m5term: assume localhost if host name not provided.

util/term/term.c:
    Reindent.
util/term/term.c:
    Assume localhost if only port number is given on command line.

--HG--
extra : convert_revision : 768e61a56339a0795ca258cca788e9a2c20cbaae
This commit is contained in:
Steve Reinhardt 2006-10-19 21:42:30 -07:00
parent 780aa0a0eb
commit 3772e4fc97

View file

@ -60,46 +60,49 @@ void usage(int);
int
main(int argc, char *argv[])
{
int ch, s, ret;
char *host, *port, *endp;
struct addrinfo hints;
socklen_t len;
int ch, s, ret;
char *host, *port, *endp;
struct addrinfo hints;
socklen_t len;
ret = 1;
s = 0;
host = NULL;
port = NULL;
endp = NULL;
ret = 1;
s = 0;
host = NULL;
port = NULL;
endp = NULL;
strncpy(progname, argv[0], sizeof progname);
/* Cruft to make sure options are clean, and used properly. */
if (argc != 3 || !argv[1] || !argv[2])
usage(1);
strncpy(progname, argv[0], sizeof progname);
/* Cruft to make sure options are clean, and used properly. */
if (argc == 2) {
host = "localhost";
port = argv[1];
} else if (argc == 3) {
host = argv[1];
port = argv[2];
} else {
usage(1);
}
if (!isatty(STDIN_FILENO))
errx(1, "not attached to a terminal");
if (!isatty(STDIN_FILENO))
errx(1, "not attached to a terminal");
raw_term();
raw_term();
/* Initialize addrinfo structure */
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
/* Initialize addrinfo structure */
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
s = remote_connect(host, port, hints);
ret = 0;
readwrite(s);
s = remote_connect(host, port, hints);
ret = 0;
readwrite(s);
if (s)
close(s);
if (s)
close(s);
exit(ret);
exit(ret);
}
/*
@ -110,28 +113,28 @@ main(int argc, char *argv[])
int
remote_connect(char *host, char *port, struct addrinfo hints)
{
struct addrinfo *res, *res0;
int s, error;
struct addrinfo *res, *res0;
int s, error;
if ((error = getaddrinfo(host, port, &hints, &res)))
errx(1, "getaddrinfo: %s", gai_strerror(error));
if ((error = getaddrinfo(host, port, &hints, &res)))
errx(1, "getaddrinfo: %s", gai_strerror(error));
res0 = res;
do {
if ((s = socket(res0->ai_family, res0->ai_socktype,
res0->ai_protocol)) < 0)
continue;
res0 = res;
do {
if ((s = socket(res0->ai_family, res0->ai_socktype,
res0->ai_protocol)) < 0)
continue;
if (connect(s, res0->ai_addr, res0->ai_addrlen) == 0)
break;
if (connect(s, res0->ai_addr, res0->ai_addrlen) == 0)
break;
close(s);
s = -1;
} while ((res0 = res0->ai_next) != NULL);
close(s);
s = -1;
} while ((res0 = res0->ai_next) != NULL);
freeaddrinfo(res);
freeaddrinfo(res);
return (s);
return (s);
}
/*
@ -141,79 +144,79 @@ remote_connect(char *host, char *port, struct addrinfo hints)
void
readwrite(int nfd)
{
struct pollfd pfd[2];
char buf[BUFSIZ];
int wfd = fileno(stdin), n, ret;
int lfd = fileno(stdout);
int escape = 0;
struct pollfd pfd[2];
char buf[BUFSIZ];
int wfd = fileno(stdin), n, ret;
int lfd = fileno(stdout);
int escape = 0;
/* Setup Network FD */
pfd[0].fd = nfd;
pfd[0].events = POLLIN;
/* Setup Network FD */
pfd[0].fd = nfd;
pfd[0].events = POLLIN;
/* Setup STDIN FD */
pfd[1].fd = wfd;
pfd[1].events = POLLIN;
/* Setup STDIN FD */
pfd[1].fd = wfd;
pfd[1].events = POLLIN;
while (pfd[0].fd != -1) {
if ((n = poll(pfd, 2, -1)) < 0) {
close(nfd);
err(1, "Polling Error");
}
