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- /* line64.c - routines for dealing with the slapd line format */
- /* $OpenLDAP: pkg/ldap/libraries/libldif/line64.c,v 1.18.2.6 2000/10/03 20:23:04 kurt Exp $ */
- /*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
- */
-
- #include "portable.h"
-
- #include <stdio.h>
-
- #include <ac/stdlib.h>
- #include <ac/ctype.h>
-
- #include <ac/string.h>
- #include <ac/socket.h>
- #include <ac/time.h>
-
- int ldif_debug = 0;
-
- #include "ldap_log.h"
- #include "lber_pvt.h"
- #include "ldif.h"
-
- #define RIGHT2 0x03
- #define RIGHT4 0x0f
- #define CONTINUED_LINE_MARKER '\001'
-
- #ifdef CSRIMALLOC
- #define ber_memalloc malloc
- #define ber_memcalloc calloc
- #define ber_memrealloc realloc
- #define ber_strdup strdup
- #endif
-
- static const char nib2b64[0x40] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
- static const unsigned char b642nib[0x80] = {
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
- 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
- 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
- 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
- 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
- 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
- 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
- 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
- 0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff
- };
-
- /*
- * ldif_parse_line - takes a line of the form "type:[:] value" and splits it
- * into components "type" and "value". if a double colon separates type from
- * value, then value is encoded in base 64, and parse_line un-decodes it
- * (in place) before returning.
- */
-
- int
- ldif_parse_line(
- LDAP_CONST char *line,
- char **typep,
- char **valuep,
- ber_len_t *vlenp
- )
- {
- char *s, *p, *d;
- char nib;
- int b64, url;
- char *freeme, *type, *value;
- ber_len_t vlen;
-
- *typep = NULL;
- *valuep = NULL;
- *vlenp = 0;
-
- /* skip any leading space */
- while ( isspace( (unsigned char) *line ) ) {
- line++;
- }
-
- freeme = ber_strdup( line );
-
- if( freeme == NULL ) {
- ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
- "ldif_parse_line: line malloc failed\n");
- return( -1 );
- }
-
- type = freeme;
-
- s = strchr( type, ':' );
-
- if ( s == NULL ) {
- ber_pvt_log_printf( LDAP_DEBUG_PARSE, ldif_debug,
- "ldif_parse_line: missing ':' after %s\n",
- type );
- ber_memfree( freeme );
- return( -1 );
- }
-
- /* trim any space between type and : */
- for ( p = &s[-1]; p > type && isspace( * (unsigned char *) p ); p-- ) {
- *p = '\0';
- }
- *s++ = '\0';
-
- url = 0;
- b64 = 0;
-
- if ( *s == '\0' ) {
- /* no value */
- value = "";
- vlen = 0;
- goto done;
- }
-
- if ( *s == '<' ) {
- s++;
- url = 1;
- } else if ( *s == ':' ) {
- /* base 64 encoded value */
- s++;
- b64 = 1;
- }
-
- /* skip space between : and value */
- while ( isspace( (unsigned char) *s ) ) {
- s++;
- }
-
- /* check for continued line markers that should be deleted */
