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add support for connecting to mssql #224

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add support for connecting to mssql #224

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rgl
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@rgl rgl commented Aug 22, 2020

This fixes #223.

Please be aware that this is currently using a modified version of the denisenkom/go-mssqldb package as explained in #223.

Here's it working:

$ ./certigo connect --ca ~/Projects/sql-server-vagrant/tmp/ca/example-ca-crt.pem --start-tls mssql --name MSSQL 10.2.2.100
** TLS Connection **
Version: TLS 1.2
Cipher Suite: ECDHE_RSA key exchange, AES_256_GCM_SHA384 cipher

** CERTIFICATE 1 **
Valid: 2020-08-17 19:14 UTC to 2025-08-16 19:14 UTC
Subject:
	CN=MSSQL
Issuer:
	CN=Example CA
DNS Names:
	MSSQL
IP Addresses:
	192.168.121.113

Certificate has OCSP extension, but was unable to check status:
	asn1: syntax error: sequence truncated

Found 1 valid certificate chain(s):
[0] CN=MSSQL
	=> CN=Example CA [self-signed]

BTW, that Certificate has OCSP extension is bogus because none of the certificates in the chain have the OCSP extension.

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CLAassistant commented Aug 22, 2020 •
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@mcpherrinm
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yeah there's some bug in the OCSP handling right now. That's #192

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I think once your upstream change is merged into upstream, this is suitable for merging. Thanks!

Do you know how much this increases a certigo binary size?

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rgl commented Aug 25, 2020

It increases the binary size by 1392640 B ( ~1.3 MiB).

The actual binary size built with go 1.15 linux (go build -ldflags -s) was 9789440 (vs 8396800 without mssql).

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@mweissbacher mweissbacher Awaiting requested review from mweissbacher

@isemaya-square isemaya-square Awaiting requested review from isemaya-square

@mmontgomery-square mmontgomery-square Awaiting requested review from mmontgomery-square

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Add support for SQL Server
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@rgl @CLAassistant @mcpherrinm