Mercurial > masqmail

annotate src/listen.c @ 221:8742d2cee364

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
added a note to the long vs. int question in md5.h Solar Designer explained to me in privat conversation that the int had performed much better on some systems and that 16bit ints are very rare. Still I like using the long.
author meillo@marmaro.de
date Fri, 23 Jul 2010 10:53:04 +0200
parents dcb315792513
children fc1c6425c024
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
1 /* MasqMail
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
2 Copyright (C) 1999/2000 Oliver Kurth
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
3
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
4 This program is free software; you can redistribute it and/or modify
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
5 it under the terms of the GNU General Public License as published by
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
6 the Free Software Foundation; either version 2 of the License, or
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
7 (at your option) any later version.
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
8
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
9 This program is distributed in the hope that it will be useful,
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
12 GNU General Public License for more details.
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
13
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
14 You should have received a copy of the GNU General Public License
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
15 along with this program; if not, write to the Free Software
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
17 */
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
18
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
19 #include <sys/wait.h>
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
20 #include <sys/types.h>
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
21
15
f671821d8222 code beautifying; 0 -> \0 if appropriate
meillo@marmaro.de
parents: 10
diff changeset
22 #include "masqmail.h"
f671821d8222 code beautifying; 0 -> \0 if appropriate
meillo@marmaro.de
parents: 10
diff changeset
23
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
24 static int volatile sighup_seen = 0;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
25
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
26 static void
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
27 sighup_handler(int sig)
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
28 {
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
29 sighup_seen = 1;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
30 signal(SIGHUP, sighup_handler);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
31 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
32
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
33 static void
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
34 sigchld_handler(int sig)
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
35 {
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
36 pid_t pid;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
37 int status;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
38
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
39 pid = waitpid(0, &status, 0);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
40 if (pid > 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
41 if (WEXITSTATUS(status) != EXIT_SUCCESS)
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
42 logwrite(LOG_WARNING, "process %d exited with %d\n", pid, WEXITSTATUS(status));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
43 if (WIFSIGNALED(status))
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
44 logwrite(LOG_WARNING, "process with pid %d got signal: %d\n", pid, WTERMSIG(status));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
45 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
46 signal(SIGCHLD, sigchld_handler);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
47 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
48
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
49 void
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
50 accept_connect(int listen_sock, int sock, struct sockaddr_in *sock_addr)
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
51 {
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
52 pid_t pid;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
53 int dup_sock = dup(sock);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
54 FILE *out, *in;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
55 gchar *rem_host;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
56 gchar *ident = NULL;
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
57
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
58 rem_host = g_strdup(inet_ntoa(sock_addr->sin_addr));
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
59 #ifdef ENABLE_IDENT
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
60 {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
61 gchar *id = NULL;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
62 if ((id = (gchar *) ident_id(sock, 60))) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
63 ident = g_strdup(id);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
64 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
65 logwrite(LOG_NOTICE, "connect from host %s, port %hd ident=%s\n", rem_host,
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
66 ntohs(sock_addr->sin_port), ident ? ident : "(unknown)");
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
67 }
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
68 #else
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
69 logwrite(LOG_NOTICE, "connect from host %s, port %hd\n", rem_host, ntohs(sock_addr->sin_port));
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
70 #endif
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
71
207
dcb315792513 removed commented code and replaced // by /* */
meillo@marmaro.de
parents: 204
diff changeset
72 /* start child for connection: */
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
73 signal(SIGCHLD, sigchld_handler);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
74 pid = fork();
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
75 if (pid == 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
76 close(listen_sock);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
77 out = fdopen(sock, "w");
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
78 in = fdopen(dup_sock, "r");
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
79
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
80 smtp_in(in, out, rem_host, ident);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
81
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
82 _exit(EXIT_SUCCESS);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
83 } else if (pid < 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
84 logwrite(LOG_WARNING, "could not fork for incoming smtp connection: %s\n", strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
85 }
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
86 #ifdef ENABLE_IDENT
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
87 if (ident != NULL)
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
88 g_free(ident);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
89 #endif
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
90
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
91 close(sock);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
92 close(dup_sock);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
93 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
94
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
95 void
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
96 listen_port(GList * iface_list, gint qival, char *argv[])
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
97 {
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
98 int i;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
99 fd_set active_fd_set, read_fd_set;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
100 struct timeval tm;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
101 time_t time_before, time_now;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
102 struct sockaddr_in clientname;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
103 size_t size;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
104 GList *node, *node_next;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
105 int sel_ret;
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
106
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
107 /* Create the sockets and set them up to accept connections. */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
108 FD_ZERO(&active_fd_set);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
109 for (node = g_list_first(iface_list); node; node = node_next) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
