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proc.c
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proc.c
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/* vim:set sw=4 sts=4 et: */
/**
* FILE: proc.c
* AUTHOR: Yukihiro Nakadaira <http://yukihiro.nakadaira.googlepages.com/#vimproc> (original)
* Nico Raffo <nicoraffo@gmail.com> (modified)
*/
#define _XOPEN_SOURCE 600
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <stddef.h>
#include <dlfcn.h>
#include <ctype.h>
#include <dirent.h>
#if !defined __APPLE__
# include <sys/types.h>
# include <sys/ioctl.h>
#endif
#include <signal.h>
#include <fcntl.h>
/* for poll() */
#if defined __APPLE__
# include "fakepoll.h"
#else
# include <poll.h>
#endif
/* for forkpty() / login_tty() */
#if (defined __linux__ || defined __CYGWIN__ || defined __gnu_hurd__) && !defined __ANDROID__
# include <pty.h>
# include <utmp.h>
#elif defined __APPLE__ || defined __NetBSD__ || defined __OpenBSD__
# include <util.h>
#elif defined __sun__ || defined __ANDROID__
# include "ptytty.h"
#else
# include <termios.h>
# include <libutil.h>
#endif
/* for ioctl() */
#ifdef __APPLE__
# include <sys/ioctl.h>
#endif
/* for tc* and ioctl */
#include <sys/types.h>
#include <termios.h>
#ifndef TIOCGWINSZ
# include <sys/ioctl.h> /* 4.3+BSD requires this too */
#endif
/* for waitpid() */
#include <sys/types.h>
#include <sys/wait.h>
#if defined __NetBSD__
# define WIFCONTINUED(x) (_WSTATUS(x) == _WSTOPPED && WSTOPSIG(x) == 0x13)
#elif defined __ANDROID__
# define WIFCONTINUED(x) (WIFSTOPPED(x) && WSTOPSIG(x) == 0x13)
#endif
/* for socket */
#if defined __FreeBSD__
# define __BSD_VISIBLE 1
# include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
/* for ctermid */
#if defined __ANDROID__
# define ctermid(x) "/dev/tty"
#endif
#include "vimstack.c"
const int debug = 0;
/* API */
const char *vp_dlopen(char *args); /* [handle] (path) */
const char *vp_dlclose(char *args); /* [] (handle) */
const char *vp_dlversion(char *args); /* [version] () */
const char *vp_file_open(char *args); /* [fd] (path, flags, mode) */
const char *vp_file_close(char *args); /* [] (fd) */
const char *vp_file_read(char *args); /* [eof, hd] (fd, cnt, timeout) */
const char *vp_file_write(char *args); /* [nleft] (fd, timeout, hd) */
const char *vp_pipe_open(char *args); /* [pid, [fd] * npipe]
(npipe, hstdin, hstdout, hstderr, argc, [argv]) */
const char *vp_pipe_close(char *args); /* [] (fd) */
const char *vp_pipe_read(char *args); /* [eof, hd] (fd, cnt, timeout) */
const char *vp_pipe_write(char *args); /* [nleft] (fd, timeout, hd) */
const char *vp_pty_open(char *args);
/* [pid, stdin, stdout, stderr]
(npipe, width, height,hstdin, hstdout, hstderr, argc, [argv]) */
const char *vp_pty_close(char *args); /* [] (fd) */
const char *vp_pty_read(char *args); /* [eof, hd] (fd, cnt, timeout) */
const char *vp_pty_write(char *args); /* [nleft] (fd, timeout, hd) */
const char *vp_pty_get_winsize(char *args); /* [width, height] (fd) */
