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https://github.com/swaywm/sway.git
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7298a9c67a
Makes `ipc_recv_response` return a struct with size, type and payload rather than just the payload string. This is useful if the type has to be checked on the client.
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <stdint.h>
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#include <sys/un.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include "log.h"
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#include "stringop.h"
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#include "ipc.h"
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#include "readline.h"
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#include "ipc-client.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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FILE *fp = popen("sway --get-socketpath", "r");
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if (!fp) {
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return NULL;
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}
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char *line = read_line(fp);
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pclose(fp);
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return line;
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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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strcpy(addr.sun_path, socket_path);
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int l = sizeof(addr.sun_family) + strlen(addr.sun_path);
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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[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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total = 0;
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response->size = data32[0];
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response->type = data32[1];
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char *payload = malloc(response->size + 1);
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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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}
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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[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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data32[0] = *len;
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data32[1] = 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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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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