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-rw-r--r--src/libpiano/response.c653
1 files changed, 653 insertions, 0 deletions
diff --git a/src/libpiano/response.c b/src/libpiano/response.c
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+++ b/src/libpiano/response.c
@@ -0,0 +1,653 @@
+/*
+Copyright (c) 2008-2012
+ Lars-Dominik Braun <lars@6xq.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef __FreeBSD__
+#define _BSD_SOURCE /* required by strdup() */
+#define _DARWIN_C_SOURCE /* strdup() on OS X */
+#endif
+
+#include <json.h>
+#include <string.h>
+#include <assert.h>
+#include <time.h>
+#include <stdlib.h>
+
+#include "piano.h"
+#include "piano_private.h"
+#include "crypt.h"
+
+static char *PianoJsonStrdup (json_object *j, const char *key) {
+ return strdup (json_object_get_string (json_object_object_get (j, key)));
+}
+
+static void PianoJsonParseStation (json_object *j, PianoStation_t *s) {
+ s->name = PianoJsonStrdup (j, "stationName");
+ s->id = PianoJsonStrdup (j, "stationToken");
+ s->isCreator = !json_object_get_boolean (json_object_object_get (j,
+ "isShared"));
+ s->isQuickMix = json_object_get_boolean (json_object_object_get (j,
+ "isQuickMix"));
+}
+
+/* parse xml response and update data structures/return new data structure
+ * @param piano handle
+ * @param initialized request (expects responseData to be a NUL-terminated
+ * string)
+ */
+PianoReturn_t PianoResponse (PianoHandle_t *ph, PianoRequest_t *req) {
+ PianoReturn_t ret = PIANO_RET_OK;
+ json_object *j, *result, *status;
+
+ assert (ph != NULL);
+ assert (req != NULL);
+
+ j = json_tokener_parse (req->responseData);
+
+ status = json_object_object_get (j, "stat");
+ if (status == NULL) {
+ json_object_put (j);
+ return PIANO_RET_INVALID_RESPONSE;
+ }
+
+ /* error handling */
+ if (strcmp (json_object_get_string (status), "ok") != 0) {
+ json_object *code = json_object_object_get (j, "code");
+ if (code == NULL) {
+ ret = PIANO_RET_INVALID_RESPONSE;
+ } else {
+ ret = json_object_get_int (code)+PIANO_RET_OFFSET;
+ }
+
+ json_object_put (j);
+ return ret;
+ }
+
+ result = json_object_object_get (j, "result");
+
+ switch (req->type) {
+ case PIANO_REQUEST_LOGIN: {
+ /* authenticate user */
+ PianoRequestDataLogin_t *reqData = req->data;
+
+ assert (req->responseData != NULL);
+ assert (reqData != NULL);
+
+ switch (reqData->step) {
+ case 0: {
+ /* decrypt timestamp */
+ const char *cryptedTimestamp = json_object_get_string (
+ json_object_object_get (result, "syncTime"));
+ unsigned long timestamp = 0;
+ const time_t realTimestamp = time (NULL);
+ char *decryptedTimestamp = NULL;
+ size_t decryptedSize;
+
+ ret = PIANO_RET_ERR;
+ if ((decryptedTimestamp = PianoDecryptString (cryptedTimestamp,
+ &decryptedSize)) != NULL && decryptedSize > 4) {
+ /* skip four bytes garbage(?) at beginning */
+ timestamp = strtoul (decryptedTimestamp+4, NULL, 0);
+ ph->timeOffset = realTimestamp - timestamp;
+ ret = PIANO_RET_CONTINUE_REQUEST;
+ }
+ free (decryptedTimestamp);
+ /* get auth token */
+ ph->partnerAuthToken = PianoJsonStrdup (result,
+ "partnerAuthToken");
+ ph->partnerId = json_object_get_int (
+ json_object_object_get (result, "partnerId"));
+ ++reqData->step;
+ break;
+ }
+
+ case 1:
+ /* information exists when reauthenticating, destroy to
+ * avoid memleak */
+ if (ph->user.listenerId != NULL) {
+ PianoDestroyUserInfo (&ph->user);
+ }
+ ph->user.listenerId = PianoJsonStrdup (result, "userId");
