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Diffstat (limited to 'libavformat/http.c')
-rw-r--r--libavformat/http.c219
1 files changed, 189 insertions, 30 deletions
diff --git a/libavformat/http.c b/libavformat/http.c
index 730a5b1b2f..91f8d1fe97 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -1,21 +1,21 @@
/*
- * HTTP protocol for avconv client
+ * HTTP protocol for ffmpeg client
* Copyright (c) 2000, 2001 Fabrice Bellard
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -29,7 +29,7 @@
#include "url.h"
#include "libavutil/opt.h"
-/* XXX: POST protocol is not completely implemented because avconv uses
+/* XXX: POST protocol is not completely implemented because ffmpeg uses
only a subset of it. */
/* The IO buffer size is unrelated to the max URL size in itself, but needs
@@ -46,28 +46,42 @@ typedef struct {
int line_count;
int http_code;
int64_t chunksize; /**< Used if "Transfer-Encoding: chunked" otherwise -1. */
+ char *content_type;
+ char *user_agent;
int64_t off, filesize;
char location[MAX_URL_SIZE];
HTTPAuthState auth_state;
HTTPAuthState proxy_auth_state;
char *headers;
int willclose; /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */
+ int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
int chunked_post;
int end_chunked_post; /**< A flag which indicates if the end of chunked encoding has been sent. */
int end_header; /**< A flag which indicates we have finished to read POST reply. */
int multiple_requests; /**< A flag which indicates if we use persistent connections. */
uint8_t *post_data;
int post_datalen;
+ int is_akamai;
+ int rw_timeout;
+ char *mime_type;
+ char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
} HTTPContext;
#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)
static const AVOption options[] = {
+{"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", "custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D|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", "force a content type", 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 },
{"multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D|E },
-{"post_data", "custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D|E },
+{"post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D|E },
+{"timeout", "set timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
+{"mime_type", "set MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, {0}, 0, 0, 0 },
+{"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, 0 },
{NULL}
};
#define HTTP_CLASS(flavor)\
@@ -145,8 +159,15 @@ static int http_open_cnx(URLContext *h)
ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
if (!s->hd) {
+ AVDictionary *opts = NULL;
+ char opts_format[20];
+ if (s->rw_timeout != -1) {
+ snprintf(opts_format, sizeof(opts_format), "%d", s->rw_timeout);
+ av_dict_set(&opts, "timeout", opts_format, 0);
+ } /* if option is not given, don't pass it and let tcp use its own default */
err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE,
- &h->interrupt_callback, NULL);
+ &h->interrupt_callback, &opts);
+ av_dict_free(&opts);
if (err < 0)
goto fail;
}
@@ -159,8 +180,7 @@ static int http_open_cnx(URLContext *h)
if (s->http_code == 401) {
if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
- ffurl_close(s->hd);
- s->hd = NULL;
+ ffurl_closep(&s->hd);
goto redo;
} else
goto fail;
@@ -168,8 +188,7 @@ static int http_open_cnx(URLContext *h)
if (s->http_code == 407) {
if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
- ffurl_close(s->hd);
- s->hd = NULL;
+ ffurl_closep(&s->hd);
goto redo;
} else
goto fail;
@@ -177,8 +196,7 @@ static int http_open_cnx(URLContext *h)
if ((s->http_code == 301 || s->http_code == 302 || s->http_code == 303 || s->http_code == 307)
&& location_changed == 1) {
/* url moved, get next */
- ffurl_close(s->hd);
- s->hd = NULL;
+ ffurl_closep(&s->hd);
if (redirects++ >= MAX_REDIRECTS)
return AVERROR(EIO);
/* Restart the authentication process with the new target, which
