1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)tipout.c 8.1 (Berkeley) 06/06/93"; 10 #endif /* not lint */ 11 12 #include "tip.h" 13 /* 14 * tip 15 * 16 * lower fork of tip -- handles passive side 17 * reading from the remote host 18 */ 19 20 static jmp_buf sigbuf; 21 22 /* 23 * TIPOUT wait state routine -- 24 * sent by TIPIN when it wants to posses the remote host 25 */ 26 void 27 intIOT() 28 { 29 30 write(repdes[1],&ccc,1); 31 read(fildes[0], &ccc,1); 32 longjmp(sigbuf, 1); 33 } 34 35 /* 36 * Scripting command interpreter -- 37 * accepts script file name over the pipe and acts accordingly 38 */ 39 void 40 intEMT() 41 { 42 char c, line[256]; 43 register char *pline = line; 44 char reply; 45 46 read(fildes[0], &c, 1); 47 while (c != '\n') { 48 *pline++ = c; 49 read(fildes[0], &c, 1); 50 } 51 *pline = '\0'; 52 if (boolean(value(SCRIPT)) && fscript != NULL) 53 fclose(fscript); 54 if (pline == line) { 55 boolean(value(SCRIPT)) = FALSE; 56 reply = 'y'; 57 } else { 58 if ((fscript = fopen(line, "a")) == NULL) 59 reply = 'n'; 60 else { 61 reply = 'y'; 62 boolean(value(SCRIPT)) = TRUE; 63 } 64 } 65 write(repdes[1], &reply, 1); 66 longjmp(sigbuf, 1); 67 } 68 69 void 70 intTERM() 71 { 72 73 if (boolean(value(SCRIPT)) && fscript != NULL) 74 fclose(fscript); 75 exit(0); 76 } 77 78 void 79 intSYS() 80 { 81 82 boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY)); 83 longjmp(sigbuf, 1); 84 } 85 86 /* 87 * ****TIPOUT TIPOUT**** 88 */ 89 tipout() 90 { 91 char buf[BUFSIZ]; 92 register char *cp; 93 register int cnt; 94 extern int errno; 95 int omask; 96 97 signal(SIGINT, SIG_IGN); 98 signal(SIGQUIT, SIG_IGN); 99 signal(SIGEMT, intEMT); /* attention from TIPIN */ 100 signal(SIGTERM, intTERM); /* time to go signal */ 101 signal(SIGIOT, intIOT); /* scripting going on signal */ 102 signal(SIGHUP, intTERM); /* for dial-ups */ 103 signal(SIGSYS, intSYS); /* beautify toggle */ 104 (void) setjmp(sigbuf); 105 for (omask = 0;; sigsetmask(omask)) { 106 cnt = read(FD, buf, BUFSIZ); 107 if (cnt <= 0) { 108 /* lost carrier */ 109 if (cnt < 0 && errno == EIO) { 110 sigblock(sigmask(SIGTERM)); 111 intTERM(); 112 /*NOTREACHED*/ 113 } 114 continue; 115 } 116 #define ALLSIGS sigmask(SIGEMT)|sigmask(SIGTERM)|sigmask(SIGIOT)|sigmask(SIGSYS) 117 omask = sigblock(ALLSIGS); 118 for (cp = buf; cp < buf + cnt; cp++) 119 *cp &= 0177; 120 write(1, buf, cnt); 121 if (boolean(value(SCRIPT)) && fscript != NULL) { 122 if (!boolean(value(BEAUTIFY))) { 123 fwrite(buf, 1, cnt, fscript); 124 continue; 125 } 126 for (cp = buf; cp < buf + cnt; cp++) 127 if ((*cp >= ' ' && *cp <= '~') || 128 any(*cp, value(EXCEPTIONS))) 129 putc(*cp, fscript); 130 } 131 } 132 } 133