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ðŸ“„ c-client.h(1.65 KB)
ðŸ“„ dummy.h(1.49 KB)
ðŸ“„ env.h(1.47 KB)
ðŸ“„ env_unix.h(2.86 KB)
ðŸ“„ fdstring.h(1.05 KB)
ðŸ“„ flockcyg.h(1.34 KB)
ðŸ“„ flocksim.h(4.29 KB)
ðŸ“„ flstring.h(799 B)
ðŸ“„ fs.h(905 B)
ðŸ“„ ftl.h(825 B)
ðŸ“„ imap4r1.h(8.01 KB)
ðŸ“„ linkage.c(1.2 KB)
ðŸ“„ linkage.h(541 B)
ðŸ“„ mail.h(66.8 KB)
ðŸ“„ misc.h(3.27 KB)
ðŸ“„ netmsg.h(987 B)
ðŸ“„ newsrc.h(1.45 KB)
ðŸ“„ nl.h(939 B)
ðŸ“„ nntp.h(1.58 KB)
ðŸ“„ os_a32.h(1.2 KB)
ðŸ“„ os_a41.h(1.2 KB)
ðŸ“„ os_a52.h(1.27 KB)
ðŸ“„ os_aix.h(1.1 KB)
ðŸ“„ os_aos.h(1.26 KB)
ðŸ“„ os_art.h(2.01 KB)
ðŸ“„ os_asv.h(1.91 KB)
ðŸ“„ os_aux.h(1.18 KB)
ðŸ“„ os_bsd.h(1.33 KB)
ðŸ“„ os_bsf.h(1.05 KB)
ðŸ“„ os_bsi.h(1.03 KB)
ðŸ“„ os_cvx.h(1.09 KB)
ðŸ“„ os_cyg.h(1.6 KB)
ðŸ“„ os_d-g.h(1.35 KB)
ðŸ“„ os_do4.h(1.23 KB)
ðŸ“„ os_drs.h(1.42 KB)
ðŸ“„ os_dyn.h(1.5 KB)
ðŸ“„ os_hpp.h(1.36 KB)
ðŸ“„ os_isc.h(1.68 KB)
ðŸ“„ os_lnx.h(1.45 KB)
ðŸ“„ os_lyn.h(1.03 KB)
ðŸ“„ os_mct.h(1.05 KB)
ðŸ“„ os_mnt.h(1.18 KB)
ðŸ“„ os_nto.h(1.64 KB)
ðŸ“„ os_nxt.h(1.18 KB)
ðŸ“„ os_os4.h(1.17 KB)
ðŸ“„ os_osf.h(1.17 KB)
ðŸ“„ os_osx.h(1.26 KB)
ðŸ“„ os_ptx.h(1.7 KB)
ðŸ“„ os_pyr.h(1.42 KB)
ðŸ“„ os_qnx.h(1.42 KB)
ðŸ“„ os_s40.h(957 B)
ðŸ“„ os_sc5.h(1.72 KB)
ðŸ“„ os_sco.h(1.76 KB)
ðŸ“„ os_sgi.h(1.36 KB)
ðŸ“„ os_shp.h(1.36 KB)
ðŸ“„ os_slx.h(1.45 KB)
ðŸ“„ os_soln.h(1.93 KB)
ðŸ“„ os_solo.h(1.9 KB)
ðŸ“„ os_sos.h(1.17 KB)
ðŸ“„ os_sua.h(1.16 KB)
ðŸ“„ os_sun.h(1.28 KB)
ðŸ“„ os_sv2.h(2.91 KB)
ðŸ“„ os_sv4.h(1.79 KB)
ðŸ“„ os_ult.h(1.01 KB)
ðŸ“„ os_vu2.h(2.34 KB)
ðŸ“„ osdep.h(1.45 KB)
ðŸ“„ pseudo.h(838 B)
ðŸ“„ rfc822.h(5.29 KB)
ðŸ“„ shortsym.h(17.65 KB)
ðŸ“„ smtp.h(2.48 KB)
ðŸ“„ sslio.h(2.25 KB)
ðŸ“„ tcp.h(1.73 KB)
ðŸ“„ tcp_unix.h(1.2 KB)
ðŸ“„ unix.h(6.55 KB)
ðŸ“„ utf8.h(22.43 KB)
ðŸ“„ utf8aux.h(1.49 KB)

Editing: unix.h

/* ========================================================================
 * 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:	UNIX mail 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:	20 December 1989
 * Last Edited:	30 August 2006
 */

/*				DEDICATION
 *
 *  This file is dedicated to my dog, Unix, also known as Yun-chan and
 * Unix J. Terwilliker Jehosophat Aloysius Monstrosity Animal Beast.  Unix
 * passed away at the age of 11 1/2 on September 14, 1996, 12:18 PM PDT, after
 * a two-month bout with cirrhosis of the liver.
 *
 *  He was a dear friend, and I miss him terribly.
 *
 *  Lift a leg, Yunie.  Luv ya forever!!!!
 */

/* Validate line
 * Accepts: pointer to candidate string to validate as a From header
 *	    return pointer to end of date/time field
 *	    return pointer to offset from t of time (hours of ``mmm dd hh:mm'')
 *	    return pointer to offset from t of time zone (if non-zero)
 * Returns: t,ti,zn set if valid From string, else ti is NIL
 */

