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diff --git a/imap/src/osdep/os2/env_os2.c b/imap/src/osdep/os2/env_os2.c
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+/* ========================================================================
+ * Copyright 1988-2006 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: OS/2 environment routines
+ *
+ * Author: Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * Administration Building, AG-44
+ * Seattle, WA 98195
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 1 August 1988
+ * Last Edited: 30 August 2006
+ */
+
+
+static char *myLocalHost = NIL; /* local host name */
+static char *myHomeDir = NIL; /* home directory name */
+static char *myNewsrc = NIL; /* newsrc file name */
+static short no822tztext = NIL; /* disable RFC [2]822 timezone text */
+
+#include "write.c" /* include safe writing routines */
+#include "pmatch.c" /* include wildcard pattern matcher */
+
+
+/* Get all authenticators */
+
+#include "auths.c"
+
+/* Environment manipulate parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *env_parameters (long function,void *value)
+{
+ void *ret = NIL;
+ switch ((int) function) {
+ case SET_HOMEDIR:
+ myHomeDir = cpystr ((char *) value);
+ case GET_HOMEDIR:
+ ret = (void *) myHomeDir;
+ break;
+ case SET_LOCALHOST:
+ myLocalHost = cpystr ((char *) value);
+ case GET_LOCALHOST:
+ ret = (void *) myLocalHost;
+ break;
+ case SET_NEWSRC:
+ if (myNewsrc) fs_give ((void **) &myNewsrc);
+ myNewsrc = cpystr ((char *) value);
+ case GET_NEWSRC:
+ if (!myNewsrc) { /* set news file name if not defined */
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"%s\\newsrc",myhomedir ());
+ myNewsrc = cpystr (tmp);
+ }
+ ret = (void *) myNewsrc;
+ break;
+ case SET_DISABLE822TZTEXT:
+ no822tztext = value ? T : NIL;
+ case GET_DISABLE822TZTEXT:
+ ret = (void *) (no822tztext ? VOIDT : NIL);
+ break;
+ }
+ return ret;
+}
+
+/* Write current time
+ * Accepts: destination string
+ * optional format of day-of-week prefix
+ * format of date and time
+ * flag whether to append symbolic timezone
+ */
+
+static void do_date (char *date,char *prefix,char *fmt,int suffix)
+{
+ time_t tn = time (0);
+ struct tm *t = gmtime (&tn);
+ int zone = t->tm_hour * 60 + t->tm_min;
+ int julian = t->tm_yday;
+ t = localtime (&tn); /* get local time now */
+ /* minus UTC minutes since midnight */
+ zone = t->tm_hour * 60 + t->tm_min - zone;
+ /* julian can be one of:
+ * 36x local time is December 31, UTC is January 1, offset -24 hours
+ * 1 local time is 1 day ahead of UTC, offset +24 hours
+ * 0 local time is same day as UTC, no offset
+ * -1 local time is 1 day behind UTC, offset -24 hours
+ * -36x local time is January 1, UTC is December 31, offset +24 hours
+ */
+ if (julian = t->tm_yday -julian)
+ zone += ((julian < 0) == (abs (julian) == 1)) ? -24*60 : 24*60;
+ if (prefix) { /* want day of week? */
+ sprintf (date,prefix,days[t->tm_wday]);
+ date += strlen (date); /* make next sprintf append */
+ }
+ /* output the date */
+ sprintf (date,fmt,t->tm_mday,months[t->tm_mon],t->tm_year+1900,
+ t->tm_hour,t->tm_min,t->tm_sec,zone/60,abs (zone) % 60);
+ if (suffix) { /* append timezone suffix if desired */
+ char *tz;
+ tzset (); /* get timezone from TZ environment stuff */
+ tz = tzname[daylight ? (((struct tm *) t)->tm_isdst > 0) : 0];
+ if (tz && tz[0]) {
+ char *s;
+ for (s = tz; *s; s++) if (*s & 0x80) return;
+ sprintf (date + strlen (date)," (%.50s)",tz);
+ }
+ }
+}
+
+
+/* Write current time in RFC 822 format
+ * Accepts: destination string
+ */
+
+void rfc822_date (char *date)
+{
+ do_date (date,"%s, ","%d %s %d %02d:%02d:%02d %+03d%02d",
+ no822tztext ? NIL : T);
+}
+
+
+/* Write current time in fixed-width RFC 822 format
+ * Accepts: destination string
+ */
+
+void rfc822_fixed_date (char *date)
+{
+ do_date (date,NIL,"%02d %s %4d %02d:%02d:%02d %+03d%02d",NIL);
+}
+
+
+/* Write current time in internal format
+ * Accepts: destination string
+ */
+
+void internal_date (char *date)
