From d1fb78c1fd8bc565d7f153810015dbd627d46514 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Mon, 27 Apr 2015 21:19:50 +0200
Subject: [PATCH] basic support for RFC5988 (Web Linking)

---
 php_http_params.c | 35 +++++++++++++++++++++++++++++++++--
 php_http_params.h |  1 +
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/php_http_params.c b/php_http_params.c
index ce785ec..34bc928 100644
--- a/php_http_params.c
+++ b/php_http_params.c
@@ -541,6 +541,10 @@ static void push_param(HashTable *params, php_http_params_state_t *state, const
 
 			MAKE_STD_ZVAL(key);
 			ZVAL_NULL(key);
+			if (opts->flags & PHP_HTTP_PARAMS_RFC5988) {
+				state->param.str += 1; /* < */
+				state->param.len -= 2; /* > */
+			}
 			sanitize_key(opts->flags, state->param.str, state->param.len, key, &rfc5987 TSRMLS_CC);
 			state->rfc5987 = rfc5987;
 			if (Z_TYPE_P(key) != IS_STRING) {
@@ -623,7 +627,13 @@ HashTable *php_http_params_parse(HashTable *params, const php_http_params_opts_t
 	}
 
 	while (state.input.len) {
-		if (*state.input.str == '"' && !state.escape) {
+		if ((opts->flags & PHP_HTTP_PARAMS_RFC5988) && !state.arg.str) {
+			if (!state.param.str && *state.input.str == '<') {
+				state.quotes = 1;
+			} else if (*state.input.str == '>') {
+				state.quotes = 0;
+			}
+		} else if (*state.input.str == '"' && !state.escape) {
 			state.quotes = !state.quotes;
 		} else {
 			state.escape = (*state.input.str == '\\');
@@ -730,6 +740,22 @@ static inline void shift_rfc5987(php_http_buffer_t *buf, zval *zvalue, const cha
 	}
 }
 
+static inline void shift_rfc5988(php_http_buffer_t *buf, char *key_str, size_t key_len, const char *ass, size_t asl, unsigned flags TSRMLS_DC)
+{
+	char *str;
+	size_t len;
+
+	if (buf->used) {
+		php_http_buffer_append(buf, ass, asl);
+	}
+
+	prepare_key(flags, key_str, key_len, &str, &len TSRMLS_CC);
+	php_http_buffer_appends(buf, "<");
+	php_http_buffer_append(buf, str, len);
+	php_http_buffer_appends(buf, ">");
+	efree(str);
+}
+
 static inline void shift_val(php_http_buffer_t *buf, zval *zvalue, const char *vss, size_t vsl, unsigned flags TSRMLS_DC)
 {
 	if (Z_TYPE_P(zvalue) != IS_BOOL) {
@@ -789,7 +815,11 @@ static void shift_param(php_http_buffer_t *buf, char *key_str, size_t key_len, z
 			shift_arg(buf, key_str, key_len, zvalue, ass, asl, vss, vsl, flags TSRMLS_CC);
 		}
 	} else {
-		shift_key(buf, key_str, key_len, pss, psl, flags TSRMLS_CC);
+		if (flags & PHP_HTTP_PARAMS_RFC5988) {
+			shift_rfc5988(buf, key_str, key_len, pss, psl, flags TSRMLS_CC);
+		} else {
+			shift_key(buf, key_str, key_len, pss, psl, flags TSRMLS_CC);
+		}
 		shift_val(buf, zvalue, vss, vsl, flags TSRMLS_CC);
 	}
 }
@@ -1180,6 +1210,7 @@ PHP_MINIT_FUNCTION(http_params)
 	zend_declare_class_constant_long(php_http_params_class_entry, ZEND_STRL("PARSE_URLENCODED"), PHP_HTTP_PARAMS_URLENCODED TSRMLS_CC);
 	zend_declare_class_constant_long(php_http_params_class_entry, ZEND_STRL("PARSE_DIMENSION"), PHP_HTTP_PARAMS_DIMENSION TSRMLS_CC);
 	zend_declare_class_constant_long(php_http_params_class_entry, ZEND_STRL("PARSE_RFC5987"), PHP_HTTP_PARAMS_RFC5987 TSRMLS_CC);
+	zend_declare_class_constant_long(php_http_params_class_entry, ZEND_STRL("PARSE_RFC5988"), PHP_HTTP_PARAMS_RFC5988 TSRMLS_CC);
 	zend_declare_class_constant_long(php_http_params_class_entry, ZEND_STRL("PARSE_DEFAULT"), PHP_HTTP_PARAMS_DEFAULT TSRMLS_CC);
 	zend_declare_class_constant_long(php_http_params_class_entry, ZEND_STRL("PARSE_QUERY"), PHP_HTTP_PARAMS_QUERY TSRMLS_CC);
 
diff --git a/php_http_params.h b/php_http_params.h
index 42f56f9..e1ebe27 100644
--- a/php_http_params.h
+++ b/php_http_params.h
@@ -23,6 +23,7 @@ typedef struct php_http_params_token {
 #define PHP_HTTP_PARAMS_URLENCODED	0x04
 #define PHP_HTTP_PARAMS_DIMENSION	0x08
 #define PHP_HTTP_PARAMS_RFC5987		0x10
+#define PHP_HTTP_PARAMS_RFC5988		0x20
 #define PHP_HTTP_PARAMS_QUERY		(PHP_HTTP_PARAMS_URLENCODED|PHP_HTTP_PARAMS_DIMENSION)
 #define PHP_HTTP_PARAMS_DEFAULT		(PHP_HTTP_PARAMS_ESCAPED|PHP_HTTP_PARAMS_RFC5987)
 
-- 
2.30.2