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add missing patch source files 

Signed-off-by: Toshaan Bharvani <toshaan@powerel.org>
master
Toshaan Bharvani 12 months ago
parent
370a14767d
commit
35f2504e24
5 changed files with 3704 additions and 0 deletions
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  1. 278
      SOURCES/2826.patch
  2. 3021
      SOURCES/3126.patch
  3. 65
      SOURCES/3136.patch
  4. 199
      SOURCES/3163.patch
  5. 141
      SOURCES/3272.patch

278
SOURCES/2826.patch
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From 764f071909df70622e79ee71323973c18c055c8c Mon Sep 17 00:00:00 2001
From: Giuseppe Scrivano <giuseppe@scrivano.org>
Date: Mon, 14 Sep 2020 16:28:10 +0200
Subject: [PATCH 1/5] gdbusauth: empty DATA does not need a trailing space

This is an interoperability fix. If the line is exactly "DATA\r\n",
the reference implementation of D-Bus treats this as equivalent to
"DATA \r\n", meaning the data block consists of zero hex-encoded bytes.
In practice, D-Bus clients send empty data blocks as "DATA\r\n", and
in fact sd-bus only accepts that, rejecting "DATA \r\n".

[Originally part of a larger commit; commit message added by smcv]

Signed-off-by: Giuseppe Scrivano <giuseppe@scrivano.org>
Co-authored-by: Simon McVittie <smcv@collabora.com>
Signed-off-by: Simon McVittie <smcv@collabora.com>
---
gio/gdbusauth.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gio/gdbusauth.c b/gio/gdbusauth.c
index ede21c8514..d2ca41a201 100644
--- a/gio/gdbusauth.c
+++ b/gio/gdbusauth.c
@@ -783,13 +783,13 @@ _g_dbus_auth_run_client (GDBusAuth *auth,
if (line == NULL)
goto out;
debug_print ("CLIENT: WaitingForData, read='%s'", line);
- if (g_str_has_prefix (line, "DATA "))
+ if (g_str_equal (line, "DATA") || g_str_has_prefix (line, "DATA "))
{
gchar *encoded;
gchar *decoded_data;
gsize decoded_data_len = 0;
- encoded = g_strdup (line + 5);
+ encoded = g_strdup (line + 4);
g_free (line);
g_strstrip (encoded);
decoded_data = hexdecode (encoded, &decoded_data_len, error);
@@ -1255,13 +1255,13 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
debug_print ("SERVER: WaitingForData, read '%s'", line);
if (line == NULL)
goto out;
- if (g_str_has_prefix (line, "DATA "))
+ if (g_str_equal (line, "DATA") || g_str_has_prefix (line, "DATA "))
{
gchar *encoded;
gchar *decoded_data;
gsize decoded_data_len = 0;
- encoded = g_strdup (line + 5);
+ encoded = g_strdup (line + 4);
g_free (line);
g_strstrip (encoded);
decoded_data = hexdecode (encoded, &decoded_data_len, error);
--
GitLab


From a7d2e727eefcf883bb463ad559f5632e8e448757 Mon Sep 17 00:00:00 2001
From: Giuseppe Scrivano <giuseppe@scrivano.org>
Date: Mon, 14 Sep 2020 16:28:10 +0200
Subject: [PATCH 2/5] GDBusServer: If no initial response for EXTERNAL, send a
challenge

Sending an "initial response" along with the AUTH command is meant
to be an optional optimization, and clients are allowed to omit it.
We must reply with our initial challenge, which in the case of EXTERNAL
is an empty string: the client responds to that with the authorization
identity.

If we do not reply to the AUTH command, then the client will wait
forever for our reply, while we wait forever for the reply that we
expect the client to send, resulting in deadlock.

D-Bus does not have a way to distinguish between an empty initial
response and the absence of an initial response, so clients that want
to use an empty authorization identity, such as systed's sd-bus,
cannot use the initial-response optimization and will fail to connect
to a GDBusServer that does not have this change.

[Originally part of a larger commit; commit message added by smcv.]

