/***************************************************************************** * http.c: HTTP input module ***************************************************************************** * Copyright (C) 2001-2008 VLC authors and VideoLAN * $Id$ * * Authors: Laurent Aimar * Christophe Massiot * Rémi Denis-Courmont * Antoine Cellerier * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_ZLIB_H # include #endif #include #include /***************************************************************************** * Module descriptor *****************************************************************************/ static int Open ( vlc_object_t * ); static void Close( vlc_object_t * ); #define PROXY_TEXT N_("HTTP proxy") #define PROXY_LONGTEXT N_( \ "HTTP proxy to be used It must be of the form " \ "http://[user@]myproxy.mydomain:myport/ ; " \ "if empty, the http_proxy environment variable will be tried." ) #define PROXY_PASS_TEXT N_("HTTP proxy password") #define PROXY_PASS_LONGTEXT N_( \ "If your HTTP proxy requires a password, set it here." ) #define RECONNECT_TEXT N_("Auto re-connect") #define RECONNECT_LONGTEXT N_( \ "Automatically try to reconnect to the stream in case of a sudden " \ "disconnect." ) #define CONTINUOUS_TEXT N_("Continuous stream") #define CONTINUOUS_LONGTEXT N_("Read a file that is " \ "being constantly updated (for example, a JPG file on a server). " \ "You should not globally enable this option as it will break all other " \ "types of HTTP streams." ) #define FORWARD_COOKIES_TEXT N_("Forward Cookies") #define FORWARD_COOKIES_LONGTEXT N_("Forward Cookies across http redirections.") #define REFERER_TEXT N_("HTTP referer value") #define REFERER_LONGTEXT N_("Customize the HTTP referer, simulating a previous document") #define UA_TEXT N_("User Agent") #define UA_LONGTEXT N_("The name and version of the program will be " \ "provided to the HTTP server. They must be separated by a forward " \ "slash, e.g. FooBar/1.2.3. This option can only be specified per input " \ "item, not globally.") vlc_module_begin () set_description( N_("HTTP input") ) set_capability( "access", 0 ) set_shortname( N_( "HTTP(S)" ) ) set_category( CAT_INPUT ) set_subcategory( SUBCAT_INPUT_ACCESS ) add_string( "http-proxy", NULL, PROXY_TEXT, PROXY_LONGTEXT, false ) add_password( "http-proxy-pwd", NULL, PROXY_PASS_TEXT, PROXY_PASS_LONGTEXT, false ) add_obsolete_bool( "http-use-IE-proxy" ) add_string( "http-referrer", NULL, REFERER_TEXT, REFERER_LONGTEXT, false ) change_safe() add_string( "http-user-agent", NULL, UA_TEXT, UA_LONGTEXT, false ) change_safe() change_private() add_bool( "http-reconnect", false, RECONNECT_TEXT, RECONNECT_LONGTEXT, true ) add_bool( "http-continuous", false, CONTINUOUS_TEXT, CONTINUOUS_LONGTEXT, true ) change_safe() add_bool( "http-forward-cookies", true, FORWARD_COOKIES_TEXT, FORWARD_COOKIES_LONGTEXT, true ) /* 'itpc' = iTunes Podcast */ add_shortcut( "http", "https", "unsv", "itpc", "icyx" ) set_callbacks( Open, Close ) vlc_module_end () /***************************************************************************** * Local prototypes *****************************************************************************/ struct access_sys_t { int fd; bool b_error; vlc_tls_creds_t *p_creds; vlc_tls_t *p_tls; v_socket_t *p_vs; /* From uri */ vlc_url_t url; char *psz_user_agent; char *psz_referrer; http_auth_t auth; /* Proxy */ bool b_proxy; vlc_url_t proxy; http_auth_t proxy_auth; char *psz_proxy_passbuf; /* */ int i_code; const char *psz_protocol; int i_version; char *psz_mime; char *psz_pragma; char *psz_location; bool b_mms; bool b_icecast; #ifdef HAVE_ZLIB_H bool b_compressed; struct { z_stream stream; uint8_t *p_buffer; } inflate; #endif bool b_chunked; int64_t i_chunk; int i_icy_meta; uint64_t i_icy_offset; char *psz_icy_name; char *psz_icy_genre; char *psz_icy_title; uint64_t i_remaining; uint64_t size; bool b_seekable; bool b_reconnect; bool b_continuous; bool b_pace_control; bool b_persist; bool b_has_size; vlc_http_cookie_jar_t * cookies; }; /* */ static int OpenWithCookies( vlc_object_t *p_this, const char *psz_access, unsigned i_redirect, vlc_http_cookie_jar_t *cookies ); /* */ static ssize_t Read( access_t *, uint8_t *, size_t ); static ssize_t ReadCompressed( access_t *, uint8_t *, size_t ); static int Seek( access_t *, uint64_t ); static int Control( access_t *, int, va_list ); /* */ static int Connect( access_t *, uint64_t ); static int Request( access_t *p_access, uint64_t i_tell ); static void Disconnect( access_t * ); static void AuthReply( access_t *p_acces, const char *psz_prefix, vlc_url_t *p_url, http_auth_t *p_auth ); static int AuthCheckReply( access_t *p_access, const char *psz_header, vlc_url_t *p_url, http_auth_t *p_auth ); /***************************************************************************** * Open: *****************************************************************************/ static int Open( vlc_object_t *p_this ) { access_t *p_access = (access_t*)p_this; return OpenWithCookies( p_this, p_access->psz_access, 5, NULL ); } /** * Open the given url using the given cookies * @param p_this: the vlc object * @psz_access: the acces to use (http, https, ...) (this value must be used * instead of p_access->psz_access) * @i_redirect: number of redirections remaining * @cookies: the available cookies * @return vlc error codes */ static int OpenWithCookies( vlc_object_t *p_this, const char *psz_access, unsigned i_redirect, vlc_http_cookie_jar_t *cookies ) { access_t *p_access = (access_t*)p_this; access_sys_t *p_sys; char *psz, *p; /* Set up p_access */ STANDARD_READ_ACCESS_INIT; #ifdef HAVE_ZLIB_H p_access->pf_read = ReadCompressed; #endif p_sys->fd = -1; p_sys->b_proxy = false; p_sys->psz_proxy_passbuf = NULL; p_sys->i_version = 1; p_sys->b_seekable = true; p_sys->psz_mime = NULL; p_sys->psz_pragma = NULL; p_sys->b_mms = false; p_sys->b_icecast = false; p_sys->psz_location = NULL; p_sys->psz_user_agent = NULL; p_sys->psz_referrer = NULL; p_sys->b_pace_control = true; #ifdef HAVE_ZLIB_H p_sys->b_compressed = false; /* 15 is the max windowBits, +32 to enable optional gzip decoding */ if( inflateInit2( &p_sys->inflate.stream, 32+15 ) != Z_OK ) msg_Warn( p_access, "Error during zlib initialisation: %s", p_sys->inflate.stream.msg ); if( zlibCompileFlags() & (1<<17) ) msg_Warn( p_access, "Your zlib was compiled without gzip support." ); p_sys->inflate.p_buffer = NULL; #endif p_sys->p_tls = NULL; p_sys->p_vs = NULL; p_sys->i_icy_meta = 0; p_sys->i_icy_offset = 0; p_sys->psz_icy_name = NULL; p_sys->psz_icy_genre = NULL; p_sys->psz_icy_title = NULL; p_sys->i_remaining = 0; p_sys->b_persist = false; p_sys->b_has_size = false; p_sys->size = 0; p_access->info.i_pos = 0; p_access->info.b_eof = false; /* Only forward an store cookies if the corresponding option is activated */ if( var_CreateGetBool( p_access, "http-forward-cookies" ) ) p_sys->cookies = (cookies != NULL) ? cookies : vlc_http_cookies_new(); else p_sys->cookies = NULL; http_auth_Init( &p_sys->auth ); http_auth_Init( &p_sys->proxy_auth ); /* Parse URI - remove spaces */ p = psz = strdup( p_access->psz_location ); while( (p = strchr( p, ' ' )) != NULL ) *p = '+'; vlc_UrlParse( &p_sys->url, psz, 0 ); free( psz ); if( p_sys->url.psz_host == NULL || *p_sys->url.psz_host == '\0' ) { msg_Warn( p_access, "invalid host" ); goto error; } if( !strncmp( psz_access, "https", 5 ) ) { /* HTTP over SSL */ p_sys->p_creds = vlc_tls_ClientCreate( p_this ); if( p_sys->p_creds == NULL ) goto error; if( p_sys->url.i_port <= 0 ) p_sys->url.i_port = 443; } else { if( p_sys->url.i_port <= 0 ) p_sys->url.i_port = 80; } /* Determine the HTTP user agent */ /* See RFC2616 §2.2 token and comment definition, and §3.8 and * §14.43 user-agent header */ p_sys->psz_user_agent = var_InheritString( p_access, "http-user-agent" ); if (p_sys->psz_user_agent) { unsigned comment_level = 0; for( char *p = p_sys->psz_user_agent; *p; p++ ) { uint8_t c = *p; if (comment_level == 0) { if( c < 32 || strchr( ")<>@,;:\\\"[]?={}", c ) ) *p = '_'; /* remove potentially harmful characters */ } else { if (c == ')') comment_level--; else if( c < 32 && strchr( "\t\r\n", c ) == NULL) *p = '_'; /* remove potentially harmful characters */ } if (c == '(') { if (comment_level == UINT_MAX) break; comment_level++; } } /* truncate evil unclosed comments */ if (comment_level > 0) { char *p = strchr(p_sys->psz_user_agent, '('); *p = '\0'; } } /* HTTP referrer */ p_sys->psz_referrer = var_InheritString( p_access, "http-referrer" ); /* Check proxy */ psz = var_InheritString( p_access, "http-proxy" ); if( psz == NULL ) { char *url; if (likely(asprintf(&url, "%s://%s", psz_access, p_access->psz_location) != -1)) { msg_Dbg(p_access, "querying proxy for %s", url); psz = vlc_getProxyUrl(url); free(url); } if (psz != NULL) msg_Dbg(p_access, "proxy: %s", psz); else msg_Dbg(p_access, "no proxy"); } if( psz != NULL ) { p_sys->b_proxy = true; vlc_UrlParse( &p_sys->proxy, psz, 0 ); free( psz ); psz = var_InheritString( p_access, "http-proxy-pwd" ); if( psz ) p_sys->proxy.psz_password = p_sys->psz_proxy_passbuf = psz; if( p_sys->proxy.psz_host == NULL || *p_sys->proxy.psz_host == '\0' ) { msg_Warn( p_access, "invalid proxy host" ); goto error; } if( p_sys->proxy.i_port <= 0 ) { p_sys->proxy.i_port = 80; } } msg_Dbg( p_access, "http: server='%s' port=%d file='%s'", p_sys->url.psz_host, p_sys->url.i_port, p_sys->url.psz_path != NULL ? p_sys->url.psz_path : "" ); if( p_sys->b_proxy ) { msg_Dbg( p_access, " proxy %s:%d", p_sys->proxy.psz_host, p_sys->proxy.i_port ); } if( p_sys->url.psz_username && *p_sys->url.psz_username ) { msg_Dbg( p_access, " user='%s'", p_sys->url.psz_username ); } p_sys->b_reconnect = var_InheritBool( p_access, "http-reconnect" ); p_sys->b_continuous = var_InheritBool( p_access, "http-continuous" ); connect: /* Connect */ switch( Connect( p_access, 0 ) ) { case -1: goto error; case -2: /* Retry with http 1.0 */ msg_Dbg( p_access, "switching to HTTP version 1.0" ); p_sys->i_version = 0; p_sys->b_seekable = false; if( !vlc_object_alive (p_access) || Connect( p_access, 0 ) ) goto error; case 0: break; default: assert(0); } if( p_sys->i_code == 401 ) { if( p_sys->auth.psz_realm == NULL ) { msg_Err( p_access, "authentication failed without realm" ); goto error; } char *psz_login, *psz_password; /* FIXME ? */ if( p_sys->url.psz_username && p_sys->url.psz_password && p_sys->auth.psz_nonce && p_sys->auth.i_nonce == 0 ) { Disconnect( p_access ); goto connect; } msg_Dbg( p_access, "authentication failed for realm %s", p_sys->auth.psz_realm ); dialog_Login( p_access, &psz_login, &psz_password, _("HTTP authentication"), _("Please enter a valid login name and a password for realm %s."), p_sys->auth.psz_realm ); if( psz_login != NULL && psz_password != NULL ) { msg_Dbg( p_access, "retrying with user=%s", psz_login ); p_sys->url.psz_username = psz_login; p_sys->url.psz_password = psz_password; Disconnect( p_access ); goto connect; } else { free( psz_login ); free( psz_password ); goto error; } } if( ( p_sys->i_code == 301 || p_sys->i_code == 302 || p_sys->i_code == 303 || p_sys->i_code == 307 ) && p_sys->psz_location && *p_sys->psz_location ) { msg_Dbg( p_access, "redirection to %s", p_sys->psz_location ); /* Check the number of redirection already done */ if( i_redirect == 0 ) { msg_Err( p_access, "Too many redirection: break potential infinite" "loop" ); goto error; } const char *psz_protocol; if( !strncmp( p_sys->psz_location, "http://", 7 ) ) psz_protocol = "http"; else if( !strncmp( p_sys->psz_location, "https://", 8 ) ) psz_protocol = "https"; else { /* Do not accept redirection outside of HTTP */ msg_Err( p_access, "unsupported redirection ignored" ); goto error; } free( p_access->psz_location ); p_access->psz_location = strdup( p_sys->psz_location + strlen( psz_protocol ) + 3 ); /* Clean up current Open() run */ vlc_UrlClean( &p_sys->url ); http_auth_Reset( &p_sys->auth ); vlc_UrlClean( &p_sys->proxy ); free( p_sys->psz_proxy_passbuf ); http_auth_Reset( &p_sys->proxy_auth ); free( p_sys->psz_mime ); free( p_sys->psz_pragma ); free( p_sys->psz_location ); free( p_sys->psz_user_agent ); free( p_sys->psz_referrer ); Disconnect( p_access ); vlc_tls_Delete( p_sys->p_creds ); cookies = p_sys->cookies; #ifdef HAVE_ZLIB_H inflateEnd( &p_sys->inflate.stream ); #endif free( p_sys ); /* Do new Open() run with new data */ return OpenWithCookies( p_this, psz_protocol, i_redirect - 1, cookies ); } if( p_sys->b_mms ) { msg_Dbg( p_access, "this is actually a live mms server, BAIL" ); goto error; } if( !strcmp( p_sys->psz_protocol, "ICY" ) || p_sys->b_icecast ) { if( p_sys->psz_mime && strcasecmp( p_sys->psz_mime, "application/ogg" ) ) { if( !strcasecmp( p_sys->psz_mime, "video/nsv" ) || !strcasecmp( p_sys->psz_mime, "video/nsa" ) ) { free( p_access->psz_demux ); p_access->psz_demux = strdup( "nsv" ); } else if( !strcasecmp( p_sys->psz_mime, "audio/aac" ) || !strcasecmp( p_sys->psz_mime, "audio/aacp" ) ) { free( p_access->psz_demux ); p_access->psz_demux = strdup( "m4a" ); } else if( !strcasecmp( p_sys->psz_mime, "audio/mpeg" ) ) { free( p_access->psz_demux ); p_access->psz_demux = strdup( "mp3" ); } msg_Info( p_access, "Raw-audio server found, %s demuxer selected", p_access->psz_demux ); #if 0 /* Doesn't work really well because of the pre-buffering in * shoutcast servers (the buffer content will be sent as fast as * possible). */ p_sys->b_pace_control = false; #endif } else if( !p_sys->psz_mime ) { free( p_access->psz_demux ); /* Shoutcast */ p_access->psz_demux = strdup( "mp3" ); } /* else probably Ogg Vorbis */ } else if( !strcasecmp( psz_access, "unsv" ) && p_sys->psz_mime && !strcasecmp( p_sys->psz_mime, "misc/ultravox" ) ) { free( p_access->psz_demux ); /* Grrrr! detect ultravox server and force NSV demuxer */ p_access->psz_demux = strdup( "nsv" ); } else if( !strcmp( psz_access, "itpc" ) ) { free( p_access->psz_demux ); p_access->psz_demux = strdup( "podcast" ); } if( p_sys->b_reconnect ) msg_Dbg( p_access, "auto re-connect enabled" ); return VLC_SUCCESS; error: vlc_UrlClean( &p_sys->url ); vlc_UrlClean( &p_sys->proxy ); free( p_sys->psz_proxy_passbuf ); free( p_sys->psz_mime ); free( p_sys->psz_pragma ); free( p_sys->psz_location ); free( p_sys->psz_user_agent ); free( p_sys->psz_referrer ); Disconnect( p_access ); vlc_tls_Delete( p_sys->p_creds ); vlc_http_cookies_destroy( p_sys->cookies ); #ifdef HAVE_ZLIB_H inflateEnd( &p_sys->inflate.stream ); #endif free( p_sys ); return VLC_EGENERIC; } /***************************************************************************** * Close: *****************************************************************************/ static void Close( vlc_object_t *p_this ) { access_t *p_access = (access_t*)p_this; access_sys_t *p_sys = p_access->p_sys; vlc_UrlClean( &p_sys->url ); http_auth_Reset( &p_sys->auth ); vlc_UrlClean( &p_sys->proxy ); http_auth_Reset( &p_sys->proxy_auth ); free( p_sys->psz_mime ); free( p_sys->psz_pragma ); free( p_sys->psz_location ); free( p_sys->psz_icy_name ); free( p_sys->psz_icy_genre ); free( p_sys->psz_icy_title ); free( p_sys->psz_user_agent ); free( p_sys->psz_referrer ); Disconnect( p_access ); vlc_tls_Delete( p_sys->p_creds ); vlc_http_cookies_destroy( p_sys->cookies ); #ifdef HAVE_ZLIB_H inflateEnd( &p_sys->inflate.stream ); free( p_sys->inflate.p_buffer ); #endif free( p_sys ); } /* Read data from the socket taking care of chunked transfer if needed */ static int ReadData( access_t *p_access, int *pi_read, uint8_t *p_buffer, size_t i_len ) { access_sys_t *p_sys = p_access->p_sys; if( p_sys->b_chunked ) { if( p_sys->i_chunk < 0 ) return VLC_EGENERIC; if( p_sys->i_chunk <= 0 ) { char *psz = net_Gets( p_access, p_sys->fd, p_sys->p_vs ); /* read the chunk header */ if( psz == NULL ) { /* fatal error - end of file */ msg_Dbg( p_access, "failed reading chunk-header line" ); return VLC_EGENERIC; } p_sys->i_chunk = strtoll( psz, NULL, 16 ); free( psz ); if( p_sys->i_chunk <= 0 ) /* eof */ { p_sys->i_chunk = -1; return VLC_EGENERIC; } } if( i_len > p_sys->i_chunk ) i_len = p_sys->i_chunk; } *pi_read = net_Read( p_access, p_sys->fd, p_sys->p_vs, p_buffer, i_len, false ); if( *pi_read <= 0 ) return VLC_SUCCESS; if( p_sys->b_chunked ) { p_sys->i_chunk -= *pi_read; if( p_sys->i_chunk <= 0 ) { /* read the empty line */ char *psz = net_Gets( p_access, p_sys->fd, p_sys->p_vs ); free( psz ); } } return VLC_SUCCESS; } /***************************************************************************** * Read: Read up to i_len bytes from the http connection and place in * p_buffer. Return the actual number of bytes read *****************************************************************************/ static int ReadICYMeta( access_t *p_access ); static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len ) { access_sys_t *p_sys = p_access->p_sys; int i_read; if( p_sys->fd == -1 ) goto fatal; if( p_sys->b_has_size ) { /* Remaining bytes in the file */ uint64_t remainder = p_sys->size - p_access->info.i_pos; if( remainder < i_len ) i_len = remainder; /* Remaining bytes in the response */ if( p_sys->i_remaining < i_len ) i_len = p_sys->i_remaining; } if( i_len == 0 ) goto fatal; if( p_sys->i_icy_meta > 0 && p_access->info.i_pos - p_sys->i_icy_offset > 0 ) { int64_t i_next = p_sys->i_icy_meta - (p_access->info.i_pos - p_sys->i_icy_offset ) % p_sys->i_icy_meta; if( i_next == p_sys->i_icy_meta ) { if( ReadICYMeta( p_access ) ) goto fatal; } if( i_len > i_next ) i_len = i_next; } if( ReadData( p_access, &i_read, p_buffer, i_len ) ) goto fatal; if( i_read <= 0 ) { /* * I very much doubt that this will work. * If i_read == 0, the connection *IS* dead, so the only * sensible thing to do is Disconnect() and then retry. * Otherwise, I got recv() completely wrong. -- Courmisch */ if( p_sys->b_continuous ) { Request( p_access, 0 ); p_sys->b_continuous = false; i_read = Read( p_access, p_buffer, i_len ); p_sys->b_continuous = true; } Disconnect( p_access ); if( p_sys->b_reconnect && vlc_object_alive( p_access ) ) { msg_Dbg( p_access, "got disconnected, trying to reconnect" ); if( Connect( p_access, p_access->info.i_pos ) ) { msg_Dbg( p_access, "reconnection failed" ); } else { p_sys->b_reconnect = false; i_read = Read( p_access, p_buffer, i_len ); p_sys->b_reconnect = true; return i_read; } } if( i_read <= 0 ) { if( i_read < 0 ) p_sys->b_error = true; goto fatal; } } assert( i_read >= 0 ); p_access->info.i_pos += i_read; if( p_sys->b_has_size ) { assert( p_access->info.i_pos <= p_sys->size ); assert( (unsigned)i_read <= p_sys->i_remaining ); p_sys->i_remaining -= i_read; } return i_read; fatal: p_access->info.b_eof = true; return 0; } static int ReadICYMeta( access_t *p_access ) { access_sys_t *p_sys = p_access->p_sys; uint8_t buffer; char *p, *psz_meta; int i_read; /* Read