void
init_subshell (void)
{
/* This must be remembered across calls to init_subshell() */
static char pty_name[BUF_SMALL];
char precmd[BUF_SMALL];
switch (check_sid ())
{
case 1:
mc_global.tty.use_subshell = FALSE;
return;
case 2:
mc_global.tty.use_subshell = FALSE;
mc_global.midnight_shutdown = TRUE;
return;
}
/* Take the current (hopefully pristine) tty mode and make */
/* a raw mode based on it now, before we do anything else with it */
init_raw_mode ();
if (mc_global.tty.subshell_pty == 0)
{ /* First time through */
/* Find out what type of shell we have */
if (strstr (mc_global.tty.shell, "/zsh") || getenv ("ZSH_VERSION"))
subshell_type = ZSH;
else if (strstr (mc_global.tty.shell, "/tcsh"))
subshell_type = TCSH;
else if (strstr (mc_global.tty.shell, "/csh"))
subshell_type = TCSH;
else if (strstr (mc_global.tty.shell, "/bash") || getenv ("BASH"))
subshell_type = BASH;
else if (strstr (mc_global.tty.shell, "/fish"))
subshell_type = FISH;
else
{
mc_global.tty.use_subshell = FALSE;
return;
}
/* Open a pty for talking to the subshell */
/* FIXME: We may need to open a fresh pty each time on SVR4 */
mc_global.tty.subshell_pty = pty_open_master (pty_name);
if (mc_global.tty.subshell_pty == -1)
{
fprintf (stderr, "Cannot open master side of pty: %s\r\n", unix_error_string (errno));
mc_global.tty.use_subshell = FALSE;
return;
}
subshell_pty_slave = pty_open_slave (pty_name);
if (subshell_pty_slave == -1)
{
fprintf (stderr, "Cannot open slave side of pty %s: %s\r\n",
pty_name, unix_error_string (errno));
mc_global.tty.use_subshell = FALSE;
return;
}
/* Create a pipe for receiving the subshell's CWD */
if (subshell_type == TCSH)
{
g_snprintf (tcsh_fifo, sizeof (tcsh_fifo), "%s/mc.pipe.%d",
mc_tmpdir (), (int) getpid ());
if (mkfifo (tcsh_fifo, 0600) == -1)
{
fprintf (stderr, "mkfifo(%s) failed: %s\r\n", tcsh_fifo, unix_error_string (errno));
mc_global.tty.use_subshell = FALSE;
return;
}
/* Opening the FIFO as O_RDONLY or O_WRONLY causes deadlock */
if ((subshell_pipe[READ] = open (tcsh_fifo, O_RDWR)) == -1
|| (subshell_pipe[WRITE] = open (tcsh_fifo, O_RDWR)) == -1)
{
fprintf (stderr, _("Cannot open named pipe %s\n"), tcsh_fifo);
perror (__FILE__ ": open");
mc_global.tty.use_subshell = FALSE;
return;
}
}
else /* subshell_type is BASH or ZSH */ if (pipe (subshell_pipe))
{
perror (__FILE__ ": couldn't create pipe");
mc_global.tty.use_subshell = FALSE;
return;
}
}
/* Fork the subshell */
subshell_alive = TRUE;
subshell_stopped = FALSE;
subshell_pid = fork ();
if (subshell_pid == -1)
{
fprintf (stderr, "Cannot spawn the subshell process: %s\r\n", unix_error_string (errno));
/* We exit here because, if the process table is full, the */
/* other method of running user commands won't work either */
exit (EXIT_FAILURE);
}
if (subshell_pid == 0)
{
/* We are in the child process */
init_subshell_child (pty_name);
}
/* Set up 'precmd' or equivalent for reading the subshell's CWD */
switch (subshell_type)
{
case BASH:
g_snprintf (precmd, sizeof (precmd),
" PROMPT_COMMAND='pwd>&%d;kill -STOP $$'\n", subshell_pipe[WRITE]);
break;
case ZSH:
g_snprintf (precmd, sizeof (precmd),
" precmd(){ pwd>&%d;kill -STOP $$ }\n", subshell_pipe[WRITE]);
break;
case TCSH:
g_snprintf (precmd, sizeof (precmd),
"set echo_style=both;"
"alias precmd 'echo $cwd:q >>%s;kill -STOP $$'\n", tcsh_fifo);
break;
case FISH:
g_snprintf (precmd, sizeof (precmd),
"function fish_prompt ; pwd>&%d;kill -STOP %%self; end\n",
subshell_pipe[WRITE]);
break;
}
write_all (mc_global.tty.subshell_pty, precmd, strlen (precmd));
/* Wait until the subshell has started up and processed the command */
subshell_state = RUNNING_COMMAND;
tty_enable_interrupt_key ();
if (!feed_subshell (QUIETLY, TRUE))
{
mc_global.tty.use_subshell = FALSE;
}
tty_disable_interrupt_key ();
if (!subshell_alive)
mc_global.tty.use_subshell = FALSE; /* Subshell died instantly, so don't use it */
}
static int
sftpfs_open_socket (struct vfs_s_super *super, GError ** error)
{
struct addrinfo hints, *res = NULL, *curr_res;
int my_socket = 0;
