version 1.12, 2001/06/23 23:04:23 |
version 1.13, 2001/11/20 20:50:00 |
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#include "rcv.h" |
#include "rcv.h" |
#include "extern.h" |
#include "extern.h" |
#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
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#include <errno.h> |
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static cc_t c_erase; /* Current erase char */ |
static cc_t c_erase; /* Current erase char */ |
static cc_t c_kill; /* Current kill char */ |
static cc_t c_kill; /* Current kill char */ |
static sigjmp_buf rewrite; /* Place to go when continued */ |
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static sigjmp_buf intjmp; /* Place to go when interrupted */ |
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#ifndef TIOCSTI |
#ifndef TIOCSTI |
static int ttyset; /* We must now do erase/kill */ |
static int ttyset; /* We must now do erase/kill */ |
#endif |
#endif |
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static volatile sig_atomic_t ttysignal; /* Interrupted by a signal? */ |
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/* |
/* |
* Read all relevant header fields. |
* Read all relevant header fields. |
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int gflags; |
int gflags; |
{ |
{ |
struct termios ttybuf; |
struct termios ttybuf; |
volatile sig_t saveint; |
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#ifndef TIOCSTI |
#ifndef TIOCSTI |
sig_t savequit; |
struct sigaction savequit; |
#else |
#else |
# ifdef TIOCEXT |
# ifdef TIOCEXT |
volatile int extproc; |
int extproc; |
int flag; |
int flag; |
# endif /* TIOCEXT */ |
# endif /* TIOCEXT */ |
#endif |
#endif |
sig_t savetstp; |
struct sigaction savetstp; |
sig_t savettou; |
struct sigaction savettou; |
sig_t savettin; |
struct sigaction savettin; |
volatile int errs = 0; |
struct sigaction act; |
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char *s; |
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int error; |
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savetstp = signal(SIGTSTP, SIG_DFL); |
sigemptyset(&act.sa_mask); |
savettou = signal(SIGTTOU, SIG_DFL); |
act.sa_flags = SA_RESTART; |
savettin = signal(SIGTTIN, SIG_DFL); |
act.sa_handler = SIG_DFL; |
errs = 0; |
(void)sigaction(SIGTSTP, &act, &savetstp); |
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(void)sigaction(SIGTTOU, &act, &savettou); |
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(void)sigaction(SIGTTIN, &act, &savettin); |
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error = 1; |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
ttyset = 0; |
ttyset = 0; |
#endif |
#endif |
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#ifndef TIOCSTI |
#ifndef TIOCSTI |
ttybuf.c_cc[VERASE] = 0; |
ttybuf.c_cc[VERASE] = 0; |
ttybuf.c_cc[VKILL] = 0; |
ttybuf.c_cc[VKILL] = 0; |
if ((saveint = signal(SIGINT, SIG_IGN)) == SIG_DFL) |
act.sa_handler = SIG_IGN; |
(void)signal(SIGINT, SIG_DFL); |
if (sigaction(SIGQUIT, &act, &savequit) == 0 && |
if ((savequit = signal(SIGQUIT, SIG_IGN)) == SIG_DFL) |
savequit.sa_handler == SIG_DFL) |
(void)signal(SIGQUIT, SIG_DFL); |
(void)sigaction(SIGQUIT, &savequit, NULL); |
#else |
#else |
# ifdef TIOCEXT |
# ifdef TIOCEXT |
extproc = ((ttybuf.c_lflag & EXTPROC) ? 1 : 0); |
extproc = ((ttybuf.c_lflag & EXTPROC) ? 1 : 0); |
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warn("TIOCEXT: off"); |
warn("TIOCEXT: off"); |
} |
} |
# endif /* TIOCEXT */ |
# endif /* TIOCEXT */ |
if (sigsetjmp(intjmp, 1)) { |
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errs = SIGINT; |
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goto out; |
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} |
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saveint = signal(SIGINT, ttyint); |
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#endif |
#endif |
if (gflags & GTO) { |
if (gflags & GTO) { |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
if (!ttyset && hp->h_to != NIL) |
if (!ttyset && hp->h_to != NIL) |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
#endif |
#endif |
hp->h_to = |
s = readtty("To: ", detract(hp->h_to, 0)); |
extract(readtty("To: ", detract(hp->h_to, 0)), GTO); |
if (s == NULL) |
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goto out; |
