59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
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#include "mbedtls/error.h"
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#include <string.h>
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#include <stdio.h>
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// test_code checks that the provided code results in the provided error string for any size
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// buffer. It calls mbedtls_strerror() to fill a buffer that is from 1 to 100 bytes in length
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// and then checks that the buffer contents is OK and that a few guard bytes before and after
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// the buffer were not overwritten.
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int test_code(int code, char *str) {
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char buf[100];
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int ok = 1;
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int res;
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// test zero-length buffer
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memset(buf, -3, 100);
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mbedtls_strerror(code, buf + 4, 0);
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for (int i = 0; i < 10; i++) {
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if (buf[i] != -3) {
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printf("Error: guard overwritten buflen=0 i=%d buf[i]=%d\n", i, buf[i]);
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ok = 0;
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}
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}
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// test
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for (size_t buflen = 1; buflen < 90; buflen++) {
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memset(buf, -3, 100);
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mbedtls_strerror(code, buf + 4, buflen);
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for (int i = 0; i < 4; i++) {
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if (buf[i] != -3) {
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printf("Error: pre-guard overwritten buflen=%d i=%d buf[i]=%d\n", buflen, i, buf[i]);
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ok = 0;
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}
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}
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for (int i = 4 + buflen; i < 100; i++) {
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if (buf[i] != -3) {
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printf("Error: post-guard overwritten buflen=%d i=%d buf[i]=%d\n", buflen, i, buf[i]);
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ok = 0;
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}
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}
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char exp[100];
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strncpy(exp, str, buflen);
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exp[buflen - 1] = 0;
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if (strcmp(buf + 4, exp) != 0) {
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printf("Error: expected %s, got %s\n", exp, buf);
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ok = 0;
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}
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}
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printf("Test %x -> %s is %s\n", code, str, ok?"OK":"*** BAD ***");
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}
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int main() {
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test_code(0x7200, "MBEDTLS_ERR_SSL_INVALID_RECORD");
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test_code(0x7780, "MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE");
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test_code(0x0074, "MBEDTLS_ERR_SHA256_BAD_INPUT_DATA");
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test_code(0x6600 | 0x0074, "MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH+MBEDTLS_ERR_SHA256_BAD_INPUT_DATA");
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test_code(103, "MBEDTLS_ERR_UNKNOWN (0x0067)");
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}
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