1 files changed, 226 insertions, 0 deletions
diff --git a/data/lighttpd/lighttpd-1.4.53/src/buffer.h b/data/lighttpd/lighttpd-1.4.53/src/buffer.h
new file mode 100644
index 000000000..df461e1a8
--- /dev/null
+++ b/data/lighttpd/lighttpd-1.4.53/src/buffer.h
@@ -0,0 +1,226 @@
+#ifndef _BUFFER_H_
+#define _BUFFER_H_
+#include "first.h"
+
+struct tm;              /* declaration */
+
+/* generic string + binary data container; contains a terminating 0 in both
+ * cases
+ *
+ * used == 0 indicates a special "empty" state (unset config values); ptr
+ * might be NULL too then. otherwise an empty string has used == 1 (and ptr[0]
+ * == 0);
+ *
+ * copy/append functions will ensure used >= 1 (i.e. never leave it in the
+ * special empty state); only buffer_copy_buffer will copy the special empty
+ * state.
+ */
+typedef struct {
+	char *ptr;
+
+	/* "used" includes a terminating 0 */
+	size_t used;
+	/* size of allocated buffer at *ptr */
+	size_t size;
+} buffer;
+
+/* create new buffer; either empty or copy given data */
+buffer* buffer_init(void);
+buffer* buffer_init_buffer(const buffer *src); /* src can  be NULL */
+buffer* buffer_init_string(const char *str); /* str can  be NULL */
+
+void buffer_free(buffer *b); /* b can be NULL */
+/* truncates to used == 0; frees large buffers, might keep smaller ones for reuse */
+void buffer_reset(buffer *b); /* b can be NULL */
+
+/* reset b. if NULL != b && NULL != src, move src content to b. reset src. */
+void buffer_move(buffer *b, buffer *src);
+
+/* make sure buffer is large enough to store a string of given size
+ * and a terminating zero.
+ * sets b to an empty string, and may drop old content.
+ * @return b->ptr
+ */
+char* buffer_string_prepare_copy(buffer *b, size_t size);
+
+/* allocate buffer large enough to be able to append a string of given size
+ * if b was empty (used == 0) it will contain an empty string (used == 1)
+ * afterwards
+ * "used" data is preserved; if not empty buffer must contain a
+ * zero terminated string.
+ */
+char* buffer_string_prepare_append(buffer *b, size_t size);
+
+/* use after prepare_(copy,append) when you have written data to the buffer
+ * to increase the buffer length by size. also sets the terminating zero.
+ * requires enough space is present for the terminating zero (prepare with the
+ * same size to be sure).
+ */
+void buffer_commit(buffer *b, size_t size);
+
+/* sets string length:
+ * - always stores a terminating zero to terminate the "new" string
+ * - does not modify the string data apart from terminating zero
+ * - reallocates the buffer iff needed
+ */
+void buffer_string_set_length(buffer *b, size_t len);
+
+/* clear buffer
+ * - invalidate buffer contents
+ * - unsets used chars but does not modify existing ptr contents
+ *   (b->ptr *is not* set to an empty, '\0'-terminated string "")
+ */
+static inline void buffer_clear(buffer *b);
+
+void buffer_copy_string(buffer *b, const char *s);
+void buffer_copy_string_len(buffer *b, const char *s, size_t s_len);
+static inline void buffer_copy_buffer(buffer *b, const buffer *src);
+
+void buffer_append_string(buffer *b, const char *s);
+void buffer_append_string_len(buffer *b, const char *s, size_t s_len);
+static inline void buffer_append_string_buffer(buffer *b, const buffer *src);
+
+#define buffer_append_uint_hex(b,len) buffer_append_uint_hex_lc((b),(len))
+void buffer_append_uint_hex_lc(buffer *b, uintmax_t len);
+void buffer_append_int(buffer *b, intmax_t val);
+void buffer_copy_int(buffer *b, intmax_t val);
+
+void buffer_append_strftime(buffer *b, const char *format, const struct tm *tm);
+
+/* '-', log_10 (2^bits) = bits * log 2 / log 10 < bits * 0.31, terminating 0 */
+#define LI_ITOSTRING_LENGTH (2 + (8 * sizeof(intmax_t) * 31 + 99) / 100)
+
+void li_itostrn(char *buf, size_t buf_len, intmax_t val);
+void li_utostrn(char *buf, size_t buf_len, uintmax_t val);
+
+/* buf must be (at least) 2*s_len + 1 big. uses lower-case hex letters. */
+#define li_tohex(buf,buf_len,s,s_len) li_tohex_lc((buf),(buf_len),(s),(s_len))
+void li_tohex_lc(char *buf, size_t buf_len, const char *s, size_t s_len);
+void li_tohex_uc(char *buf, size_t buf_len, const char *s, size_t s_len);
+
+/* NULL buffer or empty buffer (used == 0);
+ * unset "string" (buffer) config options are initialized to used == 0,
+ * while setting an empty string leads to used == 1
+ */
+static inline int buffer_is_empty(const buffer *b);
+/* NULL buffer, empty buffer (used == 0) or empty string (used == 1) */