#define VALID(s,x,ti,zn) {						\
  ti = 0;								\
  if ((*s == 'F') && (s[1] == 'r') && (s[2] == 'o') && (s[3] == 'm') &&	\
      (s[4] == ' ')) {							\
    for (x = s + 5; *x && *x != '\012'; x++);				\
    if (*x) {								\
      if (x[-1] == '\015') --x;						\
      if (x - s >= 41) {						\
	for (zn = -1; x[zn] != ' '; zn--);				\
	if ((x[zn-1] == 'm') && (x[zn-2] == 'o') && (x[zn-3] == 'r') &&	\
	    (x[zn-4] == 'f') && (x[zn-5] == ' ') && (x[zn-6] == 'e') &&	\
	    (x[zn-7] == 't') && (x[zn-8] == 'o') && (x[zn-9] == 'm') &&	\
	    (x[zn-10] == 'e') && (x[zn-11] == 'r') && (x[zn-12] == ' '))\
	  x += zn - 12;							\
      }									\
      if (x - s >= 27) {						\
	if (x[-5] == ' ') {						\
	  if (x[-8] == ':') zn = 0,ti = -5;				\
	  else if (x[-9] == ' ') ti = zn = -9;				\
	  else if ((x[-11] == ' ') && ((x[-10]=='+') || (x[-10]=='-')))	\
	    ti = zn = -11;						\
	}								\
	else if (x[-4] == ' ') {					\
	  if (x[-9] == ' ') zn = -4,ti = -9;				\
	}								\
	else if (x[-6] == ' ') {					\
	  if ((x[-11] == ' ') && ((x[-5] == '+') || (x[-5] == '-')))	\
	    zn = -6,ti = -11;						\
	}								\
	if (ti && !((x[ti - 3] == ':') &&				\
		    (x[ti -= ((x[ti - 6] == ':') ? 9 : 6)] == ' ') &&	\
		    (x[ti - 3] == ' ') && (x[ti - 7] == ' ') &&		\
		    (x[ti - 11] == ' '))) ti = 0;			\
      }									\
    }									\
  }									\
}

/* You are not expected to understand this macro, but read the next page if
 * you are not faint of heart.
 *
 * Known formats to the VALID macro are:
 *		From user Wed Dec  2 05:53 1992
 * BSD		From user Wed Dec  2 05:53:22 1992
 * SysV		From user Wed Dec  2 05:53 PST 1992
 * rn		From user Wed Dec  2 05:53:22 PST 1992
 *		From user Wed Dec  2 05:53 -0700 1992
 * emacs	From user Wed Dec  2 05:53:22 -0700 1992
 *		From user Wed Dec  2 05:53 1992 PST
 *		From user Wed Dec  2 05:53:22 1992 PST
 *		From user Wed Dec  2 05:53 1992 -0700
 * Solaris	From user Wed Dec  2 05:53:22 1992 -0700
 *
 * Plus all of the above with `` remote from xxx'' after it. Thank you very
 * much, smail and Solaris, for making my life considerably more complicated.
 */

/*
 * What?  You want to understand the VALID macro anyway?  Alright, since you
 * insist.  Actually, it isn't really all that difficult, provided that you
 * take it step by step.
 *
 * Line 1	Initializes the return ti value to failure (0);
 * Lines 2-3	Validates that the 1st-5th characters are ``From ''.
 * Lines 4-6	Validates that there is an end of line and points x at it.
 * Lines 7-14	First checks to see if the line is at least 41 characters long.
 *		If so, it scans backwards to find the rightmost space.  From
 *		that point, it scans backwards to see if the string matches
 *		`` remote from''.  If so, it sets x to point to the space at
 *		the start of the string.
 * Line 15	Makes sure that there are at least 27 characters in the line.
 * Lines 16-21	Checks if the date/time ends with the year (there is a space
 *		five characters back).  If there is a colon three characters
 *		further back, there is no timezone field, so zn is set to 0
 *		and ti is set in front of the year.  Otherwise, there must
 *		either to be a space four characters back for a three-letter
 *		timezone, or a space six characters back followed by a + or -
 *		for a numeric timezone; in either case, zn and ti become the
 *		offset of the space immediately before it.
 * Lines 22-24	Are the failure case for line 14.  If there is a space four
 *		characters back, it is a three-letter timezone; there must be a
 *		space for the year nine characters back.  zn is the zone
 *		offset; ti is the offset of the space.
 * Lines 25-28	Are the failure case for line 20.  If there is a space six
 *		characters back, it is a numeric timezone; there must be a
 *		space eleven characters back and a + or - five characters back.
 *		zn is the zone offset; ti is the offset of the space.
 * Line 29-32	If ti is valid, make sure that the string before ti is of the
 *		form www mmm dd hh:mm or www mmm dd hh:mm:ss, otherwise
 *		invalidate ti.  There must be a colon three characters back
 *		and a space six or nine	characters back (depending upon
 *		whether or not the character six characters back is a colon).
 *		There must be a space three characters further back (in front
 *		of the day), one seven characters back (in front of the month),
 *		and one eleven characters back (in front of the day of week).
 *		ti is set to be the offset of the space before the time.
 *
 * Why a macro?  It gets invoked a *lot* in a tight loop.  On some of the
 * newer pipelined machines it is faster being open-coded than it would be if
 * subroutines are called.
 *
 * Why does it scan backwards from the end of the line, instead of doing the
 * much easier forward scan?  There is no deterministic way to parse the
 * ``user'' field, because it may contain unquoted spaces!  Yes, I tested it to
 * see if unquoted spaces were possible.  They are, and I've encountered enough
 * evil mail to be totally unwilling to trust that ``it will never happen''.
 */

/* Build parameters */

#define KODRETRY 15		/* kiss-of-death retry in seconds */
#define LOCKTIMEOUT 5		/* lock timeout in minutes */

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Editing: unix.h

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