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/* Copyright ©2007-2008 Kris Maglione <fbsdaemon@gmail.com>
* See LICENSE file for license details.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "ixp_local.h"
enum {
SByte = 1,
SWord = 2,
SDWord = 4,
SQWord = 8,
};
#define SString(s) (SWord + strlen(s))
enum {
SQid = SByte + SDWord + SQWord,
};
IxpMsg
ixp_message(char *data, uint length, uint mode) {
IxpMsg m;
m.data = data;
m.pos = data;
m.end = data + length;
m.size = length;
m.mode = mode;
return m;
}
void
ixp_freestat(Stat *s) {
free(s->name);
free(s->uid);
free(s->gid);
free(s->muid);
s->name = s->uid = s->gid = s->muid = nil;
}
void
ixp_freefcall(Fcall *fcall) {
switch(fcall->hdr.type) {
case RStat:
free(fcall->rstat.stat);
fcall->rstat.stat = nil;
break;
case RRead:
free(fcall->rread.data);
fcall->rread.data = nil;
break;
case RVersion:
free(fcall->version.version);
fcall->version.version = nil;
break;
case RError:
free(fcall->error.ename);
fcall->error.ename = nil;
break;
}
}
ushort
ixp_sizeof_stat(Stat * stat) {
return SWord /* size */
+ SWord /* type */
+ SDWord /* dev */
+ SQid /* qid */
+ 3 * SDWord /* mode, atime, mtime */
+ SQWord /* length */
+ SString(stat->name)
+ SString(stat->uid)
+ SString(stat->gid)
+ SString(stat->muid);
}
void
ixp_pfcall(IxpMsg *msg, Fcall *fcall) {
ixp_pu8(msg, &fcall->hdr.type);
ixp_pu16(msg, &fcall->hdr.tag);
switch (fcall->hdr.type) {
case TVersion:
case RVersion:
ixp_pu32(msg, &fcall->version.msize);
ixp_pstring(msg, &fcall->version.version);
break;
case TAuth:
ixp_pu32(msg, &fcall->tauth.afid);
ixp_pstring(msg, &fcall->tauth.uname);
ixp_pstring(msg, &fcall->tauth.aname);
break;
case RAuth:
ixp_pqid(msg, &fcall->rauth.aqid);
break;
case RAttach:
ixp_pqid(msg, &fcall->rattach.qid);
break;
case TAttach:
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pu32(msg, &fcall->tattach.afid);
ixp_pstring(msg, &fcall->tattach.uname);
ixp_pstring(msg, &fcall->tattach.aname);
break;
case RError:
ixp_pstring(msg, &fcall->error.ename);
break;
case TFlush:
ixp_pu16(msg, &fcall->tflush.oldtag);
break;
case TWalk:
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pu32(msg, &fcall->twalk.newfid);
ixp_pstrings(msg, &fcall->twalk.nwname, fcall->twalk.wname);
break;
case RWalk:
ixp_pqids(msg, &fcall->rwalk.nwqid, fcall->rwalk.wqid);
break;
case TOpen:
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pu8(msg, &fcall->topen.mode);
break;
case ROpen:
case RCreate:
ixp_pqid(msg, &fcall->ropen.qid);
ixp_pu32(msg, &fcall->ropen.iounit);
break;
case TCreate:
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pstring(msg, &fcall->tcreate.name);
ixp_pu32(msg, &fcall->tcreate.perm);
ixp_pu8(msg, &fcall->tcreate.mode);
break;
case TRead:
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pu64(msg, &fcall->tread.offset);
ixp_pu32(msg, &fcall->tread.count);
break;
case RRead:
ixp_pu32(msg, &fcall->rread.count);
ixp_pdata(msg, &fcall->rread.data, fcall->rread.count);
break;
case TWrite:
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pu64(msg, &fcall->twrite.offset);
ixp_pu32(msg, &fcall->twrite.count);
ixp_pdata(msg, &fcall->twrite.data, fcall->twrite.count);
break;
case RWrite:
ixp_pu32(msg, &fcall->rwrite.count);
break;
case TClunk:
case TRemove:
case TStat:
ixp_pu32(msg, &fcall->hdr.fid);
break;
case RStat:
ixp_pu16(msg, &fcall->rstat.nstat);
ixp_pdata(msg, (char**)&fcall->rstat.stat, fcall->rstat.nstat);
break;
case TWStat: {
ushort size;
ixp_pu32(msg, &fcall->hdr.fid);
ixp_pu16(msg, &size);
ixp_pstat(msg, &fcall->twstat.stat);
break;
}
}
}
uint
ixp_fcall2msg(IxpMsg *msg, Fcall *fcall) {
ulong size;
msg->end = msg->data + msg->size;
msg->pos = msg->data + SDWord;
msg->mode = MsgPack;
ixp_pfcall(msg, fcall);
if(msg->pos > msg->end)
return 0;
msg->end = msg->pos;
size = msg->end - msg->data;
msg->pos = msg->data;
ixp_pu32(msg, &size);
msg->pos = msg->data;
return size;
}
uint
ixp_msg2fcall(IxpMsg *msg, Fcall *fcall) {
msg->pos = msg->data + SDWord;
msg->mode = MsgUnpack;
ixp_pfcall(msg, fcall);
if(msg->pos > msg->end)
return 0;
return msg->pos - msg->data;
}
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