- for ( p = s, d = s; *p; p++ ) {
- if ( *p != CONTINUED_LINE_MARKER )
- *d++ = *p;
- }
- *d = '\0';
-
- /* if no value is present, error out */
- if ( *s == '\0' ) {
- ber_pvt_log_printf( LDAP_DEBUG_PARSE, ldif_debug,
- "ldif_parse_line: %s missing %svalue\n", type,
- url ? "URL " : b64 ? "base64 " : "" );
- value = NULL;
- vlen = 0;
- goto done;
- }
-
- if ( b64 ) {
- char *byte = s;
-
- value = s;
-
- for ( p = s, vlen = 0; p < d; p += 4, vlen += 3 ) {
- int i;
- for ( i = 0; i < 4; i++ ) {
- if ( p[i] != '=' && (p[i] & 0x80 ||
- b642nib[ p[i] & 0x7f ] > 0x3f) ) {
- ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
- "ldif_parse_line: %s: invalid base64 encoding"
- " char (%c) 0x%x\n",
- type, p[i], p[i] );
- ber_memfree( freeme );
- return( -1 );
- }
- }
-
- /* first digit */
- nib = b642nib[ p[0] & 0x7f ];
- byte[0] = nib << 2;
- /* second digit */
- nib = b642nib[ p[1] & 0x7f ];
- byte[0] |= nib >> 4;
- byte[1] = (nib & RIGHT4) << 4;
- /* third digit */
- if ( p[2] == '=' ) {
- vlen += 1;
- break;
- }
- nib = b642nib[ p[2] & 0x7f ];
- byte[1] |= nib >> 2;
- byte[2] = (nib & RIGHT2) << 6;
- /* fourth digit */
- if ( p[3] == '=' ) {
- vlen += 2;
- break;
- }
- nib = b642nib[ p[3] & 0x7f ];
- byte[2] |= nib;
-
- byte += 3;
- }
- s[ vlen ] = '\0';
-
- } else if ( url ) {
- if( ldif_fetch_url( s, &value, &vlen ) ) {
- ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
- "ldif_parse_line: %s: URL \"%s\" fetch failed\n",
- type, s );
- ber_memfree( freeme );
- return( -1 );
- }
-
- } else {
- value = s;
- vlen = (int) (d - s);
- }
-
- done:
- type = ber_strdup( type );
-
- if( type == NULL ) {
- ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
- "ldif_parse_line: type malloc failed\n");
- ber_memfree( freeme );
- return( -1 );
- }
-
- if( !url && value != NULL ) {
- p = ber_memalloc( vlen + 1 );
- if( p == NULL ) {
- ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
- "ldif_parse_line: value malloc failed\n");
- ber_memfree( type );
- ber_memfree( freeme );
- return( -1 );
- }
- AC_MEMCPY( p, value, vlen );
- p[vlen] = '\0';
- value = p;
- }
-
- ber_memfree( freeme );
-
- *typep = type;
- *valuep = value;
- *vlenp = vlen;
-
- return( 0 );
- }
-
- /*
- * ldif_getline - return the next "line" (minus newline) of input from a
- * string buffer of lines separated by newlines, terminated by \n\n
- * or \0. this routine handles continued lines, bundling them into
- * a single big line before returning. if a line begins with a white
- * space character, it is a continuation of the previous line. the white
- * space character (nb: only one char), and preceeding newline are changed
- * into CONTINUED_LINE_MARKER chars, to be deleted later by the
- * ldif_parse_line() routine above.
- *
- * ldif_getline will skip over any line which starts '#'.
- *
- * ldif_getline takes a pointer to a pointer to the buffer on the first call,
- * which it updates and must be supplied on subsequent calls.
