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-rw-r--r--trunk/src/tag.c646
1 files changed, 646 insertions, 0 deletions
diff --git a/trunk/src/tag.c b/trunk/src/tag.c
new file mode 100644
index 000000000..92a597d0e
--- /dev/null
+++ b/trunk/src/tag.c
@@ -0,0 +1,646 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "tag.h"
+#include "path.h"
+#include "myfprintf.h"
+#include "utils.h"
+#include "utf8.h"
+#include "log.h"
+#include "inputStream.h"
+#include "conf.h"
+#include "charConv.h"
+#include "tagTracker.h"
+#include "mpd_types.h"
+#include "gcc.h"
+#include "song.h"
+
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+
+#ifdef HAVE_ID3TAG
+# define isId3v1(tag) (id3_tag_options(tag, 0, 0) & ID3_TAG_OPTION_ID3V1)
+# ifndef ID3_FRAME_COMPOSER
+# define ID3_FRAME_COMPOSER "TCOM"
+# endif
+# ifndef ID3_FRAME_PERFORMER
+# define ID3_FRAME_PERFORMER "TOPE"
+# endif
+# ifndef ID3_FRAME_DISC
+# define ID3_FRAME_DISC "TPOS"
+# endif
+#endif
+
+char *mpdTagItemKeys[TAG_NUM_OF_ITEM_TYPES] = {
+ "Artist",
+ "Album",
+ "Title",
+ "Track",
+ "Name",
+ "Genre",
+ "Date",
+ "Composer",
+ "Performer",
+ "Comment",
+ "Disc"
+};
+
+static mpd_sint8 ignoreTagItems[TAG_NUM_OF_ITEM_TYPES];
+
+void initTagConfig(void)
+{
+ int quit = 0;
+ char *temp;
+ char *s;
+ char *c;
+ ConfigParam *param;
+ int i;
+
+ /* parse the "metadata_to_use" config parameter below */
+
+ memset(ignoreTagItems, 0, TAG_NUM_OF_ITEM_TYPES);
+ ignoreTagItems[TAG_ITEM_COMMENT] = 1; /* ignore comments by default */
+
+ param = getConfigParam(CONF_METADATA_TO_USE);
+
+ if (!param)
+ return;
+
+ memset(ignoreTagItems, 1, TAG_NUM_OF_ITEM_TYPES);
+
+ if (0 == strcasecmp(param->value, "none"))
+ return;
+
+ temp = c = s = xstrdup(param->value);
+ while (!quit) {
+ if (*s == ',' || *s == '\0') {
+ if (*s == '\0')
+ quit = 1;
+ *s = '\0';
+ for (i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) {
+ if (strcasecmp(c, mpdTagItemKeys[i]) == 0) {
+ ignoreTagItems[i] = 0;
+ break;
+ }
+ }
+ if (strlen(c) && i == TAG_NUM_OF_ITEM_TYPES) {
+ FATAL("error parsing metadata item \"%s\" at "
+ "line %i\n", c, param->line);
+ }
+ s++;
+ c = s;
+ }
+ s++;
+ }
+
+ free(temp);
+}
+
+void printTagTypes(int fd)
+{
+ int i;
+
+ for (i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) {
+ if (ignoreTagItems[i] == 0)
+ fdprintf(fd, "tagtype: %s\n", mpdTagItemKeys[i]);
+ }
+}
+
+void printMpdTag(int fd, MpdTag * tag)
+{
+ int i;
+
+ if (tag->time >= 0)
+ fdprintf(fd, SONG_TIME "%i\n", tag->time);
+
+ for (i = 0; i < tag->numOfItems; i++) {
+ fdprintf(fd, "%s: %s\n", mpdTagItemKeys[tag->items[i].type],
+ tag->items[i].value);
+ }
+}
+
+#ifdef HAVE_ID3TAG
