Squashed 'lib/mbedtls/external/mbedtls/' content from commit 2ca6c285a0dd

git-subtree-dir: lib/mbedtls/external/mbedtls
git-subtree-split: 2ca6c285a0dd3f33982dd57299012dacab1ff206

1 files changed, 159 insertions, 0 deletions

diff --git a/scripts/data_files/error.fmt b/scripts/data_files/error.fmt
new file mode 100644
index 00000000000..781e72a919e
--- /dev/null
+++ b/scripts/data_files/error.fmt
@@ -0,0 +1,159 @@
+/*
+ *  Error message information
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#include "common.h"
+
+#include "mbedtls/error.h"
+
+#if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
+
+#if defined(MBEDTLS_ERROR_C)
+
+#include "mbedtls/platform.h"
+
+#include <stdio.h>
+#include <string.h>
+
+HEADER_INCLUDED
+
+const char *mbedtls_high_level_strerr(int error_code)
+{
+    int high_level_error_code;
+
+    if (error_code < 0) {
+        error_code = -error_code;
+    }
+
+    /* Extract the high-level part from the error code. */
+    high_level_error_code = error_code & 0xFF80;
+
+    switch (high_level_error_code) {
+    /* Begin Auto-Generated Code. */
+    HIGH_LEVEL_CODE_CHECKS
+        /* End Auto-Generated Code. */
+
+        default:
+            break;
+    }
+
+    return NULL;
+}
+
+const char *mbedtls_low_level_strerr(int error_code)
+{
+    int low_level_error_code;
+
+    if (error_code < 0) {
+        error_code = -error_code;
+    }
+
+    /* Extract the low-level part from the error code. */
+    low_level_error_code = error_code & ~0xFF80;
+
+    switch (low_level_error_code) {
+    /* Begin Auto-Generated Code. */
+    LOW_LEVEL_CODE_CHECKS
+        /* End Auto-Generated Code. */
+
+        default:
+            break;
+    }
+
+    return NULL;
+}
+
+void mbedtls_strerror(int ret, char *buf, size_t buflen)
+{
+    size_t len;
+    int use_ret;
+    const char *high_level_error_description = NULL;
+    const char *low_level_error_description = NULL;
+
+    if (buflen == 0) {
+        return;
+    }
+
+    memset(buf, 0x00, buflen);
+
+    if (ret < 0) {
+        ret = -ret;
+    }
+
+    if (ret & 0xFF80) {
+        use_ret = ret & 0xFF80;
+
+        // Translate high level error code.
+        high_level_error_description = mbedtls_high_level_strerr(ret);
+
+        if (high_level_error_description == NULL) {
+            mbedtls_snprintf(buf, buflen, "UNKNOWN ERROR CODE (%04X)", (unsigned int) use_ret);
+        } else {
+            mbedtls_snprintf(buf, buflen, "%s", high_level_error_description);
+        }
+
+#if defined(MBEDTLS_SSL_TLS_C)
+        // Early return in case of a fatal error - do not try to translate low
+        // level code.
+        if (use_ret == -(MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE)) {
+            return;
+        }
+#endif /* MBEDTLS_SSL_TLS_C */
+    }
+
+    use_ret = ret & ~0xFF80;
+
+    if (use_ret == 0) {
+        return;
+    }
+
+    // If high level code is present, make a concatenation between both
+    // error strings.
+    //
+    len = strlen(buf);
+
+    if (len > 0) {
+        if (buflen - len < 5) {
+            return;
+        }
+
+        mbedtls_snprintf(buf + len, buflen - len, " : ");
+
+        buf += len + 3;
+        buflen -= len + 3;
+    }
+
+    // Translate low level error code.
+    low_level_error_description = mbedtls_low_level_strerr(ret);
+
+    if (low_level_error_description == NULL) {
+        mbedtls_snprintf(buf, buflen, "UNKNOWN ERROR CODE (%04X)", (unsigned int) use_ret);
+    } else {
+        mbedtls_snprintf(buf, buflen, "%s", low_level_error_description);
+    }
+}
+
+#else /* MBEDTLS_ERROR_C */
+
+/*
+ * Provide a dummy implementation when MBEDTLS_ERROR_C is not defined
+ */
+void mbedtls_strerror(int ret, char *buf, size_t buflen)
+{
+    ((void) ret);
+
+    if (buflen > 0) {
+        buf[0] = '\0';
+    }
+}
+
+#endif /* MBEDTLS_ERROR_C */
+
+#if defined(MBEDTLS_TEST_HOOKS)
+void (*mbedtls_test_hook_error_add)(int, int, const char *, int);
+#endif
+
+#endif /* MBEDTLS_ERROR_C || MBEDTLS_ERROR_STRERROR_DUMMY */