612 lines
11 KiB
C
612 lines
11 KiB
C
/*-
|
|
* SPDX-License-Identifier: MIT-open-group
|
|
*
|
|
* Copyright (c) 1991-1994 Sony Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL SONY CORPORATION BE LIABLE FOR ANY CLAIM,
|
|
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
|
|
* THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name of Sony Corporation
|
|
* shall not be used in advertising or otherwise to promote the sale, use
|
|
* or other dealings in this Software without prior written authorization
|
|
* from Sony Corporation.
|
|
*/
|
|
|
|
#include "sj_sysvdef.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <sys/un.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include <errno.h>
|
|
#include <netdb.h>
|
|
#include <setjmp.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "sj_kcnv.h"
|
|
|
|
#ifdef SVR4
|
|
#define signal sigset
|
|
#endif
|
|
|
|
#if defined(__FD_SET) && !defined(FD_SET)
|
|
# define FD_SET __FD_SET
|
|
# define FD_ZERO __FD_ZERO
|
|
# define FD_CLR __FD_CLR
|
|
# define FD_ISSET __FD_ISSET
|
|
#endif
|
|
|
|
#ifndef SOMAXCONN
|
|
# define SOMAXCONN 5
|
|
#endif
|
|
|
|
int client_num = 0;
|
|
Client *client = NULL;
|
|
Client *cur_client;
|
|
|
|
int maxfds = 0;
|
|
#ifdef SVR4
|
|
struct pollfd poll_fds[_NFILE];
|
|
#else
|
|
fd_set fds_org = { 0 };
|
|
#endif
|
|
jmp_buf client_dead;
|
|
int client_fd;
|
|
|
|
extern char *socket_name;
|
|
extern char *port_name;
|
|
extern int port_number;
|
|
extern int max_client;
|
|
|
|
static int fd_inet = -1;
|
|
static int fd_unix = -1;
|
|
|
|
static char putbuf[BUFSIZ];
|
|
static char getbuf[BUFSIZ];
|
|
static int putpos = 0;
|
|
static int buflen = 0;
|
|
static int getpos = 0;
|
|
|
|
void
|
|
socket_init(void)
|
|
{
|
|
#ifdef SVR4
|
|
int i;
|
|
|
|
for (i = 0; i < _NFILE; i++) {
|
|
poll_fds[i].fd = -1;
|
|
poll_fds[i].events = 0;
|
|
poll_fds[i].revents = 0;
|
|
}
|
|
#else
|
|
FD_ZERO(&fds_org);
|
|
#endif
|
|
client_num = 0;
|
|
maxfds = 0;
|
|
}
|
|
|
|
static void
|
|
set_fd(int fd)
|
|
{
|
|
#ifdef SVR4
|
|
poll_fds[maxfds].fd = fd;
|
|
poll_fds[maxfds].events = POLLIN;
|
|
maxfds++;
|
|
#else
|
|
FD_SET(fd, &fds_org);
|
|
if (fd >= maxfds)
|
|
maxfds = fd + 1;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
clr_fd(int fd)
|
|
{
|
|
#ifdef SVR4
|
|
int i, j;
|
|
|
|
for (i = 0; i < maxfds; i++) {
|
|
if (poll_fds[i].fd == fd) {
|
|
maxfds--;
|
|
for (j = i; j < maxfds; j++) {
|
|
poll_fds[j].fd = poll_fds[j + 1].fd;
|
|
poll_fds[j].events = poll_fds[j + 1].events;
|
|
poll_fds[j].revents = poll_fds[j + 1].revents;
|
|
}
|
|
poll_fds[j].fd = -1;
|
|
poll_fds[j].events = 0;
|
|
poll_fds[j].revents = 0;
|
|
break;
|
|
}
|
|
}
|
|
#else
|
|
FD_CLR(fd, &fds_org);
|
|
if (maxfds == fd + 1) {
|
|
while (--fd >= 0) {
|
|
if (FD_ISSET(fd, &fds_org))
|
|
break;
|
|
}
|
|
maxfds = fd + 1;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
static void
|
|
open_af_unix(void)
|
|
{
|
|
struct sockaddr_un sunix;
