ari: Add a copy operation for stored recordings

This patch adds a new operation for stored recordings, copy. It takes an
existing stored recording and makes a copy of it in the same directory
or a relative directory under the stored recording directory.

/ari/recordings/stored/{recordingName}/copy?destinationRecordingName={copy_name}

This is particularly useful for voicemail-esque applications, which may need to
copy or move recordings around a directory structure.

Review: https://reviewboard.asterisk.org/r/3768/

ASTERISK-24036 #close
Reported by: Sam Galarneau
Tested by: Sam Galarneau
........

Merged revisions 419021 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@419022 65c4cc65-6c06-0410-ace0-fbb531ad65f3

7 files changed, 317 insertions, 2 deletions

diff --git a/CHANGES b/CHANGES
index b992edf4c..112efa79a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -186,6 +186,12 @@ res_config_pgsql
 --- Functionality changes from Asterisk 12.4.0 to Asterisk 12.5.0 ------------
 ------------------------------------------------------------------------------
 
+ARI
+------------------
+ * Stored recordings now support a new operation, copy. This will take an
+   existing stored recording and copy it to a new location in the recordings
+   directory.
+
 res_pjsip
 ------------------
  * The endpoint configuration object now supports 'accountcode'. Any channel
diff --git a/include/asterisk/stasis_app_recording.h b/include/asterisk/stasis_app_recording.h
index f67c204ef..543207a47 100644
--- a/include/asterisk/stasis_app_recording.h
+++ b/include/asterisk/stasis_app_recording.h
@@ -80,6 +80,19 @@ struct stasis_app_stored_recording *stasis_app_stored_recording_find_by_name(
 	const char *name);
 
 /*!
+ * \brief Copy a recording.
+ *
+ * \param src_recording The recording to copy
+ * \param dst The destination of the recording to make
+ * \param dst_recording If successful, the stored recording created as a result of the copy
+ *
+ * \retval 0 on success
+ * \retval Non-zero on error
+ */
+int stasis_app_stored_recording_copy(struct stasis_app_stored_recording *src_recording, const char *dst,
+	struct stasis_app_stored_recording **dst_recording);
+
+/*!
  * \brief Delete a recording from disk.
  *
  * \param recording Recording to delete.
diff --git a/res/ari/resource_recordings.c b/res/ari/resource_recordings.c
index bc07d5599..bd273aa62 100644
--- a/res/ari/resource_recordings.c
+++ b/res/ari/resource_recordings.c
@@ -96,6 +96,79 @@ void ast_ari_recordings_get_stored(struct ast_variable *headers,
 	ast_ari_response_ok(response, json);
 }
 