Signed-off-by: Simon McVittie <smcv@collabora.com>
---
gio/gdbusauthmechanismexternal.c | 23 ++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/gio/gdbusauthmechanismexternal.c b/gio/gdbusauthmechanismexternal.c
index 617fe1d0e5..ddd06cbd5e 100644
--- a/gio/gdbusauthmechanismexternal.c
+++ b/gio/gdbusauthmechanismexternal.c
@@ -40,6 +40,7 @@ struct _GDBusAuthMechanismExternalPrivate
gboolean is_client;
gboolean is_server;
GDBusAuthMechanismState state;
+ gboolean empty_data_sent;
};
static gint mechanism_get_priority (void);
@@ -253,7 +254,9 @@ mechanism_server_initiate (GDBusAuthMechanism *mechanism,
}
else
{
- m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_WAITING_FOR_DATA;
+ /* The initial-response optimization was not used, so we need to
+ * send an empty challenge to prompt the client to respond. */
+ m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_HAVE_DATA_TO_SEND;
}
}
@@ -288,12 +291,22 @@ mechanism_server_data_send (GDBusAuthMechanism *mechanism,
g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_EXTERNAL (mechanism), NULL);
g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, NULL);
- g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_HAVE_DATA_TO_SEND, NULL);
- /* can never end up here because we are never in the HAVE_DATA_TO_SEND state */
- g_assert_not_reached ();
+ if (out_data_len)
+ *out_data_len = 0;
- return NULL;
+ if (m->priv->empty_data_sent)
+ {
+ /* We have already sent an empty data response.
+ Reject the connection. */
+ m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_REJECTED;
+ return NULL;
+ }
+
+ m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_WAITING_FOR_DATA;
+ m->priv->empty_data_sent = TRUE;
+
+ return g_strdup ("");
}
static gchar *
--
GitLab


From b51e3ab09e39c590c65a7be6228ecfa48a6189f6 Mon Sep 17 00:00:00 2001
From: Giuseppe Scrivano <giuseppe@scrivano.org>
Date: Mon, 14 Sep 2020 16:28:10 +0200
Subject: [PATCH 3/5] GDBusServer: Accept empty authorization identity for
EXTERNAL mechanism

RFC 4422 appendix A defines the empty authorization identity to mean
the identity that the server associated with its authentication
credentials. In this case, this means whatever uid is in the
GCredentials object.

In particular, this means that clients in a different Linux user
namespace can authenticate against our server and will be authorized
as the version of their uid that is visible in the server's namespace,
even if the corresponding numeric uid returned by geteuid() in the
client's namespace was different. systemd's sd-bus has relied on this
since commit
https://github.com/systemd/systemd/commit/1ed4723d38cd0d1423c8fe650f90fa86007ddf55.

[Originally part of a larger commit; commit message added by smcv]

Signed-off-by: Simon McVittie <smcv@collabora.com>
---
gio/gdbusauthmechanismexternal.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/gio/gdbusauthmechanismexternal.c b/gio/gdbusauthmechanismexternal.c
index ddd06cbd5e..a465862d12 100644
--- a/gio/gdbusauthmechanismexternal.c
+++ b/gio/gdbusauthmechanismexternal.c
@@ -201,14 +201,24 @@ data_matches_credentials (const gchar *data,
if (credentials == NULL)
goto out;
- if (data == NULL || data_len == 0)
- goto out;
-
#if defined(G_OS_UNIX)
{
gint64 alleged_uid;
gchar *endp;
+ /* If we were unable to find out the uid, then nothing
+ * can possibly match it. */
+ if (g_credentials_get_unix_user (credentials, NULL) == (uid_t) -1)
+ goto out;
+
+ /* An empty authorization identity means we want to be
+ * whatever identity the out-of-band credentials say we have
+ * (RFC 4422 appendix A.1). This effectively matches any uid. */
+ if (data == NULL || data_len == 0)
+ {
+ match = TRUE;
+ goto out;
+ }
/* on UNIX, this is the uid as a string in base 10 */
alleged_uid = g_ascii_strtoll (data, &endp, 10);
if (*endp == '\0')
--
GitLab


