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 {
  log_callback log_cb;

  void read_cb (io_watcher &w, short revents); io_watcher read_ev;
  void log_msg (const char *msg);

  server (int fd)
  : read_ev (this, &server::read_cb),
    log_cb (this, &server::log_msg)
  {
    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::log_msg (const char *msg)
{
  send ("MSG"), send (msg);
}

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

  send ("END", 0);
  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 = new rxvt_term;
            
            term->log_hook = &log_cb;
            term->argv = argv;
            term->envv = envv;

            bool success;
            
            try
              {
                success = term->init (argv->size (), argv->begin ());
              }
            catch (const class rxvt_failure_exception &e)
              {
                success = false;
              }

            environ = old_environ;

            if (!success)
              term->destroy ();

            send ("END"); send (success ? 1 : 0);
          }
        }
      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:	1.10
Committed:	Wed Mar 17 05:15:02 2004 UTC (20 years, 3 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_5
Changes since 1.9:	+31 -4 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	pcg	1.10	log_callback log_cb;
23
24	pcg	1.1	void read_cb (io_watcher &w, short revents); io_watcher read_ev;
25	pcg	1.10	void log_msg (const char *msg);
26	pcg	1.1
27			server (int fd)
28	pcg	1.10	: read_ev (this, &server::read_cb),
29			log_cb (this, &server::log_msg)
30	pcg	1.1	{
31			this->fd = fd;
32			read_ev.start (fd, EVENT_READ);
33			}
34
35	pcg	1.3	void err (const char *format = 0, ...);
36	pcg	1.1	};
37
38	pcg	1.5	struct unix_listener {
39	pcg	1.1	int fd;
40
41			void accept_cb (io_watcher &w, short revents); io_watcher accept_ev;
42
43	pcg	1.5	unix_listener (const char *sockname);
44	pcg	1.1	};
45
46	pcg	1.5	unix_listener::unix_listener (const char *sockname)
47			: accept_ev (this, &unix_listener::accept_cb)
48	pcg	1.1	{
49			if ((fd = socket (PF_LOCAL, SOCK_STREAM, 0)) < 0)
50			{
51			perror ("unable to create listening socket");
52			exit (EXIT_FAILURE);
53			}
54
55			sockaddr_un sa;
56
57			sa.sun_family = AF_UNIX;
58	pcg	1.5	strcpy (sa.sun_path, sockname);
59	pcg	1.1
60			unlink (rxvt_connection::unix_sockname ());
61
62	pcg	1.5	mode_t omask = umask (0077);
63
64	pcg	1.1	if (bind (fd, (sockaddr *)&sa, sizeof (sa)))
65			{
66			perror ("unable to bind listening socket");
67			exit (EXIT_FAILURE);
68			}
69
70	pcg	1.5	umask (omask);
71
72	pcg	1.1	if (listen (fd, 5))
73			{
74			perror ("unable to listen on socket");
75			exit (EXIT_FAILURE);
76			}
77
78			accept_ev.start (fd, EVENT_READ);
79			}
80
81	pcg	1.5	void unix_listener::accept_cb (io_watcher &w, short revents)
82	pcg	1.1	{
83			int fd2 = accept (fd, 0, 0);
84
85			if (fd2 >= 0)
86			new server (fd2);
87			}
88
89	pcg	1.10	void server::log_msg (const char *msg)
90			{
91			send ("MSG"), send (msg);
92			}
93
94	pcg	1.3	void server::err (const char *format, ...)
95	pcg	1.1	{
96	pcg	1.3	if (format)
97			{
98			char err[1024];
99
100			va_list ap;
101			va_start (ap, format);
102			vsnprintf (err, 1024, format, ap);
103			va_end (ap);
104
105	pcg	1.10	send ("MSG"), send (err);
106	pcg	1.3	}
107
108	pcg	1.10	send ("END", 0);
109	pcg	1.1	close (fd);
110			delete this;
111			}
112
113			void server::read_cb (io_watcher &w, short revents)
114			{
115	pcg	1.2	auto_str tok;
116	pcg	1.1
117	pcg	1.2	if (recv (tok))
118	pcg	1.1	{
119	pcg	1.2	if (!strcmp (tok, "NEW"))
120	pcg	1.1	{
121	pcg	1.9	stringvec *argv = new stringvec;
122			stringvec *envv = new stringvec;
123	pcg	1.2
124			for (;;)
125			{
126			if (!recv (tok))
127			return err ();
128
129			if (!strcmp (tok, "END"))
130			break;
131	pcg	1.3	else if (!strcmp (tok, "ENV") && recv (tok))
132	pcg	1.9	envv->push_back (tok.get ());
133	pcg	1.3	else if (!strcmp (tok, "CWD") && recv (tok))
134			{
135			if (chdir (tok))
136			err ("unable to change to working directory to '%s': %s",
137			(char *)tok, strerror (errno));
138			}
139	pcg	1.2	else if (!strcmp (tok, "ARG") && recv (tok))
140	pcg	1.9	argv->push_back (tok.get ());
141	pcg	1.2	else
142	pcg	1.3	return err ("protocol error: unexpected NEW token");
143	pcg	1.2	}
144
145	pcg	1.9	envv->push_back (0);
146	pcg	1.3
147			{
148			char **old_environ = environ;
149	pcg	1.9	environ = envv->begin ();
150	pcg	1.3
151	pcg	1.10	rxvt_term *term = new rxvt_term;
152
153			term->log_hook = &log_cb;
154	pcg	1.9	term->argv = argv;
155			term->envv = envv;
156	pcg	1.2
157	pcg	1.10	bool success;
158
159			try
160			{
161			success = term->init (argv->size (), argv->begin ());
162			}
163			catch (const class rxvt_failure_exception &e)
164			{
165			success = false;
166			}
167
168	pcg	1.3	environ = old_environ;
169	pcg	1.10
170			if (!success)
171			term->destroy ();
172
173			send ("END"); send (success ? 1 : 0);
174	pcg	1.3	}
175	pcg	1.1	}
176			else
177	pcg	1.3	return err ("protocol error: request '%s' unsupported.", (char *)tok);
178	pcg	1.1	}
179			else
180	pcg	1.2	return err ();
181	pcg	1.1	}
182
183			int
184	pcg	1.8	main (int argc, const char const argv)
185	pcg	1.1	{
186	pcg	1.5	rxvt_init_signals ();
187
188			char *sockname = rxvt_connection::unix_sockname ();
189			unix_listener l (sockname);
190			printf ("rxvtd listening on %s.\n", sockname);
191			free (sockname);
192
193	pcg	1.1	iom.loop ();
194
195			#if 0
196	pcg	1.8	if (rxvt_init (argc, argv) == NULL)
197	pcg	1.1	return EXIT_FAILURE;
198
199			dR;
200	pcg	1.8	rxvt_main_loop (aR); /* main processing loop */
201	pcg	1.1	#endif
202			return EXIT_SUCCESS;
203			}
204	pcg	1.7