summaryrefslogtreecommitdiff
path: root/source4/lib/ldb/common/ldb_dn.c
diff options
context:
space:
mode:
authorSimo Sorce <idra@samba.org>2005-08-18 15:02:01 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 13:33:32 -0500
commit3e4c4cff2177af33efdb15f03a1bbcb639505cee (patch)
tree852723e443ca41ef6b1d91dd3c11224eddebbd48 /source4/lib/ldb/common/ldb_dn.c
parenta8d51f87620a688a286603766cbb7edb2b7c6e60 (diff)
downloadsamba-3e4c4cff2177af33efdb15f03a1bbcb639505cee.tar.gz
samba-3e4c4cff2177af33efdb15f03a1bbcb639505cee.tar.bz2
samba-3e4c4cff2177af33efdb15f03a1bbcb639505cee.zip
r9391: Convert all the code to use struct ldb_dn to ohandle ldap like distinguished names
Provide more functions to handle DNs in this form (This used to be commit 692e35b7797e39533dd2a1c4b63d9da30f1eb5ba)
Diffstat (limited to 'source4/lib/ldb/common/ldb_dn.c')
-rw-r--r--source4/lib/ldb/common/ldb_dn.c308
1 files changed, 299 insertions, 9 deletions
diff --git a/source4/lib/ldb/common/ldb_dn.c b/source4/lib/ldb/common/ldb_dn.c
index d13238cc17..dae79fd9e1 100644
--- a/source4/lib/ldb/common/ldb_dn.c
+++ b/source4/lib/ldb/common/ldb_dn.c
@@ -41,8 +41,26 @@
#define LDB_DN_NULL_FAILED(x) if (!(x)) goto failed
+#define LDB_SPECIAL "@SPECIAL"
+
+BOOL ldb_dn_is_special(const struct ldb_dn *dn)
+{
+ if (dn == NULL || dn->comp_num != 1) return 0;
+
+ return ! strcmp(dn->components[0].name, LDB_SPECIAL);
+}
+
+BOOL ldb_dn_check_special(const struct ldb_dn *dn, const char *check)
+{
+ if (dn == NULL || dn->comp_num != 1) return 0;
+
+ return ! strcmp(dn->components[0].value.data, check);
+}
+
static int ldb_dn_is_valid_attribute_name(const char *name)
{
+ if (name == NULL) return 0;
+
while (*name) {
if (! isascii(*name)) {
return 0;
@@ -165,6 +183,8 @@ static int get_quotes_position(const char *source, int *quote_start, int *quote_
{
const char *p;
+ if (source == NULL || quote_start == NULL || quote_end == NULL) return -1;
+
p = source;
/* check if there are quotes surrounding the value */
@@ -197,6 +217,8 @@ static char *seek_to_separator(char *string, const char *separators)
char *p;
int ret, qs, qe;
+ if (string == NULL || separators == NULL) return NULL;
+
p = strchr(string, '=');
LDB_DN_NULL_FAILED(p);
@@ -254,6 +276,11 @@ static struct ldb_dn_component ldb_dn_explode_component(void *mem_ctx, char *raw
char *p;
int ret, qs, qe;
+ if (raw_component == NULL) {
+ dc.name = NULL;
+ return dc;
+ }
+
/* find attribute type/value separator */
p = strchr(raw_component, '=');
LDB_DN_NULL_FAILED(p);
@@ -300,14 +327,10 @@ failed:
return dc;
}
-struct ldb_dn *ldb_dn_explode(void *mem_ctx, const char *dn)
+struct ldb_dn *ldb_dn_new(void *mem_ctx)
{
- struct ldb_dn *edn; /* the exploded dn */
- char *pdn, *p;
+ struct ldb_dn *edn;
- pdn = NULL;
-
- /* Allocate a structure to hold the exploded DN */
edn = talloc(mem_ctx, struct ldb_dn);
LDB_DN_NULL_FAILED(edn);
@@ -315,12 +338,33 @@ struct ldb_dn *ldb_dn_explode(void *mem_ctx, const char *dn)
edn->comp_num = 0;
edn->components = NULL;
+ return edn;
+
+failed:
+ return NULL;
+}
+
+struct ldb_dn *ldb_dn_explode(void *mem_ctx, const char *dn)
+{
+ struct ldb_dn *edn; /* the exploded dn */
+ char *pdn, *p;
+
+ if (dn == NULL) return NULL;
+
+ /* Allocate a structure to hold the exploded DN */
+ edn = ldb_dn_new(mem_ctx);
+
+ /* Empty DNs */
+ if (dn[0] == '\0') {
+ return edn;
+ }
+
/* Special DNs case */
if (dn[0] == '@') {
edn->comp_num = 1;
edn->components = talloc(edn, struct ldb_dn_component);
if (edn->components == NULL) goto failed;
- edn->components[0].name = talloc_strdup(edn->components, "@SPECIAL");
+ edn->components[0].name = talloc_strdup(edn->components, LDB_SPECIAL);
