2016/01/28 - AWS WAF - 5 new9 updated api methods
Returns an array of SizeConstraintSetSummary objects.
Request Syntax
client.list_size_constraint_sets(
NextMarker='string',
Limit=123
)
string
If you specify a value for Limit and you have more SizeConstraintSets than the value of Limit, AWS WAF returns a NextMarker value in the response that allows you to list another group of SizeConstraintSets. For the second and subsequent ListSizeConstraintSets requests, specify the value of NextMarker from the previous response to get information about another batch of SizeConstraintSets.
integer
[REQUIRED]
Specifies the number of SizeConstraintSet objects that you want AWS WAF to return for this request. If you have more SizeConstraintSets objects than the number you specify for Limit, the response includes a NextMarker value that you can use to get another batch of SizeConstraintSet objects.
dict
Response Syntax
{
'NextMarker': 'string',
'SizeConstraintSets': [
{
'SizeConstraintSetId': 'string',
'Name': 'string'
},
]
}
Response Structure
(dict) --
NextMarker (string) --
If you have more SizeConstraintSet objects than the number that you specified for Limit in the request, the response includes a NextMarker value. To list more SizeConstraintSet objects, submit another ListSizeConstraintSets request, and specify the NextMarker value from the response in the NextMarker value in the next request.
SizeConstraintSets (list) --
An array of SizeConstraintSetSummary objects.
(dict) --
The Id and Name of a SizeConstraintSet.
SizeConstraintSetId (string) --
A unique identifier for a SizeConstraintSet. You use SizeConstraintSetId to get information about a SizeConstraintSet (see GetSizeConstraintSet), update a SizeConstraintSet (see UpdateSizeConstraintSet, insert a SizeConstraintSet into a Rule or delete one from a Rule (see UpdateRule), and delete a SizeConstraintSet from AWS WAF (see DeleteSizeConstraintSet).
SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.
Name (string) --
The name of the SizeConstraintSet, if any.
Inserts or deletes SizeConstraint objects (filters) in a SizeConstraintSet. For each SizeConstraint object, you specify the following values:
Whether to insert or delete the object from the array. If you want to change a SizeConstraintSetUpdate object, you delete the existing object and add a new one.
The part of a web request that you want AWS WAF to evaluate, such as the length of a query string or the length of the User-Agent header.
Whether to perform any transformations on the request, such as converting it to lowercase, before checking its length. Note that transformations of the request body are not supported because the AWS resource forwards only the first 8192 bytes of your request to AWS WAF.
A ComparisonOperator used for evaluating the selected part of the request against the specified Size, such as equals, greater than, less than, and so on.
The length, in bytes, that you want AWS WAF to watch for in selected part of the request. The length is computed after applying the transformation.
For example, you can add a SizeConstraintSetUpdate object that matches web requests in which the length of the User-Agent header is greater than 100 bytes. You can then configure AWS WAF to block those requests.
To create and configure a SizeConstraintSet, perform the following steps:
Create a SizeConstraintSet. For more information, see CreateSizeConstraintSet.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateSizeConstraintSet request.
Submit an UpdateSizeConstraintSet request to specify the part of the request that you want AWS WAF to inspect (for example, the header or the URI) and the value that you want AWS WAF to watch for.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.update_size_constraint_set(
SizeConstraintSetId='string',
ChangeToken='string',
Updates=[
{
'Action': 'INSERT'|'DELETE',
'SizeConstraint': {
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE',
'ComparisonOperator': 'EQ'|'NE'|'LE'|'LT'|'GE'|'GT',
'Size': 123
}
},
]
)
string
[REQUIRED]
The SizeConstraintSetId of the SizeConstraintSet that you want to update. SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
list
[REQUIRED]
An array of SizeConstraintSetUpdate objects that you want to insert into or delete from a SizeConstraintSet. For more information, see the applicable data types:
SizeConstraintSetUpdate: Contains Action and SizeConstraint
SizeConstraint: Contains FieldToMatch, TextTransformation, ComparisonOperator, and Size
FieldToMatch: Contains Data and Type
(dict) --
Specifies the part of a web request that you want to inspect the size of and indicates whether you want to add the specification to a SizeConstraintSet or delete it from a SizeConstraintSet.
Action (string) -- [REQUIRED]
Specify INSERT to add a SizeConstraintSetUpdate to a SizeConstraintSet. Use DELETE to remove a SizeConstraintSetUpdate from a SizeConstraintSet.
SizeConstraint (dict) -- [REQUIRED]
Specifies a constraint on the size of a part of the web request. AWS WAF uses the Size, ComparisonOperator, and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
FieldToMatch (dict) -- [REQUIRED]
Specifies where in a web request to look for TargetString.
Type (string) -- [REQUIRED]
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TextTransformation (string) -- [REQUIRED]
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 FieldToMatch before inspecting a request for a match.
Note that if you choose BODY for the value of Type, you must choose NONE for TextTransformation because CloudFront forwards only the first 8192 bytes for inspection.
NONE
Specify NONE if you don't want to perform any text transformations.
