Initial Alpine Version

1 files changed, 1838 insertions, 0 deletions

diff --git a/imap/src/c-client/mail.h b/imap/src/c-client/mail.h
new file mode 100644
index 00000000..174993e1
--- /dev/null
+++ b/imap/src/c-client/mail.h
@@ -0,0 +1,1838 @@
+/* ========================================================================
+ * Copyright 1988-2008 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:	Mailbox Access routines
+ *
+ * Author:	Mark Crispin
+ *		UW Technology
+ *		University of Washington
+ *		Seattle, WA  98195
+ *		Internet: MRC@Washington.EDU
+ *
+ * Date:	22 November 1989
+ * Last Edited:	16 December 2008
+ */
+
+/* The Version */
+
+#define CCLIENTVERSION "2007e"
+
+/* Build parameters */
+
+#define CACHEINCREMENT 250	/* cache growth increments */
+#define MAILTMPLEN 1024		/* size of a temporary buffer */
+#define SENDBUFLEN 16385	/* size of temporary sending buffer, also
+				 * used for SMTP commands and NETMBX generation
+				 * buffer so shouldn't be made smaller than
+				 * MAILTMPLEN.  Note that there's a guard byte,
+				 * so this is actually len+1. */
+#define MAXAUTHENTICATORS 8	/* maximum number of SASL authenticators */
+				/* maximum number of messages */
+#define MAXMESSAGES (unsigned long) 1000000
+#define MAXLOGINTRIALS 3	/* maximum number of client login attempts */
+#define MAXWILDCARDS 10		/* maximum wildcards allowed in LIST/LSUB */
+
+
+/* These can't be changed without changing code */
+
+#define NUSERFLAGS 30		/* maximum number of user flags */
+#define MAXUSERFLAG 50		/* maximum length of a user flag */
+#define BASEYEAR 1970		/* the year time began on Unix DON'T CHANGE */
+				/* default for unqualified addresses */
+#define BADHOST ".MISSING-HOST-NAME."
+				/* default for syntax errors in addresses */
+#define ERRHOST ".SYNTAX-ERROR."
+
+
+/* Coddle certain compilers' 6-character symbol limitation */
+
+#ifdef __COMPILER_KCC__
+#include "shortsym.h"
+#endif
+
+
+/* Function status code */
+
+#define NIL 0			/* convenient name */
+#define T 1			/* opposite of NIL */
+#define LONGT (long) 1		/* long T to pacify some compilers */
+#define VOIDT (void *) ""	/* void T ditto */
+
+/* Global and Driver Parameters */
+
+	/* 0xx: driver and authenticator flags */
+#define ENABLE_DRIVER (long) 1
+#define DISABLE_DRIVER (long) 2
+#define ENABLE_AUTHENTICATOR (long) 3
+#define DISABLE_AUTHENTICATOR (long) 4
+#define ENABLE_DEBUG (long) 5
+#define DISABLE_DEBUG (long) 6
+#define HIDE_AUTHENTICATOR (long) 7
+#define UNHIDE_AUTHENTICATOR (long) 8
+	/* 1xx: c-client globals */
+#define GET_DRIVERS (long) 101
+#define SET_DRIVERS (long) 102
+#define GET_GETS (long) 103
+#define SET_GETS (long) 104
+#define GET_CACHE (long) 105
+#define SET_CACHE (long) 106
+#define GET_SMTPVERBOSE (long) 107
+#define SET_SMTPVERBOSE (long) 108
+#define GET_RFC822OUTPUT (long) 109
+#define SET_RFC822OUTPUT (long) 110
+#define GET_READPROGRESS (long) 111
+#define SET_READPROGRESS (long) 112
+#define GET_THREADERS (long) 113
+#define SET_THREADERS (long) 114
+#define GET_NAMESPACE (long) 115
+#define SET_NAMESPACE (long) 116
+#define GET_MAILPROXYCOPY (long) 117
+#define SET_MAILPROXYCOPY (long) 118
+#define GET_SERVICENAME (long) 119
+#define SET_SERVICENAME (long) 120
+#define GET_DRIVER (long) 121
+#define SET_DRIVER (long) 122
+#define GET_EXPUNGEATPING (long) 123
+#define SET_EXPUNGEATPING (long) 124
+#define GET_PARSEPHRASE (long) 125
+#define SET_PARSEPHRASE (long) 126
+#define GET_SSLDRIVER (long) 127
+#define SET_SSLDRIVER (long) 128
+#define GET_TRYSSLFIRST (long) 129
+#define SET_TRYSSLFIRST (long) 130
+#define GET_BLOCKNOTIFY (long) 131
+#define SET_BLOCKNOTIFY (long) 132
+#define GET_SORTRESULTS (long) 133
+#define SET_SORTRESULTS (long) 134
+#define GET_THREADRESULTS (long) 135
+#define SET_THREADRESULTS (long) 136
+#define GET_PARSELINE (long) 137
+#define SET_PARSELINE (long) 138
+#define GET_NEWSRCQUERY (long) 139
+#define SET_NEWSRCQUERY (long) 140
+#define GET_FREEENVELOPESPAREP (long) 141
+#define SET_FREEENVELOPESPAREP (long) 142
+#define GET_FREEELTSPAREP (long) 143
+#define SET_FREEELTSPAREP (long) 144
+#define GET_SSLSTART (long) 145
+#define SET_SSLSTART (long) 146
+#define GET_DEBUGSENSITIVE (long) 147
+#define SET_DEBUGSENSITIVE (long) 148
+#define GET_TCPDEBUG (long) 149
+#define SET_TCPDEBUG (long) 150
+#define GET_FREESTREAMSPAREP (long) 151
+#define SET_FREESTREAMSPAREP (long) 152
+#define GET_FREEBODYSPAREP (long) 153
+#define SET_FREEBODYSPAREP (long) 154
+#define GET_COPYUID (long) 155
+#define SET_COPYUID (long) 156
+#define GET_APPENDUID (long) 157
+#define SET_APPENDUID (long) 158
+#define GET_RFC822OUTPUTFULL (long) 159
+#define SET_RFC822OUTPUTFULL (long) 160
+#define GET_BLOCKENVINIT (long) 161
+#define SET_BLOCKENVINIT (long) 162
+
+	/* 2xx: environment */
+#define GET_USERNAME (long) 201
+#define SET_USERNAME (long) 202
+#define GET_HOMEDIR (long) 203
+#define SET_HOMEDIR (long) 204
+#define GET_LOCALHOST (long) 205
+#define SET_LOCALHOST (long) 206
+#define GET_SYSINBOX (long) 207
+#define SET_SYSINBOX (long) 208
+#define GET_USERPROMPT (long) 209
+#define SET_USERPROMPT (long) 210
+#define GET_DISABLEPLAINTEXT (long) 211
+#define SET_DISABLEPLAINTEXT (long) 212
+#define GET_CHROOTSERVER (long) 213
+#define SET_CHROOTSERVER (long) 214
+#define GET_ADVERTISETHEWORLD (long) 215
+#define SET_ADVERTISETHEWORLD (long) 216
+#define GET_DISABLEAUTOSHAREDNS (long) 217
+#define SET_DISABLEAUTOSHAREDNS (long) 218
+#define GET_MAILSUBDIR 219
+#define SET_MAILSUBDIR 220
+#define GET_DISABLE822TZTEXT 221
+#define SET_DISABLE822TZTEXT 222
+#define GET_LIMITEDADVERTISE (long) 223
+#define SET_LIMITEDADVERTISE (long) 224
+#define GET_LOGOUTHOOK (long) 225
+#define SET_LOGOUTHOOK (long) 226
+#define GET_LOGOUTDATA (long) 227
+#define SET_LOGOUTDATA (long) 228
+#define GET_EXTERNALAUTHID (long) 229
+#define SET_EXTERNALAUTHID (long) 230
+#define GET_SSLCAPATH (long) 231
+#define SET_SSLCAPATH (long) 232
+
+	/* 3xx: TCP/IP */
+#define GET_OPENTIMEOUT (long) 300
+#define SET_OPENTIMEOUT (long) 301
+#define GET_READTIMEOUT (long) 302
+#define SET_READTIMEOUT (long) 303
+#define GET_WRITETIMEOUT (long) 304
+#define SET_WRITETIMEOUT (long) 305
+#define GET_CLOSETIMEOUT (long) 306
+#define SET_CLOSETIMEOUT (long) 307
+#define GET_TIMEOUT (long) 308
+#define SET_TIMEOUT (long) 309
+#define GET_RSHTIMEOUT (long) 310
+#define SET_RSHTIMEOUT (long) 311
+#define GET_ALLOWREVERSEDNS (long) 312
+#define SET_ALLOWREVERSEDNS (long) 313
+#define GET_RSHCOMMAND (long) 314
+#define SET_RSHCOMMAND (long) 315
+#define GET_RSHPATH (long) 316
+#define SET_RSHPATH (long) 317
+#define GET_SSHTIMEOUT (long) 318
+#define SET_SSHTIMEOUT (long) 319
+#define GET_SSHCOMMAND (long) 320
+#define SET_SSHCOMMAND (long) 321
+#define GET_SSHPATH (long) 322
+#define SET_SSHPATH (long) 323
+#define GET_SSLCERTIFICATEQUERY (long) 324
+#define SET_SSLCERTIFICATEQUERY (long) 325
+#define GET_SSLFAILURE (long) 326
+#define SET_SSLFAILURE (long) 327
+#define GET_NEWSRCCANONHOST (long) 328
+#define SET_NEWSRCCANONHOST (long) 329
+#define GET_KINIT (long) 330
