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<h1>utils.rb</h1>
<table class="header-table">
<tr class="top-aligned-row">
<td><strong>Path:</strong></td>
<td>lib/rack/utils.rb
</td>
</tr>
<tr class="top-aligned-row">
<td><strong>Last Update:</strong></td>
<td>Thu Dec 05 17:13:57 -0500 2019</td>
</tr>
</table>
</div>
<!-- banner header -->
<div id="bodyContent">
<div id="contextContent">
<div id="requires-list">
<h3 class="section-bar">Required files</h3>
<div class="name-list">
fileutils
set
tempfile
rack/multipart
time
rack/backports/uri/common_18
rack/backports/uri/common_192
rack/backports/uri/common_193
uri/common
</div>
</div>
</div>
<div id="method-list">
<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000006">best_q_match</a>
<a href="#M000004">build_nested_query</a>
<a href="#M000003">build_query</a>
<a href="#M000015">byte_ranges</a>
<a href="#M000012">bytesize</a>
<a href="#M000011">bytesize</a>
<a href="#M000018">clean_path_info</a>
<a href="#M000010">delete_cookie_header!</a>
<a href="#M000007">escape_html</a>
<a href="#M000001">normalize_params</a>
<a href="#M000002">params_hash_type?</a>
<a href="#M000005">q_values</a>
<a href="#M000014">rfc2109</a>
<a href="#M000013">rfc2822</a>
<a href="#M000016">secure_compare</a>
<a href="#M000008">select_best_encoding</a>
<a href="#M000009">set_cookie_header!</a>
<a href="#M000017">status_code</a>
</div>
</div>
</div>
<!-- if includes -->
<div id="section">
<div id="constants-list">
<h3 class="section-bar">Constants</h3>
<div class="name-list">
<table summary="Constants">
<tr class="top-aligned-row context-row">
<td class="context-item-name">ESCAPE_HTML</td>
<td>=</td>
<td class="context-item-value">{ "&" => "&amp;", "<" => "&lt;", ">" => "&gt;", "'" => "&#x27;", '"' => "&quot;", "/" => "&#x2F;"</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">ESCAPE_HTML_PATTERN</td>
<td>=</td>
<td class="context-item-value">Regexp.union(*ESCAPE_HTML.keys)</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">ESCAPE_HTML_PATTERN</td>
<td>=</td>
<td class="context-item-value">/#{Regexp.union(*ESCAPE_HTML.keys)}/n</td>
<td width="3em"> </td>
<td class="context-item-desc">
On 1.8, there is a kcode = ‘u’ bug that allows for XSS
otherwise TODO doesn‘t apply to jruby, so a better condition above
might be preferable?
</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">HTTP_STATUS_CODES</td>
<td>=</td>
<td class="context-item-value">{ 100 => 'Continue', 101 => 'Switching Protocols', 102 => 'Processing', 200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content', 207 => 'Multi-Status', 208 => 'Already Reported', 226 => 'IM Used', 300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 307 => 'Temporary Redirect', 308 => 'Permanent Redirect', 400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Timeout', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Payload Too Large', 414 => 'URI Too Long', 415 => 'Unsupported Media Type', 416 => 'Range Not Satisfiable', 417 => 'Expectation Failed', 422 => 'Unprocessable Entity', 423 => 'Locked', 424 => 'Failed Dependency', 426 => 'Upgrade Required', 428 => 'Precondition Required', 429 => 'Too Many Requests', 431 => 'Request Header Fields Too Large', 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Timeout', 505 => 'HTTP Version Not Supported', 506 => 'Variant Also Negotiates', 507 => 'Insufficient Storage', 508 => 'Loop Detected', 510 => 'Not Extended', 511 => 'Network Authentication Required'</td>
<td width="3em"> </td>
<td class="context-item-desc">
Every standard HTTP code mapped to the appropriate message. Generated with:
curl -s <a
href="https://www.iana.org/assignments/http-status-codes/http-status-codes-1.csv">www.iana.org/assignments/http-status-codes/http-status-codes-1.csv</a>
| # ruby -ne ‘m =
/^(\d{3}),(?!Unassigned|\(Unused\))([^,]+)/.match($_) and # puts
"#{m[1]} => \x27#{m[2].strip}\x27,"’
</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">STATUS_WITH_NO_ENTITY_BODY</td>
<td>=</td>
<td class="context-item-value">Set.new((100..199).to_a << 204 << 205 << 304)</td>
<td width="3em"> </td>
<td class="context-item-desc">
Responses with HTTP status codes that should not have an entity body
</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">SYMBOL_TO_STATUS_CODE</td>
<td>=</td>
<td class="context-item-value">Hash[*HTTP_STATUS_CODES.map { |code, message| [message.downcase.gsub(/\s|-|'/, '_').to_sym, code]</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">Multipart</td>
<td>=</td>
<td class="context-item-value">Rack::Multipart</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">PATH_SEPS</td>
<td>=</td>
<td class="context-item-value">Regexp.union(*[::File::SEPARATOR, ::File::ALT_SEPARATOR].compact)</td>
</tr>
</table>
</div>
</div>
<!-- if method_list -->
<div id="methods">
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000006" class="method-detail">
<a name="M000006"></a>
<div class="method-heading">
<a href="utils_rb.src/M000006.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000006.html');return false;">
<span class="method-name">best_q_match</span><span class="method-args">(q_value_header, available_mimes)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000004" class="method-detail">
<a name="M000004"></a>
<div class="method-heading">
<a href="utils_rb.src/M000004.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000004.html');return false;">
<span class="method-name">build_nested_query</span><span class="method-args">(value, prefix = nil)</span>
</a>
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<div class="method-description">
</div>
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<a name="M000003"></a>
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<a href="utils_rb.src/M000003.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000003.html');return false;">
<span class="method-name">build_query</span><span class="method-args">(params)</span>
</a>
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</div>
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onclick="popupCode('utils_rb.src/M000015.html');return false;">
<span class="method-name">byte_ranges</span><span class="method-args">(env, size)</span>
</a>
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<div class="method-description">
<p>
Parses the "Range:" header, if present, into an array of Range
objects. Returns nil if the header is missing or syntactically invalid.
