improve negotiation precision

[m6w6/ext-http] / src / php_http_negotiate.c

diff --git a/src/php_http_negotiate.c b/src/php_http_negotiate.c
index 3907501e420a13878e3a6777f0dbba88bf6ff381..02b0a646a8c099d7c016c2b9a5ecf03bbacaae91 100644 (file)
--- a/src/php_http_negotiate.c
+++ b/src/php_http_negotiate.c
@@ -12,6 +12,10 @@
 
 #include "php_http_api.h"
 
+#ifndef PHP_HTTP_DEBUG_NEG
+# define PHP_HTTP_DEBUG_NEG 0
+#endif
+
 static int php_http_negotiate_sort(const void *a, const void *b TSRMLS_DC)
 {
        zval result, *first, *second;
@@ -27,9 +31,9 @@ static int php_http_negotiate_sort(const void *a, const void *b TSRMLS_DC)
 
 #define M_PRI 5
 #define M_SEC 2
-#define M_ANY 1
+#define M_ANY -1
 #define M_NOT 0
-#define M_ALL -1
+#define M_ALL ~0
 static inline unsigned php_http_negotiate_match(const char *param_str, size_t param_len, const char *supported_str, size_t supported_len, const char *sep_str, size_t sep_len)
 {
        int match = M_NOT;
@@ -51,7 +55,11 @@ static inline unsigned php_http_negotiate_match(const char *param_str, size_t pa
                        match += M_PRI;
                }
 
-               if (param_sec && supported_sec && !strcasecmp(param_sec, supported_sec)) {
+               if (param_sec && supported_sec
+               && ((*(param_sec + sep_len) == '*' || *(supported_sec + sep_len) == '*')
+                       || !strcasecmp(param_sec, supported_sec)
+                       )
+               ) {
                        match += M_SEC;
                }
 
@@ -62,7 +70,7 @@ static inline unsigned php_http_negotiate_match(const char *param_str, size_t pa
                        match += M_ANY;
                }
        }
-#if 0
+#if PHP_HTTP_DEBUG_NEG
        fprintf(stderr, "match: %s == %s => %u\n", supported_str, param_str, match);
 #endif
        return match;
@@ -71,9 +79,10 @@ static inline unsigned php_http_negotiate_match(const char *param_str, size_t pa
 static int php_http_negotiate_reduce(void *p TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key)
 {
        unsigned best_match = 0;
+       double q = 0;
        HashPosition pos;
        php_http_array_hashkey_t key = php_http_array_hashkey_init(0);
-       zval **q = NULL, **val, *supported = php_http_ztyp(IS_STRING, *(zval **)p);
+       zval **val, *supported = php_http_ztyp(IS_STRING, *(zval **)p);
        HashTable *params = va_arg(args, HashTable *);
        HashTable *result = va_arg(args, HashTable *);
        const char *sep_str = va_arg(args, const char *);
@@ -82,17 +91,22 @@ static int php_http_negotiate_reduce(void *p TSRMLS_DC, int num_args, va_list ar
        FOREACH_HASH_KEYVAL(pos, params, key, val) {
                if (key.type == HASH_KEY_IS_STRING) {
                        unsigned match = php_http_negotiate_match(key.str, key.len-1, Z_STRVAL_P(supported), Z_STRLEN_P(supported), sep_str, sep_len);
-
+#if PHP_HTTP_DEBUG_NEG
+                       fprintf(stderr, "match(%u) > best_match(%u) = %u (q=%f)\n", match, best_match, match>best_match, Z_DVAL_PP(val));
+#endif
                        if (match > best_match) {
                                best_match = match;
-                               q = val;
+                               q = Z_DVAL_PP(val) - 0.1 / match;
                        }
                }
        }
 
-       if (q && Z_DVAL_PP(q) > 0) {
-               Z_ADDREF_PP(q);
-               zend_hash_update(result, Z_STRVAL_P(supported), Z_STRLEN_P(supported) + 1, (void *) q, sizeof(zval *), NULL);
+       if (q > 0) {
+               zval *tmp;
+
+               MAKE_STD_ZVAL(tmp);
+               ZVAL_DOUBLE(tmp, q);
+               zend_hash_update(result, Z_STRVAL_P(supported), Z_STRLEN_P(supported) + 1, (void *) &tmp, sizeof(zval *), NULL);
        }
 
        zval_ptr_dtor(&supported);
@@ -133,7 +147,7 @@ HashTable *php_http_negotiate(const char *value_str, size_t value_len, HashTable
                                q = Z_DVAL_P(tmp);
                                zval_ptr_dtor(&tmp);
                        } else {
-                               q = 1.0 - ++i / 100.0;
+                               q = 1.0 - (((double) ++i) / 100.0);
                        }
 
                        if (key.type == HASH_KEY_IS_STRING) {
@@ -145,7 +159,7 @@ HashTable *php_http_negotiate(const char *value_str, size_t value_len, HashTable
                        PTR_FREE(key.str);
                }
 
-#if 0
+#if PHP_HTTP_DEBUG_NEG
                zend_print_zval_r(&arr, 1 TSRMLS_CC);
 #endif