meta data length */ if( ReadData( p_access, &i_read, &buffer, 1 ) ) return VLC_EGENERIC; if( i_read != 1 ) return VLC_EGENERIC; const int i_size = buffer << 4; /* msg_Dbg( p_access, "ICY meta size=%u", i_size); */ psz_meta = malloc( i_size + 1 ); for( i_read = 0; i_read < i_size; ) { int i_tmp; if( ReadData( p_access, &i_tmp, (uint8_t *)&psz_meta[i_read], i_size - i_read ) || i_tmp <= 0 ) { free( psz_meta ); return VLC_EGENERIC; } i_read += i_tmp; } psz_meta[i_read] = '\0'; /* Just in case */ /* msg_Dbg( p_access, "icy-meta=%s", psz_meta ); */ /* Now parse the meta */ /* Look for StreamTitle= */ p = strcasestr( (char *)psz_meta, "StreamTitle=" ); if( p ) { p += strlen( "StreamTitle=" ); if( *p == '\'' || *p == '"' ) { char closing[] = { p[0], ';', '\0' }; char *psz = strstr( &p[1], closing ); if( !psz ) psz = strchr( &p[1], ';' ); if( psz ) *psz = '\0'; } else { char *psz = strchr( &p[1], ';' ); if( psz ) *psz = '\0'; } if( !p_sys->psz_icy_title || strcmp( p_sys->psz_icy_title, &p[1] ) ) { free( p_sys->psz_icy_title ); char *psz_tmp = strdup( &p[1] ); p_sys->psz_icy_title = EnsureUTF8( psz_tmp ); if( !p_sys->psz_icy_title ) free( psz_tmp ); msg_Dbg( p_access, "New Icy-Title=%s", p_sys->psz_icy_title ); input_thread_t *p_input = access_GetParentInput( p_access ); if( p_input ) { input_item_t *p_input_item = input_GetItem( p_access->p_input ); if( p_input_item ) input_item_SetMeta( p_input_item, vlc_meta_NowPlaying, p_sys->psz_icy_title ); vlc_object_release( p_input ); } } } free( psz_meta ); return VLC_SUCCESS; } #ifdef HAVE_ZLIB_H static ssize_t ReadCompressed( access_t *p_access, uint8_t *p_buffer, size_t i_len ) { access_sys_t *p_sys = p_access->p_sys; if( p_sys->b_compressed ) { int i_ret; if( !p_sys->inflate.p_buffer ) p_sys->inflate.p_buffer = malloc( 256 * 1024 ); if( p_sys->inflate.stream.avail_in == 0 ) { ssize_t i_read = Read( p_access, p_sys->inflate.p_buffer, 256 * 1024 ); if( i_read <= 0 ) return i_read; p_sys->inflate.stream.next_in = p_sys->inflate.p_buffer; p_sys->inflate.stream.avail_in = i_read; } p_sys->inflate.stream.avail_out = i_len; p_sys->inflate.stream.next_out = p_buffer; i_ret = inflate( &p_sys->inflate.stream, Z_SYNC_FLUSH ); if ( i_ret != Z_OK && i_ret != Z_STREAM_END ) msg_Warn( p_access, "inflate return value: %d, %s", i_ret, p_sys->inflate.stream.msg ); return i_len - p_sys->inflate.stream.avail_out; } else { return Read( p_access, p_buffer, i_len ); } } #endif /***************************************************************************** * Seek: close and re-open a connection at the right place *****************************************************************************/ static int Seek( access_t *p_access, uint64_t i_pos ) { access_sys_t *p_sys = p_access->p_sys; msg_Dbg( p_access, "trying to seek to %"PRId64, i_pos ); Disconnect( p_access ); if( p_sys->size && i_pos >= p_sys->size ) { msg_Err( p_access, "seek too far" ); int retval = Seek( p_access, p_sys->size - 1 ); if( retval == VLC_SUCCESS ) { uint8_t p_buffer[2]; Read( p_access, p_buffer, 1); p_access->info.b_eof = false; } return retval; } if( Connect( p_access, i_pos ) ) { msg_Err( p_access, "seek failed" ); p_access->info.b_eof = true; return VLC_EGENERIC; } return VLC_SUCCESS; } /***************************************************************************** * Control: *****************************************************************************/ static int Control( access_t *p_access, int i_query, va_list args ) { access_sys_t *p_sys = p_access->p_sys; bool *pb_bool; int64_t *pi_64; switch( i_query ) { /* */ case ACCESS_CAN_SEEK: pb_bool = (bool*)va_arg( args, bool* ); *pb_bool = p_sys->b_seekable; break; case ACCESS_CAN_FASTSEEK: pb_bool = (bool*)va_arg( args, bool* ); *pb_bool = false; break; case ACCESS_CAN_PAUSE: case ACCESS_CAN_CONTROL_PACE: pb_bool = (bool*)va_arg( args, bool* ); #if 0 /* Disable for now until we have a clock synchro algo * which works with something else than MPEG over UDP */ *pb_bool = p_sys->b_pace_control; #endif *pb_bool = true; break; /* */ case ACCESS_GET_PTS_DELAY: pi_64 = (int64_t*)va_arg( args, int64_t * ); *pi_64 = INT64_C(1000) * var_InheritInteger( p_access, "network-caching" ); break; case ACCESS_GET_SIZE: pi_64 = (int64_t*)va_arg( args, int64_t * ); *pi_64 = p_sys->size; break; /* */ case ACCESS_SET_PAUSE_STATE: break; case ACCESS_GET_CONTENT_TYPE: *va_arg( args, char ** ) = p_sys->psz_mime ? strdup( p_sys->psz_mime ) : NULL; break; default: return VLC_EGENERIC; } return VLC_SUCCESS; } /***************************************************************************** * Connect: *****************************************************************************/ static int Connect( access_t *p_access, uint64_t i_tell ) { access_sys_t *p_sys = p_access->p_sys; vlc_url_t srv = p_sys->b_proxy ? p_sys->proxy : p_sys->url; /* Clean info */ free( p_sys->psz_location ); free( p_sys->psz_mime ); free( p_sys->psz_pragma ); free( p_sys->psz_icy_genre ); free( p_sys->psz_icy_name ); free( p_sys->psz_icy_title ); p_sys->psz_location = NULL; p_sys->psz_mime = NULL; p_sys->psz_pragma = NULL; p_sys->b_mms = false; p_sys->b_chunked = false; p_sys->i_chunk = 0; p_sys->i_icy_meta = 0; p_sys->i_icy_offset = i_tell; p_sys->psz_icy_name = NULL; p_sys->psz_icy_genre = NULL; p_sys->psz_icy_title = NULL; p_sys->i_remaining = 0; p_sys->b_persist = false; p_sys->b_has_size = false; p_sys->size = 0; p_access->info.i_pos = i_tell; p_access->info.b_eof = false; /* Open connection */ assert( p_sys->fd == -1 ); /* No open sockets (leaking fds is BAD) */ p_sys->fd = net_ConnectTCP( p_access, srv.psz_host, srv.i_port ); if( p_sys->fd == -1 ) { msg_Err( p_access, "cannot connect to %s:%d", srv.psz_host, srv.i_port ); return -1; } setsockopt (p_sys->fd, SOL_SOCKET, SO_KEEPALIVE, &(int){ 1 }, sizeof (int)); /* Initialize TLS/SSL session */ if( p_sys->p_creds != NULL ) { /* CONNECT to establish TLS tunnel through HTTP proxy */ if( p_sys->b_proxy ) { char *psz; unsigned i_status = 0; if( p_sys->i_version == 0 ) { /* CONNECT is not in HTTP/1.0 */ Disconnect( p_access ); return -1; } net_Printf( p_access, p_sys->fd, NULL, "CONNECT %s:%d HTTP/1.%d\r\nHost: %s:%d\r\n\r\n", p_sys->url.psz_host, p_sys->url.i_port, p_sys->i_version, p_sys->url.psz_host, p_sys->url.i_port); psz = net_Gets( p_access, p_sys->fd, NULL ); if( psz == NULL ) { msg_Err( p_access, "cannot establish HTTP/TLS tunnel" ); Disconnect( p_access ); return -1; } sscanf( psz, "HTTP/%*u.%*u %3u", &i_status ); free( psz ); if( ( i_status / 100 ) != 2 ) { msg_Err( p_access, "HTTP/TLS tunnel through proxy denied" ); Disconnect( p_access ); return -1; } do { psz = net_Gets( p_access, p_sys->fd, NULL ); if( psz == NULL ) { msg_Err( p_access, "HTTP proxy connection failed" ); Disconnect( p_access ); return -1; } if( *psz == '\0' ) i_status = 0; free( psz ); if( !vlc_object_alive (p_access) || p_sys->b_error ) { Disconnect( p_access ); return -1; } } while( i_status ); } /* TLS/SSL handshake */ const char *alpn[] = { "http/1.1", NULL }; p_sys->p_tls = vlc_tls_ClientSessionCreate( p_sys->p_creds, p_sys->fd, p_sys->url.psz_host, "https", p_sys->i_version ? alpn : NULL, NULL ); if( p_sys->p_tls == NULL ) { msg_Err( p_access, "cannot establish HTTP/TLS session" ); Disconnect( p_access ); return -1; } p_sys->p_vs = &p_sys->p_tls->sock; } return Request( p_access, i_tell ) ? -2 : 0; } static int Request( access_t *p_access, uint64_t i_tell ) { access_sys_t *p_sys = p_access->p_sys; char *psz ; v_socket_t *pvs = p_sys->p_vs; p_sys->b_persist = false; p_sys->i_remaining = 0; const char *psz_path = p_sys->url.psz_path; if( !psz_path || !*psz_path ) psz_path = "/"; if( p_sys->b_proxy && pvs == NULL ) net_Printf( p_access, p_sys->fd, NULL, "GET http://%s:%d%s HTTP/1.%d\r\n", p_sys->url.psz_host, p_sys->url.i_port, psz_path, p_sys->i_version ); else net_Printf( p_access, p_sys->fd, pvs, "GET %s HTTP/1.%d\r\n", psz_path, p_sys->i_version ); if( p_sys->url.i_port != (pvs ? 443 : 80) ) net_Printf( p_access, p_sys->fd, pvs, "Host: %s:%d\r\n", p_sys->url.psz_host, p_sys->url.i_port ); else net_Printf( p_access, p_sys->fd, pvs, "Host: %s\r\n", p_sys->url.psz_host ); /* User Agent */ net_Printf( p_access, p_sys->fd, pvs, "User-Agent: %s\r\n", p_sys->psz_user_agent ); /* Referrer */ if (p_sys->psz_referrer) { net_Printf( p_access, p_sys->fd, pvs, "Referer: %s\r\n", p_sys->psz_referrer); } /* Offset */ if( p_sys->i_version == 1 && ! p_sys->b_continuous ) { p_sys->b_persist = true; net_Printf( p_access, p_sys->fd, pvs, "Range: bytes=%"PRIu64"-\r\n", i_tell ); net_Printf( p_access, p_sys->fd, pvs, "Connection: close\r\n" ); } /* Cookies */ if( p_sys->cookies ) { char * psz_cookiestring = vlc_http_cookies_for_url( p_sys->cookies, &p_sys->url ); if ( psz_cookiestring ) { msg_Dbg( p_access, "Sending Cookie %s", psz_cookiestring ); if( net_Printf( p_access, p_sys->fd, pvs, "Cookie: %s\r\n", psz_cookiestring ) < 0 ) msg_Err( p_access, "failed to send Cookie" ); free( psz_cookiestring ); } } /* Authentication */ if( p_sys->url.psz_username && p_sys->url.psz_password ) AuthReply( p_access, "", &p_sys->url, &p_sys->auth ); /* Proxy Authentication */ if( p_sys->proxy.psz_username && p_sys->proxy.psz_password ) AuthReply( p_access, "Proxy-", &p_sys->proxy, &p_sys->proxy_auth ); /* ICY meta data request */ net_Printf( p_access, p_sys->fd, pvs, "Icy-MetaData: 1\r\n" ); if( net_Printf( p_access, p_sys->fd, pvs, "\r\n" ) < 