const char *vp_pty_set_winsize(char *args); /* [] (fd, width, height) */
const char *vp_kill(char *args); /* [] (pid, sig) */
const char *vp_waitpid(char *args); /* [cond, status] (pid) */
const char *vp_socket_open(char *args); /* [socket] (host, port) */
const char *vp_socket_close(char *args);/* [] (socket) */
const char *vp_socket_read(char *args); /* [eof, hd] (socket, cnt, timeout) */
const char *vp_socket_write(char *args);/* [nleft] (socket, hd, timeout) */
const char *vp_host_exists(char *args); /* [int] (host) */
const char *vp_decode(char *args); /* [decoded_str] (encode_str) */
const char *vp_get_signals(char *args); /* [signals] () */
/* --- */
#define VP_BUFSIZE (65536)
#define VP_READ_BUFSIZE (VP_BUFSIZE - (VP_HEADER_SIZE + 1) * 2 - 1)
static vp_stack_t _result = VP_STACK_NULL;
const char *
vp_dlopen(char *args)
{
vp_stack_t stack;
char *path;
void *handle;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_str(&stack, &path));
VP_RETURN_IF_FAIL(vp_stack_reserve(&_result, VP_BUFSIZE));
handle = dlopen(path, RTLD_LAZY);
if (handle == NULL)
return dlerror();
vp_stack_push_num(&_result, "%p", handle);
return vp_stack_return(&_result);
}
const char *
vp_dlclose(char *args)
{
vp_stack_t stack;
void *handle;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%p", &handle));
/* On FreeBSD6, to call dlclose() twice with same pointer causes SIGSEGV */
if (dlclose(handle) == -1)
return dlerror();
vp_stack_free(&_result);
return NULL;
}
const char *
vp_dlversion(char *args)
{
vp_stack_push_num(&_result, "%2d%02d", 9, 3);
return vp_stack_return(&_result);
}
static int
str_to_oflag(const char *flags)
{
int oflag = 0;
if (strchr("rwa", flags[0])) {
if (strchr(flags, '+')) {
oflag = O_RDWR;
} else {
oflag = flags[0] == 'r' ? O_RDONLY : O_WRONLY;
}
if (flags[0] == 'w' || flags[0] == 'a') {
oflag |= O_CREAT | (flags[0] == 'w' ? O_TRUNC : O_APPEND);
}
#define VP_CHR_TO_OFLAG(_c, _f) do { \
if (strchr(flags, (_c))) { oflag |= (_f); } \
} while (0)
#ifdef O_EXCL
VP_CHR_TO_OFLAG('x', O_EXCL);
#endif
#ifdef O_CLOEXEC
VP_CHR_TO_OFLAG('e', O_CLOEXEC);
#endif
#ifdef O_BINARY
VP_CHR_TO_OFLAG('b', O_BINARY);
#endif
#ifdef O_TEXT
VP_CHR_TO_OFLAG('t', O_TEXT);
#endif
#ifdef O_SEQUENTIAL
VP_CHR_TO_OFLAG('S', O_SEQUENTIAL);
#endif
#ifdef O_RANDOM
VP_CHR_TO_OFLAG('R', O_RANDOM);
#endif
#undef VP_CHR_TO_OFLAG
} else {
if (strstr(flags, "O_RDONLY")) {
oflag = O_RDONLY;
} else if (strstr(flags, "O_WRONLY")) {
oflag = O_WRONLY;
} else if (strstr(flags, "O_RDWR")) {
oflag = O_RDWR;
} else {
return -1;
}
#define VP_STR_TO_OFLAG(_f) do { \
if (strstr(flags, #_f)) { oflag |= (_f); } \
} while (0)
VP_STR_TO_OFLAG(O_APPEND);
VP_STR_TO_OFLAG(O_CREAT);
VP_STR_TO_OFLAG(O_TRUNC);
#ifdef O_EXCL
VP_STR_TO_OFLAG(O_EXCL);
#endif
#ifdef O_NONBLOCK
VP_STR_TO_OFLAG(O_NONBLOCK);
#endif
#ifdef O_SHLOCK
VP_STR_TO_OFLAG(O_SHLOCK);
#endif
#ifdef O_EXLOCK
VP_STR_TO_OFLAG(O_EXLOCK);
#endif
#ifdef O_DIRECT
VP_STR_TO_OFLAG(O_DIRECT);
#endif
#ifdef O_FSYNC
VP_STR_TO_OFLAG(O_FSYNC);
#endif
