Imported Upstream version 2.7

[ossec-hids.git] / src / shared / string_op.c

diff --git a/src/shared/string_op.c b/src/shared/string_op.c
new file mode 100755 (executable)
index 0000000..f458793
--- /dev/null
+++ b/src/shared/string_op.c
@@ -0,0 +1,91 @@
+/* @(#) $Id: ./src/shared/string_op.c, 2011/11/01 dcid Exp $
+ */
+
+/* Copyright (C) 2009 Trend Micro Inc.
+ * All rights reserved.
+ *
+ * This program is a free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General Public
+ * License (version 2) as published by the FSF - Free Software
+ * Foundation
+ *
+ * License details at the LICENSE file included with OSSEC or
+ * online at: http://www.ossec.net/en/licensing.html
+ */
+
+
+#include "shared.h"
+#include "string.h"
+
+/** os_trimcrlf
+ * Trims the cr and/or LF from the last positions of a string
+ */
+void os_trimcrlf(char *str)
+{
+    int len;
+
+    len=strlen(str);
+    len--;
+
+    while (str[len]=='\n' || str[len]=='\r')
+    {
+       str[len]='\0';
+       len--;
+    }
+}
+
+/* Remove offending char (e.g., double quotes) from source */
+char *os_strip_char(char *source, char remove) {
+    char *clean;
+    char *iterator = source;
+    int length = 0;
+    int i;
+
+    // Figure out how much memory to allocate
+    for( ; *iterator; iterator++ ) {
+        if ( *iterator != remove ) {
+            length++;
+        }
+    }
+
+    // Allocate the memory
+    if( (clean = malloc( length + 1 )) == NULL ) {
+        // Return NULL
+        return NULL;
+    }
+    memset(clean, '\0', length + 1);
+
+    // Remove the characters
+    iterator=source;
+    for( i=0; *iterator; iterator++ ) {
+        if ( *iterator != remove ) {
+            clean[i] = *iterator;
+            i++;
+        }
+    }
+
+    return clean;
+}
+
+/* Do a substring */
+int os_substr(char *dest, const char *src, int position, int length) {
+    dest[0]='\0';
+
+    if( length <= 0  ) {
+        // Unsupported negative length string
+        return -3;
+    }
+    if( src == NULL ) {
+        return -2;
+    }
+    if( position >= strlen(src) ) {
+        return -1;
+    }
+
+    strncat(dest, (src + position), length);
+    // Return Success
+    return 0;
+}
+
+
+/* EOF */