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764 lines
19 KiB
C
764 lines
19 KiB
C
#if !defined(lint)
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static char copyright[] = "Copyright 1992 The University of Adelaide";
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#endif
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/*
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* C O M M A N D
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*
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* Author: Mark R. Prior
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* Communications and Systems Branch
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* Information Technology Division
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* The University of Adelaide
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* E-mail: mrp@itd.adelaide.edu.au
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* Date: October 1992
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* Version: 1.8
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* Description:
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* Interpret the command sent by the client
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of Adelaide. The name of the University may not
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include "whois++.h"
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#include <stdlib.h>
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extern int getdtablesize (void);
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#define isspecial(c) ( (c) == ',' || (c) == ';' || (c) == ':' || (c) == '=' )
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static char **component = NULL;
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static int numberOfComponents;
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static int components = 10;
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static int
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getToken( char *token )
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{
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static char *buffer = NULL;
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static int idx;
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char ch;
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fd_set readfds;
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struct timeval timeout;
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int i, status, tablesize;
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if ( buffer == NULL ) {
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tablesize = getdtablesize();
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#ifdef FD_SETSIZE
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if ( tablesize > FD_SETSIZE ) {
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tablesize = FD_SETSIZE;
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}
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#endif /* FD_SETSIZE */
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timeout.tv_sec = 60;
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timeout.tv_usec = 0;
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FD_ZERO( &readfds );
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FD_SET( fileno( stdin ), &readfds );
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if ( (status = select( tablesize, &readfds, 0, 0, &timeout )) <= 0 ) {
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if ( status < 0 )
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printFormatted( lineLength, TRUE, stdout,
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"select: %s", strerror( errno ) );
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else
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printFormatted( lineLength, TRUE, stdout,
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"Connection timed out waiting for input." );
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exit( 1 );
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}
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/**/ /*
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* We really should determine how many characters are
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* waiting for us and then malloc that amount rather than
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* just guessing!
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*/
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if ( ( buffer = (char *)malloc(BUFSIZ) ) == NULL
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|| fgets( buffer, BUFSIZ, stdin ) == NULL ) {
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*token = '\0';
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return EOF;
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}
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idx = 0;
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i = strlen( buffer );
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while ( i-- > 0 && ( buffer[i] == '\r' || buffer[i] == '\n' ) )
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buffer[i] = '\0';
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if ( log )
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syslog( LOG_INFO, "Whois++ Query: %s", buffer );
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}
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while ( buffer[idx] != '\0' && isspace( (unsigned char) buffer[idx] ) )
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idx++;
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token[0] = buffer[idx++];
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token[1] = '\0';
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switch ( token[0] ) {
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case '\0':
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strcpy( token, "<end of line>" );
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free( buffer );
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buffer = NULL;
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return EOF;
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case '^':
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return TEMPLATE;
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case '!':
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return HANDLE;
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case '.':
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return ATTRIBUTE;
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case '#':
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return VALUE;
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case '*':
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return SEARCH_ALL;
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case '?':
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return HELP;
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case ':':
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return COLON;
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case ';':
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return SEMICOLON;
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case ',':
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return COMMA;
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case '=':
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return EQUALS;
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case '"':
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i = 0;
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do {
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ch = buffer[idx++];
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if ( ch == '\\' && buffer[idx] != '\0' )
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token[i++] = buffer[idx++];
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else
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token[i++] = ch;
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} while ( ch != '\0' && ch != '"' );
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if ( ch == '\0' ) {
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printFormatted( lineLength, TRUE, stdout,
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"Trailing \" missing" );
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idx--;
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}
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token[--i] = '\0';
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return SEARCH;
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default:
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i = 1;
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do {
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ch = buffer[idx++];
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if ( ch == '\\' && buffer[idx] != '\0' )
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token[i++] = buffer[idx++];
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else
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token[i++] = ch;
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} while ( ch != '\0' &&
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!isspace( (unsigned char) ch ) && !isspecial( ch ) );
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token[--i] = '\0';
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idx--;
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/**/ /*
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* The following is a brute force lookup, once the names
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* have settled down this should change to a hash table,
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* or something similar.
