1 files changed, 65 insertions, 0 deletions
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..1b0fcb6
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,65 @@
+/*
+  This file is part of msr.
+
+  msr is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+  
+  msr is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+  License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with Foobar. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "utils.h"
+
+void* catch_malloc(size_t size, const char * const err) {
+  errno = 0;
+  void *m = malloc(size);
+  if (m == NULL || errno != 0) {
+    fprintf(stderr,"Error: %s\n",err);
+    exit(1);
+  }
+  return m;
+}
+
+
+void* catch_smalloc(size_t size, const char * const err) {
+  errno = 0;
+  void* m = sodium_malloc(size);
+  if (m == NULL || errno != 0) {
+    fprintf(stderr,"Error: %s\n",err);
+    exit(1);
+  }
+  return m;
+}
+
+const char * error_to_str(const Error e) {
+  switch (e) {
+    case SUCCESS: return NULL;
+    case E_NULL: return "Null argument.";
+    case E_CHECKSUM: return "Secret key checksum failed.";
+    case E_ALG_CHOICE: return "Unsupported algorithm choice.";
+    case E_ALREADY_ENCRYPTED: return "Secret key already encrypted.";
+    case E_ALREADY_DECRYPTED: return "Secret key already decrypted.";
+    case E_KDF_FAIL: return "Internal KDF error.";
+    case E_BAD_PASS: return "Incorrect password for secret key.";
+    case E_VERIFY: return "Verification failed";
+    case E_WRONG_PUBKEY: return "Public key ID mismatch.";
+    case E_SIGN: return "Internal signing error.";
+    case E_SMALL_BUFF: return "Buffer too small.";
+    case E_INVALID_LEN: return "Invalid buffer length.";
+    case E_B64_BAD_STR: return "Invalid characters found in string.";
+    case E_PASS_MISMATCH: return "Passwords do not match.";
+    case E_BAD_FILE: return "Unable to open file.";
+    case E_BAD_PUBKEY_DAT: return "Invalid public key data.";
+    case E_BAD_SECKEY_DAT: return "Invalid secret key data.";
+    case E_ENCRYPTED: return "Secret key is encrypted and so unusable.";
+    case E_INVALID_ARG: return "Invalid argument.";
+    default: return "Unreachable.";
+  }
+}