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Diffstat (limited to 'src/net/vomit.hpp')
-rw-r--r-- | src/net/vomit.hpp | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/net/vomit.hpp b/src/net/vomit.hpp new file mode 100644 index 0000000..3d3a07f --- /dev/null +++ b/src/net/vomit.hpp @@ -0,0 +1,264 @@ +#ifndef TMWA_NET_VOMIT_HPP +#define TMWA_NET_VOMIT_HPP +// vomit.hpp - sickening socket accessors +// +// Copyright © ????-2004 Athena Dev Teams +// Copyright © 2004-2011 The Mana World Development Team +// Copyright © 2011-2014 Ben Longbons <b.r.longbons@gmail.com> +// +// This file is part of The Mana World (Athena server) +// +// 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, see <http://www.gnu.org/licenses/>. + +# include "fwd.hpp" + +# include "socket.hpp" + +template<class T> +uint8_t *pod_addressof_m(T& structure) +{ + static_assert(is_trivially_copyable<T>::value, "Can only byte-copy POD-ish structs"); + return &reinterpret_cast<uint8_t&>(structure); +} + +template<class T> +const uint8_t *pod_addressof_c(const T& structure) +{ + static_assert(is_trivially_copyable<T>::value, "Can only byte-copy POD-ish structs"); + return &reinterpret_cast<const uint8_t&>(structure); +} + +/// Read from the queue +inline +const void *RFIFOP(Session *s, size_t pos) +{ + return &s->rdata[s->rdata_pos + pos]; +} +inline +uint8_t RFIFOB(Session *s, size_t pos) +{ + return *static_cast<const uint8_t *>(RFIFOP(s, pos)); +} +inline +uint16_t RFIFOW(Session *s, size_t pos) +{ + return *static_cast<const uint16_t *>(RFIFOP(s, pos)); +} +inline +uint32_t RFIFOL(Session *s, size_t pos) +{ + return *static_cast<const uint32_t *>(RFIFOP(s, pos)); +} +template<class T> +void RFIFO_STRUCT(Session *s, size_t pos, T& structure) +{ + really_memcpy(pod_addressof_m(structure), static_cast<const uint8_t *>(RFIFOP(s, pos)), sizeof(T)); +} +inline +IP4Address RFIFOIP(Session *s, size_t pos) +{ + IP4Address o; + RFIFO_STRUCT(s, pos, o); + return o; +} +template<uint8_t len> +inline +VString<len-1> RFIFO_STRING(Session *s, size_t pos) +{ + const char *const begin = static_cast<const char *>(RFIFOP(s, pos)); + const char *const end = begin + len-1; + const char *const mid = std::find(begin, end, '\0'); + return XString(begin, mid, nullptr); +} +inline +AString RFIFO_STRING(Session *s, size_t pos, size_t len) +{ + const char *const begin = static_cast<const char *>(RFIFOP(s, pos)); + const char *const end = begin + len; + const char *const mid = std::find(begin, end, '\0'); + return XString(begin, mid, nullptr); +} +inline +void RFIFO_BUF_CLONE(Session *s, uint8_t *buf, size_t len) +{ + really_memcpy(buf, static_cast<const uint8_t *>(RFIFOP(s, 0)), len); +} + +/// Read from an arbitrary buffer +inline +const void *RBUFP(const uint8_t *p, size_t pos) +{ + return p + pos; +} +inline +uint8_t RBUFB(const uint8_t *p, size_t pos) +{ + return *static_cast<const uint8_t *>(RBUFP(p, pos)); +} +inline +uint16_t RBUFW(const uint8_t *p, size_t pos) +{ + return *static_cast<const uint16_t *>(RBUFP(p, pos)); +} +inline +uint32_t RBUFL(const uint8_t *p, size_t pos) +{ + return *static_cast<const uint32_t *>(RBUFP(p, pos)); +} +template<class T> +void RBUF_STRUCT(const uint8_t *p, size_t pos, T& structure) +{ + really_memcpy(pod_addressof_m(structure), p + pos, sizeof(T)); +} +inline +IP4Address RBUFIP(const uint8_t *p, size_t pos) +{ + IP4Address o; + RBUF_STRUCT(p, pos, o); + return o; +} +template<uint8_t