summaryrefslogtreecommitdiff
path: root/src/libpiano/xml.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libpiano/xml.c')
-rw-r--r--src/libpiano/xml.c826
1 files changed, 826 insertions, 0 deletions
diff --git a/src/libpiano/xml.c b/src/libpiano/xml.c
new file mode 100644
index 0000000..01294d8
--- /dev/null
+++ b/src/libpiano/xml.c
@@ -0,0 +1,826 @@
+/*
+Copyright (c) 2008-2010
+ Lars-Dominik Braun <PromyLOPh@lavabit.com>
+
+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.
+*/
+
+#define _BSD_SOURCE /* required by strdup() */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ezxml.h>
+
+#include "piano.h"
+#include "crypt.h"
+#include "config.h"
+#include "piano_private.h"
+
+static void PianoXmlStructParser (const ezxml_t,
+ void (*callback) (const char *, const ezxml_t, void *), void *);
+static char *PianoXmlGetNodeText (const ezxml_t);
+
+/* parse fault and get fault type
+ * @param xml <name> content
+ * @param xml <value> node
+ * @param return error string
+ * @return nothing
+ */
+static void PianoXmlIsFaultCb (const char *key, const ezxml_t value,
+ void *data) {
+ PianoReturn_t *ret = data;
+ char *valueStr = PianoXmlGetNodeText (value);
+ char *matchStart, *matchEnd;
+
+ if (strcmp ("faultString", key) == 0) {
+ *ret = PIANO_RET_ERR;
+ /* find fault identifier in a string like this:
+ * com.savagebeast.radio.api.protocol.xmlrpc.RadioXmlRpcException:
+ * 192.168.160.78|1213101717317|AUTH_INVALID_TOKEN|
+ * Invalid auth token */
+ if ((matchStart = strchr (valueStr, '|')) != NULL) {
+ if ((matchStart = strchr (matchStart+1, '|')) != NULL) {
+ if ((matchEnd = strchr (matchStart+1, '|')) != NULL) {
+ /* changes text in xml node, but we don't care... */
+ *matchEnd = '\0';
+ ++matchStart;
+ /* translate to our error message system */
+ if (strcmp ("AUTH_INVALID_TOKEN", matchStart) == 0) {
+ *ret = PIANO_RET_AUTH_TOKEN_INVALID;
+ } else if (strcmp ("AUTH_INVALID_USERNAME_PASSWORD",
+ matchStart) == 0) {
+ *ret = PIANO_RET_AUTH_USER_PASSWORD_INVALID;
+ } else if (strcmp ("LISTENER_NOT_AUTHORIZED",
+ matchStart) == 0) {
+ *ret = PIANO_RET_NOT_AUTHORIZED;
+ } else if (strcmp ("INCOMPATIBLE_VERSION",
+ matchStart) == 0) {
+ *ret = PIANO_RET_PROTOCOL_INCOMPATIBLE;
+ } else if (strcmp ("READONLY_MODE", matchStart) == 0) {
+ *ret = PIANO_RET_READONLY_MODE;
+ } else if (strcmp ("STATION_CODE_INVALID",
+ matchStart) == 0) {
+ *ret = PIANO_RET_STATION_CODE_INVALID;
+ } else if (strcmp ("STATION_DOES_NOT_EXIST",
+ matchStart) == 0) {
+ *ret = PIANO_RET_STATION_NONEXISTENT;
+ } else if (strcmp ("OUT_OF_SYNC", matchStart) == 0) {
+ *ret = PIANO_RET_OUT_OF_SYNC;
+ } else if (strcmp ("PLAYLIST_END", matchStart) == 0) {
+ *ret = PIANO_RET_PLAYLIST_END;
+ } else if (strcmp ("QUICKMIX_NOT_PLAYABLE", matchStart) == 0) {
+ *ret = PIANO_RET_QUICKMIX_NOT_PLAYABLE;
+ } else {
+ *ret = PIANO_RET_ERR;
+ printf (PACKAGE ": Unknown error %s in %s\n",
+ matchStart, valueStr);
+ }
+ }
+ }
+ }
+ } else if (strcmp ("faultCode", key) == 0) {
+ /* some errors can only be identified by looking at their id */
+ /* detect pandora's ip restriction */
+ if (strcmp ("12", valueStr) == 0) {
+ *ret = PIANO_RET_IP_REJECTED;
+ }
+ }
+}
+
+/* check whether pandora returned an error or not
+ * @param document root of xml doc
+ * @return _RET_OK or fault code (_RET_*)
+ */
+static PianoReturn_t PianoXmlIsFault (ezxml_t xmlDoc) {
+ PianoReturn_t ret;
+
+ if ((xmlDoc = ezxml_child (xmlDoc, "fault")) != NULL) {
