manager: hook event is not being raised

When the iostream code went in it introduced a conditional that made it so the
hook event was not being raised even if a hook is present. This patch adds a
check to see if a hook is present in astman_append. If so then call into the
send_string function, which in turn raises the even for specified hook.

Also updated the ami hooks unit test, so the test could be automated.

ASTERISK-27200 #close

Change-Id: Iff37f02f9708195d8f23e68f959d6eab720e1e36

main/manager.c

@@ -2905,14 +2905,13 @@ int ast_hook_send_action(struct manager_custom_hook *hook, const char *msg)
 	return ret;
 }
 
-
 /*!
  * helper function to send a string to the socket.
  * Return -1 on error (e.g. buffer full).
  */
 static int send_string(struct mansession *s, char *string)
 {
-	struct ast_iostream *stream = s->stream ? s->stream : s->session->stream;
+	struct ast_iostream *stream;
 	int len, res;
 
 	/* It's a result from one of the hook's action invocation */
@@ -2925,6 +2924,8 @@ static int send_string(struct mansession *s, char *string)
 		return 0;
 	}
 
+	stream = s->stream ? s->stream : s->session->stream;
+
 	len = strlen(string);
 	ast_iostream_set_timeout_inactivity(stream, s->session->writetimeout);
 	res = ast_iostream_write(stream, string, len);
@@ -2971,7 +2972,7 @@ void astman_append(struct mansession *s, const char *fmt, ...)
 		return;
 	}
 
-	if (s->tcptls_session != NULL && s->tcptls_session->stream != NULL) {
+	if (s->hook || (s->tcptls_session != NULL && s->tcptls_session->stream != NULL)) {
 		send_string(s, ast_str_buffer(buf));
 	} else {
 		ast_verbose("No connection stream in astman_append, should not happen\n");

tests/test_amihooks.c

@@ -22,8 +22,10 @@
  *
  * \author David Brooks <dbrooks@digium.com> based off of code written by Russell Bryant <russell@digium.com>
  *
- * This is simply an example or test module illustrating the ability for a custom module
- * to hook into AMI. Registration for AMI events and sending of AMI actions is shown.
+ * This started, and continues to serves, as an example illustrating the ability
+ * for a custom module to hook into AMI. Registration for AMI events and sending
+ * of AMI actions is shown. A test has also been created that utilizes the original
+ * example in order to make sure the ami event hook gets raised.
  */
 
 /*** MODULEINFO
@@ -37,11 +39,66 @@
 #include "asterisk/cli.h"
 #include "asterisk/utils.h"
 #include "asterisk/manager.h"
+#include "asterisk/test.h"
+
+#define CATEGORY "/main/amihooks/"
+
+AST_MUTEX_DEFINE_STATIC(hook_lock);
+ast_cond_t hook_cond;
+int done;
+
+static int wait_for_hook(struct ast_test *test)
+{
+	struct timeval start = ast_tvnow();
+	struct timespec timeout = {
+		.tv_sec = start.tv_sec + 2,
+		.tv_nsec = start.tv_usec * 1000
+	};
+	int res = 0;
+
+	ast_mutex_lock(&hook_lock);
+	while (!done) {
+		if (ast_cond_timedwait(&hook_cond, &hook_lock, &timeout) == ETIMEDOUT) {
+			ast_test_status_update(test, "Test timed out while waiting for hook event\n");
+			res = -1;
+			break;
+		}
+	}
+	ast_mutex_unlock(&hook_lock);
+
+	return res;
+}
+
+AST_TEST_DEFINE(amihook_cli_send)
+{
+	switch (cmd) {
+	case TEST_INIT:
+		info->name = __func__;
+		info->category = CATEGORY;
+		info->summary = "Execute an action using an AMI hook";
+		info->description = info->summary;
+		return AST_TEST_NOT_RUN;
+	case TEST_EXECUTE:
+		break;
+	}
+
+	done = 0;
+	if (ast_cli_command(-1, "amihook send")) {
+		return AST_TEST_FAIL;
+	}
+
+	return wait_for_hook(test) ? AST_TEST_FAIL : AST_TEST_PASS;
+}
 
 /* The helper function is required by struct manager_custom_hook. See __manager_event for details */
 static int amihook_helper(int category, const char *event, char *content)
 {
 	ast_log(LOG_NOTICE, "AMI Event: \nCategory: %d Event: %s\n%s\n", category, event, content);
+
+	ast_mutex_lock(&hook_lock);
+	done = 1;
+	ast_cond_signal(&hook_cond);
+	ast_mutex_unlock(&hook_lock);
 	return 0;
 }
 
@@ -141,6 +198,7 @@ static struct ast_cli_entry cli_amihook_evt[] = {
 
 static int unload_module(void)
 {
+	AST_TEST_UNREGISTER(amihook_cli_send);
 	ast_manager_unregister_hook(&test_hook);
 	return ast_cli_unregister_multiple(cli_amihook_evt, ARRAY_LEN(cli_amihook_evt));
 }
@@ -151,6 +209,8 @@ static int load_module(void)
 
 	res = ast_cli_register_multiple(cli_amihook_evt, ARRAY_LEN(cli_amihook_evt));
 
+	AST_TEST_REGISTER(amihook_cli_send);
+
 	return res ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
 }