start working on a client/server model similar to urxvtd/urxvtc

the code is still kind of a mess, and it doesn't quite work properly
yet, but it's close enough to be a start, i think

1 files changed, 66 insertions, 0 deletions

diff --git a/src/runesc.c b/src/runesc.c
new file mode 100644
index 0000000..04fc26b
--- /dev/null
+++ b/src/runesc.c
@@ -0,0 +1,66 @@
+#include <arpa/inet.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/un.h>
+
+#include "runes.h"
+#include "socket.h"
+
+static int runes_socket_open_client(char *name);
+
+int main (int argc, char *argv[])
+{
+    char *name, *buf;
+    int s, i;
+    size_t len, offset;
+    uint32_t argc32 = argc, argv_len;
+
+    name = runes_get_socket_name();
+    s = runes_socket_open_client(name);
+
+    len = sizeof(argc32) + sizeof(argv_len);
+    for (i = 0; i < argc; ++i) {
+        len += strlen(argv[i]) + 1;
+    }
+
+    buf = malloc(len);
+    ((uint32_t*)buf)[0] = htonl(argc32);
+    offset = sizeof(argc32) + sizeof(argv_len);
+    ((uint32_t*)buf)[1] = htonl(len - offset);
+
+    for (i = 0; i < argc; ++i) {
+        size_t arg_len = strlen(argv[i]) + 1;
+        memcpy(buf + offset, argv[i], arg_len);
+        offset += arg_len;
+    }
+
+    send(s, buf, offset, 0);
+    free(buf);
+    shutdown(s, SHUT_RDWR);
+}
+
+static int runes_socket_open_client(char *name)
+{
+    int s;
+    struct sockaddr_un client;
+
+    if (strlen(name) + 1 > MAX_SOCKET_PATH_LEN) {
+        runes_die("socket path %s is too long\n", name);
+    }
+
+    s = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (s < 0) {
+        runes_die("couldn't create socket: %s\n", strerror(errno));
+    }
+
+    client.sun_family = AF_UNIX;
+    strcpy(client.sun_path, name);
+    if (connect(s, (struct sockaddr*)(&client), sizeof(struct sockaddr_un))) {
+        runes_die("couldn't connect to socket at %s: %s\n", name,
+                  strerror(errno));
+    }
+
+    return s;
+}