1 /* v831.c 4.3 83/06/18 */ 2 3 #ifdef V831 4 /* 5 * Routines for dialing up on Vadic 831 6 */ 7 #include <sys/file.h> 8 #include <sys/time.h> 9 10 #include <setjmp.h> 11 #include <errno.h> 12 #include <sgtty.h> 13 14 #include "tip.h" 15 16 static char *sccsid = "@(#)v831.c 4.3 06/18/83"; 17 18 int v831_abort(); 19 static int alarmtr(); 20 extern errno; 21 22 static jmp_buf jmpbuf; 23 static int child = -1; 24 25 v831_dialer(num, acu) 26 char *num, *acu; 27 { 28 int status, pid, connected = 1; 29 register int timelim; 30 31 if (boolean(value(VERBOSE))) 32 printf("\nstarting call..."); 33 #ifdef DEBUG 34 printf ("(acu=%s)\n", acu); 35 #endif 36 if ((AC = open(acu, O_RDWR)) < 0) { 37 if (errno == EBUSY) 38 printf("line busy..."); 39 else 40 printf("acu open error..."); 41 return (0); 42 } 43 if (setjmp(jmpbuf)) { 44 kill(child, SIGKILL); 45 close(AC); 46 return (0); 47 } 48 signal(SIGALRM, alarmtr); 49 timelim = 5 * strlen(num); 50 alarm(timelim < 30 ? 30 : timelim); 51 if ((child = fork()) == 0) { 52 /* 53 * ignore this stuff for aborts 54 */ 55 signal(SIGALRM, SIG_IGN); 56 signal(SIGINT, SIG_IGN); 57 signal(SIGQUIT, SIG_IGN); 58 sleep(2); 59 exit(dialit(num, acu) != 'A'); 60 } 61 /* 62 * open line - will return on carrier 63 */ 64 if ((FD = open(DV, O_RDWR)) < 0) { 65 #ifdef DEBUG 66 printf("(after open, errno=%d)\n", errno); 67 #endif 68 if (errno == EIO) 69 printf("lost carrier..."); 70 else 71 printf("dialup line open failed..."); 72 alarm(0); 73 kill(child, SIGKILL); 74 close(AC); 75 return (0); 76 } 77 alarm(0); 78 #ifdef notdef 79 ioctl(AC, TIOCHPCL, 0); 80 #endif 81 signal(SIGALRM, SIG_DFL); 82 while ((pid = wait(&status)) != child && pid != -1) 83 ; 84 if (status) { 85 close(AC); 86 return (0); 87 } 88 return (1); 89 } 90 91 static 92 alarmtr() 93 { 94 95 alarm(0); 96 longjmp(jmpbuf, 1); 97 } 98 99 /* 100 * Insurance, for some reason we don't seem to be 101 * hanging up... 102 */ 103 v831_disconnect() 104 { 105 struct sgttyb cntrl; 106 107 sleep(2); 108 #ifdef VMUNIX 109 #ifdef DEBUG 110 printf("[disconnect: FD=%d]\n", FD); 111 #endif 112 if (FD > 0) { 113 ioctl(FD, TIOCCDTR, 0); 114 ioctl(FD, TIOCGETP, &cntrl); 115 cntrl.sg_ispeed = cntrl.sg_ospeed = 0; 116 ioctl(FD, TIOCSETP, &cntrl); 117 ioctl(FD, TIOCNXCL, (struct sgttyb *)NULL); 118 } 119 #endif 120 close(FD); 121 } 122 123 v831_abort() 124 { 125 126 #ifdef DEBUG 127 printf("[abort: AC=%d]\n", AC); 128 #endif 129 sleep(2); 130 if (child > 0) 131 kill(child, SIGKILL); 132 if (AC > 0) 133 ioctl(FD, TIOCNXCL, (struct sgttyb *)NULL); 134 close(AC); 135 #ifdef VMUNIX 136 if (FD > 0) 137 ioctl(FD, TIOCCDTR, 0); 138 #endif 139 close(FD); 140 } 141 #endif 142 143 /* 144 * Sigh, this probably must be changed at each site. 145 */ 146 struct vaconfig { 147 char *vc_name; 148 char vc_rack; 149 char vc_modem; 150 } vaconfig[] = { 151 { "/dev/cua0",'4','0' }, 152 { "/dev/cua1",'4','1' }, 153 { 0 } 154 }; 155 156 #define pc(x) (c = x, write(AC,&c,1)) 157 #define ABORT 01 158 #define SI 017 159 #define STX 02 160 #define ETX 03 161 162 static 163 dialit(phonenum, acu) 164 register char *phonenum; 165 char *acu; 166 { 167 register struct vaconfig *vp; 168 struct sgttyb cntrl; 169 char c, *sanitize(); 170 int i, two = 2; 171 172 phonenum = sanitize(phonenum); 173 #ifdef DEBUG 174 printf ("(dial phonenum=%s)\n", phonenum); 175 #endif 176 if (*phonenum == '<' && phonenum[1] == 0) 177 return ('Z'); 178 for (vp = vaconfig; vp->vc_name; vp++) 179 if (strcmp(vp->vc_name, acu) == 0) 180 break; 181 if (vp->vc_name == 0) { 182 printf("Unable to locate dialer (%s)\n", acu); 183 return ('K'); 184 } 185 ioctl(AC, TIOCGETP, &cntrl); 186 cntrl.sg_ispeed = cntrl.sg_ospeed = B2400; 187 cntrl.sg_flags = RAW | EVENP | ODDP; 188 ioctl(AC, TIOCSETP, &cntrl); 189 ioctl(AC, TIOCFLUSH, &two); 190 pc(STX); 191 pc(vp->vc_rack); 192 pc(vp->vc_modem); 193 while (*phonenum && *phonenum != '<') 194 pc(*phonenum++); 195 pc(SI); 196 pc(ETX); 197 sleep(1); 198 i = read(AC, &c, 1); 199 #ifdef DEBUG 200 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 201 #endif 202 if (i != 1) 203 c = 'M'; 204 if (c == 'B' || c == 'G') { 205 char cc, oc = c; 206 207 pc(ABORT); 208 read(AC, &cc, 1); 209 #ifdef DEBUG 210 printf("abort response=%c\n", cc); 211 #endif 212 c = oc; 213 v831_disconnect(); 214 } 215 close(AC); 216 #ifdef DEBUG 217 printf("dialit: returns %c\n", c); 218 #endif 219 return (c); 220 } 221 222 static char * 223 sanitize(s) 224 register char *s; 225 { 226 static char buf[128]; 227 register char *cp; 228 229 for (cp = buf; *s; s++) { 230 if (!isdigit(*s) && *s == '<' && *s != '_') 231 continue; 232 if (*s == '_') 233 *s = '='; 234 *cp++ = *s; 235 } 236 *cp++ = 0; 237 return (buf); 238 } 239