From 3f532af65c98e4ba8426c53f26c9ee15d3692f9c Mon Sep 17 00:00:00 2001
From: Simon McVittie <smcv@collabora.com>
Date: Mon, 18 Jul 2022 17:14:44 +0100
Subject: [PATCH 4/5] gdbusauth: Represent empty data block as DATA\r\n, with
no space

This is an interoperability fix. The reference implementation of D-Bus
treats "DATA\r\n" as equivalent to "DATA \r\n", but sd-bus does not,
and only accepts the former.

Signed-off-by: Simon McVittie <smcv@collabora.com>
---
gio/gdbusauth.c | 34 ++++++++++++++++++++++++++--------
1 file changed, 26 insertions(+), 8 deletions(-)

diff --git a/gio/gdbusauth.c b/gio/gdbusauth.c
index d2ca41a201..89cbbf67c6 100644
--- a/gio/gdbusauth.c
+++ b/gio/gdbusauth.c
@@ -807,11 +807,21 @@ _g_dbus_auth_run_client (GDBusAuth *auth,
{
gchar *data;
gsize data_len;
- gchar *encoded_data;
+
data = _g_dbus_auth_mechanism_client_data_send (mech, &data_len);
- encoded_data = _g_dbus_hexencode (data, data_len);
- s = g_strdup_printf ("DATA %s\r\n", encoded_data);
- g_free (encoded_data);
+
+ if (data_len == 0)
+ {
+ s = g_strdup ("DATA\r\n");
+ }
+ else
+ {
+ gchar *encoded_data = _g_dbus_hexencode (data, data_len);
+
+ s = g_strdup_printf ("DATA %s\r\n", encoded_data);
+ g_free (encoded_data);
+ }
+
g_free (data);
debug_print ("CLIENT: writing '%s'", s);
if (!g_data_output_stream_put_string (dos, s, cancellable, error))
@@ -1209,13 +1219,21 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
gsize data_len;
data = _g_dbus_auth_mechanism_server_data_send (mech, &data_len);
+
if (data != NULL)
{
- gchar *encoded_data;
+ if (data_len == 0)
+ {
+ s = g_strdup ("DATA\r\n");
+ }
+ else
+ {
+ gchar *encoded_data = _g_dbus_hexencode (data, data_len);
+
+ s = g_strdup_printf ("DATA %s\r\n", encoded_data);
+ g_free (encoded_data);
+ }
- encoded_data = _g_dbus_hexencode (data, data_len);
- s = g_strdup_printf ("DATA %s\r\n", encoded_data);
- g_free (encoded_data);
g_free (data);
debug_print ("SERVER: writing '%s'", s);
--
GitLab

3021
SOURCES/3126.patch
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65
SOURCES/3136.patch
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From ba2137b0d9ea3744155be81a5ba770c6535b46f3 Mon Sep 17 00:00:00 2001
From: Simon McVittie <smcv@collabora.com>
Date: Thu, 15 Dec 2022 12:51:37 +0000
Subject: [PATCH] gvariant-serialiser: Convert endianness of offsets
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The array of offsets is little-endian, even on big-endian architectures
like s390x.

