Add method for finding XML doc files for systems that don't support GLOB_BRACE.

In particular, Solaris and perhaps others do not support the above mentioned
GNU extension. In this case the paths are simply expanded without the braces
and the calls to glob are made separately.

Note: I could not explain memory allocation failures that were being reported
from within libxml itself when making calls to glob without using GLOB_NOCHECK.
This is the only reason why that flag is being used.

(closes issue #15402)
Reported by: snuffy
Patches: 
      bug_xmlpatt-v3.diff uploaded by snuffy (license 35),
      modified by me


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@278708 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/xmldoc.c

@@ -1816,6 +1816,49 @@ char *ast_xmldoc_build_description(const char *type, const char *name)
 	return xmldoc_build_field(type, name, "description", 0);
 }
 
+#if !defined(HAVE_GLOB_NOMAGIC) || !defined(HAVE_GLOB_BRACE) || defined(DEBUG_NONGNU)
+static int xml_pathmatch(char *xmlpattern, int xmlpattern_maxlen, glob_t *globbuf)
+{
+	int globret;
+
+	snprintf(xmlpattern, xmlpattern_maxlen, "%s/documentation/thirdparty/*-%s.xml",
+		ast_config_AST_DATA_DIR, documentation_language);
+	if((globret = glob(xmlpattern, GLOB_NOCHECK, NULL, globbuf))) {
+		return globret;
+	}
+
+	snprintf(xmlpattern, xmlpattern_maxlen, "%s/documentation/thirdparty/*-%.2s_??.xml",
+		ast_config_AST_DATA_DIR, documentation_language);
+	if((globret = glob(xmlpattern, GLOB_APPEND | GLOB_NOCHECK, NULL, globbuf))) {
+		return globret;
+	}
+
+	snprintf(xmlpattern, xmlpattern_maxlen, "%s/documentation/thirdparty/*-%s.xml",
+		ast_config_AST_DATA_DIR, default_documentation_language);
+	if((globret = glob(xmlpattern, GLOB_APPEND | GLOB_NOCHECK, NULL, globbuf))) {
+		return globret;
+	}
+
+	snprintf(xmlpattern, xmlpattern_maxlen, "%s/documentation/*-%s.xml",
+		ast_config_AST_DATA_DIR, documentation_language);
+	if((globret = glob(xmlpattern, GLOB_APPEND | GLOB_NOCHECK, NULL, globbuf))) {
+		return globret;
+	}
+
+	snprintf(xmlpattern, xmlpattern_maxlen, "%s/documentation/*-%.2s_??.xml",
+		ast_config_AST_DATA_DIR, documentation_language);
+	if((globret = glob(xmlpattern, GLOB_APPEND | GLOB_NOCHECK, NULL, globbuf))) {
+		return globret;
+	}
+
+	snprintf(xmlpattern, xmlpattern_maxlen, "%s/documentation/*-%s.xml",
+		ast_config_AST_DATA_DIR, default_documentation_language);
+	globret = glob(xmlpattern, GLOB_APPEND | GLOB_NOCHECK, NULL, globbuf);
+
+	return globret;
+}
+#endif
+
 /*! \brief Close and unload XML documentation. */
 static void xmldoc_unload_documentation(void)
 {
@@ -1842,6 +1885,9 @@ int ast_xmldoc_load_documentation(void)
 	struct ast_flags cnfflags = { 0 };
 	int globret, i, dup, duplicate;
 	glob_t globbuf;
+#if !defined(HAVE_GLOB_NOMAGIC) || !defined(HAVE_GLOB_BRACE) || defined(DEBUG_NONGNU)
+	int xmlpattern_maxlen;
+#endif
 
 	/* setup default XML documentation language */
 	snprintf(documentation_language, sizeof(documentation_language), default_documentation_language);
@@ -1863,17 +1909,26 @@ int ast_xmldoc_load_documentation(void)
 	/* register function to be run when asterisk finish. */
 	ast_register_atexit(xmldoc_unload_documentation);
 
+	globbuf.gl_offs = 0;    /* slots to reserve in gl_pathv */
+
+#if !defined(HAVE_GLOB_NOMAGIC) || !defined(HAVE_GLOB_BRACE) || defined(DEBUG_NONGNU)
+	xmlpattern_maxlen = strlen(ast_config_AST_DATA_DIR) + strlen("/documentation/thirdparty") + strlen("/*-??_??.xml") + 1;
+	xmlpattern = ast_malloc(xmlpattern_maxlen);
+	globret = xml_pathmatch(xmlpattern, xmlpattern_maxlen, &globbuf);
+#else
 	/* Get every *-LANG.xml file inside $(ASTDATADIR)/documentation */
 	ast_asprintf(&xmlpattern, "%s/documentation{/thirdparty/,/}*-{%s,%.2s_??,%s}.xml", ast_config_AST_DATA_DIR,
-			documentation_language, documentation_language, default_documentation_language);
-	globbuf.gl_offs = 0;    /* initialize it to silence gcc */
+		documentation_language, documentation_language, default_documentation_language);
 	globret = glob(xmlpattern, MY_GLOB_FLAGS, NULL, &globbuf);
+#endif
+
+	ast_debug(3, "gl_pathc %zd\n", globbuf.gl_pathc);
 	if (globret == GLOB_NOSPACE) {
-		ast_log(LOG_WARNING, "Glob Expansion of pattern '%s' failed: Not enough memory\n", xmlpattern);
+		ast_log(LOG_WARNING, "XML load failure, glob expansion of pattern '%s' failed: Not enough memory\n", xmlpattern);
 		ast_free(xmlpattern);
 		return 1;
 	} else if (globret  == GLOB_ABORTED) {
-		ast_log(LOG_WARNING, "Glob Expansion of pattern '%s' failed: Read error\n", xmlpattern);
+		ast_log(LOG_WARNING, "XML load failure, glob expansion of pattern '%s' failed: Read error\n", xmlpattern);
 		ast_free(xmlpattern);
 		return 1;
 	}
@@ -1890,7 +1945,9 @@ int ast_xmldoc_load_documentation(void)
 				break;
 			}
 		}
-		if (duplicate) {
+		if (duplicate || strchr(globbuf.gl_pathv[i], '*')) {
+		/* skip duplicates as well as pathnames not found 
+		 * (due to use of GLOB_NOCHECK in xml_pathmatch) */
 			continue;
 		}
 		tmpdoc = NULL;