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-rw-r--r--src/wire/packets.cpp106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/wire/packets.cpp b/src/wire/packets.cpp
new file mode 100644
index 0000000..3cba856
--- /dev/null
+++ b/src/wire/packets.cpp
@@ -0,0 +1,106 @@
+#include "packets.hpp"
+// packets.cpp - palatable socket buffer accessors
+//
+// Copyright © 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 "../io/cxxstdio.hpp"
+#include "../io/write.hpp"
+
+#include "../poison.hpp"
+
+
+namespace tmwa
+{
+size_t packet_avail(Session *s)
+{
+ return s->rdata_size - s->rdata_pos;
+}
+
+bool packet_fetch(Session *s, size_t offset, Byte *data, size_t sz)
+{
+ if (packet_avail(s) < offset + sz)
+ return false;
+ const Byte *start = reinterpret_cast<const Byte *>(&s->rdata[s->rdata_pos + offset]);
+ const Byte *end = start + sz;
+ std::copy(start, end, data);
+ return true;
+}
+void packet_discard(Session *s, size_t sz)
+{
+ s->rdata_pos += sz;
+
+ assert (s->rdata_size >= s->rdata_pos);
+}
+bool packet_send(Session *s, const Byte *data, size_t sz)
+{
+ if (s->wdata_size + sz > s->max_wdata)
+ {
+ realloc_fifo(s, s->max_rdata, s->max_wdata << 1);
+ PRINTF("socket: %d wdata expanded to %zu bytes.\n"_fmt, s, s->max_wdata);
+ }
+ if (!s->max_wdata || !s->wdata)
+ {
+ return false;
+ }
+ s->wdata_size += sz;
+
+ Byte *end = reinterpret_cast<Byte *>(&s->wdata[s->wdata_size + 0]);
+ Byte *start = end - sz;
+ std::copy(data, data + sz, start);
+ return true;
+}
+
+void packet_dump(io::WriteFile& logfp, Session *s)
+{
+ FPRINTF(logfp,
+ "---- 00-01-02-03-04-05-06-07 08-09-0A-0B-0C-0D-0E-0F\n"_fmt);
+ char tmpstr[16 + 1] {};
+ int i;
+ for (i = 0; i < packet_avail(s); i++)
+ {
+ if ((i & 15) == 0)
+ FPRINTF(logfp, "%04X "_fmt, i);
+ Byte rfifob_ib;
+ packet_fetch(s, i, &rfifob_ib, 1);
+ uint8_t rfifob_i = rfifob_ib.value;
+ FPRINTF(logfp, "%02x "_fmt, rfifob_i);
+ if (rfifob_i > 0x1f)
+ tmpstr[i % 16] = rfifob_i;
+ else
+ tmpstr[i % 16] = '.';
+ if ((i - 7) % 16 == 0) // -8 + 1
+ FPRINTF(logfp, " "_fmt);
+ else if ((i + 1) % 16 == 0)
+ {
+ FPRINTF(logfp, " %s\n"_fmt, tmpstr);
+ std::fill(tmpstr + 0, tmpstr + 17, '\0');
+ }
+ }
+ if (i % 16 != 0)
+ {
+ for (int j = i; j % 16 != 0; j++)
+ {
+ FPRINTF(logfp, " "_fmt);
+ if ((j - 7) % 16 == 0) // -8 + 1
+ FPRINTF(logfp, " "_fmt);
+ }
+ FPRINTF(logfp, " %s\n"_fmt, tmpstr);
+ }
+ FPRINTF(logfp, "\n"_fmt);
+}
+} // namespace tmwa