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f49909f5 | 1 | /*- |
17e8cbca KB |
2 | * Copyright (c) 1985, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
f49909f5 KB |
4 | * |
5 | * %sccs.include.proprietary.c% | |
6 | */ | |
7 | ||
fe89f007 | 8 | #ifndef lint |
17e8cbca | 9 | static char sccsid[] = "@(#)rvmacs.c 8.1 (Berkeley) %G%"; |
f49909f5 | 10 | #endif /* not lint */ |
fe89f007 | 11 | |
ddf4e66c | 12 | #include "condevs.h" |
fe89f007 RC |
13 | |
14 | /* | |
15 | * Racal-Vadic 'RV820' MACS system with 831 adaptor. | |
16 | * A typical 300 baud L-devices entry is | |
17 | * ACU tty10 tty11,48 300 rvmacs | |
18 | * where tty10 is the communication line (D_Line), | |
19 | * tty11 is the dialer line (D_calldev), | |
20 | * the '4' is the dialer address + modem type (viz. dialer 0, Bell 103), | |
21 | * the '8' is the communication port, | |
389c25f1 JB |
22 | * We assume the dialer speed is 1200 baud unless MULTISPEED is defined. |
23 | * We extended the semantics of the L-devices entry to allow you | |
24 | * to set the speed at which the computer talks to the dialer: | |
25 | * ACU cul0 cua0,0<,2400 1200 rvmacs | |
26 | * This is interpreted as above, except that the number following the second | |
27 | * comma in the third field is taken to be the speed at which the computer | |
28 | * must communicate with the dialer. (If omitted, it defaults to the value | |
29 | * in the fourth field.) Note -- just after the call completes and you get | |
30 | * carrier, the line speed is reset to the speed indicated in the fourth field. | |
31 | * To get this ability, define "MULTISPEED", as below. | |
32 | * | |
fe89f007 | 33 | */ |
389c25f1 | 34 | #define MULTISPEED /* for dialers which work at various speeds */ |
fe89f007 RC |
35 | |
36 | #define STX 02 /* Access Adaptor */ | |
37 | #define ETX 03 /* Transfer to Dialer */ | |
38 | #define SI 017 /* Buffer Empty (end of phone number) */ | |
39 | #define ABORT 01 /* Abort */ | |
40 | ||
41 | #define pc(fd, x) (c = x, write(fd, &c, 1)) | |
42 | ||
43 | rvmacsopn(ph, flds, dev) | |
44 | char *ph, *flds[]; | |
45 | struct Devices *dev; | |
46 | { | |
47 | register int va, i, child; | |
48 | register char *p; | |
fe89f007 RC |
49 | char c, acu[20], com[20]; |
50 | int baudrate; | |
51 | int timelim; | |
52 | int pid, status; | |
53 | int zero = 0; | |
f224aaa1 JB |
54 | #ifdef MULTISPEED |
55 | char *pp; | |
56 | #else !MULTISPEED | |
fe89f007 | 57 | struct sgttyb sg; |
f224aaa1 | 58 | #endif MULTISPEED |
fe89f007 RC |
59 | |
60 | child = -1; | |
61 | sprintf(com, "/dev/%s", dev->D_line); | |
62 | sprintf(acu, "/dev/%s", dev->D_calldev); | |
63 | if ((p = index(acu, ',')) == NULL) { | |
64 | DEBUG(2, "No dialer/modem specification\n", 0); | |
65 | return CF_DIAL; | |
66 | } | |
67 | *p++ = '\0'; | |
389c25f1 JB |
68 | #ifdef MULTISPEED |
69 | baudrate = dev->D_speed; | |
70 | if ((pp = index(p, ',')) != NULL){ | |
71 | baudrate = atoi(pp+1); | |
72 | DEBUG(5, "Using speed %d baud\n", baudrate); | |
73 | } | |
74 | #endif MULTISPEED | |
fe89f007 RC |
75 | if (setjmp(Sjbuf)) { |
