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Max gerrit-no-reply at lists.osmocom.orgHello Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/465 to look at the new patch set (#2). Add function to check GMM encryptability Check if particular GMM message can be encrypted according to 3GPP TS 24.008 § 4.7.1.2 Related: OS#1582 Change-Id: I7ad0e03c2c738d174dd6bc3453f332eeb8da1e7d --- M include/osmocom/gsm/protocol/gsm_04_08.h 1 file changed, 25 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/65/465/2 diff --git a/include/osmocom/gsm/protocol/gsm_04_08.h b/include/osmocom/gsm/protocol/gsm_04_08.h index 074c258..957353b 100644 --- a/include/osmocom/gsm/protocol/gsm_04_08.h +++ b/include/osmocom/gsm/protocol/gsm_04_08.h @@ -5,7 +5,7 @@ #include <osmocom/core/utils.h> #include <osmocom/core/endian.h> - +#include <osmocom/gsm/protocol/gsm_04_08_gprs.h> /* GSM TS 04.08 definitions */ struct gsm_lchan; @@ -946,6 +946,30 @@ return (hdr->proto_discr & 0xf0) >> 4; } +/*! \brief Checks is particular message is cipherable in A/Gb mode according to + * 3GPP TS 24.008 § 4.7.1.2 + * \param[in] hdr Message header + * \return true if message can be encrypted, false otherwise + */ +static inline bool gsm48_hdr_gmm_cipherable(const struct gsm48_hdr *hdr) +{ + switch(hdr->msg_type) { + case GSM48_MT_GMM_ATTACH_REQ: + case GSM48_MT_GMM_ATTACH_REJ: + case GSM48_MT_GMM_AUTH_CIPH_REQ: + case GSM48_MT_GMM_AUTH_CIPH_RESP: + case GSM48_MT_GMM_AUTH_CIPH_REJ: + case GSM48_MT_GMM_AUTH_CIPH_FAIL: + case GSM48_MT_GMM_ID_REQ: + case GSM48_MT_GMM_ID_RESP: + case GSM48_MT_GMM_RA_UPD_REQ: + case GSM48_MT_GMM_RA_UPD_REJ: + return false; + default: + return true; + } +} + static inline uint8_t gsm48_hdr_trans_id_flip_ti(const struct gsm48_hdr *hdr) { return gsm48_hdr_trans_id(hdr) ^ 0x08; -- To view, visit https://gerrit.osmocom.org/465 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I7ad0e03c2c738d174dd6bc3453f332eeb8da1e7d Gerrit-PatchSet: 2 Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Owner: Max <msuraev at sysmocom.de> Gerrit-Reviewer: Jenkins Builder