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Add wrapper functions for dlopen() et al so that we can support

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statically compiling in the sudoers plugin but still allow other
plugins to be loaded.  The new --enable-static-sudoers configure
option will cause the sudoers plugin to be compiled statically into
the sudo binary.  This does not prevent other plugins from being
loaded as per sudo.conf.
This commit is contained in:
Todd C. Miller
2013-11-22 16:35:15 -07:00
parent 0fb17059a6
commit 12f3bdf60e
26 changed files with 579 additions and 369 deletions
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20
plugins/sudoers/group_plugin.c
View File

@@ -40,20 +40,12 @@
#ifdef TIME_WITH_SYS_TIME
# include <time.h>
#endif
#ifdef HAVE_DLOPEN
# include <dlfcn.h>
#else
# include "compat/dlfcn.h"
#endif
#include <ctype.h>
#include <errno.h>
#include <pwd.h>
#include "sudoers.h"
#ifndef RTLD_GLOBAL
# define RTLD_GLOBAL 0
#endif
#include "sudo_dso.h"
#if defined(HAVE_DLOPEN) || defined(HAVE_SHL_LOAD)
@@ -108,12 +100,12 @@ group_plugin_load(char *plugin_info)
}
/* Open plugin and map in symbol. */
group_handle = dlopen(path, RTLD_LAZY|RTLD_GLOBAL);
group_handle = sudo_dso_load(path, SUDO_DSO_LAZY|SUDO_DSO_GLOBAL);
if (!group_handle) {
warningx(U_("unable to dlopen %s: %s"), path, dlerror());
warningx(U_("unable to load %s: %s"), path, sudo_dso_strerror());
goto done;
}
group_plugin = dlsym(group_handle, "group_plugin");
group_plugin = sudo_dso_findsym(group_handle, "group_plugin");
if (group_plugin == NULL) {
warningx(U_("unable to find symbol \"group_plugin\" in %s"), path);
goto done;
@@ -157,7 +149,7 @@ done:
if (rc != true) {
if (group_handle != NULL) {
dlclose(group_handle);
sudo_dso_unload(group_handle);
group_handle = NULL;
group_plugin = NULL;
}
@@ -176,7 +168,7 @@ group_plugin_unload(void)
group_plugin = NULL;
}
if (group_handle != NULL) {
dlclose(group_handle);
sudo_dso_unload(group_handle);
group_handle = NULL;
}
debug_return;