Change in libosmocore[master]: gsm23003: add osmo_imei_str_valid()

[osmith]

osmith has uploaded this change for review. ( https://gerrit.osmocom.org/12524


Change subject: gsm23003: add osmo_imei_str_valid()
......................................................................

gsm23003: add osmo_imei_str_valid()

To be used by OsmoHLR to check IMEIs before writing them to the DB.

Related: OS#2541
Change-Id: Id2d2a3a93b033bafc74c62e15297034bf4aafe61
---
M include/osmocom/gsm/gsm23003.h
M src/gsm/gsm23003.c
M src/gsm/libosmogsm.map
3 files changed, 14 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/24/12524/1

diff --git a/include/osmocom/gsm/gsm23003.h b/include/osmocom/gsm/gsm23003.h
index 2f380ae..d21c8d5 100644
--- a/include/osmocom/gsm/gsm23003.h
+++ b/include/osmocom/gsm/gsm23003.h
@@ -93,6 +93,7 @@
 
 bool osmo_imsi_str_valid(const char *imsi);
 bool osmo_msisdn_str_valid(const char *msisdn);
+bool osmo_imei_str_valid(const char *imei);
 
 const char *osmo_mcc_name(uint16_t mcc);
 const char *osmo_mnc_name(uint16_t mnc, bool mnc_3_digits);
diff --git a/src/gsm/gsm23003.c b/src/gsm/gsm23003.c
index 4fdad48..74d0de2 100644
--- a/src/gsm/gsm23003.c
+++ b/src/gsm/gsm23003.c
@@ -71,6 +71,18 @@
 	return is_n_digits(msisdn, 1, 15);
 }
 
+/*! Determine whether the given IMEI is valid according to 3GPP TS 23.003,
+ * Section 6.2.1. It consists of 14 digits, the 15th check digit is not
+ * intended for digital transmission.
+ * \param imei  IMEI digits in ASCII string representation.
+ * \returns true when the IMEI is valid, false for invalid characters or number
+ *          of digits.
+ */
+bool osmo_imei_str_valid(const char *imei)
+{
+	return is_n_digits(imei, 14, 14);
+}
+
 /*! Return MCC string as standardized 3-digit with leading zeros.
  * \param[in] mcc  MCC value.
  * \returns string in static buffer.
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index cdcbcc9..dbac69b 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -534,6 +534,7 @@
 
 osmo_imsi_str_valid;
 osmo_msisdn_str_valid;
+osmo_imei_str_valid;
 
 osmo_mncc_stringify;
 osmo_mncc_names;

-- 
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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Id2d2a3a93b033bafc74c62e15297034bf4aafe61
Gerrit-Change-Number: 12524
Gerrit-PatchSet: 1
Gerrit-Owner: osmith <osmith at sysmocom.de>
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