X-Git-Url: http://git.samba.org/?a=blobdiff_plain;f=source4%2Flib%2Fldb%2Fcommon%2Fldb_msg.c;h=ae5bc2e3abe808720f6d16c13134686869ab8419;hb=7ce36261a7b17b8485924021971b44ef4314edca;hp=055569b0ee3355ab56e3c92fc40b0ef02045023d;hpb=579c13da43d5b40ac6d6c1436399fbc1d8dfd054;p=kamenim%2Fsamba.git
diff --git a/source4/lib/ldb/common/ldb_msg.c b/source4/lib/ldb/common/ldb_msg.c
index 055569b0ee..ae5bc2e3ab 100644
--- a/source4/lib/ldb/common/ldb_msg.c
+++ b/source4/lib/ldb/common/ldb_msg.c
@@ -10,7 +10,7 @@
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -18,8 +18,7 @@
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ License along with this library; if not, see .
*/
/*
@@ -32,8 +31,15 @@
* Author: Andrew Tridgell
*/
-#include "includes.h"
+#include "ldb_private.h"
+/*
+ create a new ldb_message in a given memory context (NULL for top level)
+*/
+struct ldb_message *ldb_msg_new(void *mem_ctx)
+{
+ return talloc_zero(mem_ctx, struct ldb_message);
+}
/*
find an element in a message by attribute name
@@ -41,7 +47,7 @@
struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
const char *attr_name)
{
- int i;
+ unsigned int i;
for (i=0;inum_elements;i++) {
if (ldb_attr_cmp(msg->elements[i].name, attr_name) == 0) {
return &msg->elements[i];
@@ -57,7 +63,7 @@ struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2)
{
if (v1->length != v2->length) return 0;
-
+ if (v1->data == v2->data) return 1;
if (v1->length == 0) return 1;
if (memcmp(v1->data, v2->data, v1->length) == 0) {
@@ -74,7 +80,7 @@ int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2)
struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
struct ldb_val *val)
{
- int i;
+ unsigned int i;
for (i=0;inum_values;i++) {
if (ldb_val_equal_exact(val, &el->values[i])) {
return &el->values[i];
@@ -83,109 +89,257 @@ struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
return NULL;
}
-
/*
- add an empty element to a message
+ duplicate a ldb_val structure
*/
-int ldb_msg_add_empty(struct ldb_context *ldb,
- struct ldb_message *msg, const char *attr_name, int flags)
+struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v)
+{
+ struct ldb_val v2;
+ v2.length = v->length;
+ if (v->data == NULL) {
+ v2.data = NULL;
+ return v2;
+ }
+
+ /* the +1 is to cope with buggy C library routines like strndup
+ that look one byte beyond */
+ v2.data = talloc_array(mem_ctx, uint8_t, v->length+1);
+ if (!v2.data) {
+ v2.length = 0;
+ return v2;
+ }
+
+ memcpy(v2.data, v->data, v->length);
+ ((char *)v2.data)[v->length] = 0;
+ return v2;
+}
+
+/**
+ * Adds new empty element to msg->elements
+ */
+static int _ldb_msg_add_el(struct ldb_message *msg,
+ struct ldb_message_element **return_el)
{
struct ldb_message_element *els;
- els = ldb_realloc_p(ldb, msg->elements,
- struct ldb_message_element, msg->num_elements+1);
+ /* TODO: Find out a way to assert
+ * on input parameters.
