1 /*
2 * The contents of this file are subject to the Netscape Public
3 * License Version 1.1 (the "License"); you may not use this file
4 * except in compliance with the License. You may obtain a copy of
5 * the License at http://www.mozilla.org/NPL/
6 *
7 * Software distributed under the License is distributed on an "AS
8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
9 * implied. See the License for the specific language governing
10 * rights and limitations under the License.
11 *
12 * The Original Code is Mozilla Communicator client code, released
13 * March 31, 1998.
14 *
15 * The Initial Developer of the Original Code is Netscape
16 * Communications Corporation. Portions created by Netscape are
17 * Copyright (C) 1998-1999 Netscape Communications Corporation. All
18 * Rights Reserved.
19 *
20 * Contributor(s):
21 */
22 /*
23 * Copyright (c) 1993, 1994 Regents of the University of Michigan.
24 * All rights reserved.
25 *
26 * Redistribution and use in source and binary forms are permitted
27 * provided that this notice is preserved and that due credit is given
28 * to the University of Michigan at Ann Arbor. The name of the University
29 * may not be used to endorse or promote products derived from this
30 * software without specific prior written permission. This software
31 * is provided ``as is'' without express or implied warranty.
32 */
33 /*
34 * dsparse.c: parsing routines used by display template and search
35 * preference file library routines for LDAP clients.
36 *
37 */
38
39 #include "ldap-int.h"
40
41 static int next_line( char **bufp, long *blenp, char **linep );
42 static char *next_token( char ** sp );
43
44 int
ldap_next_line_tokens(char ** bufp,long * blenp,char *** toksp)45 ldap_next_line_tokens( char **bufp, long *blenp, char ***toksp )
46 {
47 char *p, *line, *token, **toks;
48 int rc, tokcnt;
49
50 *toksp = NULL;
51
52 if (( rc = next_line( bufp, blenp, &line )) <= 0 ) {
53 return( rc );
54 }
55
56 if (( toks = (char **)NSLDAPI_CALLOC( 1, sizeof( char * ))) == NULL ) {
57 NSLDAPI_FREE( line );
58 return( -1 );
59 }
60 tokcnt = 0;
61
62 p = line;
63 while (( token = next_token( &p )) != NULL ) {
64 if (( toks = (char **)NSLDAPI_REALLOC( toks, ( tokcnt + 2 ) *
65 sizeof( char * ))) == NULL ) {
66 NSLDAPI_FREE( (char *)toks );
67 NSLDAPI_FREE( line );
68 return( -1 );
69 }
70 toks[ tokcnt ] = token;
71 toks[ ++tokcnt ] = NULL;
72 }
73
74 if ( tokcnt == 1 && strcasecmp( toks[ 0 ], "END" ) == 0 ) {
75 tokcnt = 0;
76 ldap_free_strarray( toks );
77 toks = NULL;
78 }
79
80 NSLDAPI_FREE( line );
81
82 if ( tokcnt == 0 ) {
83 if ( toks != NULL ) {
84 NSLDAPI_FREE( (char *)toks );
85 }
86 } else {
87 *toksp = toks;
88 }
89
90 return( tokcnt );
91 }
92
93
94 static int
next_line(char ** bufp,long * blenp,char ** linep)95 next_line( char **bufp, long *blenp, char **linep )
96 {
97 char *linestart, *line, *p;
98 long plen;
99
100 linestart = *bufp;
101 p = *bufp;
102 plen = *blenp;
103
104 do {
105 for ( linestart = p; plen > 0; ++p, --plen ) {
106 if ( *p == '\r' ) {
107 if ( plen > 1 && *(p+1) == '\n' ) {
108 ++p;
109 --plen;
110 }
111 break;
112 }
113
114 if ( *p == '\n' ) {
115 if ( plen > 1 && *(p+1) == '\r' ) {
116 ++p;
117 --plen;
118 }
119 break;
120 }
121 }
122 ++p;
123 --plen;
124 } while ( plen > 0 && ( *linestart == '#' || linestart + 1 == p ));
125
126
127 *bufp = p;
128 *blenp = plen;
129
130
131 if ( plen <= 0 ) {
132 *linep = NULL;
133 return( 0 ); /* end of file */
134 }
135
136 if (( line = NSLDAPI_MALLOC( p - linestart )) == NULL ) {
137 *linep = NULL;
138 return( -1 ); /* fatal error */
139 }
140
141 SAFEMEMCPY( line, linestart, p - linestart );
142 line[ p - linestart - 1 ] = '\0';
143 *linep = line;
144 return( strlen( line ));
145 }
146
147
148 static char *
next_token(char ** sp)149 next_token( char **sp )
150 {
151 int in_quote = 0;
152 char *p, *tokstart, *t;
153
154 if ( **sp == '\0' ) {
155 return( NULL );
156 }
157
158 p = *sp;
159
160 while ( ldap_utf8isspace( p )) { /* skip leading white space */
161 ++p;
162 }
163
164 if ( *p == '\0' ) {
165 return( NULL );
166 }
167
168 if ( *p == '\"' ) {
169 in_quote = 1;
170 ++p;
171 }
172 t = tokstart = p;
173
174 for ( ;; ) {
175 if ( *p == '\0' || ( ldap_utf8isspace( p ) && !in_quote )) {
176 if ( *p != '\0' ) {
177 ++p;
178 }
179 *t++ = '\0'; /* end of token */
180 break;
181 }
182
183 if ( *p == '\"' ) {
184 in_quote = !in_quote;
185 ++p;
186 } else {
187 *t++ = *p++;
188 }
189 }
190
191 *sp = p;
192
193 if ( t == tokstart ) {
194 return( NULL );
195 }
196
197 return( nsldapi_strdup( tokstart ));
198 }
199
200
201 void
ldap_free_strarray(char ** sap)202 ldap_free_strarray( char **sap )
203 {
204 int i;
205
206 if ( sap != NULL ) {
207 for ( i = 0; sap[ i ] != NULL; ++i ) {
208 NSLDAPI_FREE( sap[ i ] );
209 }
210 NSLDAPI_FREE( (char *)sap );
211 }
212 }
213