mirror of https://gerrit.osmocom.org/libosmocore
gsm23003: Add MME domain name related helper functions
osmo_gen_mme_group_domain(), osmo_gen_mme_group_domain() and osmo_gen_home_network_domain() Change-Id: Ia882d9db05ec0037e593aeebea21bc31adb680bb
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@ -101,6 +101,7 @@ const char *osmo_plmn_name2(const struct osmo_plmn_id *plmn);
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const char *osmo_lai_name(const struct osmo_location_area_id *lai);
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const char *osmo_cgi_name(const struct osmo_cell_global_id *cgi);
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const char *osmo_cgi_name2(const struct osmo_cell_global_id *cgi);
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const char *osmo_gummei_name(const struct osmo_gummei *gummei);
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void osmo_plmn_to_bcd(uint8_t *bcd_dst, const struct osmo_plmn_id *plmn);
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void osmo_plmn_from_bcd(const uint8_t *bcd_src, struct osmo_plmn_id *plmn);
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@ -120,3 +121,9 @@ static inline int osmo_mcc_from_str(const char *mcc_str, uint16_t *mcc)
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int osmo_mnc_cmp(uint16_t a_mnc, bool a_mnc_3_digits, uint16_t b_mnc, bool b_mnc_3_digits);
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int osmo_plmn_cmp(const struct osmo_plmn_id *a, const struct osmo_plmn_id *b);
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int osmo_gen_home_network_domain(char *out, const struct osmo_plmn_id *plmn);
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int osmo_parse_home_network_domain(struct osmo_plmn_id *out, const char *in);
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int osmo_gen_mme_domain(char *out, const struct osmo_gummei *gummei);
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int osmo_gen_mme_group_domain(char *out, uint16_t mmegi, const struct osmo_plmn_id *plmn);
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int osmo_parse_mme_domain(struct osmo_gummei *out, const char *in);
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@ -24,3 +24,9 @@
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GSM23003_IMEI_SNR_NUM_DIGITS + 1)
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#define GSM23003_IMEISV_NUM_DIGITS (GSM23003_IMEI_TAC_NUM_DIGITS + \
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GSM23003_IMEI_SNR_NUM_DIGITS + 2)
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/* Chapter 19.2 "epc.mnc000.mcc000.3gppnetwork.org" */
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#define GSM23003_HOME_NETWORK_DOMAIN_LEN 33
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/* Chapter 19.4.2.4: "mmec00.mmegi0000.mme.epc.mnc000.mcc000.3gppnetwork.org" */
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#define GSM23003_MME_DOMAIN_LEN 55
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@ -169,6 +169,14 @@ static void to_bcd(uint8_t *bcd, uint16_t val)
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bcd[0] = val % 10;
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}
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const char *osmo_gummei_name(const struct osmo_gummei *gummei)
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{
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static char buf[32];
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snprintf(buf, sizeof(buf), "%s-%04x-%02x", osmo_plmn_name(&gummei->plmn),
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gummei->mme.group_id, gummei->mme.code);
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return buf;
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}
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/* Convert MCC + MNC to BCD representation
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* \param[out] bcd_dst caller-allocated memory for output
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* \param[in] mcc Mobile Country Code
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@ -297,3 +305,81 @@ int osmo_plmn_cmp(const struct osmo_plmn_id *a, const struct osmo_plmn_id *b)
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return 1;
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return osmo_mnc_cmp(a->mnc, a->mnc_3_digits, b->mnc, b->mnc_3_digits);
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}
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/*! Generate TS 23.003 Section 19.2 Home Network Realm/Domain (text form)
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* \param out[out] caller-provided output buffer, at least 33 bytes long
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* \param plmn[in] Osmocom representation of PLMN ID (MCC + MNC)
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* \returns number of characters printed (excluding NUL); negative on error */
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int osmo_gen_home_network_domain(char *out, const struct osmo_plmn_id *plmn)
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{
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if (plmn->mcc > 999)
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return -EINVAL;
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if (plmn->mnc > 999)
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return -EINVAL;
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return sprintf(out, "epc.mnc%03u.mcc%03u.3gppnetwork.org", plmn->mnc, plmn->mcc);
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}
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/*! Parse a TS 23.003 Section 19.2 Home Network Realm/Domain (text form) into a \ref osmo_plmn_id
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* \param out[out] caller-allocated output structure
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* \param in[in] character string representation to be parsed
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* \returns 0 on success; negative on error */
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int osmo_parse_home_network_domain(struct osmo_plmn_id *out, const char *in)
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{
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int rc;
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memset(out, 0, sizeof(*out));
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rc = sscanf(in, "epc.mnc%03hu.mcc%03hu.3gppnetwork.org", &out->mnc, &out->mcc);