+void ast_ari_recordings_copy_stored(struct ast_variable *headers,
+	struct ast_ari_recordings_copy_stored_args *args,
+	struct ast_ari_response *response)
+{
+	RAII_VAR(struct stasis_app_stored_recording *, src_recording, NULL,
+		ao2_cleanup);
+	RAII_VAR(struct stasis_app_stored_recording *, dst_recording, NULL,
+		ao2_cleanup);
+	struct ast_json *json;
+	int res;
+
+	src_recording = stasis_app_stored_recording_find_by_name(
+		args->recording_name);
+	if (src_recording == NULL) {
+		ast_ari_response_error(response, 404, "Not Found",
+			"Recording not found");
+		return;
+	}
+
+	dst_recording = stasis_app_stored_recording_find_by_name(
+		args->destination_recording_name);
+	if (dst_recording) {
+		ast_ari_response_error(response, 409, "Conflict",
+			"A recording with the same name already exists on the system");
+		return;
+	}
+
+	/* See if we got our name rejected */
+	switch (errno) {
+	case EINVAL:
+		ast_ari_response_error(response, 400, "Bad request",
+			"Invalid destination recording name");
+		return;
+	case EACCES:
+		ast_ari_response_error(response, 403, "Forbidden",
+			"Destination file path is forbidden");
+		return;
+	default:
+		break;
+	}
+
+	res = stasis_app_stored_recording_copy(src_recording,
+		args->destination_recording_name, &dst_recording);
+	if (res) {
+		switch (errno) {
+		case EACCES:
+		case EPERM:
+			ast_ari_response_error(response, 500,
+				"Internal Server Error",
+				"Copy failed");
+			break;
+		default:
+			ast_log(LOG_WARNING,
+				"Unexpected error copying recording %s to %s: %s\n",
+				args->recording_name, args->destination_recording_name, strerror(errno));
+			ast_ari_response_error(response, 500,
+				"Internal Server Error",
+				"Copy failed");
+			break;
+		}
+		return;
+	}
+
+	json = stasis_app_stored_recording_to_json(dst_recording);
+	if (json == NULL) {
+		ast_ari_response_error(response, 500,
+			"Internal Server Error", "Error building response");
+		return;
+	}
+
+	ast_ari_response_ok(response, json);
+}
+
 void ast_ari_recordings_delete_stored(struct ast_variable *headers,
 	struct ast_ari_recordings_delete_stored_args *args,
 	struct ast_ari_response *response)
diff --git a/res/ari/resource_recordings.h b/res/ari/resource_recordings.h
index 039cb168a..196122f44 100644
--- a/res/ari/resource_recordings.h
+++ b/res/ari/resource_recordings.h
@@ -76,6 +76,32 @@ struct ast_ari_recordings_delete_stored_args {
  * \param[out] response HTTP response
  */
 void ast_ari_recordings_delete_stored(struct ast_variable *headers, struct ast_ari_recordings_delete_stored_args *args, struct ast_ari_response *response);
+/*! Argument struct for ast_ari_recordings_copy_stored() */
+struct ast_ari_recordings_copy_stored_args {
+	/*! The name of the recording to copy */
+	const char *recording_name;
+	/*! The destination name of the recording */
+	const char *destination_recording_name;
+};
+/*!
+ * \brief Body parsing function for /recordings/stored/{recordingName}/copy.
+ * \param body The JSON body from which to parse parameters.
+ * \param[out] args The args structure to parse into.
+ * \retval zero on success
+ * \retval non-zero on failure
+ */
+int ast_ari_recordings_copy_stored_parse_body(
+	struct ast_json *body,
+	struct ast_ari_recordings_copy_stored_args *args);
+
+/*!
+ * \brief Copy a stored recording.
+ *
+ * \param headers HTTP headers
+ * \param args Swagger parameters
+ * \param[out] response HTTP response
+ */
+void ast_ari_recordings_copy_stored(struct ast_variable *headers, struct ast_ari_recordings_copy_stored_args *args, struct ast_ari_response *response);
 /*! Argument struct for ast_ari_recordings_get_live() */
 struct ast_ari_recordings_get_live_args {
 	/*! The name of the recording */
diff --git a/res/res_ari_recordings.c b/res/res_ari_recordings.c
index 56fb9ecca..3f4ef2951 100644
--- a/res/res_ari_recordings.c
+++ b/res/res_ari_recordings.c
@@ -220,6 +220,104 @@ static void ast_ari_recordings_delete_stored_cb(
 fin: __attribute__((unused))
 	return;
 }
+int ast_ari_recordings_copy_stored_parse_body(
+	struct ast_json *body,
+	struct ast_ari_recordings_copy_stored_args *args)
+{
+	struct ast_json *field;
+	/* Parse query parameters out of it */
+	field = ast_json_object_get(body, "destinationRecordingName");
+	if (field) {
+		args->destination_recording_name = ast_json_string_get(field);
+	}
+	return 0;
+}
+
+/*!
+ * \brief Parameter parsing callback for /recordings/stored/{recordingName}/copy.
+ * \param get_params GET parameters in the HTTP request.
+ * \param path_vars Path variables extracted from the request.
+ * \param headers HTTP headers.
+ * \param[out] response Response to the HTTP request.
+ */
+static void ast_ari_recordings_copy_stored_cb(
+	struct ast_tcptls_session_instance *ser,
+	struct ast_variable *get_params, struct ast_variable *path_vars,
+	struct ast_variable *headers, struct ast_ari_response *response)
+{
+	struct ast_ari_recordings_copy_stored_args args = {};
+	struct ast_variable *i;
+	RAII_VAR(struct ast_json *, body, NULL, ast_json_unref);
+#if defined(AST_DEVMODE)
+	int is_valid;
+	int code;
+#endif /* AST_DEVMODE */
+
+	for (i = get_params; i; i = i->next) {
+		if (strcmp(i->name, "destinationRecordingName") == 0) {
+			args.destination_recording_name = (i->value);
+		} else
+		{}
+	}
+	for (i = path_vars; i; i = i->next) {
+		if (strcmp(i->name, "recordingName") == 0) {
+			args.recording_name = (i->value);
+		} else
+		{}
+	}
+	/* Look for a JSON request entity */
+	body = ast_http_get_json(ser, headers);
+	if (!body) {
+		switch (errno) {
+		case EFBIG:
+			ast_ari_response_error(response, 413, "Request Entity Too Large", "Request body too large");
+			goto fin;
+		case ENOMEM:
+			ast_ari_response_error(response, 500, "Internal Server Error", "Error processing request");
+			goto fin;
+		case EIO:
+			ast_ari_response_error(response, 400, "Bad Request", "Error parsing request body");
+			goto fin;
+		}
+	}
+	if (ast_ari_recordings_copy_stored_parse_body(body, &args)) {
+		ast_ari_response_alloc_failed(response);
+		goto fin;
+	}
+	ast_ari_recordings_copy_stored(headers, &args, response);
+#if defined(AST_DEVMODE)
+	code = response->response_code;
+
+	switch (code) {
+	case 0: /* Implementation is still a stub, or the code wasn't set */
+		is_valid = response->message == NULL;
+		break;
+	case 500: /* Internal Server Error */
+	case 501: /* Not Implemented */
+	case 404: /* Recording not found */
+	case 409: /* A recording with the same name already exists on the system */
+		is_valid = 1;
+		break;
+	default:
+		if (200 <= code && code <= 299) {
+			is_valid = ast_ari_validate_stored_recording(
+				response->message);
+		} else {
+			ast_log(LOG_ERROR, "Invalid error response %d for /recordings/stored/{recordingName}/copy\n", code);
+			is_valid = 0;
+		}
+	}
+
+	if (!is_valid) {
+		ast_log(LOG_ERROR, "Response validation failed for /recordings/stored/{recordingName}/copy\n");
+		ast_ari_response_error(response, 500,
+			"Internal Server Error", "Response validation failed");
+	}
+#endif /* AST_DEVMODE */
+
+fin: __attribute__((unused))
+	return;
+}
 /*!
  * \brief Parameter parsing callback for /recordings/live/{recordingName}.
  * \param get_params GET parameters in the HTTP request.
@@ -639,6 +737,15 @@ fin: __attribute__((unused))
 }
 
