rxvt-unicode/src/rxvtd.C

#include "../config.h"
#include "rxvt.h"
#include "rxvtdaemon.h"
#include "iom.h"

#include <cstdio>
#include <cstdlib>
#include <cstdarg>
#include <cstring>

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

#include <cerrno>

extern char **environ;

struct server : rxvt_connection {
  void read_cb (io_watcher &w, short revents); io_watcher read_ev;

  server (int fd)
  : read_ev (this, &server::read_cb)
  {
    this->fd = fd;
    read_ev.start (fd, EVENT_READ);
  }

  void err (const char *format = 0, ...);
};

struct unix_listener {
  int fd;

  void accept_cb (io_watcher &w, short revents); io_watcher accept_ev;

  unix_listener (const char *sockname);
};

unix_listener::unix_listener (const char *sockname)
: accept_ev (this, &unix_listener::accept_cb)
{
  if ((fd = socket (PF_LOCAL, SOCK_STREAM, 0)) < 0)
    {
      perror ("unable to create listening socket");
      exit (EXIT_FAILURE);
    }

  sockaddr_un sa;

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

  unlink (rxvt_connection::unix_sockname ());

  mode_t omask = umask (0077);

  if (bind (fd, (sockaddr *)&sa, sizeof (sa)))
    {
      perror ("unable to bind listening socket");
      exit (EXIT_FAILURE);
    }

  umask (omask);

  if (listen (fd, 5))
    {
      perror ("unable to listen on socket");
      exit (EXIT_FAILURE);
    }

  accept_ev.start (fd, EVENT_READ);
}

void unix_listener::accept_cb (io_watcher &w, short revents)
{
  int fd2 = accept (fd, 0, 0);

  if (fd2 >= 0)
    new server (fd2);
}

void server::err (const char *format, ...)
{
  if (format)
    {
      char err[1024];

      va_list ap;
      va_start (ap, format);
      vsnprintf (err, 1024, format, ap);
      va_end (ap);

      send ("ERR"), send (err);
    }

  close (fd);
  delete this;
}

void server::read_cb (io_watcher &w, short revents)
{
  auto_str tok;

  if (recv (tok))
    {
      if (!strcmp (tok, "NEW"))
        {
          stringvec *argv = new stringvec;
          stringvec *envv = new stringvec;
            
          for (;;)
            {
              if (!recv (tok))
                return err ();

              if (!strcmp (tok, "END"))
                break;
              else if (!strcmp (tok, "ENV") && recv (tok))
                envv->push_back (tok.get ());
              else if (!strcmp (tok, "CWD") && recv (tok))
                {
                  if (chdir (tok))
                    err ("unable to change to working directory to '%s': %s",
                         (char *)tok, strerror (errno));
                }
              else if (!strcmp (tok, "ARG") && recv (tok))
                argv->push_back (tok.get ());
              else
                return err ("protocol error: unexpected NEW token");
            }

          envv->push_back (0);

          {
            char **old_environ = environ;
            environ = envv->begin ();

            rxvt_term *term = rxvt_init (argv->size (), argv->begin ());

            term->argv = argv;
            term->envv = envv;

            environ = old_environ;
          }
        }
      else
        return err ("protocol error: request '%s' unsupported.", (char *)tok);
    }
  else
    return err ();
}

int
main (int argc, const char *const *argv)
{
  rxvt_init_signals ();

  char *sockname = rxvt_connection::unix_sockname ();
  unix_listener l (sockname);
  printf ("rxvtd listening on %s.\n", sockname);
  free (sockname);

  iom.loop ();

#if 0
  if (rxvt_init (argc, argv) == NULL)
      return EXIT_FAILURE;

  dR;
  rxvt_main_loop (aR);  /* main processing loop */
#endif
  return EXIT_SUCCESS;
}

