+++ /dev/null
-/*
- * HTTP protocol for ffmpeg client
- * Copyright (c) 2000, 2001 Fabrice Bellard.
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "avformat.h"
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#ifndef __BEOS__
-# include <arpa/inet.h>
-#else
-# include "barpainet.h"
-#endif
-#include <netdb.h>
-
-
-/* XXX: POST protocol is not completly implemented because ffmpeg use
- only a subset of it */
-
-//#define DEBUG
-
-/* used for protocol handling */
-#define BUFFER_SIZE 1024
-#define URL_SIZE 4096
-
-typedef struct {
- URLContext *hd;
- unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
- int line_count;
- int http_code;
- char location[URL_SIZE];
-} HTTPContext;
-
-static int http_connect(URLContext *h, const char *path, const char *hoststr);
-static int http_write(URLContext *h, uint8_t *buf, int size);
-
-
-/* return non zero if error */
-static int http_open(URLContext *h, const char *uri, int flags)
-{
- const char *path, *proxy_path;
- char hostname[1024], hoststr[1024];
- char path1[1024];
- char buf[1024];
- int port, use_proxy, err;
- HTTPContext *s;
- URLContext *hd = NULL;
-
- h->is_streamed = 1;
-
- s = av_malloc(sizeof(HTTPContext));
- if (!s) {
- return -ENOMEM;
- }
- h->priv_data = s;
-
- proxy_path = getenv("http_proxy");
- use_proxy = (proxy_path != NULL) && !getenv("no_proxy") &&
- strstart(proxy_path, "http://", NULL);
-
- /* fill the dest addr */
- redo:
- /* needed in any case to build the host string */
- url_split(NULL, 0, hostname, sizeof(hostname), &port,
- path1, sizeof(path1), uri);
- if (port > 0) {
- snprintf(hoststr, sizeof(hoststr), "%s:%d", hostname, port);
- } else {
- pstrcpy(hoststr, sizeof(hoststr), hostname);
- }
-
- if (use_proxy) {
- url_split(NULL, 0, hostname, sizeof(hostname), &port,
- NULL, 0, proxy_path);
- path = uri;
- } else {
- if (path1[0] == '\0')
- path = "/";
- else
- path = path1;
- }
- if (port < 0)
- port = 80;
-
- snprintf(buf, sizeof(buf), "tcp://%s:%d", hostname, port);
- err = url_open(&hd, buf, URL_RDWR);
- if (err < 0)
- goto fail;
-
- s->hd = hd;
- if (http_connect(h, path, hoststr) < 0)
- goto fail;
- if (s->http_code == 303 && s->location[0] != '\0') {
- /* url moved, get next */
- uri = s->location;
- url_close(hd);
- goto redo;
- }
- return 0;
- fail:
- if (hd)
- url_close(hd);
- av_free(s);
- return -EIO;
-}
-
-static int http_getc(HTTPContext *s)
-{
- int len;
- if (s->buf_ptr >= s->buf_end) {
- len = url_read(s->hd, s->buffer, BUFFER_SIZE);
- if (len < 0) {
- return -EIO;
- } else if (len == 0) {
- return -1;
- } else {
- s->buf_ptr = s->buffer;
- s->buf_end = s->buffer + len;
- }
- }
- return *s->buf_ptr++;
-}
-
-static int process_line(HTTPContext *s, char *line, int line_count)
-{
- char *tag, *p;
-
- /* end of header */
- if (line[0] == '\0')
- return 0;
-
- p = line;
- if (line_count == 0) {
- while (!isspace(*p) && *p != '\0')
- p++;
- while (isspace(*p))
- p++;
- s->http_code = strtol(p, NULL, 10);
-#ifdef DEBUG
- printf("http_code=%d\n", s->http_code);
-#endif
- } else {
- while (*p != '\0' && *p != ':')
- p++;
- if (*p != ':')
- return 1;
-
- *p = '\0';
- tag = line;
- p++;
- while (isspace(*p))
- p++;
- if (!strcmp(tag, "Location")) {
- strcpy(s->location, p);
- }
- }
- return 1;
-}
-
-static int http_connect(URLContext *h, const char *path, const char *hoststr)
-{
- HTTPContext *s = h->priv_data;
- int post, err, ch;
- char line[1024], *q;
-
-
- /* send http header */
- post = h->flags & URL_WRONLY;
-
- snprintf(s->buffer, sizeof(s->buffer),
- "%s %s HTTP/1.0\n"
- "User-Agent: FFmpeg %s\n"
- "Accept: */*\n"
- "Host: %s\n"
- "\n",
- post ? "POST" : "GET",
- path,
- LIBAVFORMAT_VERSION,
- hoststr);
-
- if (http_write(h, s->buffer, strlen(s->buffer)) < 0)
- return -EIO;
-
- /* init input buffer */
- s->buf_ptr = s->buffer;
- s->buf_end = s->buffer;
- s->line_count = 0;
- s->location[0] = '\0';
- if (post) {
- sleep(1);
- return 0;
- }
-
- /* wait for header */
- q = line;
- for(;;) {
- ch = http_getc(s);
- if (ch < 0)
- return -EIO;
- 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(s, line, s->line_count);
- if (err < 0)
- return err;
- if (err == 0)
- return 0;
- s->line_count++;
- q = line;
- } else {
- if ((q - line) < sizeof(line) - 1)
- *q++ = ch;
- }
- }
-}
-
-
-static int http_read(URLContext *h, uint8_t *buf, int size)
-{
- HTTPContext *s = h->priv_data;
- int size1, len;
-
- size1 = size;
- while (size > 0) {
- /* read bytes from input buffer first */
- len = s->buf_end - s->buf_ptr;
- if (len > 0) {
- if (len > size)
- len = size;
- memcpy(buf, s->buf_ptr, len);
- s->buf_ptr += len;
- } else {
- len = url_read (s->hd, buf, size);
- if (len < 0) {
- return len;
- } else if (len == 0) {
- break;
- }
- }
- size -= len;
- buf += len;
- }
- return size1 - size;
-}
-
-/* used only when posting data */
-static int http_write(URLContext *h, uint8_t *buf, int size)
-{
- HTTPContext *s = h->priv_data;
- return url_write(s->hd, buf, size);
-}
-
-static int http_close(URLContext *h)
-{
- HTTPContext *s = h->priv_data;
- url_close(s->hd);
- av_free(s);
- return 0;
-}
-
-URLProtocol http_protocol = {
- "http",
- http_open,
- http_read,
- http_write,
- NULL, /* seek */
- http_close,
-};
-
projects / synfig.git / blobdiff