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*/
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if ( EQ( token, "help" ) )
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return HELP;
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else if ( EQ( token, "list" ) )
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return LIST;
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else if ( EQ( token, "show" ) )
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return SHOW;
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else if ( EQ( token, "constraints" ) )
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return CONSTRAINTS;
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else if ( EQ( token, "describe" ) )
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return DESCRIBE;
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else if ( EQ( token, "version" ) )
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return VERSION;
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else if ( EQ( token, "template" ) )
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return TEMPLATE;
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else if ( EQ( token, "handle" ) )
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return HANDLE;
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else if ( EQ( token, "attribute" ) )
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return ATTRIBUTE;
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else if ( EQ( token, "value" ) )
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return VALUE;
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else if ( EQ( token, "full" ) )
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return FULL;
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else if ( EQ( token, "abridged" ) )
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return ABRIDGED;
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else if ( EQ( token, "summary" ) )
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return SUMMARY;
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else if ( EQ( token, "format" ) )
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return FORMAT;
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else if ( EQ( token, "hold" ) )
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return HOLD;
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else if ( EQ( token, "maxhits" ) )
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return MAXHITS;
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else if ( EQ( token, "match" ) )
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return MATCH;
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else if ( EQ( token, "linelength" ) )
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return LINE_LENGTH;
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else if ( EQ( token, "command" ) )
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return COMMAND;
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else if ( EQ( token, "trace" ) )
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return TRACE;
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else
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return SEARCH;
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}
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}
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static int
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term(
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int token,
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char *value,
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char *attribute,
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int *specifier,
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int *soundex
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)
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{
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char buffer[BUFSIZ], temp[BUFSIZ];
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int iterations;
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*soundex = FALSE;
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switch ( token ) {
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case ATTRIBUTE: /* . */
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case VALUE: /* # */
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case HANDLE: /* ! */
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case TEMPLATE: /* ^ */
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case SEARCH_ALL:/* * */
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*specifier = token;
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if ( strlen( value ) > 1 ) {
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/* fullname used, so expect an equals sign */
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if ( getToken( buffer ) != EQUALS ) {
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printFormatted( lineLength, TRUE, stdout,
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"\"=\" expected" );
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return ERROR;
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} else
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token = getToken( value );
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} else
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token = getToken( value );
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if ( token != COMMA && token != SEMICOLON && token != EQUALS
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&& token != COLON && token != EOF ) {
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token = getToken( buffer );
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break;
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}
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case COMMA:
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case SEMICOLON:
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case EQUALS:
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case COLON:
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case EOF:
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printFormatted( lineLength, TRUE, stdout,
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"Expected search string but got \"%s\"", buffer );
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return ERROR;
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default:
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*specifier = SEARCH_ALL;
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if ( ( token = getToken( buffer ) ) == EQUALS ) {
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strcpy( attribute, value );
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token = getToken( value );
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if ( token == COMMA || token == SEMICOLON
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|| token == COLON || token == EOF ) {
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printFormatted( lineLength, TRUE, stdout,
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"Syntax error, string expected." );
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return ERROR;
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}
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token = getToken( buffer );
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}
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}
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while ( token != COMMA && token != SEMICOLON && token != COLON
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&& token != EOF ) {
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if ( *value != '\0' )
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strcat( value, " " );
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strcat( value, buffer );
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token = getToken( buffer );
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}
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iterations = 2;
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while ( token == COMMA ) {
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token = getToken( buffer );
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switch ( token ) {
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case MATCH:
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iterations = 0;
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if ( ( token = getToken( buffer ) ) != EQUALS ) {
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printFormatted( lineLength, TRUE, stdout,
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"\"=\" expected" );
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} else
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token = getToken( buffer );
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if ( EQ( buffer, "exact" ) )
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*soundex = FALSE;
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else if ( EQ( buffer, "fuzzy" ) )
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*soundex = TRUE;
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else
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printFormatted( lineLength, TRUE, stdout,
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"Unrecognised search type" );
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token = getToken( buffer );
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break;
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default:
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if ( iterations == 0 ) {
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/* obviously an unrecognised constraint */
