53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
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*
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <err.h>
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#include <i3/ipc.h>
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#include "libi3.h"
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/*
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* Formats a message (payload) of the given size and type and sends it to i3 via
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* the given socket file descriptor.
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*
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* Returns -1 when write() fails, errno will remain.
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* Returns 0 on success.
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*
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*/
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int ipc_send_message(int sockfd, uint32_t message_size,
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uint32_t message_type, const uint8_t *payload) {
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int buffer_size = strlen(I3_IPC_MAGIC) + sizeof(uint32_t) + sizeof(uint32_t) + message_size;
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char msg[buffer_size];
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char *walk = msg;
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strncpy(walk, I3_IPC_MAGIC, buffer_size - 1);
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walk += strlen(I3_IPC_MAGIC);
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memcpy(walk, &message_size, sizeof(uint32_t));
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walk += sizeof(uint32_t);
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memcpy(walk, &message_type, sizeof(uint32_t));
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walk += sizeof(uint32_t);
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memcpy(walk, payload, message_size);
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int sent_bytes = 0;
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int bytes_to_go = buffer_size;
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while (sent_bytes < bytes_to_go) {
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int n = write(sockfd, msg + sent_bytes, bytes_to_go);
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if (n == -1)
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return -1;
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sent_bytes += n;
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bytes_to_go -= n;
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}
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return 0;
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}
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