diff options
| -rw-r--r-- | src/bootp.c | 23 | ||||
| -rw-r--r-- | src/bootp.h | 1 |
2 files changed, 24 insertions, 0 deletions
diff --git a/src/bootp.c b/src/bootp.c index 1a3517e..3ade02c 100644 --- a/src/bootp.c +++ b/src/bootp.c @@ -34,6 +34,8 @@ #define LEASE_TIME (24 * 3600) +#define UEFI_HTTP_VENDOR_CLASS_ID "HTTPClient" + static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE }; #define DPRINTF(fmt, ...) DEBUG_CALL(fmt, ##__VA_ARGS__) @@ -340,6 +342,27 @@ static void bootp_reply(Slirp *slirp, q += val; } } + + /* this allows to support UEFI HTTP boot: according to the UEFI + specification, DHCP server must send vendor class identifier option + set to "HTTPClient" string, when responding to DHCP requests as part + of the UEFI HTTP boot + + we assume that, if the bootfile parameter was configured as an http + URL, the user intends to perform UEFI HTTP boot, so send this option + automatically */ + if (g_str_has_prefix(slirp->bootp_filename, "http://")) { + val = strlen(UEFI_HTTP_VENDOR_CLASS_ID); + if (q + val + 2 >= end) { + g_warning("DHCP packet size exceeded, " + "omitting vendor class id option."); + } else { + *q++ = RFC2132_VENDOR_CLASS_ID; + *q++ = val; + memcpy(q, UEFI_HTTP_VENDOR_CLASS_ID, val); + q += val; + } + } } else { static const char nak_msg[] = "requested address not available"; diff --git a/src/bootp.h b/src/bootp.h index 31ce5fd..cf7797f 100644 --- a/src/bootp.h +++ b/src/bootp.h @@ -71,6 +71,7 @@ #define RFC2132_MAX_SIZE 57 #define RFC2132_RENEWAL_TIME 58 #define RFC2132_REBIND_TIME 59 +#define RFC2132_VENDOR_CLASS_ID 60 #define RFC2132_TFTP_SERVER_NAME 66 #define DHCPDISCOVER 1 |