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/* ========================================================================
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* Copyright 1988-2006 University of Washington
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* ========================================================================
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* Program: Unix compatibility routines
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* Author: Mark Crispin
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* Networks and Distributed Computing
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* Computing & Communications
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* University of Washington
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* Administration Building, AG-44
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* Internet: MRC@CAC.Washington.EDU
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* Date: 14 September 1996
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* Last Edited: 30 August 2006
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* This file is dedicated to my dog, Unix, also known as Yun-chan and
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* Unix J. Terwilliker Jehosophat Aloysius Monstrosity Animal Beast. Unix
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* passed away at the age of 11 1/2 on September 14, 1996, 12:18 PM PDT, after
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* a two-month bout with cirrhosis of the liver.
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* He was a dear friend, and I miss him terribly.
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* Lift a leg, Yunie. Luv ya forever!!!!
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/* Emulator for BSD flock() call
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* Accepts: file descriptor
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* Returns: 0 if successful, -1 if failure
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/* Our friends in Redmond have decided that you can not write to any segment
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* which has a shared lock. This screws up the shared-write mailbox drivers
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* (mbx, mtx, and tenex). As a workaround, we'll only lock the first byte of
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* the file, meaning that you can't write that byte shared.
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* This behavior seems to be new as of NT 4.0.
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int flock (int fd,int op)
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HANDLE hdl = (HANDLE) _get_osfhandle (fd);
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DWORD flags = (op & LOCK_NB) ? LOCKFILE_FAIL_IMMEDIATELY : 0;
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OVERLAPPED offset = {NIL,NIL,0,0,NIL};
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blocknotify_t bn = (blocknotify_t)
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((op & LOCK_NB) ? NIL : mail_parameters (NIL,GET_BLOCKNOTIFY,NIL));
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if (hdl < 0) errno = EBADF; /* error in file descriptor */
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else switch (op & ~LOCK_NB) { /* translate to LockFileEx() op */
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case LOCK_EX: /* exclusive */
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flags |= LOCKFILE_EXCLUSIVE_LOCK;
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case LOCK_SH: /* shared */
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if (!check_nt ()) return 0; /* always succeeds if not NT */
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if (bn) (*bn) (BLOCK_FILELOCK,NIL);
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/* bug for bug compatible with Unix */
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UnlockFileEx (hdl,NIL,1,0,&offset);
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/* lock the file as requested */
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if (LockFileEx (hdl,flags,NIL,1,0,&offset)) ret = 0;
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if (bn) (*bn) (BLOCK_NONE,NIL);
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if (ret) errno = (op & LOCK_NB) ? EAGAIN : EBADF;
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case LOCK_UN: /* unlock */
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if (check_nt ()) UnlockFileEx (hdl,NIL,1,0,&offset);
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ret = 0; /* always succeeds */
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default: /* default */
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errno = EINVAL; /* bad call */
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static char *loghdr; /* log file header string */
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static HANDLE loghdl = NIL; /* handle of event source */
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/* Emulator for BSD syslog() routine
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void syslog (int priority,const char *message,...)
