aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDeterminant <tederminant@gmail.com>2019-06-03 17:30:01 -0400
committerDeterminant <tederminant@gmail.com>2019-06-03 17:30:01 -0400
commit9f294eb2e0ae0bed8120fc34fd9782f2f0a9ac74 (patch)
treed5005c9888874bd2b169fcd51418a3fab36fe631
parent9ec5a371f5c05fda8ddeac3470be6fc5c67d44e9 (diff)
WIP: C bindings
-rw-r--r--CMakeLists.txt6
-rw-r--r--include/salticidae/event.h6
-rw-r--r--include/salticidae/msg.h19
-rw-r--r--include/salticidae/netaddr.h18
-rw-r--r--include/salticidae/network.h57
-rw-r--r--include/salticidae/stream.h37
-rw-r--r--include/salticidae/type.h6
-rw-r--r--src/config.h.in1
-rw-r--r--src/msg.cpp0
-rw-r--r--src/netaddr.cpp30
-rw-r--r--src/network.cpp52
-rw-r--r--src/stream.cpp69
-rw-r--r--test/test_msgnet_c.c171
13 files changed, 467 insertions, 5 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 903a66f..29ea67d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,10 @@ include_directories(include)
add_library(salticidae
OBJECT
src/util.cpp
- src/conn.cpp)
+ src/conn.cpp
+ src/network.cpp
+ src/stream.cpp
+ src/netaddr.cpp)
option(BUILD_SHARED "build shared library." OFF)
if(BUILD_SHARED)
@@ -59,6 +62,7 @@ option(SALTICIDAE_NORMAL_LOG "enable regular log" ON)
option(SALTICIDAE_MSG_STAT "enable message statistics" ON)
option(SALTICIDAE_NOCHECK "disable the sanity check" OFF)
option(SALTICIDAE_NOCHECKSUM " disable checksum in messages" OFF)
+option(SALTICIDAE_CBINDINGS "enable C bindings" OFF)
configure_file(src/config.h.in include/salticidae/config.h @ONLY)
diff --git a/include/salticidae/event.h b/include/salticidae/event.h
index 946dda1..19bd250 100644
--- a/include/salticidae/event.h
+++ b/include/salticidae/event.h
@@ -35,6 +35,7 @@
#include "salticidae/util.h"
#include "salticidae/ref.h"
+#ifdef __cplusplus
namespace salticidae {
struct _event_context_deleter {
@@ -644,4 +645,9 @@ class ThreadCall {
}
+using eventcontext_t = salticidae::EventContext;
+
+#else
+typedef struct eventcontext_t;
+#endif
#endif
diff --git a/include/salticidae/msg.h b/include/salticidae/msg.h
index 03eb6dd..128e287 100644
--- a/include/salticidae/msg.h
+++ b/include/salticidae/msg.h
@@ -34,6 +34,7 @@
#include "salticidae/stream.h"
#include "salticidae/netaddr.h"
+#ifdef __cplusplus
namespace salticidae {
template<typename OpcodeType>
@@ -69,6 +70,14 @@ class MsgBase {
set_checksum();
}
+#ifdef SALTICIDAE_CBINDINGS
+ MsgBase(const OpcodeType &opcode, bytearray_t &&payload): magic(0x0) {
+ set_opcode(opcode);
+ set_payload(std::move(payload));
+ set_checksum();
+ }
+#endif
+
MsgBase(const MsgBase &other):
magic(other.magic),
opcode(other.opcode),
@@ -258,4 +267,14 @@ const size_t MsgBase<OpcodeType>::header_size =
0;
}
+using msg_t = salticidae::MsgBase<_opcode_t>;
+#else
+typedef struct msg_t msg_t;
+#endif
+
+extern "C" {
+
+void msg_new();
+}
+
#endif
