src/pulsecore/cli-command.c

/***
  This file is part of PulseAudio.

  Copyright 2004-2006 Lennart Poettering
  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB

  PulseAudio is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published
  by the Free Software Foundation; either version 2.1 of the License,
  or (at your option) any later version.

  PulseAudio 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 Lesser General Public License
  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <ltdl.h>
#include <sys/stat.h>
#include <dirent.h>
#include <time.h>
#include <fcntl.h>
#include <ctype.h>

#include <pulse/xmalloc.h>
#include <pulse/error.h>

#include <pulsecore/module.h>
#include <pulsecore/sink.h>
#include <pulsecore/source.h>
#include <pulsecore/client.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/source-output.h>
#include <pulsecore/tokenizer.h>
#include <pulsecore/strbuf.h>
#include <pulsecore/namereg.h>
#include <pulsecore/cli-text.h>
#include <pulsecore/core-scache.h>
#include <pulsecore/sound-file.h>
#include <pulsecore/play-memchunk.h>
#include <pulsecore/sound-file-stream.h>
#include <pulsecore/shared.h>
#include <pulsecore/core-util.h>
#include <pulsecore/message-handler.h>
#include <pulsecore/core-error.h>
#include <pulsecore/modinfo.h>
#include <pulsecore/dynarray.h>

#include "cli-command.h"

struct command {
    const char *name;
    int (*proc) (pa_core *c, pa_tokenizer*t, pa_strbuf *buf, bool *fail);
    const char *help;
    unsigned args;
};

#define META_INCLUDE ".include"
#define META_FAIL ".fail"
#define META_NOFAIL ".nofail"
#define META_IFEXISTS ".ifexists"
#define META_ELSE ".else"
#define META_ENDIF ".endif"

enum {
    IFSTATE_NONE = -1,
    IFSTATE_FALSE = 0,
    IFSTATE_TRUE = 1,
};

/* Prototypes for all available commands */
static int pa_cli_command_exit(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_help(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_modules(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_clients(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_cards(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sinks(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sources(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_inputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_outputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_stat(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_info(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_unload(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_describe(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_input_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_output_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_input_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_output_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_kill_client(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_kill_sink_input(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_kill_source_output(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_scache_play(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_scache_remove(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_scache_list(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_scache_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_scache_load_dir(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_play_file(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_dump(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_list_shared_props(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_move_sink_input(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_move_source_output(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_vacuum(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_suspend_sink(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_suspend_source(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_suspend(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_log_target(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_log_level(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_log_meta(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_log_time(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_log_backtrace(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_update_sink_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_update_source_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_update_sink_input_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_update_source_output_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_card_profile(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_sink_port(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_source_port(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_port_offset(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_dump_volumes(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);
static int pa_cli_command_send_message_to_object(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail);

/* A method table for all available commands */

static const struct command commands[] = {
    { "help",                    pa_cli_command_help,               "Show this help",               1 },
    { "list-modules",            pa_cli_command_modules,            "List loaded modules",          1 },
    { "list-cards",              pa_cli_command_cards,              "List cards",                   1 },
    { "list-sinks",              pa_cli_command_sinks,              "List loaded sinks",            1 },
    { "list-sources",            pa_cli_command_sources,            "List loaded sources",          1 },
    { "list-clients",            pa_cli_command_clients,            "List loaded clients",          1 },
    { "list-sink-inputs",        pa_cli_command_sink_inputs,        "List sink inputs",             1 },
    { "list-source-outputs",     pa_cli_command_source_outputs,     "List source outputs",          1 },
    { "stat",                    pa_cli_command_stat,               "Show memory block statistics", 1 },
    { "info",                    pa_cli_command_info,               "Show comprehensive status",    1 },
    { "ls",                      pa_cli_command_info,               NULL,                           1 },
    { "list",                    pa_cli_command_info,               NULL,                           1 },
    { "load-module",             pa_cli_command_load,               "Load a module (args: name, arguments)", 3},
    { "unload-module",           pa_cli_command_unload,             "Unload a module (args: index|name)", 2},
    { "describe-module",         pa_cli_command_describe,           "Describe a module (arg: name)", 2},
    { "set-sink-volume",         pa_cli_command_sink_volume,        "Set the volume of a sink (args: index|name, volume)", 3},
    { "set-source-volume",       pa_cli_command_source_volume,      "Set the volume of a source (args: index|name, volume)", 3},
    { "set-sink-mute",           pa_cli_command_sink_mute,          "Set the mute switch of a sink (args: index|name, bool)", 3},
    { "set-source-mute",         pa_cli_command_source_mute,        "Set the mute switch of a source (args: index|name, bool)", 3},
    { "set-sink-input-volume",   pa_cli_command_sink_input_volume,  "Set the volume of a sink input (args: index, volume)", 3},
    { "set-source-output-volume",pa_cli_command_source_output_volume,"Set the volume of a source output (args: index, volume)", 3},
    { "set-sink-input-mute",     pa_cli_command_sink_input_mute,    "Set the mute switch of a sink input (args: index, bool)", 3},
    { "set-source-output-mute",  pa_cli_command_source_output_mute, "Set the mute switch of a source output (args: index, bool)", 3},
    { "set-default-sink",        pa_cli_command_sink_default,       "Set the default sink (args: index|name)", 2},
    { "set-default-source",      pa_cli_command_source_default,     "Set the default source (args: index|name)", 2},
    { "set-card-profile",        pa_cli_command_card_profile,       "Change the profile of a card (args: index|name, profile-name)", 3},
    { "set-sink-port",           pa_cli_command_sink_port,          "Change the port of a sink (args: index|name, port-name)", 3},
    { "set-source-port",         pa_cli_command_source_port,        "Change the port of a source (args: index|name, port-name)", 3},
    { "set-port-latency-offset", pa_cli_command_port_offset,        "Change the latency of a port (args: card-index|card-name, port-name, latency-offset)", 4},
    { "suspend-sink",            pa_cli_command_suspend_sink,       "Suspend sink (args: index|name, bool)", 3},
    { "suspend-source",          pa_cli_command_suspend_source,     "Suspend source (args: index|name, bool)", 3},
    { "suspend",                 pa_cli_command_suspend,            "Suspend all sinks and all sources (args: bool)", 2},
    { "move-sink-input",         pa_cli_command_move_sink_input,    "Move sink input to another sink (args: index, sink)", 3},
    { "move-source-output",      pa_cli_command_move_source_output, "Move source output to another source (args: index, source)", 3},
    { "update-sink-proplist",    pa_cli_command_update_sink_proplist, "Update the properties of a sink (args: index|name, properties)", 3},
    { "update-source-proplist",  pa_cli_command_update_source_proplist, "Update the properties of a source (args: index|name, properties)", 3},
    { "update-sink-input-proplist", pa_cli_command_update_sink_input_proplist, "Update the properties of a sink input (args: index, properties)", 3},
    { "update-source-output-proplist", pa_cli_command_update_source_output_proplist, "Update the properties of a source output (args: index, properties)", 3},
    { "list-samples",            pa_cli_command_scache_list,        "List all entries in the sample cache", 1},
    { "play-sample",             pa_cli_command_scache_play,        "Play a sample from the sample cache (args: name, sink|index)", 3},
    { "remove-sample",           pa_cli_command_scache_remove,      "Remove a sample from the sample cache (args: name)", 2},
    { "load-sample",             pa_cli_command_scache_load,        "Load a sound file into the sample cache (args: name, filename)", 3},
    { "load-sample-lazy",        pa_cli_command_scache_load,        "Lazily load a sound file into the sample cache (args: name, filename)", 3},
    { "load-sample-dir-lazy",    pa_cli_command_scache_load_dir,    "Lazily load all files in a directory into the sample cache (args: pathname)", 2},
    { "kill-client",             pa_cli_command_kill_client,        "Kill a client (args: index)", 2},
    { "kill-sink-input",         pa_cli_command_kill_sink_input,    "Kill a sink input (args: index)", 2},
    { "kill-source-output",      pa_cli_command_kill_source_output, "Kill a source output (args: index)", 2},
    { "set-log-target",          pa_cli_command_log_target,         "Change the log target (args: null|auto|syslog|stderr|file:PATH|newfile:PATH)", 2},
    { "set-log-level",           pa_cli_command_log_level,          "Change the log level (args: numeric level)", 2},
    { "set-log-meta",            pa_cli_command_log_meta,           "Show source code location in log messages (args: bool)", 2},
    { "set-log-time",            pa_cli_command_log_time,           "Show timestamps in log messages (args: bool)", 2},
    { "set-log-backtrace",       pa_cli_command_log_backtrace,      "Show backtrace in log messages (args: frames)", 2},
    { "send-message",            pa_cli_command_send_message_to_object, "Send a message to an object (args: recipient, message, message_parameters)", 4},
    { "play-file",               pa_cli_command_play_file,          "Play a sound file (args: filename, sink|index)", 3},
    { "dump",                    pa_cli_command_dump,               "Dump daemon configuration", 1},
    { "dump-volumes",            pa_cli_command_dump_volumes,       "Debug: Show the state of all volumes", 1 },
    { "shared",                  pa_cli_command_list_shared_props,  "Debug: Show shared properties", 1},
    { "exit",                    pa_cli_command_exit,               "Terminate the daemon",         1 },
    { "vacuum",                  pa_cli_command_vacuum,             NULL, 1},
    { NULL, NULL, NULL, 0 }
};

