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Merge pull request #774 from mwarning/master

sockread: add new package
lilik-openwrt-22.03
Steven Barth 10 years ago
parent
commit
d69ac5eeeb
3 changed files with 109 additions and 0 deletions
  1. +35
    -0
      utils/sockread/Makefile
  2. +11
    -0
      utils/sockread/src/Makefile
  3. +63
    -0
      utils/sockread/src/main.c

+ 35
- 0
utils/sockread/Makefile View File

@ -0,0 +1,35 @@
#
# This software is licensed under the CC0-1.0 license.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=sockread
PKG_VERSION:=1.0
PKG_RELEASE:=1
PKG_LICENSE:=CC0-1.0
include $(INCLUDE_DIR)/package.mk
define Package/sockread
SECTION:=utils
CATEGORY:=Utilities
TITLE:=sockread
MAINTAINER:=Moritz Warning <moritzwarning@web.de>
endef
define Package/sockread/description
sockread writes and reads data from a Unix domain socket
represented as a special file on the file system.
endef
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Package/sockread/install
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/sockread $(1)/usr/bin/
endef
$(eval $(call BuildPackage,sockread))

+ 11
- 0
utils/sockread/src/Makefile View File

@ -0,0 +1,11 @@
CC ?= gcc
CFLAGS ?= -O2 -Wall -pedantic
CFLAGS += -std=gnu99
.PHONY: clean
sockread:
$(CC) $(CFLAGS) main.c -o sockread
clean:
rm -f sockread

+ 63
- 0
utils/sockread/src/main.c View File

@ -0,0 +1,63 @@
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <stddef.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
int main(int argc, char *argv[]) {
char buf[1024];
ssize_t r;
if (argc != 2) {
fprintf(stderr, "Write to and read from a Unix domain socket.\n\nUsage: %s <socket>\n", argv[0]);
return 1;
}
size_t addrlen = strlen(argv[1]);
/* Allocate enough space for arbitrary-length paths */
char addrbuf[offsetof(struct sockaddr_un, sun_path) + addrlen + 1];
memset(addrbuf, 0, sizeof(addrbuf));
struct sockaddr_un *addr = (struct sockaddr_un *)addrbuf;
addr->sun_family = AF_UNIX;
memcpy(addr->sun_path, argv[1], addrlen+1);
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
fprintf(stderr, "Failed to create socket: %s\n", strerror(errno));
return 1;
}
if (connect(fd, (struct sockaddr*)addr, sizeof(addrbuf)) < 0) {
fprintf(stderr, "Can't connect to `%s': %s\n", argv[1], strerror(errno));
return 1;
}
/* Check if stdin refers to a terminal */
if (!isatty(fileno(stdin))) {
/* Read from stdin and write to socket */
while (0 < (r = fread(buf, 1, sizeof(buf), stdin))) {
send(fd, buf, r, 0);
}
}
/* Read from socket and write to stdout */
while (1) {
r = recv(fd, buf, sizeof(buf), 0);
if (r < 0) {
fprintf(stderr, "read: %s\n", strerror(errno));
return 1;
}
if (r == 0)
return 0;
fwrite(buf, r, 1, stdout);
}
return 0;
}

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