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
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18 /* modified for FLAC support by Steven Richman (2003) */
  19 #include <sys/types.h>
  20 #include <sys/socket.h>
  21 #include <sys/time.h>
  22 #include <netinet/in.h>
  23 #include <arpa/inet.h>
  24 #include <netdb.h>
  25 #include <glib.h>
  26 #include <string.h>
  27 #include <fcntl.h>
  28 #include <unistd.h>
  29 #include <errno.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32
  33 #include <pthread.h>
  34
  35 #include <xmms/util.h>
  36 #include <xmms/plugin.h>
  37
  38 #ifdef HAVE_CONFIG_H
  39 #include <config.h>
  40 #endif
  41
  42 #include "configure.h"
  43 #include "plugin_common/locale_hack.h"
  44 #include "FLAC/format.h"
  45 #include "plugin.h"
  46
  47 #ifndef HAVE_SOCKLEN_T
  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, err_len, port, cport;
 357         gboolean redirect;
 358         int udp_sock = 0;
 359         fd_set set;
 360         struct hostent *hp;
 361         struct sockaddr_in address;
 362         struct timeval tv;
 363
 364         url = g_strdup (url_);
 365
 366         do
 367         {
 368                 redirect=FALSE;
 369
 370                 g_strstrip(url);
 371
 372                 parse_url(url, &user, &pass, &host, &port, &filename);
 373
 374                 if ((!filename || !*filename) && url[strlen(url) - 1] != '/')
 375                         temp = g_strconcat(url, "/", NULL);
 376                 else
 377                         temp = g_strdup(url);
 378                 g_free(url);
 379                 url = temp;
 380
 381                 chost = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_host : host;
 382                 cport = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_port : port;
 383
 384                 sock = socket(AF_INET, SOCK_STREAM, 0);
 385                 fcntl(sock, F_SETFL, O_NONBLOCK);
 386                 address.sin_family = AF_INET;
 387
 388                 status = g_strdup_printf(_("LOOKING UP %s"), chost);
 389                 flac_ip.set_info_text(status);
 390                 g_free(status);
 391
 392                 if (!(hp = gethostbyname(chost)))
 393                 {
 394                         status = g_strdup_printf(_("Couldn't look up host %s"), chost);
 395                         show_error_message(status);
 396                         g_free(status);
 397
 398                         flac_ip.set_info_text(NULL);
 399                         eof = TRUE;
 400                 }
 401
 402                 if (!eof)
 403                 {
 404                         memcpy(&address.sin_addr.s_addr, *(hp->h_addr_list), sizeof (address.sin_addr.s_addr));
 405                         address.sin_port = (gint) g_htons(cport);
 406
 407                         status = g_strdup_printf(_("CONNECTING TO %s:%d"), chost, cport);
 408                         flac_ip.set_info_text(status);
 409                         g_free(status);
 410                         if (connect(sock, (struct sockaddr *) &address, sizeof (struct sockaddr_in)) == -1)
 411                         {
 412                                 if (errno != EINPROGRESS)
 413                                 {
 414                                         status = g_strdup_printf(_("Couldn't connect to host %s"), chost);
 415                                         show_error_message(status);
 416                                         g_free(status);
 417
 418                                         flac_ip.set_info_text(NULL);
 419                                         eof = TRUE;
 420                                 }
 421                         }
 422                         while (going)
 423                         {
 424                                 tv.tv_sec = 0;
 425                                 tv.tv_usec = 10000;
 426                                 FD_ZERO(&set);
 427                                 FD_SET(sock, &set);
 428                                 if (select(sock + 1, NULL, &set, NULL, &tv) > 0)
 429                                 {
 430                                         err_len = sizeof (error);
 431                                         getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &err_len);
 432                                         if (error)
 433                                         {
 434                                                 status = g_strdup_printf(_("Couldn't connect to host %s"),
 435                                                                          chost);
 436                                                 show_error_message(status);
 437                                                 g_free(status);
 438
 439                                                 flac_ip.set_info_text(NULL);
 440                                                 eof = TRUE;
 441
 442                                         }
 443                                         break;
 444                                 }
 445                         }
 446                         if (!eof)
 447                         {
 448                                 gchar *auth = NULL, *proxy_auth = NULL;
 449                                 gchar udpspace[30];
 450                                 int udp_port;
 451
 452                                 if (flac_cfg.stream.use_udp_channel)
 453                                 {
 454                                         udp_port = udp_establish_listener (&udp_sock);