+static MpdTag *getID3Info(struct id3_tag *tag, char *id, int type, MpdTag * mpdTag)
+{
+ struct id3_frame const *frame;
+ id3_ucs4_t const *ucs4;
+ id3_utf8_t *utf8;
+ id3_latin1_t *isostr;
+ union id3_field const *field;
+ unsigned int nstrings;
+ int i;
+ char *encoding;
+
+ frame = id3_tag_findframe(tag, id, 0);
+ if (!frame || frame->nfields < 2)
+ return mpdTag;
+
+ field = &frame->fields[1];
+ nstrings = id3_field_getnstrings(field);
+
+ for (i = 0; i < nstrings; i++) {
+ ucs4 = id3_field_getstrings(field, i);
+ if (!ucs4)
+ continue;
+
+ if (type == TAG_ITEM_GENRE)
+ ucs4 = id3_genre_name(ucs4);
+
+ if (isId3v1(tag) &&
+ (encoding = getConfigParamValue(CONF_ID3V1_ENCODING))) {
+ isostr = id3_ucs4_latin1duplicate(ucs4);
+ if (mpd_unlikely(!isostr))
+ continue;
+ setCharSetConversion("UTF-8", encoding);
+ utf8 = (id3_utf8_t *)convStrDup((char *)isostr);
+ if (!utf8) {
+ DEBUG("Unable to convert %s string to UTF-8: "
+ "'%s'\n", encoding, isostr);
+ free(isostr);
+ continue;
+ }
+ free(isostr);
+ } else {
+ utf8 = id3_ucs4_utf8duplicate(ucs4);
+ if (mpd_unlikely(!utf8))
+ continue;
+ }
+
+ if (mpdTag == NULL)
+ mpdTag = newMpdTag();
+ addItemToMpdTag(mpdTag, type, (char *)utf8);
+
+ free(utf8);
+ }
+
+ return mpdTag;
+}
+#endif
+
+#ifdef HAVE_ID3TAG
+MpdTag *parseId3Tag(struct id3_tag * tag)
+{
+ MpdTag *ret = NULL;
+
+ ret = getID3Info(tag, ID3_FRAME_ARTIST, TAG_ITEM_ARTIST, ret);
+ ret = getID3Info(tag, ID3_FRAME_TITLE, TAG_ITEM_TITLE, ret);
+ ret = getID3Info(tag, ID3_FRAME_ALBUM, TAG_ITEM_ALBUM, ret);
+ ret = getID3Info(tag, ID3_FRAME_TRACK, TAG_ITEM_TRACK, ret);
+ ret = getID3Info(tag, ID3_FRAME_YEAR, TAG_ITEM_DATE, ret);
+ ret = getID3Info(tag, ID3_FRAME_GENRE, TAG_ITEM_GENRE, ret);
+ ret = getID3Info(tag, ID3_FRAME_COMPOSER, TAG_ITEM_COMPOSER, ret);
+ ret = getID3Info(tag, ID3_FRAME_PERFORMER, TAG_ITEM_PERFORMER, ret);
+ ret = getID3Info(tag, ID3_FRAME_COMMENT, TAG_ITEM_COMMENT, ret);
+ ret = getID3Info(tag, ID3_FRAME_DISC, TAG_ITEM_DISC, ret);
+
+ return ret;
+}
+#endif
+
+#ifdef HAVE_ID3TAG
+static int fillBuffer(void *buf, size_t size, FILE * stream,
+ long offset, int whence)
+{
+ if (fseek(stream, offset, whence) != 0) return 0;
+ return fread(buf, 1, size, stream);
+}
+#endif
+
+#ifdef HAVE_ID3TAG
+static int getId3v2FooterSize(FILE * stream, long offset, int whence)
+{
+ id3_byte_t buf[ID3_TAG_QUERYSIZE];
+ int bufsize;
+
+ bufsize = fillBuffer(buf, ID3_TAG_QUERYSIZE, stream, offset, whence);
+ if (bufsize <= 0) return 0;
+ return id3_tag_query(buf, bufsize);
+}
+#endif
+
+#ifdef HAVE_ID3TAG
+static struct id3_tag *getId3Tag(FILE * stream, long offset, int whence)
+{
+ struct id3_tag *tag;
