]> git.tuebingen.mpg.de Git - paraslash.git/blobdiff - aft.c
Replace struct table_info by struct afs_table.
[paraslash.git] / aft.c
diff --git a/aft.c b/aft.c
index c5effc66e68cce996dc99260b7f8da843a985532..c63ab47106866dd5caa9e99062377c742b999a68 100644 (file)
--- a/aft.c
+++ b/aft.c
@@ -8,16 +8,14 @@
 
 #include "para.h"
 #include "error.h"
+#include "string.h"
 #include <sys/mman.h>
 #include <fnmatch.h>
 #include "afh.h"
 #include "afs.h"
 #include "net.h"
-#include "string.h"
 #include "vss.h"
 
-#define AFS_AUDIO_FILE_DIR "/home/mp3" /* FIXME: Use cwd instead */
-
 static struct osl_table *audio_file_table;
 
 /** The different sorting methods of the ls command. */
@@ -243,60 +241,7 @@ static struct osl_table_description audio_file_table_desc = {
        .column_descriptions = aft_cols
 };
 
-static char *prefix_path(const char *prefix, int len, const char *path)
-{
-       int speclen;
-       char *n;
-
-       for (;;) {
-               char c;
-               if (*path != '.')
-                       break;
-               c = path[1];
-               /* "." */
-               if (!c) {
-                       path++;
-                       break;
-               }
-               /* "./" */
-               if (c == '/') {
-                       path += 2;
-                       continue;
-               }
-               if (c != '.')
-                       break;
-               c = path[2];
-               if (!c)
-                       path += 2;
-               else if (c == '/')
-                       path += 3;
-               else
-                       break;
-               /* ".." and "../" */
-               /* Remove last component of the prefix */
-               do {
-                       if (!len)
-                               return NULL;
-                       len--;
-               } while (len && prefix[len-1] != '/');
-               continue;
-       }
-       if (!len)
-               return para_strdup(path);
-       speclen = strlen(path);
-       n = para_malloc(speclen + len + 1);
-       memcpy(n, prefix, len);
-       memcpy(n + len, path, speclen+1);
-       return n;
-}
-
-/*
- * We fundamentally don't like some paths: we don't want
- * dot or dot-dot anywhere.
- *
- * Also, we don't want double slashes or slashes at the
- * end that can make pathnames ambiguous.
- */
+/* We don't want * dot or dot-dot anywhere. */
 static int verify_dotfile(const char *rest)
 {
        /*
@@ -304,57 +249,68 @@ static int verify_dotfile(const char *rest)
         * now test the rest.
         */
        switch (*rest) {
-       /* "." is not allowed */
-       case '\0': case '/':
-               return 1;
-
-       case '.':
+       case '\0': case '/': /* /foo/. and /foo/./bar are not ok */
+               return -1;
+       case '.': /* path start with /foo/.. */
                if (rest[1] == '\0' || rest[1] == '/')
-                       return -1;
+                       return -1; /* /foo/.. or /foo/../bar are not ok */
+               /* /foo/..bar is ok */
        }
        return 1;
 }
 
+/*
+ * We fundamentally don't like some paths: We don't want double slashes or
+ * slashes at the end that can make pathnames ambiguous.
+ */
 static int verify_path(const char *orig_path, char **resolved_path)
 {
        char c;
-       const char prefix[] = AFS_AUDIO_FILE_DIR "/";
-       const char *path = orig_path;
-       const size_t prefix_len = strlen(prefix);
+       size_t len;
+       char *path;
 
+       if (*orig_path != '/') /* we only accept absolute paths */
+               return -E_BAD_PATH;
+       len = strlen(orig_path);
+       *resolved_path = para_strdup(orig_path);
+       path = *resolved_path;
+       while (len > 1 && path[--len] == '/')
+               path[len] = '\0'; /* remove slash at the end */
        c = *path++;
-       if (!c)
-               goto bad_path;
        while (c) {
                if (c == '/') {
                        c = *path++;
                        switch (c) {
-                       default:
-                               continue;
                        case '/': /* double slash */
                                goto bad_path;
                        case '.':
                                if (verify_dotfile(path) < 0)
                                        goto bad_path;
+                       default:
+                               continue;
                        }
                }
                c = *path++;
        }
-       if (*orig_path != '/')
-               *resolved_path = prefix_path(prefix, prefix_len, orig_path);
-       else
-               *resolved_path = para_strdup(orig_path);
        return 1;
 bad_path:
+       free(*resolved_path);
        return -E_BAD_PATH;
 }
 
