#include <ConfigParser.h>

Collaboration diagram for ConfigParser:

Classes
class	CfgFile

Public Types
enum	TokenType { SimpleToken, QuotedToken, FunctionParameters }

Public Member Functions
void	destruct ()

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 *	RegexPattern ()

static char *	NextQuotedToken ()

static bool	LastTokenWasQuoted ()

static char *	NextQuotedOrToEol ()

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

static char *	PeekAtToken ()

static void	TokenPutBack (const char *token)

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 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 *	Undo ()
	Return the last TokenPutBack() queued element or NULL if none exist. More...

static char *	UnQuote (const char token, const char *next=NULL)

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 = NULL
	The current line to parse. More...

static const char *	CfgPos = NULL
	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 std::queue< std::string >	Undo_
	The list with TokenPutBack() queued elements. 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 poped 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 39 of file ConfigParser.h.

Member Enumeration Documentation

enum ConfigParser::ParsingStates

protected

Enumerator
atParseKey
atParseValue

Definition at line 213 of file ConfigParser.h.

enum ConfigParser::TokenType

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

Enumerator
SimpleToken
QuotedToken
FunctionParameters

Definition at line 47 of file ConfigParser.h.

Member Function Documentation

void ConfigParser::destruct ( )

Definition at line 34 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().

static void ConfigParser::DisableMacros ( )

inlinestatic

Definition at line 126 of file ConfigParser.h.

References AllowMacros_.

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

static void ConfigParser::EnableMacros ( )

inlinestatic

Definition at line 123 of file ConfigParser.h.

References AllowMacros_.

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

static bool ConfigParser::LastTokenWasQuoted ( )

inlinestatic

Returns: true if the last parsed token was quoted

Definition at line 90 of file ConfigParser.h.

References LastTokenType, and QuotedToken.

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

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

staticprotected

Definition at line 342 of file ConfigParser.cc.

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

Referenced by NextToken(), and strtokFile().

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 450 of file ConfigParser.cc.

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

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

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 432 of file ConfigParser.cc.

References CfgFiles, NextToken(), and ParseQuotedOrToEol_.

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

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 498 of file ConfigParser.cc.

References NextToken(), and RecognizeQuotedValues.

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

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 357 of file ConfigParser.cc.

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

Referenced by aclParseAccessLine(), aclParseDenyInfoLine(), Acl::OptionExtractor::advance(), testConfigParser::doParseQuotedTest(), GetInteger(), GetInteger64(), GetPercentage(), GetService(), GetShort(), NextKvPair(), NextQuotedOrToEol(), NextQuotedToken(), DelaySpec::parse(), ACLHasComponentData::parse(), ACLSquidErrorData::parse(), Adaptation::ServiceConfig::parse(), Adaptation::ServiceGroup::parse(), Notes::parse(), parse_access_log(), parse_acl_tos(), parse_address(), parse_authparam(), parse_cachedir(), 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_peer_access(), 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(), Log::LogConfig::parseFormats(), Format::FmtConfig::parseFormats(), Store::Disk::parseOptions(), parsePortCfg(), MessageDelayConfig::parseResponseDelayPool(), MessageDelayConfig::parseResponseDelayPoolAccess(), parseTimeLine(), PeekAtToken(), RegexPattern(), and strtokFile().

void ConfigParser::ParseBool ( bool * var )

static

Definition at line 3150 of file cache_cf.cc.

References GetInteger(), i, and self_destruct().

void ConfigParser::ParseUShort ( unsigned short * var )

static

Definition at line 3144 of file cache_cf.cc.

References GetShort().

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

void ConfigParser::ParseWordList ( wordlist ** list )

static

Definition at line 3172 of file cache_cf.cc.

References parse_wordlist().

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

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 423 of file ConfigParser.cc.

References NextToken(), and PreviewMode_.

Referenced by Acl::OptionExtractor::advance(), ACLHasComponentData::parse(), ACLAnnotationData::parse(), parse_access_log(), parse_ftp_epsv(), parse_pipelinePrefetch(), and parseTimeLine().

