Backport: Add support for dpkg-style sorting of tilde in version/release

Original commit message:

- This allows much nicer handling some common scenarios such as
  upstream pre-releases where the pre-release version would normally
  appear newer than final release, eg 1.0-rc1 vs 1.0. Previously this
  required mapping the pre-release tag into the release tag to achieve
  desired sorting, with tilde this becomes simply 1.0~rc1 < 1.0.
- Add a rpmlib() tracking dependency to prevent older rpm versions
  from getting confused with packages relying on the new behavior.

Picked: db28221a4a ("Add support for dpkg-style sorting of tilde in version/release")
Authored-by: Michael Schroeder <mls@suse.de>
Signed-off-by: Panu Matilainen <pmatilai@redhat.com>
Picked: 8002b3f985 ("Spelling fixes.")
Authored-by: Ville Skyttä <ville.skytta@iki.fi>
Signed-off-by: Panu Matilainen <pmatilai@redhat.com>
Link: https://bugzilla.altlinux.org/46585
[ vt: Change to parseRCPOT is not applied because no rpmCharCheck call.
  Unsupported RPM tags (ORDERVERSION, SUGGESTSVERSION, ENHANCESVERSION)
  are removed. haveTildeDep is reworked because we don't have headerGet
  API. ]
Signed-off-by: Vitaly Chikunov <vt@altlinux.org>

build/pack.c

@@ -479,6 +479,40 @@ static void downgradeLzmaLevel(char *mode, uint64_t archiveSize)
 #undef T
 }
 
+static int haveTildeDep(Header h)
+{
+    HeaderIterator hi;
+    int_32 tag, type, count;
+    const void *ptr;
+    int ret = 0;
+
+    for (hi = headerInitIterator(h);
+	 headerNextIterator(hi, &tag, &type, &ptr, &count);
+	 ptr = headerFreeData(ptr, type))
+    {
+	switch (tag) {
+	case RPMTAG_PROVIDEVERSION:
+	case RPMTAG_REQUIREVERSION:
+	case RPMTAG_OBSOLETEVERSION:
+	case RPMTAG_CONFLICTVERSION:
+	case RPMTAG_TRIGGERVERSION:
+	    break;
+	default:
+	    continue;
+	}
+	if (type != RPM_STRING_ARRAY_TYPE)
+	    continue;
+	while (count--) {
+	    const char *p = ((const char **)ptr)[count];
+
+	    if (strchr(p, '~'))
+		ret = 1;
+	}
+    }
+    hi = headerFreeIterator(hi);
+    return ret;
+}
+
 int writeRPM(Header *hdrp, const char *fileName, int type,
 		    CSA_t csa, char *passPhrase, const char **cookie)
 {
@@ -569,6 +603,10 @@ int writeRPM(Header *hdrp, const char *fileName, int type,
 	(void) headerAddEntry(h, RPMTAG_PAYLOADFLAGS, RPM_STRING_TYPE, buf+1, 1);
     }
 
+    /* check if the package has a dependency with a '~' */
+    if (haveTildeDep(h))
+	(void) rpmlibNeedsFeature(h, "TildeInVersions", "4.10.0-1");
+
     /* Create and add the cookie */
     if (cookie) {
 	if (!headerGetEntry(h, RPMTAG_BUILDHOST, NULL, (void **)&s, NULL))

build/parsePreamble.c

@@ -581,14 +581,14 @@ static int handlePreambleTag(Spec spec, Package pkg, int tag, const char *macro,
 	break;
       case RPMTAG_VERSION:
 	SINGLE_TOKEN_ONLY;
-	if (rpmCharCheck(spec, field, "._+", ".."))
+	if (rpmCharCheck(spec, field, "._+~", ".."))
 	    return RPMERR_BADSPEC;
 	/* This macro is for backward compatibility */
 	addMacro(spec->macros, "PACKAGE_VERSION", NULL, field, RMIL_OLDSPEC);
 	(void) headerAddEntry(pkg->header, tag, RPM_STRING_TYPE, field, 1);
 	break;
       case RPMTAG_RELEASE:
-	if (rpmCharCheck(spec, field, "._+", ".."))
+	if (rpmCharCheck(spec, field, "._+~", ".."))
 	    return RPMERR_BADSPEC;
 	/* This macro is for backward compatibility */
 	addMacro(spec->macros, "PACKAGE_RELEASE", NULL, field, RMIL_OLDSPEC-1);

lib/rpmlibprov.c

@@ -51,6 +51,9 @@ static struct rpmlibProvides_s {
     { "rpmlib(SetVersions)",  "4.0.4-alt98",
 	(                RPMSENSE_EQUAL),
     N_("dependencies support set/subset versions.") },
+    { "rpmlib(TildeInVersions)",    "4.10.0-1",
+	(                RPMSENSE_EQUAL),
+    N_("dependency comparison supports versions with tilde.") },
     { NULL,				NULL, 0,	NULL }
 };
 

rpmdb/rpmvercmp.c

@@ -33,9 +33,18 @@ int rpmvercmp(const char * a, const char * b)
     two = str2;
 
     /* loop through each version segment of str1 and str2 and compare them */
-    while (*one && *two) {
-	while (*one && !xisalnum(*one)) one++;
-	while (*two && !xisalnum(*two)) two++;
+    while (*one || *two) {
+	while (*one && !xisalnum(*one) && *one != '~') one++;
+	while (*two && !xisalnum(*two) && *two != '~') two++;
+
+	/* handle the tilde separator, it sorts before everything else */
+	if (*one == '~' || *two == '~') {
+	    if (*one != '~') return 1;
+	    if (*two != '~') return -1;
+	    one++;
+	    two++;
+	    continue;
+	}
 
 	if ( !*one && !*two )
 		return 0;