X-Git-Url: https://git.sesse.net/?p=cubemap;a=blobdiff_plain;f=parse.cpp;h=c33543f3afc44b12ce1d16fa88a9616dd560b2c2;hp=0747afb9e495334e41fec2bd639695b7bb172a29;hb=5b6002ffa927ae9987d978126fa7cc30067ac1f2;hpb=17d773d2d45d495704e974b9246eccb21faa8635

diff --git a/parse.cpp b/parse.cpp
index 0747afb..c33543f 100644
--- a/parse.cpp
+++ b/parse.cpp
@@ -1,11 +1,9 @@
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
 #include <ctype.h>
-#include <assert.h>
-#include <vector>
+#include <string.h>
 #include <string>
+#include <vector>
 
+#include "log.h"
 #include "parse.h"
 
 using namespace std;
@@ -58,86 +56,55 @@ vector<string> split_lines(const string &str)
 	return ret;
 }
 
-vector<ConfigLine> parse_config(const string &filename)
+multimap<string, string> extract_headers(const vector<string> &lines, const string &log_context)
 {
-	vector<ConfigLine> ret;
-
-	FILE *fp = fopen(filename.c_str(), "r");
-	if (fp == NULL) {
-		perror(filename.c_str());
-		exit(1);
-	}
-
-	char buf[4096];
-	while (!feof(fp)) {
-		if (fgets(buf, sizeof(buf), fp) == NULL) {
-			break;
+	multimap<string, string> parameters;
+	for (size_t i = 1; i < lines.size(); ++i) {
+		size_t split = lines[i].find(":");
+		if (split == string::npos) {
+			log(WARNING, "[%s] Ignoring malformed HTTP response line '%s'",
+			        log_context.c_str(), lines[i].c_str());
+			continue;
 		}
 
-		// Chop off the string at the first #, \r or \n.
-		buf[strcspn(buf, "#\r\n")] = 0;
-
-		// Remove all whitespace from the end of the string.
-		size_t len = strlen(buf);
-		while (len > 0 && isspace(buf[len - 1])) {
-			buf[--len] = 0;
-		}
+		string key(lines[i].begin(), lines[i].begin() + split);
 
-		// If the line is now all blank, ignore it.
-		if (len == 0) {
-			continue;
-		}
+		// Skip any spaces after the colon.
+		do {
+			++split;
+		} while (split < lines[i].size() && lines[i][split] == ' ');
 
-		vector<string> tokens = split_tokens(buf);
-		assert(!tokens.empty());
-		
-		ConfigLine line;
-		line.keyword = tokens[0];
-
-		for (size_t i = 1; i < tokens.size(); ++i) {
-			// foo=bar is a parameter; anything else is an argument.
-			size_t equals_pos = tokens[i].find_first_of('=');
-			if (equals_pos == string::npos) {
-				line.arguments.push_back(tokens[i]);
-			} else {
-				string key = tokens[i].substr(0, equals_pos);
-				string value = tokens[i].substr(equals_pos + 1, string::npos);
-				line.parameters.insert(make_pair(key, value));
-			}
-		}
+		string value(lines[i].begin() + split, lines[i].end());
 
-		ret.push_back(line);
+		parameters.insert(make_pair(key, value));
 	}
 
-	fclose(fp);
-	return ret;
+	return parameters;
 }
 
-int fetch_config_int(const vector<ConfigLine> &config, const string &keyword, int min_limit, int max_limit)
+#define MAX_REQUEST_SIZE 16384  /* 16 kB. */
+
+RequestParseStatus wait_for_double_newline(string *existing_data, const char *new_data, size_t new_data_size)
 {
-	bool value_found = false;
-	int value = -1;
-	for (unsigned i = 0; i < config.size(); ++i) {
-		if (config[i].keyword != keyword) {
-			continue;
-		}
-		if (config[i].parameters.size() > 0 ||
-		    config[i].arguments.size() != 1) {
-			fprintf(stderr, "ERROR: '%s' takes one argument and no parameters\n", keyword.c_str());
-			exit(1);
-		}
-		value_found = true;
-		value = atoi(config[i].arguments[0].c_str());  // TODO: verify int validity.
-	}
-	if (!value_found) {
-		fprintf(stderr, "ERROR: Missing '%s' statement in config file.\n",
-			keyword.c_str());
-		exit(1);
+	// Guard against overlong requests gobbling up all of our space.
+	if (existing_data->size() + new_data_size > MAX_REQUEST_SIZE) {
+		return RP_OUT_OF_SPACE;
+	}	
+
+	// See if we have \r\n\r\n anywhere in the request. We start three bytes
+	// before what we just appended, in case we just got the final character.
+	size_t existing_data_bytes = existing_data->size();
+	existing_data->append(string(new_data, new_data + new_data_size));
+	
+	const size_t start_at = (existing_data_bytes >= 3 ? existing_data_bytes - 3 : 0);
+	const char *ptr = reinterpret_cast<char *>(
+		memmem(existing_data->data() + start_at, existing_data->size() - start_at,
+		       "\r\n\r\n", 4));
+	if (ptr == NULL) {
+		return RP_NOT_FINISHED_YET;
 	}
-	if (value < min_limit || value > max_limit) {
-		fprintf(stderr, "ERROR: '%s' is set to %d, must be in [%d,%d]\n",
-			keyword.c_str(), value, min_limit, max_limit);
-		exit(1);
+	if (ptr != existing_data->data() + existing_data->size() - 4) {
+		return RP_EXTRA_DATA;
 	}
-	return value;
+	return RP_FINISHED;
 }