+ xmlDoc = ezxml_get (xmlDoc, "value", 0, "struct", -1);
+ PianoXmlStructParser (xmlDoc, PianoXmlIsFaultCb, &ret);
+ return ret;
+ }
+ return PIANO_RET_OK;
+}
+
+/* parses things like this:
+ * <struct>
+ * <member>
+ * <name />
+ * <value />
+ * </member>
+ * <!-- ... -->
+ * </struct>
+ * @param xml node named "struct" (or containing a similar structure)
+ * @param who wants to use this data? callback: content of <name> as
+ * string, content of <value> as xmlNode (may contain other nodes
+ * or text), additional data used by callback(); don't forget
+ * to *copy* data taken from <name> or <value> as they will be
+ * freed soon
+ * @param extra data for callback
+ */
+static void PianoXmlStructParser (const ezxml_t structRoot,
+ void (*callback) (const char *, const ezxml_t, void *), void *data) {
+ ezxml_t curNode, keyNode, valueNode;
+ char *key;
+
+ /* get all <member> nodes */
+ for (curNode = ezxml_child (structRoot, "member"); curNode; curNode = curNode->next) {
+ /* reset variables */
+ key = NULL;
+ valueNode = keyNode = NULL;
+
+ keyNode = ezxml_child (curNode, "name");
+ if (keyNode != NULL) {
+ key = ezxml_txt (keyNode);
+ }
+
+ valueNode = ezxml_child (curNode, "value");
+ /* this will ignore empty <value /> nodes, but well... */
+ if (*key != '\0' && valueNode != NULL) {
+ (*callback) ((char *) key, valueNode, data);
+ }
+ }
+}
+
+/* create xml parser from string
+ * @param xml document
+ * @param returns document pointer (needed to free memory later)
+ * @param returns document root
+ * @return _OK or error
+ */
+static PianoReturn_t PianoXmlInitDoc (char *xmlStr, ezxml_t *xmlDoc) {
+ PianoReturn_t ret;
+
+ if ((*xmlDoc = ezxml_parse_str (xmlStr, strlen (xmlStr))) == NULL) {
+ return PIANO_RET_XML_INVALID;
+ }
+
+ if ((ret = PianoXmlIsFault (*xmlDoc)) != PIANO_RET_OK) {
+ ezxml_free (*xmlDoc);
+ return ret;
+ }
+
+ return PIANO_RET_OK;
+}
+
+/* get text from <value> nodes; some of them have <boolean>, <string>
+ * or <int> subnodes, just ignore them
+ * @param xml node <value>
+ */
+static char *PianoXmlGetNodeText (const ezxml_t node) {
+ char *retTxt = NULL;
+
+ retTxt = ezxml_txt (node);
+ /* no text => empty string */
+ if (*retTxt == '\0') {
+ retTxt = ezxml_txt (node->child);
+ }
+ return retTxt;
+}
+
+/* structParser callback; writes userinfo to PianoUserInfo structure
+ * @param value identifier
+ * @param value node
+ * @param pointer to userinfo structure
+ * @return nothing
+ */
+static void PianoXmlParseUserinfoCb (const char *key, const ezxml_t value,
+ void *data) {
+ PianoUserInfo_t *user = data;
+ char *valueStr = PianoXmlGetNodeText (value);
+
+ if (strcmp ("webAuthToken", key) == 0) {
+ user->webAuthToken = strdup (valueStr);
+ } else if (strcmp ("authToken", key) == 0) {
+ user->authToken = strdup (valueStr);
+ } else if (strcmp ("listenerId", key) == 0) {
+ user->listenerId = strdup (valueStr);
+ }
+}
+
+static void PianoXmlParseStationsCb (const char *key, const ezxml_t value,
+ void *data) {
+ PianoStation_t *station = data;
+ char *valueStr = PianoXmlGetNodeText (value);
+
+ if (strcmp ("stationName", key) == 0) {
+ station->name = strdup (valueStr);
+ } else if (strcmp ("stationId", key) == 0) {
+ station->id = strdup (valueStr);
+ } else if (strcmp ("isQuickMix", key) == 0) {
+ station->isQuickMix = (strcmp (valueStr, "1") == 0);
+ } else if (strcmp ("isCreator", key) == 0) {
+ station->isCreator = (strcmp (valueStr, "1") == 0);
