tests: add simple test for passphrase-protected PEM file support

tests/CMakeLists.txt

@@ -61,6 +61,7 @@ set(TESTS
   password_auth_fails_with_wrong_username
   public_key_auth_fails_with_wrong_key
   public_key_auth_succeeds_with_correct_rsa_key
+  public_key_auth_succeeds_with_correct_encrypted_rsa_key
   keyboard_interactive_auth_fails_with_wrong_response
   keyboard_interactive_auth_succeeds_with_correct_response
   )

tests/Makefile.am

@@ -31,3 +31,4 @@ EXTRA_DIST += test_password_auth_succeeds_with_correct_credentials.c
 EXTRA_DIST += test_public_key_auth_fails_with_wrong_key.c
 EXTRA_DIST += test_public_key_auth_succeeds_with_correct_dsa_key.c
 EXTRA_DIST += test_public_key_auth_succeeds_with_correct_rsa_key.c
+EXTRA_DIST += test_public_key_auth_succeeds_with_correct_encrypted_rsa_key.c

tests/key_rsa_encrypted

@@ -0,0 +1,30 @@
+-----BEGIN RSA PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: AES-128-CBC,E030CC29AE4C20669EE41DF3DE4C0886
+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-----END RSA PRIVATE KEY-----

tests/key_rsa_encrypted.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC92YlGoc4PJy6DzX916JJZhxkvmkWBLGJdWOL7R9B6iaYEKebBxzTE3P1RcnxnuI06kklVq/KcDP9sLlgawTZcDg7ifM7HncPOi18OON8vvVVzodikHzuupjhpI5YTT9wwV2fDVi2URsBjvX4AFiZ5WM3/NwqdKpYABzWieBikXGJ58Tsnw+zQw2qMmKKESBuzSN538loTAj5iEH/GAKYDbbH9t2a17qhNCNEw4vrtURT9JqwO1cOg7N1OKpmqCPEbK0wuSTljNC230VJ06X/8UqahWWSH6MreGy6gwpPi6i9wFiFLur301R0dTPiKVhz6bguhcC1EAlhSgjfelFJt awl03@bounty

tests/test_public_key_auth_succeeds_with_correct_encrypted_rsa_key.c

@@ -0,0 +1,38 @@
+#include "session_fixture.h"
+
+#include <libssh2.h>
+
+#include <stdio.h>
+
+const char *USERNAME = "libssh2"; /* configured in Dockerfile */
+const char *PASSWORD = "libssh2";
+const char *KEY_FILE_PRIVATE = "key_rsa_encrypted";
+const char *KEY_FILE_PUBLIC = "key_rsa_encrypted.pub"; /* configured in Dockerfile */
+
+int test(LIBSSH2_SESSION *session)
+{
+    int rc;
+
+    const char *userauth_list =
+        libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
+    if (userauth_list == NULL) {
+        print_last_session_error("libssh2_userauth_list");
+        return 1;
+    }
+
+    if (strstr(userauth_list, "publickey") == NULL) {
+        fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
+                userauth_list);
+        return 1;
+    }
+
+    rc = libssh2_userauth_publickey_fromfile_ex(
+        session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
+        PASSWORD);
+    if (rc != 0) {
+        print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
+        return 1;
+    }
+
+    return 0;
+}