+/** The on-disk layout of a afhi struct. */
 enum afhi_offsets {
+       /** Where the number of seconds is stored. */
        AFHI_SECONDS_TOTAL_OFFSET = 0,
+       /** Position of the bitrate. */
        AFHI_BITRATE_OFFSET = 4,
+       /** Position of the frequency. */
        AFHI_FREQUENCY_OFFSET = 8,
+       /** Number of channels is stored here. */
        AFHI_CHANNELS_OFFSET = 12,
+       /** The tag info position. */
        AFHI_INFO_STRING_OFFSET = 13,
+       /** Minimal on-disk size of a valid afhi struct. */
        MIN_AFHI_SIZE = 14
 };
 
@@ -457,9 +413,9 @@ static int load_chunk_info(struct osl_object *obj, struct audio_format_info *afh
  *
  * \return The return value of the underlying call to osl_get_row().
  */
-int aft_get_row_of_path(char *path, struct osl_row **row)
+int aft_get_row_of_path(const char *path, struct osl_row **row)
 {
-       struct osl_object obj = {.data = path, .size = strlen(path) + 1};
+       struct osl_object obj = {.data = (char *)path, .size = strlen(path) + 1};
 
        return osl_get_row(audio_file_table, AFTCOL_PATH, &obj, row);
 }
@@ -500,7 +456,7 @@ int get_afsi_object_of_row(const struct osl_row *row, struct osl_object *obj)
  *
  * \return Positive on success, negative on errors.
  */
-int get_afsi_object_of_path(char *path, struct osl_object *obj)
+int get_afsi_object_of_path(const char *path, struct osl_object *obj)
 {
        struct osl_row *row;
        int ret = aft_get_row_of_path(path, &row);
@@ -526,6 +482,23 @@ int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi)
        return load_afsi(afsi, &obj);
 }
 
+/**
+ * Get the audio file selector info, given the path of an audio table.
+ *
+ * \param path The full path of the audio file.
+ * \param afsi Result pointer.
+ *
+ * \return Positive on success, negative on errors.
+ */
+int get_afsi_of_path(const char *path, struct afs_info *afsi)
+{
+       struct osl_object obj;
+       int ret = get_afsi_object_of_path(path, &obj);
+       if (ret < 0)
+               return ret;
+       return load_afsi(afsi, &obj);
+}
+
 /**
  * Get the path of an audio file, given a row of the audio file table.
  *
@@ -683,12 +656,17 @@ err:
 }
 
 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
-       time_t current_time)
+       time_t current_time, enum ls_listing_mode lm)
 {
        struct tm t;
 
        if (!localtime_r((time_t *)seconds, &t))
                return -E_LOCALTIME;
+       if (lm == LS_MODE_MBOX) {
+               if (!strftime(buf, size, "%c", &t))
+                       return -E_STRFTIME;
+               return 1;
+       }
        if (*seconds + 6 * 30 * 24 * 3600 > current_time) {
                if (!strftime(buf, size, "%b %e %k:%M", &t))
                        return -E_STRFTIME;
@@ -699,6 +677,7 @@ static int get_local_time(uint64_t *seconds, char *buf, size_t size,
        return 1;
 }
 
