1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
13 #include "socket-util.h"
15 int address_parse(Address *a, const char *s) {
23 memset(a, 0, sizeof(*a));
26 /* IPv6 in [x:.....:z]:p notation */
28 if (!(e = strchr(s+1, ']')))
31 if (!(n = strndup(s+1, e-s-1)))
35 if (inet_pton(AF_INET6, n, &a->sockaddr.in6.sin6_addr) <= 0) {
37 return errno != 0 ? -errno : -EINVAL;
47 if ((r = safe_atou(e, &u)) < 0)
50 if (u <= 0 || u > 0xFFFF)
53 a->sockaddr.in6.sin6_family = AF_INET6;
54 a->sockaddr.in6.sin6_port = htons((uint16_t) u);
55 a->size = sizeof(struct sockaddr_in6);
56 a->bind_ipv6_only = true;
58 } else if (*s == '/') {
64 if (l >= sizeof(a->sockaddr.un.sun_path))
67 a->sockaddr.un.sun_family = AF_UNIX;
68 memcpy(a->sockaddr.un.sun_path, s, l);
69 a->size = sizeof(sa_family_t) + l + 1;
71 } else if (*s == '=') {
72 /* Abstract AF_UNIX socket */
76 if (l >= sizeof(a->sockaddr.un.sun_path) - 1)
79 a->sockaddr.un.sun_family = AF_UNIX;
80 memcpy(a->sockaddr.un.sun_path+1, s+1, l);
81 a->size = sizeof(struct sockaddr_un);
85 if ((e = strchr(s, ':'))) {
87 /* IPv4 in w.x.y.z:p notation */
88 if (!(n = strndup(s, e-s)))
92 if (inet_pton(AF_INET, n, &a->sockaddr.in4.sin_addr) <= 0) {
94 return errno != 0 ? -errno : -EINVAL;
100 if ((r = safe_atou(e, &u)) < 0)
103 if (u <= 0 || u > 0xFFFF)
106 a->sockaddr.in4.sin_family = AF_INET;
107 a->sockaddr.in4.sin_port = htons((uint16_t) u);
108 a->size = sizeof(struct sockaddr_in);
112 if ((r = safe_atou(s, &u)) < 0)
115 if (u <= 0 || u > 0xFFFF)
118 a->sockaddr.in6.sin6_family = AF_INET6;
119 memcpy(&a->sockaddr.in6.sin6_addr, &in6addr_any, INET6_ADDRSTRLEN);
120 a->sockaddr.in6.sin6_port = htons((uint16_t) u);
121 a->size = sizeof(struct sockaddr_in6);
128 int address_verify(const Address *a) {
131 switch (address_family(a)) {
133 if (a->size != sizeof(struct sockaddr_in))
136 if (a->sockaddr.in4.sin_port == 0)
142 if (a->size != sizeof(struct sockaddr_in6))
145 if (a->sockaddr.in6.sin6_port == 0)
151 if (a->size < sizeof(sa_family_t))
154 if (a->size > sizeof(sa_family_t)) {
156 if (a->sockaddr.un.sun_path[0] == 0) {
158 if (a->size != sizeof(struct sockaddr_un))
164 if (!(e = memchr(a->sockaddr.un.sun_path, 0, sizeof(a->sockaddr.un.sun_path))))
167 if (a->size != sizeof(sa_family_t) + (e - a->sockaddr.un.sun_path) + 1)
175 return -EAFNOSUPPORT;
179 int address_print(const Address *a, char **p) {
184 if ((r = address_verify(a)) < 0)
187 switch (address_family(a)) {
191 if (!(ret = new(char, INET_ADDRSTRLEN+1+5+1)))
194 if (!inet_ntop(AF_INET, &a->sockaddr.in4.sin_addr, ret, INET_ADDRSTRLEN)) {
199 sprintf(strchr(ret, 0), ":%u", ntohs(a->sockaddr.in4.sin_port));
207 if (!(ret = new(char, 1+INET6_ADDRSTRLEN+2+5+1)))
211 if (!inet_ntop(AF_INET6, &a->sockaddr.in6.sin6_addr, ret+1, INET6_ADDRSTRLEN)) {
216 sprintf(strchr(ret, 0), "]:%u", ntohs(a->sockaddr.in6.sin6_port));
224 if (a->size <= sizeof(sa_family_t)) {
226 if (!(ret = strdup("<unamed>")))
229 } else if (a->sockaddr.un.sun_path[0] == 0) {
232 /* FIXME: We assume we can print the
233 * socket path here and that it hasn't
234 * more than one NUL byte. That is
235 * actually an invalid assumption */
237 if (!(ret = new(char, sizeof(a->sockaddr.un.sun_path)+1)))
241 memcpy(ret+1, a->sockaddr.un.sun_path+1, sizeof(a->sockaddr.un.sun_path)-1);
242 ret[sizeof(a->sockaddr.un.sun_path)] = 0;
246 if (!(ret = strdup(a->sockaddr.un.sun_path)))
259 int address_listen(const Address *a, int backlog) {
263 if ((r = address_verify(a)) < 0)
266 if ((fd = socket(address_family(a), a->type, 0)) < 0)
269 if (bind(fd, &a->sockaddr.sa, a->size) < 0) {
274 if (a->type == SOCK_STREAM)
275 if (listen(fd, backlog) < 0) {
280 if (address_family(a) == AF_INET6) {
281 int flag = a->bind_ipv6_only;
283 if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &flag, sizeof(flag)) < 0) {