fix: create directory where store file is, if necessary

Sponsored-by: author

3 files changed, 8 insertions, 2 deletions

diff --git a/src/error.rs b/src/error.rs
index 704f4ad..5ef6d9d 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -63,6 +63,9 @@ pub enum CAError {
     #[error("Failed to read {0}")]
     ReadError(PathBuf, #[source] std::io::Error),
 
+    #[error("Could not create directory {0}")]
+    CreateDir(PathBuf, #[source] std::io::Error),
+
     #[error("Could not create file {0}")]
     Create(PathBuf, #[source] std::io::Error),
 
diff --git a/src/util.rs b/src/util.rs
index a589702..358bb52 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,7 +1,7 @@
 //! Utility functions for SSH CA tool.
 
 use crate::error::CAError;
-use std::fs::{File, Permissions};
+use std::fs::{create_dir_all, File, Permissions};
 use std::io::Write;
 use std::os::unix::fs::PermissionsExt;
 use std::path::Path;
@@ -22,6 +22,9 @@ pub(crate) fn read_as_string<P: AsRef<Path>>(filename: P) -> Result<String, CAEr
 /// Write string to file.
 pub fn write_string<P: AsRef<Path>>(filename: P, s: &str) -> Result<(), CAError> {
     let filename = filename.as_ref();
+    if let Some(parent) = filename.parent() {
+        create_dir_all(parent).map_err(|e| CAError::CreateDir(parent.into(), e))?;
+    }
     let mut file =
         File::create(filename).map_err(|err| CAError::Create(filename.to_path_buf(), err))?;
     let ro_user = Permissions::from_mode(0o600);
diff --git a/sshca.md b/sshca.md
index e7f4867..f999540 100644
--- a/sshca.md
+++ b/sshca.md
@@ -270,7 +270,7 @@ then stdout contains "[]"
 ~~~
 
 ~~~{#config.yaml .file .yaml}
-store: store.yaml
+store: xdg/data/dir/store.yaml
 ~~~
 
 When we create two new CA keys, for host and user certification, they