Ankur Mhatre
e9381dc5be
Three modules on Spring Boot 4.1.1 with Spring Authorization Server 7.1.1: the provider
itself, a relying party, and an API that trusts its tokens. Client registration, PKCE,
a custom consent page and token customisation, with profiles that make each failure
reproducible.
Every claim is backed by captured output in docs/output/as-*.txt, regenerated by
authorization-server/scripts/run-all.sh. Notable findings, verified against the jars:
- OAuth2AuthorizationServerConfiguration.applyDefaultSecurity(HttpSecurity) was deleted
in 7.0, and both configuration classes moved into spring-security-config
- ClientSettings.requireProofKey flipped from false to true, on the authorization server
(1.5.8 -> 7.1.1) and on the OAuth2 client (6.5.1 -> 7.1.1)
- requireProofKey(false) does not make PKCE optional for a public client; the code
verifier is that client's only authentication at the token endpoint
- MediaTypeRequestMatcher(TEXT_HTML) matches Accept: */*, so the token endpoint answers
API callers with 302 -> /login unless setIgnoredMediaTypes(ALL) is called
Also renames the repository to spring-auth-demo and cross-links the new chapter set from
the existing documentation.
36 lines
1.6 KiB
Bash
Executable File
36 lines
1.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# The gap between "the signature is valid" and "this token was meant for me".
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set -u
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cd "$(dirname "$0")/.."
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. scripts/lib.sh
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OUT=../docs/output/as-audience.txt
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mkdir -p ../docs/output
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{
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section "A token for a DIFFERENT audience, signed by the SAME issuer"
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echo "demo-service's tokens carry aud=[orders-api] thanks to the token customiser."
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echo "Here we ask for one and then present it to a resource server configured to"
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echo "require a different audience - and to one that does not check at all."
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TOKEN=$(curl -s -u demo-service:service-secret -d grant_type=client_credentials \
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-d scope=orders.read "$AS/oauth2/token" \
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| python3 -c 'import sys,json;print(json.load(sys.stdin).get("access_token",""))')
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echo
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echo "aud claim in the token:"
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jwt_payload "$TOKEN" | grep -A3 '"aud"'
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section "Resource server running with demo.validate-audience=false"
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echo "This is the Spring Boot default: issuer-uri alone validates signature, exp/nbf"
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echo "and iss. Audience is not checked unless you add a validator."
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curl -s -o /tmp/b -w 'GET /api/orders -> %{http_code}\n' -H "Authorization: Bearer $TOKEN" "$RS/api/orders"
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head -c 300 /tmp/b; echo
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section "The same token with a deliberately mangled signature"
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BAD="${TOKEN%?}X"
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curl -s -D - -o /dev/null -H "Authorization: Bearer $BAD" "$RS/api/orders" \
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| sed -n '1p;/^WWW-Authenticate/p'
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section "No token at all"
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curl -s -D - -o /dev/null "$RS/api/orders" | sed -n '1p;/^WWW-Authenticate/p'
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} > "$OUT" 2>&1
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sed -i 's/[[:space:]]*$//' "$OUT"
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echo "wrote $OUT"
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