diff --git a/include/salticidae/netaddr.h b/include/salticidae/netaddr.h
index 224d1d4..917c498 100644
--- a/include/salticidae/netaddr.h
+++ b/include/salticidae/netaddr.h
@@ -34,10 +34,10 @@
#include "salticidae/util.h"
#include "salticidae/stream.h"
+#ifdef __cplusplus
namespace salticidae {
/* TODO: IPv6 support */
-
struct NetAddr {
uint32_t ip;
uint16_t port;
@@ -124,4 +124,20 @@ namespace std {
};
}
+using netaddr_t = salticidae::NetAddr;
+#else
+typedef struct netaddr_t netaddr_t;
+#endif
+
+extern "C" {
+
+netaddr_t *netaddr_new();
+netaddr_t *netaddr_new_from_ip_port(uint32_t ip, uint16_t port);
+netaddr_t *netaddr_new_from_sip_port(const char *ip, uint16_t port);
+netaddr_t *netaddr_new_from_sipport(const char *ip_port_addr);
+bool netaddr_is_eq(const netaddr_t *a, const netaddr_t *b);
+bool netaddr_is_null(const netaddr_t *self);
+
+}
+
#endif
diff --git a/include/salticidae/network.h b/include/salticidae/network.h
index f3dd313..12fe720 100644
--- a/include/salticidae/network.h
+++ b/include/salticidae/network.h
@@ -30,8 +30,8 @@
#include "salticidae/msg.h"
#include "salticidae/conn.h"
+#ifdef __cplusplus
namespace salticidae {
-
/** Network of nodes who can send async messages. */
template<typename OpcodeType>
class MsgNetwork: public ConnPool {
@@ -156,6 +156,9 @@ class MsgNetwork: public ConnPool {
{
auto &msg = item.first;
auto &conn = item.second;
+#ifdef SALTICIDAE_CBINDINGS_INJECT_CALLBACK
+ salticidae_injected_msg_callback(&msg, conn.get());
+#else
auto it = handler_map.find(msg.get_opcode());
if (it == handler_map.end())
SALTICIDAE_LOG_WARN("unknown opcode: %s",
@@ -171,6 +174,7 @@ class MsgNetwork: public ConnPool {
#endif
it->second(msg, conn);
}
+#endif
if (++cnt == burst_size) return true;
}
return false;
@@ -182,14 +186,23 @@ class MsgNetwork: public ConnPool {
typename callback_traits<Func>::msg_type, DataStream &&>::value>::type
reg_handler(Func handler) {
using callback_t = callback_traits<Func>;
- handler_map[callback_t::msg_type::opcode] = [handler](const Msg &msg, const conn_t &conn) {
+ set_handler(callback_t::msg_type::opcode,
+ [handler](const Msg &msg, const conn_t &conn) {
handler(typename callback_t::msg_type(msg.get_payload()),
static_pointer_cast<typename callback_t::conn_type>(conn));
- };
+ });
+ }
+
+ template<typename Func>
+ inline void set_handler(OpcodeType opcode, Func handler) {
+ handler_map[opcode] = handler;
}
template<typename MsgType>
bool send_msg(MsgType &&msg, const conn_t &conn);
+#ifdef SALTICIDAE_CBINDINGS
+ inline bool send_msg(const Msg &msg, const conn_t &conn);
+#endif
using ConnPool::listen;
conn_t connect(const NetAddr &addr) {
return static_pointer_cast<Conn>(ConnPool::connect(addr));
@@ -468,6 +481,11 @@ template<typename OpcodeType>
template<typename MsgType>
bool MsgNetwork<OpcodeType>::send_msg(MsgType &&_msg, const conn_t &conn) {
Msg msg(std::forward<MsgType>(_msg));
+ return send_msg(msg, conn);