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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
ComparisonOperator (string) -- [REQUIRED]
The type of comparison you want AWS WAF to perform. AWS WAF uses this in combination with the provided Size and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
EQ: Used to test if the Size is equal to the size of the FieldToMatch
NE: Used to test if the Size is not equal to the size of the FieldToMatch
LE: Used to test if the Size is less than or equal to the size of the FieldToMatch
LT: Used to test if the Size is strictly less than the size of the FieldToMatch
GE: Used to test if the Size is greater than or equal to the size of the FieldToMatch
GT: Used to test if the Size is strictly greater than the size of the FieldToMatch
Size (integer) -- [REQUIRED]
The size in bytes that you want AWS WAF to compare against the size of the specified FieldToMatch. AWS WAF uses this in combination with ComparisonOperator and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
Valid values for size are 0 - 21474836480 bytes (0 - 20 GB).
If you specify URI for the value of Type, the / in the URI counts as one character. For example, the URI /logo.jpg is nine characters long.
dict
Response Syntax
{
'ChangeToken': 'string'
}
Response Structure
(dict) --
ChangeToken (string) --
The ChangeToken that you used to submit the UpdateSizeConstraintSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
Permanently deletes a SizeConstraintSet. You can't delete a SizeConstraintSet if it's still used in any Rules or if it still includes any SizeConstraint objects (any filters).
If you just want to remove a SizeConstraintSet from a Rule, use UpdateRule.
To permanently delete a SizeConstraintSet, perform the following steps:
Update the SizeConstraintSet to remove filters, if any. For more information, see UpdateSizeConstraintSet.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of a DeleteSizeConstraintSet request.
Submit a DeleteSizeConstraintSet request.
Request Syntax
client.delete_size_constraint_set(
SizeConstraintSetId='string',
ChangeToken='string'
)
string
[REQUIRED]
The SizeConstraintSetId of the SizeConstraintSet that you want to delete. SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
dict
Response Syntax
{
'ChangeToken': 'string'
}
Response Structure
(dict) --
ChangeToken (string) --
The ChangeToken that you used to submit the DeleteSizeConstraintSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
Creates a SizeConstraintSet. You then use UpdateSizeConstraintSet to identify the part of a web request that you want AWS WAF to check for length, such as the length of the User-Agent header or the length of the query string. For example, you can create a SizeConstraintSet that matches any requests that have a query string that is longer than 100 bytes. You can then configure AWS WAF to reject those requests.
To create and configure a SizeConstraintSet, perform the following steps:
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of a CreateSizeConstraintSet request.
Submit a CreateSizeConstraintSet request.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateSizeConstraintSet request.
Submit an UpdateSizeConstraintSet request to specify the part of the request that you want AWS WAF to inspect (for example, the header or the URI) and the value that you want AWS WAF to watch for.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.create_size_constraint_set(
Name='string',
ChangeToken='string'
)
string
[REQUIRED]
A friendly name or description of the SizeConstraintSet. You can't change Name after you create a SizeConstraintSet.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
dict
Response Syntax
{
'SizeConstraintSet': {
'SizeConstraintSetId': 'string',
'Name': 'string',
'SizeConstraints': [
{
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE',
'ComparisonOperator': 'EQ'|'NE'|'LE'|'LT'|'GE'|'GT',
'Size': 123
},
]
},
'ChangeToken': 'string'
}
Response Structure
(dict) --
SizeConstraintSet (dict) --
A SizeConstraintSet that contains no SizeConstraint objects.
SizeConstraintSetId (string) --
A unique identifier for a SizeConstraintSet. You use SizeConstraintSetId to get information about a SizeConstraintSet (see GetSizeConstraintSet), update a SizeConstraintSet (see UpdateSizeConstraintSet, insert a SizeConstraintSet into a Rule or delete one from a Rule (see UpdateRule), and delete a SizeConstraintSet from AWS WAF (see DeleteSizeConstraintSet).
SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.
Name (string) --
The name, if any, of the SizeConstraintSet.
SizeConstraints (list) --
Specifies the parts of web requests that you want to inspect the size of.
(dict) --
Specifies a constraint on the size of a part of the web request. AWS WAF uses the Size, ComparisonOperator, and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
FieldToMatch (dict) --
Specifies where in a web request to look for TargetString.
Type (string) --
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TextTransformation (string) --
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 FieldToMatch before inspecting a request for a match.
Note that if you choose BODY for the value of Type, you must choose NONE for TextTransformation because CloudFront forwards only the first 8192 bytes for inspection.
NONE
Specify NONE if you don't want to perform any text transformations.
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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
ComparisonOperator (string) --
The type of comparison you want AWS WAF to perform. AWS WAF uses this in combination with the provided Size and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
EQ: Used to test if the Size is equal to the size of the FieldToMatch
NE: Used to test if the Size is not equal to the size of the FieldToMatch
LE: Used to test if the Size is less than or equal to the size of the FieldToMatch
LT: Used to test if the Size is strictly less than the size of the FieldToMatch
GE: Used to test if the Size is greater than or equal to the size of the FieldToMatch
GT: Used to test if the Size is strictly greater than the size of the FieldToMatch
Size (integer) --
The size in bytes that you want AWS WAF to compare against the size of the specified FieldToMatch. AWS WAF uses this in combination with ComparisonOperator and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
Valid values for size are 0 - 21474836480 bytes (0 - 20 GB).
If you specify URI for the value of Type, the / in the URI counts as one character. For example, the URI /logo.jpg is nine characters long.