+#define SET_KINIT (long) 331
+#define GET_SSLCLIENTCERT (long) 332
+#define SET_SSLCLIENTCERT (long) 333
+#define GET_SSLCLIENTKEY (long) 334
+#define SET_SSLCLIENTKEY (long) 335
+#define GET_KERBEROS_CP_SVR_NAME (long) 336
+#define SET_KERBEROS_CP_SVR_NAME (long) 337
+
+	/* 4xx: network drivers */
+#define GET_MAXLOGINTRIALS (long) 400
+#define SET_MAXLOGINTRIALS (long) 401
+#define GET_LOOKAHEAD (long) 402
+#define SET_LOOKAHEAD (long) 403
+#define GET_IMAPPORT (long) 404
+#define SET_IMAPPORT (long) 405
+#define GET_PREFETCH (long) 406
+#define SET_PREFETCH (long) 407
+#define GET_CLOSEONERROR (long) 408
+#define SET_CLOSEONERROR (long) 409
+#define GET_POP3PORT (long) 410
+#define SET_POP3PORT (long) 411
+#define GET_UIDLOOKAHEAD (long) 412
+#define SET_UIDLOOKAHEAD (long) 413
+#define GET_NNTPPORT (long) 414
+#define SET_NNTPPORT (long) 415
+#define GET_IMAPENVELOPE (long) 416
+#define SET_IMAPENVELOPE (long) 417
+#define GET_IMAPREFERRAL (long) 418
+#define SET_IMAPREFERRAL (long) 419
+#define GET_SSLIMAPPORT (long) 420
+#define SET_SSLIMAPPORT (long) 421
+#define GET_SSLPOPPORT (long) 422
+#define SET_SSLPOPPORT (long) 423
+#define GET_SSLNNTPPORT (long) 424
+#define SET_SSLNNTPPORT (long) 425
+#define GET_SSLSMTPPORT (long) 426
+#define SET_SSLSMTPPORT (long) 427
+#define GET_SMTPPORT (long) 428
+#define SET_SMTPPORT (long) 429
+#define GET_IMAPEXTRAHEADERS (long) 430
+#define SET_IMAPEXTRAHEADERS (long) 431
+#define GET_ACL (long) 432
+#define SET_ACL (long) 433
+#define GET_LISTRIGHTS (long) 434
+#define SET_LISTRIGHTS (long) 435
+#define GET_MYRIGHTS (long) 436
+#define SET_MYRIGHTS (long) 437
+#define GET_QUOTA (long) 438
+#define SET_QUOTA (long) 439
+#define GET_QUOTAROOT (long) 440
+#define SET_QUOTAROOT (long) 441
+#define GET_IMAPTRYSSL (long) 442
+#define SET_IMAPTRYSSL (long) 443
+#define GET_FETCHLOOKAHEAD (long) 444
+#define SET_FETCHLOOKAHEAD (long) 445
+#define GET_NNTPRANGE (long) 446
+#define SET_NNTPRANGE (long) 447
+#define GET_NNTPHIDEPATH (long) 448
+#define SET_NNTPHIDEPATH (long) 449
+#define GET_SENDCOMMAND (long) 450
+#define SET_SENDCOMMAND (long) 451
+#define GET_IDLETIMEOUT (long) 452
+#define SET_IDLETIMEOUT (long) 453
+#define GET_FETCHLOOKAHEADLIMIT (long) 454
+#define SET_FETCHLOOKAHEADLIMIT (long) 455
+
+	/* 5xx: local file drivers */
+#define GET_MBXPROTECTION (long) 500
+#define SET_MBXPROTECTION (long) 501
+#define GET_DIRPROTECTION (long) 502
+#define SET_DIRPROTECTION (long) 503
+#define GET_LOCKPROTECTION (long) 504
+#define SET_LOCKPROTECTION (long) 505
+#define GET_FROMWIDGET (long) 506
+#define SET_FROMWIDGET (long) 507
+#define GET_NEWSACTIVE (long) 508
+#define SET_NEWSACTIVE (long) 509
+#define GET_NEWSSPOOL (long) 510
+#define SET_NEWSSPOOL (long) 511
+#define GET_NEWSRC (long) 512
+#define SET_NEWSRC (long) 513
+#define GET_EXTENSION (long) 514
+#define SET_EXTENSION (long) 515
+#define GET_DISABLEFCNTLLOCK (long) 516
+#define SET_DISABLEFCNTLLOCK (long) 517
+#define GET_LOCKEACCESERROR (long) 518
+#define SET_LOCKEACCESERROR (long) 519
+#define GET_LISTMAXLEVEL (long) 520
+#define SET_LISTMAXLEVEL (long) 521
+#define GET_ANONYMOUSHOME (long) 522
+#define SET_ANONYMOUSHOME (long) 523
+#define GET_FTPHOME (long) 524
+#define SET_FTPHOME (long) 525
+#define GET_PUBLICHOME (long) 526
+#define SET_PUBLICHOME (long) 527
+#define GET_SHAREDHOME (long) 528
+#define SET_SHAREDHOME (long) 529
+#define GET_MHPROFILE (long) 530
+#define SET_MHPROFILE (long) 531
+#define GET_MHPATH (long) 532
+#define SET_MHPATH (long) 533
+#define GET_ONETIMEEXPUNGEATPING (long) 534
+#define SET_ONETIMEEXPUNGEATPING (long) 535
+#define GET_USERHASNOLIFE (long) 536
+#define SET_USERHASNOLIFE (long) 537
+#define GET_FTPPROTECTION (long) 538
+#define SET_FTPPROTECTION (long) 539
+#define GET_PUBLICPROTECTION (long) 540
+#define SET_PUBLICPROTECTION (long) 541
+#define GET_SHAREDPROTECTION (long) 542
+#define SET_SHAREDPROTECTION (long) 543
+#define GET_LOCKTIMEOUT (long) 544
+#define SET_LOCKTIMEOUT (long) 545
+#define GET_NOTIMEZONES (long) 546
+#define SET_NOTIMEZONES (long) 547
+#define GET_HIDEDOTFILES (long) 548
+#define SET_HIDEDOTFILES (long) 549
+#define GET_FTPDIRPROTECTION (long) 550
+#define SET_FTPDIRPROTECTION (long) 551
+#define GET_PUBLICDIRPROTECTION (long) 552
+#define SET_PUBLICDIRPROTECTION (long) 553
+#define GET_SHAREDDIRPROTECTION (long) 554
+#define SET_SHAREDDIRPROTECTION (long) 555
+#define GET_TRUSTDNS (long) 556
+#define SET_TRUSTDNS (long) 557
+#define GET_SASLUSESPTRNAME (long) 558
+#define SET_SASLUSESPTRNAME (long) 559
+#define GET_NETFSSTATBUG (long) 560
+#define SET_NETFSSTATBUG (long) 561
+#define GET_SNARFMAILBOXNAME (long) 562
+#define SET_SNARFMAILBOXNAME (long) 563
+#define GET_SNARFINTERVAL (long) 564
+#define SET_SNARFINTERVAL (long) 565
+#define GET_SNARFPRESERVE (long) 566
+#define SET_SNARFPRESERVE (long) 567
+#define GET_INBOXPATH (long) 568
+#define SET_INBOXPATH (long) 569
+#define GET_DIRFMTTEST (long) 570
+#define SET_DIRFMTTEST (long) 571
+#define GET_SCANCONTENTS (long) 572
+#define SET_SCANCONTENTS (long) 573
+#define GET_MHALLOWINBOX (long) 574
+#define SET_MHALLOWINBOX (long) 575
+
+/* Driver flags */
+
+#define DR_DISABLE (long) 0x1	/* driver is disabled */
+#define DR_LOCAL (long) 0x2	/* local file driver */
+#define DR_MAIL (long) 0x4	/* supports mail */
+#define DR_NEWS (long) 0x8	/* supports news */
+#define DR_READONLY (long) 0x10	/* driver only allows readonly access */
+#define DR_NOFAST (long) 0x20	/* "fast" data is slow (whole msg fetch) */
+#define DR_NAMESPACE (long) 0x40/* driver has a special namespace */
+#define DR_LOWMEM (long) 0x80	/* low amounts of memory available */
+#define DR_LOCKING (long) 0x100	/* driver does locking */
+#define DR_CRLF (long) 0x200	/* driver internal form uses CRLF newlines */
+#define DR_NOSTICKY (long) 0x400/* driver does not support sticky UIDs */
+#define DR_RECYCLE (long) 0x800	/* driver does stream recycling */
+#define DR_XPOINT (long) 0x1000	/* needs to be checkpointed */
+				/* driver has no real internal date */
+#define DR_NOINTDATE (long) 0x2000
+				/* driver does not announce new mail */
+#define DR_NONEWMAIL (long) 0x4000
+				/* driver does not announce new mail when RO */
+#define DR_NONEWMAILRONLY (long) 0x8000
+				/* driver can be halfopen */
+#define DR_HALFOPEN (long) 0x10000
+#define DR_DIRFMT (long) 0x20000/* driver is a directory-format */
+#define DR_MODSEQ (long) 0x40000/* driver supports modseqs */
+
+
+/* Cache management function codes */
+
+#define CH_INIT (long) 10	/* initialize cache */
+#define CH_SIZE (long) 11	/* (re-)size the cache */
+#define CH_MAKEELT (long) 30	/* return elt, make if needed */
+#define CH_ELT (long) 31	/* return elt if exists */
+#define CH_SORTCACHE (long) 35	/* return sortcache entry, make if needed */
+#define CH_FREE (long) 40	/* free space used by elt */
+				/* free space used by sortcache */
+#define CH_FREESORTCACHE (long) 43
+#define CH_EXPUNGE (long) 45	/* delete elt pointer from list */
+
+
+/* Mailbox open options
+ * For compatibility with the past, OP_DEBUG must always be 1.