static const char whitespace[] = " \t\n\r";
static const char linebreak[] = "\n\r";

static uint32_t parse_index(const char *n) {
    uint32_t idx;

    if (pa_atou(n, &idx) < 0)
        return (uint32_t) PA_IDXSET_INVALID;

    return idx;
}

static int pa_cli_command_exit(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (pa_core_exit(c, false, 0) < 0)
        pa_strbuf_puts(buf, "Not allowed to terminate daemon.\n");

    return 0;
}

static int pa_cli_command_help(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const struct command*command;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_strbuf_puts(buf, "Available commands:\n");

    for (command = commands; command->name; command++)
        if (command->help)
            pa_strbuf_printf(buf, "    %-25s %s\n", command->name, command->help);
    return 0;
}

static int pa_cli_command_modules(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_module_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_clients(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_client_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_cards(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_card_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_sinks(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_sink_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_sources(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_source_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_sink_inputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_sink_input_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_source_outputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_source_output_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_stat(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char ss[PA_SAMPLE_SPEC_SNPRINT_MAX];
    char cm[PA_CHANNEL_MAP_SNPRINT_MAX];
    char bytes[PA_BYTES_SNPRINT_MAX];
    const pa_mempool_stat *mstat;
    unsigned k;

    static const char* const type_table[PA_MEMBLOCK_TYPE_MAX] = {
        [PA_MEMBLOCK_POOL] = "POOL",
        [PA_MEMBLOCK_POOL_EXTERNAL] = "POOL_EXTERNAL",
        [PA_MEMBLOCK_APPENDED] = "APPENDED",
        [PA_MEMBLOCK_USER] = "USER",
        [PA_MEMBLOCK_FIXED] = "FIXED",
        [PA_MEMBLOCK_IMPORTED] = "IMPORTED",
    };

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    mstat = pa_mempool_get_stat(c->mempool);

    pa_strbuf_printf(buf, "Memory blocks currently allocated: %u, size: %s.\n",
                     (unsigned) pa_atomic_load(&mstat->n_allocated),
                     pa_bytes_snprint(bytes, sizeof(bytes), (unsigned) pa_atomic_load(&mstat->allocated_size)));

    pa_strbuf_printf(buf, "Memory blocks allocated during the whole lifetime: %u, size: %s.\n",
                     (unsigned) pa_atomic_load(&mstat->n_accumulated),
                     pa_bytes_snprint(bytes, sizeof(bytes), (unsigned) pa_atomic_load(&mstat->accumulated_size)));

    pa_strbuf_printf(buf, "Memory blocks imported from other processes: %u, size: %s.\n",
                     (unsigned) pa_atomic_load(&mstat->n_imported),
                     pa_bytes_snprint(bytes, sizeof(bytes), (unsigned) pa_atomic_load(&mstat->imported_size)));

    pa_strbuf_printf(buf, "Memory blocks exported to other processes: %u, size: %s.\n",
                     (unsigned) pa_atomic_load(&mstat->n_exported),
                     pa_bytes_snprint(bytes, sizeof(bytes), (unsigned) pa_atomic_load(&mstat->exported_size)));

    pa_strbuf_printf(buf, "Total sample cache size: %s.\n",
                     pa_bytes_snprint(bytes, sizeof(bytes), (unsigned) pa_scache_total_size(c)));

    pa_strbuf_printf(buf, "Default sample spec: %s\n",
                     pa_sample_spec_snprint(ss, sizeof(ss), &c->default_sample_spec));

    pa_strbuf_printf(buf, "Default channel map: %s\n",
                     pa_channel_map_snprint(cm, sizeof(cm), &c->default_channel_map));

    pa_strbuf_printf(buf, "Default sink name: %s\n"
                     "Default source name: %s\n",
                     c->default_sink ? c->default_sink->name : "none",
                     c->default_source ? c->default_source->name : "none");

