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
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
|
/*++
/* NAME
/* cleanup 3h
/* SUMMARY
/* canonicalize and enqueue message
/* SYNOPSIS
/* #include "cleanup.h"
/* DESCRIPTION
/* .nf
/*
* System library.
*/
#include <sys/time.h>
/*
* Utility library.
*/
#include <vstring.h>
#include <vstream.h>
#include <argv.h>
#include <nvtable.h>
/*
* Global library.
*/
#include <maps.h>
#include <tok822.h>
#include <been_here.h>
#include <mail_stream.h>
#include <mail_conf.h>
#include <mime_state.h>
#include <string_list.h>
#include <cleanup_user.h>
#include <header_body_checks.h>
#include <dsn_mask.h>
/*
* Milter library.
*/
#include <milter.h>
/*
* These state variables are accessed by many functions, and there is only
* one instance of each per message.
*/
typedef struct CLEANUP_STATE {
VSTRING *attr_buf; /* storage for named attribute */
VSTRING *temp1; /* scratch buffer, local use only */
VSTRING *temp2; /* scratch buffer, local use only */
VSTRING *stripped_buf; /* character stripped input */
VSTREAM *src; /* current input stream */
VSTREAM *dst; /* current output stream */
MAIL_STREAM *handle; /* mail stream handle */
char *queue_name; /* queue name */
char *queue_id; /* queue file basename */
struct timeval arrival_time; /* arrival time */
char *fullname; /* envelope sender full name */
char *sender; /* envelope sender address */
char *recip; /* envelope recipient address */
char *orig_rcpt; /* original recipient address */
char *return_receipt; /* return-receipt address */
char *errors_to; /* errors-to address */
ARGV *auto_hdrs; /* MTA's own header(s) */
ARGV *hbc_rcpt; /* header/body checks BCC addresses */
int flags; /* processing options, status flags */
int tflags; /* User- or MTA-requested tracing */
int qmgr_opts; /* qmgr processing options */
int errs; /* any badness experienced */
int err_mask; /* allowed badness */
int headers_seen; /* which headers were seen */
int hop_count; /* count of received: headers */
char *resent; /* any resent- header seen */
BH_TABLE *dups; /* recipient dup filter */
void (*action) (struct CLEANUP_STATE *, int, const char *, ssize_t);
off_t data_offset; /* start of message content */
off_t body_offset; /* start of body content */
off_t xtra_offset; /* start of extra segment */
off_t cont_length; /* length including Milter edits */
off_t sender_pt_offset; /* replace sender here */
off_t sender_pt_target; /* record after sender address */
off_t append_rcpt_pt_offset; /* append recipient here */
off_t append_rcpt_pt_target; /* target of above record */
off_t append_hdr_pt_offset; /* append header here */
off_t append_hdr_pt_target; /* target of above record */
off_t append_meta_pt_offset; /* append meta record here */
off_t append_meta_pt_target; /* target of above record */
ssize_t rcpt_count; /* recipient count */
char *reason; /* failure reason */
char *smtp_reply; /* failure reason, SMTP-style */
NVTABLE *attr; /* queue file attribute list */
MIME_STATE *mime_state; /* MIME state engine */
int mime_errs; /* MIME error flags */
char *hdr_rewrite_context; /* header rewrite context */
char *filter; /* from header/body patterns */
char *redirect; /* from header/body patterns */
char *dsn_envid; /* DSN envelope ID */
int dsn_ret; /* DSN full/hdrs */
int dsn_notify; /* DSN never/delay/fail/success */
char *dsn_orcpt; /* DSN original recipient */
char *verp_delims; /* VERP delimiters (optional) */
#ifdef DELAY_ACTION
int defer_delay; /* deferred delivery */
#endif
/*
* Miscellaneous Milter support.
*/
MILTERS *milters; /* mail filters */
const char *client_name; /* real or ersatz client */
const char *reverse_name; /* real or ersatz client */
const char *client_addr; /* real or ersatz client */
int client_af; /* real or ersatz client */
const char *client_port; /* real or ersatz client */
const char *server_addr; /* real or ersatz server */
const char *server_port; /* real or ersatz server */
VSTRING *milter_ext_from; /* externalized sender */
VSTRING *milter_ext_rcpt; /* externalized recipient */
VSTRING *milter_err_text; /* milter call-back reply */
VSTRING *milter_dsn_buf; /* Milter DSN parsing buffer */
/*
* Support for Milter body replacement requests.
*/
struct CLEANUP_REGION *free_regions;/* unused regions */
struct CLEANUP_REGION *body_regions;/* regions with body content */
struct CLEANUP_REGION *curr_body_region;
/*
* Internationalization.
