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Celestin Apprentice 4
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Apache 1.0
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mod_cookies.c
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1995-12-04
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/* ====================================================================
* Copyright (c) 1995 The Apache Group. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission.
*
* 5. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR
* IT'S CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Group and was originally based
* on public domain software written at the National Center for
* Supercomputing Applications, University of Illinois, Urbana-Champaign.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
/* Netscape Cookies Fixup
*
* This is a module for Shambhala for handling Netscape cookies.
*
* On each request look for a Cookie: header.
* If we don't find one then send a Set-Cookie: header out with the request
* Future requests from the same client should keep the same Cookie line.
* Using the cookie log you can track the path a user takes through your
* files.
*
* The cookie and request are logged to a file. Use the directive
* "CookieLog somefilename" in one of the config files to enable.
*
* Netscape 1.0+ is the only known browser to support cookies. This
* code is lazy and doesn't bother creating cookies for other browsers.
*
* Mark Cox, mark@telescope.org, 6 July 95
*/
#include "httpd.h"
#include "http_config.h"
#include <sys/time.h>
module cookies_module;
/* Now we have to generate something that is going to be
* pretty unique. We can base it on the pid, time, hostip */
void make_cookie(request_rec *r)
{
struct timeval tv;
char new_cookie[100]; /* blurgh */
char *dot;
char *rname = pstrdup(r->pool,r->connection->remote_name);
struct timezone tz = { 0 , 0 };
if ((dot = strchr(rname,'.'))) *dot='\0'; /* First bit of hostname */
gettimeofday(&tv, &tz);
sprintf(new_cookie,"s=%s%d%ld%d; path=/",
rname,
(int)getpid(),
(long)tv.tv_sec, (int)tv.tv_usec/1000 );
table_set(r->headers_out,"Set-Cookie",new_cookie);
return;
}
int spot_cookie(request_rec *r)
{
char *cookie, *agent;
if (!(agent = table_get(r->headers_in,"User-Agent")))
return DECLINED; /* No user-agent = No cookie */
if (strncmp(agent,"Mozilla",7)) /* Don't bother creating a cookie */
return DECLINED; /* unless browser is Netscape fudge */
if ((cookie = table_get (r->headers_in, "Cookie")))
return DECLINED; /* Theres already a cookie, no new one */
make_cookie(r);
return OK; /* We set our cookie */
}
static int cookie_flags = ( O_WRONLY | O_APPEND | O_CREAT );
static mode_t cookie_mode = ( S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
typedef struct {
char *fname;
int log_fd;
} cookie_log_state;
void *make_cookie_log_state (pool *p, server_rec *s)
{
cookie_log_state *cls =
(cookie_log_state *)palloc (p, sizeof (cookie_log_state));
cls->fname = "";
cls->log_fd = -1;
return (void *)cls;
}
char *set_cookie_log (cmd_parms *parms, void *dummy, char *arg)
{
cookie_log_state *cls = get_module_config (parms->server->module_config,
&cookies_module);
cls->fname = arg;
return NULL;
}
command_rec cookie_log_cmds[] = {
{ "CookieLog", set_cookie_log, NULL, RSRC_CONF, TAKE1,
"the filename of the cookie log" },
{ NULL }
};
void open_cookie_log (server_rec *s, pool *p)
{
cookie_log_state *cls = get_module_config (s->module_config,
&cookies_module);
char *fname = server_root_relative (p, cls->fname);
if (cls->log_fd > 0) return;
cls->log_fd = popenf(p, fname, cookie_flags, cookie_mode);
}
void init_cookie_log (server_rec *s, pool *p)
{
for (; s; s = s->next) open_cookie_log (s, p);
}
int cookie_log_transaction(request_rec *orig)
{
cookie_log_state *cls = get_module_config (orig->server->module_config,
&cookies_module);
char str[HUGE_STRING_LEN];
long timz;
struct tm *t;
char tstr[MAX_STRING_LEN],sign;
request_rec *r;
char *cookie;
for (r = orig; r->next; r = r->next)
continue;
if ((cls->log_fd)<0) /* Don't log cookies */
return DECLINED;
if (!(cookie = table_get (r->headers_in, "Cookie")))
return DECLINED; /* Theres no cookie, don't bother logging */
if (strncmp(cookie,"s=",2)) /* Only log cookies we generated! */
return DECLINED;
t = get_gmtoff(&timz);
sign = (timz < 0 ? '-' : '+');
if(timz < 0)
timz = -timz;
strftime(tstr,MAX_STRING_LEN,"%d/%b/%Y:%H:%M:%S",t);
sprintf(str,"%s \"%s\" [%s %c%02ld%02ld] ",
cookie+2, /* Ignore s= */
orig->the_request,
tstr,
sign,
timz/3600,
timz%3600);
if (r->status != -1)
sprintf(str,"%s%d\n",str,r->status);
else
strcat(str,"-\n");
write(cls->log_fd, str, strlen(str));
return OK;
}
module cookies_module = {
STANDARD_MODULE_STUFF,
init_cookie_log, /* initializer */
NULL, /* dir config creater */
NULL, /* dir merger --- default is to override */
make_cookie_log_state, /* server config */
NULL, /* merge server configs */
cookie_log_cmds, /* command table */
NULL, /* handlers */
NULL, /* filename translation */
NULL, /* check_user_id */
NULL, /* check auth */
NULL, /* check access */
NULL, /* type_checker */
spot_cookie, /* fixups */
cookie_log_transaction, /* logger */
};