ref: e10ae98365bfd6d4f0cfb67304e32a5f16483f7d
dir: /kern/devip-posix.c/
#include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <netinet/tcp.h> #include <netdb.h> #include <arpa/inet.h> #include "u.h" #include "lib.h" #include "dat.h" #include "fns.h" #include "error.h" #include "ip.h" #include "devip.h" #undef listen #undef accept #undef bind static int family(unsigned char *addr) { if(isv4(addr)) return AF_INET; return AF_INET6; } static int addrlen(struct sockaddr_storage *ss) { switch(ss->ss_family){ case AF_INET: return sizeof(struct sockaddr_in); case AF_INET6: return sizeof(struct sockaddr_in6); } return 0; } void osipinit(void) { char buf[1024]; gethostname(buf, sizeof(buf)); kstrdup(&sysname, buf); } int so_socket(int type, unsigned char *addr) { int fd, one; switch(type) { default: error("bad protocol type"); case S_TCP: type = SOCK_STREAM; break; case S_UDP: type = SOCK_DGRAM; break; } fd = socket(family(addr), type, 0); if(fd < 0) oserror(); one = 1; if(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&one, sizeof(one)) > 0){ oserrstr(); print("setsockopt: %r"); } return fd; } void so_connect(int fd, unsigned char *raddr, unsigned short rport) { struct sockaddr_storage ss; memset(&ss, 0, sizeof(ss)); ss.ss_family = family(raddr); switch(ss.ss_family){ case AF_INET: hnputs(&((struct sockaddr_in*)&ss)->sin_port, rport); v6tov4((unsigned char*)&((struct sockaddr_in*)&ss)->sin_addr.s_addr, raddr); break; case AF_INET6: hnputs(&((struct sockaddr_in6*)&ss)->sin6_port, rport); memcpy(&((struct sockaddr_in6*)&ss)->sin6_addr.s6_addr, raddr, sizeof(struct in6_addr)); break; } if(connect(fd, (struct sockaddr*)&ss, addrlen(&ss)) < 0) oserror(); } void so_getsockname(int fd, unsigned char *laddr, unsigned short *lport) { socklen_t len; struct sockaddr_storage ss; len = sizeof(ss); if(getsockname(fd, (struct sockaddr*)&ss, &len) < 0) oserror(); switch(ss.ss_family){ case AF_INET: v4tov6(laddr, (unsigned char*)&((struct sockaddr_in*)&ss)->sin_addr.s_addr); *lport = nhgets(&((struct sockaddr_in*)&ss)->sin_port); break; case AF_INET6: memcpy(laddr, &((struct sockaddr_in6*)&ss)->sin6_addr.s6_addr, sizeof(struct in6_addr)); *lport = nhgets(&((struct sockaddr_in6*)&ss)->sin6_port); break; default: error("not AF_INET or AF_INET6"); } } void so_listen(int fd) { if(listen(fd, 5) < 0) oserror(); } int so_accept(int fd, unsigned char *raddr, unsigned short *rport) { int nfd; socklen_t len; struct sockaddr_storage ss; len = sizeof(ss); nfd = accept(fd, (struct sockaddr*)&ss, &len); if(nfd < 0) oserror(); switch(ss.ss_family){ case AF_INET: v4tov6(raddr, (unsigned char*)&((struct sockaddr_in*)&ss)->sin_addr.s_addr); *rport = nhgets(&((struct sockaddr_in*)&ss)->sin_port); break; case AF_INET6: memcpy(raddr, &((struct sockaddr_in6*)&ss)->sin6_addr.s6_addr, sizeof(struct in6_addr)); *rport = nhgets(&((struct sockaddr_in6*)&ss)->sin6_port); break; default: error("not AF_INET or AF_INET6"); } return nfd; } void so_bind(int fd, int su, unsigned short port, unsigned char *addr) { int i, one; struct sockaddr_storage ss; one = 1; if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&one, sizeof(one)) < 0){ oserrstr(); print("setsockopt: %r"); } if(su) { for(i = 600; i < 1024; i++) { memset(&ss, 0, sizeof(ss)); ss.ss_family = family(addr); switch(ss.ss_family){ case AF_INET: ((struct sockaddr_in*)&ss)->sin_port = i; break; case AF_INET6: ((struct sockaddr_in6*)&ss)->sin6_port = i; break; } if(bind(fd, (struct sockaddr*)&ss, addrlen(&ss)) >= 0) return; } oserror(); } memset(&ss, 0, sizeof(ss)); ss.ss_family = family(addr); switch(ss.ss_family){ case AF_INET: hnputs(&((struct sockaddr_in*)&ss)->sin_port, port); break; case AF_INET6: hnputs(&((struct sockaddr_in6*)&ss)->sin6_port, port); break; } if(bind(fd, (struct sockaddr*)&ss, addrlen(&ss)) < 0) oserror(); } int so_gethostbyname(char *host, char **hostv, int n) { char buf[INET6_ADDRSTRLEN]; struct addrinfo *r, *p; int i; r = NULL; if(getaddrinfo(host, NULL, NULL, &r)) return 0; for(i = 0, p = r; i < n && p != NULL; p = p->ai_next){ switch (p->ai_family) { default: continue; case AF_INET: inet_ntop(AF_INET, &((struct sockaddr_in*)p->ai_addr)->sin_addr, buf, sizeof(buf)); break; case AF_INET6: inet_ntop(AF_INET6, &((struct sockaddr_in6*)p->ai_addr)->sin6_addr, buf, sizeof(buf)); break; } hostv[i++] = strdup(buf); } freeaddrinfo(r); return i; } int so_getservbyname(char *service, char *net, char *port) { struct servent *s; s = getservbyname(service, net); if(s == 0) return -1; sprint(port, "%d", nhgets(&s->s_port)); return 0; } int so_send(int fd, void *d, int n, int f) { return send(fd, d, n, f); } int so_recv(int fd, void *d, int n, int f) { return recv(fd, d, n, f); }