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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
|
/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
*/
#include "lib.h"
#include "str-sanitize.h"
#include "sieve-common.h"
#include "sieve-commands.h"
#include "sieve-stringlist.h"
#include "sieve-code.h"
#include "sieve-comparators.h"
#include "sieve-match-types.h"
#include "sieve-message.h"
#include "sieve-address.h"
#include "sieve-address-parts.h"
#include "sieve-validator.h"
#include "sieve-generator.h"
#include "sieve-interpreter.h"
#include "sieve-dump.h"
#include "sieve-match.h"
#include <stdio.h>
/*
* Address test
*
* Syntax:
* address [ADDRESS-PART] [COMPARATOR] [MATCH-TYPE]
* <header-list: string-list> <key-list: string-list>
*/
static bool tst_address_registered
(struct sieve_validator *valdtr, const struct sieve_extension *ext,
struct sieve_command_registration *cmd_reg);
static bool tst_address_validate
(struct sieve_validator *valdtr, struct sieve_command *tst);
static bool tst_address_generate
(const struct sieve_codegen_env *cgenv, struct sieve_command *ctx);
const struct sieve_command_def tst_address = {
.identifier = "address",
.type = SCT_TEST,
.positional_args = 2,
.subtests = 0,
.block_allowed = FALSE,
.block_required = FALSE,
.registered = tst_address_registered,
.validate = tst_address_validate,
.generate = tst_address_generate
};
/*
* Address operation
*/
static bool tst_address_operation_dump
(const struct sieve_dumptime_env *denv, sieve_size_t *address);
static int tst_address_operation_execute
(const struct sieve_runtime_env *renv, sieve_size_t *address);
const struct sieve_operation_def tst_address_operation = {
.mnemonic = "ADDRESS",
.code = SIEVE_OPERATION_ADDRESS,
.dump = tst_address_operation_dump,
.execute = tst_address_operation_execute
};
/*
* Test registration
*/
static bool tst_address_registered
(struct sieve_validator *valdtr, const struct sieve_extension *ext ATTR_UNUSED,
struct sieve_command_registration *cmd_reg)
{
/* The order of these is not significant */
sieve_comparators_link_tag
(valdtr, cmd_reg, SIEVE_MATCH_OPT_COMPARATOR );
sieve_match_types_link_tags
(valdtr, cmd_reg, SIEVE_MATCH_OPT_MATCH_TYPE);
sieve_address_parts_link_tags
(valdtr, cmd_reg, SIEVE_AM_OPT_ADDRESS_PART);
return TRUE;
}
/*
* Validation
*/
/* List of valid headers:
* Implementations MUST restrict the address test to headers that
* contain addresses, but MUST include at least From, To, Cc, Bcc,
* Sender, Resent-From, and Resent-To, and it SHOULD include any other
* header that utilizes an "address-list" structured header body.
*
* This list explicitly does not contain the envelope-to and return-path
* headers. The envelope test must be used to test against these addresses.
*
* FIXME: this restriction is somewhat odd. Sieve list advises to allow
* any other header as long as its content matches the address-list
* grammar.
*/
static const char * const _allowed_headers[] = {
/* Required */
"from", "to", "cc", "bcc", "sender", "resent-from", "resent-to",
/* Additional (RFC 822 / RFC 2822) */
"reply-to", "resent-reply-to", "resent-sender", "resent-cc", "resent-bcc",
/* Non-standard (RFC 2076, draft-palme-mailext-headers-08.txt) */
"for-approval", "for-handling", "for-comment", "apparently-to", "errors-to",
"delivered-to", "return-receipt-to", "x-admin", "read-receipt-to",
"x-confirm-reading-to", "return-receipt-requested",
"registered-mail-reply-requested-by", "mail-followup-to", "mail-reply-to",
"abuse-reports-to", "x-complaints-to", "x-report-abuse-to",
/* Undocumented */
"x-beenthere", "x-original-to",
NULL
};
static int _header_is_allowed
(void *context ATTR_UNUSED, struct sieve_ast_argument *arg)
{
if ( sieve_argument_is_string_literal(arg) ) {
const char *header = sieve_ast_strlist_strc(arg);
const char * const *hdsp = _allowed_headers;