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if (rc < 0)
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return rc;
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if (rc != 2)
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return -EINVAL;
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return 0;
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}
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/*! Generate TS 23.003 Section 19.4.2.4 MME Domain (text form)
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* \param out[out] caller-provided output buffer, at least 56 bytes long
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* \param gummei[in] Structure representing the Globally Unique MME Identifier
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* \returns number of characters printed (excluding NUL); negative on error */
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int osmo_gen_mme_domain(char *out, const struct osmo_gummei *gummei)
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{
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char domain[GSM23003_HOME_NETWORK_DOMAIN_LEN+1];
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int rc;
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rc = osmo_gen_home_network_domain(domain, &gummei->plmn);
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if (rc < 0)
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return rc;
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return sprintf(out, "mmec%02x.mmegi%04x.mme.%s", gummei->mme.code, gummei->mme.group_id, domain);
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}
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/*! Parse a TS 23.003 Section 19.4.2.4 MME Domain (text form) into a \ref osmo_gummei
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* \param out[out] caller-allocated output GUMMEI structure
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* \param in[in] character string representation to be parsed
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* \returns 0 on success; negative on error */
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int osmo_parse_mme_domain(struct osmo_gummei *out, const char *in)
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{
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int rc;
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memset(out, 0, sizeof(*out));
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rc = sscanf(in, "mmec%02hhx.mmegi%04hx.mme.epc.mnc%03hu.mcc%03hu.3gppnetwork.org",
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&out->mme.code, &out->mme.group_id,
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&out->plmn.mnc, &out->plmn.mcc);
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if (rc < 0)
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return rc;
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if (rc != 4)
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return -EINVAL;
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return 0;
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}
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/*! Generate TS 23.003 Section 19.4.2.4 MME Group Domain (text form)
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* \param out[out] caller-provided output buffer, at least 56 bytes long
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* \param mmegi[in] MME Group Identifier
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* \param plmn[in] Osmocom representation of PLMN ID (MCC + MNC)
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* \returns number of characters printed (excluding NUL); negative on error */
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int osmo_gen_mme_group_domain(char *out, uint16_t mmegi, const struct osmo_plmn_id *plmn)
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{
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char domain[GSM23003_HOME_NETWORK_DOMAIN_LEN+1];
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int rc;
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rc = osmo_gen_home_network_domain(domain, plmn);
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if (rc < 0)
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return rc;
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return sprintf(out, "mmegi%04x.mme.%s", mmegi, domain);
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}
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@ -315,9 +315,15 @@ osmo_lai_name;
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osmo_rai_name;
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osmo_cgi_name;
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osmo_cgi_name2;
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osmo_gummei_name;
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osmo_mnc_from_str;
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osmo_mnc_cmp;
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osmo_plmn_cmp;
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osmo_gen_home_network_domain;
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osmo_parse_home_network_domain;
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osmo_gen_mme_domain;
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osmo_parse_mme_domain;
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osmo_gen_mme_group_domain;
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gsm48_chan_mode_names;
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gsm_chan_t_names;
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gsm48_pdisc_names;
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@ -24,8 +24,10 @@
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#include <stdio.h>
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#include <errno.h>
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#include <strings.h>
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#include <string.h>
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#include <osmocom/gsm/gsm23003.h>
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#include <osmocom/gsm/protocol/gsm_23_003.h>
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#include <osmocom/core/utils.h>
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#define BOOL_STR(b) ((b)? "true" : "false")
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@ -170,6 +172,76 @@ static bool test_mnc_from_str()
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return pass;
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}
