#include <ConfigParser.h>

Collaboration diagram for ConfigParser:

[legend]

Classes
class	CfgFile

Public Types
enum	TokenType { SimpleToken , QuotedToken , FunctionParameters }

Public Member Functions
void	destruct ()

void	closeDirective ()
	stops parsing the current configuration directive More...

void	rejectDuplicateDirective ()
	rejects configuration due to a repeated directive More...

SBuf	token (const char *expectedTokenDescription)
	extracts and returns a required token More...

bool	optionalKvPair (char &key, char &value)

bool	skipOptional (const char *keyword)
	either extracts the given (optional) token or returns false More...

Acl::Tree *	optionalAclList ()
	parses an [if [!]<acl>...] construct More...

std::unique_ptr< RegexPattern >	regex (const char *expectedRegexDescription)
	extracts and returns a regex (including any optional flags) More...

CachePeer &	cachePeer (const char *peerNameTokenDescription)
	extracts a cache_peer name token and returns the corresponding CachePeer More...

Static Public Member Functions
static void	ParseUShort (unsigned short *var)

static void	ParseBool (bool *var)

static const char *	QuoteString (const String &var)

static void	ParseWordList (wordlist **list)

static char *	strtokFile ()

static char *	NextToken ()

static char *	RegexStrtokFile ()

static char *	NextQuotedToken ()

static bool	LastTokenWasQuoted ()

static char *	NextQuotedOrToEol ()

static bool	NextKvPair (char &key, char &value)

static char *	PeekAtToken ()

static void	SetCfgLine (char *line)
	Set the configuration file line to parse. More...

static void	EnableMacros ()
	Allow macros inside quoted strings. More...

static void	DisableMacros ()
	Do not allow macros inside quoted strings. More...

static SBuf	CurrentLocation ()

Static Public Attributes
static bool	RecognizeQuotedValues = true
	configuration_includes_quoted_values in squid.conf More...

static bool	StrictMode = true

Protected Types
enum	ParsingStates { atParseKey , atParseValue }

Static Protected Member Functions
static char *	UnQuote (const char token, const char *next=nullptr)

static char *	TokenParse (const char *&nextToken, TokenType &type)

static char *	NextElement (TokenType &type)
	Wrapper method for TokenParse. More...

Static Protected Attributes
static std::stack< CfgFile * >	CfgFiles
	The stack of open cfg files. More...

static TokenType	LastTokenType = ConfigParser::SimpleToken
	The type of last parsed element. More...

static const char *	CfgLine = nullptr
	The current line to parse. More...

static const char *	CfgPos = nullptr
	Pointer to the next element in cfgLine string. More...

static std::queue< char * >	CfgLineTokens_
	Store the list of tokens for current configuration line. More...

static bool	AllowMacros_ = false

static bool	ParseQuotedOrToEol_ = false
	The next tokens will be handled as quoted or to_eol token. More...

static bool	RecognizeQuotedPair_ = false
	The next tokens may contain quoted-pair (-escaped) characters. More...

static bool	PreviewMode_ = false
	The next token will not popped from cfg files, will just previewd. More...

static bool	ParseKvPair_ = false
	The next token will be handled as kv-pair token. More...

static enum ConfigParser::ParsingStates	KvPairState_ = ConfigParser::atParseKey
	Parsing state while parsing kv-pair tokens. More...

Detailed Description

A configuration file Parser. Instances of this class track parsing state and perform tokenisation. Syntax is currently taken care of outside this class.

One reason for this class is to allow testing of configuration using modules without linking cache_cf.o in - because that drags in all of squid by reference. Instead the tokeniser only is brought in.

Definition at line 45 of file ConfigParser.h.

Member Enumeration Documentation

◆ ParsingStates

enum ConfigParser::ParsingStates

protected

Enumerator
atParseKey
atParseValue

Definition at line 232 of file ConfigParser.h.

◆ TokenType

enum ConfigParser::TokenType

Parsed tokens type: simple tokens, quoted tokens or function like parameters.

