Subversion Repositories planix.SVN

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

int
vtputstring(Packet *p, char *s)
{
        uchar buf[2];
        int n;

        if(s == nil){
                werrstr("null string in packet");
                return -1;
        }
        n = strlen(s);
        if(n > VtMaxStringSize){
                werrstr("string too long in packet");
                return -1;
        }
        buf[0] = n>>8;
        buf[1] = n;
        packetappend(p, buf, 2);
        packetappend(p, (uchar*)s, n);
        return 0;
}

int
vtgetstring(Packet *p, char **ps)
{
        uchar buf[2];
        int n;
        char *s;

        if(packetconsume(p, buf, 2) < 0)
                return -1;
        n = (buf[0]<<8) + buf[1];
        if(n > VtMaxStringSize) {
                werrstr("string too long in packet");
                return -1;
        }
        s = vtmalloc(n+1);
        if(packetconsume(p, (uchar*)s, n) < 0){
                vtfree(s);
                return -1;
        }
        s[n] = 0;
        *ps = s;
        return 0;
}