1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* $OpenBSD: lka_proc.c,v 1.6 2018/12/21 19:07:47 gilles Exp $ */
/*
* Copyright (c) 2018 Gilles Chehade <gilles@poolp.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <event.h>
#include <imsg.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "smtpd.h"
#include "log.h"
static int inited = 0;
static struct dict processors;
struct processor_instance {
char *name;
struct io *io;
int ready;
};
static void processor_io(struct io *, int, void *);
int lka_filter_process_response(const char *, const char *);
int
lka_proc_ready(void)
{
void *iter;
struct processor_instance *pi;
iter = NULL;
while (dict_iter(&processors, &iter, NULL, (void **)&pi))
if (!pi->ready)
return 0;
return 1;
}
void
lka_proc_forked(const char *name, int fd)
{
struct processor_instance *processor;
if (!inited) {
dict_init(&processors);
inited = 1;
}
processor = xcalloc(1, sizeof *processor);
processor->name = xstrdup(name);
processor->io = io_new();
io_set_nonblocking(fd);
io_set_fd(processor->io, fd);
io_set_callback(processor->io, processor_io, processor->name);
dict_xset(&processors, name, processor);
}
struct io *
lka_proc_get_io(const char *name)
{
struct processor_instance *processor;
processor = dict_xget(&processors, name);
return processor->io;
}
static void
processor_register(const char *name, const char *line)
{
struct processor_instance *processor;
processor = dict_xget(&processors, name);
if (strcasecmp(line, "register|ready") == 0) {
processor->ready = 1;
return;
}
if (strncasecmp(line, "register|report|", 16) == 0) {
lka_report_register_hook(name, line+16);
return;
}
if (strncasecmp(line, "register|filter|", 16) == 0) {
lka_filter_register_hook(name, line+16);
return;
}
}
static void
processor_io(struct io *io, int evt, void *arg)
{
const char *name = arg;
char *line = NULL;
ssize_t len;
switch (evt) {
case IO_DATAIN:
nextline:
line = io_getline(io, &len);
/* No complete line received */
if (line == NULL)
return;
if (strncasecmp("register|", line, 9) == 0)
processor_register(name, line);
else if (! lka_filter_process_response(name, line))
fatalx("misbehaving filter");
goto nextline;
}
}
|