if (edn->components[0].name == NULL) goto failed;
edn->components[0].value.data = talloc_strdup(edn->components, dn);
if (edn->components[0].value.data== NULL) goto failed;
@@ -376,8 +420,10 @@ char *ldb_dn_linearize(void *mem_ctx, const struct ldb_dn *edn)
char *dn, *value;
int i;
+ if (edn == NULL) return NULL;
+
/* Special DNs */
- if ((edn->comp_num == 1) && strcmp("@SPECIAL", edn->components[0].name) == 0) {
+ if (ldb_dn_is_special(edn)) {
dn = talloc_strdup(mem_ctx, edn->components[0].value.data);
return dn;
}
@@ -419,6 +465,10 @@ int ldb_dn_compare_base(struct ldb_context *ldb,
return (dn->comp_num - base->comp_num);
}
+ if (base == NULL || base->comp_num == 0) return 0;
+ if (dn == NULL || dn->comp_num == 0) return -1;
+ if (base->comp_num > dn->comp_num) return -1;
+
/* if the number of components doesn't match they differ */
n0 = base->comp_num - 1;
n1 = dn->comp_num - 1;
@@ -450,6 +500,8 @@ int ldb_dn_compare(struct ldb_context *ldb,
const struct ldb_dn *edn0,
const struct ldb_dn *edn1)
{
+ if (edn0 == NULL || edn1 == NULL) return edn1 - edn0;
+
if (edn0->comp_num != edn1->comp_num)
return (edn1->comp_num - edn0->comp_num);
@@ -462,6 +514,8 @@ int ldb_dn_cmp(struct ldb_context *ldb, const char *dn0, const char *dn1)
struct ldb_dn *edn1;
int ret;
+ if (dn0 == NULL || dn1 == NULL) return dn1 - dn0;
+
edn0 = ldb_dn_explode_casefold(ldb, dn0);
if (edn0 == NULL) return 0;
@@ -488,7 +542,9 @@ struct ldb_dn *ldb_dn_casefold(struct ldb_context *ldb, const struct ldb_dn *edn
struct ldb_dn *cedn;
int i;
- cedn = talloc(ldb, struct ldb_dn);
+ if (edn == NULL) return NULL;
+
+ cedn = ldb_dn_new(ldb);
LDB_DN_NULL_FAILED(cedn);
cedn->comp_num = edn->comp_num;
@@ -521,6 +577,8 @@ struct ldb_dn *ldb_dn_explode_casefold(struct ldb_context *ldb, const char *dn)
{
struct ldb_dn *edn, *cdn;
+ if (dn == NULL) return NULL;
+
edn = ldb_dn_explode(ldb, dn);
if (edn == NULL) return NULL;
@@ -529,3 +587,235 @@ struct ldb_dn *ldb_dn_explode_casefold(struct ldb_context *ldb, const char *dn)
talloc_free(edn);
return cdn;
}
+
+char *ldb_dn_linearize_casefold(struct ldb_context *ldb, const struct ldb_dn *edn)
+{
+ struct ldb_dn *cdn;
+ char *dn;
+
+ if (edn == NULL) return NULL;
+
+ /* Special DNs */
+ if (ldb_dn_is_special(edn)) {
+ dn = talloc_strdup(ldb, edn->components[0].value.data);
+ return dn;
+ }
+
+ cdn = ldb_dn_casefold(ldb, edn);
+ if (cdn == NULL) return NULL;
+
+ dn = ldb_dn_linearize(ldb, cdn);
+ if (dn == NULL) {
+ talloc_free(cdn);
+ return NULL;
+ }
+
+ talloc_free(cdn);
+ return dn;
+}
+
+static struct ldb_dn_component ldb_dn_copy_component(void *mem_ctx, struct ldb_dn_component *src)
+{
+ struct ldb_dn_component dst;
+
+ dst.name = NULL;
+
+ if (src == NULL) {
+ return dst;
+ }
+
+ dst.value = ldb_val_dup(mem_ctx, &(src->value));
+ if (dst.value.data == NULL) {
+ return dst;
+ }
+
+ dst.name = talloc_strdup(mem_ctx, src->name);
+ if (dst.name == NULL) {
+ talloc_free(dst.value.data);
+ }
+
+ return dst;
+}
+
+/* copy specified number of elements of a dn into a new one
+ element are copied from top level up to the unique rdn
+ num_el may be greater then dn->comp_num (see ldb_dn_make_child)
+*/
+struct ldb_dn *ldb_dn_copy_partial(void *mem_ctx, const struct ldb_dn *dn, int num_el)
+{
+ struct ldb_dn *new;
+ int i, n, e;
+
+ if (dn == NULL) return NULL;
+ if (num_el <= 0) return NULL;
+
+ new = ldb_dn_new(mem_ctx);
+ LDB_DN_NULL_FAILED(new);
+
+ new->comp_num = num_el;
+ n = new->comp_num - 1;
+ new->components = talloc_array(new, struct ldb_dn_component, new->comp_num);
+
+ if (dn->comp_num == 0) return new;
+ e = dn->comp_num - 1;
+
+ for (i = 0; i < new->comp_num; i++) {
