How to push changes to github after password authentication is deprecated

I tried to check-in some code to my github repository after more than 6 months today. I found that normal username and password for authentication does not work anymore. Instead I had to use Personal access token (PAT).

There's a simple step to generate PAT. Keep the code secure in a secure place as it will be required to push the change to the git. 

Create a token in github:

1) login to github site. 

2) on the top right corner, Click user icon.

3) on the dropdown menu,  select Settings.

4) click on Developer settings 

5) Select Personal Access token. 

6) Click Generate new token. And follow the instruction. 

7) select required permissions. 

Use token to push code:

1) Open console and locate the source folder. Run the code below: 

git push https://<GITHUB_ACCESS_TOKEN>@github.com/<GITHUB_USERNAME>/<REPOSITORY_NAME>.git

Example: 
git push https://ghp_N4dLdh4feZyO2F4XIt8NufA3056jSU2qlkoi@github.com/sanjeeb/myproject2.git

TFS -GIT CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT

Problem 1)

2019-07-02T14:19:12.5157398Z fatal: unable to access 'https://tfssite.company.com/tfs/UK_ProjectCollection/SalesPortal/_git/SalesPortalWeb/': SSL certificate problem: unable to get local issuer certificate

2019-07-02T14:19:12.9764145Z ##[error]Git fetch failed with exit code: 128

2019-07-02T14:19:12.9861630Z ##[section]Finishing: Get Sources

In the TFS_Build Server or App server(if build and app server is in the same machine) >

run the script from this url: https://blog.sanjeebojha.com.np/2019/06/git-ssl-certificate-problem-unable-to.html

Once this is done, you should get another problem:

Problem 2)  CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT

2019-07-02T14:24:57.1800199Z ##[command]git -c http.extraheader="AUTHORIZATION: bearer ***" fetch --tags --prune --progress --no-recurse-submodules origin

2019-07-02T14:24:57.4540146Z fatal: unable to access 'https://tfssite.company.com/tfs/UK_ProjectCollection/SalesPortal/_git/SalesPortalWeb/': schannel: CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT

2019-07-02T14:24:57.5198064Z ##[error]Git fetch failed with exit code: 128

2019-07-02T14:24:57.5288511Z ##[section]Finishing: Get Sources

  

1. Export the certificate public key to a file. The file is later required.
2. Open the url "https://tfssite.company.com/tfs/projectcollection" in IE
3. Click on the Lock icon in the browser address bar
4. 
5. 
6. 
7. Select The Root level Certificate and Click View Certificate
8. 
9. 
10. 
11. 
12. 
13. 
14. 
15. 

Now Find the certificate file from GIT folder. 

normally it's inside GIT\usr\ssl\certs folder

1. Copy the file to User folder

copy ca-bundle.trust.crt c:\Users\svc_tfs17_app

2. Config Git to use trusted certificate using the crt file.  
   git config --global http.sslCAInfo c:\Users\svc_tfs17_app\ca-bundle.crt
3. Convert the \n (Unix) to \r\n (Windows) so that it can be displayed by notepad editor correctly.
4. Use the unix2dos open source software to convert \n to \r\n, or other notepad editor to replace \n to \r\n.

Here's the download link: http://www.efgh.com/software/unix2dos.htm

5. Copy the content of tfs.cer from step o to ca-bundle.crt at the bottom of the file.

Done!

Output :

Read TFS Project name from TFS Project collection using c#

Using Team foundation api.
 References:

C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\ReferenceAssemblies\v2.0\Microsoft.TeamFoundation.dll
C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\ReferenceAssemblies\v2.0\Microsoft.TeamFoundation.Client.dll
C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\ReferenceAssemblies\v2.0\Microsoft.TeamFoundation.Common.dll
C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\ReferenceAssemblies\v2.0\Microsoft.TeamFoundation.WorkItemTracking.Client.dll


Code:
using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.Server;
using System;
using System.Linq;

class Program
{ private static ICommonStructureService _commonStructureService;
static void Main(string[] args)
{
ReadProject("https://tfssite.com/tfs/UK_ProjectCollection");
ReadProject("https://tfssite.com/tfs/IN_ProjectCollection");
Console.ReadKey();
} public static void ReadProject(String URL)
{
writeFile("Project Collection: " + URL);
TfsTeamProjectCollection tpc = new TfsTeamProjectCollection(new Uri(URL));
var collection = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(tpc.Uri);
_commonStructureService = collection.GetService<ICommonStructureService>(); var projects = _commonStructureService.ListAllProjects().OrderBy(a => a.Name);
foreach (var project in projects)
{

writeFile(project.Name);
} writeFile("------------------------------------------------------------------------------");
} public static void writeFile(String message) {
using (System.IO.StreamWriter file =
new System.IO.StreamWriter(@"C:\temp\tfs.txt", true))
{
file.WriteLine(message);
}
}
}

Output is the list of project names in tfs.txt file. 

GIT - SSL certificate problem: unable to get local issuer certificate

Error encountered while cloning the remote repository: Git failed with a fatal error.

unable to access 'https://tfssite.company.com/tfs/uk_projectcollection/SalesPortal/_git/SalesPortalWeb/': SSL certificate problem: unable to get local issuer certificate

Cloning into 'C:\Users\sojha\Source\Repos\SalesPortalWeb'...

Error encountered while cloning the remote repository: Git failed with a fatal error.

unable to access 'https://tfssite.company.com/tfs/uk_projectcollection/SalesPortal/_git/SalesPortalWeb/': SSL certificate problem: unable to get local issuer certificate

Solution: Open Visual Studio Command prompt

GIT provides an option to choose from OpenSSL and Secure Channel. Choosing secure channel in git global solves this issue.

Run the script:

git config --global http.sslBackend schannel