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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 124102 $")
00031
00032 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__) || defined(__Darwin__)
00033 #include <net/if_dl.h>
00034 #endif
00035
00036 #if defined (SOLARIS)
00037 #include <sys/sockio.h>
00038 #elif defined(HAVE_GETIFADDRS)
00039 #include <ifaddrs.h>
00040 #endif
00041
00042 #include "asterisk/netsock.h"
00043 #include "asterisk/utils.h"
00044 #include "asterisk/astobj.h"
00045
00046 struct ast_netsock {
00047 ASTOBJ_COMPONENTS(struct ast_netsock);
00048 struct sockaddr_in bindaddr;
00049 int sockfd;
00050 int *ioref;
00051 struct io_context *ioc;
00052 void *data;
00053 };
00054
00055 struct ast_netsock_list {
00056 ASTOBJ_CONTAINER_COMPONENTS(struct ast_netsock);
00057 struct io_context *ioc;
00058 };
00059
00060 static void ast_netsock_destroy(struct ast_netsock *netsock)
00061 {
00062 ast_io_remove(netsock->ioc, netsock->ioref);
00063 close(netsock->sockfd);
00064 ast_free(netsock);
00065 }
00066
00067 struct ast_netsock_list *ast_netsock_list_alloc(void)
00068 {
00069 return ast_calloc(1, sizeof(struct ast_netsock_list));
00070 }
00071
00072 int ast_netsock_init(struct ast_netsock_list *list)
00073 {
00074 memset(list, 0, sizeof(*list));
00075 ASTOBJ_CONTAINER_INIT(list);
00076
00077 return 0;
00078 }
00079
00080 int ast_netsock_release(struct ast_netsock_list *list)
00081 {
00082 ASTOBJ_CONTAINER_DESTROYALL(list, ast_netsock_destroy);
00083 ASTOBJ_CONTAINER_DESTROY(list);
00084
00085 return 0;
00086 }
00087
00088 struct ast_netsock *ast_netsock_find(struct ast_netsock_list *list,
00089 struct sockaddr_in *sa)
00090 {
00091 struct ast_netsock *sock = NULL;
00092
00093 ASTOBJ_CONTAINER_TRAVERSE(list, !sock, {
00094 ASTOBJ_RDLOCK(iterator);
00095 if (!inaddrcmp(&iterator->bindaddr, sa))
00096 sock = iterator;
00097 ASTOBJ_UNLOCK(iterator);
00098 });
00099
00100 return sock;
00101 }
00102
00103 struct ast_netsock *ast_netsock_bindaddr(struct ast_netsock_list *list, struct io_context *ioc, struct sockaddr_in *bindaddr, int tos, int cos, ast_io_cb callback, void *data)
00104 {
00105 int netsocket = -1;
00106 int *ioref;
00107
00108 struct ast_netsock *ns;
00109 const int reuseFlag = 1;
00110
00111
00112 netsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
00113
00114 if (netsocket < 0) {
00115 ast_log(LOG_ERROR, "Unable to create network socket: %s\n", strerror(errno));
00116 return NULL;
00117 }
00118 if (setsockopt(netsocket, SOL_SOCKET, SO_REUSEADDR, (char *)&reuseFlag, sizeof reuseFlag) < 0) {
00119 ast_log(LOG_WARNING, "Error setting SO_REUSEADDR on sockfd '%d'\n", netsocket);
00120 }
00121 if (bind(netsocket,(struct sockaddr *)bindaddr, sizeof(struct sockaddr_in))) {
00122 ast_log(LOG_ERROR, "Unable to bind to %s port %d: %s\n", ast_inet_ntoa(bindaddr->sin_addr), ntohs(bindaddr->sin_port), strerror(errno));
00123 close(netsocket);
00124 return NULL;
00125 }
00126
00127 ast_netsock_set_qos(netsocket, tos, cos, "IAX2");
00128
00129 ast_enable_packet_fragmentation(netsocket);
00130
00131 if (!(ns = ast_calloc(1, sizeof(*ns)))) {
00132 close(netsocket);
00133 return NULL;
00134 }
00135
00136
00137 if (!(ioref = ast_io_add(ioc, netsocket, callback, AST_IO_IN, ns))) {
00138 close(netsocket);
00139 ast_free(ns);
00140 return NULL;
00141 }
00142 ASTOBJ_INIT(ns);
00143 ns->ioref = ioref;
00144 ns->ioc = ioc;
00145 ns->sockfd = netsocket;
00146 ns->data = data;
00147 memcpy(&ns->bindaddr, bindaddr, sizeof(ns->bindaddr));
00148 ASTOBJ_CONTAINER_LINK(list, ns);
00149
00150 return ns;
00151 }
00152
00153 int ast_netsock_set_qos(int netsocket, int tos, int cos, const char *desc)
00154 {
00155 int res;
00156
00157 if ((res = setsockopt(netsocket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
00158 ast_log(LOG_WARNING, "Unable to set %s TOS to %d, may be you have no root privileges\n", desc, tos);
00159 else if (tos)
00160 ast_verb(2, "Using %s TOS bits %d\n", desc, tos);
