Create ntlm_http_pkg.get_response_blob
Added a function to ntlm_http_pkg to retrieve the URL as a BLOB.
This commit is contained in:
Eric Olson
parent
bd6e9d27b5
commit
9c8dceb985
@ -51,6 +51,230 @@ begin
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end headers_contain_value;
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function get_response_blob (p_url in varchar2,
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p_username in varchar2,
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p_password in varchar2,
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p_wallet_path in varchar2 := null,
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p_wallet_password in varchar2 := null,
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p_proxy_server in varchar2 := null) return blob
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as
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l_req utl_http.req;
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l_resp utl_http.resp;
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l_returnvalue blob;
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l_authenticate_with_ntlm boolean;
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l_name varchar2(500);
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l_value varchar2(500);
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l_ntlm_message varchar2(500);
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l_negotiate_message varchar2(500);
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l_server_challenge raw(4000);
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l_negotiate_flags raw(4000);
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l_authenticate_message varchar2(500);
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function get_response_body (p_resp in out utl_http.resp) return blob
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as
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l_data raw(32767);
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l_returnvalue blob;
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begin
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/*
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Purpose: get the response body as a blob
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Remarks:
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Who Date Description
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------ ---------- --------------------------------
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MBR 24.06.2011 Created
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*/
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dbms_lob.createtemporary( l_returnvalue, true );
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begin
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loop
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utl_http.read_raw(r => p_resp, data => l_data);
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dbms_lob.append( l_returnvalue, to_blob( l_data ));
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end loop;
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exception
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when utl_http.end_of_body then
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null;
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end;
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return l_returnvalue;
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end get_response_body;
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procedure debug_response (p_resp in out utl_http.resp)
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as
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l_name varchar2(255);
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l_value varchar2(2000);
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l_body blob;
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begin
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/*
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Purpose: print debug info about the response
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Remarks:
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Who Date Description
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------ ---------- --------------------------------
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MBR 24.06.2011 Created
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*/
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debug_pkg.printf('Response Status Code: %1', p_resp.status_code);
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for i in 1 .. utl_http.get_header_count (p_resp) loop
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utl_http.get_header (p_resp, i, l_name, l_value);
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debug_pkg.printf('#%1 %2 : %3', i, l_name, l_value);
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end loop;
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l_returnvalue := get_response_body (p_resp);
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debug_pkg.printf('Body length = %1', dbms_lob.getlength (l_returnvalue));
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debug_pkg.printf('Persistent connection count: %1', utl_http.get_persistent_conn_count);
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end debug_response;
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begin
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/*
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Purpose: Get response clob from URL
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Remarks: see http://davenport.sourceforge.net/ntlm.html#ntlmHttpAuthentication
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Who Date Description
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------ ---------- --------------------------------
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FDL 11.05.2011 Created
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MBR 03.06.2011 Lots of changes
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*/
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utl_http.set_detailed_excp_support (enable => true);
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utl_http.set_response_error_check (false);
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utl_http.set_persistent_conn_support (true, 10);
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debug_pkg.printf('Persistent connection count: %1', utl_http.get_persistent_conn_count);
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-- support for HTTPS
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if instr(lower(p_url),'https') = 1 then
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utl_http.set_wallet (p_wallet_path, p_wallet_password);
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end if;
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-- support for proxy server
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if p_proxy_server is not null then
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utl_http.set_proxy (p_proxy_server);
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end if;
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------------
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-- Request 1
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------------
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debug_pkg.printf(' ');
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debug_pkg.printf(p_url);
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l_req := utl_http.begin_request(p_url);
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l_resp := utl_http.get_response (l_req);
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debug_response (l_resp);
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if l_resp.status_code = utl_http.HTTP_UNAUTHORIZED then
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l_authenticate_with_ntlm := headers_contain_value (l_resp, 'WWW-Authenticate', 'NTLM');
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utl_http.end_response (l_resp);
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if l_authenticate_with_ntlm then
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l_negotiate_message := 'NTLM ' || ntlm_util_pkg.get_negotiate_message(p_username);
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-- need to send negotiation message
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debug_pkg.printf('Negotiate message: %1', l_negotiate_message);
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------------
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-- Request 2
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------------
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debug_pkg.printf(' ');
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debug_pkg.printf(p_url);
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l_req := utl_http.begin_request(p_url);
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utl_http.set_header (l_req, 'Authorization', l_negotiate_message);
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l_resp := utl_http.get_response(l_req);
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debug_response (l_resp);
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if l_resp.status_code = utl_http.HTTP_UNAUTHORIZED then
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-- received server challenge
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utl_http.get_header_by_name(l_resp, 'WWW-Authenticate', l_value, 1);
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utl_http.end_response(l_resp);
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if substr(l_value, 1, 4) = 'NTLM' then
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-- get value
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l_value := substr(l_value, 6);
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ntlm_util_pkg.parse_challenge_message (l_value, l_server_challenge, l_negotiate_flags);
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l_authenticate_message := 'NTLM ' || ntlm_util_pkg.get_authenticate_message(p_username, p_password, l_server_challenge, l_negotiate_flags);
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debug_pkg.printf('Authenticate message: "%1"', l_authenticate_message);
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------------
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-- Request 3
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------------
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-- sending NTLM message 3
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debug_pkg.printf(' ');
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debug_pkg.printf(p_url);
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l_req := utl_http.begin_request(p_url);
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utl_http.set_header (l_req, 'Connection', 'close');
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utl_http.set_header (l_req, 'Authorization', l_authenticate_message);
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l_resp := utl_http.get_response (l_req);
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debug_response (l_resp);
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-- this is already done inside debug_response
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--l_returnvalue := get_response_body (l_resp);
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utl_http.end_response(l_resp);
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end if;
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end if;
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else
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debug_pkg.printf('Server is not configured with NTLM security (missing "WWW-Authenticate: NTLM" header).');
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end if;
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end if;
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utl_http.close_persistent_conns;
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debug_pkg.printf('Persistent connection count (should be zero): %1', utl_http.get_persistent_conn_count);
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return l_returnvalue;
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end get_response_blob;
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function get_response_clob (p_url in varchar2,
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p_username in varchar2,
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p_password in varchar2,
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@ -17,6 +17,14 @@ as
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*/
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-- get blob from url
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function get_response_blob (p_url in varchar2,
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p_username in varchar2,
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p_password in varchar2,
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p_wallet_path in varchar2 := null,
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p_wallet_password in varchar2 := null,
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p_proxy_server in varchar2 := null) return blob;
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-- get clob from url
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function get_response_clob (p_url in varchar2,
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p_username in varchar2,
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