rxvt-unicode/src/rxvtc.C

/*----------------------------------------------------------------------*
 * File:        rxvtc.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 2003-2006 Marc Lehmann <schmorp@schmorp.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#include "../config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>

#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>

#include <libptytty.h>

#include "rxvtdaemon.h"

#define STATUS_SUCCESS           0
#define STATUS_FAILURE           1
#define STATUS_CONNECTION_FAILED 2

struct client : rxvt_connection
{
  client ();
};

client::client ()
{
  sockaddr_un sa;
  char *sockname = rxvt_connection::unix_sockname ();

  if (strlen (sockname) >= sizeof (sa.sun_path))
    {
      fputs ("socket name too long, aborting.\n", stderr);
      exit (STATUS_FAILURE);
    }

  if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
    {
      perror ("unable to create communications socket");
      exit (STATUS_FAILURE);
    }

  sa.sun_family = AF_UNIX;
  strcpy (sa.sun_path, sockname);
  free (sockname);

  if (connect (fd, (sockaddr *)&sa, sizeof (sa)))
    {
      perror ("unable to connect to the rxvt-unicode daemon");
      exit (STATUS_CONNECTION_FAILED);
    }
}

extern char **environ;

int
main (int argc, const char *const *argv)
{
  // instead of getcwd we could opendir (".") and pass the fd for fchdir *g*
  char cwd[PATH_MAX];

  if (!getcwd (cwd, sizeof (cwd)))
    {
      perror ("unable to determine current working directory");
      exit (STATUS_FAILURE);
    }

  client c;

  {
    sigset_t ss;

    sigemptyset (&ss);
    sigaddset (&ss, SIGHUP);
    sigaddset (&ss, SIGPIPE);
    sigprocmask (SIG_BLOCK, &ss, 0);
  }

  if (argc >= 2 && !strcmp (argv[1], "-k"))
    {
      c.send ("QUIT");
      return 0;
    }

  c.send ("NEW");

  for (char **var = environ; *var; var++)
    c.send ("ENV"), c.send (*var);

  const char *base = strrchr (argv[0], '/');
  base = base ? base + 1 : argv[0];
  c.send ("ARG"), c.send (strcmp (base, RXVTNAME "c") ? base : RXVTNAME);

  c.send ("ARG"), c.send ("-cd");
  c.send ("ARG"), c.send (cwd);

  for (int i = 1; i < argc; i++)
    c.send ("ARG"), c.send (argv[i]);

  c.send ("END");

  auto_str tok;
  int cint;

  for (;;)
    if (!c.recv (tok))
      {
        fprintf (stderr, "protocol error: unexpected eof from server.\n");
        break;
      }
    else if (!strcmp (tok, "MSG") && c.recv (tok))
      fprintf (stderr, "%s", (const char *)tok);
    else if (!strcmp (tok, "GETFD") && c.recv (cint))
      {
        if (!ptytty::send_fd (c.fd, cint))
          {
            fprintf (stderr, "unable to send fd %d: ", cint); perror (0);
            exit (STATUS_FAILURE);
          }
      }
    else if (!strcmp (tok, "END"))
      {
        int success;

        if (c.recv (success))
          exit (success ? STATUS_SUCCESS : STATUS_FAILURE);
      }
    else
      {
        fprintf (stderr, "protocol error: received unsupported token '%s'.\n", (const char *)tok);
        break;
      }

