1 /* 2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1983 Regents of the University of California. 8 * All rights reserved. The Berkeley software License Agreement 9 * specifies the terms and conditions for redistribution. 10 */ 11 12 #pragma ident "%Z%%M% %I% %E% SMI" 13 14 /* 15 * Routines for dialing up on DN-11 16 */ 17 #include "tip.h" 18 19 void alarmtr(void); 20 21 static sigjmp_buf jmpbuf; 22 static int child = -1, dn; 23 24 int 25 dn_dialer(char *num, char *acu) 26 { 27 int lt, nw; 28 int timelim; 29 struct termios buf; 30 31 if (boolean(value(VERBOSE))) 32 (void) printf("\nstarting call..."); 33 if ((dn = open(acu, 1)) < 0) { 34 if (errno == EBUSY) 35 (void) printf("line busy..."); 36 else 37 (void) printf("acu open error..."); 38 return (0); 39 } 40 if (sigsetjmp(jmpbuf, 1)) { 41 (void) kill(child, SIGKILL); 42 (void) close(dn); 43 return (0); 44 } 45 (void) signal(SIGALRM, (sig_handler_t)alarmtr); 46 timelim = 5 * strlen(num); 47 (void) alarm(timelim < 30 ? 30 : timelim); 48 if ((child = fork()) == 0) { 49 /* 50 * ignore this stuff for aborts 51 */ 52 (void) signal(SIGALRM, SIG_IGN); 53 (void) signal(SIGINT, SIG_IGN); 54 (void) signal(SIGQUIT, SIG_IGN); 55 (void) 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 (void) printf("lost carrier..."); 65 else 66 (void) printf("dialup line open failed..."); 67 (void) alarm(0); 68 (void) kill(child, SIGKILL); 69 (void) close(dn); 70 return (0); 71 } 72 (void) alarm(0); 73 (void) ioctl(dn, TCGETS, &buf); 74 buf.c_cflag |= HUPCL; 75 (void) ioctl(dn, TCSETSF, &buf); 76 (void) signal(SIGALRM, SIG_DFL); 77 while ((nw = wait(<)) != child && nw != -1) 78 ; 79 (void) fflush(stdout); 80 (void) close(dn); 81 if (lt != 0) { 82 (void) close(FD); 83 return (0); 84 } 85 return (1); 86 } 87 88 void 89 alarmtr(void) 90 { 91 92 (void) 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 void 101 dn_disconnect(void) 102 { 103 int dtr = TIOCM_DTR; 104 105 (void) sleep(2); 106 if (FD > 0) 107 (void) ioctl(FD, TIOCMBIC, &dtr); 108 (void) close(FD); 109 } 110 111 void 112 dn_abort(void) 113 { 114 int dtr = TIOCM_DTR; 115 116 (void) sleep(2); 117 if (child > 0) 118 (void) kill(child, SIGKILL); 119 if (dn > 0) 120 (void) close(dn); 121 if (FD > 0) 122 (void) ioctl(FD, TIOCMBIC, &dtr); 123 (void) close(FD); 124 } 125