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
  20 #if HAVE_CONFIG_H
  21 #  include <config.h>
  22 #endif
  23
  24 #include <sys/types.h>
  25 #include <sys/socket.h>
  26 #include <sys/time.h>
  27 #include <netinet/in.h>
  28 #include <arpa/inet.h>
  29 #include <netdb.h>
  30 #include <glib.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33 #include <unistd.h>
  34 #include <errno.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37
  38 #include <pthread.h>
  39
  40 #include <xmms/util.h>
  41 #include <xmms/plugin.h>
  42
  43 #include "configure.h"
  44 #include "plugin_common/locale_hack.h"
  45 #include "FLAC/format.h"
  46 #include "plugin.h"
  47
  48 /* on FreeBSD we get socklen_t from <sys/socket.h> */
  49 #if (!defined HAVE_SOCKLEN_T) && !defined(__FreeBSD__)
  50 typedef unsigned int socklen_t;
  51 #endif
  52
  53 #define min(x,y) ((x)<(y)?(x):(y))
  54 #define min3(x,y,z) (min(x,y)<(z)?min(x,y):(z))
  55 #define min4(x,y,z,w) (min3(x,y,z)<(w)?min3(x,y,z):(w))
  56
  57 static gchar *icy_name = NULL;
  58 static gint icy_metaint = 0;
  59
  60 extern InputPlugin flac_ip;
  61
  62 #undef DEBUG_UDP
  63
  64 /* Static udp channel functions */
  65 static int udp_establish_listener (gint *sock);
  66 static int udp_check_for_data(gint sock);
  67
  68 static char *flac_http_get_title(char *url);
  69
  70 static gboolean prebuffering, going, eof = FALSE;
  71 static gint sock, rd_index, wr_index, buffer_length, prebuffer_length;
  72 static guint64 buffer_read = 0;
  73 static gchar *buffer;
  74 static guint64 offset;
  75 static pthread_t thread;
  76 static GtkWidget *error_dialog = NULL;
  77
  78 static FILE *output_file = NULL;
  79
  80 #define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
  81
  82 /* Encode the string S of length LENGTH to base64 format and place it
  83    to STORE.  STORE will be 0-terminated, and must point to a writable
  84    buffer of at least 1+BASE64_LENGTH(length) bytes.  */
  85 static void base64_encode (const gchar *s, gchar *store, gint length)
  86 {
  87         /* Conversion table.  */
  88         static gchar tbl[64] = {
  89                 'A','B','C','D','E','F','G','H',
  90                 'I','J','K','L','M','N','O','P',
  91                 'Q','R','S','T','U','V','W','X',
  92                 'Y','Z','a','b','c','d','e','f',
  93                 'g','h','i','j','k','l','m','n',
  94                 'o','p','q','r','s','t','u','v',
  95                 'w','x','y','z','0','1','2','3',
  96                 '4','5','6','7','8','9','+','/'
  97         };
  98         gint i;
  99         guchar *p = (guchar *)store;
 100
 101         /* Transform the 3x8 bits to 4x6 bits, as required by base64.  */
 102         for (i = 0; i < length; i += 3)
 103         {
 104                 *p++ = tbl[s[0] >> 2];
 105                 *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
 106                 *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
 107                 *p++ = tbl[s[2] & 0x3f];
 108                 s += 3;
 109         }
 110         /* Pad the result if necessary...  */
 111         if (i == length + 1)
 112                 *(p - 1) = '=';
 113         else if (i == length + 2)
 114                 *(p - 1) = *(p - 2) = '=';
 115         /* ...and zero-terminate it.  */
 116         *p = '\0';
 117 }
 118
 119 /* Create the authentication header contents for the `Basic' scheme.
