Obtain afs status items directly from afs.
[paraslash.git] / aft.c
diff --git a/aft.c b/aft.c
index f425b6d..7027e7f 100644 (file)
--- a/aft.c
+++ b/aft.c
@@ -24,6 +24,7 @@
 #include "portable_io.h"
 
 static struct osl_table *audio_file_table;
+static char *current_status_items;
 
 /** The different sorting methods of the ls command. */
 enum ls_sorting_method {
@@ -352,23 +353,29 @@ enum afhi_offsets {
        CHUNK_TV_TV_USEC_OFFSET = 36,
        /** Number of channels is stored here. (1 byte) */
        AFHI_CHANNELS_OFFSET = 40,
-       /** EOF timeout in ms. (2 byte) */
-       AFHI_EOF_OFFSET = 41,
        /** The tag info position. */
-       AFHI_INFO_STRING_OFFSET = 43,
+       AFHI_INFO_STRING_OFFSET = 41,
        /** Minimal on-disk size of a valid afhi struct. */
-       MIN_AFHI_SIZE = 44
+       MIN_AFHI_SIZE = 47, /* at least 6 null bytes for techinfo/tags */
 };
 
 static unsigned sizeof_afhi_buf(const struct afh_info *afhi)
 {
        if (!afhi)
                return 0;
-       return strlen(afhi->info_string) + MIN_AFHI_SIZE;
+       return MIN_AFHI_SIZE
+               + strlen(afhi->techinfo)
+               + strlen(afhi->tags.artist)
+               + strlen(afhi->tags.title)
+               + strlen(afhi->tags.year)
+               + strlen(afhi->tags.album)
+               + strlen(afhi->tags.comment);
 }
 
 static void save_afhi(struct afh_info *afhi, char *buf)
 {
+       char *p;
+
        if (!afhi)
                return;
        write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
@@ -382,8 +389,14 @@ static void save_afhi(struct afh_info *afhi, char *buf)
        write_u32(buf + HEADER_OFFSET_OFFSET, afhi->header_offset);
        write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
        write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
-       write_u16(buf + AFHI_EOF_OFFSET, tv2ms(&afhi->eof_tv));
-       strcpy(buf + AFHI_INFO_STRING_OFFSET, afhi->info_string); /* OK */
+       p = buf + AFHI_INFO_STRING_OFFSET;
+       /* The sprintf's below are OK as our caller made sure that buf is large enough */
+       p += sprintf(p, "%s", afhi->techinfo) + 1;
+       p += sprintf(p, "%s", afhi->tags.artist) + 1;
+       p += sprintf(p, "%s", afhi->tags.title) + 1;
+       p += sprintf(p, "%s", afhi->tags.year) + 1;
+       p += sprintf(p, "%s", afhi->tags.album) + 1;
+       sprintf(p, "%s", afhi->tags.comment);
 }
 
 static void load_afhi(const char *buf, struct afh_info *afhi)
@@ -399,8 +412,12 @@ static void load_afhi(const char *buf, struct afh_info *afhi)
        afhi->header_offset = read_u32(buf + HEADER_OFFSET_OFFSET);
        afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
        afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
-       ms2tv(read_u16(buf + AFHI_EOF_OFFSET), &afhi->eof_tv);
-       afhi->info_string = para_strdup(buf + AFHI_INFO_STRING_OFFSET);
+       afhi->techinfo = buf + AFHI_INFO_STRING_OFFSET;
+       afhi->tags.artist = afhi->techinfo + strlen(afhi->techinfo) + 1;
+       afhi->tags.title = afhi->tags.artist + strlen(afhi->tags.artist) + 1;
+       afhi->tags.year = afhi->tags.title + strlen(afhi->tags.title) + 1;
+       afhi->tags.album = afhi->tags.year + strlen(afhi->tags.year) + 1;
+       afhi->tags.comment = afhi->tags.album + strlen(afhi->tags.album) + 1;
 }
 
