1 be22ae2d 2004-03-26 devnull #include <u.h>
  2 941c9f36 2003-10-11 devnull #include <sys/types.h>
  3 941c9f36 2003-10-11 devnull #include <sys/stat.h>
  4 941c9f36 2003-10-11 devnull #include <errno.h>
  5 941c9f36 2003-10-11 devnull 
  6 84b1cb73 2003-09-30 devnull #include <u.h>
  7 84b1cb73 2003-09-30 devnull #include <libc.h>
  8 84b1cb73 2003-09-30 devnull #include <draw.h>
  9 84b1cb73 2003-09-30 devnull #include <thread.h>
 10 84b1cb73 2003-09-30 devnull #include <mouse.h>
 11 84b1cb73 2003-09-30 devnull #include <cursor.h>
 12 84b1cb73 2003-09-30 devnull #include <keyboard.h>
 13 84b1cb73 2003-09-30 devnull #include <frame.h>
 14 2277c5d7 2004-03-21 devnull #define Tversion Tversion9p
 15 2277c5d7 2004-03-21 devnull #define Twrite Twrite9p
 16 2277c5d7 2004-03-21 devnull #include <fcall.h>
 17 2277c5d7 2004-03-21 devnull #undef Tversion
 18 2277c5d7 2004-03-21 devnull #undef Twrite
 19 d4045724 2005-01-04 devnull #include <9pclient.h>
 20 af78a4cd 2004-03-02 devnull #include <plumb.h>
 21 84b1cb73 2003-09-30 devnull #include "flayer.h"
 22 84b1cb73 2003-09-30 devnull #include "samterm.h"
 23 84b1cb73 2003-09-30 devnull 
 24 941c9f36 2003-10-11 devnull static char *exname;
 25 84b1cb73 2003-09-30 devnull 
 26 64bcfff3 2003-11-25 devnull #define STACK 16384
 27 912fba95 2003-11-24 devnull 
 28 84b1cb73 2003-09-30 devnull void
 29 17ab31aa 2005-01-27 devnull usage(void)
 30 17ab31aa 2005-01-27 devnull {
 31 17ab31aa 2005-01-27 devnull 	fprint(2, "usage: samterm -a -W winsize\n");
 32 17ab31aa 2005-01-27 devnull 	threadexitsall("usage");
 33 17ab31aa 2005-01-27 devnull }
 34 17ab31aa 2005-01-27 devnull 
 35 17ab31aa 2005-01-27 devnull void
 36 84b1cb73 2003-09-30 devnull getscreen(int argc, char **argv)
 37 84b1cb73 2003-09-30 devnull {
 38 84b1cb73 2003-09-30 devnull 	char *t;
 39 84b1cb73 2003-09-30 devnull 
 40 17ab31aa 2005-01-27 devnull 	ARGBEGIN{
 41 17ab31aa 2005-01-27 devnull 	case 'a':
 42 17ab31aa 2005-01-27 devnull 		autoindent = 1;
 43 17ab31aa 2005-01-27 devnull 		break;
 44 17ab31aa 2005-01-27 devnull 	case 'W':
 45 17ab31aa 2005-01-27 devnull 		winsize = EARGF(usage());
 46 17ab31aa 2005-01-27 devnull 		break;
 47 17ab31aa 2005-01-27 devnull 	default:
 48 17ab31aa 2005-01-27 devnull 		usage();
 49 17ab31aa 2005-01-27 devnull 	}ARGEND
 50 be36ff68 2004-04-29 devnull 
 51 84b1cb73 2003-09-30 devnull 	if(initdraw(panic1, nil, "sam") < 0){
 52 941c9f36 2003-10-11 devnull 		fprint(2, "samterm: initdraw: %r\n");
 53 84b1cb73 2003-09-30 devnull 		threadexitsall("init");
 54 84b1cb73 2003-09-30 devnull 	}
 55 84b1cb73 2003-09-30 devnull 	t = getenv("tabstop");
 56 84b1cb73 2003-09-30 devnull 	if(t != nil)
 57 84b1cb73 2003-09-30 devnull 		maxtab = strtoul(t, nil, 0);
 58 84b1cb73 2003-09-30 devnull 	draw(screen, screen->clipr, display->white, nil, ZP);
 59 84b1cb73 2003-09-30 devnull }
 60 84b1cb73 2003-09-30 devnull 
 61 84b1cb73 2003-09-30 devnull int