+ ph->user.authToken = PianoJsonStrdup (result,
+ "userAuthToken");
+ break;
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_GET_STATIONS: {
+ /* get stations */
+ assert (req->responseData != NULL);
+
+ json_object *stations = json_object_object_get (result,
+ "stations"), *mix = NULL;
+
+ for (size_t i=0; i < json_object_array_length (stations); i++) {
+ PianoStation_t *tmpStation;
+ json_object *s = json_object_array_get_idx (stations, i);
+
+ if ((tmpStation = calloc (1, sizeof (*tmpStation))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ PianoJsonParseStation (s, tmpStation);
+
+ if (tmpStation->isQuickMix) {
+ /* fix flags on other stations later */
+ mix = json_object_object_get (s, "quickMixStationIds");
+ }
+
+ /* start new linked list or append */
+ if (ph->stations == NULL) {
+ ph->stations = tmpStation;
+ } else {
+ PianoStation_t *curStation = ph->stations;
+ while (curStation->next != NULL) {
+ curStation = curStation->next;
+ }
+ curStation->next = tmpStation;
+ }
+ }
+
+ /* fix quickmix flags */
+ if (mix != NULL) {
+ PianoStation_t *curStation = ph->stations;
+ while (curStation != NULL) {
+ for (size_t i = 0; i < json_object_array_length (mix); i++) {
+ json_object *id = json_object_array_get_idx (mix, i);
+ if (strcmp (json_object_get_string (id),
+ curStation->id) == 0) {
+ curStation->useQuickMix = true;
+ }
+ }
+ curStation = curStation->next;
+ }
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_GET_PLAYLIST: {
+ /* get playlist, usually four songs */
+ PianoRequestDataGetPlaylist_t *reqData = req->data;
+ PianoSong_t *playlist = NULL;
+
+ assert (req->responseData != NULL);
+ assert (reqData != NULL);
+
+ json_object *items = json_object_object_get (result, "items");
+ assert (items != NULL);
+
+ for (size_t i=0; i < json_object_array_length (items); i++) {
+ json_object *s = json_object_array_get_idx (items, i);
+ PianoSong_t *song;
+
+ if ((song = calloc (1, sizeof (*song))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ if (json_object_object_get (s, "artistName") == NULL) {
+ free (song);
+ continue;
+ }
+ song->audioUrl = strdup (json_object_get_string (json_object_object_get (json_object_object_get (json_object_object_get (s, "audioUrlMap"), "highQuality"), "audioUrl")));
+ song->artist = PianoJsonStrdup (s, "artistName");
+ song->album = PianoJsonStrdup (s, "albumName");
+ song->title = PianoJsonStrdup (s, "songName");
+ song->trackToken = PianoJsonStrdup (s, "trackToken");
+ song->stationId = PianoJsonStrdup (s, "stationId");
+ song->fileGain = json_object_get_double (
+ json_object_object_get (s, "trackGain"));
+ song->audioFormat = PIANO_AF_AACPLUS;
+ switch (json_object_get_int (json_object_object_get (s,
+ "songRating"))) {
+ case 1:
+ song->rating = PIANO_RATE_LOVE;
+ break;
+ }
+
+ /* begin linked list or append */
+ if (playlist == NULL) {
+ playlist = song;
+ } else {
+ PianoSong_t *curSong = playlist;
+ while (curSong->next != NULL) {
+ curSong = curSong->next;
+ }
+ curSong->next = song;
+ }
+ }
+
+ reqData->retPlaylist = playlist;
+ break;
+ }
+
+ case PIANO_REQUEST_RATE_SONG: {
+ /* love/ban song */
+ PianoRequestDataRateSong_t *reqData = req->data;
+ reqData->song->rating = reqData->rating;
+ break;
+ }
+
+ case PIANO_REQUEST_ADD_FEEDBACK:
+ /* never ever use this directly, low-level call */
+ assert (0);
+ break;
+
+ case PIANO_REQUEST_RENAME_STATION: {
+ /* rename station and update PianoStation_t structure */
+ PianoRequestDataRenameStation_t *reqData = req->data;
