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Commit 8300b022 authored by Quanah Gibson-Mount's avatar Quanah Gibson-Mount
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ITS#6611

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View file @ 8300b022
......@@ -2,6 +2,7 @@ OpenLDAP 2.4 Change Log
OpenLDAP 2.4.24 Engineering
Fixed liblber to not close invalid sockets (ITS#6585)
Fixed slapd acl parsing overflow (ITS#6611)
Fixed slapd modify to return actual error (ITS#6581)
Fixed slapd-bdb entry cache delete failure (ITS#6577)
Fixed slapo-ppolicy don't update opattrs on consumers (ITS#6608)
......
servers/slapd/aclparse.c
+ 155
− 112
View file @ 8300b022
......@@ -57,6 +57,9 @@ const char *style_strings[] = {
NULL
};
#define ACLBUF_CHUNKSIZE 8192
static struct berval aclbuf;
static void split(char *line, int splitchar, char **left, char **right);
static void access_append(Access **l, Access *a);
static void access_free( Access *a );
......@@ -2450,6 +2453,11 @@ acl_destroy( AccessControl *a )
n = a->acl_next;
acl_free( a );
}
if ( !BER_BVISNULL( &aclbuf ) ) {
ch_free( aclbuf.bv_val );
BER_BVZERO( &aclbuf );
}
}
char *
......@@ -2527,9 +2535,39 @@ str2access( const char *str )
return( ACL_INVALID_ACCESS );
}
#define ACLBUF_MAXLEN 8192
static char *
safe_strncopy( char *ptr, const char *src, size_t n, struct berval *buf )
{
while ( ptr + n >= buf->bv_val + buf->bv_len ) {
char *tmp = ch_realloc( buf->bv_val, 2*buf->bv_len );
if ( tmp == NULL ) {
return NULL;
}
ptr = tmp + (ptr - buf->bv_val);
buf->bv_val = tmp;
buf->bv_len *= 2;
}
return lutil_strncopy( ptr, src, n );
}
static char *
safe_strcopy( char *ptr, const char *s, struct berval *buf )
{
size_t n = strlen( s );
return safe_strncopy( ptr, s, n, buf );
}
static char *
safe_strbvcopy( char *ptr, const struct berval *bv, struct berval *buf )
{
return safe_strncopy( ptr, bv->bv_val, bv->bv_len, buf );
}
static char aclbuf[ACLBUF_MAXLEN];
#define acl_safe_strcopy( ptr, s ) safe_strcopy( (ptr), (s), &aclbuf )
#define acl_safe_strncopy( ptr, s, n ) safe_strncopy( (ptr), (s), (n), &aclbuf )
#define acl_safe_strbvcopy( ptr, bv ) safe_strbvcopy( (ptr), (bv), &aclbuf )
static char *
dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
......@@ -2537,7 +2575,7 @@ dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
*ptr++ = ' ';
if ( is_realdn ) {
ptr = lutil_strcopy( ptr, "real" );
ptr = acl_safe_strcopy( ptr, "real" );
}
if ( ber_bvccmp( &bdn->a_pat, '*' ) ||
......@@ -2549,33 +2587,34 @@ dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
assert( ! ber_bvccmp( &bdn->a_pat, '*' ) );
}
ptr = lutil_strcopy( ptr, bdn->a_pat.bv_val );
ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
if ( bdn->a_style == ACL_STYLE_SELF && bdn->a_self_level != 0 ) {
int n = sprintf( ptr, ".level{%d}", bdn->a_self_level );
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), ".level{%d}", bdn->a_self_level );
if ( n > 0 ) {
ptr += n;
ptr = acl_safe_strncopy( ptr, buf, n );
} /* else ? */
}
} else {
ptr = lutil_strcopy( ptr, "dn." );
ptr = acl_safe_strcopy( ptr, "dn." );
if ( bdn->a_style == ACL_STYLE_BASE )
ptr = lutil_strcopy( ptr, style_base );
ptr = acl_safe_strcopy( ptr, style_base );
else
ptr = lutil_strcopy( ptr, style_strings[bdn->a_style] );
ptr = acl_safe_strcopy( ptr, style_strings[bdn->a_style] );