+/** Compute the number of (decimal) digits of a number. */
 #define GET_NUM_DIGITS(x, num) { \
        typeof((x)) _tmp = PARA_ABS(x); \
        *num = 1; \
@@ -775,6 +754,8 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
        struct audio_format_info *afhi = &d->afhi;
        struct ls_widths *w = &opts->widths;
        int have_score = opts->flags & LS_FLAG_ADMISSIBLE_ONLY;
+       char asc_hash[2 * HASH_SIZE + 1];
+       char *att_line, *lyrics_line, *image_line;
 
        if (opts->mode == LS_MODE_SHORT) {
                para_printf(b, "%s\n", d->path);
@@ -782,7 +763,7 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
        }
        get_attribute_bitmap(&afsi->attributes, att_buf);
        ret = get_local_time(&afsi->last_played, last_played_time,
-               sizeof(last_played_time), current_time);
+               sizeof(last_played_time), current_time, opts->mode);
        if (ret < 0)
                return ret;
        get_duration_buf(afhi->seconds_total, duration_buf, w->duration_width);
@@ -823,14 +804,12 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
                );
                return 1;
        }
+       hash_to_asc(d->hash, asc_hash);
+       att_line = make_attribute_line(att_buf, afsi);
+       lyrics_line = make_lyrics_line(afsi);
+       image_line = make_image_line(afsi);
        if (opts->mode == LS_MODE_VERBOSE) {
-               char asc_hash[2 * HASH_SIZE + 1];
-               char *att_line, *lyrics_line, *image_line;
 
-               hash_to_asc(d->hash, asc_hash);
-               att_line = make_attribute_line(att_buf, afsi);
-               lyrics_line = make_lyrics_line(afsi);
-               image_line = make_image_line(afsi);
                para_printf(b,
                        "%s: %s\n" /* path */
                        "%s%s%s" /* score */
@@ -863,11 +842,50 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
                        last_played_time,
                        afhi->info_string
                );
-               free(att_line);
-               free(lyrics_line);
-               free(image_line);
-               return 1;
+       } else { /* mbox mode */
+               struct osl_object lyrics_def;
+               lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
+               para_printf(b,
+                       "From foo@localhost %s\n"
+                       "Received: from\nTo: bar\nFrom: a\n"
+                       "Subject: %s\n\n" /* path */
+                       "%s%s%s" /* score */
+                       "attributes: %s\n"
+                       "hash: %s\n"
+                       "image_id: %s\n"
+                       "lyrics_id: %s\n"
+                       "bitrate: %dkbit/s\n"
+                       "format: %s\n"
+                       "frequency: %dHz\n"
+                       "channels: %d\n"
+                       "duration: %s\n"
+                       "num_played: %d\n"
+                       "tag info: %s\n"
+                       "%s%s\n",
+                       last_played_time,
+                       d->path,
+                       have_score? "score: " : "", score_buf,
+                               have_score? "\n" : "",
+                       att_line,
+                       asc_hash,
+                       image_line,
+                       lyrics_line,
+                       afhi->bitrate,
+                       audio_format_name(afsi->audio_format_id),
+                       afhi->frequency,
+                       afhi->channels,
+                       duration_buf,
+                       afsi->num_played,
+                       afhi->info_string,
+                       lyrics_def.data? "Lyrics:\n~~~~~~~\n" : "",
+                       lyrics_def.data? (char *)lyrics_def.data : ""
+               );
+               if (lyrics_def.data)
+                       osl_close_disk_object(lyrics_def.data);
        }
+       free(att_line);
+       free(lyrics_line);
+       free(image_line);
        return 1;
 }
 
@@ -1017,7 +1035,7 @@ static int prepare_ls_row(struct osl_row *row, void *ls_opts)
        }
        if (options->num_patterns) {
                for (i = 0; i < options->num_patterns; i++) {
-                       ret = fnmatch(options->patterns[i], path, FNM_PATHNAME);
+                       ret = fnmatch(options->patterns[i], path, 0);
                        if (!ret)
                                break;
                        if (ret == FNM_NOMATCH)
@@ -1353,15 +1371,20 @@ afhi <=> force or no HS
 
