librpc/rpc: add dcerpc_binding_get_string_option()

This allows get value string of a [key=value] option
of the dcerpc_binding.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>

2 files changed, 34 insertions, 0 deletions

diff --git a/librpc/rpc/binding.c b/librpc/rpc/binding.c
index de319be4b46..277900c7355 100644
--- a/librpc/rpc/binding.c
+++ b/librpc/rpc/binding.c
@@ -425,6 +425,38 @@ _PUBLIC_ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struc
 	return NT_STATUS_OK;
 }
 
+_PUBLIC_ const char *dcerpc_binding_get_string_option(const struct dcerpc_binding *b,
+						      const char *name)
+{
+	size_t i;
+
+	if (b->options == NULL) {
+		return NULL;
+	}
+
+	for (i=0; b->options[i]; i++) {
+		const char *o = b->options[i];
+		const char *vs = NULL;
+		size_t name_len = strlen(name);
+		int ret;
+
+		ret = strncmp(name, o, name_len);
+		if (ret != 0) {
+			continue;
+		}
+
+		if (o[name_len] != '=') {
+			continue;
+		}
+
+		vs = &o[name_len + 1];
+
+		return vs;
+	}
+
+	return NULL;
+}
+
 _PUBLIC_ NTSTATUS dcerpc_floor_get_lhs_data(const struct epm_floor *epm_floor,
 					    struct ndr_syntax_id *syntax)
 {
diff --git a/librpc/rpc/rpc_common.h b/librpc/rpc/rpc_common.h
index 6d23cebc2c0..89312ce620f 100644
--- a/librpc/rpc/rpc_common.h
+++ b/librpc/rpc/rpc_common.h
@@ -136,6 +136,8 @@ NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
 				   struct dcerpc_binding **b_out);
 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out);
 char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b);
+const char *dcerpc_binding_get_string_option(const struct dcerpc_binding *b,
+					     const char *name);
 NTSTATUS dcerpc_floor_get_lhs_data(const struct epm_floor *epm_floor, struct ndr_syntax_id *syntax);
 const char *derpc_transport_string_by_transport(enum dcerpc_transport_t t);
 enum dcerpc_transport_t dcerpc_transport_by_name(const char *name);