+++ /dev/null
-/*
- * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
- */
-
-/*
- * Simple dns lookup
- *
- * http://www.faqs.org/rfcs/rfc1035.html
- * man resolv.conf
- *
- * And a sneakpeek at ares, ftp://athena-dist.mit.edu/pub/ATHENA/ares/
- */
-/*
- * TODO
- * * Check env LOCALDOMAIN to override search
- * * Check env RES_OPTIONS to override options
- *
- * * Read /etc/host.conf
- * * host.conf env
- * RESOLV_HOST_CONF, RESOLV_SERV_ORDER
- * * Check /etc/hosts
- *
- * * Caching
- * We should store all names returned when CNAME, might have different ttl.
- * Check against search and hostname when querying cache?
- * * Remember all querys and delete them on shutdown
- *
- * * Need more buffer overflow checks.
- */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <errno.h>
-#ifdef __OpenBSD__
-# include <sys/types.h>
-#endif
-
-#ifndef _WIN32
-# include <sys/socket.h>
-# include <arpa/inet.h>
-# include <arpa/nameser.h>
-#include <netdb.h>
-#else
-# include <ws2tcpip.h>
-#endif
-
-#ifdef HAVE_NETINET_IN_H
-# include <netinet/in.h>
-#endif
-
-#include "Ecore.h"
-#include "ecore_private.h"
-#include "ecore_con_private.h"
-
-typedef struct _CB_Data CB_Data;
-
-struct _CB_Data
-{
- EINA_INLIST;
- void (*cb_done) (void *data, struct hostent *hostent);
- void *data;
- Ecore_Fd_Handler *fdh;
- pid_t pid;
- Ecore_Event_Handler *handler;
- int fd2;
-};
-
-static void _ecore_con_dns_readdata(CB_Data *cbdata);
-static void _ecore_con_dns_slave_free(CB_Data *cbdata);
-static int _ecore_con_dns_data_handler(void *data, Ecore_Fd_Handler *fd_handler);
-static int _ecore_con_dns_exit_handler(void *data, int type __UNUSED__, void *event);
-static Eina_Bool _ecore_con_write_safe(int fd, void *data, size_t length);
-
-static int dns_init = 0;
-static CB_Data *dns_slaves = NULL;
-
-int
-ecore_con_dns_init(void)
-{
- dns_init++;
- return dns_init;
-}
-
-int
-ecore_con_dns_shutdown(void)
-{
- dns_init--;
- if (dns_init == 0)
- {
- while (dns_slaves) _ecore_con_dns_slave_free(dns_slaves);
- }
- return dns_init;
-}
-
-int
-ecore_con_dns_lookup(const char *name,
- void (*done_cb) (void *data, struct hostent *hostent),
- void *data)
-{
- CB_Data *cbdata;
- int fd[2];
-
- if (pipe(fd) < 0) return 0;
- cbdata = calloc(1, sizeof(CB_Data));
- if (!cbdata)
- {
- close(fd[0]);
- close(fd[1]);
- return 0;
- }
- cbdata->cb_done = done_cb;
- cbdata->data = data;
- cbdata->fd2 = fd[1];
- if (!(cbdata->fdh = ecore_main_fd_handler_add(fd[0], ECORE_FD_READ,
- _ecore_con_dns_data_handler,
- cbdata,
- NULL, NULL)))
- {
- free(cbdata);
- close(fd[0]);
- close(fd[1]);
- return 0;
- }
-
- if ((cbdata->pid = fork()) == 0)
- {
- struct hostent *he;
-
- /* CHILD */
- he = gethostbyname(name);
- if (he)
- {
- struct in_addr addr;
-
- memcpy((struct in_addr *)&addr, he->h_addr,
- sizeof(struct in_addr));
- _ecore_con_write_safe(fd[1], &(addr.s_addr), sizeof(in_addr_t));
- }
- else
- {
- _ecore_con_write_safe(fd[1], "", 1);
- }
- close(fd[1]);
-# ifdef __USE_ISOC99
- _Exit(0);
-# else
- _exit(0);
-# endif
- }
- /* PARENT */
- cbdata->handler = ecore_event_handler_add(ECORE_EXE_EVENT_DEL, _ecore_con_dns_exit_handler, cbdata);
- close(fd[1]);
- if (!cbdata->handler)
- {
- ecore_main_fd_handler_del(cbdata->fdh);
- free(cbdata);
- close(fd[0]);
- return 0;
- }
- dns_slaves = (CB_Data *) eina_inlist_append(EINA_INLIST_GET(dns_slaves), EINA_INLIST_GET(cbdata));
- return 1;
-}
-
-static void
-_ecore_con_dns_readdata(CB_Data *cbdata)
-{
- struct hostent he;
- struct in_addr addr;
- char *addr2;
- ssize_t size;
-
- size = read(ecore_main_fd_handler_fd_get(cbdata->fdh), &(addr.s_addr),
- sizeof(in_addr_t));
- if (size == sizeof(in_addr_t))
- {
- addr2 = (char *)&addr;
- he.h_addrtype = AF_INET;
- he.h_length = sizeof(in_addr_t);
- he.h_addr_list = &addr2;
- cbdata->cb_done(cbdata->data, &he);
- }
- else
- cbdata->cb_done(cbdata->data, NULL);
- cbdata->cb_done = NULL;
-}
-
-static void
-_ecore_con_dns_slave_free(CB_Data *cbdata)
-{
- dns_slaves = (CB_Data *) eina_inlist_remove(EINA_INLIST_GET(dns_slaves), EINA_INLIST_GET(cbdata));
- close(ecore_main_fd_handler_fd_get(cbdata->fdh));
- ecore_main_fd_handler_del(cbdata->fdh);
- ecore_event_handler_del(cbdata->handler);
- free(cbdata);
-}
-
-static int
-_ecore_con_dns_data_handler(void *data, Ecore_Fd_Handler *fd_handler)
-{
- CB_Data *cbdata;
-
- cbdata = data;
- if (cbdata->cb_done)
- {
- if (ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_READ))
- _ecore_con_dns_readdata(cbdata);
- else
- {
- cbdata->cb_done(cbdata->data, NULL);
- cbdata->cb_done = NULL;
- }
- }
- _ecore_con_dns_slave_free(cbdata);
- return 0;
-}
-
-static int
-_ecore_con_dns_exit_handler(void *data, int type __UNUSED__, void *event)
-{
- CB_Data *cbdata;
- Ecore_Exe_Event_Del *ev;
-
- ev = event;
- cbdata = data;
- if (cbdata->pid != ev->pid) return 1;
- return 0;
- _ecore_con_dns_slave_free(cbdata);
- return 0;
-}
-
-static Eina_Bool
-_ecore_con_write_safe(int fd, void *data, size_t length)
-{
- char *buf = data;
- ssize_t todo = (ssize_t)length;
-
- while (todo > 0)
- {
- ssize_t r = write(fd, buf, todo);
- if (r > 0)
- {
- todo -= r;
- buf += r;
- }
- else if ((r < 0) && (errno == EINTR))
- continue;
- else
- {
- ERR("could not write to fd %d: %s", fd, strerror(errno));
- return EINA_FALSE;
- }
- }
- return EINA_TRUE;
-}
projects / profile / ivi / ecore.git / commitdiff