+ * msg and return_el must be valid */
+
+ els = talloc_realloc(msg, msg->elements,
+ struct ldb_message_element, msg->num_elements + 1);
if (!els) {
errno = ENOMEM;
- return -1;
+ return LDB_ERR_OPERATIONS_ERROR;
}
- els[msg->num_elements].values = NULL;
- els[msg->num_elements].num_values = 0;
- els[msg->num_elements].flags = flags;
- els[msg->num_elements].name = ldb_strdup(ldb, attr_name);
- if (!els[msg->num_elements].name) {
- return -1;
- }
+ ZERO_STRUCT(els[msg->num_elements]);
msg->elements = els;
msg->num_elements++;
- return 0;
+ *return_el = &els[msg->num_elements-1];
+
+ return LDB_SUCCESS;
}
-/*
- add an empty element to a message
-*/
-int ldb_msg_add(struct ldb_context *ldb,
- struct ldb_message *msg,
+/**
+ * Add an empty element with a given name to a message
+ */
+int ldb_msg_add_empty(struct ldb_message *msg,
+ const char *attr_name,
+ int flags,
+ struct ldb_message_element **return_el)
+{
+ int ret;
+ struct ldb_message_element *el;
+
+ ret = _ldb_msg_add_el(msg, &el);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ /* initialize newly added element */
+ el->flags = flags;
+ el->name = talloc_strdup(msg->elements, attr_name);
+ if (!el->name) {
+ errno = ENOMEM;
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (return_el) {
+ *return_el = el;
+ }
+
+ return LDB_SUCCESS;
+}
+
+/**
+ * Adds an element to a message.
+ *
+ * NOTE: Ownership of ldb_message_element fields
+ * is NOT transferred. Thus, if el pointer
+ * is invalidated for some reason, this will
+ * corrupt msg contents also
+ */
+int ldb_msg_add(struct ldb_message *msg,
const struct ldb_message_element *el,
int flags)
{
- if (ldb_msg_add_empty(ldb, msg, el->name, flags) != 0) {
- return -1;
+ int ret;
+ struct ldb_message_element *el_new;
+ /* We have to copy this, just in case *el is a pointer into
+ * what ldb_msg_add_empty() is about to realloc() */
+ struct ldb_message_element el_copy = *el;
+
+ ret = _ldb_msg_add_el(msg, &el_new);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- msg->elements[msg->num_elements-1] = *el;
- msg->elements[msg->num_elements-1].flags = flags;
+ el_new->flags = flags;
+ el_new->name = el_copy.name;
+ el_new->num_values = el_copy.num_values;
+ el_new->values = el_copy.values;
- return 0;
+ return LDB_SUCCESS;
}
/*
add a value to a message
*/
-int ldb_msg_add_value(struct ldb_context *ldb,
- struct ldb_message *msg,
+int ldb_msg_add_value(struct ldb_message *msg,
const char *attr_name,
- struct ldb_val *val)
+ const struct ldb_val *val,
+ struct ldb_message_element **return_el)
{
struct ldb_message_element *el;
struct ldb_val *vals;
+ int ret;
el = ldb_msg_find_element(msg, attr_name);
if (!el) {
- ldb_msg_add_empty(ldb, msg, attr_name, 0);
- el = ldb_msg_find_element(msg, attr_name);
- }
- if (!el) {
- return -1;
+ ret = ldb_msg_add_empty(msg, attr_name, 0, &el);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
}
- vals = ldb_realloc_p(ldb, el->values, struct ldb_val, el->num_values+1);
+ vals = talloc_realloc(msg, el->values, struct ldb_val, el->num_values+1);
if (!vals) {
errno = ENOMEM;
- return -1;
+ return LDB_ERR_OPERATIONS_ERROR;
}
el->values = vals;
el->values[el->num_values] = *val;
el->num_values++;
- return 0;
+ if (return_el) {
+ *return_el = el;
+ }
+
+ return LDB_SUCCESS;
+}
+
+
+/*
+ add a value to a message, stealing it into the 'right' place
+*/
+int ldb_msg_add_steal_value(struct ldb_message *msg,
+ const char *attr_name,
+ struct ldb_val *val)
+{
+ int ret;
+ struct ldb_message_element *el;
+
+ ret = ldb_msg_add_value(msg, attr_name, val, &el);
+ if (ret == LDB_SUCCESS) {
+ talloc_steal(el->values, val->data);
+ }
+ return ret;
}
/*
add a string element to a message
*/
-int ldb_msg_add_string(struct ldb_context *ldb, struct ldb_message *msg,
- char *attr_name, char *str)
+int ldb_msg_add_string(struct ldb_message *msg,
+ const char *attr_name, const char *str)
{
struct ldb_val val;
- val.data = str;
+ val.data = discard_const_p(uint8_t, str);
val.length = strlen(str);
- return ldb_msg_add_value(ldb, msg, attr_name, &val);
+ if (val.length == 0) {
+ /* allow empty strings as non-existent attributes */
+ return LDB_SUCCESS;
+ }
+
+ return ldb_msg_add_value(msg, attr_name, &val, NULL);
+}
+
+/*
+ add a string element to a message, stealing it into the 'right' place
+*/
+int ldb_msg_add_steal_string(struct ldb_message *msg,
+ const char *attr_name, char *str)
+{
+ struct ldb_val val;
+
+ val.data = (uint8_t *)str;
+ val.length = strlen(str);
+
+ if (val.length == 0) {
+ /* allow empty strings as non-existent attributes */
+ return LDB_SUCCESS;
+ }
+
+ return ldb_msg_add_steal_value(msg, attr_name, &val);
+}
+
+/*
+ add a DN element to a message
+ WARNING: this uses the linearized string from the dn, and does not
+ copy the string.
