--- /dev/null
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/*
+ * This version of ecore_con_info use c-ares to provide asynchronous dns lookup.
+ *
+ * Note: It doesn't fork nor does it use libc getaddrinfo.
+ * http://c-ares.haxx.se/docs.html
+ */
+
+#include <string.h>
+#include <arpa/inet.h>
+#include <ares.h>
+
+#include "Ecore.h"
+#include "Ecore_Con.h"
+#include "ecore_con_private.h"
+
+typedef struct _Ecore_Con_FD Ecore_Con_FD;
+typedef struct _Ecore_Con_CAres Ecore_Con_CAres;
+
+struct _Ecore_Con_FD
+{
+ Ecore_Fd_Handler *handler;
+ int active;
+ int fd;
+};
+
+struct _Ecore_Con_CAres
+{
+ Ecore_Con_Server *svr;
+ Ecore_Con_Info_Cb done_cb;
+ void *data;
+ struct addrinfo hints;
+ Ecore_Con_Info *result;
+
+ union {
+ struct in_addr v4;
+ struct in6_addr v6;
+ } addr;
+
+ Eina_Bool byaddr;
+};
+
+static ares_channel info_channel;
+static int info_init = 0;
+static Eina_List *info_fds = NULL;
+static int active = 0;
+static Ecore_Timer *tm = NULL;
+static fd_set info_readers, info_writers;
+
+static void _ecore_con_info_ares_nameinfo(Ecore_Con_CAres *arg, int status, int timeouts, char *node, char *service);
+static void _ecore_con_info_ares_host_cb(Ecore_Con_CAres *arg, int status, int timeouts, struct hostent *hostent);
+static int _ecore_con_info_cares_fd_cb(void *data, Ecore_Fd_Handler *fd_handler);
+static int _ecore_con_info_cares_timeout_cb(void *data);
+static void _ecore_con_info_cares_clean(void);
+
+EAPI int
+ecore_con_info_init(void)
+{
+ if (info_init == 0)
+ {
+ if (ares_library_init(ARES_LIB_INIT_ALL) != 0)
+ return 0;
+ if (ares_init(&info_channel) != ARES_SUCCESS)
+ {
+ ares_library_cleanup();
+ return 0;
+ }
+ }
+
+ info_init++;
+ return info_init;
+}
+
+EAPI int
+ecore_con_info_shutdown(void)
+{
+ info_init--;
+ if (info_init == 0)
+ {
+ /* Cancel all ongoing request */
+ ares_cancel(info_channel);
+ ares_destroy(info_channel);
+
+ /* Destroy FD handler here. */
+ /* Shutdown ares */
+ ares_library_cleanup();
+ }
+ return info_init;
+}
+
+int
+ecore_con_info_tcp_connect(Ecore_Con_Server *svr,
+ Ecore_Con_Info_Cb done_cb,
+ void *data)
+{
+ struct addrinfo hints;
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_CANONNAME;
+ hints.ai_protocol = IPPROTO_TCP;
+ hints.ai_canonname = NULL;
+ hints.ai_next = NULL;
+ hints.ai_addr = NULL;
+
+ return ecore_con_info_get(svr, done_cb, data, &hints);
+}
+
+int
+ecore_con_info_tcp_listen(Ecore_Con_Server *svr,
+ Ecore_Con_Info_Cb done_cb,
+ void *data)
+{
+ struct addrinfo hints;
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_PASSIVE;
+ hints.ai_protocol = IPPROTO_TCP;
+ hints.ai_canonname = NULL;
+ hints.ai_next = NULL;
+ hints.ai_addr = NULL;
+
+ return ecore_con_info_get(svr, done_cb, data, &hints);
+}
+
+int
+ecore_con_info_udp_connect(Ecore_Con_Server *svr,
+ Ecore_Con_Info_Cb done_cb,
+ void *data)
+{
+ struct addrinfo hints;
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_flags = AI_CANONNAME;
+ hints.ai_protocol = IPPROTO_UDP;
+ hints.ai_canonname = NULL;
+ hints.ai_next = NULL;
+ hints.ai_addr = NULL;
+
+ return ecore_con_info_get(svr, done_cb, data, &hints);
+}
+
+int
+ecore_con_info_udp_listen(Ecore_Con_Server *svr,
+ Ecore_Con_Info_Cb done_cb,
+ void *data)
+{
+ struct addrinfo hints;
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_flags = AI_PASSIVE;
+ hints.ai_protocol = IPPROTO_UDP;
+ hints.ai_canonname = NULL;
+ hints.ai_next = NULL;
+ hints.ai_addr = NULL;
+
+ return ecore_con_info_get(svr, done_cb, data, &hints);
+}
+
+int
+ecore_con_info_mcast_listen(Ecore_Con_Server *svr,
+ Ecore_Con_Info_Cb done_cb,
