#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <net/if.h>
#include <sys/socket.h>
#include <map>
#include <string>
using namespace std;
-#define DEFAULT_BACKLOG_SIZE 1048576
+#define DEFAULT_BACKLOG_SIZE 10485760
struct ConfigLine {
string keyword;
map<string, string> parameters;
};
+namespace {
+
+bool parse_hostport(const string &hostport, sockaddr_in6 *addr)
+{
+ memset(addr, 0, sizeof(*addr));
+ addr->sin6_family = AF_INET6;
+
+ string port_string;
+
+ // See if the argument if on the type [ipv6addr]:port.
+ if (!hostport.empty() && hostport[0] == '[') {
+ size_t split = hostport.find("]:");
+ if (split == string::npos) {
+ log(ERROR, "address '%s' is malformed; must be either [ipv6addr]:port or ipv4addr:port");
+ return false;
+ }
+
+ string host(hostport.begin() + 1, hostport.begin() + split);
+ port_string = hostport.substr(split + 2);
+
+ if (inet_pton(AF_INET6, host.c_str(), &addr->sin6_addr) != 1) {
+ log(ERROR, "'%s' is not a valid IPv6 address");
+ return false;
+ }
+ } else {
+ // OK, then it must be ipv4addr:port.
+ size_t split = hostport.find(":");
+ if (split == string::npos) {
+ log(ERROR, "address '%s' is malformed; must be either [ipv6addr]:port or ipv4addr:port");
+ return false;
+ }
+
+ string host(hostport.begin(), hostport.begin() + split);
+ port_string = hostport.substr(split + 1);
+
+ // Parse to an IPv4 address, then construct a mapped-v4 address from that.
+ in_addr addr4;
+
+ if (inet_pton(AF_INET, host.c_str(), &addr4) != 1) {
+ log(ERROR, "'%s' is not a valid IPv4 address");
+ return false;
+ }
+
+ addr->sin6_addr.s6_addr32[2] = htonl(0xffff);
+ addr->sin6_addr.s6_addr32[3] = addr4.s_addr;
+ }
+
+ int port = atoi(port_string.c_str());
+ if (port < 1 || port >= 65536) {
+ log(ERROR, "port %d is out of range (must be [1,65536>).", port);
+ return false;
+ }
+ addr->sin6_port = ntohs(port);
+
+ return true;
+}
+
bool read_config(const string &filename, vector<ConfigLine> *lines)
{
FILE *fp = fopen(filename.c_str(), "r");
lines->push_back(line);
}
- fclose(fp);
+ if (fclose(fp) == EOF) {
+ log_perror(filename.c_str());
+ return false;
+ }
return true;
}
}
AcceptorConfig acceptor;
- acceptor.addr = CreateAnyAddress(port);
+ acceptor.addr = create_any_address(port);
config->acceptors.push_back(acceptor);
return true;
return false;
}
- string addr_string = line.arguments[0];
- if (addr_string.empty()) {
- // Actually, this should never happen.
- log(ERROR, "'listen' argument cannot be empty");
- return false;
- }
-
- string port_string;
-
AcceptorConfig acceptor;
- memset(&acceptor.addr, 0, sizeof(acceptor.addr));
- acceptor.addr.sin6_family = AF_INET6;
- if (addr_string[0] == '[') {
- // IPv6 address: [addr]:port.
- size_t addr_end = addr_string.find("]:");
- if (addr_end == string::npos) {
- log(ERROR, "IPv6 address '%s' should be on form [address]:port", addr_string.c_str());
- return false;
- }
-
- string addr_only = addr_string.substr(1, addr_end - 1);
- if (inet_pton(AF_INET6, addr_only.c_str(), &acceptor.addr.sin6_addr) != 1) {
- log(ERROR, "Invalid IPv6 address '%s'", addr_only.c_str());
- return false;
- }
-
- port_string = addr_string.substr(addr_end + 2);
- } else {
- // IPv4 address: addr:port.
