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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/* Copyright (c) 2008-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "str.h"
#include "str-sanitize.h"
#include "istream.h"
#include "imap-parser.h"
#include "imap-quote.h"
#include "imap-id.h"
#include "dovecot-version.h"
#ifdef HAVE_SYS_UTSNAME_H
# include <sys/utsname.h>
#endif
#ifdef HAVE_UNAME
static struct utsname utsname_result;
static bool utsname_set = FALSE;
static const char *imap_id_get_uname(const char *key)
{
if (!utsname_set) {
utsname_set = TRUE;
if (uname(&utsname_result) < 0) {
i_error("uname() failed: %m");
i_zero(&utsname_result);
}
}
if (strcasecmp(key, "os") == 0)
return utsname_result.sysname;
if (strcasecmp(key, "os-version") == 0)
return utsname_result.release;
return NULL;
}
#endif
static const char *imap_id_get_default(const char *key)
{
if (strcasecmp(key, "name") == 0)
return PACKAGE_NAME;
if (strcasecmp(key, "version") == 0)
return PACKAGE_VERSION;
if (strcasecmp(key, "revision") == 0)
return DOVECOT_REVISION;
if (strcasecmp(key, "support-url") == 0)
return PACKAGE_WEBPAGE;
if (strcasecmp(key, "support-email") == 0)
return PACKAGE_BUGREPORT;
#ifdef HAVE_UNAME
return imap_id_get_uname(key);
#endif
}
static const char *
imap_id_reply_generate_from_imap_args(const struct imap_arg *args)
{
string_t *str;
const char *key, *value;
if (IMAP_ARG_IS_EOL(args))
return "NIL";
str = t_str_new(256);
str_append_c(str, '(');
for (; !IMAP_ARG_IS_EOL(args); args++) {
if (!imap_arg_get_astring(args, &key)) {
/* broken input */
if (IMAP_ARG_IS_EOL(&args[1]))
break;
args++;
} else {
/* key */
if (str_len(str) > 1)
str_append_c(str, ' ');
imap_append_quoted(str, key);
str_append_c(str, ' ');
/* value */
if (IMAP_ARG_IS_EOL(&args[1])) {
str_append(str, "NIL");
break;
}
args++;
if (!imap_arg_get_astring(args, &value))
value = NULL;
else {
if (strcmp(value, "*") == 0)
value = imap_id_get_default(key);
}
imap_append_nstring(str, value);
}
}
if (str_len(str) == 1) {
/* broken */
return "NIL";
}
str_append_c(str, ')');
return str_c(str);
}
const char *imap_id_reply_generate(const char *settings)
{
struct istream *input;
struct imap_parser *parser;
const struct imap_arg *args;
const char *ret;
if (settings == NULL)
return "NIL";
input = i_stream_create_from_data(settings, strlen(settings));
(void)i_stream_read(input);
parser = imap_parser_create(input, NULL, SIZE_MAX);
if (imap_parser_finish_line(parser, 0, 0, &args) <= 0)
ret = "NIL";
else
ret = imap_id_reply_generate_from_imap_args(args);
imap_parser_unref(&parser);
i_stream_destroy(&input);
return ret;
}
void imap_id_log_reply_append(string_t *reply, const char *key,
const char *value)
{
if (str_len(reply) > 0)
str_append(reply, ", ");
str_append(reply, str_sanitize(key, IMAP_ID_KEY_MAX_LEN));
str_append_c(reply, '=');
str_append(reply, value == NULL ? "NIL" : str_sanitize(value, 80));
}
const char *imap_id_args_get_log_reply(const struct imap_arg *args,
const char *settings)
{
const char *const *keys, *key, *value;
string_t *reply;
bool log_all;
if (settings == NULL || *settings == '\0')
return NULL;
if (!imap_arg_get_list(args, &args))
return NULL;
log_all = strcmp(settings, "*") == 0;
reply = t_str_new(256);
keys = t_strsplit_spaces(settings, " ");
while (!IMAP_ARG_IS_EOL(&args[0]) &&
!IMAP_ARG_IS_EOL(&args[1])) {
if (!imap_arg_get_string(args, &key)) {
/* broken input */
args += 2;
continue;
}
args++;
if (strlen(key) > 30) {
/* broken: ID spec requires fields to be max. 30
octets */
args++;
continue;
}
if (log_all || str_array_icase_find(keys, key)) {
if (!imap_arg_get_nstring(args, &value))
value = "";
imap_id_log_reply_append(reply, key, value);
}
args++;
}
return str_len(reply) == 0 ? NULL : str_c(reply);
}
|
