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1b4cfad8 AC |
1 | /* |
2 | * charybdis: A slightly useful ircd. | |
3 | * ports.c: Solaris ports compatible network routines. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2001 Adrian Chadd <adrian@creative.net.au> | |
8 | * Copyright (C) 2002-2004 ircd-ratbox development team | |
9 | * Copyright (C) 2005 Edward Brocklesby. | |
10 | * Copyright (C) 2005 William Pitcock and Jilles Tjoelker | |
11 | * Copyright (C) 2007 River Tarnell | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
26 | * USA | |
27 | * | |
28 | * $Id: ports.c 3366 2007-04-03 09:57:53Z nenolod $ | |
29 | */ | |
30 | ||
31 | #include "stdinc.h" | |
32 | #include <port.h> | |
33 | #include <time.h> | |
34 | ||
35 | #include "stdinc.h" | |
36 | #include "res.h" | |
37 | #include "numeric.h" | |
38 | #include "tools.h" | |
39 | #include "memory.h" | |
40 | #include "balloc.h" | |
41 | #include "linebuf.h" | |
42 | #include "sprintf_irc.h" | |
43 | #include "commio.h" | |
44 | #include "ircevent.h" | |
45 | #include "modules.h" | |
46 | ||
47 | static int comm_init(void); | |
48 | static void comm_deinit(void); | |
49 | ||
50 | static int comm_select_impl(unsigned long delay); | |
51 | static void comm_setselect_impl(int fd, unsigned int type, PF * handler, void *client_data, time_t timeout); | |
52 | ||
53 | static void pe_update_events(fde_t *, short, PF *); | |
54 | static int pe; | |
55 | static struct timespec zero_timespec; | |
56 | ||
57 | static port_event_t *pelst; /* port buffer */ | |
58 | static int pemax; /* max structs to buffer */ | |
59 | ||
60 | static void | |
61 | pe_update_events(fde_t * F, short filter, PF * handler) | |
62 | { | |
63 | PF *cur_handler = NULL; | |
64 | ||
65 | if (filter == POLLRDNORM) | |
66 | cur_handler = F->read_handler; | |
67 | else if (filter == POLLWRNORM) | |
68 | cur_handler = F->write_handler; | |
69 | ||
70 | if (!cur_handler && handler) | |
71 | port_associate(pe, PORT_SOURCE_FD, F->fd, filter, F); | |
72 | else if (cur_handler && !handler) | |
73 | port_dissociate(pe, PORT_SOURCE_FD, F->fd); | |
74 | } | |
75 | ||
76 | /* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */ | |
77 | /* Public functions */ | |
78 | ||
79 | ||
80 | /* | |
81 | * init_netio | |
82 | * | |
83 | * This is a needed exported function which will be called to initialise | |
84 | * the network loop code. | |
85 | */ | |
86 | static int | |
87 | init_netio(void) | |
88 | { | |
89 | if((pe = port_create()) < 0) { | |
90 | ilog(L_MAIN, "init_netio: Couldn't open port fd!\n"); | |
91 | exit(115); /* Whee! */ | |
92 | } | |
93 | pemax = getdtablesize(); | |
94 | pelst = MyMalloc(sizeof(port_event_t) * pemax); | |
95 | zero_timespec.tv_sec = 0; | |
96 | zero_timespec.tv_nsec = 0; | |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
101 | /* | |
102 | * ircd_setselect | |
103 | * | |
104 | * This is a needed exported function which will be called to register | |
105 | * and deregister interest in a pending IO state for a given FD. | |
106 | */ | |
107 | void | |
108 | comm_setselect(int fd, unsigned int type, PF * handler, | |
109 | void *client_data, time_t timeout) | |
110 | { | |
111 | fde_t *F = &fd_table[fd]; | |
112 | s_assert(fd >= 0); | |
113 | s_assert(F->flags.open); | |
114 | ||
115 | if (type & COMM_SELECT_READ) { | |
116 | pe_update_events(F, POLLRDNORM, handler); | |
117 | F->read_handler = handler; | |
118 | F->read_data = client_data; | |
119 | } | |
120 | if (type & COMM_SELECT_WRITE) { | |
121 | pe_update_events(F, POLLWRNORM, handler); | |
122 | F->write_handler = handler; | |
123 | F->write_data = client_data; | |
124 | } | |
125 | } | |
126 | ||
127 | /* | |
128 | * ircd_select | |
129 | * | |
130 | * Called to do the new-style IO, courtesy of squid (like most of this | |
131 | * new IO code). This routine handles the stuff we've hidden in | |
132 | * ircd_setselect and fd_table[] and calls callbacks for IO ready | |
133 | * events. | |
134 | */ | |
135 | ||
136 | int | |
137 | comm_select(unsigned long delay) | |
138 | { | |
139 | int i, fd; | |
140 | unsigned int nget = 1; | |
141 | struct timespec poll_time; | |
142 | ||
143 | poll_time.tv_sec = delay / 1000; | |
144 | poll_time.tv_nsec = (delay % 1000) * 1000000; | |
145 | ||
146 | i = port_getn(pe, pelst, pemax, &nget, &poll_time); | |
147 | set_time(); | |
148 | ||
149 | if (i == -1) | |
150 | return COMM_ERROR; | |
151 | ||
152 | for (i = 0; i < nget; i++) | |
153 | { | |
154 | PF *hdl = NULL; | |
155 | fde_t *F; | |
156 | ||
157 | switch(pelst[i].portev_source) | |
158 | { | |
159 | case PORT_SOURCE_FD: | |
160 | fd = pelst[i].portev_object; | |
161 | F = &fd_table[fd]; | |
162 | ||
163 | if ((pelst[i].portev_events & POLLRDNORM) && (hdl = F->read_handler)) { | |
164 | F->read_handler = NULL; | |
165 | hdl(fd, F->read_data); | |
166 | } | |
167 | if (F->flags.open == 0) | |
168 | continue; | |
169 | ||
170 | if ((pelst[i].portev_events & POLLWRNORM) && (hdl = F->write_handler)) { | |
171 | F->write_handler = NULL; | |
172 | hdl(fd, F->write_data); | |
173 | } | |
174 | break; | |
175 | default: | |
176 | break; | |
177 | } | |
178 | } | |
179 | return COMM_OK; | |
180 | } |