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authorUlrich Sibiller <uli42@gmx.de>2017-07-22 22:21:05 +0200
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2018-12-19 12:37:08 +0100
commit522106e207e7230da5e62fb88f2e47742fdf1b21 (patch)
tree483d3b752d4771ca8b822574aea6f60e62dccc4d /nx-X11/programs/Xserver
parenta8c65ab6290d9516b733273098db50721e84bcec (diff)
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nxagent: bypass X2go's keyboard configuration hack
If X2go runs in auto keyboard mode it will pass keyboard=null/null to the agent and set the keyboard afterwards with setxkbmap. This patch lets nxagent handle that situation internally (null/null will be interpreted as clone) and disables X2go's mechanism (by creating a dir that effectively blocks it; see x2gosetkeyboard) This is only activated if the agent is run as "x2goagent". Fixes ArcticaProject/nx-libs#368
Diffstat (limited to 'nx-X11/programs/Xserver')
-rw-r--r--nx-X11/programs/Xserver/hw/nxagent/Keyboard.c111
-rw-r--r--nx-X11/programs/Xserver/hw/nxagent/Reconnect.c10
-rw-r--r--nx-X11/programs/Xserver/hw/nxagent/man/nxagent.13
3 files changed, 92 insertions, 32 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Keyboard.c b/nx-X11/programs/Xserver/hw/nxagent/Keyboard.c
index cfe73ac5b..af27c6e28 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Keyboard.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Keyboard.c
@@ -57,6 +57,7 @@ is" without express or implied warranty.
#include "Events.h"
#include "Options.h"
#include "Error.h"
+#include "Init.h"
#include "compext/Compext.h"
@@ -82,6 +83,7 @@ static void nxagentXkbGetNames(void);
void nxagentKeycodeConversionSetup(void);
+static void nxagentWriteKeyboardDir(void);
static void nxagentWriteKeyboardFile(char *rules, char *model, char *layout, char *variant, char *options);
#endif /* XKB */
@@ -751,6 +753,15 @@ XkbError:
fprintf(stderr, "nxagentKeyboardProc: nxagentKeyboard is [%s].\n", nxagentKeyboard ? nxagentKeyboard : "NULL");
#endif
+ if (nxagentX2go == 1 && nxagentKeyboard && (strcmp(nxagentKeyboard, "null/null") == 0))
+ {
+ #ifdef TEST
+ fprintf(stderr, "%s: changing nxagentKeyboard from [null/null] to [clone].\n", __func__);
+ #endif
+ free(nxagentKeyboard);
+ nxagentKeyboard = strdup("clone");
+ }
+
/*
from nxagent changelog:
2.0.22:
@@ -846,19 +857,6 @@ XkbError:
__func__, nxagentRemoteRules, nxagentRemoteModel, nxagentRemoteLayout, nxagentRemoteVariant, nxagentRemoteOptions);
#endif
- /*
- * Keyboard has always been tricky with nxagent. For that
- * reason X2Go offers "auto" keyboard configuration. You can
- * specify it in the client side session configuration. In
- * "auto" mode x2goserver expects nxagent to write the
- * remote keyboard config to a file on startup and
- * x2goserver would then pick that file and pass it to
- * setxkbmap. This functionality is obsoleted by the "clone"
- * stuff but we still need it because x2goserver does not
- * know about that yet. Once x2go starts using clone
- * we can drop this here.
- */
- nxagentWriteKeyboardFile(nxagentRemoteRules, nxagentRemoteModel, nxagentRemoteLayout, nxagentRemoteVariant, nxagentRemoteOptions);
/* Only setup keycode conversion if we are NOT in clone mode */
if (nxagentKeyboard && (strcmp(nxagentKeyboard, "clone") == 0))
@@ -868,10 +866,33 @@ XkbError:
free(layout); layout = strdup(nxagentRemoteLayout);
free(variant); variant = strdup(nxagentRemoteVariant);
free(options); options = strdup(nxagentRemoteOptions);
+ /*
+ * when cloning we do not want X2Go to set the keyboard
+ * via a keyboard file generated by nxagent. The defined
+ * method for switching that off is the creation of a dir
+ * instead of a file. Which is achieved by passing NULL to
+ * nxagentWriteKeyboardFile.
+ */
+ if (nxagentX2go == 1)
+ nxagentWriteKeyboardDir();
}
else
{
nxagentKeycodeConversionSetup();
+ /*
+ * Keyboard has always been tricky with nxagent. For that
+ * reason X2Go offers "auto" keyboard configuration. You can
+ * specify it in the client side session configuration. In
+ * "auto" mode x2goserver expects nxagent to write the
+ * remote keyboard config to a file on startup and
+ * x2goserver would then pick that file and pass it to
+ * setxkbmap. This functionality is obsoleted by the "clone"
+ * stuff but we still need it because x2goserver does not
+ * know about that yet. Once x2go starts using clone
+ * we can drop this here.