Returns an empty array if none of the ranges are satisfiable.
</p>
</div>
</div>
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<a href="utils_rb.src/M000012.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000012.html');return false;">
<span class="method-name">bytesize</span><span class="method-args">(string)</span>
</a>
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<div class="method-description">
</div>
</div>
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<a name="M000011"></a>
<div class="method-heading">
<a href="utils_rb.src/M000011.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000011.html');return false;">
<span class="method-name">bytesize</span><span class="method-args">(string)</span>
</a>
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<div class="method-description">
</div>
</div>
<div id="method-M000018" class="method-detail">
<a name="M000018"></a>
<div class="method-heading">
<a href="utils_rb.src/M000018.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000018.html');return false;">
<span class="method-name">clean_path_info</span><span class="method-args">(path_info)</span>
</a>
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<div class="method-description">
</div>
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<a name="M000010"></a>
<div class="method-heading">
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onclick="popupCode('utils_rb.src/M000010.html');return false;">
<span class="method-name">delete_cookie_header!</span><span class="method-args">(header, key, value = {})</span>
</a>
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<div class="method-description">
</div>
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<a name="M000007"></a>
<div class="method-heading">
<a href="utils_rb.src/M000007.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000007.html');return false;">
<span class="method-name">escape_html</span><span class="method-args">(string)</span>
</a>
</div>
<div class="method-description">
<p>
Escape ampersands, brackets and quotes to their HTML/XML entities.
</p>
</div>
</div>
<div id="method-M000001" class="method-detail">
<a name="M000001"></a>
<div class="method-heading">
<a href="utils_rb.src/M000001.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000001.html');return false;">
<span class="method-name">normalize_params</span><span class="method-args">(params, name, v = nil)</span>
</a>
</div>
<div class="method-description">
<p>
<a href="utils_rb.html#M000001">normalize_params</a> recursively expands
parameters into structural types. If the structural types represented by
two different parameter names are in conflict, a ParameterTypeError is
raised.
</p>
</div>
</div>
<div id="method-M000002" class="method-detail">
<a name="M000002"></a>
<div class="method-heading">
<a href="utils_rb.src/M000002.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000002.html');return false;">
<span class="method-name">params_hash_type?</span><span class="method-args">(obj)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000005" class="method-detail">
<a name="M000005"></a>
<div class="method-heading">
<a href="utils_rb.src/M000005.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000005.html');return false;">
<span class="method-name">q_values</span><span class="method-args">(q_value_header)</span>
</a>
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<div class="method-description">
</div>
</div>
<div id="method-M000014" class="method-detail">
<a name="M000014"></a>
<div class="method-heading">
<a href="utils_rb.src/M000014.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000014.html');return false;">
<span class="method-name">rfc2109</span><span class="method-args">(time)</span>
</a>
</div>
<div class="method-description">
<p>
Modified version of stdlib time.rb Time#rfc2822 to use
’%d-%b-%Y’ instead of ’% %b %Y’. It assumes that
the time is in GMT to comply to the RFC 2109.
</p>
<p>
NOTE: I‘m not sure the RFC says it requires GMT, but is ambiguous
enough that I‘m certain someone implemented only that option. Do not
use %a and %b from Time.strptime, it would use localized names for weekday
and month.
</p>
</div>
</div>
<div id="method-M000013" class="method-detail">
<a name="M000013"></a>
<div class="method-heading">
<a href="utils_rb.src/M000013.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000013.html');return false;">
<span class="method-name">rfc2822</span><span class="method-args">(time)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000016" class="method-detail">
<a name="M000016"></a>
<div class="method-heading">
<a href="utils_rb.src/M000016.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000016.html');return false;">
<span class="method-name">secure_compare</span><span class="method-args">(a, b)</span>
</a>
</div>
<div class="method-description">
<p>
Constant time string comparison.
</p>
<p>
NOTE: the values compared should be of fixed length, such as strings that
have already been processed by HMAC. This should not be used on variable
length plaintext strings because it could leak length info via timing
attacks.
</p>
</div>
</div>
<div id="method-M000008" class="method-detail">
<a name="M000008"></a>
<div class="method-heading">
<a href="utils_rb.src/M000008.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000008.html');return false;">
<span class="method-name">select_best_encoding</span><span class="method-args">(available_encodings, accept_encoding)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000009" class="method-detail">
<a name="M000009"></a>
<div class="method-heading">
<a href="utils_rb.src/M000009.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000009.html');return false;">
<span class="method-name">set_cookie_header!</span><span class="method-args">(header, key, value)</span>
</a>
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</div>
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<div id="method-M000017" class="method-detail">
<a name="M000017"></a>
<div class="method-heading">
<a href="utils_rb.src/M000017.html" target="Code" class="method-signature"
onclick="popupCode('utils_rb.src/M000017.html');return false;">
<span class="method-name">status_code</span><span class="method-args">(status)</span>
</a>
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<div class="method-description">
</div>
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