 62 84b1cb73 2003-09-30 devnull screensize(int *w, int *h)
 63 84b1cb73 2003-09-30 devnull {
 64 84b1cb73 2003-09-30 devnull 	int fd, n;
 65 84b1cb73 2003-09-30 devnull 	char buf[5*12+1];
 66 84b1cb73 2003-09-30 devnull 
 67 84b1cb73 2003-09-30 devnull 	fd = open("/dev/screen", OREAD);
 68 84b1cb73 2003-09-30 devnull 	if(fd < 0)
 69 84b1cb73 2003-09-30 devnull 		return 0;
 70 84b1cb73 2003-09-30 devnull 	n = read(fd, buf, sizeof(buf)-1);
 71 84b1cb73 2003-09-30 devnull 	close(fd);
 72 84b1cb73 2003-09-30 devnull 	if (n != sizeof(buf)-1)
 73 84b1cb73 2003-09-30 devnull 		return 0;
 74 84b1cb73 2003-09-30 devnull 	buf[n] = 0;
 75 84b1cb73 2003-09-30 devnull 	if (h) {
 76 84b1cb73 2003-09-30 devnull 		*h = atoi(buf+4*12)-atoi(buf+2*12);
 77 84b1cb73 2003-09-30 devnull 		if (*h < 0)
 78 84b1cb73 2003-09-30 devnull 			return 0;
 79 84b1cb73 2003-09-30 devnull 	}
 80 84b1cb73 2003-09-30 devnull 	if (w) {
 81 84b1cb73 2003-09-30 devnull 		*w = atoi(buf+3*12)-atoi(buf+1*12);
 82 84b1cb73 2003-09-30 devnull 		if (*w < 0)
 83 84b1cb73 2003-09-30 devnull 			return 0;
 84 84b1cb73 2003-09-30 devnull 	}
 85 84b1cb73 2003-09-30 devnull 	return 1;
 86 84b1cb73 2003-09-30 devnull }
 87 84b1cb73 2003-09-30 devnull 
 88 84b1cb73 2003-09-30 devnull int
 89 84b1cb73 2003-09-30 devnull snarfswap(char *fromsam, int nc, char **tosam)
 90 84b1cb73 2003-09-30 devnull {
 91 941c9f36 2003-10-11 devnull 	char *s;
 92 84b1cb73 2003-09-30 devnull 
 93 941c9f36 2003-10-11 devnull 	s = getsnarf();
 94 941c9f36 2003-10-11 devnull 	putsnarf(fromsam);
 95 941c9f36 2003-10-11 devnull 	*tosam = s;
 96 941c9f36 2003-10-11 devnull 	return s ? strlen(s) : 0;
 97 84b1cb73 2003-09-30 devnull }
 98 84b1cb73 2003-09-30 devnull 
 99 84b1cb73 2003-09-30 devnull void
100 84b1cb73 2003-09-30 devnull dumperrmsg(int count, int type, int count0, int c)
101 84b1cb73 2003-09-30 devnull {
102 84b1cb73 2003-09-30 devnull 	fprint(2, "samterm: host mesg: count %d %ux %ux %ux %s...ignored\n",
103 84b1cb73 2003-09-30 devnull 		count, type, count0, c, rcvstring());
104 84b1cb73 2003-09-30 devnull }
105 84b1cb73 2003-09-30 devnull 
106 84b1cb73 2003-09-30 devnull void
107 84b1cb73 2003-09-30 devnull removeextern(void)
108 84b1cb73 2003-09-30 devnull {
109 84b1cb73 2003-09-30 devnull 	remove(exname);
110 84b1cb73 2003-09-30 devnull }
111 84b1cb73 2003-09-30 devnull 
112 84b1cb73 2003-09-30 devnull Readbuf	hostbuf[2];
113 84b1cb73 2003-09-30 devnull Readbuf	plumbbuf[2];
114 84b1cb73 2003-09-30 devnull 
115 84b1cb73 2003-09-30 devnull void
116 84b1cb73 2003-09-30 devnull extproc(void *argv)
117 84b1cb73 2003-09-30 devnull {
118 84b1cb73 2003-09-30 devnull 	Channel *c;
119 941c9f36 2003-10-11 devnull 	int i, n, which, fd;
120 84b1cb73 2003-09-30 devnull 	void **arg;
121 84b1cb73 2003-09-30 devnull 
122 84b1cb73 2003-09-30 devnull 	arg = argv;
123 84b1cb73 2003-09-30 devnull 	c = arg[0];
