Release 2.6.6

- [BUGFIX] Using HTTP/3 to HTTP/1.x converter.
- [BUGFIX] Truncate log messages instead of throwing them away.

CHANGELOG

@@ -1,3 +1,8 @@
+2019-11-20
+    - 2.6.6
+    - [BUGFIX] Using HTTP/3 to HTTP/1.x converter.
+    - [BUGFIX] Truncate log messages instead of throwing them away.
+
 2019-11-15
     - 2.6.5
     - [BUGFIX] High priority buffered packet queue length.

include/lsquic.h

@@ -25,7 +25,7 @@ extern "C" {
 
 #define LSQUIC_MAJOR_VERSION 2
 #define LSQUIC_MINOR_VERSION 6
-#define LSQUIC_PATCH_VERSION 5
+#define LSQUIC_PATCH_VERSION 6
 
 /**
  * Engine flags:

src/liblsquic/lsquic_logger.c

@@ -20,7 +20,12 @@
 #include "lsquic_logger.h"
 
 #define MAX_LINE_LEN 8192
-#define FORMAT_PROBLEM(lb, len, max) (((ssize_t)lb < 0) || ((ssize_t)lb + (ssize_t)len >= (ssize_t)max))
+/* Expanded TRUNC_FMT should not exceed TRUNC_SZ bytes.  At the same time,
+ * TRUNC_SZ should be significantly smaller than MAX_LINE_LEN.
+ */
+#define TRUNC_FMT "<truncated, need %d bytes>"
+#define TRUNC_SZ 40
+#define FORMAT_PROBLEM(lb, len, max) ((lb < 0) || (lb + len >= max))
 
 /* TODO: display GQUIC CIDs in Chrome-compatible format */
 
@@ -241,7 +246,7 @@ lsquic_logger_log3 (enum lsq_log_level log_level,
     const int saved_errno = errno;
     char cidbuf_[MAX_CID_LEN * 2 + 1];
     size_t len = 0;
-    size_t lb;
+    int lb;
     size_t max = MAX_LINE_LEN;
     char buf[MAX_LINE_LEN];
 
@@ -262,6 +267,11 @@ lsquic_logger_log3 (enum lsq_log_level log_level,
     va_start(ap, fmt);
     lb = vsnprintf(buf + len, max - len, fmt, ap);
     va_end(ap);
+    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
+    {
+        len = max - TRUNC_SZ;
+        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
+    }
     if (FORMAT_PROBLEM(lb, len, max))
         goto end;
     len += lb;
@@ -283,7 +293,7 @@ lsquic_logger_log2 (enum lsq_log_level log_level,
     const int saved_errno = errno;
     char cidbuf_[MAX_CID_LEN * 2 + 1];
     size_t len = 0;
-    size_t lb;
+    int lb;
     size_t max = MAX_LINE_LEN;
     char buf[MAX_LINE_LEN];
 
@@ -304,6 +314,11 @@ lsquic_logger_log2 (enum lsq_log_level log_level,
     va_start(ap, fmt);
     lb = vsnprintf(buf + len, max - len, fmt, ap);
     va_end(ap);
+    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
+    {
+        len = max - TRUNC_SZ;
+        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
+    }
     if (FORMAT_PROBLEM(lb, len, max))
         goto end;
     len += lb;
@@ -324,7 +339,7 @@ lsquic_logger_log1 (enum lsq_log_level log_level,
 {
     const int saved_errno = errno;
     size_t len = 0;
-    size_t lb;
+    int lb;
     size_t max = MAX_LINE_LEN;
     char buf[MAX_LINE_LEN];
 
@@ -344,6 +359,11 @@ lsquic_logger_log1 (enum lsq_log_level log_level,
     va_start(ap, fmt);
     lb = vsnprintf(buf + len, max - len, fmt, ap);
     va_end(ap);
+    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
+    {
+        len = max - TRUNC_SZ;
+        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
+    }
     if (FORMAT_PROBLEM(lb, len, max))
         goto end;
     len += lb;
@@ -362,7 +382,7 @@ lsquic_logger_log0 (enum lsq_log_level log_level, const char *fmt, ...)
 {
     const int saved_errno = errno;
     size_t len = 0;
-    size_t lb;
+    int lb;
     size_t max = MAX_LINE_LEN;
     char buf[MAX_LINE_LEN];
 