+ void *data)
+{
+ struct addrinfo hints;
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_flags = 0;
+ hints.ai_protocol = IPPROTO_UDP;
+ hints.ai_canonname = NULL;
+ hints.ai_next = NULL;
+ hints.ai_addr = NULL;
+
+ return ecore_con_info_get(svr, done_cb, data, &hints);
+}
+
+EAPI int
+ecore_con_info_get(Ecore_Con_Server *svr,
+ Ecore_Con_Info_Cb done_cb,
+ void *data,
+ struct addrinfo *hints)
+{
+ Ecore_Con_CAres *cares;
+ int ai_family = AF_UNSPEC;
+
+ cares = calloc(1, sizeof (Ecore_Con_CAres));
+ if (!cares) return 0;
+
+ cares->svr = svr;
+ cares->done_cb = done_cb;
+ cares->data = data;
+
+ if (hints)
+ {
+ ai_family = hints->ai_family;
+ memcpy(&cares->hints, hints, sizeof (struct addrinfo));
+ }
+
+ if (inet_pton(AF_INET, svr->name, &cares->addr.v4) == 1)
+ {
+ cares->byaddr = EINA_TRUE;
+ ares_gethostbyaddr(info_channel, &cares->addr.v4, sizeof (cares->addr.v4), AF_INET, (ares_host_callback) _ecore_con_info_ares_host_cb, cares);
+ }
+ else if (inet_pton(AF_INET6, svr->name, &cares->addr.v6) == 1)
+ {
+ cares->byaddr = EINA_TRUE;
+ ares_gethostbyaddr(info_channel, &cares->addr.v6, sizeof (cares->addr.v6), AF_INET6, (ares_host_callback) _ecore_con_info_ares_host_cb, cares);
+ }
+ else
+ {
+ cares->byaddr = EINA_FALSE;
+ ares_gethostbyname(info_channel, svr->name, ai_family, (ares_host_callback) _ecore_con_info_ares_host_cb, cares);
+ }
+
+ _ecore_con_info_cares_clean();
+
+ return 1;
+}
+
+static int
+_ecore_con_info_fds_search(const Ecore_Con_FD *fd1, const Ecore_Con_FD *fd2)
+{
+ return fd1->fd - fd2->fd;
+}
+
+static Eina_Bool
+_ecore_con_info_fds_lookup(int fd)
+{
+ Ecore_Con_FD fdl;
+ Ecore_Con_FD *search;
+
+ fdl.fd = fd;
+
+ search = eina_list_search_unsorted(info_fds, (Eina_Compare_Cb) _ecore_con_info_fds_search, &fdl);
+
+ if (search)
+ {
+ search->active = active;
+ return EINA_TRUE;
+ }
+ return EINA_FALSE;
+}
+
+static void
+_ecore_con_info_cares_clean(void)
+{
+ fd_set readers, writers;
+ Eina_List *l, *l_next;
+ Ecore_Con_FD *ecf;
+ int nfds;
+ int i;
+
+ FD_ZERO(&readers);
+ FD_ZERO(&writers);
+ nfds = ares_fds(info_channel, &readers, &writers);
+
+ active++;
+ for (i = 0; i < nfds; ++i)
+ {
+ int flags = 0;
+
+ if (FD_ISSET(i, &readers)) flags |= ECORE_FD_READ;
+ if (FD_ISSET(i, &writers)) flags |= ECORE_FD_WRITE;
+
+ if (flags)
+ {
+ if (!_ecore_con_info_fds_lookup(i))
+ {
+ ecf = malloc(sizeof (Ecore_Con_FD));
+ if (ecf)
+ {
+ ecf->fd = i;
+ ecf->active = active;
+ ecf->handler = ecore_main_fd_handler_add(i, ECORE_FD_WRITE | ECORE_FD_READ,
+ _ecore_con_info_cares_fd_cb,
+ NULL, NULL, NULL);
+ info_fds = eina_list_append(info_fds, ecf);
+ }
+ }
+ }
+ }
+
+ info_readers = readers;
+ info_writers = writers;
+
+ EINA_LIST_FOREACH_SAFE(info_fds, l, l_next, ecf)
+ {
+ if (ecf->active != active)
+ {
+ ecore_main_fd_handler_del(ecf->handler);
+ free(ecf);
+ info_fds = eina_list_remove_list(info_fds, l);
+ }
+ }
+
+ if (!info_fds)
+ {
+ if (tm) ecore_timer_del(tm);
+ tm = NULL;
+ }
+ else
+ {
+ struct timeval tv;
+
+ ares_timeout(info_channel, NULL, &tv);
+
+ if (tm)
+ ecore_timer_delay(tm, tv.tv_sec);
+ else
+ tm = ecore_timer_add((double) tv.tv_sec, _ecore_con_info_cares_timeout_cb, NULL);
+ }
+}
+
+static int
+_ecore_con_info_cares_timeout_cb(void *data)
+{
+ ares_process(info_channel, &info_readers, &info_writers);
+ _ecore_con_info_cares_clean();
+
+ return 1;
+}
+
+static int
+_ecore_con_info_cares_fd_cb(void *data, Ecore_Fd_Handler *fd_handler)
+{
+ ares_process(info_channel, &info_readers, &info_writers);
+ _ecore_con_info_cares_clean();
+
+ return 1;
+}
+