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

static

Definition at line 508 of file ConfigParser.cc.

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

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

char * ConfigParser::RegexPattern ( )

static

Parse the next token as a regex patern. The regex patterns are non quoted tokens.

Definition at line 485 of file ConfigParser.cc.

References DBG_CRITICAL, debugs, NextToken(), RecognizeQuotedPair_, RecognizeQuotedValues, and self_destruct().

Referenced by parse_refreshpattern().

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 472 of file ConfigParser.cc.

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

Referenced by ACLRegexData::parse().

void ConfigParser::SetCfgLine ( char * line )

static

Definition at line 234 of file ConfigParser.cc.

References CfgLine, CfgLineTokens_, CfgPos, and free.

Referenced by testConfigParser::doParseQuotedTest(), testRock::setUp(), setup_scheme(), testACLMaxUserIP::testParseLine(), testUfs::testUfsDefaultEngine(), and testUfs::testUfsSearch().

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 82 of file ConfigParser.cc.

References buf, CONFIG_LINE_LIMIT, DBG_CRITICAL, debugs, fn, NextElement(), NextToken(), NULL, O_TEXT, RecognizeQuotedValues, Undo(), and w_space.

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

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 246 of file ConfigParser.cc.

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

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

void ConfigParser::TokenPutBack ( const char * token )

static

The next NextToken call will return the token as next element It can be used repeatedly to add more than one tokens in a FIFO list.

Definition at line 61 of file ConfigParser.cc.

References assert, and Undo_.

Referenced by Acl::OptionsParser::parse().

char * ConfigParser::Undo ( )

staticprotected

Definition at line 68 of file ConfigParser.cc.

References CONFIG_LINE_LIMIT, NULL, PreviewMode_, Undo_, and xstrncpy().

Referenced by NextToken(), and strtokFile().

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

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 159 of file ConfigParser.cc.

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

Referenced by TokenParse().

Member Data Documentation

bool ConfigParser::AllowMacros_ = false

staticprotected

Definition at line 208 of file ConfigParser.h.

Referenced by DisableMacros(), EnableMacros(), and UnQuote().

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

staticprotected

Definition at line 202 of file ConfigParser.h.

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

const char * ConfigParser::CfgLine = NULL

staticprotected

Definition at line 204 of file ConfigParser.h.

Referenced by SetCfgLine().

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

staticprotected

Definition at line 206 of file ConfigParser.h.

Referenced by SetCfgLine(), and TokenParse().

const char * ConfigParser::CfgPos = NULL

staticprotected

Definition at line 205 of file ConfigParser.h.

Referenced by NextElement(), and SetCfgLine().

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

staticprotected

Definition at line 27 of file ConfigParser.cc.

Referenced by NextKvPair(), and TokenParse().

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

staticprotected

Definition at line 203 of file ConfigParser.h.

Referenced by LastTokenWasQuoted(), and NextToken().

bool ConfigParser::ParseKvPair_ = false

staticprotected

Definition at line 212 of file ConfigParser.h.

Referenced by NextKvPair(), and TokenParse().

bool ConfigParser::ParseQuotedOrToEol_ = false

staticprotected

Definition at line 209 of file ConfigParser.h.

Referenced by NextQuotedOrToEol(), and TokenParse().

bool ConfigParser::PreviewMode_ = false

staticprotected

Definition at line 211 of file ConfigParser.h.

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

bool ConfigParser::RecognizeQuotedPair_ = false

staticprotected

Definition at line 210 of file ConfigParser.h.

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

bool ConfigParser::RecognizeQuotedValues = true

static

Definition at line 129 of file ConfigParser.h.

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

bool ConfigParser::StrictMode = true

static

Strict syntax mode. Does not allow not alphanumeric characters in unquoted tokens. Controled 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 137 of file ConfigParser.h.

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

std::queue< std::string > ConfigParser::Undo_

staticprotected

Definition at line 207 of file ConfigParser.h.

Referenced by TokenPutBack(), and Undo().

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

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