From 230fcd70788cfd7406fb033b1b07a703baf2b03f Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Sat, 12 Feb 2022 12:49:53 +0100
Subject: [PATCH 1/2] feat(config): add offline args

---
 config/README.md  | 1 +
 config/src/lib.rs | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/config/README.md b/config/README.md
index d07770977206..cbbcc53101c6 100644
--- a/config/README.md
+++ b/config/README.md
@@ -74,6 +74,7 @@ gas_reports = ['*']
 ## Sets the concrete solc version to use, this overrides the `auto_detect_solc` value
 # solc_version = '0.8.10'
 auto_detect_solc = true
+offline = false
 optimizer = true
 optimizer_runs = 200
 verbosity = 0
diff --git a/config/src/lib.rs b/config/src/lib.rs
index 72e42277778c..162194c57b24 100644
--- a/config/src/lib.rs
+++ b/config/src/lib.rs
@@ -101,6 +101,13 @@ pub struct Config {
     pub solc_version: Option<Version>,
     /// whether to autodetect the solc compiler version to use
     pub auto_detect_solc: bool,
+    /// Offline mode, if set, network access (downloading solc) is disallowed.
+    ///
+    /// Relationship with `auto_detect_solc`:
+    ///    - if `auto_detect_solc = true` and `offline = true`, the required solc version(s) will
+    ///      be auto detected but if the solc version is not installed, it will _not_ try to
+    ///      install it
+    pub offline: bool,
     /// Whether to activate optimizer
     pub optimizer: bool,
     /// Sets the optimizer runs
@@ -357,6 +364,7 @@ impl Config {
             .solc_config(SolcConfig::builder().settings(self.solc_settings()?).build())
             .ignore_error_codes(self.ignored_error_codes.clone())
             .set_auto_detect(self.auto_detect_solc)
+            .set_offline(self.offline)
             .set_cached(cached)
             .set_no_artifacts(no_artifacts)
             .build()?;
@@ -704,6 +712,7 @@ impl Default for Config {
             gas_reports: vec!["*".to_string()],
             solc_version: None,
             auto_detect_solc: true,
+            offline: false,
             optimizer: true,
             optimizer_runs: 200,
             optimizer_details: None,

From 89231c1cc219d6b678a20b2e03f2d4d38aa12ff1 Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Sat, 12 Feb 2022 12:58:12 +0100
Subject: [PATCH 2/2] feat(forge): add --offline flag

---
 cli/src/cmd/build.rs   | 11 +++++++++++
 cli/src/cmd/flatten.rs |  1 +
 2 files changed, 12 insertions(+)

diff --git a/cli/src/cmd/build.rs b/cli/src/cmd/build.rs
index 214a2051db07..d143992f2f87 100644
--- a/cli/src/cmd/build.rs
+++ b/cli/src/cmd/build.rs
@@ -124,6 +124,13 @@ pub struct BuildArgs {
     #[serde(skip)]
     pub no_auto_detect: bool,
 
+    #[clap(
+        help = "if set to true, runs without accessing the network (missing solc versions will not be installed)",
+        long
+    )]
+    #[serde(skip)]
+    pub offline: bool,
+
     #[clap(
         help = "force recompilation of the project, deletes the cache and artifacts folders",
         long
@@ -201,6 +208,10 @@ impl Provider for BuildArgs {
             dict.insert("auto_detect_solc".to_string(), false.into());
         }
 
+        if self.offline {
+            dict.insert("offline".to_string(), true.into());
+        }
+
         if self.force {
             dict.insert("force".to_string(), self.force.into());
         }
diff --git a/cli/src/cmd/flatten.rs b/cli/src/cmd/flatten.rs
index b586be332bbd..2b4afb8e3baf 100644
--- a/cli/src/cmd/flatten.rs
+++ b/cli/src/cmd/flatten.rs
@@ -75,6 +75,7 @@ impl Cmd for FlattenArgs {
             compiler: Default::default(),
             ignored_error_codes: vec![],
             no_auto_detect: false,
+            offline: false,
             force: false,
             hardhat,
             libraries: vec![],