cgiWord格式.docx
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HEAD>
TITLE>
%s<
/TITLE>
/HEAD>
"
title）;
voidhtmlBody（）{
BODY>
voidhtmlFooter（）{
/BODY>
/HTML>
voidaddTitleElement（char*title）{
H1>
/H1>
title）;
/*cgivars.c
*（C）Copyright2000,MoretonBay（）.
*seeHTTP（www.w3.org）andRFC
*/
stdlib.h>
signal.h>
errno.h>
unistd.h>
sys/stat.h>
sys/time.h>
sys/wait.h>
staticvoid
catchchild（）
{
charbuf[40];
pid_tpid;
intstatus;
/*signal（SIGCHLD,catchchild）;
*//*Unneeded*/
pid=wait4（-1,&
status,WUNTRACED,0）;
if（WIFSTOPPED（status））
sprintf（buf,"
sh%d:
Child%dstopped\n"
getpid（）,pid）;
else
Child%ddied\n"
//if（intcrlf）
//write（STDOUT,"
\n"
1）;
write（STDOUT,buf,strlen（buf））;
setenv（"
NIOSSHELL"
buf,1）;
intexecfile（cmd,bg,fplog）
char*cmd;
intbg;
FILE*fplog;
intpid;
char*myargv[MAXARGS];
structsigactionact;
intj=0;
//myargv[j++]=strtok（"
/bin/nios2iowd80681070127"
"
"
myargv[j++]=strtok（cmd,"
while（j<
MAXARGS&
&
（myargv[j++]=strtok（NULL,"
））!
=NULL）;
if（bg==0）
signal（SIGCHLD,SIG_DFL）;
/*
*Nomagiccharactersintheexpandedcommand,sodotheforkand
*execourself.IfthisfailswithENOEXEC,thenrunthe
*shellanywaysinceitmightbeashellscript.
if（!
（pid=vfork（）））{
intci;
/*
*Wearethechild,soruntheprogram.
*Firstcloseanyextrafiledescriptorswehaveopened.
*besurenottomodifyanyglobalsafterthevfork!
*/
signal（SIGINT,SIG_DFL）;
signal（SIGQUIT,SIG_DFL）;
execvp（myargv[0],myargv）;
printf（"
%s:
%s\n"
myargv[0],（errno==ENOENT）?
Badcommandorfilename"
:
strerror（errno））;
fprintf（fplog,"
_exit（0）;
if（pid<
0）{
memset（&
act,0,sizeof（act））;
act.sa_handler=catchchild;
act.sa_flags=SA_RESTART;
sigaction（SIGCHLD,&
act,NULL）;
perror（"
vforkfailed"
fprintf（fplog,"
vforkfailed\n"
return;
if（bg!
=0）{
[%d]\n"
pid）;
fprintf（fplog,"
return;
perror（myargv[0]）;
%s\n"
myargv[0]）;
exit
（1）;
/*localfunctionprototypes*/
charhex2char（char*hex）;
voidunescape_url（char*url）;
charx2c（char*what）;
voidWriteNios（unsignedlongaddr,unsignedlongvalue）;
unsignedlongReadNios（unsignedlongaddr）;
voidnios2command（char*command）;
/*hex2char*/
/*RFC*/
charhex2char（char*hex）{
charchar_value;
char_value=（hex[0]>
='
A'
?
（（hex[0]&
0xdf）-'
）+10:
（hex[0]-'
0'
））;
char_value*=16;
char_value+=（hex[1]>
（（hex[1]&
（hex[1]-'
returnchar_value;
/*unescape_url*/
voidunescape_url（char*url）{
intn,k;
for（n=0,k=0;
url[k];
++n,++k）{
if（（url[n]=url[k]）=='
%'
）{
url[n]=hex2char（&
url[k+1]）;
k+=2;
}
url[n]='
\0'
;
/*getRequestMethod
*retn:
from_method（GETorPOST）onsuccess,
*-1onfailure.*/
intgetRequestMethod（）{
char*request_method;
request_method=getenv（"
REQUEST_METHOD"
if（request_method==NULL）
return-1;
strcmp（request_method,"
GET"
）||!
HEAD"
））{
form_method=GET;
}elseif（!
POST"
））{
form_method=POST;
}else{
/*wtfwasitthen?
