Instr(Request.ServerVariable(HTTP_REFERER),"pagena me.asp")

[bolatito]

How can I make use of thisi ASP instruction in trying to restrict access to a page.

If Instr(Request.S erverVariable(H TTP_REFERER),"p agename.asp")

The pagename is the name of the page that containsn the form action.


<%
if Instr (Request.Server Variables(HTTP_ REFERER),"log") = "true" then
response.write( "INVALID USER")
session.content s.remove("login ")
end if
%>

<%

if request.form("b tnsubmit") = "submit" then

if request.form("f name") = username and request.form("p w")= password then
response.redire ct("welcome.asp ")
else
response.redire ct("DEFAULT.ASP ")
end if
end if

%>

Both ASP commands are on two different pages.


ERROR CODES

The error codes displayed is

string expected as input

[jhardman]

Instr should return a number, 0 if false, >0 if true (I thought it returned the integer position of the found string within the greater string, but someone recently said it was the number of occurrences, regardless it should be a positive integer). try:
[code=asp]if Instr(Request.S erverVariables( HTTP_REFERER)," log") > 0 then [/code] Let me know if this helps.

Jared