|
|
|
|
unlink(socket_name);
|
|
|
|
memset((char *)&sunix, '\0', sizeof(sunix));
|
|
sunix.sun_family = AF_UNIX;
|
|
strcpy(sunix.sun_path, socket_name);
|
|
|
|
if ((fd_unix = socket(AF_UNIX, SOCK_STREAM, 0)) == ERROR) {
|
|
unlink(socket_name);
|
|
fprintf(stderr, "Can't create AF_UNIX socket\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (bind(fd_unix, (struct sockaddr *)&sunix,
|
|
strlen(sunix.sun_path) + 2) == ERROR) {
|
|
if (errno == EADDRINUSE) {
|
|
fprintf(stderr, "Port '%s' is already in use\n",
|
|
socket_name);
|
|
} else {
|
|
fprintf(stderr, "Can't bind AF_UNIX socket\n");
|
|
}
|
|
shutdown(fd_unix, 2);
|
|
close(fd_unix);
|
|
unlink(socket_name);
|
|
exit(1);
|
|
}
|
|
|
|
if (listen(fd_unix, SOMAXCONN) == ERROR) {
|
|
shutdown(fd_unix, 2);
|
|
unlink(socket_name);
|
|
close(fd_unix);
|
|
fprintf(stderr, "Can't listen AF_UNIX socket\n");
|
|
exit(1);
|
|
}
|
|
set_fd(fd_unix);
|
|
}
|
|
|
|
|
|
static void
|
|
open_af_inet(void)
|
|
{
|
|
struct sockaddr_in sin;
|
|
struct servent *sp;
|
|
u_short port;
|
|
int true = 1;
|
|
|
|
if ((sp = getservbyname(port_name, "tcp")) != NULL)
|
|
port = ntohs(sp->s_port);
|
|
else
|
|
port = port_number;
|
|
|
|
memset((char *)&sin, '\0', sizeof(sin));
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = htons(port);
|
|
sin.sin_addr.s_addr = htonl(INADDR_ANY);
|
|
|
|
if ((fd_inet = socket(AF_INET, SOCK_STREAM, 0)) == ERROR) {
|
|
fprintf(stderr, "Can't create AF_INET socket\n");
|
|
exit(1);
|
|
}
|
|
|
|
setsockopt(fd_inet, SOL_SOCKET, SO_REUSEADDR, &true, sizeof(true));
|
|
|
|
if (bind(fd_inet, (struct sockaddr *)&sin, sizeof(sin)) == ERROR) {
|
|
if (errno == EADDRINUSE) {
|
|
if (sp) {
|
|
fprintf(stderr,
|
|
"Port '%s(%d)' is already in use\n",
|
|
port_name, port);
|
|
} else {
|
|
fprintf(stderr,
|
|
"Port %d is already in use\n",
|
|
port);
|
|
}
|
|
} else {
|
|
fprintf(stderr, "Can't bind AF_INET socket\n");
|
|
}
|
|
shutdown(fd_inet, 2);
|
|
close(fd_inet);
|
|
exit(1);
|
|
}
|
|
|
|
if (listen(fd_inet, SOMAXCONN) == ERROR) {
|
|
shutdown(fd_inet, 2);
|
|
close(fd_inet);
|
|
fprintf(stderr, "Can't listen AF_INET socket\n");
|
|
exit(1);
|
|
}
|
|
set_fd(fd_inet);
|
|
}
|
|
|
|
void
|
|
open_socket(void)
|
|
{
|
|
open_af_inet();
|
|
open_af_unix();
|
|
}
|
|
|
|
static int
|
|
connect_af_unix(void)
|
|
{
|
|
struct sockaddr_un sunix;
|
|
int i = sizeof(sunix);
|
|
int fd;
|
|
|
|
if ((fd = accept(fd_unix, (struct sockaddr *)&sunix, &i)) == ERROR)
|
|
warning_out("Can't accept AF_UNIX socket");
|
|
return fd;
|
|
}
|
|
|
|
static int
|
|
connect_af_inet(void)
|
|
{
|
|
struct sockaddr_in sin;
|
|
int i = sizeof(sin);
|
|
int fd;
|
|
|
|
if ((fd = accept(fd_inet, (struct sockaddr *)&sin, &i)) == ERROR)
|
|
warning_out("Can't accept AF_INET socket");
|
|
return fd;
|
|
}
|
|
|
|
static void
|
|
close_af_unix(void)
|
|
{
|
|
struct sockaddr_un sunix;
|
|
int true = 1;
|
|
int i;
|
|
|
|
ioctl(fd_unix, FIONBIO, &true);
