Add support for PEM files

bojand · Aug 20, 2022 · a118670 · a118670
1 parent 6579928
commit a118670
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Showing 4 changed files with 53 additions and 0 deletions.
diff --git a/src/map.rs b/src/map.rs
@@ -99,6 +99,12 @@ matcher_map!(
         "obj",
         matchers::app::is_coff
     ),
+    (
+        MatcherType::App,
+        "application/x-x509-ca-cert",
+        "pem",
+        matchers::app::is_pem
+    ),
     // Book
     (
         MatcherType::Book,

diff --git a/src/matchers/app.rs b/src/matchers/app.rs
@@ -125,3 +125,20 @@ pub fn is_coff_ia64(buf: &[u8]) -> bool {
 pub fn is_coff(buf: &[u8]) -> bool {
     is_coff_x64(buf) || is_coff_i386(buf) || is_coff_ia64(buf)
 }
+
+/// Returns whether a buffer is pem
+pub fn is_pem(buf: &[u8]) -> bool {
+    // https://en.wikipedia.org/wiki/List_of_file_signatures
+    buf.len() > 11
+        && buf[0] == b'-'
+        && buf[1] == b'-'
+        && buf[2] == b'-'
+        && buf[3] == b'-'
+        && buf[4] == b'-'
+        && buf[5] == b'B'
+        && buf[6] == b'E'
+        && buf[7] == b'G'
+        && buf[8] == b'I'
+        && buf[9] == b'N'
+        && buf[10] == b' '
+}
diff --git a/testdata/sample.pem b/testdata/sample.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/tests/app.rs b/tests/app.rs
@@ -45,3 +45,5 @@ test_format!(
 test_format!(App, "application/wasm", "wasm", wasm, "sample.wasm");
 
 test_format!(App, "application/x-x509-ca-cert", "der", der, "sample.der");
+
+test_format!(App, "application/x-x509-ca-cert", "pem", pem, "sample.pem");
Original file line number	Diff line number	Diff line change
Expand Up		@@ -45,3 +45,5 @@ test_format!(
		test_format!(App, "application/wasm", "wasm", wasm, "sample.wasm");

		test_format!(App, "application/x-x509-ca-cert", "der", der, "sample.der");

		test_format!(App, "application/x-x509-ca-cert", "pem", pem, "sample.pem");