if ( bdn->a_style == ACL_STYLE_LEVEL ) {
int n = sprintf( ptr, "{%d}", bdn->a_level );
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), "{%d}", bdn->a_level );
if ( n > 0 ) {
ptr += n;
ptr = acl_safe_strncopy( ptr, buf, n );
} /* else ? */
}
if ( bdn->a_expand ) {
ptr = lutil_strcopy( ptr, ",expand" );
ptr = acl_safe_strcopy( ptr, ",expand" );
}
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, bdn->a_pat.bv_val );
*ptr++ = '"';
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
return ptr;
}
......@@ -2585,88 +2624,83 @@ access2text( Access *b, char *ptr )
{
char maskbuf[ACCESSMASK_MAXLEN];
ptr = lutil_strcopy( ptr, "\tby" );
ptr = acl_safe_strcopy( ptr, "\tby" );
if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
ptr = dnaccess2text( &b->a_dn, ptr, 0 );
}
if ( b->a_dn_at ) {
ptr = lutil_strcopy( ptr, " dnattr=" );
ptr = lutil_strcopy( ptr, b->a_dn_at->ad_cname.bv_val );
ptr = acl_safe_strcopy( ptr, " dnattr=" );
ptr = acl_safe_strbvcopy( ptr, &b->a_dn_at->ad_cname );
}
if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
ptr = dnaccess2text( &b->a_realdn, ptr, 1 );
}
if ( b->a_realdn_at ) {
ptr = lutil_strcopy( ptr, " realdnattr=" );
ptr = lutil_strcopy( ptr, b->a_realdn_at->ad_cname.bv_val );
ptr = acl_safe_strcopy( ptr, " realdnattr=" );
ptr = acl_safe_strbvcopy( ptr, &b->a_realdn_at->ad_cname );
}
if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
ptr = lutil_strcopy( ptr, " group/" );
ptr = lutil_strcopy( ptr, b->a_group_oc ?
ptr = acl_safe_strcopy( ptr, " group/" );
ptr = acl_safe_strcopy( ptr, b->a_group_oc ?
b->a_group_oc->soc_cname.bv_val : SLAPD_GROUP_CLASS );
*ptr++ = '/';
ptr = lutil_strcopy( ptr, b->a_group_at ?
ptr = acl_safe_strcopy( ptr, "/" );
ptr = acl_safe_strcopy( ptr, b->a_group_at ?
b->a_group_at->ad_cname.bv_val : SLAPD_GROUP_ATTR );
*ptr++ = '.';
ptr = lutil_strcopy( ptr, style_strings[b->a_group_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, b->a_group_pat.bv_val );
*ptr++ = '"';
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_group_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_group_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
ptr = lutil_strcopy( ptr, " peername" );
*ptr++ = '.';
ptr = lutil_strcopy( ptr, style_strings[b->a_peername_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, b->a_peername_pat.bv_val );
*ptr++ = '"';
ptr = acl_safe_strcopy( ptr, " peername" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_peername_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_peername_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
ptr = lutil_strcopy( ptr, " sockname" );
*ptr++ = '.';
ptr = lutil_strcopy( ptr, style_strings[b->a_sockname_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, b->a_sockname_pat.bv_val );
*ptr++ = '"';
ptr = acl_safe_strcopy( ptr, " sockname" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockname_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_sockname_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
ptr = lutil_strcopy( ptr, " domain" );
*ptr++ = '.';
ptr = lutil_strcopy( ptr, style_strings[b->a_domain_style] );
ptr = acl_safe_strcopy( ptr, " domain" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_domain_style] );
if ( b->a_domain_expand ) {