 120    This is done by encoding the string `USER:PASS' in base64 and
 121    prepending `HEADER: Basic ' to it.  */
 122 static gchar *basic_authentication_encode (const gchar *user, const gchar *passwd, const gchar *header)
 123 {
 124         gchar *t1, *t2, *res;
 125         gint len1 = strlen (user) + 1 + strlen (passwd);
 126         gint len2 = BASE64_LENGTH (len1);
 127
 128         t1 = g_strdup_printf("%s:%s", user, passwd);
 129         t2 = g_malloc0(len2 + 1);
 130         base64_encode (t1, t2, len1);
 131         res = g_strdup_printf("%s: Basic %s\r\n", header, t2);
 132         g_free(t2);
 133         g_free(t1);
 134
 135         return res;
 136 }
 137
 138 static void parse_url(const gchar * url, gchar ** user, gchar ** pass, gchar ** host, int *port, gchar ** filename)
 139 {
 140         gchar *h, *p, *pt, *f, *temp, *ptr;
 141
 142         temp = g_strdup(url);
 143         ptr = temp;
 144
 145         if (!strncasecmp("http://", ptr, 7))
 146                 ptr += 7;
 147         h = strchr(ptr, '@');
 148         f = strchr(ptr, '/');
 149         if (h != NULL && (!f || h < f))
 150         {
 151                 *h = '\0';
 152                 p = strchr(ptr, ':');
 153                 if (p != NULL && p < h)
 154                 {
 155                         *p = '\0';
 156                         p++;
 157                         *pass = g_strdup(p);
 158                 }
 159                 else
 160                         *pass = NULL;
 161                 *user = g_strdup(ptr);
 162                 h++;
 163                 ptr = h;
 164         }
 165         else
 166         {
 167                 *user = NULL;
 168                 *pass = NULL;
 169                 h = ptr;
 170         }
 171         pt = strchr(ptr, ':');
 172         if (pt != NULL && (f == NULL || pt < f))
 173         {
 174                 *pt = '\0';
 175                 *port = atoi(pt + 1);
 176         }
 177         else
 178         {
 179                 if (f)
 180                         *f = '\0';
 181                 *port = 80;
 182         }
 183         *host = g_strdup(h);
 184
 185         if (f)
 186                 *filename = g_strdup(f + 1);
 187         else
 188                 *filename = NULL;
 189         g_free(temp);
 190 }
 191
 192 void flac_http_close(void)
 193 {
 194         going = FALSE;
 195
 196         pthread_join(thread, NULL);
 197         g_free(icy_name);
 198         icy_name = NULL;
 199 }
 200
 201
 202 static gint http_used(void)
 203 {
 204         if (wr_index >= rd_index)
 205                 return wr_index - rd_index;
 206         return buffer_length - (rd_index - wr_index);
 207 }
 208
 209 static gint http_free(void)
 210 {
 211         if (rd_index > wr_index)
 212                 return (rd_index - wr_index) - 1;
 213         return (buffer_length - (wr_index - rd_index)) - 1;
 214 }
 215
 216 static void http_wait_for_data(gint bytes)
 217 {
 218         while ((prebuffering || http_used() < bytes) && !eof && going)
 219                 xmms_usleep(10000);
 220 }
 221
 222 static void show_error_message(gchar *error)
 223 {
 224         if(!error_dialog)
 225         {
 226                 GDK_THREADS_ENTER();
 227                 error_dialog = xmms_show_message(_("Error"), error, _("Ok"), FALSE,
 228                                                  NULL, NULL);
 229                 gtk_signal_connect(GTK_OBJECT(error_dialog),
 230                                    "destroy",
 231                                    GTK_SIGNAL_FUNC(gtk_widget_destroyed),
 232                                    &error_dialog);
 233                 GDK_THREADS_LEAVE();
 234         }
 235 }
 236
 237 int flac_http_read(gpointer data, gint length)
 238 {
 239         gint len, cnt, off = 0, meta_len, meta_off = 0, i;
 240         gchar *meta_data, **tags, *temp, *title;
 241         if (length > buffer_length) {
 242                 length = buffer_length;
 243         }
 244
 245         http_wait_for_data(length);
 246
 247         if (!going)
 248                 return 0;
 249         len = min(http_used(), length);
 250
 251         while (len && http_used())
 252         {
 253                 if ((flac_cfg.stream.cast_title_streaming) && (icy_metaint > 0) && (buffer_read % icy_metaint) == 0 && (buffer_read > 0))
 254                 {
 255                         meta_len = *((guchar *) buffer + rd_index) * 16;
 256                         rd_index = (rd_index + 1) % buffer_length;
 257                         if (meta_len > 0)
 258                         {
 259                                 http_wait_for_data(meta_len);
 260                                 meta_data = g_malloc0(meta_len);
 261                                 if (http_used() >= meta_len)
 262                                 {
 263                                         while (meta_len)
 264                                         {
 265                                                 cnt = min(meta_len, buffer_length - rd_index);
 266                                                 memcpy(meta_data + meta_off, buffer + rd_index, cnt);
