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Data Structures | Macros | Functions | Variables
http.c File Reference
#include "config.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "http.h"
#include "httpauth.h"
#include "internal.h"
#include "network.h"
#include "os_support.h"
#include "url.h"

Go to the source code of this file.

Data Structures

struct  HTTPContext
 

Macros

#define BUFFER_SIZE   MAX_URL_SIZE
 
#define MAX_REDIRECTS   8
 
#define OFFSET(x)   offsetof(HTTPContext, x)
 
#define D   AV_OPT_FLAG_DECODING_PARAM
 
#define E   AV_OPT_FLAG_ENCODING_PARAM
 
#define DEFAULT_USER_AGENT   "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
 
#define HTTP_CLASS(flavor)
 

Functions

static int http_connect (URLContext *h, const char *path, const char *local_path, const char *hoststr, const char *auth, const char *proxyauth, int *new_location)
 
static int http_read_header (URLContext *h, int *new_location)
 
void ff_http_init_auth_state (URLContext *dest, const URLContext *src)
 Initialize the authentication state based on another HTTP URLContext.
 
static int http_open_cnx_internal (URLContext *h, AVDictionary **options)
 
static int http_open_cnx (URLContext *h, AVDictionary **options)
 
int ff_http_do_new_request (URLContext *h, const char *uri)
 Send a new HTTP request, reusing the old connection.
 
int ff_http_averror (int status_code, int default_averror)
 
static int http_listen (URLContext *h, const char *uri, int flags, AVDictionary **options)
 
static int http_open (URLContext *h, const char *uri, int flags, AVDictionary **options)
 
static int http_getc (HTTPContext *s)
 
static int http_get_line (HTTPContext *s, char *line, int line_size)
 
static int check_http_code (URLContext *h, int http_code, const char *end)
 
static int parse_location (HTTPContext *s, const char *p)
 
static void parse_content_range (URLContext *h, const char *p)
 
static int parse_content_encoding (URLContext *h, const char *p)
 
static int parse_icy (HTTPContext *s, const char *tag, const char *p)
 
static int parse_cookie (HTTPContext *s, const char *p, AVDictionary **cookies)
 
static int cookie_string (AVDictionary *dict, char **cookies)
 
static int process_line (URLContext *h, char *line, int line_count, int *new_location)
 
static int get_cookies (HTTPContext *s, char **cookies, const char *path, const char *domain)
 Create a string containing cookie values for use as a HTTP cookie header field value for a particular path and domain from the cookie values stored in the HTTP protocol context.
 
static int has_header (const char *str, const char *header)
 
static int http_buf_read (URLContext *h, uint8_t *buf, int size)
 
static int64_t http_seek_internal (URLContext *h, int64_t off, int whence, int force_reconnect)
 
static int http_read_stream (URLContext *h, uint8_t *buf, int size)
 
static int http_read_stream_all (URLContext *h, uint8_t *buf, int size)
 
static void update_metadata (HTTPContext *s, char *data)
 
static int store_icy (URLContext *h, int size)
 
static int http_read (URLContext *h, uint8_t *buf, int size)
 
static int http_write (URLContext *h, const uint8_t *buf, int size)
 
static int http_shutdown (URLContext *h, int flags)
 
static int http_close (URLContext *h)
 
static int64_t http_seek (URLContext *h, int64_t off, int whence)
 
static int http_get_file_handle (URLContext *h)
 

Variables

static const AVOption options []
 

Macro Definition Documentation

#define BUFFER_SIZE   MAX_URL_SIZE

Definition at line 45 of file http.c.

Referenced by http_getc(), and http_seek_internal().

#define MAX_REDIRECTS   8

Definition at line 46 of file http.c.

Referenced by http_open_cnx().

#define OFFSET (   x)    offsetof(HTTPContext, x)

Definition at line 102 of file http.c.

Definition at line 103 of file http.c.

Definition at line 104 of file http.c.

#define DEFAULT_USER_AGENT   "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)

Definition at line 105 of file http.c.

#define HTTP_CLASS (   flavor)
Value:
static const AVClass flavor ## _context_class = { \
.class_name = # flavor, \
.item_name = av_default_item_name, \
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \
}

Definition at line 1268 of file http.c.

Function Documentation

static int http_connect ( URLContext h,
const char *  path,
const char *  local_path,
const char *  hoststr,
const char *  auth,
const char *  proxyauth,
int *  new_location 
)
static

Definition at line 774 of file http.c.

Referenced by http_open_cnx_internal().

static int http_read_header ( URLContext h,
int *  new_location 
)
static

Definition at line 742 of file http.c.

Referenced by http_connect(), http_listen(), and http_read_stream().

void ff_http_init_auth_state ( URLContext dest,
const URLContext src 
)

Initialize the authentication state based on another HTTP URLContext.

This can be used to pre-initialize the authentication parameters if they are known beforehand, to avoid having to do an initial failing request just to get the parameters.

Parameters
destURL context whose authentication state gets updated
srcURL context whose authentication state gets copied

Definition at line 140 of file http.c.

static int http_open_cnx_internal ( URLContext h,
AVDictionary **  options 
)
static

Definition at line 150 of file http.c.

Referenced by http_open_cnx().

static int http_open_cnx ( URLContext h,
AVDictionary **  options 
)
static

Definition at line 211 of file http.c.