+
+ assert (reqData != NULL);
+ assert (reqData->station != NULL);
+ assert (reqData->newName != NULL);
+
+ free (reqData->station->name);
+ reqData->station->name = strdup (reqData->newName);
+ break;
+ }
+
+ case PIANO_REQUEST_MOVE_SONG: {
+ /* move song to different station */
+ PianoRequestDataMoveSong_t *reqData = req->data;
+
+ assert (req->responseData != NULL);
+ assert (reqData != NULL);
+ assert (reqData->step < 2);
+
+ if (reqData->step == 0) {
+ ret = PIANO_RET_CONTINUE_REQUEST;
+ ++reqData->step;
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_DELETE_STATION: {
+ /* delete station from server and station list */
+ PianoStation_t *station = req->data;
+
+ assert (station != NULL);
+
+ /* delete station from local station list */
+ PianoStation_t *curStation = ph->stations, *lastStation = NULL;
+ while (curStation != NULL) {
+ if (curStation == station) {
+ if (lastStation != NULL) {
+ lastStation->next = curStation->next;
+ } else {
+ /* first station in list */
+ ph->stations = curStation->next;
+ }
+ PianoDestroyStation (curStation);
+ free (curStation);
+ break;
+ }
+ lastStation = curStation;
+ curStation = curStation->next;
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_SEARCH: {
+ /* search artist/song */
+ PianoRequestDataSearch_t *reqData = req->data;
+ PianoSearchResult_t *searchResult;
+
+ assert (req->responseData != NULL);
+ assert (reqData != NULL);
+
+ searchResult = &reqData->searchResult;
+ memset (searchResult, 0, sizeof (*searchResult));
+
+ /* get artists */
+ json_object *artists = json_object_object_get (result, "artists");
+ if (artists != NULL) {
+ for (size_t i=0; i < json_object_array_length (artists); i++) {
+ json_object *a = json_object_array_get_idx (artists, i);
+ PianoArtist_t *artist;
+
+ if ((artist = calloc (1, sizeof (*artist))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ artist->name = PianoJsonStrdup (a, "artistName");
+ artist->musicId = PianoJsonStrdup (a, "musicToken");
+
+ /* add result to linked list */
+ if (searchResult->artists == NULL) {
+ searchResult->artists = artist;
+ } else {
+ PianoArtist_t *curArtist = searchResult->artists;
+ while (curArtist->next != NULL) {
+ curArtist = curArtist->next;
+ }
+ curArtist->next = artist;
+ }
+ }
+ }
+
+ /* get songs */
+ json_object *songs = json_object_object_get (result, "songs");
+ if (songs != NULL) {
+ for (size_t i=0; i < json_object_array_length (songs); i++) {
+ json_object *s = json_object_array_get_idx (songs, i);
+ PianoSong_t *song;
+
+ if ((song = calloc (1, sizeof (*song))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ song->title = PianoJsonStrdup (s, "songName");
+ song->artist = PianoJsonStrdup (s, "artistName");
+ song->musicId = PianoJsonStrdup (s, "musicToken");
+
+ /* add result to linked list */
+ if (searchResult->songs == NULL) {
+ searchResult->songs = song;
+ } else {
+ PianoSong_t *curSong = searchResult->songs;
+ while (curSong->next != NULL) {
+ curSong = curSong->next;
+ }
+ curSong->next = song;
+ }
+ }
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_CREATE_STATION: {
+ /* create station, insert new station into station list on success */
+ PianoStation_t *tmpStation;
+
+ if ((tmpStation = calloc (1, sizeof (*tmpStation))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ PianoJsonParseStation (result, tmpStation);
+
+ /* start new linked list or append */
+ if (ph->stations == NULL) {
+ ph->stations = tmpStation;