 267                                                 rd_index = (rd_index + cnt) % buffer_length;
 268                                                 meta_len -= cnt;
 269                                                 meta_off += cnt;
 270                                         }
 271                                         tags = g_strsplit(meta_data, "';", 0);
 272
 273                                         for (i = 0; tags[i]; i++)
 274                                         {
 275                                                 if (!strncasecmp(tags[i], "StreamTitle=", 12))
 276                                                 {
 277                                                         temp = g_strdup(tags[i] + 13);
 278                                                         title = g_strdup_printf("%s (%s)", temp, icy_name);
 279                                                         set_track_info(title, -1);
 280                                                         g_free(title);
 281                                                         g_free(temp);
 282                                                 }
 283
 284                                         }
 285                                         g_strfreev(tags);
 286
 287                                 }
 288                                 g_free(meta_data);
 289                         }
 290                         if (!http_used())
 291                                 http_wait_for_data(length - off);
 292                         cnt = min3(len, buffer_length - rd_index, http_used());
 293                 }
 294                 else if ((icy_metaint > 0) && (flac_cfg.stream.cast_title_streaming))
 295                         cnt = min4(len, buffer_length - rd_index, http_used(), icy_metaint - (gint) (buffer_read % icy_metaint));
 296                 else
 297                         cnt = min3(len, buffer_length - rd_index, http_used());
 298                 if (output_file)
 299                         fwrite(buffer + rd_index, 1, cnt, output_file);
 300
 301                 memcpy((gchar *)data + off, buffer + rd_index, cnt);
 302                 rd_index = (rd_index + cnt) % buffer_length;
 303                 buffer_read += cnt;
 304                 len -= cnt;
 305                 off += cnt;
 306         }
 307         if (!off) {
 308                 fprintf(stderr, "returning zero\n");
 309         }
 310         return off;
 311 }
 312
 313 static gboolean http_check_for_data(void)
 314 {
 315
 316         fd_set set;
 317         struct timeval tv;
 318         gint ret;
 319
 320         tv.tv_sec = 0;
 321         tv.tv_usec = 20000;
 322         FD_ZERO(&set);
 323         FD_SET(sock, &set);
 324         ret = select(sock + 1, &set, NULL, NULL, &tv);
 325         if (ret > 0)
 326                 return TRUE;
 327         return FALSE;
 328 }
 329
 330 gint flac_http_read_line(gchar * buf, gint size)
 331 {
 332         gint i = 0;
 333
 334         while (going && i < size - 1)
 335         {
 336                 if (http_check_for_data())
 337                 {
 338                         if (read(sock, buf + i, 1) <= 0)
 339                                 return -1;
 340                         if (buf[i] == '\n')
 341                                 break;
 342                         if (buf[i] != '\r')
 343                                 i++;
 344                 }
 345         }
 346         if (!going)
 347                 return -1;
 348         buf[i] = '\0';
 349         return i;
 350 }
 351
 352 /* returns the file descriptor of the socket, or -1 on error */
 353 static int http_connect (gchar *url_, gboolean head, guint64 offset)
 354 {
 355         gchar line[1024], *user, *pass, *host, *filename,
 356              *status, *url, *temp, *file;
 357         gchar *chost;
 358         gint cnt, error, err_len, port, cport;
 359         gboolean redirect;
 360         int udp_sock = 0;
 361         fd_set set;
 362         struct hostent *hp;
 363         struct sockaddr_in address;
 364         struct timeval tv;
 365
 366         url = g_strdup (url_);
 367
 368         do
 369         {
 370                 redirect=FALSE;
 371
 372                 g_strstrip(url);
 373
 374                 parse_url(url, &user, &pass, &host, &port, &filename);
 375
 376                 if ((!filename || !*filename) && url[strlen(url) - 1] != '/')
 377                         temp = g_strconcat(url, "/", NULL);
 378                 else
 379                         temp = g_strdup(url);
 380                 g_free(url);
 381                 url = temp;
 382
 383                 chost = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_host : host;
 384                 cport = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_port : port;
 385
 386                 sock = socket(AF_INET, SOCK_STREAM, 0);
 387                 fcntl(sock, F_SETFL, O_NONBLOCK);
 388                 address.sin_family = AF_INET;
 389
 390                 status = g_strdup_printf(_("LOOKING UP %s"), chost);