ptr = lutil_strcopy( ptr, ",expand" );
ptr = acl_safe_strcopy( ptr, ",expand" );
}
*ptr++ = '=';
ptr = lutil_strcopy( ptr, b->a_domain_pat.bv_val );
ptr = acl_safe_strcopy( ptr, "=" );
ptr = acl_safe_strbvcopy( ptr, &b->a_domain_pat );
}
if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
ptr = lutil_strcopy( ptr, " sockurl" );
*ptr++ = '.';
ptr = lutil_strcopy( ptr, style_strings[b->a_sockurl_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, b->a_sockurl_pat.bv_val );
*ptr++ = '"';
ptr = acl_safe_strcopy( ptr, " sockurl" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockurl_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_sockurl_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
ptr = lutil_strcopy( ptr, " set" );
*ptr++ = '.';
ptr = lutil_strcopy( ptr, style_strings[b->a_set_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, b->a_set_pat.bv_val );
*ptr++ = '"';
ptr = acl_safe_strcopy( ptr, " set" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_set_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_set_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
#ifdef SLAP_DYNACL
......@@ -2678,7 +2712,7 @@ access2text( Access *b, char *ptr )
struct berval bv = BER_BVNULL;
(void)( *da->da_unparse )( da->da_private, &bv );
assert( !BER_BVISNULL( &bv ) );
ptr = lutil_strcopy( ptr, bv.bv_val );
ptr = acl_safe_strbvcopy( ptr, &bv );
ch_free( bv.bv_val );
}
}
......@@ -2687,43 +2721,51 @@ access2text( Access *b, char *ptr )
/* Security Strength Factors */
if ( b->a_authz.sai_ssf ) {
ptr += sprintf( ptr, " ssf=%u",
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " ssf=%u",
b->a_authz.sai_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
if ( b->a_authz.sai_transport_ssf ) {
ptr += sprintf( ptr, " transport_ssf=%u",
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " transport_ssf=%u",
b->a_authz.sai_transport_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
if ( b->a_authz.sai_tls_ssf ) {
ptr += sprintf( ptr, " tls_ssf=%u",
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " tls_ssf=%u",
b->a_authz.sai_tls_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
if ( b->a_authz.sai_sasl_ssf ) {
ptr += sprintf( ptr, " sasl_ssf=%u",
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " sasl_ssf=%u",
b->a_authz.sai_sasl_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
*ptr++ = ' ';
ptr = acl_safe_strcopy( ptr, " " );
if ( b->a_dn_self ) {
ptr = lutil_strcopy( ptr, "self" );
ptr = acl_safe_strcopy( ptr, "self" );
} else if ( b->a_realdn_self ) {
ptr = lutil_strcopy( ptr, "realself" );
ptr = acl_safe_strcopy( ptr, "realself" );
}
ptr = lutil_strcopy( ptr, accessmask2str( b->a_access_mask, maskbuf, 0 ));
ptr = acl_safe_strcopy( ptr, accessmask2str( b->a_access_mask, maskbuf, 0 ));
if ( !maskbuf[0] ) ptr--;
if( b->a_type == ACL_BREAK ) {
ptr = lutil_strcopy( ptr, " break" );
ptr = acl_safe_strcopy( ptr, " break" );
} else if( b->a_type == ACL_CONTINUE ) {
ptr = lutil_strcopy( ptr, " continue" );
ptr = acl_safe_strcopy( ptr, " continue" );
} else if( b->a_type != ACL_STOP ) {
ptr = lutil_strcopy( ptr, " unknown-control" );
ptr = acl_safe_strcopy( ptr, " unknown-control" );
} else {
if ( !maskbuf[0] ) ptr = lutil_strcopy( ptr, " stop" );
if ( !maskbuf[0] ) ptr = acl_safe_strcopy( ptr, " stop" );
}
*ptr++ = '\n';
