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Add OOM check and debug message in CertStore (#5820)

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Fixes #5819
This commit is contained in:
Earle F. Philhower, III 2019-02-26 02:46:25 +00:00 committed by GitHub
parent d507c799f7
commit 95cf925719
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1 changed files with 16 additions and 0 deletions
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16
libraries/ESP8266WiFi/src/CertStoreBearSSL.cpp
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@ -20,6 +20,13 @@
#include "CertStoreBearSSL.h"
#include <memory>
#ifdef DEBUG_ESP_SSL
#define DEBUG_BSSL(fmt, ...) DEBUG_ESP_PORT.printf_P((PGM_P)PSTR( "BSSL:" fmt), ## __VA_ARGS__)
#else
#define DEBUG_BSSL(...)
#endif
namespace BearSSL {
extern "C" {
@ -39,6 +46,11 @@ CertStore::CertInfo CertStore::_preprocessCert(uint32_t length, uint32_t offset,
// Process it using SHA256, same as the hashed_dn
br_x509_decoder_context *ctx = new br_x509_decoder_context;
br_sha256_context *sha256 = new br_sha256_context;
if (!ctx || !sha256) {
DEBUG_BSSL("CertStore::_preprocessCert: OOM\n");
return ci;
}
br_sha256_init(sha256);
br_x509_decoder_init(ctx, dn_append, sha256, nullptr, nullptr);
br_x509_decoder_push(ctx, (const void*)raw, length);
@ -172,6 +184,10 @@ const br_x509_trust_anchor *CertStore::findHashedTA(void *ctx, void *hashed_dn,
cs->_data->close();
cs->_x509 = new X509List(der, ci.length);
free(der);
if (!cs->_x509) {
DEBUG_BSSL("CertStore::findHashedTA: OOM\n");
return nullptr;
}
br_x509_trust_anchor *ta = (br_x509_trust_anchor*)cs->_x509->getTrustAnchors();
memcpy(ta->dn.data, ci.sha256, sizeof(ci.sha256));