+ }
+}
+
+static void PianoXmlParsePlaylistCb (const char *key, const ezxml_t value,
+ void *data) {
+ PianoSong_t *song = data;
+ char *valueStr = PianoXmlGetNodeText (value);
+
+ if (strcmp ("audioURL", key) == 0) {
+ /* last 48 chars of audioUrl are encrypted, but they put the key
+ * into the door's lock... */
+ const char urlTailN = 48;
+ const size_t valueStrN = strlen (valueStr);
+ char *urlTail = NULL,
+ *urlTailCrypted = &valueStr[valueStrN - urlTailN];
+
+ /* don't try to decrypt if string is too short (=> invalid memory
+ * reads/writes) */
+ if (valueStrN > urlTailN &&
+ (urlTail = PianoDecryptString (urlTailCrypted)) != NULL) {
+ if ((song->audioUrl = calloc (valueStrN + 1,
+ sizeof (*song->audioUrl))) != NULL) {
+ memcpy (song->audioUrl, valueStr, valueStrN - urlTailN);
+ /* FIXME: the key seems to be broken... so ignore 8 x 0x08
+ * postfix; urlTailN/2 because the encrypted hex string is now
+ * decoded */
+ memcpy (&song->audioUrl[valueStrN - urlTailN], urlTail,
+ urlTailN/2 - 8);
+ }
+ free (urlTail);
+ }
+ } else if (strcmp ("artRadio", key) == 0) {
+ song->coverArt = strdup (valueStr);
+ } else if (strcmp ("artistSummary", key) == 0) {
+ song->artist = strdup (valueStr);
+ } else if (strcmp ("musicId", key) == 0) {
+ song->musicId = strdup (valueStr);
+ } else if (strcmp ("userSeed", key) == 0) {
+ song->userSeed = strdup (valueStr);
+ } else if (strcmp ("songTitle", key) == 0) {
+ song->title = strdup (valueStr);
+ } else if (strcmp ("rating", key) == 0) {
+ if (strcmp (valueStr, "1") == 0) {
+ song->rating = PIANO_RATE_LOVE;
+ } else {
+ song->rating = PIANO_RATE_NONE;
+ }
+ } else if (strcmp ("stationId", key) == 0) {
+ song->stationId = strdup (valueStr);
+ } else if (strcmp ("albumTitle", key) == 0) {
+ song->album = strdup (valueStr);
+ } else if (strcmp ("fileGain", key) == 0) {
+ song->fileGain = atof (valueStr);
+ } else if (strcmp ("audioEncoding", key) == 0) {
+ if (strcmp (valueStr, "aacplus") == 0) {
+ song->audioFormat = PIANO_AF_AACPLUS;
+ } else if (strcmp (valueStr, "mp3") == 0) {
+ song->audioFormat = PIANO_AF_MP3;
+ } else if (strcmp (valueStr, "mp3-hifi") == 0) {
+ song->audioFormat = PIANO_AF_MP3_HI;
+ }
+ } else if (strcmp ("artistMusicId", key) == 0) {
+ song->artistMusicId = strdup (valueStr);
+ } else if (strcmp ("testStrategy", key) == 0) {
+ song->testStrategy = atoi (valueStr);
+ } else if (strcmp ("songType", key) == 0) {
+ song->songType = atoi (valueStr);
+ }
+}
+
+/* parses userinfos sent by pandora as login response
+ * @param piano handle
+ * @param utf-8 string
+ * @return _RET_OK or error
+ */
+PianoReturn_t PianoXmlParseUserinfo (PianoHandle_t *ph, char *xml) {
+ ezxml_t xmlDoc, structNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ /* <methodResponse> <params> <param> <value> <struct> */
+ structNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", 0, "struct", -1);
+ PianoXmlStructParser (structNode, PianoXmlParseUserinfoCb, &ph->user);
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+static void PianoXmlParseQuickMixStationsCb (const char *key, const ezxml_t value,
+ void *data) {
+ char ***retIds = data;
+ char **ids = NULL;
+ size_t idsN = 0;
+ ezxml_t curNode;
+
+ if (strcmp ("quickMixStationIds", key) == 0) {
+ for (curNode = ezxml_child (ezxml_get (value, "array", 0, "data", -1), "value");
+ curNode; curNode = curNode->next) {
+ idsN++;
+ if (ids == NULL) {