ChangeToken (string) --
The ChangeToken that you used to submit the CreateSizeConstraintSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
Returns the SizeConstraintSet specified by SizeConstraintSetId.
Request Syntax
client.get_size_constraint_set(
SizeConstraintSetId='string'
)
string
[REQUIRED]
The SizeConstraintSetId of the SizeConstraintSet that you want to get. SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.
dict
Response Syntax
{
'SizeConstraintSet': {
'SizeConstraintSetId': 'string',
'Name': 'string',
'SizeConstraints': [
{
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE',
'ComparisonOperator': 'EQ'|'NE'|'LE'|'LT'|'GE'|'GT',
'Size': 123
},
]
}
}
Response Structure
(dict) --
SizeConstraintSet (dict) --
Information about the SizeConstraintSet that you specified in the GetSizeConstraintSet request. For more information, see the following topics:
SizeConstraintSet: Contains SizeConstraintSetId, SizeConstraints, and Name
SizeConstraints: Contains an array of SizeConstraint objects. Each SizeConstraint object contains FieldToMatch, TextTransformation, ComparisonOperator, and Size
FieldToMatch: Contains Data and Type
SizeConstraintSetId (string) --
A unique identifier for a SizeConstraintSet. You use SizeConstraintSetId to get information about a SizeConstraintSet (see GetSizeConstraintSet), update a SizeConstraintSet (see UpdateSizeConstraintSet, insert a SizeConstraintSet into a Rule or delete one from a Rule (see UpdateRule), and delete a SizeConstraintSet from AWS WAF (see DeleteSizeConstraintSet).
SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.
Name (string) --
The name, if any, of the SizeConstraintSet.
SizeConstraints (list) --
Specifies the parts of web requests that you want to inspect the size of.
(dict) --
Specifies a constraint on the size of a part of the web request. AWS WAF uses the Size, ComparisonOperator, and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
FieldToMatch (dict) --
Specifies where in a web request to look for TargetString.
Type (string) --
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TextTransformation (string) --
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 FieldToMatch before inspecting a request for a match.
Note that if you choose BODY for the value of Type, you must choose NONE for TextTransformation because CloudFront forwards only the first 8192 bytes for inspection.
NONE
Specify NONE if you don't want to perform any text transformations.
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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
ComparisonOperator (string) --
The type of comparison you want AWS WAF to perform. AWS WAF uses this in combination with the provided Size and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
EQ: Used to test if the Size is equal to the size of the FieldToMatch
NE: Used to test if the Size is not equal to the size of the FieldToMatch
LE: Used to test if the Size is less than or equal to the size of the FieldToMatch
LT: Used to test if the Size is strictly less than the size of the FieldToMatch
GE: Used to test if the Size is greater than or equal to the size of the FieldToMatch
GT: Used to test if the Size is strictly greater than the size of the FieldToMatch
Size (integer) --
The size in bytes that you want AWS WAF to compare against the size of the specified FieldToMatch. AWS WAF uses this in combination with ComparisonOperator and FieldToMatch to build an expression in the form of " Size ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
Valid values for size are 0 - 21474836480 bytes (0 - 20 GB).
If you specify URI for the value of Type, the / in the URI counts as one character. For example, the URI /logo.jpg is nine characters long.
{'ByteMatchSet': {'ByteMatchTuples': {'FieldToMatch': {'Type': {'BODY'}}}}}
Creates a ByteMatchSet. You then use UpdateByteMatchSet to identify the part of a web request that you want AWS WAF to inspect, such as the values of the User-Agent header or the query string. For example, you can create a ByteMatchSet that matches any requests with User-Agent headers that contain the string BadBot. You can then configure AWS WAF to reject those requests.
To create and configure a ByteMatchSet, perform the following steps:
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of a CreateByteMatchSet request.
Submit a CreateByteMatchSet request.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateByteMatchSet request.
Submit an UpdateByteMatchSet request to specify the part of the request that you want AWS WAF to inspect (for example, the header or the URI) and the value that you want AWS WAF to watch for.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.create_byte_match_set(
Name='string',
ChangeToken='string'
)
string
[REQUIRED]
A friendly name or description of the ByteMatchSet. You can't change Name after you create a ByteMatchSet.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
dict
Response Syntax
{
'ByteMatchSet': {
'ByteMatchSetId': 'string',
'Name': 'string',
'ByteMatchTuples': [
{
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TargetString': b'bytes',
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE',
'PositionalConstraint': 'EXACTLY'|'STARTS_WITH'|'ENDS_WITH'|'CONTAINS'|'CONTAINS_WORD'
},
]
},
'ChangeToken': 'string'
}
Response Structure
(dict) --
ByteMatchSet (dict) --
A ByteMatchSet that contains no ByteMatchTuple objects.
ByteMatchSetId (string) --
The ByteMatchSetId for a ByteMatchSet. You use ByteMatchSetId to get information about a ByteMatchSet (see GetByteMatchSet), update a ByteMatchSet (see UpdateByteMatchSet, insert a ByteMatchSet into a Rule or delete one from a Rule (see UpdateRule), and delete a ByteMatchSet from AWS WAF (see DeleteByteMatchSet).
ByteMatchSetId is returned by CreateByteMatchSet and by ListByteMatchSets.