    for (k = 0; k < PA_MEMBLOCK_TYPE_MAX; k++)
        pa_strbuf_printf(buf,
                         "Memory blocks of type %s: %u allocated/%u accumulated.\n",
                         type_table[k],
                         (unsigned) pa_atomic_load(&mstat->n_allocated_by_type[k]),
                         (unsigned) pa_atomic_load(&mstat->n_accumulated_by_type[k]));

    return 0;
}

static int pa_cli_command_info(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_cli_command_stat(c, t, buf, fail);
    pa_cli_command_modules(c, t, buf, fail);
    pa_cli_command_sinks(c, t, buf, fail);
    pa_cli_command_sources(c, t, buf, fail);
    pa_cli_command_clients(c, t, buf, fail);
    pa_cli_command_cards(c, t, buf, fail);
    pa_cli_command_sink_inputs(c, t, buf, fail);
    pa_cli_command_source_outputs(c, t, buf, fail);
    pa_cli_command_scache_list(c, t, buf, fail);
    return 0;
}

static int pa_cli_command_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *name;
    pa_error_code_t err;
    pa_module *m = NULL;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(name = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify the module name and optionally arguments.\n");
        return -1;
    }

    if ((err = pa_module_load(&m, c, name,  pa_tokenizer_get(t, 2))) < 0) {
        if (err == PA_ERR_EXIST) {
            pa_strbuf_puts(buf, "Module already loaded; ignoring.\n");
        } else {
            pa_strbuf_puts(buf, "Module load failed.\n");
            return -1;
        }
    }

    return 0;
}

static int pa_cli_command_unload(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_module *m;
    uint32_t idx;
    const char *i;
    bool unloaded = false;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(i = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify the module index or name.\n");
        return -1;
    }

    if (pa_atou(i, &idx) >= 0) {
        if (!(m = pa_idxset_get_by_index(c->modules, idx))) {
            pa_strbuf_puts(buf, "Invalid module index.\n");
            return -1;
        }

        pa_module_unload(m, false);

    } else {
        PA_IDXSET_FOREACH(m, c->modules, idx)
            if (pa_streq(i, m->name)) {
                unloaded = true;
                pa_module_unload(m, false);
            }

        if (unloaded == false) {
            pa_strbuf_printf(buf, "Module %s not loaded.\n", i);
            return -1;
        }
    }

    return 0;
}

static int pa_cli_command_describe(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *name;
    pa_modinfo *i;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(name = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify the module name.\n");
        return -1;
    }

    if ((i = pa_modinfo_get_by_name(name))) {

        pa_strbuf_printf(buf, "Name: %s\n", name);

        if (!i->description && !i->version && !i->author && !i->usage)
            pa_strbuf_printf(buf, "No module information available\n");
        else {
            if (i->version)
                pa_strbuf_printf(buf, "Version: %s\n", i->version);
            if (i->description)
                pa_strbuf_printf(buf, "Description: %s\n", i->description);
            if (i->author)
                pa_strbuf_printf(buf, "Author: %s\n", i->author);
            if (i->usage)
                pa_strbuf_printf(buf, "Usage: %s\n", i->usage);
            pa_strbuf_printf(buf, "Load Once: %s\n", pa_yes_no(i->load_once));
            if (i->deprecated)
                pa_strbuf_printf(buf, "Warning, deprecated: %s\n", i->deprecated);
        }

        pa_modinfo_free(i);
    } else
        pa_strbuf_puts(buf, "Failed to open module.\n");

    return 0;
}

static int pa_cli_command_sink_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *v;
    pa_sink *sink;
    uint32_t volume;
    pa_cvolume cvolume;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x10000 is normal volume)\n");
        return -1;
    }

    if (pa_atou(v, &volume) < 0) {
        pa_strbuf_puts(buf, "Failed to parse volume.\n");
        return -1;
    }

    if (!PA_VOLUME_IS_VALID(volume)) {
        pa_strbuf_puts(buf, "Volume outside permissible range.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    pa_cvolume_set(&cvolume, 1, volume);
    pa_sink_set_volume(sink, &cvolume, true, true);
    return 0;
}

static int pa_cli_command_sink_input_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *v;
    pa_sink_input *si;
    pa_volume_t volume;
    pa_cvolume cvolume;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x10000 is normal volume)\n");
        return -1;
    }

    if (pa_atou(v, &volume) < 0) {
        pa_strbuf_puts(buf, "Failed to parse volume.\n");
        return -1;
    }

    if (!PA_VOLUME_IS_VALID(volume)) {
        pa_strbuf_puts(buf, "Volume outside permissible range.\n");
        return -1;
    }

    if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx))) {
        pa_strbuf_puts(buf, "No sink input found with this index.\n");
        return -1;
    }

    if (!si->volume_writable) {
        pa_strbuf_puts(buf, "This sink input's volume can't be changed.\n");
        return -1;
    }

    pa_cvolume_set(&cvolume, 1, volume);
    pa_sink_input_set_volume(si, &cvolume, true, true);
    return 0;
}

static int pa_cli_command_source_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *v;
    pa_source *source;
    uint32_t volume;
    pa_cvolume cvolume;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x10000 is normal volume)\n");
        return -1;
    }

    if (pa_atou(v, &volume) < 0) {
        pa_strbuf_puts(buf, "Failed to parse volume.\n");
        return -1;
    }

    if (!PA_VOLUME_IS_VALID(volume)) {
        pa_strbuf_puts(buf, "Volume outside permissible range.\n");
        return -1;
    }

    if (!(source = pa_namereg_get(c, n, PA_NAMEREG_SOURCE))) {
        pa_strbuf_puts(buf, "No source found by this name or index.\n");
        return -1;
    }

    pa_cvolume_set(&cvolume, 1, volume);
    pa_source_set_volume(source, &cvolume, true, true);
    return 0;
}

static int pa_cli_command_source_output_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *v;
    pa_source_output *so;
    pa_volume_t volume;
    pa_cvolume cvolume;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x10000 is normal volume)\n");
        return -1;
    }

    if (pa_atou(v, &volume) < 0) {
        pa_strbuf_puts(buf, "Failed to parse volume.\n");
        return -1;
    }

    if (!PA_VOLUME_IS_VALID(volume)) {
        pa_strbuf_puts(buf, "Volume outside permissible range.\n");
        return -1;
    }

    if (!(so = pa_idxset_get_by_index(c->source_outputs, idx))) {
        pa_strbuf_puts(buf, "No source output found with this index.\n");
        return -1;
    }

    if (!so->volume_writable) {
        pa_strbuf_puts(buf, "This source output's volume can't be changed.\n");
        return -1;
    }

    pa_cvolume_set(&cvolume, 1, volume);
    pa_source_output_set_volume(so, &cvolume, true, true);
    return 0;
}

