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/* jmap_push.c -- Routines for handling JMAP Push API requests
*
* Copyright (c) 1994-2021 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include <config.h>
#include <limits.h>
#include <syslog.h>
#include <time.h>
#include "jmap_push.h"
int jmap_push_poll = 0;
static const struct datatype_t {
const char *name;
size_t offset;
} dataTypes[] = {
{ "Mailbox", offsetof(struct mboxname_counters, mailfoldersmodseq) },
{ "Email", offsetof(struct mboxname_counters, mailmodseq) },
{ "EmailSubmission", offsetof(struct mboxname_counters, submissionmodseq) },
{ "Calendar", offsetof(struct mboxname_counters, caldavfoldersmodseq) },
{ "CalendarEvent", offsetof(struct mboxname_counters, caldavmodseq) },
{ "Contact", offsetof(struct mboxname_counters, carddavmodseq) },
{ "Note", offsetof(struct mboxname_counters, notesmodseq) },
{ "SieveScript", offsetof(struct mboxname_counters, sievemodseq) },
{ NULL, 0 }
};
EXPORTED jmap_push_ctx_t *jmap_push_init(struct transaction_t *txn,
const char *accountid,
strarray_t *types, modseq_t lastmodseq,
prot_waiteventcallback_t *ev)
{
jmap_push_ctx_t *jpush = (jmap_push_ctx_t *) txn->push_ctx;
struct mboxname_counters cur_counters;
const struct datatype_t *dtype;
if (!jpush) {
jpush = xzmalloc(sizeof(jmap_push_ctx_t));
jpush->accountid = xstrdup(accountid);
jpush->inboxname = mboxname_user_mbox(jpush->accountid, NULL);
}
if (lastmodseq == ULLONG_MAX) {
if (mboxname_read_counters(jpush->inboxname, &cur_counters)) {
/* Something went wrong */
jmap_push_done(txn);
return NULL;
}
}
/* Initialize our tracking modseqs to the maximum value */
for (dtype = dataTypes; dtype->name; dtype++) {
modseq_t *modseq =
(modseq_t *)((size_t) &jpush->counters + dtype->offset);
*modseq = ULLONG_MAX;
}
/* Set the start modseq for the specified types */
int i;
for (i = 0; i < strarray_size(types); i++) {
const char *type = strarray_nth(types, i);
for (dtype = dataTypes; dtype->name; dtype++) {
if (!strcmpsafe(type, dtype->name) || !strcmpsafe(type, "*")) {
modseq_t *modseq =
(modseq_t *)((size_t) &jpush->counters + dtype->offset);
if (lastmodseq == ULLONG_MAX) {
modseq_t *cur_modseq =
(modseq_t *)((size_t) &cur_counters + dtype->offset);
*modseq = *cur_modseq;
}
else {
*modseq = lastmodseq;
}
if (*type != '*') break;
}
}
}
if (!jpush->wait) {
/* Schedule our first update */
jpush->wait = prot_addwaitevent(txn->conn->pin,
time(NULL) + jmap_push_poll, ev, txn);
}
txn->push_ctx = jpush;
ptrarray_add(&txn->done_callbacks, &jmap_push_done);
return jpush;
}
EXPORTED void jmap_push_done(struct transaction_t *txn)
{
jmap_push_ctx_t *jpush = (jmap_push_ctx_t *) txn->push_ctx;
if (!jpush) return;
if (jpush->wait) prot_removewaitevent(txn->conn->pin, jpush->wait);
free(jpush->accountid);
free(jpush->inboxname);
buf_free(&jpush->buf);
free(jpush);
txn->push_ctx = NULL;
}
EXPORTED json_t *jmap_push_get_state(jmap_push_ctx_t *jpush)
{
struct mboxname_counters cur_counters;
struct buf *buf = &jpush->buf;
json_t *jstate = NULL;
if (mboxname_read_counters(jpush->inboxname, &cur_counters)) {
/* Something went wrong - don't reschedule */
xsyslog(LOG_NOTICE, "Failed to read counters",
"accountid=<%s>", jpush->accountid);
return NULL;
}
/* See if anything has changed */
json_t *changed = json_object();
const struct datatype_t *dtype;
for (dtype = dataTypes; dtype->name; dtype++) {
modseq_t *modseq =
(modseq_t *)((size_t) &jpush->counters + dtype->offset);
modseq_t *cur_modseq =
(modseq_t *)((size_t) &cur_counters + dtype->offset);
if (*modseq < *cur_modseq) {
*modseq = *cur_modseq;
buf_reset(buf);
buf_printf(buf, MODSEQ_FMT, *modseq);
json_object_set_new(changed, dtype->name, json_string(buf_cstring(buf)));
}
}
jpush->counters.highestmodseq = cur_counters.highestmodseq;
if (json_object_size(changed)) {
jstate = json_pack("{ s:s s:{ s:o } }",
"@type", "StateChange",
"changed", jpush->accountid, changed);
}
else {
json_decref(changed);
}
return jstate;
}
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