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/*--------------------------------*-C-*---------------------------------* |
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* File: rxvtdaemon.C |
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*----------------------------------------------------------------------* |
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* |
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* All portions of code are copyright by their respective author/s. |
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* Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*----------------------------------------------------------------------*/ |
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|
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#include <cstdlib> |
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#include <cstring> |
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#include <cstdio> |
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|
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#include <inttypes.h> |
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#include <unistd.h> |
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#include <errno.h> |
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#include <sys/types.h> |
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#include <sys/utsname.h> |
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#include <limits.h> |
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|
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#include "rxvtdaemon.h" |
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|
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// works around linux kernel bug, returns EAGAIN on a blocking socket |
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static ssize_t |
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read_ (int fd, void *buf, size_t count) |
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{ |
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int ret; |
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|
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do |
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ret = read (fd, buf, count); |
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while (ret < 0 && errno == EAGAIN); |
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|
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return ret; |
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} |
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|
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char *rxvt_connection::unix_sockname () |
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{ |
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char name[PATH_MAX]; |
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char *path = getenv ("RXVT_SOCKET"); |
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|
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if (!path) |
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{ |
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struct utsname u; |
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uname (&u); |
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|
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path = getenv ("HOME"); |
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snprintf (name, PATH_MAX, "%s/.rxvt-unicode-%s", |
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path ? path : "/tmp", |
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u.nodename); |
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|
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path = name; |
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} |
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|
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return strdup (path); |
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} |
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|
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void rxvt_connection::send (const char *data, int len) |
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{ |
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uint8_t s[2]; |
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|
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s[0] = len >> 8; s[1] = len; |
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|
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write (fd, s, 2); |
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write (fd, data, len); |
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} |
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|
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void rxvt_connection::send (const char *data) |
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{ |
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send (data, strlen (data)); |
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} |
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|
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bool rxvt_connection::recv (auto_str &data, int *len) |
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{ |
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uint8_t s[2]; |
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int l; |
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|
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if (read_ (fd, s, 2) != 2) |
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return false; |
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|
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l = (s[0] << 8) + s[1]; |
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if (l > 4096) |
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return false; |
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|
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if (len) |
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*len = l; |
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|
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data = new char[l + 1]; |
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|
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if (!data) |
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return false; |
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|
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if (read_ (fd, data, l) != l) |
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return false; |
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|
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data[l] = 0; |
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|
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return true; |
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} |
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|
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void rxvt_connection::send (int data) |
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{ |
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uint8_t s[4]; |
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|
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s[0] = data >> 24; s[1] = data >> 16; s[2] = data >> 8; s[3] = data; |
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|
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write (fd, s, 4); |
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} |
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|
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bool rxvt_connection::recv (int &data) |
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{ |
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uint8_t s[4]; |
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|
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if (read_ (fd, s, 4) != 4) |
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return false; |
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|
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data = (((((s[0] << 8) | s[1]) << 8) | s[2]) << 8) | s[3]; |
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|
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return true; |
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} |
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|
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