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 be36ff68 2004-04-29 devnull 	int i;
 32 84b1cb73 2003-09-30 devnull 	char *t;
 33 84b1cb73 2003-09-30 devnull 
 34 be36ff68 2004-04-29 devnull 	/* not exactly right */
 35 be36ff68 2004-04-29 devnull 	for(i=0; i<argc-1; i++){
 36 be36ff68 2004-04-29 devnull 		if(strcmp(argv[i], "-W") == 0)
 37 be36ff68 2004-04-29 devnull 			winsize = argv[i+1];
 38 be36ff68 2004-04-29 devnull 	}
 39 be36ff68 2004-04-29 devnull 
 40 84b1cb73 2003-09-30 devnull 	if(initdraw(panic1, nil, "sam") < 0){
 41 941c9f36 2003-10-11 devnull 		fprint(2, "samterm: initdraw: %r\n");
 42 84b1cb73 2003-09-30 devnull 		threadexitsall("init");
 43 84b1cb73 2003-09-30 devnull 	}
 44 84b1cb73 2003-09-30 devnull 	t = getenv("tabstop");
 45 84b1cb73 2003-09-30 devnull 	if(t != nil)
 46 84b1cb73 2003-09-30 devnull 		maxtab = strtoul(t, nil, 0);
 47 84b1cb73 2003-09-30 devnull 	draw(screen, screen->clipr, display->white, nil, ZP);
 48 84b1cb73 2003-09-30 devnull }
 49 84b1cb73 2003-09-30 devnull 
 50 84b1cb73 2003-09-30 devnull int
 51 84b1cb73 2003-09-30 devnull screensize(int *w, int *h)
 52 84b1cb73 2003-09-30 devnull {
 53 84b1cb73 2003-09-30 devnull 	int fd, n;
 54 84b1cb73 2003-09-30 devnull 	char buf[5*12+1];
 55 84b1cb73 2003-09-30 devnull 
 56 84b1cb73 2003-09-30 devnull 	fd = open("/dev/screen", OREAD);
 57 84b1cb73 2003-09-30 devnull 	if(fd < 0)
 58 84b1cb73 2003-09-30 devnull 		return 0;
 59 84b1cb73 2003-09-30 devnull 	n = read(fd, buf, sizeof(buf)-1);
 60 84b1cb73 2003-09-30 devnull 	close(fd);
 61 84b1cb73 2003-09-30 devnull 	if (n != sizeof(buf)-1)
 62 84b1cb73 2003-09-30 devnull 		return 0;
 63 84b1cb73 2003-09-30 devnull 	buf[n] = 0;
 64 84b1cb73 2003-09-30 devnull 	if (h) {
 65 84b1cb73 2003-09-30 devnull 		*h = atoi(buf+4*12)-atoi(buf+2*12);
 66 84b1cb73 2003-09-30 devnull 		if (*h < 0)
 67 84b1cb73 2003-09-30 devnull 			return 0;
 68 84b1cb73 2003-09-30 devnull 	}
 69 84b1cb73 2003-09-30 devnull 	if (w) {
 70 84b1cb73 2003-09-30 devnull 		*w = atoi(buf+3*12)-atoi(buf+1*12);
 71 84b1cb73 2003-09-30 devnull 		if (*w < 0)
 72 84b1cb73 2003-09-30 devnull 			return 0;
 73 84b1cb73 2003-09-30 devnull 	}
 74 84b1cb73 2003-09-30 devnull 	return 1;
 75 84b1cb73 2003-09-30 devnull }
 76 84b1cb73 2003-09-30 devnull 
 77 84b1cb73 2003-09-30 devnull int
 78 84b1cb73 2003-09-30 devnull snarfswap(char *fromsam, int nc, char **tosam)
 79 84b1cb73 2003-09-30 devnull {
 80 941c9f36 2003-10-11 devnull 	char *s;
 81 84b1cb73 2003-09-30 devnull 
 82 941c9f36 2003-10-11 devnull 	s = getsnarf();
 83 941c9f36 2003-10-11 devnull 	putsnarf(fromsam);