+*/
+int ldb_msg_add_linearized_dn(struct ldb_message *msg, const char *attr_name,
+ struct ldb_dn *dn)
+{
+ return ldb_msg_add_steal_string(msg, attr_name,
+ ldb_dn_alloc_linearized(msg, dn));
+}
+
+/*
+ add a printf formatted element to a message
+*/
+int ldb_msg_add_fmt(struct ldb_message *msg,
+ const char *attr_name, const char *fmt, ...)
+{
+ struct ldb_val val;
+ va_list ap;
+ char *str;
+
+ va_start(ap, fmt);
+ str = talloc_vasprintf(msg, fmt, ap);
+ va_end(ap);
+
+ if (str == NULL) return LDB_ERR_OPERATIONS_ERROR;
+
+ val.data = (uint8_t *)str;
+ val.length = strlen(str);
+
+ return ldb_msg_add_steal_value(msg, attr_name, &val);
}
/*
compare two ldb_message_element structures
- assumes case senistive comparison
+ assumes case sensitive comparison
*/
int ldb_msg_element_compare(struct ldb_message_element *el1,
struct ldb_message_element *el2)
{
- int i;
+ unsigned int i;
if (el1->num_values != el2->num_values) {
return el1->num_values - el2->num_values;
@@ -200,11 +354,22 @@ int ldb_msg_element_compare(struct ldb_message_element *el1,
return 0;
}
+/*
+ compare two ldb_message_element structures
+ comparing by element name
+*/
+int ldb_msg_element_compare_name(struct ldb_message_element *el1,
+ struct ldb_message_element *el2)
+{
+ return ldb_attr_cmp(el1->name, el2->name);
+}
+
/*
convenience functions to return common types from a message
these return the first value if the attribute is multi-valued
*/
-const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name)
+const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg,
+ const char *attr_name)
{
struct ldb_message_element *el = ldb_msg_find_element(msg, attr_name);
if (!el || el->num_values == 0) {
@@ -213,68 +378,741 @@ const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const
return &el->values[0];
}
-int ldb_msg_find_int(const struct ldb_message *msg,
- const char *attr_name,
- int default_value)
+int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
+ const char *attr_name,
+ int default_value)
{
const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
if (!v || !v->data) {
return default_value;
}
- return strtol(v->data, NULL, 0);
+ return strtol((const char *)v->data, NULL, 0);
}
-unsigned int ldb_msg_find_uint(const struct ldb_message *msg,
- const char *attr_name,
- int default_value)
+unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
+ const char *attr_name,
+ unsigned int default_value)
{
+ unsigned int ret;
const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
if (!v || !v->data) {
return default_value;
}
- return strtoul(v->data, NULL, 0);
+
+ /* in LDAP there're only int32_t values */
+ errno = 0;
+ ret = strtol((const char *)v->data, NULL, 0);
+ if (errno == 0) {
+ return ret;
+ }
+
+ return strtoul((const char *)v->data, NULL, 0);
}
-int64_t ldb_msg_find_int64(const struct ldb_message *msg,
- const char *attr_name,
- int64_t default_value)
+int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
+ const char *attr_name,
+ int64_t default_value)
{
const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
if (!v || !v->data) {
return default_value;
}
- return strtoll(v->data, NULL, 0);
+ return strtoll((const char *)v->data, NULL, 0);
}
-uint64_t ldb_msg_find_uint64(const struct ldb_message *msg,
- const char *attr_name,
- uint64_t default_value)
+uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
+ const char *attr_name,
+ uint64_t default_value)