char port[BUF_TINY];
int e;
if (super->path_element->host == NULL || *super->path_element->host == '\0')
{
g_set_error (error, MC_ERROR, -1, _("sftp: Invalid host name."));
return -1;
}
sprintf (port, "%hu", (unsigned short) super->path_element->port);
if (port == NULL)
{
g_set_error (error, MC_ERROR, -1, _("sftp: Invalid port value."));
return -1;
}
tty_enable_interrupt_key (); /* clear the interrupt flag */
memset (&hints, 0, sizeof (struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
#ifdef AI_ADDRCONFIG
/* By default, only look up addresses using address types for
* which a local interface is configured (i.e. no IPv6 if no IPv6
* interfaces, likewise for IPv4 (see RFC 3493 for details). */
hints.ai_flags = AI_ADDRCONFIG;
#endif
e = getaddrinfo (super->path_element->host, port, &hints, &res);
#ifdef AI_ADDRCONFIG
if (e == EAI_BADFLAGS)
{
/* Retry with no flags if AI_ADDRCONFIG was rejected. */
hints.ai_flags = 0;
e = getaddrinfo (super->path_element->host, port, &hints, &res);
}
#endif
if (e != 0)
{
g_set_error (error, MC_ERROR, -1, _("sftp: %s"), gai_strerror (e));
my_socket = -1;
goto ret;
}
for (curr_res = res; curr_res != NULL; curr_res = curr_res->ai_next)
{
my_socket = socket (curr_res->ai_family, curr_res->ai_socktype, curr_res->ai_protocol);
if (my_socket < 0)
{
if (curr_res->ai_next != NULL)
continue;
vfs_print_message (_("sftp: %s"), unix_error_string (errno));
my_socket = -1;
goto ret;
}
vfs_print_message (_("sftp: making connection to %s"), super->path_element->host);
if (connect (my_socket, curr_res->ai_addr, curr_res->ai_addrlen) >= 0)
break;
close (my_socket);
if (errno == EINTR && tty_got_interrupt ())
g_set_error (error, MC_ERROR, -1, _("sftp: connection interrupted by user"));
else if (res->ai_next == NULL)
g_set_error (error, MC_ERROR, -1, _("sftp: connection to server failed: %s"),
unix_error_string (errno));
else
continue;
my_socket = -1;
break;
}
ret:
if (res != NULL)
freeaddrinfo (res);
tty_disable_interrupt_key ();
return my_socket;
}
void
mcview_ccache_lookup (mcview_t * view, coord_cache_entry_t * coord, enum ccache_type lookup_what)
{
size_t i;
coord_cache_t *cache;
coord_cache_entry_t current, next, entry;
enum ccache_type sorter;
off_t limit;
cmp_func_t cmp_func;
enum
{
NROFF_START,
NROFF_BACKSPACE,
NROFF_CONTINUATION
} nroff_state;
if (view->coord_cache == NULL)
view->coord_cache = coord_cache_new ();
cache = view->coord_cache;
if (cache->size == 0)
{
current.cc_offset = 0;
current.cc_line = 0;
current.cc_column = 0;
current.cc_nroff_column = 0;
mcview_ccache_add_entry (cache, 0, ¤t);
}
sorter = (lookup_what == CCACHE_OFFSET) ? CCACHE_LINECOL : CCACHE_OFFSET;
if (sorter == CCACHE_OFFSET)
cmp_func = mcview_coord_cache_entry_less_offset;
else if (view->text_nroff_mode)
cmp_func = mcview_coord_cache_entry_less_nroff;
else
cmp_func = mcview_coord_cache_entry_less_plain;
tty_enable_interrupt_key ();
retry:
/* find the two neighbor entries in the cache */
i = mcview_ccache_find (view, coord, cmp_func);
/* now i points to the lower neighbor in the cache */
current = *cache->cache[i];
if (i + 1 < view->coord_cache->size)
limit = cache->cache[i + 1]->cc_offset;
else
limit = current.cc_offset + VIEW_COORD_CACHE_GRANUL;
entry = current;
nroff_state = NROFF_START;
for (; current.cc_offset < limit; current = next)
{
int c, nextc;
if (!mcview_get_byte (view, current.cc_offset, &c))
break;
if (!cmp_func (¤t, coord))
{
if (lookup_what == CCACHE_OFFSET && view->text_nroff_mode && nroff_state != NROFF_START)
{
/* don't break here */
}
else
{
break;
}
}
/* Provide useful default values for ''next'' */
next.cc_offset = current.cc_offset + 1;
next.cc_line = current.cc_line;
next.cc_column = current.cc_column + 1;
next.cc_nroff_column = current.cc_nroff_column + 1;
/* and override some of them as necessary. */
if (c == '\r')
{
mcview_get_byte_indexed (view, current.cc_offset, 1, &nextc);
/* Ignore '\r' if it is followed by '\r' or '\n'. If it is
* followed by anything else, it is a Mac line ending and
* produces a line break.