 84 941c9f36 2003-10-11 devnull 	*tosam = s;
 85 941c9f36 2003-10-11 devnull 	return s ? strlen(s) : 0;
 86 84b1cb73 2003-09-30 devnull }
 87 84b1cb73 2003-09-30 devnull 
 88 84b1cb73 2003-09-30 devnull void
 89 84b1cb73 2003-09-30 devnull dumperrmsg(int count, int type, int count0, int c)
 90 84b1cb73 2003-09-30 devnull {
 91 84b1cb73 2003-09-30 devnull 	fprint(2, "samterm: host mesg: count %d %ux %ux %ux %s...ignored\n",
 92 84b1cb73 2003-09-30 devnull 		count, type, count0, c, rcvstring());
 93 84b1cb73 2003-09-30 devnull }
 94 84b1cb73 2003-09-30 devnull 
 95 84b1cb73 2003-09-30 devnull void
 96 84b1cb73 2003-09-30 devnull removeextern(void)
 97 84b1cb73 2003-09-30 devnull {
 98 84b1cb73 2003-09-30 devnull 	remove(exname);
 99 84b1cb73 2003-09-30 devnull }
100 84b1cb73 2003-09-30 devnull 
101 84b1cb73 2003-09-30 devnull Readbuf	hostbuf[2];
102 84b1cb73 2003-09-30 devnull Readbuf	plumbbuf[2];
103 84b1cb73 2003-09-30 devnull 
104 84b1cb73 2003-09-30 devnull void
105 84b1cb73 2003-09-30 devnull extproc(void *argv)
106 84b1cb73 2003-09-30 devnull {
107 84b1cb73 2003-09-30 devnull 	Channel *c;
108 941c9f36 2003-10-11 devnull 	int i, n, which, fd;
109 84b1cb73 2003-09-30 devnull 	void **arg;
110 84b1cb73 2003-09-30 devnull 
111 84b1cb73 2003-09-30 devnull 	arg = argv;
112 84b1cb73 2003-09-30 devnull 	c = arg[0];
113 941c9f36 2003-10-11 devnull 	fd = (int)arg[1];
114 84b1cb73 2003-09-30 devnull 
115 5a8e63b2 2004-02-29 devnull 	threadfdnoblock(fd);
116 84b1cb73 2003-09-30 devnull 	i = 0;
117 84b1cb73 2003-09-30 devnull 	for(;;){
118 941c9f36 2003-10-11 devnull 		i = 1-i;	/* toggle */
119 5a8e63b2 2004-02-29 devnull 		n = threadread(fd, plumbbuf[i].data, sizeof plumbbuf[i].data);
120 84b1cb73 2003-09-30 devnull 		if(n <= 0){
121 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: extern read error: %r\n");
122 941c9f36 2003-10-11 devnull 			threadexits("extern");	/* not a fatal error */
123 84b1cb73 2003-09-30 devnull 		}
124 84b1cb73 2003-09-30 devnull 		plumbbuf[i].n = n;
125 84b1cb73 2003-09-30 devnull 		which = i;
126 84b1cb73 2003-09-30 devnull 		send(c, &which);
127 84b1cb73 2003-09-30 devnull 	}
128 84b1cb73 2003-09-30 devnull }
129 84b1cb73 2003-09-30 devnull 
130 84b1cb73 2003-09-30 devnull void
131 84b1cb73 2003-09-30 devnull extstart(void)
132 84b1cb73 2003-09-30 devnull {
133 941c9f36 2003-10-11 devnull 	char *user, *disp;
134 941c9f36 2003-10-11 devnull 	int fd, flags;
135 84b1cb73 2003-09-30 devnull 	static void *arg[2];
136 84b1cb73 2003-09-30 devnull 
137 941c9f36 2003-10-11 devnull 	user = getenv("USER");
138 941c9f36 2003-10-11 devnull 	if(user == nil)
