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nixpkgs/pkgs/development/libraries/libgksu/libgksu-2.0.12-revert-forkpty.patch
José Romildo Malaquias ba9bfd39ad New packages: libgksu, gksu
2014-08-07 01:10:11 +02:00

360 lines
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diff --exclude-from=/home/dang/.scripts/diffrc -up -ruN libgksu-2.0.12.orig/libgksu/libgksu.c libgksu-2.0.12/libgksu/libgksu.c
--- libgksu-2.0.12.orig/libgksu/libgksu.c 2009-06-29 13:48:24.000000000 -0400
+++ libgksu-2.0.12/libgksu/libgksu.c 2010-01-12 07:32:10.450657456 -0500
@@ -1,7 +1,6 @@
/*
* Gksu -- a library providing access to su functionality
* Copyright (C) 2004-2009 Gustavo Noronha Silva
- * Portions Copyright (C) 2009 VMware, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -56,9 +55,6 @@
static void
gksu_context_launch_complete (GksuContext *context);
-static void
-read_line (int fd, gchar *buffer, int n);
-
GType
gksu_error_get_type (void)
{
@@ -2009,8 +2005,6 @@ gksu_su_fuller (GksuContext *context,
for (i = 0 ; cmd[i] != NULL ; i++)
g_free (cmd[i]);
g_free(cmd);
-
- _exit(1);
}
else if (pid == -1)
{
@@ -2125,10 +2119,10 @@ gksu_su_fuller (GksuContext *context,
/* drop the \n echoed on password entry if su did request
a password */
if (password_needed)
- read_line (fdpty, buf, 255);
+ read (fdpty, buf, 255);
if (context->debug)
fprintf (stderr, "DEBUG (run:post-after-pass) buf: -%s-\n", buf);
- read_line (fdpty, buf, 255);
+ read (fdpty, buf, 255);
if (context->debug)
fprintf (stderr, "DEBUG (run:post-after-pass) buf: -%s-\n", buf);
}
@@ -2142,9 +2136,7 @@ gksu_su_fuller (GksuContext *context,
{
int retval = 0;
- /* Red Hat's su shows the full path to su in its error messages. */
- if (!strncmp (buf, "su:", 3) ||
- !strncmp (buf, "/bin/su:", 7))
+ if (!strncmp (buf, "su", 2))
{
gchar **strings;
@@ -2155,11 +2147,7 @@ gksu_su_fuller (GksuContext *context,
}
strings = g_strsplit (buf, ":", 2);
-
- /* Red Hat and Fedora use 'incorrect password'. */
- if (strings[1] &&
- (g_str_has_prefix(strings[1], " Authentication failure") ||
- g_str_has_prefix(strings[1], " incorrect password")))
+ if (strings[1] && !strncmp (strings[1], " Authentication failure", 23))
{
if (used_gnome_keyring)
g_set_error (error, gksu_quark,
@@ -2473,12 +2461,6 @@ gksu_sudo_fuller (GksuContext *context,
{
char **cmd;
char buffer[256] = {0};
- char *child_stderr = NULL;
- /* This command is used to gain a token */
- char *const verifycmd[] =
- {
- "/usr/bin/sudo", "-p", "GNOME_SUDO_PASS", "-v", NULL
- };
int argcount = 8;
int i, j;
@@ -2489,8 +2471,9 @@ gksu_sudo_fuller (GksuContext *context,
pid_t pid;
int status;
- FILE *fdfile = NULL;
- int fdpty = -1;
+ FILE *infile, *outfile;
+ int parent_pipe[2]; /* For talking to the parent */
+ int child_pipe[2]; /* For talking to the child */
context->sudo_mode = TRUE;
@@ -2565,10 +2548,6 @@ gksu_sudo_fuller (GksuContext *context,
cmd[argcount] = g_strdup("-S");
argcount++;
- /* Make sudo noninteractive (we should already have a token) */
- cmd[argcount] = g_strdup("-n");
- argcount++;
-
/* Make sudo use next arg as prompt */
cmd[argcount] = g_strdup("-p");
argcount++;
@@ -2647,21 +2626,26 @@ gksu_sudo_fuller (GksuContext *context,
fprintf (stderr, "cmd[%d]: %s\n", i, cmd[i]);
}
- pid = forkpty(&fdpty, NULL, NULL, NULL);
- if (pid == 0)