static int pa_cli_command_sink_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *m;
    pa_sink *sink;
    int mute;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if (!(m = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a mute switch setting (0/1).\n");
        return -1;
    }

    if ((mute = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse mute switch.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    pa_sink_set_mute(sink, mute, true);
    return 0;
}

static int pa_cli_command_source_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *m;
    pa_source *source;
    int mute;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    if (!(m = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a mute switch setting (0/1).\n");
        return -1;
    }

    if ((mute = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse mute switch.\n");
        return -1;
    }

    if (!(source = pa_namereg_get(c, n, PA_NAMEREG_SOURCE))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    pa_source_set_mute(source, mute, true);
    return 0;
}

static int pa_cli_command_update_sink_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *s;
    pa_sink *sink;
    pa_proplist *p;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if (!(s = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a \"key=value\" argument.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    if (!(p = pa_proplist_from_string(s))) {
        pa_strbuf_puts(buf, "Failed to parse proplist.\n");
        return -1;
    }

    pa_sink_update_proplist(sink, PA_UPDATE_REPLACE, p);

    pa_proplist_free(p);

    return 0;
}

static int pa_cli_command_update_source_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *s;
    pa_source *source;
    pa_proplist *p;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    if (!(s = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a \"key=value\" argument.\n");
        return -1;
    }

    if (!(source = pa_namereg_get(c, n, PA_NAMEREG_SOURCE))) {
        pa_strbuf_puts(buf, "No source found by this name or index.\n");
        return -1;
    }

    if (!(p = pa_proplist_from_string(s))) {
        pa_strbuf_puts(buf, "Failed to parse proplist.\n");
        return -1;
    }

    pa_source_update_proplist(source, PA_UPDATE_REPLACE, p);

    pa_proplist_free(p);

    return 0;
}

static int pa_cli_command_update_sink_input_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *s;
    pa_sink_input *si;
    uint32_t idx;
    pa_proplist *p;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input either by index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(s = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a \"key=value\" argument.\n");
        return -1;
    }

    if (!(si = pa_idxset_get_by_index(c->sink_inputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No sink input found with this index.\n");
        return -1;
    }

    if (!(p = pa_proplist_from_string(s))) {
        pa_strbuf_puts(buf, "Failed to parse proplist.\n");
        return -1;
    }

    pa_sink_input_update_proplist(si, PA_UPDATE_REPLACE, p);

    pa_proplist_free(p);

    return 0;
}

static int pa_cli_command_update_source_output_proplist(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *s;
    pa_source_output *so;
    uint32_t idx;
    pa_proplist *p;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(s = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a \"key=value\" argument.\n");
        return -1;
    }

    if (!(so = pa_idxset_get_by_index(c->source_outputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No source output found with this index.\n");
        return -1;
    }

    if (!(p = pa_proplist_from_string(s))) {
        pa_strbuf_puts(buf, "Failed to parse proplist.\n");
        return -1;
    }

    pa_source_output_update_proplist(so, PA_UPDATE_REPLACE, p);

    pa_proplist_free(p);

    return 0;
}

static int pa_cli_command_sink_input_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *v;
    pa_sink_input *si;
    uint32_t idx;
    int mute;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a mute switch setting (0/1).\n");
        return -1;
    }

    if ((mute = pa_parse_boolean(v)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse mute switch.\n");
        return -1;
    }

    if (!(si = pa_idxset_get_by_index(c->sink_inputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No sink input found with this index.\n");
        return -1;
    }

    pa_sink_input_set_mute(si, mute, true);
    return 0;
}

static int pa_cli_command_source_output_mute(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *v;
    pa_source_output *so;
    uint32_t idx;
    int mute;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a mute switch setting (0/1).\n");
        return -1;
    }

    if ((mute = pa_parse_boolean(v)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse mute switch.\n");
        return -1;
    }

    if (!(so = pa_idxset_get_by_index(c->source_outputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No source output found with this index.\n");
        return -1;
    }

    pa_source_output_set_mute(so, mute, true);
    return 0;
}

static int pa_cli_command_sink_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n;
    pa_sink *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if ((s = pa_namereg_get(c, n, PA_NAMEREG_SINK)))
        pa_core_set_configured_default_sink(c, s->name);
    else
        pa_strbuf_printf(buf, "Sink %s does not exist.\n", n);

    return 0;
}

static int pa_cli_command_source_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n;
    pa_source *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    if ((s = pa_namereg_get(c, n, PA_NAMEREG_SOURCE)))
        pa_core_set_configured_default_source(c, s->name);
    else
        pa_strbuf_printf(buf, "Source %s does not exist.\n", n);
    return 0;
}

static int pa_cli_command_kill_client(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n;
    pa_client *client;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a client by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(client = pa_idxset_get_by_index(c->clients, idx))) {
        pa_strbuf_puts(buf, "No client found by this index.\n");
        return -1;
    }

    pa_client_kill(client);
    return 0;
}

static int pa_cli_command_kill_sink_input(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n;
    pa_sink_input *sink_input;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(sink_input = pa_idxset_get_by_index(c->sink_inputs, idx))) {
        pa_strbuf_puts(buf, "No sink input found by this index.\n");
        return -1;
    }

    pa_sink_input_kill(sink_input);
    return 0;
}

static int pa_cli_command_kill_source_output(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n;
    pa_source_output *source_output;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(source_output = pa_idxset_get_by_index(c->source_outputs, idx))) {
        pa_strbuf_puts(buf, "No source output found by this index.\n");
        return -1;
    }

    pa_source_output_kill(source_output);
    return 0;
}

static int pa_cli_command_scache_list(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    char *s;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_assert_se(s = pa_scache_list_to_string(c));
    pa_strbuf_puts(buf, s);
    pa_xfree(s);

    return 0;
}

static int pa_cli_command_scache_play(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *sink_name;
    pa_sink *sink;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1)) || !(sink_name = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a sample name and a sink name.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink by that name.\n");
        return -1;
    }

    if (pa_scache_play_item(c, n, sink, PA_VOLUME_NORM, NULL, &idx) < 0) {
        pa_strbuf_puts(buf, "Failed to play sample.\n");
        return -1;
    }

    pa_strbuf_printf(buf, "Playing on sink input #%i\n", idx);

    return 0;
}

static int pa_cli_command_scache_remove(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sample name.\n");
        return -1;
    }

    if (pa_scache_remove_item(c, n) < 0) {
        pa_strbuf_puts(buf, "Failed to remove sample.\n");
        return -1;
    }

    return 0;
}

static int pa_cli_command_scache_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *fname, *n;
    int r;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(fname = pa_tokenizer_get(t, 2)) || !(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a file name and a sample name.\n");
        return -1;
    }