 391                 flac_ip.set_info_text(status);
 392                 g_free(status);
 393
 394                 if (!(hp = gethostbyname(chost)))
 395                 {
 396                         status = g_strdup_printf(_("Couldn't look up host %s"), chost);
 397                         show_error_message(status);
 398                         g_free(status);
 399
 400                         flac_ip.set_info_text(NULL);
 401                         eof = TRUE;
 402                 }
 403
 404                 if (!eof)
 405                 {
 406                         memcpy(&address.sin_addr.s_addr, *(hp->h_addr_list), sizeof (address.sin_addr.s_addr));
 407                         address.sin_port = (gint) g_htons(cport);
 408
 409                         status = g_strdup_printf(_("CONNECTING TO %s:%d"), chost, cport);
 410                         flac_ip.set_info_text(status);
 411                         g_free(status);
 412                         if (connect(sock, (struct sockaddr *) &address, sizeof (struct sockaddr_in)) == -1)
 413                         {
 414                                 if (errno != EINPROGRESS)
 415                                 {
 416                                         status = g_strdup_printf(_("Couldn't connect to host %s"), chost);
 417                                         show_error_message(status);
 418                                         g_free(status);
 419
 420                                         flac_ip.set_info_text(NULL);
 421                                         eof = TRUE;
 422                                 }
 423                         }
 424                         while (going)
 425                         {
 426                                 tv.tv_sec = 0;
 427                                 tv.tv_usec = 10000;
 428                                 FD_ZERO(&set);
 429                                 FD_SET(sock, &set);
 430                                 if (select(sock + 1, NULL, &set, NULL, &tv) > 0)
 431                                 {
 432                                         err_len = sizeof (error);
 433                                         getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &err_len);
 434                                         if (error)
 435                                         {
 436                                                 status = g_strdup_printf(_("Couldn't connect to host %s"),
 437                                                                          chost);
 438                                                 show_error_message(status);
 439                                                 g_free(status);
 440
 441                                                 flac_ip.set_info_text(NULL);
 442                                                 eof = TRUE;
 443
 444                                         }
 445                                         break;
 446                                 }
 447                         }
 448                         if (!eof)
 449                         {
 450                                 gchar *auth = NULL, *proxy_auth = NULL;
 451                                 gchar udpspace[30];
 452                                 int udp_port;
 453
 454                                 if (flac_cfg.stream.use_udp_channel)
 455                                 {
 456                                         udp_port = udp_establish_listener (&udp_sock);
 457                                         if (udp_port > 0)
 458                                                 sprintf (udpspace, "x-audiocast-udpport: %d\r\n", udp_port);
 459                                         else
 460                                                 udp_sock = 0;
 461                                 }
 462
 463                                 if(user && pass)
 464                                         auth = basic_authentication_encode(user, pass, "Authorization");
 465
 466                                 if (flac_cfg.stream.use_proxy)
 467                                 {
 468                                         file = g_strdup(url);
 469                                         if(flac_cfg.stream.proxy_use_auth && flac_cfg.stream.proxy_user && flac_cfg.stream.proxy_pass)
 470                                         {
 471                                                 proxy_auth = basic_authentication_encode(flac_cfg.stream.proxy_user,
 472                                                                                          flac_cfg.stream.proxy_pass,
 473                                                                                          "Proxy-Authorization");
 474                                         }
 475                                 }
 476                                 else
 477                                         file = g_strconcat("/", filename, NULL);
 478
 479                                 temp = g_strdup_printf("GET %s HTTP/1.0\r\n"
 480                                                        "Host: %s\r\n"