+ if ((pipe(parent_pipe)) == -1)
{
- // Child
- setsid(); // make us session leader
-
- execv(verifycmd[0], verifycmd);
+ g_set_error (error, gksu_quark, GKSU_ERROR_PIPE,
+ _("Error creating pipe: %s"),
+ strerror(errno));
+ sudo_reset_xauth (context, xauth, xauth_env);
+ return FALSE;
+ }
- g_set_error (error, gksu_quark, GKSU_ERROR_EXEC,
- _("Failed to exec new process: %s"),
+ if ((pipe(child_pipe)) == -1)
+ {
+ g_set_error (error, gksu_quark, GKSU_ERROR_PIPE,
+ _("Error creating pipe: %s"),
strerror(errno));
sudo_reset_xauth (context, xauth, xauth_env);
return FALSE;
}
- else if (pid == -1)
+
+ pid = fork();
+ if (pid == -1)
{
g_set_error (error, gksu_quark, GKSU_ERROR_FORK,
_("Failed to fork new process: %s"),
@@ -2669,26 +2653,56 @@ gksu_sudo_fuller (GksuContext *context,
sudo_reset_xauth (context, xauth, xauth_env);
return FALSE;
}
+ else if (pid == 0)
+ {
+ // Child
+ setsid(); // make us session leader
+ close(child_pipe[1]);
+ dup2(child_pipe[0], STDIN_FILENO);
+ dup2(parent_pipe[1], STDERR_FILENO);
+ execv(cmd[0], cmd);
+
+ g_set_error (error, gksu_quark, GKSU_ERROR_EXEC,
+ _("Failed to exec new process: %s"),
+ strerror(errno));
+ sudo_reset_xauth (context, xauth, xauth_env);
+ return FALSE;
+ }
else
{
gint counter = 0;
gchar *cmdline = NULL;
- struct termios tio;
// Parent
- fdfile = fdopen(fdpty, "w+");
+ close(parent_pipe[1]);
- /* make sure we notice that ECHO is turned off, if it gets
- turned off */
- tcgetattr (fdpty, &tio);
- for (counter = 0; (tio.c_lflag & ECHO) && counter < 15; counter++)
- {
- usleep (1000);
- tcgetattr (fdpty, &tio);
- }
+ infile = fdopen(parent_pipe[0], "r");
+ if (!infile)
+ {
+ g_set_error (error, gksu_quark, GKSU_ERROR_PIPE,
+ _("Error opening pipe: %s"),
+ strerror(errno));
+ sudo_reset_xauth (context, xauth, xauth_env);
+ return FALSE;
+ }
- fcntl (fdpty, F_SETFL, O_NONBLOCK);
+ outfile = fdopen(child_pipe[1], "w");
+ if (!outfile)
+ {
+ g_set_error (error, gksu_quark, GKSU_ERROR_PIPE,
+ _("Error opening pipe: %s"),
+ strerror(errno));
+ sudo_reset_xauth (context, xauth, xauth_env);
+ return FALSE;
+ }
+
+ /*
+ we are expecting to receive a GNOME_SUDO_PASS
+ if we don't there are two possibilities: an error
+ or a password is not needed
+ */
+ fcntl (parent_pipe[0], F_SETFL, O_NONBLOCK);
{ /* no matter if we can read, since we're using
O_NONBLOCK; this is just to avoid the prompt
@@ -2697,11 +2711,11 @@ gksu_sudo_fuller (GksuContext *context,
struct timeval tv;
FD_ZERO(&rfds);
- FD_SET(fdpty, &rfds);
+ FD_SET(parent_pipe[0], &rfds);
tv.tv_sec = 1;
tv.tv_usec = 0;
- select (fdpty + 1, &rfds, NULL, NULL, &tv);
+ select (parent_pipe[0] + 1, &rfds, NULL, NULL, &tv);
}
/* Try hard to find the prompt; it may happen that we're
@@ -2713,7 +2727,7 @@ gksu_sudo_fuller (GksuContext *context,
if (strncmp (buffer, "GNOME_SUDO_PASS", 15) == 0)
break;
- read_line (fdpty, buffer, 256);
+ read_line (parent_pipe[0], buffer, 256);
if (context->debug)
fprintf (stderr, "buffer: -%s-\n", buffer);
@@ -2747,17 +2761,18 @@ gksu_sudo_fuller (GksuContext *context,
usleep (1000);
- write (fdpty, password, strlen(password) + 1);
- write (fdpty, "\n", 1);
+ fprintf (outfile, "%s\n", password);
+ fclose (outfile);
nullify_password (password);
- fcntl(fdpty, F_SETFL, fcntl(fdpty, F_GETFL) & ~O_NONBLOCK);
+ /* turn NONBLOCK off */
