X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/46b0747592074017ff0ea4b33d4a7194235886e5..1cb912e4f90473f78d2f0f10ab5c9b2c5bd36440:/libs/smux/xer_decoder.c?ds=sidebyside

diff --git a/libs/smux/xer_decoder.c b/libs/smux/xer_decoder.c
index 161dc78c..5b87703a 100644
--- a/libs/smux/xer_decoder.c
+++ b/libs/smux/xer_decoder.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004, 2005 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Copyright (c) 2004-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
  * Redistribution and modifications are permitted subject to BSD license.
  */
 #include <asn_application.h>
@@ -11,9 +11,10 @@
  * Decode the XER encoding of a given type.
  */
 asn_dec_rval_t
-xer_decode(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
-		void **struct_ptr, const void *buffer, size_t size) {
-	asn_codec_ctx_t s_codec_ctx;
+xer_decode(const asn_codec_ctx_t *opt_codec_ctx,
+           const asn_TYPE_descriptor_t *td, void **struct_ptr,
+           const void *buffer, size_t size) {
+    asn_codec_ctx_t s_codec_ctx;
 
 	/*
 	 * Stack checker requires that the codec context
@@ -27,14 +28,14 @@ xer_decode(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
 	} else {
 		/* If context is not given, be security-conscious anyway */
 		memset(&s_codec_ctx, 0, sizeof(s_codec_ctx));
-		s_codec_ctx.max_stack_size = _ASN_DEFAULT_STACK_MAX;
+		s_codec_ctx.max_stack_size = ASN__DEFAULT_STACK_MAX;
 		opt_codec_ctx = &s_codec_ctx;
 	}
 
 	/*
 	 * Invoke type-specific decoder.
 	 */
-	return td->xer_decoder(opt_codec_ctx, td, struct_ptr, 0, buffer, size);
+	return td->op->xer_decoder(opt_codec_ctx, td, struct_ptr, 0, buffer, size);
 }
 
 
@@ -70,6 +71,7 @@ xer_next_token(int *stateContext, const void *buffer, size_t size, pxer_chunk_ty
 	if(ret < 0) return -1;
 	if(arg.callback_not_invoked) {
 		assert(ret == 0);	/* No data was consumed */
+        *ch_type = PXER_WMORE;
 		return 0;		/* Try again with more data */
 	} else {
 		assert(arg.chunk_size);
@@ -83,7 +85,9 @@ xer_next_token(int *stateContext, const void *buffer, size_t size, pxer_chunk_ty
 	case PXML_TEXT:
 		*ch_type = PXER_TEXT;
 		break;
-	case PXML_TAG: return 0;	/* Want more */
+	case PXML_TAG:
+		*ch_type = PXER_WMORE;
+		return 0;	/* Want more */
 	case PXML_TAG_END:
 		*ch_type = PXER_TAG;
 		break;
@@ -109,7 +113,8 @@ xer_check_tag(const void *buf_ptr, int size, const char *need_tag) {
 
 	if(size < 2 || buf[0] != LANGLE || buf[size-1] != RANGLE) {
 		if(size >= 2)
-		ASN_DEBUG("Broken XML tag: \"%c...%c\"", buf[0], buf[size - 1]);
+			ASN_DEBUG("Broken XML tag: \"%c...%c\"",
+			buf[0], buf[size - 1]);
 		return XCT_BROKEN;
 	}
 
@@ -197,7 +202,7 @@ xer_check_tag(const void *buf_ptr, int size, const char *need_tag) {
  * Generalized function for decoding the primitive values.
  */
 asn_dec_rval_t
-xer_decode_general(asn_codec_ctx_t *opt_codec_ctx,
+xer_decode_general(const asn_codec_ctx_t *opt_codec_ctx,
 	asn_struct_ctx_t *ctx,	/* Type decoder context */
 	void *struct_key,
 	const char *xml_tag,	/* Expected XML tag */
@@ -230,12 +235,12 @@ xer_decode_general(asn_codec_ctx_t *opt_codec_ctx,
 		 */
 		ch_size = xer_next_token(&ctx->context, buf_ptr, size,
 			&ch_type);
-		switch(ch_size) {
-		case -1: RETURN(RC_FAIL);
-		case 0:
-			RETURN(RC_WMORE);
-		default:
+		if(ch_size == -1) {
+            RETURN(RC_FAIL);
+        } else {
 			switch(ch_type) {
+			case PXER_WMORE:
+                RETURN(RC_WMORE);
 			case PXER_COMMENT:		/* Got XML comment */
 				ADVANCE(ch_size);	/* Skip silently */
 				continue;
@@ -315,8 +320,8 @@ xer_decode_general(asn_codec_ctx_t *opt_codec_ctx,
 }
 
 
-int
-xer_is_whitespace(const void *chunk_buf, size_t chunk_size) {
+size_t
+xer_whitespace_span(const void *chunk_buf, size_t chunk_size) {
 	const char *p = (const char *)chunk_buf;
 	const char *pend = p + chunk_size;
 
@@ -329,12 +334,13 @@ xer_is_whitespace(const void *chunk_buf, size_t chunk_size) {
 		 * SPACE (32)
 		 */
 		case 0x09: case 0x0a: case 0x0d: case 0x20:
-			break;
+			continue;
 		default:
-			return 0;
+			break;
 		}
+		break;
 	}
-	return 1;       /* All whitespace */
+	return (p - (const char *)chunk_buf);
 }
 
 /*