uhttd 调试记录, post之cgi分析

DEBUGP("uh_http_header_parse: buflen = %d, headers = %s\n", buflen, headers);
for( i = (int)(headers - buffer); i < buflen; i++ )
{
/* found eol and have name + value, push out header tuple */
if( hdrname && hdrdata && (buffer[i] == '\r' || buffer[i] == '\n') )
{
buffer[i] = 0;

/* store */
if( (hdrcount + 1) < array_size(req.headers) )
{
req.headers[hdrcount++] = hdrname;
req.headers[hdrcount++] = hdrdata;

#ifdef INCLUDE_HTTPD_CGI
uri = &buffer[i+1];
DEBUGP("hdrname = %s, hdrdata = %s, uri = %s\n", hdrname, hdrdata, uri);
#endif
hdrname = hdrdata = NULL;
}

/* too large */
else
{
uh_http_response(cl, 413, "Request Entity Too Large");
return NULL;
}
}

/* have name but no value and found a colon, start of value */
else if( hdrname && !hdrdata && ((i+2) < buflen) &&
(buffer[i] == ':') && (buffer[i+1] == ' ')
) {
buffer[i] = 0;
hdrdata = &buffer[i+2];
}

/* have no name and found [A-Za-z], start of name */
else if( !hdrname && isalpha(buffer[i]) )
{
hdrname = &buffer[i];
}
}

上面代码实现的是解析HTTP收到的第1行以后的数据, 如下记录可看的更清楚

【Receive from 192.168.1.1 : 55142】：

uh_http_header_recv End: len = 432, buffer = POST /xutest/ip.cgi HTTP/1.1

Host: 192.168.1.1

User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip, deflate

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:570

【Receive from 192.168.1.1 : 56802】：

uh_http_header_parse: buflen = 431, headers = Host: 192.168.1.1

User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip, deflate

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:385

【Receive from 192.168.1.1 : 36916】：

hdrname = Host, hdrdata = 192.168.1.1, uri = 

User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip, deflate

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 51109】：

hdrname = User-Agent, hdrdata = Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0, uri = 

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip, deflate

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 60872】：

hdrname = Accept, hdrdata = text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8, uri = 

Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip, deflate

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 60156】：

hdrname = Accept-Language, hdrdata = zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3, uri = 

Accept-Encoding: gzip, deflate

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 48937】：

hdrname = Accept-Encoding, hdrdata = gzip, deflate, uri = 

Connection: keep-alive

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 59934】：

hdrname = Connection, hdrdata = keep-alive, uri = 

Referer:

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 42927】：

hdrname = Referer, hdrdata = , uri = 

Content-Type: application/x-www-form-urlencoded

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 39386】：

hdrname = Content-Type, hdrdata = application/x-www-form-urlencoded, uri = 

Content-Length: 82

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401

【Receive from 192.168.1.1 : 36893】：

hdrname = Content-Length, hdrdata = 82, uri = 

staticip=0&sip1=&sip2=&sip3=&sip4=&mip1=&mip2=&mip3=&mip4=&gip1=&gip2=&gip3=&gip4=

 File:uhttpd.c, Line:401