From 27f03c705d8851a8ef6ca9e8f7828c1a2bfd9a88 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Fri, 27 Nov 2015 09:50:04 -0500
Subject: Move IPC client into common, refactor IPC

---
 common/ipc-client.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 common/ipc-client.c

(limited to 'common/ipc-client.c')

diff --git a/common/ipc-client.c b/common/ipc-client.c
new file mode 100644
index 00000000..916676a9
--- /dev/null
+++ b/common/ipc-client.c
@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <stdint.h>
+#include <sys/un.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include "log.h"
+#include "stringop.h"
+#include "ipc-server.h"
+#include "readline.h"
+
+static const char ipc_magic[] = {'i', '3', '-', 'i', 'p', 'c'};
+static const size_t ipc_header_size = sizeof(ipc_magic)+8;
+
+char *get_socketpath(void) {
+	FILE *fp = popen("sway --get-socketpath", "r");
+	if (!fp) {
+		return NULL;
+	}
+	char *line = read_line(fp);
+	pclose(fp);
+	return line;
+}
+
+char *ipc_single_command(const char *socket_path, uint32_t type, const char *payload, uint32_t len) {
+	struct sockaddr_un addr;
+	int socketfd;
+	if ((socketfd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
+		sway_abort("Unable to open Unix socket");
+	}
+	addr.sun_family = AF_UNIX;
+	strcpy(addr.sun_path, socket_path);
+	int l = sizeof(addr.sun_family) + strlen(addr.sun_path);
+	if (connect(socketfd, (struct sockaddr *)&addr, l) == -1) {
+		sway_abort("Unable to connect to %s", socket_path);
+	}
+
+	char data[ipc_header_size];
+	uint32_t *data32 = (uint32_t *)(data + sizeof(ipc_magic));
+	memcpy(data, ipc_magic, sizeof(ipc_magic));
+	data32[0] = len;
+	data32[1] = type;
+
+	if (write(socketfd, data, ipc_header_size) == -1) {
+		sway_abort("Unable to send IPC header");
+	}
+
+	if (write(socketfd, payload, len) == -1) {
+		sway_abort("Unable to send IPC payload");
+	}
+
+	size_t total = 0;
+	while (total < ipc_header_size) {
+		ssize_t received = recv(socketfd, data + total, ipc_header_size - total, 0);
+		if (received < 0) {
+			sway_abort("Unable to receive IPC response");
+		}
+		total += received;
+	}
+
+	total = 0;
+	len = data32[0];
+	char *response = malloc(len + 1);
+	while (total < len) {
+		ssize_t received = recv(socketfd, response + total, len - total, 0);
+		if (received < 0) {
+			sway_abort("Unable to receive IPC response");
+		}
+		total += received;
+	}
+	response[len] = '\0';
+
+	close(socketfd);
+
+	return response;
+}
-- 
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