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-rw-r--r--libpiano/src/main.c465
1 files changed, 465 insertions, 0 deletions
diff --git a/libpiano/src/main.c b/libpiano/src/main.c
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+/*
+Copyright (c) 2008 Lars-Dominik Braun
+
+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.
+*/
+
+#include <curl/curl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "const.h"
+#include "main.h"
+#include "piano.h"
+#include "http.h"
+#include "xml.h"
+#include "crypt.h"
+
+/* initialize piano handle, set up curl handle and settings; note: you
+ * _must_ init curl and libxml2 using curl_global_init (CURL_GLOBAL_SSL)
+ * and xmlInitParser (), you also _must_ cleanup their garbage on your own!
+ * @param piano handle
+ * @return nothing
+ */
+void PianoInit (PianoHandle_t *ph) {
+ memset (ph, 0, sizeof (*ph));
+ ph->curlHandle = curl_easy_init ();
+ /* FIXME: 64-bit may make this hack useless */
+ snprintf (ph->routeId, sizeof (ph->routeId), "%07liP", time (NULL)>>8);
+ /* at the moment we don't need publicity */
+ curl_easy_setopt (ph->curlHandle, CURLOPT_USERAGENT, PIANO_USERAGENT);
+}
+
+/* free complete search result
+ * @public yes
+ * @param search result
+ */
+void PianoDestroySearchResult (PianoSearchResult_t *searchResult) {
+ PianoArtist_t *curArtist, *lastArtist;
+ PianoSong_t *curSong, *lastSong;
+
+ curArtist = searchResult->artists;
+ while (curArtist != NULL) {
+ free (curArtist->name);
+ free (curArtist->musicId);
+ lastArtist = curArtist;
+ curArtist = curArtist->next;
+ memset (lastArtist, 0, sizeof (*lastArtist));
+ free (lastArtist);
+ }
+
+ curSong = searchResult->songs;
+ while (curSong != NULL) {
+ free (curSong->title);
+ free (curSong->artist);
+ free (curSong->musicId);
+ lastSong = curSong;
+ curSong = curSong->next;
+ memset (lastSong, 0, sizeof (*lastSong));
+ free (lastSong);
+ }
+}
+
+/* free single station
+ * @public yes
+ * @param station
+ */
+void PianoDestroyStation (PianoStation_t *station) {
+ free (station->name);
+ free (station->id);
+ memset (station, 0, sizeof (station));
+}
+
+/* free complete station list
+ * @param piano handle
+ */
+void PianoDestroyStations (PianoHandle_t *ph) {
+ PianoStation_t *curStation, *lastStation;
+
+ curStation = ph->stations;
+ while (curStation != NULL) {
+ lastStation = curStation;
+ curStation = curStation->next;
+ PianoDestroyStation (lastStation);
+ free (lastStation);
+ }
+ ph->stations = NULL;
+}
+
+/* FIXME: copy & waste */
+/* free _all_ elements of playlist
+ * @param piano handle
+ * @return nothing
+ */
+void PianoDestroyPlaylist (PianoHandle_t *ph) {
+ PianoSong_t *curSong, *lastSong;
+
+ curSong = ph->playlist;
+ while (curSong != NULL) {
+ free (curSong->audioUrl);
+ free (curSong->artist);
+ free (curSong->focusTraitId);
+ free (curSong->matchingSeed);
+ free (curSong->musicId);
+ free (curSong->title);
+ free (curSong->userSeed);
+ lastSong = curSong;
+ curSong = curSong->next;
+ memset (lastSong, 0, sizeof (*lastSong));
+ free (lastSong);
+ }
+ ph->playlist = NULL;
+}
+
+/* frees the whole piano handle structure; this will _not_ cleanup curl's
+ * internal garbage, you have to call curl_global_cleanup () and
+ * xmlCleanupParser () for libxml2
+ * @param piano handle
+ * @return nothing
+ */
+void PianoDestroy (PianoHandle_t *ph) {
+ curl_easy_cleanup (ph->curlHandle);
+ /* FIXME: only free if pointer != NULL */
+ free (ph->user.webAuthToken);
+ free (ph->user.authToken);
+ free (ph->user.listenerId);
+
+ PianoDestroyStations (ph);
+ PianoDestroyPlaylist (ph);
+ memset (ph, 0, sizeof (*ph));
+}
+
+/* authenticates user
+ * @param piano handle
+ * @param username (utf-8 encoded)
+ * @param password (plaintext, utf-8 encoded)
+ * @return nothing
+ */
+PianoReturn_t PianoConnect (PianoHandle_t *ph, char *user, char *password) {
+ char url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr = PianoEncryptString ("<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>misc.sync</methodName>"
+ "<params></params></methodCall>");
+ char *retStr, requestStrPlain[10000];
+ PianoReturn_t ret;
+
+ /* sync (is the return value used by pandora? for now: ignore result) */
+ snprintf (url, sizeof (url), PIANO_RPC_URL "rid=%s&method=sync",
+ ph->routeId);
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ free (requestStr);
+ free (retStr);
+
+ /* authenticate */
+ snprintf (requestStrPlain, sizeof (requestStrPlain),