Enumerator
SimpleToken
QuotedToken
FunctionParameters

Definition at line 53 of file ConfigParser.h.

Member Function Documentation

◆ cachePeer()

CachePeer & ConfigParser::cachePeer ( const char * peerNameTokenDescription )

Definition at line 508 of file ConfigParser.cc.

References CurrentLocation(), debugs, findCachePeerByName(), Here, NextToken(), and ToSBuf().

Referenced by parse_hostdomaintype(), and parse_peer_access().

◆ closeDirective()

void ConfigParser::closeDirective ( )

Definition at line 565 of file ConfigParser.cc.

References assert, cfg_directive, Here, PeekAtToken(), and ToSBuf().

Referenced by ParseDirective().

◆ CurrentLocation()

SBuf ConfigParser::CurrentLocation ( )

static

Definition at line 216 of file ConfigParser.cc.

References cfg_directive, cfg_filename, config_lineno, and ToSBuf().

Referenced by aclParseDenyInfoLine(), cachePeer(), parseOneConfigFile(), parseTimeLine(), ParseUrlRewriteTimeout(), and token().

◆ destruct()

void ConfigParser::destruct ( )

Definition at line 38 of file ConfigParser.cc.

References cfg_filename, CfgFiles, config_input_line, config_lineno, ConfigParser::CfgFile::currentLine, fatalf(), ConfigParser::CfgFile::filePath, ConfigParser::CfgFile::lineNo, and shutting_down.

Referenced by ACL::ParseAclLine(), and self_destruct().

◆ DisableMacros()

static void ConfigParser::DisableMacros ( )

inlinestatic

Definition at line 147 of file ConfigParser.h.

References AllowMacros_.

Referenced by Notes::parse(), parse_externalAclHelper(), parse_HeaderWithAclList(), and Log::LogConfig::parseFormats().

◆ EnableMacros()

static void ConfigParser::EnableMacros ( )

inlinestatic

Definition at line 144 of file ConfigParser.h.

References AllowMacros_.

Referenced by Notes::parse(), parse_externalAclHelper(), parse_HeaderWithAclList(), and Log::LogConfig::parseFormats().

◆ LastTokenWasQuoted()

static bool ConfigParser::LastTokenWasQuoted ( )

inlinestatic

Returns: true if the last parsed token was quoted

Definition at line 117 of file ConfigParser.h.

References LastTokenType, and QuotedToken.

Referenced by Notes::parse(), parse_AuthSchemes(), parse_HeaderWithAclList(), and Notes::parseKvPair().

◆ NextElement()

char * ConfigParser::NextElement ( ConfigParser::TokenType & type )

staticprotected

Definition at line 318 of file ConfigParser.cc.

References CfgPos, FunctionParameters, PreviewMode_, token(), and TokenParse().

Referenced by NextToken(), and strtokFile().

◆ NextKvPair()

bool ConfigParser::NextKvPair	(	char *&	key,
		char *&	value
	)

static

the next key value pair which must be separated by "="

Returns: true on success, false otherwise

Definition at line 448 of file ConfigParser.cc.

References atParseKey, atParseValue, DBG_CRITICAL, debugs, KvPairState_, NextQuotedToken(), NextToken(), and ParseKvPair_.

Referenced by Acl::OptionExtractor::advance(), optionalKvPair(), parse_cache_log_message(), parse_UrlHelperTimeout(), Notes::parseKvPair(), and MessageDelayConfig::parseResponseDelayPool().

◆ NextQuotedOrToEol()

char * ConfigParser::NextQuotedOrToEol ( )

static

Returns: the next quoted string or the raw string data until the end of line. This method allows macros in unquoted strings to keep compatibility for the logformat option.

Definition at line 404 of file ConfigParser.cc.

References CfgFiles, NextToken(), ParseQuotedOrToEol_, and token().

Referenced by IcmpConfig::parse(), Auth::SchemeConfig::parse(), parse_eol(), parse_http_header_replace(), parse_obsolete(), Format::FmtConfig::parseFormats(), and Log::LogConfig::parseFormats().

