src/ttrss_ws.c

   1 /*
   2  * Copyright (C) 2010-2013 jeanfi@gmail.com
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301 USA
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include <pthread.h>
  25
  26 #include <json/json.h>
  27
  28 #include "http.h"
  29 #include "log.h"
  30 #include "ttrss_ws.h"
  31 #include "url.h"
  32
  33 static char *session_id;
  34 static char *session_url;
  35 static char *session_user;
  36 static char *session_pwd;
  37
  38 static pthread_mutex_t lock;
  39 static struct http_session *session;
  40
  41 void ws_request_add_att_str(json_object *rq, const char *k, const char *str)
  42 {
  43         json_object_object_add(rq, k, json_object_new_string(str));
  44 }
  45
  46 void ws_request_add_att_int(json_object *rq, const char *k, int v)
  47 {
  48         json_object_object_add(rq, k, json_object_new_int(v));
  49 }
  50
  51 void ws_request_add_att_bool(json_object *rq, const char *k, int v)
  52 {
  53         json_object_object_add(rq, k, json_object_new_boolean(v));
  54 }
  55
  56 struct json_object *ws_request_new(const char *op)
  57 {
  58         struct json_object *rq;
  59
  60         rq = json_object_new_object();
  61
  62         ws_request_add_att_str(rq, "op", op);
  63
  64         if (session_id)
  65                 ws_request_add_att_str(rq, "sid", session_id);
  66
  67         return rq;
  68 }
  69
  70 void ws_set_config(const char *url, const char *user, const char *pwd)
  71 {
  72         char *tmp;
  73
  74         if (session_url && !strcmp(session_url, url)
  75             && session_user && !strcmp(session_user, user)
  76             && session_pwd && !strcmp(session_pwd, pwd))
  77                 return ;
  78
  79         free(session_id);
  80         session_id = NULL;
  81
  82         free(session_user);
  83         session_user = strdup(user);
  84
  85         free(session_pwd);
  86         session_pwd = strdup(pwd);
  87
  88         tmp = url_normalize(url);
  89         free(session_url);
  90         session_url = malloc(strlen(tmp) + strlen("/api/") + 1);
  91         strcpy(session_url, tmp);
  92         strcat(session_url, "/api/");
  93         free(tmp);
  94 }
  95
  96 struct json_object *ws_reply_get_content(struct json_object *rp)
  97 {
  98         return json_object_object_get(rp, "content");
  99 }
 100
 101 static struct json_object *
 102 execute(struct http_session *sess, struct json_object *rq, char **err)
 103 {
 104         struct json_object *rp, *content, *jerror;
 105         const char *str;
 106
 107         rp = http_json_get(sess, session_url, rq);
 108
 109         content = NULL;
 110
 111         if (rp) {
 112                 content = ws_reply_get_content(rp);
 113
 114                 if (content) {
 115                         jerror = json_object_object_get(content, "error");
 116                         if (jerror) {
 117                                 if (err) {
 118                                         str = json_object_get_string(jerror);
 119                                         *err = strdup(str);
 120                                 }
 121                                 content = NULL;
 122                         } else {
 123                                 json_object_get(content);
 124                         }
 125                 }
 126
 127                 json_object_put(rp);
 128         }
 129
 130         return content;
 131 }
 132
 133 struct json_object *ws_execute(struct json_object *rq)
 134 {
 135         char *err;
 136         struct json_object *result;
 137
 138         log_debug("ws_execute()");
 139         pthread_mutex_lock(&lock);
 140         log_debug("ws_execute() lock");
 141
 142         err = NULL;
 143         result = execute(session, rq, &err);
 144
 145         if (err) {
 146                 log_debug("ws_execute(): error=%s\n", err);
 147
 148                 if (!strcmp(err, "NOT_LOGGED_IN")) {
 149                         ws_open_session();
 150                         result = execute(session, rq, NULL);
 151                 }
 152
 153                 free(err);
 154         }
 155
 156         log_debug("ws_execute() unlock");
 157         pthread_mutex_unlock(&lock);
 158
 159         log_debug("ws_execute()");
 160
 161         return result;
 162 }
 163
 164 int ws_get_api_version()
 165 {
 166         struct json_object *rp, *rq;
 167         int v;
 168
 169         rq = ws_request_new("getApiLevel");
 170
 171         rp = ws_execute(rq);
 172
 173         json_object_put(rq);
 174
 175         if (rp) {
 176                 v = json_object_get_int(json_object_object_get(rp, "level"));
 177
 178                 json_object_put(rp);
 179         } else {
 180                 v = 0;
 181         }
 182
 183         return v;
 184 }
 185
 186 char *ws_login()
 187 {
 188         struct json_object *rq, *rp, *j;
 189         char *str;
 190
 191         rq = ws_request_new("login");
 192         ws_request_add_att_str(rq, "user", session_user);
 193         ws_request_add_att_str(rq, "password", session_pwd);
 194
 195         rp = ws_execute(rq);
 196         json_object_put(rq);
 197
 198         str = NULL;
 199         if (rp) {
 200                 j = json_object_object_get(rp, "session_id");
 201
 202                 if (j)
 203                         str = strdup(json_object_get_string(j));
 204
 205                 json_object_put(rp);
 206         }
 207
 208         return str;
 209 }
 210
 211 int ws_open_session()
 212 {
 213         int version, result;
 214
 215         log_debug("ws_open_session()");
 216
 217         if (session_id)
 218                 free(session_id);
 219
 220         session_id = NULL;
 221         session_id = ws_login();
 222
 223         if (session_id) {
 224                 version = ws_get_api_version();
 225                 log_debug("API version= %d", version);
 226
 227                 if (version > 0) {
 228                         result = 1;
 229                 } else {
 230                         free(session_id);
 231                         session_id = NULL;
 232                         result = 0;
 233                 }
 234                 result = 1;
 235         } else {
 236                 result =  0;
 237         }
 238