    if (strstr(pa_tokenizer_get(t, 0), "lazy"))
        r = pa_scache_add_file_lazy(c, n, fname, NULL);
    else
        r = pa_scache_add_file(c, n, fname, NULL);

    if (r < 0)
        pa_strbuf_puts(buf, "Failed to load sound file.\n");

    return 0;
}

static int pa_cli_command_scache_load_dir(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *pname;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(pname = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a path name.\n");
        return -1;
    }

    if (pa_scache_add_directory_lazy(c, pname) < 0) {
        pa_strbuf_puts(buf, "Failed to load directory.\n");
        return -1;
    }

    return 0;
}

static int pa_cli_command_play_file(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *fname, *sink_name;
    pa_sink *sink;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(fname = pa_tokenizer_get(t, 1)) || !(sink_name = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a file name and a sink name.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink by that name.\n");
        return -1;
    }
#ifdef SNDFILE_ENABLE
    if (pa_play_file(sink, fname, NULL) < 0) {
        pa_strbuf_puts(buf, "Failed to play sound file.\n");
        return -1;
    }
#else
    return -1;
#endif
    return 0;
}

static int pa_cli_command_list_shared_props(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_shared_dump(c, buf);
    return 0;
}

static int pa_cli_command_vacuum(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    pa_mempool_vacuum(c->mempool);

    return 0;
}

static int pa_cli_command_move_sink_input(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *k;
    pa_sink_input *si;
    pa_sink *sink;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(k = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a sink.\n");
        return -1;
    }

    if (!(si = pa_idxset_get_by_index(c->sink_inputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No sink input found with this index.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, k, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    if (pa_sink_input_move_to(si, sink, true) < 0) {
        pa_strbuf_puts(buf, "Moved failed.\n");
        return -1;
    }
    return 0;
}

static int pa_cli_command_move_source_output(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *k;
    pa_source_output *so;
    pa_source *source;
    uint32_t idx;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(k = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a source.\n");
        return -1;
    }

    if (!(so = pa_idxset_get_by_index(c->source_outputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No source output found with this index.\n");
        return -1;
    }

    if (!(source = pa_namereg_get(c, k, PA_NAMEREG_SOURCE))) {
        pa_strbuf_puts(buf, "No source found by this name or index.\n");
        return -1;
    }

    if (pa_source_output_move_to(so, source, true) < 0) {
        pa_strbuf_puts(buf, "Moved failed.\n");
        return -1;
    }
    return 0;
}

static int pa_cli_command_suspend_sink(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *m;
    pa_sink *sink;
    int suspend, r;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if (!(m = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a suspend switch setting (0/1).\n");
        return -1;
    }

    if ((suspend = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse suspend switch.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    pa_log_debug("%s of sink %s requested via CLI.", suspend ? "Suspending" : "Resuming", sink->name);

    if ((r = pa_sink_suspend(sink, suspend, PA_SUSPEND_USER)) < 0)
        pa_strbuf_printf(buf, "Failed to resume/suspend sink: %s\n", pa_strerror(r));

    return 0;
}

static int pa_cli_command_suspend_source(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *m;
    pa_source *source;
    int suspend, r;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    if (!(m = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a suspend switch setting (0/1).\n");
        return -1;
    }

    if ((suspend = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse suspend switch.\n");
        return -1;
    }

    if (!(source = pa_namereg_get(c, n, PA_NAMEREG_SOURCE))) {
        pa_strbuf_puts(buf, "No source found by this name or index.\n");
        return -1;
    }

    pa_log_debug("%s of source %s requested via CLI.", suspend ? "Suspending" : "Resuming", source->name);

    if ((r = pa_source_suspend(source, suspend, PA_SUSPEND_USER)) < 0)
        pa_strbuf_printf(buf, "Failed to resume/suspend source: %s\n", pa_strerror(r));

    return 0;
}

static int pa_cli_command_suspend(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *m;
    int suspend, r;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(m = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a suspend switch setting (0/1).\n");
        return -1;
    }

    if ((suspend = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse suspend switch.\n");
        return -1;
    }

    pa_log_debug("%s of all sinks and sources requested via CLI.", suspend ? "Suspending" : "Resuming");

    if ((r = pa_sink_suspend_all(c, suspend, PA_SUSPEND_USER)) < 0)
        pa_strbuf_printf(buf, "Failed to resume/suspend all sinks: %s\n", pa_strerror(r));

    if ((r = pa_source_suspend_all(c, suspend, PA_SUSPEND_USER)) < 0)
        pa_strbuf_printf(buf, "Failed to resume/suspend all sources: %s\n", pa_strerror(r));

    return 0;
}

static int pa_cli_command_log_target(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *m;
    pa_log_target *log_target = NULL;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(m = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a log target (null|auto|syslog|stderr|file:PATH|newfile:PATH).\n");
        return -1;
    }

    /* 'auto' is actually the effect with 'stderr' */
    if (pa_streq(m, "auto"))
        log_target = pa_log_target_new(PA_LOG_STDERR, NULL);
    else {
        log_target = pa_log_parse_target(m);

        if (!log_target) {
            pa_strbuf_puts(buf, "Invalid log target.\n");
            return -1;
        }
    }

    if (pa_log_set_target(log_target) < 0) {
        pa_strbuf_puts(buf, "Failed to set log target.\n");
        pa_log_target_free(log_target);
        return -1;
    }

    pa_log_target_free(log_target);

    return 0;
}

static int pa_cli_command_log_level(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *m;
    uint32_t level;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(m = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a log level (0..4).\n");
        return -1;
    }

    if (pa_atou(m, &level) < 0 || level >= PA_LOG_LEVEL_MAX) {
        pa_strbuf_puts(buf, "Failed to parse log level.\n");
        return -1;
    }

    pa_log_set_level(level);

    return 0;
}

static int pa_cli_command_log_meta(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *m;
    int b;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(m = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a boolean.\n");
        return -1;
    }

    if ((b = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse log meta switch.\n");
        return -1;
    }

    pa_log_set_flags(PA_LOG_PRINT_META, b ? PA_LOG_SET : PA_LOG_UNSET);

    return 0;
}

static int pa_cli_command_log_time(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *m;
    int b;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(m = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a boolean.\n");
        return -1;
    }

    if ((b = pa_parse_boolean(m)) < 0) {
        pa_strbuf_puts(buf, "Failed to parse log meta switch.\n");
        return -1;
    }

    pa_log_set_flags(PA_LOG_PRINT_TIME, b ? PA_LOG_SET : PA_LOG_UNSET);

    return 0;
}

static int pa_cli_command_log_backtrace(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *m;
    uint32_t nframes;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(m = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a backtrace level.\n");
        return -1;
    }

