Index: pbx.c
===================================================================
RCS file: /usr/cvsroot/asterisk/pbx.c,v
retrieving revision 1.146
diff -u -r1.146 pbx.c
--- pbx.c	21 Aug 2004 18:55:39 -0000	1.146
+++ pbx.c	24 Aug 2004 15:58:19 -0000
@@ -2394,13 +2394,15 @@
 "       Describes a particular application.\n";
 
 static char show_applications_help[] =
-"Usage: show applications\n"
-"       List applications which are currently available.\n";
+"Usage: show applications [{like|describing} <text>]\n"
+"       List applications which are currently available.\n"
+"       If 'like', <text> will be a substring of the app name\n"
+"       If 'describing', <text> will be a substring of the description\n";
 
 static char show_dialplan_help[] =
 "Usage: show dialplan [exten@][context]\n"
@@ -2553,6 +2555,7 @@
 static int handle_show_applications(int fd, int argc, char *argv[])
 {
 	struct ast_app *a;
+	int like=0, describing=0;
 
 	/* try to lock applications list ... */
 	if (ast_mutex_lock(&applock)) {
@@ -2560,26 +2563,49 @@
 		return -1;
 	}
 
-	/* ... go to first application ... */
-	a = apps; 
-
 	/* ... have we got at least one application (first)? no? */
-	if (!a) {
-		ast_cli(fd, "There is no registered applications\n");
+	if (!apps) {
+		ast_cli(fd, "There are no registered applications\n");
 		ast_mutex_unlock(&applock);
 		return -1;
 	}
 
-	/* ... we have applications ... */
-	ast_cli(fd, "\n    -= Registered Asterisk Applications =-\n");
+	if ((argc == 4) && (!strcmp(argv[2], "like"))) {
+		like = 1;
+	} else if ((argc > 3) && (!strcmp(argv[2], "describing"))) {
+		describing = 1;
+	}
+
+	if ((!like) && (!describing)) {
+		ast_cli(fd, "    -= Registered Asterisk Applications =-\n");
+	} else {
+		ast_cli(fd, "    -= Matching Asterisk Applications =-\n");
+	}
 
 	/* ... go through all applications ... */
-	while (a) {
+	for (a = apps; a; a = a->next) {
 		/* ... show informations about applications ... */
-		ast_cli(fd,"  %20s: %s\n",
-			a->name,
-			a->synopsis ? a->synopsis : "<Synopsis not available>");
-		a = a->next; 
+
+		if (like) {
+			if (ast_strcasestr(a->name, argv[3])) {
+				ast_cli(fd,"  %20s: %s\n", a->name, a->synopsis ? a->synopsis : "<Synopsis not available>");
+			}
+		} else if (describing) {
+			if (a->description) {
+				/* Match all words on command line */
+				int found = 1, i;
+				for (i=3;i<argc;i++) {
+					if (! ast_strcasestr(a->description, argv[i])) {
+						found = 0;
+					}
+				}
+				if (found) {
+					ast_cli(fd,"  %20s: %s\n", a->name, a->synopsis ? a->synopsis : "<Synopsis not available>");
+				}
+			}
+		} else {
+			ast_cli(fd,"  %20s: %s\n", a->name, a->synopsis ? a->synopsis : "<Synopsis not available>");
+		}
 	}
 
 	/* ... unlock and return */
Index: utils.c
===================================================================
RCS file: /usr/cvsroot/asterisk/utils.c,v
retrieving revision 1.16
diff -u -r1.16 utils.c
--- utils.c	8 Aug 2004 17:15:01 -0000	1.16
+++ utils.c	24 Aug 2004 15:58:19 -0000
@@ -20,6 +20,7 @@
 #include <asterisk/lock.h>
 #include <asterisk/utils.h>
 #include <asterisk/logger.h>
+#include <alloca.h>
 
 static char base64[64];
 static char b2a[256];
@@ -363,3 +364,44 @@
 	return pthread_create(thread, attr, start_routine, data); /* We're in ast_pthread_create, so it's okay */
 }
 #endif /* ! LINUX */
+
+static char *upper(const char *orig, char *buf, int bufsize)
+{
+	int i;
+	memset(buf, 0, bufsize);
+	for (i=0; i<bufsize - 1; i++) {
+		buf[i] = toupper(orig[i]);
+		if (orig[i] == '\0') {
+			break;
+		}
+	}
+	return buf;
+}
+
+/* Case-insensitive substring matching */
+char *ast_strcasestr(const char *haystack, const char *needle)
+{
+	char *u1, *u2;
+	int u1len = strlen(haystack), u2len = strlen(needle);
+
+	u1 = alloca(u1len);
+	u2 = alloca(u2len);
+	if (u1 && u2) {
+		char *offset;
+		if (u2len > u1len) {
+			/* Needle bigger than haystack */
+			return NULL;
+		}
+		offset = strstr(upper(haystack, u1, u1len), upper(needle, u2, u2len));
+		if (offset) {
+			/* Return the offset into the original string */
+			return ((char *)((unsigned int)haystack + (unsigned int)(offset - u1)));
+		} else {
+			return NULL;
+		}
+	} else {
+		ast_log(LOG_ERROR, "Out of memory\n");
+		return NULL;
+	}
+}
+
Index: include/asterisk/utils.h
===================================================================
RCS file: /usr/cvsroot/asterisk/include/asterisk/utils.h,v
retrieving revision 1.7
diff -u -r1.7 utils.h
--- include/asterisk/utils.h	8 Aug 2004 17:15:02 -0000	1.7
+++ include/asterisk/utils.h	24 Aug 2004 15:58:19 -0000
@@ -49,4 +49,6 @@
 extern int ast_pthread_create(pthread_t *thread, pthread_attr_t *attr, void *(*start_routine)(void *), void *data);
 #endif /* LINUX */
 
+extern char *ast_strcasestr(const char *, const char *);
+
 #endif