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 <stdlib.h>
  21 #include <string.h>
  22 #include <stdio.h>
  23
  24 #include <json/json.h>
  25
  26 #include "http.h"
  27 #include "ttrss_ws.h"
  28 #include "url.h"
  29
  30 static char *session_id;
  31 static char *session_url;
  32 static char *session_user;
  33 static char *session_pwd;
  34
  35 void ws_request_add_att_str(json_object *rq, const char *k, const char *str)
  36 {
  37         json_object_object_add(rq, k, json_object_new_string(str));
  38 }
  39
  40 void ws_request_add_att_int(json_object *rq, const char *k, int v)
  41 {
  42         json_object_object_add(rq, k, json_object_new_int(v));
  43 }
  44
  45 struct json_object *ws_request_new(const char *op)
  46 {
  47         struct json_object *rq;
  48
  49         rq = json_object_new_object();
  50
  51         ws_request_add_att_str(rq, "op", op);
  52
  53         if (session_id)
  54                 ws_request_add_att_str(rq, "sid", session_id);
  55
  56         return rq;
  57 }
  58
  59 void ws_init(const char *url, const char *user, const char *pwd)
  60 {
  61         char *tmp;
  62
  63         if (session_url && !strcmp(session_url, url)
  64             && session_user && !strcmp(session_user, user)
  65             && session_pwd && !strcmp(session_pwd, pwd))
  66                 return ;
  67
  68         free(session_id);
  69         session_id = NULL;
  70
  71         free(session_user);
  72         session_user = strdup(user);
  73
  74         free(session_pwd);
  75         session_pwd = strdup(pwd);
  76
  77         tmp = url_normalize(url);
  78         free(session_url);
  79         session_url = malloc(strlen(tmp) + strlen("/api/") + 1);
  80         strcpy(session_url, tmp);
  81         strcat(session_url, "/api/");
  82         free(tmp);
  83 }
  84
  85 struct json_object *ws_reply_get_content(struct json_object *rp)
  86 {
  87         return json_object_object_get(rp, "content");
  88 }
  89
  90 struct json_object *ws_execute(struct json_object *rq)
  91 {
  92         struct json_object *rp, *content;
  93
  94         rp = http_json_get(session_url, rq);
  95
  96         if (rp) {
  97                 content = ws_reply_get_content(rp);
  98
  99                 if (content && !json_object_object_get(rp, "error")) {
 100                         json_object_get(content);
 101                         json_object_put(rp);
 102                         return content;
 103                 }
 104
 105                 json_object_put(rp);
 106         }
 107
 108         return NULL;
 109 }
 110
 111 int ws_get_api_version()
 112 {
 113         struct json_object *rp, *rq;
 114         int v;
 115
 116         rq = ws_request_new("getApiLevel");
 117
 118         rp = ws_execute(rq);
 119
 120         json_object_put(rq);
 121
 122         if (rp) {
 123                 v = json_object_get_int(json_object_object_get(rp, "level"));
 124
 125                 json_object_put(rp);
 126         } else {
 127                 v = 0;
 128         }
 129
 130         return v;
 131 }
 132
 133 char *ws_login()
 134 {
 135         struct json_object *rq, *rp, *j;
 136         char *str;
 137
 138         rq = ws_request_new("login");
 139         ws_request_add_att_str(rq, "user", session_user);
 140         ws_request_add_att_str(rq, "password", session_pwd);
 141
 142         rp = ws_execute(rq);
 143         json_object_put(rq);
 144
 145         if (rp) {
 146                 j = json_object_object_get(rp, "session_id");
 147                 str = strdup(json_object_get_string(j));
 148
 149                 json_object_put(rp);
 150         } else {
 151                 str = NULL;
 152         }
 153
 154         return str;
 155 }
 156
 157 int ws_open_session()
 158 {
 159         int version, result;
 160
 161         if (session_id)
 162                 free(session_id);
 163
 164         session_id = ws_login();
 165
 166         if (session_id) {
 167                 version = ws_get_api_version();
 168                 printf("API version: %d\n", version);
 169
 170                 if (version > 0) {
 171                         result = 1;
 172                 } else {
 173                         free(session_id);
 174                         session_id = NULL;
 175                         result = 0;
 176                 }
 177         } else {
 178                 result =  0;
 179         }
 180
 181         return result;
 182 }
 183
 184 char *ws_get_article_content(int id)
 185 {