124 941c9f36 2003-10-11 devnull 	fd = (int)arg[1];
125 84b1cb73 2003-09-30 devnull 
126 84b1cb73 2003-09-30 devnull 	i = 0;
127 84b1cb73 2003-09-30 devnull 	for(;;){
128 941c9f36 2003-10-11 devnull 		i = 1-i;	/* toggle */
129 93f2ae0d 2004-12-27 devnull 		n = read(fd, plumbbuf[i].data, sizeof plumbbuf[i].data);
130 93f2ae0d 2004-12-27 devnull if(0) fprint(2, "ext %d\n", n);
131 84b1cb73 2003-09-30 devnull 		if(n <= 0){
132 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: extern read error: %r\n");
133 941c9f36 2003-10-11 devnull 			threadexits("extern");	/* not a fatal error */
134 84b1cb73 2003-09-30 devnull 		}
135 84b1cb73 2003-09-30 devnull 		plumbbuf[i].n = n;
136 84b1cb73 2003-09-30 devnull 		which = i;
137 84b1cb73 2003-09-30 devnull 		send(c, &which);
138 84b1cb73 2003-09-30 devnull 	}
139 84b1cb73 2003-09-30 devnull }
140 84b1cb73 2003-09-30 devnull 
141 84b1cb73 2003-09-30 devnull void
142 84b1cb73 2003-09-30 devnull extstart(void)
143 84b1cb73 2003-09-30 devnull {
144 941c9f36 2003-10-11 devnull 	char *user, *disp;
145 941c9f36 2003-10-11 devnull 	int fd, flags;
146 84b1cb73 2003-09-30 devnull 	static void *arg[2];
147 84b1cb73 2003-09-30 devnull 
148 941c9f36 2003-10-11 devnull 	user = getenv("USER");
149 941c9f36 2003-10-11 devnull 	if(user == nil)
150 84b1cb73 2003-09-30 devnull 		return;
151 941c9f36 2003-10-11 devnull 	disp = getenv("DISPLAY");
152 941c9f36 2003-10-11 devnull 	if(disp)
153 941c9f36 2003-10-11 devnull 		exname = smprint("/tmp/.sam.%s.%s", user, disp);
154 941c9f36 2003-10-11 devnull 	else
155 941c9f36 2003-10-11 devnull 		exname = smprint("/tmp/.sam.%s", user);
156 941c9f36 2003-10-11 devnull 	if(exname == nil){
157 941c9f36 2003-10-11 devnull 		fprint(2, "not posting for B: out of memory\n");
158 84b1cb73 2003-09-30 devnull 		return;
159 84b1cb73 2003-09-30 devnull 	}
160 941c9f36 2003-10-11 devnull 
161 941c9f36 2003-10-11 devnull 	if(mkfifo(exname, 0600) < 0){
162 941c9f36 2003-10-11 devnull 		struct stat st;
163 941c9f36 2003-10-11 devnull 		if(errno != EEXIST || stat(exname, &st) < 0)
164 941c9f36 2003-10-11 devnull 			return;
165 941c9f36 2003-10-11 devnull 		if(!S_ISFIFO(st.st_mode)){
166 941c9f36 2003-10-11 devnull 			removeextern();
167 941c9f36 2003-10-11 devnull 			if(mkfifo(exname, 0600) < 0)
168 941c9f36 2003-10-11 devnull 				return;
169 941c9f36 2003-10-11 devnull 		}
170 941c9f36 2003-10-11 devnull 	}
171 941c9f36 2003-10-11 devnull 
172 a19ff5b2 2005-01-07 devnull 	fd = open(exname, OREAD|ONONBLOCK);
173 941c9f36 2003-10-11 devnull 	if(fd == -1){
174 941c9f36 2003-10-11 devnull 		removeextern();
175 941c9f36 2003-10-11 devnull 		return;
176 941c9f36 2003-10-11 devnull 	}
177 941c9f36 2003-10-11 devnull 
178 84b1cb73 2003-09-30 devnull 	/*
179 941c9f36 2003-10-11 devnull 	 * Turn off no-delay and provide ourselves as a lingering
180 941c9f36 2003-10-11 devnull 	 * writer so as not to get end of file on read.