 239         return result;
 240 }
 241
 242 char *ws_get_article_content(int id)
 243 {
 244         struct json_object *rp, *rq, *content, *item;
 245         char *str;
 246
 247         rq = ws_request_new("getArticle");
 248         ws_request_add_att_int(rq, "article_id", id);
 249
 250         rp = ws_execute(rq);
 251
 252         json_object_put(rq);
 253
 254         str = NULL;
 255
 256         if (rp) {
 257                 item = json_object_array_get_idx(rp, 0);
 258
 259                 if (item) {
 260                         content = json_object_object_get(item, "content");
 261                         str = strdup(json_object_get_string(content));
 262                 }
 263
 264                 json_object_put(rp);
 265         }
 266
 267         return str;
 268 }
 269
 270 int ws_update_headlines(struct feed *feed)
 271 {
 272         struct json_object *rp, *rq, *jheadline, *j;
 273         int i, n, hid;
 274         struct headline *h, **tmp;
 275         const char *title, *url;
 276
 277         rq = ws_request_new("getHeadlines");
 278         ws_request_add_att_int(rq, "feed_id", feed->id);
 279         ws_request_add_att_bool(rq, "show_excerpt", 1);
 280
 281         rp = ws_execute(rq);
 282
 283         json_object_put(rq);
 284
 285         if (rp) {
 286                 n = json_object_array_length(rp);
 287                 for (i = 0; i < n; i++) {
 288                         jheadline = json_object_array_get_idx(rp, i);
 289
 290                         j = json_object_object_get(jheadline, "id");
 291                         hid = json_object_get_int(j);
 292                         h = feed_get_headline(feed, hid);
 293
 294                         if (!h) {
 295                                 j = json_object_object_get(jheadline, "title");
 296                                 title = json_object_get_string(j);
 297
 298                                 j = json_object_object_get(jheadline, "link");
 299                                 url = json_object_get_string(j);
 300
 301                                 h = headline_new(hid, url, title);
 302
 303                                 j = json_object_object_get(jheadline,
 304                                                            "excerpt");
 305                                 h->excerpt = strdup(json_object_get_string(j));
 306
 307                                 j = json_object_object_get(jheadline,
 308                                                            "updated");
 309                                 h->date = json_object_get_int(j);
 310
 311                                 tmp = headlines_add(feed->headlines, h);
 312                                 if (feed->headlines)
 313                                         free(feed->headlines);
 314                                 feed->headlines = tmp;
 315                         }
 316
 317                         j = json_object_object_get(jheadline, "unread");
 318                         h->unread = json_object_get_boolean(j);
 319                 }
 320                 json_object_put(rp);
 321                 return 1;
 322         } else {
 323                 return 0;
 324         }
 325 }
 326
 327 struct feed **ws_update_feeds(struct feed **feeds)
 328 {
 329         struct json_object *rp, *rq, *jfeed, *j;
 330         int i, n, id;
 331         struct feed *feed, **tmp;
 332         const char *title, *url;
 333
 334         log_debug("ws_update_feeds()");
 335
 336         rq = ws_request_new("getFeeds");
 337
 338         rp = ws_execute(rq);
 339         json_object_put(rq);
 340
 341         if (rp) {
 342                 n = json_object_array_length(rp);
 343
 344                 for (i = 0; i < n; i++) {
 345                         jfeed = json_object_array_get_idx(rp, i);
 346
 347                         j = json_object_object_get(jfeed, "id");
 348                         id = json_object_get_int(j);
 349
 350                         feed = feeds_get_feed(feeds, id);
 351
 352                         if (!feed) {
 353                                 j = json_object_object_get(jfeed, "title");
 354                                 title = json_object_get_string(j);
 355
 356                                 j = json_object_object_get(jfeed, "feed_url");
 357                                 url = json_object_get_string(j);
 358
 359                                 feed = feed_new(id, url, title);
 360
 361                                 tmp = feeds_add(feeds, feed);
 362                                 free(feeds);
 363                                 feeds = tmp;
 364                         }
 365
 366                         j = json_object_object_get(jfeed, "unread");
 367                         feed->unread = json_object_get_int(j);
 368
 369                         ws_update_headlines(feed);
 370                 }
 371                 json_object_put(rp);
 372         } else {
 373                 feeds_free(feeds);
 374                 feeds = NULL;
 375         }
 376
 377         log_debug("ws_update_feeds() done");
 378
 379         return feeds;
 380 }
 381
 382 struct json_object *ws_request_new_set_article_unread(int id, int unread)
 383 {
 384         struct json_object *rq;
 385
 386         rq = ws_request_new("updateArticle");
 387         json_object_object_add(rq, "article_ids", json_object_new_int(id));
 388         json_object_object_add(rq, "field", json_object_new_int(2));
 389         json_object_object_add(rq, "mode", json_object_new_int(unread));
 390
 391         return rq;
 392 }
 393
 394 void ws_set_article_unread(int id, int unread)
 395 {
 396         struct json_object *rp, *rq;
 397
 398         log_debug("ws_set_article_unread(%d,%d)", id, unread);
 399
 400         rq = ws_request_new_set_article_unread(id, unread);
 401
 402         rp = ws_execute(rq);
 403
 404         json_object_put(rq);
 405
 406         if (rp)
 407                 json_object_put(rp);
 408
 409         log_debug("ws_set_article_unread(%d,%d) done", id, unread);
 410 }
 411
 412 void ws_init()
 413 {
 414         pthread_mutexattr_t attr;
 415         pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
 416         pthread_mutex_init(&lock, &attr);
 417
 418         session = http_session_new();
 419 }