-#include <stdio.h>
-#include <string.h>
-#include <stdint.h>
-#include <assert.h>
-#include <arpa/inet.h>
-#include <curl/curl.h>
-#include <sys/socket.h>
-#include <pthread.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/epoll.h>
-#include <errno.h>
-#include <vector>
+#include <stddef.h>
#include <string>
-#include <map>
-#include "metacube.h"
-#include "mutexlock.h"
+#include "httpinput.h"
#include "input.h"
-#include "server.h"
+#include "state.pb.h"
+#include "udpinput.h"
using namespace std;
-extern Server *servers;
+namespace {
-Input::Input(const string &stream_id, const string &url)
- : stream_id(stream_id),
- url(url),
- has_metacube_header(false)
+// Does not support passwords, only user:host, since this is really only used
+// to parse VLC's udp://source@multicastgroup:1234/ syntax (we do not support
+// even basic auth).
+void split_user_host(const string &user_host, string *user, string *host)
{
-}
-
-void Input::run()
-{
- should_stop = false;
-
- // Joinable is already the default, but it's good to be certain.
- pthread_attr_t attr;
- pthread_attr_init(&attr);
- pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
- pthread_create(&worker_thread, &attr, Input::do_work_thunk, this);
-}
-
-void Input::stop()
-{
- should_stop = true;
-
- if (pthread_join(worker_thread, NULL) == -1) {
- perror("pthread_join");
- exit(1);
+ size_t split = user_host.find("@");
+ if (split == string::npos) {
+ user->clear();
+ *host = user_host;
+ } else {
+ *user = string(user_host.begin(), user_host.begin() + split);
+ *host = string(user_host.begin() + split + 1, user_host.end());
}
}
-void *Input::do_work_thunk(void *arg)
-{
- Input *input = static_cast<Input *>(arg);
- input->do_work();
- return NULL;
-}
-
-void Input::do_work()
-{
- CURL *curl = curl_easy_init();
-
- for ( ;; ) {
- curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &Input::curl_callback_thunk);
- curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
- curl_easy_perform(curl);
- printf("Transfer ended, waiting 0.2 seconds and restarting...\n");
- usleep(200000);
- }
-}
+} // namespace
-size_t Input::curl_callback_thunk(char *ptr, size_t size, size_t nmemb, void *userdata)
+// Extremely rudimentary URL parsing.
+bool parse_url(const string &url, string *protocol, string *user, string *host, string *port, string *path)
{
- Input *input = static_cast<Input *>(userdata);
- if (input->should_stop) {
- return 0;
+ size_t split = url.find("://");
+ if (split == string::npos) {
+ return false;
}
+ *protocol = string(url.begin(), url.begin() + split);
- size_t bytes = size * nmemb;
- input->curl_callback(ptr, bytes);
- return bytes;
-}
-
-void Input::curl_callback(char *ptr, size_t bytes)
-{
- pending_data.insert(pending_data.end(), ptr, ptr + bytes);
-
- for ( ;; ) {
- // If we don't have enough data (yet) for even the Metacube header, just return.
- if (pending_data.size() < sizeof(metacube_block_header)) {
- return;
- }
+ string rest = string(url.begin() + split + 3, url.end());
- // Make sure we have the Metacube sync header at the start.
- // We may need to skip over junk data (it _should_ not happen, though).
- if (!has_metacube_header) {
- char *ptr = static_cast<char *>(
- memmem(pending_data.data(), pending_data.size(),
- METACUBE_SYNC, strlen(METACUBE_SYNC)));
- if (ptr == NULL) {
- // OK, so we didn't find the sync marker. We know then that
- // we do not have the _full_ marker in the buffer, but we
- // could have N-1 bytes. Drop everything before that,
- // and then give up.
- drop_pending_data(pending_data.size() - (strlen(METACUBE_SYNC) - 1));
- return;
- } else {
- // Yay, we found the header. Drop everything (if anything) before it.
- drop_pending_data(ptr - pending_data.data());
- has_metacube_header = true;
-
- // Re-check that we have the entire header; we could have dropped data.
- if (pending_data.size() < sizeof(metacube_block_header)) {
- return;
- }
+ // Split at the first slash, or the first colon that's not within [].
+ bool within_brackets = false;
+ for (split = 0; split < rest.size(); ++split) {
+ if (rest[split] == '[') {
+ if (within_brackets) {
+ // Can't nest brackets.
+ return false;
}
+ within_brackets = true;
+ } else if (rest[split] == ']') {
+ if (!within_brackets) {
+ // ] without matching [.
+ return false;
+ }
+ within_brackets = false;
+ } else if (rest[split] == '/') {
+ break;
+ } else if (rest[split] == ':' && !within_brackets) {
+ break;
}
+ }
- // Now it's safe to read the header.
- metacube_block_header *hdr = reinterpret_cast<metacube_block_header *>(pending_data.data());
- assert(memcmp(hdr->sync, METACUBE_SYNC, sizeof(hdr->sync)) == 0);
- uint32_t size = ntohl(hdr->size);
- uint32_t flags = ntohl(hdr->flags);
+ if (split == rest.size()) {
+ // http://foo
+ split_user_host(rest, user, host);
+ *port = *protocol;
+ *path = "/";
+ return true;
+ }
- // See if we have the entire block. If not, wait for more data.
- if (pending_data.size() < sizeof(metacube_block_header) + size) {
- return;
+ split_user_host(string(rest.begin(), rest.begin() + split), user, host);
+ 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;
}
+ }
- process_block(pending_data.data() + sizeof(metacube_block_header), size, flags);
+ // http://foo/bar
+ *port = *protocol;
+ *path = "/" + rest;
+ return true;
+}
- // Consume this block. This isn't the most efficient way of dealing with things
- // should we have many blocks, but these routines don't need to be too efficient
- // anyway.
- pending_data.erase(pending_data.begin(), pending_data.begin() + sizeof(metacube_block_header) + size);
+Input *create_input(const string &url, Input::Encoding encoding)
+{
+ string protocol, user, host, port, path;
+ if (!parse_url(url, &protocol, &user, &host, &port, &path)) {
+ return NULL;
}
-}
-
-void Input::process_block(const char *data, uint32_t size, uint32_t flags)
-{
- if (flags & METACUBE_FLAGS_HEADER) {
- string header(data, data + size);
- for (int i = 0; i < NUM_SERVERS; ++i) {
- servers[i].set_header(stream_id, header);
- }
- } else {
- for (int i = 0; i < NUM_SERVERS; ++i) {
- servers[i].add_data(stream_id, data, size);
+ if (protocol == "http") {
+ return new HTTPInput(url, encoding);
+ }
+ if (protocol == "udp") {
+ if (encoding == Input::INPUT_ENCODING_METACUBE) {
+ return NULL;
}
+ return new UDPInput(url);
}
+ return NULL;
}
-void Input::drop_pending_data(size_t num_bytes)
+Input *create_input(const InputProto &serialized)
{
- if (num_bytes == 0) {
- return;
+ string protocol, user, host, port, path;
+ if (!parse_url(serialized.url(), &protocol, &user, &host, &port, &path)) {
+ return NULL;
}
- fprintf(stderr, "Warning: Dropping %lld junk bytes from stream, maybe it is not a Metacube stream?\n",
- (long long)num_bytes);
- pending_data.erase(pending_data.begin(), pending_data.begin() + num_bytes);
+ if (protocol == "http") {
+ return new HTTPInput(serialized);
+ }
+ if (protocol == "udp") {
+ return new UDPInput(serialized);
+ }
+ return NULL;
}
+Input::~Input() {}
+
projects / cubemap / blobdiff