src/ttrss.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 <string.h>
  22
  23 #include <json/json.h>
  24
  25 #include "http.h"
  26 #include "ttrss.h"
  27 #include "url.h"
  28
  29 static char *session_id;
  30 static char *session_url;
  31 static char *session_user;
  32 static char *session_pwd;
  33
  34 static int list_length(void **list)
  35 {
  36         int n;
  37
  38         if (!list)
  39                 return 0;
  40
  41         n = 0;
  42         while(*list) {
  43                 n++;
  44                 list++;
  45         }
  46
  47         return n;
  48 }
  49
  50 static void **list_add(void **list, void *item)
  51 {
  52         int n;
  53         void **result;
  54
  55         n = list_length(list);
  56
  57         result = malloc((n + 1 + 1) * sizeof(void *));
  58
  59         if (list)
  60                 memcpy(result, list, n * sizeof(void *));
  61
  62         result[n] = item;
  63         result[n + 1] = NULL;
  64
  65         return result;
  66 }
  67
  68
  69 struct headline *feed_get_headline(struct feed *feed, int id)
  70 {
  71         struct headline **headlines;
  72
  73         headlines = feed->headlines;
  74         if (headlines)
  75                 while (*headlines) {
  76                         if ((*headlines)->id == id)
  77                                 return *headlines;
  78                         headlines++;
  79                 }
  80
  81         return NULL;
  82 }
  83
  84 void ws_request_add_att_str(json_object *rq, const char *k, const char *str)
  85 {
  86         json_object_object_add(rq, k, json_object_new_string(str));
  87 }
  88
  89 void ws_request_add_att_int(json_object *rq, const char *k, int v)
  90 {
  91         json_object_object_add(rq, k, json_object_new_int(v));
  92 }
  93
  94 struct json_object *ws_request_new(const char *op)
  95 {
  96         struct json_object *rq;
  97
  98         rq = json_object_new_object();
  99
 100         ws_request_add_att_str(rq, "op", op);
 101
 102         if (session_id)
 103                 ws_request_add_att_str(rq, "sid", session_id);
 104
 105         return rq;
 106 }
 107
 108 void ws_init(const char *url, const char *user, const char *pwd)
 109 {
 110         char *tmp;
 111
 112         if (session_id)
 113                 session_id = NULL;
 114
 115         if (session_user)
 116                 free(session_user);
 117         session_user = strdup(user);
 118
 119         if (session_pwd)
 120                 free(session_pwd);
 121         session_pwd = strdup(pwd);
 122
 123         if (session_url)
 124                 free(session_url);
 125
 126         tmp = url_normalize(url);
 127         session_url = malloc(strlen(tmp) + strlen("/api/") + 1);
 128         strcpy(session_url, tmp);
 129         strcat(session_url, "/api/");
 130         free(tmp);
 131 }
 132
 133 struct json_object *ws_reply_get_content(struct json_object *rp)
 134 {
 135         return json_object_object_get(rp, "content");
 136 }
 137
 138 struct json_object *ws_execute(struct json_object *rq)
 139 {
 140         struct json_object *rp, *content;
 141
 142         rp = http_json_get(session_url, rq);
 143
 144         if (rp) {
 145                 content = ws_reply_get_content(rp);
 146
 147                 if (content && !json_object_object_get(rp, "error")) {
 148                         json_object_get(content);
 149                         json_object_put(rp);
 150                         return content;
 151                 }
 152
 153                 json_object_put(rp);
 154         }
 155
 156         return NULL;
 157 }
 158
 159 int ws_get_api_version()
 160 {
 161         struct json_object *rp, *rq;
 162         int v;
 163
 164         rq = ws_request_new("getApiLevel");
 165
 166         rp = ws_execute(rq);
 167
 168         json_object_put(rq);
 169
 170         if (rp) {
 171                 v = json_object_get_int(json_object_object_get(rp, "level"));
 172
 173                 json_object_put(rp);
 174         } else {
 175                 v = 0;
 176         }
 177
 178         return v;
 179 }
 180
 181 char *ws_login()
 182 {
 183         struct json_object *rq, *rp, *j;
 184         char *str;
 185
 186         rq = ws_request_new("login");
 187         ws_request_add_att_str(rq, "user", session_user);
 188         ws_request_add_att_str(rq, "password", session_pwd);
 189
 190         rp = ws_execute(rq);
 191         json_object_put(rq);
 192
 193         if (rp) {
 194                 j = json_object_object_get(rp, "session_id");
 195                 str = strdup(json_object_get_string(j));
 196
 197                 json_object_put(rp);
 198         } else {
 199                 str = NULL;
 200         }
 201
 202         return str;
 203 }
 204
 205 int ws_open_session()
 206 {
 207         int version, result;
 208
 209         if (session_id)
 210                 free(session_id);
 211
 212         session_id = ws_login();
 213
 214         if (session_id) {
 215                 version = ws_get_api_version();
 216                 printf("API version: %d\n", version);
 217
 218                 if (version > 0) {
 219                         result = 1;
 220                 } else {
 221                         free(session_id);
 222                         session_id = NULL;
 223                         result = 0;
 224                 }
 225         } else {
 226                 result =  0;
 227         }
 228
 229         return result;
 230 }
 231
 232 char *ws_get_article_content(int id)
 233 {
