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
|
/*
* For license terms, see the file COPYING in this directory.
*/
/* constants designating the various supported protocols */
#define P_AUTO 0
#define P_POP2 2
#define P_POP3 3
#define P_IMAP 4
#define P_IMAP_K4 5
#define P_APOP 6
#define P_RPOP 7
#define P_ETRN 8
#define KPOP_PORT 1109
/* preauthentication types */
#define A_PASSWORD 0 /* password or inline authentication */
#define A_KERBEROS_V4 1 /* preauthenticate w/ Kerberos V4 */
/* definitions for buffer sizes -- somewhat arbitrary */
#define POPBUFSIZE 512 /* per RFC 937 */
#define MSGBUFSIZE 2048 /* size of message read buffer */
#define HOSTLEN 128 /* max hostname length */
#define USERNAMELEN 32 /* max user-name length */
#define PASSWORDLEN 64 /* max password length */
#define DIGESTLEN 33 /* length of MD5 digest */
#define IDLEN 128 /* length of UIDL message ID */
/* exit code values */
#define PS_SUCCESS 0 /* successful receipt of messages */
#define PS_NOMAIL 1 /* no mail available */
#define PS_SOCKET 2 /* socket I/O woes */
#define PS_AUTHFAIL 3 /* user authorization failed */
#define PS_PROTOCOL 4 /* protocol violation */
#define PS_SYNTAX 5 /* command-line syntax error */
#define PS_IOERR 6 /* bad permissions on rc file */
#define PS_ERROR 7 /* protocol error */
#define PS_EXCLUDE 8 /* client-side exclusion error */
#define PS_LOCKBUSY 9 /* server responded lock busy */
#define PS_SMTP 10 /* SMTP error */
#define PS_DNS 11 /* fatal DNS error */
#define PS_UNDEFINED 12 /* something I hadn't thought of */
#define PS_TRANSIENT 13 /* transient failure (internal use) */
#define PS_REFUSED 14 /* mail refused (internal use) */
#define PS_RETAINED 15 /* message retained (internal use) */
/* output noise level */
#define O_SILENT 0 /* mute, max squelch, etc. */
#define O_NORMAL 1 /* user-friendly */
#define O_VERBOSE 2 /* excessive */
#define SIZETICKER 1024 /* print 1 dot per this many bytes */
/* we need to use zero as a flag-uninitialized value */
#define FLAG_TRUE 2
#define FLAG_FALSE 1
struct idlist
{
char *id;
union
{
int num;
char *id2;
} val;
struct idlist *next;
};
/*
* We #ifdef this and use flag rather than bool
* to avoid a type clash with curses.h
*/
#ifndef TRUE
#define FALSE 0
#define TRUE 1
#endif /* TRUE */
typedef char flag;
struct hostdata /* shared among all user connections to given server */
{
/* rc file data */
char *pollname; /* poll label of host */
char *via; /* "true" server name if non-NULL */
struct idlist *akalist; /* server name first, then akas */
struct idlist *localdomains; /* list of pass-through domains */
int protocol; /* protocol type */
int port; /* TCP/IP service port number */
int interval; /* # cycles to skip between polls */
int preauthenticate; /* preauthentication mode to try */
int timeout; /* inactivity timout in seconds */
char *envelope; /* envelope address list header */
flag skip; /* suppress poll in implicit mode? */
flag dns; /* do DNS lookup on multidrop? */
flag uidl; /* use RFC1725 UIDLs? */
#ifdef linux
char *interface;
char *monitor;
int monitor_io;
struct interface_pair_s *interface_pair;
#endif /* linux */
/* computed for internal use */
int poll_count; /* count of polls so far */
char *queryname; /* name to attempt DNS lookup on */
char *truename; /* "true name" of server host */
struct hostdata *lead_server; /* ptr to lead query for this server */
int esmtp_options;
};
struct query
{
/* mailserver connection controls */
struct hostdata server;
/* per-user data */
struct idlist *localnames; /* including calling user's name */
int wildcard; /* should unmatched names be passed through */
char *remotename; /* remote login name to use */
char *password; /* remote password to use */
struct idlist *mailboxes; /* list of mailboxes to check */
struct idlist *smtphunt; /* list of SMTP hosts to try forwarding to */
char *smtphost; /* actual SMTP host to point to */
char *mda; /* local MDA to pass mail to */
char *preconnect; /* pre-connection command to execute */
char *postconnect; /* post-connection command to execute */
/* per-user control flags */
flag keep; /* if TRUE, leave messages undeleted */
flag fetchall; /* if TRUE, fetch all (not just unseen) */
flag flush; /* if TRUE, delete messages already seen */
flag rewrite; /* if TRUE, canonicalize recipient addresses */
flag stripcr; /* if TRUE, strip CRs in text */
flag forcecr; /* if TRUE, force CRs before LFs in text */
flag pass8bits; /* if TRUE, ignore Content-Transfer-Encoding */
flag dropstatus; /* if TRUE, drop Status lines in mail */
int limit; /* limit size of retrieved messages */
int fetchlimit; /* max # msgs to get in single poll */
int batchlimit; /* max # msgs to pass in single SMTP session */
int expunge; /* max # msgs to pass between expunges */
/* unseen, previous state of mailbox (initially from .fetchids) */
struct idlist *oldsaved, *newsaved;
/* internal use */
flag active; /* should we actually poll this server? */
int errcount; /* count transient errors in last pass */
int smtp_socket; /* socket descriptor for SMTP connection */
unsigned int uid; /* UID of user to deliver to */
char digest [DIGESTLEN]; /* md5 digest buffer */