    if (pa_atou(m, &nframes) < 0 || nframes >= 1000) {
        pa_strbuf_puts(buf, "Failed to parse backtrace level.\n");
        return -1;
    }

    pa_log_set_show_backtrace(nframes);

    return 0;
}

static int pa_cli_command_card_profile(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *p;
    pa_card *card;
    pa_card_profile *profile;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a card either by its name or its index.\n");
        return -1;
    }

    if (!(p = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a profile by its name.\n");
        return -1;
    }

    if (!(card = pa_namereg_get(c, n, PA_NAMEREG_CARD))) {
        pa_strbuf_puts(buf, "No card found by this name or index.\n");
        return -1;
    }

    if (!(profile = pa_hashmap_get(card->profiles, p))) {
        pa_strbuf_printf(buf, "No such profile: %s\n", p);
        return -1;
    }

    if (pa_card_set_profile(card, profile, true) < 0) {
        pa_strbuf_printf(buf, "Failed to set card profile to '%s'.\n", p);
        return -1;
    }

    return 0;
}

static int pa_cli_command_sink_port(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *p;
    pa_sink *sink;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if (!(p = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a profile by its name.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    if (pa_sink_set_port(sink, p, true) < 0) {
        pa_strbuf_printf(buf, "Failed to set sink port to '%s'.\n", p);
        return -1;
    }

    return 0;
}

static int pa_cli_command_source_port(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *p;
    pa_source *source;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    if (!(p = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a profile by its name.\n");
        return -1;
    }

    if (!(source = pa_namereg_get(c, n, PA_NAMEREG_SOURCE))) {
        pa_strbuf_puts(buf, "No source found by this name or index.\n");
        return -1;
    }

    if (pa_source_set_port(source, p, true) < 0) {
        pa_strbuf_printf(buf, "Failed to set source port to '%s'.\n", p);
        return -1;
    }

    return 0;
}

static int pa_cli_command_port_offset(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *n, *p, *l;
    pa_device_port *port;
    pa_card *card;
    int32_t offset;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a card either by its name or its index.\n");
        return -1;
    }

    if (!(p = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a port by its name.\n");
        return -1;
    }

    if (!(l = pa_tokenizer_get(t, 3))) {
        pa_strbuf_puts(buf, "You need to specify a latency offset.\n");
        return -1;
    }

    if (pa_atoi(l, &offset) < 0) {
        pa_strbuf_puts(buf, "Failed to parse the latency offset.\n");
        return -1;
    }

    if (!(card = pa_namereg_get(c, n, PA_NAMEREG_CARD))) {
        pa_strbuf_puts(buf, "No card found by this name or index.\n");
        return -1;
    }

    if (!(port = pa_hashmap_get(card->ports, p))) {
        pa_strbuf_puts(buf, "No port found by this name.\n");
        return -1;
    }

    pa_device_port_set_latency_offset(port, offset);

    return 0;
}

static int pa_cli_command_send_message_to_object(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    const char *object_path, *message, *message_parameters;
    char *response = NULL;
    int ret;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);


    if (!(object_path = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify an object path as recipient for the message.\n");
           return -1;
    }

    if (!(message = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a message name.\n");
        return -1;
    }

    /* parameters may be NULL */
    message_parameters = pa_tokenizer_get(t, 3);

    ret = pa_message_handler_send_message(c, object_path, message, message_parameters, &response);

    if (ret < 0) {
        pa_strbuf_printf(buf, "Send message failed: %s\n", pa_strerror(ret));
        ret = -1;

    } else {
        if (response)
            pa_strbuf_puts(buf, response);
        pa_strbuf_puts(buf, "\n");
        ret = 0;
    }

    pa_xfree(response);
    return ret;
}

static int pa_cli_command_dump(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_module *m;
    pa_sink *sink;
    pa_source *source;
    pa_card *card;
    bool nl;
    uint32_t idx;
    time_t now;
#ifdef HAVE_CTIME_R
    char txt[256];
#endif

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    time(&now);

#ifdef HAVE_CTIME_R
    pa_strbuf_printf(buf, "### Configuration dump generated at %s\n", ctime_r(&now, txt));
#else
    pa_strbuf_printf(buf, "### Configuration dump generated at %s\n", ctime(&now));
#endif

    PA_IDXSET_FOREACH(m, c->modules, idx) {

        pa_strbuf_printf(buf, "load-module %s", m->name);

        if (m->argument)
            pa_strbuf_printf(buf, " %s", m->argument);

        pa_strbuf_puts(buf, "\n");
    }

    nl = false;
    PA_IDXSET_FOREACH(sink, c->sinks, idx) {

        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = true;
        }

        pa_strbuf_printf(buf, "set-sink-volume %s 0x%03x\n", sink->name, pa_cvolume_max(pa_sink_get_volume(sink, false)));
        pa_strbuf_printf(buf, "set-sink-mute %s %s\n", sink->name, pa_yes_no(pa_sink_get_mute(sink, false)));
        pa_strbuf_printf(buf, "suspend-sink %s %s\n", sink->name, pa_yes_no(sink->state == PA_SINK_SUSPENDED));
    }

    nl = false;
    PA_IDXSET_FOREACH(source, c->sources, idx) {

        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = true;
        }

        pa_strbuf_printf(buf, "set-source-volume %s 0x%03x\n", source->name, pa_cvolume_max(pa_source_get_volume(source, false)));
        pa_strbuf_printf(buf, "set-source-mute %s %s\n", source->name, pa_yes_no(pa_source_get_mute(source, false)));
        pa_strbuf_printf(buf, "suspend-source %s %s\n", source->name, pa_yes_no(source->state == PA_SOURCE_SUSPENDED));
    }

    nl = false;
    PA_IDXSET_FOREACH(card, c->cards, idx) {

        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = true;
        }

        pa_strbuf_printf(buf, "set-card-profile %s %s\n", card->name, card->active_profile->name);
    }

    nl = false;
    if (c->default_sink) {
        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = true;
        }

        pa_strbuf_printf(buf, "set-default-sink %s\n", c->default_sink->name);
    }

    if (c->default_source) {
        if (!nl)
            pa_strbuf_puts(buf, "\n");

        pa_strbuf_printf(buf, "set-default-source %s\n", c->default_source->name);
    }

    pa_strbuf_puts(buf, "\n### EOF\n");

    return 0;
}

static int pa_cli_command_dump_volumes(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, bool *fail) {
    pa_sink *s;
    pa_source *so;
    pa_sink_input *i;
    pa_source_output *o;
    uint32_t s_idx, i_idx;
    char v_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
    pa_channel_map *map;

    pa_core_assert_ref(c);
    pa_assert(t);
    pa_assert(buf);
    pa_assert(fail);

