Add fuzzer for the terminal

This commit adds a fuzzer for more of the terminal pipeline, adding
coverage for the input and output portions of the terminal
framebuffer.

src/fuzz/Makefile.am

@@ -1,7 +1,11 @@
 AM_CXXFLAGS = $(WARNING_CXXFLAGS) $(PICKY_CXXFLAGS) $(HARDEN_CFLAGS) $(MISC_CXXFLAGS) $(CODE_COVERAGE_CXXFLAGS) $(FUZZING_CFLAGS)
 
-noinst_PROGRAMS = terminal_parser_fuzzer
+noinst_PROGRAMS = terminal_parser_fuzzer terminal_fuzzer
 
 terminal_parser_fuzzer_CPPFLAGS = -I$(srcdir)/../terminal -I$(srcdir)/../util
 terminal_parser_fuzzer_LDADD = ../terminal/libmoshterminal.a ../util/libmoshutil.a
 terminal_parser_fuzzer_SOURCES = terminal_parser_fuzzer.cc
+
+terminal_fuzzer_CPPFLAGS = -I$(srcdir)/../terminal -I$(srcdir)/../util -I$(srcdir)/../statesync -I../protobufs
+terminal_fuzzer_LDADD = ../terminal/libmoshterminal.a ../util/libmoshutil.a ../statesync/libmoshstatesync.a ../protobufs/libmoshprotos.a $(TINFO_LIBS) $(protobuf_LIBS)
+terminal_fuzzer_SOURCES = terminal_fuzzer.cc

src/fuzz/terminal_corpus/3a52ce780950d4d969792a2559cd519d7ee8c727

@@ -0,0 +1 @@
+.

src/fuzz/terminal_corpus/433f367f36f48f78570c2013fef7a4f4b52b7c0c

@@ -0,0 +1 @@
+&�����:#

src/fuzz/terminal_corpus/7c4d33785daa5c2370201ffa236b427aa37c9996

@@ -0,0 +1 @@
+&

src/fuzz/terminal_corpus/9a78211436f6d425ec38f5c4e02270801f3524f8

@@ -0,0 +1 @@
+@

src/fuzz/terminal_corpus/a70a7fcfa8e88039504b6a798314285419f51e16

@@ -0,0 +1,3 @@
+
+
+@

src/fuzz/terminal_corpus/adc83b19e793491b1c6ea0fd8b46cd9f32e592fc

@@ -0,0 +1 @@
+

src/fuzz/terminal_corpus/e0d3c08cb28736844512c52dc05fa4e4efd91490

@@ -0,0 +1,2 @@
+
+@

src/fuzz/terminal_corpus/f195c020a28dfc5f2fb6af256b524ddcd93756ed

@@ -0,0 +1 @@
+�

src/fuzz/terminal_fuzzer.cc

@@ -0,0 +1,17 @@
+#include <cstddef>
+#include <cstdint>
+
+#include "parser.h"
+#include "completeterminal.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  Terminal::Display display(false);
+  Terminal::Complete complete(80, 24);
+  Terminal::Framebuffer state(80, 24);
+  for (size_t i = 0; i < size; i++) {
+    complete.act(Parser::UserByte(data[i]));
+  }
+  display.new_frame(true, state, complete.get_fb());
+  
+  return 0;
+}