 186         struct json_object *rp, *rq, *content, *item;
 187         char *str;
 188
 189         rq = ws_request_new("getArticle");
 190         ws_request_add_att_int(rq, "article_id", id);
 191
 192         rp = ws_execute(rq);
 193
 194         json_object_put(rq);
 195
 196         str = NULL;
 197
 198         if (rp) {
 199                 item = json_object_array_get_idx(rp, 0);
 200
 201                 if (item) {
 202                         content = json_object_object_get(item, "content");
 203                         str = strdup(json_object_get_string(content));
 204                 }
 205
 206                 json_object_put(rp);
 207         }
 208
 209         return str;
 210 }
 211
 212 int ws_update_headlines(struct feed *feed)
 213 {
 214         struct json_object *rp, *rq, *jheadline, *j;
 215         int i, n, err, hid;
 216         struct headline *h, **tmp;
 217         const char *title, *url;
 218
 219         rq = ws_request_new("getHeadlines");
 220         ws_request_add_att_int(rq, "feed_id", feed->id);
 221
 222         rp = ws_execute(rq);
 223
 224         json_object_put(rq);
 225
 226         if (rp) {
 227                 n = json_object_array_length(rp);
 228                 for (i = 0; i < n; i++) {
 229                         jheadline = json_object_array_get_idx(rp, i);
 230
 231                         j = json_object_object_get(jheadline, "id");
 232                         hid = json_object_get_int(j);
 233                         h = feed_get_headline(feed, hid);
 234
 235                         if (!h) {
 236                                 j = json_object_object_get(jheadline, "title");
 237                                 title = json_object_get_string(j);
 238
 239                                 j = json_object_object_get(jheadline, "link");
 240                                 url = json_object_get_string(j);
 241
 242                                 h = headline_new(hid, url, title);
 243
 244                                 tmp = headlines_add(feed->headlines, h);
 245                                 if (feed->headlines)
 246                                         free(feed->headlines);
 247                                 feed->headlines = tmp;
 248                         }
 249
 250                         j = json_object_object_get(jheadline, "unread");
 251                         h->unread = json_object_get_boolean(j);
 252                 }
 253                 err = 0;
 254         } else {
 255                 err = 1;
 256         }
 257
 258         json_object_put(rp);
 259         return !err;
 260 }
 261
 262 struct feed **ws_update_feeds(struct feed **feeds)
 263 {
 264         struct json_object *rp, *rq, *jfeed, *j;
 265         int i, n, id;
 266         struct feed *feed, **tmp;
 267         const char *title, *url;
 268
 269         printf("ttrss_get_feeds\n");
 270
 271         rq = ws_request_new("getFeeds");
 272
 273         rp = ws_execute(rq);
 274         json_object_put(rq);
 275
 276         if (rp) {
 277                 n = json_object_array_length(rp);
 278
 279                 for (i = 0; i < n; i++) {
 280                         jfeed = json_object_array_get_idx(rp, i);
 281
 282                         j = json_object_object_get(jfeed, "id");
 283                         id = json_object_get_int(j);
 284
 285                         feed = feeds_get_feed(feeds, id);
 286
 287                         if (!feed) {
 288                                 j = json_object_object_get(jfeed, "title");
 289                                 title = json_object_get_string(j);
 290
 291                                 j = json_object_object_get(jfeed, "feed_url");
 292                                 url = json_object_get_string(j);
 293
 294                                 feed = feed_new(id, url, title);
 295
 296                                 tmp = feeds_add(feeds, feed);
 297                                 free(feeds);
 298                                 feeds = tmp;
 299                         } else {
 300                                 printf("found!\n");
 301                         }
 302
 303                         j = json_object_object_get(jfeed, "unread");
 304                         feed->unread = json_object_get_int(j);
 305                 }
 306         } else {
 307                 feeds_free(feeds);
 308                 feeds = NULL;
 309         }
 310
 311         json_object_put(rp);
 312
 313         printf("ttrss_get_feeds ended\n");
 314
 315         return feeds;
 316 }