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hp->h_to = extract(s, GTO); |
} |
} |
if (gflags & GSUBJECT) { |
if (gflags & GSUBJECT) { |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
if (!ttyset && hp->h_subject != NULL) |
if (!ttyset && hp->h_subject != NULL) |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
#endif |
#endif |
hp->h_subject = readtty("Subject: ", hp->h_subject); |
s = readtty("Subject: ", hp->h_subject); |
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if (s == NULL) |
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goto out; |
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hp->h_subject = s; |
} |
} |
if (gflags & GCC) { |
if (gflags & GCC) { |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
if (!ttyset && hp->h_cc != NIL) |
if (!ttyset && hp->h_cc != NIL) |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
#endif |
#endif |
hp->h_cc = |
s = readtty("Cc: ", detract(hp->h_cc, 0)); |
extract(readtty("Cc: ", detract(hp->h_cc, 0)), GCC); |
if (s == NULL) |
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goto out; |
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hp->h_cc = extract(s, GCC); |
} |
} |
if (gflags & GBCC) { |
if (gflags & GBCC) { |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
if (!ttyset && hp->h_bcc != NIL) |
if (!ttyset && hp->h_bcc != NIL) |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
ttyset++, tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
#endif |
#endif |
hp->h_bcc = |
s = readtty("Bcc: ", detract(hp->h_bcc, 0)); |
extract(readtty("Bcc: ", detract(hp->h_bcc, 0)), GBCC); |
if (s == NULL) |
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goto out; |
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hp->h_bcc = extract(s, GBCC); |
} |
} |
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error = 0; |
out: |
out: |
(void)signal(SIGTSTP, savetstp); |
(void)sigaction(SIGTSTP, &savetstp, NULL); |
(void)signal(SIGTTOU, savettou); |
(void)sigaction(SIGTTOU, &savettou, NULL); |
(void)signal(SIGTTIN, savettin); |
(void)sigaction(SIGTTIN, &savettin, NULL); |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
ttybuf.c_cc[VERASE] = c_erase; |
ttybuf.c_cc[VERASE] = c_erase; |
ttybuf.c_cc[VKILL] = c_kill; |
ttybuf.c_cc[VKILL] = c_kill; |
if (ttyset) |
if (ttyset) |
tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
tcsetattr(fileno(stdin), TCSADRAIN, &ttybuf); |
(void)signal(SIGQUIT, savequit); |
(void)sigaction(SIGQUIT, &savequit, NULL); |
#else |
#else |
# ifdef TIOCEXT |
# ifdef TIOCEXT |
if (extproc) { |
if (extproc) { |
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} |
} |
# endif /* TIOCEXT */ |
# endif /* TIOCEXT */ |
#endif |
#endif |
(void)signal(SIGINT, saveint); |
return(error); |
return(errs); |
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} |
} |
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/* |
/* |
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readtty(pr, src) |
readtty(pr, src) |
char pr[], src[]; |
char pr[], src[]; |
{ |
{ |
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struct sigaction act, oact; |
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sigset_t oset; |
char ch, canonb[BUFSIZ]; |
char ch, canonb[BUFSIZ]; |
volatile int c; |
char *cp, *cp2; |
char *cp, * volatile cp2; |
int c; |
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fputs(pr, stdout); |
fputs(pr, stdout); |
fflush(stdout); |
fflush(stdout); |
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while (cp2 < canonb + BUFSIZ) |
while (cp2 < canonb + BUFSIZ) |
*cp2++ = 0; |
*cp2++ = 0; |
cp2 = cp; |
cp2 = cp; |
if (sigsetjmp(rewrite, 1)) |
sigemptyset(&act.sa_mask); |
goto redo; |
act.sa_flags = 0; /* Note: will not restart syscalls */ |
(void)signal(SIGTSTP, ttystop); |
act.sa_handler = ttyint; |
(void)signal(SIGTTOU, ttystop); |
(void)sigaction(SIGINT, &act, &oact); |
(void)signal(SIGTTIN, ttystop); |
act.sa_handler = ttystop; |
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(void)sigaction(SIGTSTP, &act, NULL); |
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(void)sigaction(SIGTTOU, &act, NULL); |
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(void)sigaction(SIGTTIN, &act, NULL); |
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(void)sigprocmask(SIG_UNBLOCK, &intset, &oset); |
clearerr(stdin); |
