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 2277c5d7 2004-03-21 devnull #include <fs.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 84b1cb73 2003-09-30 devnull getscreen(int argc, char **argv)
 30 84b1cb73 2003-09-30 devnull {
 31 84b1cb73 2003-09-30 devnull 	char *t;
 32 84b1cb73 2003-09-30 devnull 
 33 84b1cb73 2003-09-30 devnull 	USED(argc);
 34 84b1cb73 2003-09-30 devnull 	USED(argv);
 35 84b1cb73 2003-09-30 devnull 	if(initdraw(panic1, nil, "sam") < 0){
 36 941c9f36 2003-10-11 devnull 		fprint(2, "samterm: initdraw: %r\n");
 37 84b1cb73 2003-09-30 devnull 		threadexitsall("init");
 38 84b1cb73 2003-09-30 devnull 	}
 39 84b1cb73 2003-09-30 devnull 	t = getenv("tabstop");
 40 84b1cb73 2003-09-30 devnull 	if(t != nil)
 41 84b1cb73 2003-09-30 devnull 		maxtab = strtoul(t, nil, 0);
 42 84b1cb73 2003-09-30 devnull 	draw(screen, screen->clipr, display->white, nil, ZP);
 43 84b1cb73 2003-09-30 devnull }
 44 84b1cb73 2003-09-30 devnull 
 45 84b1cb73 2003-09-30 devnull int
 46 84b1cb73 2003-09-30 devnull screensize(int *w, int *h)
 47 84b1cb73 2003-09-30 devnull {
 48 84b1cb73 2003-09-30 devnull 	int fd, n;
 49 84b1cb73 2003-09-30 devnull 	char buf[5*12+1];
 50 84b1cb73 2003-09-30 devnull 
 51 84b1cb73 2003-09-30 devnull 	fd = open("/dev/screen", OREAD);
 52 84b1cb73 2003-09-30 devnull 	if(fd < 0)
 53 84b1cb73 2003-09-30 devnull 		return 0;
 54 84b1cb73 2003-09-30 devnull 	n = read(fd, buf, sizeof(buf)-1);
 55 84b1cb73 2003-09-30 devnull 	close(fd);
 56 84b1cb73 2003-09-30 devnull 	if (n != sizeof(buf)-1)
 57 84b1cb73 2003-09-30 devnull 		return 0;
 58 84b1cb73 2003-09-30 devnull 	buf[n] = 0;
 59 84b1cb73 2003-09-30 devnull 	if (h) {
 60 84b1cb73 2003-09-30 devnull 		*h = atoi(buf+4*12)-atoi(buf+2*12);
 61 84b1cb73 2003-09-30 devnull 		if (*h < 0)
 62 84b1cb73 2003-09-30 devnull 			return 0;
 63 84b1cb73 2003-09-30 devnull 	}
 64 84b1cb73 2003-09-30 devnull 	if (w) {
 65 84b1cb73 2003-09-30 devnull 		*w = atoi(buf+3*12)-atoi(buf+1*12);
 66 84b1cb73 2003-09-30 devnull 		if (*w < 0)
 67 84b1cb73 2003-09-30 devnull 			return 0;
 68 84b1cb73 2003-09-30 devnull 	}
 69 84b1cb73 2003-09-30 devnull 	return 1;
 70 84b1cb73 2003-09-30 devnull }
 71 84b1cb73 2003-09-30 devnull 
 72 84b1cb73 2003-09-30 devnull int
 73 84b1cb73 2003-09-30 devnull snarfswap(char *fromsam, int nc, char **tosam)
 74 84b1cb73 2003-09-30 devnull {
 75 941c9f36 2003-10-11 devnull 	char *s;
 76 84b1cb73 2003-09-30 devnull 
 77 941c9f36 2003-10-11 devnull 	s = getsnarf();
 78 941c9f36 2003-10-11 devnull 	putsnarf(fromsam);
 79 941c9f36 2003-10-11 devnull 	*tosam = s;
