/*
* HTTP protocol for ffmpeg client
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/base64.h"
+#include "libavutil/avstring.h"
#include "avformat.h"
#include <unistd.h>
+#include <strings.h>
#include "network.h"
+#include "os_support.h"
-#include "base64.h"
-
-/* XXX: POST protocol is not completly implemented because ffmpeg use
- only a subset of it */
-
-//#define DEBUG
+/* XXX: POST protocol is not completely implemented because ffmpeg uses
+ only a subset of it. */
/* used for protocol handling */
#define BUFFER_SIZE 1024
unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
int line_count;
int http_code;
- offset_t off, filesize;
+ int64_t chunksize; /**< Used if "Transfer-Encoding: chunked" otherwise -1. */
+ int64_t off, filesize;
char location[URL_SIZE];
} HTTPContext;
proxy_path = getenv("http_proxy");
use_proxy = (proxy_path != NULL) && !getenv("no_proxy") &&
- strstart(proxy_path, "http://", NULL);
+ av_strstart(proxy_path, "http://", NULL);
/* fill the dest addr */
redo:
if (port > 0) {
snprintf(hoststr, sizeof(hoststr), "%s:%d", hostname, port);
} else {
- pstrcpy(hoststr, sizeof(hoststr), hostname);
+ av_strlcpy(hoststr, hostname, sizeof(hoststr));
}
if (use_proxy) {
/* url moved, get next */
url_close(hd);
if (redirects++ >= MAX_REDIRECTS)
- return AVERROR_IO;
+ return AVERROR(EIO);
location_changed = 0;
goto redo;
}
fail:
if (hd)
url_close(hd);
- return AVERROR_IO;
+ return AVERROR(EIO);
}
static int http_open(URLContext *h, const char *uri, int flags)
}
h->priv_data = s;
s->filesize = -1;
+ s->chunksize = -1;
s->off = 0;
- pstrcpy (s->location, URL_SIZE, uri);
+ av_strlcpy(s->location, uri, URL_SIZE);
ret = http_open_cnx(h);
if (ret != 0)
if (s->buf_ptr >= s->buf_end) {
len = url_read(s->hd, s->buffer, BUFFER_SIZE);
if (len < 0) {
- return AVERROR_IO;
+ return AVERROR(EIO);
} else if (len == 0) {
return -1;
} else {
return *s->buf_ptr++;
}
+static int http_get_line(HTTPContext *s, char *line, int line_size)
+{
+ int ch;
+ char *q;
+
+ q = line;
+ for(;;) {
+ ch = http_getc(s);
+ if (ch < 0)
+ return AVERROR(EIO);
+ if (ch == '\n') {
+ /* process line */
+ if (q > line && q[-1] == '\r')
+ q--;
+ *q = '\0';
+
+ return 0;
+ } else {
+ if ((q - line) < line_size - 1)
+ *q++ = ch;
+ }
+ }
+}
+
static int process_line(URLContext *h, char *line, int line_count,
int *new_location)
{
while (isspace(*p))
p++;
s->http_code = strtol(p, NULL, 10);
-#ifdef DEBUG
- printf("http_code=%d\n", s->http_code);
-#endif
+
+ dprintf(NULL, "http_code=%d\n", s->http_code);
+
+ /* error codes are 4xx and 5xx */
+ if (s->http_code >= 400 && s->http_code < 600)
+ return -1;
} else {
while (*p != '\0' && *p != ':')
p++;
s->filesize = atoll(slash+1);
}
h->is_streamed = 0; /* we _can_ in fact seek */
+ } else if (!strcmp (tag, "Transfer-Encoding") && !strncasecmp(p, "chunked", 7)) {
+ s->filesize = -1;
+ s->chunksize = 0;
}
}
return 1;
const char *auth, int *new_location)
{
HTTPContext *s = h->priv_data;
- int post, err, ch;
- char line[1024], *q;
+ int post, err;
+ char line[1024];
char *auth_b64;
- offset_t off = s->off;
+ int auth_b64_len = (strlen(auth) + 2) / 3 * 4 + 1;
+ int64_t off = s->off;
/* send http header */
post = h->flags & URL_WRONLY;
-
- auth_b64 = av_base64_encode((uint8_t *)auth, strlen(auth));
+ auth_b64 = av_malloc(auth_b64_len);
+ av_base64_encode(auth_b64, auth_b64_len, auth, strlen(auth));
snprintf(s->buffer, sizeof(s->buffer),
"%s %s HTTP/1.1\r\n"
"User-Agent: %s\r\n"
av_freep(&auth_b64);
if (http_write(h, s->buffer, strlen(s->buffer)) < 0)
- return AVERROR_IO;
+ return AVERROR(EIO);
/* init input buffer */
s->buf_ptr = s->buffer;
s->buf_end = s->buffer;
s->line_count = 0;
s->off = 0;
+ s->filesize = -1;
if (post) {
- sleep(1);
return 0;
}
/* wait for header */
- q = line;
for(;;) {
- ch = http_getc(s);
- if (ch < 0)
- return AVERROR_IO;
- if (ch == '\n') {
- /* process line */
- if (q > line && q[-1] == '\r')
- q--;
- *q = '\0';
-#ifdef DEBUG
- printf("header='%s'\n", line);
-#endif
- err = process_line(h, line, s->line_count, new_location);
- if (err < 0)
- return err;
- if (err == 0)
- break;
- s->line_count++;
- q = line;
- } else {
- if ((q - line) < sizeof(line) - 1)
- *q++ = ch;
- }
+ if (http_get_line(s, line, sizeof(line)) < 0)
+ return AVERROR(EIO);
+
+ dprintf(NULL, "header='%s'\n", line);
+
+ err = process_line(h, line, s->line_count, new_location);
+ if (err < 0)
+ return err;
+ if (err == 0)
+ break;
+ s->line_count++;
}
return (off == s->off) ? 0 : -1;
HTTPContext *s = h->priv_data;
int len;
+ if (s->chunksize >= 0) {
+ if (!s->chunksize) {
+ char line[32];
+
+ for(;;) {
+ do {
+ if (http_get_line(s, line, sizeof(line)) < 0)
+ return AVERROR(EIO);
+ } while (!*line); /* skip CR LF from last chunk */
+
+ s->chunksize = strtoll(line, NULL, 16);
+
+ dprintf(NULL, "Chunked encoding data size: %"PRId64"'\n", s->chunksize);
+
+ if (!s->chunksize)
+ return 0;
+ break;
+ }
+ }
+ size = FFMIN(size, s->chunksize);
+ }
/* read bytes from input buffer first */
len = s->buf_end - s->buf_ptr;
if (len > 0) {
} else {
len = url_read(s->hd, buf, size);
}
- if (len > 0)
+ if (len > 0) {
s->off += len;
+ if (s->chunksize > 0)
+ s->chunksize -= len;
+ }
return len;
}
return 0;
}
-static offset_t http_seek(URLContext *h, offset_t off, int whence)
+static int64_t http_seek(URLContext *h, int64_t off, int whence)
{
HTTPContext *s = h->priv_data;
URLContext *old_hd = s->hd;
- offset_t old_off = s->off;
+ int64_t old_off = s->off;
if (whence == AVSEEK_SIZE)
return s->filesize;
return off;
}
+static int
+http_get_file_handle(URLContext *h)
+{
+ HTTPContext *s = h->priv_data;
+ return url_get_file_handle(s->hd);
+}
+
URLProtocol http_protocol = {
"http",
http_open,
http_write,
http_seek,
http_close,
+ .url_get_file_handle = http_get_file_handle,
};
projects / ffmpeg / blobdiff