From 7364e09f6849076c710ac9ce52a5d5fd2445e19c Mon Sep 17 00:00:00 2001 From: Martin Szulecki Date: Mon, 4 May 2009 18:18:40 +0200 Subject: Use autotools build system and add license Signed-off-by: Nikias Bassen --- sock_stuff.c | 298 ----------------------------------------------------------- 1 file changed, 298 deletions(-) delete mode 100644 sock_stuff.c (limited to 'sock_stuff.c') diff --git a/sock_stuff.c b/sock_stuff.c deleted file mode 100644 index b51d6ba..0000000 --- a/sock_stuff.c +++ /dev/null @@ -1,298 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "sock_stuff.h" - -#define RECV_TIMEOUT 20000 - -static int verbose = 0; - -void sock_stuff_set_verbose(int level) -{ - verbose = level; -} - -int create_unix_socket(const char *filename) -{ - struct sockaddr_un name; - int sock; - size_t size; - - // remove if still present - unlink(filename); - - /* Create the socket. */ - sock = socket(PF_LOCAL, SOCK_STREAM, 0); - if (sock < 0) { - perror("socket"); - return -1; - } - - /* Bind a name to the socket. */ - name.sun_family = AF_LOCAL; - strncpy(name.sun_path, filename, sizeof(name.sun_path)); - name.sun_path[sizeof(name.sun_path) - 1] = '\0'; - - /* The size of the address is - the offset of the start of the filename, - plus its length, - plus one for the terminating null byte. - Alternatively you can just do: - size = SUN_LEN (&name); - */ - size = (offsetof(struct sockaddr_un, sun_path) - + strlen(name.sun_path) + 1); - - if (bind(sock, (struct sockaddr *) &name, size) < 0) { - perror("bind"); - close(sock); - return -1; - } - - if (listen(sock, 10) < 0) { - perror("listen"); - close(sock); - return -1; - } - - return sock; -} - -int connect_unix_socket(const char *filename) -{ - struct sockaddr_un name; - int sfd = -1; - size_t size; - struct stat fst; - - // check if socket file exists... - if (stat(filename, &fst) != 0) { - if (verbose >= 2) - fprintf(stderr, "%s: stat '%s': %s\n", __func__, filename, - strerror(errno)); - return -1; - } - // ... and if it is a unix domain socket - if (!S_ISSOCK(fst.st_mode)) { - if (verbose >= 2) - fprintf(stderr, "%s: File '%s' is not a socket!\n", __func__, - filename); - return -1; - } - // make a new socket - if ((sfd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) { - if (verbose >= 2) - fprintf(stderr, "%s: socket: %s\n", __func__, strerror(errno)); - return -1; - } - // and connect to 'filename' - name.sun_family = AF_LOCAL; - strncpy(name.sun_path, filename, sizeof(name.sun_path)); - name.sun_path[sizeof(name.sun_path) - 1] = 0; - - size = (offsetof(struct sockaddr_un, sun_path) - + strlen(name.sun_path) + 1); - - if (connect(sfd, (struct sockaddr *) &name, size) < 0) { - close(sfd); - if (verbose >= 2) - fprintf(stderr, "%s: connect: %s\n", __func__, - strerror(errno)); - return -1; - } - - return sfd; -} - -int create_socket(uint16_t port) -{ - int sfd = -1; - int yes = 1; - struct sockaddr_in saddr; - - if (0 > (sfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))) { - perror("socket()"); - return -1; - } - - if (setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) { - perror("setsockopt()"); - close(sfd); - return -1; - } - - memset((void *) &saddr, 0, sizeof(saddr)); - saddr.sin_family = AF_INET; - saddr.sin_addr.s_addr = htonl(INADDR_ANY); - saddr.sin_port = htons(port); - - if (0 > bind(sfd, (struct sockaddr *) &saddr, sizeof(saddr))) { - perror("bind()"); - close(sfd); - return -1; - } - - if (listen(sfd, 1) == -1) { - perror("listen()"); - close(sfd); - return -1; - } - - return sfd; -} - -int connect_socket(const char *addr, uint16_t port) -{ - int sfd = -1; - int yes = 1; - struct hostent *hp; - struct sockaddr_in saddr; - - if (!addr) { - errno = EINVAL; - return -1; - } - - if ((hp = gethostbyname(addr)) == NULL) { - if (verbose >= 2) - fprintf(stderr, "%s: unknown host '%s'\n", __func__, addr); - return -1; - } - - if (!hp->h_addr) { - if (verbose >= 2) - fprintf(stderr, "%s: gethostbyname returned NULL address!\n", - __func__); - return -1; - } - - if (0 > (sfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))) { - perror("socket()"); - return -1; - } - - if (setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) { - perror("setsockopt()"); - close(sfd); - return -1; - } - - memset((void *) &saddr, 0, sizeof(saddr)); - saddr.sin_family = AF_INET; - saddr.sin_addr.s_addr = *(uint32_t *) hp->h_addr; - saddr.sin_port = htons(port); - - if (connect(sfd, (struct sockaddr *) &saddr, sizeof(saddr)) < 0) { - perror("connect"); - close(sfd); - return -2; - } - - return sfd; -} - -int check_fd(int fd, fd_mode fdm, unsigned int timeout) -{ - fd_set fds; - int sret; - int eagain; - struct timeval to; - - if (fd <= 0) { - if (verbose >= 2) - fprintf(stderr, "ERROR: invalid fd in check_fd %d\n", fd); - return -1; - } - - FD_ZERO(&fds); - FD_SET(fd, &fds); - - to.tv_sec = (time_t) (timeout / 1000); - to.tv_usec = (time_t) ((timeout - (to.tv_sec * 1000)) * 1000); - - sret = -1; - - do { - eagain = 0; - switch (fdm) { - case FD_READ: - sret = select(fd + 1, &fds, NULL, NULL, &to); - break; - case FD_WRITE: - sret = select(fd + 1, NULL, &fds, NULL, &to); - break; - case FD_EXCEPT: - sret = select(fd + 1, NULL, NULL, &fds, &to); - break; - default: - return -1; - } - - if (sret < 0) { - switch (errno) { - case EINTR: - // interrupt signal in select - if (verbose >= 2) - fprintf(stderr, "%s: EINTR\n", __func__); - eagain = 1; - break; - case EAGAIN: - if (verbose >= 2) - fprintf(stderr, "%s: EAGAIN\n", __func__); - break; - default: - if (verbose >= 2) - fprintf(stderr, "%s: select failed: %s\n", __func__, - strerror(errno)); - return -1; - } - } - } while (eagain); - - return sret; -} - -int recv_buf(int fd, void *data, size_t length) -{ - return recv_buf_timeout(fd, data, length, 0, RECV_TIMEOUT); -} - -int peek_buf(int fd, void *data, size_t length) -{ - return recv_buf_timeout(fd, data, length, MSG_PEEK, RECV_TIMEOUT); -} - -int recv_buf_timeout(int fd, void *data, size_t length, int flags, - unsigned int timeout) -{ - int res; - int result; - - // check if data is available - res = check_fd(fd, FD_READ, timeout); - if (res <= 0) { - return res; - } - // if we get here, there _is_ data available - result = recv(fd, data, length, flags); - if (res > 0 && result == 0) { - // but this is an error condition - if (verbose >= 3) - fprintf(stderr, "%s: fd=%d recv returned 0\n", __func__, fd); - return -1; - } - return result; -} - -int send_buf(int fd, void *data, size_t length) -{ - return send(fd, data, length, 0); -} -- cgit v1.1-32-gdbae