@@ -191,8 +209,7 @@ static int http_open_cnx(URLContext *h)
return 0;
fail:
if (s->hd)
- ffurl_close(s->hd);
- s->hd = NULL;
+ ffurl_closep(&s->hd);
return AVERROR(EIO);
}
@@ -210,7 +227,10 @@ static int http_open(URLContext *h, const char *uri, int flags)
{
HTTPContext *s = h->priv_data;
- h->is_streamed = 1;
+ if( s->seekable == 1 )
+ h->is_streamed = 0;
+ else
+ h->is_streamed = 1;
s->filesize = -1;
av_strlcpy(s->location, uri, sizeof(s->location));
@@ -321,8 +341,9 @@ static int process_line(URLContext *h, char *line, int line_count,
if ((slash = strchr(p, '/')) && strlen(slash) > 0)
s->filesize = strtoll(slash+1, NULL, 10);
}
- h->is_streamed = 0; /* we _can_ in fact seek */
- } else if (!av_strcasecmp(tag, "Accept-Ranges") && !strncmp(p, "bytes", 5)) {
+ if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
+ h->is_streamed = 0; /* we _can_ in fact seek */
+ } else if (!av_strcasecmp(tag, "Accept-Ranges") && !strncmp(p, "bytes", 5) && s->seekable == -1) {
h->is_streamed = 0;
} else if (!av_strcasecmp (tag, "Transfer-Encoding") && !av_strncasecmp(p, "chunked", 7)) {
s->filesize = -1;
@@ -336,11 +357,126 @@ static int process_line(URLContext *h, char *line, int line_count,
} else if (!av_strcasecmp (tag, "Connection")) {
if (!strcmp(p, "close"))
s->willclose = 1;
+ } else if (!av_strcasecmp (tag, "Server") && !av_strcasecmp (p, "AkamaiGHost")) {
+ s->is_akamai = 1;
+ } else if (!av_strcasecmp (tag, "Content-Type")) {
+ av_free(s->mime_type); s->mime_type = av_strdup(p);
+ } else if (!av_strcasecmp (tag, "Set-Cookie")) {
+ if (!s->cookies) {
+ if (!(s->cookies = av_strdup(p)))
+ return AVERROR(ENOMEM);
+ } else {
+ char *tmp = s->cookies;
+ size_t str_size = strlen(tmp) + strlen(p) + 2;
+ if (!(s->cookies = av_malloc(str_size))) {
+ s->cookies = tmp;
+ return AVERROR(ENOMEM);
+ }
+ snprintf(s->cookies, str_size, "%s\n%s", tmp, p);
+ av_free(tmp);
+ }
}
}
return 1;
}
+/**
+ * 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.
+ *
+ * @return a negative value if an error condition occurred, 0 otherwise
+ */
+static int get_cookies(HTTPContext *s, char **cookies, const char *path,
+ const char *domain)
+{
+ // cookie strings will look like Set-Cookie header field values. Multiple
+ // Set-Cookie fields will result in multiple values delimited by a newline
+ int ret = 0;
+ char *next, *cookie, *set_cookies = av_strdup(s->cookies), *cset_cookies = set_cookies;
+
+ if (!set_cookies) return AVERROR(EINVAL);
+
+ *cookies = NULL;
+ while ((cookie = av_strtok(set_cookies, "\n", &next))) {
+ int domain_offset = 0;
+ char *param, *next_param, *cdomain = NULL, *cpath = NULL, *cvalue = NULL;
+ set_cookies = NULL;
+
+ while ((param = av_strtok(cookie, "; ", &next_param))) {
+ cookie = NULL;
+ if (!av_strncasecmp("path=", param, 5)) {
+ av_free(cpath);
+ cpath = av_strdup(&param[5]);
+ } else if (!av_strncasecmp("domain=", param, 7)) {
+ av_free(cdomain);
+ cdomain = av_strdup(&param[7]);
+ } else if (!av_strncasecmp("secure", param, 6) ||
+ !av_strncasecmp("comment", param, 7) ||
+ !av_strncasecmp("max-age", param, 7) ||
+ !av_strncasecmp("version", param, 7)) {
+ // ignore Comment, Max-Age, Secure and Version
+ } else {
+ av_free(cvalue);
+ cvalue = av_strdup(param);
+ }
+ }
+ if (!cdomain)
+ cdomain = av_strdup(domain);
+
+ // ensure all of the necessary values are valid
+ if (!cdomain || !cpath || !cvalue) {
+ av_log(s, AV_LOG_WARNING,
+ "Invalid cookie found, no value, path or domain specified\n");
+ goto done_cookie;
+ }
+
+ // check if the request path matches the cookie path
+ if (av_strncasecmp(path, cpath, strlen(cpath)))
+ goto done_cookie;
+
+ // the domain should be at least the size of our cookie domain
+ domain_offset = strlen(domain) - strlen(cdomain);
+ if (domain_offset < 0)
+ goto done_cookie;
+
+ // match the cookie domain
+ if (av_strcasecmp(&domain[domain_offset], cdomain))
+ goto done_cookie;
+
+ // cookie parameters match, so copy the value
+ if (!*cookies) {
+ if (!(*cookies = av_strdup(cvalue))) {
+ ret = AVERROR(ENOMEM);
