src/plugin_xmms/http.c

   1 /*  XMMS - Cross-platform multimedia player
   2  *  Copyright (C) 1998-2000  Peter Alm, Mikael Alm, Olle Hallnas, Thomas Nilsson and 4Front Technologies
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License along
  15  *  with this program; if not, write to the Free Software Foundation, Inc.,
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  */
  18 /* modified for FLAC support by Steven Richman (2003) */
  19
  20 #include "plugin.h"
  21
  22 #include <sys/types.h>
  23 #include <sys/socket.h>
  24 #include <sys/time.h>
  25 #include <netinet/in.h>
  26 #include <arpa/inet.h>
  27 #include <netdb.h>
  28 #include <glib.h>
  29 #include <string.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32 #include <errno.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <inttypes.h>
  36
  37 #include <pthread.h>
  38
  39 #include <xmms/util.h>
  40 #include <xmms/plugin.h>
  41
  42 #include "FLAC/format.h"
  43 #include "configure.h"
  44 #include "locale_hack.h"
  45
  46 /* on FreeBSD we get socklen_t from <sys/socket.h> */
  47 #if (!defined HAVE_SOCKLEN_T) && !defined(__FreeBSD__)
  48 typedef unsigned int socklen_t;
  49 #endif
  50
  51 #define min(x,y) ((x)<(y)?(x):(y))
  52 #define min3(x,y,z) (min(x,y)<(z)?min(x,y):(z))
  53 #define min4(x,y,z,w) (min3(x,y,z)<(w)?min3(x,y,z):(w))
  54
  55 static gchar *icy_name = NULL;
  56 static gint icy_metaint = 0;
  57
  58 extern InputPlugin flac_ip;
  59
  60 #undef DEBUG_UDP
  61
  62 /* Static udp channel functions */
  63 static int udp_establish_listener (gint *sock);
  64 static int udp_check_for_data(gint sock);
  65
  66 static char *flac_http_get_title(char *url);
  67
  68 static gboolean prebuffering, going, eof = FALSE;
  69 static gint sock, rd_index, wr_index, buffer_length, prebuffer_length;
  70 static guint64 buffer_read = 0;
  71 static gchar *buffer;
  72 static guint64 offset;
  73 static pthread_t thread;
  74 static GtkWidget *error_dialog = NULL;
  75
  76 static FILE *output_file = NULL;
  77
  78 #define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
  79
  80 /* Encode the string S of length LENGTH to base64 format and place it
  81    to STORE.  STORE will be 0-terminated, and must point to a writable
  82    buffer of at least 1+BASE64_LENGTH(length) bytes.  */
  83 static void base64_encode (const gchar *s, gchar *store, gint length)
  84 {
  85         /* Conversion table.  */
  86         static gchar tbl[64] = {
  87                 'A','B','C','D','E','F','G','H',
  88                 'I','J','K','L','M','N','O','P',
  89                 'Q','R','S','T','U','V','W','X',
  90                 'Y','Z','a','b','c','d','e','f',
  91                 'g','h','i','j','k','l','m','n',
  92                 'o','p','q','r','s','t','u','v',
  93                 'w','x','y','z','0','1','2','3',
  94                 '4','5','6','7','8','9','+','/'
  95         };
  96         gint i;
  97         guchar *p = (guchar *)store;
  98
  99         /* Transform the 3x8 bits to 4x6 bits, as required by base64.  */
 100         for (i = 0; i < length; i += 3)
 101         {
 102                 *p++ = tbl[s[0] >> 2];
 103                 *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
 104                 *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
 105                 *p++ = tbl[s[2] & 0x3f];
 106                 s += 3;
 107         }
 108         /* Pad the result if necessary...  */
 109         if (i == length + 1)
 110                 *(p - 1) = '=';
 111         else if (i == length + 2)
 112                 *(p - 1) = *(p - 2) = '=';
 113         /* ...and zero-terminate it.  */
 114         *p = '\0';
 115 }
 116
 117 /* Create the authentication header contents for the `Basic' scheme.