 /*! \brief REST handler for /api-docs/recordings.{format} */
+static struct stasis_rest_handlers recordings_stored_recordingName_copy = {
+	.path_segment = "copy",
+	.callbacks = {
+		[AST_HTTP_POST] = ast_ari_recordings_copy_stored_cb,
+	},
+	.num_children = 0,
+	.children = {  }
+};
+/*! \brief REST handler for /api-docs/recordings.{format} */
 static struct stasis_rest_handlers recordings_stored_recordingName = {
 	.path_segment = "recordingName",
 	.is_wildcard = 1,
@@ -646,8 +753,8 @@ static struct stasis_rest_handlers recordings_stored_recordingName = {
 		[AST_HTTP_GET] = ast_ari_recordings_get_stored_cb,
 		[AST_HTTP_DELETE] = ast_ari_recordings_delete_stored_cb,
 	},
-	.num_children = 0,
-	.children = {  }
+	.num_children = 1,
+	.children = { &recordings_stored_recordingName_copy, }
 };
 /*! \brief REST handler for /api-docs/recordings.{format} */
 static struct stasis_rest_handlers recordings_stored = {
diff --git a/res/stasis_recording/stored.c b/res/stasis_recording/stored.c
index 03af06987..6cc60fd28 100644
--- a/res/stasis_recording/stored.c
+++ b/res/stasis_recording/stored.c
@@ -458,6 +458,56 @@ struct stasis_app_stored_recording *stasis_app_stored_recording_find_by_name(
 	return recording;
 }
 
