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Date:: Sat Feb 18 13:57:06 2006 UTC
Message:: correct size
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  1 06f4d920 2005-02-13 devnull #include <u.h>
  2 06f4d920 2005-02-13 devnull #define NOPLAN9DEFINES
  3 06f4d920 2005-02-13 devnull #include <libc.h>
  4 06f4d920 2005-02-13 devnull 
  5 06f4d920 2005-02-13 devnull #include <sys/socket.h>
  6 06f4d920 2005-02-13 devnull #include <netinet/in.h>
  7 06f4d920 2005-02-13 devnull #include <netinet/tcp.h>
  8 06f4d920 2005-02-13 devnull #include <sys/un.h>
  9 06f4d920 2005-02-13 devnull #include <errno.h>
 10 06f4d920 2005-02-13 devnull 
 11 06f4d920 2005-02-13 devnull #undef sun
 12 06f4d920 2005-02-13 devnull #define sun sockun
 13 06f4d920 2005-02-13 devnull 
 14 06f4d920 2005-02-13 devnull extern int _p9netfd(char*);
 15 06f4d920 2005-02-13 devnull 
 16 06f4d920 2005-02-13 devnull static char *unknown = "unknown";
 17 06f4d920 2005-02-13 devnull 
 18 06f4d920 2005-02-13 devnull static int
 19 06f4d920 2005-02-13 devnull convert(int s, struct sockaddr *sa, char **lsys, char **lserv, char **laddr)
 20 06f4d920 2005-02-13 devnull {
 21 06f4d920 2005-02-13 devnull 	struct sockaddr_un *sun;
 22 06f4d920 2005-02-13 devnull 	struct sockaddr_in *sin;
 23 06f4d920 2005-02-13 devnull 	uchar *ip;
 24 06f4d920 2005-02-13 devnull 	u32int ipl;
 25 06f4d920 2005-02-13 devnull 	socklen_t sn;
 26 06f4d920 2005-02-13 devnull 	int n;
 27 06f4d920 2005-02-13 devnull 	char *net;
 28 06f4d920 2005-02-13 devnull 	
 29 06f4d920 2005-02-13 devnull 	switch(sa->sa_family){
 30 06f4d920 2005-02-13 devnull 	case AF_INET:
 31 06f4d920 2005-02-13 devnull 		sin = (void*)sa;
 32 06f4d920 2005-02-13 devnull 		ip = (uchar*)&sin->sin_addr;
 33 06f4d920 2005-02-13 devnull 		ipl = *(u32int*)ip;
 34 06f4d920 2005-02-13 devnull 		if(ipl == 0)
 35 06f4d920 2005-02-13 devnull 			*lsys = strdup("*");
 36 06f4d920 2005-02-13 devnull 		else
 37 06f4d920 2005-02-13 devnull 			*lsys = smprint("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
 38 06f4d920 2005-02-13 devnull 		*lserv = smprint("%d", ntohs(sin->sin_port));
 39 06f4d920 2005-02-13 devnull 		sn = sizeof n;
 40 06f4d920 2005-02-13 devnull 		if(getsockopt(s, SOL_SOCKET, SO_TYPE, (void*)&n, &sn) < 0)
 41 06f4d920 2005-02-13 devnull 			return -1;
 42 06f4d920 2005-02-13 devnull 		if(n == SOCK_STREAM)
 43 06f4d920 2005-02-13 devnull 			net = "tcp";
 44 06f4d920 2005-02-13 devnull 		else if(n == SOCK_DGRAM)
 45 06f4d920 2005-02-13 devnull 			net = "udp";
 46 06f4d920 2005-02-13 devnull 		else{
 47 06f4d920 2005-02-13 devnull 			werrstr("unknown network type");
 48 06f4d920 2005-02-13 devnull 			return -1;
 49 06f4d920 2005-02-13 devnull 		}
 50 06f4d920 2005-02-13 devnull 		*laddr = smprint("%s!%s!%s", net, *lsys, *lserv);
 51 06f4d920 2005-02-13 devnull 		if(*lsys == nil || *lserv == nil || *laddr == nil)
 52 06f4d920 2005-02-13 devnull 			return -1;
 53 06f4d920 2005-02-13 devnull 		return 0;
 54 06f4d920 2005-02-13 devnull 	case AF_UNIX:
 55 06f4d920 2005-02-13 devnull 		sun = (void*)sa;
 56 06f4d920 2005-02-13 devnull 		*lsys = unknown;
 57 06f4d920 2005-02-13 devnull 		*lserv = unknown;
 58 06f4d920 2005-02-13 devnull 		*laddr = smprint("unix!%s", sun->sun_path);
 59 06f4d920 2005-02-13 devnull 		if(*laddr == nil)
 60 06f4d920 2005-02-13 devnull 			return -1;
 61 06f4d920 2005-02-13 devnull 		return 0;
 62 06f4d920 2005-02-13 devnull 	default:
 63 06f4d920 2005-02-13 devnull 		werrstr("unknown socket family");
