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