opc source code

third_party/open62541/examples/common.h

@@ -0,0 +1,68 @@
+/* This work is licensed under a Creative Commons CCZero 1.0 Universal License.
+ * See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */
+
+#include <open62541/types.h>
+#include <open62541/types_generated_handling.h>
+#include <stdio.h>
+#include <errno.h>
+
+/* sleep_ms */
+#ifdef _WIN32
+# include <synchapi.h>
+# define sleep_ms(ms) Sleep(ms)
+#else
+# include <unistd.h>
+# define sleep_ms(ms) usleep(ms * 1000)
+#endif
+
+/* loadFile parses the certificate file.
+ *
+ * @param  path               specifies the file name given in argv[]
+ * @return Returns the file content after parsing */
+static UA_INLINE UA_ByteString
+loadFile(const char *const path) {
+    UA_ByteString fileContents = UA_STRING_NULL;
+
+    /* Open the file */
+    FILE *fp = fopen(path, "rb");
+    if(!fp) {
+        errno = 0; /* We read errno also from the tcp layer... */
+        return fileContents;
+    }
+
+    /* Get the file length, allocate the data and read */
+    fseek(fp, 0, SEEK_END);
+    fileContents.length = (size_t)ftell(fp);
+    fileContents.data = (UA_Byte *)UA_malloc(fileContents.length * sizeof(UA_Byte));
+    if(fileContents.data) {
+        fseek(fp, 0, SEEK_SET);
+        size_t read = fread(fileContents.data, sizeof(UA_Byte), fileContents.length, fp);
+        if(read != fileContents.length)
+            UA_ByteString_clear(&fileContents);
+    } else {
+        fileContents.length = 0;
+    }
+    fclose(fp);
+
+    return fileContents;
+}
+
+static UA_INLINE UA_StatusCode
+writeFile(const char* const path, const UA_ByteString buffer) {
+    FILE *fp = NULL;
+
+    fp = fopen(path, "wb");
+    if(fp == NULL)
+        return UA_STATUSCODE_BADINTERNALERROR;
+
+    for(UA_UInt32 bufIndex = 0; bufIndex < buffer.length; bufIndex++) {
+        int retVal = fputc(buffer.data[bufIndex], fp);
+        if(retVal == EOF) {
+            fclose(fp);
+            return UA_STATUSCODE_BADINTERNALERROR;
+        }
+    }
+
+    fclose(fp);
+    return UA_STATUSCODE_GOOD;
+}