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weechat-xmpp/slack-workspace.c

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#include <libwebsockets.h>
#include <json.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include "weechat-plugin.h"
#include "slack.h"
#include "slack-config.h"
#include "slack-input.h"
#include "slack-workspace.h"
#include "slack-api.h"
#include "slack-request.h"
#include "slack-user.h"
#include "slack-channel.h"
#include "slack-buffer.h"
struct t_slack_workspace *slack_workspaces = NULL;
struct t_slack_workspace *last_slack_workspace = NULL;
char *slack_workspace_options[SLACK_WORKSPACE_NUM_OPTIONS][2] =
{ { "token", "" },
};
static const char *const endpoint = "/api/rtm.connect?"
"token=%s&batch_presence_aware=true&presence_sub=false&";
static inline int json_valid(json_object *object, struct t_slack_workspace *workspace)
{
if (!object)
{
weechat_printf(
workspace->buffer,
_("%s%s: error requesting websocket: unexpected response from server"),
weechat_prefix("error"), SLACK_PLUGIN_NAME);
return 0;
}
return 1;
}
static int callback_http(struct lws *wsi, enum lws_callback_reasons reason,
void *user, void *in, size_t len)
{
struct t_slack_workspace *workspace = (struct t_slack_workspace *)user;
int status;
switch (reason)
{
/* because we are protocols[0] ... */
case LWS_CALLBACK_CLIENT_CONNECTION_ERROR:
weechat_printf(
workspace->buffer,
_("%s%s: error connecting to slack: %s"),
weechat_prefix("error"), SLACK_PLUGIN_NAME,
in ? (char *)in : "(null)");
workspace->client_wsi = NULL;
break;
case LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP:
status = lws_http_client_http_response(wsi);
weechat_printf(
workspace->buffer,
_("%s%s: requesting a websocket... (%d)"),
weechat_prefix("network"), SLACK_PLUGIN_NAME,
status);
break;
/* chunks of chunked content, with header removed */
case LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ:
{
struct t_json_chunk *new_chunk, *last_chunk;
new_chunk = malloc(sizeof(*new_chunk));
new_chunk->data = malloc((1024 * sizeof(char)) + 1);
new_chunk->data[0] = '\0';
new_chunk->next = NULL;
strncat(new_chunk->data, in, (int)len);
if (workspace->json_chunks)
{
for (last_chunk = workspace->json_chunks; last_chunk->next;
last_chunk = last_chunk->next);
last_chunk->next = new_chunk;
}
else
{
workspace->json_chunks = new_chunk;
}
}
return 0; /* don't passthru */
/* uninterpreted http content */
case LWS_CALLBACK_RECEIVE_CLIENT_HTTP:
{
char buffer[1024 + LWS_PRE];
char *px = buffer + LWS_PRE;
int lenx = sizeof(buffer) - LWS_PRE;
if (lws_http_client_read(wsi, &px, &lenx) < 0)
return -1;
}
return 0; /* don't passthru */
case LWS_CALLBACK_COMPLETED_CLIENT_HTTP:
{
int chunk_count, i;
char *json_string;
json_object *response, *ok, *error, *self, *team, *url;
json_object *id, *name, *domain;
struct t_json_chunk *chunk_ptr;
chunk_count = 0;
if (workspace->json_chunks)
{
chunk_count++;
for (chunk_ptr = workspace->json_chunks; chunk_ptr->next;
chunk_ptr = chunk_ptr->next)
{
chunk_count++;
}
}
json_string = malloc((1024 * sizeof(char) * chunk_count) + 1);
json_string[0] = '\0';
chunk_ptr = workspace->json_chunks;
for (i = 0; i < chunk_count; i++)
{
strncat(json_string, chunk_ptr->data, 1024);
chunk_ptr = chunk_ptr->next;
free(workspace->json_chunks->data);
free(workspace->json_chunks);
workspace->json_chunks = chunk_ptr;
}
weechat_printf(
workspace->buffer,
_("%s%s: got response: %s"),
weechat_prefix("network"), SLACK_PLUGIN_NAME,
json_string);