+}
+
+template<typename OpcodeType>
+inline bool MsgNetwork<OpcodeType>::send_msg(const Msg &msg, const conn_t &conn) {
bytearray_t msg_data = msg.serialize();
SALTICIDAE_LOG_DEBUG("wrote message %s to %s",
std::string(msg).c_str(),
@@ -764,4 +782,37 @@ const O PeerNetwork<O, _, OPCODE_PONG>::MsgPong::opcode = OPCODE_PONG;
}
+using msgnetwork_t = salticidae::MsgNetwork<_opcode_t>;
+using msgnetwork_config_t = msgnetwork_t::Config;
+using msgnetwork_conn_t = msgnetwork_t::conn_t;
+
+#else
+typedef struct msg_t;
+typedef struct msgnetwork_t;
+typedef struct msgnetwork_config_t;
+typedef struct msgnetwork_conn_t;
+#endif
+
+extern "C" {
+
+void salticidae_injected_msg_callback(const msg_t *msg, msgnetwork_conn_t *conn);
+
+msg_t _test_create_msg();
+msgnetwork_t *msgnetwork_new(const eventcontext_t *ec, const msgnetwork_config_t *config);
+
+bool msgnetwork_send_msg(msgnetwork_t *self, const msg_t *msg, const msgnetwork_conn_t *conn);
+
+msgnetwork_conn_t *msgnetwork_connect(msgnetwork_t *self, const netaddr_t *addr);
+
+void msgnetwork_listen(msgnetwork_t *self, const netaddr_t *listen_addr);
+
+typedef void (*msgnetwork_msg_callback_t)(const msg_t *msg, const msgnetwork_conn_t *conn);
+
+#ifdef SALTICIDAE_CBINDINGS_STR_OP
+void msgnetwork_reg_handler(msgnetwork_t *self, const char *opcode, msgnetwork_msg_callback_t cb);
+#else
+void msgnetwork_reg_handler(msgnetwork_t *self, uint8_t opcode, msgnetwork_msg_callback_t cb);
+#endif
+}
+
#endif
diff --git a/include/salticidae/stream.h b/include/salticidae/stream.h
index 5f54195..9eda2bd 100644
--- a/include/salticidae/stream.h
+++ b/include/salticidae/stream.h
@@ -29,6 +29,7 @@
#include "salticidae/ref.h"
#include "salticidae/crypto.h"
+#ifdef __cplusplus
namespace salticidae {
template<size_t N, typename T> class Blob;
@@ -466,4 +467,40 @@ namespace std {
};
}
+using uint256_t = salticidae::uint256_t;
+using datastream_t = salticidae::DataStream;
+
+#else
+typedef struct datastream_t;
+typedef struct uint256_t;
+#endif
+
+extern "C" {
+
+uint256_t *uint256_new();
+uint256_t *uint256_new_from_bytes(const uint8_t *arr);
+bool uint256_is_null(const uint256_t *self);
+bool uint256_is_eq(const uint256_t *a, const uint256_t *b);
+void uint256_serialize(const uint256_t *self, datastream_t *s);
+void uint256_unserialize(uint256_t *self, datastream_t *s);
+
+datastream_t *datastream_new();
+datastream_t *datastream_new_from_bytes(const uint8_t *begin, const uint8_t *end);
+void datastream_assign_by_copy(datastream_t *dst, const datastream_t *src);
+void datastream_assign_by_move(datastream_t *dst, datastream_t *src);
+uint8_t *datastream_data(datastream_t *self);
+void datastream_clear(datastream_t *self);
+size_t datastream_size(const datastream_t *self);
+void datastream_put_u8(datastream_t *self, uint8_t val);
+void datastream_put_u16(datastream_t *self, uint16_t val);
