+/* Copyright (c) 2012, Bastien Dejean
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include <stdlib.h>
-#include <string.h>
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#endif
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
+#include <ctype.h>
#include "helpers.h"
#include "common.h"
int main(int argc, char *argv[])
{
- int sock_fd;
- struct sockaddr_un sock_address;
- size_t msglen = 0;
- char msg[BUFSIZ];
- char rsp[BUFSIZ];
-
- if (argc < 2)
- die("no arguments given\n");
-
- char *sock_path = getenv(SOCKET_ENV_VAR);
- if (sock_path == NULL || strlen(sock_path) == 0)
- warn("environmental variable '%s' is not set or empty - using default value: %s\n", SOCKET_ENV_VAR, DEFAULT_SOCKET_PATH);
- else if (sizeof(sock_address.sun_path) <= strlen(sock_path))
- die("value too long for environmental variable '%s'\n", SOCKET_ENV_VAR);
-
- sock_address.sun_family = AF_UNIX;
- strncpy(sock_address.sun_path, (sock_path == NULL ? DEFAULT_SOCKET_PATH : sock_path), sizeof(sock_address.sun_path));
- sock_address.sun_path[sizeof(sock_address.sun_path) - 1] = 0;
-
- for (int offset = 0, len = sizeof(msg), n = 0; --argc && ++argv && len > 0; offset += n, len -= n)
- n = snprintf(msg + offset, len, "%s ", *argv);
-
- msglen = strlen(msg);
- if (msg[msglen - 1] == ' ')
- msg[--msglen] = '\0';
-
- sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
- if (sock_fd == -1)
- die("failed to create socket\n");
-
- if (connect(sock_fd, (struct sockaddr *) &sock_address, sizeof(sock_address)) == -1)
- die("failed to connect to socket\n");
-
- if (send(sock_fd, msg, msglen, 0) == -1)
- die("failed to send data\n");
-
- int n = recv(sock_fd, rsp, sizeof(rsp), 0);
- if (n == -1) {
- die("failed to get response\n");
- } else if (n > 0) {
- rsp[n] = '\0';
- printf("%s\n", rsp);
- }
-
- if (sock_fd)
- close(sock_fd);
-
- return EXIT_SUCCESS;
+ int fd;
+ struct sockaddr_un sock_address;
+ char msg[BUFSIZ], rsp[BUFSIZ];
+
+ if (argc < 2)
+ err("No arguments given.\n");
+
+ sock_address.sun_family = AF_UNIX;
+ char *sp;
+
+ if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+ err("Failed to create the socket.\n");
+
+ sp = getenv(SOCKET_ENV_VAR);
+ if (sp != NULL) {
+ snprintf(sock_address.sun_path, sizeof(sock_address.sun_path), "%s", sp);
+ } else {
+ char *host = NULL;
+ int dn = 0, sn = 0;
+ if (xcb_parse_display(NULL, &host, &dn, &sn) != 0)
+ snprintf(sock_address.sun_path, sizeof(sock_address.sun_path), SOCKET_PATH_TPL, host, dn, sn);
+ free(host);
+ }
+
+ if (connect(fd, (struct sockaddr *) &sock_address, sizeof(sock_address)) == -1)
+ err("Failed to connect to the socket.\n");
+
+ argc--, argv++;
+ int msg_len = 0;
+
+ for (int offset = 0, rem = sizeof(msg), n = 0; argc > 0 && rem > 0; offset += n, rem -= n, argc--, argv++) {
+ n = snprintf(msg + offset, rem, "%s%c", *argv, 0);
+ msg_len += n;
+ }
+
+ if (send(fd, msg, msg_len, 0) == -1)
+ err("Failed to send the data.\n");
+
+ int ret = 0, nb;
+ while ((nb = recv(fd, rsp, sizeof(rsp)-1, 0)) > 0) {
+ if (nb == 1 && rsp[0] < MSG_LENGTH) {
+ ret = rsp[0];
+ if (ret == MSG_UNKNOWN) {
+ warn("Unknown command.\n");
+ } else if (ret == MSG_SYNTAX) {
+ warn("Invalid syntax.\n");
+ }
+ } else {
+ rsp[nb] = '\0';
+ printf("%s", rsp);
+ fflush(stdout);
+ }
+ }
+
+ close(fd);
+ return ret;
}