!
returnform_method;
/*getGETvars
getvars*/
char**getGETvars（）{
inti;
char**getvars;
char*getinput;
char**pairlist;
intpaircount=0;
char*nvpair;
char*eqpos;
getinput=getenv（"
QUERY_STRING"
if（getinput）
getinput=strdup（getinput）;
/*Changeallplussesbacktospaces*/
for（i=0;
getinput&
getinput[i];
i++）
if（getinput[i]=='
+'
）
getinput[i]='
'
pairlist=（char**）malloc（256*sizeof（char**））;
paircount=0;
nvpair=getinput?
strtok（getinput,"
）:
NULL;
while（nvpair）{
pairlist[paircount++]=strdup（nvpair）;
if（!
（paircount%256））
pairlist=（char**）realloc（pairlist,（paircount+256）*sizeof（char**））;
nvpair=strtok（NULL,"
pairlist[paircount]=0;
getvars=（char**）malloc（（paircount*2+1）*sizeof（char**））;
for（i=0;
i<
paircount;
i++）{
if（eqpos=strchr（pairlist[i],'
='
*eqpos='
unescape_url（getvars[i*2+1]=strdup（eqpos+1））;
}else{
unescape_url（getvars[i*2+1]=strdup（"
unescape_url（getvars[i*2]=strdup（pairlist[i]））;
getvars[paircount*2]=0;
pairlist[i];
i++）
free（pairlist[i]）;
free（pairlist）;
free（getinput）;
returngetvars;
/*getPOSTvars
postvars*/
char**getPOSTvars（）{
inti,j,k;
intcontent_length;
char**postvars;
char*postinput;
char*content_type;
FILE*df;
FILE*fplog=fopen（"
/log.txt"
w"
if（NULL==fplog）{
%snichtgefunden!
"
log.txt"
exit
（1）;
content_type=getenv（"
CONTENT_TYPE"
content_type）{
noContenttype\n"
fclose（fplog）;
//df=fopen（"
/content.html"
//fwrite（content_type,1,（int）strlen（content_type）,df）;
//fclose（df）;
postinput=getenv（"
CONTENT_LENGTH"
postinput）{
noContentlength\n"
if（!
（content_length=atoi（postinput）））{
（postinput=（char*）malloc（content_length+1）））{
fread（postinput,content_length,1,stdin））{
postinput[content_length]='
/post.html"
//fwrite（postinput,1,content_length,df）;
//fprintf（fplog,"
wrotepost.html\n"
charstringToFind[]="
multipart/form-data;
boundary="
//fornormalhtmlpostrequests
if（NULL==strstr（content_type,stringToFind））{
for（i=0;
postinput[i];
if（postinput[i]=='
postinput[i]='
pairlist=（char**）malloc（256*sizeof（char**））;
nvpair=strtok（postinput,"
pairlist[paircount++]=strdup（nvpair）;
pairlist=（char**）realloc（pairlist,（paircount+256）*sizeof（char**））;
nvpair=strtok（NULL,"
pairlist[paircount]=0;
postvars=（char**）malloc（（paircount*2+1）*sizeof（char**））;
for（i=0;
i<
i++）{
if（eqpos=strchr（pairlist[i],'
*eqpos='
unescape_url（postvars[i*2+1]=strdup（eqpos+1））;
unescape_url（postvars[i*2+1]=strdup（"
unescape_url（postvars[i*2]=strdup（pairlist[i]））;
postvars[paircount*2]=0;
free（pairlist[i]）;
free（postinput）;
extractedallpairs\n"
unsignedlongledG=0;
//readvalue
unsignedlongledR=0;
unsignedlongbuttons=0;
unsignedlongswitches=0;
charlcd1[17]="
lcd1[16]=0x00;
charlcd2[17]="
lcd2[16]=0x00;
charsevseg[9]={'
'
0x00};
unsignedlongseg=0;
intlcd_changed=0;
intseg7_changed=0;
intledR_changed=0;
intledG_changed=0;
for（i=0;
postvars[i];
i+=2）{
%i>
DEBUG:
[%s]=[%s]\n"
i,postvars[i],postvars[i+1]）;
if（strstr（postvars[i],"
LEDR"
if（*（postvars[i]+4）=='
1'
//ledR&
=~（1<
0）;
ledR|=1<
0;
}elseif（*（postvars[i]+4）=='
2'
1;
3'
2;
4'
3;
5'
4;
6'
5;
7'
6;
8'
7;
9'
8;
9;
B'
10;
C'
11;
D'
12;
E'
13;
F'
14;
G'
15;
H'
16;
I'
17;
ledR_changed=1;
[%s]=[%s]:
LEDR=%08X\n"
i,postvars[i],postvars[i+1],ledR）;
}elseif（strstr（postvars[i],"
LEDG"
ledG|=1<
}elseif（*（postvars[i
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