 static unsigned sizeof_chunk_table(struct afh_info *afhi)
@@ -446,7 +463,7 @@ int aft_get_row_of_path(const char *path, struct osl_row **row)
  * Get the row of the audio file table corresponding to the given hash value.
  *
  * \param hash The hash value of the desired audio file.
- * \param row resul pointer.
+ * \param row Result pointer.
  *
  * \return Standard.
  */
@@ -891,10 +908,15 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
                "%s: %lu\n" /* seconds total */
                "%s: %s\n" /* last played time */
                "%s: %d\n" /* num_played */
-               "%s: %u\n" /* ampplification */
-               "%s" /* tag info */
+               "%s: %u\n" /* amplification */
                "%s: %lu\n" /* chunk time */
-               "%s: %lu\n", /* num chunks */
+               "%s: %lu\n" /* num chunks */
+               "%s: %s\n" /* techinfo */
+               "%s: %s\n" /* artist */
+               "%s: %s\n" /* title */
+               "%s: %s\n" /* year */
+               "%s: %s\n" /* album */
+               "%s: %s\n", /* comment */
                filename_lines,
                have_score? status_item_list[SI_SCORE] : "",
                        have_score? ": " : "",
@@ -913,9 +935,14 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
                status_item_list[SI_LAST_PLAYED], last_played_time,
                status_item_list[SI_NUM_PLAYED], afsi->num_played,
                status_item_list[SI_AMPLIFICATION], afsi->amp,
-               afhi->info_string,
                status_item_list[SI_CHUNK_TIME], tv2ms(&afhi->chunk_tv),
-               status_item_list[SI_NUM_CHUNKS], afhi->chunks_total
+               status_item_list[SI_NUM_CHUNKS], afhi->chunks_total,
+               status_item_list[SI_TECHINFO], afhi->techinfo,
+               status_item_list[SI_ARTIST], afhi->tags.artist,
+               status_item_list[SI_TITLE], afhi->tags.title,
+               status_item_list[SI_YEAR], afhi->tags.year,
+               status_item_list[SI_ALBUM], afhi->tags.album,
+               status_item_list[SI_COMMENT], afhi->tags.comment
        );
        if (ret < 0)
                goto out;
@@ -933,124 +960,9 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
        free(image_lines);
        free(filename_lines);
 out:
-       free(afhi->info_string);
        return ret;
 }
 
-/**
- * Write a list of audio-file related status items with empty values.
- *
- * \param buf Result pointer.
- *
- * This is used by vss when currently no audio file is open.
- */
-void make_empty_status_items(char *buf)
-{
-       sprintf(buf,
-               "%s: \n" /* path */
-               "%s: \n" /* dirname */
-               "%s: \n" /* basename */
-               "%s: \n" /* score */
-               "%s: \n" /* attributes bitmap */
-               "%s: \n" /* attributes txt */
-               "%s: \n" /* hash */
-               "%s: \n" /* image id */
-               "%s: \n" /* image name */
-               "%s: \n" /* lyrics id */
-               "%s: \n" /* lyrics name */
-               "%s: \n" /* bitrate */
-               "%s: \n" /* format */
-               "%s: \n" /* frequency */
-               "%s: \n" /* channels */
-               "%s: \n" /* duration */
-               "%s: \n" /* seconds total */
-               "%s: \n" /* num played */
-               "%s: \n" /* last played */
-               "%s: \n" /* audio file info */
-               "%s: \n" /* taginfo1 */
-               "%s: \n" /* taginfo2 */
-               "%s: \n" /* amplification */
-               ,
-               status_item_list[SI_PATH],
-               status_item_list[SI_DIRECTORY],
-               status_item_list[SI_BASENAME],
-               status_item_list[SI_SCORE],
-               status_item_list[SI_ATTRIBUTES_BITMAP],
-               status_item_list[SI_ATTRIBUTES_TXT],
-               status_item_list[SI_HASH],
-               status_item_list[SI_IMAGE_ID],
-               status_item_list[SI_IMAGE_NAME],
-               status_item_list[SI_LYRICS_ID],
-               status_item_list[SI_LYRICS_NAME],
-               status_item_list[SI_BITRATE],
-               status_item_list[SI_FORMAT],
-               status_item_list[SI_FREQUENCY],
-               status_item_list[SI_CHANNELS],
-               status_item_list[SI_DURATION],
-               status_item_list[SI_SECONDS_TOTAL],
-               status_item_list[SI_NUM_PLAYED],
-               status_item_list[SI_LAST_PLAYED],
-               status_item_list[SI_AUDIO_FILE_INFO],
-               status_item_list[SI_TAGINFO1],
-               status_item_list[SI_TAGINFO2],
-               status_item_list[SI_AMPLIFICATION]
-       );
-}
-
-static void fixup_taginfo(char *begin, char *end)
-{
-       char *p = begin;
-
-       for (;;) {
-               p = strchr(p, '\n');
-               if (!p)
-                       break;
-               if (p >= end - 1)
-                       break;
-               *p = ' ';
-               p++;
-       }
-}
-
-/* crap, remove this ASAP. */
-static int fixup_info_string(char *info_string)
-{
-       char *t1, *t2, *end;
-
-       if (strncmp(info_string, "audio_file_info:", 16))
-               return -ERRNO_TO_PARA_ERROR(EINVAL);
-       t1 = strstr(info_string, "\ntaginfo1:");
-       if (!t1)
-               return -ERRNO_TO_PARA_ERROR(EINVAL);
-       t2 = strstr(info_string, "\ntaginfo2: ");
-       if (!t2)
-               return -ERRNO_TO_PARA_ERROR(EINVAL);
-
-       end = t2 + strlen(t2) + 1;
-       fixup_taginfo(info_string + 16, t1);
-       fixup_taginfo(t1 + 10, t2);
-       fixup_taginfo(t2 + 10, end);
-
-       if (t1 - info_string < 80 && t2 - t1 < 80 && end - t2 < 80)
-               return 0;
-       if (t1 - info_string >= 80) {
-               memmove(info_string + 80, t1, end - t1);
-               t1 = info_string + 80;
-               t2 -= t1 - info_string - 80;
-               end -= t1 - info_string - 80;
-       }
-       if (t2 - t1 >= 80) {
-               memmove(t1 + 80, t2, end - t2);
-               end -= t2 - t1 - 80;
-               t2 = t1 + 80;
-       }
-       if (end - t2 >= 80) {
-               t2[78] = '\n';
-               t2[79] = '\0';
-       }
-       return 1;
-}
-
 static int make_status_items(struct audio_file_data *afd,
                struct afs_info *afsi, char *path, long score,
                HASH_TYPE *hash)
@@ -1066,26 +978,17 @@ static int make_status_items(struct audio_file_data *afd,
                .flags = LS_FLAG_FULL_PATH | LS_FLAG_ADMISSIBLE_ONLY,
                .mode = LS_MODE_VERBOSE,
        };
-       struct para_buffer pb = {.max_size = VERBOSE_LS_OUTPUT_SIZE - 1};
+       struct para_buffer pb = {.max_size = SHMMAX - 1};
        time_t current_time;
        int ret;
 
