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#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <osmocom/gsm/apn.h>
#define APN_OI_GPRS_FMT "mnc%03u.mcc%03u.gprs"
#define APN_GPRS_FMT "%s.mnc%03u.mcc%03u.gprs"
static char apn_strbuf[APN_MAXLEN+1];
char *osmo_apn_qualify(unsigned int mcc, unsigned int mnc, const char *ni)
{
snprintf(apn_strbuf, sizeof(apn_strbuf)-1, APN_GPRS_FMT,
ni, mnc, mcc);
apn_strbuf[sizeof(apn_strbuf)-1] = '\0';
return apn_strbuf;
}
char *osmo_apn_qualify_from_imsi(const char *imsi,
const char *ni, int have_3dig_mnc)
{
char cbuf[3+1], nbuf[3+1];
strncpy(cbuf, imsi, 3);
cbuf[3] = '\0';
if (have_3dig_mnc) {
strncpy(nbuf, imsi+3, 3);
nbuf[3] = '\0';
} else {
strncpy(nbuf, imsi+3, 2);
nbuf[2] = '\0';
}
return osmo_apn_qualify(atoi(cbuf), atoi(nbuf), ni);
}
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