我有一个用C语言编写的CGI程序，已经使用了20多年，而且很长一段时间以来，我第一次在Windows中运行，特别是Windows 10，但是我无法从CGI程序执行的system（）调用。似乎只是忽略了系统调用，并没有在我期望的服务器端创建我的输出。
从表单调用CGI程序，并使用sprintf将html页面响应组成一个巨大的缓冲区（szbuffer），然后打印到stdout，后者在apache世界中返回给客户端。这是将构建的html页面输出给用户的例程：
/** Print the CGI response header, required for all HTML output. **/
/** Note the extra \n, to send the blank line. **/
printf("Content-type: text/html\n\n") ;
printf("%s\n<!--JL 7/12/01 11:00am -->\n",szBuffer);
free ( szBuffer);
现在这已经可以工作好多年了，但是在这个版本中，我想运行一些系统调用来搜索csv文件并创建一个答案集，以便使用fopen（）进行读取。我在linux中完成此操作的方法是仅使用system（）命令运行命令：
getvaluecgivar(szcustomer_chain, "cust_field3", globals);
getvaluecgivar(szcustomer_id, "cust_field4", globals);
//sprintf(szdoscommand,"./awklookup_customer_id.bat %s %s "
sprintf(szdoscommand,"awklookup_customer_id.bat %s %s"
,szcustomer_chain
,szcustomer_id
);
system(szdoscommand);
system("cat lunch.trace >hw.lis");
system("cat lunch.trace >/temp/hwt.lis");
sprintf(szTempstring,"system command:%s: return code=%d\n"
,szdoscommand
,return_from_system_call
);
strcat(szBuffer, szTempstring);
} // then lookup by customer id
出于我需要解释和解决的原因，似乎好像system（）调用（它们全部三个）从未执行。这两个“ cat Lunch.trace”系统调用只是一个测试，以查看是否可以运行任何系统调用，并且这些命令似乎也失败了。现在，我知道我已经在Linux上完成了此操作，之前没有任何问题：
FILE * tfile;
system( "cat /tmp/relaystatus20*.txt >/tmp/rs20all.txt");
tfile = fopen( "/tmp/rs20all.txt" , "r");
if (tfile) {
strcat(szBuffer, "<pre>");
while(!feof(tfile)) {
，这将在/ tmp目录中创建文件rs20all.txt。
在Windows上我需要做些特别的事情吗？我确实从awklookup_customer_id.bat中捕获了返回代码，它是127。
这是awklookup_customer_id.bat，它可以从dos提示符cmd.exe或cygwin64终端正常运行：
call \jon\bat\local >t.lis
rem echo %1%, %2%
set arg1=%1%
set arg2=%2%
gawk -F',' '{ if($3==%arg1%) print $0 }' t5_clean_customer.csv >awk01.lis
gawk -F',' '{ if($4==%arg2%) print $0 }' awk01.lis >awk02.lis
\jon\bat\grep.exe -nf awk02.lis t5_clean_customer.csv >awk03.lis
cat awk03.lis|wc -l >awk03_c.lis
set LINE_COUNT=0
set /p LINE_COUNT=<awk03_c.lis
cut -d: -f1 awk03.lis >awk03_ln.lis
set LINE_NUMBER=0
set /p LINE_NUMBER=<awk03_ln.lis
SET /A Result = %LINE_COUNT% * 10000000 + %LINE_NUMBER%
echo number of lines that match :%LINE_COUNT% line number: %LINE_NUMBER%
rem pause
exit %Result%
我正在运行Apache 2.4，这是cgi程序获取的环境变量：
Print_environ::
[HTTP_HOST=localhost]
[HTTP_CONNECTION=keep-alive]
[CONTENT_LENGTH=380]
[HTTP_CACHE_CONTROL=max-age=0]
[HTTP_ORIGIN=http://localhost]
[HTTP_UPGRADE_INSECURE_REQUESTS=1]
[CONTENT_TYPE=application/x-www-form-urlencoded]
[HTTP_USER_AGENT=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36]
[HTTP_ACCEPT=text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8]
[HTTP_REFERER=http://localhost/cgi-bin/bf_customer.cgi]
[HTTP_ACCEPT_ENCODING=gzip, deflate, br]
[HTTP_ACCEPT_LANGUAGE=en-US,en;q=0.9]