181 84b1cb73 2003-09-30 devnull 	 */
182 941c9f36 2003-10-11 devnull 	flags = fcntl(fd, F_GETFL, 0);
183 941c9f36 2003-10-11 devnull 	if(flags<0 || fcntl(fd, F_SETFL, flags&~O_NONBLOCK)<0
184 941c9f36 2003-10-11 devnull 	||open(exname, OWRITE) < 0){
185 941c9f36 2003-10-11 devnull 		close(fd);
186 941c9f36 2003-10-11 devnull 		removeextern();
187 941c9f36 2003-10-11 devnull 		return;
188 941c9f36 2003-10-11 devnull 	}
189 941c9f36 2003-10-11 devnull 
190 84b1cb73 2003-09-30 devnull 	plumbc = chancreate(sizeof(int), 0);
191 93f2ae0d 2004-12-27 devnull 	chansetname(plumbc, "plumbc");
192 84b1cb73 2003-09-30 devnull 	arg[0] = plumbc;
193 941c9f36 2003-10-11 devnull 	arg[1] = (void*)fd;
194 93f2ae0d 2004-12-27 devnull 	proccreate(extproc, arg, STACK);
195 84b1cb73 2003-09-30 devnull 	atexit(removeextern);
196 84b1cb73 2003-09-30 devnull }
197 84b1cb73 2003-09-30 devnull 
198 84b1cb73 2003-09-30 devnull int
199 af78a4cd 2004-03-02 devnull plumbformat(Plumbmsg *m, int i)
200 84b1cb73 2003-09-30 devnull {
201 84b1cb73 2003-09-30 devnull 	char *addr, *data, *act;
202 84b1cb73 2003-09-30 devnull 	int n;
203 84b1cb73 2003-09-30 devnull 
204 84b1cb73 2003-09-30 devnull 	data = (char*)plumbbuf[i].data;
205 84b1cb73 2003-09-30 devnull 	n = m->ndata;
206 af78a4cd 2004-03-02 devnull 	if(n == 0 || 2+n+2 >= READBUFSIZE){
207 84b1cb73 2003-09-30 devnull 		plumbfree(m);
208 84b1cb73 2003-09-30 devnull 		return 0;
209 84b1cb73 2003-09-30 devnull 	}
210 84b1cb73 2003-09-30 devnull 	act = plumblookup(m->attr, "action");
211 84b1cb73 2003-09-30 devnull 	if(act!=nil && strcmp(act, "showfile")!=0){
212 84b1cb73 2003-09-30 devnull 		/* can't handle other cases yet */
213 84b1cb73 2003-09-30 devnull 		plumbfree(m);
214 84b1cb73 2003-09-30 devnull 		return 0;
215 84b1cb73 2003-09-30 devnull 	}
216 84b1cb73 2003-09-30 devnull 	addr = plumblookup(m->attr, "addr");
217 84b1cb73 2003-09-30 devnull 	if(addr){
218 84b1cb73 2003-09-30 devnull 		if(addr[0] == '\0')
219 84b1cb73 2003-09-30 devnull 			addr = nil;
220 84b1cb73 2003-09-30 devnull 		else
221 84b1cb73 2003-09-30 devnull 			addr = strdup(addr);	/* copy to safe storage; we'll overwrite data */
222 84b1cb73 2003-09-30 devnull 	}
223 84b1cb73 2003-09-30 devnull 	memmove(data, "B ", 2);	/* we know there's enough room for this */
224 84b1cb73 2003-09-30 devnull 	memmove(data+2, m->data, n);
225 84b1cb73 2003-09-30 devnull 	n += 2;
226 84b1cb73 2003-09-30 devnull 	if(data[n-1] != '\n')
227 84b1cb73 2003-09-30 devnull 		data[n++] = '\n';
228 84b1cb73 2003-09-30 devnull 	if(addr != nil){
229 84b1cb73 2003-09-30 devnull 		if(n+strlen(addr)+1+1 <= READBUFSIZE)
230 84b1cb73 2003-09-30 devnull 			n += sprint(data+n, "%s\n", addr);
231 84b1cb73 2003-09-30 devnull 		free(addr);
232 84b1cb73 2003-09-30 devnull 	}
233 84b1cb73 2003-09-30 devnull 	plumbbuf[i].n = n;
234 84b1cb73 2003-09-30 devnull 	plumbfree(m);
235 84b1cb73 2003-09-30 devnull 	return 1;
236 84b1cb73 2003-09-30 devnull }
237 84b1cb73 2003-09-30 devnull 
238 84b1cb73 2003-09-30 devnull void
239 2277c5d7 2004-03-21 devnull plumbproc(void *arg)
240 84b1cb73 2003-09-30 devnull {
241 d4045724 2005-01-04 devnull 	CFid *fid;
242 2277c5d7 2004-03-21 devnull 	int i;
243 af78a4cd 2004-03-02 devnull 	Plumbmsg *m;
244 84b1cb73 2003-09-30 devnull 
245 2277c5d7 2004-03-21 devnull 	fid = arg;
246 2277c5d7 2004-03-21 devnull 	i = 0;
