Add option to force debug output to log file

include/wolfprovider/wp_logging.h

@@ -78,6 +78,9 @@
  * WOLFPROV_LOG_PRINTF  Define to Use printf instead of fprintf (to stderr)
  *                        for logs. Not applicable if using WOLFPROV_USER_LOG
  *                        or custom logging callback.
+ * WOLFPROV_LOG_FILE     Define to specify a file path for debug output instead
+ *                        of stderr. This is typically set via --debug-log=FILE
+ *                        build script argument.
  *
  * COMPILE-TIME MACRO CONFIGURATIONS:
  * Define these macros in this header to control logging at compile time:

scripts/build-wolfprovider.sh

@@ -10,6 +10,7 @@ show_help() {
   echo "  --clean                    Run make clean in OpenSSL, wolfSSL, and wolfProvider"
   echo "  --distclean                Remove source and install directories of OpenSSL, wolfSSL, and wolfProvider"
   echo "  --debug                    Builds OpenSSL, wolfSSL, and WolfProvider with debugging enabled. This is the same as setting WOLFPROV_DEBUG=1"
+  echo "  --debug-log=FILE           Force all wolfProvider debug output to specified log file instead of stderr/stdout (FILE = path to log file you want to use)"
   echo "  --debug-asn-template       Enable debug information for asn within wolfSSL"
   echo "  --disable-err-trace        No debug trace messages from library errors in wolfSSL"
   echo "  --openssl-ver=VER          Which version of OpenSSL to clone"
@@ -33,6 +34,7 @@ show_help() {
   echo "  WOLFPROV_CLEAN             If set to 1, run make clean in OpenSSL, wolfSSL, and wolfProvider"
   echo "  WOLFPROV_DISTCLEAN         If set to 1, remove the source and install directories of OpenSSL, wolfSSL, and wolfProvider"
   echo "  WOLFPROV_DEBUG             If set to 1, builds OpenSSL, wolfSSL, and wolfProvider with debug options enabled"
+  echo "  WOLFPROV_LOG_FILE          Path to log file for wolfProvider debug output (alternative to stderr)"
   echo "  WOLFPROV_QUICKTEST         If set to 1, disables some tests in the test suite to increase test speed"
   echo "  WOLFPROV_DISABLE_ERR_TRACE If set to 1, wolfSSL will not be configured with --enable-debug-trace-errcodes=backtrace"
   echo "  WOLFPROV_LEAVE_SILENT      If set to 1, suppress logging of return 0 in functions where return 0 is expected behavior sometimes."
@@ -57,6 +59,14 @@ for arg in "$@"; do
         --debug)
             WOLFPROV_DEBUG=1
             ;;
+        --debug-log=*)
+            IFS='=' read -r trash log_file <<< "$arg"
+            if [ -z "$log_file" ]; then
+                echo "No file path given for --debug-log"
+                args_wrong+="$arg, "
+            fi
+            WOLFPROV_LOG_FILE="$log_file"
+            ;;
         --debug-asn-template)
             WOLFSSL_DEBUG_ASN_TEMPLATE=1
             ;;

scripts/utils-openssl.sh

@@ -348,6 +348,8 @@ install_openssl() {
 }
 
 init_openssl() {
+    WOLFPROV_BUILD_DEBIAN=${WOLFPROV_BUILD_DEBIAN:-0}
+
     if [ $WOLFPROV_BUILD_DEBIAN -eq 1 ]; then
         install_openssl_deb
     else

scripts/utils-wolfprovider.sh

@@ -100,6 +100,10 @@ install_wolfprov() {
         WOLFPROV_CONFIG_CFLAGS="${WOLFPROV_CONFIG_CFLAGS} -DWOLFPROV_LEAVE_SILENT_MODE"
     fi
 
+    if [ -n "${WOLFPROV_LOG_FILE}" ]; then
+        WOLFPROV_CONFIG_CFLAGS="${WOLFPROV_CONFIG_CFLAGS} -DWOLFPROV_LOG_FILE=\\\"${WOLFPROV_LOG_FILE}\\\""
+    fi
+
     ./configure ${WOLFPROV_CONFIG_OPTS} CFLAGS="${WOLFPROV_CONFIG_CFLAGS}" >>$LOG_FILE 2>&1
     RET=$?
     if [ $RET != 0 ]; then

src/wp_logging.c

@@ -173,6 +173,18 @@ static void wolfprovider_log(const int logLevel, const int component,
         WOLFPROV_USER_LOG(logMessage);
 #elif defined(WOLFPROV_LOG_PRINTF)
         printf("%s\n", logMessage);
+#elif defined(WOLFPROV_LOG_FILE)
+        {
+            FILE* logFile = fopen(WOLFPROV_LOG_FILE, "a");
+            if (logFile != NULL) {
+                fprintf(logFile, "%s\n", logMessage);
+                fclose(logFile);
+            } else {
+                fprintf(stderr, "wolfProvider: Failed to open log file %s\n", 
+                    WOLFPROV_LOG_FILE);
+                fprintf(stderr, "%s\n", logMessage);
+            }
+        }
 #else
         fprintf(stderr, "%s\n", logMessage);
 #endif