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// This is a roxen module. Copyright 1996 - 1998, Idonex AB.
constant cvs_version = "$Id: gopher.pike,v 1.9 1998/05/20 15:54:29 grubba Exp $";
// Gopher protocol module
inherit "protocols/http"; /* For the variables and such.. */
#include <config.h>
#include <module.h>
import Array;
inline static private string extract_title(string from)
{
if(!from) return "-- Error: No file --";
if(!((sscanf(from, "%*s<title>%s</title>", from)==2)
|| (sscanf(from, "%*s<h1>%s</h1>", from)==2)
|| (sscanf(from, "%*s<h2>%s</h2>", from)==2)
|| (sscanf(from, "%*s<h3>%s</h3>", from)==2)
|| (sscanf(from, "%*s<font size=+3>%s</font>", from)==2)))
return 0;
while(sscanf(from, "<%*s>%s</%*s>", from));
return from;
}
static private string encode_direntry(string file, string host, int port)
{
string title;
if(!file) return 0;
string type = conf->type_from_filename(file) || "text/plain";
/* 0 == file
1 == dir
(7== search)
9 == binary
g == gif
I == other image
*/
/* Format: <type><title>[tab]<filename>[tab]<server>[tab]<port> */
if(file[-1] == '/') {
type="1";
title = (file/"/")[-2];
} else if(type == "text/html") {
title = extract_title(conf->try_get_file(file, this_object())) ||
(file/"/")[-1];
type = "0";
} else if(!search(type, "text/")) {
type = "0";
title = (file/"/")[-1];
} else if(!search(type, "image/gif")) {
type = "g";
title = (file/"/")[-1];
} else if(!search(type, "image/")) {
type = "I";
title = (file/"/")[-1];
} else {
type = "9";
title = (file/"/")[-1];
}
return type+title+"\t"+file+"\t"+host+"\t"+port;
}
mapping generate_directory()
{
array mydir;
string res;
if(res=cache_lookup(conf->name+":gopherdir", not_query))
return ([ "type":"text/gopherdir", "data":res ]);
mydir = conf->find_dir(not_query, this_object());
if(!mydir)
return ([ "type":"text/gopherdir", "data":"0No such dir.\n" ]);
res = sort(map(map(mydir, lambda(string s, string f) {
array st;
f += s;
if(st = conf->stat_file(f, this_object()))
{
if(st[1] < 0) return f + "/";
return f;
}
return 0;
}, not_query), encode_direntry,
(my_fd->query_address(1)/" ")[0], (my_fd->query_address(1)/" ")[1]))*"\r\n";
res += "\r\n";
cache_set(conf->name+":gopherdir", not_query, res);
return ([ "type":"text/gopherdir", "data":res ]);
}
void got_data(mixed fooid, string s)
{
array err;
mapping file;
time = _time();
remove_call_out(do_timeout);
// FIXME: Improve the request parsing.
not_query = (s-"\r")-"\n";
if(!strlen(not_query))
not_query = "/";
#ifdef GOPHER_DEBUG
roxen_perror(sprintf("GOPHER: got_data(X, %O) => %O\n", s, not_query));
#endif /* GOPHER_DEBUG */
remoteaddr = my_fd->query_address();
supports = (< "gopher", "images", "tables", >);
prot = "GOPHER";
method = "GET";
conf->received += strlen(s);
if(not_query[-1] == '/')
file = generate_directory();
else if(err = catch(file = conf->get_file(this_object()))) {
internal_error(err);
file = this_object()->file;
}
if(!file)
{
end("0No such file, bugger.\r\n");
return 0;
}
if(!file->error)
file->error=200;
if(!file->len)
{
if(file->data) file->len = strlen(file->data);
if(file->file) file->len += file->file->stat()[1];
}
if(file->len > 0) conf->sent+=file->len;
conf->log(file, this_object());
if(file->data) send(file->data);
if(file->file) send(file->file);
if(stringp(file->type) && file->type[0..3] == "text")
{
send(".\r\n");
}
pipe->set_done_callback(end);
pipe->output(my_fd);
return;
}
#ifdef GOPHER_DEBUG
void gopher_trace_enter(string s, mixed foo)
{
roxen_perror("GOPHER ENTER:"+s+"\n");
}
void gopher_trace_leave(string s)
{
roxen_perror("GOPHER LEAVE:"+s+"\n");
}
#endif /* GOPHER_DEBUG */
void create(object f, object c)
{
if(f)
{
::create(f, c);
my_fd->set_nonblocking(got_data, lambda(){}, end);
#ifdef GOPHER_DEBUG
misc->trace_enter = gopher_trace_enter;
misc->trace_leave = gopher_trace_leave;
#endif /* GOPHER_DEBUG */
}
}
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