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