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wmc: remove usage of glib

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People have asked for leaner builds and	glib isn't strictly
required for the core library.
This commit is contained in:
Dan Williams
2012-01-03 00:12:36 -06:00
parent 267b83ae27
commit 1e1c8a5ae4
8 changed files with 196 additions and 185 deletions
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libwmc/src/utils.c
+79 -78
View File
@@ -23,6 +23,7 @@
#include <string.h>
#include "utils.h"
#include "errors.h"
/* QCDM protocol frames are pseudo Async HDLC frames which end with a 3-byte
* trailer. This trailer consists of the 16-bit CRC of the frame plus an ending
@@ -32,7 +33,7 @@
*/
/* Table of CRCs for each possible byte, with a generator polynomial of 0x8408 */
const guint16 crc_table[256] = {
const u_int16_t crc_table[256] = {
0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
@@ -68,10 +69,10 @@ const guint16 crc_table[256] = {
};
/* Calculate the CRC for a buffer using a seed of 0xffff */
guint16
crc16 (const char *buffer, gsize len, guint16 seed)
u_int16_t
crc16 (const char *buffer, size_t len, u_int16_t seed)
{
guint16 crc = seed ? seed : 0xFFFF;
u_int16_t crc = seed ? seed : 0xFFFF;
while (len--)
crc = crc_table[(crc ^ *buffer++) & 0xff] ^ (crc >> 8);
@@ -84,21 +85,21 @@ crc16 (const char *buffer, gsize len, guint16 seed)
/* Performs DM escaping on inbuf putting the result into outbuf, and returns
* the final length of the buffer.
*/
gsize
size_t
hdlc_escape (const char *inbuf,
gsize inbuf_len,
gboolean escape_all_ctrl,
size_t inbuf_len,
wmcbool escape_all_ctrl,
char *outbuf,
gsize outbuf_len)
size_t outbuf_len)
{
const char *src = inbuf;
char *dst = outbuf;
size_t i = inbuf_len;
g_return_val_if_fail (inbuf != NULL, 0);
g_return_val_if_fail (inbuf_len > 0, 0);
g_return_val_if_fail (outbuf != NULL, 0);
g_return_val_if_fail (outbuf_len > inbuf_len, 0);
wmc_return_val_if_fail (inbuf != NULL, 0);
wmc_return_val_if_fail (inbuf_len > 0, 0);
wmc_return_val_if_fail (outbuf != NULL, 0);
wmc_return_val_if_fail (outbuf_len > inbuf_len, 0);
/* Since escaping potentially doubles the # of bytes, short-circuit the
* length check if destination buffer is clearly large enough. Note the
@@ -128,7 +129,7 @@ hdlc_escape (const char *inbuf,
src = inbuf;
i = inbuf_len;
while (i--) {
guint8 byte = (guint8) *src++;
u_int8_t byte = (u_int8_t) *src++;
if ( byte == DIAG_CONTROL_CHAR
|| byte == DIAG_ESC_CHAR
@@ -142,18 +143,18 @@ hdlc_escape (const char *inbuf,
return (dst - outbuf);
}
gsize
size_t
hdlc_unescape (const char *inbuf,
gsize inbuf_len,
size_t inbuf_len,
char *outbuf,
gsize outbuf_len,
gboolean *escaping)
size_t outbuf_len,
wmcbool *escaping)
{
size_t i, outsize;
g_return_val_if_fail (inbuf_len > 0, 0);
g_return_val_if_fail (outbuf_len >= inbuf_len, 0);
g_return_val_if_fail (escaping != NULL, 0);
wmc_return_val_if_fail (inbuf_len > 0, 0);
wmc_return_val_if_fail (outbuf_len >= inbuf_len, 0);
wmc_return_val_if_fail (escaping != NULL, 0);
for (i = 0, outsize = 0; i < inbuf_len; i++) {
if (*escaping) {
@@ -189,23 +190,23 @@ hdlc_unescape (const char *inbuf,
*
* Returns: size of the encapsulated data writted to @outbuf.
**/
gsize
size_t
hdlc_encapsulate_buffer (char *inbuf,
gsize cmd_len,
gsize inbuf_len,
guint16 crc_seed,
gboolean add_trailer,
gboolean escape_all_ctrl,
size_t cmd_len,
size_t inbuf_len,
u_int16_t crc_seed,
wmcbool add_trailer,
wmcbool escape_all_ctrl,
char *outbuf,
gsize outbuf_len)
size_t outbuf_len)
{
guint16 crc;
gsize escaped_len;
u_int16_t crc;
size_t escaped_len;
g_return_val_if_fail (inbuf != NULL, 0);
g_return_val_if_fail (cmd_len >= 1, 0);
g_return_val_if_fail (inbuf_len >= cmd_len + 2, 0); /* space for CRC */
g_return_val_if_fail (outbuf != NULL, 0);
wmc_return_val_if_fail (inbuf != NULL, 0);
wmc_return_val_if_fail (cmd_len >= 1, 0);
wmc_return_val_if_fail (inbuf_len >= cmd_len + 2, 0); /* space for CRC */
wmc_return_val_if_fail (outbuf != NULL, 0);
/* Add the CRC */
crc = crc16 (inbuf, cmd_len, crc_seed ? crc_seed : 0xFFFF);
@@ -213,7 +214,7 @@ hdlc_encapsulate_buffer (char *inbuf,
inbuf[cmd_len++] = (crc >> 8) & 0xFF;
escaped_len = hdlc_escape (inbuf, cmd_len, escape_all_ctrl, outbuf, outbuf_len);
g_return_val_if_fail (outbuf_len > escaped_len, 0);
wmc_return_val_if_fail (outbuf_len > escaped_len, 0);
if (add_trailer)
outbuf[escaped_len++] = DIAG_CONTROL_CHAR;
@@ -236,25 +237,25 @@ hdlc_encapsulate_buffer (char *inbuf,
*
* Returns: size of the encapsulated data writted to @outbuf.
