#include "server.h"
#include "serverpool.h"
#include "parse.h"
+#include "state.pb.h"
using namespace std;
extern ServerPool *servers;
+
+// Extremely rudimentary URL parsing.
+bool parse_url(const string &url, string *host, string *port, string *path)
+{
+ if (url.find("http://") != 0) {
+ return false;
+ }
+
+ string rest = url.substr(strlen("http://"));
+ size_t split = rest.find_first_of(":/");
+ if (split == string::npos) {
+ // http://foo
+ *host = rest;
+ *port = "http";
+ *path = "/";
+ return true;
+ }
+
+ *host = string(rest.begin(), rest.begin() + split);
+ char ch = rest[split]; // Colon or slash.
+ rest = string(rest.begin() + split + 1, rest.end());
+
+ if (ch == ':') {
+ // Parse the port.
+ split = rest.find_first_of('/');
+ if (split == string::npos) {
+ // http://foo:1234
+ *port = rest;
+ *path = "/";
+ return true;
+ } else {
+ // http://foo:1234/bar
+ *port = string(rest.begin(), rest.begin() + split);
+ *path = string(rest.begin() + split, rest.end());
+ return true;
+ }
+ }
+
+ // http://foo/bar
+ *port = "http";
+ *path = rest;
+ return true;
+}
Input::Input(const string &stream_id, const string &url)
: state(NOT_CONNECTED),
stream_id(stream_id),
url(url),
- // TODO
- host("gruessi.zrh.sesse.net"),
- port("4013"),
- path("/test.flv"),
has_metacube_header(false),
sock(-1)
{
}
+Input::Input(const InputProto &serialized)
+ : state(State(serialized.state())),
+ stream_id(serialized.stream_id()),
+ url(serialized.url()),
+ request(serialized.request()),
+ request_bytes_sent(serialized.request_bytes_sent()),
+ response(serialized.response()),
+ http_header(serialized.http_header()),
+ has_metacube_header(serialized.has_metacube_header()),
+ sock(serialized.sock())
+{
+ pending_data.resize(serialized.pending_data().size());
+ memcpy(&pending_data[0], serialized.pending_data().data(), serialized.pending_data().size());
+
+ parse_url(url, &host, &port, &path); // Don't care if it fails.
+}
+
+InputProto Input::serialize() const
+{
+ InputProto serialized;
+ serialized.set_state(state);
+ serialized.set_stream_id(stream_id);
+ serialized.set_url(url);
+ serialized.set_request(request);
+ serialized.set_request_bytes_sent(request_bytes_sent);
+ serialized.set_response(response);
+ serialized.set_http_header(http_header);
+ serialized.set_pending_data(string(pending_data.begin(), pending_data.end()));
+ serialized.set_has_metacube_header(has_metacube_header);
+ serialized.set_sock(sock);
+ return serialized;
+}
+
void Input::run()
{
should_stop = false;
freeaddrinfo(ai);
return -1;
}
+
+bool Input::parse_response(const std::string &request)
+{
+ vector<string> lines = split_lines(response);
+ if (lines.empty()) {
+ fprintf(stderr, "WARNING: Empty HTTP response from input.\n");
+ return false;
+ }
+
+ vector<string> first_line_tokens = split_tokens(lines[0]);
+ if (first_line_tokens.size() < 2) {
+ fprintf(stderr, "WARNING: Malformed response line '%s' from input.\n",
+ lines[0].c_str());
+ return false;
+ }
+
+ int response = atoi(first_line_tokens[1].c_str());
+ if (response != 200) {
+ fprintf(stderr, "WARNING: Non-200 response '%s' from input.\n",
+ lines[0].c_str());
+ return false;
+ }
+
+ multimap<string, string> parameters;
+ for (size_t i = 1; i < lines.size(); ++i) {
+ size_t split = lines[i].find(":");
+ if (split == string::npos) {
+ fprintf(stderr, "WARNING: Ignoring malformed HTTP response line '%s'\n",
+ lines[i].c_str());
+ continue;
+ }
+
+ string key(lines[i].begin(), lines[i].begin() + split);
+
+ // Skip any spaces after the colon.
+ do {
+ ++split;
+ } while (split < lines[i].size() && lines[i][split] == ' ');
+
+ string value(lines[i].begin() + split, lines[i].end());
+
+ // Remove “Content-encoding: metacube”.
+ // TODO: Make case-insensitive.
+ if (key == "Content-encoding" && value == "metacube") {
+ continue;
+ }
+
+ parameters.insert(make_pair(key, value));
+ }
+
+ // Change “Server: foo” to “Server: metacube/0.1 (reflecting: foo)”
+ // TODO: Make case-insensitive.
+ // XXX: Use a Via: instead?
+ if (parameters.count("Server") == 0) {
+ parameters.insert(make_pair("Server", "metacube/0.1"));
+ } else {
+ for (multimap<string, string>::iterator it = parameters.begin();
+ it != parameters.end();
+ ++it) {
+ if (it->first != "Server") {
+ continue;
+ }
+ it->second = "metacube/0.1 (reflecting: " + it->second + ")";
+ }
+ }
+
+ // Construct the new HTTP header.
+ http_header = "HTTP/1.0 200 OK\r\n";
+ for (multimap<string, string>::iterator it = parameters.begin();
+ it != parameters.end();
+ ++it) {
+ http_header.append(it->first + ": " + it->second + "\r\n");
+ }
+ http_header.append("\r\n");
+ servers->set_header(stream_id, http_header);
+
+ return true;
+}
void Input::do_work()
{
request.clear();
request_bytes_sent = 0;
response.clear();
+
+ if (!parse_url(url, &host, &port, &path)) {
+ fprintf(stderr, "Failed to parse URL '%s'\n", url.c_str());
+ break;
+ }
sock = lookup_and_connect(host, port);
if (sock != -1) {
response.resize(ptr - response.data());
}
- // TODO: Check that the response is 200, save the headers, etc.
+ if (!parse_response(response)) {
+ state = CLOSING_SOCKET;
+ continue;
+ }
if (!extra_data.empty()) {
process_data(&extra_data[0], extra_data.size());
char *inner_data = pending_data.data() + sizeof(metacube_block_header);
if (flags & METACUBE_FLAGS_HEADER) {
string header(inner_data, inner_data + size);
- servers->set_header(stream_id, header);
+ servers->set_header(stream_id, http_header + header);
} else {
servers->add_data(stream_id, inner_data, size);
}
projects / cubemap / blobdiff