 80 941c9f36 2003-10-11 devnull 	return s ? strlen(s) : 0;
 81 84b1cb73 2003-09-30 devnull }
 82 84b1cb73 2003-09-30 devnull 
 83 84b1cb73 2003-09-30 devnull void
 84 84b1cb73 2003-09-30 devnull dumperrmsg(int count, int type, int count0, int c)
 85 84b1cb73 2003-09-30 devnull {
 86 84b1cb73 2003-09-30 devnull 	fprint(2, "samterm: host mesg: count %d %ux %ux %ux %s...ignored\n",
 87 84b1cb73 2003-09-30 devnull 		count, type, count0, c, rcvstring());
 88 84b1cb73 2003-09-30 devnull }
 89 84b1cb73 2003-09-30 devnull 
 90 84b1cb73 2003-09-30 devnull void
 91 84b1cb73 2003-09-30 devnull removeextern(void)
 92 84b1cb73 2003-09-30 devnull {
 93 84b1cb73 2003-09-30 devnull 	remove(exname);
 94 84b1cb73 2003-09-30 devnull }
 95 84b1cb73 2003-09-30 devnull 
 96 84b1cb73 2003-09-30 devnull Readbuf	hostbuf[2];
 97 84b1cb73 2003-09-30 devnull Readbuf	plumbbuf[2];
 98 84b1cb73 2003-09-30 devnull 
 99 84b1cb73 2003-09-30 devnull void
100 84b1cb73 2003-09-30 devnull extproc(void *argv)
101 84b1cb73 2003-09-30 devnull {
102 84b1cb73 2003-09-30 devnull 	Channel *c;
103 941c9f36 2003-10-11 devnull 	int i, n, which, fd;
104 84b1cb73 2003-09-30 devnull 	void **arg;
105 84b1cb73 2003-09-30 devnull 
106 84b1cb73 2003-09-30 devnull 	arg = argv;
107 84b1cb73 2003-09-30 devnull 	c = arg[0];
108 941c9f36 2003-10-11 devnull 	fd = (int)arg[1];
109 84b1cb73 2003-09-30 devnull 
110 5a8e63b2 2004-02-29 devnull 	threadfdnoblock(fd);
111 84b1cb73 2003-09-30 devnull 	i = 0;
112 84b1cb73 2003-09-30 devnull 	for(;;){
113 941c9f36 2003-10-11 devnull 		i = 1-i;	/* toggle */
114 5a8e63b2 2004-02-29 devnull 		n = threadread(fd, plumbbuf[i].data, sizeof plumbbuf[i].data);
115 84b1cb73 2003-09-30 devnull 		if(n <= 0){
116 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: extern read error: %r\n");
117 941c9f36 2003-10-11 devnull 			threadexits("extern");	/* not a fatal error */
118 84b1cb73 2003-09-30 devnull 		}
119 84b1cb73 2003-09-30 devnull 		plumbbuf[i].n = n;
120 84b1cb73 2003-09-30 devnull 		which = i;
121 84b1cb73 2003-09-30 devnull 		send(c, &which);
122 84b1cb73 2003-09-30 devnull 	}
123 84b1cb73 2003-09-30 devnull }
124 84b1cb73 2003-09-30 devnull 
125 84b1cb73 2003-09-30 devnull void
126 84b1cb73 2003-09-30 devnull extstart(void)
127 84b1cb73 2003-09-30 devnull {
128 941c9f36 2003-10-11 devnull 	char *user, *disp;
129 941c9f36 2003-10-11 devnull 	int fd, flags;
130 84b1cb73 2003-09-30 devnull 	static void *arg[2];
131 84b1cb73 2003-09-30 devnull 
132 941c9f36 2003-10-11 devnull 	user = getenv("USER");
133 941c9f36 2003-10-11 devnull 	if(user == nil)
134 84b1cb73 2003-09-30 devnull 		return;