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static bool test_gummei_name()
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{
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static const struct osmo_gummei gummei = {
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.plmn = { .mcc = 901, .mnc = 70 },
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.mme = { .group_id = 0xA123, .code = 0xB1 }
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};
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const char *out;
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bool pass = true;
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out = osmo_gummei_name(&gummei);
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printf("%s\n", out);
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if (strcmp(out, "901-70-a123-b1"))
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pass = false;
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return pass;
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}
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static bool test_domain_gen()
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{
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static const struct osmo_gummei gummei = {
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.plmn = { .mcc = 901, .mnc = 70 },
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.mme = { .group_id = 0xA123, .code = 0xB1 }
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};
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char out[GSM23003_MME_DOMAIN_LEN];
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bool pass = true;
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int rc;
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rc = osmo_gen_home_network_domain(out, &gummei.plmn);
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if (rc < 0)
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pass = false;
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printf("%s -> %s\n", osmo_plmn_name(&gummei.plmn), out);
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if (strcmp(out, "epc.mnc070.mcc901.3gppnetwork.org"))
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pass = false;
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rc = osmo_gen_mme_domain(out, &gummei);
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printf("%s -> %s\n", osmo_gummei_name(&gummei), out);
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if (strcmp(out, "mmecb1.mmegia123.mme.epc.mnc070.mcc901.3gppnetwork.org"))
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pass = false;
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return pass;
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}
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static bool test_domain_parse()
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{
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static const char *mme_dom_valid = "mmec01.mmegiA001.mme.epc.mnc070.mcc901.3gppnetwork.org";
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static const char *home_dom_valid = "epc.mnc070.mcc901.3gppnetwork.org";
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struct osmo_gummei gummei;
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struct osmo_plmn_id plmn;
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bool pass = true;
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int rc;
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rc = osmo_parse_home_network_domain(&plmn, home_dom_valid);
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if (rc < 0)
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pass = false;
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printf("%s -> %s\n", home_dom_valid, osmo_plmn_name(&plmn));
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if (plmn.mcc != 901 || plmn.mnc != 70)
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pass = false;
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rc = osmo_parse_mme_domain(&gummei, mme_dom_valid);
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if (rc < 0)
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pass = false;
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printf("%s -> %s\n", mme_dom_valid, osmo_gummei_name(&gummei));
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if (gummei.plmn.mcc != 901 || gummei.plmn.mnc != 70 ||
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gummei.mme.group_id != 0xA001 || gummei.mme.code != 1)
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pass = false;
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return pass;
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}
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int main(int argc, char **argv)
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{
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bool pass = true;
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@ -177,6 +249,9 @@ int main(int argc, char **argv)
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pass = pass && test_valid_imsi();
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pass = pass && test_valid_msisdn();
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pass = pass && test_mnc_from_str();
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pass = pass && test_gummei_name();
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pass = pass && test_domain_gen();
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pass = pass && test_domain_parse();
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OSMO_ASSERT(pass);
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@ -59,3 +59,8 @@
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13: " 023" rc=-22 mnc=0 mnc_3_digits=0 pass
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14: "023 " rc=-22 mnc=0 mnc_3_digits=0 pass
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15: "023 " rc=-22 mnc=0 mnc_3_digits=0 pass
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901-70-a123-b1
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901-70 -> epc.mnc070.mcc901.3gppnetwork.org
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901-70-a123-b1 -> mmecb1.mmegia123.mme.epc.mnc070.mcc901.3gppnetwork.org
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epc.mnc070.mcc901.3gppnetwork.org -> 901-70
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mmec01.mmegiA001.mme.epc.mnc070.mcc901.3gppnetwork.org -> 901-70-a001-01
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