Fixes: ade71fb5 "gvariant: Don’t allow child elements to overlap with each other"
Resolves: https://gitlab.gnome.org/GNOME/glib/-/issues/2839
Signed-off-by: Simon McVittie <smcv@collabora.com>
---
glib/gvariant-serialiser.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/glib/gvariant-serialiser.c b/glib/gvariant-serialiser.c
index fadefab659..f443c2eb85 100644
--- a/glib/gvariant-serialiser.c
+++ b/glib/gvariant-serialiser.c
@@ -714,17 +714,19 @@ gvs_variable_sized_array_n_children (GVariantSerialised value)
/* Find the index of the first out-of-order element in @data, assuming that
* @data is an array of elements of given @type, starting at index @start and
* containing a further @len-@start elements. */
-#define DEFINE_FIND_UNORDERED(type) \
+#define DEFINE_FIND_UNORDERED(type, le_to_native) \
static gsize \
find_unordered_##type (const guint8 *data, gsize start, gsize len) \
{ \
gsize off; \
- type current, previous; \
+ type current_le, previous_le, current, previous; \
\
- memcpy (&previous, data + start * sizeof (current), sizeof (current)); \
+ memcpy (&previous_le, data + start * sizeof (current), sizeof (current)); \
+ previous = le_to_native (previous_le); \
for (off = (start + 1) * sizeof (current); off < len * sizeof (current); off += sizeof (current)) \
{ \
- memcpy (&current, data + off, sizeof (current)); \
+ memcpy (&current_le, data + off, sizeof (current)); \
+ current = le_to_native (current_le); \
if (current < previous) \
break; \
previous = current; \
@@ -732,10 +734,11 @@ gvs_variable_sized_array_n_children (GVariantSerialised value)
return off / sizeof (current) - 1; \
}
-DEFINE_FIND_UNORDERED (guint8);
-DEFINE_FIND_UNORDERED (guint16);
-DEFINE_FIND_UNORDERED (guint32);
-DEFINE_FIND_UNORDERED (guint64);
+#define NO_CONVERSION(x) (x)
+DEFINE_FIND_UNORDERED (guint8, NO_CONVERSION);
+DEFINE_FIND_UNORDERED (guint16, GUINT16_FROM_LE);
+DEFINE_FIND_UNORDERED (guint32, GUINT32_FROM_LE);
+DEFINE_FIND_UNORDERED (guint64, GUINT64_FROM_LE);
static GVariantSerialised
gvs_variable_sized_array_get_child (GVariantSerialised value,
--
GitLab

199
SOURCES/3163.patch
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@ -0,0 +1,199 @@ @@ -0,0 +1,199 @@
From 78da5faccb3e065116b75b3ff87ff55381da6c76 Mon Sep 17 00:00:00 2001
From: Philip Withnall <pwithnall@endlessos.org>
Date: Thu, 15 Dec 2022 13:00:39 +0000
Subject: [PATCH 1/2] =?UTF-8?q?gvariant:=20Check=20offset=20table=20doesn?=
=?UTF-8?q?=E2=80=99t=20fall=20outside=20variant=20bounds?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When dereferencing the first entry in the offset table for a tuple,
check that it doesn’t fall outside the bounds of the variant first.

This prevents an out-of-bounds read from some non-normal tuples.

This bug was introduced in commit 73d0aa81c2575a5c9ae77d.

Includes a unit test, although the test will likely only catch the
original bug if run with asan enabled.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Fixes: #2840
oss-fuzz#54302
---
glib/gvariant-serialiser.c | 12 ++++++--
glib/tests/gvariant.c | 63 ++++++++++++++++++++++++++++++++++++++
2 files changed, 72 insertions(+), 3 deletions(-)

