diff options
Diffstat (limited to 'krfb/libvncserver/1instance.c')
-rw-r--r-- | krfb/libvncserver/1instance.c | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/krfb/libvncserver/1instance.c b/krfb/libvncserver/1instance.c deleted file mode 100644 index 8feadb53..00000000 --- a/krfb/libvncserver/1instance.c +++ /dev/null @@ -1,141 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> -#include <string.h> -#include <unistd.h> -#include <stdio.h> - -typedef struct { - char* filename; /* this file is the pipe (set by user) */ - char is_server; /* this is set by open_control_file */ - int fd; /* this is set by open_control_file */ -} single_instance_struct; - -/* returns fd, is_server is set to -1 if server, 0 if client */ -int open_control_file(single_instance_struct* str) -{ - struct stat buf; - - if(stat(str->filename,&buf)) { - mkfifo(str->filename,128|256); - str->is_server=-1; - str->fd=open(str->filename,O_NONBLOCK|O_RDONLY); - } else { - str->fd=open(str->filename,O_NONBLOCK|O_WRONLY); - if(errno==ENXIO) { - str->is_server=-1; - str->fd=open(str->filename,O_NONBLOCK|O_RDONLY); - } else - str->is_server=0; - } - - return(str->fd); -} - -void delete_control_file(single_instance_struct* str) -{ - remove(str->filename); -} - -void close_control_file(single_instance_struct* str) -{ - close(str->fd); -} - -typedef void (*event_dispatcher)(char* message); - -int get_next_message(char* buffer,int len,single_instance_struct* str,int usecs) -{ - struct timeval tv; - fd_set fdset; - int num_fds; - - FD_ZERO(&fdset); - FD_SET(str->fd,&fdset); - tv.tv_sec=0; - tv.tv_usec=usecs; - - num_fds=select(str->fd+1,&fdset,NULL,NULL,&tv); - if(num_fds) { - int reallen; - - reallen=read(str->fd,buffer,len); - if(reallen==0) { - close(str->fd); - str->fd=open(str->filename,O_NONBLOCK|O_RDONLY); - num_fds--; - } - buffer[reallen]=0; -#ifdef DEBUG_1INSTANCE - if(reallen!=0) fprintf(stderr,"message received: %s.\n",buffer); -#endif - } - - return(num_fds); -} - -int dispatch_event(single_instance_struct* str,event_dispatcher dispatcher,int usecs) -{ - char buffer[1024]; - int num_fds; - - if((num_fds=get_next_message(buffer,1024,str,usecs)) && buffer[0]) - dispatcher(buffer); - - return(num_fds); -} - -int loop_if_server(single_instance_struct* str,event_dispatcher dispatcher) -{ - open_control_file(str); - if(str->is_server) { - while(1) - dispatch_event(str,dispatcher,50); - } - - return(str->fd); -} - -void send_message(single_instance_struct* str,char* message) -{ -#ifdef DEBUG_1INSTANCE - int i= -#endif - write(str->fd,message,strlen(message)); -#ifdef DEBUG_1INSTANCE - fprintf(stderr,"send: %s => %d(%d)\n",message,i,strlen(message)); -#endif -} - -#ifdef DEBUG_MAIN - -#include <stdio.h> -#include <stdlib.h> - -single_instance_struct str1 = { "/tmp/1instance" }; - -void my_dispatcher(char* message) -{ -#ifdef DEBUG_1INSTANCE - fprintf(stderr,"Message arrived: %s.\n",message); -#endif - if(!strcmp(message,"quit")) { - delete_control_file(str1); - exit(0); - } -} - -int main(int argc,char** argv) -{ - int i; - - loop_if_server(str1,my_dispatcher); - - for(i=1;i<argc;i++) - send_event(str1,argv[i]); - - return(0); -} - -#endif |