Blob
Date:
Thu Feb 17 15:41:02 2022
UTC
Message:
add `jump' subcommand to play the first matching
/** Copyright (c) 2022 Omar Polo <op@openbsd.org>** Permission to use, copy, modify, and distribute this software for any* purpose with or without fee is hereby granted, provided that the above* copyright notice and this permission notice appear in all copies.** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.*/#include <sys/types.h>#include <sys/socket.h>#include <sys/queue.h>#include <sys/uio.h>#include <sys/un.h>#include <errno.h>#include <event.h>#include <limits.h>#include <sndio.h>#include <stdio.h>#include <stdlib.h>#include <stdint.h>#include <string.h>#include <syslog.h>#include <unistd.h>#include <imsg.h>#include "amused.h"#include "log.h"#include "playlist.h"#include "xmalloc.h"static struct imsgbuf *ibuf;int ctl_noarg(struct parse_result *, int, char **);int ctl_add(struct parse_result *, int, char **);int ctl_show(struct parse_result *, int, char **);int ctl_load(struct parse_result *, int, char **);int ctl_jump(struct parse_result *, int, char **);struct ctl_command ctl_commands[] = {{ "play", PLAY, ctl_noarg, "" },{ "pause", PAUSE, ctl_noarg, "" },{ "toggle", TOGGLE, ctl_noarg, "" },{ "stop", STOP, ctl_noarg, "" },{ "restart", RESTART, ctl_noarg, "" },{ "add", ADD, ctl_add, "files...", 1 },{ "flush", FLUSH, ctl_noarg, "" },{ "show", SHOW, ctl_show, "" },{ "status", STATUS, ctl_noarg, "" },{ "next", NEXT, ctl_noarg, "" },{ "prev", PREV, ctl_noarg, "" },{ "load", LOAD, ctl_load, "[file]", 1 },{ "jump", JUMP, ctl_jump, "pattern" },{ NULL },};__dead voidusage(void){fprintf(stderr, "usage: %s [-dv] [-s socket]\n", getprogname());fprintf(stderr, "%s version %s\n", getprogname(), AMUSED_VERSION);exit(1);}static __dead voidctl_usage(struct ctl_command *ctl){fprintf(stderr, "usage: %s [-v] [-s socket] %s %s\n", getprogname(),ctl->name, ctl->usage);exit(1);}static intparse(int argc, char **argv){struct ctl_command *ctl = NULL;struct parse_result res;int i, status;memset(&res, 0, sizeof(res));for (i = 0; ctl_commands[i].name != NULL; ++i) {if (strncmp(ctl_commands[i].name, argv[0], strlen(argv[0]))== 0) {if (ctl != NULL) {fprintf(stderr,"ambiguous argument: %s\n", argv[0]);usage();}ctl = &ctl_commands[i];}}if (ctl == NULL) {fprintf(stderr, "unknown argument: %s\n", argv[0]);usage();}res.action = ctl->action;res.ctl = ctl;if (!ctl->has_pledge) {/* pledge(2) default if command doesn't have its own */if (pledge("stdio", NULL) == -1)fatal("pledge");}status = ctl->main(&res, argc, argv);close(ibuf->fd);free(ibuf);return status;}static intenqueue_tracks(char **files){char res[PATH_MAX];int enq = 0;for (; *files != NULL; ++files) {memset(&res, 0, sizeof(res));if (realpath(*files, res) == NULL) {log_warn("realpath %s", *files);continue;}imsg_compose(ibuf, IMSG_CTL_ADD, 0, 0, -1,res, sizeof(res));enq++;}return enq == 0;}static intjump_req(const char *arg){char path[PATH_MAX];memset(path, 0, sizeof(path));strlcpy(path, arg, sizeof(path));imsg_compose(ibuf, IMSG_CTL_JUMP, 0, 0, -1, path, sizeof(path));return 0;}static voidprint_error_message(const char *prfx, struct imsg *imsg){size_t datalen;char *msg;datalen = IMSG_DATA_SIZE(*imsg);if ((msg = calloc(1, datalen)) == NULL)fatal("calloc %zu", datalen);memcpy(msg, imsg->data, datalen);if (datalen == 0 || msg[datalen-1] != '\0')fatalx("malformed error message");log_warnx("%s: %s", prfx, msg);free(msg);}static