#ifndef _PARSE_H
#define _PARSE_H
-// Various routines that deal with parsing; both configuration files and HTTP requests.
+// Various routines that deal with parsing; both HTTP requests and more generic text.
-#include <map>
-#include <vector>
+#include <stddef.h>
+#include <string>
+#include <algorithm>
#include <string>
+#include <unordered_map>
+#include <vector>
-struct ConfigLine {
- std::string keyword;
- std::vector<std::string> arguments;
- std::map<std::string, std::string> parameters;
+// Locale-unaware tolower(); matches RFC 2616 no matter what the locale is set to.
+static inline char ascii_tolower(const char ch)
+{
+ if (ch >= 'A' && ch <= 'Z') {
+ return ch + 'a' - 'A';
+ } else {
+ return ch;
+ }
+}
+
+// Case-insensitive header comparison and hashing.
+struct HTTPEqual {
+ bool operator() (const std::string &a, const std::string &b) const
+ {
+ return a.size() == b.size() &&
+ std::equal(
+ begin(a), end(a), begin(b),
+ [](char a, char b) {
+ return ascii_tolower(a) == ascii_tolower(b);
+ });
+ }
+};
+struct HTTPHash {
+ size_t operator() (const std::string &s) const
+ {
+ std::string s_low = s;
+ for (char &ch : s_low) { ch = ascii_tolower(ch); }
+ return std::hash<std::string>() (s_low);
+ }
};
+using HTTPHeaderMultimap = std::unordered_multimap<std::string, std::string, HTTPHash, HTTPEqual>;
// Split a line on whitespace, e.g. "foo bar baz" -> {"foo", "bar", "baz"}.
std::vector<std::string> split_tokens(const std::string &line);
// Split a string on \n or \r\n, e.g. "foo\nbar\r\n\nbaz\r\n\r\n" -> {"foo", "bar", "baz"}.
std::vector<std::string> split_lines(const std::string &str);
-// Parse the configuration file.
-std::vector<ConfigLine> parse_config(const std::string &filename);
-
-// Note: Limits are inclusive.
-int fetch_config_int(const std::vector<ConfigLine> &config, const std::string &keyword, int min_limit, int max_limit);
+// Extract HTTP headers from a request or response. Ignores the first line,
+// where the verb or the return code is.
+HTTPHeaderMultimap extract_headers(const std::vector<std::string> &lines, const std::string &log_context);
// Add the new data to an existing string, looking for \r\n\r\n
// (typical of HTTP requests and/or responses). Will return one