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printFormatted( lineLength, TRUE, stdout,
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"Constraint \"%s\" not supported",
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buffer );
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while ( ( token = getToken( buffer ) ) != EOF
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&& token != COMMA && token != COLON
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&& token != SEMICOLON )
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;
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} else {
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strcpy( temp, buffer );
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token = getToken( buffer );
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if ( token == EQUALS ) {
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iterations = 0;
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printFormatted( lineLength, TRUE, stdout,
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"Constraint \"%s\" not supported",
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buffer );
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}
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while ( token != EOF && token != SEMICOLON
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&& token != COLON && token != COMMA ) {
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if ( iterations > 0 ) {
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strcat( temp, " " );
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strcat( temp, buffer );
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}
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token = getToken( buffer );
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}
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if ( iterations > 0 ) {
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printFormatted( lineLength, TRUE, stdout,
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"Assuming \"%s\" part of query and not an unrecognised constraint.", temp );
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strcat( value, "," );
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strcat( value, temp );
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}
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}
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break;
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}
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iterations--;
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}
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if ( *value == '\0' ) {
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printFormatted( lineLength, TRUE, stdout,
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"Value not specified" );
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return ERROR;
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}
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if ( *specifier == NULL )
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*specifier = SEARCH_ALL;
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return token;
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}
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static int
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processTerm(
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int specifier,
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int soundex,
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char *buffer,
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char *attribute,
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char *value
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)
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{
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char *s, *t;
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char query[BUFSIZ];
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char **reallocResult;
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switch ( specifier ) {
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case SEARCH_ALL:
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if ( numberOfComponents+3 >= components ) {
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components += 10;
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reallocResult = (char **)realloc(component, sizeof(char **)*components);
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if ( reallocResult == NULL ) {
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printFormatted( lineLength, TRUE, stdout,
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"Realloc failed" );
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return ERROR;
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} else
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component = reallocResult;
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}
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if ( attribute != NULL && *attribute != '\0' ) {
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/* The user obviously knows what they are doing */
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sprintf( query, "(%s%s%s)", attribute,
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(soundex)?"~=":"=", buffer );
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} else {
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if ( ( s = strchr( buffer, ',' ) ) != NULL ) {
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*s++ = '\0';
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while ( *s && isspace( (unsigned char) *s ) )
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s++;
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sprintf( query, "(sn%s%s)",
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(soundex)?"~=":"=", buffer );
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component[numberOfComponents++] = strdup( query );
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/* let's just make sure there is no title */
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if ( ( t = strrchr( s, ',' ) ) != NULL ) {
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*t++ = '\0';
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while ( *t && isspace( (unsigned char) *t ) )
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t++;
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sprintf( query, "(personalTitle%s%s)",
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(soundex)?"~=":"=", t );
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component[numberOfComponents++] = strdup( query );
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}
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sprintf( query, "%s %s", s, buffer );
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strcpy( buffer, query );
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} else if ( strncasecmp( buffer, "first ", 6 ) == 0 ) {
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sprintf( query, "%s *", &buffer[6] );
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strcpy( buffer, query );
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}
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if ( ( s = strchr( buffer, '@' ) ) != NULL ) {
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*s++ = '\0';
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if ( *buffer == '\0' ) /* no username */
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sprintf( query, "(mail=*@%s)", s );
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else if ( *s == '\0' ) /* no host */
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sprintf( query, "(|(mail=%s@*)(userid=%s))",
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buffer, buffer );
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else
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sprintf( query, "(mail=%s@%s)",
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buffer, s );
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if ( soundex )
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printFormatted( lineLength, TRUE, stdout,
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"Fuzzy matching not supported on e-mail address queries" );
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} else if ( strchr( buffer, ' ' ) == NULL ) {
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sprintf( query,
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"(|(sn%s%s)(userid%s%s)(l%s%s)(ou%s%s)\
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(&(cn%s%s)(!(objectClass=person))))",
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer );
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} else {
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#if defined(UOFA)
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sprintf( query, "(|(l%s%s)(ou%s%s)(preferredName%s%s)",
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer );
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#else
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sprintf( query, "(|(l%s%s)(ou%s%s)",
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(soundex)?"~=":"=", buffer,
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(soundex)?"~=":"=", buffer );
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#endif
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/*
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* If LDAP and/or Quipu didn't strip spaces
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* then this would be different but as it does
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* this is easy :-) but it also means we might
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* get false hits.