+{
+ do_date (date,NIL,"%02d-%s-%d %02d:%02d:%02d %+03d%02d",NIL);
+}
+
+/* Return my home directory name
+ * Returns: my home directory name
+ */
+
+char *myhomedir ()
+{
+ if (!myHomeDir) { /* get home directory name if not yet known */
+ char *s;
+ if ((s = getenv ("PINEHOME")) || (s = getenv ("HOME")) ||
+ (s = getenv ("ETC"))) {
+ myHomeDir = cpystr (s);
+ while (s = strchr (myHomeDir,'/')) *s = '\\';
+ if ((s = strrchr (myHomeDir,'\\')) && !s[1]) *s = '\0';
+ }
+ else myHomeDir = cpystr ("");
+ }
+ return myHomeDir;
+}
+
+
+/* Return mailbox file name
+ * Accepts: destination buffer
+ * mailbox name
+ * Returns: file name
+ */
+
+char *mailboxfile (char *dst,char *name)
+{
+ char *s;
+ char *ext = (char *) mail_parameters (NIL,GET_EXTENSION,NIL);
+ /* forbid extraneous extensions */
+ if ((s = strchr ((s = strrchr (name,'\\')) ? s : name,'.')) &&
+ ((ext = (char *) mail_parameters (NIL,GET_EXTENSION,NIL)) ||
+ strchr (s+1,'.'))) return NIL;
+ /* absolute path name? */
+ if ((*name == '\\') || (name[1] == ':')) strcpy (dst,name);
+ else sprintf (dst,"%s\\%s",myhomedir (),name);
+ if (ext) sprintf (dst + strlen (dst),".%s",ext);
+ return dst;
+}
+
+/* Lock file name
+ * Accepts: return buffer for file name
+ * file name
+ * locking to be placed on file if non-NIL
+ * Returns: file descriptor of lock or -1 if error
+ */
+
+int lockname (char *lock,char *fname,int op)
+{
+ int ld;
+ char c,*s;
+ if (!((s = lockdir (lock,getenv ("TEMP"),NIL)) ||
+ (s = lockdir (lock,getenv ("TMP"),NIL)) ||
+ (s = lockdir (lock,getenv ("TMPDIR"),NIL)) ||
+ /* C:\TEMP is last resort */
+ (s = lockdir (lock,defaultDrive (),"TEMP")))) {
+ mm_log ("Unable to find temporary directory",ERROR);
+ return -1;
+ }
+ /* generate file name */
+ while (c = *fname++) switch (c) {
+ case '/': case '\\': case ':':
+ *s++ = '!'; /* convert bad chars to ! */
+ break;
+ default:
+ *s++ = c;
+ break;
+ }
+ *s++ = c; /* tie off name */
+ /* get the lock */
+ if (((ld = open (lock,O_BINARY|O_RDWR|O_CREAT,S_IREAD|S_IWRITE)) >= 0) && op)
+ flock (ld,op); /* apply locking function */
+ return ld; /* return locking file descriptor */
+}
+
+/* Build lock directory, check to see if it exists
+ * Accepts: return buffer for lock directory
+ * first part of possible name
+ * optional second part
+ * Returns: pointer to end of buffer if buffer has a good name, else NIL
+ */
+
+char *lockdir (char *lock,char *first,char *last)
+{
+ struct stat sbuf;
+ char c,*s;
+ if (first && *first) { /* first part must be non-NIL */
+ /* copy first part */
+ for (s = lock; *first; c = *s++ = *first++);
+ if (last && *last) { /* copy last part if specified */
+ /* write trailing \ in case not in first */
+ if (c != '\\') *s++ = '\\';
+ while (*last) c = *s++ = *last++;
+ }
+ if (c == '\\') --s; /* delete trailing \ if any */
+ *s = '\0'; /* tie off name at this point */
+ return stat (lock,&sbuf) ? NIL : s;
+ }
+ return NIL; /* failed */
+}
+
+
+/* Unlock file descriptor
+ * Accepts: file descriptor
+ * lock file name from lockfd()
+ */
+
+void unlockfd (int fd,char *lock)
+{
+ flock (fd,LOCK_UN); /* unlock it */
+ close (fd); /* close it */
+}
+
+
+/* Determine default prototype stream to user
+ * Accepts: type (NIL for create, T for append)
+ * Returns: default prototype stream
+ */
+
+MAILSTREAM *default_proto (long type)
+{
+ extern MAILSTREAM DEFAULTPROTO;
+ return &DEFAULTPROTO; /* return default driver's prototype */
+}
+
+/* Global data */
+
+static unsigned rndm = 0; /* initial `random' number */
+
+
+/* Return random number
+ */
+
+long random ()
+{
+ if (!rndm) srand (rndm = (unsigned) time (0L));
+ return (long) rand ();
+}
+
+
+/* Emulator for BSD syslog() routine
+ * Accepts: priority
+ * message
+ * parameters
+ */
+
+void syslog (int priority,const char *message,...)
+{
+}
+
+
+/* Emulator for BSD openlog() routine
+ * Accepts: identity
+ * options
+ * facility
+ */
+
+void openlog (const char *ident,int logopt,int facility)
+{
+}
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