 118    This is done by encoding the string `USER:PASS' in base64 and
 119    prepending `HEADER: Basic ' to it.  */
 120 static gchar *basic_authentication_encode (const gchar *user, const gchar *passwd, const gchar *header)
 121 {
 122         gchar *t1, *t2, *res;
 123         gint len1 = strlen (user) + 1 + strlen (passwd);
 124         gint len2 = BASE64_LENGTH (len1);
 125
 126         t1 = g_strdup_printf("%s:%s", user, passwd);
 127         t2 = g_malloc0(len2 + 1);
 128         base64_encode (t1, t2, len1);
 129         res = g_strdup_printf("%s: Basic %s\r\n", header, t2);
 130         g_free(t2);
 131         g_free(t1);
 132
 133         return res;
 134 }
 135
 136 static void parse_url(const gchar * url, gchar ** user, gchar ** pass, gchar ** host, int *port, gchar ** filename)
 137 {
 138         gchar *h, *p, *pt, *f, *temp, *ptr;
 139
 140         temp = g_strdup(url);
 141         ptr = temp;
 142
 143         if (!strncasecmp("http://", ptr, 7))
 144                 ptr += 7;
 145         h = strchr(ptr, '@');
 146         f = strchr(ptr, '/');
 147         if (h != NULL && (!f || h < f))
 148         {
 149                 *h = '\0';
 150                 p = strchr(ptr, ':');
 151                 if (p != NULL && p < h)
 152                 {
 153                         *p = '\0';
 154                         p++;
 155                         *pass = g_strdup(p);
 156                 }
 157                 else
 158                         *pass = NULL;
 159                 *user = g_strdup(ptr);
 160                 h++;
 161                 ptr = h;
 162         }
 163         else
 164         {
 165                 *user = NULL;
 166                 *pass = NULL;
 167                 h = ptr;
 168         }
 169         pt = strchr(ptr, ':');
 170         if (pt != NULL && (f == NULL || pt < f))
 171         {
 172                 *pt = '\0';
 173                 *port = atoi(pt + 1);
 174         }
 175         else
 176         {
 177                 if (f)
 178                         *f = '\0';
 179                 *port = 80;
 180         }
 181         *host = g_strdup(h);
 182
 183         if (f)
 184                 *filename = g_strdup(f + 1);
 185         else
 186                 *filename = NULL;
 187         g_free(temp);
 188 }
 189
 190 void flac_http_close(void)
 191 {
 192         going = FALSE;
 193
 194         pthread_join(thread, NULL);
 195         g_free(icy_name);
 196         icy_name = NULL;
 197 }
 198
 199
 200 static gint http_used(void)
 201 {
 202         if (wr_index >= rd_index)
 203                 return wr_index - rd_index;
 204         return buffer_length - (rd_index - wr_index);
 205 }
 206
 207 static gint http_free(void)
 208 {
 209         if (rd_index > wr_index)
 210                 return (rd_index - wr_index) - 1;
 211         return (buffer_length - (wr_index - rd_index)) - 1;
 212 }
 213
 214 static void http_wait_for_data(gint bytes)
 215 {
 216         while ((prebuffering || http_used() < bytes) && !eof && going)
 217                 xmms_usleep(10000);
 218 }
 219
 220 static void show_error_message(gchar *error)
 221 {
 222         if(!error_dialog)
 223         {
 224                 GDK_THREADS_ENTER();
 225                 error_dialog = xmms_show_message(_("Error"), error, _("Ok"), FALSE,
 226                                                  NULL, NULL);
 227                 gtk_signal_connect(GTK_OBJECT(error_dialog),
 228                                    "destroy",
 229                                    GTK_SIGNAL_FUNC(gtk_widget_destroyed),
 230                                    &error_dialog);
 231                 GDK_THREADS_LEAVE();
 232         }
 233 }
 234
 235 int flac_http_read(gpointer data, gint length)
 236 {
 237         gint len, cnt, off = 0, meta_len, meta_off = 0, i;
 238         gchar *meta_data, **tags, *temp, *title;
 239         if (length > buffer_length) {
 240                 length = buffer_length;
 241         }
 242
 243         http_wait_for_data(length);
 244
 245         if (!going)
 246                 return 0;
 247         len = min(http_used(), length);
 248
 249         while (len && http_used())
 250         {
 251                 if ((flac_cfg.stream.cast_title_streaming) && (icy_metaint > 0) && (buffer_read % icy_metaint) == 0 && (buffer_read > 0))
 252                 {
 253                         meta_len = *((guchar *) buffer + rd_index) * 16;
 254                         rd_index = (rd_index + 1) % buffer_length;
 255                         if (meta_len > 0)
 256                         {
 257                                 http_wait_for_data(meta_len);
 258                                 meta_data = g_malloc0(meta_len);
 259                                 if (http_used() >= meta_len)
 260                                 {
 261                                         while (meta_len)
 262                                         {
 263                                                 cnt = min(meta_len, buffer_length - rd_index);
 264                                                 memcpy(meta_data + meta_off, buffer + rd_index, cnt);