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*/
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if ( soundex ) {
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strcat( query, "(cn~=" );
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strcat( query, buffer );
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} else {
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strcat( query, "(cn=*" );
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strcat( query, strtok( buffer, " " ) );
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while ( ( s = strtok( NULL, " " ) ) != NULL ) {
|
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strcat( query, " * " );
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strcat( query, s );
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|
}
|
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}
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strcat( query, "))" );
|
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}
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}
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component[numberOfComponents++] = strdup( query );
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break;
|
|
|
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case ATTRIBUTE:
|
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if ( numberOfComponents+1 >= components ) {
|
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components += 10;
|
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reallocResult = (char **)realloc(component, sizeof(char **)*components);
|
|
if ( reallocResult == NULL ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
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"Realloc failed" );
|
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return ERROR;
|
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} else
|
|
component = reallocResult;
|
|
}
|
|
if ( *value != '\0' ) {
|
|
sprintf( query, "(%s%s%s)", buffer,
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(soundex)?"~=":"=", value );
|
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component[numberOfComponents++] = strdup( query );
|
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*value = '\0';
|
|
} else {
|
|
if ( *attribute != '\0' ) {
|
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sprintf( query, "(%s%s*)", attribute,
|
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(soundex)?"~=":"=" );
|
|
component[numberOfComponents++] = strdup( query );
|
|
}
|
|
strcpy( attribute, buffer );
|
|
}
|
|
break;
|
|
|
|
case TEMPLATE:
|
|
if ( numberOfComponents+1 >= components ) {
|
|
components += 10;
|
|
reallocResult = (char **)realloc(component, sizeof(char **)*components);
|
|
if ( reallocResult == NULL ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Realloc failed" );
|
|
return ERROR;
|
|
} else
|
|
component = reallocResult;
|
|
}
|
|
sprintf( query, "(objectClass%s%s)",
|
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(soundex)?"~=":"=", templateToObjectClass( buffer ) );
|
|
component[numberOfComponents++] = strdup( query );
|
|
break;
|
|
|
|
case VALUE:
|
|
if ( *attribute != '\0' ) {
|
|
if ( numberOfComponents+1 >= components ) {
|
|
components += 10;
|
|
reallocResult = (char **)realloc(component, sizeof(char **)*components);
|
|
if ( reallocResult == NULL ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Realloc failed" );
|
|
return ERROR;
|
|
} else
|
|
component = reallocResult;
|
|
}
|
|
sprintf( query, "(%s%s%s)", attribute,
|
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(soundex)?"~=":"=", buffer );
|
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component[numberOfComponents++] = strdup( query );
|
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*attribute = '\0';
|
|
} else {
|
|
if ( *value != '\0' )
|
|
printFormatted( lineLength, TRUE, stdout,
|
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"Ignoring old value (%s)", value );
|
|
strcpy( value, buffer );
|
|
}
|
|
break;
|
|
|
|
case HANDLE:
|
|
if ( numberOfComponents+1 >= components ) {
|
|
components += 10;
|
|
reallocResult = (char **)realloc(component, sizeof(char **)*components);
|
|
if ( reallocResult == NULL ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Realloc failed" );
|
|
return ERROR;
|
|
} else
|
|
component = reallocResult;
|
|
}
|
|
component[numberOfComponents++] = strdup( buffer );
|
|
return READ;
|
|
|
|
}
|
|
return SEARCH;
|
|
}
|
|
|
|
int
|
|
parseCommand( char *query )
|
|
{
|
|
/*
|
|
* This procedure reads the string sent by the user and breaks it
|
|
* down into command to execute.