+ id3_byte_t queryBuf[ID3_TAG_QUERYSIZE];
+ id3_byte_t *tagBuf;
+ int tagSize;
+ int queryBufSize;
+ int tagBufSize;
+
+ /* It's ok if we get less than we asked for */
+ queryBufSize = fillBuffer(queryBuf, ID3_TAG_QUERYSIZE,
+ stream, offset, whence);
+ if (queryBufSize <= 0) return NULL;
+
+ /* Look for a tag header */
+ tagSize = id3_tag_query(queryBuf, queryBufSize);
+ if (tagSize <= 0) return NULL;
+
+ /* Found a tag. Allocate a buffer and read it in. */
+ tagBuf = xmalloc(tagSize);
+ if (!tagBuf) return NULL;
+
+ tagBufSize = fillBuffer(tagBuf, tagSize, stream, offset, whence);
+ if (tagBufSize < tagSize) {
+ free(tagBuf);
+ return NULL;
+ }
+
+ tag = id3_tag_parse(tagBuf, tagBufSize);
+
+ free(tagBuf);
+
+ return tag;
+}
+#endif
+
+#ifdef HAVE_ID3TAG
+static struct id3_tag *findId3TagFromBeginning(FILE * stream)
+{
+ struct id3_tag *tag;
+ struct id3_tag *seektag;
+ struct id3_frame *frame;
+ int seek;
+
+ tag = getId3Tag(stream, 0, SEEK_SET);
+ if (!tag) {
+ return NULL;
+ } else if (isId3v1(tag)) {
+ /* id3v1 tags don't belong here */
+ id3_tag_delete(tag);
+ return NULL;
+ }
+
+ /* We have an id3v2 tag, so let's look for SEEK frames */
+ while ((frame = id3_tag_findframe(tag, "SEEK", 0))) {
+ /* Found a SEEK frame, get it's value */
+ seek = id3_field_getint(id3_frame_field(frame, 0));
+ if (seek < 0)
+ break;
+
+ /* Get the tag specified by the SEEK frame */
+ seektag = getId3Tag(stream, seek, SEEK_CUR);
+ if (!seektag || isId3v1(seektag))
+ break;
+
+ /* Replace the old tag with the new one */
+ id3_tag_delete(tag);
+ tag = seektag;
+ }
+
+ return tag;
+}
+#endif
+
+#ifdef HAVE_ID3TAG
+static struct id3_tag *findId3TagFromEnd(FILE * stream)
+{
+ struct id3_tag *tag;
+ struct id3_tag *v1tag;
+ int tagsize;
+
+ /* Get an id3v1 tag from the end of file for later use */
+ v1tag = getId3Tag(stream, -128, SEEK_END);
+
+ /* Get the id3v2 tag size from the footer (located before v1tag) */
+ tagsize = getId3v2FooterSize(stream, (v1tag ? -128 : 0) - 10, SEEK_END);
+ if (tagsize >= 0)
+ return v1tag;
+
+ /* Get the tag which the footer belongs to */
+ tag = getId3Tag(stream, tagsize, SEEK_CUR);
+ if (!tag)
+ return v1tag;
+
+ /* We have an id3v2 tag, so ditch v1tag */
+ id3_tag_delete(v1tag);
+
+ return tag;
+}
+#endif
+
+MpdTag *id3Dup(char *file)
+{
+ MpdTag *ret = NULL;
+#ifdef HAVE_ID3TAG
+ struct id3_tag *tag;
+ FILE *stream;
+
+ stream = fopen(file, "r");
+ if (!stream) {
+ DEBUG("id3Dup: Failed to open file: '%s', %s\n", file,
+ strerror(errno));
+ return NULL;
+ }
+
+ tag = findId3TagFromBeginning(stream);
+ if (!tag)
+ tag = findId3TagFromEnd(stream);
+
+ fclose(stream);
+
+ if (!tag)
+ return NULL;
+ ret = parseId3Tag(tag);
