diff options
Diffstat (limited to 'libs/libcurl/src/file.c')
| -rw-r--r-- | libs/libcurl/src/file.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/libs/libcurl/src/file.c b/libs/libcurl/src/file.c index dd8a1fd12a..1d174e519e 100644 --- a/libs/libcurl/src/file.c +++ b/libs/libcurl/src/file.c @@ -417,12 +417,12 @@ static CURLcode file_do(struct Curl_easy *data, bool *done) result = Curl_client_write(data, CLIENTWRITE_HEADER, header, 0); if(result) return result; - } - result = Curl_client_write(data, CLIENTWRITE_HEADER, - (char *)"Accept-ranges: bytes\r\n", 0); - if(result) - return result; + result = Curl_client_write(data, CLIENTWRITE_HEADER, + (char *)"Accept-ranges: bytes\r\n", 0); + if(result != CURLE_OK) + return result; + } filetime = (time_t)statbuf.st_mtime; result = Curl_gmtime(filetime, &buffer); @@ -464,18 +464,23 @@ static CURLcode file_do(struct Curl_easy *data, bool *done) data->state.resume_from += (curl_off_t)statbuf.st_size; } - if(data->state.resume_from <= expected_size) - expected_size -= data->state.resume_from; - else { - failf(data, "failed to resume file:// transfer"); - return CURLE_BAD_DOWNLOAD_RESUME; + if(data->state.resume_from > 0) { + /* We check explicitly if we have a start offset, because + * expected_size may be -1 if we don't know how large the file is, + * in which case we should not adjust it. */ + if(data->state.resume_from <= expected_size) + expected_size -= data->state.resume_from; + else { + failf(data, "failed to resume file:// transfer"); + return CURLE_BAD_DOWNLOAD_RESUME; + } } /* A high water mark has been specified so we obey... */ if(data->req.maxdownload > 0) expected_size = data->req.maxdownload; - if(!fstated || (expected_size == 0)) + if(!fstated || (expected_size <= 0)) size_known = FALSE; else size_known = TRUE; @@ -484,7 +489,7 @@ static CURLcode file_do(struct Curl_easy *data, bool *done) this is both more efficient than the former call to download() and it avoids problems with select() and recv() on file descriptors in Winsock */ - if(fstated) + if(size_known) Curl_pgrsSetDownloadSize(data, expected_size); if(data->state.resume_from) { |