+ */
+
+#define OP_DEBUG (long) 0x1	/* debug protocol negotiations */
+#define OP_READONLY (long) 0x2	/* read-only open */
+#define OP_ANONYMOUS (long) 0x4	/* anonymous open of newsgroup */
+#define OP_SHORTCACHE (long) 0x8/* short (elt-only) caching */
+#define OP_SILENT (long) 0x10	/* don't pass up events (internal use) */
+#define OP_PROTOTYPE (long) 0x20/* return driver prototype */
+#define OP_HALFOPEN (long) 0x40	/* half-open (IMAP connect but no select) */
+#define OP_EXPUNGE (long) 0x80	/* silently expunge recycle stream */
+#define OP_SECURE (long) 0x100	/* don't do non-secure authentication */
+#define OP_TRYSSL (long) 0x200	/* try SSL first */
+				/* use multiple newsrc files */
+#define OP_MULNEWSRC (long) 0x400
+#define OP_NOKOD (long) 0x800	/* suppress kiss-of-death */
+#define OP_SNIFF (long) 0x1000	/* metadata only open */
+				/* reserved for application use */
+#define OP_RESERVED (unsigned long) 0xff000000
+
+
+/* Net open options */
+
+				/* no error messages */
+#define NET_SILENT ((unsigned long) 0x80000000)
+				/* no validation of SSL certificates */
+#define NET_NOVALIDATECERT ((unsigned long) 0x40000000)
+				/* no open timeout */
+#define NET_NOOPENTIMEOUT ((unsigned long) 0x20000000)
+				/* TLS not SSL */
+#define NET_TLSCLIENT ((unsigned long) 0x10000000)
+				/* try SSL mode */
+#define NET_TRYSSL ((unsigned long) 0x8000000)
+
+/* Close options */
+
+#define CL_EXPUNGE (long) 1	/* expunge silently */
+
+
+/* Fetch options */
+
+#define FT_UID (long) 0x1	/* argument is a UID */
+#define FT_PEEK (long) 0x2	/* peek at data */
+#define FT_NOT (long) 0x4	/* NOT flag for header lines fetch */
+#define FT_INTERNAL (long) 0x8	/* text can be internal strings */
+				/* IMAP prefetch text when fetching header */
+#define FT_PREFETCHTEXT (long) 0x20
+#define FT_NOHDRS (long) 0x40	/* suppress fetching extra headers (note that
+				   this breaks news handling) */
+#define FT_NEEDENV (long) 0x80	/* (internal use) include envelope */
+#define FT_NEEDBODY (long) 0x100/* (internal use) include body structure */
+				/* no fetch lookahead */
+#define FT_NOLOOKAHEAD (long) 0x200
+				/* (internal use) lookahead in hdr searching */
+#define FT_SEARCHLOOKAHEAD (long) 0x400
+				/* stringstruct return hack */
+#define FT_RETURNSTRINGSTRUCT (long) 0x800
+
+
+/* Flagging options */
+
+#define ST_UID (long) 0x1	/* argument is a UID sequence */
+#define ST_SILENT (long) 0x2	/* don't return results */
+#define ST_SET (long) 0x4	/* set vs. clear */
+
+
+/* Expunge options */
+
+#define EX_UID (long) 0x1	/* argument is a UID sequence */
+
+
+/* Copy options */
+
+#define CP_UID (long) 0x1	/* argument is a UID sequence */
+#define CP_MOVE (long) 0x2	/* delete from source after copying */
+				/* set debug in any created stream */
+#define CP_DEBUG (long) 0x20000000
+
+/* Search/sort/thread options */
+
+#define SE_UID (long) 0x1	/* return UID */
+#define SE_FREE (long) 0x2	/* free search program after finished */
+#define SE_NOPREFETCH (long) 0x4/* no search prefetching */
+#define SO_FREE (long) 0x8	/* free sort program after finished */
+#define SE_NOSERVER (long) 0x10	/* don't do server-based search/sort/thread */
+#define SE_RETAIN (long) 0x20	/* retain previous search results */
+#define SO_OVERVIEW (long) 0x40	/* use overviews in searching (NNTP only) */
+#define SE_NEEDBODY (long) 0x80	/* include body structure in prefetch */
+#define SE_NOHDRS (long) 0x100	/* suppress prefetching extra headers (note
+				   that this breaks news handling) */
+#define SE_NOLOCAL (long) 0x200	/* no local retry (IMAP only) */
+
+#define SO_NOSERVER SE_NOSERVER	/* compatibility name */
+#define SE_SILLYOK (long) 0x400	/* allow silly searches */
+
+
+/* Status options */
+
+#define SA_MESSAGES (long) 0x1	/* number of messages */
+#define SA_RECENT (long) 0x2	/* number of recent messages */
+#define SA_UNSEEN (long) 0x4	/* number of unseen messages */
+#define SA_UIDNEXT (long) 0x8	/* next UID to be assigned */
+				/* UID validity value */
+#define SA_UIDVALIDITY (long) 0x10
+				/* set OP_DEBUG on any created stream */
+#define SA_DEBUG (long) 0x10000000
+				/* use multiple newsrcs */
+#define SA_MULNEWSRC (long) 0x20000000
+
+/* Mailgets flags */
+
+#define MG_UID (long) 0x1	/* message number is a UID */
+#define MG_COPY (long) 0x2	/* must return copy of argument */
+
+/* SASL authenticator categories */
+
+#define AU_SECURE (long) 0x1	/* /secure allowed */
+#define AU_AUTHUSER (long) 0x2	/* /authuser=xxx allowed */
+				/* authenticator hidden */
+#define AU_HIDE (long) 0x10000000
+				/* authenticator disabled */
+#define AU_DISABLE (long) 0x20000000
+
+
+/* Garbage collection flags */
+
+#define GC_ELT (long) 0x1	/* message cache elements */
+#define GC_ENV (long) 0x2	/* envelopes and bodies */
+#define GC_TEXTS (long) 0x4	/* cached texts */
+
+
+/* mm_log()/mm_notify() condition codes */
+
+#define WARN (long) 1		/* mm_log warning type */
+#define ERROR (long) 2		/* mm_log error type */
+#define PARSE (long) 3		/* mm_log parse error type */
+#define BYE (long) 4		/* mm_notify stream dying */
+#define TCPDEBUG (long) 5	/* mm_log TCP debug babble */
+
+
+/* Bits from mail_parse_flags().  Don't change these, since the header format
+ * used by tenex, mtx, and mbx corresponds to these bits.
+ */
+
+#define fSEEN 0x1
+#define fDELETED 0x2
+#define fFLAGGED 0x4
+#define fANSWERED 0x8
+#define fOLD 0x10
+#define fDRAFT 0x20
+
+#define fEXPUNGED 0x8000	/* internal flag */
+
+/* Bits for mm_list() and mm_lsub() */
+
+/* Note that (LATT_NOINFERIORS LATT_HASCHILDREN LATT_HASNOCHILDREN) and
+ * (LATT_NOSELECT LATT_MARKED LATT_UNMARKED) each have eight possible states,
+ * but only four of these are valid.  The other four are silly states which
+ * while invalid can unfortunately be expressed in the IMAP protocol.
+ */
+
+				/* terminal node in hierarchy */
+#define LATT_NOINFERIORS (long) 0x1
+				/* name can not be selected */
+#define LATT_NOSELECT (long) 0x2
+				/* changed since last accessed */
+#define LATT_MARKED (long) 0x4
+				/* accessed since last changed */
+#define LATT_UNMARKED (long) 0x8
+				/* name has referral to remote mailbox */
+#define LATT_REFERRAL (long) 0x10
+				/* has selectable inferiors */
+#define LATT_HASCHILDREN (long) 0x20
+				/* has no selectable inferiors */
+#define LATT_HASNOCHILDREN (long) 0x40
+
+
+/* Sort functions */
+
+#define SORTDATE 0		/* date */
+#define SORTARRIVAL 1		/* arrival date */
+#define SORTFROM 2		/* from */
+#define SORTSUBJECT 3		/* subject */
+#define SORTTO 4		/* to */
+#define SORTCC 5		/* cc */
+#define SORTSIZE 6		/* size */
+
+
+/* imapreferral_t codes */
+
+#define REFAUTHFAILED (long) 0	/* authentication referral -- not logged in */
+#define REFAUTH (long) 1	/* authentication referral -- logged in */
+#define REFSELECT (long) 2	/* select referral */
+#define REFCREATE (long) 3
+#define REFDELETE (long) 4
+#define REFRENAME (long) 5
+#define REFSUBSCRIBE (long) 6
+#define REFUNSUBSCRIBE (long) 7
+#define REFSTATUS (long) 8
+#define REFCOPY (long) 9
+#define REFAPPEND (long) 10
+
+
+/* sendcommand_t codes */
+
+				/* expunge response deferred */
+#define SC_EXPUNGEDEFERRED (long) 1
+
+/* Block notification codes */
+
+#define BLOCK_NONE 0		/* not blocked */
+#define BLOCK_SENSITIVE 1	/* sensitive code, disallow alarms */
+#define BLOCK_NONSENSITIVE 2	/* non-sensitive code, allow alarms */
+#define BLOCK_DNSLOOKUP 10	/* blocked on DNS lookup */
+#define BLOCK_TCPOPEN 11	/* blocked on TCP open */
+#define BLOCK_TCPREAD 12	/* blocked on TCP read */
+#define BLOCK_TCPWRITE 13	/* blocked on TCP write */
+#define BLOCK_TCPCLOSE 14	/* blocked on TCP close */
+#define BLOCK_FILELOCK 20	/* blocked on file locking */
+
+
+/* In-memory sized-text */
+
+#define SIZEDTEXT struct mail_sizedtext
+
+SIZEDTEXT {
+  unsigned char *data;		/* text */
+  unsigned long size;		/* size of text in octets */
+};
+
+
+/* String list */
+
+#define STRINGLIST struct string_list
+
+STRINGLIST {
+  SIZEDTEXT text;		/* string text */
+  STRINGLIST *next;
+};
+
+
+/* Parse results from mail_valid_net_parse */
+
+#define NETMAXHOST 256
+#define NETMAXUSER 65
+#define NETMAXMBX (MAILTMPLEN/4)
+#define NETMAXSRV 21
+typedef struct net_mailbox {
+  char host[NETMAXHOST];	/* host name (may be canonicalized) */
+  char orighost[NETMAXHOST];	/* host name before canonicalization */
+  char user[NETMAXUSER];	/* user name */
+  char authuser[NETMAXUSER];	/* authentication user name */
+  char mailbox[NETMAXMBX];	/* mailbox name */
+  char service[NETMAXSRV];	/* service name */
+  unsigned long port;		/* TCP port number */
+  unsigned int anoflag : 1;	/* anonymous */
+  unsigned int dbgflag : 1;	/* debug flag */
+  unsigned int secflag : 1;	/* secure flag */
+  unsigned int sslflag : 1;	/* SSL driver flag */
+  unsigned int trysslflag : 1;	/* try SSL driver first flag */
+  unsigned int novalidate : 1;	/* don't validate certificates */
+  unsigned int tlsflag : 1;	/* TLS flag */
+  unsigned int notlsflag : 1;	/* do not do TLS flag */
+  unsigned int readonlyflag : 1;/* want readonly */
+  unsigned int norsh : 1;	/* don't use rsh/ssh */
+  unsigned int loser : 1;	/* server is a loser */
+  unsigned int tlssslv23 : 1;	/* force SSLv23 client method over TLS */
+} NETMBX;
+
+/* Item in an address list */
+
+#define ADDRESS struct mail_address
+
+ADDRESS {