 455                                         if (udp_port > 0)
 456                                                 sprintf (udpspace, "x-audiocast-udpport: %d\r\n", udp_port);
 457                                         else
 458                                                 udp_sock = 0;
 459                                 }
 460
 461                                 if(user && pass)
 462                                         auth = basic_authentication_encode(user, pass, "Authorization");
 463
 464                                 if (flac_cfg.stream.use_proxy)
 465                                 {
 466                                         file = g_strdup(url);
 467                                         if(flac_cfg.stream.proxy_use_auth && flac_cfg.stream.proxy_user && flac_cfg.stream.proxy_pass)
 468                                         {
 469                                                 proxy_auth = basic_authentication_encode(flac_cfg.stream.proxy_user,
 470                                                                                          flac_cfg.stream.proxy_pass,
 471                                                                                          "Proxy-Authorization");
 472                                         }
 473                                 }
 474                                 else
 475                                         file = g_strconcat("/", filename, NULL);
 476
 477                                 temp = g_strdup_printf("GET %s HTTP/1.0\r\n"
 478                                                        "Host: %s\r\n"
 479                                                        "User-Agent: %s/%s\r\n"
 480                                                        "%s%s%s%s",
 481                                                        file, host, "Reference FLAC Player", FLAC__VERSION_STRING,
 482                                                        proxy_auth ? proxy_auth : "", auth ? auth : "",
 483                                                        flac_cfg.stream.cast_title_streaming ?  "Icy-MetaData:1\r\n" : "",
 484                                                        flac_cfg.stream.use_udp_channel ? udpspace : "");
 485                                 if (offset && !head) {
 486                                         gchar *temp_dead = temp;
 487                                         temp = g_strconcat ("%sRange: %ll-\r\n", temp, offset);
 488                                         fprintf (stderr, "%s", temp);
 489                                         g_free (temp_dead);
 490                                 }
 491
 492                                 g_free(file);
 493                                 if(proxy_auth)
 494                                         g_free(proxy_auth);
 495                                 if(auth)
 496                                         g_free(auth);
 497                                 write(sock, temp, strlen(temp));
 498                                 write(sock, "\r\n", 2);
 499                                 g_free(temp);
 500                                 flac_ip.set_info_text(_("CONNECTED: WAITING FOR REPLY"));
 501                                 while (going && !eof)
 502                                   {
 503                                         if (http_check_for_data())
 504                                         {
 505                                                 if (flac_http_read_line(line, 1024))
 506                                                 {
 507                                                         status = strchr(line, ' ');
 508                                                         if (status)
 509                                                         {
 510                                                                 if (status[1] == '2')
 511                                                                         break;
 512                                                                 else if(status[1] == '3' && status[2] == '0' && status[3] == '2')
 513                                                                 {
 514                                                                         while(going)
 515                                                                         {
 516                                                                                 if(http_check_for_data())
 517                                                                                 {
 518                                                                                         if((cnt = flac_http_read_line(line, 1024)) != -1)
 519                                                                                         {
 520                                                                                                 if(!cnt)
 521                                                                                                         break;
 522                                                                                                 if(!strncmp(line, "Location:", 9))
 523                                                                                                 {
 524                                                                                                         g_free(url);
 525                                                                                                         url = g_strdup(line+10);