+ "<?xml version=\"1.0\"?><methodCall>"
+ "<methodName>listener.authenticateListener</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "</params></methodCall>", time (NULL), user, password);
+ requestStr = PianoEncryptString (requestStrPlain);
+ snprintf (url, sizeof (url), PIANO_SECURE_RPC_URL "rid=%s"
+ "&method=authenticateListener", ph->routeId);
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ ret = PianoXmlParseUserinfo (ph, retStr);
+
+ free (requestStr);
+ free (retStr);
+
+ return ret;
+}
+
+/* get all stations for authenticated user (so: PianoConnect needs to
+ * be run before)
+ * @param piano handle filled with some authentication data by PianoConnect
+ * @return nothing
+ */
+PianoReturn_t PianoGetStations (PianoHandle_t *ph) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr;
+ PianoReturn_t ret;
+
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>station.getStations</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken);
+ requestStr = PianoEncryptString (xmlSendBuf);
+ snprintf (url, sizeof (url), PIANO_RPC_URL
+ "rid=%s&lid=%s&method=getStations", ph->routeId,
+ ph->user.listenerId);
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ ret = PianoXmlParseStations (ph, retStr);
+ free (retStr);
+ free (requestStr);
+
+ return ret;
+}
+
+/* get next songs for station (usually four tracks)
+ * @param piano handle
+ * @param station id
+ * @return nothing yet
+ */
+void PianoGetPlaylist (PianoHandle_t *ph, char *stationId) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr;
+
+ /* FIXME: remove static numbers */
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>playlist.getFragment</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>15941546</string></value></param>"
+ "<param><value><string>181840822</string></value></param>"
+ "<param><value><string></string></value></param>"
+ "<param><value><string></string></value></param>"
+ "<param><value><string>aacplus</string></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken,
+ stationId);
+ requestStr = PianoEncryptString (xmlSendBuf);
+ snprintf (url, sizeof (url), PIANO_RPC_URL
+ "rid=%s&lid=%s&method=getFragment&arg1=%s&arg2=15941546"
+ "&arg3=181840822&arg4=&arg5=&arg6=aacplus", ph->routeId,
+ ph->user.listenerId, stationId);
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ PianoXmlParsePlaylist (ph, retStr);
+ free (retStr);
+ free (requestStr);
+}
+
+/* love or ban track (you cannot remove your rating, so PIANO_RATE_NONE is
+ * not allowed)
+ * @public yes
+ * @param piano handle
+ * @param track will be added to this stations loved tracks list
+ * @param rate this track
+ * @param your rating
+ * @return value from return enum
+ */
+PianoReturn_t PianoRateTrack (PianoHandle_t *ph, PianoStation_t *station,
+ PianoSong_t *song, PianoSongRating_t rating) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr;
+ PianoReturn_t ret = PIANO_RET_ERR;
+
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>station.addFeedback</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><boolean>%i</boolean></value></param>"
+ "<param><value><boolean>0</boolean></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken,
+ station->id, song->musicId, song->matchingSeed, song->userSeed,
+ /* sometimes focusTraitId is not set, dunno why yet */
+ (song->focusTraitId == NULL) ? "" : song->focusTraitId,
+ (rating == PIANO_RATE_LOVE) ? 1 : 0);
+ requestStr = PianoEncryptString (xmlSendBuf);
+ snprintf (url, sizeof (url), PIANO_RPC_URL
+ "rid=%s&lid=%s&method=addFeedback&arg1=%s&arg2=%s"
+ "&arg3=%s&arg4=%s&arg5=%s&arg6=%s&arg7=false", ph->routeId,
+ ph->user.listenerId, station->id, song->musicId,
+ song->matchingSeed, song->userSeed,
+ (song->focusTraitId == NULL) ? "" : song->focusTraitId,
+ (rating == PIANO_RATE_LOVE) ? "true" : "false");
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ ret = PianoXmlParseSimple (retStr);
+
+ if (ret == PIANO_RET_OK) {
+ song->rating = rating;
+ }
+
+ free (requestStr);
+ free (retStr);
+
+ return ret;
+}
+
+/* rename station (on the server and local)
+ * @public yes
+ * @param piano handle
+ * @param change this stations name
+ * @param new name
+ * @return
+ */
+PianoReturn_t PianoRenameStation (PianoHandle_t *ph, PianoStation_t *station,
+ char *newName) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr, *urlencodedNewName, *xmlencodedNewName;
+ PianoReturn_t ret = PIANO_RET_ERR;
+