Name (string) --
A friendly name or description of the ByteMatchSet. You can't change Name after you create a ByteMatchSet.
ByteMatchTuples (list) --
Specifies 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.
(dict) --
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.
FieldToMatch (dict) --
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.
Type (string) --
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TargetString (bytes) --
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 FieldToMatch. The maximum length of the value is 50 bytes.
Valid values depend on the values that you specified for 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.
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.
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.
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.
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.
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.
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.
TextTransformation (string) --
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 TargetString before inspecting a request for a match.
CMD_LINE
When you're concerned that attackers are injecting an operating system commandline 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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
PositionalConstraint (string) --
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.
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;.
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.
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;.
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.
ChangeToken (string) --
The ChangeToken that you used to submit the CreateByteMatchSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
{'Rule': {'Predicates': {'Type': {'SizeConstraint'}}}}
Creates a Rule, which contains the IPSet objects, ByteMatchSet objects, and other predicates that identify the requests that you want to block. If you add more than one predicate to a Rule, a request must match all of the specifications to be allowed or blocked. For example, suppose you add the following to a Rule:
An IPSet that matches the IP address 192.0.2.44/32
A ByteMatchSet that matches BadBot in the User-Agent header
You then add the Rule to a WebACL and specify that you want to blocks requests that satisfy the Rule. For a request to be blocked, it must come from the IP address 192.0.2.44 and the User-Agent header in the request must contain the value BadBot.
To create and configure a Rule, perform the following steps:
Create and update the predicates that you want to include in the Rule. For more information, see CreateByteMatchSet, CreateIPSet, and CreateSqlInjectionMatchSet.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of a CreateRule request.
Submit a CreateRule request.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateRule request.
Submit an UpdateRule request to specify the predicates that you want to include in the Rule.
Create and update a WebACL that contains the Rule. For more information, see CreateWebACL.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.create_rule(
Name='string',
MetricName='string',
ChangeToken='string'
)
string
[REQUIRED]
A friendly name or description of the Rule. You can't change the name of a Rule after you create it.
string
[REQUIRED]
A friendly name or description for the metrics for this Rule. The name can contain only alphanumeric characters (A-Z, a-z, 0-9); the name can't contain whitespace. You can't change the name of the metric after you create the Rule.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
dict
Response Syntax
{
'Rule': {
'RuleId': 'string',
'Name': 'string',
'MetricName': 'string',
'Predicates': [
{
'Negated': True|False,
'Type': 'IPMatch'|'ByteMatch'|'SqlInjectionMatch'|'SizeConstraint',
'DataId': 'string'
},
]
},
'ChangeToken': 'string'
}
Response Structure
(dict) --
Rule (dict) --
The Rule returned in the CreateRule response.
RuleId (string) --
A unique identifier for a Rule. You use RuleId to get more information about a Rule (see GetRule), update a Rule (see UpdateRule), insert a Rule into a WebACL or delete a one from a WebACL (see UpdateWebACL), or delete a Rule from AWS WAF (see DeleteRule).
RuleId is returned by CreateRule and by ListRules.
Name (string) --
The friendly name or description for the Rule. You can't change the name of a Rule after you create it.
MetricName (string) --
Predicates (list) --
The Predicates object contains one Predicate element for each ByteMatchSet, IPSet, or SqlInjectionMatchSet object that you want to include in a Rule.
(dict) --
Specifies the ByteMatchSet, IPSet, and SqlInjectionMatchSet objects that you want to add to a Rule and, for each object, indicates whether you want to negate the settings, for example, requests that do NOT originate from the IP address 192.0.2.44.
Negated (boolean) --
Set Negated to False if you want AWS WAF to allow, block, or count requests based on the settings in the specified ByteMatchSet, IPSet, or SqlInjectionMatchSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow or block requests based on that IP address.
Set Negated to True if you want AWS WAF to allow or block a request based on the negation of the settings in the ByteMatchSet, IPSet, or SqlInjectionMatchSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow, block, or count requests based on all IP addresses except 192.0.2.44.
Type (string) --
The type of predicate in a Rule, such as ByteMatchSet or IPSet.
DataId (string) --
A unique identifier for a predicate in a Rule, such as ByteMatchSetId or IPSetId. The ID is returned by the corresponding Create or List command.
ChangeToken (string) --
The ChangeToken that you used to submit the CreateRule request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
{'SqlInjectionMatchSet': {'SqlInjectionMatchTuples': {'FieldToMatch': {'Type': {'BODY'}}}}}
Creates a SqlInjectionMatchSet, which you use to allow, block, or count requests that contain snippets of SQL code in a specified part of web requests. AWS WAF searches for character sequences that are likely to be malicious strings.
To create and configure a SqlInjectionMatchSet, perform the following steps:
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of a CreateSqlInjectionMatchSet request.
Submit a CreateSqlInjectionMatchSet request.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateSqlInjectionMatchSet request.
Submit an UpdateSqlInjectionMatchSet request to specify the parts of web requests in which you want to allow, block, or count malicious SQL code.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.create_sql_injection_match_set(
Name='string',
ChangeToken='string'
)
string
[REQUIRED]
A friendly name or description for the SqlInjectionMatchSet that you're creating. You can't change Name after you create the SqlInjectionMatchSet.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
dict
Response Syntax
{
'SqlInjectionMatchSet': {
'SqlInjectionMatchSetId': 'string',
'Name': 'string',
'SqlInjectionMatchTuples': [
{
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE'
},
]
},
'ChangeToken': 'string'
}
Response Structure
(dict) --
The response to a CreateSqlInjectionMatchSet request.