76 | logent("rvmacsopn", "TIMEOUT"); | |
77 | goto failret; | |
78 | } | |
79 | DEBUG(4, "STARTING CALL\n", 0); | |
80 | getnextfd(); | |
81 | signal(SIGALRM, alarmtr); | |
82 | timelim = 5 * strlen(ph); | |
83 | alarm(timelim < 45 ? 45 : timelim); | |
84 | ||
85 | if ((va = open(acu, 2)) < 0) { | |
86 | logent(acu, "CAN'T OPEN"); | |
87 | alarm(0); | |
88 | return CF_DIAL; | |
89 | } | |
90 | ||
91 | /* rti!trt: avoid passing acu file descriptor to children */ | |
92 | next_fd = -1; | |
93 | fioclex(va); | |
94 | ||
95 | if ((child = fork()) == 0) { | |
96 | /* create child to do dialing */ | |
97 | sleep(2); | |
98 | fclose(stdin); | |
99 | fclose(stdout); | |
389c25f1 JB |
100 | #ifdef MULTISPEED |
101 | fixline(va, baudrate); | |
102 | #else !MULTISPEED | |
fe89f007 RC |
103 | sg.sg_flags = RAW|ANYP; |
104 | sg.sg_ispeed = sg.sg_ospeed = B1200; | |
105 | ioctl(va, TIOCSETP, &sg); | |
389c25f1 | 106 | #endif MULTISPEED |
fe89f007 RC |
107 | pc(va, ABORT); |
108 | sleep(1); | |
109 | ioctl(va, TIOCFLUSH, &zero); | |
110 | pc(va, STX); /* access adaptor */ | |
111 | pc(va, *p++); /* Send Dialer Address Digit */ | |
112 | pc(va, *p); /* Send Modem Address Digit */ | |
113 | while (*ph && *ph != '<') { | |
114 | switch (*ph) { | |
115 | case '_': | |
116 | case '-': | |
117 | case '=': | |
118 | pc(va, '='); | |
119 | break; | |
120 | default: | |
121 | if (*ph >= '0' && *ph <= '9') | |
122 | pc(va, *ph); | |
123 | break; | |
124 | } | |
125 | ph++; | |
126 | } | |
127 | pc(va, '<'); /* Transfer Control to Modem (sigh) */ | |
128 | pc(va, SI); /* Send Buffer Empty */ | |
129 | pc(va, ETX); /* Initiate Call */ | |
130 | sleep(1); | |
131 | ||
132 | if (read(va, &c, 1) != 1) { | |
133 | close(va); | |
134 | logent("ACU READ", _FAILED); | |
135 | exit(1); | |
136 | } | |
137 | if (c == 'B' || c == 'G') { | |
138 | char cc; | |
139 | pc(va, ABORT); | |
140 | read(va, &cc, 1); | |
141 | } | |
142 | DEBUG(4, "Dialer returned %c\n", c); | |
143 | close(va); | |
144 | exit(c != 'A'); | |
145 | } | |
146 | /* | |
147 | * open line - will return on carrier | |
148 | */ | |
149 | if ((i = open(com, 2)) < 0) { | |
150 | if (errno == EIO) | |
151 | logent("carrier", "LOST"); | |
152 | else | |
153 | logent("dialup open", _FAILED); | |
154 | goto failret; | |
155 | } | |
156 | while ((pid = wait(&status)) != child && pid != -1) | |
157 | ; | |
158 | alarm(0); | |
159 | if (status) { | |
160 | close(i); | |
161 | close(va); /* XXX */ | |
162 | return CF_DIAL; | |
163 | } | |
164 | fixline(i, dev->D_speed); | |
165 | return i; | |
166 | ||
167 | failret: | |
168 | alarm(0); | |
169 | close(va); | |
170 | if (child != -1) | |
171 | kill(child, SIGKILL); | |
172 | return CF_DIAL; | |
173 | } | |
174 | ||
175 | rvmacscls(fd) | |
176 | register int fd; | |
177 | { | |
178 | if (fd > 0) { | |
374cc5f3 JB |
179 | char c; |
180 | ||
181 | pc(fd, ABORT); | |
fe89f007 RC |
182 | ioctl(fd, TIOCCDTR, STBNULL); |
183 | sleep(1); | |
184 | ioctl(fd, TIOCNXCL, STBNULL); | |
185 | close(fd); | |
186 | delock(devSel); | |
187 | } | |
188 | } |