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/** --- BEGIN COPYRIGHT BLOCK ---
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
--- END COPYRIGHT BLOCK --- */
/*
* unauth.c -- CGI to discard cookies -- HTTP gateway
*/
#include "dsgw.h"
#include "dbtdsgw.h"
char *get_auth_cookie( char *cookie );
void generate_message( int type );
#define CKEXP_SUCCESS 1
#define CKEXP_FAILURE 2
int main( int argc, char **argv )
{
int reqmethod;
char *expck;
char *authck;
int rc;
char *qs = NULL;
/* Parse out the context=blah.html */
if (( qs = getenv( "QUERY_STRING" )) != NULL && *qs != '\0' ) {
/* parse the query string: */
auto char *p, *iter = NULL;
qs = dsgw_ch_strdup( qs );
for ( p = ldap_utf8strtok_r( qs, "&", &iter ); p != NULL;
p = ldap_utf8strtok_r( NULL, "&", &iter )) {
/*
* Get the conf file name. It'll be translated
* into /dsgw/context/CONTEXT.conf if
* CONTEXT is all alphanumeric (no slahes,
* or dots). CONTEXT is passed into the cgi.
* if context=CONTEXT is not there, or PATH_INFO
* was used, then use dsgw.conf
*/
if ( !strncasecmp( p, "context=", 8 )) {
context = dsgw_ch_strdup( p + 8 );
dsgw_form_unescape( context );
continue;
}
}
free( qs ); qs = NULL;
}
reqmethod = dsgw_init( argc, argv, DSGW_METHOD_GET );
authck = dsgw_get_auth_cookie();
if ( authck == NULL ) {
/* No cookie. Generate an informational message. */
generate_message( CKEXP_SUCCESS );
free( authck );
exit( 0 );
}
/* Remove the cookie from the cookie database */
rc = dsgw_delcookie( authck );
/* Generate a cookie header with the cookie set to [unauthenticated] */
expck = dsgw_ch_malloc( strlen( DSGW_CKHDR ) + strlen( DSGW_AUTHCKNAME ) +
strlen( DSGW_UNAUTHSTR ) + strlen( "=; path=/" ) + 2 );
sprintf( expck, "%s%s=%s; path=/", DSGW_CKHDR, DSGW_AUTHCKNAME, DSGW_UNAUTHSTR );
dsgw_add_header( expck );
generate_message( CKEXP_SUCCESS );
free( authck );
free( expck );
exit( 0 );
}
/*
* It's quite likely that there will be more than one cookie in the
* Cookie: header. See if we've got an authentication cookie, and if
* so, parse it out and return a pointer to it. If no auth cookie
* is present, return NULL.
*/
char *
get_auth_cookie( char *cookie )
{
char *p, *e;
if ( cookie == NULL ) {
return NULL;
}
if (( p = strstr( cookie, DSGW_AUTHCKNAME )) == NULL ) {
return NULL;
}
if (( e = strchr( p, ';' )) != NULL ) {
*e = '\0';
}
return p;
}
void
generate_message( int type )
{
dsgw_send_header();
dsgw_emits( "<HTML>" );
dsgw_head_begin();
dsgw_emits( "\n<TITLE>" );
if ( type == CKEXP_SUCCESS ) {
dsgw_emits( "Success" );
} else if ( type == CKEXP_FAILURE ) {
dsgw_emits( "Error" );
}
dsgw_emits( "</TITLE>\n</HEAD>\n" );
dsgw_emitf( "<BODY %s>\n", dsgw_html_body_colors );
dsgw_emitf( "<CENTER>\n"
"<FONT SIZE=+2>\n"
"%s"
"</FONT>\n"
"</CENTER>\n"
"<P>\n"
"%s",
XP_GetClientStr( DBT_Success_ ),
XP_GetClientStr( DBT_YouAreNoLongerAuthenticated_ ));
if ( type != CKEXP_SUCCESS ) {
/*
* Something went wrong, so generate some JavaScript to
* discard the cookie.
*/
dsgw_emits( "<SCRIPT LANGUAGE=\"JavaScript\">\n" );
dsgw_emitf( "document.cookie = '%s=%s; path=/';\n", DSGW_AUTHCKNAME,
DSGW_UNAUTHSTR );
dsgw_emits( "</SCRIPT>\n" );
}
dsgw_form_begin (NULL, NULL);
dsgw_emits( "\n"
"<TABLE BORDER=2 WIDTH=100%>\n"
"<TR>\n"
"<TD ALIGN=CENTER WIDTH=50%>\n");
dsgw_emitf(
"<INPUT TYPE=BUTTON VALUE=\"%s\"", XP_GetClientStr( DBT_GoBack_ ));
dsgw_emits(
" onClick=\"window.location.href=");
dsgw_quote_emitf(QUOTATION_JAVASCRIPT, "auth?context=%s", context);
dsgw_emits(";\"></TD>\n"
"<TD ALIGN=CENTER WIDTH=50%>\n" );
dsgw_emit_helpbutton( "UNAUTH" );
dsgw_emits( "</TABLE></FORM>\n"
"</BODY></HTML>\n" );
}
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