Commit 3e32370a authored by Daniel P. Berrangé's avatar Daniel P. Berrangé Committed by Paolo Bonzini
Browse files

sockets: fix parsing of ipv4/ipv6 opts in parse_socket_addr 



The inet_parse() function looks for 'ipv4' and 'ipv6' flags, but only
treats them as bare bool flags. The normal QemuOpts parsing would allow
on/off values to be set too.

This updates inet_parse() so that its handling of the 'ipv4' and 'ipv6'
flags matches that done by QemuOpts.

This impacts the NBD block driver parsing the legacy filename syntax and
the migration code parsing the socket scheme.

Signed-off-by: default avatarDaniel P. Berrange <berrange@redhat.com>
Message-Id: <20180125171412.21627-1-berrange@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b1cef6d0

util/qemu-sockets.c

+40 −4
Original line number Diff line number Diff line
@@ -554,6 +554,33 @@ err: 
}



/* compatibility wrapper */

static int inet_parse_flag(const char *flagname, const char *optstr, bool *val,

                           Error **errp)

{

    char *end;

    size_t len;



    end = strstr(optstr, ",");

    if (end) {

        if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */

            error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr);

            return -1;

        }

        len = end - optstr;

    } else {

        len = strlen(optstr);

    }

    if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) {

        *val = true;

    } else if (len == 4 && strncmp(optstr, "=off", len) == 0) {

        *val = false;

    } else {

        error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr);

        return -1;

    }

    return 0;

}



int inet_parse(InetSocketAddress *addr, const char *str, Error **errp)

{

    const char *optstr, *h;
@@ -561,6 +588,7 @@ int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) 
    char port[33];

    int to;

    int pos;

    char *begin;



    memset(addr, 0, sizeof(*addr));
@@ -602,11 +630,19 @@ int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) 
        addr->has_to = true;

        addr->to = to;

    }

    if (strstr(optstr, ",ipv4")) {

        addr->ipv4 = addr->has_ipv4 = true;

    begin = strstr(optstr, ",ipv4");

    if (begin) {

        if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) {

            return -1;

        }

        addr->has_ipv4 = true;

    }

    begin = strstr(optstr, ",ipv6");

    if (begin) {

        if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) {

            return -1;

        }

    if (strstr(optstr, ",ipv6")) {

        addr->ipv6 = addr->has_ipv6 = true;

        addr->has_ipv6 = true;

    }

    return 0;

}