139 84b1cb73 2003-09-30 devnull 		return;
140 941c9f36 2003-10-11 devnull 	disp = getenv("DISPLAY");
141 941c9f36 2003-10-11 devnull 	if(disp)
142 941c9f36 2003-10-11 devnull 		exname = smprint("/tmp/.sam.%s.%s", user, disp);
143 941c9f36 2003-10-11 devnull 	else
144 941c9f36 2003-10-11 devnull 		exname = smprint("/tmp/.sam.%s", user);
145 941c9f36 2003-10-11 devnull 	if(exname == nil){
146 941c9f36 2003-10-11 devnull 		fprint(2, "not posting for B: out of memory\n");
147 84b1cb73 2003-09-30 devnull 		return;
148 84b1cb73 2003-09-30 devnull 	}
149 941c9f36 2003-10-11 devnull 
150 941c9f36 2003-10-11 devnull 	if(mkfifo(exname, 0600) < 0){
151 941c9f36 2003-10-11 devnull 		struct stat st;
152 941c9f36 2003-10-11 devnull 		if(errno != EEXIST || stat(exname, &st) < 0)
153 941c9f36 2003-10-11 devnull 			return;
154 941c9f36 2003-10-11 devnull 		if(!S_ISFIFO(st.st_mode)){
155 941c9f36 2003-10-11 devnull 			removeextern();
156 941c9f36 2003-10-11 devnull 			if(mkfifo(exname, 0600) < 0)
157 941c9f36 2003-10-11 devnull 				return;
158 941c9f36 2003-10-11 devnull 		}
159 941c9f36 2003-10-11 devnull 	}
160 941c9f36 2003-10-11 devnull 
161 941c9f36 2003-10-11 devnull 	fd = open(exname, OREAD|O_NONBLOCK);
162 941c9f36 2003-10-11 devnull 	if(fd == -1){
163 941c9f36 2003-10-11 devnull 		removeextern();
164 941c9f36 2003-10-11 devnull 		return;
165 941c9f36 2003-10-11 devnull 	}
166 941c9f36 2003-10-11 devnull 
167 84b1cb73 2003-09-30 devnull 	/*
168 941c9f36 2003-10-11 devnull 	 * Turn off no-delay and provide ourselves as a lingering
169 941c9f36 2003-10-11 devnull 	 * writer so as not to get end of file on read.
170 84b1cb73 2003-09-30 devnull 	 */
171 941c9f36 2003-10-11 devnull 	flags = fcntl(fd, F_GETFL, 0);
172 941c9f36 2003-10-11 devnull 	if(flags<0 || fcntl(fd, F_SETFL, flags&~O_NONBLOCK)<0
173 941c9f36 2003-10-11 devnull 	||open(exname, OWRITE) < 0){
174 941c9f36 2003-10-11 devnull 		close(fd);
175 941c9f36 2003-10-11 devnull 		removeextern();
176 941c9f36 2003-10-11 devnull 		return;
177 941c9f36 2003-10-11 devnull 	}
178 941c9f36 2003-10-11 devnull 
179 84b1cb73 2003-09-30 devnull 	plumbc = chancreate(sizeof(int), 0);
180 84b1cb73 2003-09-30 devnull 	arg[0] = plumbc;
181 941c9f36 2003-10-11 devnull 	arg[1] = (void*)fd;
182 5a8e63b2 2004-02-29 devnull 	threadcreate(extproc, arg, STACK);
183 84b1cb73 2003-09-30 devnull 	atexit(removeextern);
184 84b1cb73 2003-09-30 devnull }
185 84b1cb73 2003-09-30 devnull 
186 84b1cb73 2003-09-30 devnull int
187 af78a4cd 2004-03-02 devnull plumbformat(Plumbmsg *m, int i)
188 84b1cb73 2003-09-30 devnull {
189 84b1cb73 2003-09-30 devnull 	char *addr, *data, *act;