response = json_tokener_parse(json_string);
ok = json_object_object_get(response, "ok");
if (!json_valid(ok, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
if(json_object_get_boolean(ok))
{
self = json_object_object_get(response, "self");
if (!json_valid(self, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
else
{
id = json_object_object_get(self, "id");
if (!json_valid(id, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
workspace->user = strdup(json_object_get_string(id));
name = json_object_object_get(self, "name");
if (!json_valid(name, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
workspace->nick = strdup(json_object_get_string(name));
}
team = json_object_object_get(response, "team");
if (!json_valid(team, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
else
{
domain = json_object_object_get(team, "domain");
if (!json_valid(domain, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
id = json_object_object_get(team, "id");
if (!json_valid(id, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
workspace->id = strdup(json_object_get_string(id));
name = json_object_object_get(team, "name");
if (!json_valid(name, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
workspace->name = strdup(json_object_get_string(name));
}
url = json_object_object_get(response, "url");
if (!json_valid(url, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
workspace->ws_url = strdup(json_object_get_string(url));
}
else
{
error = json_object_object_get(response, "error");
if (!json_valid(error, workspace))
{
json_object_put(response);
free(json_string);
return 0;
}
weechat_printf(
workspace->buffer,
_("%s%s: failed to request websocket: %s"),
weechat_prefix("error"), SLACK_PLUGIN_NAME,
json_object_get_string(error));
}
json_object_put(response);
free(json_string);
}
/* fallthrough */
case LWS_CALLBACK_CLOSED_CLIENT_HTTP:
workspace->client_wsi = NULL;
/* Does not doing this cause a leak?
lws_cancel_service(lws_get_context(wsi));*/ /* abort poll wait */
break;
default:
break;
}
return lws_callback_http_dummy(wsi, reason, user, in, len);
}
static const struct lws_protocols protocols[] = {
{
"http",
callback_http,
0,
0,
},
{ NULL, NULL, 0, 0 }
};
struct t_slack_workspace *slack_workspace_search(const char *workspace_domain)
{
struct t_slack_workspace *ptr_workspace;
if (!workspace_domain)
return NULL;
for (ptr_workspace = slack_workspaces; ptr_workspace;
ptr_workspace = ptr_workspace->next_workspace)
{
if (strcmp(ptr_workspace->domain, workspace_domain) == 0)
return ptr_workspace;
}
/* workspace not found */
return NULL;
}
struct t_slack_workspace *slack_workspace_casesearch (const char *workspace_domain)
{
struct t_slack_workspace *ptr_workspace;
if (!workspace_domain)
return NULL;
for (ptr_workspace = slack_workspaces; ptr_workspace;
ptr_workspace = ptr_workspace->next_workspace)
{
if (weechat_strcasecmp (ptr_workspace->domain, workspace_domain) == 0)
return ptr_workspace;
}
/* workspace not found */
return NULL;
}
int slack_workspace_search_option(const char *option_name)
{
int i;
if (!option_name)
return -1;
for (i = 0; i < SLACK_WORKSPACE_NUM_OPTIONS; i++)
{
if (weechat_strcasecmp(slack_workspace_options[i][0], option_name) == 0)
return i;
}
/* workspace option not found */
return -1;
}
struct t_slack_workspace *slack_workspace_alloc(const char *domain)
{
struct t_slack_workspace *new_workspace;
int i, length;
char *option_name;
if (slack_workspace_casesearch(domain))
return NULL;
/* alloc memory for new workspace */
