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Comparing gvpe/src/util.C (file contents):
Revision 1.4 by pcg, Wed Apr 2 03:06:22 2003 UTC vs.
Revision 1.19 by pcg, Wed Mar 23 21:55:39 2005 UTC

1/* 1/*
2 util.C -- process management and other utility functions 2 util.C -- process management and other utility functions
3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
3 4
4 Some of these are taken from tinc, see the AUTHORS file. 5 Some of these are taken from tinc, see the AUTHORS file.
5 6
7 This file is part of GVPE.
8
6 This program is free software; you can redistribute it and/or modify 9 GVPE is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by 10 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or 11 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version. 12 (at your option) any later version.
10 13
11 This program is distributed in the hope that it will be useful, 14 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details. 17 GNU General Public License for more details.
15 18
16 You should have received a copy of the GNU General Public License 19 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software 20 along with gvpe; if not, write to the Free Software
18 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19*/ 22*/
20 23
21#include "config.h" 24#include "config.h"
22 25
23#include <cstdio> 26#include <cstdio>
27#include <cstdlib>
24#include <cstring> 28#include <cstring>
25 29
26#include <errno.h> 30#include <errno.h>
27#include <signal.h> 31#include <signal.h>
28#include <sys/types.h> 32#include <sys/types.h>
29#include <sys/wait.h> 33#include <sys/wait.h>
30#include <unistd.h> 34#include <unistd.h>
31#include <time.h> 35#include <time.h>
32#include <sys/socket.h>
33#include <netinet/in.h>
34#include <arpa/inet.h>
35 36
36 37#include "netcompat.h"
37#include <sys/mman.h>
38 38
39#include "gettext.h" 39#include "gettext.h"
40#include "pidfile.h" 40#include "pidfile.h"
41#include "dropin.h" 41#include "dropin.h"
42 42
43#include "global.h" 43#include "global.h"
44#include "conf.h" 44#include "conf.h"
45#include "util.h"
45#include "slog.h" 46#include "slog.h"
46#include "protocol.h"
47 47
48int 48int
49write_pidfile (void) 49write_pidfile (void)
50{ 50{
51 int pid; 51 int pid;
52 52
53 pid = check_pid (pidfilename); 53 pid = check_pid (conf.pidfilename);
54 54
55 if (pid) 55 if (pid)
56 { 56 {
57 fprintf (stderr, _("A vped is already running with pid %d.\n"), pid); 57 fprintf (stderr, _("A gvpe daemon is already running with pid %d.\n"), pid);
58 return 1; 58 return 1;
59 } 59 }
60 60
61 /* if it's locked, write-protected, or whatever */ 61 /* if it's locked, write-protected, or whatever */
62 if (!write_pid (pidfilename)) 62 if (!write_pid (conf.pidfilename))
63 return 1; 63 return 1;
64 64
65 return 0; 65 return 0;
66} 66}
67 67
68int 68int
69kill_other (int signal) 69kill_other (int signal)
70{ 70{
71 int pid; 71 int pid;
72 72
73 pid = read_pid (pidfilename); 73 pid = read_pid (conf.pidfilename);
74 74
75 if (!pid) 75 if (!pid)
76 { 76 {
77 fprintf (stderr, _("No other vped is running.\n")); 77 fprintf (stderr, _("No other gvpe daemon is running.\n"));
78 return 1; 78 return 1;
79 } 79 }
80 80
81 errno = 0; /* No error, sometimes errno is only changed on error */ 81 errno = 0; /* No error, sometimes errno is only changed on error */
82 82
83 /* ESRCH is returned when no process with that pid is found */ 83 /* ESRCH is returned when no process with that pid is found */
84 if (kill (pid, signal) && errno == ESRCH) 84 if (kill (pid, signal) && errno == ESRCH)
85 { 85 {
86 fprintf (stderr, _("The vped is no longer running. ")); 86 fprintf (stderr, _("The gvpe daemon is no longer running. "));