{
+ uint64_t ret;
const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
if (!v || !v->data) {
return default_value;
}
- return strtoull(v->data, NULL, 0);
+
+ /* in LDAP there're only int64_t values */
+ errno = 0;
+ ret = strtoll((const char *)v->data, NULL, 0);
+ if (errno == 0) {
+ return ret;
+ }
+
+ return strtoull((const char *)v->data, NULL, 0);
}
-double ldb_msg_find_double(const struct ldb_message *msg,
- const char *attr_name,
- double default_value)
+double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
+ const char *attr_name,
+ double default_value)
{
const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
if (!v || !v->data) {
return default_value;
}
- return strtod(v->data, NULL);
+ return strtod((const char *)v->data, NULL);
}
-const char *ldb_msg_find_string(const struct ldb_message *msg,
- const char *attr_name,
- const char *default_value)
+int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
+ const char *attr_name,
+ int default_value)
{
const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
if (!v || !v->data) {
return default_value;
}
- return v->data;
+ if (v->length == 5 && strncasecmp((const char *)v->data, "FALSE", 5) == 0) {
+ return 0;
+ }
+ if (v->length == 4 && strncasecmp((const char *)v->data, "TRUE", 4) == 0) {
+ return 1;
+ }
+ return default_value;
+}
+
+const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
+ const char *attr_name,
+ const char *default_value)
+{
+ const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
+ if (!v || !v->data) {
+ return default_value;
+ }
+ return (const char *)v->data;
+}
+
+struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
+ void *mem_ctx,
+ const struct ldb_message *msg,
+ const char *attr_name)
+{
+ struct ldb_dn *res_dn;
+ const struct ldb_val *v;
+
+ v = ldb_msg_find_ldb_val(msg, attr_name);
+ if (!v || !v->data) {
+ return NULL;
+ }
+ res_dn = ldb_dn_from_ldb_val(mem_ctx, ldb, v);
+ if ( ! ldb_dn_validate(res_dn)) {
+ talloc_free(res_dn);
+ return NULL;
+ }
+ return res_dn;
+}
+
+/*
+ sort the elements of a message by name
+*/
+void ldb_msg_sort_elements(struct ldb_message *msg)
+{
+ TYPESAFE_QSORT(msg->elements, msg->num_elements,
+ ldb_msg_element_compare_name);
+}
+
+/*
+ shallow copy a message - copying only the elements array so that the caller
+ can safely add new elements without changing the message
+*/
+struct ldb_message *ldb_msg_copy_shallow(TALLOC_CTX *mem_ctx,
+ const struct ldb_message *msg)
+{
+ struct ldb_message *msg2;
+ unsigned int i;
+
+ msg2 = talloc(mem_ctx, struct ldb_message);
+ if (msg2 == NULL) return NULL;
+
+ *msg2 = *msg;
+
+ msg2->elements = talloc_array(msg2, struct ldb_message_element,
+ msg2->num_elements);
+ if (msg2->elements == NULL) goto failed;
+
+ for (i=0;inum_elements;i++) {
+ msg2->elements[i] = msg->elements[i];
+ }
+
+ return msg2;
+
+failed:
+ talloc_free(msg2);
+ return NULL;
+}
+
+
+/*
+ copy a message, allocating new memory for all parts
+*/
+struct ldb_message *ldb_msg_copy(TALLOC_CTX *mem_ctx,
+ const struct ldb_message *msg)
+{
+ struct ldb_message *msg2;
+ unsigned int i, j;
+
+ msg2 = ldb_msg_copy_shallow(mem_ctx, msg);
+ if (msg2 == NULL) return NULL;
+
+ msg2->dn = ldb_dn_copy(msg2, msg2->dn);
+ if (msg2->dn == NULL) goto failed;
+
+ for (i=0;inum_elements;i++) {
+ struct ldb_message_element *el = &msg2->elements[i];
+ struct ldb_val *values = el->values;