*/
static gsize
static size_t
uml290_wmc_encapsulate (char *inbuf,
gsize cmd_len,
gsize inbuf_len,
size_t cmd_len,
size_t inbuf_len,
char *outbuf,
gsize outbuf_len)
size_t outbuf_len)
{
gsize encap_len;
gsize estimated_out_len;
size_t encap_len;
size_t estimated_out_len;
g_return_val_if_fail (inbuf != NULL, 0);
g_return_val_if_fail (cmd_len >= 1, 0);
g_return_val_if_fail (inbuf_len >= cmd_len + 2, 0); /* space for CRC */
g_return_val_if_fail (outbuf != NULL, 0);
wmc_return_val_if_fail (inbuf != NULL, 0);
wmc_return_val_if_fail (cmd_len >= 1, 0);
wmc_return_val_if_fail (inbuf_len >= cmd_len + 2, 0); /* space for CRC */
wmc_return_val_if_fail (outbuf != NULL, 0);
estimated_out_len = cmd_len + strlen (AT_WMC_PREFIX);
estimated_out_len += 3; /* CRC + trailer */
estimated_out_len += cmd_len * 1.3; /* escaping */
g_return_val_if_fail (outbuf_len > estimated_out_len, 0);
wmc_return_val_if_fail (outbuf_len > estimated_out_len, 0);
memcpy (outbuf, AT_WMC_PREFIX, strlen (AT_WMC_PREFIX));
@@ -283,18 +284,18 @@ uml290_wmc_encapsulate (char *inbuf,
*
* Returns: size of the encapsulated data writted to @outbuf.
*/
gsize
size_t
wmc_encapsulate (char *inbuf,
gsize cmd_len,
gsize inbuf_len,
size_t cmd_len,
size_t inbuf_len,
char *outbuf,
gsize outbuf_len,
gboolean uml290)
size_t outbuf_len,
wmcbool uml290)
{
g_return_val_if_fail (inbuf != NULL, 0);
g_return_val_if_fail (cmd_len >= 1, 0);
g_return_val_if_fail (inbuf_len >= cmd_len + 3, 0); /* space for CRC + trailer */
g_return_val_if_fail (outbuf != NULL, 0);
wmc_return_val_if_fail (inbuf != NULL, 0);
wmc_return_val_if_fail (cmd_len >= 1, 0);
wmc_return_val_if_fail (inbuf_len >= cmd_len + 3, 0); /* space for CRC + trailer */
wmc_return_val_if_fail (outbuf != NULL, 0);
if (uml290)
return uml290_wmc_encapsulate (inbuf, cmd_len, inbuf_len, outbuf, outbuf_len);
@@ -333,27 +334,27 @@ wmc_encapsulate (char *inbuf,
* all cases the caller should advance the buffer by the number of bytes
* returned in @out_used before calling this function again.
**/
gboolean
wmcbool
hdlc_decapsulate_buffer (const char *inbuf,
gsize inbuf_len,
gboolean check_known_crc,
guint16 known_crc,
size_t inbuf_len,
wmcbool check_known_crc,
u_int16_t known_crc,
char *outbuf,
gsize outbuf_len,
gsize *out_decap_len,
gsize *out_used,
gboolean *out_need_more)
size_t outbuf_len,
size_t *out_decap_len,
size_t *out_used,
wmcbool *out_need_more)
{
gboolean escaping = FALSE;
gsize i, pkt_len = 0, unesc_len;
guint16 crc, pkt_crc;
wmcbool escaping = FALSE;
size_t i, pkt_len = 0, unesc_len;
u_int16_t crc, pkt_crc;
g_return_val_if_fail (inbuf != NULL, FALSE);
g_return_val_if_fail (outbuf != NULL, FALSE);
g_return_val_if_fail (outbuf_len > 0, FALSE);
g_return_val_if_fail (out_decap_len != NULL, FALSE);
g_return_val_if_fail (out_used != NULL, FALSE);
g_return_val_if_fail (out_need_more != NULL, FALSE);
wmc_return_val_if_fail (inbuf != NULL, FALSE);
wmc_return_val_if_fail (outbuf != NULL, FALSE);
wmc_return_val_if_fail (outbuf_len > 0, FALSE);
wmc_return_val_if_fail (out_decap_len != NULL, FALSE);
wmc_return_val_if_fail (out_used != NULL, FALSE);
wmc_return_val_if_fail (out_need_more != NULL, FALSE);
*out_decap_len = 0;
*out_used = 0;
@@ -441,15 +442,15 @@ hdlc_decapsulate_buffer (const char *inbuf,
* all cases the caller should advance the buffer by the number of bytes
* returned in @out_used before calling this function again.
**/
gboolean
wmcbool
wmc_decapsulate (const char *inbuf,
gsize inbuf_len,
size_t inbuf_len,
char *outbuf,
gsize outbuf_len,
gsize *out_decap_len,
gsize *out_used,
gboolean *out_need_more,
gboolean uml290)
size_t outbuf_len,
size_t *out_decap_len,
size_t *out_used,
wmcbool *out_need_more,
wmcbool uml290)
{
return hdlc_decapsulate_buffer (inbuf, inbuf_len,
uml290, uml290 ? 0x3030 : 0,