Referenced by ff_http_do_new_request(), http_open(), and http_seek_internal().

int ff_http_do_new_request ( URLContext h,
const char *  uri 
)

Send a new HTTP request, reusing the old connection.

Parameters
hpointer to the resource
uriuri used to perform the request
Returns
a negative value if an error condition occurred, 0 otherwise

Definition at line 267 of file http.c.

Referenced by rtmp_http_send_cmd().

int ff_http_averror ( int  status_code,
int  default_averror 
)

Definition at line 285 of file http.c.

Referenced by check_http_code(), ff_rtsp_averror(), and http_open_cnx().

static int http_listen ( URLContext h,
const char *  uri,
int  flags,
AVDictionary **  options 
)
static

Definition at line 302 of file http.c.

Referenced by http_open().

static int http_open ( URLContext h,
const char *  uri,
int  flags,
AVDictionary **  options 
)
static

Definition at line 332 of file http.c.

static int http_getc ( HTTPContext s)
static

Definition at line 366 of file http.c.

Referenced by http_get_line().

static int http_get_line ( HTTPContext s,
char *  line,
int  line_size 
)
static

Definition at line 383 of file http.c.

Referenced by http_read_header(), and http_read_stream().

static int check_http_code ( URLContext h,
int  http_code,
const char *  end 
)
static

Definition at line 407 of file http.c.

Referenced by process_line().

static int parse_location ( HTTPContext s,
const char *  p 
)
static

Definition at line 422 of file http.c.

Referenced by process_line().

static void parse_content_range ( URLContext h,
const char *  p 
)
static

Definition at line 436 of file http.c.

Referenced by process_line().

static int parse_content_encoding ( URLContext h,
const char *  p 
)
static

Definition at line 451 of file http.c.

Referenced by process_line().

static int parse_icy ( HTTPContext s,
const char *  tag,
const char *  p 
)
static

Definition at line 485 of file http.c.

Referenced by process_line().

static int parse_cookie ( HTTPContext s,
const char *  p,
AVDictionary **  cookies 
)
static

Definition at line 507 of file http.c.

Referenced by get_cookies(), and process_line().

static int cookie_string ( AVDictionary dict,
char **  cookies 
)
static

Definition at line 521 of file http.c.

Referenced by http_read_header().

static int process_line ( URLContext h,
char *  line,
int  line_count,
int *  new_location 
)
static

Definition at line 544 of file http.c.

Referenced by http_read_header().

static int get_cookies ( HTTPContext s,
char **  cookies,
const char *  path,
const char *  domain 
)
static

Create a string containing cookie values for use as a HTTP cookie header field value for a particular path and domain from the cookie values stored in the HTTP protocol context.

The cookie string is stored in *cookies.

Returns
a negative value if an error condition occurred, 0 otherwise

Definition at line 637 of file http.c.

Referenced by http_connect().

static int has_header ( const char *  str,
const char *  header 
)
inlinestatic

Definition at line 734 of file http.c.

Referenced by http_connect().

static int http_buf_read ( URLContext h,
uint8_t buf,
int  size 
)
static

Definition at line 933 of file http.c.

Referenced by http_read_stream().

static int64_t http_seek_internal ( URLContext h,
int64_t  off,
int  whence,
int  force_reconnect 
)
static

Definition at line 1209 of file http.c.

Referenced by http_read_stream(), and http_seek().

static int http_read_stream ( URLContext h,
uint8_t buf,
int  size 
)
static

Definition at line 1001 of file http.c.

Referenced by http_read(), and http_read_stream_all().

static int http_read_stream_all ( URLContext h,
uint8_t buf,
int  size 
)
static

Definition at line 1055 of file http.c.

Referenced by store_icy().

static void update_metadata ( HTTPContext s,
char *  data 
)
static

Definition at line 1067 of file http.c.

Referenced by store_icy().

static int store_icy ( URLContext h,
int  size 
)
static

Definition at line 1093 of file http.c.

Referenced by http_read().

static int http_read ( URLContext h,
uint8_t buf,
int  size 
)
static

Definition at line 1130 of file http.c.

static int http_write ( URLContext h,
const uint8_t buf,
int  size 
)
static

Definition at line 1147 of file http.c.

static int http_shutdown ( URLContext h,
int  flags 
)
static

Definition at line 1173 of file http.c.

Referenced by http_close().

static int http_close ( URLContext h)
static

Definition at line 1189 of file http.c.

static int64_t http_seek ( URLContext h,
int64_t  off,
int  whence 
)
static

Definition at line 1257 of file http.c.

static int http_get_file_handle ( URLContext h)
static

Definition at line 1262 of file http.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, D },
{ "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
{ "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
{ "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
{ "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D | E },
{ "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
{ "mime_type", "export the MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
{ "cookies", "set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax", OFFSET(cookies), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D },
{ "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, D },
{ "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT },
{ "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT },
{ "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
{ "auth_type", "HTTP authentication type", OFFSET(auth_state.auth_type), AV_OPT_TYPE_INT, { .i64 = HTTP_AUTH_NONE }, HTTP_AUTH_NONE, HTTP_AUTH_BASIC, D | E, "auth_type"},
{ "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"},
{ "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"},
{ "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E },
{ "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
{ "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
{ "end_offset", "try to limit the request to bytes preceding this offset", OFFSET(end_off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
{ "method", "Override the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D },
{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D | E },
{ NULL }
}

Definition at line 107 of file http.c.