mirror of https://github.com/swaywm/sway.git
139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include "ipc-client.h"
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#include "log.h"
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static const char ipc_magic[] = {'i', '3', '-', 'i', 'p', 'c'};
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static const size_t ipc_header_size = sizeof(ipc_magic)+8;
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char *get_socketpath(void) {
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const char *swaysock = getenv("SWAYSOCK");
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if (swaysock) {
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return strdup(swaysock);
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}
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char *line = NULL;
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size_t line_size = 0;
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FILE *fp = popen("sway --get-socketpath 2>/dev/null", "r");
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if (fp) {
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getline(&line, &line_size, fp);
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pclose(fp);
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if (line && *line) {
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return line;
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}
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}
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const char *i3sock = getenv("I3SOCK");
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if (i3sock) {
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free(line);
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return strdup(i3sock);
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}
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fp = popen("i3 --get-socketpath 2>/dev/null", "r");
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if (fp) {
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getline(&line, &line_size, fp);
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pclose(fp);
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if (line && *line) {
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return line;
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}
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}
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free(line);
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return NULL;
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}
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int ipc_open_socket(const char *socket_path) {
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struct sockaddr_un addr;
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int socketfd;
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if ((socketfd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
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sway_abort("Unable to open Unix socket");
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}
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addr.sun_family = AF_UNIX;
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strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
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addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
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int l = sizeof(struct sockaddr_un);
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if (connect(socketfd, (struct sockaddr *)&addr, l) == -1) {
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sway_abort("Unable to connect to %s", socket_path);
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}
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return socketfd;
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}
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struct ipc_response *ipc_recv_response(int socketfd) {
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char *data = malloc(sizeof(char) * ipc_header_size);
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uint32_t *data32 = (uint32_t *)(data + sizeof(ipc_magic));
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size_t total = 0;
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while (total < ipc_header_size) {
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ssize_t received = recv(socketfd, data + total, ipc_header_size - total, 0);
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if (received <= 0) {
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sway_abort("Unable to receive IPC response");
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}
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total += received;
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}
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struct ipc_response *response = malloc(sizeof(struct ipc_response));
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if (!response) {
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goto error_1;
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}
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total = 0;
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memcpy(&response->size, &data32[0], sizeof(data32[0]));
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memcpy(&response->type, &data32[1], sizeof(data32[1]));
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free(data);
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char *payload = malloc(response->size + 1);
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if (!payload) {
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goto error_2;
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}
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while (total < response->size) {
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ssize_t received = recv(socketfd, payload + total, response->size - total, 0);
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if (received < 0) {
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sway_abort("Unable to receive IPC response");
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}
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total += received;
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}
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payload[response->size] = '\0';
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response->payload = payload;
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return response;
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error_2:
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free(response);
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free(payload);
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error_1:
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wlr_log(WLR_ERROR, "Unable to allocate memory for IPC response");
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return NULL;
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}
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void free_ipc_response(struct ipc_response *response) {
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free(response->payload);
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free(response);
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}
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char *ipc_single_command(int socketfd, uint32_t type, const char *payload, uint32_t *len) {
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char *data = malloc(sizeof(char) * ipc_header_size);
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uint32_t *data32 = (uint32_t *)(data + sizeof(ipc_magic));
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memcpy(data, ipc_magic, sizeof(ipc_magic));
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memcpy(&data32[0], len, sizeof(*len));
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memcpy(&data32[1], &type, sizeof(type));
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if (write(socketfd, data, ipc_header_size) == -1) {
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sway_abort("Unable to send IPC header");
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}
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free(data);
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if (write(socketfd, payload, *len) == -1) {
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sway_abort("Unable to send IPC payload");
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}
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struct ipc_response *resp = ipc_recv_response(socketfd);
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char *response = resp->payload;
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*len = resp->size;
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free(resp);
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return response;
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}
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