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Diffstat (limited to 'src/osd/modules/file/posixsocket.cpp')
-rw-r--r--src/osd/modules/file/posixsocket.cpp150
1 files changed, 144 insertions, 6 deletions
diff --git a/src/osd/modules/file/posixsocket.cpp b/src/osd/modules/file/posixsocket.cpp
index 6a23e747ea1..f2f9c7a6b93 100644
--- a/src/osd/modules/file/posixsocket.cpp
+++ b/src/osd/modules/file/posixsocket.cpp
@@ -28,10 +28,13 @@
#include <unistd.h>
+#define DEBUG_SOCKET (0)
+
namespace {
char const *const posixfile_socket_identifier = "socket.";
char const *const posixfile_domain_identifier = "domain.";
+char const *const posixfile_udp_identifier = "udp.";
class posix_osd_socket : public osd_file
@@ -42,9 +45,11 @@ public:
posix_osd_socket& operator=(posix_osd_socket const &) = delete;
posix_osd_socket& operator=(posix_osd_socket &&) = delete;
- posix_osd_socket(int sock, bool listening) noexcept
+ posix_osd_socket(int sock, bool listening, uint32_t dest = 0, uint32_t dport = 0) noexcept
: m_sock(sock)
, m_listening(listening)
+ , m_dest(dest)
+ , m_dport(dport)
{
assert(m_sock >= 0);
}
@@ -112,11 +117,26 @@ public:
virtual std::error_condition write(void const *buffer, std::uint64_t offset, std::uint32_t count, std::uint32_t &actual) noexcept override
{
- ssize_t const result = ::write(m_sock, buffer, count);
- if (result < 0)
- return std::error_condition(errno, std::generic_category());
+ if (!m_dest) {
+ ssize_t const result = ::write(m_sock, buffer, count);
+ if (result < 0)
+ return std::error_condition(errno, std::generic_category());
- actual = std::uint32_t(size_t(result));
+ actual = std::uint32_t(size_t(result));
+ }
+ else
+ {
+ sockaddr_in dest;
+ dest.sin_family = AF_INET;
+ dest.sin_addr.s_addr = m_dest;
+ dest.sin_port = htons(m_dport);
+ //printf("Sending to %d bytes %s port %d\n", count, inet_ntoa(dest.sin_addr), m_dport);
+ ssize_t const result = ::sendto(m_sock, reinterpret_cast<const char*>(buffer), count, 0, reinterpret_cast <sockaddr*> (&dest), sizeof(dest));
+ if (result < 0)
+ return std::error_condition(errno, std::generic_category());
+ actual = std::uint32_t(size_t(result));
+
+ }
return std::error_condition();
}
@@ -135,6 +155,8 @@ public:
private:
int m_sock;
bool m_listening;
+ uint32_t m_dest;
+ uint32_t m_dport;
};
@@ -209,8 +231,19 @@ bool posix_check_domain_path(std::string const &path) noexcept
}
-std::error_condition posix_open_socket(std::string const &path, std::uint32_t openflags, osd_file::ptr &file, std::uint64_t &filesize) noexcept
+bool posix_check_udp_path(std::string const &path) noexcept
{
+ if (strncmp(path.c_str(), posixfile_udp_identifier, strlen(posixfile_udp_identifier)) == 0 &&
+ strchr(path.c_str(), ':') != nullptr) return true;
+ return false;
+}
+
+
+std::error_condition posix_open_tcp_socket(std::string const &path, std::uint32_t openflags, osd_file::ptr &file, std::uint64_t &filesize) noexcept
+{
+ if (DEBUG_SOCKET)
+ printf("Trying to open tcp socket %s\n", path.c_str());
+
char hostname[256];
int port;
std::sscanf(&path[strlen(posixfile_socket_identifier)], "%255[^:]:%d", hostname, &port);
@@ -262,3 +295,108 @@ std::error_condition posix_open_domain(std::string const &path, std::uint32_t op
return create_socket(sau, sock, openflags, file, filesize);
