str: Add function for converting string into DNS name

Add str2fqdn for converting hostname string into DNS name notation:

    www.xxxx.yy.com -> 3www4xxxx2yy3com0

Returned string must be freed after use by the caller.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/str.h b/str.h
index 7879af6..a362c53 100644
--- a/str.h
+++ b/str.h
@@ -14,5 +14,6 @@ extern char *argv2str(int startind, int argc, char **argv);
 extern char **argv_insert(char **argv, size_t *count, const char *str);
 extern void argv_free(char **argv);
 extern int str2mac(const char *str, uint8_t *mac, size_t len);
+extern char *str2fqdn(const char *str);
 
 #endif /* STR_H */