+ if ((ids = calloc (idsN, sizeof (*ids))) == NULL) {
+ *retIds = NULL;
+ return;
+ }
+ } else {
+ /* FIXME: memory leak (on failure) */
+ if ((ids = realloc (ids, idsN * sizeof (*ids))) == NULL) {
+ *retIds = NULL;
+ return;
+ }
+ }
+ ids[idsN-1] = strdup (PianoXmlGetNodeText (curNode));
+ }
+ /* append NULL: list ends here */
+ idsN++;
+ /* FIXME: copy&waste */
+ if (ids == NULL) {
+ if ((ids = calloc (idsN, sizeof (*ids))) == NULL) {
+ *retIds = NULL;
+ return;
+ }
+ } else {
+ if ((ids = realloc (ids, idsN * sizeof (*ids))) == NULL) {
+ *retIds = NULL;
+ return;
+ }
+ }
+ ids[idsN-1] = NULL;
+ }
+ *retIds = ids;
+}
+
+/* parse stations returned by pandora
+ * @param piano handle
+ * @param xml returned by pandora
+ * @return _RET_OK or error
+ */
+PianoReturn_t PianoXmlParseStations (PianoHandle_t *ph, char *xml) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+ char **quickMixIds = NULL, **curQuickMixId = NULL;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", 0, "array",
+ 0, "data", -1);
+
+ for (dataNode = ezxml_child (dataNode, "value"); dataNode;
+ dataNode = dataNode->next) {
+ PianoStation_t *tmpStation;
+
+ if ((tmpStation = calloc (1, sizeof (*tmpStation))) == NULL) {
+ ezxml_free (xmlDoc);
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ PianoXmlStructParser (ezxml_child (dataNode, "struct"),
+ PianoXmlParseStationsCb, tmpStation);
+
+ /* get stations selected for quickmix */
+ if (tmpStation->isQuickMix) {
+ PianoXmlStructParser (ezxml_child (dataNode, "struct"),
+ PianoXmlParseQuickMixStationsCb, &quickMixIds);
+ }
+ /* 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;
+ }
+ }
+ /* set quickmix flags after all stations are read */
+ if (quickMixIds != NULL) {
+ curQuickMixId = quickMixIds;
+ while (*curQuickMixId != NULL) {
+ PianoStation_t *curStation = PianoFindStationById (ph->stations,
+ *curQuickMixId);
+ if (curStation != NULL) {
+ curStation->useQuickMix = 1;
+ }
+ free (*curQuickMixId);
+ curQuickMixId++;
+ }
+ free (quickMixIds);
+ }
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* parse "create station" answer (it returns a new station structure)
+ * @param piano handle
+ * @param xml document
+ * @return nothing yet
+ */
+PianoReturn_t PianoXmlParseCreateStation (PianoHandle_t *ph, char *xml) {
+ ezxml_t xmlDoc, dataNode;
+ PianoStation_t *tmpStation;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", 0, "struct", -1);
+
+ if ((tmpStation = calloc (1, sizeof (*tmpStation))) == NULL) {
+ ezxml_free (xmlDoc);
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+ PianoXmlStructParser (dataNode, PianoXmlParseStationsCb, tmpStation);
+ /* FIXME: copy & waste */
+ /* 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;
+ }
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* parse "add seed" answer, nearly the same as ParseCreateStation
+ * @param piano handle
+ * @param xml document
+ * @param update this station
+ */
+PianoReturn_t PianoXmlParseAddSeed (PianoHandle_t *ph, char *xml,
+ PianoStation_t *station) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", 0, "struct", -1);
+ PianoDestroyStation (station);
+ PianoXmlStructParser (dataNode, PianoXmlParseStationsCb, station);
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* parses playlist; used when searching too
+ * @param piano handle
+ * @param xml document
+ * @param return: playlist
+ */
+PianoReturn_t PianoXmlParsePlaylist (PianoHandle_t *ph, char *xml,
