{
/* establish WINCH fd and start listening for signal */
sigset_t signal_mask;
assert( sigemptyset( &signal_mask ) == 0 );
assert( sigaddset( &signal_mask, SIGWINCH ) == 0 );
/* stop "ignoring" WINCH signal */
assert( sigprocmask( SIG_BLOCK, &signal_mask, NULL ) == 0 );
int winch_fd = signalfd( -1, &signal_mask, 0 );
if ( winch_fd < 0 ) {
perror( "signalfd" );
return;
}
/* get current window size */
struct winsize window_size;
if ( ioctl( STDIN_FILENO, TIOCGWINSZ, &window_size ) < 0 ) {
perror( "ioctl TIOCGWINSZ" );
return;
}
/* tell child process */
if ( ioctl( fd, TIOCSWINSZ, &window_size ) < 0 ) {
perror( "ioctl TIOCSWINSZ" );
return;
}
/* open parser and terminal */
Terminal::Complete complete( window_size.ws_col, window_size.ws_row );
Terminal::Framebuffer state( window_size.ws_col, window_size.ws_row );
struct pollfd pollfds[ 3 ];
pollfds[ 0 ].fd = STDIN_FILENO;
pollfds[ 0 ].events = POLLIN;
pollfds[ 1 ].fd = fd;
pollfds[ 1 ].events = POLLIN;
pollfds[ 2 ].fd = winch_fd;
pollfds[ 2 ].events = POLLIN;
swrite( STDOUT_FILENO, Terminal::Emulator::open().c_str() );
while ( 1 ) {
int active_fds = poll( pollfds, 3, -1 );
if ( active_fds < 0 ) {
perror( "poll" );
break;
}
if ( pollfds[ 0 ].revents & POLLIN ) {
/* input from user */
char buf[ buf_size ];
/* fill buffer if possible */
ssize_t bytes_read = read( pollfds[ 0 ].fd, buf, buf_size );
if ( bytes_read == 0 ) { /* EOF */
return;
} else if ( bytes_read < 0 ) {
perror( "read" );
return;
}
std::string terminal_to_host;
for ( int i = 0; i < bytes_read; i++ ) {
Parser::UserByte ub( buf[ i ] );
terminal_to_host += complete.act( &ub );
}
if ( swrite( fd, terminal_to_host.c_str(), terminal_to_host.length() ) < 0 ) {
break;
}
} else if ( pollfds[ 1 ].revents & POLLIN ) {
/* input from host */
char buf[ buf_size ];
/* fill buffer if possible */
ssize_t bytes_read = read( pollfds[ 1 ].fd, buf, buf_size );
if ( bytes_read == 0 ) { /* EOF */
return;
} else if ( bytes_read < 0 ) {
perror( "read" );
return;
}
std::string terminal_to_host = complete.act( std::string( buf, bytes_read ) );
if ( swrite( fd, terminal_to_host.c_str(), terminal_to_host.length() ) < 0 ) {
break;
}
} else if ( pollfds[ 2 ].revents & POLLIN ) {
/* resize */
struct signalfd_siginfo info;
assert( read( winch_fd, &info, sizeof( info ) ) == sizeof( info ) );
assert( info.ssi_signo == SIGWINCH );
/* get new size */
if ( ioctl( STDIN_FILENO, TIOCGWINSZ, &window_size ) < 0 ) {
perror( "ioctl TIOCGWINSZ" );
return;
}
/* tell emulator */
Parser::Resize r( window_size.ws_col, window_size.ws_row );
complete.act( &r );
/* tell child process */
if ( ioctl( fd, TIOCSWINSZ, &window_size ) < 0 ) {
perror( "ioctl TIOCSWINSZ" );
return;
}
} else if ( (pollfds[ 0 ].revents | pollfds[ 1 ].revents)
& (POLLERR | POLLHUP | POLLNVAL) ) {
break;
}
tick( state, complete.get_fb() );
}
std::string update = Terminal::Display::new_frame( true, state, complete.get_fb() );
swrite( STDOUT_FILENO, update.c_str() );
swrite( STDOUT_FILENO, Terminal::Emulator::close().c_str() );
}
stm-server.cpp
+13 -29
View File
@@ -24,7 +24,7 @@ void serve( int host_fd );
using namespace std;
int main( int argc, char *argv[] )
int main( void )
{
int master;
struct termios child_termios;
@@ -80,36 +80,20 @@ int main( int argc, char *argv[] )
}
/* get shell name */
if ( argc <= 1 ) {
struct passwd *pw = getpwuid( geteuid() );
if ( pw == NULL ) {
perror( "getpwuid" );
exit( 1 );
}
struct passwd *pw = getpwuid( geteuid() );
if ( pw == NULL ) {
perror( "getpwuid" );
exit( 1 );
}
char *my_argv[ 2 ];
my_argv[ 0 ] = strdup( pw->pw_shell );
assert( my_argv[ 0 ] );
my_argv[ 1 ] = NULL;
char *my_argv[ 2 ];
my_argv[ 0 ] = strdup( pw->pw_shell );
assert( my_argv[ 0 ] );
my_argv[ 1 ] = NULL;
if ( execve( pw->pw_shell, my_argv, environ ) < 0 ) {
perror( "execve" );
exit( 1 );
}
} else {
char **my_argv = (char **)malloc( (argc - 1) * sizeof( char * ) );
assert( my_argv );
for ( int i = 0; i < argc - 1; i++ ) {
my_argv[ i ] = strdup( argv[ i + 1 ] );
assert( my_argv[ i ] );
my_argv[ argc - 1 ] = NULL;
}
if ( execve( my_argv[ 0 ], my_argv, environ ) < 0 ) {
perror( "execve" );
exit( 1 );
}
if ( execve( pw->pw_shell, my_argv, environ ) < 0 ) {
perror( "execve" );
exit( 1 );
}
exit( 0 );
} else {
terminaldisplay.cpp
-32
View File
@@ -1,6 +1,4 @@
#include <assert.h>
#include <sys/time.h>
#include <wchar.h>
#include "terminaldisplay.hpp"
@@ -254,33 +252,3 @@ void FrameState::append_silent_move( int y, int x )
cursor_x = x;
cursor_y = y;
}
void Display::debug_print( const Framebuffer &fb )
{
struct timeval tv;
gettimeofday( &tv, NULL );
double the_time = tv.tv_sec * 1000 + double(tv.tv_usec) / 1000.0;
fprintf( stderr, "%f ", the_time );
for ( int y = 0; y < fb.ds.get_height(); y++ ) {
for ( int x = 0; x < fb.ds.get_width(); x++ ) {
const Cell *cell = fb.get_cell( y, x );
if ( cell->contents.empty() ) {
fprintf( stderr, "_" );
} else {
wchar_t first = cell->contents.front();
if ( (first > 254) || (first < 0x20) ) {
fprintf( stderr, "&" );
} else {
fprintf( stderr, "%c", (char)first );
}
}
}
}
fprintf( stderr, "\n" );
fflush( stderr );
}
terminaldisplay.hpp
-1
View File
@@ -35,7 +35,6 @@ namespace Terminal {
public:
static std::string new_frame( bool initialized, const Framebuffer &last, const Framebuffer &f );
static void debug_print( const Framebuffer &fb );
};
}