/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <plumb.h> char *plumbfile = nil;Plumbmsg m; voidusage(void){	fprint(2, "usage:  plumb [-p plumbfile] [-a 'attr=value ...'] [-s src] [-d dst] [-t type] [-w wdir] -i | data1\n");	exits("usage");} voidgather(void){	char buf[8192];	int n; 	m.ndata = 0;	m.data = nil;	while((n = read(0, buf, sizeof buf)) > 0){		m.data = realloc(m.data, m.ndata+n);		if(m.data == nil){			fprint(2, "plumb: alloc failed: %r\n");			exits("alloc");		}		memmove(m.data+m.ndata, buf, n);		m.ndata += n;	}	if(n < 0){		fprint(2, "plumb: i/o error on input: %r\n");		exits("read");	}} voidmain(int argc, char *argv[]){	char buf[1024], *p;	int fd, i, input; 	input = 0;	m.src = "plumb";	m.dst = nil;	m.wdir = getwd(buf, sizeof buf);	m.type = "text";	m.attr = nil;	ARGBEGIN{	case 'a':		p = ARGF();		if(p == nil)			usage();		m.attr = plumbaddattr(m.attr, plumbunpackattr(p));		break;	case 'd':		m.dst = ARGF();		if(m.dst == nil)			usage();		break;	case 'i':		input++;		break;	case 't':	case 'k':	/* for backwards compatibility */		m.type = ARGF();		if(m.type == nil)			usage();		break;	case 'p':		plumbfile = ARGF();		if(plumbfile == nil)			usage();		break;	case 's':		m.src = ARGF();		if(m.src == nil)			usage();		break;	case 'w':		m.wdir = ARGF();		if(m.wdir == nil)			usage();		break;	}ARGEND 	if((input && argc>0) || (!input && argc<1))		usage();	if(plumbfile != nil)		fd = open(plumbfile, OWRITE);	else		fd = plumbopen("send", OWRITE);	if(fd < 0){		fprint(2, "plumb: can't open plumb file: %r\n");		exits("open");	}	if(input){		gather();		if(plumblookup(m.attr, "action") == nil)			m.attr = plumbaddattr(m.attr, plumbunpackattr("action=showdata"));		if(plumbsend(fd, &m) < 0){			fprint(2, "plumb: can't send message: %r\n");			exits("error");		}		exits(nil);	}	for(i=0; i<argc; i++){		if(input == 0){			m.data = argv[i];			m.ndata = -1;		}		if(plumbsend(fd, &m) < 0){			fprint(2, "plumb: can't send message: %r\n");			exits("error");		}	}	exits(nil);}