49 lines
1.6 KiB
Bash
49 lines
1.6 KiB
Bash
#!/bin/sh
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VALID_CREDS_FILE=custom-auth.valid
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CHALLENGE_FILE=custom-auth.challenge
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#
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# If $VALID_CREDS_FILE exists in $HTTPD_ROOT_PATH, consider each line as a valid
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# credential for the current request. Each line in the file is considered a
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# valid HTTP Authorization header value. For example:
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#
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# Basic YWxpY2U6c2VjcmV0LXBhc3N3ZA==
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#
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# If $CHALLENGE_FILE exists in $HTTPD_ROOT_PATH, output the contents as headers
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# in a 401 response if no valid authentication credentials were included in the
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# request. For example:
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#
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# WWW-Authenticate: Bearer authorize_uri="id.example.com" p=1 q=0
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# WWW-Authenticate: Basic realm="example.com"
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#
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if test -n "$HTTP_AUTHORIZATION" && \
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grep -Fqs "creds=${HTTP_AUTHORIZATION}" "$VALID_CREDS_FILE"
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then
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idno=$(grep -F "creds=${HTTP_AUTHORIZATION}" "$VALID_CREDS_FILE" | sed -e 's/^id=\([a-z0-9-][a-z0-9-]*\) .*$/\1/')
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status=$(sed -ne "s/^id=$idno.*status=\\([0-9][0-9][0-9]\\).*\$/\\1/p" "$CHALLENGE_FILE" | head -n1)
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# Note that although git-http-backend returns a status line, it
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# does so using a CGI 'Status' header. Because this script is an
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# No Parsed Headers (NPH) script, we must return a real HTTP
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# status line.
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# This is only a test script, so we don't bother to check for
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# the actual status from git-http-backend and always return 200.
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echo "HTTP/1.1 $status Nonspecific Reason Phrase"
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if test "$status" -eq 200
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then
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exec "$GIT_EXEC_PATH"/git-http-backend
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else
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sed -ne "s/^id=$idno.*response=//p" "$CHALLENGE_FILE"
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echo
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exit
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fi
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fi
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echo 'HTTP/1.1 401 Authorization Required'
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if test -f "$CHALLENGE_FILE"
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then
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sed -ne 's/^id=default.*response=//p' "$CHALLENGE_FILE"
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fi
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echo
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