|
|
for (; ;) {
|
|
i = sizeof(sunix);
|
|
if (accept(fd_unix, (struct sockaddr *)&sunix, &i) < 0)
|
|
break;
|
|
}
|
|
shutdown(fd_unix, 2);
|
|
close(fd_unix);
|
|
unlink(socket_name);
|
|
clr_fd(fd_unix);
|
|
}
|
|
|
|
static void
|
|
close_af_inet(void)
|
|
{
|
|
struct sockaddr_in sin;
|
|
int true = 1;
|
|
int i;
|
|
|
|
ioctl(fd_inet, FIONBIO, &true);
|
|
for (; ;) {
|
|
i = sizeof(sin);
|
|
if (accept(fd_inet, (struct sockaddr *)&sin, &i) < 0)
|
|
break;
|
|
}
|
|
shutdown(fd_inet, 2);
|
|
close(fd_inet);
|
|
clr_fd(fd_inet);
|
|
}
|
|
|
|
void
|
|
close_socket(void)
|
|
{
|
|
close_af_unix();
|
|
close_af_inet();
|
|
}
|
|
|
|
static void
|
|
#ifdef SVR4
|
|
connect_client(struct pollfd *readfds)
|
|
#else
|
|
connect_client(fd_set *readfds)
|
|
#endif
|
|
{
|
|
int fd;
|
|
Client *client_tmp;
|
|
|
|
#ifdef SVR4
|
|
int i;
|
|
|
|
for (i = 0; i < maxfds; i++) {
|
|
if ((readfds[i].fd == fd_inet) &&
|
|
(readfds[i].revents == POLLIN)) {
|
|
fd = connect_af_inet();
|
|
readfds[i].revents = 0;
|
|
break;
|
|
}
|
|
if ((readfds[i].fd == fd_unix) &&
|
|
(readfds[i].revents == POLLIN)) {
|
|
fd = connect_af_unix();
|
|
readfds[i].revents = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (i == maxfds)
|
|
return;
|
|
#else /* SVR4 */
|
|
if (FD_ISSET(fd_inet, readfds))
|
|
fd = connect_af_inet();
|
|
else if (FD_ISSET(fd_unix, readfds))
|
|
fd = connect_af_unix();
|
|
else
|
|
return;
|
|
#endif /* SVR4 */
|
|
if (fd == ERROR)
|
|
return;
|
|
|
|
if (client_num >= MaxClientNum || client_num >= max_client) {
|
|
warning_out("No more client");
|
|
} else {
|
|
debug_out(1, "client create(%d)\r\n", fd);
|
|
logging_out("connect to client on %d", fd);
|
|
|
|
if ((client_tmp = (Client *)malloc(sizeof(Client))) != NULL) {
|
|
memset(client_tmp, 0, sizeof(Client));
|
|
client_tmp->fd = fd;
|
|
client_tmp->next = client;
|
|
client = client_tmp;
|
|
client_num++;
|
|
|
|
set_fd(fd);
|
|
|
|
return;
|
|
}
|
|
warning_out("No more client(Can't alloc)");
|
|
}
|
|
}
|
|
|
|
static Client *
|
|
disconnect_client(Client *cp)
|
|
{
|
|
WorkArea *wp;
|
|
StdyFile *sp;
|
|
int fd;
|
|
Client *cl_before, *cl_tmp;
|
|
|
|
if ((sp = cp->stdy) != NULL)
|
|
closestdy(sp);
|
|
if ((wp = cp->work) != NULL)
|
|
free_workarea(wp);
|
|
|
|
debug_out(1, "client dead(%d)\r\n", cp->fd);
|
|
logging_out("disconnect from client on %d", cp->fd);
|
|
if (cp == client) {
|
|
client = cp->next;
|
|
free(cp);
|
|
cp = client;
|
|
} else {
|
|
cl_before = client;
|
|
cl_tmp = client->next;
|
|
while (cl_tmp) {
|
|
if (cl_tmp == cp) {
|
|
cl_before->next = cp->next;
|
|
free(cp);
|
|
break;
|
|
}
|
|
cl_before = cl_tmp;
|
|
cl_tmp = cl_tmp->next;
|
|
}
|
|
cp = cl_before->next;
|
|
}
|
|
client_num--;
|
|
return cp;
|
|
}
|
|
|
|
void
|
|
communicate(void)
|
|
{
|
|
|
|
signal(SIGPIPE, SIG_IGN);
|
|
|
|
for (; ;) {
|
|
#ifdef SVR4
|
|
int i;
|
|
|
|
while (poll(poll_fds, maxfds, -1) == ERROR) {
|
|
if (errno != EINTR)
|
|
error_out("poll");