+static void
+_ecore_con_info_ares_host_cb(Ecore_Con_CAres *arg, int status, int timeouts, struct hostent *hostent)
+{
+ struct sockaddr *addr;
+ int addrlen;
+ int length = 0;
+
+ /* Found something ? */
+ switch (status)
+ {
+ case ARES_SUCCESS:
+ if (hostent->h_addr_list[0] == NULL)
+ {
+ fprintf(stderr, "No IP found\n");
+ goto on_error;
+ }
+
+ switch (hostent->h_addrtype)
+ {
+ case AF_INET:
+ {
+ struct sockaddr_in *addri;
+
+ addrlen = sizeof (struct sockaddr_in);
+ addri = malloc(addrlen);
+
+ if (!addri)
+ {
+ fprintf(stderr, "Not enough memory\n");
+ goto on_error;
+ }
+
+ addri->sin_family = AF_INET;
+ addri->sin_port = htons(arg->svr->port);
+
+ memcpy(&addri->sin_addr.s_addr, arg->byaddr ? &arg->addr.v4 : (struct in_addr*)hostent->h_addr_list[0], sizeof (struct in_addr));
+
+ addr = (struct sockaddr*) addri;
+ break;
+ }
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *addri6;
+
+ addrlen = sizeof (struct sockaddr_in6);
+ addri6 = malloc(addrlen);
+
+ if (!addri6)
+ {
+ fprintf(stderr, "Not enough memory\n");
+ goto on_error;
+ }
+
+ addri6->sin6_family = AF_INET6;
+ addri6->sin6_port = htons(arg->svr->port);
+ addri6->sin6_flowinfo = 0;
+ addri6->sin6_scope_id = 0;
+
+ memcpy(&addri6->sin6_addr.s6_addr, arg->byaddr ? &arg->addr.v6 : (struct in6_addr*)hostent->h_addr_list[0], sizeof (struct in6_addr));
+
+ addr = (struct sockaddr*) addri6;
+ break;
+ }
+ default:
+ fprintf(stderr, "Unknown addrtype %i\n", hostent->h_addrtype);
+ goto on_error;
+ }
+
+ if (hostent->h_name)
+ length = strlen(hostent->h_name) + 1;
+
+ arg->result = malloc(sizeof (Ecore_Con_Info) + length);
+ if (!arg->result)
+ {
+ fprintf(stderr, "Not enough memory\n");
+ free(addr);
+ goto on_error;
+ }
+
+ /* FIXME: What to do when hint is not set ? */
+ arg->result->info.ai_flags = arg->hints.ai_flags;
+ arg->result->info.ai_socktype = arg->hints.ai_socktype;
+ arg->result->info.ai_protocol = arg->hints.ai_protocol;
+
+ arg->result->info.ai_family = hostent->h_addrtype;
+ arg->result->info.ai_addrlen = addrlen;
+ arg->result->info.ai_addr = addr;
+ arg->result->info.ai_canonname = (char*) (arg->result + 1);
+
+ strcpy(arg->result->info.ai_canonname, hostent->h_name);
+
+ arg->result->info.ai_next = NULL;
+
+ ares_getnameinfo(info_channel, addr, addrlen,
+ ARES_NI_NUMERICSERV | ARES_NI_NUMERICHOST | ARES_NI_LOOKUPSERVICE | ARES_NI_LOOKUPHOST,
+ (ares_nameinfo_callback) _ecore_con_info_ares_nameinfo, arg);
+ break;
+ case ARES_ENOTIMP: /* unknown family */
+ case ARES_EBADNAME: /* not a valid internet address */
+ case ARES_ENOTFOUND: /* address notfound */
+ case ARES_ENOMEM: /* not enough memory */
+ case ARES_EDESTRUCTION: /* request canceled, shuting down */
+ goto on_error;
+ default:
+ fprintf(stderr, "Unknown status returned by c-ares: %i assuming error\n", status);
+ goto on_error;
+ }
+
+ return ;
+
+ on_error:
+ arg->done_cb(arg->data, NULL);
+ free(arg);
+}
+
+static void
+_ecore_con_info_ares_nameinfo(Ecore_Con_CAres *arg, int status, int timeouts, char *node, char *service)
+{
+ switch (status)
+ {
+ case ARES_SUCCESS:
+ if (node) strcpy(arg->result->ip, node);
+ else *arg->result->ip = '\0';
+ if (service) strcpy(arg->result->service, service);
+ else *arg->result->service = '\0';
+
+ arg->done_cb(arg->data, arg->result);
+ break;
+ case ARES_ENOTIMP:
+ case ARES_ENOTFOUND:
+ case ARES_ENOMEM:
+ case ARES_EDESTRUCTION:
+ case ARES_EBADFLAGS:
+ arg->done_cb(arg->data, NULL);
+ break;
+ }
+
+ free(arg->result->info.ai_addr);
+ free(arg->result);
+ free(arg);
+}
projects / profile / ivi / ecore.git / commitdiff