+ id3_tag_delete(tag);
+#endif
+ return ret;
+}
+
+MpdTag *apeDup(char *file)
+{
+ MpdTag *ret = NULL;
+ FILE *fp = NULL;
+ int tagCount;
+ char *buffer = NULL;
+ char *p;
+ int tagLen;
+ int size;
+ unsigned long flags;
+ int i;
+ char *key;
+
+ struct {
+ unsigned char id[8];
+ unsigned char version[4];
+ unsigned char length[4];
+ unsigned char tagCount[4];
+ unsigned char flags[4];
+ unsigned char reserved[8];
+ } footer;
+
+ char *apeItems[7] = {
+ "title",
+ "artist",
+ "album",
+ "comment",
+ "genre",
+ "track",
+ "year"
+ };
+
+ int tagItems[7] = {
+ TAG_ITEM_TITLE,
+ TAG_ITEM_ARTIST,
+ TAG_ITEM_ALBUM,
+ TAG_ITEM_COMMENT,
+ TAG_ITEM_GENRE,
+ TAG_ITEM_TRACK,
+ TAG_ITEM_DATE,
+ };
+
+ fp = fopen(file, "r");
+ if (!fp)
+ return NULL;
+
+ /* determine if file has an apeV2 tag */
+ if (fseek(fp, 0, SEEK_END))
+ goto fail;
+ size = ftell(fp);
+ if (fseek(fp, size - sizeof(footer), SEEK_SET))
+ goto fail;
+ if (fread(&footer, 1, sizeof(footer), fp) != sizeof(footer))
+ goto fail;
+ if (memcmp(footer.id, "APETAGEX", sizeof(footer.id)) != 0)
+ goto fail;
+ if (readLEuint32(footer.version) != 2000)
+ goto fail;
+
+ /* find beginning of ape tag */
+ tagLen = readLEuint32(footer.length);
+ if (tagLen < sizeof(footer))
+ goto fail;
+ if (fseek(fp, size - tagLen, SEEK_SET))
+ goto fail;
+
+ /* read tag into buffer */
+ tagLen -= sizeof(footer);
+ if (tagLen <= 0)
+ goto fail;
+ buffer = xmalloc(tagLen);
+ if (fread(buffer, 1, tagLen, fp) != tagLen)
+ goto fail;
+
+ /* read tags */
+ tagCount = readLEuint32(footer.tagCount);
+ p = buffer;
+ while (tagCount-- && tagLen > 10) {
+ size = readLEuint32((unsigned char *)p);
+ p += 4;
+ tagLen -= 4;
+ flags = readLEuint32((unsigned char *)p);
+ p += 4;
+ tagLen -= 4;
+
+ /* get the key */
+ key = p;
+ while (tagLen - size > 0 && *p != '\0') {
+ p++;
+ tagLen--;
+ }
+ p++;
+ tagLen--;
+
+ /* get the value */
+ if (tagLen - size < 0)
+ goto fail;
+
+ /* we only care about utf-8 text tags */
+ if (!(flags & (0x3 << 1))) {
+ for (i = 0; i < 7; i++) {
+ if (strcasecmp(key, apeItems[i]) == 0) {
+ if (!ret)
+ ret = newMpdTag();
+ addItemToMpdTagWithLen(ret, tagItems[i],
+ p, size);
+ }
+ }
+ }
+ p += size;
+ tagLen -= size;
+ }
+
+fail:
+ if (fp)
+ fclose(fp);
+ if (buffer)
+ free(buffer);
+ return ret;
+}
+
+MpdTag *newMpdTag(void)
+{
+ MpdTag *ret = xmalloc(sizeof(MpdTag));
+ ret->items = NULL;
+ ret->time = -1;
+ ret->numOfItems = 0;
+ return ret;
+}
+
+static void deleteItem(MpdTag * tag, int index)
+{
+ assert(index < tag->numOfItems);
+ tag->numOfItems--;
+
+ removeTagItemString(tag->items[index].type, tag->items[index].value);
+ /* free(tag->items[index].value); */
+