diff --git a/glib/gvariant-serialiser.c b/glib/gvariant-serialiser.c
index f443c2eb85..4e4a73ad17 100644
--- a/glib/gvariant-serialiser.c
+++ b/glib/gvariant-serialiser.c
@@ -984,7 +984,8 @@ gvs_tuple_get_member_bounds (GVariantSerialised value,
member_info = g_variant_type_info_member_info (value.type_info, index_);
- if (member_info->i + 1)
+ if (member_info->i + 1 &&
+ offset_size * (member_info->i + 1) <= value.size)
member_start = gvs_read_unaligned_le (value.data + value.size -
offset_size * (member_info->i + 1),
offset_size);
@@ -995,7 +996,8 @@ gvs_tuple_get_member_bounds (GVariantSerialised value,
member_start &= member_info->b;
member_start |= member_info->c;
- if (member_info->ending_type == G_VARIANT_MEMBER_ENDING_LAST)
+ if (member_info->ending_type == G_VARIANT_MEMBER_ENDING_LAST &&
+ offset_size * (member_info->i + 1) <= value.size)
member_end = value.size - offset_size * (member_info->i + 1);
else if (member_info->ending_type == G_VARIANT_MEMBER_ENDING_FIXED)
@@ -1006,11 +1008,15 @@ gvs_tuple_get_member_bounds (GVariantSerialised value,
member_end = member_start + fixed_size;
}
- else /* G_VARIANT_MEMBER_ENDING_OFFSET */
+ else if (member_info->ending_type == G_VARIANT_MEMBER_ENDING_OFFSET &&
+ offset_size * (member_info->i + 2) <= value.size)
member_end = gvs_read_unaligned_le (value.data + value.size -
offset_size * (member_info->i + 2),
offset_size);
+ else /* invalid */
+ member_end = G_MAXSIZE;
+
if (out_member_start != NULL)
*out_member_start = member_start;
if (out_member_end != NULL)
diff --git a/glib/tests/gvariant.c b/glib/tests/gvariant.c
index b360888e4d..98c51a1d75 100644
--- a/glib/tests/gvariant.c
+++ b/glib/tests/gvariant.c
@@ -5576,6 +5576,67 @@ test_normal_checking_tuple_offsets4 (void)
g_variant_unref (variant);
}
+/* This is a regression test that dereferencing the first element in the offset
+ * table doesn’t dereference memory before the start of the GVariant. The first
+ * element in the offset table gives the offset of the final member in the
+ * tuple (the offset table is stored in reverse), and the position of this final
+ * member is needed to check that none of the tuple members overlap with the
+ * offset table
+ *
+ * See https://gitlab.gnome.org/GNOME/glib/-/issues/2840 */
+static void
+test_normal_checking_tuple_offsets5 (void)
+{
+ /* A tuple of type (sss) in normal form would have an offset table with two
+ * entries:
+ * - The first entry (lowest index in the table) gives the offset of the
+ * third `s` in the tuple, as the offset table is reversed compared to the
+ * tuple members.
+ * - The second entry (highest index in the table) gives the offset of the
+ * second `s` in the tuple.
+ * - The offset of the first `s` in the tuple is always 0.
+ *
+ * See §2.5.4 (Structures) of the GVariant specification for details, noting
+ * that the table is only layed out this way because all three members of the
+ * tuple have non-fixed sizes.
+ *
+ * It’s not clear whether the 0xaa data of this variant is part of the strings
+ * in the tuple, or part of the offset table. It doesn’t really matter. This
+ * is a regression test to check that the code to validate the offset table
+ * doesn’t unconditionally try to access the first entry in the offset table
+ * by subtracting the table size from the end of the GVariant data.
+ *
+ * In this non-normal case, that would result in an address off the start of
+ * the GVariant data, and an out-of-bounds read, because the GVariant is one
+ * byte long, but the offset table is calculated as two bytes long (with 1B
+ * sized entries) from the tuple’s type.
+ */
+ const GVariantType *data_type = G_VARIANT_TYPE ("(sss)");
+ const guint8 data[] = { 0xaa };
+ gsize size = sizeof (data);
+ GVariant *variant = NULL;
+ GVariant *normal_variant = NULL;
+ GVariant *expected = NULL;
+
+ g_test_bug ("https://gitlab.gnome.org/GNOME/glib/-/issues/2840");
+
+ variant = g_variant_new_from_data (data_type, data, size, FALSE, NULL, NULL);
+ g_assert_nonnull (variant);
+
+ g_assert_false (g_variant_is_normal_form (variant));
+
+ normal_variant = g_variant_get_normal_form (variant);
+ g_assert_nonnull (normal_variant);
+
+ expected = g_variant_new_parsed ("('', '', '')");
+ g_assert_cmpvariant (expected, variant);
+ g_assert_cmpvariant (expected, normal_variant);
+
+ g_variant_unref (expected);
+ g_variant_unref (normal_variant);
+ g_variant_unref (variant);
+}
+
/* Test that an otherwise-valid serialised GVariant is considered non-normal if
* its offset table entries are too wide.
*
@@ -5827,6 +5888,8 @@ main (int argc, char **argv)
test_normal_checking_tuple_offsets3);
g_test_add_func ("/gvariant/normal-checking/tuple-offsets4",
test_normal_checking_tuple_offsets4);
+ g_test_add_func ("/gvariant/normal-checking/tuple-offsets5",
+ test_normal_checking_tuple_offsets5);
g_test_add_func ("/gvariant/normal-checking/tuple-offsets/minimal-sized",
test_normal_checking_tuple_offsets_minimal_sized);
g_test_add_func ("/gvariant/normal-checking/empty-object-path",
--
GitLab