|
|
*/
|
|
char buffer[BUFSIZ], attribute[BUFSIZ], objectClass[BUFSIZ],
|
|
value[BUFSIZ];
|
|
char **reallocResult;
|
|
int command, specificName, length, token, i, j, specifier, soundex;
|
|
int trace = FALSE;
|
|
|
|
switch ( command = getToken( buffer ) ) {
|
|
case COMMAND:
|
|
case CONSTRAINTS:
|
|
case DESCRIBE:
|
|
case VERSION:
|
|
/* <command> */
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
case HELP:
|
|
case LIST:
|
|
/* <command> [ <string> ] */
|
|
if ( ( token = getToken( buffer ) ) != EOF && token != COLON ) {
|
|
strcpy( query, buffer );
|
|
token = getToken( buffer );
|
|
} else
|
|
*query = '\0';
|
|
break;
|
|
|
|
case SHOW:
|
|
/* "show" <string> */
|
|
if ( ( token = getToken( buffer ) ) != EOF && token != COLON ) {
|
|
strcpy( query, buffer );
|
|
token = getToken( buffer );
|
|
} else {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Show must have a parameter" );
|
|
return ERROR;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* <term> [ ";" <term> ] */
|
|
*attribute = '\0';
|
|
*value = '\0';
|
|
soundex = FALSE;
|
|
numberOfComponents = 0;
|
|
if ( ( component = (char **)malloc(sizeof(char **)*components) ) == NULL ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Malloc failed" );
|
|
return ERROR;
|
|
}
|
|
if ( ( token = term( command, buffer, attribute, &specifier,
|
|
&soundex ) ) != ERROR )
|
|
command = processTerm( specifier, soundex, buffer,
|
|
attribute, value );
|
|
else
|
|
return ERROR;
|
|
if ( token == SEMICOLON ) {
|
|
if ( command == READ ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Multiple components on a Handle query not supported." );
|
|
return ERROR;
|
|
}
|
|
do {
|
|
soundex = FALSE;
|
|
token = getToken( buffer );
|
|
token = term( token, buffer, attribute,
|
|
&specifier, &soundex );
|
|
command = processTerm( specifier, soundex,
|
|
buffer, attribute, value );
|
|
if ( command == READ ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Multiple components on a Handle query not supported." );
|
|
return ERROR;
|
|
} else if ( command == ERROR )
|
|
return ERROR;
|
|
} while ( token == SEMICOLON );
|
|
}
|
|
/*
|
|
* Need to tidy up outstanding single value or attribute terms
|
|
*/
|
|
if ( *attribute != '\0' ) {
|
|
if ( numberOfComponents+1 >= components ) {
|
|
components += 10;
|
|
reallocResult = (char **)realloc(component, sizeof(char **)*components);
|
|
if ( reallocResult == NULL ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Realloc failed" );
|
|
return ERROR;
|
|
} else
|
|
component = reallocResult;
|
|
}
|
|
sprintf( query, "(%s%s*)", attribute,
|
|
(soundex)?"~=":"=" );
|
|
component[numberOfComponents++] = strdup( query );
|
|
}
|
|
if ( *value != '\0' )
|
|
if ( processTerm( SEARCH_ALL, soundex, value, NULL, NULL ) == ERROR )
|
|
return ERROR;
|
|
if ( numberOfComponents == 0 ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"NULL query." );
|
|
return ERROR;
|
|
} else if ( numberOfComponents == 1 )
|
|
strcpy( query, component[0] );
|
|
else {
|
|
strcpy( query, "(&" );
|
|
for ( i = 0; i < numberOfComponents; i++ )
|
|
