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* on public domain software written at the National Center for
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#include "httpd.h"
#include "http_config.h"
module referer_log_module;
static int xfer_flags = ( O_WRONLY | O_APPEND | O_CREAT );
#ifdef __EMX__
/* OS/2 lacks support for users and groups */
static mode_t xfer_mode = ( S_IREAD | S_IWRITE );
#else
static mode_t xfer_mode = ( S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
#endif
typedef struct {
char *fname;
int referer_fd;
array_header *referer_ignore_list;
} referer_log_state;
void *make_referer_log_state (pool *p, server_rec *s)
{
referer_log_state *cls =
(referer_log_state *)palloc (p, sizeof (referer_log_state));
cls->fname = "";
cls->referer_fd = -1;
cls->referer_ignore_list = make_array(p, 1, sizeof(char *));
return (void *)cls;
}
const char *set_referer_log (cmd_parms *parms, void *dummy, char *arg)
{
referer_log_state *cls = get_module_config (parms->server->module_config,
&referer_log_module);
cls->fname = arg;
return NULL;
}
const char *add_referer_ignore (cmd_parms *parms, void *dummy, char *arg)
{
char **addme;
referer_log_state *cls = get_module_config (parms->server->module_config,
&referer_log_module);
addme = push_array(cls->referer_ignore_list);
*addme = pstrdup(cls->referer_ignore_list->pool, arg);
return NULL;
}
command_rec referer_log_cmds[] = {
{ "RefererLog", set_referer_log, NULL, RSRC_CONF, TAKE1,
"the filename of the referer log" },
{ "RefererIgnore", add_referer_ignore, NULL, RSRC_CONF, ITERATE,
"referer hostnames to ignore" },
{ NULL }
};
static int referer_log_child (void *cmd)
{
/* Child process code for 'RefererLog "|..."';
* may want a common framework for this, since I expect it will
* be common for other foo-loggers to want this sort of thing...
*/
int child_pid = 1;
cleanup_for_exec();
signal (SIGHUP, SIG_IGN);
#if defined(WIN32)
/* For OS/2 we need to use a '/' */
child_pid = spawnl (SHELL_PATH, SHELL_PATH, "/c", (char *)cmd, NULL);
return(child_pid);
#elif defined(__EMX__)
/* For OS/2 we need to use a '/' */
execl (SHELL_PATH, SHELL_PATH, "/c", (char *)cmd, NULL);
#else
execl (SHELL_PATH, SHELL_PATH, "-c", (char *)cmd, NULL);
#endif
perror ("execl");
fprintf (stderr, "Exec of shell for logging failed!!!\n");
return(child_pid);
}
void open_referer_log (server_rec *s, pool *p)
{
referer_log_state *cls = get_module_config (s->module_config,
&referer_log_module);
char *fname = server_root_relative (p, cls->fname);
if (cls->referer_fd > 0) return; /* virtual log shared w/main server */
if (*cls->fname == '|') {
FILE *dummy;
if (!spawn_child (p, referer_log_child, (void *)(cls->fname+1),
kill_after_timeout, &dummy, NULL)) {
perror ("spawn_child");
fprintf (stderr, "Couldn't fork child for RefererLog process\n");
exit (1);
}
cls->referer_fd = fileno (dummy);
}
else if(*cls->fname != '\0') {
if((cls->referer_fd = popenf(p, fname, xfer_flags, xfer_mode)) < 0) {
perror("open");
fprintf(stderr,"httpd: could not open referer log file %s.\n", fname);
exit(1);
}
}
}
void init_referer_log (server_rec *s, pool *p)
{
for (; s; s = s->next) open_referer_log (s, p);
}
int referer_log_transaction(request_rec *orig)
{
char **ptrptr, **ptrptr2;
referer_log_state *cls = get_module_config (orig->server->module_config,
&referer_log_module);
char *str;
char *referer;
request_rec *r;
if(cls->referer_fd <0)
return OK;
for (r = orig; r->next; r = r->next)
continue;
if (*cls->fname == '\0') /* Don't log referer */
return DECLINED;
referer = table_get(orig->headers_in, "Referer");
if(referer != NULL)
{
/* The following is an upsetting mess of pointers, I'm sorry
Anyone with the motiviation and/or the time should feel free
to make this cleaner... */
ptrptr2 = (char **) (cls->referer_ignore_list->elts +
(cls->referer_ignore_list->nelts *
cls->referer_ignore_list->elt_size));
/* Go through each element of the ignore list and compare it to the
referer_host. If we get a match, return without logging */
for(ptrptr = (char **) cls->referer_ignore_list->elts;
ptrptr < ptrptr2;
ptrptr = (char **)((char *)ptrptr + cls->referer_ignore_list->elt_size))
{
if(strstr(referer, *ptrptr))
return OK;
}
str = pstrcat(orig->pool, referer, " -> ", r->uri, "\n", NULL);
write(cls->referer_fd, str, strlen(str));
}
return OK;
}
module referer_log_module = {
STANDARD_MODULE_STUFF,
init_referer_log, /* initializer */
NULL, /* create per-dir config */
NULL, /* merge per-dir config */
make_referer_log_state, /* server config */
NULL, /* merge server config */
referer_log_cmds, /* command table */
NULL, /* handlers */
NULL, /* filename translation */
NULL, /* check_user_id */
NULL, /* check auth */
NULL, /* check access */
NULL, /* type_checker */
NULL, /* fixups */
referer_log_transaction, /* logger */
NULL, /* header parser */
NULL /* child_init */
};
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.