135 941c9f36 2003-10-11 devnull 	disp = getenv("DISPLAY");
136 941c9f36 2003-10-11 devnull 	if(disp)
137 941c9f36 2003-10-11 devnull 		exname = smprint("/tmp/.sam.%s.%s", user, disp);
138 941c9f36 2003-10-11 devnull 	else
139 941c9f36 2003-10-11 devnull 		exname = smprint("/tmp/.sam.%s", user);
140 941c9f36 2003-10-11 devnull 	if(exname == nil){
141 941c9f36 2003-10-11 devnull 		fprint(2, "not posting for B: out of memory\n");
142 84b1cb73 2003-09-30 devnull 		return;
143 84b1cb73 2003-09-30 devnull 	}
144 941c9f36 2003-10-11 devnull 
145 941c9f36 2003-10-11 devnull 	if(mkfifo(exname, 0600) < 0){
146 941c9f36 2003-10-11 devnull 		struct stat st;
147 941c9f36 2003-10-11 devnull 		if(errno != EEXIST || stat(exname, &st) < 0)
148 941c9f36 2003-10-11 devnull 			return;
149 941c9f36 2003-10-11 devnull 		if(!S_ISFIFO(st.st_mode)){
150 941c9f36 2003-10-11 devnull 			removeextern();
151 941c9f36 2003-10-11 devnull 			if(mkfifo(exname, 0600) < 0)
152 941c9f36 2003-10-11 devnull 				return;
153 941c9f36 2003-10-11 devnull 		}
154 941c9f36 2003-10-11 devnull 	}
155 941c9f36 2003-10-11 devnull 
156 941c9f36 2003-10-11 devnull 	fd = open(exname, OREAD|O_NONBLOCK);
157 941c9f36 2003-10-11 devnull 	if(fd == -1){
158 941c9f36 2003-10-11 devnull 		removeextern();
159 941c9f36 2003-10-11 devnull 		return;
160 941c9f36 2003-10-11 devnull 	}
161 941c9f36 2003-10-11 devnull 
162 84b1cb73 2003-09-30 devnull 	/*
163 941c9f36 2003-10-11 devnull 	 * Turn off no-delay and provide ourselves as a lingering
164 941c9f36 2003-10-11 devnull 	 * writer so as not to get end of file on read.
165 84b1cb73 2003-09-30 devnull 	 */
166 941c9f36 2003-10-11 devnull 	flags = fcntl(fd, F_GETFL, 0);
167 941c9f36 2003-10-11 devnull 	if(flags<0 || fcntl(fd, F_SETFL, flags&~O_NONBLOCK)<0
168 941c9f36 2003-10-11 devnull 	||open(exname, OWRITE) < 0){
169 941c9f36 2003-10-11 devnull 		close(fd);
170 941c9f36 2003-10-11 devnull 		removeextern();
171 941c9f36 2003-10-11 devnull 		return;
172 941c9f36 2003-10-11 devnull 	}
173 941c9f36 2003-10-11 devnull 
174 84b1cb73 2003-09-30 devnull 	plumbc = chancreate(sizeof(int), 0);
175 84b1cb73 2003-09-30 devnull 	arg[0] = plumbc;
176 941c9f36 2003-10-11 devnull 	arg[1] = (void*)fd;
177 5a8e63b2 2004-02-29 devnull 	threadcreate(extproc, arg, STACK);
178 84b1cb73 2003-09-30 devnull 	atexit(removeextern);
179 84b1cb73 2003-09-30 devnull }
180 84b1cb73 2003-09-30 devnull 
181 84b1cb73 2003-09-30 devnull int
182 af78a4cd 2004-03-02 devnull plumbformat(Plumbmsg *m, int i)
183 84b1cb73 2003-09-30 devnull {
184 84b1cb73 2003-09-30 devnull 	char *addr, *data, *act;