+int stasis_app_stored_recording_copy(struct stasis_app_stored_recording *src_recording, const char *dst,
+	struct stasis_app_stored_recording **dst_recording)
+{
+	RAII_VAR(char *, full_path, NULL, ast_free);
+	char *dst_file = ast_strdupa(dst);
+	char *format;
+	char *last_slash;
+	int res;
+
+	/* Drop the extension if specified, core will do this for us */
+	format = strrchr(dst_file, '.');
+	if (format) {
+		format = '\0';
+	}
+
+	/* See if any intermediary directories need to be made */
+	last_slash = strrchr(dst_file, '/');
+	if (last_slash) {
+		RAII_VAR(char *, tmp_path, NULL, ast_free);
+
+		*last_slash = '\0';
+		if (ast_asprintf(&tmp_path, "%s/%s", ast_config_AST_RECORDING_DIR, dst_file) < 0) {
+			return -1;
+		}
+		if (ast_safe_mkdir(ast_config_AST_RECORDING_DIR,
+				tmp_path, 0777) != 0) {
+			/* errno set by ast_mkdir */
+			return -1;
+		}
+		*last_slash = '/';
+		if (ast_asprintf(&full_path, "%s/%s", ast_config_AST_RECORDING_DIR, dst_file) < 0) {
+			return -1;
+		}
+	} else {
+		/* There is no directory portion */
+		if (ast_asprintf(&full_path, "%s/%s", ast_config_AST_RECORDING_DIR, dst_file) < 0) {
+			return -1;
+		}
+	}
+
+	ast_verb(4, "Copying recording %s to %s (format %s)\n", src_recording->file,
+		full_path, src_recording->format);
+	res = ast_filecopy(src_recording->file, full_path, src_recording->format);
+	if (!res) {
+		*dst_recording = stasis_app_stored_recording_find_by_name(dst_file);
+	}
+
+	return res;
+}
+
 int stasis_app_stored_recording_delete(
 	struct stasis_app_stored_recording *recording)
 {
diff --git a/rest-api/api-docs/recordings.json b/rest-api/api-docs/recordings.json
index 1f825a2b0..54daa33cf 100644
--- a/rest-api/api-docs/recordings.json
+++ b/rest-api/api-docs/recordings.json
@@ -70,6 +70,46 @@
 			]
 		},
 		{
+			"path": "/recordings/stored/{recordingName}/copy",
+			"description": "Copy an individual recording",
+			"operations": [
+				{
+					"httpMethod": "POST",
+					"summary": "Copy a stored recording.",
+					"nickname": "copyStored",
+					"responseClass": "StoredRecording",
+					"parameters": [
+						{
+							"name": "recordingName",
+							"description": "The name of the recording to copy",
+							"paramType": "path",
+							"required": true,
+							"allowMultiple": false,
+							"dataType": "string"
+						},
+						{
+							"name": "destinationRecordingName",
+							"description": "The destination name of the recording",
+							"paramType": "query",
+							"required": true,
+							"allowMultiple": false,
+							"dataType": "string"
+						}
+					],
+					"errorResponses": [
+						{
+							"code": 404,
+							"reason": "Recording not found"
+						},
+						{
+							"code": 409,
+							"reason": "A recording with the same name already exists on the system"
+						}
+					]
+				}
+			]
+		},
+		{
 			"path": "/recordings/live/{recordingName}",
 			"description": "A recording that is in progress",
 			"operations": [