}
+
+std::error_condition posix_open_udp_socket(std::string const &path, std::uint32_t openflags, osd_file::ptr &file, std::uint64_t &filesize) noexcept
+{
+ if (DEBUG_SOCKET)
+ printf("Trying to open udp socket %s\n", path.c_str());
+
+ char hostname[256];
+ int port;
+ std::sscanf(&path[strlen(posixfile_udp_identifier)], "%255[^:]:%d", hostname, &port);
+
+ struct hostent const* const localhost = ::gethostbyname(hostname);
+ if (!localhost)
+ return std::errc::no_such_file_or_directory;
+
+ struct sockaddr_in sai;
+ memset(&sai, 0, sizeof(sai));
+ sai.sin_family = AF_INET;
+ sai.sin_port = htons(port);
+ sai.sin_addr = *reinterpret_cast<struct in_addr*>(localhost->h_addr);
+
+ int const sock = ::socket(AF_INET, SOCK_DGRAM, 0);
+ if (sock < 0)
+ {
+ if (DEBUG_SOCKET)
+ printf("socket() error\n");
+ return std::error_condition(errno, std::generic_category());
+ }
+
+ int const flag = 1;
+ if (::setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, reinterpret_cast<const char*>(&flag), sizeof(flag)) < 0)
+ {
+ if (DEBUG_SOCKET)
+ printf("SO_REUSEADDR error\n");
+ ::close(sock);
+ return std::error_condition(errno, std::generic_category());
+ }
+
+ // local socket support
+ osd_file::ptr result;
+ if (openflags & OPEN_FLAG_CREATE)
+ {
+ sai.sin_addr.s_addr = htonl(INADDR_ANY);
+ if (DEBUG_SOCKET)
+ printf("Listening on '%s' on port '%d'\n", hostname, port);
+
+ // bind socket...
+ if (::bind(sock, reinterpret_cast<struct sockaddr const*>(&sai), sizeof(struct sockaddr)) < 0)
+ {
+ printf("bind error\n");
+ std::error_condition sockbinderr(errno, std::generic_category());
+ ::close(sock);
+ return sockbinderr;
+ }
+
+ // Setup multicast
+ struct ip_mreq mreq;
+ mreq.imr_multiaddr = *reinterpret_cast<struct in_addr*>(localhost->h_addr);
+ mreq.imr_interface.s_addr = htonl(INADDR_ANY);
+ if (DEBUG_SOCKET)
+ printf("imr_multaddr: %08x\n", mreq.imr_multiaddr.s_addr);
+ if ((mreq.imr_multiaddr.s_addr & 0xff) >= 224 && (mreq.imr_multiaddr.s_addr & 0xff) <= 239)
+ {
+ if (DEBUG_SOCKET)
+ printf("Setting up udp multicast %s\n", hostname);
+ if (::setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&mreq, sizeof(mreq)) < 0) {
+ if (DEBUG_SOCKET)
+ printf("IP_ADD_MEMBERSHIP error\n");
+ std::error_condition membererr(errno, std::generic_category());
+ ::close(sock);
+ return membererr;
+ }
+ }
+
+ // Disable loopback on multicast
+ char const loop = 0;
+ if (::setsockopt(sock, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop)))
+ {
+ if (DEBUG_SOCKET)
+ printf("IP_MULTICAST_LOOP error\n");
+ std::error_condition multierr(errno, std::generic_category());
+ ::close(sock);
+ return multierr;
+ }
+
+ // Set ttl on multicast
+ char const ttl = 15;
+ if (::setsockopt(sock, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)))
+ {
+ if (DEBUG_SOCKET)
+ printf("IP_MULTICAST_TTL error\n");
+ std::error_condition multierr(errno, std::generic_category());
+ ::close(sock);
+ return multierr;
+ }
+ result.reset(new (std::nothrow) posix_osd_socket(sock, false, (*reinterpret_cast<struct in_addr*>(localhost->h_addr)).s_addr, port));
+ }
+ if (!result)
+ {
+ ::close(sock);
+ return std::errc::permission_denied;
+ }
+ file = std::move(result);
+ filesize = 0;
+ return std::error_condition();
+}