From 21a204147b16539b3eda3143b32844c49e29f4d4 Mon Sep 17 00:00:00 2001
From: Philip Withnall <pwithnall@endlessos.org>
Date: Thu, 15 Dec 2022 16:49:28 +0000
Subject: [PATCH 2/2] gvariant: Propagate trust when getting a child of a
serialised variant

If a variant is trusted, that means all its children are trusted, so
ensure that their checked offsets are set as such.

This allows a lot of the offset table checks to be avoided when getting
children from trusted serialised tuples, which speeds things up.

No unit test is included because this is just a performance fix. If
there are other slownesses, or regressions, in serialised `GVariant`
performance, the fuzzing setup will catch them like it did this one.

This change does reduce the time to run the oss-fuzz reproducer from 80s
to about 0.7s on my machine.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Fixes: #2841
oss-fuzz#54314
---
glib/gvariant-core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/glib/gvariant-core.c b/glib/gvariant-core.c
index f441c4757e..4778022829 100644
--- a/glib/gvariant-core.c
+++ b/glib/gvariant-core.c
@@ -1198,8 +1198,8 @@ g_variant_get_child_value (GVariant *value,
child->contents.serialised.bytes =
g_bytes_ref (value->contents.serialised.bytes);
child->contents.serialised.data = s_child.data;
- child->contents.serialised.ordered_offsets_up_to = s_child.ordered_offsets_up_to;
- child->contents.serialised.checked_offsets_up_to = s_child.checked_offsets_up_to;
+ child->contents.serialised.ordered_offsets_up_to = (value->state & STATE_TRUSTED) ? G_MAXSIZE : s_child.ordered_offsets_up_to;
+ child->contents.serialised.checked_offsets_up_to = (value->state & STATE_TRUSTED) ? G_MAXSIZE : s_child.checked_offsets_up_to;
return child;
}
--
GitLab

141
SOURCES/3272.patch
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From 059f4f3999f1de506417611318c6f27db57fb689 Mon Sep 17 00:00:00 2001
From: Marius Vollmer <mvollmer@redhat.com>
Date: Mon, 13 Feb 2023 14:12:52 +0200
Subject: [PATCH] gdbus: Never buffer reads during server authentication

Otherwise, the content of the buffer is thrown away when switching
from reading via a GDataInputStream to unbuffered reads when waiting
for the "BEGIN" line.

(The code already tried to protect against over-reading like this by
using unbuffered reads for the last few lines of the auth protocol,
but it might already be too late at that point. The buffer of the
GDataInputStream might already contain the "BEGIN" line for example.)

This matters when connecting a sd-bus client directly to a GDBus
client. A sd-bus client optimistically sends the whole auth
conversation in one go without waiting for intermediate replies. This
is done to improve performance for the many short-lived connections
that are typically made.
---
gio/gdbusauth.c | 50 ++++++++++++++++++++++++++++++-------------------
1 file changed, 31 insertions(+), 19 deletions(-)