 234         struct json_object *rp, *rq, *content, *item;
 235         char *str;
 236
 237         rq = ws_request_new("getArticle");
 238         ws_request_add_att_int(rq, "article_id", id);
 239
 240         rp = ws_execute(rq);
 241
 242         json_object_put(rq);
 243
 244         str = NULL;
 245
 246         if (rp) {
 247                 item = json_object_array_get_idx(rp, 0);
 248
 249                 if (item) {
 250                         content = json_object_object_get(item, "content");
 251
 252                         str = strdup(json_object_get_string(content));
 253                 }
 254
 255                 json_object_put(rp);
 256         }
 257
 258         return str;
 259 }
 260
 261 int ws_update_headlines(struct feed *feed)
 262 {
 263         struct json_object *rp, *rq, *jheadline, *j;
 264         int i, n, err, hid;
 265         struct headline *h, **tmp;
 266
 267         rq = ws_request_new("getHeadlines");
 268         ws_request_add_att_int(rq, "feed_id", feed->id);
 269
 270         rp = ws_execute(rq);
 271
 272         json_object_put(rq);
 273
 274         if (rp) {
 275                 n = json_object_array_length(rp);
 276                 for (i = 0; i < n; i++) {
 277                         jheadline = json_object_array_get_idx(rp, i);
 278
 279                         j = json_object_object_get(jheadline, "id");
 280                         hid = json_object_get_int(j);
 281                         h = feed_get_headline(feed, hid);
 282
 283                         if (!h) {
 284                                 h = malloc(sizeof(struct headline));
 285                                 h->id = hid;
 286                                 h->excerpt = NULL;
 287                                 h->content = NULL;
 288
 289                                 tmp = (struct headline **)list_add((void **)feed->headlines, h);
 290                                 if (feed->headlines)
 291                                         free(feed->headlines);
 292                                 feed->headlines = tmp;
 293                         }
 294
 295                         j = json_object_object_get(jheadline, "title");
 296                         h->title = strdup(json_object_get_string(j));
 297
 298                         j = json_object_object_get(jheadline, "link");
 299                         h->url = strdup(json_object_get_string(j));
 300
 301                         j = json_object_object_get(jheadline, "unread");
 302                         h->unread = json_object_get_boolean(j);
 303                 }
 304                 err = 0;
 305         } else {
 306                 err = 1;
 307         }
 308
 309         json_object_put(rp);
 310         return !err;
 311 }
 312
 313 const char *ttrss_get_headline_content(struct headline *h)
 314 {
 315         if (!h->content)
 316                 h->content = ws_get_article_content(h->id);
 317
 318         return h->content;
 319 }
 320
 321
 322 struct feed **ttrss_get_feeds()
 323 {
 324         struct json_object *rp, *rq, *content, *jfeed, *j;
 325         int i, n;
 326         struct feed **feeds, *feed, **tmp;
 327
 328         printf("ttrss_get_feeds\n");
 329
 330         rq = ws_request_new("getFeeds");
 331
 332         rp = http_json_get(session_url, rq);
 333         json_object_put(rq);
 334
 335         content = json_object_object_get(rp, "content");
 336
 337         if (content) {
 338                 n = json_object_array_length(content);
 339
 340                 feeds = NULL;
 341                 for (i = 0; i < n; i++) {
 342                         jfeed = json_object_array_get_idx(content, i);
 343
 344                         feed = malloc(sizeof(struct feed));
 345
 346                         j = json_object_object_get(jfeed, "title");
 347                         feed->title = strdup(json_object_get_string(j));
 348
 349                         j = json_object_object_get(jfeed, "feed_url");
 350                         feed->url = strdup(json_object_get_string(j));
 351
 352                         j = json_object_object_get(jfeed, "id");
 353                         feed->id = json_object_get_int(j);
 354
 355                         j = json_object_object_get(jfeed, "unread");
 356                         feed->unread = json_object_get_int(j);
 357
 358                         feed->headlines = NULL;
 359
 360                         tmp = (struct feed **)list_add((void **)feeds, feed);
 361                         free(feeds);
 362                         feeds = tmp;
 363                 }
 364         } else {
 365                 feeds = NULL;
 366         }
 367
 368         json_object_put(rp);
 369
 370         printf("ttrss_get_feeds ended\n");
 371
 372         return feeds;
 373 }
 374
 375 struct headline **ttrss_get_headlines(struct feed *f)
 376 {
 377         if (!f->headlines)
 378                 ws_update_headlines(f);
 379
 380         return f->headlines;
 381 }
 382
 383 void ttrss_set_article_unread(int id, int unread)
 384 {
 385         struct json_object *rp, *rq;
 386
 387         printf("ttrss_set_article_unread %d %d\n", id, unread);
 388
 389         rq = ws_request_new("updateArticle");
 390         json_object_object_add(rq, "article_ids", json_object_new_int(id));
 391         json_object_object_add(rq, "field", json_object_new_int(2));
 392         json_object_object_add(rq, "mode", json_object_new_int(unread));
 393
 394         rp = http_json_get(session_url, rq);
 395
 396         json_object_put(rq);
 397         json_object_put(rp);
 398 }