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WebSVN – planix.SVN – Blame – /os/branches/feature_posix/sys/src/cmd/unix/drawterm/libauth/auth_getuserpasswd.c – Rev 2

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#include <u.h>
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#include <libc.h>
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#include <auth.h>
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#include "authlocal.h"
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enum {
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	ARgiveup = 100,
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};
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static int
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dorpc(AuthRpc *rpc, char *verb, char *val, int len, AuthGetkey *getkey)
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{
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	int ret;
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	for(;;){
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		if((ret = auth_rpc(rpc, verb, val, len)) != ARneedkey && ret != ARbadkey)
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			return ret;
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		if(getkey == 0)
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			return ARgiveup;	/* don't know how */
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		if((*getkey)(rpc->arg) < 0)
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			return ARgiveup;	/* user punted */
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	}
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}
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UserPasswd*
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auth_getuserpasswd(AuthGetkey *getkey, char *fmt, ...)
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{
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	AuthRpc *rpc;
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	char *f[3], *p, *params;
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	int fd;
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	va_list arg;
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	UserPasswd *up;
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	up = nil;
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	rpc = nil;
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	params = nil;
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	fd = open("/mnt/factotum/rpc", ORDWR);
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	if(fd < 0)
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		goto out;
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	rpc = auth_allocrpc(fd);
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	if(rpc == nil)
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		goto out;
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	quotefmtinstall();	/* just in case */
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	va_start(arg, fmt);
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	params = vsmprint(fmt, arg);
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	va_end(arg);
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	if(params == nil)
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		goto out;
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	if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok
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	|| dorpc(rpc, "read", nil, 0, getkey) != ARok)
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		goto out;
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	rpc->arg[rpc->narg] = '\0';
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	if(tokenize(rpc->arg, f, 2) != 2){
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		werrstr("bad answer from factotum");
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		goto out;
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	}
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	up = malloc(sizeof(*up)+rpc->narg+1);
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	if(up == nil)
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		goto out;
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	p = (char*)&up[1];
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	strcpy(p, f[0]);
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	up->user = p;
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	p += strlen(p)+1;
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	strcpy(p, f[1]);
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	up->passwd = p;
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out:
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	free(params);
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	auth_freerpc(rpc);
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	close(fd);
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	return up;
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}