Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <authsrv.h>

static char *pbmsg = "AS protocol botch";

int
_asrdresp(int fd, char *buf, int len)
{
        int n;
        char error[64];

        if(read(fd, buf, 1) != 1){
                werrstr(pbmsg);
                return -1;
        }

        n = len;
        switch(buf[0]){
        case AuthOK:
                if(readn(fd, buf, len) != len){
                        werrstr(pbmsg);
                        return -1;
                }
                break;
        case AuthErr:
                if(readn(fd, error, sizeof error) != sizeof error){
                        werrstr(pbmsg);
                        return -1;
                }
                error[sizeof error-1] = '\0';
                werrstr("remote: %s", error);
                return -1;
        case AuthOKvar:
                if(readn(fd, error, 5) != 5){
                        werrstr(pbmsg);
                        return -1;
                }
                error[5] = 0;
                n = atoi(error);
                if(n <= 0 || n > len){
                        werrstr(pbmsg);
                        return -1;
                }
                memset(buf, 0, len);
                if(readn(fd, buf, n) != n){
                        werrstr(pbmsg);
                        return -1;
                }
                break;
        default:
                werrstr(pbmsg);
                return -1;
        }
        return n;
}