*/
int smtputf8; /* what support is desired */
} CLEANUP_STATE;
/*
* Status flags. Flags 0-15 are reserved for cleanup_user.h.
*/
#define CLEANUP_FLAG_INRCPT (1<<16) /* Processing recipient records */
#define CLEANUP_FLAG_WARN_SEEN (1<<17) /* REC_TYPE_WARN record seen */
#define CLEANUP_FLAG_END_SEEN (1<<18) /* REC_TYPE_END record seen */
/*
* Mappings.
*/
extern MAPS *cleanup_comm_canon_maps;
extern MAPS *cleanup_send_canon_maps;
extern MAPS *cleanup_rcpt_canon_maps;
extern int cleanup_comm_canon_flags;
extern int cleanup_send_canon_flags;
extern int cleanup_rcpt_canon_flags;
extern MAPS *cleanup_header_checks;
extern MAPS *cleanup_mimehdr_checks;
extern MAPS *cleanup_nesthdr_checks;
extern MAPS *cleanup_body_checks;
extern MAPS *cleanup_virt_alias_maps;
extern ARGV *cleanup_masq_domains;
extern STRING_LIST *cleanup_masq_exceptions;
extern int cleanup_masq_flags;
extern MAPS *cleanup_send_bcc_maps;
extern MAPS *cleanup_rcpt_bcc_maps;
/*
* Character filters.
*/
extern VSTRING *cleanup_reject_chars;
extern VSTRING *cleanup_strip_chars;
/*
* Milters.
*/
extern MILTERS *cleanup_milters;
/*
* Address canonicalization fine control.
*/
#define CLEANUP_CANON_FLAG_ENV_FROM (1<<0) /* envelope sender */
#define CLEANUP_CANON_FLAG_ENV_RCPT (1<<1) /* envelope recipient */
#define CLEANUP_CANON_FLAG_HDR_FROM (1<<2) /* header sender */
#define CLEANUP_CANON_FLAG_HDR_RCPT (1<<3) /* header recipient */
/*
* Address masquerading fine control.
*/
#define CLEANUP_MASQ_FLAG_ENV_FROM (1<<0) /* envelope sender */
#define CLEANUP_MASQ_FLAG_ENV_RCPT (1<<1) /* envelope recipient */
#define CLEANUP_MASQ_FLAG_HDR_FROM (1<<2) /* header sender */
#define CLEANUP_MASQ_FLAG_HDR_RCPT (1<<3) /* header recipient */
/*
* Restrictions on extension propagation.
*/
extern int cleanup_ext_prop_mask;
/*
* Saved queue file names, so the files can be removed in case of a fatal
* run-time error.
*/
extern char *cleanup_path;
extern VSTRING *cleanup_trace_path;
extern VSTRING *cleanup_bounce_path;
/*
* cleanup_state.c
*/
extern CLEANUP_STATE *cleanup_state_alloc(VSTREAM *);
extern void cleanup_state_free(CLEANUP_STATE *);
/*
* cleanup_api.c
*/
extern CLEANUP_STATE *cleanup_open(VSTREAM *);
extern void cleanup_control(CLEANUP_STATE *, int);
extern int cleanup_flush(CLEANUP_STATE *);
extern void cleanup_free(CLEANUP_STATE *);
extern void cleanup_all(void);
extern void cleanup_sig(int);
extern void cleanup_pre_jail(char *, char **);
extern void cleanup_post_jail(char *, char **);
extern const CONFIG_INT_TABLE cleanup_int_table[];
extern const CONFIG_BOOL_TABLE cleanup_bool_table[];
extern const CONFIG_STR_TABLE cleanup_str_table[];
extern const CONFIG_TIME_TABLE cleanup_time_table[];
#define CLEANUP_RECORD(s, t, b, l) ((s)->action((s), (t), (b), (l)))
/*
* cleanup_out.c
*/
extern void cleanup_out(CLEANUP_STATE *, int, const char *, ssize_t);
extern void cleanup_out_string(CLEANUP_STATE *, int, const char *);
extern void PRINTFLIKE(3, 4) cleanup_out_format(CLEANUP_STATE *, int, const char *,...);
extern void cleanup_out_header(CLEANUP_STATE *, VSTRING *);
#define CLEANUP_OUT_BUF(s, t, b) \
cleanup_out((s), (t), vstring_str((b)), VSTRING_LEN((b)))
#define CLEANUP_OUT_OK(s) \
(!((s)->errs & (s)->err_mask) && !((s)->flags & CLEANUP_FLAG_DISCARD))
/*
* cleanup_envelope.c
*/
extern void cleanup_envelope(CLEANUP_STATE *, int, const char *, ssize_t);
/*
* cleanup_message.c
*/