intshow_add(struct imsg *imsg, int *ret, char ***files){if (**files == NULL) {log_warnx("received more replies than file sent");*ret = 1;return 1;}if (imsg->hdr.type == IMSG_CTL_ERR)print_error_message(**files, imsg);else if (imsg->hdr.type == IMSG_CTL_ADD)log_debug("enqueued %s", **files);elsefatalx("got invalid message %d", imsg->hdr.type);(*files)++;return (**files) == NULL;}static intshow_complete(struct parse_result *res, struct imsg *imsg, int *ret){struct player_status s;size_t datalen;if (imsg->hdr.type == IMSG_CTL_ERR) {print_error_message("show failed", imsg);*ret = 1;return 1;}datalen = IMSG_DATA_SIZE(*imsg);if (datalen == 0)return 1;if (datalen != sizeof(s))fatalx("%s: data size mismatch", __func__);memcpy(&s, imsg->data, sizeof(s));if (s.path[sizeof(s.path)-1] != '\0')fatalx("%s: data corrupted?", __func__);if (res->pretty)printf("%c ", s.status == STATE_PLAYING ? '>' : ' ');printf("%s\n", s.path);return 0;}static intshow_status(struct imsg *imsg, int *ret){struct player_status s;size_t datalen;if (imsg->hdr.type == IMSG_CTL_ERR) {print_error_message("show failed", imsg);*ret = 1;return 1;}if (imsg->hdr.type != IMSG_CTL_STATUS)fatalx("%s: got wrong reply", __func__);datalen = IMSG_DATA_SIZE(*imsg);if (datalen != sizeof(s))fatalx("%s: data size mismatch", __func__);memcpy(&s, imsg->data, sizeof(s));if (s.path[sizeof(s.path)-1] != '\0')fatalx("%s: data corrupted?", __func__);switch (s.status) {case STATE_STOPPED:printf("stopped ");break;case STATE_PLAYING:printf("playing ");break;case STATE_PAUSED:printf("paused ");break;default:printf("unknown ");break;}printf("%s\n", s.path);return 1;}static intshow_load(struct parse_result *res, struct imsg *imsg, int *ret){FILE *f;const char *file;char *line = NULL;char path[PATH_MAX];size_t linesize = 0;ssize_t linelen;int any = 0;if (imsg->hdr.type == IMSG_CTL_ERR) {print_error_message("load failed", imsg);*ret = 1;return 1;}if (imsg->hdr.type == IMSG_CTL_ADD)return 0;if (imsg->hdr.type == IMSG_CTL_COMMIT)return 1;if (imsg->hdr.type != IMSG_CTL_BEGIN)fatalx("got unexpected message %d", imsg->hdr.type);if (res->file == NULL)f = stdin;else if ((f = fopen(res->file, "r")) == NULL) {log_warn("can't open %s", res->file);*ret = 1;return 1;}while ((linelen = getline(&line, &linesize, f)) != -1) {if (linelen == 0)continue;line[linelen-1] = '\0';file = line;if (file[0] == '>' && file[1] == ' ')file += 2;if (file[0] == ' ' && file[1] == ' ')file += 2;memset(&path, 0, sizeof(path));if (realpath(file, path) == NULL) {log_warn("realpath %s", file);continue;}any++;imsg_compose(ibuf, IMSG_CTL_ADD, 0, 0, -1,path, sizeof(path));}free(line);if (ferror(f))fatal("getline");fclose(f);if (!any) {*ret = 1;return 1;}imsg_compose(ibuf, IMSG_CTL_COMMIT, 0, 0, -1,NULL, 0);imsg_flush(ibuf);return 0;}static intctlaction(struct parse_result *res){struct imsg imsg;ssize_t n;int ret = 0, done = 1;char **files;switch (res->action) {case PLAY:done = 0;imsg_compose(ibuf, IMSG_CTL_PLAY, 0, 0, -1, NULL, 0);imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);break;case PAUSE:imsg_compose(ibuf, IMSG_CTL_PAUSE, 0, 0, -1, NULL, 0);break;case TOGGLE:done = 0;imsg_compose(ibuf, IMSG_CTL_TOGGLE_PLAY, 0, 0, -1, NULL, 0);imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);break;case STOP:imsg_compose(ibuf, IMSG_CTL_STOP, 0, 0, -1, NULL, 0);break;case RESTART:done = 0;imsg_compose(ibuf, IMSG_CTL_RESTART, 0, 