+void datastream_put_u32(datastream_t *self, uint32_t val);
+void datastream_put_i8(datastream_t *self, int8_t val);
+void datastream_put_i16(datastream_t *self, int16_t val);
+void datastream_put_i32(datastream_t *self, int32_t val);
+void datastream_put_data(datastream_t *self,
+ uint8_t *begin, uint8_t *end);
+const uint8_t *datastream_get_data_inplace(datastream_t *self, size_t len);
+uint256_t *datastream_get_hash(const datastream_t *self);
+
+}
#endif
diff --git a/include/salticidae/type.h b/include/salticidae/type.h
index 68deeb0..3ec202a 100644
--- a/include/salticidae/type.h
+++ b/include/salticidae/type.h
@@ -89,4 +89,10 @@ inline auto generic_bind(ReturnType(ClassType::* f)(Args...), FArgs&&... fargs)
}
+#ifdef SALTICIDAE_CBINDINGS_STR_OP
+using _opcode_t = std::string;
+#else
+using _opcode_t = uint8_t;
+#endif
+
#endif
diff --git a/src/config.h.in b/src/config.h.in
index fb39d63..c4ab698 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -6,5 +6,6 @@
#cmakedefine SALTICIDAE_MSG_STAT
#cmakedefine SALTICIDAE_NOCHECK
#cmakedefine SALTICIDAE_NOCHECKSUM
+#cmakedefine SALTICIDAE_CBINDINGS
#endif
diff --git a/src/msg.cpp b/src/msg.cpp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/msg.cpp
diff --git a/src/netaddr.cpp b/src/netaddr.cpp
new file mode 100644
index 0000000..a3a54bf
--- /dev/null
+++ b/src/netaddr.cpp
@@ -0,0 +1,30 @@
+#include "salticidae/netaddr.h"
+
+using namespace salticidae;
+
+#ifdef __cplusplus
+
+extern "C" {
+
+netaddr_t *netaddr_new() { return new NetAddr(); }
+netaddr_t *netaddr_new_from_ip_port(uint32_t ip, uint16_t port) {
+ return new NetAddr(ip, port);
+}
+
+netaddr_t *netaddr_new_from_sip_port(const char *ip, uint16_t port) {
+ return new NetAddr(ip, port);
+}
+
+netaddr_t *netaddr_new_from_sipport(const char *ip_port_addr) {
+ return new NetAddr(ip_port_addr);
+}
+
+bool netaddr_is_eq(const netaddr_t *a, const netaddr_t *b) {
+ return *a == *b;
+}
+
+bool netaddr_is_null(const netaddr_t *self) { return self->is_null(); }
+
+}
+
+#endif
diff --git a/src/network.cpp b/src/network.cpp
new file mode 100644
index 0000000..cefe723
--- /dev/null
+++ b/src/network.cpp
@@ -0,0 +1,52 @@
+#include "salticidae/network.h"
+#ifdef SALTICIDAE_CBINDINGS
+
+using namespace salticidae;
+
+extern "C" {
+
+msg_t _test_create_msg() {
+ return msg_t(0x0, bytearray_t());
+}
+
+
+msgnetwork_t *msgnetwork_new(const EventContext *ec, const msgnetwork_config_t *config) {
+ return new msgnetwork_t(*ec, *config);
+}
+
+bool msgnetwork_send_msg(msgnetwork_t *self,
+ const msg_t *msg, const msgnetwork_conn_t *conn) {
+ return self->send_msg(*msg, *conn);
+}
+
+msgnetwork_conn_t *msgnetwork_connect(msgnetwork_t *self, const netaddr_t *addr) {
+ return new msgnetwork_t::conn_t(self->connect(*addr));
+}
+
+void msgnetwork_listen(msgnetwork_t *self, const netaddr_t *listen_addr) {
+ self->listen(*listen_addr);
+}
+
+#ifdef SALTICIDAE_CBINDINGS_STR_OP