new_workspace = malloc(sizeof(*new_workspace));
if (!new_workspace)
{
weechat_printf(NULL,
_("%s%s: error when allocating new workspace"),
weechat_prefix("error"), SLACK_PLUGIN_NAME);
return NULL;
}
/* add new workspace to queue */
new_workspace->prev_workspace = last_slack_workspace;
new_workspace->next_workspace = NULL;
if (last_slack_workspace)
last_slack_workspace->next_workspace = new_workspace;
else
slack_workspaces = new_workspace;
last_slack_workspace = new_workspace;
/* set properties */
new_workspace->id = NULL;
new_workspace->name = NULL;
/* set name */
new_workspace->domain = strdup(domain);
/* internal vars */
new_workspace->reloading_from_config = 0;
new_workspace->reloaded_from_config = 0;
new_workspace->is_connected = 0;
new_workspace->disconnected = 0;
new_workspace->idx = 0;
new_workspace->uri = NULL;
new_workspace->ws_url = NULL;
new_workspace->client_wsi = NULL;
new_workspace->context = NULL;
new_workspace->json_chunks = NULL;
new_workspace->requests = NULL;
new_workspace->last_request = NULL;
new_workspace->user = NULL;
new_workspace->nick = NULL;
new_workspace->buffer = NULL;
new_workspace->buffer_as_string = NULL;
new_workspace->users = NULL;
new_workspace->last_user = NULL;
new_workspace->channels = NULL;
new_workspace->last_channel = NULL;
/* create options with null value */
for (i = 0; i < SLACK_WORKSPACE_NUM_OPTIONS; i++)
{
length = strlen(new_workspace->domain) + 1 +
strlen(slack_workspace_options[i][0]) +
512 + /* inherited option name(slack.workspace_default.xxx) */
1;
option_name = malloc(length);
if (option_name)
{
snprintf(option_name, length, "%s.%s << slack.workspace_default.%s",
new_workspace->domain,
slack_workspace_options[i][0],
slack_workspace_options[i][0]);
new_workspace->options[i] = slack_config_workspace_new_option(
slack_config_file,
slack_config_section_workspace,
i,
option_name,
NULL,
NULL,
1,
&slack_config_workspace_check_value_cb,
slack_workspace_options[i][0],
NULL,
&slack_config_workspace_change_cb,
slack_workspace_options[i][0],
NULL);
slack_config_workspace_change_cb(slack_workspace_options[i][0], NULL,
new_workspace->options[i]);
free(option_name);
}
}
return new_workspace;
}
void slack_workspace_free_data(struct t_slack_workspace *workspace)
{
int i;
if (!workspace)
return;
/* free linked lists */
/*
for (i = 0; i < IRC_SERVER_NUM_OUTQUEUES_PRIO; i++)
{
slack_workspace_outqueue_free_all(workspace, i);
}
slack_redirect_free_all(workspace);
slack_notify_free_all(workspace);
*/
slack_channel_free_all(workspace);
slack_user_free_all(workspace);
/* free hashtables */
/*
weechat_hashtable_free(workspace->join_manual);
weechat_hashtable_free(workspace->join_channel_key);
weechat_hashtable_free(workspace->join_noswitch);
*/
/* free workspace data */
for (i = 0; i < SLACK_WORKSPACE_NUM_OPTIONS; i++)
{
if (workspace->options[i])
weechat_config_option_free(workspace->options[i]);
}
if (workspace->id)
free(workspace->id);
if (workspace->name)
free(workspace->name);
if (workspace->domain)
free(workspace->domain);
if (workspace->uri)
free(workspace->uri);
if (workspace->ws_url)
free(workspace->ws_url);
if (workspace->context)
lws_context_destroy(workspace->context);
while (workspace->json_chunks)
{
struct t_json_chunk *chunk_ptr = workspace->json_chunks->next;
free(workspace->json_chunks->data);
free(workspace->json_chunks);
workspace->json_chunks = chunk_ptr;
}
while (workspace->requests)
{
struct t_slack_request *request_ptr = workspace->requests->next_request;
workspace->requests->client_wsi = NULL;