+ fcntl(parent_pipe[0], F_SETFL, fcntl(parent_pipe[0], F_GETFL) & ~O_NONBLOCK);
/* ignore the first newline that comes right after sudo receives
the password */
- fgets (buffer, 255, fdfile);
- /* this is the status we are interested in */
- fgets (buffer, 255, fdfile);
+ fgets (buffer, 255, infile);
+ /* this is the status we are interessted in */
+ fgets (buffer, 255, infile);
}
else
{
@@ -2766,7 +2781,7 @@ gksu_sudo_fuller (GksuContext *context,
fprintf (stderr, "No password prompt found; we'll assume we don't need a password.\n");
/* turn NONBLOCK off, also if have no prompt */
- fcntl(fdpty, F_SETFL, fcntl(fdpty, F_GETFL) & ~O_NONBLOCK);
+ fcntl(parent_pipe[0], F_SETFL, fcntl(parent_pipe[0], F_GETFL) & ~O_NONBLOCK);
should_display = gconf_client_get_bool (context->gconf_client,
BASE_PATH "display-no-pass-info", NULL);
@@ -2785,9 +2800,14 @@ gksu_sudo_fuller (GksuContext *context,
fprintf (stderr, "%s", buffer);
}
- if (g_str_has_prefix (buffer, "Sorry, try again."))
+ if (!strcmp (buffer, "Sorry, try again.\n"))
g_set_error (error, gksu_quark, GKSU_ERROR_WRONGPASS,
_("Wrong password."));
+ else if (!strncmp (buffer, "Sorry, user ", 12))
+ g_set_error (error, gksu_quark, GKSU_ERROR_NOT_ALLOWED,
+ _("The underlying authorization mechanism (sudo) "
+ "does not allow you to run this program. Contact "
+ "the system administrator."));
else
{
gchar *haystack = buffer;
@@ -2805,10 +2825,6 @@ gksu_sudo_fuller (GksuContext *context,
}
}
- /* If we have an error, let's just stop sudo right there. */
- if (error)
- close(fdpty);
-
cmdline = g_strdup("sudo");
/* wait for the child process to end or become something other
than sudo */
@@ -2825,23 +2841,17 @@ gksu_sudo_fuller (GksuContext *context,
if (context->sn_context)
gksu_context_launch_complete (context);
+ while (read (parent_pipe[0], buffer, 255) > 0)
+ {
+ fprintf (stderr, "%s", buffer);
+ bzero(buffer, 256);
+ }
+
/* if the process is still active waitpid() on it */
if (pid_exited != pid)
waitpid(pid, &status, 0);
sudo_reset_xauth (context, xauth, xauth_env);
- /*
- * Did token acquisition succeed? If so, spawn sudo in
- * non-interactive mode. It should either succeed or die
- * immediately if you're not allowed to run the command.
- */
- if (WEXITSTATUS(status) == 0)
- {
- g_spawn_sync(NULL, cmd, NULL, 0, NULL, NULL,
- NULL, &child_stderr, &status,
- error);
- }
-
if (exit_status)
{
if (WIFEXITED(status)) {
@@ -2853,13 +2863,6 @@ gksu_sudo_fuller (GksuContext *context,
if (WEXITSTATUS(status))
{
- if (g_str_has_prefix(child_stderr, "Sorry, user "))
- {
- g_set_error (error, gksu_quark, GKSU_ERROR_NOT_ALLOWED,
- _("The underlying authorization mechanism (sudo) "
- "does not allow you to run this program. Contact "
- "the system administrator."));
- }
if(cmdline)
{
/* sudo already exec()ed something else, don't report
@@ -2868,7 +2871,6 @@ gksu_sudo_fuller (GksuContext *context,
if (!g_str_has_suffix (cmdline, "sudo"))
{
g_free (cmdline);
- g_free (child_stderr);
return FALSE;
}
g_free (cmdline);
@@ -2881,11 +2883,11 @@ gksu_sudo_fuller (GksuContext *context,
}
}
- fprintf(stderr, child_stderr);
- g_free(child_stderr);
-
/* if error is set we have found an error condition */
- return (error == NULL);
+ if (error)
+ return FALSE;
+
+ return TRUE;
}
/**
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