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Change command format.

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This commit is contained in:
Nicholas Marriott
2007-08-27 13:45:26 +00:00
parent 6e210bb005
commit 04f4e4219b
6 changed files with 337 additions and 262 deletions
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292
tmux.c
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@ -1,4 +1,4 @@
/* $Id: tmux.c,v 1.2 2007-07-25 23:13:18 nicm Exp $ */
/* $Id: tmux.c,v 1.3 2007-08-27 13:45:26 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -40,13 +40,15 @@
const char *malloc_options = "AFGJPX";
#endif
void op_new(char *, struct winsize *);
void op_attach(char *, struct winsize *);
int connect_server(void);
int process_server(struct buffer *);
int process_local(struct buffer *, struct buffer *);
int process_server(char **);
int process_local(void);
void sighandler(int);
__dead void usage(void);
__dead void main_list(char *);
void process_list(struct buffer *, const char *);
void process_list(const char *);
/* SIGWINCH received flag. */
volatile sig_atomic_t sigwinch;
@ -60,11 +62,21 @@ int debug_level;
/* Path to server socket. */
char socket_path[MAXPATHLEN];
/* Server socket and buffers. */
int server_fd = -1;
struct buffer *server_in;
struct buffer *server_out;
/* Local socket and buffers. */
int local_fd = -1;
struct buffer *local_in;
struct buffer *local_out;
__dead void
usage(void)
{
fprintf(stderr,
"usage: %s [-v] [-n name] [-s path]\n", __progname);
"usage: %s [-v] [-n name] [-s path] command\n", __progname);
exit(1);
}
@ -87,13 +99,12 @@ sighandler(int sig)
int
main(int argc, char **argv)
{
int opt, srv_fd, loc_fd, mode, listf, n;
char *path, name[MAXNAMELEN];
int opt, mode, n;
char *path, *error, name[MAXNAMELEN];
FILE *f;
struct buffer *srv_in, *srv_out, *loc_in, *loc_out;
enum op op;
struct pollfd pfds[2];
struct hdr hdr;
struct identify_data id;
struct size_data sd;
struct winsize ws;
struct sigaction act;
@ -101,13 +112,9 @@ main(int argc, char **argv)
*name = '\0';
path = NULL;
listf = 0;
while ((opt = getopt(argc, argv, "ln:s:v?")) != EOF) {
while ((opt = getopt(argc, argv, "n:s:v?")) != EOF) {
switch (opt) {
case 'l':
listf = 1;
break;
case 'n':
if (strlcpy(name, optarg, sizeof name) >= sizeof name)
errx(1, "name too long");
@ -125,7 +132,17 @@ main(int argc, char **argv)
}
argc -= optind;
argv += optind;
if (argc != 0)
if (argc != 1)
usage();
/* Determine command. */
if (strncmp(argv[0], "list", strlen(argv[0])) == 0)
op = OP_LIST;
else if (strncmp(argv[0], "new", strlen(argv[0])) == 0)
op = OP_NEW;
else if (strncmp(argv[0], "attach", strlen(argv[0])) == 0)
op = OP_ATTACH;
else
usage();
/* Sort out socket path. */
@ -137,18 +154,33 @@ main(int argc, char **argv)
err(1, "realpath");
xfree(path);
/* Skip to list function if listing. */
if (listf) {
if (*name == '\0')
main_list(NULL);
else
main_list(name);
/* Start server if necessary. */
if (stat(socket_path, &sb) != 0) {
if (errno != ENOENT)
err(1, "%s", socket_path);
else if (op != OP_LIST) {
if (server_start() != 0)
errx(1, "couldn't start server");
sleep(1);
}
} else {
if (!S_ISSOCK(sb.st_mode))
errx(1, "%s: not a socket", socket_path);
}
/* And fill name. */
if (*name == '\0')
xsnprintf(name, sizeof name, "s-%lu", (u_long) getpid());
/* Connect to server. */