+ } else {
+ PianoStation_t *curStation = ph->stations;
+ while (curStation->next != NULL) {
+ curStation = curStation->next;
+ }
+ curStation->next = tmpStation;
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_ADD_SEED:
+ case PIANO_REQUEST_ADD_TIRED_SONG:
+ case PIANO_REQUEST_SET_QUICKMIX:
+ case PIANO_REQUEST_BOOKMARK_SONG:
+ case PIANO_REQUEST_BOOKMARK_ARTIST:
+ case PIANO_REQUEST_DELETE_FEEDBACK:
+ case PIANO_REQUEST_DELETE_SEED:
+ /* response unused */
+ break;
+
+ case PIANO_REQUEST_GET_GENRE_STATIONS: {
+ /* get genre stations */
+ json_object *categories = json_object_object_get (result, "categories");
+ if (categories != NULL) {
+ for (size_t i = 0; i < json_object_array_length (categories); i++) {
+ json_object *c = json_object_array_get_idx (categories, i);
+ PianoGenreCategory_t *tmpGenreCategory;
+
+ if ((tmpGenreCategory = calloc (1,
+ sizeof (*tmpGenreCategory))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ tmpGenreCategory->name = PianoJsonStrdup (c,
+ "categoryName");
+
+ /* get genre subnodes */
+ json_object *stations = json_object_object_get (c,
+ "stations");
+ if (stations != NULL) {
+ for (size_t k = 0;
+ k < json_object_array_length (stations); k++) {
+ json_object *s =
+ json_object_array_get_idx (stations, k);
+ PianoGenre_t *tmpGenre;
+
+ if ((tmpGenre = calloc (1,
+ sizeof (*tmpGenre))) == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ /* get genre attributes */
+ tmpGenre->name = PianoJsonStrdup (s,
+ "stationName");
+ tmpGenre->musicId = PianoJsonStrdup (s,
+ "stationToken");
+
+ /* append station */
+ if (tmpGenreCategory->genres == NULL) {
+ tmpGenreCategory->genres = tmpGenre;
+ } else {
+ PianoGenre_t *curGenre =
+ tmpGenreCategory->genres;
+ while (curGenre->next != NULL) {
+ curGenre = curGenre->next;
+ }
+ curGenre->next = tmpGenre;
+ }
+ }
+ }
+ /* append category */
+ if (ph->genreStations == NULL) {
+ ph->genreStations = tmpGenreCategory;
+ } else {
+ PianoGenreCategory_t *curCat = ph->genreStations;
+ while (curCat->next != NULL) {
+ curCat = curCat->next;
+ }
+ curCat->next = tmpGenreCategory;
+ }
+ }
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_TRANSFORM_STATION: {
+ /* transform shared station into private and update isCreator flag */
+ PianoStation_t *station = req->data;
+
+ assert (req->responseData != NULL);
+ assert (station != NULL);
+
+ station->isCreator = 1;
+ break;
+ }
+
+ case PIANO_REQUEST_EXPLAIN: {
+ /* explain why song was selected */
+ PianoRequestDataExplain_t *reqData = req->data;
+ const size_t strSize = 1024;
+ size_t pos = 0;
+
+ assert (reqData != NULL);
+
+ json_object *explanations = json_object_object_get (result,
+ "explanations");
+ if (explanations != NULL) {
+ reqData->retExplain = malloc (strSize *
+ sizeof (*reqData->retExplain));
+ strncpy (reqData->retExplain, "We're playing this track "
+ "because it features ", strSize);
+ pos = strlen (reqData->retExplain);
+ for (size_t i=0; i < json_object_array_length (explanations); i++) {
+ json_object *e = json_object_array_get_idx (explanations,
+ i);
+ const char *s = json_object_get_string (
+ json_object_object_get (e, "focusTraitName"));
+
+ strncpy (&reqData->retExplain[pos], s, strSize-pos-1);
+ pos += strlen (s);
+ if (i < json_object_array_length (explanations)-2) {
+ strncpy (&reqData->retExplain[pos], ", ", strSize-pos-1);
+ pos += 2;
+ } else if (i == json_object_array_length (explanations)-2) {
+ strncpy (&reqData->retExplain[pos], " and ", strSize-pos-1);