SqlInjectionMatchSet (dict) --
A SqlInjectionMatchSet.
SqlInjectionMatchSetId (string) --
A unique identifier for a SqlInjectionMatchSet. You use SqlInjectionMatchSetId to get information about a SqlInjectionMatchSet (see GetSqlInjectionMatchSet), update a SqlInjectionMatchSet (see UpdateSqlInjectionMatchSet, insert a SqlInjectionMatchSet into a Rule or delete one from a Rule (see UpdateRule), and delete a SqlInjectionMatchSet from AWS WAF (see DeleteSqlInjectionMatchSet).
SqlInjectionMatchSetId is returned by CreateSqlInjectionMatchSet and by ListSqlInjectionMatchSets.
Name (string) --
The name, if any, of the SqlInjectionMatchSet.
SqlInjectionMatchTuples (list) --
Specifies the parts of web requests that you want to inspect for snippets of malicious SQL code.
(dict) --
Specifies the part of a web request that you want AWS WAF to inspect for snippets of malicious SQL code and, if you want AWS WAF to inspect a header, the name of the header.
FieldToMatch (dict) --
Specifies where in a web request to look for TargetString.
Type (string) --
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TextTransformation (string) --
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 FieldToMatch before inspecting a request for a match.
CMD_LINE
When you're concerned that attackers are injecting an operating system commandline 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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
ChangeToken (string) --
The ChangeToken that you used to submit the CreateSqlInjectionMatchSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
{'ByteMatchSet': {'ByteMatchTuples': {'FieldToMatch': {'Type': {'BODY'}}}}}
Returns the ByteMatchSet specified by ByteMatchSetId.
Request Syntax
client.get_byte_match_set(
ByteMatchSetId='string'
)
string
[REQUIRED]
The ByteMatchSetId of the ByteMatchSet that you want to get. ByteMatchSetId is returned by CreateByteMatchSet and by ListByteMatchSets.
dict
Response Syntax
{
'ByteMatchSet': {
'ByteMatchSetId': 'string',
'Name': 'string',
'ByteMatchTuples': [
{
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TargetString': b'bytes',
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE',
'PositionalConstraint': 'EXACTLY'|'STARTS_WITH'|'ENDS_WITH'|'CONTAINS'|'CONTAINS_WORD'
},
]
}
}
Response Structure
(dict) --
ByteMatchSet (dict) --
Information about the ByteMatchSet that you specified in the GetByteMatchSet request. For more information, see the following topics:
ByteMatchSet: Contains ByteMatchSetId, ByteMatchTuples, and Name
ByteMatchTuples: Contains an array of ByteMatchTuple objects. Each ByteMatchTuple object contains FieldToMatch, PositionalConstraint, TargetString, and TextTransformation
FieldToMatch: Contains Data and Type
ByteMatchSetId (string) --
The ByteMatchSetId for a ByteMatchSet. You use ByteMatchSetId to get information about a ByteMatchSet (see GetByteMatchSet), update a ByteMatchSet (see UpdateByteMatchSet, insert a ByteMatchSet into a Rule or delete one from a Rule (see UpdateRule), and delete a ByteMatchSet from AWS WAF (see DeleteByteMatchSet).
ByteMatchSetId is returned by CreateByteMatchSet and by ListByteMatchSets.
Name (string) --
A friendly name or description of the ByteMatchSet. You can't change Name after you create a ByteMatchSet.
ByteMatchTuples (list) --
Specifies 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.
(dict) --
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.
FieldToMatch (dict) --
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.
Type (string) --
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TargetString (bytes) --
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 FieldToMatch. The maximum length of the value is 50 bytes.
Valid values depend on the values that you specified for 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.
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.
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.
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.
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.
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.
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.
TextTransformation (string) --
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 TargetString before inspecting a request for a match.
CMD_LINE
When you're concerned that attackers are injecting an operating system commandline 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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
PositionalConstraint (string) --
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.
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;.
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.
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;.
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.
{'Rule': {'Predicates': {'Type': {'SizeConstraint'}}}}
Returns the Rule that is specified by the RuleId that you included in the GetRule request.
Request Syntax
client.get_rule(
RuleId='string'
)
string
[REQUIRED]
The RuleId of the Rule that you want to get. RuleId is returned by CreateRule and by ListRules.
dict
Response Syntax
{
'Rule': {
'RuleId': 'string',
'Name': 'string',
'MetricName': 'string',
'Predicates': [
{
'Negated': True|False,
'Type': 'IPMatch'|'ByteMatch'|'SqlInjectionMatch'|'SizeConstraint',
'DataId': 'string'
},
]
}
}
Response Structure
(dict) --
Rule (dict) --
Information about the Rule that you specified in the GetRule request. For more information, see the following topics:
Rule: Contains MetricName, Name, an array of Predicate objects, and RuleId
Predicate: Each Predicate object contains DataId, Negated, and Type
RuleId (string) --
A unique identifier for a Rule. You use RuleId to get more information about a Rule (see GetRule), update a Rule (see UpdateRule), insert a Rule into a WebACL or delete a one from a WebACL (see UpdateWebACL), or delete a Rule from AWS WAF (see DeleteRule).