    PA_IDXSET_FOREACH(s, c->sinks, s_idx) {
        map = &s->channel_map;
        pa_strbuf_printf(buf, "Sink %d: ", s_idx);
        pa_strbuf_printf(buf,
                         "reference = %s, ",
                         pa_cvolume_snprint_verbose(v_str,
                                                    sizeof(v_str),
                                                    &s->reference_volume,
                                                    map,
                                                    s->flags & PA_SINK_DECIBEL_VOLUME));
        pa_strbuf_printf(buf,
                         "real = %s, ",
                         pa_cvolume_snprint_verbose(v_str,
                                                    sizeof(v_str),
                                                    &s->real_volume,
                                                    &s->channel_map,
                                                    s->flags & PA_SINK_DECIBEL_VOLUME));
        pa_strbuf_printf(buf, "soft = %s, ", pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &s->soft_volume, map, true));
        pa_strbuf_printf(buf,
                         "current_hw = %s, ",
                         pa_cvolume_snprint_verbose(v_str,
                                                    sizeof(v_str),
                                                    &s->thread_info.current_hw_volume,
                                                    map,
                                                    s->flags & PA_SINK_DECIBEL_VOLUME));
        pa_strbuf_printf(buf, "save = %s\n", pa_yes_no(s->save_volume));

        PA_IDXSET_FOREACH(i, s->inputs, i_idx) {
            map = &i->channel_map;
            pa_strbuf_printf(buf, "\tInput %d: ", i_idx);
            pa_strbuf_printf(buf, "volume = %s, ", pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &i->volume, map, true));
            pa_strbuf_printf(buf,
                             "reference_ratio = %s, ",
                             pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &i->reference_ratio, map, true));
            pa_strbuf_printf(buf,
                             "real_ratio = %s, ",
                             pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &i->real_ratio, map, true));
            pa_strbuf_printf(buf, "soft = %s, ", pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &i->soft_volume, map, true));
            pa_strbuf_printf(buf,
                             "volume_factor = %s, ",
                             pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &i->volume_factor, map, true));
            pa_strbuf_printf(buf,
                             "volume_factor_sink = %s, ",
                             pa_cvolume_snprint_verbose(v_str,
                                                        sizeof(v_str),
                                                        &i->volume_factor_sink,
                                                        &i->sink->channel_map,
                                                        true));
            pa_strbuf_printf(buf, "save = %s\n", pa_yes_no(i->save_volume));
        }
    }

    PA_IDXSET_FOREACH(so, c->sources, s_idx) {
        map = &so->channel_map;
        pa_strbuf_printf(buf, "Source %d: ", s_idx);
        pa_strbuf_printf(buf,
                         "reference = %s, ",
                         pa_cvolume_snprint_verbose(v_str,
                                                    sizeof(v_str),
                                                    &so->reference_volume,
                                                    map,
                                                    so->flags & PA_SOURCE_DECIBEL_VOLUME));
        pa_strbuf_printf(buf,
                         "real = %s, ",
                         pa_cvolume_snprint_verbose(v_str,
                                                    sizeof(v_str),
                                                    &so->real_volume,
                                                    map,
                                                    so->flags & PA_SOURCE_DECIBEL_VOLUME));
        pa_strbuf_printf(buf, "soft = %s, ", pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &so->soft_volume, map, true));
        pa_strbuf_printf(buf,
                         "current_hw = %s, ",
                         pa_cvolume_snprint_verbose(v_str,
                                                    sizeof(v_str),
                                                    &so->thread_info.current_hw_volume,
                                                    map,
                                                    so->flags & PA_SOURCE_DECIBEL_VOLUME));
        pa_strbuf_printf(buf, "save = %s\n", pa_yes_no(so->save_volume));

        PA_IDXSET_FOREACH(o, so->outputs, i_idx) {
            map = &o->channel_map;
            pa_strbuf_printf(buf, "\tOutput %d: ", i_idx);
            pa_strbuf_printf(buf, "volume = %s, ", pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &o->volume, map, true));
            pa_strbuf_printf(buf,
                             "reference_ratio = %s, ",
                             pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &o->reference_ratio, map, true));
            pa_strbuf_printf(buf,
                             "real_ratio = %s, ",
                             pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &o->real_ratio, map, true));
            pa_strbuf_printf(buf, "soft = %s, ", pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &o->soft_volume, map, true));
            pa_strbuf_printf(buf,
                             "volume_factor = %s, ",
                             pa_cvolume_snprint_verbose(v_str, sizeof(v_str), &o->volume_factor, map, true));
            pa_strbuf_printf(buf,
                             "volume_factor_source = %s, ",
                             pa_cvolume_snprint_verbose(v_str,
                                                        sizeof(v_str),
                                                        &o->volume_factor_source,
                                                        &o->source->channel_map,
                                                        true));
            pa_strbuf_printf(buf, "save = %s\n", pa_yes_no(o->save_volume));
        }
    }

    return 0;
}

int pa_cli_command_execute_line_stateful(pa_core *c, const char *s, pa_strbuf *buf, bool *fail, int *ifstate) {
    const char *cs;

    pa_assert(c);
    pa_assert(s);
    pa_assert(buf);

    cs = s+strspn(s, whitespace);

    if (*cs == '#' || !*cs)
        return 0;
    else if (*cs == '.') {
        if (!strcmp(cs, META_ELSE)) {
            if (!ifstate || *ifstate == IFSTATE_NONE) {
                pa_strbuf_printf(buf, "Meta command %s is not valid in this context\n", cs);
                return -1;
            } else if (*ifstate == IFSTATE_TRUE)
                *ifstate = IFSTATE_FALSE;
            else
                *ifstate = IFSTATE_TRUE;
            return 0;
        } else if (!strcmp(cs, META_ENDIF)) {
            if (!ifstate || *ifstate == IFSTATE_NONE) {
                pa_strbuf_printf(buf, "Meta command %s is not valid in this context\n", cs);
                return -1;
            } else
                *ifstate = IFSTATE_NONE;
            return 0;
        }
        if (ifstate && *ifstate == IFSTATE_FALSE)
            return 0;
        if (!strcmp(cs, META_FAIL))
            *fail = true;
        else if (!strcmp(cs, META_NOFAIL))
            *fail = false;
        else {
            size_t l;
            l = strcspn(cs, whitespace);

            if (l == sizeof(META_INCLUDE)-1 && !strncmp(cs, META_INCLUDE, l)) {
                struct stat st;
                const char *fn = cs+l+strspn(cs+l, whitespace);

                char *filename;
#ifdef OS_IS_WIN32
                if (strncmp(fn, PA_DEFAULT_CONFIG_DIR, strlen(PA_DEFAULT_CONFIG_DIR)) == 0)
                    filename = pa_sprintf_malloc("%s" PA_PATH_SEP "etc" PA_PATH_SEP "pulse" PA_PATH_SEP "%s",
                                            pa_win32_get_toplevel(NULL),
                                            fn + strlen(PA_DEFAULT_CONFIG_DIR));
                else
#endif
                filename = pa_xstrdup(fn);

                if (stat(filename, &st) < 0) {
                    pa_log_warn("stat('%s'): %s", filename, pa_cstrerror(errno));
                    if (*fail) {
                        pa_xfree(filename);
                        return -1;
                    }
                } else {
                    if (S_ISDIR(st.st_mode)) {
                        DIR *d;