clearerr(stdin); |
while (cp2 < canonb + BUFSIZ) { |
while (cp2 < canonb + BUFSIZ) { |
c = getc(stdin); |
c = getc(stdin); |
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switch (ttysignal) { |
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case SIGINT: |
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ttysignal = 0; |
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cp2 = NULL; |
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c = EOF; |
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/* FALLTHROUGH */ |
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case 0: |
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break; |
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default: |
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ttysignal = 0; |
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goto redo; |
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} |
if (c == EOF || c == '\n') |
if (c == EOF || c == '\n') |
break; |
break; |
*cp2++ = c; |
*cp2++ = c; |
} |
} |
*cp2 = 0; |
act.sa_handler = SIG_DFL; |
(void)signal(SIGTSTP, SIG_DFL); |
sigemptyset(&act.sa_mask); |
(void)signal(SIGTTOU, SIG_DFL); |
act.sa_flags = SA_RESTART; |
(void)signal(SIGTTIN, SIG_DFL); |
(void)sigprocmask(SIG_SETMASK, &oset, NULL); |
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(void)sigaction(SIGTSTP, &act, NULL); |
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(void)sigaction(SIGTTOU, &act, NULL); |
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(void)sigaction(SIGTTIN, &act, NULL); |
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(void)sigaction(SIGTTIN, &oact, NULL); |
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if (cp2 == NULL) |
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return(NULL); /* user hit ^C */ |
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*cp2 = '\0'; |
if (c == EOF && ferror(stdin)) { |
if (c == EOF && ferror(stdin)) { |
redo: |
redo: |
cp = strlen(canonb) > 0 ? canonb : NULL; |
cp = strlen(canonb) > 0 ? canonb : NULL; |
clearerr(stdin); |
clearerr(stdin); |
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/* XXX - make iterative, not recursive */ |
return(readtty(pr, cp)); |
return(readtty(pr, cp)); |
} |
} |
#ifndef TIOCSTI |
#ifndef TIOCSTI |
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*cp2 = '\0'; |
*cp2 = '\0'; |
#endif |
#endif |
if (equal("", canonb)) |
if (equal("", canonb)) |
return(NULL); |
return(""); |
return(savestr(canonb)); |
return(savestr(canonb)); |
} |
} |
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ttystop(s) |
ttystop(s) |
int s; |
int s; |
{ |
{ |
sig_t old_action = signal(s, SIG_DFL); |
struct sigaction act, oact; |
sigset_t nset; |
sigset_t nset; |
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int save_errno; |
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/* |
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* Save old handler and set to default. |
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* Unblock receipt of 's' and then resend it. |
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*/ |
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save_errno = errno; |
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(void)sigemptyset(&act.sa_mask); |
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act.sa_flags = SA_RESTART; |
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act.sa_handler = SIG_DFL; |
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(void)sigaction(s, &act, &oact); |
(void)sigemptyset(&nset); |
(void)sigemptyset(&nset); |
(void)sigaddset(&nset, s); |
(void)sigaddset(&nset, s); |
(void)sigprocmask(SIG_UNBLOCK, &nset, NULL); |
(void)sigprocmask(SIG_UNBLOCK, &nset, NULL); |
(void)kill(0, s); |
(void)kill(0, s); |
(void)sigprocmask(SIG_BLOCK, &nset, NULL); |
(void)sigprocmask(SIG_BLOCK, &nset, NULL); |
(void)signal(s, old_action); |
(void)sigaction(s, &oact, NULL); |
siglongjmp(rewrite, 1); |
ttysignal = s; |
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errno = save_errno; |
} |
} |
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/*ARGSUSED*/ |
/*ARGSUSED*/ |
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ttyint(s) |
ttyint(s) |
int s; |
int s; |
{ |
{ |
siglongjmp(intjmp, 1); |
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ttysignal = s; |
} |
} |