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Implement swaymsg IPC behavior

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Drew DeVault 2015-11-26 15:06:41 -05:00
parent 9a15371ba3
commit a1018f3280
1 changed files with 70 additions and 2 deletions
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72
swaymsg/main.c
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@ -3,11 +3,17 @@
#include <string.h> #include <string.h>
#include <getopt.h> #include <getopt.h>
#include <stdint.h> #include <stdint.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <unistd.h>
#include "stringop.h" #include "stringop.h"
#include "ipc.h" #include "ipc.h"
#include "readline.h" #include "readline.h"
#include "log.h" #include "log.h"
static const char ipc_magic[] = {'i', '3', '-', 'i', 'p', 'c'};
static const size_t ipc_header_size = sizeof(ipc_magic)+8;
void sway_terminate(void) { void sway_terminate(void) {
exit(1); exit(1);
} }
@ -22,11 +28,66 @@ char *get_socketpath(void) {
return line; return line;
} }
char *do_ipc(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;
}
int main(int argc, char **argv) { int main(int argc, char **argv) {
static int quiet = 0; static int quiet = 0;
char *socket_path = NULL; char *socket_path = NULL;
char *cmdtype = NULL; char *cmdtype = NULL;
init_log(L_INFO);
static struct option long_options[] = { static struct option long_options[] = {
{"quiet", no_argument, &quiet, 'q'}, {"quiet", no_argument, &quiet, 'q'},
{"version", no_argument, NULL, 'v'}, {"version", no_argument, NULL, 'v'},
@ -63,7 +124,7 @@ int main(int argc, char **argv) {
} }
if (!cmdtype) { if (!cmdtype) {
cmdtype = "command"; cmdtype = strdup("command");
} }
if (!socket_path) { if (!socket_path) {
socket_path = get_socketpath(); socket_path = get_socketpath();
@ -89,13 +150,20 @@ int main(int argc, char **argv) {
} else if (strcasecmp(cmdtype, "get_version") == 0) { } else if (strcasecmp(cmdtype, "get_version") == 0) {
type = IPC_GET_VERSION; type = IPC_GET_VERSION;
} }
free(cmdtype);
char *command = strdup(""); char *command = strdup("");
if (optind < argc) { if (optind < argc) {
command = join_args(argv + optind, argc - optind); command = join_args(argv + optind, argc - optind);
} }
printf("%s", command); char *resp = do_ipc(socket_path, type, command, strlen(command));
if (!quiet) {
printf("%s", resp);
}
free(command);
free(resp);
free(socket_path); free(socket_path);
return 0; return 0;
} }