 526                                                                                                 }
 527                                                                                         }
 528                                                                                         else
 529                                                                                         {
 530                                                                                                 eof=TRUE;
 531                                                                                                 flac_ip.set_info_text(NULL);
 532                                                                                                 break;
 533                                                                                         }
 534                                                                                 }
 535                                                                         }
 536                                                                         redirect=TRUE;
 537                                                                         break;
 538                                                                 }
 539                                                                 else
 540                                                                 {
 541                                                                         status = g_strdup_printf(_("Couldn't connect to host %s\nServer reported: %s"), chost, status);
 542                                                                         show_error_message(status);
 543                                                                         g_free(status);
 544                                                                         break;
 545                                                                 }
 546                                                         }
 547                                                 }
 548                                                 else
 549                                                 {
 550                                                         eof = TRUE;
 551                                                         flac_ip.set_info_text(NULL);
 552                                                 }
 553                                         }
 554                                 }
 555
 556                                 while (going && !redirect)
 557                                 {
 558                                         if (http_check_for_data())
 559                                         {
 560                                                 if ((cnt = flac_http_read_line(line, 1024)) != -1)
 561                                                 {
 562                                                         if (!cnt)
 563                                                                 break;
 564                                                         if (!strncmp(line, "icy-name:", 9))
 565                                                                 icy_name = g_strdup(line + 9);
 566                                                         else if (!strncmp(line, "x-audiocast-name:", 17))
 567                                                                 icy_name = g_strdup(line + 17);
 568                                                         if (!strncmp(line, "icy-metaint:", 12))
 569                                                                 icy_metaint = atoi(line + 12);
 570                                                         if (!strncmp(line, "x-audiocast-udpport:", 20)) {
 571 #ifdef DEBUG_UDP
 572                                                                 fprintf (stderr, "Server wants udp messages on port %d\n", atoi (line + 20));
 573 #endif
 574                                                                 /*udp_serverport = atoi (line + 20);*/
 575                                                         }
 576
 577                                                 }
 578                                                 else
 579                                                 {
 580                                                         eof = TRUE;
 581                                                         flac_ip.set_info_text(NULL);
 582                                                         break;
 583                                                 }
 584                                         }
 585                                 }
 586                         }
 587                 }
 588
 589                 if(redirect)
 590                 {
 591                         if (output_file)
 592                         {
 593                                 fclose(output_file);
 594                                 output_file = NULL;
 595                         }
 596                         close(sock);
 597                 }
 598
 599                 g_free(user);
 600                 g_free(pass);
 601                 g_free(host);
 602                 g_free(filename);
 603         } while(redirect);
 604
 605         g_free(url);
 606         return eof ? -1 : sock;
 607 }
 608
 609 static void *http_buffer_loop(void *arg)
 610 {
 611         gchar *status, *url, *temp, *file;
 612         gint cnt, written;
 613         int udp_sock = 0;
 614
 615         url = (gchar *) arg;
 616         sock = http_connect (url, false, offset);
 617
 618         if (sock >= 0 && flac_cfg.stream.save_http_stream) {