190 84b1cb73 2003-09-30 devnull 	int n;
191 84b1cb73 2003-09-30 devnull 
192 84b1cb73 2003-09-30 devnull 	data = (char*)plumbbuf[i].data;
193 84b1cb73 2003-09-30 devnull 	n = m->ndata;
194 af78a4cd 2004-03-02 devnull 	if(n == 0 || 2+n+2 >= READBUFSIZE){
195 84b1cb73 2003-09-30 devnull 		plumbfree(m);
196 84b1cb73 2003-09-30 devnull 		return 0;
197 84b1cb73 2003-09-30 devnull 	}
198 84b1cb73 2003-09-30 devnull 	act = plumblookup(m->attr, "action");
199 84b1cb73 2003-09-30 devnull 	if(act!=nil && strcmp(act, "showfile")!=0){
200 84b1cb73 2003-09-30 devnull 		/* can't handle other cases yet */
201 84b1cb73 2003-09-30 devnull 		plumbfree(m);
202 84b1cb73 2003-09-30 devnull 		return 0;
203 84b1cb73 2003-09-30 devnull 	}
204 84b1cb73 2003-09-30 devnull 	addr = plumblookup(m->attr, "addr");
205 84b1cb73 2003-09-30 devnull 	if(addr){
206 84b1cb73 2003-09-30 devnull 		if(addr[0] == '\0')
207 84b1cb73 2003-09-30 devnull 			addr = nil;
208 84b1cb73 2003-09-30 devnull 		else
209 84b1cb73 2003-09-30 devnull 			addr = strdup(addr);	/* copy to safe storage; we'll overwrite data */
210 84b1cb73 2003-09-30 devnull 	}
211 84b1cb73 2003-09-30 devnull 	memmove(data, "B ", 2);	/* we know there's enough room for this */
212 84b1cb73 2003-09-30 devnull 	memmove(data+2, m->data, n);
213 84b1cb73 2003-09-30 devnull 	n += 2;
214 84b1cb73 2003-09-30 devnull 	if(data[n-1] != '\n')
215 84b1cb73 2003-09-30 devnull 		data[n++] = '\n';
216 84b1cb73 2003-09-30 devnull 	if(addr != nil){
217 84b1cb73 2003-09-30 devnull 		if(n+strlen(addr)+1+1 <= READBUFSIZE)
218 84b1cb73 2003-09-30 devnull 			n += sprint(data+n, "%s\n", addr);
219 84b1cb73 2003-09-30 devnull 		free(addr);
220 84b1cb73 2003-09-30 devnull 	}
221 84b1cb73 2003-09-30 devnull 	plumbbuf[i].n = n;
222 84b1cb73 2003-09-30 devnull 	plumbfree(m);
223 84b1cb73 2003-09-30 devnull 	return 1;
224 84b1cb73 2003-09-30 devnull }
225 84b1cb73 2003-09-30 devnull 
226 84b1cb73 2003-09-30 devnull void
227 2277c5d7 2004-03-21 devnull plumbproc(void *arg)
228 84b1cb73 2003-09-30 devnull {
229 2277c5d7 2004-03-21 devnull 	Fid *fid;
230 2277c5d7 2004-03-21 devnull 	int i;
231 af78a4cd 2004-03-02 devnull 	Plumbmsg *m;
232 84b1cb73 2003-09-30 devnull 
233 2277c5d7 2004-03-21 devnull 	fid = arg;
234 2277c5d7 2004-03-21 devnull 	i = 0;
235 84b1cb73 2003-09-30 devnull 	for(;;){
236 2277c5d7 2004-03-21 devnull 		m = plumbrecvfid(fid);
237 af78a4cd 2004-03-02 devnull 		if(m == nil){
238 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: plumb read error: %r\n");
239 84b1cb73 2003-09-30 devnull 			threadexits("plumb");	/* not a fatal error */
