/*
* Establish a TCP connection to the specified port on the specified host.
*/
conn_t *
fetch_connect(struct url *url, int af, int verbose)
{
conn_t *conn;
char pbuf[10];
const char *bindaddr;
struct addrinfo hints, *res, *res0;
int sd, error;
if (verbose)
fetch_info("looking up %s", url->host);
/* look up host name and set up socket address structure */
snprintf(pbuf, sizeof(pbuf), "%d", url->port);
memset(&hints, 0, sizeof(hints));
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
if ((error = getaddrinfo(url->host, pbuf, &hints, &res0)) != 0) {
netdb_seterr(error);
return (NULL);
}
bindaddr = getenv("FETCH_BIND_ADDRESS");
if (verbose)
fetch_info("connecting to %s:%d", url->host, url->port);
/* try to connect */
for (sd = -1, res = res0; res; sd = -1, res = res->ai_next) {
if ((sd = socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) == -1)
continue;
if (bindaddr != NULL && *bindaddr != '\0' &&
fetch_bind(sd, res->ai_family, bindaddr) != 0) {
fetch_info("failed to bind to '%s'", bindaddr);
close(sd);
continue;
}
if (connect(sd, res->ai_addr, res->ai_addrlen) == 0)
break;
close(sd);
}
freeaddrinfo(res0);
if (sd == -1) {
fetch_syserr();
return (NULL);
}
if ((conn = fetch_reopen(sd)) == NULL) {
fetch_syserr();
close(sd);
return (NULL);
}
conn->cache_url = fetchCopyURL(url);
conn->cache_af = af;
return (conn);
}
void InvalLoader::fetch_cluster_infos()
{
log_info("start loading groupnames.");
//collect all group names
const char* p_cluster_list = TBSYS_CONFIG.getString(INVALSERVER_SECTION, "cluster_list", NULL);
if (p_cluster_list != NULL)
{
//get the cluster name list from the config file
vector<std::string> cluster_name_list;
parse_cluster_list(p_cluster_list, cluster_name_list);
for (size_t i = 0; i < cluster_name_list.size(); ++i)
{
//fetch info for cluster
fetch_info(cluster_name_list[i]);
}
}
}
/*
* Get authentication data for a URL from .netrc
*/
int
fetch_netrc_auth(struct url *url)
{
char fn[PATH_MAX];
const char *word;
char *p;
FILE *f;
if ((p = getenv("NETRC")) != NULL) {
if (snprintf(fn, sizeof(fn), "%s", p) >= (int)sizeof(fn)) {
fetch_info("$NETRC specifies a file name "
"longer than PATH_MAX");
return (-1);
}
} else {
if ((p = getenv("HOME")) != NULL) {
struct passwd *pwd;
if ((pwd = getpwuid(getuid())) == NULL ||
(p = pwd->pw_dir) == NULL)
return (-1);
}
if (snprintf(fn, sizeof(fn), "%s/.netrc", p) >= (int)sizeof(fn))
return (-1);
}
if ((f = fopen(fn, "r")) == NULL)
return (-1);
while ((word = fetch_read_word(f)) != NULL) {
if (strcmp(word, "default") == 0)
break;
if (strcmp(word, "machine") == 0 &&
(word = fetch_read_word(f)) != NULL &&
strcasecmp(word, url->host) == 0) {
break;
}
}
if (word == NULL)
goto ferr;
while ((word = fetch_read_word(f)) != NULL) {
if (strcmp(word, "login") == 0) {
if ((word = fetch_read_word(f)) == NULL)
goto ferr;
if (snprintf(url->user, sizeof(url->user),
"%s", word) > (int)sizeof(url->user)) {
fetch_info("login name in .netrc is too long");
url->user[0] = '\0';
}
} else if (strcmp(word, "password") == 0) {
if ((word = fetch_read_word(f)) == NULL)
goto ferr;
if (snprintf(url->pwd, sizeof(url->pwd),
"%s", word) > (int)sizeof(url->pwd)) {
fetch_info("password in .netrc is too long");
url->pwd[0] = '\0';
}
} else if (strcmp(word, "account") == 0) {
if ((word = fetch_read_word(f)) == NULL)
goto ferr;
/* XXX not supported! */
} else {
break;
}
}
fclose(f);
return (0);
ferr:
fclose(f);
return (-1);
}
/*
* Transfer file
*/
static fetchIO *
ftp_transfer(conn_t *conn, const char *oper, const char *file, const char *op_arg,
int mode, off_t offset, const char *flags)
{
union anonymous {
struct sockaddr_storage ss;
struct sockaddr sa;
struct sockaddr_in6 sin6;
struct sockaddr_in sin4;
} u;
const char *bindaddr;
const char *filename;
int filenamelen, type;
int pasv, verbose;
int e, sd = -1;
socklen_t l;
char *s;
fetchIO *df;
/* check flags */
pasv = !CHECK_FLAG('a');
verbose = CHECK_FLAG('v');
/* passive mode */
if (!pasv)
pasv = ((s = getenv("FTP_PASSIVE_MODE")) != NULL &&
strncasecmp(s, "no", 2) != 0);
/* isolate filename */
filename = ftp_filename(file, &filenamelen, &type, op_arg != NULL);
/* set transfer mode and data type */
if ((e = ftp_mode_type(conn, 0, type)) != FTP_OK)
goto ouch;
/* find our own address, bind, and listen */
l = sizeof(u.ss);
if (getsockname(conn->sd, &u.sa, &l) == -1)
goto sysouch;
if (u.ss.ss_family == AF_INET6)
unmappedaddr(&u.sin6, &l);
retry_mode:
/* open data socket */
if ((sd = socket(u.ss.ss_family, SOCK_STREAM, IPPROTO_TCP)) == -1) {
fetch_syserr();
return (NULL);
}
if (pasv) {
unsigned char addr[64];
char *ln, *p;
unsigned int i;
int port;
/* send PASV command */
if (verbose)
fetch_info("setting passive mode");
switch (u.ss.ss_family) {
case AF_INET:
if ((e = ftp_cmd(conn, "PASV\r\n")) != FTP_PASSIVE_MODE)
goto ouch;
break;
case AF_INET6:
if ((e = ftp_cmd(conn, "EPSV\r\n")) != FTP_EPASSIVE_MODE) {
if (e == -1)
goto ouch;
if ((e = ftp_cmd(conn, "LPSV\r\n")) !=
FTP_LPASSIVE_MODE)
goto ouch;
}
break;
default:
e = FTP_PROTOCOL_ERROR; /* XXX: error code should be prepared */
goto ouch;
}
/*
* Find address and port number. The reply to the PASV command
* is IMHO the one and only weak point in the FTP protocol.