if (workspace->requests->context)
{
lws_context_destroy(workspace->requests->context);
workspace->requests->context = NULL;
if (workspace->requests->uri)
{
free(workspace->requests->uri);
workspace->requests->uri = NULL;
}
}
free(workspace->requests);
workspace->requests = request_ptr;
}
if (workspace->user)
free(workspace->user);
if (workspace->nick)
free(workspace->nick);
if (workspace->buffer_as_string)
free(workspace->buffer_as_string);
slack_channel_free_all(workspace);
slack_user_free_all(workspace);
}
void slack_workspace_free(struct t_slack_workspace *workspace)
{
struct t_slack_workspace *new_slack_workspaces;
if (!workspace)
return;
/*
* close workspace buffer (and all channels/privates)
* (only if we are not in a /upgrade, because during upgrade we want to
* keep connections and closing workspace buffer would disconnect from workspace)
*/
if (workspace->buffer)
weechat_buffer_close(workspace->buffer);
/* remove workspace from queue */
if (last_slack_workspace == workspace)
last_slack_workspace = workspace->prev_workspace;
if (workspace->prev_workspace)
{
(workspace->prev_workspace)->next_workspace = workspace->next_workspace;
new_slack_workspaces = slack_workspaces;
}
else
new_slack_workspaces = workspace->next_workspace;
if (workspace->next_workspace)
(workspace->next_workspace)->prev_workspace = workspace->prev_workspace;
slack_workspace_free_data(workspace);
free(workspace);
slack_workspaces = new_slack_workspaces;
}
void slack_workspace_free_all()
{
/* for each workspace in memory, remove it */
while (slack_workspaces)
{
slack_workspace_free(slack_workspaces);
}
}
void slack_workspace_disconnect(struct t_slack_workspace *workspace,
int reconnect)
{
(void) reconnect;
struct t_slack_channel *ptr_channel;
(void) ptr_channel;
if (workspace->is_connected)
{
/*
* remove all nicks and write disconnection message on each
* channel/private buffer
*/
slack_user_free_all(workspace);
weechat_nicklist_remove_all(workspace->buffer);
for (ptr_channel = workspace->channels; ptr_channel;
ptr_channel = ptr_channel->next_channel)
{
weechat_nicklist_remove_all(ptr_channel->buffer);
weechat_printf(
ptr_channel->buffer,
_("%s%s: disconnected from workspace"),
weechat_prefix("network"), SLACK_PLUGIN_NAME);
}
/* remove away status on workspace buffer */
//weechat_buffer_set(workspace->buffer, "localvar_del_away", "");
}
slack_workspace_close_connection(workspace);
if (workspace->buffer)
{
weechat_printf(
workspace->buffer,
_("%s%s: disconnected from workspace"),
weechat_prefix ("network"), SLACK_PLUGIN_NAME);
}
/*
workspace->current_retry = 0;
if (switch_address)
slack_workspace_switch_address(workspace, 0);
else
slack_workspace_set_index_current_address(workspace, 0);
if (workspace->nick_modes)
{
free (workspace->nick_modes);
workspace->nick_modes = NULL;
weechat_bar_item_update ("input_prompt");
weechat_bar_item_update ("slack_nick_modes");
}
workspace->cap_away_notify = 0;
workspace->cap_account_notify = 0;
workspace->cap_extended_join = 0;
workspace->is_away = 0;
workspace->away_time = 0;
workspace->lag = 0;
workspace->lag_displayed = -1;
workspace->lag_check_time.tv_sec = 0;
workspace->lag_check_time.tv_usec = 0;
workspace->lag_next_check = time (NULL) +
weechat_config_integer (slack_config_network_lag_check);
workspace->lag_last_refresh = 0;
slack_workspace_set_lag (workspace);
workspace->monitor = 0;
workspace->monitor_time = 0;
if (reconnect
&& IRC_SERVER_OPTION_BOOLEAN(workspace, IRC_SERVER_OPTION_AUTORECONNECT))