◆ NextQuotedToken()

char * ConfigParser::NextQuotedToken ( )

static

Parse the next token with support for quoted values enabled even if the configuration_includes_quoted_values is set to off

Definition at line 524 of file ConfigParser.cc.

References NextToken(), RecognizeQuotedValues, and token().

Referenced by NextKvPair(), Notes::parse(), Auth::SchemeConfig::parse(), parse_AuthSchemes(), parse_cachemgrpasswd(), parse_HeaderWithAclList(), parse_SBufList(), parse_TokenOrQuotedString(), and parse_wordlist().

◆ NextToken()

char * ConfigParser::NextToken ( )

static

Returns the body of the next element. The element is either a token or a quoted string with optional escape sequences and/or macros. The body of a quoted string element does not include quotes or escape sequences. Future code will want to see Elements and not just their bodies.

Definition at line 333 of file ConfigParser.cc.

References assert, CfgFiles, DBG_CRITICAL, debugs, ConfigParser::CfgFile::filePath, FunctionParameters, ConfigParser::CfgFile::isOpen(), LastTokenType, NextElement(), NextToken(), ConfigParser::CfgFile::parse(), PreviewMode_, QuotedToken, self_destruct(), SimpleToken, ConfigParser::CfgFile::startParse(), and token().

Referenced by aclParseAccessLine(), aclParseDenyInfoLine(), Acl::OptionExtractor::advance(), cachePeer(), HttpUpgradeProtocolAccess::configureGuard(), TestConfigParser::doParseQuotedTest(), GetInteger(), GetInteger64(), GetPercentage(), GetService(), GetShort(), NextKvPair(), NextQuotedOrToEol(), NextQuotedToken(), NextToken(), Adaptation::ServiceConfig::parse(), Adaptation::ServiceGroup::parse(), DelaySpec::parse(), Notes::parse(), Store::Disks::Parse(), parse_access_log(), parse_acl_tos(), parse_address(), parse_authparam(), parse_CpuAffinityMap(), parse_externalAclHelper(), parse_ftp_epsv(), parse_HeaderWithAclList(), parse_hostdomaintype(), parse_http_header_access(), parse_http_header_replace(), parse_icap_service_failure_limit(), parse_IpAddress_list(), parse_memcachemode(), parse_on_unsupported_protocol(), parse_onoff(), parse_peer(), parse_pipelinePrefetch(), parse_refreshpattern(), parse_securePeerOptions(), parse_sslproxy_cert_adapt(), parse_sslproxy_cert_sign(), parse_sslproxy_ssl_bump(), parse_string(), parse_tristate(), parse_uri_whitespace(), parse_wccp2_amethod(), parse_wccp2_method(), parse_wccp2_service(), parse_wccp2_service_info(), Adaptation::Config::ParseAccess(), ACL::ParseAclLine(), parseBytesLine(), parseBytesLine64(), parseBytesLineSigned(), Helper::ChildConfig::parseConfig(), Ip::Qos::Config::parseConfigLine(), Format::FmtConfig::parseFormats(), Log::LogConfig::parseFormats(), Store::Disk::parseOptions(), parsePortCfg(), MessageDelayConfig::parseResponseDelayPool(), MessageDelayConfig::parseResponseDelayPoolAccess(), parseTimeLine(), ParseUrlRewriteTimeout(), PeekAtToken(), skipOptional(), strtokFile(), and token().

◆ optionalAclList()

Acl::Tree * ConfigParser::optionalAclList ( )

Definition at line 598 of file ConfigParser.cc.

References aclParseAclList(), assert, cfg_directive, Here, and skipOptional().

Referenced by Security::KeyLog::KeyLog().

◆ optionalKvPair()

bool ConfigParser::optionalKvPair	(	char *&	key,
		char *&	value
	)

extracts an optional key=value token or returns false rejects configurations with empty keys or empty values key and value have lifetime of the current line/directive

Definition at line 422 of file ConfigParser.cc.