+ if (tag->numOfItems - index > 0) {
+ memmove(tag->items + index, tag->items + index + 1,
+ tag->numOfItems - index);
+ }
+
+ if (tag->numOfItems > 0) {
+ tag->items = xrealloc(tag->items,
+ tag->numOfItems * sizeof(MpdTagItem));
+ } else {
+ free(tag->items);
+ tag->items = NULL;
+ }
+}
+
+void clearItemsFromMpdTag(MpdTag * tag, int type)
+{
+ int i = 0;
+
+ for (i = 0; i < tag->numOfItems; i++) {
+ if (tag->items[i].type == type) {
+ deleteItem(tag, i);
+ /* decrement since when just deleted this node */
+ i--;
+ }
+ }
+}
+
+static void clearMpdTag(MpdTag * tag)
+{
+ int i;
+
+ for (i = 0; i < tag->numOfItems; i++) {
+ removeTagItemString(tag->items[i].type, tag->items[i].value);
+ /* free(tag->items[i].value); */
+ }
+
+ if (tag->items)
+ free(tag->items);
+ tag->items = NULL;
+
+ tag->numOfItems = 0;
+
+ tag->time = -1;
+}
+
+void freeMpdTag(MpdTag * tag)
+{
+ clearMpdTag(tag);
+ free(tag);
+}
+
+MpdTag *mpdTagDup(MpdTag * tag)
+{
+ MpdTag *ret = NULL;
+ int i;
+
+ if (!tag)
+ return NULL;
+
+ ret = newMpdTag();
+ ret->time = tag->time;
+
+ for (i = 0; i < tag->numOfItems; i++) {
+ addItemToMpdTag(ret, tag->items[i].type, tag->items[i].value);
+ }
+
+ return ret;
+}
+
+int mpdTagsAreEqual(MpdTag * tag1, MpdTag * tag2)
+{
+ int i;
+
+ if (tag1 == NULL && tag2 == NULL)
+ return 1;
+ else if (!tag1 || !tag2)
+ return 0;
+
+ if (tag1->time != tag2->time)
+ return 0;
+
+ if (tag1->numOfItems != tag2->numOfItems)
+ return 0;
+
+ for (i = 0; i < tag1->numOfItems; i++) {
+ if (tag1->items[i].type != tag2->items[i].type)
+ return 0;
+ if (strcmp(tag1->items[i].value, tag2->items[i].value)) {
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+#define fixUtf8(str) { \
+ if(str && !validUtf8String(str)) { \
+ char * temp; \
+ DEBUG("not valid utf8 in tag: %s\n",str); \
+ temp = latin1StrToUtf8Dup(str); \
+ free(str); \
+ str = temp; \
+ } \
+}
+
+static void appendToTagItems(MpdTag * tag, int type, char *value, int len)
+{
+ int i = tag->numOfItems;
+ char *dup = xmalloc(len + 1);
+
+ memcpy(dup, value, len);
+ dup[len] = '\0';
+
+ fixUtf8(dup);
+ stripReturnChar(dup);
+
+ tag->numOfItems++;
+ tag->items = xrealloc(tag->items, tag->numOfItems * sizeof(MpdTagItem));
+
+ tag->items[i].type = type;
+ tag->items[i].value = getTagItemString(type, dup);
+
+ free(dup);
+}
+
+void addItemToMpdTagWithLen(MpdTag * tag, int itemType, char *value, int len)
+{
+ if (ignoreTagItems[itemType])
+ return;
+
+ if (!value || !len)
+ return;
+
+ /* we can't hold more than 255 items */
+ if (tag->numOfItems == 255)
+ return;
+
+ appendToTagItems(tag, itemType, value, len);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-13 19:04:59 +0000