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/* -*- c-basic-offset:2; tab-width:2; indent-tabs-mode:nil -*- */
#include <stdio.h>
#include <stdlib.h> /* free */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h> /* write */
#include <string.h> /* memset */
#include <sys/socket.h>
#include <sys/un.h>
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#endif
/* --- static variables --- */
static char *na_options[] = {
"-@/--screens", "-R/--fsrange", "-Y/--decsp", "-c/--cp932", "-i/--xim", "-j/--daemon",
" --depth", " --maxptys", " --keepalive", " --metaprefix", " --deffont",
};
/* --- static functions --- */
static void version(void) { printf("mlclient(x)\n"); }
static void help(int is_mlclientx) {
int count;
printf("mlclient(x) [prefix options] [options]\n\n");
printf("prefix options:\n");
printf(" /dev/...: specify pty with which a new window is opened.\n\n");
printf("options:\n");
printf(" -P/--ptylist: print pty list.\n");
printf(" --kill: kill mlterm server.\n");
if (is_mlclientx) {
printf(" --hsep=value: open new pty in horizontally split screen.\n");
printf(" --vsep=value: open new pty in vertically split screen.\n");
}
printf(
" (--ptylist and --kill options are available only if mlterm server is "
"alive.)\n\n");
printf(" N.A. options among those of mlterm.\n");
for (count = 0; count < sizeof(na_options) / sizeof(na_options[0]); count++) {
printf(" %s\n", na_options[count]);
}
if (is_mlclientx) {
printf(" ...and options related to window, font, color and appearance\n");
}
}
static int set_daemon_socket_path(struct sockaddr_un *addr) {
const char subdir[] = "/.config/mlterm";
const char *dir;
size_t len;
struct stat st;
if ((dir = getenv("HOME")) == NULL || '/' != dir[0]) {
return 0;
}
if ((len = strlen(dir) + sizeof(subdir) + 1 + 6) <= sizeof(addr->sun_path)) {
sprintf(addr->sun_path, "%s%s", dir, subdir);
if (stat(addr->sun_path, &st) == 0) {
strcat(addr->sun_path, "/socket");
return 1;
}
}
if (len - 7 > sizeof(addr->sun_path)) {
return 0;
}
sprintf(addr->sun_path, "%s/.mlterm/socket", dir);
return 1;
}
static int write_argv(int argc, char **argv, int fd) {
char *p;
int count;
/* Extract program name. */
if ((p = strrchr(argv[0], '/'))) {
argv[0] = p + 1;
}
/* Don't quote argv[0] by "" for "\x1b]5379;mlclient" sequence. */
write(fd, argv[0], strlen(argv[0]));
if (argc == 1) {
return 1;
}
for (count = 1; count < argc; count++) {
p = argv[count];
write(fd, " \"", 2);
while (*p) {
if (*p == '\"') {
write(fd, "\\\"", 2);
}
#if 0
else if (*p == '=') {
/*
* mlterm 3.0.6 or before doesn't accept '=' in
* "\x1b]5379;mlclient" sequence.
*/
write(fd, "\" \"", 3);
}
#endif
else {
write(fd, p, 1);
}
p++;
}
write(fd, "\"", 1);
}
return 1;
}
/* --- global functions --- */
int main(int argc, char **argv) {
int count;
char *p;
for (count = 1; count < argc; count++) {
p = argv[count];
if (*p == '-') {
p++;
if (*p == '-') {
/* long option */
p++;
}
if (strcmp(p, "help") == 0 || strcmp(p, "h") == 0) {
help(strstr(argv[0], "mlclientx") != NULL);
return 0;
} else if (strcmp(p, "version") == 0 || strcmp(p, "v") == 0) {
version();
return 0;
} else if (strcmp(p, "e") == 0) {
/* argvs after -e are NOT options for mlterm */
break;
}
}
}
if (strstr(argv[0], "mlclientx") == NULL) {
int fd;
struct sockaddr_un servaddr;
if ((fd = socket(AF_LOCAL, SOCK_STREAM, 0)) != -1) {
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sun_family = AF_LOCAL;
if (set_daemon_socket_path(&servaddr)) {
if (connect(fd, (struct sockaddr*)&servaddr, sizeof(servaddr)) != -1) {
char buf[256];
ssize_t len;
write_argv(argc, argv, fd);
write(fd, "\n", 1);
while ((len = read(fd, buf, sizeof(buf))) > 0) {
write(STDERR_FILENO, buf, len);
if (len == 16 && strncmp(buf, "Error happened.\n", 16) == 0) {
close(fd);
goto config_proto;
}
}
close(fd);
return 0;
}
}
close(fd);
}
fprintf(stderr, "Mlterm server is dead.\n");
}
config_proto:
fprintf(stderr, "Retrying by configuration protocol.\n");
write(STDOUT_FILENO, "\x1b]5379;", 7);
write_argv(argc, argv, STDOUT_FILENO);
write(STDOUT_FILENO, "\x07", 1);
return 0;
}
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