diff options
Diffstat (limited to 'contrib/ldapc++/src/LdifReader.cpp')
| -rw-r--r-- | contrib/ldapc++/src/LdifReader.cpp | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/contrib/ldapc++/src/LdifReader.cpp b/contrib/ldapc++/src/LdifReader.cpp new file mode 100644 index 0000000..207806d --- /dev/null +++ b/contrib/ldapc++/src/LdifReader.cpp @@ -0,0 +1,350 @@ +// $OpenLDAP$ +/* + * Copyright 2008-2022 The OpenLDAP Foundation, All Rights Reserved. + * COPYING RESTRICTIONS APPLY, see COPYRIGHT file + */ + +#include "LdifReader.h" +#include "LDAPMessage.h" +#include "LDAPEntry.h" +#include "LDAPAttributeList.h" +#include "LDAPAttribute.h" +#include "LDAPUrl.h" +#include "debug.h" + +#include <string> +#include <sstream> +#include <stdexcept> + +#include <sasl/saslutil.h> // For base64 routines + +typedef std::pair<std::string, std::string> stringpair; + +LdifReader::LdifReader( std::istream &input ) + : m_ldifstream(input), m_lineNumber(0) +{ + DEBUG(LDAP_DEBUG_TRACE, "<> LdifReader::LdifReader()" << std::endl); + this->m_version = 0; + // read the first record to find out version and type of the LDIF + this->readNextRecord(true); + this->m_currentIsFirst = true; +} + +int LdifReader::readNextRecord( bool first ) +{ + DEBUG(LDAP_DEBUG_TRACE, "-> LdifReader::readRecord()" << std::endl); + std::string line; + std::string type; + std::string value; + int numLine = 0; + int recordType = 0; + + if ( (! first) && this->m_currentIsFirst == true ) + { + this->m_currentIsFirst = false; + return m_curRecType; + } + + m_currentRecord.clear(); + + while ( !this->getLdifLine(line) ) + { + DEBUG(LDAP_DEBUG_TRACE, " Line: " << line << std::endl ); + + // skip comments and empty lines between entries + if ( line[0] == '#' || ( numLine == 0 && line.size() == 0 ) ) + { + DEBUG(LDAP_DEBUG_TRACE, "skipping empty line or comment" << std::endl ); + continue; + } + if ( line.size() == 0 ) + { + // End of Entry + break; + } + + this->splitLine(line, type, value); + + if ( numLine == 0 ) + { + if ( type == "version" ) + { + std::istringstream valuestream(value); + valuestream >> this->m_version; + if ( this->m_version != 1 ) // there is no other Version than LDIFv1 + { + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": Unsupported LDIF Version"; + throw( std::runtime_error(err.str()) ); + } + continue; + } + if ( type == "dn" ) // Record should start with the DN ... + { + DEBUG(LDAP_DEBUG_TRACE, " Record DN:" << value << std::endl); + } + else if ( type == "include" ) // ... or it might be an "include" line + { + DEBUG(LDAP_DEBUG_TRACE, " Include directive: " << value << std::endl); + if ( this->m_version == 1 ) + { + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": \"include\" not allowed in LDIF version 1."; + throw( std::runtime_error(err.str()) ); + } + else + { + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": \"include\" not yet supported."; + throw( std::runtime_error(err.str()) ); + } + } + else + { + DEBUG(LDAP_DEBUG_TRACE, " Record doesn't start with a DN" + << std::endl); + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": LDIF record does not start with a DN."; + throw( std::runtime_error(err.str()) ); + } + } + if ( numLine == 1 ) // might contain "changtype" to indicate a change request + { + if ( type == "changetype" ) + { + if ( first ) + { + this->m_ldifTypeRequest = true; + } + else if (! this->m_ldifTypeRequest ) + { + // Change Request in Entry record LDIF, should we accept it? + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": Change Request in an entry-only LDIF."; + throw( std::runtime_error(err.str()) ); + } + if ( value == "modify" ) + { + recordType = LDAPMsg::MODIFY_REQUEST; + } + else if ( value == "add" ) + { + recordType = LDAPMsg::ADD_REQUEST; + } + else if ( value == "delete" ) + { + recordType = LDAPMsg::DELETE_REQUEST; + } + else if ( value == "modrdn" ) + { + recordType = LDAPMsg::MODRDN_REQUEST; + } + else + { + DEBUG(LDAP_DEBUG_TRACE, " Unknown change request <" + << value << ">" << std::endl); + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": Unknown changetype: \"" << value << "\"."; + throw( std::runtime_error(err.str()) ); + } + } + else + { + if ( first ) + { + this->m_ldifTypeRequest = false; + } + else if (this->m_ldifTypeRequest ) + { + // Entry record in Change record LDIF, should we accept + // it (e.g. as AddRequest)? + } + recordType = LDAPMsg::SEARCH_ENTRY; + } + } + m_currentRecord.push_back( stringpair(type, value) ); + numLine++; + } + DEBUG(LDAP_DEBUG_TRACE, "<- LdifReader::readRecord() return: " + << recordType << std::endl); + m_curRecType = recordType; + return recordType; +} + +LDAPEntry LdifReader::getEntryRecord() +{ + std::list<stringpair>::const_iterator i = m_currentRecord.begin(); + if ( m_curRecType != LDAPMsg::SEARCH_ENTRY ) + { + throw( std::runtime_error( "The LDIF record: '" + i->second + + "' is not a valid LDAP Entry" )); + } + LDAPEntry resEntry(i->second); + i++; + LDAPAttribute curAttr(i->first); + LDAPAttributeList *curAl = new LDAPAttributeList(); + for ( ; i != m_currentRecord.end(); i++ ) + { + if ( i->first == curAttr.getName() ) + { + curAttr.addValue(i->second); + } + else + { + const LDAPAttribute* existing = curAl->getAttributeByName( i->first ); + if ( existing ) + { + // Attribute exists already (handle gracefully) + curAl->addAttribute( curAttr ); + curAttr = LDAPAttribute( *existing ); + curAttr.addValue(i->second); + curAl->delAttribute( i->first ); + } + else + { + curAl->addAttribute( curAttr ); + curAttr = LDAPAttribute( i->first, i->second ); + } + } + } + curAl->addAttribute( curAttr ); + resEntry.setAttributes( curAl ); + return resEntry; +} + +int LdifReader::getLdifLine(std::string &ldifline) +{ + DEBUG(LDAP_DEBUG_TRACE, "-> LdifReader::getLdifLine()" << std::endl); + + this->m_lineNumber++; + if ( ! getline(m_ldifstream, ldifline) ) + { + return -1; + } + while ( m_ldifstream && + (m_ldifstream.peek() == ' ' || m_ldifstream.peek() == '\t')) + { + std::string cat; + m_ldifstream.ignore(); + getline(m_ldifstream, cat); + ldifline += cat; + this->m_lineNumber++; + } + + DEBUG(LDAP_DEBUG_TRACE, "<- LdifReader::getLdifLine()" << std::endl); + return 0; +} + +void LdifReader::splitLine( + const std::string& line, + std::string &type, + std::string &value) const +{ + std::string::size_type pos = line.find(':'); + if ( pos == std::string::npos ) + { + DEBUG(LDAP_DEBUG_ANY, "Invalid LDIF line. No `:` separator" + << std::endl ); + std::ostringstream err; + err << "Line " << this->m_lineNumber << ": Invalid LDIF line. No `:` separator"; + throw( std::runtime_error( err.str() )); + } + + type = line.substr(0, pos); + if ( pos == line.size() ) + { + // empty value + value = ""; + return; + } + + pos++; + char delim = line[pos]; + if ( delim == ':' || delim == '<' ) + { + pos++; + } + + for( ; pos < line.size() && isspace(line[pos]); pos++ ) + { /* empty */ } + + value = line.substr(pos); + + if ( delim == ':' ) + { + // Base64 encoded value + DEBUG(LDAP_DEBUG_TRACE, " base64 encoded value" << std::endl ); + char outbuf[value.size()]; + int rc = sasl_decode64(value.c_str(), value.size(), + outbuf, value.size(), NULL); + if( rc == SASL_OK ) + { + value = std::string(outbuf); + } + else if ( rc == SASL_BADPROT ) + { + value = ""; + DEBUG( LDAP_DEBUG_TRACE, " invalid base64 content" << std::endl ); + std::ostringstream err; + err << "Line " << this->m_lineNumber << ": Can't decode Base64 data"; + throw( std::runtime_error( err.str() )); + } + else if ( rc == SASL_BUFOVER ) + { + value = ""; + DEBUG( LDAP_DEBUG_TRACE, " not enough space in output buffer" + << std::endl ); + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": Can't decode Base64 data. Buffer too small"; + throw( std::runtime_error( err.str() )); + } + } + else if ( delim == '<' ) + { + // URL value + DEBUG(LDAP_DEBUG_TRACE, " url value" << std::endl ); + std::ostringstream err; + err << "Line " << this->m_lineNumber + << ": URLs are currently not supported"; + throw( std::runtime_error( err.str() )); + } + else + { + // "normal" value + DEBUG(LDAP_DEBUG_TRACE, " string value" << std::endl ); + } + DEBUG(LDAP_DEBUG_TRACE, " Type: <" << type << ">" << std::endl ); + DEBUG(LDAP_DEBUG_TRACE, " Value: <" << value << ">" << std::endl ); + return; +} + +std::string LdifReader::readIncludeLine( const std::string& line ) const +{ + std::string::size_type pos = sizeof("file:") - 1; + std::string scheme = line.substr( 0, pos ); + std::string file; + + // only file:// URLs supported currently + if ( scheme != "file:" ) + { + DEBUG( LDAP_DEBUG_TRACE, "unsupported scheme: " << scheme + << std::endl); + } + else if ( line[pos] == '/' ) + { + if ( line[pos+1] == '/' ) + { + pos += 2; + } + file = line.substr(pos, std::string::npos); + DEBUG( LDAP_DEBUG_TRACE, "target file: " << file << std::endl); + } + return file; +} |