+ xmlencodedNewName = PianoXmlEncodeString (newName);
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>station.setStationName</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken,
+ station->id, xmlencodedNewName);
+ requestStr = PianoEncryptString (xmlSendBuf);
+
+ urlencodedNewName = curl_easy_escape (ph->curlHandle, newName, 0);
+ snprintf (url, sizeof (url), PIANO_RPC_URL "rid=%s&lid=%s"
+ "&method=setStationName&arg1=%s&arg2=%s", ph->routeId,
+ ph->user.listenerId, station->id, urlencodedNewName);
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ ret = PianoXmlParseSimple (retStr);
+
+ if (ret == PIANO_RET_OK) {
+ free (station->name);
+ station->name = strdup (newName);
+ }
+
+ curl_free (urlencodedNewName);
+ free (xmlencodedNewName);
+ free (requestStr);
+ free (retStr);
+
+ return ret;
+}
+
+/* delete station
+ * @public yes
+ * @param piano handle
+ * @param station you want to delete
+ * @return
+ */
+PianoReturn_t PianoDeleteStation (PianoHandle_t *ph, PianoStation_t *station) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr;
+ PianoReturn_t ret = PIANO_RET_ERR;
+
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>station.removeStation</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken,
+ station->id);
+ requestStr = PianoEncryptString (xmlSendBuf);
+
+ snprintf (url, sizeof (url), PIANO_RPC_URL "rid=%s&lid=%s"
+ "&method=removeStation&arg1=%s", ph->routeId, ph->user.listenerId,
+ station->id);
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ ret = PianoXmlParseSimple (retStr);
+
+ if (ret == PIANO_RET_OK) {
+ /* delete station from local station list */
+ PianoStation_t *curStation = ph->stations, *lastStation = NULL;
+ while (curStation != NULL) {
+ if (curStation == station) {
+ printf ("deleting station\n");
+ if (lastStation != NULL) {
+ lastStation->next = curStation->next;
+ } else {
+ /* first station in list */
+ ph->stations = curStation->next;
+ }
+ PianoDestroyStation (curStation);
+ free (curStation);
+ }
+ lastStation = curStation;
+ curStation = curStation->next;
+ }
+ }
+
+ free (requestStr);
+ free (retStr);
+
+ return ret;
+}
+
+/* search for music (artist or track), needed to create new station; don't
+ * forget to free the search result; beware! searchResult will be nulled
+ * by PianoXmlParseSearch
+ * @public yes
+ * @param piano handle
+ * @param utf-8 search string
+ * @param return search result
+ * @return nothing yet
+ */
+void PianoSearchMusic (PianoHandle_t *ph, char *searchStr,
+ PianoSearchResult_t *searchResult) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr, *xmlencodedSearchStr, *urlencodedSearchStr;
+
+ xmlencodedSearchStr = PianoXmlEncodeString (searchStr);
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>music.search</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken,
+ xmlencodedSearchStr);
+ requestStr = PianoEncryptString (xmlSendBuf);
+
+ urlencodedSearchStr = curl_easy_escape (ph->curlHandle, searchStr, 0);
+ snprintf (url, sizeof (url), PIANO_RPC_URL "rid=%s&lid=%s&"
+ "method=search&arg1=%s", ph->routeId, ph->user.listenerId,
+ urlencodedSearchStr);
+
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ PianoXmlParseSearch (retStr, searchResult);
+
+ curl_free (urlencodedSearchStr);
+ free (xmlencodedSearchStr);
+ free (retStr);
+ free (requestStr);
+}
+
+/* create new station on server
+ * @public yes
+ * @param piano handle
+ * @param music id from artist or track, you may obtain one by calling
+ * PianoSearchMusic
+ * @return nothing, yet
+ */
+void PianoCreateStation (PianoHandle_t *ph, char *musicId) {
+ char xmlSendBuf[10000], url[PIANO_URL_BUFFER_SIZE];
+ char *requestStr, *retStr;
+
+ snprintf (xmlSendBuf, sizeof (xmlSendBuf), "<?xml version=\"1.0\"?>"
+ "<methodCall><methodName>station.createStation</methodName>"
+ "<params><param><value><int>%li</int></value></param>"
+ "<param><value><string>%s</string></value></param>"
+ "<param><value><string>mi%s</string></value></param>"
+ "</params></methodCall>", time (NULL), ph->user.authToken,
+ musicId);
+ requestStr = PianoEncryptString (xmlSendBuf);
+
+ snprintf (url, sizeof (url), PIANO_RPC_URL "rid=%s&lid=%s"
+ "&method=createStation&arg1=mi%s", ph->routeId,
+ ph->user.listenerId, musicId);
+
+ PianoHttpPost (ph->curlHandle, url, requestStr, &retStr);
+ PianoXmlParseCreateStation (ph, retStr);
+
+ free (requestStr);
+ free (retStr);
+}
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