+ el->name = talloc_strdup(msg2->elements, el->name);
+ if (el->name == NULL) goto failed;
+ el->values = talloc_array(msg2->elements, struct ldb_val, el->num_values);
+ for (j=0;jnum_values;j++) {
+ el->values[j] = ldb_val_dup(el->values, &values[j]);
+ if (el->values[j].data == NULL && values[j].length != 0) {
+ goto failed;
+ }
+ }
+ }
+
+ return msg2;
+
+failed:
+ talloc_free(msg2);
+ return NULL;
}
+
+
+/*
+ canonicalise a message, merging elements of the same name
+*/
+struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
+ const struct ldb_message *msg)
+{
+ unsigned int i;
+ struct ldb_message *msg2;
+
+ msg2 = ldb_msg_copy(ldb, msg);
+ if (msg2 == NULL) return NULL;
+
+ ldb_msg_sort_elements(msg2);
+
+ for (i=1;inum_elements;i++) {
+ struct ldb_message_element *el1 = &msg2->elements[i-1];
+ struct ldb_message_element *el2 = &msg2->elements[i];
+ if (ldb_msg_element_compare_name(el1, el2) == 0) {
+ el1->values = talloc_realloc(msg2->elements, el1->values, struct ldb_val,
+ el1->num_values + el2->num_values);
+ if (el1->num_values + el2->num_values > 0 && el1->values == NULL) {
+ return NULL;
+ }
+ memcpy(el1->values + el1->num_values,
+ el2->values,
+ sizeof(struct ldb_val) * el2->num_values);
+ el1->num_values += el2->num_values;
+ talloc_free(discard_const_p(char, el2->name));
+ if (i+1num_elements) {
+ memmove(el2, el2+1, sizeof(struct ldb_message_element) *
+ (msg2->num_elements - (i+1)));
+ }
+ msg2->num_elements--;
+ i--;
+ }
+ }
+
+ return msg2;
+}
+
+/**
+ * Canonicalize a message, merging elements of the same name
+ */
+int ldb_msg_canonicalize_ex(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ TALLOC_CTX *mem_ctx,
+ struct ldb_message **_msg_out)
+{
+ unsigned int i;
+ struct ldb_message *msg2;
+
+ msg2 = ldb_msg_copy(mem_ctx, msg);
+ if (msg2 == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ldb_msg_sort_elements(msg2);
+
+ for (i=1; i < msg2->num_elements; i++) {
+ struct ldb_message_element *el1 = &msg2->elements[i-1];
+ struct ldb_message_element *el2 = &msg2->elements[i];
+
+ if (ldb_msg_element_compare_name(el1, el2) == 0) {
+ el1->values = talloc_realloc(msg2->elements,
+ el1->values, struct ldb_val,
+ el1->num_values + el2->num_values);
+ if (el1->num_values + el2->num_values > 0 && el1->values == NULL) {
+ talloc_free(msg2);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ memcpy(el1->values + el1->num_values,
+ el2->values,
+ sizeof(struct ldb_val) * el2->num_values);
+ el1->num_values += el2->num_values;
+ talloc_free(discard_const_p(char, el2->name));
+ if ((i+1) < msg2->num_elements) {
+ memmove(el2, el2+1, sizeof(struct ldb_message_element) *
+ (msg2->num_elements - (i+1)));
+ }
+ msg2->num_elements--;
+ i--;
+ }
+ }
+
+ *_msg_out = msg2;
+ return LDB_SUCCESS;
+}
+
+
+/*
+ return a ldb_message representing the differences between msg1 and msg2. If you
+ then use this in a ldb_modify() call it can be used to save edits to a message
+*/
+struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
+ struct ldb_message *msg1,
+ struct ldb_message *msg2)
+{
+ int ldb_ret;
+ struct ldb_message *mod;
+
+ /* allocate mod message in NULL context
+ * so it should appear as 'leaked' in talloc reports */
+ ldb_ret = ldb_msg_diff_ex(ldb, msg1, msg2,
+ (TALLOC_CTX*)NULL, &mod);
+ if (ldb_ret != LDB_SUCCESS) {
+ return NULL;
+ }
+
+ return mod;
+}
+
+/**
+ * return a ldb_message representing the differences between msg1 and msg2.
