Improve UX around certificate errors (#118)

fixtures/chain-intermediate.crt

@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

fixtures/chain-intermediate.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+F1SDXNNKT6Wg/XNKG9Pdow==
+-----END PRIVATE KEY-----

fixtures/chain-leaf.crt

@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----
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+395vKvYI
+-----END CERTIFICATE-----

fixtures/chain-leaf.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----

fixtures/chain-root.crt

@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

fixtures/chain-root.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----

fixtures/chain.crt

@@ -0,0 +1,56 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+XTWGWgXMVeacm/0W+3XmQWtltDnBQq8fUsEy0Uts6fJdD/5tEmvYfwEtpomxdFds
+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+O5mpOpR0Jkni8lJmOYrRYz9Jf9Cm0uQWlw==
+-----END CERTIFICATE-----

fixtures/chain.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCiLsCk5U0Xb0VS
+RaHJNd1q/X2aAgf7EPGi/4ul6XpZp8gT3iRu6sErsRc33JS2svKRN0eRMXduvTO3
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+i45lVy8xNJU85Fmzex0B0g==
+-----END PRIVATE KEY-----

fixtures/generate.bash

@@ -0,0 +1,134 @@
+#!/usr/bin/env bash
+
+set -xeuo pipefail
+
+function prepare() {
+ local cwd=$1
+ local fwd=$(readlink -f "$cwd")
+ mkdir -p "$cwd"/{certs,crl,newcerts,private}
+ echo 1000 > "$cwd/serial"
+ touch "$cwd"/{index.txt,index.txt.attr}
+
+ echo '
+ [ ca ]
+ default_ca = CA_default
+ [ CA_default ]
+ dir = '"$fwd"'
+ certs = $dir/certs # Where the issued certs are kept
+ crl_dir = $dir/crl # Where the issued crl are kept
+ database = $dir/index.txt # database index file.
+ new_certs_dir = $dir/newcerts # default place for new certs.
+ certificate = $dir/cacert.pem # The CA certificate
+ serial = $dir/serial # The current serial number
+ crl = $dir/crl.pem # The current CRL
+ private_key = $dir/private/ca.key.pem # The private key
+ RANDFILE = $dir/.rnd # private random number file
+ nameopt = default_ca
+ certopt = default_ca
+ policy = policy_match
+ default_days = 365
+ default_md = sha256
+
+ [ policy_match ]
+ countryName = optional
+ stateOrProvinceName = optional
+ organizationName = optional
+ organizationalUnitName = optional
+ commonName = supplied
+ emailAddress = optional
+
+ [req]
+ req_extensions = v3_req
+ distinguished_name = req_distinguished_name
+
+ [req_distinguished_name]
+
+ [v3_req]' > "$cwd/openssl.cnf"
+
+ if [[ $cwd == out ]] ; then
+ echo "keyUsage = digitalSignature, keyEncipherment" >> "$cwd/openssl.cnf"
+ echo "extendedKeyUsage = serverAuth, clientAuth" >> "$cwd/openssl.cnf"
+ echo "subjectAltName = DNS:localhost" >> "$cwd/openssl.cnf"
+ else
+ echo "basicConstraints = CA:TRUE" >> "$cwd/openssl.cnf"
+ fi
+}
+
+# chain generates three certificates in a chain.
+function chain() {
+ rm {root,intermediate,out} -rf
+ prepare root
+ prepare intermediate
+ prepare out
+
+ # Create root certificate and key.
+ openssl genrsa -out root/private/ca.key 2048
+ openssl req -new -x509 -sha256 -days 3650 \
+ -config root/openssl.cnf -extensions v3_req \
+ -key root/private/ca.key --out root/certs/ca.crt \
+ -subj '/CN=TEST-root'
+
+ # Create intermediate key and request.
+ openssl genrsa -out intermediate/private/intermediate.key 2048
+ openssl req -new -sha256 \
+ -config intermediate/openssl.cnf -extensions v3_req \
+ -key intermediate/private/intermediate.key -out intermediate/certs/intermediate.csr \
+ -subj '/CN=TEST-intermediate'
+
+ # Sign intermediate request with root to create a cert.
+ openssl ca -batch -notext -md sha256 \
+ -config intermediate/openssl.cnf -extensions v3_req \
+ -keyfile root/private/ca.key -cert root/certs/ca.crt \
+ -in intermediate/certs/intermediate.csr \
+ -out intermediate/certs/intermediate.crt
+
+ # Create a key and request for an end certificate.
+ openssl req -new -days 365 -nodes -newkey rsa:2048 \
+ -config out/openssl.cnf -extensions v3_req \
+ -keyout out/private/localhost.key -out out/certs/localhost.csr \
+ -subj "/CN=localhost"
+
+ # Sign that with the intermediate.
+ openssl ca -batch \
+ -config out/openssl.cnf -extensions v3_req \
+ -keyfile intermediate/private/intermediate.key -cert intermediate/certs/intermediate.crt \
+ -out out/certs/localhost.crt \
+ -infiles out/certs/localhost.csr
+
+ mv out/certs/localhost.crt chain-leaf.crt
+ mv out/private/localhost.key chain-leaf.key
+ mv intermediate/certs/intermediate.crt chain-intermediate.crt
+ mv intermediate/private/intermediate.key chain-intermediate.key
+ mv root/certs/ca.crt chain-root.crt
+ mv root/private/ca.key chain-root.key
+
+ rm {out,intermediate,root} -r
+
+ cat chain-leaf.crt chain-intermediate.crt chain-root.crt > chain.crt
+ cp chain-leaf.key chain.key
+}
+
+# non-signing generates a self-signed certificate that has cert signing
+# explicitly omitted.
+function non-signing() {
+ openssl req -x509 -nodes -newkey rsa:2048 \
+ -keyout no-signing.key -out no-signing.crt \
+ -addext "keyUsage = digitalSignature, keyEncipherment" \
+ -addext "subjectAltName=DNS:localhost" \
+ -subj "/CN=localhost"
+}
+
+# self-signed generates a certificate without specifying key usage.
+function self-signed() {
+ openssl req -x509 -nodes -newkey rsa:2048 \
+ -keyout self-signed.key -out self-signed.crt \
+ -addext "subjectAltName=DNS:localhost" \
+ -subj "/CN=localhost"
+}
+
+function main() {
+ local name=$1 ; shift
+ "$name" "$@"
+}
+
+main "$@"

fixtures/no-signing.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
+MIIDLDCCAhSgAwIBAgIUZVpY6+MUJZuW/UJhu7r8crizzh0wDQYJKoZIhvcNAQEL
+BQAwFDESMBAGA1UEAwwJbG9jYWxob3N0MB4XDTIzMDgwMTAxMDQ0OFoXDTIzMDgz
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+s1sGtEpSUwhNiMEypJJbDhDJ6S5pn9lqDbSoCiRjXufq3ltu90Zht+2kCUCjTSBb
+-----END CERTIFICATE-----