**目录**
一、环境搭建
二、相关配置（部分）
三、调试运行
四、测试源码参考
五、常见错误
六、扩展（ccgi，sqlite）
# 一、环境搭建
操作系统：ubuntu12.04 lts
boa下载地址（但是我找不到...）:
我是其他网站找到的资源，但是忘了网址了，所以我直接上云盘资源
链接: https://pan.baidu.com/s/1_spr9mdcmsb8jpdm76fw6a 提取码: hb1e
可以参考：ubuntu下boa服务器的配置与搭建
cgi：直接终端安装 sudo apt-get install apache2
可以参考：
# 二、相关配置（部分）
boa我的配置：/etc/boa$ sudo vi boa.conf
我要评论# 下面几个都是关键点，基本就错这几个点上
# cumentroot /var/www
#将cgi保存的实际位置和网站地址做个对应
# scriptalias /cgi-bin/ /var/www/cgi-bin/
#cgi脚本运行时能看到的$path（可选）
# cgipath /bin:/usr/bin:/usr/local/bin
#如果想在任何位置都能运行cgi，要添加这个（可选）
addtype application/x-httpd-cgi cgi
# boa v0.94 configuration file
# file format has not changed from 0.93
# file format has changed little from 0.92
# version changes are noted in the comments
#
# the boa configuration file is parsed with a lex/yacc or flex/bison
# generated parser. if it reports an error, the line number will be
# provided; it should be easy to spot. the syntax of each of these
# rules is very simple, and they can occur in any order. where possible
# these directives mimic those of ncsa httpd 1.3; i saw no reason to
# introduce gratuitous differences.
# $id: boa.conf,v 1.25 2002/03/22 04:33:09 jnelson exp $
# the "serverroot" is not in this configuration file. it can be compiled
# into the server (see defines.h) or specified on the command line with
# the -c option, for example:
#
# boa -c /usr/local/boa
# port: the port boa runs on. the default port for http servers is 80.
# if it is less than 1024, the server must be started as root.
# 端口老是被占用，所以我改掉了
port 88
# listen: the internet address to bind(2) to. if you leave it out,
# it takes the behavior before 0.93.17.2, which is to bind to all
# addresses (inaddr_any). you only get one "listen" directive,
# if you want service on multiple ip addresses, you have three choices:
# 1. run boa without a "listen" directive
# a. all addresses are treated the same; makes sense if the addresses
# are localhost, ppp, and eth0.
# b. use the virtualhost directive below to point requests to different
# files. should be good for a very large number of addresses (web
# hosting clients).
# 2. run one copy of boa per ip address, each has its own configuration
# with a "listen" directive. no big deal up to a few tens of addresses.
# nice separation between clients.
# the name you provide gets run through inet_aton(3), so you have to use dotted
# quad notation. this configuration is too important to trust some dns.
#listen 192.68.0.5
# user: the name or uid the server should run as.
# group: the group name or gid the server should run as.
user 0
group 0
# serveradmin: the email address where server problems should be sent.
# note: this is not currently used, except as an environment variable
# for cgis.
#serveradmin root@localhost
# errorlog: the location of the error log file. if this does not start
# with /, it is considered relative to the server root.
# set to /dev/null if you don't want errors logged.
# if unset, defaults to /dev/stderr
errorlog /var/log/boa/error_log
# please note: sending the logs to a pipe ('|'), as shown below,
# is somewhat experimental and might fail under heavy load.
# "usual libc implementations of printf will stall the whole
# process if the receiving end of a pipe stops reading."
#errorlog "|/usr/sbin/cronolog --symlink=/var/log/boa/error_log /var/log/boa/error-%y%m%d.log"
# accesslog: the location of the access log file. if this does not
# start with /, it is considered relative to the server root.
# comment out or set to /dev/null (less effective) to disable
# access logging.
# accesslog /var/log/boa/access_log
# please note: sending the logs to a pipe ('|'), as shown below,
# is somewhat experimental and might fail under heavy load.
# "usual libc implementations of printf will stall the whole
# process if the receiving end of a pipe stops reading."
#accesslog "|/usr/sbin/cronolog --symlink=/var/log/boa/access_log /var/log/boa/access-%y%m%d.log"