#ifdef O_NOFOLLOW
VP_STR_TO_OFLAG(O_NOFOLLOW);
#endif
#ifdef O_TEMPORARY
VP_STR_TO_OFLAG(O_TEMPORARY);
#endif
#ifdef O_RANDOM
VP_STR_TO_OFLAG(O_RANDOM);
#endif
#ifdef O_SEQUENTIAL
VP_STR_TO_OFLAG(O_SEQUENTIAL);
#endif
#ifdef O_BINARY
VP_STR_TO_OFLAG(O_BINARY);
#endif
#ifdef O_TEXT
VP_STR_TO_OFLAG(O_TEXT);
#endif
#ifdef O_INHERIT
VP_STR_TO_OFLAG(O_INHERIT);
#endif
#ifdef _O_SHORT_LIVED
VP_STR_TO_OFLAG(O_SHORT_LIVED);
#endif
#undef VP_STR_TO_OFLAG
}
return oflag;
}
static int
fd_set_nonblock(int fd)
{
#if defined(F_GETFL) && defined(F_SETFL) && defined(O_NONBLOCK)
int flag;
if ((flag = fcntl(fd, F_GETFL, 0)) == -1)
return -1;
if (!(flag & O_NONBLOCK))
return fcntl(fd, F_SETFL, flag | O_NONBLOCK);
#endif
return 0;
}
#ifdef __linux__
# define VP_SET_NONBLOCK_IF_NEEDED(_fd) (void)fd_set_nonblock(_fd)
#else
# define VP_SET_NONBLOCK_IF_NEEDED(_fd) do { /* nop */ } while (0)
#endif
const char *
vp_fd_read(char *args, int is_pty_pipe)
{
#ifdef __linux__
# define VP_POLLIN (POLLIN | POLLHUP)
#else
# define VP_POLLIN (POLLIN)
#endif
vp_stack_t stack;
int fd;
int cnt;
int timeout;
int n;
char *buf;
char *eof;
unsigned int size = 0;
struct pollfd pfd = {0, POLLIN, 0};
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &fd));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &cnt));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &timeout));
if (cnt < 0 || VP_READ_BUFSIZE < cnt) {
cnt = VP_READ_BUFSIZE;
}
/* initialize buffer */
_result.top = _result.buf;
vp_stack_push_num(&_result, "%d", 0); /* set eof to 0 */
eof = _result.top - 1;
buf = _result.top;
*(buf++) = VP_EOV;
buf += VP_HEADER_SIZE;
pfd.fd = fd;
while (cnt > 0) {
n = poll(&pfd, 1, timeout);
if (n == -1) {
/* eof or error */
*eof = '1';
break;
} else if (n == 0) {
/* timeout */
break;
}
if (pfd.revents & VP_POLLIN) {
n = read(fd, buf, cnt);
if (n == -1) {
if (pfd.revents & POLLERR
|| pfd.revents & POLLNVAL
|| pfd.revents & POLLWRNORM
/* Cygwin(after ver.2.0) fails pty read and returns
* POLLIN. */
|| (!is_pty_pipe && pfd.revents & POLLIN)
) {
return vp_stack_return_error(&_result,
"read() error: revents = %d, error = %s",
pfd.revents, strerror(errno));
}
/* eof */
*eof = '1';
break;
} else if (n == 0) {
/* eof */
*eof = '1';
break;
}
/* decrease stack top for concatenate. */
cnt -= n;
buf += n;
size += n;
/* try read more bytes without waiting */
timeout = 0;
continue;
} else if (pfd.revents & (POLLERR | POLLHUP)) {
/* eof or error */
*eof = '1';
break;
} else if (pfd.revents & POLLNVAL) {
return vp_stack_return_error(&_result, "poll() POLLNVAL: %d",
pfd.revents);
}
/* DO NOT REACH HERE */
return vp_stack_return_error(&_result, "poll() unknown status: %d",
pfd.revents);
}
vp_encode_size(size, _result.top + 1);
_result.top = buf;
return vp_stack_return(&_result);
#undef VP_POLLIN
}
const char *
vp_file_open(char *args)
{
vp_stack_t stack;
char *path;
char *flags;
int mode; /* used when flags have O_CREAT */
int oflag = 0;
int fd;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_str(&stack, &path));