 */
 
-
-#define ADD_FLAG_LAZY 1
-#define ADD_FLAG_FORCE 2
-#define ADD_FLAG_VERBOSE 4
-
-/* TODO: change log messages so that they get written to the result buffer */
+/** Flags passed to the add command. */
+enum com_add_flags {
+       /** Skip paths that exist already. */
+       ADD_FLAG_LAZY = 1,
+       /** Force adding. */
+       ADD_FLAG_FORCE = 2,
+       /** Print what is being done. */
+       ADD_FLAG_VERBOSE = 4,
+       /** Try to add files with unknown suffixes. */
+       ADD_FLAG_ALL = 8,
+};
 
 static int com_add_callback(const struct osl_object *query,
-               __a_unused struct osl_object *result)
+               struct osl_object *result)
 {
        char *buf = query->data, *path;
        struct osl_row *pb, *aft_row;
@@ -1373,6 +1396,7 @@ static int com_add_callback(const struct osl_object *query,
        char afsi_buf[AFSI_SIZE];
        uint32_t flags = read_u32(buf + AFTROW_FLAGS_OFFSET);
        struct afs_info default_afsi = {.last_played = 0};
+       struct para_buffer msg = {.buf = NULL};
 
        hash = (HASH_TYPE *)buf + AFTROW_HASH_OFFSET;
        hash_to_asc(hash, asc);;
@@ -1390,29 +1414,30 @@ static int com_add_callback(const struct osl_object *query,
                return ret;
        if (hs && pb && hs == pb && !(flags & ADD_FLAG_FORCE)) {
                if (flags & ADD_FLAG_VERBOSE)
-                       PARA_NOTICE_LOG("ignoring duplicate %p\n", path);
-               return 1;
+                       para_printf(&msg, "ignoring duplicate\n");
+               ret = 1;
+               goto out;
        }
        if (hs && hs != pb) {
                struct osl_object obj;
                if (pb) { /* hs trumps pb, remove pb */
                        if (flags & ADD_FLAG_VERBOSE)
-                               PARA_NOTICE_LOG("removing path brother\n");
+                               para_printf(&msg, "removing path brother\n");
                        ret = osl_del_row(audio_file_table, pb);
                        if (ret < 0)
-                               return ret;
+                               goto out;
                        pb = NULL;
                }
                /* file rename, update hs' path */
                ret = osl_get_object(audio_file_table, hs, AFTCOL_PATH, &obj);
                if (flags & ADD_FLAG_VERBOSE)
-                       PARA_NOTICE_LOG("rename %s -> %s\n", (char *)obj.data, path);
+                       para_printf(&msg, "renamed from %s\n", (char *)obj.data);
                ret = osl_update_object(audio_file_table, hs, AFTCOL_PATH,
                        &objs[AFTCOL_PATH]);
                if (ret < 0)
-                       return ret;
+                       goto out;
                if (!(flags & ADD_FLAG_FORCE))
-                       return ret;
+                       goto out;
        }
        /* no hs or force mode, child must have sent afhi */
        uint16_t afhi_offset = read_u16(buf + AFTROW_AFHI_OFFSET_POS);
@@ -1420,8 +1445,9 @@ static int com_add_callback(const struct osl_object *query,
 
        objs[AFTCOL_AFHI].data = buf + afhi_offset;
        objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
+       ret = -E_NO_AFHI;
        if (!objs[AFTCOL_AFHI].size) /* "impossible" */
-               return -E_NO_AFHI;
+               goto out;
        objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
        objs[AFTCOL_CHUNKS].size = query->size - chunks_offset;
        if (pb && !hs) { /* update pb's hash */
@@ -1429,35 +1455,32 @@ static int com_add_callback(const struct osl_object *query,
                HASH_TYPE *old_hash;
                ret = get_hash_of_row(pb, &old_hash);
                if (ret < 0)
-                       return ret;
+                       goto out;
                hash_to_asc(old_hash, old_asc);
                if (flags & ADD_FLAG_VERBOSE)
-                       PARA_NOTICE_LOG("file change: %s %s -> %s\n", path,
+                       para_printf(&msg, "file change: %s -> %s\n",
                                old_asc, asc);
                ret = osl_update_object(audio_file_table, pb, AFTCOL_HASH,
                        &objs[AFTCOL_HASH]);
                if (ret < 0)
-                       return ret;
+                       goto out;
        }
        if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
                const struct osl_row *row = pb? pb : hs;
                /* update afhi and chunk_table */
                if (flags & ADD_FLAG_VERBOSE)
-                       PARA_DEBUG_LOG("updating audio format handler info (%zd bytes)\n",
-                               objs[AFTCOL_AFHI].size);
+                       para_printf(&msg, "updating afhi and chunk table\n");
                ret = osl_update_object(audio_file_table, row, AFTCOL_AFHI,
                        &objs[AFTCOL_AFHI]);
                if (ret < 0)
-                       return ret;
-               if (flags & ADD_FLAG_VERBOSE)
-                       PARA_DEBUG_LOG("updating chunk table\n");
+                       goto out;
                ret = osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
                        &objs[AFTCOL_CHUNKS]);
-               if (ret < 0)
-                       return ret;
-               return mood_update_audio_file(row, NULL);
+               goto out;
        }
        /* new entry, use default afsi */
+       if (flags & ADD_FLAG_VERBOSE)
+               para_printf(&msg, "new file\n");
        default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
        default_afsi.audio_format_id = read_u8(buf + AFTROW_AUDIO_FORMAT_OFFSET);
 