 265                                                 rd_index = (rd_index + cnt) % buffer_length;
 266                                                 meta_len -= cnt;
 267                                                 meta_off += cnt;
 268                                         }
 269                                         tags = g_strsplit(meta_data, "';", 0);
 270
 271                                         for (i = 0; tags[i]; i++)
 272                                         {
 273                                                 if (!strncasecmp(tags[i], "StreamTitle=", 12))
 274                                                 {
 275                                                         temp = g_strdup(tags[i] + 13);
 276                                                         title = g_strdup_printf("%s (%s)", temp, icy_name);
 277                                                         set_track_info(title, -1);
 278                                                         g_free(title);
 279                                                         g_free(temp);
 280                                                 }
 281
 282                                         }
 283                                         g_strfreev(tags);
 284
 285                                 }
 286                                 g_free(meta_data);
 287                         }
 288                         if (!http_used())
 289                                 http_wait_for_data(length - off);
 290                         cnt = min3(len, buffer_length - rd_index, http_used());
 291                 }
 292                 else if ((icy_metaint > 0) && (flac_cfg.stream.cast_title_streaming))
 293                         cnt = min4(len, buffer_length - rd_index, http_used(), icy_metaint - (gint) (buffer_read % icy_metaint));
 294                 else
 295                         cnt = min3(len, buffer_length - rd_index, http_used());
 296                 if (output_file)
 297                         fwrite(buffer + rd_index, 1, cnt, output_file);
 298
 299                 memcpy((gchar *)data + off, buffer + rd_index, cnt);
 300                 rd_index = (rd_index + cnt) % buffer_length;
 301                 buffer_read += cnt;
 302                 len -= cnt;
 303                 off += cnt;
 304         }
 305         if (!off) {
 306                 fprintf(stderr, "returning zero\n");
 307         }
 308         return off;
 309 }
 310
 311 static gboolean http_check_for_data(void)
 312 {
 313
 314         fd_set set;
 315         struct timeval tv;
 316         gint ret;
 317
 318         tv.tv_sec = 0;
 319         tv.tv_usec = 20000;
 320         FD_ZERO(&set);
 321         FD_SET(sock, &set);
 322         ret = select(sock + 1, &set, NULL, NULL, &tv);
 323         if (ret > 0)
 324                 return TRUE;
 325         return FALSE;
 326 }
 327
 328 gint flac_http_read_line(gchar * buf, gint size)
 329 {
 330         gint i = 0;
 331
 332         while (going && i < size - 1)
 333         {
 334                 if (http_check_for_data())
 335                 {
 336                         if (read(sock, buf + i, 1) <= 0)
 337                                 return -1;
 338                         if (buf[i] == '\n')
 339                                 break;
 340                         if (buf[i] != '\r')
 341                                 i++;
 342                 }
 343         }
 344         if (!going)
 345                 return -1;
 346         buf[i] = '\0';
 347         return i;
 348 }
 349
 350 /* returns the file descriptor of the socket, or -1 on error */
 351 static int http_connect (gchar *url_, gboolean head, guint64 offset)
 352 {
 353         gchar line[1024], *user, *pass, *host, *filename,
 354              *status, *url, *temp, *file;
 355         gchar *chost;
 356         gint cnt, error, port, cport;
 357         socklen_t err_len;
 358         gboolean redirect;
 359         int udp_sock = 0;
 360         fd_set set;
 361         struct hostent *hp;
 362         struct sockaddr_in address;
 363         struct timeval tv;
 364
 365         url = g_strdup (url_);
 366
 367         do
 368         {
 369                 redirect=FALSE;
 370
 371                 g_strstrip(url);
 372
 373                 parse_url(url, &user, &pass, &host, &port, &filename);
 374
 375                 if ((!filename || !*filename) && url[strlen(url) - 1] != '/')
 376                         temp = g_strconcat(url, "/", NULL);
 377                 else
 378                         temp = g_strdup(url);
 379                 g_free(url);
 380                 url = temp;
 381
 382                 chost = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_host : host;
 383                 cport = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_port : port;
 384
 385                 sock = socket(AF_INET, SOCK_STREAM, 0);
 386                 fcntl(sock, F_SETFL, O_NONBLOCK);
 387                 address.sin_family = AF_INET;
 388
 389                 status = g_strdup_printf(_("LOOKING UP %s"), chost);