|
|
errno = 0;
|
|
}
|
|
#else
|
|
|
|
fd_set readfds;
|
|
|
|
readfds = fds_org;
|
|
while (select(maxfds, &readfds, NULL, NULL, NULL) == ERROR) {
|
|
if (errno != EINTR)
|
|
error_out("select");
|
|
errno = 0;
|
|
}
|
|
#endif
|
|
|
|
for (cur_client = client; cur_client;) {
|
|
if (setjmp(client_dead)) {
|
|
cur_client = disconnect_client(cur_client);
|
|
continue;
|
|
}
|
|
#ifdef SVR4
|
|
for (i = 0; i < maxfds; i++) {
|
|
if ((poll_fds[i].fd == cur_client->fd) &&
|
|
(poll_fds[i].revents == POLLIN)) {
|
|
poll_fds[i].revents = 0;
|
|
client_fd = cur_client->fd;
|
|
putpos = buflen = getpos = 0;
|
|
execute_cmd();
|
|
break;
|
|
}
|
|
}
|
|
cur_client = cur_client->next;
|
|
}
|
|
connect_client(poll_fds);
|
|
#else
|
|
if (FD_ISSET(cur_client->fd, &readfds)) {
|
|
client_fd = cur_client->fd;
|
|
putpos = buflen = getpos = 0;
|
|
execute_cmd();
|
|
}
|
|
cur_client = cur_client->next;
|
|
}
|
|
connect_client(&readfds);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void
|
|
put_flush(void)
|
|
{
|
|
int i, len;
|
|
char *p;
|
|
|
|
for (len = putpos, p = putbuf; len > 0;) {
|
|
if ((i = write(client_fd, p, len)) == ERROR)
|
|
longjmp(client_dead, -1);
|
|
len -= i;
|
|
p += i;
|
|
}
|
|
putpos = 0;
|
|
}
|
|
|
|
void
|
|
put_byte(int c)
|
|
{
|
|
putbuf[putpos++] = c;
|
|
if (putpos >= sizeof(putbuf))
|
|
put_flush();
|
|
}
|
|
|
|
void
|
|
put_work(int c)
|
|
{
|
|
put_byte(c >> 8);
|
|
put_byte(c & 0xff);
|
|
}
|
|
|
|
void
|
|
put_int(int c)
|
|
{
|
|
put_byte(c >> (8 * 3));
|
|
put_byte(c >> (8 * 2));
|
|
put_byte(c >> (8 * 1));
|
|
put_byte(c);
|
|
}
|
|
|
|
u_char *
|
|
put_string(u_char *p)
|
|
{
|
|
if (p) {
|
|
do {
|
|
put_byte(*p);
|
|
} while (*p++);
|
|
} else {
|
|
put_byte(0);
|
|
}
|
|
return p;
|
|
}
|
|
|
|
u_char *
|
|
put_ndata(u_char *p, int n)
|
|
{
|
|
while (n-- > 0)
|
|
put_byte(p ? *p++ : 0);
|
|
return p;
|
|
}
|
|
|
|
void
|
|
get_buf(void)
|
|
{
|
|
int i;
|
|
|
|
for (;;) {
|
|
if ((i = read(client_fd, getbuf, sizeof(getbuf))) > 0)
|
|
break;
|
|
if (i == ERROR) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
if (errno == EWOULDBLOCK)
|
|
continue;
|
|
}
|
|
longjmp(client_dead, -1);
|
|
}
|
|
buflen = i;
|
|
getpos = 0;
|
|
}
|
|
|
|
int
|
|
get_byte(void)
|
|
{
|
|
if (getpos >= buflen)
|
|
get_buf();
|
|
return getbuf[getpos++] & 0xff;
|
|
}
|
|
|
|
int
|
|
get_word(void)
|
|
{
|
|
int i;
|
|
|
|
i = get_byte();
|
|
return (i << 8) | get_byte();
|
|
}
|
|
|
|
int
|
|
get_int(void)
|
|
{
|
|
int i0, i1, i2;
|
|
|
|
i0 = get_byte();
|
|
i1 = get_byte();
|
|
i2 = get_byte();
|
|
return (i0 << (8*3)) | (i1 << (8*2)) | (i2 << (8*1)) | get_byte();
|
|
}
|
|
|
|
int
|
|
get_nstring(u_char *p, int n)
|
|
{
|
|
int c;
|
|
|
|
do {
|
|
c = get_byte();
|
|
if (n-- > 0)
|
|
*p++ = c;
|
|
} while (c);
|
|
|
|
return (n < 0) ? ERROR : 0;
|
|
}
|
|
|
|
u_char *
|
|
get_ndata(u_char *p, int n)
|
|
{
|
|
while (n-- > 0)
|
|
*p++ = get_byte();
|
|
return p;
|
|
}
|