VP_RETURN_IF_FAIL(vp_stack_pop_str(&stack, &flags));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &mode));
oflag = str_to_oflag(flags);
if (oflag == -1)
return vp_stack_return_error(&_result, "open flag error.");
fd = open(path, oflag, mode);
if (fd == -1)
return vp_stack_return_error(&_result, "open() error: %s",
strerror(errno));
vp_stack_push_num(&_result, "%d", fd);
return vp_stack_return(&_result);
}
const char *
vp_file_close(char *args)
{
vp_stack_t stack;
int fd;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &fd));
if (close(fd) == -1)
return vp_stack_return_error(&_result, "close() error: %s",
strerror(errno));
return NULL;
}
const char *
vp_file_read(char *args)
{
return vp_fd_read(args, 0);
}
const char *
vp_file_write(char *args)
{
vp_stack_t stack;
int fd;
char *buf;
size_t size;
int timeout;
size_t nleft;
int n;
struct pollfd pfd = {0, POLLOUT, 0};
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &fd));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &timeout));
size = vp_decode_size(stack.top);
buf = stack.top + VP_HEADER_SIZE;
pfd.fd = fd;
nleft = 0;
while (nleft < size) {
n = poll(&pfd, 1, timeout);
if (n == -1) {
return vp_stack_return_error(&_result, "poll() error: %s",
strerror(errno));
} else if (n == 0) {
/* timeout */
break;
}
if (pfd.revents & POLLOUT) {
n = write(fd, buf + nleft, size - nleft);
if (n == -1) {
return vp_stack_return_error(&_result, "write() error: %s",
strerror(errno));
}
nleft += n;
/* try write more bytes without waiting */
timeout = 0;
continue;
} else if (pfd.revents & (POLLERR | POLLHUP)) {
/* eof or error */
break;
} else if (pfd.revents & POLLNVAL) {
return vp_stack_return_error(&_result, "poll() POLLNVAL: %d",
pfd.revents);
}
/* DO NOT REACH HERE */
return vp_stack_return_error(&_result, "poll() unknown status: %s",
pfd.revents);
}
vp_stack_push_num(&_result, "%zu", nleft);
return vp_stack_return(&_result);
}
static void
close_allfd(int fds[3][2])
{
int i;
for (i = 0; i < 6; ++i) {
int fd = fds[i / 2][i % 2];
if (fd > 0) {
(void)close(fd);
}
}
}
const char *
vp_pipe_open(char *args)
{
#define VP_GOTO_ERROR(_fmt) do { errfmt = (_fmt); goto error; } while(0)
vp_stack_t stack;
int npipe, hstdin, hstderr, hstdout;
int argc;
int fd[3][2] = {{0}};
pid_t pid;
int dummy;
char *errfmt;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &npipe));
if (npipe != 2 && npipe != 3)
return vp_stack_return_error(&_result, "npipe range error. wrong pipes.");
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &hstdin));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &hstdout));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &hstderr));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &argc));
if (hstdin > 0) {
fd[0][0] = hstdin;
fd[0][1] = 0;
} else {
if (pipe(fd[0]) < 0) {
VP_GOTO_ERROR("pipe() error: %s");
}
}
if (hstdout > 0) {
fd[1][1] = hstdout;
fd[1][0] = 0;
} else {
if (pipe(fd[1]) < 0) {
VP_GOTO_ERROR("pipe() error: %s");
}
}
if (hstderr > 0) {