+ * If you then use this in a ldb_modify() call it can be used to save edits to a message
+ *
+ * Result message is constructed as follows:
+ * - LDB_FLAG_MOD_ADD - elements found only in msg2
+ * - LDB_FLAG_MOD_REPLACE - elements in msg2 that have different value in msg1
+ * Value for msg2 element is used
+ * - LDB_FLAG_MOD_DELETE - elements found only in msg2
+ *
+ * @return LDB_SUCCESS or LDB_ERR_OPERATIONS_ERROR
+ */
+int ldb_msg_diff_ex(struct ldb_context *ldb,
+ struct ldb_message *msg1,
+ struct ldb_message *msg2,
+ TALLOC_CTX *mem_ctx,
+ struct ldb_message **_msg_out)
+{
+ int ldb_res;
+ unsigned int i;
+ struct ldb_message *mod;
+ struct ldb_message_element *el;
+ TALLOC_CTX *temp_ctx;
+
+ temp_ctx = talloc_new(mem_ctx);
+ if (!temp_ctx) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ mod = ldb_msg_new(temp_ctx);
+ if (mod == NULL) {
+ goto failed;
+ }
+
+ mod->dn = msg1->dn;
+ mod->num_elements = 0;
+ mod->elements = NULL;
+
+ /* canonicalize msg2 so we have no
+ * repeated elements */
+ msg2 = ldb_msg_canonicalize(ldb, msg2);
+ if (msg2 == NULL) {
+ goto failed;
+ }
+
+ /* steal msg2 into mod context as it is
+ * allocated in ldb's context */
+ talloc_steal(mod, msg2);
+
+ /* look in msg2 to find elements that need to be added
+ or modified */
+ for (i=0;inum_elements;i++) {
+ el = ldb_msg_find_element(msg1, msg2->elements[i].name);
+
+ if (el && ldb_msg_element_compare(el, &msg2->elements[i]) == 0) {
+ continue;
+ }
+
+ ldb_res = ldb_msg_add(mod,
+ &msg2->elements[i],
+ el ? LDB_FLAG_MOD_REPLACE : LDB_FLAG_MOD_ADD);
+ if (ldb_res != LDB_SUCCESS) {
+ goto failed;
+ }
+ }
+
+ /* look in msg1 to find elements that need to be deleted */
+ for (i=0;inum_elements;i++) {
+ el = ldb_msg_find_element(msg2, msg1->elements[i].name);
+ if (el == NULL) {
+ ldb_res = ldb_msg_add_empty(mod,
+ msg1->elements[i].name,
+ LDB_FLAG_MOD_DELETE, NULL);
+ if (ldb_res != LDB_SUCCESS) {
+ goto failed;
+ }
+ }
+ }
+
+ /* steal resulting message into supplied context */
+ talloc_steal(mem_ctx, mod);
+ *_msg_out = mod;
+
+ talloc_free(temp_ctx);
+ return LDB_SUCCESS;
+
+failed:
+ talloc_free(temp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+}
+
+
+int ldb_msg_sanity_check(struct ldb_context *ldb,
+ const struct ldb_message *msg)
+{
+ unsigned int i, j;
+
+ /* basic check on DN */
+ if (msg->dn == NULL) {
+ /* TODO: return also an error string */
+ ldb_set_errstring(ldb, "ldb message lacks a DN!");
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+
+ /* basic syntax checks */
+ for (i = 0; i < msg->num_elements; i++) {
+ for (j = 0; j < msg->elements[i].num_values; j++) {
+ if (msg->elements[i].values[j].length == 0) {
+ TALLOC_CTX *mem_ctx = talloc_new(ldb);
+ /* an attribute cannot be empty */
+ /* TODO: return also an error string */
+ ldb_asprintf_errstring(ldb, "Element %s has empty attribute in ldb message (%s)!",
+ msg->elements[i].name,
+ ldb_dn_get_linearized(msg->dn));
+ talloc_free(mem_ctx);
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+
+
+
+/*
+ copy an attribute list. This only copies the array, not the elements
+ (ie. the elements are left as the same pointers)
+*/
+const char **ldb_attr_list_copy(TALLOC_CTX *mem_ctx, const char * const *attrs)
+{
+ const char **ret;
+ unsigned int i;
+
+ for (i=0;attrs && attrs[i];i++) /* noop */ ;
+ ret = talloc_array(mem_ctx, const char *, i+1);
+ if (ret == NULL) {
+ return NULL;
+ }
+ for (i=0;attrs && attrs[i];i++) {
+ ret[i] = attrs[i];
+ }
+ ret[i] = attrs[i];
+ return ret;
+}
+
+
+/*
+ copy an attribute list. This only copies the array, not the elements
+ (ie. the elements are left as the same pointers). The new attribute is added to the list.