@@ -382,6 +402,11 @@ lsquic_logger_log0 (enum lsq_log_level log_level, const char *fmt, ...)
     va_start(ap, fmt);
     lb = vsnprintf(buf + len, max - len, fmt, ap);
     va_end(ap);
+    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
+    {
+        len = max - TRUNC_SZ;
+        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
+    }
     if (FORMAT_PROBLEM(lb, len, max))
         goto end;
     len += lb;

src/liblsquic/lsquic_stream.c

@@ -1435,10 +1435,16 @@ lsquic_stream_readf (struct lsquic_stream *stream,
         errno = EBADF;
         return -1;
     }
-    if ((stream->stream_flags & STREAM_FIN_REACHED)
-            && 0 == (!!(stream->stream_flags & STREAM_HAVE_UH)
-                   ^ !!(stream->sm_bflags & SMBF_USE_HEADERS)))
-        return 0;
+    if (stream->stream_flags & STREAM_FIN_REACHED)
+    {
+       if (stream->sm_bflags & SMBF_USE_HEADERS)
+       {
+            if ((stream->stream_flags & STREAM_HAVE_UH) && !stream->uh)
+                return 0;
+       }
+       else
+           return 0;
+    }
 
     return stream_readf(stream, readf, ctx);
 }

test/unittests/test_send_headers.c

@@ -52,6 +52,8 @@
 #include "lsquic_enc_sess.h"
 #include "lsqpack.h"
 #include "lsquic_frab_list.h"
+#include "lsquic_http1x_if.h"
+#include "lsquic_qdec_hdl.h"
 #include "lsquic_qenc_hdl.h"
 #include "lsquic_varint.h"
 #include "lsquic_hq.h"
@@ -122,6 +124,7 @@ struct test_objs {
     unsigned                  initial_stream_window;
     enum stream_ctor_flags    ctor_flags;
     struct qpack_enc_hdl      qeh;
+    struct qpack_dec_hdl      qdh;
 };
 
 
@@ -189,6 +192,11 @@ init_test_objs (struct test_objs *tobjs, unsigned initial_conn_window,
         s = lsquic_qeh_settings(&tobjs->qeh, 0, 0, 0, 0);
         assert(0 == s);
         tobjs->conn_pub.u.ietf.qeh = &tobjs->qeh;
+        tobjs->conn_pub.enpub->enp_hsi_if  = lsquic_http1x_if;
+        s = lsquic_qdh_init(&tobjs->qdh, &tobjs->lconn, 0,
+                                    tobjs->conn_pub.enpub, 0, 0);
+        tobjs->conn_pub.u.ietf.qdh = &tobjs->qdh;
+        assert(0 == s);
     }
 }
 
@@ -201,7 +209,10 @@ deinit_test_objs (struct test_objs *tobjs)
     lsquic_malo_destroy(tobjs->conn_pub.packet_out_malo);
     lsquic_mm_cleanup(&tobjs->eng_pub.enp_mm);
     if ((1 << tobjs->lconn.cn_version) & LSQUIC_IETF_VERSIONS)
+    {
         lsquic_qeh_cleanup(&tobjs->qeh);
+        lsquic_qdh_cleanup(&tobjs->qdh);
+    }
 }
 
 
@@ -583,6 +594,46 @@ test_read_headers (int ietf, int use_hset)
 }
 
 
+static void
+test_read_headers_http1x (void)
+{
+    struct test_objs tobjs;
+    struct lsquic_stream *stream;
+    struct stream_frame *frame;
+    int s;
+    const unsigned char headers_frame[5] = {
+        0x01,   /* Headers frame */
+        0x03,   /* Frame length */
+        0x00,
+        0x00,
+        0xC0 | 25   /* :status 200 */,
+    };
+    ssize_t nr;
+    unsigned char buf[0x100];
+
+    init_test_objs(&tobjs, 0x1000, 0x1000, SCF_IETF);
+
+    stream = new_stream(&tobjs, 0, 0x1000);
+    frame = new_frame_in(&tobjs, 0, sizeof(headers_frame), 1);
+    memcpy((unsigned char *) frame->data_frame.df_data, headers_frame,
+                                                    sizeof(headers_frame));
+    s = lsquic_stream_frame_in(stream, frame);
+    assert(s == 0);
+
+    assert(stream->stream_flags & STREAM_FIN_REACHED);
+    s = lsquic_stream_readable(stream);
+
+    nr = lsquic_stream_read(stream, buf, sizeof(buf));
+    assert(nr > 0);
+    assert(nr == 19);
+    assert(0 == memcmp(buf, "HTTP/1.1 200 OK\r\n\r\n", nr));
+
+    lsquic_stream_destroy(stream);
+
+    deinit_test_objs(&tobjs);
+}
+
+
 int
 main (int argc, char **argv)
 {
@@ -612,6 +663,7 @@ main (int argc, char **argv)
     test_read_headers(0, 1);
     test_read_headers(1, 0);
     test_read_headers(1, 1);
+    test_read_headers_http1x();
 
     return 0;
 }