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authorDaniel Stenberg <daniel@haxx.se>2019-10-01 15:40:05 +0200
committerDaniel Stenberg <daniel@haxx.se>2019-10-02 07:46:05 +0200
commitf0f053fed034bacf956a9f32ea65529b0b123247 (patch)
treebb3f25d59646cb85cd64728e4c95d3c6df436da4
parentac830139dadf4abd48232e3eb5ce0c8d06d19dcf (diff)
chunked-encoding: stop hiding the CURLE_BAD_CONTENT_ENCODING error
Unknown content-encoding would get returned as CURLE_WRITE_ERROR if the response is chunked-encoded. Reported-by: Ilya Kosarev Fixes #4310 Closes #4449
-rw-r--r--lib/http.h5
-rw-r--r--lib/http_chunks.c28
-rw-r--r--lib/http_chunks.h13
-rw-r--r--lib/http_proxy.c7
-rw-r--r--lib/transfer.c10
5 files changed, 39 insertions, 24 deletions
diff --git a/lib/http.h b/lib/http.h
index f0ddec759..a3a275702 100644
--- a/lib/http.h
+++ b/lib/http.h
@@ -83,11 +83,6 @@ CURLcode Curl_http(struct connectdata *conn, bool *done);
CURLcode Curl_http_done(struct connectdata *, CURLcode, bool premature);
CURLcode Curl_http_connect(struct connectdata *conn, bool *done);
-/* The following functions are defined in http_chunks.c */
-void Curl_httpchunk_init(struct connectdata *conn);
-CHUNKcode Curl_httpchunk_read(struct connectdata *conn, char *datap,
- ssize_t length, ssize_t *wrote);
-
/* These functions are in http.c */
CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
const char *auth);
diff --git a/lib/http_chunks.c b/lib/http_chunks.c
index 18dfcb282..b6ffa4185 100644
--- a/lib/http_chunks.c
+++ b/lib/http_chunks.c
@@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -109,7 +109,8 @@ void Curl_httpchunk_init(struct connectdata *conn)
CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
char *datap,
ssize_t datalen,
- ssize_t *wrotep)
+ ssize_t *wrotep,
+ CURLcode *extrap)
{
CURLcode result = CURLE_OK;
struct Curl_easy *data = conn->data;
@@ -125,8 +126,10 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
chunk read process, to properly calculate the content length*/
if(data->set.http_te_skip && !k->ignorebody) {
result = Curl_client_write(conn, CLIENTWRITE_BODY, datap, datalen);
- if(result)
- return CHUNKE_WRITE_ERROR;
+ if(result) {
+ *extrap = result;
+ return CHUNKE_PASSTHRU_ERROR;
+ }
}
while(length) {
@@ -197,8 +200,10 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
else
result = Curl_client_write(conn, CLIENTWRITE_BODY, datap, piece);
- if(result)
- return CHUNKE_WRITE_ERROR;
+ if(result) {
+ *extrap = result;
+ return CHUNKE_PASSTHRU_ERROR;
+ }
}
*wrote += piece;
@@ -244,8 +249,10 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
if(!data->set.http_te_skip) {
result = Curl_client_write(conn, CLIENTWRITE_HEADER,
conn->trailer, conn->trlPos);
- if(result)
- return CHUNKE_WRITE_ERROR;
+ if(result) {
+ *extrap = result;
+ return CHUNKE_PASSTHRU_ERROR;
+ }
}
conn->trlPos = 0;
ch->state = CHUNK_TRAILER_CR;
@@ -339,8 +346,9 @@ const char *Curl_chunked_strerror(CHUNKcode code)
return "Illegal or missing hexadecimal sequence";
case CHUNKE_BAD_CHUNK:
return "Malformed encoding found";
- case CHUNKE_WRITE_ERROR:
- return "Write error";
+ case CHUNKE_PASSTHRU_ERROR:
+ DEBUGASSERT(0); /* never used */
+ return "";
case CHUNKE_BAD_ENCODING:
return "Bad content-encoding found";
case CHUNKE_OUT_OF_MEMORY:
diff --git a/lib/http_chunks.h b/lib/http_chunks.h
index b969c5590..8f4a33c8e 100644
--- a/lib/http_chunks.h
+++ b/lib/http_chunks.h
@@ -7,7 +7,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -21,6 +21,9 @@
* KIND, either express or implied.
