| 1 | /* biz31.c 4.4 81/11/29 */ |
| 2 | #include "tip.h" |
| 3 | |
| 4 | #if BIZ1031 |
| 5 | #define MAXRETRY 3 /* sync up retry count */ |
| 6 | #define DISCONNECT "\21\25\11\24" /* disconnection string */ |
| 7 | |
| 8 | static int sigALRM(); |
| 9 | static int timeout = 0; |
| 10 | |
| 11 | /* |
| 12 | * Dial up on a BIZCOMP Model 1031 with either |
| 13 | * tone dialing (mod = "f") |
| 14 | * pulse dialing (mod = "w") |
| 15 | */ |
| 16 | static int |
| 17 | biz_dialer(num, mod) |
| 18 | char *num, *mod; |
| 19 | { |
| 20 | register int connected = 0; |
| 21 | |
| 22 | if (!bizsync(FD)) { |
| 23 | logent(value(HOST), "", "biz", "out of sync"); |
| 24 | printf("bizcomp out of sync\n"); |
| 25 | delock(uucplock); |
| 26 | exit(0); |
| 27 | } |
| 28 | if (boolean(value(VERBOSE))) |
| 29 | printf("\nstarting call..."); |
| 30 | echo("#\rk$\r$\n"); /* disable auto-answer */ |
| 31 | echo("$>$.$ #\r"); /* tone/pulse dialing */ |
| 32 | echo(mod); |
| 33 | echo("$\r$\n"); |
| 34 | echo("$>$.$ #\re$ "); /* disconnection sequence */ |
| 35 | echo(DISCONNECT); |
| 36 | echo("\r$\n$\r$\n"); |
| 37 | echo("$>$.$ #\rr$ "); /* repeat dial */ |
| 38 | echo(num); |
| 39 | echo("\r$\n"); |
| 40 | if (boolean(value(VERBOSE))) |
| 41 | printf("ringing..."); |
| 42 | /* |
| 43 | * The reply from the BIZCOMP should be: |
| 44 | * `^G NO CONNECTION\r\n^G\r\n' failure |
| 45 | * ` CONNECTION\r\n^G' success |
| 46 | */ |
| 47 | connected = detect(" "); |
| 48 | #ifdef ACULOG |
| 49 | if (timeout) { |
| 50 | char line[80]; |
| 51 | |
| 52 | sprintf(line, "%d second dial timeout", |
| 53 | number(value(DIALTIMEOUT))); |
| 54 | logent(value(HOST), num, "biz", line); |
| 55 | } |
| 56 | #endif |
| 57 | if (!connected) |
| 58 | flush(" NO CONNECTION\r\n\07\r\n"); |
| 59 | else |
| 60 | flush("CONNECTION\r\n\07"); |
| 61 | if (timeout) |
| 62 | biz31_disconnect(); /* insurance */ |
| 63 | return (connected); |
| 64 | } |
| 65 | |
| 66 | biz31w_dialer(num, acu) |
| 67 | char *num, *acu; |
| 68 | { |
| 69 | return (biz_dialer(num, "w")); |
| 70 | } |
| 71 | |
| 72 | biz31f_dialer(num, acu) |
| 73 | char *num, *acu; |
| 74 | { |
| 75 | return (biz_dialer(num, "f")); |
| 76 | } |
| 77 | |
| 78 | biz31_disconnect() |
| 79 | { |
| 80 | write(FD, DISCONNECT, 4); |
| 81 | sleep(2); |
| 82 | ioctl(FD, TIOCFLUSH); |
| 83 | } |
| 84 | |
| 85 | biz31_abort() |
| 86 | { |
| 87 | write(FD, "\33", 1); |
| 88 | timeout = 1; |
| 89 | } |
| 90 | |
| 91 | static int |
| 92 | echo(s) |
| 93 | register char *s; |
| 94 | { |
| 95 | char c; |
| 96 | |
| 97 | while (c = *s++) switch (c) { |
| 98 | |
| 99 | case '$': |
| 100 | read(FD, &c, 1); |
| 101 | s++; |
| 102 | break; |
| 103 | |
| 104 | case '#': |
| 105 | c = *s++; |
| 106 | write(FD, &c, 1); |
| 107 | break; |
| 108 | |
| 109 | default: |
| 110 | write(FD, &c, 1); |
| 111 | read(FD, &c, 1); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | sigALRM() |
| 117 | { |
| 118 | signal(SIGALRM, SIG_IGN); |
| 119 | printf("\07timeout waiting for reply\n"); |
| 120 | timeout = 1; |
| 121 | } |
| 122 | |
| 123 | static int |
| 124 | detect(s) |
| 125 | register char *s; |
| 126 | { |
| 127 | char c; |
| 128 | |
| 129 | signal(SIGALRM, biz31_abort); |
| 130 | timeout = 0; |
| 131 | while (*s) { |
| 132 | alarm(number(value(DIALTIMEOUT))); |
| 133 | read(FD, &c, 1); |
| 134 | alarm(0); |
| 135 | if (timeout) |
| 136 | return (0); |
| 137 | if (c != *s++) |
| 138 | return (0); |
| 139 | } |
| 140 | signal(SIGALRM, SIG_DFL); |
| 141 | return (1); |
| 142 | } |
| 143 | |
| 144 | static int |
| 145 | flush(s) |
| 146 | register char *s; |
| 147 | { |
| 148 | char c; |
| 149 | |
| 150 | signal(SIGALRM, sigALRM); |
| 151 | timeout = 0; |
| 152 | while (*s++) { |
| 153 | alarm(10); |
| 154 | read(FD, &c, 1); |
| 155 | alarm(0); |
| 156 | if (timeout) |
| 157 | break; |
| 158 | } |
| 159 | signal(SIGALRM, SIG_DFL); |
| 160 | timeout = 0; /* guard against disconnection */ |
| 161 | return (1); |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | * This convoluted piece of code attempts to get |
| 166 | * the bizcomp in sync. If you don't have the capacity or nread |
| 167 | * call there are gory ways to simulate this. |
| 168 | */ |
| 169 | static int |
| 170 | bizsync(fd) |
| 171 | { |
| 172 | #ifdef FIOCAPACITY |
| 173 | struct capacity b; |
| 174 | # define chars(b) ((b).cp_nbytes) |
| 175 | # define IOCTL FIOCAPACITY |
| 176 | #endif |
| 177 | #ifdef FIONREAD |
| 178 | long b; |
| 179 | # define chars(b) (b) |
| 180 | # define IOCTL FIONREAD |
| 181 | #endif |
| 182 | register int already = 0; |
| 183 | char buf[10]; |
| 184 | |
| 185 | retry: |
| 186 | if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0) |
| 187 | ioctl(fd, TIOCFLUSH); |
| 188 | write(fd, "\rp>\r", 4); |
| 189 | sleep(1); |
| 190 | if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) { |
| 191 | if (chars(b) != 10) { |
| 192 | nono: |
| 193 | if (already > MAXRETRY) |
| 194 | return (0); |
| 195 | write(fd, DISCONNECT, 4); |
| 196 | sleep(2); |
| 197 | already++; |
| 198 | goto retry; |
| 199 | } else { |
| 200 | read(fd, buf, 10); |
| 201 | if (strncmp(buf, "p >\r\n\r\n>", 8)) |
| 202 | goto nono; |
| 203 | } |
| 204 | } |
| 205 | return (1); |
| 206 | } |
| 207 | #endif |