diff options
Diffstat (limited to 'libcli')
| -rw-r--r-- | libcli/ldap/ldap_message.c | 148 | ||||
| -rw-r--r-- | libcli/ldap/ldap_message.h | 14 |
2 files changed, 156 insertions, 6 deletions
diff --git a/libcli/ldap/ldap_message.c b/libcli/ldap/ldap_message.c index 06052a936a..9b00d0188d 100644 --- a/libcli/ldap/ldap_message.c +++ b/libcli/ldap/ldap_message.c @@ -84,6 +84,138 @@ static bool add_mod_to_array_talloc(TALLOC_CTX *mem_ctx, return true; } +static bool ldap_decode_control_value(void *mem_ctx, DATA_BLOB value, + const struct ldap_control_handler *handlers, + struct ldb_control *ctrl) +{ + int i; + + if (!handlers) { + return true; + } + + for (i = 0; handlers[i].oid != NULL; i++) { + if (strcmp(handlers[i].oid, ctrl->oid) == 0) { + if (!handlers[i].decode || !handlers[i].decode(mem_ctx, value, &ctrl->data)) { + return false; + } + break; + } + } + if (handlers[i].oid == NULL) { + return false; + } + + return true; +} + +static bool ldap_decode_control_wrapper(void *mem_ctx, struct asn1_data *data, + struct ldb_control *ctrl, DATA_BLOB *value) +{ + DATA_BLOB oid; + + if (!asn1_start_tag(data, ASN1_SEQUENCE(0))) { + return false; + } + + if (!asn1_read_OctetString(data, mem_ctx, &oid)) { + return false; + } + ctrl->oid = talloc_strndup(mem_ctx, (char *)oid.data, oid.length); + if (!ctrl->oid) { + return false; + } + + if (asn1_peek_tag(data, ASN1_BOOLEAN)) { + bool critical; + if (!asn1_read_BOOLEAN(data, &critical)) { + return false; + } + ctrl->critical = critical; + } else { + ctrl->critical = false; + } + + ctrl->data = NULL; + + if (!asn1_peek_tag(data, ASN1_OCTET_STRING)) { + *value = data_blob(NULL, 0); + goto end_tag; + } + + if (!asn1_read_OctetString(data, mem_ctx, value)) { + return false; + } + +end_tag: + if (!asn1_end_tag(data)) { + return false; + } + + return true; +} + +static bool ldap_encode_control(void *mem_ctx, struct asn1_data *data, + const struct ldap_control_handler *handlers, + struct ldb_control *ctrl) +{ + DATA_BLOB value; + int i; + + if (!handlers) { + return false; + } + + for (i = 0; handlers[i].oid != NULL; i++) { + if (strcmp(handlers[i].oid, ctrl->oid) == 0) { + if (!handlers[i].encode) { + if (ctrl->critical) { + return false; + } else { + /* not encoding this control */ + return true; + } + } + if (!handlers[i].encode(mem_ctx, ctrl->data, &value)) { + return false; + } + break; + } + } + if (handlers[i].oid == NULL) { + return false; + } + + if (!asn1_push_tag(data, ASN1_SEQUENCE(0))) { + return false; + } + + if (!asn1_write_OctetString(data, ctrl->oid, strlen(ctrl->oid))) { + return false; + } + + if (ctrl->critical) { + if (!asn1_write_BOOLEAN(data, ctrl->critical)) { + return false; + } + } + + if (!ctrl->data) { + goto pop_tag; + } + + if (!asn1_write_OctetString(data, value.data, value.length)) { + return false; + } + +pop_tag: + if (!asn1_pop_tag(data)) { + return false; + } + + return true; +} + static bool ldap_push_filter(struct asn1_data *data, struct ldb_parse_tree *tree) { int i; @@ -244,7 +376,9 @@ static void ldap_encode_response(struct asn1_data *data, struct ldap_Result *res } } -_PUBLIC_ bool ldap_encode(struct ldap_message *msg, DATA_BLOB *result, TALLOC_CTX *mem_ctx) +_PUBLIC_ bool ldap_encode(struct ldap_message *msg, + const struct ldap_control_handler *control_handlers, + DATA_BLOB *result, TALLOC_CTX *mem_ctx) { struct asn1_data *data = asn1_init(mem_ctx); int i, j; @@ -531,7 +665,9 @@ _PUBLIC_ bool ldap_encode(struct ldap_message *msg, DATA_BLOB *result, TALLOC_CT asn1_push_tag(data, ASN1_CONTEXT(0)); for (i = 0; msg->controls[i] != NULL; i++) { - if (!ldap_encode_control(mem_ctx, data, msg->controls[i])) { + if (!ldap_encode_control(mem_ctx, data, + control_handlers, + msg->controls[i])) { return false; } } @@ -993,7 +1129,9 @@ static void ldap_decode_attribs(TALLOC_CTX *mem_ctx, struct asn1_data *data, /* This routine returns LDAP status codes */ -_PUBLIC_ NTSTATUS ldap_decode(struct asn1_data *data, struct ldap_message *msg) +_PUBLIC_ NTSTATUS ldap_decode(struct asn1_data *data, + const struct ldap_control_handler *control_handlers, + struct ldap_message *msg) { uint8_t tag; @@ -1428,7 +1566,9 @@ _PUBLIC_ NTSTATUS ldap_decode(struct asn1_data *data, struct ldap_message *msg) return NT_STATUS_LDAP(LDAP_PROTOCOL_ERROR); } - if (!ldap_decode_control_value(ctrl, value, ctrl[i])) { + if (!ldap_decode_control_value(ctrl, value, + control_handlers, + ctrl[i])) { if (ctrl[i]->critical) { ctrl[i]->data = NULL; decoded[i] = false; diff --git a/libcli/ldap/ldap_message.h b/libcli/ldap/ldap_message.h index d2ce14445d..c50018465c 100644 --- a/libcli/ldap/ldap_message.h +++ b/libcli/ldap/ldap_message.h @@ -207,11 +207,21 @@ struct ldap_message { bool *controls_decoded; }; +struct ldap_control_handler { + const char *oid; + bool (*decode)(void *mem_ctx, DATA_BLOB in, void *_out); + bool (*encode)(void *mem_ctx, void *in, DATA_BLOB *out); +}; + struct asn1_data; struct ldap_message *new_ldap_message(TALLOC_CTX *mem_ctx); -NTSTATUS ldap_decode(struct asn1_data *data, struct ldap_message *msg); -bool ldap_encode(struct ldap_message *msg, DATA_BLOB *result, TALLOC_CTX *mem_ctx); +NTSTATUS ldap_decode(struct asn1_data *data, + const struct ldap_control_handler *control_handlers, + struct ldap_message *msg); +bool ldap_encode(struct ldap_message *msg, + const struct ldap_control_handler *control_handlers, + DATA_BLOB *result, TALLOC_CTX *mem_ctx); NTSTATUS ldap_full_packet(void *private_data, DATA_BLOB blob, size_t *packet_size); bool asn1_read_OctetString_talloc(TALLOC_CTX *mem_ctx, |