+  char *personal;		/* personal name phrase */
+  char *adl;			/* at-domain-list source route */
+  char *mailbox;		/* mailbox name */
+  char *host;			/* domain name of mailbox's host */
+  char *error;			/* error in address from SMTP module */
+  struct {
+    char *type;			/* address type (default "rfc822") */
+    char *addr;			/* address as xtext */
+  } orcpt;
+  ADDRESS *next;		/* pointer to next address in list */
+};
+
+
+/* Message envelope */
+
+typedef struct mail_envelope {
+  unsigned int ngpathexists : 1;	/* newsgroups may be bogus */
+  unsigned int incomplete : 1;	/* envelope may be incomplete */
+  unsigned int imapenvonly : 1;	/* envelope only has IMAP envelope */
+  char *remail;			/* remail header if any */
+  ADDRESS *return_path;		/* error return address */
+  unsigned char *date;		/* message composition date string */
+  ADDRESS *from;		/* originator address list */
+  ADDRESS *sender;		/* sender address list */
+  ADDRESS *reply_to;		/* reply address list */
+  char *subject;		/* message subject string */
+  ADDRESS *to;			/* primary recipient list */
+  ADDRESS *cc;			/* secondary recipient list */
+  ADDRESS *bcc;			/* blind secondary recipient list */
+  char *in_reply_to;		/* replied message ID */
+  char *message_id;		/* message ID */
+  char *newsgroups;		/* USENET newsgroups */
+  char *followup_to;		/* USENET reply newsgroups */
+  char *references;		/* USENET references */
+  void *sparep;			/* spare pointer reserved for main program */
+} ENVELOPE;
+
+/* Primary body types */
+/* If you change any of these you must also change body_types in rfc822.c */
+
+#define TYPETEXT 0		/* unformatted text */
+#define TYPEMULTIPART 1		/* multiple part */
+#define TYPEMESSAGE 2		/* encapsulated message */
+#define TYPEAPPLICATION 3	/* application data */
+#define TYPEAUDIO 4		/* audio */
+#define TYPEIMAGE 5		/* static image */
+#define TYPEVIDEO 6		/* video */
+#define TYPEMODEL 7		/* model */
+#define TYPEOTHER 8		/* unknown */
+#define TYPEMAX 15		/* maximum type code */
+
+
+/* Body encodings */
+/* If you change any of these you must also change body_encodings in rfc822.c
+ */
+
+#define ENC7BIT 0		/* 7 bit SMTP semantic data */
+#define ENC8BIT 1		/* 8 bit SMTP semantic data */
+#define ENCBINARY 2		/* 8 bit binary data */
+#define ENCBASE64 3		/* base-64 encoded data */
+#define ENCQUOTEDPRINTABLE 4	/* human-readable 8-as-7 bit data */
+#define ENCOTHER 5		/* unknown */
+#define ENCMAX 10		/* maximum encoding code */
+
+
+/* Body contents */
+
+#define BODY struct mail_bodystruct
+#define MESSAGE struct mail_body_message
+#define PARAMETER struct mail_body_parameter
+#define PART struct mail_body_part
+#define PARTTEXT struct mail_body_text
+
+/* Message body text */
+
+PARTTEXT {
+  unsigned long offset;		/* offset from body origin */
+  SIZEDTEXT text;		/* text */
+};
+
+
+/* Message body structure */
+
+BODY {
+  unsigned short type;		/* body primary type */
+  unsigned short encoding;	/* body transfer encoding */
+  char *subtype;		/* subtype string */
+  PARAMETER *parameter;		/* parameter list */
+  char *id;			/* body identifier */
+  char *description;		/* body description */
+  struct {			/* body disposition */
+    char *type;			/* disposition type */
+    PARAMETER *parameter;	/* disposition parameters */
+  } disposition;
+  STRINGLIST *language;		/* body language */
+  char *location;		/* body content URI */
+  PARTTEXT mime;		/* MIME header */
+  PARTTEXT contents;		/* body part contents */
+  union {			/* different ways of accessing contents */
+    PART *part;			/* body part list */
+    MESSAGE *msg;		/* body encapsulated message */
+  } nested;
+  struct {
+    unsigned long lines;	/* size of text in lines */
+    unsigned long bytes;	/* size of text in octets */
+  } size;
+  char *md5;			/* MD5 checksum */
+  void *sparep;			/* spare pointer reserved for main program */
+};
+
+
+/* Parameter list */
+
+PARAMETER {
+  char *attribute;		/* parameter attribute name */
+  char *value;			/* parameter value */
+  PARAMETER *next;		/* next parameter in list */
+};
+
+
+/* Multipart content list */
+
+PART {
+  BODY body;			/* body information for this part */
+  PART *next;			/* next body part */
+};
+
+
+/* RFC-822 Message */
+
+MESSAGE {
+  ENVELOPE *env;		/* message envelope */
+  BODY *body;			/* message body */
+  PARTTEXT full;		/* full message */
+  STRINGLIST *lines;		/* lines used to filter header */
+  PARTTEXT header;		/* header text */
+  PARTTEXT text;		/* body text */
+};
+
+/* Entry in the message cache array */
+
+typedef struct message_cache {
+  unsigned long msgno;		/* message number */
+  unsigned int lockcount : 8;	/* non-zero if multiple references */
+  unsigned long rfc822_size;	/* # of bytes of message as raw RFC822 */
+  struct {			/* c-client internal use only */
+    unsigned long uid;		/* message unique ID */
+    unsigned long mod;		/* modseq */
+    PARTTEXT special;		/* special text pointers */
+    MESSAGE msg;		/* internal message pointers */
+    union {			/* driver internal use */
+      unsigned long data;
+      void *ptr;
+    } spare;
+    unsigned int sequence : 1;	/* saved sequence bit */
+    unsigned int dirty : 1;	/* driver internal use */
+    unsigned int filter : 1;	/* driver internal use */
+    unsigned int ghost : 1;	/* driver internal use */
+  } private;
+			/* internal date */
+  unsigned int day : 5;		/* day of month (1-31) */
+  unsigned int month : 4;	/* month of year (1-12) */
+  unsigned int year : 7;	/* year since BASEYEAR (expires in 127 yrs) */
+  unsigned int hours: 5;	/* hours (0-23) */
+  unsigned int minutes: 6;	/* minutes (0-59) */
+  unsigned int seconds: 6;	/* seconds (0-59) */
+  unsigned int zoccident : 1;	/* non-zero if west of UTC */
+  unsigned int zhours : 4;	/* hours from UTC (0-12) */
+  unsigned int zminutes: 6;	/* minutes (0-59) */
+			/* system flags */
+  unsigned int seen : 1;	/* system Seen flag */
+  unsigned int deleted : 1;	/* system Deleted flag */
+  unsigned int flagged : 1; 	/* system Flagged flag */
+  unsigned int answered : 1;	/* system Answered flag */
+  unsigned int draft : 1;	/* system Draft flag */
+  unsigned int recent : 1;	/* system Recent flag */
+			/* message status */
+  unsigned int valid : 1;	/* elt has valid flags */
+  unsigned int searched : 1;	/* message was searched */
+  unsigned int sequence : 1;	/* message is in sequence */
+			/* reserved for use by main program */
+  unsigned int spare : 1;	/* first spare bit */
+  unsigned int spare2 : 1;	/* second spare bit */
+  unsigned int spare3 : 1;	/* third spare bit */
+  unsigned int spare4 : 1;	/* fourth spare bit */
+  unsigned int spare5 : 1;	/* fifth spare bit */
+  unsigned int spare6 : 1;	/* sixth spare bit */
+  unsigned int spare7 : 1;	/* seventh spare bit */
+  unsigned int spare8 : 1;	/* eighth spare bit */
+  void *sparep;			/* spare pointer */
+  unsigned long user_flags;	/* user-assignable flags */
+} MESSAGECACHE;
+
+/* String structure */
+
+#define STRINGDRIVER struct string_driver
+
+typedef struct mailstring {
+  void *data;			/* driver-dependent data */
+  unsigned long data1;		/* driver-dependent data */
+  unsigned long size;		/* total length of string */
+  char *chunk;			/* base address of chunk */
+  unsigned long chunksize;	/* size of chunk */
+  unsigned long offset;		/* offset of this chunk in base */
+  char *curpos;			/* current position in chunk */
+  unsigned long cursize;	/* number of bytes remaining in chunk */
+  STRINGDRIVER *dtb;		/* driver that handles this type of string */
+} STRING;
+
+
+/* Dispatch table for string driver */
+
+STRINGDRIVER {
+				/* initialize string driver */
+  void (*init) (STRING *s,void *data,unsigned long size);
+				/* get next character in string */
+  char (*next) (STRING *s);
+				/* set position in string */
+  void (*setpos) (STRING *s,unsigned long i);
+};
+
+
+/* Stringstruct access routines */
+
+#define INIT(s,d,data,size) ((*((s)->dtb = &d)->init) (s,data,size))
+#define SIZE(s) ((s)->size - GETPOS (s))
+#define CHR(s) (*(s)->curpos)
+#define SNX(s) (--(s)->cursize ? *(s)->curpos++ : (*(s)->dtb->next) (s))
+#define GETPOS(s) ((s)->offset + ((s)->curpos - (s)->chunk))
+#define SETPOS(s,i) (*(s)->dtb->setpos) (s,i)
+
+/* Search program */
+
+#define SEARCHPGM struct search_program
+#define SEARCHHEADER struct search_header
+#define SEARCHSET struct search_set
+#define SEARCHOR struct search_or
+#define SEARCHPGMLIST struct search_pgm_list
+
+
+SEARCHHEADER {			/* header search */
+  SIZEDTEXT line;		/* header line */
+  SIZEDTEXT text;		/* text in header */
+  SEARCHHEADER *next;		/* next in list */
+};
+
+
+SEARCHSET {			/* message set */
+  unsigned long first;		/* sequence number */
+  unsigned long last;		/* last value, if a range */
+  SEARCHSET *next;		/* next in list */
+};
+
+
+SEARCHOR {
+  SEARCHPGM *first;		/* first program */
+  SEARCHPGM *second;		/* second program */
+  SEARCHOR *next;		/* next in list */
+};
+
+
+SEARCHPGMLIST {
+  SEARCHPGM *pgm;		/* search program */
+  SEARCHPGMLIST *next;		/* next in list */
+};
+
+SEARCHPGM {			/* search program */
+  SEARCHSET *msgno;		/* message numbers */
+  SEARCHSET *uid;		/* unique identifiers */
+  SEARCHOR *or;			/* or'ed in programs */
+  SEARCHPGMLIST *not;		/* and'ed not program */
+  SEARCHHEADER *header;		/* list of headers */
