Embed sapling params

Cargo.toml

@@ -38,7 +38,7 @@ webpki-roots = "0.16.0"
 tower-h2 = { git = "https://github.com/tower-rs/tower-h2" }
 openssl = "*"
 openssl-probe = "*"
-
+rust-embed = "5.1.0"
 
 [dependencies.bellman]
 git = "https://github.com/adityapk00/librustzcash.git"
@@ -72,4 +72,4 @@ tower-grpc-build = { git = "https://github.com/tower-rs/tower-grpc",  features =
 rand_core = "0.5.1"
 
 [profile.release]
-debug = true
+debug = false

src/lightclient.rs

@@ -37,6 +37,7 @@ use zcash_client_backend::{
 use crate::grpc_client::{ChainSpec, BlockId, BlockRange, RawTransaction, 
                          TransparentAddressBlockFilter, TxFilter, Empty, LightdInfo};
 use crate::grpc_client::client::CompactTxStreamer;
+use crate::SaplingParams;
 
 // Used below to return the grpc "Client" type to calling methods
 
@@ -142,8 +143,6 @@ macro_rules! make_grpc_client {
     }};
 }
 
-
-
 #[derive(Clone, Debug)]
 pub struct LightClientConfig {
     pub server                      : http::Uri,
@@ -153,22 +152,6 @@ pub struct LightClientConfig {
 }
 
 impl LightClientConfig {
-    pub fn get_params_path(&self, name: &str) -> Box<Path> {
-        let mut params_location;
-
-        if cfg!(target_os="macos") || cfg!(target_os="windows") {
-            params_location  = dirs::data_dir()
-                .expect("Couldn't determine app data directory!");
-            params_location.push("ZcashParams");
-        } else {
-            params_location  = dirs::home_dir()
-                .expect("Couldn't determine home directory!");
-            params_location.push(".zcash-params");
-        };
-
-        params_location.push(name);
-        params_location.into_boxed_path()
-    }
 
     pub fn get_zcash_data_path(&self) -> Box<Path> {
         let mut zcash_data_location; 
@@ -335,19 +318,8 @@ impl LightClient {
         info!("Read wallet with birthday {}", lc.wallet.get_first_tx_block());
         
         // Read Sapling Params
-        let mut f = match File::open(config.get_params_path("sapling-output.params")) {
-            Ok(file) => file,
-            Err(_) => return Err(Error::new(ErrorKind::NotFound, 
-                            format!("Couldn't read {}", config.get_params_path("sapling-output.params").display())))
-        };
-        f.read_to_end(&mut lc.sapling_output)?;
-        
-        let mut f = match File::open(config.get_params_path("sapling-spend.params")) {
-            Ok(file) => file,
-            Err(_) => return Err(Error::new(ErrorKind::NotFound, 
-                            format!("Couldn't read {}", config.get_params_path("sapling-spend.params").display())))
-        };
-        f.read_to_end(&mut lc.sapling_spend)?;
+        lc.sapling_output.extend_from_slice(SaplingParams::get("sapling-output.params").unwrap().as_ref());
+        lc.sapling_spend.extend_from_slice(SaplingParams::get("sapling-spend.params").unwrap().as_ref());
 
         info!("Created LightClient to {}", &config.server);
         println!("Lightclient connecting to {}", config.server);

src/lightwallet/mod.rs

@@ -1228,24 +1228,17 @@ pub mod tests {
     use super::LightWallet;
     use crate::LightClientConfig;
     use secp256k1::{Secp256k1, key::PublicKey, key::SecretKey};
+    use crate::SaplingParams;
 
     fn get_sapling_params(config: &LightClientConfig) -> Result<(Vec<u8>, Vec<u8>), Error> {
         // Read Sapling Params
         let mut sapling_output = vec![];
-        let mut f = match File::open(config.get_params_path("sapling-output.params")) {
-            Ok(file) => file,
-            Err(_) => return Err(Error::new(ErrorKind::NotFound,
-                                            format!("Couldn't read {}", config.get_params_path("sapling-output.params").display())))
-        };
-        f.read_to_end(&mut sapling_output)?;
+        sapling_output.extend_from_slice(SaplingParams::get("sapling-output.params").unwrap().as_ref());
+        println!("Read output {}", sapling_output.len());
 
         let mut sapling_spend = vec![];
-        let mut f = match File::open(config.get_params_path("sapling-spend.params")) {
-            Ok(file) => file,
-            Err(_) => return Err(Error::new(ErrorKind::NotFound,
-                                            format!("Couldn't read {}", config.get_params_path("sapling-spend.params").display())))
-        };
-        f.read_to_end(&mut sapling_spend)?;
+        sapling_spend.extend_from_slice(SaplingParams::get("sapling-spend.params").unwrap().as_ref());
+        println!("Read output {}", sapling_spend.len());
 
         Ok((sapling_spend, sapling_output))
     }

src/main.rs

@@ -1,3 +1,6 @@
+#[macro_use]
+extern crate rust_embed;
+
 mod lightclient;
 mod lightwallet;
 mod address;
@@ -24,6 +27,10 @@ pub mod grpc_client {
     include!(concat!(env!("OUT_DIR"), "/cash.z.wallet.sdk.rpc.rs"));
 }
 
+#[derive(RustEmbed)]
+#[folder = "zcash-params/"]
+pub struct SaplingParams;
+
 pub fn main() {
     // Get command line arguments
     let matches = App::new("ZecLite CLI")