247 84b1cb73 2003-09-30 devnull 	for(;;){
248 2277c5d7 2004-03-21 devnull 		m = plumbrecvfid(fid);
249 af78a4cd 2004-03-02 devnull 		if(m == nil){
250 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: plumb read error: %r\n");
251 84b1cb73 2003-09-30 devnull 			threadexits("plumb");	/* not a fatal error */
252 84b1cb73 2003-09-30 devnull 		}
253 af78a4cd 2004-03-02 devnull 		if(plumbformat(m, i)){
254 2277c5d7 2004-03-21 devnull 			send(plumbc, &i);
255 af78a4cd 2004-03-02 devnull 			i = 1-i;	/* toggle */
256 84b1cb73 2003-09-30 devnull 		}
257 84b1cb73 2003-09-30 devnull 	}
258 84b1cb73 2003-09-30 devnull }
259 84b1cb73 2003-09-30 devnull 
260 84b1cb73 2003-09-30 devnull int
261 84b1cb73 2003-09-30 devnull plumbstart(void)
262 84b1cb73 2003-09-30 devnull {
263 d4045724 2005-01-04 devnull 	CFid *fid;
264 84b1cb73 2003-09-30 devnull 
265 84b1cb73 2003-09-30 devnull 	plumbfd = plumbopen("send", OWRITE|OCEXEC);	/* not open is ok */
266 2277c5d7 2004-03-21 devnull 	fid = plumbopenfid("edit", OREAD|OCEXEC);
267 2277c5d7 2004-03-21 devnull 	if(fid == nil)
268 84b1cb73 2003-09-30 devnull 		return -1;
269 84b1cb73 2003-09-30 devnull 	plumbc = chancreate(sizeof(int), 0);
270 93f2ae0d 2004-12-27 devnull 	chansetname(plumbc, "plumbc");
271 84b1cb73 2003-09-30 devnull 	if(plumbc == nil){
272 2277c5d7 2004-03-21 devnull 		fsclose(fid);
273 84b1cb73 2003-09-30 devnull 		return -1;
274 84b1cb73 2003-09-30 devnull 	}
275 2277c5d7 2004-03-21 devnull 	threadcreate(plumbproc, fid, STACK);
276 84b1cb73 2003-09-30 devnull 	return 1;
277 84b1cb73 2003-09-30 devnull }
278 84b1cb73 2003-09-30 devnull 
279 84b1cb73 2003-09-30 devnull void
280 84b1cb73 2003-09-30 devnull hostproc(void *arg)
281 84b1cb73 2003-09-30 devnull {
282 84b1cb73 2003-09-30 devnull 	Channel *c;
283 84b1cb73 2003-09-30 devnull 	int i, n, which;
284 84b1cb73 2003-09-30 devnull 
285 84b1cb73 2003-09-30 devnull 	c = arg;
286 84b1cb73 2003-09-30 devnull 
287 84b1cb73 2003-09-30 devnull 	i = 0;
288 84b1cb73 2003-09-30 devnull 	for(;;){
289 84b1cb73 2003-09-30 devnull 		i = 1-i;	/* toggle */
290 93f2ae0d 2004-12-27 devnull 		n = read(hostfd[0], hostbuf[i].data, sizeof hostbuf[i].data);
291 93f2ae0d 2004-12-27 devnull if(0) fprint(2, "hostproc %d\n", n);
292 84b1cb73 2003-09-30 devnull 		if(n <= 0){
293 f0264abf 2005-01-20 devnull 			if(n == 0){
294 f0264abf 2005-01-20 devnull 				if(exiting)
295 f0264abf 2005-01-20 devnull 					threadexits(nil);
296 f0264abf 2005-01-20 devnull 				werrstr("unexpected eof");
297 f0264abf 2005-01-20 devnull 			}
298 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: host read error: %r\n");
299 84b1cb73 2003-09-30 devnull 			threadexitsall("host");
300 84b1cb73 2003-09-30 devnull 		}
301 84b1cb73 2003-09-30 devnull 		hostbuf[i].n = n;
302 84b1cb73 2003-09-30 devnull 		which = i;
303 93f2ae0d 2004-12-27 devnull if(0) fprint(2, "hostproc send %d\n", which);
304 84b1cb73 2003-09-30 devnull 		send(c, &which);
305 84b1cb73 2003-09-30 devnull 	}
306 84b1cb73 2003-09-30 devnull }
307 84b1cb73 2003-09-30 devnull 
308 84b1cb73 2003-09-30 devnull void
309 84b1cb73 2003-09-30 devnull hoststart(void)
310 84b1cb73 2003-09-30 devnull {
311 84b1cb73 2003-09-30 devnull 	hostc = chancreate(sizeof(int), 0);
312 93f2ae0d 2004-12-27 devnull 	chansetname(hostc, "hostc");
313 93f2ae0d 2004-12-27 devnull 	proccreate(hostproc, hostc, STACK);
314 84b1cb73 2003-09-30 devnull }