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-rw-r--r--util/term/term.c283
1 files changed, 143 insertions, 140 deletions
diff --git a/util/term/term.c b/util/term/term.c
index 8a95480b1..597966159 100644
--- a/util/term/term.c
+++ b/util/term/term.c
@@ -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;
-
- 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);
-
+ int ch, s, ret;
+ char *host, *port, *endp;
+ struct addrinfo hints;
+ socklen_t len;
+
+ 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 == 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;
-
- /* Setup Network FD */
- pfd[0].fd = nfd;
- pfd[0].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");
- }
+ 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 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 (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[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 (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;
- }
- }
+ 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;
-
- 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;
- }
+ 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;
}
- 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);
}
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