if ((server_fd = connect_server()) == -1)
errx(1, "couldn't find server");
if ((mode = fcntl(server_fd, F_GETFL)) == -1)
err(1, "fcntl");
if (fcntl(server_fd, F_SETFL, mode|O_NONBLOCK) == -1)
err(1, "fcntl");
server_in = buffer_create(BUFSIZ);
server_out = buffer_create(BUFSIZ);
if (op == OP_LIST)
main_list(name);
/* Check stdin/stdout. */
if (!isatty(STDIN_FILENO))
errx(1, "stdin is not a tty");
@ -181,42 +213,21 @@ main(int argc, char **argv)
if (sigaction(SIGCHLD, &act, NULL) != 0)
err(1, "sigaction");
/* Start server if necessary. */
if (stat(socket_path, &sb) != 0) {
if (errno != ENOENT)
err(1, "%s", socket_path);
else {
if (server_start() != 0)
errx(1, "couldn't start server");
sleep(1);
}
} else {
if (!S_ISSOCK(sb.st_mode))
errx(1, "%s: not a socket", socket_path);
}
/* Connect to server. */
if ((srv_fd = connect_server()) == -1)
errx(1, "couldn't find server");
if ((mode = fcntl(srv_fd, F_GETFL)) == -1)
err(1, "fcntl");
if (fcntl(srv_fd, F_SETFL, mode|O_NONBLOCK) == -1)
err(1, "fcntl");
srv_in = buffer_create(BUFSIZ);
srv_out = buffer_create(BUFSIZ);
/* Find window size. */
if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1)
err(1, "ioctl(TIOCGWINSZ)");
/* Send initial data. */
hdr.code = MSG_IDENTIFY;
hdr.size = sizeof id;
buffer_write(srv_out, &hdr, sizeof hdr);
strlcpy(id.name, name, sizeof id.name);
id.sx = ws.ws_col;
id.sy = ws.ws_row;
buffer_write(srv_out, &id, hdr.size);
switch (op) {
case OP_NEW:
op_new(name, &ws);
break;
case OP_ATTACH:
op_attach(name, &ws);
break;
default:
fatalx("unknown op");
}
/* Start logging to file. */
if (debug_level > 0) {
@ -226,39 +237,36 @@ main(int argc, char **argv)
log_open(f, LOG_USER, debug_level);
xfree(path);
}
/* Initialise terminal. */
loc_fd = local_init(&loc_in, &loc_out);
setproctitle("client (%s)", name);
/* Main loop. */
n = 0;
while (!sigterm) {
/* Handle SIGWINCH if necessary. */
if (sigwinch) {
if (local_fd != -1 && sigwinch) {
if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1)
fatal("ioctl failed");
hdr.code = MSG_SIZE;
hdr.type = MSG_SIZE;
hdr.size = sizeof sd;
buffer_write(srv_out, &hdr, sizeof hdr);
buffer_write(server_out, &hdr, sizeof hdr);
sd.sx = ws.ws_col;
sd.sy = ws.ws_row;
buffer_write(srv_out, &sd, hdr.size);
buffer_write(server_out, &sd, hdr.size);
sigwinch = 0;
}
/* Set up pollfds. */
pfds[0].fd = srv_fd;
pfds[0].fd = server_fd;
pfds[0].events = POLLIN;
if (BUFFER_USED(srv_out) > 0)
if (BUFFER_USED(server_out) > 0)
pfds[0].events |= POLLOUT;
pfds[1].fd = loc_fd;
pfds[1].fd = local_fd;
pfds[1].events = POLLIN;
if (BUFFER_USED(loc_out) > 0)
if (local_fd != -1 && BUFFER_USED(local_out) > 0)
pfds[1].events |= POLLOUT;
/* Do the poll. */
if (poll(pfds, 2, INFTIM) == -1) {
if (errno == EAGAIN || errno == EINTR)
@ -267,9 +275,10 @@ main(int argc, char **argv)
}
/* Read/write from sockets. */
if (buffer_poll(&pfds[0], srv_in, srv_out) != 0)
if (buffer_poll(&pfds[0], server_in, server_out) != 0)
goto server_dead;
if (buffer_poll(&pfds[1], loc_in, loc_out) != 0)
if (local_fd != -1 &&
buffer_poll(&pfds[1], local_in, local_out) != 0)
fatalx("lost local socket");
/* Output flushed; pause if requested. */
@ -277,13 +286,17 @@ main(int argc, char **argv)
usleep(750000);
/* Process any data. */
if ((n = process_server(srv_in)) == -1)
if ((n = process_server(&error)) == -1)
