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#include "system.h"
#include <rpm/rpmmacro.h>
#include <rpm/rpmtypes.h>
#include <rpm/rpmlog.h>
#include <rpm/rpmstring.h>
#include <rpm/rpmts.h>
#include "lib/rpmplugins.h"
#define STR1(x) #x
#define STR(x) STR1(x)
struct rpmPlugins_s {
void **handles;
ARGV_t names;
int count;
rpmts ts;
};
static int rpmpluginsGetPluginIndex(rpmPlugins plugins, const char *name)
{
int i;
for (i = 0; i < plugins->count; i++) {
if (rstreq(plugins->names[i], name)) {
return i;
}
}
return -1;
}
static int rpmpluginsHookIsSupported(void *handle, rpmPluginHook hook)
{
rpmPluginHook *supportedHooks =
(rpmPluginHook *) dlsym(handle, STR(PLUGIN_HOOKS));
return (*supportedHooks & hook);
}
int rpmpluginsPluginAdded(rpmPlugins plugins, const char *name)
{
return (rpmpluginsGetPluginIndex(plugins, name) >= 0);
}
rpmPlugins rpmpluginsNew(rpmts ts)
{
rpmPlugins plugins = xcalloc(1, sizeof(*plugins));
plugins->ts = ts;
return plugins;
}
rpmRC rpmpluginsAdd(rpmPlugins plugins, const char *name, const char *path,
const char *opts)
{
rpmPluginHook *supportedHooks;
char *error;
void *handle = dlopen(path, RTLD_LAZY);
if (!handle) {
rpmlog(RPMLOG_ERR, _("Failed to dlopen %s %s\n"), path, dlerror());
return RPMRC_FAIL;
}
/* make sure the plugin has the supported hooks flag */
supportedHooks = (rpmPluginHook *) dlsym(handle, STR(PLUGIN_HOOKS));
if ((error = dlerror()) != NULL) {
rpmlog(RPMLOG_ERR, _("Failed to resolve symbol %s: %s\n"),
STR(PLUGIN_HOOKS), error);
return RPMRC_FAIL;
}
argvAdd(&plugins->names, name);
plugins->handles = xrealloc(plugins->handles, (plugins->count + 1) * sizeof(*plugins->handles));
plugins->handles[plugins->count] = handle;
plugins->count++;
return rpmpluginsCallInit(plugins, name, opts);
}
rpmRC rpmpluginsAddCollectionPlugin(rpmPlugins plugins, const char *name)
{
char *path;
char *options;
rpmRC rc = RPMRC_FAIL;
path = rpmExpand("%{?__collection_", name, "}", NULL);
if (!path || rstreq(path, "")) {
rpmlog(RPMLOG_ERR, _("Failed to expand %%__collection_%s macro\n"),
name);
goto exit;
}
/* split the options from the path */
#define SKIPSPACE(s) { while (*(s) && risspace(*(s))) (s)++; }
#define SKIPNONSPACE(s) { while (*(s) && !risspace(*(s))) (s)++; }
options = path;
SKIPNONSPACE(options);
if (risspace(*options)) {
*options = '\0';
options++;
SKIPSPACE(options);
}
if (*options == '\0') {
options = NULL;
}
rc = rpmpluginsAdd(plugins, name, path, options);
exit:
_free(path);
return rc;
}
rpmPlugins rpmpluginsFree(rpmPlugins plugins)
{
int i;
for (i = 0; i < plugins->count; i++) {
rpmpluginsCallCleanup(plugins, plugins->names[i]);
dlclose(plugins->handles[i]);
}
plugins->handles = _free(plugins->handles);
plugins->names = argvFree(plugins->names);
plugins->ts = NULL;
_free(plugins);
return NULL;
}
/* Common define for all rpmpluginsCall* hook functions */
#define RPMPLUGINS_SET_HOOK_FUNC(hook) \
void *handle = NULL; \
int index; \
char * error; \
index = rpmpluginsGetPluginIndex(plugins, name); \
if (index < 0) { \
rpmlog(RPMLOG_ERR, _("Plugin %s not loaded\n"), name); \
return RPMRC_FAIL; \
} \
handle = plugins->handles[index]; \
if (!handle) { \
rpmlog(RPMLOG_ERR, _("Plugin %s not loaded\n"), name); \
return RPMRC_FAIL; \
} \
if (!rpmpluginsHookIsSupported(handle, hook)) { \
return RPMRC_OK; \
} \
*(void **)(&hookFunc) = dlsym(handle, STR(hook##_FUNC)); \
if ((error = dlerror()) != NULL) { \
rpmlog(RPMLOG_ERR, _("Failed to resolve %s plugin symbol %s: %s\n"), name, STR(hook##_FUNC), error); \
return RPMRC_FAIL; \
} \
if (rpmtsFlags(plugins->ts) & (RPMTRANS_FLAG_TEST | RPMTRANS_FLAG_JUSTDB)) { \
return RPMRC_OK; \
} \
rpmlog(RPMLOG_DEBUG, "Plugin: calling hook %s in %s plugin\n", STR(hook##_FUNC), name);
rpmRC rpmpluginsCallInit(rpmPlugins plugins, const char *name, const char *opts)
{
rpmRC (*hookFunc)(rpmts, const char *, const char *);
RPMPLUGINS_SET_HOOK_FUNC(PLUGINHOOK_INIT);
return hookFunc(plugins->ts, name, opts);
}
rpmRC rpmpluginsCallCleanup(rpmPlugins plugins, const char *name)
{
rpmRC (*hookFunc)(void);
RPMPLUGINS_SET_HOOK_FUNC(PLUGINHOOK_CLEANUP);
return hookFunc();
}
rpmRC rpmpluginsCallOpenTE(rpmPlugins plugins, const char *name, rpmte te)
{
rpmRC (*hookFunc)(rpmte);
RPMPLUGINS_SET_HOOK_FUNC(PLUGINHOOK_OPENTE);
return hookFunc(te);
}
rpmRC rpmpluginsCallCollectionPostAdd(rpmPlugins plugins, const char *name)
{
rpmRC (*hookFunc)(void);
RPMPLUGINS_SET_HOOK_FUNC(PLUGINHOOK_COLL_POST_ADD);
return hookFunc();
}
rpmRC rpmpluginsCallCollectionPostAny(rpmPlugins plugins, const char *name)
{
rpmRC (*hookFunc)(void);
RPMPLUGINS_SET_HOOK_FUNC(PLUGINHOOK_COLL_POST_ANY);
return hookFunc();
}
rpmRC rpmpluginsCallCollectionPreRemove(rpmPlugins plugins, const char *name)
{
rpmRC (*hookFunc)(void);
RPMPLUGINS_SET_HOOK_FUNC(PLUGINHOOK_COLL_PRE_REMOVE);
return hookFunc();
}
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