Nvdlib

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**Bugfixes**

- Updated `cve.py` to utilize the correct parameter to allow sorting of CVE collections by date. The parameter is `sortBy` with a value of `publishDate`. By Smjert in https://github.com/vehemont/nvdlib/pull/8

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**Bugfixes**

- Update `get.py` and `cve.py` to set the request encoding to `utf-8` to prevent any incorrect decoding of requests.

**Improvements**

- Update `cve.py` to add a request timeout of 30 seconds.
- Updated `get.py` to enhance the `verbose=True` parameter to work with `searchCVE` and `searchCPE` and it will now print the parameters with each query to see what page a request is failing on, as utilizing `.raise_for_status()` to raise an HTTPError object if an error occurs during the request (such as 403 forbidden from too many requests).

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**Bugfixes**

- Update get.py and cve.py by GamehunterKaan in https://github.com/vehemont/nvdlib/pull/5
- Removed exit() function that causes the program to abort. Modules shouldn't exit.
- Updated cve.py `searchCVE` doc string to include the `cweId` parameter.

**Improvements**

- Updated cve.py to include the `sortPublished` parameter that is supposed to sort a CVE collection by published date, rather than the default modified date. In my testing, I have not been able to get this parameter working as expected, and I receive no changes in response with or without the `sortOrder=publishedDate` parameter.
I have decided to include the parameter since it is a valid API parameter. The NVD developer guide (https://nvd.nist.gov/developers/vulnerabilities) recommends to use this parameter to prevent missing CVEs when searching for large amounts of CVEs.

-------------------
**Bugfixes**

- Update get.py by GamehunterKaan in https://github.com/vehemont/nvdlib/pull/4
- Update request timeout in `get.py` to 30 seconds from 10 seconds because most api requests take longer than 10 seconds.
- Update exception message from paramaters to str(paramaters) to prevent TypeErrors.

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**Improvements**

- Added the ability to pass `datetime` objects to searchCVE and searchCPE as mod/pub dates instead of strings. Strings will still work at this time.
python
>>> end = datetime.datetime.now()
>>> start = end - datetime.timedelta(days=7)
>>> r = nvdlib.searchCVE(pubStartDate=start, pubEndDate=end, verbose=True)
Filter:
https://services.nvd.nist.gov/rest/json/cves/1.0?pubStartDate=2022-02-08T08:57:26:000 UTC-00:00&pubEndDate=2022-02-15T08:57:26:000 UTC-00:00
>>> len(r)
629

- Reworked __buildCVECall to utilize a dictionary to pass to __get using requests params argument, instead of building the string from scratch.
- Added a test framework (courtesy of calve)


**Bugfixes**

- Immediately returned results if the total results from a search equals 20, instead of attempting to request a non-existant page.

-------------------
**Improvements**

Updated CVE attribute `score` to include the severity, also rearranged the list to have the CVSS score version as the first element. This attribute is available on all CVEs and is a simpler way to obtain a score for a CVE without minding the version of the score.

Old:
python
>>> print(r[0].score)
[8.8,'V3']


New:
python
>>> print(r[0].score)
['V3', 8.8, 'HIGH']

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