00161
00162 #if defined(linux)
00163 if (setsockopt(netsocket, SOL_SOCKET, SO_PRIORITY, &cos, sizeof(cos)))
00164 ast_log(LOG_WARNING, "Unable to set %s CoS to %d\n", desc, cos);
00165 else if (cos)
00166 ast_verb(2, "Using %s CoS mark %d\n", desc, cos);
00167 #endif
00168
00169 return res;
00170 }
00171
00172
00173 struct ast_netsock *ast_netsock_bind(struct ast_netsock_list *list, struct io_context *ioc, const char *bindinfo, int defaultport, int tos, int cos, ast_io_cb callback, void *data)
00174 {
00175 struct sockaddr_in sin;
00176 char *tmp;
00177 char *host;
00178 char *port;
00179 int portno;
00180
00181 memset(&sin, 0, sizeof(sin));
00182 sin.sin_family = AF_INET;
00183 sin.sin_port = htons(defaultport);
00184 tmp = ast_strdupa(bindinfo);
00185
00186 host = strsep(&tmp, ":");
00187 port = tmp;
00188
00189 if (port && ((portno = atoi(port)) > 0))
00190 sin.sin_port = htons(portno);
00191
00192 inet_aton(host, &sin.sin_addr);
00193
00194 return ast_netsock_bindaddr(list, ioc, &sin, tos, cos, callback, data);
00195 }
00196
00197 int ast_netsock_sockfd(const struct ast_netsock *ns)
00198 {
00199 return ns ? ns-> sockfd : -1;
00200 }
00201
00202 const struct sockaddr_in *ast_netsock_boundaddr(const struct ast_netsock *ns)
00203 {
00204 return &(ns->bindaddr);
00205 }
00206
00207 void *ast_netsock_data(const struct ast_netsock *ns)
00208 {
00209 return ns->data;
00210 }
00211
00212 void ast_netsock_unref(struct ast_netsock *ns)
00213 {
00214 ASTOBJ_UNREF(ns, ast_netsock_destroy);
00215 }
00216
00217 char *ast_eid_to_str(char *s, int maxlen, struct ast_eid *eid)
00218 {
00219 int x;
00220 char *os = s;
00221 if (maxlen < 18) {
00222 if (s && (maxlen > 0))
00223 *s = '\0';
00224 } else {
00225 for (x = 0; x < 5; x++) {
00226 sprintf(s, "%02x:", eid->eid[x]);
00227 s += 3;
00228 }
00229 sprintf(s, "%02x", eid->eid[5]);
00230 }
00231 return os;
00232 }
00233
00234 void ast_set_default_eid(struct ast_eid *eid)
00235 {
00236 #if defined(SIOCGIFHWADDR)
00237 int s, x = 0;
00238 char eid_str[20];
00239 struct ifreq ifr;
00240
00241 s = socket(AF_INET, SOCK_STREAM, 0);
00242 if (s < 0)
00243 return;
00244 for (x = 0; x < 10; x++) {
00245 memset(&ifr, 0, sizeof(ifr));
00246 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "eth%d", x);
00247 if (ioctl(s, SIOCGIFHWADDR, &ifr))
00248 continue;
00249 memcpy(eid, ((unsigned char *)&ifr.ifr_hwaddr) + 2, sizeof(*eid));
00250 ast_debug(1, "Seeding global EID '%s' from '%s' using 'siocgifhwaddr'\n", ast_eid_to_str(eid_str, sizeof(eid_str), eid), ifr.ifr_name);
00251 close(s);
00252 return;
00253 }
00254 close(s);
00255 #else
00256 #if defined(ifa_broadaddr) && !defined(SOLARIS)
00257 char eid_str[20];
00258 struct ifaddrs *ifap;
00259
00260 if (getifaddrs(&ifap) == 0) {
00261 struct ifaddrs *p;
00262 for (p = ifap; p; p = p->ifa_next) {
00263 if ((p->ifa_addr->sa_family == AF_LINK) && !(p->ifa_flags & IFF_LOOPBACK) && (p->ifa_flags & IFF_RUNNING)) {
00264 struct sockaddr_dl* sdp = (struct sockaddr_dl*) p->ifa_addr;
00265 memcpy(&(eid->eid), sdp->sdl_data + sdp->sdl_nlen, 6);
00266 ast_debug(1, "Seeding global EID '%s' from '%s' using 'getifaddrs'\n", ast_eid_to_str(eid_str, sizeof(eid_str), eid), p->ifa_name);
00267 freeifaddrs(ifap);
00268 return;
00269 }
00270 }
00271 freeifaddrs(ifap);
00272 }
00273 #endif
00274 #endif
00275 ast_debug(1, "No ethernet interface found for seeding global EID. You will have to set it manually.\n");
00276 }
00277
00278 int ast_str_to_eid(struct ast_eid *eid, const char *s)
00279 {
00280 unsigned int eid_int[6];
00281 int x;
00282
00283 if (sscanf(s, "%x:%x:%x:%x:%x:%x", &eid_int[0], &eid_int[1], &eid_int[2],
00284 &eid_int[3], &eid_int[4], &eid_int[5]) != 6)
00285 return -1;
00286
00287 for (x = 0; x < 6; x++)
00288 eid->eid[x] = eid_int[x];
00289
00290 return 0;
00291 }
00292
00293 int ast_eid_cmp(const struct ast_eid *eid1, const struct ast_eid *eid2)
00294 {
00295 return memcmp(eid1, eid2, sizeof(*eid1));
00296 }