Paws::WAF::ByteMatchTuple
This class represents one of two things:
Use the attributes of this class as arguments to methods. You shouldn't make instances of this class. Each attribute should be used as a named argument in the calls that expect this type of object.
As an example, if Att1 is expected to be a Paws::WAF::ByteMatchTuple object:
$service_obj->Method(Att1 => { FieldToMatch => $value, ..., TextTransformation => $value });
Use accessors for each attribute. If Att1 is expected to be an Paws::WAF::ByteMatchTuple object:
$result = $service_obj->Method(...); $result->Att1->FieldToMatch
The bytes (typically a string that corresponds with ASCII characters) that you want AWS WAF to search for in web requests, the location in requests that you want AWS WAF to search, and other settings.
The part of a web request that you want AWS WAF to search, such as a specified header or a query string. For more information, see FieldToMatch.
Within the portion of a web request that you want to search (for example, in the query string, if any), specify where you want AWS WAF to search. Valid values include the following:
CONTAINS
The specified part of the web request must include the value of TargetString, but the location doesn't matter.
TargetString
CONTAINS_WORD
The specified part of the web request must include the value of TargetString, and TargetString must contain only alphanumeric characters or underscore (A-Z, a-z, 0-9, or _). In addition, TargetString must be a word, which means one of the following:
TargetString exactly matches the value of the specified part of the web request, such as the value of a header.
TargetString is at the beginning of the specified part of the web request and is followed by a character other than an alphanumeric character or underscore (_), for example, BadBot;.
BadBot;
TargetString is at the end of the specified part of the web request and is preceded by a character other than an alphanumeric character or underscore (_), for example, ;BadBot.
;BadBot
TargetString is in the middle of the specified part of the web request and is preceded and followed by characters other than alphanumeric characters or underscore (_), for example, -BadBot;.
-BadBot;
EXACTLY
The value of the specified part of the web request must exactly match the value of TargetString.
STARTS_WITH
The value of TargetString must appear at the beginning of the specified part of the web request.
ENDS_WITH
The value of TargetString must appear at the end of the specified part of the web request.
The value that you want AWS WAF to search for. AWS WAF searches for the specified string in the part of web requests that you specified in C<FieldToMatch>. The maximum length of the value is 50 bytes.
Valid values depend on the values that you specified for FieldToMatch:
FieldToMatch
HEADER: The value that you want AWS WAF to search for in the request header that you specified in FieldToMatch, for example, the value of the User-Agent or Referer header.
HEADER
User-Agent
Referer
METHOD: The HTTP method, which indicates the type of operation specified in the request. CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
METHOD
DELETE
GET
HEAD
OPTIONS
PATCH
POST
PUT
QUERY_STRING: The value that you want AWS WAF to search for in the query string, which is the part of a URL that appears after a ? character.
QUERY_STRING
?
URI: The value that you want AWS WAF to search for in the part of a URL that identifies a resource, for example, /images/daily-ad.jpg.
URI
/images/daily-ad.jpg
BODY: The part of a request that contains any additional data that you want to send to your web server as the HTTP request body, such as data from a form. The request body immediately follows the request headers. Note that only the first 8192 bytes of the request body are forwarded to AWS WAF for inspection. To allow or block requests based on the length of the body, you can create a size constraint set. For more information, see CreateSizeConstraintSet.
BODY
8192
SINGLE_QUERY_ARG: The parameter in the query string that you will inspect, such as UserName or SalesRegion. The maximum length for SINGLE_QUERY_ARG is 30 characters.
SINGLE_QUERY_ARG
ALL_QUERY_ARGS: Similar to SINGLE_QUERY_ARG, but instead of inspecting a single parameter, AWS WAF inspects all parameters within the query string for the value or regex pattern that you specify in TargetString.
ALL_QUERY_ARGS
If TargetString includes alphabetic characters A-Z and a-z, note that the value is case sensitive.
If you're using the AWS WAF API
Specify a base64-encoded version of the value. The maximum length of the value before you base64-encode it is 50 bytes.
For example, suppose the value of Type is HEADER and the value of Data is User-Agent. If you want to search the User-Agent header for the value BadBot, you base64-encode BadBot using MIME base64-encoding and include the resulting value, QmFkQm90, in the value of TargetString.
Type
Data
BadBot
QmFkQm90
If you're using the AWS CLI or one of the AWS SDKs
The value that you want AWS WAF to search for. The SDK automatically base64 encodes the value.
Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass AWS WAF. If you specify a transformation, AWS WAF performs the transformation on C<TargetString> before inspecting a request for a match.
You can only specify a single type of TextTransformation.
CMD_LINE
When you're concerned that attackers are injecting an operating system command line command and using unusual formatting to disguise some or all of the command, use this option to perform the following transformations:
Delete the following characters: \ " ' ^
Delete spaces before the following characters: / (
Replace the following characters with a space: , ;
Replace multiple spaces with one space
Convert uppercase letters (A-Z) to lowercase (a-z)
COMPRESS_WHITE_SPACE
Use this option to replace the following characters with a space character (decimal 32):
\f, formfeed, decimal 12
\t, tab, decimal 9
\n, newline, decimal 10
\r, carriage return, decimal 13
\v, vertical tab, decimal 11
non-breaking space, decimal 160
COMPRESS_WHITE_SPACE also replaces multiple spaces with one space.
HTML_ENTITY_DECODE
Use this option to replace HTML-encoded characters with unencoded characters. HTML_ENTITY_DECODE performs the following operations:
Replaces (ampersand)quot; with "
(ampersand)quot;
"
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
(ampersand)nbsp;
Replaces (ampersand)lt; with a "less than" symbol
(ampersand)lt;
Replaces (ampersand)gt; with >
(ampersand)gt;
>
Replaces characters that are represented in hexadecimal format, (ampersand)(hash)xhhhh;, with the corresponding characters
(ampersand)(hash)xhhhh;
Replaces characters that are represented in decimal format, (ampersand)(hash)nnnn;, with the corresponding characters
(ampersand)(hash)nnnn;
LOWERCASE
Use this option to convert uppercase letters (A-Z) to lowercase (a-z).
URL_DECODE
Use this option to decode a URL-encoded value.
NONE
Specify NONE if you don't want to perform any text transformations.
This class forms part of Paws, describing an object used in Paws::WAF
The source code is located here: https://github.com/pplu/aws-sdk-perl
Please report bugs to: https://github.com/pplu/aws-sdk-perl/issues
To install Paws::SDK::Config, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Paws::SDK::Config
CPAN shell
perl -MCPAN -e shell install Paws::SDK::Config
For more information on module installation, please visit the detailed CPAN module installation guide.