 390                 flac_ip.set_info_text(status);
 391                 g_free(status);
 392
 393                 if (!(hp = gethostbyname(chost)))
 394                 {
 395                         status = g_strdup_printf(_("Couldn't look up host %s"), chost);
 396                         show_error_message(status);
 397                         g_free(status);
 398
 399                         flac_ip.set_info_text(NULL);
 400                         eof = TRUE;
 401                 }
 402
 403                 if (!eof)
 404                 {
 405                         memcpy(&address.sin_addr.s_addr, *(hp->h_addr_list), sizeof (address.sin_addr.s_addr));
 406                         address.sin_port = (gint) g_htons(cport);
 407
 408                         status = g_strdup_printf(_("CONNECTING TO %s:%d"), chost, cport);
 409                         flac_ip.set_info_text(status);
 410                         g_free(status);
 411                         if (connect(sock, (struct sockaddr *) &address, sizeof (struct sockaddr_in)) == -1)
 412                         {
 413                                 if (errno != EINPROGRESS)
 414                                 {
 415                                         status = g_strdup_printf(_("Couldn't connect to host %s"), chost);
 416                                         show_error_message(status);
 417                                         g_free(status);
 418
 419                                         flac_ip.set_info_text(NULL);
 420                                         eof = TRUE;
 421                                 }
 422                         }
 423                         while (going)
 424                         {
 425                                 tv.tv_sec = 0;
 426                                 tv.tv_usec = 10000;
 427                                 FD_ZERO(&set);
 428                                 FD_SET(sock, &set);
 429                                 if (select(sock + 1, NULL, &set, NULL, &tv) > 0)
 430                                 {
 431                                         err_len = sizeof (error);
 432                                         getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &err_len);
 433                                         if (error)
 434                                         {
 435                                                 status = g_strdup_printf(_("Couldn't connect to host %s"),
 436                                                                          chost);
 437                                                 show_error_message(status);
 438                                                 g_free(status);
 439
 440                                                 flac_ip.set_info_text(NULL);
 441                                                 eof = TRUE;
 442
 443                                         }
 444                                         break;
 445                                 }
 446                         }
 447                         if (!eof)
 448                         {
 449                                 gchar *auth = NULL, *proxy_auth = NULL;
 450                                 gchar udpspace[30];
 451                                 int udp_port;
 452
 453                                 if (flac_cfg.stream.use_udp_channel)
 454                                 {
 455                                         udp_port = udp_establish_listener (&udp_sock);
 456                                         if (udp_port > 0)
 457                                                 flac_snprintf (udpspace, sizeof (udpspace), "x-audiocast-udpport: %d\r\n", udp_port);
 458                                         else
 459                                                 udp_sock = 0;
 460                                 }
 461
 462                                 if(user && pass)
 463                                         auth = basic_authentication_encode(user, pass, "Authorization");
 464
 465                                 if (flac_cfg.stream.use_proxy)
 466                                 {
 467                                         file = g_strdup(url);
 468                                         if(flac_cfg.stream.proxy_use_auth && flac_cfg.stream.proxy_user && flac_cfg.stream.proxy_pass)
 469                                         {
 470                                                 proxy_auth = basic_authentication_encode(flac_cfg.stream.proxy_user,
 471                                                                                          flac_cfg.stream.proxy_pass,
 472                                                                                          "Proxy-Authorization");
 473                                         }
 474                                 }
 475                                 else
 476                                         file = g_strconcat("/", filename, NULL);
 477
 478                                 temp = g_strdup_printf("GET %s HTTP/1.0\r\n"
 479                                                        "Host: %s\r\n"
