Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <auth.h>
#include "authlocal.h"

enum {
        ARgiveup = 100,
};

static int
dorpc(AuthRpc *rpc, char *verb, char *val, int len, AuthGetkey *getkey)
{
        int ret;

        for(;;){
                if((ret = auth_rpc(rpc, verb, val, len)) != ARneedkey && ret != ARbadkey)
                        return ret;
                if(getkey == nil)
                        return ARgiveup;        /* don't know how */
                if((*getkey)(rpc->arg) < 0)
                        return ARgiveup;        /* user punted */
        }
}

UserPasswd*
auth_getuserpasswd(AuthGetkey *getkey, char *fmt, ...)
{
        AuthRpc *rpc;
        char *f[3], *p, *params;
        int fd;
        va_list arg;
        UserPasswd *up;

        up = nil;
        rpc = nil;
        params = nil;

        fd = open("/mnt/factotum/rpc", ORDWR);
        if(fd < 0)
                goto out;
        rpc = auth_allocrpc(fd);
        if(rpc == nil)
                goto out;
        quotefmtinstall();      /* just in case */
        va_start(arg, fmt);
        params = vsmprint(fmt, arg);
        va_end(arg);
        if(params == nil)
                goto out;

        if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok
        || dorpc(rpc, "read", nil, 0, getkey) != ARok)
                goto out;

        rpc->arg[rpc->narg] = '\0';
        if(tokenize(rpc->arg, f, 2) != 2){
                werrstr("bad answer from factotum");
                goto out;
        }
        up = malloc(sizeof(*up)+rpc->narg+1);
        if(up == nil)
                goto out;
        p = (char*)&up[1];
        strcpy(p, f[0]);
        up->user = p;
        p += strlen(p)+1;
        strcpy(p, f[1]);
        up->passwd = p;

out:
        free(params);
        auth_freerpc(rpc);
        close(fd);
        return up;
}