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lcdproc: backport upstream patches

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Backport some lcdproc patches from upstream, to fix the following issues.

  * Incorrect parsing of minus key in handler for client_add_key command
  * Segfault in handler for menu_add_item command

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Simon Dawson 2012-10-04 21:30:21 +00:00 committed by Peter Korsgaard
parent 23467d5e2c
commit 183b83e208
2 changed files with 57 additions and 0 deletions
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38
package/lcdproc/lcdproc-0.5.5-fix-client_add_key-for-minus.patch Normal file
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@ -0,0 +1,38 @@
Calling client_add_key as follows
client_add_key -
will fail. However using an explicit -shared option, like this:
client_add_key -shared -
will succeed. This is caused by a failure to parse the - key token, which is
mistaken for the first character of an option argument.
The client_add_key command also returns a spurious "success" message when a
malformed option is supplied.
This patch fixes both issues.
Signed-off-by: Simon Dawson <spdawson@gmail.com>
diff -Nurp a/server/commands/client_commands.c b/server/commands/client_commands.c
--- a/server/commands/client_commands.c 2011-08-14 13:29:16.000000000 +0100
+++ b/server/commands/client_commands.c 2012-10-05 07:50:40.357795535 +0100
@@ -181,7 +181,7 @@ client_add_key_func(Client *c, int argc,
}
argnr = 1;
- if (argv[argnr][0] == '-') {
+ if (argv[argnr][0] == '-' && strcmp(argv[argnr], "-") != 0) {
if (strcmp( argv[argnr], "-shared") == 0) {
exclusively = 0;
}
@@ -190,6 +190,7 @@ client_add_key_func(Client *c, int argc,
}
else {
sock_printf_error(c->sock, "Invalid option: %s\n", argv[argnr]);
+ return 0;
}
argnr++;
}

19
package/lcdproc/lcdproc-0.5.5-fix-menu-segfault.patch Normal file
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@ -0,0 +1,19 @@
Trying to add a menu item using menu_add_item causes a segmentation fault
in the LCDd server. This is caused by a read beyond the end of an array.
This patch adds a safety check on the size of the argument array.
Signed-off-by: Simon Dawson <spdawson@gmail.com>
diff -Nurp a/server/commands/menu_commands.c b/server/commands/menu_commands.c
--- a/server/commands/menu_commands.c 2011-08-14 13:29:16.000000000 +0100
+++ b/server/commands/menu_commands.c 2012-10-04 22:19:07.997409193 +0100
@@ -198,7 +198,7 @@ menu_add_item_func(Client *c, int argc,
/* call menu_set_item() with a temporarily allocated argv
* to process the remaining options */
- if ((argc > 5) || (argv[4][0] == '-')) {
+ if ((argc > 5) || ((argc == 5) && argv[4][0] == '-')) {
// menu_add_item <menuid> <newitemid> <type> [<text>]
// menu_set_item <menuid> <itemid> {<option>}+
int i, j;