110 interface *iface = (interface *) (node->data);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
111 int sock;
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
112
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
113 node_next = g_list_next(node);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
114 if ((sock = make_server_socket(iface)) < 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
115 iface_list = g_list_remove_link(iface_list, node);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
116 g_list_free_1(node);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
117 continue;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
118 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
119 if (listen(sock, 1) < 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
120 logwrite(LOG_ALERT, "listen: (terminating): %s\n", strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
121 exit(EXIT_FAILURE);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
122 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
123 logwrite(LOG_NOTICE, "listening on interface %s:%d\n", iface->address, iface->port);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
124 DEBUG(5) debugf("sock = %d\n", sock);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
125 FD_SET(sock, &active_fd_set);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
126 }
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
127
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
128 /* setup handler for HUP signal: */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
129 signal(SIGHUP, sighup_handler);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
130 signal(SIGCHLD, sigchld_handler);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
131
15
f671821d8222 code beautifying; 0 -> \0 if appropriate
meillo@marmaro.de
parents: 10
diff changeset
132 /* now that we have our socket(s), we can give up root privileges */
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
133 if (!conf.run_as_user) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
134 if (setegid(conf.mail_gid) != 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
135 logwrite(LOG_ALERT, "could not change gid to %d: %s\n", conf.mail_gid, strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
136 exit(EXIT_FAILURE);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
137 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
138 if (seteuid(conf.mail_uid) != 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
139 logwrite(LOG_ALERT, "could not change uid to %d: %s\n", conf.mail_uid, strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
140 exit(EXIT_FAILURE);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
141 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
142 }
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
143
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
144 /* sel_ret = 0; */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
145 time(&time_before);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
146 time_before -= qival;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
147 sel_ret = -1;
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
148
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
149 while (1) {
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
150
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
151 /* if we were interrupted by an incoming connection (or a signal)
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
152 we have to recalculate the time until the next queue run should
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
153 occur. select may put a value into tm, but doc for select() says
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
154 we should not use it. */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
155 if (qival > 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
156 time(&time_now);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
157 if (sel_ret == 0) { /* we are either just starting or did a queue run */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
158 tm.tv_sec = qival;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
159 tm.tv_usec = 0;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
160 time_before = time_now;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
161 } else {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
162 tm.tv_sec = qival - (time_now - time_before);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
163 tm.tv_usec = 0;
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
164
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
165 /* race condition, very unlikely (but possible): */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
166 if (tm.tv_sec < 0)
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
167 tm.tv_sec = 0;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
168 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
169 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
170 /* Block until input arrives on one or more active sockets,
15
f671821d8222 code beautifying; 0 -> \0 if appropriate
meillo@marmaro.de
parents: 10
diff changeset
171 or signal arrives, or queuing interval time elapsed (if qival > 0) */
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
172 read_fd_set = active_fd_set;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
173 if ((sel_ret = select(FD_SETSIZE, &read_fd_set, NULL, NULL, qival > 0 ? &tm : NULL)) < 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
174 if (errno != EINTR) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
175 logwrite(LOG_ALERT, "select: (terminating): %s\n", strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
176 exit(EXIT_FAILURE);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
177 } else {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
178 if (sighup_seen) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
179 logwrite(LOG_NOTICE, "HUP signal received. Restarting daemon\n");
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
180
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
181 for (i = 0; i < FD_SETSIZE; i++)
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
182 if (FD_ISSET(i, &active_fd_set))
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
183 close(i);
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
184
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
185 execv(argv[0], &(argv[0]));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
186 logwrite(LOG_ALERT, "restarting failed: %s\n", strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
187 exit(EXIT_FAILURE);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
188 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
189 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
190 } else if (sel_ret > 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
191 for (i = 0; i < FD_SETSIZE; i++) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
192 if (FD_ISSET(i, &read_fd_set)) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
193 int sock = i;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
194 int new;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
195 size = sizeof(clientname);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
196 new = accept(sock, (struct sockaddr *) &clientname, &size);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
197 if (new < 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
198 logwrite(LOG_ALERT, "accept: (ignoring): %s\n", strerror(errno));
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
199 } else
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
200 accept_connect(sock, new, &clientname);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
201 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
202 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
203 } else {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
204 /* If select returns 0, the interval time has elapsed.
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
205 We start a new queue runner process */
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
206 int pid;
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
207 signal(SIGCHLD, sigchld_handler);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
208 if ((pid = fork()) == 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
209 queue_run();
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
210
10
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
211 _exit(EXIT_SUCCESS);
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
212 } else if (pid < 0) {
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
213 logwrite(LOG_ALERT, "could not fork for queue run");
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
214 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
215 }
26e34ae9a3e3 changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents: 0
diff changeset
216 }
0
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
217 }