135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/* Copyright (C) Charles Forsyth
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* See /doc/license/NOTICE.Plan9-9k.txt for details about the licensing.
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*/
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/* Portions of this file are Copyright (C) 2015-2018 Giacomo Tesio <giacomo@tesio.it>
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* See /doc/license/gpl-2.0.txt for details about the licensing.
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*/
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/* Portions of this file are Copyright (C) 9front's team.
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* See /doc/license/9front-mit for details about the licensing.
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* See http://code.9front.org/hg/plan9front/ for a list of authors.
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*/
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#include "u.h"
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#include "../port/lib.h"
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#include "mem.h"
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#include "dat.h"
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#include "fns.h"
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#include "../port/error.h"
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#include "../ip/ip.h"
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typedef struct DS DS;
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static Chan* call(char*, char*, DS*);
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static void _dial_string_parse(char*, DS*);
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enum
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{
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Maxstring= 128,
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};
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struct DS
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{
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char buf[Maxstring]; /* dist string */
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char *netdir;
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char *proto;
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char *rem;
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char *local; /* other args */
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char *dir;
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Chan **ctlp;
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};
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/*
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* the dialstring is of the form '[/net/]proto!dest'
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*/
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Chan*
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chandial(char *dest, char *local, char *dir, Chan **ctlp)
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{
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DS ds;
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char clone[Maxpath];
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ds.local = local;
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ds.dir = dir;
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ds.ctlp = ctlp;
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_dial_string_parse(dest, &ds);
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if(ds.netdir == 0)
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ds.netdir = "/net";
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/* no connection server, don't translate */
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jehanne_snprint(clone, sizeof(clone), "%s/%s/clone", ds.netdir, ds.proto);
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return call(clone, ds.rem, &ds);
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}
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static Chan*
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call(char *clone, char *dest, DS *ds)
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{
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int n;
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Chan *dchan, *cchan;
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char name[Maxpath], data[Maxpath], *p;
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cchan = namec(clone, Aopen, ORDWR, 0);
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/* get directory name */
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if(waserror()){
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cclose(cchan);
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nexterror();
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}
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n = cchan->dev->read(cchan, name, sizeof(name)-1, 0);
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name[n] = 0;
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for(p = name; *p == ' '; p++)
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;
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jehanne_sprint(name, "%lud", jehanne_strtoul(p, 0, 0));
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p = jehanne_strrchr(clone, '/');
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*p = 0;
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if(ds->dir)
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jehanne_snprint(ds->dir, Maxpath, "%s/%s", clone, name);
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jehanne_snprint(data, sizeof(data), "%s/%s/data", clone, name);
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/* connect */
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if(ds->local)
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jehanne_snprint(name, sizeof(name), "connect %s %s", dest, ds->local);
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else
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jehanne_snprint(name, sizeof(name), "connect %s", dest);
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cchan->dev->write(cchan, name, jehanne_strlen(name), 0);
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/* open data connection */
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dchan = namec(data, Aopen, ORDWR, 0);
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if(ds->ctlp)
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*ds->ctlp = cchan;
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else
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cclose(cchan);
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poperror();
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return dchan;
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}
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/*
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* parse a dial string
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*/
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static void
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_dial_string_parse(char *str, DS *ds)
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{
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char *p, *p2;
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jehanne_strncpy(ds->buf, str, Maxstring);
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ds->buf[Maxstring-1] = 0;
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p = jehanne_strchr(ds->buf, '!');
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if(p == 0) {
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ds->netdir = 0;
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ds->proto = "net";
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ds->rem = ds->buf;
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} else {
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if(*ds->buf != '/' && *ds->buf != '#'){
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ds->netdir = 0;
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ds->proto = ds->buf;
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} else {
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for(p2 = p; *p2 != '/'; p2--)
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;
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*p2++ = 0;
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ds->netdir = ds->buf;
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ds->proto = p2;
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}
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*p = 0;
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ds->rem = p + 1;
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}
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}
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