chantra / rpms / rpm

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From b62a75b137bde84ec8bac92c0238502b422c56ce Mon Sep 17 00:00:00 2001
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From: Panu Matilainen <pmatilai@redhat.com>
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Date: Tue, 24 Jun 2014 14:37:38 +0300
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Subject: [PATCH] Initialize plugins based on DSO discovery
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- %__transaction_plugins style configuration is problematic for plugins
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  because we want plugins to be, well, pluggable. As in drop-in to
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  enable, which is not achievable with a single macro entry. Look up
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  all DSO's from the plugin dir and enable if a matching
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  %__transaction_foo macro is defined.
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- This isn't optimal but it'll buy us the drop-in capability, which
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  is what matters most right now. We'll want to have forcability as
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  well later on (ie it should be possible to require given plugins
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  to be present)
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Conflicts:
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	lib/transaction.c
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---
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 lib/rpmplugins.c  |  3 ++-
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 lib/transaction.c | 34 +++++++++++++++++-----------------
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 2 files changed, 19 insertions(+), 18 deletions(-)
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diff --git a/lib/rpmplugins.c b/lib/rpmplugins.c
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index 7285f54..4e600db 100644
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--- a/lib/rpmplugins.c
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+++ b/lib/rpmplugins.c
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@@ -84,8 +84,9 @@ rpmRC rpmpluginsAddPlugin(rpmPlugins plugins, const char *type, const char *name
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     path = rpmExpand("%{?__", type, "_", name, "}", NULL);
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     if (!path || rstreq(path, "")) {
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-	rpmlog(RPMLOG_ERR, _("Failed to expand %%__%s_%s macro\n"),
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+	rpmlog(RPMLOG_DEBUG, _("Plugin %%__%s_%s not configured\n"),
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 	       type, name);
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+	rc = RPMRC_NOTFOUND;
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 	goto exit;
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     }
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diff --git a/lib/transaction.c b/lib/transaction.c
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index 08a5643..386f107 100644
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--- a/lib/transaction.c
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+++ b/lib/transaction.c
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@@ -1440,29 +1440,29 @@ static int rpmtsProcess(rpmts ts)
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 static rpmRC rpmtsSetupTransactionPlugins(rpmts ts)
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 {
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     rpmRC rc = RPMRC_OK;
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-    char *plugins = NULL, *plugin = NULL;
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-    const char *delims = ",";
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+    ARGV_t files = NULL;
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+    int nfiles = 0;
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+    char *dsoPath = NULL;
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-    plugins = rpmExpand("%{?__transaction_plugins}", NULL);
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-    if (!plugins || rstreq(plugins, "")) {
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-	goto exit;
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-    }
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+    /*
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+     * Assume allocated equals initialized. There are some oddball cases
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+     * (verification of non-installed package) where this is not true
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+     * currently but that's not a new issue.
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+     */
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-    plugin = strtok(plugins, delims);
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-    while(plugin != NULL) {
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-	rpmlog(RPMLOG_DEBUG, "plugin is %s\n", plugin);
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-	if (!rpmpluginsPluginAdded(ts->plugins, (const char*)plugin)) {
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-	    if (rpmpluginsAddPlugin(ts->plugins, "transaction",
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-				    (const char*)plugin) == RPMRC_FAIL) {
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-		/* any configured plugin failing to load is a failure */
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+    dsoPath = rpmExpand("%{__plugindir}/*.so", NULL);
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+    if (rpmGlob(dsoPath, &nfiles, &files) == 0) {
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+	rpmPlugins tsplugins = rpmtsPlugins(ts);
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+	for (int i = 0; i < nfiles; i++) {
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+	    char *bn = basename(files[i]);
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+	    bn[strlen(bn)-strlen(".so")] = '\0';
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+	    if (rpmpluginsAddPlugin(tsplugins, "transaction", bn) == RPMRC_FAIL)
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 		rc = RPMRC_FAIL;
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-	    }
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 	}
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-	plugin = strtok(NULL, delims);
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+	files = argvFree(files);
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     }
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+    free(dsoPath);
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-exit:
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-    free(plugins);
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     return rc;
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 }
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-- 
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2.1.0
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