- size_t addr_end = addr_string.find(":");
- if (addr_end == string::npos) {
- log(ERROR, "IPv4 address '%s' should be on form address:port", addr_string.c_str());
- return false;
- }
-
- in_addr addr4;
- string addr_only = addr_string.substr(0, addr_end);
- if (inet_pton(AF_INET, addr_only.c_str(), &addr4) != 1) {
- log(ERROR, "Invalid IPv4 address '%s'", addr_only.c_str());
- return false;
- }
-
- // Convert to a v4-mapped address.
- acceptor.addr.sin6_addr.s6_addr32[2] = htonl(0xffff);
- acceptor.addr.sin6_addr.s6_addr32[3] = addr4.s_addr;
- port_string = addr_string.substr(addr_end + 1);
- }
-
- int port = atoi(port_string.c_str());
- if (port < 1 || port >= 65536) {
- log(ERROR, "port %d is out of range (must be [1,65536>).", port);
+ if (!parse_hostport(line.arguments[0], &acceptor.addr)) {
return false;
}
- acceptor.addr.sin6_port = ntohs(port);
-
config->acceptors.push_back(acceptor);
return true;
}
-int allocate_mark_pool(int from, int to, Config *config)
-{
- int pool_index = -1;
-
- // Reuse mark pools if an identical one exists.
- // Otherwise, check if we're overlapping some other mark pool.
- for (size_t i = 0; i < config->mark_pools.size(); ++i) {
- const MarkPoolConfig &pool = config->mark_pools[i];
- if (from == pool.from && to == pool.to) {
- pool_index = i;
- } else if ((from >= pool.from && from < pool.to) ||
- (to >= pool.from && to < pool.to)) {
- log(WARNING, "Mark pool %d-%d partially overlaps with %d-%d, you may get duplicate marks."
- "Mark pools must either be completely disjunct, or completely overlapping.",
- from, to, pool.from, pool.to);
- }
- }
-
- if (pool_index != -1) {
- return pool_index;
- }
-
- // No match to existing pools.
- MarkPoolConfig pool;
- pool.from = from;
- pool.to = to;
- config->mark_pools.push_back(pool);
-
- return config->mark_pools.size() - 1;
-}
-
-bool parse_mark_pool(const string &mark_str, int *from, int *to)
-{
- size_t split = mark_str.find_first_of('-');
- if (split == string::npos) {
- log(ERROR, "Invalid mark specification '%s' (expected 'X-Y').",
- mark_str.c_str());
- return false;
- }
-
- string from_str(mark_str.begin(), mark_str.begin() + split);
- string to_str(mark_str.begin() + split + 1, mark_str.end());
- *from = atoi(from_str.c_str());
- *to = atoi(to_str.c_str());
-
- if (*from <= 0 || *from >= 65536 || *to <= 0 || *to >= 65536) {
- log(ERROR, "Mark pool range %d-%d is outside legal range [1,65536>.",
- *from, *to);
- return false;
- }
-
- return true;
-}
-
bool parse_stream(const ConfigLine &line, Config *config)
{
if (line.arguments.size() != 1) {
stream.backlog_size = atoi(backlog_it->second.c_str());
}
+ map<string, string>::const_iterator prebuffer_it = line.parameters.find("force_prebuffer");
+ if (prebuffer_it == line.parameters.end()) {
+ stream.prebuffering_bytes = 0;
+ } else {
+ stream.prebuffering_bytes = atoi(prebuffer_it->second.c_str());
+ }
+
// Parse encoding.
map<string, string>::const_iterator encoding_parm_it = line.parameters.find("encoding");
if (encoding_parm_it == line.parameters.end() ||
return false;
}
- // Parse marks, if so desired.
- map<string, string>::const_iterator mark_parm_it = line.parameters.find("mark");
- if (mark_parm_it == line.parameters.end()) {
- stream.mark_pool = -1;
- } else {
- int from, to;
- if (!parse_mark_pool(mark_parm_it->second, &from, &to)) {
- return false;
- }
- stream.mark_pool = allocate_mark_pool(from, to, config);
- }
-
// Parse the pacing rate, converting from kilobits to bytes as needed.
map<string, string>::const_iterator pacing_rate_it = line.parameters.find("pacing_rate_kbit");
if (pacing_rate_it == line.parameters.end()) {
UDPStreamConfig udpstream;
string hostport = line.arguments[0];
-
- // See if the argument if on the type [ipv6addr]:port.
