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ftp: comments

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This commit is contained in:
Lukasz Marek 2013-07-17 02:15:20 +02:00
parent db72b7742a
commit 2217243e12
1 changed files with 6 additions and 4 deletions
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10
libavformat/ftp.c
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@ -114,9 +114,8 @@ static int ftp_get_line(FTPContext *s, char *line, int line_size)
/*
* This routine returns ftp server response code.
* Server may send more than one response for a certain command, following priorities are used:
* - When pref_codes are set then pref_code is return if occurred. (expected result)
* - 0 is returned when no pref_codes or not occurred
* Server may send more than one response for a certain command.
* First expected code is returned.
*/
static int ftp_status(FTPContext *s, char **line, const int response_codes[])
{
@ -404,7 +403,7 @@ static int ftp_connect_control_connection(URLContext *h)
return err;
}
/* consume all messages from server */
/* check if server is ready */
if (ftp_status(s, NULL, connect_codes) != 220) {
av_log(h, AV_LOG_ERROR, "FTP server not ready for new users\n");
return AVERROR(EACCES);
@ -571,6 +570,7 @@ static int64_t ftp_seek(URLContext *h, int64_t pos, int whence)
if (h->is_streamed)
return AVERROR(EIO);
/* XXX: Simulate behaviour of lseek in file protocol, which could be treated as a reference */
new_pos = FFMAX(0, new_pos);
fake_pos = s->filesize != -1 ? FFMIN(new_pos, s->filesize) : new_pos;
@ -590,6 +590,7 @@ static int ftp_read(URLContext *h, unsigned char *buf, int size)
av_dlog(h, "ftp protocol read %d bytes\n", size);
retry:
if (s->state == DISCONNECTED) {
/* optimization */
if (s->position >= s->filesize)
return 0;
if ((err = ftp_connect_data_connection(h)) < 0)
@ -607,6 +608,7 @@ static int ftp_read(URLContext *h, unsigned char *buf, int size)
s->position += read;
if (s->position >= s->filesize) {
/* server will terminate, but keep current position to avoid madness */
/* save position to restart from it */
int64_t pos = s->position;
if (ftp_abort(h) < 0) {
s->position = pos;