+ */
+ if (nxagentX2go == 1)
+ nxagentWriteKeyboardFile(nxagentRemoteRules, nxagentRemoteModel, nxagentRemoteLayout, nxagentRemoteVariant, nxagentRemoteOptions);
}
}
#ifdef DEBUG
@@ -1645,6 +1666,49 @@ static void writeKeyboardfileData(FILE *out, char *rules, char *model, char *lay
fprintf(out, "options=\",%s\"\n", options ? options : "");
}
+static char* getKeyboardFilePath(void)
+{
+ char *keyboard_file_path = NULL;
+ char *sessionpath = nxagentGetSessionPath();
+ if (sessionpath)
+ {
+ if ((asprintf(&keyboard_file_path, "%s/keyboard", sessionpath) == -1))
+ {
+ free(sessionpath);
+ FatalError("malloc for keyboard file path failed.");
+ }
+ free(sessionpath);
+ }
+ else
+ {
+ fprintf(stderr, "Warning: Failed to determine keyboard file path: SessionPath not defined\n");
+ }
+ return keyboard_file_path;
+}
+
+static void nxagentWriteKeyboardDir(void)
+{
+ char *keyboard_file_path = getKeyboardFilePath();
+
+ if (keyboard_file_path)
+ {
+ /*
+ * special case: if rules is NULL create a directory insteas of
+ * a file. This is the defined method to disable x2gosetkeyboard.
+ */
+ if (mkdir(keyboard_file_path, 0555) < 0)
+ {
+ int save_err = errno;
+ fprintf(stderr, "Warning: Failed to create keyboard blocking directory '%s': %s\n", keyboard_file_path, strerror(save_err));
+ }
+ else
+ {
+ fprintf(stderr, "Info: keyboard blocking directory created: '%s'\n", keyboard_file_path);
+ }
+ free(keyboard_file_path);
+ }
+}
+
static void nxagentWriteKeyboardFile(char *rules, char *model, char *layout, char *variant, char *options)
{
if (rules && rules[0] != '\0')
@@ -1653,21 +1717,14 @@ static void nxagentWriteKeyboardFile(char *rules, char *model, char *layout, cha
writeKeyboardfileData(stderr, rules, model, layout, variant, options);
#endif
- char *sessionpath = nxagentGetSessionPath();
- if (sessionpath)
+ char *keyboard_file_path = getKeyboardFilePath();
+
+ if (keyboard_file_path)
{
- char *keyboard_file_path = NULL;
FILE *keyboard_file;
- if ((asprintf(&keyboard_file_path, "%s/keyboard", sessionpath) == -1))
- {
- free(sessionpath);
- FatalError("malloc for keyboard file path failed.");
- }
- free(sessionpath);
if ((keyboard_file = fopen(keyboard_file_path, "w")))
{
writeKeyboardfileData(keyboard_file, rules, model, layout, variant, options);
-
fclose(keyboard_file);
fprintf(stderr, "Info: keyboard file created: '%s'\n", keyboard_file_path);
}
@@ -1678,14 +1735,6 @@ static void nxagentWriteKeyboardFile(char *rules, char *model, char *layout, cha
}
free(keyboard_file_path);
}
- else
- {
- fprintf(stderr, "Warning: Failed to create keyboard file: SessionPath not defined\n");
- }
- }
- else
- {
- fprintf(stderr, "Warning: Failed to create the keyboard file\n");
}
}
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c b/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c
index 91445a383..a921df6ca 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c
@@ -458,6 +458,16 @@ Bool nxagentReconnectSession(void)
nxagentProcessOptions(nxagentOptionsFilenameOrString);
+ if (nxagentKeyboard && (strcmp(nxagentKeyboard, "null/null") == 0))
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentReconnect: changing nxagentKeyboard from [null/null] to [clone].\n");
+ #endif
+
+ free(nxagentKeyboard);
+ nxagentKeyboard = strdup("clone");
+ }
+
if (nxagentReconnectDisplay(reconnectLossyLevel[DISPLAY_STEP]) == 0)
{
failedStep = DISPLAY_STEP;
diff --git a/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1 b/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1
index 938c2eb57..737d3609d 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1
+++ b/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1
@@ -623,7 +623,8 @@ protocol functions and clone them. This is the recommended setting. For
compatibility reasons it is not the default.
.TP 8
.I <model>/<layout>
-use the given model and layout. You can not modify keyboard rules,
+use the given model and layout. A value of \fInull/null\fR is equivalent to
+\fIclone\fR. You can not modify keyboard rules,
variant or options this way. Instead preset values are used. These are
\fIbase\fR for rules and empty strings for variant and options.
.TP 8