/* * Attempt to parse a data blob for a key as an X509 certificate. */ static int x509_key_preparse(struct key_preparsed_payload *prep) { struct asymmetric_key_ids *kids; struct x509_certificate *cert; const char *q; size_t srlen, sulen; char *desc = NULL, *p; int ret; cert = x509_cert_parse(prep->data, prep->datalen); if (IS_ERR(cert)) return PTR_ERR(cert); pr_devel("Cert Issuer: %s\n", cert->issuer); pr_devel("Cert Subject: %s\n", cert->subject); if (cert->pub->pkey_algo >= PKEY_ALGO__LAST || cert->sig.pkey_algo >= PKEY_ALGO__LAST || cert->sig.pkey_hash_algo >= PKEY_HASH__LAST || !pkey_algo[cert->pub->pkey_algo] || !pkey_algo[cert->sig.pkey_algo] || !hash_algo_name[cert->sig.pkey_hash_algo]) { ret = -ENOPKG; goto error_free_cert; } pr_devel("Cert Key Algo: %s\n", pkey_algo_name[cert->pub->pkey_algo]); pr_devel("Cert Valid From: %04ld-%02d-%02d %02d:%02d:%02d\n", cert->valid_from.tm_year + 1900, cert->valid_from.tm_mon + 1, cert->valid_from.tm_mday, cert->valid_from.tm_hour, cert->valid_from.tm_min, cert->valid_from.tm_sec); pr_devel("Cert Valid To: %04ld-%02d-%02d %02d:%02d:%02d\n", cert->valid_to.tm_year + 1900, cert->valid_to.tm_mon + 1, cert->valid_to.tm_mday, cert->valid_to.tm_hour, cert->valid_to.tm_min, cert->valid_to.tm_sec); pr_devel("Cert Signature: %s + %s\n", pkey_algo_name[cert->sig.pkey_algo], hash_algo_name[cert->sig.pkey_hash_algo]); cert->pub->algo = pkey_algo[cert->pub->pkey_algo]; cert->pub->id_type = PKEY_ID_X509; /* Check the signature on the key if it appears to be self-signed */ if (!cert->authority || asymmetric_key_id_same(cert->skid, cert->authority)) { ret = x509_check_signature(cert->pub, cert); /* self-signed */ if (ret < 0) goto error_free_cert; } else if (!prep->trusted) { ret = x509_validate_trust(cert, get_system_trusted_keyring()); if (!ret) prep->trusted = 1; } /* Propose a description */ sulen = strlen(cert->subject); if (cert->raw_skid) { srlen = cert->raw_skid_size
/* * Attempt to parse a data blob for a key as an X509 certificate. */ static int x509_key_preparse(struct key_preparsed_payload *prep) { struct asymmetric_key_ids *kids; struct x509_certificate *cert; const char *q; size_t srlen, sulen; char *desc = NULL, *p; int ret; cert = x509_cert_parse(prep->data, prep->datalen); if (IS_ERR(cert)) return PTR_ERR(cert); pr_devel("Cert Issuer: %s\n", cert->issuer); pr_devel("Cert Subject: %s\n", cert->subject); if (cert->pub->pkey_algo >= PKEY_ALGO__LAST || cert->sig.pkey_algo >= PKEY_ALGO__LAST || cert->sig.pkey_hash_algo >= PKEY_HASH__LAST || !pkey_algo[cert->pub->pkey_algo] || !pkey_algo[cert->sig.pkey_algo] || !hash_algo_name[cert->sig.pkey_hash_algo]) { ret = -ENOPKG; goto error_free_cert; } pr_devel("Cert Key Algo: %s\n", pkey_algo_name[cert->pub->pkey_algo]); pr_devel("Cert Valid period: %lld-%lld\n", cert->valid_from, cert->valid_to); pr_devel("Cert Signature: %s + %s\n", pkey_algo_name[cert->sig.pkey_algo], hash_algo_name[cert->sig.pkey_hash_algo]); cert->pub->algo = pkey_algo[cert->pub->pkey_algo]; cert->pub->id_type = PKEY_ID_X509; /* Check the signature on the key if it appears to be self-signed */ if (!cert->akid_skid || asymmetric_key_id_same(cert->skid, cert->akid_skid)) { ret = x509_check_signature(cert->pub, cert); /* self-signed */ if (ret < 0) goto error_free_cert; } else if (!prep->trusted) { ret = x509_validate_trust(cert, get_system_trusted_keyring()); if (!ret) prep->trusted = 1; } /* Propose a description */ sulen = strlen(cert->subject); if (cert->raw_skid) { srlen = cert->raw_skid_size; q = cert->raw_skid; } else { srlen = cert->raw_serial_size; q = cert->raw_serial; } ret = -ENOMEM; desc = kmalloc(sulen + 2 + srlen * 2 + 1, GFP_KERNEL); if (!desc) goto error_free_cert; p = memcpy(desc, cert->subject, sulen); p += sulen; *p++ = ':'; *p++ = ' '; p = bin2hex(p, q, srlen); *p = 0; kids = kmalloc(sizeof(struct asymmetric_key_ids), GFP_KERNEL); if (!kids) goto error_free_desc; kids->id[0] = cert->id; kids->id[1] = cert->skid; /* We're pinning the module by being linked against it */ __module_get(public_key_subtype.owner); prep->type_data[0] = &public_key_subtype; prep->type_data[1] = kids; prep->payload[0] = cert->pub; prep->description = desc; prep->quotalen = 100; /* We've finished with the certificate */ cert->pub = NULL; cert->id = NULL; cert->skid = NULL; desc = NULL; ret = 0; error_free_desc: kfree(desc); error_free_cert: x509_free_certificate(cert); return ret; }
/* * Attempt to parse a data blob for a key as an X509 certificate. */ static int x509_key_preparse(struct key_preparsed_payload *prep) { struct x509_certificate *cert; size_t srlen, sulen; char *desc = NULL; int ret; cert = x509_cert_parse(prep->data, prep->datalen); if (IS_ERR(cert)) return PTR_ERR(cert); pr_devel("Cert Issuer: %s\n", cert->issuer); pr_devel("Cert Subject: %s\n", cert->subject); if (cert->pub->pkey_algo >= PKEY_ALGO__LAST || cert->sig.pkey_algo >= PKEY_ALGO__LAST || cert->sig.pkey_hash_algo >= PKEY_HASH__LAST || !pkey_algo[cert->pub->pkey_algo] || !pkey_algo[cert->sig.pkey_algo] || !hash_algo_name[cert->sig.pkey_hash_algo]) { ret = -ENOPKG; goto error_free_cert; } pr_devel("Cert Key Algo: %s\n", pkey_algo_name[cert->pub->pkey_algo]); pr_devel("Cert Valid From: %04ld-%02d-%02d %02d:%02d:%02d\n", cert->valid_from.tm_year + 1900, cert->valid_from.tm_mon + 1, cert->valid_from.tm_mday, cert->valid_from.tm_hour, cert->valid_from.tm_min, cert->valid_from.tm_sec); pr_devel("Cert Valid To: %04ld-%02d-%02d %02d:%02d:%02d\n", cert->valid_to.tm_year + 1900, cert->valid_to.tm_mon + 1, cert->valid_to.tm_mday, cert->valid_to.tm_hour, cert->valid_to.tm_min, cert->valid_to.tm_sec); pr_devel("Cert Signature: %s + %s\n", pkey_algo_name[cert->sig.pkey_algo], hash_algo_name[cert->sig.pkey_hash_algo]); if (!cert->fingerprint) { pr_warn("Cert for '%s' must have a SubjKeyId extension\n", cert->subject); ret = -EKEYREJECTED; goto error_free_cert; } cert->pub->algo = pkey_algo[cert->pub->pkey_algo]; cert->pub->id_type = PKEY_ID_X509; /* Check the signature on the key if it appears to be self-signed */ if (!cert->authority || strcmp(cert->fingerprint, cert->authority) == 0) { ret = x509_check_signature(cert->pub, cert); /* self-signed */ if (ret < 0) goto error_free_cert; } else if (!prep->trusted) { ret = x509_validate_trust(cert, get_system_trusted_keyring()); if (!ret) prep->trusted = 1; } /* Propose a description */ sulen = strlen(cert->subject); srlen = strlen(cert->fingerprint); ret = -ENOMEM; desc = kmalloc(sulen + 2 + srlen + 1, GFP_KERNEL); if (!desc) goto error_free_cert; memcpy(desc, cert->subject, sulen); desc[sulen] = ':'; desc[sulen + 1] = ' '; memcpy(desc + sulen + 2, cert->fingerprint, srlen); desc[sulen + 2 + srlen] = 0; /* We're pinning the module by being linked against it */ __module_get(public_key_subtype.owner); prep->type_data[0] = &public_key_subtype; prep->type_data[1] = cert->fingerprint; prep->payload[0] = cert->pub; prep->description = desc; prep->quotalen = 100; /* We've finished with the certificate */ cert->pub = NULL; cert->fingerprint = NULL; desc = NULL; ret = 0; error_free_cert: x509_free_certificate(cert); return ret; }