@@ -1465,9 +1488,15 @@ static int com_add_callback(const struct osl_object *query,
        objs[AFTCOL_AFSI].size = AFSI_SIZE;
        save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
        ret = osl_add_and_get_row(audio_file_table, objs, &aft_row);
+out:
        if (ret < 0)
-               return ret;
-       return mood_update_audio_file(aft_row, NULL);
+               para_printf(&msg, "%s\n", PARA_STRERROR(-ret));
+       if (!msg.buf)
+               return 0;
+       result->data = msg.buf;
+       result->size = msg.size;
+       return 1;
+       // mood_update_audio_file(aft_row, NULL);
 }
 
 struct private_add_data {
@@ -1504,23 +1533,22 @@ static int hash_sister_callback(const struct osl_object *query,
        return 1;
 }
 
-static int add_one_audio_file(const char *arg, const void *private_data)
+static int add_one_audio_file(const char *path, const void *private_data)
 {
-       int ret;
+       int ret, ret2;
        uint8_t format_num = -1;
        const struct private_add_data *pad = private_data;
        struct audio_format_info afhi, *afhi_ptr = NULL;
        struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
        struct osl_object map, obj = {.data = NULL}, query, result;
-       char *path = NULL;
        HASH_TYPE hash[HASH_SIZE];
 
        afhi.header_offset = 0;
        afhi.header_len = 0;
-       ret = verify_path(arg, &path);
-       if (ret < 0)
+       ret = guess_audio_format(path);
+       if (ret < 0 && !(pad->flags & ADD_FLAG_ALL))
                goto out_free;
-       query.data = path;
+       query.data = (char *)path;
        query.size = strlen(path) + 1;
        ret = send_callback_request(path_brother_callback, &query, &result);
        if (ret < 0 && ret != -E_RB_KEY_NOT_FOUND)
@@ -1556,7 +1584,7 @@ static int add_one_audio_file(const char *arg, const void *private_data)
        if (pb && hs && hs == pb && (!(pad->flags & ADD_FLAG_FORCE))) {
                if (pad->flags & ADD_FLAG_VERBOSE)
                        ret = send_va_buffer(pad->fd,
-                               "not forcing update: %s\n", path);
+                               "%s exists, not forcing update\n", path);
                goto out_unmap;
        }
        /*
@@ -1570,25 +1598,34 @@ static int add_one_audio_file(const char *arg, const void *private_data)
                format_num = ret;
                afhi_ptr = &afhi;
        }
-       if (pad->flags & ADD_FLAG_VERBOSE)
-               send_va_buffer(pad->fd, "adding %s\n", path);
+       if (pad->flags & ADD_FLAG_VERBOSE) {
+               ret = send_va_buffer(pad->fd, "adding %s\n", path);
+               if (ret < 0)
+                       goto out_unmap;
+       }
        munmap(map.data, map.size);
        save_audio_file_info(hash, path, afhi_ptr, pad->flags, format_num, &obj);
        /* Ask afs to consider this entry for adding. */
-       ret = send_callback_request(com_add_callback, &obj, NULL);
+       ret = send_callback_request(com_add_callback, &obj, &result);
+       if (result.data && result.size) {
+               ret2 = send_va_buffer(pad->fd, "%s", (char *)result.data);
+               free(result.data);
+               if (ret >= 0 && ret2 < 0)
+                       ret = ret2;
+       }
        goto out_free;
 