+ pos += 5;
+ } else {
+ strncpy (&reqData->retExplain[pos], ".", strSize-pos-1);
+ pos += 1;
+ }
+ }
+ }
+ break;
+ }
+
+ case PIANO_REQUEST_GET_SEED_SUGGESTIONS: {
+#if 0
+ /* find similar artists */
+ PianoRequestDataGetSeedSuggestions_t *reqData = req->data;
+
+ assert (req->responseData != NULL);
+ assert (reqData != NULL);
+
+ ret = PianoXmlParseSeedSuggestions (req->responseData,
+ &reqData->searchResult);
+#endif
+ break;
+ }
+
+ case PIANO_REQUEST_GET_STATION_INFO: {
+ /* get station information (seeds and feedback) */
+ PianoRequestDataGetStationInfo_t *reqData = req->data;
+ PianoStationInfo_t *info;
+
+ assert (reqData != NULL);
+
+ info = &reqData->info;
+ assert (info != NULL);
+
+ /* parse music seeds */
+ json_object *music = json_object_object_get (result, "music");
+ if (music != NULL) {
+ /* songs */
+ json_object *songs = json_object_object_get (music, "songs");
+ if (songs != NULL) {
+ for (size_t i = 0; i < json_object_array_length (songs); i++) {
+ json_object *s = json_object_array_get_idx (songs, i);
+ PianoSong_t *seedSong;
+
+ seedSong = calloc (1, sizeof (*seedSong));
+ if (seedSong == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ seedSong->title = PianoJsonStrdup (s, "songName");
+ seedSong->artist = PianoJsonStrdup (s, "artistName");
+ seedSong->seedId = PianoJsonStrdup (s, "seedId");
+
+ if (info->songSeeds == NULL) {
+ info->songSeeds = seedSong;
+ } else {
+ PianoSong_t *curSong = info->songSeeds;
+ while (curSong->next != NULL) {
+ curSong = curSong->next;
+ }
+ curSong->next = seedSong;
+ }
+ }
+ }
+
+ /* artists */
+ json_object *artists = json_object_object_get (music,
+ "artists");
+ if (artists != NULL) {
+ for (size_t i = 0; i < json_object_array_length (artists); i++) {
+ json_object *a = json_object_array_get_idx (artists, i);
+ PianoArtist_t *seedArtist;
+
+ seedArtist = calloc (1, sizeof (*seedArtist));
+ if (seedArtist == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ seedArtist->name = PianoJsonStrdup (a, "artistName");
+ seedArtist->seedId = PianoJsonStrdup (a, "seedId");
+
+ if (info->artistSeeds == NULL) {
+ info->artistSeeds = seedArtist;
+ } else {
+ PianoArtist_t *curArtist = info->artistSeeds;
+ while (curArtist->next != NULL) {
+ curArtist = curArtist->next;
+ }
+ curArtist->next = seedArtist;
+ }
+ }
+ }
+ }
+
+ /* parse feedback */
+ json_object *feedback = json_object_object_get (result,
+ "feedback");
+ if (feedback != NULL) {
+ json_object_object_foreach (feedback, key, val) {
+ for (size_t i = 0; i < json_object_array_length (val); i++) {
+ json_object *s = json_object_array_get_idx (val, i);
+ PianoSong_t *feedbackSong;
+
+ feedbackSong = calloc (1, sizeof (*feedbackSong));
+ if (feedbackSong == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ feedbackSong->title = PianoJsonStrdup (s, "songName");
+ feedbackSong->artist = PianoJsonStrdup (s,
+ "artistName");
+ feedbackSong->feedbackId = PianoJsonStrdup (s,
+ "feedbackId");
+ feedbackSong->rating = json_object_get_boolean (
+ json_object_object_get (s, "isPositive")) ?
+ PIANO_RATE_LOVE : PIANO_RATE_BAN;
+
+
+ if (info->feedback == NULL) {
+ info->feedback = feedbackSong;
+ } else {
+ PianoSong_t *curSong = info->feedback;
+ while (curSong->next != NULL) {
+ curSong = curSong->next;
+ }
+ curSong->next = feedbackSong;
+ }
+ }
+ }
+ }
+ break;
+ }
+ }
+
+ json_object_put (j);
+
+ return ret;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 22:46:59 +0000