+ new->components[n - i] = ldb_dn_copy_component(new->components,
+ &(dn->components[e - i]));
+ if ((e - i) == 0) {
+ return new;
+ }
+ }
+
+ return new;
+
+failed:
+ talloc_free(new);
+ return NULL;
+}
+
+struct ldb_dn *ldb_dn_copy(void *mem_ctx, const struct ldb_dn *dn)
+{
+ if (dn == NULL) return NULL;
+ return ldb_dn_copy_partial(mem_ctx, dn, dn->comp_num);
+}
+
+struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, const struct ldb_dn *dn)
+{
+ if (dn == NULL) return NULL;
+ return ldb_dn_copy_partial(mem_ctx, dn, dn->comp_num - 1);
+}
+
+struct ldb_dn_component *ldb_dn_build_component(void *mem_ctx, const char *attr,
+ const char *val)
+{
+ struct ldb_dn_component *dc;
+
+ if (attr == NULL || val == NULL) return NULL;
+
+ dc = talloc(mem_ctx, struct ldb_dn_component);
+ if (dc == NULL) return NULL;
+
+ dc->name = talloc_strdup(dc, attr);
+ if (dc->name == NULL) {
+ talloc_free(dc);
+ return NULL;
+ }
+
+ dc->value.data = talloc_strdup(dc, val);
+ if (dc->value.data == NULL) {
+ talloc_free(dc);
+ return NULL;
+ }
+
+ dc->value.length = strlen(val);
+
+ return dc;
+}
+
+struct ldb_dn *ldb_dn_build_child(void *mem_ctx, const char *attr,
+ const char * value,
+ const struct ldb_dn *base)
+{
+ struct ldb_dn *new;
+ if (! ldb_dn_is_valid_attribute_name(attr)) return NULL;
+ if (value == NULL || value == '\0') return NULL;
+
+ if (base != NULL) {
+ new = ldb_dn_copy_partial(mem_ctx, base, base->comp_num + 1);
+ LDB_DN_NULL_FAILED(new);
+ } else {
+ new = ldb_dn_new(mem_ctx);
+ LDB_DN_NULL_FAILED(new);
+
+ new->comp_num = 1;
+ new->components = talloc_array(new, struct ldb_dn_component, new->comp_num);
+ }
+
+ new->components[0].name = talloc_strdup(new->components, attr);
+ LDB_DN_NULL_FAILED(new->components[0].name);
+
+ new->components[0].value.data = talloc_strdup(new->components, value);
+ LDB_DN_NULL_FAILED(new->components[0].value.data);
+ new->components[0].value.length = strlen(new->components[0].value.data);
+
+ return new;
+
+failed:
+ talloc_free(new);
+ return NULL;
+
+}
+
+struct ldb_dn *ldb_dn_make_child(void *mem_ctx, const struct ldb_dn_component *component,
+ const struct ldb_dn *base)
+{
+ if (component == NULL) return NULL;
+
+ return ldb_dn_build_child(mem_ctx, component->name, component->value.data, base);
+}
+
+struct ldb_dn *ldb_dn_compose(void *mem_ctx, const struct ldb_dn *dn1, const struct ldb_dn *dn2)
+{
+ int i;
+ struct ldb_dn *new;
+
+ if (dn2 == NULL && dn1 == NULL) {
+ return NULL;
+ }
+
+ if (dn2 == NULL) {
+ new = ldb_dn_new(mem_ctx);
+ LDB_DN_NULL_FAILED(new);
+
+ new->comp_num = dn1->comp_num;
+ new->components = talloc_array(new, struct ldb_dn_component, new->comp_num);
+ } else {
+ new = ldb_dn_copy_partial(mem_ctx, dn2, dn2->comp_num + dn1?dn1->comp_num:0);
+ }
+
+ if (dn1 == NULL) {
+ return new;
+ }
+
+ for (i = 0; i < dn1->comp_num; i++) {
+ new->components[i] = ldb_dn_copy_component(new->components,
+ &(dn1->components[i]));
+ }
+
+ return new;
+
+failed:
+ talloc_free(new);
+ return NULL;
+}
+
+struct ldb_dn *ldb_dn_compose_string_dn(void *mem_ctx, const char *dn1, const struct ldb_dn *dn2)
+{
+ if (dn1 == NULL) return NULL;
+
+ return ldb_dn_compose(mem_ctx, ldb_dn_explode(mem_ctx, dn1), dn2);
+}
+
+struct ldb_dn_component *ldb_dn_get_rdn(void *mem_ctx, const struct ldb_dn *dn)
+{
+ struct ldb_dn_component *rdn;
+
+ if (dn == NULL) return NULL;
+
+ if (dn->comp_num < 1) {
+ return NULL;
+ }
+
+ rdn = talloc(mem_ctx, struct ldb_dn_component);
+ if (rdn == NULL) return NULL;
+
+ *rdn = ldb_dn_copy_component(mem_ctx, &dn->components[0]);
+ if (rdn->name == NULL) {
+ talloc_free(rdn);
+ return NULL;
+ }
+
+ return rdn;
+}
+