len> +inline +VString<len-1> RBUF_STRING(const uint8_t *p, size_t pos) +{ + const char *const begin = static_cast<const char *>(RBUFP(p, pos)); + const char *const end = begin + len-1; + const char *const mid = std::find(begin, end, '\0'); + return XString(begin, mid, nullptr); +} +inline +AString RBUF_STRING(const uint8_t *p, size_t pos, size_t len) +{ + const char *const begin = static_cast<const char *>(RBUFP(p, pos)); + const char *const end = begin + len; + const char *const mid = std::find(begin, end, '\0'); + return XString(begin, mid, nullptr); +} + + +/// Unused - check how much data can be written +// the existence of this seems scary +inline +size_t WFIFOSPACE(Session *s) +{ + return s->max_wdata - s->wdata_size; +} +/// Write to the queue +inline +void *WFIFOP(Session *s, size_t pos) +{ + return &s->wdata[s->wdata_size + pos]; +} +inline +uint8_t& WFIFOB(Session *s, size_t pos) +{ + return *static_cast<uint8_t *>(WFIFOP(s, pos)); +} +inline +uint16_t& WFIFOW(Session *s, size_t pos) +{ + return *static_cast<uint16_t *>(WFIFOP(s, pos)); +} +inline +uint32_t& WFIFOL(Session *s, size_t pos) +{ + return *static_cast<uint32_t *>(WFIFOP(s, pos)); +} +template<class T> +void WFIFO_STRUCT(Session *s, size_t pos, T& structure) +{ + really_memcpy(static_cast<uint8_t *>(WFIFOP(s, pos)), pod_addressof_c(structure), sizeof(T)); +} +inline +IP4Address& WFIFOIP(Session *s, size_t pos) +{ + static_assert(is_trivially_copyable<IP4Address>::value, "That was the whole point"); + return *static_cast<IP4Address *>(WFIFOP(s, pos)); +} +inline +void WFIFO_STRING(Session *s, size_t pos, XString str, size_t len) +{ + char *const begin = static_cast<char *>(WFIFOP(s, pos)); + char *const end = begin + len; + char *const mid = std::copy(str.begin(), str.end(), begin); + std::fill(mid, end, '\0'); +} +inline +void WFIFO_ZERO(Session *s, size_t pos, size_t len) +{ + uint8_t *b = static_cast<uint8_t *>(WFIFOP(s, pos)); + uint8_t *e = b + len; + std::fill(b, e, '\0'); +} +inline +void WFIFO_BUF_CLONE(Session *s, const uint8_t *buf, size_t len) +{ + really_memcpy(static_cast<uint8_t *>(WFIFOP(s, 0)), buf, len); +} + +/// Write to an arbitrary buffer +inline +void *WBUFP(uint8_t *p, size_t pos) +{ + return p + pos; +} +inline +uint8_t& WBUFB(uint8_t *p, size_t pos) +{ + return *static_cast<uint8_t *>(WBUFP(p, pos)); +} +inline +uint16_t& WBUFW(uint8_t *p, size_t pos) +{ + return *static_cast<uint16_t *>(WBUFP(p, pos)); +} +inline +uint32_t& WBUFL(uint8_t *p, size_t pos) +{ + return *static_cast<uint32_t *>(WBUFP(p, pos)); +} +template<class T> +void WBUF_STRUCT(uint8_t *p, size_t pos, T& structure) +{ + really_memcpy(p + pos, pod_addressof_c(structure), sizeof(T)); +} +inline +IP4Address& WBUFIP(uint8_t *p, size_t pos) +{ + return *static_cast<IP4Address *>(WBUFP(p, pos)); +} +inline +void WBUF_STRING(uint8_t *p, size_t pos, XString s, size_t len) +{ + char *const begin = static_cast<char *>(WBUFP(p, pos)); + char *const end = begin + len; + char *const mid = std::copy(s.begin(), s.end(), begin); + std::fill(mid, end, '\0'); +} +inline +void WBUF_ZERO(uint8_t *p, size_t pos, size_t len) +{ + uint8_t *b = static_cast<uint8_t *>(WBUFP(p, pos)); + uint8_t *e = b + len; + std::fill(b, e, '\0'); +} + +inline +void RFIFO_WFIFO_CLONE(Session *rs, Session *ws, size_t len) +{ + really_memcpy(static_cast<uint8_t *>(WFIFOP(ws, 0)), + static_cast<const uint8_t *>(RFIFOP(rs, 0)), len); +} + +#endif // TMWA_NET_VOMIT_HPP |