+  STRINGLIST *bcc;		/* bcc recipients */
+  STRINGLIST *body;		/* text in message body */
+  STRINGLIST *cc;		/* cc recipients */
+  STRINGLIST *from;		/* originator */
+  STRINGLIST *keyword;		/* keywords */
+  STRINGLIST *unkeyword;	/* unkeywords */
+  STRINGLIST *subject;		/* text in subject */
+  STRINGLIST *text;		/* text in headers and body */
+  STRINGLIST *to;		/* to recipients */
+  unsigned long larger;		/* larger than this size */
+  unsigned long smaller;	/* smaller than this size */
+  unsigned long older;		/* older than this interval */
+  unsigned long younger;	/* younger than this interval */
+  unsigned short sentbefore;	/* sent before this date */
+  unsigned short senton;	/* sent on this date */
+  unsigned short sentsince;	/* sent since this date */
+  unsigned short before;	/* before this date */
+  unsigned short on;		/* on this date */
+  unsigned short since;		/* since this date */
+  unsigned int answered : 1;	/* answered messages */
+  unsigned int unanswered : 1;	/* unanswered messages */
+  unsigned int deleted : 1;	/* deleted messages */
+  unsigned int undeleted : 1;	/* undeleted messages */
+  unsigned int draft : 1;	/* message draft */
+  unsigned int undraft : 1;	/* message undraft */
+  unsigned int flagged : 1;	/* flagged messages */
+  unsigned int unflagged : 1;	/* unflagged messages */
+  unsigned int recent : 1;	/* recent messages */
+  unsigned int old : 1;		/* old messages */
+  unsigned int seen : 1;	/* seen messages */
+  unsigned int unseen : 1;	/* unseen messages */
+  /* These must be simulated in IMAP */
+  STRINGLIST *return_path;	/* error return address */
+  STRINGLIST *sender;		/* sender address list */
+  STRINGLIST *reply_to;		/* reply address list */
+  STRINGLIST *in_reply_to;	/* replied message ID */
+  STRINGLIST *message_id;	/* message ID */
+  STRINGLIST *newsgroups;	/* USENET newsgroups */
+  STRINGLIST *followup_to;	/* USENET reply newsgroups */
+  STRINGLIST *references;	/* USENET references */
+};
+
+
+/* Mailbox status */
+
+typedef struct mbx_status {
+  long flags;			/* validity flags */
+  unsigned long messages;	/* number of messages */
+  unsigned long recent;		/* number of recent messages */
+  unsigned long unseen;		/* number of unseen messages */
+  unsigned long uidnext;	/* next UID to be assigned */
+  unsigned long uidvalidity;	/* UID validity value */
+} MAILSTATUS;
+
+/* Sort program */
+
+typedef void (*postsort_t) (void *sc);
+
+#define SORTPGM struct sort_program
+
+SORTPGM {
+  unsigned int reverse : 1;	/* sort function is to be reversed */
+  unsigned int abort : 1;	/* abort sorting */
+  short function;		/* sort function */
+  unsigned long nmsgs;		/* number of messages being sorted */
+  struct {
+    unsigned long cached;	/* number of messages cached so far */
+    unsigned long sorted;	/* number of messages sorted so far */
+    unsigned long postsorted;	/* number of postsorted messages so far */
+  } progress;
+  postsort_t postsort;		/* post sorter */
+  SORTPGM *next;		/* next function */
+};
+
+
+/* Sort cache */
+
+#define SORTCACHE struct sort_cache
+
+SORTCACHE {
+  unsigned int sorted : 1;	/* message has been sorted */
+  unsigned int postsorted : 1;	/* message has been postsorted */
+  unsigned int refwd : 1;	/* subject is a re or fwd */
+  unsigned int dirty : 1;	/* has data not written to backup */
+  SORTPGM *pgm;			/* sort program */
+  unsigned long num;		/* message number (sequence or UID) */
+  unsigned long date;		/* sent date */
+  unsigned long arrival;	/* arrival date */
+  unsigned long size;		/* message size */
+  char *from;			/* from string */
+  char *to;			/* to string */
+  char *cc;			/* cc string */
+  char *subject;		/* extracted subject string */
+  char *message_id;		/* message-id string */
+  char *unique;			/* unique string, normally message-id */
+  STRINGLIST *references;	/* references string */
+};
+
+/* ACL list */
+
+#define ACLLIST struct acl_list
+
+ACLLIST {
+  char *identifier;		/* authentication identifier */
+  char *rights;			/* access rights */
+  ACLLIST *next;
+};
+
+/* Quota resource list */
+
+#define QUOTALIST struct quota_list
+
+QUOTALIST {
+  char *name;			/* resource name */
+  unsigned long usage;		/* resource usage */
+  unsigned long limit;		/* resource limit */
+  QUOTALIST *next;		/* next resource */
+};
+
+/* Mail Access I/O stream */
+
+
+/* Structure for mail driver dispatch */
+
+#define DRIVER struct driver	
+
+
+/* Mail I/O stream */
+	
+typedef struct mail_stream {
+  DRIVER *dtb;			/* dispatch table for this driver */
+  void *local;			/* pointer to driver local data */
+  char *mailbox;		/* mailbox name (canonicalized) */
+  char *original_mailbox;	/* mailbox name (non-canonicalized) */
+  unsigned short use;		/* stream use count */
+  unsigned short sequence;	/* stream sequence */
+  unsigned int inbox : 1;	/* stream open on an INBOX */
+  unsigned int lock : 1;	/* stream lock flag */
+  unsigned int debug : 1;	/* stream debug flag */
+  unsigned int silent : 1;	/* don't pass events to main program */
+  unsigned int rdonly : 1;	/* stream read-only flag */
+  unsigned int anonymous : 1;	/* stream anonymous access flag */
+  unsigned int scache : 1;	/* stream short cache flag */
+  unsigned int halfopen : 1;	/* stream half-open flag */
+  unsigned int secure : 1;	/* stream secure flag */
+  unsigned int tryssl : 1;	/* stream tryssl flag */
+  unsigned int mulnewsrc : 1;	/* stream use multiple newsrc files */
+  unsigned int perm_seen : 1;	/* permanent Seen flag */
+  unsigned int perm_deleted : 1;/* permanent Deleted flag */
+  unsigned int perm_flagged : 1;/* permanent Flagged flag */
+  unsigned int perm_answered :1;/* permanent Answered flag */
+  unsigned int perm_draft : 1;	/* permanent Draft flag */
+  unsigned int kwd_create : 1;	/* can create new keywords */
+  unsigned int uid_nosticky : 1;/* UIDs are not preserved */
+  unsigned int unhealthy : 1;	/* unhealthy protocol negotiations */
+  unsigned int nokod : 1;	/* suppress kiss-of-death */
+  unsigned int sniff : 1;	/* metadata only */
+  unsigned long perm_user_flags;/* mask of permanent user flags */
+  unsigned long gensym;		/* generated tag */
+  unsigned long nmsgs;		/* # of associated msgs */
+  unsigned long recent;		/* # of recent msgs */
+  unsigned long uid_validity;	/* UID validity sequence */
+  unsigned long uid_last;	/* last assigned UID */
+  char *user_flags[NUSERFLAGS];	/* pointers to user flags in bit order */
+  unsigned long cachesize;	/* size of message cache */
+  MESSAGECACHE **cache;		/* message cache array */
+  SORTCACHE **sc;		/* sort cache array */
+  unsigned long msgno;		/* message number of `current' message */
+  ENVELOPE *env;		/* scratch buffer for envelope */
+  BODY *body;			/* scratch buffer for body */
+  SIZEDTEXT text;		/* scratch buffer for text */
+  struct {
+    char *name;			/* mailbox name to snarf from */
+    unsigned long time;		/* last snarf time */
+    long options;		/* snarf open options */
+  } snarf;
+  struct {			/* internal use only */
+    struct {			/* search temporaries */
+      STRINGLIST *string;	/* string(s) to search */
+      long result;		/* search result */
+      char *text;		/* cache of fetched text */
+    } search;
+    STRING string;		/* stringstruct return hack */
+  } private;
+			/* reserved for use by main program */
+  void *sparep;			/* spare pointer */
+  unsigned int spare : 1;	/* first spare bit */
+  unsigned int spare2 : 1;	/* second spare bit */
+  unsigned int spare3 : 1;	/* third spare bit */
+  unsigned int spare4 : 1;	/* fourth spare bit */
+  unsigned int spare5 : 1;	/* fifth spare bit */
+  unsigned int spare6 : 1;	/* sixth spare bit */
+  unsigned int spare7 : 1;	/* seventh spare bit */
+  unsigned int spare8 : 1;	/* eighth spare bit */
+} MAILSTREAM;
+
+/* Mail I/O stream handle */
+
+typedef struct mail_stream_handle {
+  MAILSTREAM *stream;		/* pointer to mail stream */
+  unsigned short sequence;	/* sequence of what we expect stream to be */
+} MAILHANDLE;
+
+
+/* Message overview */
+
+typedef struct mail_overview {
+  char *subject;		/* message subject string */
+  ADDRESS *from;		/* originator address list */
+  char *date;			/* message composition date string */
+  char *message_id;		/* message ID */
+  char *references;		/* USENET references */
+  struct {			/* may be 0 or NUL if unknown/undefined */
+    unsigned long octets;	/* message octets (probably LF-newline form) */
+    unsigned long lines;	/* message lines */
+    char *xref;			/* cross references */
+  } optional;
+} OVERVIEW;
+
+/* Network access I/O stream */
+
+
+/* Structure for network driver dispatch */
+
+#define NETDRIVER struct net_driver
+
+
+/* Network transport I/O stream */
+
+typedef struct net_stream {
+  void *stream;			/* driver's I/O stream */
+  NETDRIVER *dtb;		/* network driver */
+} NETSTREAM;
+
+
+/* Network transport driver dispatch */
+
+NETDRIVER {
+  void *(*open) (char *host,char *service,unsigned long port);
+  void *(*aopen) (NETMBX *mb,char *service,char *usrbuf);
+  char *(*getline) (void *stream);
+  long (*getbuffer) (void *stream,unsigned long size,char *buffer);
+  long (*soutr) (void *stream,char *string);
+  long (*sout) (void *stream,char *string,unsigned long size);
+  void (*close) (void *stream);
+  char *(*host) (void *stream);