 481                                                        "User-Agent: %s/%s\r\n"
 482                                                        "%s%s%s%s",
 483                                                        file, host, "Reference FLAC Player", FLAC__VERSION_STRING,
 484                                                        proxy_auth ? proxy_auth : "", auth ? auth : "",
 485                                                        flac_cfg.stream.cast_title_streaming ?  "Icy-MetaData:1\r\n" : "",
 486                                                        flac_cfg.stream.use_udp_channel ? udpspace : "");
 487                                 if (offset && !head) {
 488                                         gchar *temp_dead = temp;
 489                                         temp = g_strdup_printf ("%sRange: %llu-\r\n", temp, offset);
 490                                         fprintf (stderr, "%s", temp);
 491                                         g_free (temp_dead);
 492                                 }
 493
 494                                 g_free(file);
 495                                 if(proxy_auth)
 496                                         g_free(proxy_auth);
 497                                 if(auth)
 498                                         g_free(auth);
 499                                 write(sock, temp, strlen(temp));
 500                                 write(sock, "\r\n", 2);
 501                                 g_free(temp);
 502                                 flac_ip.set_info_text(_("CONNECTED: WAITING FOR REPLY"));
 503                                 while (going && !eof)
 504                                   {
 505                                         if (http_check_for_data())
 506                                         {
 507                                                 if (flac_http_read_line(line, 1024))
 508                                                 {
 509                                                         status = strchr(line, ' ');
 510                                                         if (status)
 511                                                         {
 512                                                                 if (status[1] == '2')
 513                                                                         break;
 514                                                                 else if(status[1] == '3' && status[2] == '0' && status[3] == '2')
 515                                                                 {
 516                                                                         while(going)
 517                                                                         {
 518                                                                                 if(http_check_for_data())
 519                                                                                 {
 520                                                                                         if((cnt = flac_http_read_line(line, 1024)) != -1)
 521                                                                                         {
 522                                                                                                 if(!cnt)
 523                                                                                                         break;
 524                                                                                                 if(!strncmp(line, "Location:", 9))
 525                                                                                                 {
 526                                                                                                         g_free(url);
 527                                                                                                         url = g_strdup(line+10);
 528                                                                                                 }
 529                                                                                         }
 530                                                                                         else
 531                                                                                         {
 532                                                                                                 eof=TRUE;
 533                                                                                                 flac_ip.set_info_text(NULL);
 534                                                                                                 break;
 535                                                                                         }
 536                                                                                 }
 537                                                                         }
 538                                                                         redirect=TRUE;
 539                                                                         break;
 540                                                                 }