References Here, NextKvPair(), PeekAtToken(), and ToSBuf().

Referenced by FormattedLog::parseOptions().

◆ ParseBool()

void ConfigParser::ParseBool ( bool * var )

static

Definition at line 3108 of file cache_cf.cc.

References GetInteger(), and self_destruct().

◆ ParseUShort()

void ConfigParser::ParseUShort ( unsigned short * var )

static

Definition at line 3102 of file cache_cf.cc.

References GetShort().

Referenced by parse_u_short(), DelayConfig::parsePoolAccess(), DelayConfig::parsePoolClass(), ClientDelayConfig::parsePoolCount(), DelayConfig::parsePoolCount(), ClientDelayConfig::parsePoolId(), and DelayConfig::parsePoolRates().

◆ ParseWordList()

void ConfigParser::ParseWordList ( wordlist ** list )

static

Definition at line 3130 of file cache_cf.cc.

References parse_wordlist().

Referenced by Adaptation::ServiceGroup::parse().

◆ PeekAtToken()

char * ConfigParser::PeekAtToken ( )

static

Preview the next token. The next NextToken() and strtokFile() call will return the same token. On parse error (eg invalid characters in token) will return an error message as token.

Definition at line 395 of file ConfigParser.cc.

References NextToken(), PreviewMode_, and token().

Referenced by Acl::OptionExtractor::advance(), closeDirective(), optionalKvPair(), ACLAnnotationData::parse(), parse_access_log(), parse_ftp_epsv(), parse_pipelinePrefetch(), parseTimeLine(), ParseUrlRewriteTimeout(), and skipOptional().

◆ QuoteString()

const char * ConfigParser::QuoteString ( const String & var )

static

Definition at line 534 of file ConfigParser.cc.

References String::append(), String::clean(), and String::termedBuf().

Referenced by TestConfigParser::doParseQuotedTest(), and Note::dump().

◆ regex()

std::unique_ptr< RegexPattern > ConfigParser::regex ( const char * expectedRegexDescription )

Definition at line 483 of file ConfigParser.cc.

References Here, RecognizeQuotedPair_, RecognizeQuotedValues, and token().

Referenced by parse_refreshpattern().

◆ RegexStrtokFile()

char * ConfigParser::RegexStrtokFile ( )

static

Backward compatibility wrapper for ConfigParser::RegexPattern method. If the configuration_includes_quoted_values configuration parameter is set to 'off' this interprets the quoted tokens as filenames.

Definition at line 470 of file ConfigParser.cc.

References DBG_CRITICAL, debugs, RecognizeQuotedPair_, RecognizeQuotedValues, self_destruct(), strtokFile(), and token().

Referenced by ACLRegexData::parse().

◆ rejectDuplicateDirective()

void ConfigParser::rejectDuplicateDirective ( )

Definition at line 558 of file ConfigParser.cc.

References assert, cfg_directive, and Here.

Referenced by ParseDirective().

◆ SetCfgLine()

void ConfigParser::SetCfgLine ( char * line )

static

Definition at line 204 of file ConfigParser.cc.

References CfgLine, CfgLineTokens_, CfgPos, and token().

Referenced by TestConfigParser::doParseQuotedTest(), TestRock::setUp(), setup_scheme(), TestACLMaxUserIP::testParseLine(), TestUfs::testUfsDefaultEngine(), and TestUfs::testUfsSearch().

◆ skipOptional()

bool ConfigParser::skipOptional ( const char * keyword )

Definition at line 584 of file ConfigParser.cc.

References assert, NextToken(), and PeekAtToken().

Referenced by optionalAclList().

◆ strtokFile()

char * ConfigParser::strtokFile ( )

static

Backward compatibility wrapper for the ConfigParser::NextToken method. If the configuration_includes_quoted_values configuration parameter is set to 'off' this interprets the quoted tokens as filenames.

Definition at line 65 of file ConfigParser.cc.

References CONFIG_LINE_LIMIT, DBG_CRITICAL, debugs, NextElement(), NextToken(), O_TEXT, RecognizeQuotedValues, and w_space.

