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llcache: Support storing SSL certificate data

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In order to support persisting SSL data we first have to store it
and support catching up new users.

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
This commit is contained in:
Daniel Silverstone 2019-11-30 11:41:19 +00:00
parent 2277d69ba1
commit f49654cfc5
1 changed files with 68 additions and 3 deletions
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71
content/llcache.c
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@ -175,6 +175,9 @@ struct llcache_object {
size_t source_len; /**< Byte length of source data */
size_t source_alloc; /**< Allocated size of source buffer */
size_t ssl_cert_count; /**< The number of SSL certificates stored */
struct ssl_cert_info *ssl_certs; /**< SSL certificate information if count is non-zero */
llcache_store_state store_state; /**< where the data for the object is stored */
llcache_object_user *users; /**< List of users */
@ -966,6 +969,12 @@ static nserror llcache_object_destroy(llcache_object *object)
NSLOG(llcache, DEBUG, "Destroying object %p, %s", object,
nsurl_access(object->url));
if (object->ssl_cert_count != 0) {
free(object->ssl_certs);
object->ssl_certs = NULL;
object->ssl_cert_count = 0;
}
if (object->source_data != NULL) {
if (object->store_state == LLCACHE_STATE_DISC) {
guit->llcache->release(object->url, BACKING_STORE_NONE);
@ -2916,9 +2925,17 @@ static void llcache_fetch_callback(const fetch_msg *msg, void *p)
case FETCH_CERTS:
/* Certificate information from the fetch */
/** \todo CERTS - Should we persist this on the object and
* then catch up new users etc?
*/
/* Persist the data onto our object */
object->ssl_certs = calloc(sizeof(struct ssl_cert_info),
msg->data.certs.num_certs);
if (object->ssl_certs != NULL) {
object->ssl_cert_count = msg->data.certs.num_certs;
memcpy(object->ssl_certs, msg->data.certs.certs,
sizeof(struct ssl_cert_info) * object->ssl_cert_count);
}
/* Now pass on the event */
event.type = LLCACHE_EVENT_GOT_CERTS;
event.data.certs.certs = msg->data.certs.certs;
event.data.certs.num = msg->data.certs.num_certs;
@ -3122,6 +3139,40 @@ static nserror llcache_object_notify_users(llcache_object *object)
if (handle->state == LLCACHE_FETCH_INIT &&
objstate > LLCACHE_FETCH_INIT) {
handle->state = LLCACHE_FETCH_HEADERS;
/* Emit any certificate data we hold */
if (object->ssl_cert_count > 0) {
event.type = LLCACHE_EVENT_GOT_CERTS;
event.data.certs.certs = object->ssl_certs;
event.data.certs.num = object->ssl_cert_count;
error = handle->cb(handle, &event, handle->pw);
} else {
error = NSERROR_OK;
}
if (user->queued_for_delete) {
next_user = user->next;
llcache_object_remove_user(object, user);
llcache_object_user_destroy(user);
if (error != NSERROR_OK)
return error;
continue;
} else if (error == NSERROR_NEED_DATA) {
/* User requested replay */
handle->state = LLCACHE_FETCH_HEADERS;
/* Continue with the next user -- we'll
* reemit the event next time round */
user->iterator_target = false;
next_user = user->next;
llcache_users_not_caught_up();
continue;
} else if (error != NSERROR_OK) {
user->iterator_target = false;
return error;
}
}
/* User: HEADERS, Obj: DATA, COMPLETE => User->DATA */
@ -3315,6 +3366,18 @@ llcache_object_snapshot(llcache_object *object, llcache_object **snapshot)
}
}
if (object->ssl_cert_count != 0) {
newobj->ssl_certs = calloc(sizeof(struct ssl_cert_info),
object->ssl_cert_count);
if (newobj->ssl_certs == NULL) {
llcache_object_destroy(newobj);
return NSERROR_NOMEM;
}
memcpy(newobj->ssl_certs, object->ssl_certs,
sizeof(struct ssl_cert_info) * object->ssl_cert_count);
newobj->ssl_cert_count = object->ssl_cert_count;
}
newobj->fetch.state = LLCACHE_FETCH_COMPLETE;
*snapshot = newobj;
@ -3352,6 +3415,8 @@ total_object_size(llcache_object *object)
}
}
tot += object->ssl_cert_count * sizeof(struct ssl_cert_info);
return tot;
}