[7.0.3 Cherry-pick] Fix Entra ID tenant parsing for multi-segment STSURL authorities - #4572
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[7.0.3 Cherry-pick] Fix Entra ID tenant parsing for multi-segment STSURL authorities#4572github-actions[bot] wants to merge 1 commit into
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* Fix tenant parsing for multi-segment STSURL authorities Fixes #4496 The Dataverse/Dynamics 365 TDS endpoint returns an ADAL v1 style STSURL ("https://login.microsoftonline.com/{tenantId}/oauth2/authorize") in the FEDAUTHINFO token. AcquireTokenAsync split the authority at the last '/', so the tenant was parsed as the literal "authorize" and the authority host became ".../oauth2/", causing authentication to fail. The tenant is now taken from the first path segment of the authority URL, ignoring trailing endpoint suffixes, and the normalized authority (host + tenant) is used for the MSAL public client application. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: b4e906c9-daf3-46f8-83e7-ef805d81fdfb * Require an absolute HTTPS authority with a tenant Entra ID authorities (and therefore the STSURL in FEDAUTHINFO) are always absolute HTTPS URLs, and both MSAL's WithAuthority and Azure.Identity's AuthorityHost require an absolute URI, so the legacy last-separator split could never produce a working credential for anything else. Replace the fallback with TryParseAuthority, which rejects such authorities up front with a clear AuthenticationException instead of failing obscurely later. Also stop re-wrapping AuthenticationException in the generic catch block. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: b4e906c9-daf3-46f8-83e7-ef805d81fdfb * Rename authority locals and TokenCredentialKey fields for clarity Address review feedback: - The 'audience' local no longer held the last path segment after the parsing fix; it holds the tenant that is passed to Azure.Identity as TenantId. Rename the locals and the TokenCredentialKey fields to authorityHost/tenant so the names match what they carry, and refresh the surrounding comment accordingly. - Add a 'consumers' placeholder case to AuthorityParsingTests, which the TryParseAuthority documentation already calls out. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: b4e906c9-daf3-46f8-83e7-ef805d81fdfb * Use Uri.Segments to extract the tenant Address review feedback: let the Uri class handle URI decomposition instead of doing string manipulation on AbsolutePath. Segments[0] is always the leading "/", so the tenant is Segments[1]. Segments retain their trailing separator when further segments follow, so the value is trimmed. The non-empty check is kept to reject an empty leading segment (e.g. "https://host//oauth2/authorize"), which would otherwise yield an authority with no tenant; a test covers this. Also fix a "DefaultAzureCredenial" typo in a comment touched by the previous commit. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: b4e906c9-daf3-46f8-83e7-ef805d81fdfb * Normalize the password cache key and cover the remaining gaps Address review feedback: - GetAccountPwCacheKey keyed on the raw parameters.Authority, so two STSURL spellings of the same tenant produced separate password-cache entries. It now takes the normalized authority, consistent with the rest of this change. The userId parameter is nullable to preserve the previous concatenation behavior. - Add a test asserting AcquireTokenAsync surfaces the authority AuthenticationException unwrapped, so reordering the catch blocks can't silently regress it back to "Unexpected error". Verified the test fails when the pass-through catch is removed. - Add http:// cases to the rejection theory so the HTTPS requirement is pinned by a test, and rename the theory accordingly. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: b4e906c9-daf3-46f8-83e7-ef805d81fdfb --------- Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: b4e906c9-daf3-46f8-83e7-ef805d81fdfb
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cheenamalhotra
approved these changes
Aug 21, 2026
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Cherry-pick of #4521 (89ceebc) into
release/7.0.