+void msgnetwork_reg_handler(msgnetwork_t *self,
+ const char *opcode,
+ msgnetwork_msg_callback_t cb) {
+ self->set_handler(std::string(opcode),
+ [cb](const msgnetwork_t::Msg &msg, const msgnetwork_t::conn_t &conn) {
+ cb(&msg, &conn);
+ });
+}
+#else
+void msgnetwork_reg_handler(msgnetwork_t *self,
+ uint8_t opcode,
+ msgnetwork_msg_callback_t cb) {
+ self->set_handler(opcode,
+ [cb](const msgnetwork_t::Msg &msg, const msgnetwork_t::conn_t &conn) {
+ cb(&msg, &conn);
+ });
+}
+#endif
+
+}
+
+#endif
diff --git a/src/stream.cpp b/src/stream.cpp
new file mode 100644
index 0000000..8846414
--- /dev/null
+++ b/src/stream.cpp
@@ -0,0 +1,69 @@
+#include "salticidae/stream.h"
+
+using namespace salticidae;
+
+#ifdef __cplusplus
+
+extern "C" {
+
+uint256_t *uint256_new() { return new uint256_t(); }
+uint256_t *uint256_new_from_bytes(const uint8_t *arr) {
+ return new uint256_t(arr);
+}
+
+bool uint256_is_null(const uint256_t *self) { return self->is_null(); }
+bool uint256_is_eq(const uint256_t *a, const uint256_t *b) {
+ return *a == *b;
+}
+
+void uint256_serialize(const uint256_t *self, datastream_t *s) {
+ self->serialize(*s);
+}
+
+void uint256_unserialize(uint256_t *self, datastream_t *s) {
+ self->unserialize(*s);
+}
+
+datastream_t *datastream_new() { return new DataStream(); }
+datastream_t *datastream_new_from_bytes(const uint8_t *begin, const uint8_t *end) {
+ return new DataStream(begin, end);
+}
+
+void datastream_assign_by_copy(datastream_t *dst, const datastream_t *src) {
+ *dst = *src;
+}
+
+void datastream_assign_by_move(datastream_t *dst, datastream_t *src) {
+ *dst = std::move(*src);
+}
+
+uint8_t *datastream_data(datastream_t *self) { return self->data(); }
+
+void datastream_clear(datastream_t *self) { self->clear(); }
+
+size_t datastream_size(const datastream_t *self) { return self->size(); }
+
+void datastream_put_u8(datastream_t *self, uint8_t val) { *self << val; }
+void datastream_put_u16(datastream_t *self, uint16_t val) { *self << val; }
+void datastream_put_u32(datastream_t *self, uint32_t val) { *self << val; }
+
+void datastream_put_i8(datastream_t *self, int8_t val) { *self << val; }
+void datastream_put_i16(datastream_t *self, int16_t val) { *self << val; }
+void datastream_put_i32(datastream_t *self, int32_t val) { *self << val; }
+
+void datastream_put_data(datastream_t *self,
+ uint8_t *begin, uint8_t *end) {
+ self->put_data(begin, end);
+}
+
+const uint8_t *datastream_get_data_inplace(datastream_t *self, size_t len) {
+ return self->get_data_inplace(len);
+}
+
+uint256_t *datastream_get_hash(const datastream_t *self) {
+ return new uint256_t(self->get_hash());
+}
+
+}
+
+#endif
diff --git a/test/test_msgnet_c.c b/test/test_msgnet_c.c
new file mode 100644
index 0000000..1098e19
--- /dev/null
+++ b/test/test_msgnet_c.c
@@ -0,0 +1,171 @@
+/**
+ * Copyright (c) 2018 Cornell University.