Revision:	1.9
Committed:	Fri Feb 13 13:28:17 2004 UTC (20 years, 3 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_1_0, rel-2_4, rel-2_2, rel-2_3, rel-2_0, rel-1_9
Changes since 1.8:	+12 -9 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.9	#include "../config.h"
2			#include "rxvt.h"
3	pcg	1.1	#include "rxvtdaemon.h"
4			#include "iom.h"
5
6			#include <cstdio>
7			#include <cstdlib>
8	pcg	1.3	#include <cstdarg>
9			#include <cstring>
10	pcg	1.1
11			#include <unistd.h>
12	pcg	1.5	#include <sys/types.h>
13			#include <sys/stat.h>
14	pcg	1.1	#include <sys/socket.h>
15			#include <sys/un.h>
16
17	pcg	1.3	#include <cerrno>
18
19			extern char **environ;
20
21	pcg	1.1	struct server : rxvt_connection {
22			void read_cb (io_watcher &w, short revents); io_watcher read_ev;
23
24			server (int fd)
25			: read_ev (this, &server::read_cb)
26			{
27			this->fd = fd;
28			read_ev.start (fd, EVENT_READ);
29			}
30
31	pcg	1.3	void err (const char *format = 0, ...);
32	pcg	1.1	};
33
34	pcg	1.5	struct unix_listener {
35	pcg	1.1	int fd;
36
37			void accept_cb (io_watcher &w, short revents); io_watcher accept_ev;
38
39	pcg	1.5	unix_listener (const char *sockname);
40	pcg	1.1	};
41
42	pcg	1.5	unix_listener::unix_listener (const char *sockname)
43			: accept_ev (this, &unix_listener::accept_cb)
44	pcg	1.1	{
45			if ((fd = socket (PF_LOCAL, SOCK_STREAM, 0)) < 0)
46			{
47			perror ("unable to create listening socket");
48			exit (EXIT_FAILURE);
49			}
50
51			sockaddr_un sa;
52
53			sa.sun_family = AF_UNIX;
54	pcg	1.5	strcpy (sa.sun_path, sockname);
55	pcg	1.1
56			unlink (rxvt_connection::unix_sockname ());
57
58	pcg	1.5	mode_t omask = umask (0077);
59
60	pcg	1.1	if (bind (fd, (sockaddr *)&sa, sizeof (sa)))
61			{
62			perror ("unable to bind listening socket");
63			exit (EXIT_FAILURE);
64			}
65
66	pcg	1.5	umask (omask);
67
68	pcg	1.1	if (listen (fd, 5))
69			{
70			perror ("unable to listen on socket");
71			exit (EXIT_FAILURE);
72			}
73
74			accept_ev.start (fd, EVENT_READ);
75			}
76
77	pcg	1.5	void unix_listener::accept_cb (io_watcher &w, short revents)
78	pcg	1.1	{
79			int fd2 = accept (fd, 0, 0);
80
81			if (fd2 >= 0)
82			new server (fd2);
83			}
84
85	pcg	1.3	void server::err (const char *format, ...)
86	pcg	1.1	{
87	pcg	1.3	if (format)
88			{
89			char err[1024];
90
91			va_list ap;
92			va_start (ap, format);
93			vsnprintf (err, 1024, format, ap);
94			va_end (ap);
95
96			send ("ERR"), send (err);
97			}
98
99	pcg	1.1	close (fd);
100			delete this;
101			}
102
103			void server::read_cb (io_watcher &w, short revents)
104			{
105	pcg	1.2	auto_str tok;
106	pcg	1.1
107	pcg	1.2	if (recv (tok))
108	pcg	1.1	{
109	pcg	1.2	if (!strcmp (tok, "NEW"))
110	pcg	1.1	{
111	pcg	1.9	stringvec *argv = new stringvec;
112			stringvec *envv = new stringvec;
113	pcg	1.2
114			for (;;)
115			{
116			if (!recv (tok))
117			return err ();
118
119			if (!strcmp (tok, "END"))
120			break;
121	pcg	1.3	else if (!strcmp (tok, "ENV") && recv (tok))
122	pcg	1.9	envv->push_back (tok.get ());
123	pcg	1.3	else if (!strcmp (tok, "CWD") && recv (tok))
124			{
125			if (chdir (tok))
126			err ("unable to change to working directory to '%s': %s",
127			(char *)tok, strerror (errno));
128			}
129	pcg	1.2	else if (!strcmp (tok, "ARG") && recv (tok))
130	pcg	1.9	argv->push_back (tok.get ());
131	pcg	1.2	else
132	pcg	1.3	return err ("protocol error: unexpected NEW token");
133	pcg	1.2	}
134
135	pcg	1.9	envv->push_back (0);
136	pcg	1.3
137			{
138			char **old_environ = environ;
139	pcg	1.9	environ = envv->begin ();
140	pcg	1.3
141	pcg	1.9	rxvt_term *term = rxvt_init (argv->size (), argv->begin ());
142
143			term->argv = argv;
144			term->envv = envv;
145	pcg	1.2
146	pcg	1.3	environ = old_environ;
147			}
148	pcg	1.1	}
149			else
150	pcg	1.3	return err ("protocol error: request '%s' unsupported.", (char *)tok);
151	pcg	1.1	}
152			else
153	pcg	1.2	return err ();
154	pcg	1.1	}
155
156			int
157	pcg	1.8	main (int argc, const char const argv)
158	pcg	1.1	{
159	pcg	1.5	rxvt_init_signals ();
160
161			char *sockname = rxvt_connection::unix_sockname ();
162			unix_listener l (sockname);
163			printf ("rxvtd listening on %s.\n", sockname);
164			free (sockname);
165
166	pcg	1.1	iom.loop ();
167
168			#if 0
169	pcg	1.8	if (rxvt_init (argc, argv) == NULL)
170	pcg	1.1	return EXIT_FAILURE;
171
172			dR;
173	pcg	1.8	rxvt_main_loop (aR); /* main processing loop */
174	pcg	1.1	#endif
175			return EXIT_SUCCESS;
176			}
177	pcg	1.7