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Data Structures | Macros | Functions | Variables
http.c File Reference
#include "libavutil/avstring.h"
#include "avformat.h"
#include "internal.h"
#include "network.h"
#include "http.h"
#include "os_support.h"
#include "httpauth.h"
#include "url.h"
#include "libavutil/opt.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)
 
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 (URLContext *h, AVDictionary **options)
 
int ff_http_do_new_request (URLContext *h, const char *uri)
 Send a new HTTP request, reusing the old connection.
 
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 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_read_header (URLContext *h, int *new_location)
 
static int http_buf_read (URLContext *h, uint8_t *buf, int size)
 
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 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 43 of file http.c.

Referenced by http_getc(), and http_seek().

#define MAX_REDIRECTS   8

Definition at line 44 of file http.c.

Referenced by http_open_cnx().

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

Definition at line 95 of file http.c.

Definition at line 96 of file http.c.

Definition at line 97 of file http.c.

#define DEFAULT_USER_AGENT   "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)

Definition at line 98 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 1095 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 655 of file http.c.

Referenced by http_open_cnx().

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 128 of file http.c.

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

Definition at line 138 of file http.c.

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

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 235 of file http.c.

Referenced by rtmp_http_send_cmd().

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

Definition at line 254 of file http.c.

static int http_getc ( HTTPContext s)
static

Definition at line 283 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 300 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 324 of file http.c.

Referenced by process_line().

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

Definition at line 339 of file http.c.

Referenced by process_line().

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

Definition at line 353 of file http.c.

Referenced by process_line().

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

Definition at line 368 of file http.c.

Referenced by process_line().

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

Definition at line 402 of file http.c.

Referenced by process_line().

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

Definition at line 422 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 526 of file http.c.

Referenced by http_connect().

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

Definition at line 619 of file http.c.

Referenced by http_connect().

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

Definition at line 627 of file http.c.

Referenced by http_connect(), and http_read_stream().

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

Definition at line 815 of file http.c.

Referenced by http_read_stream().

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

Definition at line 871 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 912 of file http.c.

Referenced by store_icy().

static int store_icy ( URLContext h,
int  size 
)
static

Definition at line 924 of file http.c.

Referenced by http_read().

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

Definition at line 960 of file http.c.

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

Definition at line 977 of file http.c.

static int http_shutdown ( URLContext h,
int  flags 
)
static

Definition at line 1003 of file http.c.

Referenced by http_close().

static int http_close ( URLContext h)
static

Definition at line 1019 of file http.c.

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

Definition at line 1040 of file http.c.

static int http_get_file_handle ( URLContext h)
static

Definition at line 1089 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 = 0}, 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 },
{"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, },
{NULL}
}

Definition at line 99 of file http.c.