From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Peter Jones <pjones@redhat.com>

Date: Mon, 15 Oct 2018 15:08:33 -0400

Subject: [PATCH] blscfg: sort everything with rpm *package* comparison

This makes comparisons use the n-v-r tuple, and compare name with name,

version with version, and release with release.

Related: rhbz#1638103

Signed-off-by: Peter Jones <pjones@redhat.com>

---

 grub-core/commands/blscfg.c | 118 ++++++++++++++++++++++++++++++++++++++++----

 1 file changed, 108 insertions(+), 10 deletions(-)

diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c

index 3847572dabd..347128c9ddd 100644

--- a/grub-core/commands/blscfg.c

+++ b/grub-core/commands/blscfg.c

@@ -206,7 +206,7 @@ static int vercmp(const char * a, const char * b)

     int isnum;

     int ret = 0;

-  grub_dprintf("blscfg", "%s got here\n", __func__);

+    grub_dprintf("blscfg", "%s got here\n", __func__);

     if (!grub_strcmp(a, b))

 	    return 0;

@@ -315,6 +315,81 @@ finish:

     return ret;

 }

+/* returns name/version/release */

+/* NULL string pointer returned if nothing found */

+static void

+split_package_string (char *package_string, char **name,

+                     char **version, char **release)

+{

+  char *package_version, *package_release;

+

+  /* Release */

+  package_release = grub_strrchr (package_string, '-');

+

+  if (package_release != NULL)

+      *package_release++ = '\0';

+

+  *release = package_release;

+

+  if (name == NULL)

+    {

+      *version = package_string;

+    }

+  else

+    {

+      /* Version */

+      package_version = grub_strrchr(package_string, '-');

+

+      if (package_version != NULL)

+	*package_version++ = '\0';

+

+      *version = package_version;

+      /* Name */

+      *name = package_string;

+    }

+

+  /* Bubble up non-null values from release to name */

+  if (name != NULL && *name == NULL)

+    {

+      *name = (*version == NULL ? *release : *version);

+      *version = *release;

+      *release = NULL;

+    }

+  if (*version == NULL)

+    {

+      *version = *release;

+      *release = NULL;

+    }

+}

+

+static int

+split_cmp(char *nvr0, char *nvr1, int has_name)

+{

+  int ret = 0;

+  char *name0, *version0, *release0;

+  char *name1, *version1, *release1;

+

+  split_package_string(nvr0, has_name ? &name0 : NULL, &version0, &release0);

+  split_package_string(nvr1, has_name ? &name1 : NULL, &version1, &release1);

+

+  if (has_name)

+    {

+      ret = vercmp(name0 == NULL ? "" : name0,

+		   name1 == NULL ? "" : name1);

+      if (ret != 0)

+	return ret;

+    }

+

+  ret = vercmp(version0 == NULL ? "" : version0,

+	       version1 == NULL ? "" : version1);

+  if (ret != 0)

+    return ret;

+

+  ret = vercmp(release0 == NULL ? "" : release0,

+	       release1 == NULL ? "" : release1);

+  return ret;

+}

+

 /* return 1: p0 is newer than p1 */

 /*        0: p0 and p1 are the same version */

 /*       -1: p1 is newer than p0 */

@@ -323,18 +398,41 @@ static int bls_cmp(const void *p0, const void *p1, void *state)

   struct bls_entry * e0 = *(struct bls_entry **)p0;

   struct bls_entry * e1 = *(struct bls_entry **)p1;

   bool use_version = *(bool *)state;

-  const char *v0, *v1;

-  int r;

+  char *v0, *v1;

+  char *id0, *id1;

+  int l, r;

-  if (use_version) {

-    v0 = bls_get_val(e0, "version", NULL);

-    v1 = bls_get_val(e1, "version", NULL);

+  if (use_version)

+    {

+      v0 = grub_strdup(bls_get_val(e0, "version", NULL));

+      v1 = grub_strdup(bls_get_val(e1, "version", NULL));

-    if ((r = vercmp(v0, v1)) != 0)

-      return r;

-  }

+      r = split_cmp(v0, v1, 0);

-  return vercmp(e0->filename, e1->filename);

+      grub_free(v0);

+      grub_free(v1);

+

+      if (r != 0)

+	return r;

+    }

+

+  id0 = grub_strdup(e0->filename);

+  id1 = grub_strdup(e1->filename);

+

+  l = grub_strlen(id0);

+  if (l > 5 && grub_strcmp(id0 + l - 5, ".conf"))

+    id0[l-5] = '\0';

+

+  l = grub_strlen(id1);

+  if (l > 5 && grub_strcmp(id1 + l - 5, ".conf"))

+    id1[l-5] = '\0';

+

+  r = split_cmp(id0, id1, 1);

+

+  grub_free(id0);

+  grub_free(id1);

+

+  return r;

 }

 struct read_entry_info {