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Merge pull request #1591 from paulfariello/fix/omemo-devicelist-access-model

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Fix OMEMO devicelist access model by reconfiguring it
This commit is contained in:
Michael Vetter 2021-08-20 15:57:03 +02:00 committed by GitHub
commit 1d08d8ccf0
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3 changed files with 140 additions and 22 deletions
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160
src/xmpp/omemo.c
View File

@ -47,12 +47,13 @@
#include "omemo/omemo.h"
static int _omemo_receive_devicelist(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_devicelist_publish_result(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_devicelist_configure_submit(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_devicelist_configure_result(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_bundle_publish_result(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_bundle_publish_configure(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_bundle_publish_configure_result(xmpp_stanza_t* const stanza, void* const userdata);
static int _omemo_device_list_publish_result(xmpp_stanza_t* const stanza, void* const userdata);
void
omemo_devicelist_subscribe(void)
{
@ -73,12 +74,30 @@ omemo_devicelist_publish(GList* device_list)
stanza_attach_publish_options(ctx, iq, "pubsub#access_model", "open");
}
iq_id_handler_add(xmpp_stanza_get_id(iq), _omemo_device_list_publish_result, NULL, NULL);
iq_id_handler_add(xmpp_stanza_get_id(iq), _omemo_devicelist_publish_result, NULL, NULL);
iq_send_stanza(iq);
xmpp_stanza_release(iq);
}
void
omemo_devicelist_configure(void)
{
xmpp_ctx_t* const ctx = connection_get_ctx();
char* id = connection_create_stanza_id();
Jid* jid = jid_create(connection_get_fulljid());
xmpp_stanza_t* iq = stanza_create_pubsub_configure_request(ctx, id, jid->barejid, STANZA_NS_OMEMO_DEVICELIST);
iq_id_handler_add(id, _omemo_devicelist_configure_submit, NULL, NULL);
iq_send_stanza(iq);
xmpp_stanza_release(iq);
free(id);
jid_destroy(jid);
}
void
omemo_devicelist_request(const char* const jid)
{
@ -440,8 +459,24 @@ out:
static int
_omemo_receive_devicelist(xmpp_stanza_t* const stanza, void* const userdata)
{
GList* device_list = NULL;
const char* from = xmpp_stanza_get_attribute(stanza, STANZA_ATTR_FROM);
const char* type = xmpp_stanza_get_type(stanza);
GList* device_list = NULL;
if (g_strcmp0(type, STANZA_TYPE_ERROR) == 0) {
log_error("[OMEMO] can't get OMEMO device list");
xmpp_stanza_t* error = xmpp_stanza_get_child_by_name(stanza, "error");
if (!error) {
log_error("[OMEMO] missing error element in device list response");
return 1;
}
const char* code = xmpp_stanza_get_attribute(error, "code");
if (g_strcmp0(code, "404") == 0) {
goto out;
}
}
xmpp_stanza_t* root = NULL;
xmpp_stanza_t* event = xmpp_stanza_get_child_by_ns(stanza, STANZA_NS_PUBSUB_EVENT);
@ -485,7 +520,7 @@ _omemo_receive_devicelist(xmpp_stanza_t* const stanza, void* const userdata)
log_warning("[OMEMO] User %s has a non 'current' device item list: %s.", from, xmpp_stanza_get_id(first));
item = first;
} else {
return 1;
goto out;
}
xmpp_stanza_t* list = xmpp_stanza_get_child_by_ns(item, STANZA_NS_OMEMO);
@ -507,11 +542,108 @@ _omemo_receive_devicelist(xmpp_stanza_t* const stanza, void* const userdata)
}
}
out:
omemo_set_device_list(from, device_list);
return 1;
}
static int
_omemo_devicelist_publish_result(xmpp_stanza_t* const stanza, void* const userdata)
{
const char* type = xmpp_stanza_get_type(stanza);
if (g_strcmp0(type, STANZA_TYPE_ERROR) == 0) {
log_error("[OMEMO] Publishing device list failed");
xmpp_stanza_t *error = xmpp_stanza_get_child_by_name(stanza, "error");
if (!error) {
log_error("[OMEMO] Missing error element in device list publication result");
return 0;
}
xmpp_stanza_t *pubsub_error = xmpp_stanza_get_child_by_ns(error, STANZA_NS_PUBSUB_ERROR);
if (!pubsub_error) {
log_error("[OMEMO] Unknown error while publishing our own device list");
