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1 | /************************************************************************ |
2 | * IRC - Internet Relay Chat, servlink/servlink.c | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 1, or (at your option) | |
7 | * any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | * | |
18 | * $Id: servlink.c 6 2005-09-10 01:02:21Z nenolod $ | |
19 | */ | |
20 | ||
21 | #include "setup.h" | |
22 | ||
23 | #include <sys/types.h> | |
24 | #include <sys/time.h> | |
25 | #include <sys/socket.h> | |
26 | #include <stdlib.h> | |
27 | #include <stdio.h> | |
28 | #include <string.h> | |
29 | #include <unistd.h> | |
30 | #include <fcntl.h> | |
31 | ||
32 | #ifdef HAVE_LIBZ | |
33 | #include <zlib.h> | |
34 | #endif | |
35 | ||
36 | #include "servlink.h" | |
37 | #include "io.h" | |
38 | #include "control.h" | |
39 | ||
40 | static void usage(void); | |
41 | ||
42 | struct slink_state in_state; | |
43 | struct slink_state out_state; | |
44 | ||
45 | struct fd_table fds[3] = { | |
46 | {0, read_ctrl, NULL}, /* ctrl */ | |
47 | {0, NULL, NULL}, /* data */ | |
48 | {0, NULL, NULL}, /* net */ | |
49 | }; | |
50 | ||
51 | /* usage(); | |
52 | * | |
53 | * Display usage message | |
54 | */ | |
55 | static void | |
56 | usage(void) | |
57 | { | |
58 | fprintf(stderr, "ircd-ratbox server link v1.2\n"); | |
59 | fprintf(stderr, "2004-03-02\n"); | |
60 | fprintf(stderr, "\n"); | |
61 | fprintf(stderr, "This program is called by the ircd-ratbox ircd.\n"); | |
62 | fprintf(stderr, "It cannot be used on its own.\n"); | |
63 | exit(1); | |
64 | } | |
65 | ||
66 | int | |
67 | main(int argc, char *argv[]) | |
68 | { | |
69 | int max_fd = 0; | |
70 | int i, x; | |
71 | #ifdef SERVLINK_DEBUG | |
72 | int GDBAttached = 0; | |
73 | ||
74 | while (!GDBAttached) | |
75 | sleep(1); | |
76 | #endif | |
77 | ||
78 | /* Make sure we are running under ircd.. */ | |
79 | ||
80 | if(argc != 4 || strcmp(argv[0], "-slink")) | |
81 | usage(); /* exits */ | |
82 | ||
83 | ||
84 | for (i = 0; i < 3; i++) | |
85 | { | |
86 | fds[i].fd = atoi(argv[i + 1]); | |
87 | if(fds[i].fd < 0) | |
88 | exit(1); | |
89 | } | |
90 | ||
91 | for (i = 0; i < 3; i++) | |
92 | { | |
93 | /* XXX: Hack alert...we need to do dup2() here for some dumb | |
94 | * platforms (Solaris) that don't like select using fds > 255 | |
95 | */ | |
96 | ||
97 | if(fds[i].fd >= 255) | |
98 | { | |
99 | for(x = 0; x < 255; x++) | |
100 | { | |
101 | if(x != fds[0].fd && x != fds[1].fd && x != fds[2].fd) | |
102 | { | |
103 | if(dup2(fds[i].fd, x) < 0) | |
104 | exit(1); | |
105 | close(fds[i].fd); | |
106 | fds[i].fd = x; | |
107 | break; | |
108 | } | |
109 | } | |
110 | } | |
111 | fcntl(fds[i].fd, F_SETFL, O_NONBLOCK); | |
112 | if(fds[i].fd > max_fd) | |
113 | max_fd = fds[i].fd; | |
114 | } | |
115 | ||
116 | /* enter io loop */ | |
117 | io_loop(max_fd + 1); | |
118 | ||
119 | /* NOTREACHED */ | |
120 | return (0); | |
121 | } /* main() */ |