On Mon, 2012-08-13 at 10:06 -0700, K. Y. Srinivasan wrote:
> In preparation for making kvp_get_ip_address() more generic, factor out
> the code for handling IP addresses.
>
> Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> Reviewed-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
> Reviewed-by: Olaf Hering <olaf@xxxxxxxxx>
> Reviewed-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
I looked at your last patch set, so in a sense these have been reviewed
by me. But the 'Reviewed-by' line in a commit message means the
reviewer thinks it's OK; the reviewer must say that, and I didn't.
Ben.
> ---
> tools/hv/hv_kvp_daemon.c | 94 ++++++++++++++++++++-------------------------
> 1 files changed, 42 insertions(+), 52 deletions(-)
>
> diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
> index 3af37f0..3dc989f 100644
> --- a/tools/hv/hv_kvp_daemon.c
> +++ b/tools/hv/hv_kvp_daemon.c
> @@ -491,17 +491,50 @@ done:
> return;
> }
>
> +static int kvp_process_ip_address(void *addrp,
> + int family, char *buffer,
> + int length, int *offset)
> +{
> + struct sockaddr_in *addr;
> + struct sockaddr_in6 *addr6;
> + int addr_length;
> + char tmp[50];
> + const char *str;
> +
> + if (family == AF_INET) {
> + addr = (struct sockaddr_in *)addrp;
> + str = inet_ntop(family, &addr->sin_addr, tmp, 50);
> + addr_length = INET_ADDRSTRLEN;
> + } else {
> + addr6 = (struct sockaddr_in6 *)addrp;
> + str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50);
> + addr_length = INET6_ADDRSTRLEN;
> + }
> +
> + if ((length - *offset) < addr_length + 1)
> + return 1;
> + if (str == NULL) {
> + strcpy(buffer, "inet_ntop failed\n");
> + return 1;
> + }
> + if (*offset == 0)
> + strcpy(buffer, tmp);
> + else
> + strcat(buffer, tmp);
> + strcat(buffer, ";");
> +
> + *offset += strlen(str) + 1;
> + return 0;
> +}
> +
> static int
> kvp_get_ip_address(int family, char *if_name, int op,
> void *out_buffer, int length)
> {
> struct ifaddrs *ifap;
> struct ifaddrs *curp;
> - int ipv4_len = strlen("255.255.255.255") + 1;
> - int ipv6_len = strlen("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")+1;
> int offset = 0;
> const char *str;
> - char tmp[50];
> int error = 0;
> char *buffer;
> struct hv_kvp_ipaddr_value *ip_buffer;
> @@ -556,55 +589,12 @@ kvp_get_ip_address(int family, char *if_name, int op,
> continue;
> }
>
> - if ((curp->ifa_addr->sa_family == AF_INET) &&
> - ((family == AF_INET) || (family == 0))) {
> - struct sockaddr_in *addr =
> - (struct sockaddr_in *) curp->ifa_addr;
> -
> - str = inet_ntop(AF_INET, &addr->sin_addr, tmp, 50);
> - if (str == NULL) {
> - strcpy(buffer, "inet_ntop failed\n");
> - error = 1;
> - goto getaddr_done;
> - }
> - if (offset == 0)
> - strcpy(buffer, tmp);
> - else
> - strcat(buffer, tmp);
> - strcat(buffer, ";");
> -
> - offset += strlen(str) + 1;
> - if ((length - offset) < (ipv4_len + 1))
> - goto getaddr_done;
> -
> - } else if ((family == AF_INET6) || (family == 0)) {
> -
> - /*
> - * We only support AF_INET and AF_INET6
> - * and the list of addresses is separated by a ";".
> - */
> - struct sockaddr_in6 *addr =
> - (struct sockaddr_in6 *) curp->ifa_addr;
> -
> - str = inet_ntop(AF_INET6,
> - &addr->sin6_addr.s6_addr,
> - tmp, 50);
> - if (str == NULL) {
> - strcpy(buffer, "inet_ntop failed\n");
> - error = 1;
> - goto getaddr_done;
> - }
> - if (offset == 0)
> - strcpy(buffer, tmp);
> - else
> - strcat(buffer, tmp);
> - strcat(buffer, ";");
> - offset += strlen(str) + 1;
> - if ((length - offset) < (ipv6_len + 1))
> - goto getaddr_done;
> -
> - }
> -
> + error = kvp_process_ip_address(curp->ifa_addr,
> + curp->ifa_addr->sa_family,
> + buffer,
> + length, &offset);
> + if (error)
> + goto getaddr_done;
>
> curp = curp->ifa_next;
> }
--
Ben Hutchings
I say we take off; nuke the site from orbit. It's the only way to be sure.
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