diff options
Diffstat (limited to 'lib/liblwres/lwpacket.c')
| -rw-r--r-- | lib/liblwres/lwpacket.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/lib/liblwres/lwpacket.c b/lib/liblwres/lwpacket.c new file mode 100644 index 000000000..7bcdbbd4a --- /dev/null +++ b/lib/liblwres/lwpacket.c @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2000, 2001 Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM + * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL + * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING + * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION + * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id: lwpacket.c,v 1.1 2004/03/15 20:35:25 as Exp $ */ + +#include <config.h> + +#include <assert.h> +#include <stdlib.h> +#include <string.h> + +#include <lwres/lwbuffer.h> +#include <lwres/lwpacket.h> +#include <lwres/result.h> + +#include "assert_p.h" + +#define LWPACKET_LENGTH \ + (sizeof(lwres_uint16_t) * 4 + sizeof(lwres_uint32_t) * 5) + +lwres_result_t +lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) { + REQUIRE(b != NULL); + REQUIRE(pkt != NULL); + + if (!SPACE_OK(b, LWPACKET_LENGTH)) + return (LWRES_R_UNEXPECTEDEND); + + lwres_buffer_putuint32(b, pkt->length); + lwres_buffer_putuint16(b, pkt->version); + lwres_buffer_putuint16(b, pkt->pktflags); + lwres_buffer_putuint32(b, pkt->serial); + lwres_buffer_putuint32(b, pkt->opcode); + lwres_buffer_putuint32(b, pkt->result); + lwres_buffer_putuint32(b, pkt->recvlength); + lwres_buffer_putuint16(b, pkt->authtype); + lwres_buffer_putuint16(b, pkt->authlength); + + return (LWRES_R_SUCCESS); +} + +lwres_result_t +lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) { + lwres_uint32_t space; + + REQUIRE(b != NULL); + REQUIRE(pkt != NULL); + + space = LWRES_BUFFER_REMAINING(b); + if (space < LWPACKET_LENGTH) + return (LWRES_R_UNEXPECTEDEND); + + pkt->length = lwres_buffer_getuint32(b); + /* + * XXXBEW/MLG Checking that the buffer is long enough probably + * shouldn't be done here, since this function is supposed to just + * parse the header. + */ + if (pkt->length > space) + return (LWRES_R_UNEXPECTEDEND); + pkt->version = lwres_buffer_getuint16(b); + pkt->pktflags = lwres_buffer_getuint16(b); + pkt->serial = lwres_buffer_getuint32(b); + pkt->opcode = lwres_buffer_getuint32(b); + pkt->result = lwres_buffer_getuint32(b); + pkt->recvlength = lwres_buffer_getuint32(b); + pkt->authtype = lwres_buffer_getuint16(b); + pkt->authlength = lwres_buffer_getuint16(b); + + return (LWRES_R_SUCCESS); +} |