# uselocaltime: logical switch. uncomment to use localtime
# instead of utc time
#uselocaltime
# verbosecgilogs: this is just a logical switch.
# it simply notes the start and stop times of cgis in the error log
# comment out to disable.
#verbosecgilogs
# servername: the name of this server that should be sent back to
# clients if different than that returned by gethostname + gethostbyname
servername www.your.org.here
# virtualhost: a logical switch.
# comment out to disable.
# given documentroot /var/www, requests on interface 'a' or ip 'ip-a'
# become /var/www/ip-a.
# example: http://localhost/ becomes /var/www/127.0.0.1
#
# not used until version 0.93.17.2. this "feature" also breaks commonlog
# output rules, it prepends the interface number to each access_log line.
# you are expected to fix that problem with a postprocessing script.
#virtualhost
# documentroot: the root directory of the html documents.
# comment out to disable server non user files.
documentroot /var/www
# userdir: the name of the directory which is appended onto a user's home
# directory if a ~user request is recieved.
userdir public_html
# directoryindex: name of the file to use as a pre-written html
# directory index. please make and use these files. on the
# fly creation of directory indexes can be _slow_.
# comment out to always use directorymaker
directoryindex
# directorymaker: name of program used to create a directory listing.
# comment out to disable directory listings. if both this and
# directoryindex are commented out, accessing a directory will give
# an error (though accessing files in the directory are still ok).
directorymaker /usr/lib/boa/boa_indexer
# directorycache: if directoryindex doesn't exist, and directorymaker
# has been commented out, the the on-the-fly indexing of boa can be used
# to generate indexes of directories. be warned that the output is
# extremely minimal and can cause delays when slow disks are used.
# note: the directorycache must be writable by the same user/group that
# boa runs as.
# directorycache /var/spool/boa/dircache
# keepalivemax: number of keepalive requests to allow per connection
# comment out, or set to 0 to disable keepalive processing
keepalivemax 1000
# keepalivetimeout: seconds to wait before keepalive connection times out
keepalivetimeout 10
# mimetypes: this is the file that is used to generate mime type pairs
# and content-type fields for boa.
# set to /dev/null if you do not want to load a mime types file.
# do *not* comment out (better use addtype!)
mimetypes /etc/mime.types
# defaulttype: mime type used if the file extension is unknown, or there
# is no file extension.
defaulttype text/plain
# cgipath: the value of the $path environment variable given to cgi progs.
cgipath /bin:/usr/bin:/usr/local/bin
# singlepostlimit: the maximum allowable number of bytes in
# a single post. default is normally 1mb.
# addtype: adds types without editing mime.types
# example: addtype type extension [extension ...]
# uncomment the next line if you want .cgi files to execute from anywhere
#addtype application/x-httpd-cgi cgi
# redirect, alias, and scriptalias all have the same semantics -- they
# match the beginning of a request and take appropriate action. use
# redirect for other servers, alias for the same server, and scriptalias
# to enable directories for script execution.
# redirect allows you to tell clients about documents which used to exist in
# your server's namespace, but do not anymore. this allows you to tell the
# clients where to look for the relocated document.
# example: redirect /bar http://elsewhere/feh/bar
# aliases: aliases one path to another.
# example: alias /path1/bar /path2/foo
alias /doc /usr/doc
# scriptalias: maps a virtual path to a directory for serving scripts
# example: scriptalias /htbin/ /www/htbin/
scriptalias /cgi-bin/ /var/www/cgi-bin/
cgi我的配置：sudo vi /etc/apache2/sites-enabled/000-default
servername 127.0.0.1
<virtualhost *:80>
serveradmin webmaster@localhost
documentroot /var/www
<directory />
options followsymlinks
allowoverride none
</directory>
<directory /var/www/>
options indexes followsymlinks multiviews
allowoverride none
order allow,deny
allow from all
</directory>
scriptalias /cgi-bin/ /usr/lib/cgi-bin/
<directory "/usr/lib/cgi-bin">
allowoverride none
options +execcgi -multiviews +symlinksifownermatch
order allow,deny
