/**
* Logs a formatted string -- similiar to printf()
*
* @param sev The severity
* @param fmt The format string
* @param ... Additional arguments
*/
void log_fmt(log_sev_t sev, const char *fmt, ...)
{
va_list args;
int len;
size_t cap;
if ((fmt == NULL) || !log_sev_on(sev))
{
return;
}
/* Some implementation of vsnprintf() return the number of characters
* that would have been stored if the buffer was large enough instead of
* the number of characters actually stored.
*/
cap = log_start(sev);
/* Add on the variable log parameters to the log string */
va_start(args, fmt);
len = vsnprintf(&g_log.buf[g_log.buf_len], cap, fmt, args);
va_end(args);
if (len > 0)
{
if (len > (int)cap)
{
len = cap;
}
g_log.buf_len += len;
g_log.buf[g_log.buf_len] = 0;
}
log_end();
}
/**
* Dumps hex characters inline, no newlines inserted
*
* @param sev The severity
* @param data The data to log
* @param len The number of bytes to log
*/
void log_hex(log_sev_t sev, const void *vdata, int len)
{
const UINT8 *dat = (const UINT8 *)vdata;
int idx;
char buf[80];
if ((vdata == NULL) || !log_sev_on(sev))
{
return;
}
idx = 0;
while (len-- > 0)
{
buf[idx++] = to_hex_char(*dat >> 4);
buf[idx++] = to_hex_char(*dat);
dat++;
if (idx >= (int)(sizeof(buf) - 3))
{
buf[idx] = 0;
log_str(sev, buf, idx);
idx = 0;
}
}
if (idx > 0)
{
buf[idx] = 0;
log_str(sev, buf, idx);
}
}
static void print_stack(log_sev_t logsev, const char *str,
struct parse_frame *frm, chunk_t *pc)
{
(void)pc;
LOG_FUNC_ENTRY();
if (log_sev_on(logsev))
{
int idx;
log_fmt(logsev, "%8.8s", str);
for (idx = 1; idx <= frm->pse_tos; idx++)
{
if (frm->pse[idx].stage != BS_NONE)
{
LOG_FMT(logsev, " [%s - %d]", get_token_name(frm->pse[idx].type),
frm->pse[idx].stage);
}
else
{
LOG_FMT(logsev, " [%s]", get_token_name(frm->pse[idx].type));
}
}
log_fmt(logsev, "\n");
}
}
void log_pcf_flags(log_sev_t sev, UINT64 flags)
{
if (!log_sev_on(sev))
{
return;
}
log_fmt(sev, "[0x%" PRIx64 ":", flags);
const char *tolog = NULL;
for (int i = 0; i < (int)ARRAY_SIZE(pcf_names); i++)
{
if ((flags & (1ULL << i)) != 0)
{
if (tolog != NULL)
{
log_str(sev, tolog, strlen(tolog));
log_str(sev, ",", 1);
}
tolog = pcf_names[i];
}
}
if (tolog != NULL)
{
log_str(sev, tolog, strlen(tolog));
}
log_str(sev, "]\n", 2);
}
/**
* Logs a block of data in a pretty hex format
* Numbers on the left, characters on the right, just like I like it.
*
* @param sev The severity
* @param data The data to log
* @param len The number of bytes to log
*/
void log_hex_blk(log_sev_t sev, const void *data, int len)
{
static char buf[80] = "nnn | XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX | cccccccccccccccc\n";
const UINT8 *dat = (const UINT8 *)data;
int idx;
int count;
int str_idx = 0;
int chr_idx = 0;
int tmp;
int total;
if ((data == NULL) || (len <= 0) || !log_sev_on(sev))
{
return;
}
/*
* Dump the specified number of bytes in hex, 16 byte per line by
* creating a string and then calling log_str()
*/
/* Loop through the data of the current iov */
count = 0;
total = 0;
for (idx = 0; idx < len; idx++)
{
if (count == 0)
{
str_idx = 6;
chr_idx = 56;
buf[0] = to_hex_char(total >> 12);
buf[1] = to_hex_char(total >> 8);
buf[2] = to_hex_char(total >> 4);
}
tmp = dat[idx];
buf[str_idx] = to_hex_char(tmp >> 4);
buf[str_idx + 1] = to_hex_char(tmp);
str_idx += 3;
buf[chr_idx++] = unc_isprint(tmp) ? tmp : '.';
total++;
count++;
if (count >= 16)
{
count = 0;
log_str(sev, buf, 73);
}
}
static void align_log_al(log_sev_t sev, int line)
{
int idx;
if (log_sev_on(sev))
{
log_fmt(sev, "%s: line %d, %d)", __func__, line, cpd.al_cnt);
for (idx = 0; idx < cpd.al_cnt; idx++)
{
log_fmt(sev, " %d/%d=%s", cpd.al[idx].col, cpd.al[idx].len,
get_token_name(cpd.al[idx].type));
}
log_fmt(sev, "\n");
}
}
/**
* Logs a string of known length
*
* @param sev The severity
* @param str The pointer to the string
* @param len The length of the string from strlen(str)
*/
void log_str(log_sev_t sev, const char *str, int len)
{
if ((str == NULL) || (len <= 0) || !log_sev_on(sev))
{
return;
}
size_t cap = log_start(sev);
if (cap > 0)
{
if (len > (int)cap)
{
len = cap;
}
memcpy(&g_log.buf[g_log.buf_len], str, len);
g_log.buf_len += len;
g_log.buf[g_log.buf_len] = 0;
}
log_end();
}
static void print_stack(log_sev_t logsev, const char *str,
parse_frame_t *frm, chunk_t *pc)
{
UNUSED(pc);
LOG_FUNC_ENTRY();
if (log_sev_on(logsev))
{
log_fmt(logsev, "%8.8s", str);
for (size_t idx = 1; idx <= frm->pse_tos; idx++)
{
if (frm->pse[idx].stage != brace_stage_e::NONE)
{
LOG_FMT(logsev, " [%s - %u]",
get_token_name(frm->pse[idx].type), (unsigned int)frm->pse[idx].stage);
}
else
{
LOG_FMT(logsev, " [%s]", get_token_name(frm->pse[idx].type));
}
}
log_fmt(logsev, "\n");
}
}
