Multi tool use

how to convert curl --data-binary to python request?

I have the curl command:

curl 'https://example.com/submit'
-H 'Accept: */*'
-H 'Referer: http://www.example.com/go/'
-H 'Origin: http://www.example.com'
-H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36'
-H 'Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryFkQeCsmEXjVI5SJ0'
--data-binary $'------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="firstName"rnrOlegrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="campaignCode"rnrnrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="validation"rnrn{"firstName":"required"}rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn'
--compressed


with:

--data-binary $'------WebKitFormBoundary...'


but my converted version to python code does not work

import requests

headers = {
'Accept': '*/*',
'Referer': 'http://www.example.com/go',
'Origin': 'http://www.example.com',
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36',
'Content-Type': 'multipart/form-data; boundary=----WebKitFormBoundaryFkQeCsmEXjVI5SJ0'
}

data = '$------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="firstName"rnrOlegrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="campaignCode"rnrnrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="validation"rnrn{"firstName":"required"}rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn'

response = requests.post('https://example.com/submit', headers=headers,
data=data)


Maybe I'm missing something? how to convert --data-binary $?

--data-binary $

The curl command returns: {"success":true,"count":1}, but pycode returns: {"success":false,"count":1}

{"success":true,"count":1}

{"success":false,"count":1}

Also errors:

Without $ in datastring response-{"success":false,"count":0}.

$

data

{"success":false,"count":0}

Using a bytes instead of a str for data.

bytes

str

data

UPDATES:

this curl command works with curl 7.58.0 on my linux, but on windows- cmd command returns the same error as in the pycode without $

$

bytes

str

data

bytes

str

$

requests

cURL

$

2 Answers
2

The payload of a captured packet of your "curl" version :

MIME Multipart Media Encapsulation, Type: multipart/form-data, Boundary: "----WebKitFormBoundaryFkQeCsmEXjVI5SJ0"
[Type: multipart/form-data]
First boundary: ------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="firstName"rn
Data (6 bytes)
Data: 0d5c4f6c6567
[Length: 6]
Boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="campaignCode"rnrn
Boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="validation"rnrn
Data (24 bytes)
Data: 7b2266697273744e616d65223a227265717569726564227d
[Length: 24]
Last boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn


The payload of a captured packet of your "python" version :

MIME Multipart Media Encapsulation, Type: multipart/form-data, Boundary: "----WebKitFormBoundaryFkQeCsmEXjVI5SJ0"
[Type: multipart/form-data]
Preamble: 242d2d2d2d2d2d5765624b6974466f726d426f756e646172...
First boundary: ------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="campaignCode"rnrn
Boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="validation"rnrn
Data (24 bytes)
Data: 7b2266697273744e616d65223a227265717569726564227d
[Length: 24]
Last boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn


The first entry seem to be not recognized normaly.

You should remove "$" from head of variable data in python code.

"$"

data

data = '------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="firstName"rnrOlegrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="campaignCode"rnrnrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="validation"rnrn{"firstName":"required"}rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn'


Then, the payload of a captured packet of your new "python" version:

MIME Multipart Media Encapsulation, Type: multipart/form-data, Boundary: "----WebKitFormBoundaryFkQeCsmEXjVI5SJ0"
[Type: multipart/form-data]
First boundary: ------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="firstName"rn
Data (6 bytes)
Data: 0d5c4f6c6567
[Length: 6]
Boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="campaignCode"rnrn
Boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rn
Encapsulated multipart part:
Content-Disposition: form-data; name="validation"rnrn
Data (24 bytes)
Data: 7b2266697273744e616d65223a227265717569726564227d
[Length: 24]
Last boundary: rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn


This is same with "curl" version.

The problem is that your two commands aren't sending the same data.

Assuming you're running this in bash or a similar shell, $'-----blahblah…' doesn't mean the string '$-----blahblah…', it means the contents of the environment variable '-----blahblah…' if there is one, or the string '-----blahblah…' if there isn't. Since there almost certainly is no variable with that name, you just get the string—without the leading $.

$'-----blahblah…'

'$-----blahblah…'

'-----blahblah…'

'-----blahblah…'

$

But in Python, you're including the $ as part of the data. This means you've got an extra entry, the $, before the first multipart boundary.

$

$

To fix that, just don't do that. Instead of this:

data = '$------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="firstName"rnrOlegrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="campaignCode"rnrnrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="validation"rnrn{"firstName":"required"}rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn'


… do this:

data = '------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="firstName"rnrOlegrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="campaignCode"rnrnrn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0rnContent-Disposition: form-data; name="validation"rnrn{"firstName":"required"}rn------WebKitFormBoundaryFkQeCsmEXjVI5SJ0--rn'


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