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mbedtls_debug_print_crt: Reduce stack usage

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Allocate a temporary debug buffer on the heap

Signed-off-by: Deomid rojer Ryabkov <rojer@rojer.me>
This commit is contained in:
Deomid rojer Ryabkov 2024-03-19 00:55:43 +00:00
parent 92152dc746
commit 557d0a24ff
1 changed files with 9 additions and 6 deletions
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15
library/debug.c
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@ -385,7 +385,7 @@ void mbedtls_debug_print_crt(const mbedtls_ssl_context *ssl, int level,
const char *file, int line,
const char *text, const mbedtls_x509_crt *crt)
{
char str[DEBUG_BUF_SIZE];
char *buf = NULL;
int i = 0;
if (NULL == ssl ||
@ -396,19 +396,22 @@ void mbedtls_debug_print_crt(const mbedtls_ssl_context *ssl, int level,
return;
}
buf = mbedtls_calloc(1, 1024);
if (buf == NULL) {
return;
}
while (crt != NULL) {
char buf[1024];
mbedtls_snprintf(buf, 1023, "%s #%d:\n", text, ++i);
debug_send_line(ssl, level, file, line, buf);
mbedtls_snprintf(str, sizeof(str), "%s #%d:\n", text, ++i);
debug_send_line(ssl, level, file, line, str);
mbedtls_x509_crt_info(buf, sizeof(buf) - 1, "", crt);
mbedtls_x509_crt_info(buf, 1023, "", crt);
debug_print_line_by_line(ssl, level, file, line, buf);
debug_print_pk(ssl, level, file, line, "crt->", &crt->pk);
crt = crt->next;
}
mbedtls_free(buf);
}
#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_X509_REMOVE_INFO */