 480                                                        "User-Agent: %s/%s\r\n"
 481                                                        "%s%s%s%s",
 482                                                        file, host, "Reference FLAC Player", FLAC__VERSION_STRING,
 483                                                        proxy_auth ? proxy_auth : "", auth ? auth : "",
 484                                                        flac_cfg.stream.cast_title_streaming ?  "Icy-MetaData:1\r\n" : "",
 485                                                        flac_cfg.stream.use_udp_channel ? udpspace : "");
 486                                 if (offset && !head) {
 487                                         gchar *temp_dead = temp;
 488                                         temp = g_strdup_printf ("%sRange: %" PRIu64 "-\r\n", temp, offset);
 489                                         fputs (temp, stderr);
 490                                         g_free (temp_dead);
 491                                 }
 492
 493                                 g_free(file);
 494                                 if(proxy_auth)
 495                                         g_free(proxy_auth);
 496                                 if(auth)
 497                                         g_free(auth);
 498                                 write(sock, temp, strlen(temp));
 499                                 write(sock, "\r\n", 2);
 500                                 g_free(temp);
 501                                 flac_ip.set_info_text(_("CONNECTED: WAITING FOR REPLY"));
 502                                 while (going && !eof)
 503                                   {
 504                                         if (http_check_for_data())
 505                                         {
 506                                                 if (flac_http_read_line(line, 1024))
 507                                                 {
 508                                                         status = strchr(line, ' ');
 509                                                         if (status)
 510                                                         {
 511                                                                 if (status[1] == '2')
 512                                                                         break;
 513                                                                 else if(status[1] == '3' && status[2] == '0' && status[3] == '2')
 514                                                                 {
 515                                                                         while(going)
 516                                                                         {
 517                                                                                 if(http_check_for_data())
 518                                                                                 {
 519                                                                                         if((cnt = flac_http_read_line(line, 1024)) != -1)
 520                                                                                         {
 521                                                                                                 if(!cnt)
 522                                                                                                         break;
 523                                                                                                 if(!strncmp(line, "Location:", 9))
 524                                                                                                 {
 525                                                                                                         g_free(url);
 526                                                                                                         url = g_strdup(line+10);
 527                                                                                                 }
 528                                                                                         }
 529                                                                                         else
 530                                                                                         {
 531                                                                                                 eof=TRUE;
 532                                                                                                 flac_ip.set_info_text(NULL);
 533                                                                                                 break;
 534                                                                                         }
 535                                                                                 }
 536                                                                         }
 537                                                                         redirect=TRUE;
 538                                                                         break;
 539                                                                 }