slack_workspace_reconnect_schedule(workspace);
else
{
workspace->reconnect_delay = 0;
workspace->reconnect_start = 0;
}
*/
/* discard current nick if no reconnection asked */
/*
if (!reconnect && workspace->nick)
slack_workspace_set_nick(workspace, NULL);
slack_workspace_set_buffer_title(workspace);
workspace->disconnected = 1;
*/
/* send signal "slack_workspace_disconnected" with workspace name */
/*
(void) weechat_hook_signal_send("slack_workspace_disconnected",
WEECHAT_HOOK_SIGNAL_STRING, workspace->name);
*/
}
void slack_workspace_disconnect_all()
{
struct t_slack_workspace *ptr_workspace;
for (ptr_workspace = slack_workspaces; ptr_workspace;
ptr_workspace = ptr_workspace->next_workspace)
{
slack_workspace_disconnect(ptr_workspace, 0);
}
}
struct t_gui_buffer *slack_workspace_create_buffer(struct t_slack_workspace *workspace)
{
char buffer_name[256], charset_modifier[256];
snprintf(buffer_name, sizeof(buffer_name),
"workspace.%s", workspace->domain);
workspace->buffer = weechat_buffer_new(buffer_name,
&slack_input_data_cb, NULL, NULL,
&slack_buffer_close_cb, NULL, NULL);
if (!workspace->buffer)
return NULL;
if (!weechat_buffer_get_integer(workspace->buffer, "short_name_is_set"))
weechat_buffer_set(workspace->buffer, "short_name", workspace->domain);
weechat_buffer_set(workspace->buffer, "localvar_set_type", "server");
weechat_buffer_set(workspace->buffer, "localvar_set_server", workspace->domain);
weechat_buffer_set(workspace->buffer, "localvar_set_channel", workspace->domain);
snprintf(charset_modifier, sizeof (charset_modifier),
"workspace.%s", workspace->domain);
weechat_buffer_set(workspace->buffer, "localvar_set_charset_modifier",
charset_modifier);
weechat_buffer_set(workspace->buffer, "title",
(workspace->name) ? workspace->name : "");
weechat_buffer_set(workspace->buffer, "nicklist", "1");
weechat_buffer_set(workspace->buffer, "nicklist_display_groups", "0");
weechat_buffer_set_pointer(workspace->buffer, "nicklist_callback",
&slack_buffer_nickcmp_cb);
weechat_buffer_set_pointer(workspace->buffer, "nicklist_callback_pointer",
workspace);
return workspace->buffer;
}
void slack_workspace_close_connection(struct t_slack_workspace *workspace)
{
struct t_slack_request *ptr_request;
workspace->is_connected = 0;
workspace->client_wsi = NULL;
workspace->context = NULL;
for (ptr_request = workspace->requests; ptr_request;
ptr_request = ptr_request->next_request)
{
if (ptr_request->context)
{
struct t_slack_request *new_requests;
lws_context_destroy(ptr_request->context);
ptr_request->context = NULL;
if (ptr_request->uri)
{
free(ptr_request->uri);
ptr_request->uri = NULL;
}
/* remove request from requests list */
if (workspace->last_request == ptr_request)
workspace->last_request = ptr_request->prev_request;
if (ptr_request->prev_request)
{
(ptr_request->prev_request)->next_request = ptr_request->next_request;
new_requests = workspace->requests;
}
else
new_requests = ptr_request->next_request;
if (ptr_request->next_request)
(ptr_request->next_request)->prev_request = ptr_request->prev_request;
workspace->requests = new_requests;
}
}
}
void slack_workspace_websocket_create(struct t_slack_workspace *workspace)
{
struct lws_context_creation_info info;
struct lws_client_connect_info i;
const char *token;
if (workspace->client_wsi)
{
weechat_printf(
workspace->buffer,
_("%s%s: error: a websocket already exists"),
weechat_prefix("error"), SLACK_PLUGIN_NAME);
return;
}
token = weechat_config_string(workspace->options[SLACK_WORKSPACE_OPTION_TOKEN]);