0, -1, NULL, 0);imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);break;case ADD:done = 0;files = res->files;ret = enqueue_tracks(res->files);break;case FLUSH:imsg_compose(ibuf, IMSG_CTL_FLUSH, 0, 0, -1, NULL, 0);break;case SHOW:done = 0;imsg_compose(ibuf, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);break;case STATUS:done = 0;imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);break;case NEXT:done = 0;imsg_compose(ibuf, IMSG_CTL_NEXT, 0, 0, -1, NULL, 0);imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);break;case PREV:done = 0;imsg_compose(ibuf, IMSG_CTL_PREV, 0, 0, -1, NULL, 0);imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);break;case LOAD:done = 0;imsg_compose(ibuf, IMSG_CTL_BEGIN, 0, 0, -1, NULL, 0);break;case JUMP:done = 0;ret = jump_req(res->file);break;case NONE:/* action not expected */fatalx("invalid action %u", res->action);break;}if (ret != 0)goto end;imsg_flush(ibuf);while (!done) {if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)fatalx("imsg_read error");if (n == 0)fatalx("pipe closed");while (!done) {if ((n = imsg_get(ibuf, &imsg)) == -1)fatalx("imsg_get error");if (n == 0)break;switch (res->action) {case ADD:done = show_add(&imsg, &ret, &files);break;case SHOW:done = show_complete(res, &imsg, &ret);break;case PLAY:case TOGGLE:case RESTART:case STATUS:case NEXT:case PREV:case JUMP:done = show_status(&imsg, &ret);break;case LOAD:done = show_load(res, &imsg, &ret);break;default:done = 1;break;}imsg_free(&imsg);}}end:return ret;}intctl_noarg(struct parse_result *res, int argc, char **argv){if (argc != 1)ctl_usage(res->ctl);return ctlaction(res);}intctl_add(struct parse_result *res, int argc, char **argv){if (argc < 2)ctl_usage(res->ctl);res->files = argv+1;if (pledge("stdio rpath", NULL) == -1)fatal("pledge");return ctlaction(res);}intctl_show(struct parse_result *res, int argc, char **argv){int ch;while ((ch = getopt(argc, argv, "p")) != -1) {switch (ch) {case 'p':res->pretty = 1;break;default:ctl_usage(res->ctl);}}return ctlaction(res);}intctl_load(struct parse_result *res, int argc, char **argv){if (argc < 2)res->file = NULL;else if (argc == 2)res->file = argv[1];elsectl_usage(res->ctl);if (pledge("stdio rpath", NULL) == -1)fatal("pledge");return ctlaction(res);}intctl_jump(struct parse_result *res, int argc, char **argv){int ch;while ((ch = getopt(argc, argv, "")) != -1)ctl_usage(res->ctl);argc -= optind;argv += optind;if (argc != 1)ctl_usage(res->ctl);res->file = argv[0];return ctlaction(res);}static intsockconn(void){struct sockaddr_un sun;int sock, saved_errno;if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)fatal("socket");memset(&sun, 0, sizeof(sun));sun.sun_family = AF_UNIX;strlcpy(sun.sun_path, csock, sizeof(sun.sun_path));if (connect(sock, (struct sockaddr *)&sun, sizeof(sun)) == -1) {saved_errno = errno;close(sock);errno = saved_errno;return -1;}return sock;}__dead voidctl(int argc, char **argv){int ctl_sock, i = 0;log_init(1, LOG_DAEMON);log_setverbose(verbose);do {struct timespec ts = { 0, 50000000 }; /* 0.05 seconds */if ((ctl_sock = sockconn()) != -1)break;if (errno != ENOENT && errno != ECONNREFUSED)fatal("connect %s", csock);if (i == 0)spawn_daemon();nanosleep(&ts, NULL);} while (++i < 20);if (ctl_sock == -1)fatalx("failed to connect to the daemon");ibuf = xmalloc(sizeof(*ibuf));imsg_init(ibuf, ctl_sock);optreset = 1;optind = 1;exit(parse(argc, argv));}
Omar Polo