-       ret = fixup_info_string(afd->afhi.info_string);
-       if (ret < 0) {
-               PARA_WARNING_LOG("ignoring invalid tag info\n");
-               afd->afhi.info_string[0] = '\0';
-       } else if (ret)
-               PARA_NOTICE_LOG("truncated overlong tag info\n");
        time(&current_time);
-       ret = print_list_item(&d, &opts, &pb, current_time); /* frees info string */
-       afd->afhi.info_string = NULL;
+       ret = print_list_item(&d, &opts, &pb, current_time);
        if (ret < 0)
-               goto out;
-       strncpy(afd->verbose_ls_output, pb.buf, VERBOSE_LS_OUTPUT_SIZE);
-       afd->verbose_ls_output[VERBOSE_LS_OUTPUT_SIZE - 1] = '\0';
-out:
-       free(pb.buf);
-       return ret;
+               return ret;
+       free(current_status_items);
+       current_status_items = pb.buf;
+       return 1;
 }
 
 /**
@@ -1157,7 +1060,6 @@ int open_and_update_audio_file(struct osl_row *aft_row, long score,
        ret = save_afd(afd);
 err:
        free(afd->afhi.chunk_table);
-       free(afd->afhi.info_string);
        osl_close_disk_object(&chunk_table_obj);
        return ret;
 }
@@ -1360,7 +1262,6 @@ static int prepare_ls_row(struct osl_row *row, void *ls_opts)
        }
        return 1;
 err:
-       free(d->afhi.info_string);
        return ret;
 }
 
@@ -1924,7 +1825,12 @@ out_free:
        free(obj.data);
        if (afhi_ptr) {
                free(afhi_ptr->chunk_table);
-               free(afhi_ptr->info_string);
+               free(afhi_ptr->techinfo);
+               free(afhi_ptr->tags.artist);
+               free(afhi_ptr->tags.title);
+               free(afhi_ptr->tags.year);
+               free(afhi_ptr->tags.album);
+               free(afhi_ptr->tags.comment);
        }
        /* Stop adding files only on send errors. */
        return send_ret;
@@ -2471,6 +2377,18 @@ int com_cpsi(int fd, int argc,  char * const * const argv)
        return ret;
 }
 
+void afs_stat_callback(int fd, __a_unused const struct osl_object *query)
+{
+       if (current_status_items)
+               pass_buffer_as_shm(current_status_items,
+                       strlen(current_status_items), &fd);
+}
+
+int send_afs_status(int fd)
+{
+       return send_callback_request(afs_stat_callback, NULL, send_result, &fd);
+}
+
 /* TODO: optionally fix problems by removing offending rows */
 static int check_audio_file(struct osl_row *row, void *data)
 {
@@ -2549,6 +2467,8 @@ static void aft_close(void)
 {
        osl_close_table(audio_file_table, OSL_MARK_CLEAN);
        audio_file_table = NULL;
+       free(current_status_items);
+       current_status_items = NULL;
 }
 
 /**