- */
-
- char *
- ldif_getline( char **next )
- {
- char *line;
-
- do {
- if ( *next == NULL || **next == '\n' || **next == '\0' ) {
- return( NULL );
- }
-
- line = *next;
-
- while ( (*next = strchr( *next, '\n' )) != NULL ) {
- unsigned char c = *(*next + 1);
-
- if ( !isspace( c ) || c == '\n' ) {
- *(*next)++ = '\0';
- break;
- }
-
- **next = CONTINUED_LINE_MARKER;
- *(*next+1) = CONTINUED_LINE_MARKER;
- (*next)++;
- }
- } while( *line == '#' );
-
- return( line );
- }
-
- /* compatibility with U-Mich off by one bug */
- #define LDIF_KLUDGE 1
-
- void
- ldif_sput(
- char **out,
- int type,
- LDAP_CONST char *name,
- LDAP_CONST char *val,
- ber_len_t vlen )
- {
- const unsigned char *byte, *stop;
- unsigned char buf[3];
- unsigned long bits;
- char *save;
- int pad;
-
- ber_len_t savelen;
- ber_len_t len=0;
- ber_len_t i;
-
- /* prefix */
- switch( type ) {
- case LDIF_PUT_COMMENT:
- *(*out)++ = '#';
- len++;
-
- if( vlen ) {
- *(*out)++ = ' ';
- len++;
- }
-
- break;
-
- case LDIF_PUT_SEP:
- *(*out)++ = '\n';
- return;
- }
-
- /* name (attribute type) */
- if( name != NULL ) {
- /* put the name + ":" */
- for ( i=0 ; name[i]; i++ ) {
- *(*out)++ = name[i];
- len++;
- }
-
- if( type != LDIF_PUT_COMMENT ) {
- *(*out)++ = ':';
- len++;
- }
-
- }
- #ifdef LDAP_DEBUG
- else {
- assert( type == LDIF_PUT_COMMENT );
- }
- #endif
-
- if( vlen == 0 ) {
- *(*out)++ = '\n';
- return;
- }
-
- switch( type ) {
- case LDIF_PUT_NOVALUE:
- *(*out)++ = '\n';
- return;
-
- case LDIF_PUT_URL: /* url value */
- *(*out)++ = '<';
- len++;
- break;
-
- case LDIF_PUT_B64: /* base64 value */
- *(*out)++ = ':';
- len++;
- break;
- }
-
- switch( type ) {
- case LDIF_PUT_TEXT:
- case LDIF_PUT_URL:
- case LDIF_PUT_B64:
- *(*out)++ = ' ';
- len++;
- /* fall-thru */
-
- case LDIF_PUT_COMMENT:
- /* pre-encoded names */
- for ( i=0; i < vlen; i++ ) {
- if ( len > LDIF_LINE_WIDTH ) {
- *(*out)++ = '\n';
- *(*out)++ = ' ';
- len = 1;
- }
-
- *(*out)++ = val[i];
- len++;
- }
- *(*out)++ = '\n';
- return;
- }
-
- save = *out;
- savelen = len;
-
- *(*out)++ = ' ';
- len++;
-
- stop = (const unsigned char *) (val + vlen);
-
- if ( type == LDIF_PUT_VALUE
- && isgraph( val[0] ) && val[0] != ':' && val[0] != '<'
- && isgraph( val[vlen-1] )
- #ifndef LDAP_BINARY_DEBUG
- && strstr( name, ";binary" ) == NULL
- #endif
- #ifndef LDAP_PASSWD_DEBUG
- && strcasecmp( name, "userPassword" ) != 0 /* encode userPassword */
- && strcasecmp( name, "2.5.4.35" ) != 0 /* encode userPassword */
- #endif
- ) {
- int b64 = 0;
-
- for ( byte = (const unsigned char *) val; byte < stop;
- byte++, len++ )
- {
- if ( !isascii( *byte ) || !isprint( *byte ) ) {
- b64 = 1;
- break;
- }
- if ( len > LDIF_LINE_WIDTH+LDIF_KLUDGE ) {
- *(*out)++ = '\n';
- *(*out)++ = ' ';
- len = 1;
- }
- *(*out)++ = *byte;
- }
-
- if( !b64 ) {
- *(*out)++ = '\n';
- return;
- }
- }
-
- *out = save;
- *(*out)++ = ':';
- *(*out)++ = ' ';
- len = savelen + 2;
-
- /* convert to base 64 (3 bytes => 4 base 64 digits) */
- for ( byte = (const unsigned char *) val;
- byte < stop - 2;
- byte += 3 )
- {
- bits = (byte[0] & 0xff) << 16;