allow from all
</directory>
errorlog ${apache_log_dir}/error.log
# possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
loglevel warn
customlog ${apache_log_dir}/access.log combined
alias /doc/ "/usr/share/doc/"
<directory "/usr/share/doc/">
options indexes multiviews followsymlinks
allowoverride none
order deny,allow
deny from all
allow from 127.0.0.0/255.0.0.0 ::1/128
</directory>
</virtualhost>
# 三、调试运行
都配好后运行 sudo ./boa
访问 http://127.0.0.1:端口号
我的就是 http://127.0.0.1:88
gcc -o test.cgi test.c 编译生成 test.cgi
把cgi文件拷贝到 cgi-bin 下
网址就是 http://localhost:88/cgi-bin/test.cgi
# 四、测试源码参考
下面提供几个测试代码，转自其他大佬，不过我找不到网址了。
1、
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
char *data;
long m,n;
printf("content-type:text/html\n\n");
printf("<html>");
printf("<head>");
printf("<title>multi</title>");
printf("</head>");
printf("<body>");
printf("<h2 align=\"center\">multi control</h2>");
printf("<form method=\"get\" action=\"test1.cgi\">");
printf("<p>direction:<input type=\"text\" name=\"m\" value=\"\" size=\"18\">");
printf("<p>step number:<input type=\"text\" name=\"n\" value=\"\" size=\"17\">");
printf("<p align=\"left\">");
printf("<input type=\"submit\" value=\"submit\">");
printf("<input type=\"reset\" value=\"reset\">");
printf("</p>");
printf("</form>");
printf("</body>");
printf("</html>");
data=getenv("query_string");
if(!data)
printf("<p>get no datas and it's wrong.");
else if(sscanf(data,"m=%ld&n=%ld",&m,&n)!=2)
printf("<p>the input must be numbers");
else
printf("<p>%ld and %ld multi= %ld",m,n,m*n);
return 0;
}
2、
/var/www 下的pass.html
<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>用户登陆验证</title> </head> <body> <form name="form1" action="/cgi-bin/pass.cgi" method="post"> <table align="center"> <tr><td align="center" colspan="2"></td></tr> <tr> <td align="right">用户名</td> <td><input type="text" name="username"></td> </tr> <tr> <td align="right">密 码</td> <td><input type="password" name="password"></td> </tr> <tr> <td><input type="submit" value="登 录"></td> <td><input type="reset" value="取 消"></td> </tr> </table> </form> </body> </html>
/var/www/cgi-bin 下的pass.c
/*=====================================================================
cgi例子
=====================================================================*/
//pass.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char* getcgidata(file* fp, char* requestmethod);
int main()
{
char *input;
char *req_method;
char name[64];
char pass[64];
int i = 0;
int j = 0;
// printf("content-type: text/plain; charset=iso-8859-1\n\n");
printf("content-type: text/html\n\n");
printf("the following is query reuslt:<br><br>");
req_method = getenv("request_method");
input = getcgidata(stdin, req_method);
// 我们获取的input字符串可能像如下的形式
// username="admin"&password="aaaaa"
// 其中"username="和"&password="都是固定的
// 而"admin"和"aaaaa"都是变化的，也是我们要获取的
// 前面9个字符是username=
// 在"username="和"&"之间的是我们要取出来的用户名
for ( i = 9; i < (int)strlen(input); i++ )
{
if ( input[i] == '&' )
{
name[j] = '\0';
break;
}
name[j++] = input[i];
}
// 前面9个字符 + "&password="10个字符 + username的字符数
// 是我们不要的，故省略掉，不拷贝
for ( i = 19 + strlen(name), j = 0; i < (int)strlen(input); i++ )
{
pass[j++] = input[i];
}
pass[j] = '\0';
printf("your username is %s<br>your password is %s<br> \n", name, pass);
return 0;
}
char* getcgidata(file* fp, char* requestmethod)
{
char* input;
int len;
int size = 1024;
int i = 0;
if (!strcmp(requestmethod, "get"))
{
input = getenv("query_string");
return input;
}
else if (!strcmp(requestmethod, "post"))
{
len = atoi(getenv("content_length"));
input = (char*)malloc(sizeof(char)*(size + 1));
if (len == 0)
{
input[0] = '\0';
return input;
}
while(1)
{
input[i] = (char)fgetc(fp);
if (i == size)
{
input[i+1] = '\0';
return input;
}
--len;
if (feof(fp) || (!(len)))
{
i++;
input[i] = '\0';
return input;
}
i++;
}
}
return null;
}
效果图：
输入数据点击“登录”
自动跳转到 /cgi-bin/pass.cgi ,获取到数据并打印
# 五、常见错误
你的配置会影响网址，502什么错误也是配置或权限有问题导致的。
如：
502 bad gateway
the cgi was not cgi/1.1 compliant.
cgi_header: unable to find lflf
1.可能是网址打错了(路径是否和配置文件对应)
2.配置有问题
3.权限没给足 chmod 777 test.cgi
# 六、扩展（ccgi，sqlite）
cgic的主站点：
sqlite官网：
配置参考大佬博客：
我在调试中遇到的问题也在大佬的博客下面做了 评论 ，如果大家碰到问题可以参考一下。
补充：编译时会出错，使用
gcc -o config.cgi config.c sqlite3.c cgic.c -lsqlite3 -lpthread -ldl
![涉及文件]
![html效果]
![cgi页面]
数据已写入数据库，可使用以下命令
sqlite3 person.db .table select * from person;
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