+ goto done_cookie;
+ }
+ } else {
+ char *tmp = *cookies;
+ size_t str_size = strlen(cvalue) + strlen(*cookies) + 3;
+ if (!(*cookies = av_malloc(str_size))) {
+ ret = AVERROR(ENOMEM);
+ goto done_cookie;
+ }
+ snprintf(*cookies, str_size, "%s; %s", tmp, cvalue);
+ av_free(tmp);
+ }
+
+ done_cookie:
+ av_free(cdomain);
+ av_free(cpath);
+ av_free(cvalue);
+ if (ret < 0) {
+ if (*cookies) av_freep(cookies);
+ av_free(cset_cookies);
+ return ret;
+ }
+ }
+
+ av_free(cset_cookies);
+
+ return 0;
+}
+
static inline int has_header(const char *str, const char *header)
{
/* header + 2 to skip over CRLF prefix. (make sure you have one!) */
@@ -380,7 +516,7 @@ static int http_connect(URLContext *h, const char *path, const char *local_path,
{
HTTPContext *s = h->priv_data;
int post, err;
- char headers[1024] = "";
+ char headers[4096] = "";
char *authstr = NULL, *proxyauthstr = NULL;
int64_t off = s->off;
int len = 0;
@@ -405,12 +541,15 @@ static int http_connect(URLContext *h, const char *path, const char *local_path,
/* set default headers if needed */
if (!has_header(s->headers, "\r\nUser-Agent: "))
- len += av_strlcatf(headers + len, sizeof(headers) - len,
- "User-Agent: %s\r\n", LIBAVFORMAT_IDENT);
+ len += av_strlcatf(headers + len, sizeof(headers) - len,
+ "User-Agent: %s\r\n", s->user_agent);
if (!has_header(s->headers, "\r\nAccept: "))
len += av_strlcpy(headers + len, "Accept: */*\r\n",
sizeof(headers) - len);
- if (!has_header(s->headers, "\r\nRange: ") && !post)
+ // Note: we send this on purpose even when s->off is 0 when we're probing,
+ // since it allows us to detect more reliably if a (non-conforming)
+ // server supports seeking by analysing the reply headers.
+ if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->seekable == -1))
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Range: bytes=%"PRId64"-\r\n", s->off);
@@ -430,6 +569,17 @@ static int http_connect(URLContext *h, const char *path, const char *local_path,
if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Content-Length: %d\r\n", s->post_datalen);
+ if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
+ len += av_strlcatf(headers + len, sizeof(headers) - len,
+ "Content-Type: %s\r\n", s->content_type);
+ if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
+ char *cookies = NULL;
+ if (!get_cookies(s, &cookies, path, hoststr)) {
+ len += av_strlcatf(headers + len, sizeof(headers) - len,
+ "Cookie: %s\r\n", cookies);
+ av_free(cookies);
+ }
+ }
/* now add in custom headers */
if (s->headers)
@@ -600,7 +750,7 @@ static int http_close(URLContext *h)
}
if (s->hd)
- ffurl_close(s->hd);
+ ffurl_closep(&s->hd);
return ret;
}
@@ -683,7 +833,7 @@ static int http_proxy_close(URLContext *h)
{
HTTPContext *s = h->priv_data;
if (s->hd)
- ffurl_close(s->hd);
+ ffurl_closep(&s->hd);
return 0;
}
@@ -697,8 +847,13 @@ static int http_proxy_open(URLContext *h, const char *uri, int flags)
HTTPAuthType cur_auth_type;
char *authstr;
int new_loc;
+ AVDictionary *opts = NULL;
+ char opts_format[20];
- h->is_streamed = 1;
+ if( s->seekable == 1 )
+ h->is_streamed = 0;
+ else
+ h->is_streamed = 1;
av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
pathbuf, sizeof(pathbuf), uri);
@@ -710,8 +865,13 @@ static int http_proxy_open(URLContext *h, const char *uri, int flags)
ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
NULL);
redo:
+ if (s->rw_timeout != -1) {
+ snprintf(opts_format, sizeof(opts_format), "%d", s->rw_timeout);
+ av_dict_set(&opts, "timeout", opts_format, 0);
+ } /* if option is not given, don't pass it and let tcp use its own default */
ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
- &h->interrupt_callback, NULL);
+ &h->interrupt_callback, &opts);
+ av_dict_free(&opts);
if (ret < 0)
return ret;
@@ -754,8 +914,7 @@ redo:
if (s->http_code == 407 &&
(cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) {
- ffurl_close(s->hd);
- s->hd = NULL;
+ ffurl_closep(&s->hd);
goto redo;
}
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