cgi_url_validate - validate that url is of an allowed format

       buf - a 0 terminated string

       cgi_url_validate  will check that a URL starts with one of the accepted safe schemes.  If not, it returns
       "#" as a safe substitute.  Currently accepted schemes are http, https, ftp  and  mailto.   It  then  html
       escapes the entire URL so that it is safe to insert in an href attribute.

       cgi_url_validate  - validate that url is of an allowed format

       esc - a newly allocated string

cgi_debug_init(3),    cgi_parse(3),    cgi_destroy(3),    cgi_js_escape(3),   cgi_html_escape_strfunc(3),
       cgi_register_strfuncs(3),   cgi_output(3),   parse_rfc2388(3),    cgi_url_validate(3),    open_upload(3),
       cgi_cs_init(3),  cgi_url_escape_more(3),  cgi_html_strip_strfunc(3),  cgi_neo_error(3),  cgi_redirect(3),
       cgi_filehandle(3),   cgi_register_parse_cb(3),   cgi_url_escape(3),   cgi_init(3),   cgi_redirect_uri(3),
       cgi_cookie_clear(3),   cgi_url_unescape(3),   cgi_vredirect(3),   cgi_display(3),   cgi_html_ws_strip(3),
       cgi_error(3), cgi_cookie_set(3), cgi_text_html_strfunc(3), cgi_cookie_authority

ClearSilver                                       12 July 2007                               cgi_url_validate(3)

       #include <cgi/cgi.h>

       NEOERR *cgi_url_validate (const char *buf, char **esc);