+*/
+const char **ldb_attr_list_copy_add(TALLOC_CTX *mem_ctx, const char * const *attrs, const char *new_attr)
+{
+ const char **ret;
+ unsigned int i;
+ bool found = false;
+
+ for (i=0;attrs && attrs[i];i++) {
+ if (ldb_attr_cmp(attrs[i], new_attr) == 0) {
+ found = true;
+ }
+ }
+ if (found) {
+ return ldb_attr_list_copy(mem_ctx, attrs);
+ }
+ ret = talloc_array(mem_ctx, const char *, i+2);
+ if (ret == NULL) {
+ return NULL;
+ }
+ for (i=0;attrs && attrs[i];i++) {
+ ret[i] = attrs[i];
+ }
+ ret[i] = new_attr;
+ ret[i+1] = NULL;
+ return ret;
+}
+
+
+/*
+ return 1 if an attribute is in a list of attributes, or 0 otherwise
+*/
+int ldb_attr_in_list(const char * const *attrs, const char *attr)
+{
+ unsigned int i;
+ for (i=0;attrs && attrs[i];i++) {
+ if (ldb_attr_cmp(attrs[i], attr) == 0) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+
+/*
+ rename the specified attribute in a search result
+*/
+int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace)
+{
+ struct ldb_message_element *el = ldb_msg_find_element(msg, attr);
+ if (el == NULL) {
+ return LDB_SUCCESS;
+ }
+ el->name = talloc_strdup(msg->elements, replace);
+ if (el->name == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ return LDB_SUCCESS;
+}
+
+
+/*
+ copy the specified attribute in a search result to a new attribute
+*/
+int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace)
+{
+ struct ldb_message_element *el = ldb_msg_find_element(msg, attr);
+ if (el == NULL) {
+ return LDB_SUCCESS;
+ }
+ if (ldb_msg_add(msg, el, 0) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ return ldb_msg_rename_attr(msg, attr, replace);
+}
+
+/*
+ remove the specified element in a search result
+*/
+void ldb_msg_remove_element(struct ldb_message *msg, struct ldb_message_element *el)
+{
+ ptrdiff_t n = (el - msg->elements);
+ if (n >= msg->num_elements) {
+ /* should we abort() here? */
+ return;
+ }
+ if (n != msg->num_elements-1) {
+ memmove(el, el+1, ((msg->num_elements-1) - n)*sizeof(*el));
+ }
+ msg->num_elements--;
+}
+
+
+/*
+ remove the specified attribute in a search result
+*/
+void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr)
+{
+ struct ldb_message_element *el;
+
+ while ((el = ldb_msg_find_element(msg, attr)) != NULL) {
+ ldb_msg_remove_element(msg, el);
+ }
+}
+
+/*
+ return a LDAP formatted GeneralizedTime string
+*/
+char *ldb_timestring(TALLOC_CTX *mem_ctx, time_t t)
+{
+ struct tm *tm = gmtime(&t);
+ char *ts;
+ int r;
+
+ if (!tm) {
+ return NULL;
+ }
+
+ /* we now excatly how long this string will be */
+ ts = talloc_array(mem_ctx, char, 18);
+
+ /* formatted like: 20040408072012.0Z */
+ r = snprintf(ts, 18,
+ "%04u%02u%02u%02u%02u%02u.0Z",
+ tm->tm_year+1900, tm->tm_mon+1,
+ tm->tm_mday, tm->tm_hour, tm->tm_min,
+ tm->tm_sec);
+
+ if (r != 17) {
+ talloc_free(ts);
+ return NULL;
+ }
+
+ return ts;
+}
+
+/*
+ convert a LDAP GeneralizedTime string to a time_t. Return 0 if unable to convert
+*/
+time_t ldb_string_to_time(const char *s)
+{
+ struct tm tm;
+
+ if (s == NULL) return 0;
+
+ memset(&tm, 0, sizeof(tm));
+ if (sscanf(s, "%04u%02u%02u%02u%02u%02u.0Z",
+ &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
+ &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
+ return 0;
+ }
+ tm.tm_year -= 1900;
+ tm.tm_mon -= 1;
+
+ return timegm(&tm);
+}
+
+/*
+ convert a LDAP GeneralizedTime string in ldb_val format to a
+ time_t.