diff --git a/gio/gdbusauth.c b/gio/gdbusauth.c
index c430f0cf0..17c7d47b7 100644
--- a/gio/gdbusauth.c
+++ b/gio/gdbusauth.c
@@ -933,7 +933,6 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
{
gboolean ret;
ServerState state;
- GDataInputStream *dis;
GDataOutputStream *dos;
GError *local_error;
gchar *line;
@@ -949,7 +948,6 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
_g_dbus_auth_add_mechs (auth, observer);
ret = FALSE;
- dis = NULL;
dos = NULL;
mech = NULL;
negotiated_capabilities = 0;
@@ -965,13 +963,18 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
goto out;
}
- dis = G_DATA_INPUT_STREAM (g_data_input_stream_new (g_io_stream_get_input_stream (auth->priv->stream)));
+ /* We use an extremely slow (but reliable) line reader for input
+ * instead of something buffered - this basically does a recvfrom()
+ * system call per character
+ *
+ * (the problem with using GDataInputStream's read_line is that
+ * because of buffering it might start reading into the first D-Bus
+ * message that appears after "BEGIN\r\n"....)
+ */
+
dos = G_DATA_OUTPUT_STREAM (g_data_output_stream_new (g_io_stream_get_output_stream (auth->priv->stream)));
- g_filter_input_stream_set_close_base_stream (G_FILTER_INPUT_STREAM (dis), FALSE);
g_filter_output_stream_set_close_base_stream (G_FILTER_OUTPUT_STREAM (dos), FALSE);
- g_data_input_stream_set_newline_type (dis, G_DATA_STREAM_NEWLINE_TYPE_CR_LF);
-
/* read the NUL-byte, possibly with credentials attached */
#ifdef G_OS_UNIX
#ifndef G_CREDENTIALS_PREFER_MESSAGE_PASSING
@@ -1010,11 +1013,22 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
}
else
{
+ gchar c;
+ gssize num_read;
+
local_error = NULL;
- (void)g_data_input_stream_read_byte (dis, cancellable, &local_error);
- if (local_error != NULL)
+ num_read = g_input_stream_read (g_io_stream_get_input_stream (auth->priv->stream),
+ &c, 1,
+ cancellable, &local_error);
+ if (num_read != 1 || local_error != NULL)
{
- g_propagate_error (error, local_error);
+ if (local_error == NULL)
+ g_set_error_literal (error,
+ G_IO_ERROR,
+ G_IO_ERROR_FAILED,
+ _ ("Unexpected lack of content trying to read a byte"));
+ else
+ g_propagate_error (error, local_error);
goto out;
}
}
@@ -1050,7 +1064,10 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
{
case SERVER_STATE_WAITING_FOR_AUTH:
debug_print ("SERVER: WaitingForAuth");
- line = _my_g_data_input_stream_read_line (dis, &line_length, cancellable, error);
+ line = _my_g_input_stream_read_line_safe (g_io_stream_get_input_stream (auth->priv->stream),
+ &line_length,
+ cancellable,
+ error);
debug_print ("SERVER: WaitingForAuth, read '%s'", line);
if (line == NULL)
goto out;
@@ -1260,7 +1277,10 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
case SERVER_STATE_WAITING_FOR_DATA:
debug_print ("SERVER: WaitingForData");
- line = _my_g_data_input_stream_read_line (dis, &line_length, cancellable, error);
+ line = _my_g_input_stream_read_line_safe (g_io_stream_get_input_stream (auth->priv->stream),
+ &line_length,
+ cancellable,
+ error);
debug_print ("SERVER: WaitingForData, read '%s'", line);
if (line == NULL)
goto out;
@@ -1299,13 +1319,6 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
case SERVER_STATE_WAITING_FOR_BEGIN:
debug_print ("SERVER: WaitingForBegin");
- /* Use extremely slow (but reliable) line reader - this basically
- * does a recvfrom() system call per character
- *
- * (the problem with using GDataInputStream's read_line is that because of
- * buffering it might start reading into the first D-Bus message that
- * appears after "BEGIN\r\n"....)
- */
line = _my_g_input_stream_read_line_safe (g_io_stream_get_input_stream (auth->priv->stream),
&line_length,
cancellable,
@@ -1364,7 +1377,6 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
out:
g_clear_object (&mech);
- g_clear_object (&dis);
g_clear_object (&dos);
g_clear_object (&own_credentials);
--
2.41.0

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