+  char *(*remotehost) (void *stream);
+  unsigned long (*port) (void *stream);
+  char *(*localhost) (void *stream);
+};
+
+
+/* Mailgets data identifier */
+
+typedef struct getsdata {
+  MAILSTREAM *stream;
+  unsigned long msgno;
+  char *what;
+  STRINGLIST *stl;
+  unsigned long first;
+  unsigned long last;
+  long flags;
+} GETS_DATA;
+
+
+#define INIT_GETS(md,s,m,w,f,l) \
+  md.stream = s, md.msgno = m, md.what = w, md.first = f, md.last = l, \
+  md.stl = NIL, md.flags = NIL;
+
+/* Mail delivery I/O stream */
+
+typedef struct send_stream {
+  NETSTREAM *netstream;		/* network I/O stream */
+  char *host;			/* SMTP service host */
+  char *reply;			/* last reply string */
+  long replycode;		/* last reply code */
+  unsigned int debug : 1;	/* stream debug flag */
+  unsigned int sensitive : 1;	/* sensitive data in progress */
+  unsigned int loser : 1;	/* server is a loser */
+  unsigned int saslcancel : 1;	/* SASL cancelled by protocol */
+  union {			/* protocol specific */
+    struct {			/* SMTP specific */
+      unsigned int ok : 1;	/* supports ESMTP */
+      struct {			/* service extensions */
+	unsigned int send : 1;	/* supports SEND */
+	unsigned int soml : 1;	/* supports SOML */
+	unsigned int saml : 1;	/* supports SAML */
+	unsigned int expn : 1;	/* supports EXPN */
+	unsigned int help : 1;	/* supports HELP */
+	unsigned int turn : 1;	/* supports TURN */
+	unsigned int etrn : 1;	/* supports ETRN */
+	unsigned int starttls:1;/* supports STARTTLS */
+	unsigned int relay : 1;	/* supports relaying */
+	unsigned int pipe : 1;	/* supports pipelining */
+	unsigned int ensc : 1;	/* supports enhanced status codes */
+	unsigned int bmime : 1;	/* supports BINARYMIME */
+	unsigned int chunk : 1;	/* supports CHUNKING */
+      } service;
+      struct {			/* 8-bit MIME transport */
+	unsigned int ok : 1;	/* supports 8-bit MIME */
+	unsigned int want : 1;	/* want 8-bit MIME */
+      } eightbit;
+      struct {			/* delivery status notification */
+	unsigned int ok : 1;	/* supports DSN */
+	unsigned int want : 1;	/* want DSN */
+	struct {		/* notification options */
+				/* notify on failure */
+	  unsigned int failure : 1;
+				/* notify on delay */
+	  unsigned int delay : 1;
+				/* notify on success */
+	  unsigned int success : 1;
+	} notify;
+	unsigned int full : 1;	/* return full headers */
+	char *envid;		/* envelope identifier as xtext */
+      } dsn;
+      struct {			/* size declaration */
+	unsigned int ok : 1;	/* supports SIZE */
+	unsigned long limit;	/* maximum size supported */
+      } size;
+      struct {			/* deliverby declaration */
+	unsigned int ok : 1;	/* supports DELIVERBY */
+	unsigned long minby;	/* minimum by-time */
+      } deliverby;
+      struct {			/* authenticated turn */
+	unsigned int ok : 1;	/* supports ATRN */
+	char *domains;		/* domains */
+      } atrn;
+				/* supported SASL authenticators */
+      unsigned int auth : MAXAUTHENTICATORS;
+    } esmtp;
+    struct {			/* NNTP specific */
+      unsigned int post : 1;	/* supports POST */
+      struct {			/* NNTP extensions */
+	unsigned int ok : 1;	/* supports extensions */
+				/* supports LISTGROUP */
+	unsigned int listgroup : 1;
+	unsigned int over : 1;	/* supports OVER */
+	unsigned int hdr : 1;	/* supports HDR */
+	unsigned int pat : 1;	/* supports PAT */
+				/* supports STARTTLS */
+	unsigned int starttls : 1;
+				/* server has MULTIDOMAIN */
+	unsigned int multidomain : 1;
+				/* supports AUTHINFO USER */
+	unsigned int authuser : 1;
+				/* supported authenticators */
+	unsigned int sasl : MAXAUTHENTICATORS;
+      } ext;
+    } nntp;
+  } protocol;
+} SENDSTREAM;
+
+/* Jacket into external interfaces */
+
+typedef long (*readfn_t) (void *stream,unsigned long size,char *buffer);
+typedef char *(*mailgets_t) (readfn_t f,void *stream,unsigned long size,
+			     GETS_DATA *md);
+typedef char *(*readprogress_t) (GETS_DATA *md,unsigned long octets);
+typedef void *(*mailcache_t) (MAILSTREAM *stream,unsigned long msgno,long op);
+typedef long (*mailproxycopy_t) (MAILSTREAM *stream,char *sequence,
+				 char *mailbox,long options);
+typedef long (*tcptimeout_t) (long overall,long last, char *host);
+typedef void *(*authchallenge_t) (void *stream,unsigned long *len);
+typedef long (*authrespond_t) (void *stream,char *s,unsigned long size);
+typedef long (*authcheck_t) (void);
+typedef long (*authclient_t) (authchallenge_t challenger,
+			      authrespond_t responder,char *service,NETMBX *mb,
+			      void *s,unsigned long *trial,char *user);
+typedef char *(*authresponse_t) (void *challenge,unsigned long clen,
+				 unsigned long *rlen);
+typedef char *(*authserver_t) (authresponse_t responder,int argc,char *argv[]);
+typedef void (*smtpverbose_t) (char *buffer);
+typedef void (*imapenvelope_t) (MAILSTREAM *stream,unsigned long msgno,
+				ENVELOPE *env);
+typedef char *(*imapreferral_t) (MAILSTREAM *stream,char *url,long code);
+typedef void (*overview_t) (MAILSTREAM *stream,unsigned long uid,OVERVIEW *ov,
+			    unsigned long msgno);
+typedef unsigned long *(*sorter_t) (MAILSTREAM *stream,char *charset,
+				    SEARCHPGM *spg,SORTPGM *pgm,long flags);
+typedef void (*parseline_t) (ENVELOPE *env,char *hdr,char *data,char *host);
+typedef ADDRESS *(*parsephrase_t) (char *phrase,char *end,char *host);
+typedef void *(*blocknotify_t) (int reason,void *data);
+typedef long (*kinit_t) (char *host,char *reason);
+typedef void (*sendcommand_t) (MAILSTREAM *stream,char *cmd,long flags);
+typedef char *(*newsrcquery_t) (MAILSTREAM *stream,char *mulname,char *name);
+typedef void (*getacl_t) (MAILSTREAM *stream,char *mailbox,ACLLIST *acl);
+typedef void (*listrights_t) (MAILSTREAM *stream,char *mailbox,char *id,
+			      char *alwaysrights,STRINGLIST *possiblerights);
+typedef void (*myrights_t) (MAILSTREAM *stream,char *mailbox,char *rights);
+typedef void (*quota_t) (MAILSTREAM *stream,char *qroot,QUOTALIST *qlist);
+typedef void (*quotaroot_t) (MAILSTREAM *stream,char *mbx,STRINGLIST *qroot);
+typedef void (*sortresults_t) (MAILSTREAM *stream,unsigned long *list,
+			       unsigned long size);
+typedef char *(*userprompt_t) (void);
+typedef long (*append_t) (MAILSTREAM *stream,void *data,char **flags,
+			  char **date,STRING **message);
+typedef void (*copyuid_t) (MAILSTREAM *stream,char *mailbox,
+			   unsigned long uidvalidity,SEARCHSET *sourceset,
+			   SEARCHSET *destset);
+typedef void (*appenduid_t) (char *mailbox,unsigned long uidvalidity,
+			     SEARCHSET *set);
+typedef long (*dirfmttest_t) (char *name);
+typedef long (*scancontents_t) (char *name,char *contents,unsigned long csiz,
+				unsigned long fsiz);
+
+typedef void (*freeeltsparep_t) (void **sparep);
+typedef void (*freeenvelopesparep_t) (void **sparep);
+typedef void (*freebodysparep_t) (void **sparep);
+typedef void (*freestreamsparep_t) (void **sparep);
+typedef void *(*sslstart_t) (void *stream,char *host,unsigned long flags);
+typedef long (*sslcertificatequery_t) (char *reason,char *host,char *cert);
+typedef void (*sslfailure_t) (char *host,char *reason,unsigned long flags);
+typedef void (*logouthook_t) (void *data);
+typedef char *(*sslclientcert_t) (void);
+typedef char *(*sslclientkey_t) (void);
+
+/* Globals */
+
+extern char *body_types[];	/* defined body type strings */
+extern char *body_encodings[];	/* defined body encoding strings */
+extern const char *days[];	/* day name strings */
+extern const char *months[];	/* month name strings */
+
+/* Threading */
+
+/* Thread node */
+
+#define THREADNODE struct thread_node
+
+THREADNODE {
+  unsigned long num;		/* message number */
+  SORTCACHE *sc;		/* (internal use) sortcache entry */
+  THREADNODE *branch;		/* branch at this point in tree */
+  THREADNODE *next;		/* next node */
+};
+
+typedef void (*threadresults_t) (MAILSTREAM *stream,THREADNODE *tree);
+
+
+/* Thread dispatch */
+
+#define THREADER struct threader_list
+
+THREADER {
+  char *name;			/* name of threader */
+  THREADNODE *(*dispatch) (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
+			   long flags,sorter_t sorter);
+  THREADER *next;
+};
+
+
+/* Container for references threading */
+
+typedef void ** container_t;
+
+/* Namespaces */
+
+#define NAMESPACE struct mail_namespace
+
+NAMESPACE {
+  char *name;			/* name of this namespace */
+  int delimiter;		/* hierarchy delimiter */
+  PARAMETER *param;		/* namespace parameters */
+  NAMESPACE *next;		/* next namespace */
+};
+
+
+/* Authentication */
+
+#define AUTHENTICATOR struct mail_authenticator
+
+AUTHENTICATOR {
+  long flags;			/* authenticator flags */
+  char *name;			/* name of this authenticator */
+  authcheck_t valid;		/* authenticator valid on this system */
+  authclient_t client;		/* client function that supports it */
+  authserver_t server;		/* server function that supports it */
+  AUTHENTICATOR *next;		/* next authenticator */
+};
+
+/* Mail driver dispatch */
+
+DRIVER {
+  char *name;			/* driver name */
+  unsigned long flags;		/* driver flags */
+  DRIVER *next;			/* next driver */
+				/* mailbox is valid for us */
+  DRIVER *(*valid) (char *mailbox);
+				/* manipulate driver parameters */
+  void *(*parameters) (long function,void *value);
+				/* scan mailboxes */
+  void (*scan) (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+				/* list mailboxes */