strcat( query, component[i] );
|
|
strcat( query, ")" );
|
|
}
|
|
free( component );
|
|
break;
|
|
|
|
}
|
|
if ( token == COLON ) { /* global constraints */
|
|
do {
|
|
token = getToken( buffer );
|
|
switch ( token ) {
|
|
case FORMAT:
|
|
if ( ( token = getToken( buffer ) ) != EQUALS ) {
|
|
printFormatted( lineLength, TRUE, stdout, "\"=\" expected" );
|
|
} else
|
|
token = getToken( buffer );
|
|
switch ( token ) {
|
|
case FULL:
|
|
case ABRIDGED:
|
|
case HANDLE:
|
|
case SUMMARY:
|
|
if ( outputFormat != NULL )
|
|
printFormatted( lineLength, TRUE, stdout, "Only one response format can be specified." );
|
|
else
|
|
outputFormat = token;
|
|
break;
|
|
|
|
default:
|
|
printFormatted( lineLength, TRUE, stdout, "Unrecognised format specifier" );
|
|
}
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
case HOLD:
|
|
holdConnection = TRUE;
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
case MAXHITS:
|
|
if ( ( token = getToken( buffer ) ) != EQUALS ) {
|
|
printFormatted( lineLength, TRUE, stdout, "\"=\" expected" );
|
|
} else
|
|
token = getToken( buffer );
|
|
if ( (maxHits = atoi( buffer )) < 1
|
|
|| maxHits > maximumSize ) {
|
|
printFormatted( lineLength, TRUE, stdout, "Invalid maxhits value, defaulting to %s", maximumSize );
|
|
maxHits = maximumSize;
|
|
}
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
case LANGUAGE:
|
|
if ( ( token = getToken( buffer ) ) != EQUALS ) {
|
|
printFormatted( lineLength, TRUE, stdout, "\"=\" expected" );
|
|
} else
|
|
token = getToken( buffer );
|
|
/**/ /* need to save this value and lookup locale */
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Language not currently implemented" );
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
case LINE_LENGTH:
|
|
if ( ( token = getToken( buffer ) ) != EQUALS ) {
|
|
printFormatted( lineLength, TRUE, stdout, "\"=\" expected" );
|
|
} else
|
|
token = getToken( buffer );
|
|
lineLength = atoi( buffer );
|
|
if ( lineLength < MIN_LINE_LENGTH
|
|
|| lineLength > MAX_LINE_LENGTH ) {
|
|
printFormatted( lineLength, TRUE, stdout, "Invalid line length, using default %d", DEFAULT_LINE_LENGTH );
|
|
lineLength = DEFAULT_LINE_LENGTH;
|
|
}
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
case TRACE:
|
|
trace = TRUE;
|
|
token = getToken( buffer );
|
|
break;
|
|
|
|
default:
|
|
printFormatted( lineLength, TRUE, stdout, "Unrecognised global constraint \"%s\"", buffer );
|
|
while ( ( token = getToken( buffer ) ) != EOF
|
|
&& token != COMMA )
|
|
;
|
|
break;
|
|
|
|
}
|
|
} while ( token == COMMA );
|
|
}
|
|
if ( token != EOF ) {
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Data following \"%s\" ignored.", buffer );
|
|
while ( ( token = getToken( buffer ) ) != EOF )
|
|
;
|
|
}
|
|
if ( trace && ( command == READ || command == SEARCH ) )
|
|
switch (command) {
|
|
case READ:
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Attempting to read \"%s\"", query );
|
|
break;
|
|
|
|
case SEARCH:
|
|
printFormatted( lineLength, TRUE, stdout,
|
|
"Searching using LDAP query %s", query );
|
|
break;
|
|
|
|
}
|
|
return command;
|
|
}
|