 out_unmap:
        munmap(map.data, map.size);
 out_free:
-       if (ret < 0)
-               send_va_buffer(pad->fd, "failed to add %s (%s)\n", path?
-                       path : arg, PARA_STRERROR(-ret));
+       if (ret < 0 && ret != -E_SEND)
+               send_va_buffer(pad->fd, "failed to add %s (%s)\n", path,
+                       PARA_STRERROR(-ret));
        free(obj.data);
-       free(path);
        if (afhi_ptr)
                free(afhi_ptr->chunk_table);
-       return 1; /* it's not an error if not all files could be added */
+       /* it's not an error if not all files could be added */
+       return ret == -E_SEND? ret : 1;
 }
 
 int com_add(int fd, int argc, char * const * const argv)
@@ -1605,6 +1642,10 @@ int com_add(int fd, int argc, char * const * const argv)
                        i++;
                        break;
                }
+               if (!strcmp(arg, "-a")) {
+                       pad.flags |= ADD_FLAG_ALL;
+                       continue;
+               }
                if (!strcmp(arg, "-l")) {
                        pad.flags |= ADD_FLAG_LAZY;
                        continue;
@@ -1621,29 +1662,48 @@ int com_add(int fd, int argc, char * const * const argv)
        if (argc <= i)
                return -E_AFT_SYNTAX;
        for (; i < argc; i++) {
-               char *path = para_strdup(argv[i]);
-               size_t len = strlen(path);
-               while (len > 1 && path[--len] == '/')
-                       path[len] = '\0';
+               char *path;
+               ret = verify_path(argv[i], &path);
+               if (ret < 0) {
+                       ret = send_va_buffer(fd, "%s: %s\n", argv[i], PARA_STRERROR(-ret));
+                       if (ret < 0)
+                               return ret;
+                       continue;
+               }
                ret = stat(path, &statbuf);
-               if (ret < 0)
-                       PARA_NOTICE_LOG("failed to stat %s (%s)", path,
+               if (ret < 0) {
+                       ret = send_va_buffer(fd, "failed to stat %s (%s)\n", path,
                                strerror(errno));
+                       free(path);
+                       if (ret < 0)
+                               return ret;
+                       continue;
+               }
+               if (S_ISDIR(statbuf.st_mode))
+                       ret = for_each_file_in_dir(path, add_one_audio_file,
+                               &pad);
                else
-                       if (S_ISDIR(statbuf.st_mode))
-                               for_each_file_in_dir(path, add_one_audio_file,
-                                       &pad);
-                       else
-                               add_one_audio_file(path, &pad);
+                       ret = add_one_audio_file(path, &pad);
+               if (ret < 0) {
+                       send_va_buffer(fd, "%s: %s\n", path, PARA_STRERROR(-ret));
+                       free(path);
+                       return ret;
+               }
                free(path);
        }
-       ret = 1;
-       return ret;
+       return 1;
 
 }
 
+/**
+ * Flags used by the touch command.
+ *
+ * \sa com_touch().
+ */
 enum touch_flags {
+       /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
        TOUCH_FLAG_FNM_PATHNAME = 1,
+       /** Activates verbose mode. */
        TOUCH_FLAG_VERBOSE = 2
 };
 
@@ -1733,7 +1793,6 @@ static int com_touch_callback(const struct osl_object *query,
        return ret < 0? ret : 0;
 }
 
-
 int com_touch(int fd, int argc, char * const * const argv)
 {
        struct com_touch_options cto = {
@@ -1907,6 +1966,157 @@ int com_afs_rm(int fd, int argc,  char * const * const argv)
        return ret;
 }
 
