utils: add uh_htmlescape() helper

The uh_htmlescape() function returns a copy of the given string with the
HTML special characters `<`, `>`, `"` and `'` replaced by HTML entities in
hexadecimal notation.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/utils.h b/utils.h
index c583f45..093deff 100644
--- a/utils.h
+++ b/utils.h
@@ -73,5 +73,6 @@ int uh_b64decode(char *buf, int blen, const void *src, int slen);
 bool uh_path_match(const char *prefix, const char *url);
 char *uh_split_header(char *str);
 bool uh_addr_rfc1918(struct uh_addr *addr);
+char *uh_htmlescape(const char *src);
 
 #endif