while ( *hdsp != NULL ) {
if ( strcasecmp( *hdsp, header ) == 0 )
return 1;
hdsp++;
}
return 0;
}
return 1;
}
static bool tst_address_validate
(struct sieve_validator *valdtr, struct sieve_command *tst)
{
struct sieve_ast_argument *arg = tst->first_positional;
struct sieve_ast_argument *header;
struct sieve_comparator cmp_default =
SIEVE_COMPARATOR_DEFAULT(i_ascii_casemap_comparator);
struct sieve_match_type mcht_default =
SIEVE_MATCH_TYPE_DEFAULT(is_match_type);
if ( !sieve_validate_positional_argument
(valdtr, tst, arg, "header list", 1, SAAT_STRING_LIST) ) {
return FALSE;
}
if ( !sieve_validator_argument_activate(valdtr, tst, arg, FALSE) )
return FALSE;
if ( !sieve_command_verify_headers_argument(valdtr, arg) )
return FALSE;
/* Check if supplied header names are allowed
* FIXME: verify dynamic header names at runtime
*/
header = arg;
if ( sieve_ast_stringlist_map
(&header, NULL, _header_is_allowed) <= 0 ) {
i_assert(header != NULL);
sieve_argument_validate_error(valdtr, header,
"specified header '%s' is not allowed for the address test",
str_sanitize(sieve_ast_strlist_strc(header), 64));
return FALSE;
}
/* Check key list */
arg = sieve_ast_argument_next(arg);
if ( !sieve_validate_positional_argument
(valdtr, tst, arg, "key list", 2, SAAT_STRING_LIST) ) {
return FALSE;
}
if ( !sieve_validator_argument_activate(valdtr, tst, arg, FALSE) )
return FALSE;
/* Validate the key argument to a specified match type */
return sieve_match_type_validate
(valdtr, tst, arg, &mcht_default, &cmp_default);
}
/*
* Code generation
*/
static bool tst_address_generate
(const struct sieve_codegen_env *cgenv, struct sieve_command *tst)
{
sieve_operation_emit(cgenv->sblock, NULL, &tst_address_operation);
/* Generate arguments */
return sieve_generate_arguments(cgenv, tst, NULL);
}
/*
* Code dump
*/
static bool tst_address_operation_dump
(const struct sieve_dumptime_env *denv, sieve_size_t *address)
{
sieve_code_dumpf(denv, "ADDRESS");
sieve_code_descend(denv);
/* Handle any optional arguments */
if ( sieve_message_opr_optional_dump(denv, address, NULL) != 0 )
return FALSE;
return
sieve_opr_stringlist_dump(denv, address, "header list") &&
sieve_opr_stringlist_dump(denv, address, "key list");
}
/*
* Code execution
*/
static int tst_address_operation_execute
(const struct sieve_runtime_env *renv, sieve_size_t *address)
{
struct sieve_comparator cmp =
SIEVE_COMPARATOR_DEFAULT(i_ascii_casemap_comparator);
struct sieve_match_type mcht =
SIEVE_MATCH_TYPE_DEFAULT(is_match_type);
struct sieve_address_part addrp =
SIEVE_ADDRESS_PART_DEFAULT(all_address_part);
struct sieve_stringlist *hdr_list, *hdr_value_list, *value_list, *key_list;
struct sieve_address_list *addr_list;
ARRAY_TYPE(sieve_message_override) svmos;
int match, ret;
/* Read optional operands */
i_zero(&svmos);
if ( sieve_message_opr_optional_read
(renv, address, NULL, &ret, &addrp, &mcht, &cmp, &svmos) < 0 )
return ret;
/* Read header-list */
if ( (ret=sieve_opr_stringlist_read(renv, address, "header-list", &hdr_list))
<= 0 )
return ret;
/* Read key-list */
if ( (ret=sieve_opr_stringlist_read(renv, address, "key-list", &key_list))
<= 0 )
return ret;
sieve_runtime_trace(renv, SIEVE_TRLVL_TESTS, "address test");
/* Get header */
sieve_runtime_trace_descend(renv);
if ( (ret=sieve_message_get_header_fields
(renv, hdr_list, &svmos, FALSE, &hdr_value_list)) <= 0 )
return ret;
sieve_runtime_trace_ascend(renv);
/* Create value stringlist */
addr_list = sieve_header_address_list_create(renv, hdr_value_list);
value_list = sieve_address_part_stringlist_create(renv, &addrp, addr_list);
/* Perform match */
if ( (match=sieve_match(renv, &mcht, &cmp, value_list, key_list, &ret)) < 0 )
return ret;
/* Set test result for subsequent conditional jump */
sieve_interpreter_set_test_result(renv->interp, match > 0);
return SIEVE_EXEC_OK;
}
|