projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 674388c7 GM |
1 | #include <arpa/telnet.h> |
| 2 | ||
| 3 | #include "externs.h" | |
| 4 | #include "types.h" | |
| 5 | ||
| 6 | char ttyobuf[2*BUFSIZ], *tfrontp, *tbackp; | |
| 7 | ||
| 8 | char | |
| 9 | termEofChar, | |
| 10 | termEraseChar, | |
| 11 | termFlushChar, | |
| 12 | termIntChar, | |
| 13 | termKillChar, | |
| 14 | termLiteralNextChar, | |
| 15 | termQuitChar; | |
| 16 | ||
| 17 | /* | |
| 18 | * initialize the terminal data structures. | |
| 19 | */ | |
| 20 | ||
| 21 | init_terminal() | |
| 22 | { | |
| 23 | tfrontp = tbackp = ttyobuf; | |
| 24 | autoflush = TerminalAutoFlush(); | |
| 25 | } | |
| 26 | ||
| 27 | ||
| 28 | /* | |
| 29 | * Send as much data as possible to the terminal. | |
| 30 | * | |
| 31 | * The return value indicates whether we did any | |
| 32 | * useful work. | |
| 33 | */ | |
| 34 | ||
| 35 | ||
| 36 | int | |
| d732be39 GM |
37 | ttyflush(drop) |
| 38 | int drop; | |
| 674388c7 GM |
39 | { |
| 40 | int n; | |
| 41 | ||
| 42 | if ((n = tfrontp - tbackp) > 0) { | |
| d732be39 | 43 | if (drop) { |
| 674388c7 GM |
44 | TerminalFlushOutput(); |
| 45 | /* we leave 'n' alone! */ | |
| d732be39 GM |
46 | } else { |
| 47 | n = TerminalWrite(tout, tbackp, n); | |
| 674388c7 GM |
48 | } |
| 49 | } | |
| 50 | if (n >= 0) { | |
| 51 | tbackp += n; | |
| 52 | if (tbackp == tfrontp) { | |
| 53 | tbackp = tfrontp = ttyobuf; | |
| 54 | } | |
| 55 | } | |
| 56 | return n > 0; | |
| 57 | } | |
| 58 | ||
| 674388c7 GM |
59 | \f |
| 60 | #if defined(unix) | |
| 61 | /* | |
| 62 | * Various signal handling routines. | |
| 63 | */ | |
| 64 | ||
| 65 | void | |
| 66 | deadpeer() | |
| 67 | { | |
| 68 | setcommandmode(); | |
| 69 | longjmp(peerdied, -1); | |
| 70 | } | |
| 71 | ||
| 72 | void | |
| 73 | intr() | |
| 74 | { | |
| 75 | if (localchars) { | |
| 76 | intp(); | |
| 77 | return; | |
| 78 | } | |
| 79 | setcommandmode(); | |
| 80 | longjmp(toplevel, -1); | |
| 81 | } | |
| 82 | ||
| 83 | void | |
| 84 | intr2() | |
| 85 | { | |
| 86 | if (localchars) { | |
| 87 | sendbrk(); | |
| 88 | return; | |
| 89 | } | |
| 90 | } | |
| 91 | ||
| 92 | void | |
| 93 | doescape() | |
| 94 | { | |
| 95 | command(0); | |
| 96 | } | |
| 97 | #endif /* defined(unix) */ | |
| 98 | \f | |
| 99 | /* | |
| 100 | * These routines decides on what the mode should be (based on the values | |
| 101 | * of various global variables). | |
| 102 | */ | |
| 103 | ||
| 104 | ||
| 105 | int | |
| 106 | getconnmode() | |
| 107 | { | |
| 108 | static char newmode[16] = | |
| 109 | { 4, 5, 3, 3, 2, 2, 1, 1, 6, 6, 6, 6, 6, 6, 6, 6 }; | |
| 110 | int modeindex = 0; | |
| 111 | ||
| 112 | if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) { | |
| 113 | modeindex += 1; | |
| 114 | } | |
| 115 | if (hisopts[TELOPT_ECHO]) { | |
| 116 | modeindex += 2; | |
| 117 | } | |
| 118 | if (hisopts[TELOPT_SGA]) { | |
| 119 | modeindex += 4; | |
| 120 | } | |
| 121 | if (In3270) { | |
| 122 | modeindex += 8; | |
| 123 | } | |
| 124 | return newmode[modeindex]; | |
| 125 | } | |
| 126 | ||
| 127 | void | |
| 128 | setconnmode() | |
| 129 | { | |
| 130 | TerminalNewMode(tin, tout, getconnmode()); | |
| 131 | } | |
| 132 | ||
| 133 | ||
| 134 | void | |
| 135 | setcommandmode() | |
| 136 | { | |
| 137 | TerminalNewMode(tin, tout, 0); | |
| 138 | } |