cons_show_error("Unknown error while publishing our own device list");
return 0;
}
if (g_strcmp0(xmpp_stanza_get_name(pubsub_error), "precondition-not-met") == 0) {
static gboolean reconfigured = false;
if (!reconfigured) {
reconfigured = true;
cons_show_error("Unable to publish own OMEMO device list, reconfiguring node");
log_error("[OMEMO] Unable to publish own OMEMO device list, reconfiguring node");
omemo_devicelist_configure();
} else {
cons_show_error("Unable to publish own OMEMO device list, previous reconfiguration failed. Giving up.");
log_error("[OMEMO] Unable to publish own OMEMO device list, previous reconfiguration failed. Giving up.");
}
}
}
return 0;
}
static int
_omemo_devicelist_configure_submit(xmpp_stanza_t* const stanza, void* const userdata)
{
log_debug("[OMEMO] _omemo_devicelist_configure_submit()");
xmpp_stanza_t* pubsub = xmpp_stanza_get_child_by_name(stanza, "pubsub");
if (!pubsub) {
log_error("[OMEMO] The stanza doesn't contain a 'pubsub' child");
return 0;
}
xmpp_stanza_t* configure = xmpp_stanza_get_child_by_name(pubsub, STANZA_NAME_CONFIGURE);
if (!configure) {
log_error("[OMEMO] The stanza doesn't contain a 'configure' child");
return 0;
}
xmpp_stanza_t* x = xmpp_stanza_get_child_by_name(configure, "x");
if (!x) {
log_error("[OMEMO] The stanza doesn't contain an 'x' child");
return 0;
}
DataForm* form = form_create(x);
form_set_value(form, "pubsub#access_model", "open");
xmpp_ctx_t* const ctx = connection_get_ctx();
Jid* jid = jid_create(connection_get_fulljid());
char* id = connection_create_stanza_id();
xmpp_stanza_t* iq = stanza_create_pubsub_configure_submit(ctx, id, jid->barejid, STANZA_NS_OMEMO_DEVICELIST, form);
iq_id_handler_add(id, _omemo_devicelist_configure_result, NULL, NULL);
iq_send_stanza(iq);
xmpp_stanza_release(iq);
free(id);
jid_destroy(jid);
return 0;
}
static int
_omemo_devicelist_configure_result(xmpp_stanza_t* const stanza, void* const userdata)
{
const char* type = xmpp_stanza_get_type(stanza);
if (g_strcmp0(type, STANZA_TYPE_ERROR) == 0) {
log_error("[OMEMO] cannot configure device list to an open access model: Result error");
return 0;
}
log_debug("[OMEMO] node configured");
// Try to publish
char* barejid = connection_get_barejid();
omemo_devicelist_request(barejid);
free(barejid);
return 0;
}
static int
_omemo_bundle_publish_result(xmpp_stanza_t* const stanza, void* const userdata)
@ -572,11 +704,7 @@ _omemo_bundle_publish_configure(xmpp_stanza_t* const stanza, void* const userdat
}
DataForm* form = form_create(x);
char* tag = g_hash_table_lookup(form->var_to_tag, "pubsub#access_model");
if (!tag) {
log_error("[OMEMO] cannot configure bundle to an open access model");
return 0;
}
form_set_value(form, "pubsub#access_model", "open");
xmpp_ctx_t* const ctx = connection_get_ctx();
Jid* jid = jid_create(connection_get_fulljid());
@ -612,15 +740,3 @@ _omemo_bundle_publish_configure_result(xmpp_stanza_t* const stanza, void* const
return 0;
}
static int
_omemo_device_list_publish_result(xmpp_stanza_t* const stanza, void* const userdata)
{
const char* type = xmpp_stanza_get_type(stanza);
if (g_strcmp0(type, STANZA_TYPE_ERROR) == 0) {
cons_show_error("Unable to publish own OMEMO device list");
log_error("[OMEMO] Publishing device list failed");
return 0;
}
return 0;
}

1
src/xmpp/omemo.h
View File

@ -38,6 +38,7 @@
#include "xmpp/iq.h"
void omemo_devicelist_subscribe(void);
void omemo_devicelist_configure_and_request(void);
void omemo_devicelist_publish(GList* device_list);
void omemo_devicelist_request(const char* const jid);
void omemo_bundle_publish(gboolean first);

1
src/xmpp/stanza.h
View File

@ -216,6 +216,7 @@
#define STANZA_NS_PUBSUB "http://jabber.org/protocol/pubsub"
#define STANZA_NS_PUBSUB_OWNER "http://jabber.org/protocol/pubsub#owner"
#define STANZA_NS_PUBSUB_EVENT "http://jabber.org/protocol/pubsub#event"
#define STANZA_NS_PUBSUB_ERROR "http://jabber.org/protocol/pubsub#errors"
#define STANZA_NS_CARBONS "urn:xmpp:carbons:2"
#define STANZA_NS_HINTS "urn:xmpp:hints"
#define STANZA_NS_FORWARD "urn:xmpp:forward:0"