+  void (*list) (MAILSTREAM *stream,char *ref,char *pat);
+				/* list subscribed mailboxes */
+  void (*lsub) (MAILSTREAM *stream,char *ref,char *pat);
+				/* subscribe to mailbox */
+  long (*subscribe) (MAILSTREAM *stream,char *mailbox);
+				/* unsubscribe from mailbox */
+  long (*unsubscribe) (MAILSTREAM *stream,char *mailbox);
+				/* create mailbox */
+  long (*create) (MAILSTREAM *stream,char *mailbox);
+				/* delete mailbox */
+  long (*mbxdel) (MAILSTREAM *stream,char *mailbox);
+				/* rename mailbox */
+  long (*mbxren) (MAILSTREAM *stream,char *old,char *newname);
+				/* status of mailbox */
+  long (*status) (MAILSTREAM *stream,char *mbx,long flags);
+
+				/* open mailbox */
+  MAILSTREAM *(*open) (MAILSTREAM *stream);
+				/* close mailbox */
+  void (*close) (MAILSTREAM *stream,long options);
+				/* fetch message "fast" attributes */
+  void (*fast) (MAILSTREAM *stream,char *sequence,long flags);
+				/* fetch message flags */
+  void (*msgflags) (MAILSTREAM *stream,char *sequence,long flags);
+				/* fetch message overview */
+  long (*overview) (MAILSTREAM *stream,overview_t ofn);
+				/* fetch message envelopes */
+  ENVELOPE *(*structure) (MAILSTREAM *stream,unsigned long msgno,BODY **body,
+			  long flags);
+				/* return RFC-822 header */
+  char *(*header) (MAILSTREAM *stream,unsigned long msgno,
+		   unsigned long *length,long flags);
+				/* return RFC-822 text */
+  long (*text) (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
+				/* load cache */
+  long (*msgdata) (MAILSTREAM *stream,unsigned long msgno,char *section,
+		   unsigned long first,unsigned long last,STRINGLIST *lines,
+		   long flags);
+				/* return UID for message */
+  unsigned long (*uid) (MAILSTREAM *stream,unsigned long msgno);
+				/* return message number from UID */
+  unsigned long (*msgno) (MAILSTREAM *stream,unsigned long uid);
+				/* modify flags */
+  void (*flag) (MAILSTREAM *stream,char *sequence,char *flag,long flags);
+				/* per-message modify flags */
+  void (*flagmsg) (MAILSTREAM *stream,MESSAGECACHE *elt);
+				/* search for message based on criteria */
+  long (*search) (MAILSTREAM *stream,char *charset,SEARCHPGM *pgm,long flags);
+				/* sort messages */
+  unsigned long *(*sort) (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
+			  SORTPGM *pgm,long flags);
+				/* thread messages */
+  THREADNODE *(*thread) (MAILSTREAM *stream,char *type,char *charset,
+			 SEARCHPGM *spg,long flag);
+				/* ping mailbox to see if still alive */
+  long (*ping) (MAILSTREAM *stream);
+				/* check for new messages */
+  void (*check) (MAILSTREAM *stream);
+				/* expunge deleted messages */
+  long (*expunge) (MAILSTREAM *stream,char *sequence,long options);
+				/* copy messages to another mailbox */
+  long (*copy) (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
+				/* append string message to mailbox */
+  long (*append) (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+				/* garbage collect stream */
+  void (*gc) (MAILSTREAM *stream,long gcflags);
+};
+
+
+#include "linkage.h"
+
+/* Compatibility support names for old interfaces */
+
+#define GET_TRYALTFIRST GET_TRYSSLFIRST
+#define SET_TRYALTFIRST SET_TRYSSLFIRST
+#define GET_IMAPTRYALT GET_IMAPTRYSSL
+#define SET_IMAPTRYALT SET_IMAPTRYSSL
+#define OP_TRYALT OP_TRYSSL
+#define altflag sslflag
+
+#define mail_close(stream) \
+  mail_close_full (stream,NIL)
+#define mail_fetchfast(stream,sequence) \
+  mail_fetch_fast (stream,sequence,NIL)
+#define mail_fetchfast_full mail_fetch_fast
+#define mail_fetchflags(stream,sequence) \
+  mail_fetch_flags (stream,sequence,NIL)
+#define mail_fetchflags_full mail_fetch_flags
+#define mail_fetchenvelope(stream,msgno) \
+  mail_fetch_structure (stream,msgno,NIL,NIL)
+#define mail_fetchstructure(stream,msgno,body) \
+  mail_fetch_structure (stream,msgno,body,NIL)
+#define mail_fetchstructure_full mail_fetch_structure
+#define mail_fetchheader(stream,msgno) \
+  mail_fetch_header (stream,msgno,NIL,NIL,NIL,FT_PEEK)
+#define mail_fetchheader_full(stream,msgno,lines,len,flags) \
+  mail_fetch_header (stream,msgno,NIL,lines,len,FT_PEEK | (flags))
+#define mail_fetchtext(stream,msgno) \
+  mail_fetch_text (stream,msgno,NIL,NIL,NIL)
+#define mail_fetchtext_full(stream,msgno,length,flags) \
+  mail_fetch_text (stream,msgno,NIL,length,flags)
+#define mail_fetchbody(stream,msgno,section,length) \
+  mail_fetch_body (stream,msgno,section,length,NIL)
+#define mail_fetchbody_full mail_fetch_body
+#define mail_setflag(stream,sequence,flag) \
+  mail_flag (stream,sequence,flag,ST_SET)
+#define mail_setflag_full(stream,sequence,flag,flags) \
+  mail_flag (stream,sequence,flag,ST_SET | (flags))
+#define mail_clearflag(stream,sequence,flag) \
+  mail_flag (stream,sequence,flag,NIL)
+#define mail_clearflag_full mail_flag
+#define mail_search(stream,criteria) \
+  mail_search_full (stream,NIL,mail_criteria (criteria),SE_FREE);
+#define mail_expunge(stream) \
+  mail_expunge_full (stream,NIL,NIL)
+#define mail_copy(stream,sequence,mailbox) \
+  mail_copy_full (stream,sequence,mailbox,NIL)
+#define mail_move(stream,sequence,mailbox) \
+  mail_copy_full (stream,sequence,mailbox,CP_MOVE)
+#define mail_append(stream,mailbox,message) \
+  mail_append_full (stream,mailbox,NIL,NIL,message)
+
+/* Interfaces for SVR4 locking brain-damage workaround */
+
+/* Driver dispatching */
+
+#define SAFE_DELETE(dtb,stream,mailbox) (*dtb->mbxdel) (stream,mailbox)
+#define SAFE_RENAME(dtb,stream,old,newname) (*dtb->mbxren) (stream,old,newname)
+#define SAFE_STATUS(dtb,stream,mbx,flags) (*dtb->status) (stream,mbx,flags)
+#define SAFE_COPY(dtb,stream,sequence,mailbox,options) \
+  (*dtb->copy) (stream,sequence,mailbox,options)
+#define SAFE_APPEND(dtb,stream,mailbox,af,data) \
+  (*dtb->append) (stream,mailbox,af,data)
+#define SAFE_SCAN_CONTENTS(dtb,name,contents,csiz,fsiz) \
+  scan_contents (dtb,name,contents,csiz,fsiz)
+
+
+/* Driver callbacks */
+
+#define MM_EXISTS mm_exists
+#define MM_EXPUNGED mm_expunged
+#define MM_FLAGS mm_flags
+#define MM_NOTIFY mm_notify
+#define MM_STATUS mm_status
+#define MM_LOG mm_log
+#define MM_CRITICAL mm_critical
+#define MM_NOCRITICAL mm_nocritical
+#define MM_DISKERROR mm_diskerror
+#define MM_FATAL mm_fatal
+#define MM_APPEND(af) (*af)
+
+/* Function prototypes */
+
+void mm_searched (MAILSTREAM *stream,unsigned long number);
+void mm_exists (MAILSTREAM *stream,unsigned long number);
+void mm_expunged (MAILSTREAM *stream,unsigned long number);
+void mm_flags (MAILSTREAM *stream,unsigned long number);
+void mm_notify (MAILSTREAM *stream,char *string,long errflg);
+void mm_list (MAILSTREAM *stream,int delimiter,char *name,long attributes);
+void mm_lsub (MAILSTREAM *stream,int delimiter,char *name,long attributes);
+void mm_status (MAILSTREAM *stream,char *mailbox,MAILSTATUS *status);
+void mm_log (char *string,long errflg);
+void mm_dlog (char *string);
+void mm_login (NETMBX *mb,char *user,char *pwd,long trial);
+void mm_critical (MAILSTREAM *stream);
+void mm_nocritical (MAILSTREAM *stream);
+long mm_diskerror (MAILSTREAM *stream,long errcode,long serious);
+void mm_fatal (char *string);
+void *mm_cache (MAILSTREAM *stream,unsigned long msgno,long op);
+
+extern STRINGDRIVER mail_string;
+void mail_versioncheck (char *version);
+void mail_link (DRIVER *driver);
+void *mail_parameters (MAILSTREAM *stream,long function,void *value);
+DRIVER *mail_valid (MAILSTREAM *stream,char *mailbox,char *purpose);
+DRIVER *mail_valid_net (char *name,DRIVER *drv,char *host,char *mailbox);
+long mail_valid_net_parse (char *name,NETMBX *mb);
+long mail_valid_net_parse_work (char *name,NETMBX *mb,char *service);
+void mail_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+void mail_list (MAILSTREAM *stream,char *ref,char *pat);
+void mail_lsub (MAILSTREAM *stream,char *ref,char *pat);
+long mail_subscribe (MAILSTREAM *stream,char *mailbox);
+long mail_unsubscribe (MAILSTREAM *stream,char *mailbox);
+long mail_create (MAILSTREAM *stream,char *mailbox);
+long mail_delete (MAILSTREAM *stream,char *mailbox);
+long mail_rename (MAILSTREAM *stream,char *old,char *newname);
+char *mail_utf7_valid (char *mailbox);
+long mail_status (MAILSTREAM *stream,char *mbx,long flags);
+long mail_status_default (MAILSTREAM *stream,char *mbx,long flags);
+MAILSTREAM *mail_open (MAILSTREAM *stream,char *name,long options);
+MAILSTREAM *mail_open_work (DRIVER *d,MAILSTREAM *stream,char *name,
+			    long options);
+MAILSTREAM *mail_close_full (MAILSTREAM *stream,long options);
+MAILHANDLE *mail_makehandle (MAILSTREAM *stream);
+void mail_free_handle (MAILHANDLE **handle);
+MAILSTREAM *mail_stream (MAILHANDLE *handle);
+
+void mail_fetch_fast (MAILSTREAM *stream,char *sequence,long flags);
+void mail_fetch_flags (MAILSTREAM *stream,char *sequence,long flags);
+void mail_fetch_overview (MAILSTREAM *stream,char *sequence,overview_t ofn);
+void mail_fetch_overview_sequence (MAILSTREAM *stream,char *sequence,
+				   overview_t ofn);
+void mail_fetch_overview_default (MAILSTREAM *stream,overview_t ofn);
+ENVELOPE *mail_fetch_structure (MAILSTREAM *stream,unsigned long msgno,
+				BODY **body,long flags);
+char *mail_fetch_message (MAILSTREAM *stream,unsigned long msgno,
+			  unsigned long *len,long flags);
+char *mail_fetch_header (MAILSTREAM *stream,unsigned long msgno,char *section,
