mirror of
https://github.com/bqv/weechat-xmpp/
synced 2024-11-18 03:25:37 +00:00
268 lines
8.3 KiB
C
268 lines
8.3 KiB
C
#include <libwebsockets.h>
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#include <json.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../weechat-plugin.h"
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#include "../slack.h"
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#include "../slack-workspace.h"
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#include "../slack-request.h"
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#include "../slack-user.h"
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#include "../request/slack-request-chat-postmessage.h"
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static const char *const endpoint = "/api/chat.postMessage?"
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"token=%s&channel=%s&text=%s&"
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"as_user=true&link_names=true&mrkdwn=false&parse=full";
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static inline int json_valid(json_object *object, struct t_slack_workspace *workspace)
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{
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if (!object)
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{
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weechat_printf(
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workspace->buffer,
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_("%s%s: error posting message: unexpected response from server"),
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weechat_prefix("error"), SLACK_PLUGIN_NAME);
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//__asm__("int3");
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return 0;
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}
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return 1;
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}
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static const struct lws_protocols protocols[];
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static int callback_http(struct lws *wsi, enum lws_callback_reasons reason,
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void *user, void *in, size_t len)
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{
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struct t_slack_request *request = (struct t_slack_request *)user;
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struct lws_client_connect_info ccinfo;
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int status;
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switch (reason)
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{
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/* because we are protocols[0] ... */
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case LWS_CALLBACK_CLIENT_CONNECTION_ERROR:
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weechat_printf(
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request->workspace->buffer,
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_("%s%s: (%d) error connecting to slack: %s"),
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weechat_prefix("error"), SLACK_PLUGIN_NAME, request->idx,
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in ? (char *)in : "(null)");
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weechat_printf(
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request->workspace->buffer,
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_("%s%s: (%d) reconnecting..."),
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weechat_prefix("error"), SLACK_PLUGIN_NAME, request->idx);
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memset(&ccinfo, 0, sizeof(ccinfo)); /* otherwise uninitialized garbage */
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ccinfo.context = request->context;
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ccinfo.ssl_connection = LCCSCF_USE_SSL;
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ccinfo.port = 443;
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ccinfo.address = "slack.com";
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ccinfo.path = request->uri;
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ccinfo.host = ccinfo.address;
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ccinfo.origin = ccinfo.address;
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ccinfo.method = "GET";
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ccinfo.protocol = protocols[0].name;
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ccinfo.pwsi = &request->client_wsi;
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ccinfo.userdata = request;
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lws_client_connect_via_info(&ccinfo);
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break;
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case LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP:
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status = lws_http_client_http_response(wsi);
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weechat_printf(
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request->workspace->buffer,
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_("%s%s: (%d) posting message... (%d)"),
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weechat_prefix("network"), SLACK_PLUGIN_NAME, request->idx,
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status);
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break;
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/* chunks of chunked content, with header removed */
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case LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ:
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{
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struct t_json_chunk *new_chunk, *last_chunk;
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new_chunk = malloc(sizeof(*new_chunk));
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new_chunk->data = malloc((1024 * sizeof(char)) + 1);
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new_chunk->data[0] = '\0';
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new_chunk->next = NULL;
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strncat(new_chunk->data, in, (int)len);
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if (request->json_chunks)
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{
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for (last_chunk = request->json_chunks; last_chunk->next;
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last_chunk = last_chunk->next);
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last_chunk->next = new_chunk;
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}
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else
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{
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request->json_chunks = new_chunk;
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}
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}
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return 0; /* don't passthru */
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/* uninterpreted http content */
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case LWS_CALLBACK_RECEIVE_CLIENT_HTTP:
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{
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char buffer[1024 + LWS_PRE];
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char *px = buffer + LWS_PRE;
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int lenx = sizeof(buffer) - LWS_PRE;
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if (lws_http_client_read(wsi, &px, &lenx) < 0)
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return -1;
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}
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return 0; /* don't passthru */
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case LWS_CALLBACK_COMPLETED_CLIENT_HTTP:
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{
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int chunk_count, i;
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char *json_string;
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json_object *response, *ok, *error;
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struct t_json_chunk *chunk_ptr;
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chunk_count = 0;
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if (request->json_chunks)
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{
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chunk_count++;
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for (chunk_ptr = request->json_chunks; chunk_ptr->next;
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chunk_ptr = chunk_ptr->next)
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{
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chunk_count++;
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}
