add initial project structure
Change-Id: I6a3fb080ff623b312e42d71754480a7ce00b81a0
diff --git a/src/sip_utils.h b/src/sip_utils.h
new file mode 100644
index 0000000..6460b70
--- /dev/null
+++ b/src/sip_utils.h
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2004-2023 Savoir-faire Linux Inc.
+ *
+ * Author: Tristan Matthews <tristan.matthews@savoirfairelinux.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include "ip_utils.h"
+
+#include <utility>
+#include <string>
+#include <vector>
+#include <cstring> // strcmp
+
+#include <pjsip/sip_msg.h>
+#include <pjlib.h>
+#include <pj/pool.h>
+#include <pjsip/sip_endpoint.h>
+#include <pjsip/sip_dialog.h>
+
+namespace jami {
+namespace sip_utils {
+
+using namespace std::literals;
+
+// SIP methods. Only list methods that need to be explicitly
+// handled
+
+namespace SIP_METHODS {
+constexpr std::string_view MESSAGE = "MESSAGE"sv;
+constexpr std::string_view INFO = "INFO"sv;
+constexpr std::string_view OPTIONS = "OPTIONS"sv;
+constexpr std::string_view PUBLISH = "PUBLISH"sv;
+constexpr std::string_view REFER = "REFER"sv;
+constexpr std::string_view NOTIFY = "NOTIFY"sv;
+} // namespace SIP_METHODS
+
+static constexpr int DEFAULT_SIP_PORT {5060};
+static constexpr int DEFAULT_SIP_TLS_PORT {5061};
+static constexpr int DEFAULT_AUTO_SELECT_PORT {0};
+
+/// PjsipErrorCategory - a PJSIP error category for std::error_code
+class PjsipErrorCategory final : public std::error_category
+{
+public:
+ const char* name() const noexcept override { return "pjsip"; }
+ std::string message(int condition) const override;
+};
+
+/// PJSIP related exception
+/// Based on std::system_error with code() returning std::error_code with PjsipErrorCategory category
+class PjsipFailure : public std::system_error
+{
+private:
+ static constexpr const char* what_ = "PJSIP call failed";
+
+public:
+ PjsipFailure()
+ : std::system_error(std::error_code(PJ_EUNKNOWN, PjsipErrorCategory()), what_)
+ {}
+
+ explicit PjsipFailure(pj_status_t status)
+ : std::system_error(std::error_code(status, PjsipErrorCategory()), what_)
+ {}
+};
+
+
+/**
+ * Helper function to parser header from incoming sip messages
+ * @return Header from SIP message
+ */
+/*std::string fetchHeaderValue(pjsip_msg* msg, const std::string& field);
+
+pjsip_route_hdr* createRouteSet(const std::string& route, pj_pool_t* hdr_pool);
+
+std::string_view stripSipUriPrefix(std::string_view sipUri);
+
+std::string parseDisplayName(const pjsip_name_addr* sip_name_addr);
+std::string parseDisplayName(const pjsip_from_hdr* header);
+std::string parseDisplayName(const pjsip_contact_hdr* header);
+
+std::string_view getHostFromUri(std::string_view sipUri);
+
+void addContactHeader(const std::string& contact, pjsip_tx_data* tdata);
+void addUserAgentHeader(const std::string& userAgent, pjsip_tx_data* tdata);
+std::string_view getPeerUserAgent(const pjsip_rx_data* rdata);
+std::vector<std::string> getPeerAllowMethods(const pjsip_rx_data* rdata);
+void logMessageHeaders(const pjsip_hdr* hdr_list);*/
+
+std::string_view sip_strerror(pj_status_t code);
+
+// Helper function that return a constant pj_str_t from an array of any types
+// that may be statically casted into char pointer.
+// Per convention, the input array is supposed to be null terminated.
+template<typename T, std::size_t N>
+constexpr const pj_str_t
+CONST_PJ_STR(T (&a)[N]) noexcept
+{
+ return {const_cast<char*>(a), N - 1};
+}
+
+inline const pj_str_t
+CONST_PJ_STR(const std::string& str) noexcept
+{
+ return {const_cast<char*>(str.c_str()), (pj_ssize_t) str.size()};
+}
+
+inline constexpr pj_str_t
+CONST_PJ_STR(const std::string_view& str) noexcept
+{
+ return {const_cast<char*>(str.data()), (pj_ssize_t) str.size()};
+}
+
+inline constexpr std::string_view
+as_view(const pj_str_t& str) noexcept
+{
+ return {str.ptr, (size_t) str.slen};
+}
+
+// PJSIP dialog locking in RAII way
+// Usage: declare local variable like this: sip_utils::PJDialogLock lock {dialog};
+// The lock is kept until the local variable is deleted
+class PJDialogLock
+{
+public:
+ explicit PJDialogLock(pjsip_dialog* dialog)
+ : dialog_(dialog)
+ {
+ pjsip_dlg_inc_lock(dialog_);
+ }
+
+ ~PJDialogLock() { pjsip_dlg_dec_lock(dialog_); }
+
+private:
+ PJDialogLock(const PJDialogLock&) = delete;
+ PJDialogLock& operator=(const PJDialogLock&) = delete;
+ pjsip_dialog* dialog_ {nullptr};
+};
+
+// Helper on PJSIP memory pool allocation from endpoint
+// This encapsulate the allocated memory pool inside a unique_ptr
+static inline std::unique_ptr<pj_pool_t, decltype(pj_pool_release)&>
+smart_alloc_pool(pjsip_endpoint* endpt, const char* const name, pj_size_t initial, pj_size_t inc)
+{
+ auto pool = pjsip_endpt_create_pool(endpt, name, initial, inc);
+ if (not pool)
+ throw std::bad_alloc();
+ return std::unique_ptr<pj_pool_t, decltype(pj_pool_release)&>(pool, pj_pool_release);
+}
+
+void sockaddr_to_host_port(pj_pool_t* pool, pjsip_host_port* host_port, const pj_sockaddr* addr);
+
+static constexpr int POOL_TP_INIT {512};
+static constexpr int POOL_TP_INC {512};
+static constexpr int TRANSPORT_INFO_LENGTH {64};
+
+} // namespace sip_utils
+} // namespace jami