if (n == 0)
return;
if (pfd[0].revents & POLLIN) {
if ((n = read(nfd, buf, sizeof(buf))) < 0)
return;
else if (n == 0) {
shutdown(nfd, SHUT_RD);
pfd[0].fd = -1;
pfd[0].events = 0;
} else {
if ((ret = atomicio(write, lfd, buf, n)) != n)
return;
}
}
if (pfd[1].revents & POLLIN) {
if ((n = read(wfd, buf, sizeof(buf))) < 0)
return;
else if (n == 0) {
shutdown(nfd, SHUT_WR);
pfd[1].fd = -1;
pfd[1].events = 0;
} else {
if (escape) {
char buf2[] = "~";
if (*buf == '.') {
printf("quit!\n");
return;
}
escape = 0;
if (*buf != '~' &&
(ret = atomicio(write, nfd, buf2, 1)) != n)
return;
} else {
escape = (*buf == '~');
if (escape)
continue;
}
if ((ret = atomicio(write, nfd, buf, n)) != n)
return;
}
}
while (pfd[0].fd != -1) {
if ((n = poll(pfd, 2, -1)) < 0) {
close(nfd);
err(1, "Polling Error");
}
if (n == 0)
return;
if (pfd[0].revents & POLLIN) {
if ((n = read(nfd, buf, sizeof(buf))) < 0)
return;
else if (n == 0) {
shutdown(nfd, SHUT_RD);
pfd[0].fd = -1;
pfd[0].events = 0;
} else {
if ((ret = atomicio(write, lfd, buf, n)) != n)
return;
}
}
if (pfd[1].revents & POLLIN) {
if ((n = read(wfd, buf, sizeof(buf))) < 0)
return;
else if (n == 0) {
shutdown(nfd, SHUT_WR);
pfd[1].fd = -1;
pfd[1].events = 0;
} else {
if (escape) {
char buf2[] = "~";
if (*buf == '.') {
printf("quit!\n");
return;
}
escape = 0;
if (*buf != '~' &&
(ret = atomicio(write, nfd, buf2, 1)) != n)
return;
} else {
escape = (*buf == '~');
if (escape)
continue;
}
if ((ret = atomicio(write, nfd, buf, n)) != n)
return;
}
}
}
}
void
usage(int ret)
{
fprintf(stderr, "usage: %s hostname port\n", progname);
if (ret)
exit(1);
fprintf(stderr, "usage: %s hostname port\n", progname);
if (ret)
exit(1);
}
/*
@ -247,22 +250,22 @@ usage(int ret)
ssize_t
atomicio(ssize_t (*f) (), int fd, void *_s, size_t n)
{
char *s = _s;
ssize_t res, pos = 0;
char *s = _s;
ssize_t res, pos = 0;
while (n > pos) {
res = (f) (fd, s + pos, n - pos);
switch (res) {
case -1:
if (errno == EINTR || errno == EAGAIN)
continue;
case 0:
return (res);
default:
pos += res;
}
while (n > pos) {
res = (f) (fd, s + pos, n - pos);
switch (res) {
case -1:
if (errno == EINTR || errno == EAGAIN)
continue;
case 0:
return (res);
default:
pos += res;
}
return (pos);
}
return (pos);
}
/*
@ -284,28 +287,28 @@ atomicio(ssize_t (*f) (), int fd, void *_s, size_t n)
void
raw_term()
{
struct termios ios;
struct termios ios;
if (tcgetattr(STDIN_FILENO, &ios) < 0)
errx(1, "tcgetagttr\n");
if (tcgetattr(STDIN_FILENO, &ios) < 0)
errx(1, "tcgetagttr\n");
memcpy(&saved_ios, &ios, sizeof(struct termios));
memcpy(&saved_ios, &ios, sizeof(struct termios));
ios.c_iflag &= ~(ISTRIP|ICRNL|IGNCR|ICRNL|IXOFF|IXON);
ios.c_oflag &= ~(OPOST);
ios.c_oflag &= (ONLCR);
ios.c_lflag &= ~(ISIG|ICANON|ECHO);
ios.c_cc[VMIN] = 1;
ios.c_cc[VTIME] = 0;
ios.c_iflag &= ~(ISTRIP|ICRNL|IGNCR|ICRNL|IXOFF|IXON);
ios.c_oflag &= ~(OPOST);
ios.c_oflag &= (ONLCR);
ios.c_lflag &= ~(ISIG|ICANON|ECHO);
ios.c_cc[VMIN] = 1;
ios.c_cc[VTIME] = 0;
if (tcsetattr(STDIN_FILENO, TCSANOW, &ios) < 0)
errx(1, "tcsetattr\n");
if (tcsetattr(STDIN_FILENO, TCSANOW, &ios) < 0)
errx(1, "tcsetattr\n");
atexit(restore_term);
atexit(restore_term);
}
void
restore_term()
{
tcsetattr(STDIN_FILENO, TCSANOW, &saved_ios);
tcsetattr(STDIN_FILENO, TCSANOW, &saved_ios);
}