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Diffstat (limited to 'source4/libcli/ldap/ldap.c')
-rw-r--r--source4/libcli/ldap/ldap.c392
1 files changed, 17 insertions, 375 deletions
diff --git a/source4/libcli/ldap/ldap.c b/source4/libcli/ldap/ldap.c
index 0c6a466f27..f383d08074 100644
--- a/source4/libcli/ldap/ldap.c
+++ b/source4/libcli/ldap/ldap.c
@@ -28,350 +28,11 @@
#include "asn_1.h"
#include "libcli/ldap/ldap.h"
-/****************************************************************************
- *
- * LDAP filter parser -- main routine is ldap_parse_filter
- *
- * Shamelessly stolen and adapted from ldb.
- *
- ***************************************************************************/
-
-/*
- return next token element. Caller frees
-*/
-static char *ldap_parse_lex(TALLOC_CTX *mem_ctx, const char **s,
- const char *sep)
-{
- const char *p = *s;
- char *ret;
-
- while (isspace(*p)) {
- p++;
- }
- *s = p;
-
- if (*p == 0) {
- return NULL;
- }
-
- if (strchr(sep, *p)) {
- (*s) = p+1;
- ret = talloc_strndup(mem_ctx, p, 1);
- if (!ret) {
- errno = ENOMEM;
- }
- return ret;
- }
-
- while (*p && (isalnum(*p) || !strchr(sep, *p))) {
- p++;
- }
-
- if (p == *s) {
- return NULL;
- }
-
- ret = talloc_strndup(mem_ctx, *s, p - *s);
- if (!ret) {
- errno = ENOMEM;
- }
-
- *s = p;
-
- return ret;
-}
-
-
-/*
- find a matching close brace in a string
-*/
-static const char *match_brace(const char *s)
-{
- unsigned int count = 0;
- while (*s && (count != 0 || *s != ')')) {
- if (*s == '(') {
- count++;
- }
- if (*s == ')') {
- count--;
- }
- s++;
- }
- if (! *s) {
- return NULL;
- }
- return s;
-}
-
-static struct ldap_parse_tree *ldap_parse_filter(TALLOC_CTX *mem_ctx,
- const char **s);
-
-/*
- decode a RFC2254 binary string representation of a buffer.
- Used in LDAP filters.
-*/
-struct ldap_val ldap_binary_decode(TALLOC_CTX *mem_ctx, const char *str)
-{
- int i, j;
- struct ldap_val ret;
- int slen = strlen(str);
-
- ret.data = talloc_size(mem_ctx, slen);
- ret.length = 0;
- if (ret.data == NULL) return ret;
-
- for (i=j=0;i<slen;i++) {
- if (str[i] == '\\') {
- unsigned c;
- if (sscanf(&str[i+1], "%02X", &c) != 1) {
- talloc_free(ret.data);
- ZERO_STRUCT(ret);
- return ret;
- }
- ((uint8_t *)ret.data)[j++] = c;
- i += 2;
- } else {
- ((uint8_t *)ret.data)[j++] = str[i];
- }
- }
- ret.length = j;
-
- return ret;
-}
-
-
-/*
- encode a blob as a RFC2254 binary string, escaping any
- non-printable or '\' characters
-*/
-const char *ldap_binary_encode(TALLOC_CTX *mem_ctx, DATA_BLOB blob)
-{
- int i;
- char *ret;
- int len = blob.length;
- for (i=0;i<blob.length;i++) {
- if (!isprint(blob.data[i]) || strchr(" *()\\&|!", blob.data[i])) {
- len += 2;
- }
- }
- ret = talloc_array(mem_ctx, char, len+1);
- if (ret == NULL) return NULL;
-
- len = 0;
- for (i=0;i<blob.length;i++) {
- if (!isprint(blob.data[i]) || strchr(" *()\\&|!", blob.data[i])) {
- snprintf(ret+len, 4, "\\%02X", blob.data[i]);
- len += 3;
- } else {
- ret[len++] = blob.data[i];
- }
- }
- ret[len] = 0;
-
- return ret;
-}
-
-
-/*
- <simple> ::= <attributetype> <filtertype> <attributevalue>
-*/
-static struct ldap_parse_tree *ldap_parse_simple(TALLOC_CTX *mem_ctx,
- const char *s)
-{
- char *eq, *val, *l;
- struct ldap_parse_tree *ret;
-
- l = ldap_parse_lex(mem_ctx, &s, LDAP_ALL_SEP);
- if (!l) {
- return NULL;
- }
-
- if (strchr("()&|=", *l))
- return NULL;
-
- eq = ldap_parse_lex(mem_ctx, &s, LDAP_ALL_SEP);
- if (!eq || strcmp(eq, "=") != 0)