 541                                                                 else
 542                                                                 {
 543                                                                         status = g_strdup_printf(_("Couldn't connect to host %s\nServer reported: %s"), chost, status);
 544                                                                         show_error_message(status);
 545                                                                         g_free(status);
 546                                                                         break;
 547                                                                 }
 548                                                         }
 549                                                 }
 550                                                 else
 551                                                 {
 552                                                         eof = TRUE;
 553                                                         flac_ip.set_info_text(NULL);
 554                                                 }
 555                                         }
 556                                 }
 557
 558                                 while (going && !redirect)
 559                                 {
 560                                         if (http_check_for_data())
 561                                         {
 562                                                 if ((cnt = flac_http_read_line(line, 1024)) != -1)
 563                                                 {
 564                                                         if (!cnt)
 565                                                                 break;
 566                                                         if (!strncmp(line, "icy-name:", 9))
 567                                                                 icy_name = g_strdup(line + 9);
 568                                                         else if (!strncmp(line, "x-audiocast-name:", 17))
 569                                                                 icy_name = g_strdup(line + 17);
 570                                                         if (!strncmp(line, "icy-metaint:", 12))
 571                                                                 icy_metaint = atoi(line + 12);
 572                                                         if (!strncmp(line, "x-audiocast-udpport:", 20)) {
 573 #ifdef DEBUG_UDP
 574                                                                 fprintf (stderr, "Server wants udp messages on port %d\n", atoi (line + 20));
 575 #endif
 576                                                                 /*udp_serverport = atoi (line + 20);*/
 577                                                         }
 578
 579                                                 }
 580                                                 else
 581                                                 {
 582                                                         eof = TRUE;
 583                                                         flac_ip.set_info_text(NULL);
 584                                                         break;
 585                                                 }
 586                                         }
 587                                 }
 588                         }
 589                 }
 590
 591                 if(redirect)
 592                 {
 593                         if (output_file)
 594                         {
 595                                 fclose(output_file);
 596                                 output_file = NULL;
 597                         }
 598                         close(sock);
 599                 }
 600
 601                 g_free(user);
 602                 g_free(pass);
 603                 g_free(host);
 604                 g_free(filename);
 605         } while(redirect);
 606
 607         g_free(url);
 608         return eof ? -1 : sock;
 609 }
 610
 611 static void *http_buffer_loop(void *arg)
 612 {
 613         gchar *status, *url, *temp, *file;
 614         gint cnt, written;
 615         int udp_sock = 0;
 616
 617         url = (gchar *) arg;
 618         sock = http_connect (url, false, offset);
 619
 620         if (sock >= 0 && flac_cfg.stream.save_http_stream) {
 621                 gchar *output_name;
 622                 file = flac_http_get_title(url);
 623                 output_name = file;
 624                 if (!strncasecmp(output_name, "http://", 7))
 625                         output_name += 7;
 626                 temp = strrchr(output_name, '.');
 627                 if (temp && (!strcasecmp(temp, ".fla") || !strcasecmp(temp, ".flac")))
 628                         *temp = '\0';
 629
 630                 while ((temp = strchr(output_name, '/')))
 631                         *temp = '_';
 632                 output_name = g_strdup_printf("%s/%s.flac", flac_cfg.stream.save_http_path, output_name);
 633
 634                 g_free(file);
 635
 636                 output_file = fopen(output_name, "wb");
 637                 g_free(output_name);
