2 * Copyright (c) 1980, 1993
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15 * This product includes software developed by the University of
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33 * @(#)tty.c 8.2 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/mail/tty.c,v 1.2.8.3 2003/01/06 05:46:04 mikeh Exp $
35 * $DragonFly: src/usr.bin/mail/tty.c,v 1.5 2004/09/08 03:01:11 joerg Exp $
39 * Mail -- a mail program
41 * Generally useful tty stuff.
47 static cc_t c_erase; /* Current erase char */
48 static cc_t c_kill; /* Current kill char */
49 static jmp_buf rewrite; /* Place to go when continued */
50 static jmp_buf intjmp; /* Place to go when interrupted */
53 * Read all relevant header fields.
57 grabh(struct header *hp, int gflags)
59 struct termios ttybuf;
67 savetstp = signal(SIGTSTP, SIG_DFL);
68 savettou = signal(SIGTTOU, SIG_DFL);
69 savettin = signal(SIGTTIN, SIG_DFL);
71 if (tcgetattr(fileno(stdin), &ttybuf) < 0) {
72 warn("tcgetattr(stdin)");
75 c_erase = ttybuf.c_cc[VERASE];
76 c_kill = ttybuf.c_cc[VKILL];
77 extproc = ((ttybuf.c_lflag & EXTPROC) ? 1 : 0);
80 if (ioctl(fileno(stdin), TIOCEXT, &flag) < 0)
85 saveint = signal(SIGINT, ttyint);
88 extract(readtty("To: ", detract(hp->h_to, 0)), GTO);
90 if (gflags & GSUBJECT) {
91 hp->h_subject = readtty("Subject: ", hp->h_subject);
95 extract(readtty("Cc: ", detract(hp->h_cc, 0)), GCC);
99 extract(readtty("Bcc: ", detract(hp->h_bcc, 0)), GBCC);
102 signal(SIGTSTP, savetstp);
103 signal(SIGTTOU, savettou);
104 signal(SIGTTIN, savettin);
107 if (ioctl(fileno(stdin), TIOCEXT, &flag) < 0)
110 signal(SIGINT, saveint);
115 * Read up a header from standard input.
116 * The source string has the preliminary contents to
122 readtty(const char *pr, char *src)
124 char ch, canonb[BUFSIZ];
130 if (src != NULL && strlen(src) > BUFSIZ - 2) {
131 printf("too long to edit\n");
134 cp = src == NULL ? "" : src;
135 while ((c = *cp++) != '\0') {
136 if ((c_erase != _POSIX_VDISABLE && c == c_erase) ||
137 (c_kill != _POSIX_VDISABLE && c == c_kill)) {
139 ioctl(0, TIOCSTI, &ch);
142 ioctl(0, TIOCSTI, &ch);
147 while (cp2 < canonb + BUFSIZ)
152 signal(SIGTSTP, ttystop);
153 signal(SIGTTOU, ttystop);
154 signal(SIGTTIN, ttystop);
156 while (cp2 < canonb + BUFSIZ) {
158 if (c == EOF || c == '\n')
163 signal(SIGTSTP, SIG_DFL);
164 signal(SIGTTOU, SIG_DFL);
165 signal(SIGTTIN, SIG_DFL);
166 if (c == EOF && ferror(stdin)) {
168 cp = strlen(canonb) > 0 ? canonb : NULL;
170 return (readtty(pr, cp));
172 if (equal("", canonb))
174 return (savestr(canonb));
178 * Receipt continuation.
183 sig_t old_action = signal(s, SIG_DFL);
188 sigprocmask(SIG_BLOCK, &nset, NULL);
190 sigprocmask(SIG_UNBLOCK, &nset, NULL);
191 signal(s, old_action);