 540                                                                 else
 541                                                                 {
 542                                                                         status = g_strdup_printf(_("Couldn't connect to host %s\nServer reported: %s"), chost, status);
 543                                                                         show_error_message(status);
 544                                                                         g_free(status);
 545                                                                         break;
 546                                                                 }
 547                                                         }
 548                                                 }
 549                                                 else
 550                                                 {
 551                                                         eof = TRUE;
 552                                                         flac_ip.set_info_text(NULL);
 553                                                 }
 554                                         }
 555                                 }
 556
 557                                 while (going && !redirect)
 558                                 {
 559                                         if (http_check_for_data())
 560                                         {
 561                                                 if ((cnt = flac_http_read_line(line, 1024)) != -1)
 562                                                 {
 563                                                         if (!cnt)
 564                                                                 break;
 565                                                         if (!strncmp(line, "icy-name:", 9))
 566                                                                 icy_name = g_strdup(line + 9);
 567                                                         else if (!strncmp(line, "x-audiocast-name:", 17))
 568                                                                 icy_name = g_strdup(line + 17);
 569                                                         if (!strncmp(line, "icy-metaint:", 12))
 570                                                                 icy_metaint = atoi(line + 12);
 571                                                         if (!strncmp(line, "x-audiocast-udpport:", 20)) {
 572 #ifdef DEBUG_UDP
 573                                                                 fprintf (stderr, "Server wants udp messages on port %d\n", atoi (line + 20));
 574 #endif
 575                                                                 /*udp_serverport = atoi (line + 20);*/
 576                                                         }
 577
 578                                                 }
 579                                                 else
 580                                                 {
 581                                                         eof = TRUE;
 582                                                         flac_ip.set_info_text(NULL);
 583                                                         break;
 584                                                 }
 585                                         }
 586                                 }
 587                         }
 588                 }
 589
 590                 if(redirect)
 591                 {
 592                         if (output_file)
 593                         {
 594                                 fclose(output_file);
 595                                 output_file = NULL;
 596                         }
 597                         close(sock);
 598                 }
 599
 600                 g_free(user);
 601                 g_free(pass);
 602                 g_free(host);
 603                 g_free(filename);
 604         } while(redirect);
 605
 606         g_free(url);
 607         return eof ? -1 : sock;
 608 }
 609
 610 static void *http_buffer_loop(void *arg)
 611 {
 612         gchar *status, *url, *temp, *file;
 613         gint cnt, written;
 614         int udp_sock = 0;
 615
 616         url = (gchar *) arg;
 617         sock = http_connect (url, false, offset);
 618
 619         if (sock >= 0 && flac_cfg.stream.save_http_stream) {
 620                 gchar *output_name;
 621                 file = flac_http_get_title(url);
 622                 output_name = file;
 623                 if (!strncasecmp(output_name, "http://", 7))
 624                         output_name += 7;
 625                 temp = strrchr(output_name, '.');
 626                 if (temp && (!strcasecmp(temp, ".fla") || !strcasecmp(temp, ".flac")))
 627                         *temp = '\0';
 628
 629                 while ((temp = strchr(output_name, '/')))
 630                         *temp = '_';
 631                 output_name = g_strdup_printf("%s/%s.flac", flac_cfg.stream.save_http_path, output_name);
 632
 633                 g_free(file);
 634
 635                 output_file = fopen(output_name, "wb");
 636                 g_free(output_name);
