1 /* str2filter.c - parse an rfc 1588 string filter */
13 static char *find_matching_paren(char *s);
14 static Filter *str2list(char *str, long unsigned int ftype);
15 static Filter *str2simple(char *str);
16 static int str2subvals(char *val, Filter *f);
19 str2filter( char *str )
24 Debug( LDAP_DEBUG_FILTER, "str2filter \"%s\"\n", str, 0, 0 );
26 if ( str == NULL || *str == '\0' ) {
32 if ( (end = find_matching_paren( str )) == NULL ) {
41 Debug( LDAP_DEBUG_FILTER, "str2filter: AND\n",
45 f = str2list( str, LDAP_FILTER_AND );
49 Debug( LDAP_DEBUG_FILTER, "put_filter: OR\n",
53 f = str2list( str, LDAP_FILTER_OR );
57 Debug( LDAP_DEBUG_FILTER, "put_filter: NOT\n",
61 f = str2list( str, LDAP_FILTER_NOT );
65 Debug( LDAP_DEBUG_FILTER, "str2filter: simple\n",
68 f = str2simple( str );
74 default: /* assume it's a simple type=value filter */
75 Debug( LDAP_DEBUG_FILTER, "str2filter: default\n", 0, 0,
78 f = str2simple( str );
86 * Put a list of filters like this "(filter1)(filter2)..."
90 str2list( char *str, unsigned long ftype )
97 Debug( LDAP_DEBUG_FILTER, "str2list \"%s\"\n", str, 0, 0 );
99 f = (Filter *) ch_calloc( 1, sizeof(Filter) );
104 while ( *str && isspace( *str ) )
109 if ( (next = find_matching_paren( str )) == NULL ) {
116 /* now we have "(filter)" with str pointing to it */
117 if ( (*fp = str2filter( str )) == NULL ) {
133 str2simple( char *str )
137 char *value, savechar;
139 Debug( LDAP_DEBUG_FILTER, "str2simple \"%s\"\n", str, 0, 0 );
141 if ( (s = strchr( str, '=' )) == NULL ) {
148 f = (Filter *) ch_calloc( 1, sizeof(Filter) );
152 f->f_choice = LDAP_FILTER_LE;
156 f->f_choice = LDAP_FILTER_GE;
160 f->f_choice = LDAP_FILTER_APPROX;
164 if ( strchr( value, '*' ) == NULL ) {
165 f->f_choice = LDAP_FILTER_EQUALITY;
166 } else if ( strcmp( value, "*" ) == 0 ) {
167 f->f_choice = LDAP_FILTER_PRESENT;
169 f->f_choice = LDAP_FILTER_SUBSTRINGS;
170 f->f_sub_type = ch_strdup( str );
171 if ( str2subvals( value, f ) != 0 ) {
182 if ( f->f_choice == LDAP_FILTER_PRESENT ) {
183 f->f_type = ch_strdup( str );
185 f->f_avtype = ch_strdup( str );
186 f->f_avvalue.bv_val = ch_strdup( value );
187 f->f_avvalue.bv_len = strlen( value );
196 str2subvals( char *val, Filter *f )
201 Debug( LDAP_DEBUG_FILTER, "str2subvals \"%s\"\n", val, 0, 0 );
204 while ( val != NULL && *val ) {
205 if ( (nextstar = strchr( val, '*' )) != NULL )
208 if ( gotstar == 0 ) {
209 f->f_sub_initial = ch_strdup( val );
210 } else if ( nextstar == NULL ) {
211 f->f_sub_final = ch_strdup( val );
213 charray_add( &f->f_sub_any, ch_strdup( val ) );
217 if ( nextstar != NULL )
226 * find_matching_paren - return a pointer to the right paren in s matching
227 * the left paren to which *s currently points
231 find_matching_paren( char *s )
241 else if ( *s == ')' )
244 if ( balance == 0 ) {
247 if ( *s == '\\' && ! escape )