240 84b1cb73 2003-09-30 devnull 		}
241 af78a4cd 2004-03-02 devnull 		if(plumbformat(m, i)){
242 2277c5d7 2004-03-21 devnull 			send(plumbc, &i);
243 af78a4cd 2004-03-02 devnull 			i = 1-i;	/* toggle */
244 84b1cb73 2003-09-30 devnull 		}
245 84b1cb73 2003-09-30 devnull 	}
246 84b1cb73 2003-09-30 devnull }
247 84b1cb73 2003-09-30 devnull 
248 84b1cb73 2003-09-30 devnull int
249 84b1cb73 2003-09-30 devnull plumbstart(void)
250 84b1cb73 2003-09-30 devnull {
251 2277c5d7 2004-03-21 devnull 	Fid *fid;
252 84b1cb73 2003-09-30 devnull 
253 84b1cb73 2003-09-30 devnull 	plumbfd = plumbopen("send", OWRITE|OCEXEC);	/* not open is ok */
254 2277c5d7 2004-03-21 devnull 	fid = plumbopenfid("edit", OREAD|OCEXEC);
255 2277c5d7 2004-03-21 devnull 	if(fid == nil)
256 84b1cb73 2003-09-30 devnull 		return -1;
257 84b1cb73 2003-09-30 devnull 	plumbc = chancreate(sizeof(int), 0);
258 84b1cb73 2003-09-30 devnull 	if(plumbc == nil){
259 2277c5d7 2004-03-21 devnull 		fsclose(fid);
260 84b1cb73 2003-09-30 devnull 		return -1;
261 84b1cb73 2003-09-30 devnull 	}
262 2277c5d7 2004-03-21 devnull 	threadcreate(plumbproc, fid, STACK);
263 84b1cb73 2003-09-30 devnull 	return 1;
264 84b1cb73 2003-09-30 devnull }
265 84b1cb73 2003-09-30 devnull 
266 84b1cb73 2003-09-30 devnull void
267 84b1cb73 2003-09-30 devnull hostproc(void *arg)
268 84b1cb73 2003-09-30 devnull {
269 84b1cb73 2003-09-30 devnull 	Channel *c;
270 84b1cb73 2003-09-30 devnull 	int i, n, which;
271 84b1cb73 2003-09-30 devnull 
272 84b1cb73 2003-09-30 devnull 	c = arg;
273 84b1cb73 2003-09-30 devnull 
274 84b1cb73 2003-09-30 devnull 	i = 0;
275 5a8e63b2 2004-02-29 devnull 	threadfdnoblock(hostfd[0]);
276 84b1cb73 2003-09-30 devnull 	for(;;){
277 84b1cb73 2003-09-30 devnull 		i = 1-i;	/* toggle */
278 5a8e63b2 2004-02-29 devnull 		n = threadread(hostfd[0], hostbuf[i].data, sizeof hostbuf[i].data);
279 84b1cb73 2003-09-30 devnull 		if(n <= 0){
280 84b1cb73 2003-09-30 devnull 			fprint(2, "samterm: host read error: %r\n");
281 84b1cb73 2003-09-30 devnull 			threadexitsall("host");
282 84b1cb73 2003-09-30 devnull 		}
283 84b1cb73 2003-09-30 devnull 		hostbuf[i].n = n;
284 84b1cb73 2003-09-30 devnull 		which = i;
285 84b1cb73 2003-09-30 devnull 		send(c, &which);
286 84b1cb73 2003-09-30 devnull 	}
287 84b1cb73 2003-09-30 devnull }
288 84b1cb73 2003-09-30 devnull 
289 84b1cb73 2003-09-30 devnull void
290 84b1cb73 2003-09-30 devnull hoststart(void)
291 84b1cb73 2003-09-30 devnull {
292 84b1cb73 2003-09-30 devnull 	hostc = chancreate(sizeof(int), 0);
293 5a8e63b2 2004-02-29 devnull 	threadcreate(hostproc, hostc, STACK);
294 84b1cb73 2003-09-30 devnull }