+/**
+ * Flags used by the cpsi command.
+ *
+ * \sa com_cpsi().
+ */
+enum cpsi_flags {
+       /** Whether the lyrics id should be copied. */
+       CPSI_FLAG_COPY_LYRICS_ID = 1,
+       /** Whether the image id should be copied. */
+       CPSI_FLAG_COPY_IMAGE_ID = 2,
+       /** Whether the lastplayed time should be copied. */
+       CPSI_FLAG_COPY_LASTPLAYED = 4,
+       /** Whether the numplayed count should be copied. */
+       CPSI_FLAG_COPY_NUMPLAYED = 8,
+       /** Whether the attributes should be copied. */
+       CPSI_FLAG_COPY_ATTRIBUTES = 16,
+       /** Activates verbose mode. */
+       CPSI_FLAG_VERBOSE = 32,
+};
+
+struct cpsi_action_data {
+       unsigned flags;
+       unsigned num_copied;
+       struct para_buffer pb;
+       struct afs_info source_afsi;
+};
+
+static int copy_selector_info(__a_unused struct osl_table *table,
+               struct osl_row *row, const char *name, void *data)
+{
+       struct cpsi_action_data *cad = data;
+       struct osl_object target_afsi_obj;
+       int ret;
+       struct afs_info target_afsi;
+
+       ret = get_afsi_object_of_row(row, &target_afsi_obj);
+       if (ret < 0)
+               return ret;
+       load_afsi(&target_afsi, &target_afsi_obj);
+       if (cad->flags & CPSI_FLAG_COPY_LYRICS_ID)
+               target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
+       if (cad->flags & CPSI_FLAG_COPY_IMAGE_ID)
+               target_afsi.image_id = cad->source_afsi.image_id;
+       if (cad->flags & CPSI_FLAG_COPY_LASTPLAYED)
+               target_afsi.last_played = cad->source_afsi.last_played;
+       if (cad->flags & CPSI_FLAG_COPY_NUMPLAYED)
+               target_afsi.num_played = cad->source_afsi.num_played;
+       if (cad->flags & CPSI_FLAG_COPY_ATTRIBUTES)
+               target_afsi.attributes = cad->source_afsi.attributes;
+       save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
+       cad->num_copied++;
+       if (cad->flags & CPSI_FLAG_VERBOSE)
+               para_printf(&cad->pb, "copied afsi to %s\n", name);
+       return 1;
+}
+
+static int com_cpsi_callback(const struct osl_object *query,
+               struct osl_object *result)
+{
+       struct cpsi_action_data cad = {.flags = *(unsigned *)query->data};
+       int ret;
+       char *source_path = (char *)query->data + sizeof(cad.flags);
+
+       ret = get_afsi_of_path(source_path, &cad.source_afsi);
+       if (ret < 0)
+               goto out;
+       struct pattern_match_data pmd = {
+               .table = audio_file_table,
+               .loop_col_num = AFTCOL_HASH,
+               .match_col_num = AFTCOL_PATH,
+               .patterns = {.data = source_path + strlen(source_path) + 1,
+                       .size = query->size - sizeof(cad.flags)
+                               - strlen(source_path) - 1},
+               .data = &cad,
+               .action = copy_selector_info
+       };
+       ret = for_each_matching_row(&pmd);
+out:
+       if (ret < 0)
+               para_printf(&cad.pb, "%s\n", PARA_STRERROR(-ret));
+       if (cad.flags & CPSI_FLAG_VERBOSE) {
+               if (cad.num_copied)
+                       para_printf(&cad.pb, "copied requested afsi from %s "
+                               "to %u files\n",
+                               source_path, cad.num_copied);
+               else
+                       para_printf(&cad.pb, "nothing copied\n");
+       }
+       if (cad.pb.buf) {
+               result->data = cad.pb.buf;
+               result->size = cad.pb.size;
+               return 1;
+       }
+       return ret < 0? ret : 0;
+}
+
+int com_cpsi(int fd, int argc,  char * const * const argv)
+{
+       unsigned flags = 0;
+       int i, ret;
+       struct osl_object options = {.data = &flags, .size = sizeof(flags)},
+               result;
+
+       for (i = 1; i < argc; i++) {
+               const char *arg = argv[i];
+               if (arg[0] != '-')
+                       break;
+               if (!strcmp(arg, "--")) {
+                       i++;
+                       break;
+               }
+               if (!strcmp(arg, "-y")) {
+                       flags |= CPSI_FLAG_COPY_LYRICS_ID;
+                       continue;
+               }
+               if (!strcmp(arg, "-i")) {
+                       flags |= CPSI_FLAG_COPY_IMAGE_ID;
+                       continue;
+               }
+               if (!strcmp(arg, "-l")) {
+                       flags |= CPSI_FLAG_COPY_LASTPLAYED;
+                       continue;
+               }
+               if (!strcmp(arg, "-n")) {
+                       flags |= CPSI_FLAG_COPY_NUMPLAYED;
+                       continue;
+               }
+               if (!strcmp(arg, "-a")) {
+                       flags |= CPSI_FLAG_COPY_ATTRIBUTES;
+                       continue;
+               }
+               if (!strcmp(arg, "-v")) {
+                       flags |= CPSI_FLAG_VERBOSE;
+                       continue;
+               }
+               break;
+       }
+       if (i + 1 >= argc) /* need at least souce file and pattern */
+               return -E_AFT_SYNTAX;
+       if (!(flags & ~CPSI_FLAG_VERBOSE)) /* no copy flags given */
+               flags = ~(unsigned)CPSI_FLAG_VERBOSE | flags;
+       ret = send_option_arg_callback_request(&options, argc - i, argv + i,
+               com_cpsi_callback, &result);
+       if (ret > 0) {
+               send_buffer(fd, (char *)result.data);
+               free(result.data);
+       } else
+               send_va_buffer(fd, "%s\n", PARA_STRERROR(-ret));
+       return ret;
+}
+
 /* TODO: optionally fix problems by removing offending rows */
 static int check_audio_file(struct osl_row *row, void *data)
 {
@@ -1943,6 +2153,16 @@ static int check_audio_file(struct osl_row *row, void *data)
        return 1;
 }
 