 619                 gchar *output_name;
 620                 file = flac_http_get_title(url);
 621                 output_name = file;
 622                 if (!strncasecmp(output_name, "http://", 7))
 623                         output_name += 7;
 624                 temp = strrchr(output_name, '.');
 625                 if (temp && (!strcasecmp(temp, ".fla") || !strcasecmp(temp, ".flac")))
 626                         *temp = '\0';
 627
 628                 while ((temp = strchr(output_name, '/')))
 629                         *temp = '_';
 630                 output_name = g_strdup_printf("%s/%s.flac", flac_cfg.stream.save_http_path, output_name);
 631
 632                 g_free(file);
 633
 634                 output_file = fopen(output_name, "wb");
 635                 g_free(output_name);
 636         }
 637
 638         while (going)
 639         {
 640
 641                 if (!http_used() && !flac_ip.output->buffer_playing())
 642                         prebuffering = TRUE;
 643                 if (http_free() > 0 && !eof)
 644                 {
 645                         if (http_check_for_data())
 646                         {
 647                                 cnt = min(http_free(), buffer_length - wr_index);
 648                                 if (cnt > 1024)
 649                                         cnt = 1024;
 650                                 written = read(sock, buffer + wr_index, cnt);
 651                                 if (written <= 0)
 652                                 {
 653                                         eof = TRUE;
 654                                         if (prebuffering)
 655                                         {
 656                                                 prebuffering = FALSE;
 657
 658                                                 flac_ip.set_info_text(NULL);
 659                                         }
 660
 661                                 }
 662                                 else
 663                                         wr_index = (wr_index + written) % buffer_length;
 664                         }
 665
 666                         if (prebuffering)
 667                         {
 668                                 if (http_used() > prebuffer_length)
 669                                 {
 670                                         prebuffering = FALSE;
 671                                         flac_ip.set_info_text(NULL);
 672                                 }
 673                                 else
 674                                 {
 675                                         status = g_strdup_printf(_("PRE-BUFFERING: %dKB/%dKB"), http_used() / 1024, prebuffer_length / 1024);
 676                                         flac_ip.set_info_text(status);
 677                                         g_free(status);
 678                                 }
 679
 680                         }
 681                 }
 682                 else
 683                         xmms_usleep(10000);
 684
 685                 if (flac_cfg.stream.use_udp_channel && udp_sock != 0)
 686                         if (udp_check_for_data(udp_sock) < 0)
 687                         {
 688                                 close(udp_sock);
 689                                 udp_sock = 0;
 690                         }
 691         }
 692         if (output_file)
 693         {
 694                 fclose(output_file);
 695                 output_file = NULL;
 696         }
 697         if (sock >= 0) {
 698                 close(sock);
 699         }
 700         if (udp_sock != 0)
 701                 close(udp_sock);
 702
 703         g_free(buffer);
 704         g_free(url);
 705
 706         pthread_exit(NULL);
 707         return NULL; /* avoid compiler warning */
 708 }
 709
 710 int flac_http_open(gchar * _url, guint64 _offset)
 711 {
 712         gchar *url;
 713
 714         url = g_strdup(_url);
 715
 716         rd_index = 0;
 717         wr_index = 0;
 718         buffer_length = flac_cfg.stream.http_buffer_size * 1024;
 719         prebuffer_length = (buffer_length * flac_cfg.stream.http_prebuffer) / 100;
 720         buffer_read = 0;
 721         icy_metaint = 0;
 722         prebuffering = TRUE;
 723         going = TRUE;
 724         eof = FALSE;
 725         buffer = g_malloc(buffer_length);
 726         offset = _offset;
 727
 728         pthread_create(&thread, NULL, http_buffer_loop, url);
 729
 730         return 0;
 731 }
 732
 733 char *flac_http_get_title(char *url)
 734 {
 735         if (icy_name)
 736                 return g_strdup(icy_name);
 737         if (g_basename(url) && strlen(g_basename(url)) > 0)
 738                 return g_strdup(g_basename(url));
 739         return g_strdup(url);
 740 }
 741
 742 /* Start UDP Channel specific stuff */
 743
 744 /* Find a good local udp port and bind udp_sock to it, return the port */
 745 static int udp_establish_listener(int *sock)
 746 {
 747         struct sockaddr_in sin;
 748         socklen_t sinlen = sizeof (struct sockaddr_in);
 749
 750 #ifdef DEBUG_UDP
 751         fprintf (stderr,"Establishing udp listener\n");
 752 #endif
 753
 754         if ((*sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
 755         {
 756                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 757                       "udp_establish_listener(): unable to create socket");
 758                 return -1;
 759         }
 760
 761         memset(&sin, 0, sinlen);