- return NULL;
-
- val = ldap_parse_lex(mem_ctx, &s, ")");
- if (val && strchr("()&|", *val))
- return NULL;
-
- ret = talloc(mem_ctx, struct ldap_parse_tree);
- if (!ret) {
- errno = ENOMEM;
- return NULL;
- }
-
- ret->operation = LDAP_OP_SIMPLE;
- ret->u.simple.attr = l;
- ret->u.simple.value = ldap_binary_decode(ret, val);
-
- return ret;
-}
-
-
-/*
- parse a filterlist
- <and> ::= '&' <filterlist>
- <or> ::= '|' <filterlist>
- <filterlist> ::= <filter> | <filter> <filterlist>
-*/
-static struct ldap_parse_tree *ldap_parse_filterlist(TALLOC_CTX *mem_ctx,
- enum ldap_parse_op op,
- const char *s)
-{
- struct ldap_parse_tree *ret, *next;
-
- ret = talloc(mem_ctx, struct ldap_parse_tree);
- if (!ret) {
- errno = ENOMEM;
- return NULL;
- }
-
- ret->operation = op;
- ret->u.list.num_elements = 1;
- ret->u.list.elements = talloc(mem_ctx, struct ldap_parse_tree *);
- if (!ret->u.list.elements) {
- errno = ENOMEM;
- return NULL;
- }
-
- ret->u.list.elements[0] = ldap_parse_filter(mem_ctx, &s);
- if (!ret->u.list.elements[0]) {
- return NULL;
- }
-
- while (isspace(*s)) s++;
-
- while (*s && (next = ldap_parse_filter(mem_ctx, &s))) {
- struct ldap_parse_tree **e;
- e = talloc_realloc(ret,
- ret->u.list.elements,
- struct ldap_parse_tree *,
- ret->u.list.num_elements+1);
- if (!e) {
- errno = ENOMEM;
- return NULL;
- }
- ret->u.list.elements = e;
- ret->u.list.elements[ret->u.list.num_elements] = next;
- ret->u.list.num_elements++;
- while (isspace(*s)) s++;
- }
-
- return ret;
-}
-
-
-/*
- <not> ::= '!' <filter>
-*/
-static struct ldap_parse_tree *ldap_parse_not(TALLOC_CTX *mem_ctx, const char *s)
-{
- struct ldap_parse_tree *ret;
-
- ret = talloc(mem_ctx, struct ldap_parse_tree);
- if (!ret) {
- errno = ENOMEM;
- return NULL;
- }
-
- ret->operation = LDAP_OP_NOT;
- ret->u.not.child = ldap_parse_filter(mem_ctx, &s);
- if (!ret->u.not.child)
- return NULL;
-
- return ret;
-}
-
-/*
- parse a filtercomp
- <filtercomp> ::= <and> | <or> | <not> | <simple>
-*/
-static struct ldap_parse_tree *ldap_parse_filtercomp(TALLOC_CTX *mem_ctx,
- const char *s)
-{
- while (isspace(*s)) s++;
-
- switch (*s) {
- case '&':
- return ldap_parse_filterlist(mem_ctx, LDAP_OP_AND, s+1);
-
- case '|':
- return ldap_parse_filterlist(mem_ctx, LDAP_OP_OR, s+1);
-
- case '!':
- return ldap_parse_not(mem_ctx, s+1);
-
- case '(':
- case ')':
- return NULL;
- }
-
- return ldap_parse_simple(mem_ctx, s);
-}
-
-
-/*
- <filter> ::= '(' <filtercomp> ')'
-*/
-static struct ldap_parse_tree *ldap_parse_filter(TALLOC_CTX *mem_ctx,
- const char **s)
-{
- char *l, *s2;
- const char *p, *p2;
- struct ldap_parse_tree *ret;
-
- l = ldap_parse_lex(mem_ctx, s, LDAP_ALL_SEP);
- if (!l) {
- return NULL;
- }
-
- if (strcmp(l, "(") != 0) {
- return NULL;
- }
-
- p = match_brace(*s);
- if (!p) {
- return NULL;
- }
- p2 = p + 1;
-
- s2 = talloc_strndup(mem_ctx, *s, p - *s);
- if (!s2) {
- errno = ENOMEM;
- return NULL;
- }
-
- ret = ldap_parse_filtercomp(mem_ctx, s2);
-
- *s = p2;
-
- return ret;
-}
-
-/*
- main parser entry point. Takes a search string and returns a parse tree
-
- expression ::= <simple> | <filter>
-*/
-static struct ldap_parse_tree *ldap_parse_tree(TALLOC_CTX *mem_ctx, const char *s)
-{
- while (isspace(*s)) s++;
-
- if (*s == '(') {
- return ldap_parse_filter(mem_ctx, &s);
- }
-
- return ldap_parse_simple(mem_ctx, s);
-}
-
-static BOOL ldap_push_filter(struct asn1_data *data, struct ldap_parse_tree *tree)
+static BOOL ldap_push_filter(struct asn1_data *data, struct ldb_parse_tree *tree)