Referenced by aclParseHTTPStatusList(), Acl::InnerNode::lineParse(), ACLAdaptationServiceData::parse(), ACLARP::parse(), ACLASN::parse(), ACLAtStepData::parse(), ACLCertificateData::parse(), Acl::ConnectionsEncrypted::parse(), Acl::ConnMark::parse(), ACLDomainData::parse(), ACLEui64::parse(), ACLHasComponentData::parse(), ACLHierCodeData::parse(), ACLHTTPHeaderData::parse(), ACLIntRange::parse(), ACLIP::parse(), ACLMaxConnection::parse(), ACLMethodData::parse(), ACLNoteData::parse(), ACLProtocolData::parse(), ACLRandom::parse(), ACLSquidErrorData::parse(), ACLSslErrorData::parse(), ACLStringData::parse(), ACLTimeData::parse(), Acl::TransactionInitiator::parse(), ACLUserData::parse(), ACLMaxUserIP::parse(), ACLExternal::parse(), and RegexStrtokFile().

◆ token()

SBuf ConfigParser::token ( const char * expectedTokenDescription )

Definition at line 574 of file ConfigParser.cc.

References CurrentLocation(), debugs, Here, NextToken(), and ToSBuf().

Referenced by Security::KeyLog::KeyLog(), ConfigParser::CfgFile::nextElement(), NextElement(), NextQuotedOrToEol(), NextQuotedToken(), NextToken(), ConfigParser::CfgFile::parse(), PeekAtToken(), regex(), RegexStrtokFile(), SetCfgLine(), TokenParse(), and UnQuote().

◆ TokenParse()

char * ConfigParser::TokenParse	(	const char *&	nextToken,
		ConfigParser::TokenType &	type
	)

staticprotected

Does the real tokens parsing job: Ignore comments, unquote an element if required.

Returns: the next token, or NULL if there are no available tokens in the nextToken string.

Parameters

nextToken	updated to point to the pos after parsed token.
type	The token type

Definition at line 222 of file ConfigParser.cc.

References atParseKey, CfgLineTokens_, DBG_CRITICAL, debugs, FunctionParameters, KvPairState_, ParseKvPair_, ParseQuotedOrToEol_, PreviewMode_, QuotedToken, RecognizeQuotedPair_, RecognizeQuotedValues, self_destruct(), SimpleToken, SQUID_ERROR_TOKEN, StrictMode, token(), UnQuote(), w_space, xstrdup, and xstrndup().

Referenced by ConfigParser::CfgFile::nextElement(), and NextElement().

◆ UnQuote()

char * ConfigParser::UnQuote	(	const char *	token,
		const char **	next = `nullptr`
	)

staticprotected

Unquotes the token, which must be quoted.

Parameters

next	if it is not NULL, it is set after the end of token.

Definition at line 139 of file ConfigParser.cc.

References assert, CONFIG_LINE_LIMIT, DBG_CRITICAL, debugs, LOCAL_ARRAY, PreviewMode_, self_destruct(), SQUID_ERROR_TOKEN, token(), w_space, and xstrncpy().

Referenced by TokenParse().

Member Data Documentation

◆ AllowMacros_

bool ConfigParser::AllowMacros_ = false

staticprotected

Definition at line 227 of file ConfigParser.h.

Referenced by DisableMacros(), and EnableMacros().

◆ CfgFiles

std::stack< ConfigParser::CfgFile * > ConfigParser::CfgFiles

staticprotected

Definition at line 222 of file ConfigParser.h.

Referenced by destruct(), NextQuotedOrToEol(), and NextToken().

◆ CfgLine

const char * ConfigParser::CfgLine = nullptr

staticprotected

Definition at line 224 of file ConfigParser.h.

Referenced by SetCfgLine().

◆ CfgLineTokens_

std::queue< char * > ConfigParser::CfgLineTokens_

staticprotected

Definition at line 226 of file ConfigParser.h.

