pki: Created pki --est man page

src/libstrongswan/utils/lexparser.c

@@ -36,6 +36,14 @@ bool match(const char *pattern, const chunk_t *ch)
 	return ch->len == strlen(pattern) && strncmp(pattern, ch->ptr, ch->len) == 0;
 }
 
+/**
+ * compare string with chunk ignoring the case of the characters
+ */
+bool matchcase(const char *pattern, const chunk_t *ch)
+{
+	return ch->len == strlen(pattern) && strncasecmp(pattern, ch->ptr, ch->len) == 0;
+}
+
 /**
  * extracts a token ending with the first occurrence of a given termination symbol
  */

src/libstrongswan/utils/lexparser.h

@@ -1,6 +1,5 @@
 /*
- * Copyright (C) 2001-2008 Andreas Steffen
- *
+ * Copyright (C) 2001-2022 Andreas Steffen
  *
  * Copyright (C) secunet Security Networks AG
  *
@@ -35,6 +34,11 @@ bool eat_whitespace(chunk_t *src);
  */
 bool match(const char *pattern, const chunk_t *ch);
 
+/**
+ * Compare null-terminated pattern with chunk ignoring the case of the characters
+ */
+bool matchcase(const char *pattern, const chunk_t *ch);
+
 /**
  * Extracts a token ending with the first occurrence of a given termination symbol
  */