+*/
+int ldb_val_to_time(const struct ldb_val *v, time_t *t)
+{
+ struct tm tm;
+
+ if (v == NULL || !v->data || v->length < 17) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+
+ memset(&tm, 0, sizeof(tm));
+
+ if (sscanf((char *)v->data, "%04u%02u%02u%02u%02u%02u.0Z",
+ &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
+ &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+ tm.tm_year -= 1900;
+ tm.tm_mon -= 1;
+
+ *t = timegm(&tm);
+
+ return LDB_SUCCESS;
+}
+
+/*
+ return a LDAP formatted UTCTime string
+*/
+char *ldb_timestring_utc(TALLOC_CTX *mem_ctx, time_t t)
+{
+ struct tm *tm = gmtime(&t);
+ char *ts;
+ int r;
+
+ if (!tm) {
+ return NULL;
+ }
+
+ /* we now excatly how long this string will be */
+ ts = talloc_array(mem_ctx, char, 14);
+
+ /* formatted like: 20040408072012.0Z => 040408072012Z */
+ r = snprintf(ts, 14,
+ "%02u%02u%02u%02u%02u%02uZ",
+ (tm->tm_year+1900)%100, tm->tm_mon+1,
+ tm->tm_mday, tm->tm_hour, tm->tm_min,
+ tm->tm_sec);
+
+ if (r != 13) {
+ talloc_free(ts);
+ return NULL;
+ }
+
+ return ts;
+}
+
+/*
+ convert a LDAP UTCTime string to a time_t. Return 0 if unable to convert
+*/
+time_t ldb_string_utc_to_time(const char *s)
+{
+ struct tm tm;
+
+ if (s == NULL) return 0;
+
+ memset(&tm, 0, sizeof(tm));
+ if (sscanf(s, "%02u%02u%02u%02u%02u%02uZ",
+ &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
+ &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
+ return 0;
+ }
+ if (tm.tm_year < 50) {
+ tm.tm_year += 100;
+ }
+ tm.tm_mon -= 1;
+
+ return timegm(&tm);
+}
+
+
+/*
+ dump a set of results to a file. Useful from within gdb
+*/
+void ldb_dump_results(struct ldb_context *ldb, struct ldb_result *result, FILE *f)
+{
+ unsigned int i;
+
+ for (i = 0; i < result->count; i++) {
+ struct ldb_ldif ldif;
+ fprintf(f, "# record %d\n", i+1);
+ ldif.changetype = LDB_CHANGETYPE_NONE;
+ ldif.msg = result->msgs[i];
+ ldb_ldif_write_file(ldb, f, &ldif);
+ }
+}
+
+/*
+ checks for a string attribute. Returns "1" on match and otherwise "0".
+*/
+int ldb_msg_check_string_attribute(const struct ldb_message *msg,
+ const char *name, const char *value)
+{
+ struct ldb_message_element *el;
+ struct ldb_val val;
+
+ el = ldb_msg_find_element(msg, name);
+ if (el == NULL) {
+ return 0;
+ }
+
+ val.data = discard_const_p(uint8_t, value);
+ val.length = strlen(value);
+
+ if (ldb_msg_find_val(el, &val)) {
+ return 1;
+ }
+
+ return 0;
+}
+