+ *
+ * Author: Ted Yin <tederminant@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "salticidae/event.h"
+#include "salticidae/network.h"
+#include "salticidae/stream.h"
+
+/** Hello Message. */
+const uint8_t msg_hello_opcode = 0x0;
+typedef struct MsgHello {
+ const char *name;
+ const char *text;
+} MsgHello;
+/** Defines how to serialize the msg. */
+datastream_t msg_hello_serialize(const char *name, const char *text) {
+ datastream_t *serialized = msgnet_
+ serialized << htole((uint32_t)name.length());
+ serialized << name << text;
+}
+
+/** Defines how to parse the msg. */
+MsgHello MsgHello(DataStream &&s) {
+ MsgHello res;
+ uint32_t len;
+ s >> len;
+ len = letoh(len);
+ res.name = std::string((const char *)s.get_data_inplace(len), len);
+ len = s.size();
+ res.text = std::string((const char *)s.get_data_inplace(len), len);
+ return res;
+}
+
+/** Acknowledgement Message. */
+struct MsgAck {
+ static const uint8_t opcode = 0x1;
+ DataStream serialized;
+ MsgAck() {}
+ MsgAck(DataStream &&s) {}
+};
+
+const uint8_t MsgHello::opcode;
+const uint8_t MsgAck::opcode;
+
+using MsgNetworkByteOp = MsgNetwork<uint8_t>;
+
+typedef struct MyNet {
+ msgnetwork_t *net;
+ const std::string name;
+ const NetAddr peer;
+} MyNet;
+
+void msg_hello_handler(const msg_t *msg, const msgnetwork_conn_t *conn) {
+
+}
+
+void msg_ack_handler(const msg_t *msg, const msgnetwork_conn_t *conn) {
+}
+
+void alice_conn_handler(const msgnetwork_conn_t *conn, bool connected) {
+ if (connected)
+ {
+ if (conn->get_mode() == ConnPool::Conn::ACTIVE)
+ {
+ puts("[alice] Connected, sending hello.");
+ /* send the first message through this connection */
+ msgnetwork_send_msg(alice,
+ msg_hello_serialize("alice", "Hello there!"), conn);
+ }
+ else
+ printf("[alice] Accepted, waiting for greetings.\n",
+ this->name.c_str());
+ }
+ else
+ {
+ printf("[alice] Disconnected, retrying.\n", this->name.c_str());
+ /* try to reconnect to the same address */
+ connect(conn->get_addr());
+ }
+}
+
+MyNet mynet_new(const salticidae::EventContext &ec,
+ const char *name,
+ const netaddr_t *peer) {
+ MyNet res;
+ const msgnetwork_config_t *netconfig = msgnetwork_config_new();
+ res.net = msgnetwork_new(ec, netconfig);
+ res.name = name;
+ res.peer = peer;
+
+ /* message handler could be a bound method */
+ reg_handler(salticidae::generic_bind(&MyNet::on_receive_hello, this, _1, _2));
+
+ reg_conn_handler([this](const ConnPool::conn_t &conn, bool connected) {
+ });
+ }
+
+ void on_receive_hello(MsgHello &&msg, const MyNet::conn_t &conn) {
+ printf("[%s] %s says %s\n",
+ name.c_str(),
+ msg.name.c_str(), msg.text.c_str());
+ /* send acknowledgement */
+ send_msg(MsgAck(), conn);
+ }
+};
+
+
+void on_receive_ack(MsgAck &&msg, const MyNet::conn_t &conn) {
+ auto net = static_cast<MyNet *>(conn->get_net());
+ printf("[%s] the peer knows\n", net->name.c_str());
+}
+
+int main() {
+ salticidae::EventContext ec;
+ NetAddr alice_addr("127.0.0.1:12345");
+ NetAddr bob_addr("127.0.0.1:12346");
+
+ /* test two nodes in the same main loop */
+ MyNet alice(ec, "Alice", bob_addr);
+ MyNet bob(ec, "Bob", alice_addr);
+
+ /* message handler could be a normal function */
+ alice.reg_handler(on_receive_ack);
+ bob.reg_handler(on_receive_ack);
+
+ /* start all threads */
+ alice.start();
+ bob.start();
+
+ /* accept incoming connections */
+ alice.listen(alice_addr);
+ bob.listen(bob_addr);
+
+ /* try to connect once */
+ alice.connect(bob_addr);
+ bob.connect(alice_addr);
+
+ /* the main loop can be shutdown by ctrl-c or kill */
+ auto shutdown = [&](int) {ec.stop();};
+ salticidae::SigEvent ev_sigint(ec, shutdown);
+ salticidae::SigEvent ev_sigterm(ec, shutdown);
+ ev_sigint.add(SIGINT);
+ ev_sigterm.add(SIGTERM);
+
+ /* enter the main loop */
+ ec.dispatch();
+ return 0;
+}