*/
if (nextc == '\r' || nextc == '\n')
{
next.cc_column = current.cc_column;
next.cc_nroff_column = current.cc_nroff_column;
}
else
{
next.cc_line = current.cc_line + 1;
next.cc_column = 0;
next.cc_nroff_column = 0;
}
}
else if (nroff_state == NROFF_BACKSPACE)
{
next.cc_nroff_column = current.cc_nroff_column - 1;
}
else if (c == '\t')
{
next.cc_column = mcview_offset_rounddown (current.cc_column, 8) + 8;
next.cc_nroff_column = mcview_offset_rounddown (current.cc_nroff_column, 8) + 8;
}
else if (c == '\n')
{
next.cc_line = current.cc_line + 1;
next.cc_column = 0;
next.cc_nroff_column = 0;
}
else
{
/* Use all default values from above */
}
switch (nroff_state)
{
case NROFF_START:
case NROFF_CONTINUATION:
nroff_state = mcview_is_nroff_sequence (view, current.cc_offset)
? NROFF_BACKSPACE : NROFF_START;
break;
case NROFF_BACKSPACE:
nroff_state = NROFF_CONTINUATION;
break;
}
/* Cache entries must guarantee that for each i < j,
* line[i] <= line[j] and column[i] < column[j]. In the case of
* nroff sequences and '\r' characters, this is not guaranteed,
* so we cannot save them. */
if (nroff_state == NROFF_START && c != '\r')
entry = next;
}
if (i + 1 == cache->size && entry.cc_offset != cache->cache[i]->cc_offset)
{
mcview_ccache_add_entry (cache, cache->size, &entry);
if (!tty_got_interrupt ())
goto retry;
}
tty_disable_interrupt_key ();
if (lookup_what == CCACHE_OFFSET)
{
coord->cc_offset = current.cc_offset;
}
else
{
coord->cc_line = current.cc_line;
coord->cc_column = current.cc_column;
coord->cc_nroff_column = current.cc_nroff_column;
}
}
void
init_subshell (void)
{
/* This must be remembered across calls to init_subshell() */
static char pty_name[BUF_SMALL];
/* Must be considerably longer than BUF_SMALL (128) to support fancy shell prompts */
char precmd[BUF_MEDIUM];
switch (check_sid ())
{
case 1:
mc_global.tty.use_subshell = FALSE;
return;
case 2:
mc_global.tty.use_subshell = FALSE;
mc_global.midnight_shutdown = TRUE;
return;
default:
break;
}
/* Take the current (hopefully pristine) tty mode and make */
/* a raw mode based on it now, before we do anything else with it */
init_raw_mode ();
if (mc_global.tty.subshell_pty == 0)
{ /* First time through */
if (mc_global.shell->type == SHELL_NONE)
return;
/* Open a pty for talking to the subshell */
/* FIXME: We may need to open a fresh pty each time on SVR4 */
mc_global.tty.subshell_pty = pty_open_master (pty_name);
if (mc_global.tty.subshell_pty == -1)
{
fprintf (stderr, "Cannot open master side of pty: %s\r\n", unix_error_string (errno));
mc_global.tty.use_subshell = FALSE;
return;
}
subshell_pty_slave = pty_open_slave (pty_name);
if (subshell_pty_slave == -1)
{
fprintf (stderr, "Cannot open slave side of pty %s: %s\r\n",
pty_name, unix_error_string (errno));
mc_global.tty.use_subshell = FALSE;
return;
}
/* Create a pipe for receiving the subshell's CWD */
if (mc_global.shell->type == SHELL_TCSH)
{
g_snprintf (tcsh_fifo, sizeof (tcsh_fifo), "%s/mc.pipe.%d",
mc_tmpdir (), (int) getpid ());
if (mkfifo (tcsh_fifo, 0600) == -1)
{
fprintf (stderr, "mkfifo(%s) failed: %s\r\n", tcsh_fifo, unix_error_string (errno));
mc_global.tty.use_subshell = FALSE;
return;
}
/* Opening the FIFO as O_RDONLY or O_WRONLY causes deadlock */
if ((subshell_pipe[READ] = open (tcsh_fifo, O_RDWR)) == -1
|| (subshell_pipe[WRITE] = open (tcsh_fifo, O_RDWR)) == -1)
{
fprintf (stderr, _("Cannot open named pipe %s\n"), tcsh_fifo);
perror (__FILE__ ": open");
mc_global.tty.use_subshell = FALSE;