185 84b1cb73 2003-09-30 devnull 	int n;
186 84b1cb73 2003-09-30 devnull 
187 84b1cb73 2003-09-30 devnull 	data = (char*)plumbbuf[i].data;
188 84b1cb73 2003-09-30 devnull 	n = m->ndata;
189 af78a4cd 2004-03-02 devnull 	if(n == 0 || 2+n+2 >= READBUFSIZE){
190 84b1cb73 2003-09-30 devnull 		plumbfree(m);
191 84b1cb73 2003-09-30 devnull 		return 0;
192 84b1cb73 2003-09-30 devnull 	}
193 84b1cb73 2003-09-30 devnull 	act = plumblookup(m->attr, "action");
194 84b1cb73 2003-09-30 devnull 	if(act!=nil && strcmp(act, "showfile")!=0){
195 84b1cb73 2003-09-30 devnull 		/* can't handle other cases yet */
196 84b1cb73 2003-09-30 devnull 		plumbfree(m);
197 84b1cb73 2003-09-30 devnull 		return 0;
198 84b1cb73 2003-09-30 devnull 	}
199 84b1cb73 2003-09-30 devnull 	addr = plumblookup(m->attr, "addr");
200 84b1cb73 2003-09-30 devnull 	if(addr){
201 84b1cb73 2003-09-30 devnull 		if(addr[0] == '\0')
202 84b1cb73 2003-09-30 devnull 			addr = nil;
203 84b1cb73 2003-09-30 devnull 		else
204 84b1cb73 2003-09-30 devnull 			addr = strdup(addr);	/* copy to safe storage; we'll overwrite data */
205 84b1cb73 2003-09-30 devnull 	}
206 84b1cb73 2003-09-30 devnull 	memmove(data, "B ", 2);	/* we know there's enough room for this */
207 84b1cb73 2003-09-30 devnull 	memmove(data+2, m->data, n);
208 84b1cb73 2003-09-30 devnull 	n += 2;
209 84b1cb73 2003-09-30 devnull 	if(data[n-1] != '\n')
210 84b1cb73 2003-09-30 devnull 		data[n++] = '\n';
211 84b1cb73 2003-09-30 devnull 	if(addr != nil){
212 84b1cb73 2003-09-30 devnull 		if(n+strlen(addr)+1+1 <= READBUFSIZE)
213 84b1cb73 2003-09-30 devnull 			n += sprint(data+n, "%s\n", addr);
214 84b1cb73 2003-09-30 devnull 		free(addr);
215 84b1cb73 2003-09-30 devnull 	}
216 84b1cb73 2003-09-30 devnull 	plumbbuf[i].n = n;
217 84b1cb73 2003-09-30 devnull 	plumbfree(m);
218 84b1cb73 2003-09-30 devnull 	return 1;
219 84b1cb73 2003-09-30 devnull }
220 84b1cb73 2003-09-30 devnull 
221 84b1cb73 2003-09-30 devnull void
222 2277c5d7 2004-03-21 devnull plumbproc(void *arg)
223 84b1cb73 2003-09-30 devnull {
224 2277c5d7 2004-03-21 devnull 	Fid *fid;
225 2277c5d7 2004-03-21 devnull 	int i;
226 af78a4cd 2004-03-02 devnull 	Plumbmsg *m;
227 84b1cb73 2003-09-30 devnull 
228 2277c5d7 2004-03-21 devnull 	fid = arg;
229 2277c5d7 2004-03-21 devnull 	i = 0;
230 84b1cb73 2003-09-30 devnull 	for(;;){
231 2277c5d7 2004-03-21 devnull 		m = plumbrecvfid(fid);
232 af78a4cd 2004-03-02 devnull 		if(m == nil){
233 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: plumb read error: %r\n");
234 84b1cb73 2003-09-30 devnull 			threadexits("plumb");	/* not a fatal error */
235 84b1cb73 2003-09-30 devnull 		}