break;
if (process_local(loc_in, srv_out) == -1)
if (process_local() == -1)
break;
}
local_done();
if (local_fd != -1)
local_done();
if (error != NULL)
errx(1, "%s", error);
if (!sigterm)
printf("[detached]\n");
@ -292,12 +305,47 @@ main(int argc, char **argv)
exit(0);
server_dead:
local_done();
if (local_fd != -1)
local_done();
printf("[lost server]\n");
exit(1);
}
/* New command. */
void
op_new(char *name, struct winsize *ws)
{
struct new_data data;
struct hdr hdr;
hdr.type = MSG_NEW;
hdr.size = sizeof data;
buffer_write(server_out, &hdr, sizeof hdr);
strlcpy(data.name, name, sizeof data.name);
data.sx = ws->ws_col;
data.sy = ws->ws_row;
buffer_write(server_out, &data, hdr.size);
}
/* Attach command. */
void
op_attach(char *name, struct winsize *ws)
{
struct attach_data data;
struct hdr hdr;
hdr.type = MSG_ATTACH;
hdr.size = sizeof data;
buffer_write(server_out, &hdr, sizeof hdr);
strlcpy(data.name, name, sizeof data.name);
data.sx = ws->ws_col;
data.sy = ws->ws_row;
buffer_write(server_out, &data, hdr.size);
}
/* Connect to server socket from PID. */
int
connect_server(void)
@ -323,21 +371,30 @@ connect_server(void)
/* Handle data from server. */
int
process_server(struct buffer *srv_in)
process_server(char **error)
{
struct hdr hdr;
*error = NULL;
for (;;) {
if (BUFFER_USED(srv_in) < sizeof hdr)
if (BUFFER_USED(server_in) < sizeof hdr)
break;
memcpy(&hdr, BUFFER_OUT(srv_in), sizeof hdr);
if (BUFFER_USED(srv_in) < (sizeof hdr) + hdr.size)
memcpy(&hdr, BUFFER_OUT(server_in), sizeof hdr);
if (BUFFER_USED(server_in) < (sizeof hdr) + hdr.size)
break;
buffer_remove(srv_in, sizeof hdr);
buffer_remove(server_in, sizeof hdr);
switch (hdr.code) {
switch (hdr.type) {
case MSG_READY:
if (hdr.size != 0) {
xasprintf(error, "%.*s",
(int) hdr.size, BUFFER_OUT(server_in));
return (-1);
}
local_fd = local_init(&local_in, &local_out);
break;
case MSG_OUTPUT:
local_output(srv_in, hdr.size);
local_output(server_in, hdr.size);
break;
case MSG_PAUSE:
if (hdr.size != 0)
@ -345,6 +402,8 @@ process_server(struct buffer *srv_in)
return (1);
case MSG_EXIT:
return (-1);
default:
fatalx("unexpected message");
}
}
@ -353,13 +412,16 @@ process_server(struct buffer *srv_in)
/* Handle data from local terminal. */
int
process_local(struct buffer *loc_in, struct buffer *srv_out)
process_local(void)
{
struct buffer *b;
struct hdr hdr;
size_t size;
int n, key;
if (local_fd == -1)
return (0);
n = 0;
b = buffer_create(BUFSIZ);
@ -368,10 +430,10 @@ process_local(struct buffer *loc_in, struct buffer *srv_out)
if (key == cmd_prefix) {
if ((key = local_key(NULL)) == KEYC_NONE) {
buffer_reverse_remove(loc_in, size);
buffer_reverse_remove(local_in, size);
break;
}
n = cmd_execute(key, srv_out);
n = cmd_execute(key, server_out);
break;
}
@ -385,10 +447,10 @@ process_local(struct buffer *loc_in, struct buffer *srv_out)
}
log_debug("transmitting %zu bytes of input", BUFFER_USED(b));
hdr.code = MSG_INPUT;
hdr.type = MSG_INPUT;
hdr.size = BUFFER_USED(b);
buffer_write(srv_out, &hdr, sizeof hdr);
buffer_write(srv_out, BUFFER_OUT(b), BUFFER_USED(b));
buffer_write(server_out, &hdr, sizeof hdr);
buffer_write(server_out, BUFFER_OUT(b), BUFFER_USED(b));
buffer_destroy(b);
return (n);
@ -400,41 +462,29 @@ main_list(char *name)
{
struct sessions_data sd;
struct windows_data wd;
