Fix alpine ca (#354)

* fix ca loading for alpine

* fix ca loading for alpine

* fix ca loading for alpine

* change gzipped detection

* change gzipped detection

---------

Co-authored-by: Daniel Eisenberg <danielei@checkpoint.com>

components/security_apps/waap/waap_clib/ParserGzip.cc

@@ -0,0 +1,115 @@
+// Copyright (C) 2022 Check Point Software Technologies Ltd. All rights reserved.
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "ParserGzip.h"
+#include "debug.h"
+
+USE_DEBUG_FLAG(D_WAAP_PARSER_GZIP);
+
+const std::string ParserGzip::m_parserName = "ParserGzip";
+
+ParserGzip::ParserGzip(IParserStreamReceiver &receiver, size_t parser_depth)
+:m_receiver(receiver), m_key("gzip"), m_state(s_start), m_stream(nullptr) {
+}
+
+ParserGzip::~ParserGzip() {
+    if (m_stream != nullptr) {
+        finiCompressionStream(m_stream);
+        m_stream = nullptr;
+    }
+}
+
+size_t ParserGzip::push(const char *buf, size_t len) {
+    dbgTrace(D_WAAP_PARSER_GZIP) << "len=" << (unsigned long int)len << ")";
+
+    if (len == 0) {
+        dbgTrace(D_WAAP_PARSER_GZIP) << "end of data signal! m_state=" << m_state;
+
+        // flush
+        if (m_state != s_start) { // only emit if at least something was pushed
+            if (m_receiver.onKvDone() != 0) {
+                m_state = s_error;
+            }
+        }
+
+        return 0;
+    }
+    DecompressionResult res;
+    switch (m_state) {
+    case s_start:
+        dbgTrace(D_WAAP_PARSER_GZIP) << "s_start";
+        if (m_receiver.onKey(m_key.data(), m_key.size()) != 0) {
+            m_state = s_error;
+            return 0;
+        }
+        m_stream = initCompressionStream();
+        m_state = s_forward;
+        // fallthrough //
+        CP_FALL_THROUGH;
+    case s_forward:
+        dbgTrace(D_WAAP_PARSER_GZIP) << "s_forward";
+        res = decompressData(
+            m_stream,
+            len,
+            reinterpret_cast<const unsigned char *>(buf));
+        dbgTrace(D_WAAP_PARSER_GZIP) << "res: " << res.ok
+            << ", size: " << res.num_output_bytes
+            << ", is last: " << res.is_last_chunk;
+
+        if (!res.ok) {
+            m_state = s_error;
+            break;
+        }
+
+        if (res.num_output_bytes != 0 &&
+                m_receiver.onValue(reinterpret_cast<const char *>(res.output), res.num_output_bytes) != 0) {
+            m_state = s_error;
+            break;
+        }
+
+        if (res.is_last_chunk) {
+            m_state = s_done;
+            break;
+        }
+        break;
+    case s_done:
+        if (len > 0) {
+            dbgTrace(D_WAAP_PARSER_GZIP) << " unexpected data after completion, len=" << len;
+            m_state = s_error;
+            return 0; // Return 0 to indicate error
+        }
+        break;
+    case s_error:
+        dbgTrace(D_WAAP_PARSER_GZIP) << "s_error";
+        return 0;
+    }
+
+    return len;
+}
+
+void ParserGzip::finish() {
+    push(NULL, 0);
+    if (m_state != s_done) {
+        m_state = s_error;
+        return;
+    }
+}
+
+const std::string &
+ParserGzip::name() const {
+    return m_parserName;
+}
+
+bool ParserGzip::error() const {
+    return m_state == s_error;
+}