size_t urilen = snprintf(NULL, 0, endpoint, token) + 1;
workspace->uri = malloc(urilen);
snprintf(workspace->uri, urilen, endpoint, token);
memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
info.port = CONTEXT_PORT_NO_LISTEN; /* we do not run any server */
info.protocols = protocols;
workspace->context = lws_create_context(&info);
if (!workspace->context)
{
weechat_printf(
workspace->buffer,
_("%s%s: error connecting to slack: lws init failed"),
weechat_prefix("error"), SLACK_PLUGIN_NAME);
return;
}
else
{
weechat_printf(
workspace->buffer,
_("%s%s: contacting slack.com:443"),
weechat_prefix("network"), SLACK_PLUGIN_NAME);
}
memset(&i, 0, sizeof i); /* otherwise uninitialized garbage */
i.context = workspace->context;
i.ssl_connection = LCCSCF_USE_SSL;
i.port = 443;
i.address = "slack.com";
i.path = workspace->uri;
i.host = i.address;
i.origin = i.address;
i.method = "GET";
i.protocol = protocols[0].name;
i.pwsi = &workspace->client_wsi;
i.userdata = workspace;
lws_client_connect_via_info(&i);
workspace->is_connected = 1;
}
int slack_workspace_connect(struct t_slack_workspace *workspace)
{
workspace->disconnected = 0;
if (!workspace->buffer)
{
if (!slack_workspace_create_buffer(workspace))
return 0;
weechat_buffer_set(workspace->buffer, "display", "auto");
}
slack_workspace_close_connection(workspace);
slack_workspace_websocket_create(workspace);
return 1;
}
int slack_workspace_timer_cb(const void *pointer, void *data, int remaining_calls)
{
struct t_slack_workspace *ptr_workspace;
struct t_slack_request *ptr_request;
/* make C compiler happy */
(void) pointer;
(void) data;
(void) remaining_calls;
for (ptr_workspace = slack_workspaces; ptr_workspace;
ptr_workspace = ptr_workspace->next_workspace)
{
if (!ptr_workspace->is_connected)
continue;
for (ptr_request = ptr_workspace->requests; ptr_request;
ptr_request = ptr_request->next_request)
{
if (ptr_request->client_wsi)
{
lws_service(ptr_request->context, 0);
}
else if (ptr_request->context)
{
struct t_slack_request *new_requests;
lws_context_destroy(ptr_request->context);
ptr_request->context = NULL;
if (ptr_request->uri)
{
free(ptr_request->uri);
ptr_request->uri = NULL;
}
/* remove request from requests list */
if (ptr_workspace->last_request == ptr_request)
ptr_workspace->last_request = ptr_request->prev_request;
if (ptr_request->prev_request)
{
(ptr_request->prev_request)->next_request = ptr_request->next_request;
new_requests = ptr_workspace->requests;
}
else
new_requests = ptr_request->next_request;
if (ptr_request->next_request)
(ptr_request->next_request)->prev_request = ptr_request->prev_request;
ptr_workspace->requests = new_requests;
}
}
if (ptr_workspace->client_wsi)
{
lws_service(ptr_workspace->context, 0);
}
else if (ptr_workspace->context)
{
lws_context_destroy(ptr_workspace->context);
ptr_workspace->context = NULL;
if (ptr_workspace->uri)
{
free(ptr_workspace->uri);
ptr_workspace->uri = NULL;
}
if (ptr_workspace->ws_url)
{
slack_api_connect(ptr_workspace);
free(ptr_workspace->ws_url);
ptr_workspace->ws_url = NULL;
}
}
}
return WEECHAT_RC_OK;
}
void slack_workspace_register_request(struct t_slack_workspace *workspace,
struct t_slack_request *request)
{
request->prev_request = workspace->last_request;
request->next_request = NULL;
if (workspace->last_request)
(workspace->last_request)->next_request = request;
else
workspace->requests = request;
workspace->last_request = request;
}
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