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char tmp[MAILTMPLEN]; /* callers must be careful not to pop this */
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unsigned short etype;
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if (!check_nt ()) return; /* no-op on non-NT system */
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/* default event source */
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if (!loghdl) openlog ("c-client",LOG_PID,LOG_MAIL);
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switch (priority) { /* translate UNIX type into NT type */
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etype = EVENTLOG_ERROR_TYPE;
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etype = EVENTLOG_INFORMATION_TYPE;
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etype = EVENTLOG_WARNING_TYPE;
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va_start (args,message); /* initialize vararg mechanism */
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vsprintf (tmp,message,args); /* build message */
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strs[0] = loghdr; /* write header */
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strs[1] = tmp; /* then the message */
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/* report the event */
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ReportEvent (loghdl,etype,(unsigned short) priority,2000,NIL,2,0,strs,NIL);
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/* Emulator for BSD openlog() routine
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void openlog (const char *ident,int logopt,int facility)
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char tmp[MAILTMPLEN];
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if (!check_nt ()) return; /* no-op on non-NT system */
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if (loghdl) fatal ("Duplicate openlog()!");
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loghdl = RegisterEventSource (NIL,ident);
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sprintf (tmp,(logopt & LOG_PID) ? "%s[%d]" : "%s",ident,getpid ());
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loghdr = cpystr (tmp); /* save header for later */
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/* Copy Unix string with CRLF newlines
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* Accepts: destination string
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* pointer to size of destination string buffer
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* length of source string
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* Returns: length of copied string
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unsigned long unix_crlfcpy (char **dst,unsigned long *dstl,char *src,
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/* count number of LF's in source string(s) */
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for (i = srcl,j = 0; j < srcl; j++) if (*d++ == '\012') i++;
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/* flush destination buffer if too small */
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if (*dst && (i > *dstl)) fs_give ((void **) dst);
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if (!*dst) { /* make a new buffer if needed */
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*dst = (char *) fs_get ((*dstl = i) + 1);
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if (dstl) *dstl = i; /* return new buffer length to main program */
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d = *dst; /* destination string */
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/* copy strings, inserting CR's before LF's */
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while (srcl--) switch (*src) {
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case '\015': /* unlikely carriage return */
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*d++ = *src++; /* copy it and any succeeding linefeed */
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if (srcl && *src == '\012') {
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case '\012': /* line feed? */
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*d++ ='\015'; /* yes, prepend a CR, drop into default case */
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default: /* ordinary chararacter */
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*d++ = *src++; /* just copy character */
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*d = '\0'; /* tie off destination */
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return d - *dst; /* return length */
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/* Length of Unix string after unix_crlfcpy applied
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* Accepts: source string
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* Returns: length of string
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unsigned long unix_crlflen (STRING *s)
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unsigned long pos = GETPOS (s);
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unsigned long i = SIZE (s);
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while (j--) switch (SNX (s)) {/* search for newlines */
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case '\015': /* unlikely carriage return */
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if (j && (CHR (s) == '\012')) {
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SNX (s); /* eat the line feed */
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case '\012': /* line feed? */
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default: /* ordinary chararacter */
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SETPOS (s,pos); /* restore old position */
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/* Undoubtably, I'm going to regret these two routines in the future. I
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* regret them now. Their purpose is to work around two problems in the
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* VC++ 6.0 C library:
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* (1) tmpfile() creates the file in the current directory instead of a
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* temporary directory
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* (2) tmpfile() and fclose() think that on NT systems, it works to unlink
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* the file while it's still open, so there's no need for the _tmpfname
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* hook at fclose(). Unfortunately, that doesn't work in Win2K.
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* I would be delighted to have a better alternative.
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#undef fclose /* use the real fclose() in close_file() */
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/* Substitute for Microsoft's tmpfile() that uses the real temporary directory
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* Returns: FILE structure if success, NIL if failure
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FILE *create_tempfile (void)
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char *s = _tempnam (getenv ("TEMP"),"msg");
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if (s) { /* if got temporary name... */
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/* open file, and stash name on _tmpfname */
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if (ret = fopen (s,"w+b")) ret->_tmpfname = s;
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else fs_give ((void **) &s);/* flush temporary string */
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/* Substitute for Microsoft's fclose() that always flushes _tmpfname
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* Returns: FILE structure if success, NIL if failure
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int close_file (FILE *stream)
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char *s = stream->_tmpfname;
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stream->_tmpfname = NIL; /* just in case fclose() tries to delete it */
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ret = fclose (stream); /* close the file */
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if (s) { /* was there a _tmpfname? */
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unlink (s); /* yup, delete it */
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fs_give ((void **) &s); /* and flush the name */
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/* Get password from console
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#define PWDLEN 128 /* used by Linux */
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char *getpass (const char *prompt)
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static char pwd[PWDLEN];
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fputs (prompt,stderr); /* output prompt */
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for (i = done = 0; !done; ) switch (ch = _getch()) {
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case 0x03: /* CTRL/C stops program */
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case '\b': /* BACKSPACE erase previous character */
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if (i) pwd[--i] = '\0';
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case '\n': case '\r': /* CR or LF terminates string */
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default: /* any other character is a pwd char */
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if (i < (PWDLEN - 1)) pwd[i++] = ch;
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pwd[i] = '\0'; /* tie off string with null */
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putchar ('\n'); /* echo newline */
added
removed
imap/src/osdep/nt/yunchan.c
