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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/un.h>
#include <errno.h>
#include "ipcsocket.h"
int opensocket(int *sockfd, const char *name, int connecttype)
{
int ret, temp = 1;
if (!name || strlen(name) > MAX_SOCK_NAME_LEN) {
fprintf(stderr, "<%s>: Invalid socket name.\n", __func__);
return -1;
}
ret = socket(PF_LOCAL, SOCK_STREAM, 0);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed socket: <%s>\n",
__func__, strerror(errno));
return ret;
}
*sockfd = ret;
if (setsockopt(*sockfd, SOL_SOCKET, SO_REUSEADDR,
(char *)&temp, sizeof(int)) < 0) {
fprintf(stderr, "<%s>: Failed setsockopt: <%s>\n",
__func__, strerror(errno));
goto err;
}
sprintf(sock_name, "/tmp/%s", name);
if (connecttype == 1) {
/* This is for Server connection */
struct sockaddr_un skaddr;
int clientfd;
socklen_t sklen;
unlink(sock_name);
memset(&skaddr, 0, sizeof(skaddr));
skaddr.sun_family = AF_LOCAL;
strcpy(skaddr.sun_path, sock_name);
ret = bind(*sockfd, (struct sockaddr *)&skaddr,
SUN_LEN(&skaddr));
if (ret < 0) {
fprintf(stderr, "<%s>: Failed bind: <%s>\n",
__func__, strerror(errno));
goto err;
}
ret = listen(*sockfd, 5);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed listen: <%s>\n",
__func__, strerror(errno));
goto err;
}
memset(&skaddr, 0, sizeof(skaddr));
sklen = sizeof(skaddr);
ret = accept(*sockfd, (struct sockaddr *)&skaddr,
(socklen_t *)&sklen);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed accept: <%s>\n",
__func__, strerror(errno));
goto err;
}
clientfd = ret;
*sockfd = clientfd;
} else {
/* This is for client connection */
struct sockaddr_un skaddr;
memset(&skaddr, 0, sizeof(skaddr));
skaddr.sun_family = AF_LOCAL;
strcpy(skaddr.sun_path, sock_name);
ret = connect(*sockfd, (struct sockaddr *)&skaddr,
SUN_LEN(&skaddr));
if (ret < 0) {
fprintf(stderr, "<%s>: Failed connect: <%s>\n",
__func__, strerror(errno));
goto err;
}
}
return 0;
err:
if (*sockfd)
close(*sockfd);
return ret;
}
int sendtosocket(int sockfd, struct socketdata *skdata)
{
int ret, buffd;
unsigned int len;
char cmsg_b[CMSG_SPACE(sizeof(int))];
struct cmsghdr *cmsg;
struct msghdr msgh;
struct iovec iov;
struct timeval timeout;
fd_set selFDs;
if (!skdata) {
fprintf(stderr, "<%s>: socketdata is NULL\n", __func__);
return -1;
}
FD_ZERO(&selFDs);
FD_SET(0, &selFDs);
FD_SET(sockfd, &selFDs);
timeout.tv_sec = 20;
timeout.tv_usec = 0;
ret = select(sockfd+1, NULL, &selFDs, NULL, &timeout);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed select: <%s>\n",
__func__, strerror(errno));
return -1;
}
if (FD_ISSET(sockfd, &selFDs)) {
buffd = skdata->data;
len = skdata->len;
memset(&msgh, 0, sizeof(msgh));
msgh.msg_control = &cmsg_b;
msgh.msg_controllen = CMSG_LEN(len);
iov.iov_base = "OK";
iov.iov_len = 2;
msgh.msg_iov = &iov;
msgh.msg_iovlen = 1;
cmsg = CMSG_FIRSTHDR(&msgh);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(len);
memcpy(CMSG_DATA(cmsg), &buffd, len);
ret = sendmsg(sockfd, &msgh, MSG_DONTWAIT);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed sendmsg: <%s>\n",
__func__, strerror(errno));
return -1;
}
}
return 0;
}
int receivefromsocket(int sockfd, struct socketdata *skdata)
{
int ret, buffd;
unsigned int len = 0;
char cmsg_b[CMSG_SPACE(sizeof(int))];
struct cmsghdr *cmsg;
struct msghdr msgh;
struct iovec iov;
fd_set recvFDs;
char data[32];
if (!skdata) {
fprintf(stderr, "<%s>: socketdata is NULL\n", __func__);
return -1;
}
FD_ZERO(&recvFDs);
FD_SET(0, &recvFDs);
FD_SET(sockfd, &recvFDs);
ret = select(sockfd+1, &recvFDs, NULL, NULL, NULL);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed select: <%s>\n",
__func__, strerror(errno));
return -1;
}
if (FD_ISSET(sockfd, &recvFDs)) {
len = sizeof(buffd);
memset(&msgh, 0, sizeof(msgh));
msgh.msg_control = &cmsg_b;
msgh.msg_controllen = CMSG_LEN(len);
iov.iov_base = data;
iov.iov_len = sizeof(data)-1;
msgh.msg_iov = &iov;
msgh.msg_iovlen = 1;
cmsg = CMSG_FIRSTHDR(&msgh);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(len);
ret = recvmsg(sockfd, &msgh, MSG_DONTWAIT);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed recvmsg: <%s>\n",
__func__, strerror(errno));
return -1;
}
memcpy(&buffd, CMSG_DATA(cmsg), len);
skdata->data = buffd;
skdata->len = len;
}
return 0;
}
int closesocket(int sockfd, char *name)
{
char sockname[MAX_SOCK_NAME_LEN];
if (sockfd)
close(sockfd);
sprintf(sockname, "/tmp/%s", name);
unlink(sockname);
shutdown(sockfd, 2);
return 0;
}
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