fd[2][1] = hstderr;
fd[2][0] = 0;
} else if (npipe == 3 && hstderr == 0) {
if (pipe(fd[2]) < 0) {
VP_GOTO_ERROR("pipe() error: %s");
}
}
pid = fork();
if (pid < 0) {
VP_GOTO_ERROR("fork() error: %s");
} else if (pid == 0) {
/* child */
char **argv;
int i;
/* Set process group. */
setpgid(0, 0);
if (fd[0][1] > 0) {
close(fd[0][1]);
}
if (fd[1][0] > 0) {
close(fd[1][0]);
}
if (fd[2][0] > 0) {
close(fd[2][0]);
}
if (fd[0][0] > 0) {
if (dup2(fd[0][0], STDIN_FILENO) != STDIN_FILENO) {
goto child_error;
}
close(fd[0][0]);
}
if (fd[1][1] > 0) {
if (dup2(fd[1][1], STDOUT_FILENO) != STDOUT_FILENO) {
goto child_error;
}
close(fd[1][1]);
}
if (fd[2][1] > 0) {
if (dup2(fd[2][1], STDERR_FILENO) != STDERR_FILENO) {
goto child_error;
}
close(fd[2][1]);
} else if (npipe == 2) {
if (dup2(STDOUT_FILENO, STDERR_FILENO) != STDERR_FILENO) {
goto child_error;
}
}
{
#ifndef TIOCNOTTY
setsid();
#else
/* Ignore tty. */
char name[L_ctermid];
if (ctermid(name)[0] != '\0') {
int tfd;
if ((tfd = open(name, O_RDONLY)) != -1) {
ioctl(tfd, TIOCNOTTY, NULL);
close(tfd);
}
}
#endif
}
argv = malloc(sizeof(char *) * (argc+1));
if (argv == NULL) {
goto child_error;
}
for (i = 0; i < argc; ++i) {
if (vp_stack_pop_str(&stack, &(argv[i]))) {
free(argv);
goto child_error;
}
}
argv[argc] = NULL;
execv(argv[0], argv);
/* error */
goto child_error;
} else {
/* parent */
if (fd[0][0] > 0) {
close(fd[0][0]);
}
if (fd[1][1] > 0) {
close(fd[1][1]);
}
if (fd[2][1] > 0) {
close(fd[2][1]);
}
vp_stack_push_num(&_result, "%d", pid);
vp_stack_push_num(&_result, "%d", fd[0][1]);
vp_stack_push_num(&_result, "%d", fd[1][0]);
if (npipe == 3) {
vp_stack_push_num(&_result, "%d", fd[2][0]);
}
return vp_stack_return(&_result);
}
/* DO NOT REACH HERE */
return NULL;
/* error */
error:
close_allfd(fd);
return vp_stack_return_error(&_result, errfmt, strerror(errno));
child_error:
dummy = write(STDOUT_FILENO, strerror(errno), strlen(strerror(errno)));
_exit(EXIT_FAILURE);
#undef VP_GOTO_ERROR
}
const char *
vp_pipe_close(char *args)
{
return vp_file_close(args);
}
const char *
vp_pipe_read(char *args)
{
return vp_fd_read(args, 1);
}
const char *
vp_pipe_write(char *args)
{
return vp_file_write(args);
}
const char *
vp_pty_open(char *args)
{
#define VP_GOTO_ERROR(_fmt) do { errfmt = (_fmt); goto error; } while(0)
vp_stack_t stack;
int argc;
int fd[3][2] = {{0}};
pid_t pid;
struct winsize ws = {0, 0, 0, 0};
int dummy;
int hstdin, hstderr, hstdout;
int fdm;
int npipe;
char *errfmt;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &npipe));
if (npipe != 2 && npipe != 3)
return vp_stack_return_error(&_result, "npipe range error. wrong pipes.");
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%hu", &(ws.ws_col)));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%hu", &(ws.ws_row)));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &hstdin));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &hstdout));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &hstderr));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &argc));
