how to define a formatted string with requests ?

[commandline-be]

Dear

Having to work with CPE 2.3 and CPE 2.2 strings i find myself wanting for a way to define a formatted string. I'd like to submit this as https://url/cpe/

CPE look like as defined here https://nvd.nist.gov/products/cpe (XML spec)

Now i don't expect people to do the work for me but i do think it is important to share some detail here to understand what i'm trying to achieve. I hope to be able to validate the and send it in the correct format to a backend which then returns json.

So essentially i'm looking how to parse a in the format show below and check if it contains either a value or a :*

With the well formed name (WFN) looking like cpe:<version>:<part>:<vendor>:<product>:<version>:<update>:<edition>:<language>:<sw_edition>:<target_sw>:<target_hw>:<other> the formatted cpestring looks like for example cpe:2.3:a:microsoft:internet_explorer:8.0.6001:beta:*:*:*:*:*:*

the WFN is strict in the sense that (for completeness i add all) descriptions (spec is WFN 5.3.2 in nistir7695.pdf)
in conclusion an otherview of the and their scope

<version>: is either "2.2" or "2.3" (without the quotes)

<part> : The part attribute SHALL have one of these three string values:
 The value “a”, when the WFN is for a class of applications.
 The value “o”, when the WFN is for a class of operating systems.
 The value “h”, when the WFN is for a class of hardware devices.

<vendor> is a string of characters
<product> is a string of characters
<version> is a string of characters
<update> is a string of characters
<edition> is a string of characters
<language> region code as for RFC5646
<sw_edition> is a string of characters to characterize how the product is tailored
<target_sw> is a string of characters to characterize the computing environment
<target_hw> is a string of characters to characterize the instruction set
<other> is a string of characters but not URL, UUID etc.

[somehowchris]

@commandline-be how about a regex? 😩