extern void cleanup_message(CLEANUP_STATE *, int, const char *, ssize_t);
/*
* cleanup_extracted.c
*/
extern void cleanup_extracted(CLEANUP_STATE *, int, const char *, ssize_t);
/*
* cleanup_final.c
*/
extern void cleanup_final(CLEANUP_STATE *);
/*
* cleanup_rewrite.c
*/
extern int cleanup_rewrite_external(const char *, VSTRING *, const char *);
extern int cleanup_rewrite_internal(const char *, VSTRING *, const char *);
extern int cleanup_rewrite_tree(const char *, TOK822 *);
/*
* cleanup_map11.c
*/
extern int cleanup_map11_external(CLEANUP_STATE *, VSTRING *, MAPS *, int);
extern int cleanup_map11_internal(CLEANUP_STATE *, VSTRING *, MAPS *, int);
extern int cleanup_map11_tree(CLEANUP_STATE *, TOK822 *, MAPS *, int);
/*
* cleanup_map1n.c
*/
ARGV *cleanup_map1n_internal(CLEANUP_STATE *, const char *, MAPS *, int);
/*
* cleanup_masquerade.c
*/
extern int cleanup_masquerade_external(CLEANUP_STATE *, VSTRING *, ARGV *);
extern int cleanup_masquerade_internal(CLEANUP_STATE *, VSTRING *, ARGV *);
extern int cleanup_masquerade_tree(CLEANUP_STATE *, TOK822 *, ARGV *);
/*
* cleanup_recipient.c
*/
extern void cleanup_out_recipient(CLEANUP_STATE *, const char *, int, const char *, const char *);
/*
* cleanup_addr.c.
*/
extern off_t cleanup_addr_sender(CLEANUP_STATE *, const char *);
extern void cleanup_addr_recipient(CLEANUP_STATE *, const char *);
extern void cleanup_addr_bcc_dsn(CLEANUP_STATE *, const char *, const char *, int);
#define NO_DSN_ORCPT ((char *) 0)
#define NO_DSN_NOTIFY DSN_NOTIFY_NEVER
#define DEF_DSN_NOTIFY (0)
#define cleanup_addr_bcc(state, addr) \
cleanup_addr_bcc_dsn((state), (addr), NO_DSN_ORCPT, NO_DSN_NOTIFY)
/*
* cleanup_bounce.c.
*/
extern int cleanup_bounce(CLEANUP_STATE *);
/*
* MSG_STATS compatibility.
*/
#define CLEANUP_MSG_STATS(stats, state) \
MSG_STATS_INIT1(stats, incoming_arrival, state->arrival_time)
/*
* cleanup_milter.c.
*/
extern void cleanup_milter_header_checks_init(void);
extern void cleanup_milter_receive(CLEANUP_STATE *, int);
extern void cleanup_milter_inspect(CLEANUP_STATE *, MILTERS *);
extern void cleanup_milter_emul_mail(CLEANUP_STATE *, MILTERS *, const char *);
extern void cleanup_milter_emul_rcpt(CLEANUP_STATE *, MILTERS *, const char *);
extern void cleanup_milter_emul_data(CLEANUP_STATE *, MILTERS *);
#define CLEANUP_MILTER_OK(s) \
(((s)->flags & CLEANUP_FLAG_MILTER) != 0 \
&& (s)->errs == 0 && ((s)->flags & CLEANUP_FLAG_DISCARD) == 0)
/*
* cleanup_body_edit.c
*/
typedef struct CLEANUP_REGION {
off_t start; /* start of region */
off_t len; /* length or zero (open-ended) */
off_t write_offs; /* write offset */
struct CLEANUP_REGION *next; /* linkage */
} CLEANUP_REGION;
extern void cleanup_region_init(CLEANUP_STATE *);
extern CLEANUP_REGION *cleanup_region_open(CLEANUP_STATE *, ssize_t);
extern void cleanup_region_close(CLEANUP_STATE *, CLEANUP_REGION *);
extern CLEANUP_REGION *cleanup_region_return(CLEANUP_STATE *, CLEANUP_REGION *);
extern void cleanup_region_done(CLEANUP_STATE *);
extern int cleanup_body_edit_start(CLEANUP_STATE *);
extern int cleanup_body_edit_write(CLEANUP_STATE *, int, VSTRING *);
extern int cleanup_body_edit_finish(CLEANUP_STATE *);
extern void cleanup_body_edit_free(CLEANUP_STATE *);
/*
* From: header formatting.
*/
extern int cleanup_hfrom_format;
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*
/* Wietse Venema
/* Google, Inc.
/* 111 8th Avenue
/* New York, NY 10011, USA
/*--*/
|
