int
ber_put_berval(
BerElement *ber,
struct berval *bv,
ber_tag_t tag )
{
assert( ber != NULL );
assert( LBER_VALID( ber ) );
if( bv == NULL || bv->bv_len == 0 ) {
return ber_put_ostring( ber, "", (ber_len_t) 0, tag );
}
return ber_put_ostring( ber, bv->bv_val, bv->bv_len, tag );
}
int
ber_put_string(
BerElement *ber,
LDAP_CONST char *str,
ber_tag_t tag )
{
assert( ber != NULL );
assert( str != NULL );
assert( LBER_VALID( ber ) );
return ber_put_ostring( ber, str, strlen( str ), tag );
}
/* void putString (in AUTF8String aString, in unsigned long aTag); */
NS_IMETHODIMP
nsLDAPBERElement::PutString(const nsACString &aString, uint32_t aTag,
uint32_t *aBytesWritten) {
// XXX if the string translation feature of the C SDK is ever used,
// this const_cast will break
int i = ber_put_ostring(mElement,
const_cast<char *>(PromiseFlatCString(aString).get()),
aString.Length(), aTag);
if (i < 0) {
return NS_ERROR_FAILURE;
}
*aBytesWritten = i;
return NS_OK;
}
/*
* auparse library callback that's called when an event is ready
*/
void
push_event(auparse_state_t * au, auparse_cb_event_t cb_event_type,
void *user_data)
{
int rc;
BerElement *ber;
int qualifier;
char timestamp[26];
char linkValue[ZOS_REMOTE_LINK_VALUE_SIZE];
char logString[ZOS_REMOTE_LOGSTRING_SIZE];
unsigned long linkValue_tmp;
if (cb_event_type != AUPARSE_CB_EVENT_READY)
return;
const au_event_t *e = auparse_get_timestamp(au);
if (e == NULL)
return;
/*
* we have an event. Each record will result in a different 'Item'
* (refer ASN.1 definition in zos-remote-ldap.h)
*/
/*
* Create a new BER element to encode the request
*/
ber = ber_alloc_t(LBER_USE_DER);
if (ber == NULL) {
log_err("Error allocating memory for BER element");
goto fatal;
}
/*
* Collect some information to fill in every item
*/
const char *node = auparse_get_node(au);
const char *orig_type = auparse_find_field(au, "type");
/* roll back event to get 'success' */
auparse_first_record(au);
const char *success = auparse_find_field(au, "success");
/* roll back event to get 'res' */
auparse_first_record(au);
const char *res = auparse_find_field(au, "res");
/* check if this event is a success or failure one */
if (success) {
if (strncmp(success, "0", 1) == 0 ||
strncmp(success, "no", 2) == 0)
qualifier = ZOS_REMOTE_QUALIF_FAIL;
else
qualifier = ZOS_REMOTE_QUALIF_SUCCESS;
} else if (res) {
if (strncmp(res, "0", 1) == 0
|| strncmp(res, "failed", 6) == 0)
qualifier = ZOS_REMOTE_QUALIF_FAIL;
else
qualifier = ZOS_REMOTE_QUALIF_SUCCESS;
} else
qualifier = ZOS_REMOTE_QUALIF_INFO;
/* get timestamp text */
ctime_r(&e->sec, timestamp);
timestamp[24] = '\0'; /* strip \n' */
/* prepare linkValue which will be used for every item */
linkValue_tmp = htonl(e->serial); /* padronize to use network
* byte order
*/
memset(&linkValue, 0, ZOS_REMOTE_LINK_VALUE_SIZE);
memcpy(&linkValue, &linkValue_tmp, sizeof(unsigned long));
/*
* Prepare the logString with some meaningful text
* We assume the first record type found is the
* 'originating' audit record
*/
sprintf(logString, "Linux (%s): type: %s", node, orig_type);
/*
* Start writing to BER element.
* There's only one field (version) out of the item sequence.
