Mercurial > dovecot > core-2.2

annotate src/anvil/connect-limit.c @ 9235:2e2b957f1cca HEAD

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implemented anvil service, which is used to implement mail_max_userip_connections.
author Timo Sirainen <tss@iki.fi>
date Tue, 05 May 2009 21:28:34 -0400
parents
children 1110edddec36
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
9235
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
1 /* Copyright (C) 2009 Dovecot authors, see the included COPYING file */
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
2
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
3 #include "common.h"
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
4 #include "hash.h"
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
5 #include "connect-limit.h"
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
6
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
7 struct ident_pid {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
8 /* ident string points to ident_hash keys */
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
9 const char *ident;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
10 pid_t pid;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
11 unsigned int refcount;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
12 };
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
13
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
14 struct connect_limit {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
15 /* ident => refcount */
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
16 struct hash_table *ident_hash;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
17 /* struct ident_pid => struct ident_pid */
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
18 struct hash_table *ident_pid_hash;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
19 };
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
20
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
21 static unsigned int ident_pid_hash(const void *p)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
22 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
23 const struct ident_pid *i = p;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
24
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
25 return str_hash(i->ident) ^ i->pid;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
26 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
27
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
28 static int ident_pid_cmp(const void *p1, const void *p2)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
29 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
30 const struct ident_pid *i1 = p1, *i2 = p2;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
31
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
32 if (i1->pid < i2->pid)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
33 return -1;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
34 else if (i1->pid > i2->pid)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
35 return 1;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
36 else
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
37 return strcmp(i1->ident, i2->ident);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
38 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
39
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
40 struct connect_limit *connect_limit_init(void)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
41 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
42 struct connect_limit *limit;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
43
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
44 limit = i_new(struct connect_limit, 1);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
45 limit->ident_hash =
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
46 hash_table_create(default_pool, default_pool, 0,
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
47 str_hash, (hash_cmp_callback_t *)strcmp);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
48 limit->ident_pid_hash =
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
49 hash_table_create(default_pool, default_pool, 0,
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
50 ident_pid_hash, ident_pid_cmp);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
51 return limit;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
52 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
53
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
54 void connect_limit_deinit(struct connect_limit **_limit)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
55 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
56 struct connect_limit *limit = *_limit;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
57
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
58 *_limit = NULL;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
59 hash_table_destroy(&limit->ident_hash);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
60 hash_table_destroy(&limit->ident_pid_hash);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
61 i_free(limit);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
62 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
63
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
64 unsigned int connect_limit_lookup(struct connect_limit *limit,
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
65 const char *ident)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
66 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
67 void *value;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
68
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
69 value = hash_table_lookup(limit->ident_hash, ident);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
70 if (value == NULL)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
71 return 0;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
72
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
73 return POINTER_CAST_TO(value, unsigned int);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
74 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
75
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
76 void connect_limit_connect(struct connect_limit *limit, pid_t pid,
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
77 const char *ident)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
78 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
79 struct ident_pid *i, lookup_i;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
80 void *key, *value;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
81
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
82 if (!hash_table_lookup_full(limit->ident_hash, ident, &key, &value)) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
83 key = i_strdup(ident);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
84 value = POINTER_CAST(1);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
85 hash_table_insert(limit->ident_hash, key, value);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
86 } else {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
87 value = POINTER_CAST(POINTER_CAST_TO(value, unsigned int) + 1);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
88 hash_table_update(limit->ident_hash, key, value);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
89 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
90
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
91 lookup_i.ident = ident;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
92 lookup_i.pid = pid;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
93 i = hash_table_lookup(limit->ident_pid_hash, &lookup_i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
94 if (i == NULL) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
95 i = i_new(struct ident_pid, 1);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
96 i->ident = key;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
97 i->pid = pid;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
98 i->refcount = 1;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
99 hash_table_insert(limit->ident_pid_hash, i, i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
100 } else {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
101 i->refcount++;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
102 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
103 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
104
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
105 static void
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
106 connect_limit_ident_hash_unref(struct connect_limit *limit, const char *ident)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
107 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
108 void *key, *value;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
109 unsigned int new_refcount;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
110
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
111 if (!hash_table_lookup_full(limit->ident_hash, ident, &key, &value))
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
112 i_panic("connect limit hash tables are inconsistent");
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
113
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
114 new_refcount = POINTER_CAST_TO(value, unsigned int) - 1;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
115 if (new_refcount > 0) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
116 value = POINTER_CAST(new_refcount);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
117 hash_table_update(limit->ident_hash, key, value);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
118 } else {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
119 hash_table_remove(limit->ident_hash, key);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
120 i_free(key);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
121 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
122 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
123
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
124 void connect_limit_disconnect(struct connect_limit *limit, pid_t pid,
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
125 const char *ident)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
126 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
127 struct ident_pid *i, lookup_i;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
128
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
129 lookup_i.ident = ident;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
130 lookup_i.pid = pid;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
131
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
132 i = hash_table_lookup(limit->ident_pid_hash, &lookup_i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
133 if (i == NULL) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
134 i_error("connect limit: disconnection for unknown "
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
135 "pid %s + ident %s", dec2str(pid), ident);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
136 return;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
137 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
138
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
139 if (--i->refcount == 0) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
140 hash_table_remove(limit->ident_pid_hash, i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
141 i_free(i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
142 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
143
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
144 connect_limit_ident_hash_unref(limit, ident);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
145 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
146
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
147 void connect_limit_disconnect_pid(struct connect_limit *limit, pid_t pid)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
148 {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
149 struct hash_iterate_context *iter;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
150 struct ident_pid *i;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
151 void *key, *value;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
152
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
153 /* this should happen rarely (or never), so this slow implementation
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
154 should be fine. */
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
155 iter = hash_table_iterate_init(limit->ident_pid_hash);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
156 while (hash_table_iterate(iter, &key, &value)) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
157 i = key;
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
158 if (i->pid == pid) {
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
159 hash_table_remove(limit->ident_pid_hash, i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
160 for (; i->refcount > 0; i->refcount--)
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
161 connect_limit_ident_hash_unref(limit, i->ident);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
162 i_free(i);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
163 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
164 }
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
165 hash_table_iterate_deinit(&iter);
2e2b957f1cca Implemented anvil service, which is used to implement mail_max_userip_connections.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
166 }