{
switch (tree->operation) {
- case LDAP_OP_SIMPLE: {
+ case LDB_OP_SIMPLE: {
if ((tree->u.simple.value.length == 1) &&
(((char *)(tree->u.simple.value.data))[0] == '*')) {
/* Just a presence test */
@@ -392,7 +53,7 @@ static BOOL ldap_push_filter(struct asn1_data *data, struct ldap_parse_tree *tre
break;
}
- case LDAP_OP_AND: {
+ case LDB_OP_AND: {
int i;
asn1_push_tag(data, 0xa0);
@@ -403,7 +64,7 @@ static BOOL ldap_push_filter(struct asn1_data *data, struct ldap_parse_tree *tre
break;
}
- case LDAP_OP_OR: {
+ case LDB_OP_OR: {
int i;
asn1_push_tag(data, 0xa1);
@@ -481,9 +142,7 @@ BOOL ldap_encode(struct ldap_message *msg, DATA_BLOB *result)
struct ldap_BindResponse *r = &msg->r.BindResponse;
asn1_push_tag(&data, ASN1_APPLICATION(msg->type));
ldap_encode_response(&data, &r->response);
- if (r->SASL.secblob.length > 0) {
- asn1_write_ContextSimple(&data, 7, &r->SASL.secblob);
- }
+ asn1_write_ContextSimple(&data, 7, &r->SASL.secblob);
asn1_pop_tag(&data);
break;
}
@@ -493,6 +152,7 @@ BOOL ldap_encode(struct ldap_message *msg, DATA_BLOB *result)
}
case LDAP_TAG_SearchRequest: {
struct ldap_SearchRequest *r = &msg->r.SearchRequest;
+ struct ldb_parse_tree *tree;
asn1_push_tag(&data, ASN1_APPLICATION(msg->type));
asn1_write_OctetString(&data, r->basedn, strlen(r->basedn));
asn1_write_enumerated(&data, r->scope);
@@ -501,22 +161,14 @@ BOOL ldap_encode(struct ldap_message *msg, DATA_BLOB *result)
asn1_write_Integer(&data, r->timelimit);
asn1_write_BOOLEAN(&data, r->attributesonly);
- {
- TALLOC_CTX *mem_ctx = talloc_init("ldap_parse_tree");
- struct ldap_parse_tree *tree;
-
- if (mem_ctx == NULL)
- return False;
+ tree = ldb_parse_tree(NULL, r->filter);
- tree = ldap_parse_tree(mem_ctx, r->filter);
-
- if (tree == NULL)
- return False;
+ if (tree == NULL)
+ return False;
- ldap_push_filter(&data, tree);
+ ldap_push_filter(&data, tree);
- talloc_free(mem_ctx);
- }
+ talloc_free(tree);
asn1_push_tag(&data, ASN1_SEQUENCE(0));
for (i=0; i<r->num_attributes; i++) {
@@ -830,6 +482,8 @@ static BOOL ldap_decode_filter(TALLOC_CTX *mem_ctx, struct asn1_data *data,
/* equalityMatch */
const char *attrib;
DATA_BLOB value;
+ struct ldb_val val;
+
if (tag_desc != 0xa0) /* context compound */
return False;
asn1_start_tag(data, ASN1_CONTEXT(3));
@@ -838,8 +492,10 @@ static BOOL ldap_decode_filter(TALLOC_CTX *mem_ctx, struct asn1_data *data,
asn1_end_tag(data);
if ((data->has_error) || (attrib == NULL) || (value.data == NULL))
return False;
+ val.data = value.data;
+ val.length = value.length;
filter = talloc_asprintf(mem_ctx, "(%s=%s)",
- attrib, ldap_binary_encode(mem_ctx, value));
+ attrib, ldb_binary_encode(mem_ctx, val));
data_blob_free(&value);
break;
}
@@ -881,7 +537,7 @@ static void ldap_decode_attrib(TALLOC_CTX *mem_ctx, struct asn1_data *data,
asn1_start_tag(data, ASN1_SET);
while (asn1_peek_tag(data, ASN1_OCTET_STRING)) {
DATA_BLOB blob;
- struct ldap_val value;
+ struct ldb_val value;
asn1_read_OctetString(data, &blob);
value.data = blob.data;
value.length = blob.length;
@@ -1334,17 +990,3 @@ BOOL ldap_parse_basic_url(TALLOC_CTX *mem_ctx, const char *url,
return (*host != NULL);
}
-
-
-/*
- externally callable version of filter string parsing - used in the
- cldap server
-*/
-struct ldap_parse_tree *ldap_parse_filter_string(TALLOC_CTX *mem_ctx,
- const char *s)
-{
- return ldap_parse_filter(mem_ctx, &s);
-}
-
-
-
generated by cgit (git 2.34.1) at 2024-11-15 17:19:32 +0000