 637         }
 638
 639         while (going)
 640         {
 641
 642                 if (!http_used() && !flac_ip.output->buffer_playing())
 643                         prebuffering = TRUE;
 644                 if (http_free() > 0 && !eof)
 645                 {
 646                         if (http_check_for_data())
 647                         {
 648                                 cnt = min(http_free(), buffer_length - wr_index);
 649                                 if (cnt > 1024)
 650                                         cnt = 1024;
 651                                 written = read(sock, buffer + wr_index, cnt);
 652                                 if (written <= 0)
 653                                 {
 654                                         eof = TRUE;
 655                                         if (prebuffering)
 656                                         {
 657                                                 prebuffering = FALSE;
 658
 659                                                 flac_ip.set_info_text(NULL);
 660                                         }
 661
 662                                 }
 663                                 else
 664                                         wr_index = (wr_index + written) % buffer_length;
 665                         }
 666
 667                         if (prebuffering)
 668                         {
 669                                 if (http_used() > prebuffer_length)
 670                                 {
 671                                         prebuffering = FALSE;
 672                                         flac_ip.set_info_text(NULL);
 673                                 }
 674                                 else
 675                                 {
 676                                         status = g_strdup_printf(_("PRE-BUFFERING: %dKB/%dKB"), http_used() / 1024, prebuffer_length / 1024);
 677                                         flac_ip.set_info_text(status);
 678                                         g_free(status);
 679                                 }
 680
 681                         }
 682                 }
 683                 else
 684                         xmms_usleep(10000);
 685
 686                 if (flac_cfg.stream.use_udp_channel && udp_sock != 0)
 687                         if (udp_check_for_data(udp_sock) < 0)
 688                         {
 689                                 close(udp_sock);
 690                                 udp_sock = 0;
 691                         }
 692         }
 693         if (output_file)
 694         {
 695                 fclose(output_file);
 696                 output_file = NULL;
 697         }
 698         if (sock >= 0) {
 699                 close(sock);
 700         }
 701         if (udp_sock != 0)
 702                 close(udp_sock);
 703
 704         g_free(buffer);
 705         g_free(url);
 706
 707         pthread_exit(NULL);
 708         return NULL; /* avoid compiler warning */
 709 }
 710
 711 int flac_http_open(const gchar * _url, guint64 _offset)
 712 {
 713         gchar *url;
 714
 715         url = g_strdup(_url);
 716
 717         rd_index = 0;
 718         wr_index = 0;
 719         buffer_length = flac_cfg.stream.http_buffer_size * 1024;
 720         prebuffer_length = (buffer_length * flac_cfg.stream.http_prebuffer) / 100;
 721         buffer_read = 0;
 722         icy_metaint = 0;
 723         prebuffering = TRUE;
 724         going = TRUE;
 725         eof = FALSE;
 726         buffer = g_malloc(buffer_length);
 727         offset = _offset;
 728
 729         pthread_create(&thread, NULL, http_buffer_loop, url);
 730
 731         return 0;
 732 }
 733
 734 char *flac_http_get_title(char *url)
 735 {
 736         if (icy_name)
 737                 return g_strdup(icy_name);
 738         if (g_basename(url) && strlen(g_basename(url)) > 0)
 739                 return g_strdup(g_basename(url));
 740         return g_strdup(url);
 741 }
 742
 743 /* Start UDP Channel specific stuff */
 744
 745 /* Find a good local udp port and bind udp_sock to it, return the port */
 746 static int udp_establish_listener(int *sock)
 747 {
 748         struct sockaddr_in sin;
 749         socklen_t sinlen = sizeof (struct sockaddr_in);
 750
 751 #ifdef DEBUG_UDP
 752         fprintf (stderr,"Establishing udp listener\n");
 753 #endif
 754
 755         if ((*sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
 756         {
 757                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 758                       "udp_establish_listener(): unable to create socket");
 759                 return -1;
 760         }
 761
 762         memset(&sin, 0, sinlen);
 763         sin.sin_family = AF_INET;
 764         sin.sin_addr.s_addr = g_htonl(INADDR_ANY);
 765
 766         if (bind(*sock, (struct sockaddr *)&sin, sinlen) < 0)
 767         {
 768                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 769                       "udp_establish_listener():  Failed to bind socket to localhost: %s", strerror(errno));
 770                 close(*sock);
 771                 return -1;
