/*
?*??sha.cpp
?*
?*??Copyright?（C）?1998?2009
?*??Paul?E.?Jones?
?*??All?Rights?Reserved
?*
?*****************************************************************************
?*??$Id:?sha.c?12?2009-06-22?19:34:25Z?paulej?$
?*****************************************************************************
?*
?*??Description:
?*??????This?utility?will?display?the?message?digest?（fingerprint）?for
?*??????the?specified?file（s）.
?*
?*??Portability?Issues:
?*??????None.
?*/

#include?
#include?
#ifdef?WIN32
#include?
#endif
#include?
#include?“sha1.h“

/*
?*??Function?prototype
?*/
void?usage（）;


/*??
?*??main
?*
?*??Description:
?*??????This?is?the?entry?point?for?the?program
?*
?*??Parameters:
?*??????argc:?[in]
?*??????????This?is?the?count?of?arguments?in?the?argv?array
?*??????argv:?[in]
?*??????????This?is?an?array?of?filenames?for?which?to?compute?message
?*??????????digests
?*
?*??Returns:
?*??????Nothing.
?*
?*??Comments:
?*
?*/
int?main（int?argc?char?*argv[]）
{
????SHA1Context?sha;????????????????/*?SHA-1?context?????????????????*/
????FILE????????*fp;????????????????/*?File?pointer?for?reading?files*/
????char????????c;??????????????????/*?Character?read?from?file??????*/
????int?????????i;??????????????????/*?Counter???????????????????????*/
????int?????????reading_stdin;??????/*?Are?we?reading?standard?in????*/
????int?????????read_stdin?=?0;?????/*?Have?we?read?stdin????????????*/

????/*
?????*??Check?the?program?arguments?and?print?usage?information?if?-?
?????*??or?--help?is?passed?as?the?first?argument.
?????*/
????if?（argc?>?1?&&?（!strcmp（argv[1]“-?“）?||
????????!strcmp（argv[1]“--help“）））
????{
????????usage（）;
????????return?1;
????}

????/*
?????*??For?each?filename?passed?in?on?the?command?line?calculate?the
?????*??SHA-1?value?and?display?it.
?????*/
????for（i?=?0;?i?????{
????????/*
?????????*??We?start?the?counter?at?0?to?guarantee?entry?into?the?for
?????????*??loop.?So?if?‘i‘?is?zero?we?will?increment?it?now.??If?there
?????????*??is?no?argv[1]?we?will?use?STDIN?below.
?????????*/
????????if?（i?==?0）
????????{
????????????i++;
????????}

????????if?（argc?==?1?||?!strcmp（argv[i]“-“））
????????{
#ifdef?WIN32
????????????setmode（fileno（stdin）?_O_BINARY）;
#endif
????????????fp?=?stdin;
????????????reading_stdin?=?1;
????????}
????????else
????????{
????????????if?（!（fp?=?fopen（argv[i]“rb“）））
????????????{
????????????????fprintf（stderr
????????????????????????“sha:?unable?to?open?file?%s\n“
????????????????????????argv[i]）;
????????????????return?2;
????????????}
????????????reading_stdin?=?0;
????????}

????????/*
?????????*??We?do?not?want?to?read?STDIN?multiple?times
?????????*/
????????if?（reading_stdin）
????????{
????????????if?（read_stdin）
????????????{
????????????????continue;
????????????}

????????????read_stdin?=?1;
????????}

????????/*
?????????*??Reset?the?SHA-1?context?and?process?input
?????????*/
????????SHA1Reset（&sha）;

????????c?=?fgetc（

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????4176??2009-06-23?04:21??sha1-c\sha.c
?????文件???????10382??2009-06-23?04:21??sha1-c\sha1.c
?????文件????????1574??2009-06-23?04:21??sha1-c\sha1.h
?????文件????????2513??2009-06-23?04:21??sha1-c\shatest.c
?????目錄???????????0??2009-06-23?04:24??sha1-c\
?????文件?????????702??2009-06-23?04:33??sha1-c\license.txt