+ PianoSong_t **retPlaylist) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", 0, "array",
+ 0, "data", -1);
+
+ for (dataNode = ezxml_child (dataNode, "value"); dataNode;
+ dataNode = dataNode->next) {
+ PianoSong_t *tmpSong;
+
+ if ((tmpSong = calloc (1, sizeof (*tmpSong))) == NULL) {
+ ezxml_free (xmlDoc);
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ PianoXmlStructParser (ezxml_child (dataNode, "struct"),
+ PianoXmlParsePlaylistCb, tmpSong);
+ /* begin linked list or append */
+ if (*retPlaylist == NULL) {
+ *retPlaylist = tmpSong;
+ } else {
+ PianoSong_t *curSong = *retPlaylist;
+ while (curSong->next != NULL) {
+ curSong = curSong->next;
+ }
+ curSong->next = tmpSong;
+ }
+ }
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* parse simple answers like this: <?xml version="1.0" encoding="UTF-8"?>
+ * <methodResponse><params><param><value>1</value></param></params>
+ * </methodResponse>
+ * @param xml string
+ * @return
+ */
+PianoReturn_t PianoXmlParseSimple (char *xml) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", -1);
+
+ if (strcmp (ezxml_txt (dataNode), "1") == 0) {
+ ret = PIANO_RET_OK;
+ } else {
+ ret = PIANO_RET_ERR;
+ }
+
+ ezxml_free (xmlDoc);
+
+ return ret;
+}
+
+/* xml struct parser callback, used in PianoXmlParseSearchCb
+ */
+static void PianoXmlParseSearchArtistCb (const char *key, const ezxml_t value,
+ void *data) {
+ PianoArtist_t *artist = data;
+ char *valueStr = PianoXmlGetNodeText (value);
+
+ if (strcmp ("artistName", key) == 0) {
+ artist->name = strdup (valueStr);
+ } else if (strcmp ("musicId", key) == 0) {
+ artist->musicId = strdup (valueStr);
+ }
+}
+
+/* callback for xml struct parser used in PianoXmlParseSearch, "switch" for
+ * PianoXmlParseSearchArtistCb and PianoXmlParsePlaylistCb
+ */
+static void PianoXmlParseSearchCb (const char *key, const ezxml_t value,
+ void *data) {
+ PianoSearchResult_t *searchResult = data;
+ ezxml_t curNode;
+
+ if (strcmp ("artists", key) == 0) {
+ /* skip <value><array><data> */
+ for (curNode = ezxml_child (ezxml_get (value, "array", 0, "data", -1), "value");
+ curNode; curNode = curNode->next) {
+ PianoArtist_t *artist;
+
+ if ((artist = calloc (1, sizeof (*artist))) == NULL) {
+ /* fail silently */
+ break;
+ }
+
+ memset (artist, 0, sizeof (*artist));
+
+ PianoXmlStructParser (ezxml_child (curNode, "struct"),
+ PianoXmlParseSearchArtistCb, artist);
+
+ /* 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;
+ }
+ }
+ } else if (strcmp ("songs", key) == 0) {
+ for (curNode = ezxml_child (ezxml_get (value, "array", 0, "data", -1), "value");
+ curNode; curNode = curNode->next) {
+ /* FIXME: copy & waste */
+ PianoSong_t *tmpSong;
+
+ if ((tmpSong = calloc (1, sizeof (*tmpSong))) == NULL) {
+ /* fail silently */
+ break;
+ }
+
+ PianoXmlStructParser (ezxml_child (curNode, "struct"),
+ PianoXmlParsePlaylistCb, tmpSong);
+ /* begin linked list or append */
+ if (searchResult->songs == NULL) {
+ searchResult->songs = tmpSong;
+ } else {
+ PianoSong_t *curSong = searchResult->songs;
+ while (curSong->next != NULL) {
+ curSong = curSong->next;
+ }
+ curSong->next = tmpSong;
+ }
+ }
+ }
+}
+
+/* parse search result; searchResult is nulled before use
+ * @param xml document
+ * @param returns search result
+ * @return nothing yet
+ */
+PianoReturn_t PianoXmlParseSearch (char *xml,
+ PianoSearchResult_t *searchResult) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", 0, "struct", -1);