+/**
+ * Check the audio file table for inconsistencies.
+ *
+ * \param query Unused.
+ * \param result Contains message string upon return.
+ *
+ * This function always succeeds.
+ *
+ * \sa com_check().
+ */
 int aft_check_callback(__a_unused const struct osl_object *query, struct osl_object *result)
 {
        struct para_buffer pb = {.buf = NULL};
@@ -1962,29 +2182,27 @@ int aft_check_callback(__a_unused const struct osl_object *query, struct osl_obj
  *
  * \sa osl_close_table().
  */
-void aft_shutdown(enum osl_close_flags flags)
+static void aft_close(void)
 {
-       osl_close_table(audio_file_table, flags);
+       osl_close_table(audio_file_table, OSL_MARK_CLEAN);
        audio_file_table = NULL;
 }
 
 /**
  * Open the audio file table.
  *
- * \param ti Gets initialized by this function.
- * \param db The database directory.
+ * \param dir The database directory.
  *
- * \return Positive on success, negative on errors.
+ * \return Standard.
  *
  * \sa osl_open_table().
  */
-int aft_init(struct table_info *ti, const char *db)
+static int aft_open(const char *dir)
 {
        int ret;
 
-       audio_file_table_desc.dir = db;
-       ti->desc = &audio_file_table_desc;
-       ret = osl_open_table(ti->desc, &audio_file_table);
+       audio_file_table_desc.dir = dir;
+       ret = osl_open_table(&audio_file_table_desc, &audio_file_table);
        if (ret >= 0) {
                unsigned num;
                osl_get_num_rows(audio_file_table, &num);
@@ -1993,5 +2211,21 @@ int aft_init(struct table_info *ti, const char *db)
        }
        PARA_INFO_LOG("failed to open audio file table\n");
        audio_file_table = NULL;
-       return ret == -E_NOENT? 1 : ret;
+       if (ret >= 0 || is_errno(-ret, ENOENT))
+               return 1;
+       return ret;
+}
+
+static int aft_create(const char *dir)
+{
+       audio_file_table_desc.dir = dir;
+       return osl_create_table(&audio_file_table_desc);
+}
+
+void aft_init(struct afs_table *t)
+{
+       t->name = audio_file_table_desc.name;
+       t->open = aft_open;
+       t->close = aft_close;
+       t->create = aft_create;
 }