0 ) { msg_Err( p_access, "failed to send request" ); Disconnect( p_access ); return VLC_EGENERIC; } /* Read Answer */ if( ( psz = net_Gets( p_access, p_sys->fd, pvs ) ) == NULL ) { msg_Err( p_access, "failed to read answer" ); goto error; } if( !strncmp( psz, "HTTP/1.", 7 ) ) { p_sys->psz_protocol = "HTTP"; p_sys->i_code = atoi( &psz[9] ); } else if( !strncmp( psz, "ICY", 3 ) ) { p_sys->psz_protocol = "ICY"; p_sys->i_code = atoi( &psz[4] ); p_sys->b_reconnect = true; } else { msg_Err( p_access, "invalid HTTP reply '%s'", psz ); free( psz ); goto error; } msg_Dbg( p_access, "protocol '%s' answer code %d", p_sys->psz_protocol, p_sys->i_code ); if( !strcmp( p_sys->psz_protocol, "ICY" ) ) { p_sys->b_seekable = false; } if( p_sys->i_code != 206 && p_sys->i_code != 401 ) { p_sys->b_seekable = false; } /* Authentication error - We'll have to display the dialog */ if( p_sys->i_code == 401 ) { } /* Other fatal error */ else if( p_sys->i_code >= 400 ) { msg_Err( p_access, "error: %s", psz ); free( psz ); goto error; } free( psz ); for( ;; ) { char *psz = net_Gets( p_access, p_sys->fd, pvs ); char *p; char *p_trailing; if( psz == NULL ) { msg_Err( p_access, "failed to read answer" ); goto error; } if( !vlc_object_alive (p_access) || p_sys->b_error ) { free( psz ); goto error; } /* msg_Dbg( p_input, "Line=%s", psz ); */ if( *psz == '\0' ) { free( psz ); break; } if( ( p = strchr( psz, ':' ) ) == NULL ) { msg_Err( p_access, "malformed header line: %s", psz ); free( psz ); goto error; } *p++ = '\0'; p += strspn( p, " \t" ); /* trim trailing white space */ p_trailing = p + strlen( p ); if( p_trailing > p ) { p_trailing--; while( ( *p_trailing == ' ' || *p_trailing == '\t' ) && p_trailing > p ) { *p_trailing = '\0'; p_trailing--; } } if( !strcasecmp( psz, "Content-Length" ) ) { uint64_t i_size = i_tell + (p_sys->i_remaining = (uint64_t)atoll( p )); if(i_size > p_sys->size) { p_sys->b_has_size = true; p_sys->size = i_size; } msg_Dbg( p_access, "this frame size=%"PRIu64, p_sys->i_remaining ); } else if( !strcasecmp( psz, "Content-Range" ) ) { uint64_t i_ntell = i_tell; uint64_t i_nend = (p_sys->size > 0) ? (p_sys->size - 1) : i_tell; uint64_t i_nsize = p_sys->size; sscanf(p,"bytes %"SCNu64"-%"SCNu64"/%"SCNu64,&i_ntell,&i_nend,&i_nsize); if(i_nend > i_ntell ) { p_access->info.i_pos = i_ntell; p_sys->i_icy_offset = i_ntell; p_sys->i_remaining = i_nend+1-i_ntell; uint64_t i_size = (i_nsize > i_nend) ? i_nsize : (i_nend + 1); if(i_size > p_sys->size) { p_sys->b_has_size = true; p_sys->size = i_size; } msg_Dbg( p_access, "stream size=%"PRIu64",pos=%"PRIu64",remaining=%"PRIu64, i_nsize, i_ntell, p_sys->i_remaining); } } else if( !strcasecmp( psz, "Connection" ) ) { msg_Dbg( p_access, "Connection: %s",p ); int i = -1; sscanf(p, "close%n",&i); if( i >= 0 ) { p_sys->b_persist = false; } } else if( !strcasecmp( psz, "Location" ) ) { char * psz_new_loc; /* This does not follow RFC 2068, but yet if the url is not absolute, * handle it as everyone does. */ if( p[0] == '/' ) { const char *psz_http_ext = p_sys->p_tls ? "s" : "" ; if( p_sys->url.i_port == ( p_sys->p_tls ? 443 : 80 ) ) { if( asprintf(&psz_new_loc, "http%s://%s%s", psz_http_ext, p_sys->url.psz_host, p) < 0 ) goto error; } else { if( asprintf(&psz_new_loc, "http%s://%s:%d%s", psz_http_ext, p_sys->url.psz_host, p_sys->url.i_port, p) < 0 ) goto error; } } else { psz_new_loc = strdup( p ); } free( p_sys->psz_location ); p_sys->psz_location = psz_new_loc; } else if( !strcasecmp( psz, "Content-Type" ) ) { free( p_sys->psz_mime ); p_sys->psz_mime = strdup( p ); msg_Dbg( p_access, "Content-Type: %s", p_sys->psz_mime ); } else if( !strcasecmp( psz, "Content-Encoding" ) ) { msg_Dbg( p_access, "Content-Encoding: %s", p ); if( !strcasecmp( p, "identity" ) ) ; #ifdef HAVE_ZLIB_H else if( !strcasecmp( p, "gzip" ) || !strcasecmp( p, "deflate" ) ) p_sys->b_compressed = true; #endif else msg_Warn( p_access, "Unknown content coding: %s", p ); } else if( !strcasecmp( psz, "Pragma" ) ) { if( !strcasecmp( psz, "Pragma: features" ) ) p_sys->b_mms = true; free( p_sys->psz_pragma ); p_sys->psz_pragma = strdup( p ); msg_Dbg( p_access, "Pragma: %s", p_sys->psz_pragma ); } else if( !strcasecmp( psz, "Server" ) ) { msg_Dbg( p_access, "Server: %s", p ); if( !strncasecmp( p, "Icecast", 7 ) || !strncasecmp( p, "Nanocaster", 10 ) ) { /* Remember if this is Icecast * we need to force demux in this case without breaking * autodetection */ /* Let live 365 streams (nanocaster) piggyback on the icecast * routine. They look very similar */ p_sys->b_reconnect = true; p_sys->b_pace_control = false; p_sys->b_icecast = true; } } else if( !strcasecmp( psz, "Transfer-Encoding" ) ) { msg_Dbg( p_access, "Transfer-Encoding: %s", p ); if( !strncasecmp( p, "chunked", 7 ) ) { p_sys->b_chunked = true; } } else if( !strcasecmp( psz, "Icy-MetaInt" ) ) { msg_Dbg( p_access, "Icy-MetaInt: %s", p ); p_sys->i_icy_meta = atoi( p ); if( p_sys->i_icy_meta < 0 ) p_sys->i_icy_meta = 0; if( p_sys->i_icy_meta > 0 ) p_sys->b_icecast = true; msg_Warn( p_access, "ICY metaint=%d", p_sys->i_icy_meta ); } else if( !strcasecmp( psz, "Icy-Name" ) ) { free( p_sys->psz_icy_name ); char *psz_tmp = strdup( p ); p_sys->psz_icy_name = EnsureUTF8( psz_tmp ); if( !p_sys->psz_icy_name ) free( psz_tmp ); msg_Dbg( p_access, "Icy-Name: %s", p_sys->psz_icy_name ); input_thread_t *p_input = access_GetParentInput( p_access ); if ( p_input ) { input_item_t *p_input_item = input_GetItem( p_access->p_input ); if ( p_input_item ) input_item_SetMeta( p_input_item, vlc_meta_Title, p_sys->psz_icy_name ); vlc_object_release( p_input ); } p_sys->b_icecast = true; /* be on the safeside. set it here as well. */ p_sys->b_reconnect = true; p_sys->b_pace_control = false; } else if( !strcasecmp( psz, "Icy-Genre" ) ) { free( p_sys->psz_icy_genre ); char *psz_tmp = strdup( p ); p_sys->psz_icy_genre = EnsureUTF8( psz_tmp ); if( !p_sys->psz_icy_genre ) free( psz_tmp ); msg_Dbg( p_access, "Icy-Genre: %s", p_sys->psz_icy_genre ); input_thread_t *p_input = access_GetParentInput( p_access ); if( p_input ) { input_item_t *p_input_item = input_GetItem( p_access->p_input ); if( p_input_item ) input_item_SetMeta( p_input_item, vlc_meta_Genre, p_sys->psz_icy_genre ); vlc_object_release( p_input ); } } else if( !strncasecmp( psz, "Icy-Notice", 10 ) ) { msg_Dbg( p_access, "Icy-Notice: %s", p ); } else if( !strncasecmp( psz, "icy-", 4 ) || !strncasecmp( psz, "ice-", 4 ) || !strncasecmp( psz, "x-audiocast", 11 ) ) { msg_Dbg( p_access, "Meta-Info: %s: %s", psz, p ); } else if( !strcasecmp( psz, "Set-Cookie" ) ) { if( p_sys->cookies ) { if ( vlc_http_cookies_append( p_sys->cookies, p, &p_sys->url ) ) msg_Dbg( p_access, "Accepting Cookie: %s", p ); else msg_Dbg( p_access, "Rejected Cookie: %s", p ); } else msg_Dbg( p_access, "We have a Cookie we won't remember: %s", p ); } else if( !strcasecmp( psz, "www-authenticate" ) ) { msg_Dbg( p_access, "Authentication header: %s", p ); http_auth_ParseWwwAuthenticateHeader( VLC_OBJECT(p_access), &p_sys->auth, p ); } else if( !strcasecmp( psz, "proxy-authenticate" ) ) { msg_Dbg( p_access, "Proxy authentication header: %s", p ); http_auth_ParseWwwAuthenticateHeader( VLC_OBJECT(p_access), &p_sys->proxy_auth, p ); } else if( !strcasecmp( psz, "authentication-info" ) ) { msg_Dbg( p_access, "Authentication Info header: %s", p ); if( AuthCheckReply( p_access, p, &p_sys->url, &p_sys->auth ) ) goto error; } else if( !strcasecmp( psz, "proxy-authentication-info" ) ) { msg_Dbg( p_access, "Proxy Authentication Info header: %s", p ); if( AuthCheckReply( p_access, p, &p_sys->proxy, &p_sys->proxy_auth ) ) goto error; } else if( !strcasecmp( psz, "Accept-Ranges" ) ) { if( !strcasecmp( p, "bytes" ) ) p_sys->b_seekable = true; } free( psz ); } /* We close the stream for zero length data, unless of course the * server has already promised to do this for us. */ if( p_sys->b_has_size && p_sys->i_remaining == 0 && p_sys->b_persist ) { Disconnect( p_access ); } return VLC_SUCCESS; error: Disconnect( p_access ); return VLC_EGENERIC; } /***************************************************************************** * Disconnect: *****************************************************************************/ static void Disconnect( access_t *p_access ) { access_sys_t *p_sys = p_access->p_sys; if( p_sys->p_tls != NULL) { vlc_tls_SessionDelete( p_sys->p_tls ); p_sys->p_tls = NULL; p_sys->p_vs = NULL; } if( p_sys->fd != -1) { net_Close(p_sys->fd); p_sys->fd = -1; } } /***************************************************************************** * HTTP authentication *****************************************************************************/ static void AuthReply( access_t *p_access, const char *psz_prefix, vlc_url_t *p_url, http_auth_t *p_auth ) { access_sys_t *p_sys = p_access->p_sys; char *psz_value; psz_value = http_auth_FormatAuthorizationHeader( VLC_OBJECT(p_access), p_auth, "GET", p_url->psz_path, p_url->psz_username, p_url->psz_password ); if ( psz_value == NULL ) return; net_Printf( p_access, p_sys->fd, p_sys->p_vs, "%sAuthorization: %s\r\n", psz_prefix, psz_value ); free( psz_value ); } static int AuthCheckReply( access_t *p_access, const char *psz_header, vlc_url_t *p_url, http_auth_t *p_auth ) { return http_auth_ParseAuthenticationInfoHeader( VLC_OBJECT(p_access), p_auth, psz_header, "", p_url->psz_path, p_url->psz_username, p_url->psz_password ); }