int srv_fd, mode;
struct buffer *srv_in, *srv_out;
struct pollfd pfd;
struct hdr hdr;
/* Connect to server. */
if ((srv_fd = connect_server()) == -1)
errx(1, "couldn't find server");
if ((mode = fcntl(srv_fd, F_GETFL)) == -1)
err(1, "fcntl");
if (fcntl(srv_fd, F_SETFL, mode|O_NONBLOCK) == -1)
err(1, "fcntl");
srv_in = buffer_create(BUFSIZ);
srv_out = buffer_create(BUFSIZ);
/* Send query data. */
if (name == NULL) {
hdr.code = MSG_SESSIONS;
if (*name == '\0') {
hdr.type = MSG_SESSIONS;
hdr.size = sizeof sd;
buffer_write(srv_out, &hdr, sizeof hdr);
buffer_write(srv_out, &sd, hdr.size);
buffer_write(server_out, &hdr, sizeof hdr);
buffer_write(server_out, &sd, hdr.size);
} else {
hdr.code = MSG_WINDOWS;
hdr.type = MSG_WINDOWS;
hdr.size = sizeof wd;
buffer_write(srv_out, &hdr, sizeof hdr);
buffer_write(server_out, &hdr, sizeof hdr);
strlcpy(wd.name, name, sizeof wd.name);
buffer_write(srv_out, &wd, hdr.size);
buffer_write(server_out, &wd, hdr.size);
}
/* Main loop. */
for (;;) {
/* Set up pollfd. */
pfd.fd = srv_fd;
pfd.fd = server_fd;
pfd.events = POLLIN;
if (BUFFER_USED(srv_out) > 0)
if (BUFFER_USED(server_out) > 0)
pfd.events |= POLLOUT;
/* Do the poll. */
@ -445,16 +495,16 @@ main_list(char *name)
}
/* Read/write from sockets. */
if (buffer_poll(&pfd, srv_in, srv_out) != 0)
if (buffer_poll(&pfd, server_in, server_out) != 0)
errx(1, "lost server");
/* Process data. */
process_list(srv_in, name);
process_list(name);
}
}
void
process_list(struct buffer *srv_in, const char *name)
process_list(const char *name)
{
struct sessions_data sd;
struct sessions_entry se;
@ -464,25 +514,25 @@ process_list(struct buffer *srv_in, const char *name)
char *tim;
for (;;) {
if (BUFFER_USED(srv_in) < sizeof hdr)
if (BUFFER_USED(server_in) < sizeof hdr)
break;
memcpy(&hdr, BUFFER_OUT(srv_in), sizeof hdr);
if (BUFFER_USED(srv_in) < (sizeof hdr) + hdr.size)
memcpy(&hdr, BUFFER_OUT(server_in), sizeof hdr);
if (BUFFER_USED(server_in) < (sizeof hdr) + hdr.size)
break;
buffer_remove(srv_in, sizeof hdr);
buffer_remove(server_in, sizeof hdr);
switch (hdr.code) {
switch (hdr.type) {
case MSG_SESSIONS:
if (hdr.size < sizeof sd)
errx(1, "bad MSG_SESSIONS size");
buffer_read(srv_in, &sd, sizeof sd);
buffer_read(server_in, &sd, sizeof sd);
hdr.size -= sizeof sd;
if (sd.sessions == 0 && hdr.size == 0)
exit(0);
if (hdr.size < sd.sessions * sizeof se)
errx(1, "bad MSG_SESSIONS size");
while (sd.sessions-- > 0) {
buffer_read(srv_in, &se, sizeof se);
buffer_read(server_in, &se, sizeof se);
tim = ctime(&se.tim);
*strchr(tim, '\n') = '\0';
printf("%s: %u windows (created %s)\n",
@ -492,14 +542,14 @@ process_list(struct buffer *srv_in, const char *name)
case MSG_WINDOWS:
if (hdr.size < sizeof wd)
errx(1, "bad MSG_WINDOWS size");
buffer_read(srv_in, &wd, sizeof wd);
buffer_read(server_in, &wd, sizeof wd);
hdr.size -= sizeof wd;
if (wd.windows == 0 && hdr.size == 0)
errx(1, "session \"%s\" not found", name);
if (hdr.size < wd.windows * sizeof we)
errx(1, "bad MSG_WINDOWS size");
while (wd.windows-- > 0) {
buffer_read(srv_in, &we, sizeof we);
buffer_read(server_in, &we, sizeof we);
if (*we.title != '\0') {
printf("%u: %s \"%s\" (%s)\n",
we.idx, we.name, we.title, we.tty);
@ -509,6 +559,8 @@ process_list(struct buffer *srv_in, const char *name)
}
}
exit(0);
default:
fatalx("unexpected message");
}
}
}