initial version of rpc server

config/extra/with-rpcserver.mk

@@ -0,0 +1 @@
+FD_WITH_RPCSERVER:=1

src/app/rpcserver/Local.mk

@@ -0,0 +1,10 @@
+ifdef FD_WITH_RPCSERVER
+
+LDFLAGS+=-Wl,--push-state,-Bstatic -lmicrohttpd -Wl,--pop-state -lgmp -lcrypto
+
+$(call make-bin,fd_rpcserver,main fd_block_to_json fd_methods fd_rpc_service fd_webserver json_lex keywords,fd_flamenco fd_ballet fd_reedsol fd_disco fd_funk fd_shred fd_tango fd_choreo fd_waltz fd_util, $(SECP256K1_LIBS))
+
+$(call make-unit-test,test_rpc_keywords,test_keywords keywords,fd_util)
+$(call fuzz-test,fuzz_json_lex,fuzz_json_lex,fd_util)
+
+endif

src/app/rpcserver/deps.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Install prefix
+cd ../../..
+PREFIX="$(pwd)/opt"
+
+checkout_gnuweb () {
+  # Skip if dir already exists
+  if [[ -d ./opt/gnuweb/"$1" ]]; then
+    echo "[~] Skipping $1 fetch as \"$(pwd)/opt/gnuweb/$1\" already exists"
+  else
+    echo "[+] Cloning $1 from $2/$3.tar.gz"
+    curl -o - -L "$2/$3.tar.gz" | gunzip | tar xf - -C ./opt/gnuweb
+    mv ./opt/gnuweb/$3 ./opt/gnuweb/$1
+    echo
+  fi
+}
+
+fetch () {
+  mkdir -pv ./opt/gnuweb
+  checkout_gnuweb libmicrohttpd https://ftp.gnu.org/gnu/libmicrohttpd/ "libmicrohttpd-0.9.77"
+}
+
+install_libmicrohttpd () {
+  cd ./opt/gnuweb/libmicrohttpd/
+  ./configure \
+    --prefix="$PREFIX" \
+    --disable-https \
+    --disable-curl  \
+    --disable-dauth \
+    --with-pic
+  make -j
+  make install
+
+  echo "[+] Successfully installed libmicrohttpd"
+}
+
+install () {
+  CC="$(command -v gcc)"
+  cc="$CC"
+  export CC
+  export cc
+
+  ( install_libmicrohttpd )
+
+  echo "[~] Done!"
+}
+
+ACTION=0
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    fetch)
+      shift
+      fetch
+      ACTION=1
+      ;;
+    install)
+      shift
+      install
+      ACTION=1
+      ;;
+    *)
+      echo "Unknown command: $1" >&2
+      exit 1
+      ;;
+  esac
+done
+
+if [[ $ACTION == 0 ]]; then
+  fetch
+  install
+fi

src/app/rpcserver/fd_block_to_json.h

@@ -0,0 +1,38 @@
+typedef enum {
+  FD_ENC_BASE58, FD_ENC_BASE64, FD_ENC_BASE64_ZSTD, FD_ENC_JSON, FD_ENC_JSON_PARSED
+} fd_rpc_encoding_t;
+
+enum fd_block_detail { FD_BLOCK_DETAIL_FULL, FD_BLOCK_DETAIL_ACCTS, FD_BLOCK_DETAIL_SIGS, FD_BLOCK_DETAIL_NONE };
+
+int fd_txn_meta_to_json( fd_textstream_t * ts,
+                         const void * meta_raw,
+                         ulong meta_raw_sz );
+
+int fd_txn_to_json( fd_textstream_t * ts,
+                    fd_txn_t* txn,
+                    const uchar* raw,
+                    fd_rpc_encoding_t encoding,
+                    long maxvers,
+                    enum fd_block_detail detail,
+                    int rewards );
+
+int fd_block_to_json( fd_textstream_t * ts,
+                      long call_id,
+                      fd_block_t * blk,
+                      const uchar * blk_data,
+                      ulong blk_sz,
+                      fd_slot_meta_t * meta,
+                      fd_rpc_encoding_t encoding,
+                      long maxvers,
+                      enum fd_block_detail detail,
+                      int rewards);
+
+#define FD_LONG_UNSET (1L << 63L)
+
+const char* fd_account_to_json( fd_textstream_t * ts,
+                                fd_pubkey_t acct,
+                                fd_rpc_encoding_t enc,
+                                uchar const * val,
+                                ulong val_sz,
+                                long off,
+                                long len );