  return STATUS_FAILURE;
}

Revision:	1.38
Committed:	Fri Jul 23 19:18:52 2021 UTC (5 years, 2 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rxvt-unicode-rel-9_29, rxvt-unicode-rel-9_30, HEAD
Changes since 1.37:	+2 -1 lines
Log Message:	Unbundle libptytty
#	User	Rev	Content
1	root	1.25	/----------------------------------------------------------------------
2	pcg	1.11	* File: rxvtc.C
3			----------------------------------------------------------------------
4			*
5			* All portions of code are copyright by their respective author/s.
6	root	1.33	* Copyright (c) 2003-2006 Marc Lehmann <schmorp@schmorp.de>
7	pcg	1.11	*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10	root	1.36	* the Free Software Foundation; either version 3 of the License, or
11	pcg	1.11	* (at your option) any later version.
12			*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21			----------------------------------------------------------------------/
22
23	pcg	1.8	#include "../config.h"
24	sf-exg	1.35	#include <stdio.h>
25			#include <stdlib.h>
26			#include <string.h>
27			#include <signal.h>
28	pcg	1.1
29			#include <unistd.h>
30			#include <sys/socket.h>
31			#include <sys/un.h>
32
33	sf-exg	1.38	#include <libptytty.h>
34
35	root	1.21	#include "rxvtdaemon.h"
36
37	root	1.23	#define STATUS_SUCCESS 0
38			#define STATUS_FAILURE 1
39			#define STATUS_CONNECTION_FAILED 2
40
41	root	1.29	struct client : rxvt_connection
42			{
43	pcg	1.1	client ();
44			};
45
46			client::client ()
47			{
48	root	1.26	sockaddr_un sa;
49			char *sockname = rxvt_connection::unix_sockname ();
50	ayin	1.28
51	ayin	1.31	if (strlen (sockname) >= sizeof (sa.sun_path))
52	root	1.26	{
53			fputs ("socket name too long, aborting.\n", stderr);
54			exit (STATUS_FAILURE);
55			}
56	ayin	1.28
57	root	1.20	if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
58	pcg	1.1	{
59	pcg	1.5	perror ("unable to create communications socket");
60	root	1.23	exit (STATUS_FAILURE);
61	pcg	1.1	}
62
63			sa.sun_family = AF_UNIX;
64	pcg	1.4	strcpy (sa.sun_path, sockname);
65			free (sockname);
66	pcg	1.1
67			if (connect (fd, (sockaddr *)&sa, sizeof (sa)))
68			{
69	root	1.13	perror ("unable to connect to the rxvt-unicode daemon");
70	root	1.23	exit (STATUS_CONNECTION_FAILED);
71	pcg	1.1	}
72			}
73
74	pcg	1.3	extern char **environ;
75
76	pcg	1.1	int
77	pcg	1.7	main (int argc, const char const argv)
78	pcg	1.1	{
79	root	1.30	// instead of getcwd we could opendir (".") and pass the fd for fchdir g
80			char cwd[PATH_MAX];
81
82			if (!getcwd (cwd, sizeof (cwd)))
83			{
84			perror ("unable to determine current working directory");
85			exit (STATUS_FAILURE);
86			}
87
88	pcg	1.1	client c;
89	root	1.30
90	pcg	1.3	{
91			sigset_t ss;
92
93	pcg	1.6	sigemptyset (&ss);
94	pcg	1.3	sigaddset (&ss, SIGHUP);
95	root	1.27	sigaddset (&ss, SIGPIPE);
96	pcg	1.3	sigprocmask (SIG_BLOCK, &ss, 0);
97			}
98
99	sf-exg	1.37	if (argc >= 2 && !strcmp (argv[1], "-k"))
100			{
101			c.send ("QUIT");
102			return 0;
103			}
104
105	pcg	1.1	c.send ("NEW");
106	pcg	1.3
107	root	1.16	for (char *var = environ; var; var++)
108			c.send ("ENV"), c.send (*var);
109	pcg	1.1
110	root	1.13	const char *base = strrchr (argv[0], '/');
111			base = base ? base + 1 : argv[0];
112			c.send ("ARG"), c.send (strcmp (base, RXVTNAME "c") ? base : RXVTNAME);
113
114	root	1.32	c.send ("ARG"), c.send ("-cd");
115			c.send ("ARG"), c.send (cwd);
116
117	root	1.13	for (int i = 1; i < argc; i++)
118	pcg	1.2	c.send ("ARG"), c.send (argv[i]);
119
120	pcg	1.1	c.send ("END");
121	pcg	1.8
122			auto_str tok;
123	root	1.17	int cint;
124	pcg	1.8
125			for (;;)
126			if (!c.recv (tok))
127			{
128			fprintf (stderr, "protocol error: unexpected eof from server.\n");
129			break;
130			}
131			else if (!strcmp (tok, "MSG") && c.recv (tok))
132			fprintf (stderr, "%s", (const char *)tok);
133	root	1.17	else if (!strcmp (tok, "GETFD") && c.recv (cint))
134			{
135	root	1.22	if (!ptytty::send_fd (c.fd, cint))
136	root	1.17	{
137			fprintf (stderr, "unable to send fd %d: ", cint); perror (0);
138	root	1.23	exit (STATUS_FAILURE);
139	root	1.17	}
140			}
141	pcg	1.8	else if (!strcmp (tok, "END"))
142			{
143			int success;
144	root	1.19
145	pcg	1.8	if (c.recv (success))
146	root	1.23	exit (success ? STATUS_SUCCESS : STATUS_FAILURE);
147	pcg	1.8	}
148			else
149			{
150	root	1.17	fprintf (stderr, "protocol error: received unsupported token '%s'.\n", (const char *)tok);
151	pcg	1.8	break;
152			}
153
154	root	1.23	return STATUS_FAILURE;
155	pcg	1.1	}
156