[PATH=/cygdrive/c/Program Files (x86)/Common Files/Oracle/Java/javapath:/cygdrive/c/Program Files (x86)/Intel/iCLS Client:/cygdrive/c/Program Files/Intel/iCLS Client:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Intel/Intel(R) Management Engine Components/DAL:/cygdrive/c/Program Files/Intel/Intel(R) Management Engine Components/DAL:/cygdrive/c/Program Files (x86)/Intel/Intel(R) Management Engine Components/IPT:/cygdrive/c/Program Files/Intel/Intel(R) Management Engine Components/IPT:/cygdrive/c/Program Files (x86)/NVIDIA Corporation/PhysX/Common:/cygdrive/c/Windows/system32/config/systemprofile/.dnx/bin:/cygdrive/c/Program Files/Microsoft DNX/Dnvm:/cygdrive/c/Program Files (x86)/Windows Kits/8.1/Windows Performance Toolkit:/cygdrive/c/Program Files/Intel/WiFi/bin:/cygdrive/c/Program Files/Common Files/Intel/WirelessCommon:/cygdrive/c/Program Files (x86)/2Printer:/cygdrive/c/Program Files/MATLAB/MATLAB Runtime/v93/runtime/win64:/cygdrive/c/Program Files (x86)/Pico Technology/PicoScope6:/cygdrive/c/Program Files (x86)/IVI Foundation/VISA/WinNT/Bin:/cygdrive/c/Program Files/IVI Foundation/VISA/Win64/Bin:/cygdrive/c/Users/jleslie/AppData/Local/Microsoft/WindowsApps]
[SYSTEMROOT=C:\Windows]
[COMSPEC=C:\Windows\system32\cmd.exe]
[PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC]
[WINDIR=C:\Windows]
[SERVER_SIGNATURE=]
[SERVER_SOFTWARE=Apache/2.4.23 (Win64)]
[SERVER_NAME=localhost]
[SERVER_ADDR=::1]
[SERVER_PORT=80]
[REMOTE_ADDR=::1]
[DOCUMENT_ROOT=C:/jon/programs/Apache24/htdocs]
[REQUEST_SCHEME=http]
[CONTEXT_PREFIX=/cgi-bin/]
[CONTEXT_DOCUMENT_ROOT=c:/jon/programs/Apache24/cgi-bin/]
[SERVER_ADMIN=admin@example.com]
[SCRIPT_FILENAME=C:/jon/programs/Apache24/cgi-bin/bf_customer.cgi]
[REMOTE_PORT=52945]
[GATEWAY_INTERFACE=CGI/1.1]
[SERVER_PROTOCOL=HTTP/1.1]
[REQUEST_METHOD=POST]
[QUERY_STRING=]
[REQUEST_URI=/cgi-bin/bf_customer.cgi]
[SCRIPT_NAME=/cgi-bin/bf_customer.cgi]
[TERM=cygwin]
[HOME=/home/jleslie]
cgi vars:
[colora] = [maroon]
[cust_field1] = []
[cust_field2] = []
[cust_field3] = [0]
[cust_field4] = [16]
答案 0 :(得分：0)
我知道了。答案与httpd.conf有关。我需要告诉apache可以运行.bat文件：
# (You will also need to add "ExecCGI" to the "Options" directive.)
#
#AddHandler cgi-script .cgi
AddHandler cgi-script .bat # add .exe if you wish
Options +ExecCGI +FollowSymlinks
很抱歉与return_from_system_call混淆，我经常添加和删除它，所以我经常发布未设置代码的版本。这是有效的最终代码部分：
getvaluecgivar(szcustomer_chain, "cust_field3", globals);
getvaluecgivar(szcustomer_id, "cust_field4", globals);
sprintf(szdoscommand,"awklookup_customer_id.bat %s %s"
,szcustomer_chain
,szcustomer_id
);
return_from_system_call =system(szdoscommand);
sprintf(szTempstring,"system command:%s: return code=%d\n"
,szdoscommand
,return_from_system_call
);
strcat(szBuffer, szTempstring);