return;
}
}
else if (pipe (subshell_pipe)) /* subshell_type is BASH, ASH_BUSYBOX, DASH or ZSH */
{
perror (__FILE__ ": couldn't create pipe");
mc_global.tty.use_subshell = FALSE;
return;
}
}
/* Fork the subshell */
subshell_alive = TRUE;
subshell_stopped = FALSE;
subshell_pid = fork ();
if (subshell_pid == -1)
{
fprintf (stderr, "Cannot spawn the subshell process: %s\r\n", unix_error_string (errno));
/* We exit here because, if the process table is full, the */
/* other method of running user commands won't work either */
exit (EXIT_FAILURE);
}
if (subshell_pid == 0)
{
/* We are in the child process */
init_subshell_child (pty_name);
}
init_subshell_precmd (precmd, BUF_MEDIUM);
write_all (mc_global.tty.subshell_pty, precmd, strlen (precmd));
/* Wait until the subshell has started up and processed the command */
subshell_state = RUNNING_COMMAND;
tty_enable_interrupt_key ();
if (!feed_subshell (QUIETLY, TRUE))
{
mc_global.tty.use_subshell = FALSE;
}
tty_disable_interrupt_key ();
if (!subshell_alive)
mc_global.tty.use_subshell = FALSE; /* Subshell died instantly, so don't use it */
}
void
mcview_do_search (mcview_t * view)
{
off_t search_start = 0;
gboolean isFound = FALSE;
gboolean need_search_again = TRUE;
Dlg_head *d = NULL;
size_t match_len;
if (verbose)
{
d = create_message (D_NORMAL, _("Search"), _("Searching %s"), view->last_search_string);
tty_refresh ();
}
/*for avoid infinite search loop we need to increase or decrease start offset of search */
if (view->search_start != 0)
{
if (!view->text_nroff_mode)
search_start = view->search_start + (mcview_search_options.backwards ? -2 : 0);
else
{
if (mcview_search_options.backwards)
{
mcview_nroff_t *nroff;
nroff = mcview_nroff_seq_new_num (view, view->search_start);
if (mcview_nroff_seq_prev (nroff) != -1)
search_start =
-(mcview__get_nroff_real_len (view, nroff->index - 1, 2) +
nroff->char_width + 1);
else
search_start = -2;
mcview_nroff_seq_free (&nroff);
}
else
{
search_start = mcview__get_nroff_real_len (view, view->search_start + 1, 2);
}
search_start += view->search_start;
}
}
if (mcview_search_options.backwards && (int) search_start < 0)
search_start = 0;
/* Compute the percent steps */
mcview_search_update_steps (view);
view->update_activate = 0;
tty_enable_interrupt_key ();
do
{
off_t growbufsize;
if (view->growbuf_in_use)
growbufsize = mcview_growbuf_filesize (view);
else
growbufsize = view->search->original_len;
if (mcview_find (view, search_start, &match_len))
{
mcview_search_show_result (view, &d, match_len);
need_search_again = FALSE;
isFound = TRUE;
break;
}
if (view->search->error_str == NULL)
break;
search_start = growbufsize - view->search->original_len;
if (search_start <= 0)
{
search_start = 0;
break;
}
}
while (mcview_may_still_grow (view));
if (view->search_start != 0 && !isFound && need_search_again
&& !mcview_search_options.backwards)
{
int result;
mcview_update (view);
result =
query_dialog (_("Search done"), _("Continue from beginning?"), D_NORMAL, 2, _("&Yes"),
_("&No"));
if (result != 0)
isFound = TRUE;
else
search_start = 0;
}
if (!isFound && view->search->error_str != NULL && mcview_find (view, search_start, &match_len))
{
mcview_search_show_result (view, &d, match_len);
isFound = TRUE;
}
tty_disable_interrupt_key ();
if (verbose)
{
dlg_run_done (d);
destroy_dlg (d);
}
if (!isFound && view->search->error_str != NULL)
message (D_NORMAL, _("Search"), "%s", view->search->error_str);
view->dirty++;
mcview_update (view);
}
