[core] separate http_header_e from _htags bitmask

separate http_header_e index from r->{rqst,resp}_htags bitmask
(allows http_header_e remain 32-bit and to be used in array indexes
 while also allowing r->{rqst,resp}_htags to grow to 64-bits wide
 in the future, without requiring invasive changes)

src/buffer.h

@@ -217,10 +217,10 @@ static inline int light_isalnum(int c) {
 #define light_isupper(c) ((uint32_t)(c)-'A' <= 'Z'-'A')
 #define light_islower(c) ((uint32_t)(c)-'a' <= 'z'-'a')
 
-#define light_bshift(b)           (b)
-#define light_btst(a,b)  ((a) &   (b))
-#define light_bclr(a,b)  ((a) &= ~(b))
-#define light_bset(a,b)  ((a) |=  (b))
+#define light_bshift(b)           (1u << (b))
+#define light_btst(a,b)  ((a) &   (1u << (b)))
+#define light_bclr(a,b)  ((a) &= ~(1u << (b)))
+#define light_bset(a,b)  ((a) |=  (1u << (b)))
 
 
 __attribute_pure__

src/http_header.h

@@ -9,36 +9,36 @@
 /* Note: when adding new items, must replace OTHER in existing code for item */
 enum http_header_e {
   HTTP_HEADER_UNSPECIFIED       = -1
- ,HTTP_HEADER_OTHER             = 0x00000000
- ,HTTP_HEADER_ACCEPT_ENCODING   = 0x00000001
- ,HTTP_HEADER_AUTHORIZATION     = 0x00000002
- ,HTTP_HEADER_CACHE_CONTROL     = 0x00000004
- ,HTTP_HEADER_CONNECTION        = 0x00000008
- ,HTTP_HEADER_CONTENT_ENCODING  = 0x00000010
- ,HTTP_HEADER_CONTENT_LENGTH    = 0x00000020
- ,HTTP_HEADER_CONTENT_LOCATION  = 0x00000040
- ,HTTP_HEADER_CONTENT_TYPE      = 0x00000080
- ,HTTP_HEADER_COOKIE            = 0x00000100
- ,HTTP_HEADER_DATE              = 0x00000200
- ,HTTP_HEADER_ETAG              = 0x00000400
- ,HTTP_HEADER_EXPECT            = 0x00000800
- ,HTTP_HEADER_FORWARDED         = 0x00001000
- ,HTTP_HEADER_HOST              = 0x00002000
- ,HTTP_HEADER_IF_MODIFIED_SINCE = 0x00004000
- ,HTTP_HEADER_IF_NONE_MATCH     = 0x00008000
- ,HTTP_HEADER_LAST_MODIFIED     = 0x00010000
- ,HTTP_HEADER_LOCATION          = 0x00020000
- ,HTTP_HEADER_RANGE             = 0x00040000
- ,HTTP_HEADER_SERVER            = 0x00080000
- ,HTTP_HEADER_SET_COOKIE        = 0x00100000
- ,HTTP_HEADER_STATUS            = 0x00200000
- ,HTTP_HEADER_TRANSFER_ENCODING = 0x00400000
- ,HTTP_HEADER_UPGRADE           = 0x00800000
- ,HTTP_HEADER_USER_AGENT        = 0x01000000
- ,HTTP_HEADER_VARY              = 0x02000000
- ,HTTP_HEADER_X_FORWARDED_FOR   = 0x04000000
- ,HTTP_HEADER_X_FORWARDED_PROTO = 0x08000000
- ,HTTP_HEADER_HTTP2_SETTINGS    = 0x10000000
+ ,HTTP_HEADER_OTHER             =  0
+ ,HTTP_HEADER_ACCEPT_ENCODING
+ ,HTTP_HEADER_AUTHORIZATION
+ ,HTTP_HEADER_CACHE_CONTROL
+ ,HTTP_HEADER_CONNECTION
+ ,HTTP_HEADER_CONTENT_ENCODING
+ ,HTTP_HEADER_CONTENT_LENGTH
+ ,HTTP_HEADER_CONTENT_LOCATION
+ ,HTTP_HEADER_CONTENT_TYPE
+ ,HTTP_HEADER_COOKIE
+ ,HTTP_HEADER_DATE
+ ,HTTP_HEADER_ETAG
+ ,HTTP_HEADER_EXPECT
+ ,HTTP_HEADER_FORWARDED
+ ,HTTP_HEADER_HOST
+ ,HTTP_HEADER_IF_MODIFIED_SINCE
+ ,HTTP_HEADER_IF_NONE_MATCH
+ ,HTTP_HEADER_LAST_MODIFIED
+ ,HTTP_HEADER_LOCATION
+ ,HTTP_HEADER_RANGE
+ ,HTTP_HEADER_SERVER
+ ,HTTP_HEADER_SET_COOKIE
+ ,HTTP_HEADER_STATUS
+ ,HTTP_HEADER_TRANSFER_ENCODING
+ ,HTTP_HEADER_UPGRADE
+ ,HTTP_HEADER_USER_AGENT
+ ,HTTP_HEADER_VARY
+ ,HTTP_HEADER_X_FORWARDED_FOR
+ ,HTTP_HEADER_X_FORWARDED_PROTO
+ ,HTTP_HEADER_HTTP2_SETTINGS
 };
 
 __attribute_pure__