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}
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json_string = malloc((1024 * sizeof(char) * chunk_count) + 1);
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json_string[0] = '\0';
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chunk_ptr = request->json_chunks;
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for (i = 0; i < chunk_count; i++)
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{
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strncat(json_string, chunk_ptr->data, 1024);
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chunk_ptr = chunk_ptr->next;
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free(request->json_chunks->data);
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free(request->json_chunks);
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request->json_chunks = chunk_ptr;
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}
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weechat_printf(
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request->workspace->buffer,
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_("%s%s: (%d) got response: %s"),
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weechat_prefix("network"), SLACK_PLUGIN_NAME, request->idx,
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json_string);
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response = json_tokener_parse(json_string);
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ok = json_object_object_get(response, "ok");
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if (!json_valid(ok, request->workspace))
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{
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json_object_put(response);
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free(json_string);
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return 0;
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}
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if(json_object_get_boolean(ok))
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{
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/* wait for websocket to catch up */
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}
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else
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{
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error = json_object_object_get(response, "error");
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if (!json_valid(error, request->workspace))
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{
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json_object_put(response);
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free(json_string);
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return 0;
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}
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weechat_printf(
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request->workspace->buffer,
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_("%s%s: (%d) failed to post message: %s"),
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weechat_prefix("error"), SLACK_PLUGIN_NAME, request->idx,
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json_object_get_string(error));
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}
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json_object_put(response);
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free(json_string);
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}
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/* fallthrough */
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case LWS_CALLBACK_CLOSED_CLIENT_HTTP:
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request->client_wsi = NULL;
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/* Does not doing this cause a leak?
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lws_cancel_service(lws_get_context(wsi));*/ /* abort poll wait */
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break;
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default:
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break;
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}
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return lws_callback_http_dummy(wsi, reason, user, in, len);
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}
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static const struct lws_protocols protocols[] = {
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{
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"http",
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callback_http,
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0,
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0,
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},
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{ NULL, NULL, 0, 0 }
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};
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struct t_slack_request *slack_request_chat_postmessage(
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struct t_slack_workspace *workspace,
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const char *token, const char *channel,
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const char *text)
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{
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struct t_slack_request *request;
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struct lws_context_creation_info ctxinfo;
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struct lws_client_connect_info ccinfo;
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request = slack_request_alloc(workspace);
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size_t urilen = snprintf(NULL, 0, endpoint, token, channel, text) + 1;
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request->uri = malloc(urilen);
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snprintf(request->uri, urilen, endpoint, token, channel, text);
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memset(&ctxinfo, 0, sizeof(ctxinfo)); /* otherwise uninitialized garbage */
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ctxinfo.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
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ctxinfo.port = CONTEXT_PORT_NO_LISTEN; /* we do not run any server */
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ctxinfo.protocols = protocols;
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request->context = lws_create_context(&ctxinfo);
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if (!request->context)
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{
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weechat_printf(
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workspace->buffer,
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_("%s%s: (%d) error connecting to slack: lws init failed"),
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weechat_prefix("error"), SLACK_PLUGIN_NAME, request->idx);
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return NULL;
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}
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else
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{
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weechat_printf(
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workspace->buffer,
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_("%s%s: (%d) contacting slack.com:443"),
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weechat_prefix("network"), SLACK_PLUGIN_NAME, request->idx);
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}
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memset(&ccinfo, 0, sizeof(ccinfo)); /* otherwise uninitialized garbage */
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ccinfo.context = request->context;
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ccinfo.ssl_connection = LCCSCF_USE_SSL;
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ccinfo.port = 443;
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ccinfo.address = "slack.com";
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ccinfo.path = request->uri;
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ccinfo.host = ccinfo.address;
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ccinfo.origin = ccinfo.address;
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ccinfo.method = "GET";
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ccinfo.protocol = protocols[0].name;
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ccinfo.pwsi = &request->client_wsi;
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ccinfo.userdata = request;
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lws_client_connect_via_info(&ccinfo);
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return request;
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}
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