Referenced by SetCfgLine(), and TokenParse().

◆ CfgPos

const char * ConfigParser::CfgPos = nullptr

staticprotected

Definition at line 225 of file ConfigParser.h.

Referenced by NextElement(), and SetCfgLine().

◆ KvPairState_

ConfigParser::ParsingStates ConfigParser::KvPairState_ = ConfigParser::atParseKey

staticprotected

Definition at line 31 of file ConfigParser.cc.

Referenced by NextKvPair(), and TokenParse().

◆ LastTokenType

ConfigParser::TokenType ConfigParser::LastTokenType = ConfigParser::SimpleToken

staticprotected

Definition at line 223 of file ConfigParser.h.

Referenced by LastTokenWasQuoted(), and NextToken().

◆ ParseKvPair_

bool ConfigParser::ParseKvPair_ = false

staticprotected

Definition at line 231 of file ConfigParser.h.

Referenced by NextKvPair(), and TokenParse().

◆ ParseQuotedOrToEol_

bool ConfigParser::ParseQuotedOrToEol_ = false

staticprotected

Definition at line 228 of file ConfigParser.h.

Referenced by NextQuotedOrToEol(), and TokenParse().

◆ PreviewMode_

bool ConfigParser::PreviewMode_ = false

staticprotected

Definition at line 230 of file ConfigParser.h.

Referenced by ConfigParser::CfgFile::nextElement(), NextElement(), NextToken(), PeekAtToken(), TokenParse(), and UnQuote().

◆ RecognizeQuotedPair_

bool ConfigParser::RecognizeQuotedPair_ = false

staticprotected

Definition at line 229 of file ConfigParser.h.

Referenced by regex(), RegexStrtokFile(), and TokenParse().

◆ RecognizeQuotedValues

bool ConfigParser::RecognizeQuotedValues = true

static

Definition at line 152 of file ConfigParser.h.

Referenced by dump_configuration_includes_quoted_values(), free_configuration_includes_quoted_values(), NextQuotedToken(), parse_configuration_includes_quoted_values(), regex(), RegexStrtokFile(), strtokFile(), and TokenParse().

◆ StrictMode

bool ConfigParser::StrictMode = true

static

Strict syntax mode. Does not allow not alphanumeric characters in unquoted tokens. Controlled by the configuration_includes_quoted_values in squid.conf but remains false when the the legacy ConfigParser::NextQuotedToken() call forces RecognizeQuotedValues to be temporary true.

Definition at line 160 of file ConfigParser.h.

Referenced by free_configuration_includes_quoted_values(), parse_configuration_includes_quoted_values(), and TokenParse().

The documentation for this class was generated from the following files:

squid-cache.org

Optimising Web Delivery

Classes

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Types

Static Protected Member Functions

Static Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ ParsingStates

◆ TokenType

Member Function Documentation

◆ cachePeer()

◆ closeDirective()

◆ CurrentLocation()

◆ destruct()

◆ DisableMacros()

◆ EnableMacros()

◆ LastTokenWasQuoted()

◆ NextElement()

◆ NextKvPair()

◆ NextQuotedOrToEol()

◆ NextQuotedToken()

◆ NextToken()

◆ optionalAclList()

◆ optionalKvPair()

◆ ParseBool()

◆ ParseUShort()

◆ ParseWordList()

◆ PeekAtToken()

◆ QuoteString()

◆ regex()

◆ RegexStrtokFile()

◆ rejectDuplicateDirective()

◆ SetCfgLine()

◆ skipOptional()

◆ strtokFile()

◆ token()

◆ TokenParse()

◆ UnQuote()

Member Data Documentation

◆ AllowMacros_

◆ CfgFiles

◆ CfgLine

◆ CfgLineTokens_

◆ CfgPos

◆ KvPairState_

◆ LastTokenType

◆ ParseKvPair_

◆ ParseQuotedOrToEol_

◆ PreviewMode_

◆ RecognizeQuotedPair_

◆ RecognizeQuotedValues

◆ StrictMode

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