 638         }
 639
 640         while (going)
 641         {
 642
 643                 if (!http_used() && !flac_ip.output->buffer_playing())
 644                         prebuffering = TRUE;
 645                 if (http_free() > 0 && !eof)
 646                 {
 647                         if (http_check_for_data())
 648                         {
 649                                 cnt = min(http_free(), buffer_length - wr_index);
 650                                 if (cnt > 1024)
 651                                         cnt = 1024;
 652                                 written = read(sock, buffer + wr_index, cnt);
 653                                 if (written <= 0)
 654                                 {
 655                                         eof = TRUE;
 656                                         if (prebuffering)
 657                                         {
 658                                                 prebuffering = FALSE;
 659
 660                                                 flac_ip.set_info_text(NULL);
 661                                         }
 662
 663                                 }
 664                                 else
 665                                         wr_index = (wr_index + written) % buffer_length;
 666                         }
 667
 668                         if (prebuffering)
 669                         {
 670                                 if (http_used() > prebuffer_length)
 671                                 {
 672                                         prebuffering = FALSE;
 673                                         flac_ip.set_info_text(NULL);
 674                                 }
 675                                 else
 676                                 {
 677                                         status = g_strdup_printf(_("PRE-BUFFERING: %dKB/%dKB"), http_used() / 1024, prebuffer_length / 1024);
 678                                         flac_ip.set_info_text(status);
 679                                         g_free(status);
 680                                 }
 681
 682                         }
 683                 }
 684                 else
 685                         xmms_usleep(10000);
 686
 687                 if (flac_cfg.stream.use_udp_channel && udp_sock != 0)
 688                         if (udp_check_for_data(udp_sock) < 0)
 689                         {
 690                                 close(udp_sock);
 691                                 udp_sock = 0;
 692                         }
 693         }
 694         if (output_file)
 695         {
 696                 fclose(output_file);
 697                 output_file = NULL;
 698         }
 699         if (sock >= 0) {
 700                 close(sock);
 701         }
 702         if (udp_sock != 0)
 703                 close(udp_sock);
 704
 705         g_free(buffer);
 706         g_free(url);
 707
 708         pthread_exit(NULL);
 709         return NULL; /* avoid compiler warning */
 710 }
 711
 712 int flac_http_open(gchar * _url, guint64 _offset)
 713 {
 714         gchar *url;
 715
 716         url = g_strdup(_url);
 717
 718         rd_index = 0;
 719         wr_index = 0;
 720         buffer_length = flac_cfg.stream.http_buffer_size * 1024;
 721         prebuffer_length = (buffer_length * flac_cfg.stream.http_prebuffer) / 100;
 722         buffer_read = 0;
 723         icy_metaint = 0;
 724         prebuffering = TRUE;
 725         going = TRUE;
 726         eof = FALSE;
 727         buffer = g_malloc(buffer_length);
 728         offset = _offset;
 729
 730         pthread_create(&thread, NULL, http_buffer_loop, url);
 731
 732         return 0;
 733 }
 734
 735 char *flac_http_get_title(char *url)
 736 {
 737         if (icy_name)
 738                 return g_strdup(icy_name);
 739         if (g_basename(url) && strlen(g_basename(url)) > 0)
 740                 return g_strdup(g_basename(url));
 741         return g_strdup(url);
 742 }
 743
 744 /* Start UDP Channel specific stuff */
 745
 746 /* Find a good local udp port and bind udp_sock to it, return the port */
 747 static int udp_establish_listener(int *sock)
 748 {
 749         struct sockaddr_in sin;
 750         socklen_t sinlen = sizeof (struct sockaddr_in);
 751
 752 #ifdef DEBUG_UDP
 753         fprintf (stderr,"Establishing udp listener\n");
 754 #endif
 755
 756         if ((*sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
 757         {
 758                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 759                       "udp_establish_listener(): unable to create socket");
 760                 return -1;
 761         }
 762
 763         memset(&sin, 0, sinlen);
 764         sin.sin_family = AF_INET;
 765         sin.sin_addr.s_addr = g_htonl(INADDR_ANY);
 766
 767         if (bind(*sock, (struct sockaddr *)&sin, sinlen) < 0)
 768         {
 769                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 770                       "udp_establish_listener():  Failed to bind socket to localhost: %s", strerror(errno));
 771                 close(*sock);