struct query *next; /* next query control block in chain */
};
#define MULTIDROP(ctl) (ctl->wildcard || \
((ctl)->localnames && (ctl)->localnames->next))
struct method
{
char *name; /* protocol name */
int port; /* service port */
flag tagged; /* if true, generate & expect command tags */
flag delimited; /* if true, accept "." message delimiter */
int (*parse_response)(); /* response_parsing function */
int (*getauth)(); /* authorization fetcher */
int (*getrange)(); /* get message range to fetch */
int (*getsizes)(); /* get sizes of messages */
int (*is_old)(); /* check for old message */
int (*fetch_headers)(); /* fetch FROM headera given message */
int (*fetch_body)(); /* fetch a given message */
int (*trail)(); /* eat trailer of a message */
int (*delete)(); /* delete method */
int (*logout_cmd)(); /* logout command */
};
#define TAGLEN 6
extern char tag[TAGLEN];
/* list of hosts assembled from run control file and command line */
extern struct query cmd_opts, *querylist;
/* what's returned by envquery */
extern void envquery(int, char **);
/* controls the detail level of status/progress messages written to stderr */
extern int outlevel; /* see the O_.* constants above */
extern int yydebug; /* enable parse debugging */
/* daemon mode control */
extern int poll_interval; /* poll interval in seconds */
extern flag nodetach; /* if TRUE, don't detach daemon process */
extern char *logfile; /* log file for daemon mode */
extern flag use_syslog; /* if --syslog was set */
extern flag quitmode; /* if --quit was set */
extern flag check_only; /* if --check was set */
extern char *cmd_logfile; /* if --logfile was set */
extern int cmd_daemon; /* if --daemon was set */
/* these get computed */
extern int batchcount; /* count of messages sent in current batch */
extern flag peek_capable; /* can we read msgs without setting seen? */
/* miscellaneous global controls */
extern char *rcfile; /* path name of rc file */
extern char *idfile; /* path name of UID file */
extern int linelimit; /* limit # lines retrieved per site */
extern flag versioninfo; /* emit only version info */
extern char *user; /* name of invoking user */
extern char *home; /* home directory of invoking user */
extern char *fetchmailhost; /* the name of the host running fetchmail */
/* prototypes for globally callable functions */
/* error.c: Error reporting */
#if defined(HAVE_STDARG_H)
void error_init(int foreground);
void error (int status, int errnum, const char *format, ...);
void error_build (const char *format, ...);
void error_complete (int status, int errnum, const char *format, ...);
void error_at_line (int, int, const char *, unsigned int, const char *, ...);
#else
void error ();
void error_build ();
void error_complete ();
void error_at_line ();
#endif
/* driver.c: transaction support */
#if defined(HAVE_STDARG_H)
void gen_send (int sock, char *, ... );
int gen_recv(int sock, char *buf, int size);
int gen_transact (int sock, char *, ... );
#else
void gen_send ();
int gen_recv();
int gen_transact ();
#endif
/* rfc822.c: RFC822 header parsing */
char *reply_hack(char *, const char *);
char *nxtaddr(const char *);
/* uid.c: UID support */
void initialize_saved_lists(struct query *, const char *);
struct idlist *save_str(struct idlist **, int, const char *);
void free_str_list(struct idlist **);
void save_str_pair(struct idlist **, const char *, const char *);
void free_str_pair_list(struct idlist **);
int delete_str(struct idlist **, int);
int str_in_list(struct idlist **, const char *);
int str_nr_in_list(struct idlist **, const char *);
int count_list( struct idlist **idl );
char *str_from_nr_list( struct idlist **idl, int number );
char *str_find(struct idlist **, int);
char *idpair_find(struct idlist **, const char *);
void append_str_list(struct idlist **, struct idlist **);
void update_str_lists(struct query *);
void write_saved_lists(struct query *, const char *);
/* rcfile_y.y */
int prc_parse_file(const char *, const flag);
int prc_filecheck(const char *);
/* base64.c */
void to64frombits(unsigned char *, const unsigned char *, int);
int from64tobits(char *, const char *);
/* interface.c */
void interface_parse(char *, struct hostdata *);
void interface_note_activity(struct hostdata *);
int interface_approve(struct hostdata *);
/* xmalloc.c */
#if defined(HAVE_VOIDPOINTER)
#define XMALLOCTYPE void
#else
#define XMALLOCTYPE char
#endif
XMALLOCTYPE *xmalloc(int);
XMALLOCTYPE *xrealloc(XMALLOCTYPE *, int);
char *xstrdup(const char *);
/* protocol driver and methods */
int do_protocol(struct query *, const struct method *);
int doPOP2 (struct query *);
int doPOP3 (struct query *);
int doIMAP (struct query *);
int doETRN (struct query *);
/* miscellanea */
struct query *hostalloc(struct query *);
int parsecmdline (int, char **, struct query *);
void optmerge(struct query *, struct query *);
char *MD5Digest (unsigned char *);
int daemonize(const char *, void (*)(int));
char *getpassword(char *);
void escapes(const char *, char *);
char *visbuf(const char *);
char *showproto(int);
void yyerror(const char *);
int yylex(void);
#define STRING_DISABLED (char *)-1
/* fetchmail.h ends here */
|