                        if (!(d = opendir(filename))) {
                            pa_log_warn("Failed to read '%s': %s", filename, pa_cstrerror(errno));
                            if (*fail) {
                                pa_xfree(filename);
                                return -1;
                            }
                        } else {
                            unsigned i, count;
                            char **sorted_files;
                            struct dirent *de;
                            bool failed = false;
                            pa_dynarray *files = pa_dynarray_new(NULL);

                            while ((de = readdir(d))) {
                                char *extn;
                                size_t flen = strlen(de->d_name);

                                if (flen < 4)
                                    continue;

                                extn = &de->d_name[flen-3];
                                if (strncmp(extn, ".pa", 3) == 0)
                                    pa_dynarray_append(files, pa_sprintf_malloc("%s" PA_PATH_SEP "%s", filename, de->d_name));
                            }

                            closedir(d);
                            if ((count = pa_dynarray_size(files))) {
                                sorted_files = pa_xnew(char*, count);
                                for (i = 0; i < count; ++i)
                                    sorted_files[i] = pa_dynarray_get(files, i);
                                pa_dynarray_free(files);

                                for (i = 0; i < count; ++i) {
                                    for (unsigned j = 0; j < count; ++j) {
                                        if (strcmp(sorted_files[i], sorted_files[j]) < 0) {
                                            char *tmp = sorted_files[i];
                                            sorted_files[i] = sorted_files[j];
                                            sorted_files[j] = tmp;
                                        }
                                    }
                                }

                                for (i = 0; i < count; ++i) {
                                    if (!failed) {
                                        if (pa_cli_command_execute_file(c, sorted_files[i], buf, fail) < 0 && *fail)
                                            failed = true;
                                    }

                                    pa_xfree(sorted_files[i]);
                                }
                                pa_xfree(sorted_files);
                                if (failed) {
                                    pa_xfree(filename);
                                    return -1;
                                }
                            }
                        }
                    } else if (pa_cli_command_execute_file(c, filename, buf, fail) < 0 && *fail) {
                        pa_xfree(filename);
                        return -1;
                    }
                }
                pa_xfree(filename);
            } else if (l == sizeof(META_IFEXISTS)-1 && !strncmp(cs, META_IFEXISTS, l)) {
                if (!ifstate) {
                    pa_strbuf_printf(buf, "Meta command %s is not valid in this context\n", cs);
                    return -1;
                } else if (*ifstate != IFSTATE_NONE) {
                    pa_strbuf_printf(buf, "Nested %s commands not supported\n", cs);
                    return -1;
                } else {
                    const char *filename = cs+l+strspn(cs+l, whitespace);
                    *ifstate = pa_module_exists(filename) ? IFSTATE_TRUE : IFSTATE_FALSE;
                }
            } else {
                pa_strbuf_printf(buf, "Invalid meta command: %s\n", cs);
                if (*fail) return -1;
            }
        }
    } else {
        const struct command*command;
        int unknown = 1;
        size_t l;

        if (ifstate && *ifstate == IFSTATE_FALSE)
            return 0;

        l = strcspn(cs, whitespace);

        for (command = commands; command->name; command++)
            if (strlen(command->name) == l && !strncmp(cs, command->name, l)) {
                int ret;
                pa_tokenizer *t = pa_tokenizer_new(cs, command->args);
                pa_assert(t);
                ret = command->proc(c, t, buf, fail);
                pa_tokenizer_free(t);
                unknown = 0;

                if (ret < 0 && *fail)
                    return -1;

                break;
            }

        if (unknown) {
            pa_strbuf_printf(buf, "Unknown command: %s\n", cs);
            if (*fail)
                return -1;
        }
    }

    return 0;
}

int pa_cli_command_execute_line(pa_core *c, const char *s, pa_strbuf *buf, bool *fail) {
    return pa_cli_command_execute_line_stateful(c, s, buf, fail, NULL);
}

int pa_cli_command_execute_file_stream(pa_core *c, FILE *f, pa_strbuf *buf, bool *fail) {
    char line[2048];
    int ifstate = IFSTATE_NONE;
    int ret = -1;
    bool _fail = true;

    pa_assert(c);
    pa_assert(f);
    pa_assert(buf);

    if (!fail)
        fail = &_fail;

    while (fgets(line, sizeof(line), f)) {
        pa_strip_nl(line);

        if (pa_cli_command_execute_line_stateful(c, line, buf, fail, &ifstate) < 0 && *fail)
            goto fail;
    }

    ret = 0;

fail:

    return ret;
}

int pa_cli_command_execute_file(pa_core *c, const char *fn, pa_strbuf *buf, bool *fail) {
    FILE *f = NULL;
    int ret = -1;
    bool _fail = true;

    pa_assert(c);
    pa_assert(fn);
    pa_assert(buf);

    if (!fail)
        fail = &_fail;

    if (!(f = pa_fopen_cloexec(fn, "r"))) {
        pa_strbuf_printf(buf, "open('%s') failed: %s\n", fn, pa_cstrerror(errno));
        if (!*fail)
            ret = 0;
        goto fail;
    }

    pa_log_debug("Parsing script '%s'", fn);
    ret = pa_cli_command_execute_file_stream(c, f, buf, fail);

fail:
    if (f)
        fclose(f);

    return ret;
}

int pa_cli_command_execute(pa_core *c, const char *s, pa_strbuf *buf, bool *fail) {
    const char *p;
    int ifstate = IFSTATE_NONE;
    bool _fail = true;

    pa_assert(c);
    pa_assert(s);
    pa_assert(buf);

    if (!fail)
        fail = &_fail;

    p = s;
    while (*p) {
        size_t l = strcspn(p, linebreak);
        char *line = pa_xstrndup(p, l);

        if (pa_cli_command_execute_line_stateful(c, line, buf, fail, &ifstate) < 0 && *fail) {
            pa_xfree(line);
            return -1;
        }
        pa_xfree(line);

        p += l;
        p += strspn(p, linebreak);
    }

    return 0;
}