+ /* we need a "clean" search result (with null pointers) */
+ memset (searchResult, 0, sizeof (*searchResult));
+ PianoXmlStructParser (dataNode, PianoXmlParseSearchCb, searchResult);
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* FIXME: copy&waste (PianoXmlParseSearch)
+ */
+PianoReturn_t PianoXmlParseSeedSuggestions (char *xml,
+ PianoSearchResult_t *searchResult) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", -1);
+ /* we need a "clean" search result (with null pointers) */
+ memset (searchResult, 0, sizeof (*searchResult));
+ /* reuse seach result parser; structure is nearly the same */
+ PianoXmlParseSearchCb ("artists", dataNode, searchResult);
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* encode reserved xml chars
+ * TODO: remove and use ezxml_ampencode
+ * @param encode this
+ * @return encoded string or NULL
+ */
+char *PianoXmlEncodeString (const char *s) {
+ char *replacements[] = {"&&amp;", "'&apos;", "\"&quot;", "<&lt;",
+ ">&gt;", NULL};
+ char **r, *sOut, *sOutCurr, found;
+
+ if ((sOut = calloc (strlen (s) * 5 + 1, sizeof (*sOut))) == NULL) {
+ return NULL;
+ }
+
+ sOutCurr = sOut;
+
+ while (*s != '\0') {
+ r = replacements;
+ found = 0;
+ while (*r != NULL) {
+ if (*s == *r[0]) {
+ found = 1;
+ strcat (sOutCurr, (*r) + 1);
+ sOutCurr += strlen ((*r) + 1);
+ break;
+ }
+ r++;
+ }
+ if (!found) {
+ *sOutCurr = *s;
+ sOutCurr++;
+ }
+ s++;
+ }
+ return sOut;
+}
+
+PianoReturn_t PianoXmlParseGenreExplorer (PianoHandle_t *ph, char *xml) {
+ ezxml_t xmlDoc, catNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ /* get all <member> nodes */
+ for (catNode = ezxml_child (xmlDoc, "category"); catNode;
+ catNode = catNode->next) {
+ PianoGenreCategory_t *tmpGenreCategory;
+ ezxml_t genreNode;
+
+ if ((tmpGenreCategory = calloc (1, sizeof (*tmpGenreCategory))) == NULL) {
+ ezxml_free (xmlDoc);
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ tmpGenreCategory->name = strdup (ezxml_attr (catNode, "categoryName"));
+
+ /* get genre subnodes */
+ for (genreNode = ezxml_child (catNode, "genre"); genreNode;
+ genreNode = genreNode->next) {
+ PianoGenre_t *tmpGenre;
+
+ if ((tmpGenre = calloc (1, sizeof (*tmpGenre))) == NULL) {
+ ezxml_free (xmlDoc);
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ /* get genre attributes */
+ tmpGenre->name = strdup (ezxml_attr (genreNode, "name"));
+ tmpGenre->musicId = strdup (ezxml_attr (genreNode, "musicId"));
+
+ /* 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;
+ }
+ }
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* dummy function, only checks for errors
+ * @param xml doc
+ * @return _OK or error
+ */
+PianoReturn_t PianoXmlParseTranformStation (char *xml) {
+ ezxml_t xmlDoc;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ ezxml_free (xmlDoc);
+
+ return PIANO_RET_OK;
+}
+
+/* parses "why did you play ...?" answer
+ * @param xml
+ * @param returns the answer
+ * @return _OK or error
+ */
+PianoReturn_t PianoXmlParseNarrative (char *xml, char **retNarrative) {
+ ezxml_t xmlDoc, dataNode;
+ PianoReturn_t ret;
+
+ if ((ret = PianoXmlInitDoc (xml, &xmlDoc)) != PIANO_RET_OK) {
+ return ret;
+ }
+
+ /* <methodResponse> <params> <param> <value> $textnode */
+ dataNode = ezxml_get (xmlDoc, "params", 0, "param", 0, "value", -1);
+ *retNarrative = strdup (ezxml_txt (dataNode));
+
+ ezxml_free (xmlDoc);
+
+ return ret;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 21:04:56 +0000