1 /* 2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 /* 6 * Copyright (c) 1983 Regents of the University of California. 7 * All rights reserved. The Berkeley software License Agreement 8 * specifies the terms and conditions for redistribution. 9 */ 10 #ident "%Z%%M% %I% %E% SMI" /* from UCB 4.14 6/25/83 */ 11 12 /* 13 * Routines for dialing up on DN-11 14 */ 15 #include "tip.h" 16 17 int dn_abort(); 18 void alarmtr(); 19 static sigjmp_buf jmpbuf; 20 static int child = -1, dn; 21 22 dn_dialer(num, acu) 23 char *num, *acu; 24 { 25 extern errno; 26 char *p, *q, phone[40]; 27 int lt, nw, connected = 1; 28 register int timelim; 29 struct termios buf; 30 31 if (boolean(value(VERBOSE))) 32 printf("\nstarting call..."); 33 if ((dn = open(acu, 1)) < 0) { 34 if (errno == EBUSY) 35 printf("line busy..."); 36 else 37 printf("acu open error..."); 38 return (0); 39 } 40 if (sigsetjmp(jmpbuf, 1)) { 41 kill(child, SIGKILL); 42 close(dn); 43 return (0); 44 } 45 signal(SIGALRM, alarmtr); 46 timelim = 5 * strlen(num); 47 alarm(timelim < 30 ? 30 : timelim); 48 if ((child = fork()) == 0) { 49 /* 50 * ignore this stuff for aborts 51 */ 52 signal(SIGALRM, SIG_IGN); 53 signal(SIGINT, SIG_IGN); 54 signal(SIGQUIT, SIG_IGN); 55 sleep(2); 56 nw = write(dn, num, lt = strlen(num)); 57 exit(nw != lt); 58 } 59 /* 60 * open line - will return on carrier 61 */ 62 if ((FD = open(DV, 2)) < 0) { 63 if (errno == EIO) 64 printf("lost carrier..."); 65 else 66 printf("dialup line open failed..."); 67 alarm(0); 68 kill(child, SIGKILL); 69 close(dn); 70 return (0); 71 } 72 alarm(0); 73 ioctl(dn, TCGETS, &buf); 74 buf.c_cflag |= HUPCL; 75 ioctl(dn, TCSETSF, &buf); 76 signal(SIGALRM, SIG_DFL); 77 while ((nw = wait(<)) != child && nw != -1) 78 ; 79 fflush(stdout); 80 close(dn); 81 if (lt != 0) { 82 close(FD); 83 return (0); 84 } 85 return (1); 86 } 87 88 void 89 alarmtr() 90 { 91 92 alarm(0); 93 siglongjmp(jmpbuf, 1); 94 } 95 96 /* 97 * Insurance, for some reason we don't seem to be 98 * hanging up... 99 */ 100 dn_disconnect() 101 { 102 int dtr = TIOCM_DTR; 103 104 sleep(2); 105 if (FD > 0) 106 ioctl(FD, TIOCMBIC, &dtr); 107 close(FD); 108 } 109 110 dn_abort() 111 { 112 int dtr = TIOCM_DTR; 113 114 sleep(2); 115 if (child > 0) 116 kill(child, SIGKILL); 117 if (dn > 0) 118 close(dn); 119 if (FD > 0) 120 ioctl(FD, TIOCMBIC, &dtr); 121 close(FD); 122 } 123