 772                 return -1;
 773         }
 774         if (fcntl(*sock, F_SETFL, O_NONBLOCK) < 0)
 775         {
 776                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 777                       "udp_establish_listener():  Failed to set flags: %s", strerror(errno));
 778                 close(*sock);
 779                 return -1;
 780         }
 781
 782         memset(&sin, 0, sinlen);
 783         if (getsockname(*sock, (struct sockaddr *)&sin, &sinlen) < 0)
 784         {
 785                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 786                       "udp_establish_listener():  Failed to retrieve socket info: %s", strerror(errno));
 787                 close(*sock);
 788                 return -1;
 789         }
 790
 791 #ifdef DEBUG_UDP
 792         fprintf (stderr,"Listening on local %s:%d\n", inet_ntoa(sin.sin_addr), g_ntohs(sin.sin_port));
 793 #endif
 794
 795         return g_ntohs(sin.sin_port);
 796 }
 797
 798 static int udp_check_for_data(int sock)
 799 {
 800         char buf[1025], **lines;
 801         char *valptr;
 802         gchar *title;
 803         gint len, i;
 804         struct sockaddr_in from;
 805         socklen_t fromlen;
 806
 807         fromlen = sizeof(struct sockaddr_in);
 808
 809         if ((len = recvfrom(sock, buf, 1024, 0, (struct sockaddr *)&from, &fromlen)) < 0)
 810         {
 811                 if (errno != EAGAIN)
 812                 {
 813                         g_log(NULL, G_LOG_LEVEL_CRITICAL,
 814                               "udp_read_data(): Error reading from socket: %s", strerror(errno));
 815                         return -1;
 816                 }
 817                 return 0;
 818         }
 819         buf[len] = '\0';
 820 #ifdef DEBUG_UDP
 821         fprintf (stderr,"Received: [%s]\n", buf);
 822 #endif
 823         lines = g_strsplit(buf, "\n", 0);
 824         if (!lines)
 825                 return 0;
 826
 827         for (i = 0; lines[i]; i++)
 828         {
 829                 while ((lines[i][strlen(lines[i]) - 1] == '\n') ||
 830                        (lines[i][strlen(lines[i]) - 1] == '\r'))
 831                         lines[i][strlen(lines[i]) - 1] = '\0';
 832
 833                 valptr = strchr(lines[i], ':');
 834
 835                 if (!valptr)
 836                         continue;
 837                 else
 838                         valptr++;
 839
 840                 g_strstrip(valptr);
 841                 if (!strlen(valptr))
 842                         continue;
 843
 844                 if (strstr(lines[i], "x-audiocast-streamtitle") != NULL)
 845                 {
 846                         title = g_strdup_printf ("%s (%s)", valptr, icy_name);
 847                         if (going)
 848                                 set_track_info(title, -1);
 849                         g_free (title);
 850                 }
 851
 852 #if 0
 853                 else if (strstr(lines[i], "x-audiocast-streamlength") != NULL)
 854                 {
 855                         if (atoi(valptr) != -1)
 856                                 set_track_info(NULL, atoi(valptr));
 857                 }
 858 #endif
 859
 860                 else if (strstr(lines[i], "x-audiocast-streammsg") != NULL)
 861                 {
 862                         /* set_track_info(title, -1); */
 863 /*                      xmms_show_message(_("Message"), valptr, _("Ok"), */
 864 /*                                        FALSE, NULL, NULL); */
 865                         g_message("Stream_message: %s", valptr);
 866                 }
 867
 868 #if 0
 869                 /* Use this to direct your webbrowser.. yeah right.. */
 870                 else if (strstr(lines[i], "x-audiocast-streamurl") != NULL)
 871                 {
 872                         if (lasturl && g_strcmp (valptr, lasturl))
 873                         {
 874                                 c_message (stderr, "Song URL: %s\n", valptr);
 875                                 g_free (lasturl);
 876                                 lasturl = g_strdup (valptr);
 877                         }
 878                 }
 879 #endif
 880                 else if (strstr(lines[i], "x-audiocast-udpseqnr:") != NULL)
 881                 {
 882                         gchar obuf[60];
 883                         sprintf(obuf, "x-audiocast-ack: %ld \r\n", atol(valptr));
 884                         if (sendto(sock, obuf, strlen(obuf), 0, (struct sockaddr *) &from, fromlen) < 0)
 885                         {
 886                                 g_log(NULL, G_LOG_LEVEL_WARNING,
 887                                       "udp_check_for_data(): Unable to send ack to server: %s", strerror(errno));
 888                         }
 889 #ifdef DEBUG_UDP
 890                         else
 891                                 fprintf(stderr,"Sent ack: %s", obuf);
 892                         fprintf (stderr,"Remote: %s:%d\n", inet_ntoa(from.sin_addr), g_ntohs(from.sin_port));
 893 #endif
 894                 }
 895         }
 896         g_strfreev(lines);
 897         return 0;
 898 }