/* Set pipe */
if (hstdin > 0) {
fd[0][0] = hstdin;
fd[0][1] = 0;
}
if (hstdout > 1) {
fd[1][1] = hstdout;
fd[1][0] = 0;
} else if (hstdout == 1) {
if (pipe(fd[1]) < 0) {
VP_GOTO_ERROR("pipe() error: %s");
}
}
if (hstderr > 1) {
fd[2][1] = hstderr;
fd[2][0] = 0;
} else if (npipe == 3) {
if (hstderr == 1){
if (pipe(fd[2]) < 0) {
VP_GOTO_ERROR("pipe() error: %s");
}
} else if (hstderr == 0) {
if (openpty(&fd[2][0], &fd[2][1], NULL, NULL, &ws) < 0) {
VP_GOTO_ERROR("openpty() error: %s");
}
VP_SET_NONBLOCK_IF_NEEDED(fd[2][0]);
}
}
pid = forkpty(&fdm, NULL, NULL, &ws);
if (pid < 0) {
VP_GOTO_ERROR("fork() error: %s");
} else if (pid == 0) {
/* child */
char **argv;
int i;
/* Close pipe */
if (fd[1][0] > 0) {
close(fd[1][0]);
}
if (fd[2][0] > 0) {
close(fd[2][0]);
}
if (fd[0][0] > 0) {
if (dup2(fd[0][0], STDIN_FILENO) != STDIN_FILENO) {
goto child_error;
}
close(fd[0][0]);
}
if (fd[1][1] > 0) {
if (dup2(fd[1][1], STDOUT_FILENO) != STDOUT_FILENO) {
goto child_error;
}
close(fd[1][1]);
}
if (fd[2][1] > 0) {
if (dup2(fd[2][1], STDERR_FILENO) != STDERR_FILENO) {
goto child_error;
}
close(fd[2][1]);
}
argv = malloc(sizeof(char *) * (argc+1));
if (argv == NULL) {
goto child_error;
}
for (i = 0; i < argc; ++i) {
if (vp_stack_pop_str(&stack, &(argv[i]))) {
free(argv);
goto child_error;
}
}
argv[argc] = NULL;
execv(argv[0], argv);
/* error */
goto child_error;
} else {
/* parent */
if (fd[1][1] > 0) {
close(fd[1][1]);
}
if (fd[2][1] > 0) {
close(fd[2][1]);
}
if (hstdin == 0) {
fd[0][1] = fdm;
}
if (hstdout == 0) {
fd[1][0] = hstdin == 0 ? dup(fdm) : fdm;
VP_SET_NONBLOCK_IF_NEEDED(fd[1][0]);
}
vp_stack_push_num(&_result, "%d", pid);
vp_stack_push_num(&_result, "%d", fd[0][1]);
vp_stack_push_num(&_result, "%d", fd[1][0]);
if (npipe == 3) {
vp_stack_push_num(&_result, "%d", fd[2][0]);
}
return vp_stack_return(&_result);
}
/* DO NOT REACH HERE */
return NULL;
/* error */
error:
close_allfd(fd);
return vp_stack_return_error(&_result, errfmt, strerror(errno));
child_error:
dummy = write(STDOUT_FILENO, strerror(errno), strlen(strerror(errno)));
_exit(EXIT_FAILURE);
#undef VP_GOTO_ERROR
}
const char *
vp_pty_close(char *args)
{
return vp_file_close(args);
}
const char *
vp_pty_read(char *args)
{
return vp_fd_read(args, 1);
}
const char *
vp_pty_write(char *args)
{
return vp_file_write(args);
}
const char *
vp_pty_get_winsize(char *args)
{
vp_stack_t stack;
int fd;
struct winsize ws = {0, 0, 0, 0};
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &fd));
if (ioctl(fd, TIOCGWINSZ, &ws) < 0)
return vp_stack_return_error(&_result, "ioctl() error: %s",
strerror(errno));
vp_stack_push_num(&_result, "%hu", ws.ws_col);
vp_stack_push_num(&_result, "%hu", ws.ws_row);
return vp_stack_return(&_result);
}
const char *
vp_pty_set_winsize(char *args)
{
vp_stack_t stack;
int fd;
struct winsize ws = {0, 0, 0, 0};
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &fd));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%hu", &(ws.ws_col)));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%hu", &(ws.ws_row)));