+			 STRINGLIST *lines,unsigned long *len,long flags);
+char *mail_fetch_text (MAILSTREAM *stream,unsigned long msgno,char *section,
+		       unsigned long *len,long flags);
+char *mail_fetch_mime (MAILSTREAM *stream,unsigned long msgno,char *section,
+		       unsigned long *len,long flags);
+char *mail_fetch_body (MAILSTREAM *stream,unsigned long msgno,char *section,
+		       unsigned long *len,long flags);
+long mail_partial_text (MAILSTREAM *stream,unsigned long msgno,char *section,
+			unsigned long first,unsigned long last,long flags);
+long mail_partial_body (MAILSTREAM *stream,unsigned long msgno,char *section,
+			unsigned long first,unsigned long last,long flags);
+char *mail_fetch_text_return (GETS_DATA *md,SIZEDTEXT *t,unsigned long *len);
+char *mail_fetch_string_return (GETS_DATA *md,STRING *bs,unsigned long i,
+				unsigned long *len,long flags);
+long mail_read (void *stream,unsigned long size,char *buffer);
+unsigned long mail_uid (MAILSTREAM *stream,unsigned long msgno);
+unsigned long mail_msgno (MAILSTREAM *stream,unsigned long uid);
+void mail_fetchfrom (char *s,MAILSTREAM *stream,unsigned long msgno,
+		     long length);
+void mail_fetchsubject (char *s,MAILSTREAM *stream,unsigned long msgno,
+			long length);
+MESSAGECACHE *mail_elt (MAILSTREAM *stream,unsigned long msgno);
+void mail_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);
+long mail_search_full (MAILSTREAM *stream,char *charset,SEARCHPGM *pgm,
+		       long flags);
+long mail_search_default (MAILSTREAM *stream,char *charset,SEARCHPGM *pgm,
+			  long flags);
+long mail_ping (MAILSTREAM *stream);
+void mail_check (MAILSTREAM *stream);
+long mail_expunge_full (MAILSTREAM *stream,char *sequence,long options);
+long mail_copy_full (MAILSTREAM *stream,char *sequence,char *mailbox,
+		     long options);
+long mail_append_full (MAILSTREAM *stream,char *mailbox,char *flags,char *date,
+		       STRING *message);
+long mail_append_multiple (MAILSTREAM *stream,char *mailbox,append_t af,
+			   void *data);
+void mail_gc (MAILSTREAM *stream,long gcflags);
+void mail_gc_msg (MESSAGE *msg,long gcflags);
+void mail_gc_body (BODY *body);
+
+BODY *mail_body (MAILSTREAM *stream,unsigned long msgno,
+		 unsigned char *section);
+char *mail_date (char *string,MESSAGECACHE *elt);
+char *mail_cdate (char *string,MESSAGECACHE *elt);
+long mail_parse_date (MESSAGECACHE *elt,unsigned char *string);
+void mail_exists (MAILSTREAM *stream,unsigned long nmsgs);
+void mail_recent (MAILSTREAM *stream,unsigned long recent);
+void mail_expunged (MAILSTREAM *stream,unsigned long msgno);
+void mail_lock (MAILSTREAM *stream);
+void mail_unlock (MAILSTREAM *stream);
+void mail_debug (MAILSTREAM *stream);
+void mail_nodebug (MAILSTREAM *stream);
+void mail_dlog (char *string,long flag);
+long mail_match_lines (STRINGLIST *lines,STRINGLIST *msglines,long flags);
+unsigned long mail_filter (char *text,unsigned long len,STRINGLIST *lines,
+			   long flags);
+long mail_search_msg (MAILSTREAM *stream,unsigned long msgno,char *section,
+		      SEARCHPGM *pgm);
+long mail_search_header_text (char *s,STRINGLIST *st);
+long mail_search_header (SIZEDTEXT *hdr,STRINGLIST *st);
+long mail_search_text (MAILSTREAM *stream,unsigned long msgno,char *section,
+		       STRINGLIST *st,long flags);
+long mail_search_body (MAILSTREAM *stream,unsigned long msgno,BODY *body,
+		       char *prefix,unsigned long section,long flags);
+long mail_search_string (SIZEDTEXT *s,char *charset,STRINGLIST **st);
+long mail_search_string_work (SIZEDTEXT *s,STRINGLIST **st);
+long mail_search_keyword (MAILSTREAM *stream,MESSAGECACHE *elt,STRINGLIST *st,
+			  long flag);
+long mail_search_addr (ADDRESS *adr,STRINGLIST *st);
+char *mail_search_gets (readfn_t f,void *stream,unsigned long size,
+			GETS_DATA *md);
+SEARCHPGM *mail_criteria (char *criteria);
+int mail_criteria_date (unsigned short *date,char **r);
+int mail_criteria_string (STRINGLIST **s,char **r);
+unsigned short mail_shortdate (unsigned int year,unsigned int month,
+			       unsigned int day);
+SEARCHSET *mail_parse_set (char *s,char **ret);
+SEARCHSET *mail_append_set (SEARCHSET *set,unsigned long msgno);
+unsigned long *mail_sort (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
+			  SORTPGM *pgm,long flags);
+unsigned long *mail_sort_cache (MAILSTREAM *stream,SORTPGM *pgm,SORTCACHE **sc,
+				long flags);
+unsigned long *mail_sort_msgs (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
+			       SORTPGM *pgm,long flags);
+SORTCACHE **mail_sort_loadcache (MAILSTREAM *stream,SORTPGM *pgm);
+unsigned int mail_strip_subject (char *t,char **ret);
+char *mail_strip_subject_wsp (char *s);
+char *mail_strip_subject_blob (char *s);
+int mail_sort_compare (const void *a1,const void *a2);
+unsigned long mail_longdate (MESSAGECACHE *elt);
+THREADNODE *mail_thread (MAILSTREAM *stream,char *type,char *charset,
+			 SEARCHPGM *spg,long flags);
+THREADNODE *mail_thread_msgs (MAILSTREAM *stream,char *type,char *charset,
+			      SEARCHPGM *spg,long flags,sorter_t sorter);
+THREADNODE *mail_thread_orderedsubject (MAILSTREAM *stream,char *charset,
+					SEARCHPGM *spg,long flags,
+					sorter_t sorter);
+THREADNODE *mail_thread_references (MAILSTREAM *stream,char *charset,
+				    SEARCHPGM *spg,long flags,
+				    sorter_t sorter);
+void mail_thread_loadcache (MAILSTREAM *stream,unsigned long uid,OVERVIEW *ov,
+			    unsigned long msgno);
+char *mail_thread_parse_msgid (char *s,char **ss);
+STRINGLIST *mail_thread_parse_references (char *s,long flag);
+long mail_thread_check_child (container_t mother,container_t daughter);
+container_t mail_thread_prune_dummy (container_t msg,container_t ane);
+container_t mail_thread_prune_dummy_work (container_t msg,container_t ane);
+THREADNODE *mail_thread_c2node (MAILSTREAM *stream,container_t con,long flags);
+THREADNODE *mail_thread_sort (THREADNODE *thr,THREADNODE **tc);
+int mail_thread_compare_date (const void *a1,const void *a2);
+long mail_sequence (MAILSTREAM *stream,unsigned char *sequence);
+long mail_uid_sequence (MAILSTREAM *stream,unsigned char *sequence);
+long mail_parse_flags (MAILSTREAM *stream,char *flag,unsigned long *uf);
+long mail_usable_network_stream (MAILSTREAM *stream,char *name);
+
+MESSAGECACHE *mail_new_cache_elt (unsigned long msgno);
+ENVELOPE *mail_newenvelope (void);
+ADDRESS *mail_newaddr (void);
+BODY *mail_newbody (void);
+BODY *mail_initbody (BODY *body);
+PARAMETER *mail_newbody_parameter (void);
+PART *mail_newbody_part (void);
+MESSAGE *mail_newmsg (void);
+STRINGLIST *mail_newstringlist (void);
+SEARCHPGM *mail_newsearchpgm (void);
+SEARCHHEADER *mail_newsearchheader (char *line,char *text);
+SEARCHSET *mail_newsearchset (void);
+SEARCHOR *mail_newsearchor (void);
+SEARCHPGMLIST *mail_newsearchpgmlist (void);
+SORTPGM *mail_newsortpgm (void);
+THREADNODE *mail_newthreadnode (SORTCACHE *sc);
+ACLLIST *mail_newacllist (void);
+QUOTALIST *mail_newquotalist (void);
+void mail_free_body (BODY **body);
+void mail_free_body_data (BODY *body);
+void mail_free_body_parameter (PARAMETER **parameter);
+void mail_free_body_part (PART **part);
+void mail_free_cache (MAILSTREAM *stream);
+void mail_free_elt (MESSAGECACHE **elt);
+void mail_free_envelope (ENVELOPE **env);
+void mail_free_address (ADDRESS **address);
+void mail_free_stringlist (STRINGLIST **string);
+void mail_free_searchpgm (SEARCHPGM **pgm);
+void mail_free_searchheader (SEARCHHEADER **hdr);
+void mail_free_searchset (SEARCHSET **set);
+void mail_free_searchor (SEARCHOR **orl);
+void mail_free_searchpgmlist (SEARCHPGMLIST **pgl);
+void mail_free_namespace (NAMESPACE **n);
+void mail_free_sortpgm (SORTPGM **pgm);
+void mail_free_threadnode (THREADNODE **thr);
+void mail_free_acllist (ACLLIST **al);
+void mail_free_quotalist (QUOTALIST **ql);
+void auth_link (AUTHENTICATOR *auth);
+char *mail_auth (char *mechanism,authresponse_t resp,int argc,char *argv[]);
+AUTHENTICATOR *mail_lookup_auth (unsigned long i);
+unsigned int mail_lookup_auth_name (char *mechanism,long flags);
+
+NETSTREAM *net_open (NETMBX *mb,NETDRIVER *dv,unsigned long port,
+		     NETDRIVER *ssld,char *ssls,unsigned long sslp);
+NETSTREAM *net_open_work (NETDRIVER *dv,char *host,char *service,
+			  unsigned long port,unsigned long portoverride,
+			  unsigned long flags);
+NETSTREAM *net_aopen (NETDRIVER *dv,NETMBX *mb,char *service,char *usrbuf);
+char *net_getline (NETSTREAM *stream);
+				/* stream must be void* for use as readfn_t */
+long net_getbuffer (void *stream,unsigned long size,char *buffer);
+long net_soutr (NETSTREAM *stream,char *string);
+long net_sout (NETSTREAM *stream,char *string,unsigned long size);
+void net_close (NETSTREAM *stream);
+char *net_host (NETSTREAM *stream);
+char *net_remotehost (NETSTREAM *stream);
+unsigned long net_port (NETSTREAM *stream);
+char *net_localhost (NETSTREAM *stream);
+
+long sm_subscribe (char *mailbox);
+long sm_unsubscribe (char *mailbox);
+char *sm_read (void **sdb);
+
+void ssl_onceonlyinit (void);
+char *ssl_start_tls (char *s);
+void ssl_server_init (char *server);
+
+
+/* Server I/O functions */
+
+int PBIN (void);
+char *PSIN (char *s,int n);
+long PSINR (char *s,unsigned long n);
+int PBOUT (int c);
+long INWAIT (long seconds);
+int PSOUT (char *s);
+int PSOUTR (SIZEDTEXT *s);
+int PFLUSH (void);