int select_sys_unique(str* res, select_t* s, struct sip_msg* msg) {
#define UNIQUE_ID_PID_LEN 4
#define UNIQUE_ID_TIME_LEN 8
#define UNIQUE_ID_FIX_LEN (UNIQUE_ID_PID_LEN+1+UNIQUE_ID_TIME_LEN+1)
#define UNIQUE_ID_RAND_LEN 8
static char uniq_id[UNIQUE_ID_FIX_LEN+UNIQUE_ID_RAND_LEN];
static int uniq_for_pid = -1;
int i;
if (uniq_for_pid != getpid()) {
/* first call for this process */
int cb, rb, x, l;
char *c;
/* init gloabally uniq part */
c = int2str_base_0pad(getpid(), &l, 16, UNIQUE_ID_PID_LEN);
memcpy(uniq_id, c, UNIQUE_ID_PID_LEN);
uniq_id[UNIQUE_ID_PID_LEN] = '-';
c = int2str_base_0pad(time(NULL), &l, 16, UNIQUE_ID_TIME_LEN);
memcpy(uniq_id+UNIQUE_ID_PID_LEN+1, c, UNIQUE_ID_TIME_LEN);
uniq_id[UNIQUE_ID_PID_LEN+1+UNIQUE_ID_TIME_LEN] = '-';
/* init random part */
for (i = KAM_RAND_MAX, rb=0; i; rb++, i>>=1);
for (i = UNIQUE_ID_FIX_LEN, cb = 0, x = 0; i < UNIQUE_ID_FIX_LEN+UNIQUE_ID_RAND_LEN; i++) {
if (!cb) {
cb = rb;
x = kam_rand();
}
uniq_id[i] = fourbits2char[x & 0x0F];
x >>= rb;
cb -= rb;
}
uniq_for_pid = getpid();
}
int uint_to_static_buffer_ex(str* res, unsigned int val, int base, int pad)
{
char *c;
c = int2str_base_0pad(val, &res->len, base, pad);
res->s = get_static_buffer(res->len);
if (!res->s) return -1;
memcpy(res->s, c, res->len);
return 0;
}
static int xl_get_msgid(struct sip_msg *msg, str *res, str *hp, int hi, int hf)
{
int l = 0;
char *ch = NULL;
if(msg==NULL || res==NULL)
return -1;
ch = int2str_base_0pad(msg->id, &l, hi, hi==10?0:8);
res->s = ch;
res->len = l;
return 0;
}
static int xl_get_times(struct sip_msg *msg, str *res, str *hp, int hi, int hf)
{
int l = 0;
char *ch = NULL;
if(msg==NULL || res==NULL)
return -1;
if(msg_id != msg->id || msg_tm==0)
{
msg_tm = time(NULL);
msg_id = msg->id;
}
ch = int2str_base_0pad(msg_tm, &l, hi, hi==10?0:8);
res->s = ch;
res->len = l;
return 0;
}