- if (!hostport.empty() && hostport[0] == '[') {
- size_t split = hostport.find("]:");
- if (split == string::npos) {
- log(ERROR, "udpstream destination '%s' is malformed; must be either [ipv6addr]:port or ipv4addr:port");
- return false;
- }
-
- string host(hostport.begin() + 1, hostport.begin() + split);
- string port = hostport.substr(split + 2);
-
- udpstream.dst.sin6_family = AF_INET6;
- if (inet_pton(AF_INET6, host.c_str(), &udpstream.dst.sin6_addr) != 1) {
- log(ERROR, "udpstream destination host '%s' is not a valid IPv6 address");
- return false;
- }
-
- udpstream.dst.sin6_port = htons(atoi(port.c_str())); // TODO: Verify validity.
- } else {
- // OK, then it must be ipv4addr:port.
- size_t split = hostport.find(":");
- if (split == string::npos) {
- log(ERROR, "udpstream destination '%s' is malformed; must be either [ipv6addr]:port or ipv4addr:port");
- return false;
- }
-
- string host(hostport.begin(), hostport.begin() + split);
- string port = hostport.substr(split + 1);
-
- // Parse to an IPv4 address, then construct a mapped-v4 address from that.
- in_addr addr4;
-
- if (inet_pton(AF_INET, host.c_str(), &addr4) != 1) {
- log(ERROR, "udpstream destination host '%s' is not a valid IPv4 address");
- return false;
- }
-
- udpstream.dst.sin6_family = AF_INET6;
- udpstream.dst.sin6_addr.s6_addr32[0] = 0;
- udpstream.dst.sin6_addr.s6_addr32[1] = 0;
- udpstream.dst.sin6_addr.s6_addr32[2] = htonl(0xffff);
- udpstream.dst.sin6_addr.s6_addr32[3] = addr4.s_addr;
- udpstream.dst.sin6_port = htons(atoi(port.c_str())); // TODO: Verify validity.
+ if (!parse_hostport(hostport, &udpstream.dst)) {
+ return false;
}
map<string, string>::const_iterator src_it = line.parameters.find("src");
// TODO: Verify that the URL is parseable?
}
- // Parse marks, if so desired.
- map<string, string>::const_iterator mark_parm_it = line.parameters.find("mark");
- if (mark_parm_it == line.parameters.end()) {
- udpstream.mark_pool = -1;
- } else {
- int from, to;
- if (!parse_mark_pool(mark_parm_it->second, &from, &to)) {
- return false;
- }
- udpstream.mark_pool = allocate_mark_pool(from, to, config);
- }
-
// Parse the pacing rate, converting from kilobits to bytes as needed.
map<string, string>::const_iterator pacing_rate_it = line.parameters.find("pacing_rate_kbit");
if (pacing_rate_it == line.parameters.end()) {
udpstream.pacing_rate = atoi(pacing_rate_it->second.c_str()) * 1024 / 8;
}
+ // Parse the TTL. The same value is used for unicast and multicast.
+ map<string, string>::const_iterator ttl_it = line.parameters.find("ttl");
+ if (ttl_it == line.parameters.end()) {
+ udpstream.ttl = -1;
+ } else {
+ udpstream.ttl = atoi(ttl_it->second.c_str());
+ }
+
+ // Parse the multicast interface index.
+ map<string, string>::const_iterator multicast_iface_it = line.parameters.find("multicast_output_interface");
+ if (multicast_iface_it == line.parameters.end()) {
+ udpstream.multicast_iface_index = -1;
+ } else {
+ udpstream.multicast_iface_index = if_nametoindex(multicast_iface_it->second.c_str());
+ if (udpstream.multicast_iface_index == 0) {
+ log(ERROR, "Interface '%s' does not exist", multicast_iface_it->second.c_str());
+ return false;
+ }
+ }
+
config->udpstreams.push_back(udpstream);
return true;
}
return true;
}
+} // namespace
+
bool parse_config(const string &filename, Config *config)
{
vector<ConfigLine> lines;