 762         sin.sin_family = AF_INET;
 763         sin.sin_addr.s_addr = g_htonl(INADDR_ANY);
 764
 765         if (bind(*sock, (struct sockaddr *)&sin, sinlen) < 0)
 766         {
 767                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 768                       "udp_establish_listener():  Failed to bind socket to localhost: %s", strerror(errno));
 769                 close(*sock);
 770                 return -1;
 771         }
 772         if (fcntl(*sock, F_SETFL, O_NONBLOCK) < 0)
 773         {
 774                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 775                       "udp_establish_listener():  Failed to set flags: %s", strerror(errno));
 776                 close(*sock);
 777                 return -1;
 778         }
 779
 780         memset(&sin, 0, sinlen);
 781         if (getsockname(*sock, (struct sockaddr *)&sin, &sinlen) < 0)
 782         {
 783                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 784                       "udp_establish_listener():  Failed to retrieve socket info: %s", strerror(errno));
 785                 close(*sock);
 786                 return -1;
 787         }
 788
 789 #ifdef DEBUG_UDP
 790         fprintf (stderr,"Listening on local %s:%d\n", inet_ntoa(sin.sin_addr), g_ntohs(sin.sin_port));
 791 #endif
 792
 793         return g_ntohs(sin.sin_port);
 794 }
 795
 796 static int udp_check_for_data(int sock)
 797 {
 798         char buf[1025], **lines;
 799         char *valptr;
 800         gchar *title;
 801         gint len, i;
 802         struct sockaddr_in from;
 803         socklen_t fromlen;
 804
 805         fromlen = sizeof(struct sockaddr_in);
 806
 807         if ((len = recvfrom(sock, buf, 1024, 0, (struct sockaddr *)&from, &fromlen)) < 0)
 808         {
 809                 if (errno != EAGAIN)
 810                 {
 811                         g_log(NULL, G_LOG_LEVEL_CRITICAL,
 812                               "udp_read_data(): Error reading from socket: %s", strerror(errno));
 813                         return -1;
 814                 }
 815                 return 0;
 816         }
 817         buf[len] = '\0';
 818 #ifdef DEBUG_UDP
 819         fprintf (stderr,"Received: [%s]\n", buf);
 820 #endif
 821         lines = g_strsplit(buf, "\n", 0);
 822         if (!lines)
 823                 return 0;
 824
 825         for (i = 0; lines[i]; i++)
 826         {
 827                 while ((lines[i][strlen(lines[i]) - 1] == '\n') ||
 828                        (lines[i][strlen(lines[i]) - 1] == '\r'))
 829                         lines[i][strlen(lines[i]) - 1] = '\0';
 830
 831                 valptr = strchr(lines[i], ':');
 832
 833                 if (!valptr)
 834                         continue;
 835                 else
 836                         valptr++;
 837
 838                 g_strstrip(valptr);
 839                 if (!strlen(valptr))
 840                         continue;
 841
 842                 if (strstr(lines[i], "x-audiocast-streamtitle") != NULL)
 843                 {
 844                         title = g_strdup_printf ("%s (%s)", valptr, icy_name);
 845                         if (going)
 846                                 set_track_info(title, -1);
 847                         g_free (title);
 848                 }
 849
 850 #if 0
 851                 else if (strstr(lines[i], "x-audiocast-streamlength") != NULL)
 852                 {
 853                         if (atoi(valptr) != -1)
 854                                 set_track_info(NULL, atoi(valptr));
 855                 }
 856 #endif
 857
 858                 else if (strstr(lines[i], "x-audiocast-streammsg") != NULL)
 859                 {
 860                         /* set_track_info(title, -1); */
 861 /*                      xmms_show_message(_("Message"), valptr, _("Ok"), */
 862 /*                                        FALSE, NULL, NULL); */
 863                         g_message("Stream_message: %s", valptr);
 864                 }
 865
 866 #if 0
 867                 /* Use this to direct your webbrowser.. yeah right.. */
 868                 else if (strstr(lines[i], "x-audiocast-streamurl") != NULL)
 869                 {
 870                         if (lasturl && g_strcmp (valptr, lasturl))
 871                         {
 872                                 c_message (stderr, "Song URL: %s\n", valptr);
 873                                 g_free (lasturl);
 874                                 lasturl = g_strdup (valptr);
 875                         }
 876                 }
 877 #endif
 878                 else if (strstr(lines[i], "x-audiocast-udpseqnr:") != NULL)
 879                 {
 880                         gchar obuf[60];
 881                         sprintf(obuf, "x-audiocast-ack: %ld \r\n", atol(valptr));
 882                         if (sendto(sock, obuf, strlen(obuf), 0, (struct sockaddr *) &from, fromlen) < 0)
 883                         {
 884                                 g_log(NULL, G_LOG_LEVEL_WARNING,
 885                                       "udp_check_for_data(): Unable to send ack to server: %s", strerror(errno));
 886                         }
 887 #ifdef DEBUG_UDP
 888                         else
 889                                 fprintf(stderr,"Sent ack: %s", obuf);
 890                         fprintf (stderr,"Remote: %s:%d\n", inet_ntoa(from.sin_addr), g_ntohs(from.sin_port));
 891 #endif
 892                 }
 893         }
 894         g_strfreev(lines);
 895         return 0;
 896 }