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mscangtwyd_cli.c
252 lines (176 loc) · 6.06 KB
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mscangtwyd_cli.c
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/*
*
*/
#include "mscangtwyd_cli.h"
int sfd;
int main( int argc, char *argv[] ){
struct sockaddr_un addr;
int optchar, debug;
unsigned int timeout = 0;
ssize_t numRead;
char buf[BUF_SIZE], sockPathBuffer[ PATH_MAX ];
enum BINARY_MODE clientMode = COMMANDLINE;
pthread_t THreaderSocket, THwriterSocket;
memset( sockPathBuffer, NUL_BYTE, sizeof( sockPathBuffer ) );
strncpy( sockPathBuffer, MSCANGTWYD_UXDOSOCK_PATH, sizeof( MSCANGTWYD_UXDOSOCK_PATH ) );
/* command line args parsing - getopt */
while( ( optchar = getopt( argc, argv, "chs:t:v" ) ) != -1 ){
switch( optchar ){
/* console mode */
case 'c':
PRINT_DEBUG( "getopt: %c\n", optchar );
clientMode = CONSOLE;
break;
/* show help or usage */
case 'h':
PRINT_DEBUG( "getopt: %c\n", optchar );
usage( argv[0] );
exit( EXIT_FAILURE );
break;
/* unix domain socket path */
case 's':
PRINT_DEBUG( "getopt: %c: %s\n", ( char )optchar, optarg );
if( PATH_MAX < strlen( optarg ) ){
PRINT_DEBUG( "Path longer than %d\n", PATH_MAX );
usage( argv[0] );
exit( EXIT_FAILURE );
}
memset( sockPathBuffer, NUL_BYTE, sizeof( sockPathBuffer ) );
strncpy( sockPathBuffer, optarg, ( size_t )( PATH_MAX - 1 ) );
PRINT_DEBUG( "%s\n", sockPathBuffer );
break;
/* timeout in seconds */
case 't':
PRINT_DEBUG( "getopt: %c: %s\n", ( char )optchar, optarg );
timeout = atoi( optarg );
if( ( TIMEOUT_MAX < timeout ) || ( TIMEOUT_MIN > timeout ) ){
fprintf( stderr, "Invaid timeout duration specified\n" );
usage( argv[0] );
exit( EXIT_FAILURE );
}
break;
case 'v':
PRINT_DEBUG( "getopt: %c: %s\n", ( char )optchar, optarg );
fprintf( stderr, "%s %.2f\n", argv[0], SOFTWARE_VERSION );
exit( EXIT_SUCCESS );
break;
default:
usage( argv[0] );
exit( EXIT_FAILURE );
}
}
/* catch none or non-valid cmdline options in console mode */
if( CONSOLE == clientMode ){
PRINT_DEBUG( "optind: %d argc: %d\n", optind, argc );
if( ( 1 == argc ) || ( optind != argc ) ){
usage( argv[0] );
exit( EXIT_FAILURE );
}
if( 0 != timeout ){
fprintf( stderr, "Timeout is an invalid option in console mode\n" );
usage( argv[0] );
exit( EXIT_FAILURE );
}
}
if( COMMANDLINE == clientMode ){
PRINT_DEBUG( "optind: %d argc: %d\n", optind, argc );
if( ( 1 == argc ) || ( optind == argc ) ){
usage( argv[0] );
exit( EXIT_FAILURE );
}
if( 0 == timeout ){
fprintf( stderr, "Timeout must be specified in command line mode\n" );
usage( argv[0] );
exit( EXIT_FAILURE );
}
}
PRINT_DEBUG( "optind: %d argc: %d\n", optind, argc );
/* Create client unix domain socket */
sfd = socket(AF_UNIX, SOCK_STREAM, 0);
if( -1 == sfd ){
perror("socket");
exit( EXIT_FAILURE );
}
/* Construct server address, and make the connection */
memset( &addr, 0, sizeof( struct sockaddr_un ) );
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, MSCANGTWYD_UXDOSOCK_PATH, sizeof( addr.sun_path ) - 1 );
if( connect( sfd, ( struct sockaddr * )&addr, sizeof( struct sockaddr_un ) ) == -1){
perror( "connect" );
exit( EXIT_FAILURE );
}
pthread_create( &THwriterSocket, NULL, &socketWriter, NULL);
pthread_create( &THreaderSocket, NULL, &socketReader, NULL);
if( CONSOLE == clientMode ){
pthread_join( THwriterSocket, NULL);
pthread_cancel( THreaderSocket );
pthread_join( THreaderSocket, NULL);
}
close( sfd );
/* Closes our socket; server sees EOF */
exit( EXIT_SUCCESS );
}
static void usage( const char *binaryname ){
fprintf(stderr,
"Usage: %s [<options>] [<mscan-packets>]\n\n"
"Options:\n"
"\t-c console mode\n"
"\t -default: commmand line mode\n"
"\t-h usage help\n"
"\t-t <num> timeout in seconds ( non-console mode only )\n"
"\t -duration: %d to %d seconds\n"
"\t-s <path> path to server socket file\n"
"\t -max: %d characters\n"
"\t-v version\n"
"\n",
binaryname, TIMEOUT_MIN, TIMEOUT_MAX, PATH_MAX
);
}
static void *socketReader( void *sockReadArg ){
char readBuffer[ LINE_BUFFER_SIZE ];
int threadReturn = 0;
ssize_t bytesRead;
memset( readBuffer, NUL_BYTE, sizeof( readBuffer ) );
while( ( bytesRead = read( sfd, readBuffer, LINE_BUFFER_SIZE ) ) > 0 ){
if( bytesRead != write( STDOUT_FILENO, readBuffer, ( size_t )bytesRead ) ){
perror( "write" );
threadReturn = 1;
pthread_exit( &threadReturn );
}
memset( readBuffer, NUL_BYTE, sizeof( readBuffer ) );
}
threadReturn = 0;
pthread_exit( &threadReturn );
}
static void *socketWriter( void *sockWriteArg ){
char *line;
int threadReturn = 0;
size_t len = ( size_t )LINE_BUFFER_SIZE;
ssize_t bytesRead, bytesWrote;
line = ( char * )malloc( ( size_t )( LINE_BUFFER_SIZE * sizeof( char ) ) );
if( NULL == line ){
perror( "malloc" );
threadReturn = 1;
pthread_exit( &threadReturn );
}
assert( NULL != line );
printf( "Type 'exit' to quit.\n" );
while( -1 != ( bytesRead = getline( &line, &len, stdin ) ) ){
if( 0 == strncmp( line, "exit", ( sizeof( "exit" ) - sizeof( NUL_BYTE ) ) ) ){
break;
}
printf("Retrieved line of length %zu :\n", bytesRead );
printf("%s", line);
if( -1 == ( bytesWrote = write( sfd, line, bytesRead ) ) ){
perror( "write" );
PRINT_DEBUG( "Error while writing to socket.\n" );
}
if( bytesWrote < bytesRead ){
PRINT_DEBUG( "Partial or incomplete write to socket.\n" );
}
memset( line, NUL_BYTE, sizeof( line ) );
}
free( line );
threadReturn = 0;
pthread_exit( &threadReturn );
}