Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <bio.h>
#include <auth.h>
#include "imap4d.h"

/*
 *  query the connection server
 */
char*
csquery(char *attr, char *val, char *rattr)
{
        char token[64+4];
        char buf[256], *p, *sp;
        int fd, n;

        if(val == nil || val[0] == 0)
                return nil;
        fd = open("/net/cs", ORDWR);
        if(fd < 0)
                return nil;
        fprint(fd, "!%s=%s", attr, val);
        seek(fd, 0, 0);
        snprint(token, sizeof(token), "%s=", rattr);
        for(;;){
                n = read(fd, buf, sizeof(buf)-1);
                if(n <= 0)
                        break;
                buf[n] = 0;
                p = strstr(buf, token);
                if(p != nil && (p == buf || *(p-1) == 0)){
                        close(fd);
                        sp = strchr(p, ' ');
                        if(sp)
                                *sp = 0;
                        p = strchr(p, '=');
                        if(p == nil)
                                return nil;
                        return strdup(p+1);
                }
        }
        close(fd);
        return nil;
}