- bits |= (byte[1] & 0xff) << 8;
- bits |= (byte[2] & 0xff);
-
- for ( i = 0; i < 4; i++, len++, bits <<= 6 ) {
- if ( len > LDIF_LINE_WIDTH+LDIF_KLUDGE ) {
- *(*out)++ = '\n';
- *(*out)++ = ' ';
- len = 1;
- }
-
- /* get b64 digit from high order 6 bits */
- *(*out)++ = nib2b64[ (bits & 0xfc0000L) >> 18 ];
- }
- }
-
- /* add padding if necessary */
- if ( byte < stop ) {
- for ( i = 0; byte + i < stop; i++ ) {
- buf[i] = byte[i];
- }
- for ( pad = 0; i < 3; i++, pad++ ) {
- buf[i] = '\0';
- }
- byte = buf;
- bits = (byte[0] & 0xff) << 16;
- bits |= (byte[1] & 0xff) << 8;
- bits |= (byte[2] & 0xff);
-
- for ( i = 0; i < 4; i++, len++, bits <<= 6 ) {
- if ( len > LDIF_LINE_WIDTH+LDIF_KLUDGE ) {
- *(*out)++ = '\n';
- *(*out)++ = ' ';
- len = 1;
- }
-
- if( i + pad < 4 ) {
- /* get b64 digit from low order 6 bits */
- *(*out)++ = nib2b64[ (bits & 0xfc0000L) >> 18 ];
- } else {
- *(*out)++ = '=';
- }
- }
- }
- *(*out)++ = '\n';
- }
-
-
- /*
- * ldif_type_and_value return BER malloc'd, zero-terminated LDIF line
- */
- char *
- ldif_put(
- int type,
- LDAP_CONST char *name,
- LDAP_CONST char *val,
- ber_len_t vlen )
- {
- char *buf, *p;
- ber_len_t nlen;
-
- nlen = ( name != NULL ) ? strlen( name ) : 0;
-
- buf = (char *) ber_memalloc( LDIF_SIZE_NEEDED( nlen, vlen ) + 1 );
-
- if ( buf == NULL ) {
- ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
- "ldif_type_and_value: malloc failed!" );
- return NULL;
- }
-
- p = buf;
- ldif_sput( &p, type, name, val, vlen );
- *p = '\0';
-
- return( buf );
- }
-
- int ldif_is_not_printable(
- LDAP_CONST char *val,
- ber_len_t vlen )
- {
- if( vlen == 0 || val == NULL ) {
- return -1;
- }
-
- if( isgraph( val[0] ) && val[0] != ':' && val[0] != '<' &&
- isgraph( val[vlen-1] ) )
- {
- ber_len_t i;
-
- for ( i = 0; val[i]; i++ ) {
- if ( !isascii( val[i] ) || !isprint( val[i] ) ) {
- return 1;
- }
- }
-
- return 0;
- }
-
- return 1;
- }
-
- /*
- * slap_read_ldif - read an ldif record. Return 1 for success, 0 for EOF.
- */
- int
- ldif_read_record(
- FILE *fp,
- int *lno, /* ptr to line number counter */
- char **bufp, /* ptr to malloced output buffer */
- int *buflenp ) /* ptr to length of *bufp */
- {
- char linebuf[BUFSIZ], *line, *nbufp;
- ber_len_t lcur = 0, len, linesize;
- int last_ch = '\n', found_entry = 0, stop;
-
- line = linebuf;
- linesize = sizeof( linebuf );
-
- for ( stop = feof( fp ); !stop; last_ch = line[len-1] ) {
- if ( fgets( line, linesize, fp ) == NULL ) {
- stop = 1;
- /* Add \n in case the file does not end with newline */
- line = "\n";
- }
- len = strlen( line );
-
- if ( last_ch == '\n' ) {
- (*lno)++;
-
- if ( line[0] == '\n' ) {
- if ( !found_entry )
- continue;
- break;
- }
-
- if ( !found_entry ) {
- /* Found a new entry */
- found_entry = 1;
-
- if ( isdigit( (unsigned char) line[0] ) ) {
- /* skip index */
- continue;
- }
- }
- }
-
- if ( *buflenp - lcur <= len ) {
- *buflenp += len + BUFSIZ;
- nbufp = ber_memrealloc( *bufp, *buflenp );
- if( nbufp == NULL ) {
- return 0;
- }
- *bufp = nbufp;
- }
- strcpy( *bufp + lcur, line );
- lcur += len;
- }
-
- return( found_entry );
- }
-