*
***************************************************************************/
+
+struct connectdata;
+
/*
* The longest possible hexadecimal number we support in a chunked transfer.
* Weird enough, RFC2616 doesn't set a maximum size! Since we use strtoul()
@@ -71,9 +74,9 @@ typedef enum {
CHUNKE_TOO_LONG_HEX = 1,
CHUNKE_ILLEGAL_HEX,
CHUNKE_BAD_CHUNK,
- CHUNKE_WRITE_ERROR,
CHUNKE_BAD_ENCODING,
CHUNKE_OUT_OF_MEMORY,
+ CHUNKE_PASSTHRU_ERROR, /* Curl_httpchunk_read() returns a CURLcode to use */
CHUNKE_LAST
} CHUNKcode;
@@ -87,4 +90,10 @@ struct Curl_chunker {
size_t dataleft; /* untouched data amount at the end of the last buffer */
};
+/* The following functions are defined in http_chunks.c */
+void Curl_httpchunk_init(struct connectdata *conn);
+CHUNKcode Curl_httpchunk_read(struct connectdata *conn, char *datap,
+ ssize_t length, ssize_t *wrote,
+ CURLcode *passthru);
+
#endif /* HEADER_CURL_HTTP_CHUNKS_H */
diff --git a/lib/http_proxy.c b/lib/http_proxy.c
index 710101774..f095455a5 100644
--- a/lib/http_proxy.c
+++ b/lib/http_proxy.c
@@ -384,11 +384,12 @@ static CURLcode CONNECT(struct connectdata *conn,
/* chunked-encoded body, so we need to do the chunked dance
properly to know when the end of the body is reached */
CHUNKcode r;
+ CURLcode extra;
ssize_t tookcareof = 0;
/* now parse the chunked piece of data so that we can
properly tell when the stream ends */
- r = Curl_httpchunk_read(conn, s->ptr, 1, &tookcareof);
+ r = Curl_httpchunk_read(conn, s->ptr, 1, &tookcareof, &extra);
if(r == CHUNKE_STOP) {
/* we're done reading chunks! */
infof(data, "chunk reading DONE\n");
@@ -455,6 +456,7 @@ static CURLcode CONNECT(struct connectdata *conn,
}
else if(s->chunked_encoding) {
CHUNKcode r;
+ CURLcode extra;
infof(data, "Ignore chunked response-body\n");
@@ -472,7 +474,8 @@ static CURLcode CONNECT(struct connectdata *conn,
/* now parse the chunked piece of data so that we can
properly tell when the stream ends */
- r = Curl_httpchunk_read(conn, s->line_start + 1, 1, &gotbytes);
+ r = Curl_httpchunk_read(conn, s->line_start + 1, 1, &gotbytes,
+ &extra);
if(r == CHUNKE_STOP) {
/* we're done reading chunks! */
infof(data, "chunk reading DONE\n");
diff --git a/lib/transfer.c b/lib/transfer.c
index ef0d80638..44aa10971 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -776,14 +776,14 @@ static CURLcode readwrite_data(struct Curl_easy *data,
* and writes away the data. The returned 'nread' holds the number
* of actual data it wrote to the client.
*/
-
+ CURLcode extra;
CHUNKcode res =
- Curl_httpchunk_read(conn, k->str, nread, &nread);
+ Curl_httpchunk_read(conn, k->str, nread, &nread, &extra);
if(CHUNKE_OK < res) {
- if(CHUNKE_WRITE_ERROR == res) {
- failf(data, "Failed writing data");
- return CURLE_WRITE_ERROR;
+ if(CHUNKE_PASSTHRU_ERROR == res) {
+ failf(data, "Failed reading the chunked-encoded stream");
+ return extra;
}
failf(data, "%s in chunked-encoding", Curl_chunked_strerror(res));
return CURLE_RECV_ERROR;