ptr = acl_safe_strcopy( ptr, "\n" );
return ptr;
}
......@@ -2735,35 +2777,37 @@ acl_unparse( AccessControl *a, struct berval *bv )
char *ptr;
int to = 0;
bv->bv_val = aclbuf;
if ( BER_BVISNULL( &aclbuf ) ) {
aclbuf.bv_val = ch_malloc( ACLBUF_CHUNKSIZE );
aclbuf.bv_len = ACLBUF_CHUNKSIZE;
}
bv->bv_len = 0;
ptr = bv->bv_val;
ptr = aclbuf.bv_val;
ptr = lutil_strcopy( ptr, "to" );
ptr = acl_safe_strcopy( ptr, "to" );
if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
to++;
ptr = lutil_strcopy( ptr, " dn." );
ptr = acl_safe_strcopy( ptr, " dn." );
if ( a->acl_dn_style == ACL_STYLE_BASE )
ptr = lutil_strcopy( ptr, style_base );
ptr = acl_safe_strcopy( ptr, style_base );
else
ptr = lutil_strcopy( ptr, style_strings[a->acl_dn_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, a->acl_dn_pat.bv_val );
ptr = lutil_strcopy( ptr, "\"\n" );
ptr = acl_safe_strcopy( ptr, style_strings[a->acl_dn_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &a->acl_dn_pat );
ptr = acl_safe_strcopy( ptr, "\"\n" );
}
if ( a->acl_filter != NULL ) {
struct berval bv = BER_BVNULL;
struct berval fbv = BER_BVNULL;
to++;
filter2bv( a->acl_filter, &bv );
ptr = lutil_strcopy( ptr, " filter=\"" );
ptr = lutil_strcopy( ptr, bv.bv_val );
*ptr++ = '"';
*ptr++ = '\n';
ch_free( bv.bv_val );
filter2bv( a->acl_filter, &fbv );
ptr = acl_safe_strcopy( ptr, " filter=\"" );
ptr = acl_safe_strbvcopy( ptr, &fbv );
ptr = acl_safe_strcopy( ptr, "\"\n" );
ch_free( fbv.bv_val );
}
if ( a->acl_attrs != NULL ) {
......@@ -2771,45 +2815,44 @@ acl_unparse( AccessControl *a, struct berval *bv )
AttributeName *an;
to++;
ptr = lutil_strcopy( ptr, " attrs=" );
ptr = acl_safe_strcopy( ptr, " attrs=" );
for ( an = a->acl_attrs; an && !BER_BVISNULL( &an->an_name ); an++ ) {
if ( ! first ) *ptr++ = ',';
if ( ! first ) ptr = acl_safe_strcopy( ptr, ",");
if (an->an_oc) {
*ptr++ = ( an->an_flags & SLAP_AN_OCEXCLUDE ) ? '!' : '@';
ptr = lutil_strcopy( ptr, an->an_oc->soc_cname.bv_val );
ptr = acl_safe_strcopy( ptr, ( an->an_flags & SLAP_AN_OCEXCLUDE ) ? "!" : "@" );
ptr = acl_safe_strbvcopy( ptr, &an->an_oc->soc_cname );
} else {
ptr = lutil_strcopy( ptr, an->an_name.bv_val );
ptr = acl_safe_strbvcopy( ptr, &an->an_name );
}
first = 0;
}
*ptr++ = '\n';
ptr = acl_safe_strcopy( ptr, "\n" );
}
if ( !BER_BVISEMPTY( &a->acl_attrval ) ) {
to++;
ptr = lutil_strcopy( ptr, " val." );
ptr = acl_safe_strcopy( ptr, " val." );
if ( a->acl_attrval_style == ACL_STYLE_BASE &&
a->acl_attrs[0].an_desc->ad_type->sat_syntax ==
slap_schema.si_syn_distinguishedName )
ptr = lutil_strcopy( ptr, style_base );
ptr = acl_safe_strcopy( ptr, style_base );
else
ptr = lutil_strcopy( ptr, style_strings[a->acl_attrval_style] );
*ptr++ = '=';
*ptr++ = '"';
ptr = lutil_strcopy( ptr, a->acl_attrval.bv_val );
*ptr++ = '"';
*ptr++ = '\n';
ptr = acl_safe_strcopy( ptr, style_strings[a->acl_attrval_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &a->acl_attrval );
ptr = acl_safe_strcopy( ptr, "\"\n" );
}
if( !to ) {
ptr = lutil_strcopy( ptr, " *\n" );
if ( !to ) {
ptr = acl_safe_strcopy( ptr, " *\n" );
}
for ( b = a->acl_access; b != NULL; b = b->a_next ) {
ptr = access2text( b, ptr );
}
*ptr = '\0';
bv->bv_val = aclbuf.bv_val;
bv->bv_len = ptr - bv->bv_val;
}
......
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