87 87
88 fprintf (stderr, _("Removing stale lock file.\n")); 88 fprintf (stderr, _("Removing stale lock file.\n"));
89 remove_pid (pidfilename); 89 remove_pid (conf.pidfilename);
90 } 90 }
91 91
92 return 0; 92 return 0;
93} 93}
94 94
… …
114 return -1; 114 return -1;
115 } 115 }
116 116
117 /* Now UPDATE the pid in the pidfile, because we changed it... */ 117 /* Now UPDATE the pid in the pidfile, because we changed it... */
118 118
119 if (!write_pid (pidfilename)) 119 if (!write_pid (conf.pidfilename))
120 return -1; 120 return -1;
121 121
122 log_to (LOGTO_SYSLOG); 122 log_to (LOGTO_SYSLOG);
123 } 123 }
124 else 124 else
125 log_to (LOGTO_SYSLOG | LOGTO_STDERR); 125 log_to (LOGTO_SYSLOG | LOGTO_STDERR);
126 126
127 slog (L_INFO, _("vped %s (%s %s) starting"), VERSION, __DATE__, __TIME__); 127 slog (L_INFO, _("gvpe daemon %s (%s %s) starting"), VERSION, __DATE__, __TIME__);
128 128
129 return 0; 129 return 0;
130} 130}
131 131
132void
133make_names (void)
134{
135 if (!pidfilename)
136 pidfilename = LOCALSTATEDIR "/run/vped.pid";
137
138 if (!confbase)
139 asprintf (&confbase, "%s/vpe", CONFDIR);
140}
141
142void run_script (const run_script_cb &cb, bool wait) 132bool run_script (const run_script_cb &cb, bool wait)
143{ 133{
144 int pid; 134 int pid;
145 135
146 if ((pid = fork ()) == 0) 136 if ((pid = fork ()) == 0)
147 { 137 {
148 char *filename; 138 execl ("/bin/sh", "/bin/sh", "-c", cb (), (char *) 0);
149 asprintf (&filename, "%s/%s", confbase, cb(0)); 139 exit (EXIT_FAILURE);
150 execl (filename, filename, (char *) 0);
151 exit (255);
152 } 140 }
153 else if (pid > 0) 141 else if (pid > 0)
154 { 142 {
155 if (wait) 143 if (wait)
156 { 144 {
145 int status;
146
157 waitpid (pid, 0, 0); 147 if (waitpid (pid, &status, 0) < 0)
158 /* TODO: check status */ 148 {
149 slog (L_WARN, _("waiting for an external command failed: %s."),
150 strerror (errno));
151 return false;
152 }
153 else if (!WIFEXITED (status) || WEXITSTATUS (status) != EXIT_SUCCESS)
154 {
155 slog (L_WARN, _("external command returned with exit status %d (%04x)."),
156 WEXITSTATUS (status), status);
157 return false;
158 }
159 } 159 }
160 } 160 }
161
162 return true;
161} 163}
164
165#if ENABLE_HTTP_PROXY
166// works like strdup
167u8 *
168base64_encode (const u8 *data, unsigned int len)
169{
170 const static char base64[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
171
172 unsigned int t, i;
173 const u8 *end = data + len;
174 u8 *res = new u8 [4 * ((len + 2) / 3) + 1];
175 u8 *out = res;
176
177 while (data <= end - 3)
178 {
179 t = (((data[0] << 8) | data[1]) << 8) | data[2];
180 data += 3;
181
182 *out++ = base64[(t >> 18) & 0x3f];
183 *out++ = base64[(t >> 12) & 0x3f];
184 *out++ = base64[(t >> 6) & 0x3f];
185 *out++ = base64[(t ) & 0x3f];
186 }
187
188 for (t = 0, i = 0; data < end; i++)
189 t = (t << 8) | *data++;
190
191 switch (i)
192 {
193 case 2:
194 *out++ = base64[(t >> 10) & 0x3f];
195 *out++ = base64[(t >> 4) & 0x3f];
196 *out++ = base64[(t << 2) & 0x3f];
197 *out++ = '=';
198 break;
199 case 1:
200 *out++ = base64[(t >> 2) & 0x3f];
201 *out++ = base64[(t << 4) & 0x3f];
202 *out++ = '=';
203 *out++ = '=';
204 break;
205 }
206
207 *out++ = 0;
208
209 return res;
210}
211#endif
212
213void
214id2mac (unsigned int id, void *m)
215{
216 mac &p = *(mac *)m;
217
218 if (id)
219 {
220 p[0] = 0xfe;
221 p[1] = 0xfd;
222 p[2] = 0x80;
223 p[3] = 0x00;
224 p[4] = id >> 8;
225 p[5] = id;
226 }
227 else
228 {
229 p[0] = 0xff;
230 p[1] = 0xff;
231 p[2] = 0xff;
232 p[3] = 0xff;
233 p[4] = 0xff;
234 p[5] = 0xff;
235 }
236}
237

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