236 af78a4cd 2004-03-02 devnull 		if(plumbformat(m, i)){
237 2277c5d7 2004-03-21 devnull 			send(plumbc, &i);
238 af78a4cd 2004-03-02 devnull 			i = 1-i;	/* toggle */
239 84b1cb73 2003-09-30 devnull 		}
240 84b1cb73 2003-09-30 devnull 	}
241 84b1cb73 2003-09-30 devnull }
242 84b1cb73 2003-09-30 devnull 
243 84b1cb73 2003-09-30 devnull int
244 84b1cb73 2003-09-30 devnull plumbstart(void)
245 84b1cb73 2003-09-30 devnull {
246 2277c5d7 2004-03-21 devnull 	Fid *fid;
247 84b1cb73 2003-09-30 devnull 
248 84b1cb73 2003-09-30 devnull 	plumbfd = plumbopen("send", OWRITE|OCEXEC);	/* not open is ok */
249 2277c5d7 2004-03-21 devnull 	fid = plumbopenfid("edit", OREAD|OCEXEC);
250 2277c5d7 2004-03-21 devnull 	if(fid == nil)
251 84b1cb73 2003-09-30 devnull 		return -1;
252 84b1cb73 2003-09-30 devnull 	plumbc = chancreate(sizeof(int), 0);
253 84b1cb73 2003-09-30 devnull 	if(plumbc == nil){
254 2277c5d7 2004-03-21 devnull 		fsclose(fid);
255 84b1cb73 2003-09-30 devnull 		return -1;
256 84b1cb73 2003-09-30 devnull 	}
257 2277c5d7 2004-03-21 devnull 	threadcreate(plumbproc, fid, STACK);
258 84b1cb73 2003-09-30 devnull 	return 1;
259 84b1cb73 2003-09-30 devnull }
260 84b1cb73 2003-09-30 devnull 
261 84b1cb73 2003-09-30 devnull void
262 84b1cb73 2003-09-30 devnull hostproc(void *arg)
263 84b1cb73 2003-09-30 devnull {
264 84b1cb73 2003-09-30 devnull 	Channel *c;
265 84b1cb73 2003-09-30 devnull 	int i, n, which;
266 84b1cb73 2003-09-30 devnull 
267 84b1cb73 2003-09-30 devnull 	c = arg;
268 84b1cb73 2003-09-30 devnull 
269 84b1cb73 2003-09-30 devnull 	i = 0;
270 5a8e63b2 2004-02-29 devnull 	threadfdnoblock(hostfd[0]);
271 84b1cb73 2003-09-30 devnull 	for(;;){
272 84b1cb73 2003-09-30 devnull 		i = 1-i;	/* toggle */
273 5a8e63b2 2004-02-29 devnull 		n = threadread(hostfd[0], hostbuf[i].data, sizeof hostbuf[i].data);
274 84b1cb73 2003-09-30 devnull 		if(n <= 0){
275 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: host read error: %r\n");
276 84b1cb73 2003-09-30 devnull 			threadexitsall("host");
277 84b1cb73 2003-09-30 devnull 		}
278 84b1cb73 2003-09-30 devnull 		hostbuf[i].n = n;
279 84b1cb73 2003-09-30 devnull 		which = i;
280 84b1cb73 2003-09-30 devnull 		send(c, &which);
281 84b1cb73 2003-09-30 devnull 	}
282 84b1cb73 2003-09-30 devnull }
283 84b1cb73 2003-09-30 devnull 
284 84b1cb73 2003-09-30 devnull void
285 84b1cb73 2003-09-30 devnull hoststart(void)
286 84b1cb73 2003-09-30 devnull {
287 84b1cb73 2003-09-30 devnull 	hostc = chancreate(sizeof(int), 0);
288 5a8e63b2 2004-02-29 devnull 	threadcreate(hostproc, hostc, STACK);
289 84b1cb73 2003-09-30 devnull }