RuleId is returned by CreateRule and by ListRules.
Name (string) --
The friendly name or description for the Rule. You can't change the name of a Rule after you create it.
MetricName (string) --
Predicates (list) --
The Predicates object contains one Predicate element for each ByteMatchSet, IPSet, or SqlInjectionMatchSet object that you want to include in a Rule.
(dict) --
Specifies the ByteMatchSet, IPSet, and SqlInjectionMatchSet objects that you want to add to a Rule and, for each object, indicates whether you want to negate the settings, for example, requests that do NOT originate from the IP address 192.0.2.44.
Negated (boolean) --
Set Negated to False if you want AWS WAF to allow, block, or count requests based on the settings in the specified ByteMatchSet, IPSet, or SqlInjectionMatchSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow or block requests based on that IP address.
Set Negated to True if you want AWS WAF to allow or block a request based on the negation of the settings in the ByteMatchSet, IPSet, or SqlInjectionMatchSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow, block, or count requests based on all IP addresses except 192.0.2.44.
Type (string) --
The type of predicate in a Rule, such as ByteMatchSet or IPSet.
DataId (string) --
A unique identifier for a predicate in a Rule, such as ByteMatchSetId or IPSetId. The ID is returned by the corresponding Create or List command.
{'SqlInjectionMatchSet': {'SqlInjectionMatchTuples': {'FieldToMatch': {'Type': {'BODY'}}}}}
Returns the SqlInjectionMatchSet that is specified by SqlInjectionMatchSetId.
Request Syntax
client.get_sql_injection_match_set(
SqlInjectionMatchSetId='string'
)
string
[REQUIRED]
The SqlInjectionMatchSetId of the SqlInjectionMatchSet that you want to get. SqlInjectionMatchSetId is returned by CreateSqlInjectionMatchSet and by ListSqlInjectionMatchSets.
dict
Response Syntax
{
'SqlInjectionMatchSet': {
'SqlInjectionMatchSetId': 'string',
'Name': 'string',
'SqlInjectionMatchTuples': [
{
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE'
},
]
}
}
Response Structure
(dict) --
The response to a GetSqlInjectionMatchSet request.
SqlInjectionMatchSet (dict) --
Information about the SqlInjectionMatchSet that you specified in the GetSqlInjectionMatchSet request. For more information, see the following topics:
SqlInjectionMatchSet: Contains Name, SqlInjectionMatchSetId, and an array of SqlInjectionMatchTuple objects
SqlInjectionMatchTuple: Each SqlInjectionMatchTuple object contains FieldToMatch and TextTransformation
FieldToMatch: Contains Data and Type
SqlInjectionMatchSetId (string) --
A unique identifier for a SqlInjectionMatchSet. You use SqlInjectionMatchSetId to get information about a SqlInjectionMatchSet (see GetSqlInjectionMatchSet), update a SqlInjectionMatchSet (see UpdateSqlInjectionMatchSet, insert a SqlInjectionMatchSet into a Rule or delete one from a Rule (see UpdateRule), and delete a SqlInjectionMatchSet from AWS WAF (see DeleteSqlInjectionMatchSet).
SqlInjectionMatchSetId is returned by CreateSqlInjectionMatchSet and by ListSqlInjectionMatchSets.
Name (string) --
The name, if any, of the SqlInjectionMatchSet.
SqlInjectionMatchTuples (list) --
Specifies the parts of web requests that you want to inspect for snippets of malicious SQL code.
(dict) --
Specifies the part of a web request that you want AWS WAF to inspect for snippets of malicious SQL code and, if you want AWS WAF to inspect a header, the name of the header.
FieldToMatch (dict) --
Specifies where in a web request to look for TargetString.
Type (string) --
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TextTransformation (string) --
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 FieldToMatch before inspecting a request for a match.
CMD_LINE
When you're concerned that attackers are injecting an operating system commandline 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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
{'Updates': {'ByteMatchTuple': {'FieldToMatch': {'Type': {'BODY'}}}}}
Inserts or deletes ByteMatchTuple objects (filters) in a ByteMatchSet. For each ByteMatchTuple object, you specify the following values:
Whether to insert or delete the object from the array. If you want to change a ByteMatchSetUpdate object, you delete the existing object and add a new one.
The part of a web request that you want AWS WAF to inspect, such as a query string or the value of the User-Agent header.
The bytes (typically a string that corresponds with ASCII characters) that you want AWS WAF to look for. For more information, including how you specify the values for the AWS WAF API and the AWS CLI or SDKs, see TargetString in the ByteMatchTuple data type.
Where to look, such as at the beginning or the end of a query string.
Whether to perform any conversions on the request, such as converting it to lowercase, before inspecting it for the specified string.
For example, you can add a ByteMatchSetUpdate object that matches web requests in which User-Agent headers contain the string BadBot. You can then configure AWS WAF to block those requests.
To create and configure a ByteMatchSet, perform the following steps:
Create a ByteMatchSet. For more information, see CreateByteMatchSet.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateByteMatchSet request.