+static inline int buffer_string_is_empty(const buffer *b);
+
+int buffer_is_equal(const buffer *a, const buffer *b);
+int buffer_is_equal_right_len(const buffer *a, const buffer *b, size_t len);
+int buffer_is_equal_string(const buffer *a, const char *s, size_t b_len);
+int buffer_is_equal_caseless_string(const buffer *a, const char *s, size_t b_len);
+int buffer_caseless_compare(const char *a, size_t a_len, const char *b, size_t b_len);
+
+void buffer_substr_replace (buffer *b, size_t offset, size_t len, const buffer *replace);
+
+void buffer_append_string_encoded_hex_lc(buffer *b, const char *s, size_t len);
+void buffer_append_string_encoded_hex_uc(buffer *b, const char *s, size_t len);
+
+typedef enum {
+	ENCODING_REL_URI, /* for coding a rel-uri (/with space/and%percent) nicely as part of a href */
+	ENCODING_REL_URI_PART, /* same as ENC_REL_URL plus coding / too as %2F */
+	ENCODING_HTML,         /* & becomes &amp; and so on */
+	ENCODING_MINIMAL_XML   /* minimal encoding for xml */
+} buffer_encoding_t;
+
+void buffer_append_string_encoded(buffer *b, const char *s, size_t s_len, buffer_encoding_t encoding);
+
+/* escape non-printable characters; simple escapes for \t, \r, \n; fallback to \xCC */
+void buffer_append_string_c_escaped(buffer *b, const char *s, size_t s_len);
+
+/* to upper case, replace non alpha-numerics with '_'; if is_http_header prefix with "HTTP_" unless s is "content-type" */
+void buffer_copy_string_encoded_cgi_varnames(buffer *b, const char *s, size_t s_len, int is_http_header);
+
+void buffer_urldecode_path(buffer *url);
+void buffer_urldecode_query(buffer *url);
+int buffer_is_valid_UTF8(const buffer *b);
+void buffer_path_simplify(buffer *dest, buffer *src);
+
+void buffer_to_lower(buffer *b);
+void buffer_to_upper(buffer *b);
+
+
+/** deprecated */
+char hex2int(unsigned char c);
+char int2hex(char i);
+
+static inline int light_isdigit(int c);
+static inline int light_isxdigit(int c);
+static inline int light_isalpha(int c);
+static inline int light_isalnum(int c);
+
+static inline int light_isdigit(int c) {
+	return (c >= '0' && c <= '9');
+}
+
+static inline int light_isxdigit(int c) {
+	return light_isdigit(c) || (c |= 32, c >= 'a' && c <= 'f');
+}
+
+static inline int light_isalpha(int c) {
+	return (c |= 32, c >= 'a' && c <= 'z');
+}
+
+static inline int light_isalnum(int c) {
+	return light_isdigit(c) || light_isalpha(c);
+}
+
+
+static inline size_t buffer_string_length(const buffer *b); /* buffer string length without terminating 0 */
+static inline size_t buffer_string_space(const buffer *b); /* maximum length of string that can be stored without reallocating */
+static inline void buffer_append_slash(buffer *b); /* append '/' no non-empty strings not ending in '/' */
+void buffer_append_path_len(buffer *b, const char *a, size_t alen); /* join strings with '/', if '/' not present */
+
+#define BUFFER_APPEND_STRING_CONST(x, y) \
+	buffer_append_string_len(x, y, sizeof(y) - 1)
+
+#define BUFFER_COPY_STRING_CONST(x, y) \
+	buffer_copy_string_len(x, y, sizeof(y) - 1)
+
+#define CONST_STR_LEN(x) x, (x) ? sizeof(x) - 1 : 0
+#define CONST_BUF_LEN(x) ((x) ? (x)->ptr : NULL), buffer_string_length(x)
+
+
+#define LI_NORETURN __attribute_noreturn__
+
+__attribute_cold__
+void log_failed_assert(const char *filename, unsigned int line, const char *msg) LI_NORETURN;
+#define force_assert(x) do { if (!(x)) log_failed_assert(__FILE__, __LINE__, "assertion failed: " #x); } while(0)
+#define SEGFAULT() log_failed_assert(__FILE__, __LINE__, "aborted");
+
+/* inline implementations */
+
+static inline int buffer_is_empty(const buffer *b) {
+	return NULL == b || 0 == b->used;
+}
+static inline int buffer_string_is_empty(const buffer *b) {
+	return NULL == b || b->used < 2;
+}
+
+static inline size_t buffer_string_length(const buffer *b) {
+	return NULL != b && 0 != b->used ? b->used - 1 : 0;
+}
+
+static inline size_t buffer_string_space(const buffer *b) {
+	return NULL != b && b->size ? b->size - (b->used | (0 == b->used)) : 0;
+}
+
+static inline void buffer_copy_buffer(buffer *b, const buffer *src) {
+	buffer_copy_string_len(b, CONST_BUF_LEN(src));
+}
+
+static inline void buffer_append_string_buffer(buffer *b, const buffer *src) {
+	buffer_append_string_len(b, CONST_BUF_LEN(src));
+}
+
+static inline void buffer_append_slash(buffer *b) {
+	size_t len = buffer_string_length(b);
+	if (len > 0 && '/' != b->ptr[len-1]) BUFFER_APPEND_STRING_CONST(b, "/");
+}
+
+static inline void buffer_clear(buffer *b) {
+	b->used = 0;
+}
+
+#endif