 64 06f4d920 2005-02-13 devnull 		return -1;
 65 06f4d920 2005-02-13 devnull 	}
 66 06f4d920 2005-02-13 devnull }
 67 06f4d920 2005-02-13 devnull 
 68 06f4d920 2005-02-13 devnull NetConnInfo*
 69 06f4d920 2005-02-13 devnull getnetconninfo(char *dir, int fd)
 70 06f4d920 2005-02-13 devnull {
 71 06f4d920 2005-02-13 devnull 	socklen_t sn;
 72 06f4d920 2005-02-13 devnull 	union {
 73 06f4d920 2005-02-13 devnull 		struct sockaddr sa;
 74 06f4d920 2005-02-13 devnull 		struct sockaddr_in sin;
 75 06f4d920 2005-02-13 devnull 		struct sockaddr_un sun;
 76 06f4d920 2005-02-13 devnull 	} u;
 77 06f4d920 2005-02-13 devnull 	NetConnInfo *nci;
 78 06f4d920 2005-02-13 devnull 
 79 06f4d920 2005-02-13 devnull 	if(dir){
 80 06f4d920 2005-02-13 devnull 		if((fd = _p9netfd(dir)) < 0){
 81 06f4d920 2005-02-13 devnull 			werrstr("no such network connection %s", dir);
 82 06f4d920 2005-02-13 devnull 			return nil;
 83 06f4d920 2005-02-13 devnull 		}
 84 06f4d920 2005-02-13 devnull 	}
 85 06f4d920 2005-02-13 devnull 
 86 06f4d920 2005-02-13 devnull 	nci = mallocz(sizeof *nci, 1);
 87 06f4d920 2005-02-13 devnull 	if(nci == nil)
 88 06f4d920 2005-02-13 devnull 		goto err;
 89 06f4d920 2005-02-13 devnull 	nci->dir = smprint("/dev/fd/%d", fd);
 90 06f4d920 2005-02-13 devnull 	nci->root = strdup("/net");
 91 06f4d920 2005-02-13 devnull 	nci->spec = unknown;
 92 06f4d920 2005-02-13 devnull 	if(nci->dir == nil || nci->root == nil)
 93 06f4d920 2005-02-13 devnull 		goto err;
 94 493b97a4 2006-02-18 devnull 	sn = sizeof u;
 95 06f4d920 2005-02-13 devnull 	if(getsockname(fd, &u.sa, &sn) < 0)
 96 06f4d920 2005-02-13 devnull 		goto err;
 97 06f4d920 2005-02-13 devnull 	if(convert(fd, &u.sa, &nci->lsys, &nci->lserv, &nci->laddr) < 0)
 98 06f4d920 2005-02-13 devnull 		goto err;
 99 493b97a4 2006-02-18 devnull 	sn = sizeof u;
100 06f4d920 2005-02-13 devnull 	if(getpeername(fd, &u.sa, &sn) < 0)
101 06f4d920 2005-02-13 devnull 		goto err;
102 06f4d920 2005-02-13 devnull 	if(convert(fd, &u.sa, &nci->rsys, &nci->rserv, &nci->raddr) < 0)
103 06f4d920 2005-02-13 devnull 		goto err;
104 06f4d920 2005-02-13 devnull 	return nci;
105 06f4d920 2005-02-13 devnull 
106 06f4d920 2005-02-13 devnull err:
107 06f4d920 2005-02-13 devnull 	freenetconninfo(nci);
108 06f4d920 2005-02-13 devnull 	return nil;
109 06f4d920 2005-02-13 devnull }
110 06f4d920 2005-02-13 devnull 
111 06f4d920 2005-02-13 devnull static void
112 06f4d920 2005-02-13 devnull xfree(void *v)
113 06f4d920 2005-02-13 devnull {
114 06f4d920 2005-02-13 devnull 	if(v != nil && v != unknown)
115 06f4d920 2005-02-13 devnull 		free(v);
116 06f4d920 2005-02-13 devnull }
117 06f4d920 2005-02-13 devnull 
118 06f4d920 2005-02-13 devnull void
119 06f4d920 2005-02-13 devnull freenetconninfo(NetConnInfo *nci)
120 06f4d920 2005-02-13 devnull {
121 06f4d920 2005-02-13 devnull 	if(nci == nil)
122 06f4d920 2005-02-13 devnull 		return;
123 06f4d920 2005-02-13 devnull 	xfree(nci->dir);
124 06f4d920 2005-02-13 devnull 	xfree(nci->root);
125 06f4d920 2005-02-13 devnull 	xfree(nci->spec);
126 06f4d920 2005-02-13 devnull 	xfree(nci->lsys);
127 06f4d920 2005-02-13 devnull 	xfree(nci->lserv);
128 06f4d920 2005-02-13 devnull 	xfree(nci->rsys);
129 06f4d920 2005-02-13 devnull 	xfree(nci->rserv);
130 06f4d920 2005-02-13 devnull 	xfree(nci->laddr);
131 06f4d920 2005-02-13 devnull 	xfree(nci->raddr);
132 06f4d920 2005-02-13 devnull 	free(nci);
133 06f4d920 2005-02-13 devnull }
134 06f4d920 2005-02-13 devnull