if (ioctl(fd, TIOCSWINSZ, &ws) < 0)
return vp_stack_return_error(&_result, "ioctl() error: %s",
strerror(errno));
return NULL;
}
const char *
vp_kill(char *args)
{
vp_stack_t stack;
pid_t pid, pgid;
int sig;
int ret;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &pid));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &sig));
ret = kill(pid, sig);
if (ret < 0)
return vp_stack_return_error(&_result, "kill() error: %s",
strerror(errno));
if (sig != 0) {
/* Kill by the process group. */
pgid = getpgid(pid);
if (pid == pgid) {
kill(-pgid, sig);
}
}
vp_stack_push_num(&_result, "%d", ret);
return vp_stack_return(&_result);
}
const char *
vp_waitpid(char *args)
{
vp_stack_t stack;
pid_t pid, pgid;
pid_t n;
int status;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_num(&stack, "%d", &pid));
n = waitpid(pid, &status, WNOHANG | WUNTRACED);
if (n == -1)
return vp_stack_return_error(&_result, "waitpid() error: %s",
strerror(errno));
if (n == 0 || WIFCONTINUED(status)) {
vp_stack_push_str(&_result, "run");
vp_stack_push_num(&_result, "%d", 0);
} else if (WIFEXITED(status)) {
/* Kill by the process group. */
pgid = getpgid(pid);
if (pgid > 0) {
kill(-pgid, 15);
}
vp_stack_push_str(&_result, "exit");
vp_stack_push_num(&_result, "%d", WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
vp_stack_push_str(&_result, "signal");
vp_stack_push_num(&_result, "%d", WTERMSIG(status));
} else if (WIFSTOPPED(status)) {
vp_stack_push_str(&_result, "stop");
vp_stack_push_num(&_result, "%d", WSTOPSIG(status));
} else {
return vp_stack_return_error(&_result,
"waitpid() unknown status: status=%d", status);
}
return vp_stack_return(&_result);
}
/*
* This is based on socket.diff.gz written by Yasuhiro Matsumoto.
* see: http://marc.theaimsgroup.com/?l=vim-dev&m=105289857008664&w=2
*/
const char *
vp_socket_open(char *args)
{
vp_stack_t stack;
char *host;
char *port;
char *p;
int n;
unsigned short nport;
int sock;
struct sockaddr_in sockaddr;
struct hostent *hostent;
struct servent *servent;
VP_RETURN_IF_FAIL(vp_stack_from_args(&stack, args));
VP_RETURN_IF_FAIL(vp_stack_pop_str(&stack, &host));
VP_RETURN_IF_FAIL(vp_stack_pop_str(&stack, &port));
n = strtol(port, &p, 10);
if (p == port + strlen(port)) {
nport = htons(n);
} else {
servent = getservbyname(port, NULL);
if (servent == NULL)
return vp_stack_return_error(&_result, "getservbyname() error: %s",
port);
nport = servent->s_port;
}
sock = socket(PF_INET, SOCK_STREAM, 0);
hostent = gethostbyname(host);
sockaddr.sin_family = AF_INET;
sockaddr.sin_port = nport;
sockaddr.sin_addr = *((struct in_addr*)*hostent->h_addr_list);
if (connect(sock, (struct sockaddr*)&sockaddr, sizeof(struct sockaddr_in))
== -1)
return vp_stack_return_error(&_result, "connect() error: %s",
strerror(errno));
vp_stack_push_num(&_result, "%d", sock);
return vp_stack_return(&_result);
}
const char *
vp_socket_close(char *args)
{
return vp_file_close(args);