* Also open item sequence
*/
rc = ber_printf(ber, "{i{", ICTX_REQUESTVER);
if (rc < 0)
goto skip_event;
/*
* Roll back to first record and iterate through all records
*/
auparse_first_record(au);
do {
const char *type = auparse_find_field(au, "type");
if (type == NULL)
goto skip_event;
log_debug("got record: %s", auparse_get_record_text(au));
/*
* First field is item Version, same as global version
*/
rc = ber_printf(ber, "{i", ICTX_REQUESTVER);
/*
* Second field is the itemTag
* use our internal event counter, increasing it
*/
rc |= ber_printf(ber, "i", conf.counter++);
/*
* Third field is the linkValue
* using ber_put_ostring since it is not null-terminated
*/
rc |= ber_put_ostring(ber, linkValue,
ZOS_REMOTE_LINK_VALUE_SIZE,
LBER_OCTETSTRING);
/*
* Fourth field is the violation
* Don't have anything better yet to put here
*/
rc |= ber_printf(ber, "b", 0);
/*
* Fifth field is the event.
* FIXME: this might be the place to switch on the
* audit record type and map to a more meaningful
* SMF type 83, subtype 4 event here
*/
rc |= ber_printf(ber, "i", ZOS_REMOTE_EVENT_AUTHORIZATION);
/*
* Sixth field is the qualifier. We map 'success' or
* 'res' to this field
*/
rc |= ber_printf(ber, "i", qualifier);
/*
* Seventh field is the Class
* always use '@LINUX' for this version
* max size ZOS_REMOTE_CLASS_SIZE
*/
rc |= ber_printf(ber, "t", ASN1_IA5STRING_TAG);
rc |= ber_printf(ber, "s", "@LINUX");
/*
* Eighth field is the resource
* use the record type (name) as the resource
* max size ZOS_REMOTE_RESOURCE_SIZE
*/
rc |= ber_printf(ber, "t", ASN1_IA5STRING_TAG);
rc |= ber_printf(ber, "s", type);
/*
* Nineth field is the LogString
* we try to put something meaningful here
* we also start the relocations sequence
*/
rc |= ber_printf(ber, "t", ASN1_IA5STRING_TAG);
rc |= ber_printf(ber, "s{", logString);
/*
* Now we start adding the relocations.
* Let's add the timestamp as the first one
* so it's out of the field loop
*/
rc |= ber_printf(ber, "{i", ZOS_REMOTE_RELOC_TIMESTAMP);
rc |= ber_printf(ber, "t", ASN1_IA5STRING_TAG);
rc |= ber_printf(ber, "s}", timestamp);
/*
* Check that encoding is going OK until now
*/
if (rc < 0)
goto skip_event;
/*
* Now go to first field,
* and iterate through all fields
*/
auparse_first_field(au);
do {
/*
* we set a maximum of 1024 chars for
* relocation data (field=value pairs)
* Hopefuly this wont overflow too often
*/
char data[1024];
const char *name = auparse_get_field_name(au);
const char *value = auparse_interpret_field(au);
if (name == NULL || value == NULL)
goto skip_event;
/*
* First reloc field is the Relocation type
* We use 'OTHER' here since we don't have
* anything better
*/
rc |= ber_printf(ber, "{i", ZOS_REMOTE_RELOC_OTHER);
/*
* Second field is the relocation data
* We use a 'name=value' pair here
* Use up to 1023 chars (one char left for '\0')
*/
snprintf(data, 1023, "%s=%s", name, value);
rc |= ber_printf(ber, "t", ASN1_IA5STRING_TAG);
rc |= ber_printf(ber, "s}", data);
/*
* Check encoding status
*/
if (rc < 0)
goto skip_event;
} while (auparse_next_field(au) > 0);
/*
* After adding all relocations we are done with
* this item - finalize relocs and item
*/
rc |= ber_printf(ber, "}}");
/*
* Check if we are doing well with encoding
*/
if (rc < 0)
goto skip_event;
} while (auparse_next_record(au) > 0);
/*
* We have all items in - finalize item sequence & request
*/
rc |= ber_printf(ber, "}}");
/*
* Check if everything went alright with encoding
*/
if (rc < 0)
goto skip_event;
/*
* finally, enqueue request and let the other
* thread process it
*/
log_debug("Encoding done, enqueuing event");
enqueue(ber);
return;
skip_event:
log_warn("Warning - error encoding request, skipping event");
ber_free(ber, 1); /* free it since we're not enqueuing it */
return;
fatal:
log_err("Error - Fatal error while encoding request. Aborting");
stop = 1;
}