 772         }
 773         if (fcntl(*sock, F_SETFL, O_NONBLOCK) < 0)
 774         {
 775                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 776                       "udp_establish_listener():  Failed to set flags: %s", strerror(errno));
 777                 close(*sock);
 778                 return -1;
 779         }
 780
 781         memset(&sin, 0, sinlen);
 782         if (getsockname(*sock, (struct sockaddr *)&sin, &sinlen) < 0)
 783         {
 784                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 785                       "udp_establish_listener():  Failed to retrieve socket info: %s", strerror(errno));
 786                 close(*sock);
 787                 return -1;
 788         }
 789
 790 #ifdef DEBUG_UDP
 791         fprintf (stderr,"Listening on local %s:%d\n", inet_ntoa(sin.sin_addr), g_ntohs(sin.sin_port));
 792 #endif
 793
 794         return g_ntohs(sin.sin_port);
 795 }
 796
 797 static int udp_check_for_data(int sock)
 798 {
 799         char buf[1025], **lines;
 800         char *valptr;
 801         gchar *title;
 802         gint len, i;
 803         struct sockaddr_in from;
 804         socklen_t fromlen;
 805
 806         fromlen = sizeof(struct sockaddr_in);
 807
 808         if ((len = recvfrom(sock, buf, 1024, 0, (struct sockaddr *)&from, &fromlen)) < 0)
 809         {
 810                 if (errno != EAGAIN)
 811                 {
 812                         g_log(NULL, G_LOG_LEVEL_CRITICAL,
 813                               "udp_read_data(): Error reading from socket: %s", strerror(errno));
 814                         return -1;
 815                 }
 816                 return 0;
 817         }
 818         buf[len] = '\0';
 819 #ifdef DEBUG_UDP
 820         fprintf (stderr,"Received: [%s]\n", buf);
 821 #endif
 822         lines = g_strsplit(buf, "\n", 0);
 823         if (!lines)
 824                 return 0;
 825
 826         for (i = 0; lines[i]; i++)
 827         {
 828                 while ((lines[i][strlen(lines[i]) - 1] == '\n') ||
 829                        (lines[i][strlen(lines[i]) - 1] == '\r'))
 830                         lines[i][strlen(lines[i]) - 1] = '\0';
 831
 832                 valptr = strchr(lines[i], ':');
 833
 834                 if (!valptr)
 835                         continue;
 836                 else
 837                         valptr++;
 838
 839                 g_strstrip(valptr);
 840                 if (!strlen(valptr))
 841                         continue;
 842
 843                 if (strstr(lines[i], "x-audiocast-streamtitle") != NULL)
 844                 {
 845                         title = g_strdup_printf ("%s (%s)", valptr, icy_name);
 846                         if (going)
 847                                 set_track_info(title, -1);
 848                         g_free (title);
 849                 }
 850
 851 #if 0
 852                 else if (strstr(lines[i], "x-audiocast-streamlength") != NULL)
 853                 {
 854                         if (atoi(valptr) != -1)
 855                                 set_track_info(NULL, atoi(valptr));
 856                 }
 857 #endif
 858
 859                 else if (strstr(lines[i], "x-audiocast-streammsg") != NULL)
 860                 {
 861                         /* set_track_info(title, -1); */
 862 /*                      xmms_show_message(_("Message"), valptr, _("Ok"), */
 863 /*                                        FALSE, NULL, NULL); */
 864                         g_message("Stream_message: %s", valptr);
 865                 }
 866
 867 #if 0
 868                 /* Use this to direct your webbrowser.. yeah right.. */
 869                 else if (strstr(lines[i], "x-audiocast-streamurl") != NULL)
 870                 {
 871                         if (lasturl && g_strcmp (valptr, lasturl))
 872                         {
 873                                 c_message (stderr, "Song URL: %s\n", valptr);
 874                                 g_free (lasturl);
 875                                 lasturl = g_strdup (valptr);
 876                         }
 877                 }
 878 #endif
 879                 else if (strstr(lines[i], "x-audiocast-udpseqnr:") != NULL)
 880                 {
 881                         gchar obuf[60];
 882                         flac_snprintf(obuf, sizeof (obuf), "x-audiocast-ack: %ld \r\n", atol(valptr));
 883                         if (sendto(sock, obuf, strlen(obuf), 0, (struct sockaddr *) &from, fromlen) < 0)
 884                         {
 885                                 g_log(NULL, G_LOG_LEVEL_WARNING,
 886                                       "udp_check_for_data(): Unable to send ack to server: %s", strerror(errno));
 887                         }
 888 #ifdef DEBUG_UDP
 889                         else
 890                                 fprintf(stderr,"Sent ack: %s", obuf);
 891                         fprintf (stderr,"Remote: %s:%d\n", inet_ntoa(from.sin_addr), g_ntohs(from.sin_port));
 892 #endif
 893                 }
 894         }
 895         g_strfreev(lines);
 896         return 0;
 897 }