Submit an UpdateByteMatchSet request to specify the part of the request that you want AWS WAF to inspect (for example, the header or the URI) and the value that you want AWS WAF to watch for.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.update_byte_match_set(
ByteMatchSetId='string',
ChangeToken='string',
Updates=[
{
'Action': 'INSERT'|'DELETE',
'ByteMatchTuple': {
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TargetString': b'bytes',
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE',
'PositionalConstraint': 'EXACTLY'|'STARTS_WITH'|'ENDS_WITH'|'CONTAINS'|'CONTAINS_WORD'
}
},
]
)
string
[REQUIRED]
The ByteMatchSetId of the ByteMatchSet that you want to update. ByteMatchSetId is returned by CreateByteMatchSet and by ListByteMatchSets.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
list
[REQUIRED]
An array of ByteMatchSetUpdate objects that you want to insert into or delete from a ByteMatchSet. For more information, see the applicable data types:
ByteMatchSetUpdate: Contains Action and ByteMatchTuple
ByteMatchTuple: Contains FieldToMatch, PositionalConstraint, TargetString, and TextTransformation
FieldToMatch: Contains Data and Type
(dict) --
In an UpdateByteMatchSet request, ByteMatchSetUpdate specifies whether to insert or delete a ByteMatchTuple and includes the settings for the ByteMatchTuple.
Action (string) -- [REQUIRED]
Specifies whether to insert or delete a ByteMatchTuple.
ByteMatchTuple (dict) -- [REQUIRED]
Information about the part of a web request that you want AWS WAF to inspect and the value that you want AWS WAF to search for. If you specify DELETE for the value of Action, the ByteMatchTuple values must exactly match the values in the ByteMatchTuple that you want to delete from the ByteMatchSet.
FieldToMatch (dict) -- [REQUIRED]
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.
Type (string) -- [REQUIRED]
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TargetString (bytes) -- [REQUIRED]
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 FieldToMatch. The maximum length of the value is 50 bytes.
Valid values depend on the values that you specified for 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.
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.
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.
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.
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.
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.
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.
TextTransformation (string) -- [REQUIRED]
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 TargetString before inspecting a request for a match.
CMD_LINE
When you're concerned that attackers are injecting an operating system commandline 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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
PositionalConstraint (string) -- [REQUIRED]
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.
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;.
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.
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;.
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.
dict
Response Syntax
{
'ChangeToken': 'string'
}
Response Structure
(dict) --
ChangeToken (string) --
The ChangeToken that you used to submit the UpdateByteMatchSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
{'Updates': {'Predicate': {'Type': {'SizeConstraint'}}}}
Inserts or deletes Predicate objects in a Rule. Each Predicate object identifies a predicate, such as a ByteMatchSet or an IPSet, that specifies the web requests that you want to allow, block, or count. If you add more than one predicate to a Rule, a request must match all of the specifications to be allowed, blocked, or counted. For example, suppose you add the following to a Rule:
A ByteMatchSet that matches the value BadBot in the User-Agent header
An IPSet that matches the IP address 192.0.2.44
You then add the Rule to a WebACL and specify that you want to block requests that satisfy the Rule. For a request to be blocked, the User-Agent header in the request must contain the value BadBot and the request must originate from the IP address 192.0.2.44.
To create and configure a Rule, perform the following steps:
Create and update the predicates that you want to include in the Rule.
Create the Rule. See CreateRule.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateRule request.
Submit an UpdateRule request to add predicates to the Rule.
Create and update a WebACL that contains the Rule. See CreateWebACL.
If you want to replace one ByteMatchSet or IPSet with another, you delete the existing one and add the new one.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.update_rule(
RuleId='string',
ChangeToken='string',
Updates=[
{
'Action': 'INSERT'|'DELETE',
'Predicate': {
'Negated': True|False,
'Type': 'IPMatch'|'ByteMatch'|'SqlInjectionMatch'|'SizeConstraint',
'DataId': 'string'
}
},
]
)
string
[REQUIRED]
The RuleId of the Rule that you want to update. RuleId is returned by CreateRule and by ListRules.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
list
[REQUIRED]
An array of RuleUpdate objects that you want to insert into or delete from a Rule. For more information, see the applicable data types:
RuleUpdate: Contains Action and Predicate
Predicate: Contains DataId, Negated, and Type
FieldToMatch: Contains Data and Type
(dict) --
Specifies a Predicate (such as an IPSet) and indicates whether you want to add it to a Rule or delete it from a Rule.
Action (string) -- [REQUIRED]
Specify INSERT to add a Predicate to a Rule. Use DELETE to remove a Predicate from a Rule.
Predicate (dict) -- [REQUIRED]
The ID of the Predicate (such as an IPSet) that you want to add to a Rule.
Negated (boolean) -- [REQUIRED]
Set Negated to False if you want AWS WAF to allow, block, or count requests based on the settings in the specified ByteMatchSet, IPSet, or SqlInjectionMatchSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow or block requests based on that IP address.
Set Negated to True if you want AWS WAF to allow or block a request based on the negation of the settings in the ByteMatchSet, IPSet, or SqlInjectionMatchSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow, block, or count requests based on all IP addresses except 192.0.2.44.
Type (string) -- [REQUIRED]
The type of predicate in a Rule, such as ByteMatchSet or IPSet.
