1 /* line64.c - routines for dealing with the slapd line format */
7 #include <sys/socket.h>
14 #define CONTINUED_LINE_MARKER '\001'
16 static char nib2b64[0x40f] =
17 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
19 static unsigned char b642nib[0x80] = {
20 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
21 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
22 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
23 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
24 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
25 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
26 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
27 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
28 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
29 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
30 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
31 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
32 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
33 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
34 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
35 0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff
39 * str_parse_line - takes a line of the form "type:[:] value" and splits it
40 * into components "type" and "value". if a double colon separates type from
41 * value, then value is encoded in base 64, and parse_line un-decodes it
42 * (in place) before returning.
53 char *p, *s, *d, *byte, *stop;
57 /* skip any leading space */
58 while ( isspace( *line ) ) {
63 for ( s = line; *s && *s != ':'; s++ )
66 Debug( LDAP_DEBUG_PARSE, "parse_line missing ':'\n", 0, 0, 0 );
70 /* trim any space between type and : */
71 for ( p = s - 1; p > line && isspace( *p ); p-- ) {
76 /* check for double : - indicates base 64 encoded value */
81 /* single : - normally encoded value */
86 /* skip space between : and value */
87 while ( isspace( *s ) ) {
91 /* if no value is present, error out */
93 Debug( LDAP_DEBUG_PARSE, "parse_line missing value\n", 0,0,0 );
97 /* check for continued line markers that should be deleted */
98 for ( p = s, d = s; *p; p++ ) {
99 if ( *p != CONTINUED_LINE_MARKER )
106 stop = strchr( s, '\0' );
108 for ( p = s, *vlen = 0; p < stop; p += 4, *vlen += 3 ) {
109 for ( i = 0; i < 3; i++ ) {
110 if ( p[i] != '=' && (p[i] & 0x80 ||
111 b642nib[ p[i] & 0x7f ] > 0x3f) ) {
112 Debug( LDAP_DEBUG_ANY,
113 "invalid base 64 encoding char (%c) 0x%x\n",
120 nib = b642nib[ p[0] & 0x7f ];
123 nib = b642nib[ p[1] & 0x7f ];
125 byte[1] = (nib & RIGHT4) << 4;
131 nib = b642nib[ p[2] & 0x7f ];
133 byte[2] = (nib & RIGHT2) << 6;
139 nib = b642nib[ p[3] & 0x7f ];
146 *vlen = (int) (d - s);
153 * str_getline - return the next "line" (minus newline) of input from a
154 * string buffer of lines separated by newlines, terminated by \n\n
155 * or \0. this routine handles continued lines, bundling them into
156 * a single big line before returning. if a line begins with a white
157 * space character, it is a continuation of the previous line. the white
158 * space character (nb: only one char), and preceeding newline are changed
159 * into CONTINUED_LINE_MARKER chars, to be deleted later by the
160 * str_parse_line() routine above.
162 * it takes a pointer to a pointer to the buffer on the first call,
163 * which it updates and must be supplied on subsequent calls.
167 str_getline( char **next )
172 if ( *next == NULL || **next == '\n' || **next == '\0' ) {
177 while ( (*next = strchr( *next, '\n' )) != NULL ) {
179 if ( isspace( c ) && c != '\n' ) {
180 **next = CONTINUED_LINE_MARKER;
181 *(*next+1) = CONTINUED_LINE_MARKER;
193 put_type_and_value( char **out, char *t, char *val, int vlen )
195 unsigned char *byte, *p, *stop;
196 unsigned char buf[3];
199 int i, b64, pad, len, savelen;
202 /* put the type + ": " */
203 for ( p = (unsigned char *) t; *p; p++, len++ ) {
213 stop = (unsigned char *) (val + vlen);
214 if ( isascii( val[0] ) && isspace( val[0] ) || val[0] == ':' ) {
217 for ( byte = (unsigned char *) val; byte < stop;
219 if ( !isascii( *byte ) || !isprint( *byte ) ) {
223 if ( len > LINE_WIDTH ) {
236 /* convert to base 64 (3 bytes => 4 base 64 digits) */
237 for ( byte = (unsigned char *) val; byte < stop - 2;
239 bits = (byte[0] & 0xff) << 16;
240 bits |= (byte[1] & 0xff) << 8;
241 bits |= (byte[2] & 0xff);
243 for ( i = 0; i < 4; i++, len++, bits <<= 6 ) {
244 if ( len > LINE_WIDTH ) {
250 /* get b64 digit from high order 6 bits */
251 *(*out)++ = nib2b64[ (bits & 0xfc0000L) >> 18 ];
255 /* add padding if necessary */
257 for ( i = 0; byte + i < stop; i++ ) {
260 for ( pad = 0; i < 3; i++, pad++ ) {
264 bits = (byte[0] & 0xff) << 16;
265 bits |= (byte[1] & 0xff) << 8;
266 bits |= (byte[2] & 0xff);
268 for ( i = 0; i < 4; i++, len++, bits <<= 6 ) {
269 if ( len > LINE_WIDTH ) {
275 /* get b64 digit from low order 6 bits */
276 *(*out)++ = nib2b64[ (bits & 0xfc0000L) >> 18 ];
279 for ( ; pad > 0; pad-- ) {
289 ldif_type_and_value( char *type, char *val, int vlen )
291 * return malloc'd, zero-terminated LDIF line
297 tlen = strlen( type );
298 if (( buf = (char *)malloc( LDIF_SIZE_NEEDED( tlen, vlen ) + 1 )) !=
303 put_type_and_value( &p, type, val, vlen );