DataId (string) -- [REQUIRED]
A unique identifier for a predicate in a Rule, such as ByteMatchSetId or IPSetId. The ID is returned by the corresponding Create or List command.
dict
Response Syntax
{
'ChangeToken': 'string'
}
Response Structure
(dict) --
ChangeToken (string) --
The ChangeToken that you used to submit the UpdateRule request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.
{'Updates': {'SqlInjectionMatchTuple': {'FieldToMatch': {'Type': {'BODY'}}}}}
Inserts or deletes SqlInjectionMatchTuple objects (filters) in a SqlInjectionMatchSet. For each SqlInjectionMatchTuple object, you specify the following values:
Action: Whether to insert the object into or delete the object from the array. To change a SqlInjectionMatchTuple, you delete the existing object and add a new one.
FieldToMatch: The part of web requests that you want AWS WAF to inspect and, if you want AWS WAF to inspect a header, the name of the header.
TextTransformation: Which text transformation, if any, to perform on the web request before inspecting the request for snippets of malicious SQL code.
You use SqlInjectionMatchSet objects to specify which CloudFront requests you want to allow, block, or count. For example, if you're receiving requests that contain snippets of SQL code in the query string and you want to block the requests, you can create a SqlInjectionMatchSet with the applicable settings, and then configure AWS WAF to block the requests.
To create and configure a SqlInjectionMatchSet, perform the following steps:
Submit a CreateSqlInjectionMatchSet request.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateIPSet request.
Submit an UpdateSqlInjectionMatchSet request to specify the parts of web requests that you want AWS WAF to inspect for snippets of SQL code.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
Request Syntax
client.update_sql_injection_match_set(
SqlInjectionMatchSetId='string',
ChangeToken='string',
Updates=[
{
'Action': 'INSERT'|'DELETE',
'SqlInjectionMatchTuple': {
'FieldToMatch': {
'Type': 'URI'|'QUERY_STRING'|'HEADER'|'METHOD'|'BODY',
'Data': 'string'
},
'TextTransformation': 'NONE'|'COMPRESS_WHITE_SPACE'|'HTML_ENTITY_DECODE'|'LOWERCASE'|'CMD_LINE'|'URL_DECODE'
}
},
]
)
string
[REQUIRED]
The SqlInjectionMatchSetId of the SqlInjectionMatchSet that you want to update. SqlInjectionMatchSetId is returned by CreateSqlInjectionMatchSet and by ListSqlInjectionMatchSets.
string
[REQUIRED]
The value returned by the most recent call to GetChangeToken.
list
[REQUIRED]
An array of SqlInjectionMatchSetUpdate objects that you want to insert into or delete from a SqlInjectionMatchSet. For more information, see the applicable data types:
SqlInjectionMatchSetUpdate: Contains Action and SqlInjectionMatchTuple
SqlInjectionMatchTuple: Contains FieldToMatch and TextTransformation
FieldToMatch: Contains Data and Type
(dict) --
Specifies the part of a web request that you want to inspect for snippets of malicious SQL code and indicates whether you want to add the specification to a SqlInjectionMatchSet or delete it from a SqlInjectionMatchSet.
Action (string) -- [REQUIRED]
Specify INSERT to add a SqlInjectionMatchSetUpdate to a SqlInjectionMatchSet. Use DELETE to remove a SqlInjectionMatchSetUpdate from a SqlInjectionMatchSet.
SqlInjectionMatchTuple (dict) -- [REQUIRED]
Specifies the part of a web request that you want AWS WAF to inspect for snippets of malicious SQL code and, if you want AWS WAF to inspect a header, the name of the header.
FieldToMatch (dict) -- [REQUIRED]
Specifies where in a web request to look for TargetString.
Type (string) -- [REQUIRED]
The part of the web request that you want AWS WAF to search for a specified string. Parts of a request that you can search include the following:
HEADER: A specified request header, for example, the value of the User-Agent or Referer header. If you choose HEADER for the type, specify the name of the header in Data.
METHOD: The HTTP method, which indicated the type of operation that the request is asking the origin to perform. Amazon CloudFront supports the following methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
QUERY_STRING: A query string, which is the part of a URL that appears after a ? character, if any.
URI: The part of a web request that identifies a resource, for example, /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.
Data (string) --
When the value of Type is HEADER, enter the name of the header that you want AWS WAF to search, for example, User-Agent or Referer. If the value of Type is any other value, omit Data.
The name of the header is not case sensitive.
TextTransformation (string) -- [REQUIRED]
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 FieldToMatch before inspecting a request for a match.
CMD_LINE
When you're concerned that attackers are injecting an operating system commandline 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 "
Replaces (ampersand)nbsp; with a non-breaking space, decimal 160
Replaces (ampersand)lt; with a "less than" symbol
Replaces (ampersand)gt; with >
Replaces characters that are represented in hexadecimal format, (ampersand)#xhhhh;, with the corresponding characters
Replaces characters that are represented in decimal format, (ampersand)#nnnn;, with the corresponding characters
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.
dict
Response Syntax
{
'ChangeToken': 'string'
}
Response Structure
(dict) --
The response to an UpdateSqlInjectionMatchSets request.
ChangeToken (string) --
The ChangeToken that you used to submit the UpdateSqlInjectionMatchSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.