*/
ln = conn->buf;
switch (e) {
case FTP_PASSIVE_MODE:
case FTP_LPASSIVE_MODE:
for (p = ln + 3; *p && !isdigit((unsigned char)*p); p++)
/* nothing */ ;
if (!*p) {
e = FTP_PROTOCOL_ERROR;
goto ouch;
}
l = (e == FTP_PASSIVE_MODE ? 6 : 21);
for (i = 0; *p && i < l; i++, p++)
addr[i] = strtol(p, &p, 10);
if (i < l) {
e = FTP_PROTOCOL_ERROR;
goto ouch;
}
break;
case FTP_EPASSIVE_MODE:
for (p = ln + 3; *p && *p != '('; p++)
/* nothing */ ;
if (!*p) {
e = FTP_PROTOCOL_ERROR;
goto ouch;
}
++p;
if (sscanf(p, "%c%c%c%d%c", &addr[0], &addr[1], &addr[2],
&port, &addr[3]) != 5 ||
addr[0] != addr[1] ||
addr[0] != addr[2] || addr[0] != addr[3]) {
e = FTP_PROTOCOL_ERROR;
goto ouch;
}
break;
case FTP_SYNTAX_ERROR:
if (verbose)
fetch_info("passive mode failed");
/* Close socket and retry with passive mode. */
pasv = 0;
close(sd);
sd = -1;
goto retry_mode;
}
/* seek to required offset */
if (offset)
if (ftp_cmd(conn, "REST %lu\r\n", (unsigned long)offset) != FTP_FILE_OK)
goto sysouch;
/* construct sockaddr for data socket */
l = sizeof(u.ss);
if (getpeername(conn->sd, &u.sa, &l) == -1)
goto sysouch;
if (u.ss.ss_family == AF_INET6)
unmappedaddr(&u.sin6, &l);
switch (u.ss.ss_family) {
case AF_INET6:
if (e == FTP_EPASSIVE_MODE)
u.sin6.sin6_port = htons(port);
else {
memcpy(&u.sin6.sin6_addr, addr + 2, 16);
memcpy(&u.sin6.sin6_port, addr + 19, 2);
}
break;
case AF_INET:
if (e == FTP_EPASSIVE_MODE)
u.sin4.sin_port = htons(port);
else {
memcpy(&u.sin4.sin_addr, addr, 4);
memcpy(&u.sin4.sin_port, addr + 4, 2);
}
break;
default:
e = FTP_PROTOCOL_ERROR; /* XXX: error code should be prepared */
break;
}
/* connect to data port */
if (verbose)
fetch_info("opening data connection");
bindaddr = getenv("FETCH_BIND_ADDRESS");
if (bindaddr != NULL && *bindaddr != '\0' &&
fetch_bind(sd, u.ss.ss_family, bindaddr) != 0)
goto sysouch;
if (connect(sd, &u.sa, l) == -1)
goto sysouch;
/* make the server initiate the transfer */
if (verbose)
fetch_info("initiating transfer");
if (op_arg)
e = ftp_cmd(conn, "%s%s%s\r\n", oper, *op_arg ? " " : "", op_arg);
else
e = ftp_cmd(conn, "%s %.*s\r\n", oper,
(int)filenamelen, filename);
if (e != FTP_CONNECTION_ALREADY_OPEN && e != FTP_OPEN_DATA_CONNECTION)
goto ouch;
} else {
uint32_t a;
uint16_t p;
#if defined(IPV6_PORTRANGE) || defined(IP_PORTRANGE)
int arg;
int low = CHECK_FLAG('l');
#endif
int d;
char hname[INET6_ADDRSTRLEN];
switch (u.ss.ss_family) {
case AF_INET6:
u.sin6.sin6_port = 0;
#ifdef IPV6_PORTRANGE
arg = low ? IPV6_PORTRANGE_DEFAULT : IPV6_PORTRANGE_HIGH;
if (setsockopt(sd, IPPROTO_IPV6, IPV6_PORTRANGE,
(char *)&arg, sizeof(arg)) == -1)
goto sysouch;
#endif
break;
case AF_INET:
u.sin4.sin_port = 0;
#ifdef IP_PORTRANGE
arg = low ? IP_PORTRANGE_DEFAULT : IP_PORTRANGE_HIGH;
if (setsockopt(sd, IPPROTO_IP, IP_PORTRANGE,
(char *)&arg, sizeof(arg)) == -1)
goto sysouch;
#endif
break;
}
if (verbose)
fetch_info("binding data socket");
if (bind(sd, &u.sa, l) == -1)
goto sysouch;
if (listen(sd, 1) == -1)
goto sysouch;
/* find what port we're on and tell the server */
if (getsockname(sd, &u.sa, &l) == -1)
goto sysouch;
switch (u.ss.ss_family) {
case AF_INET:
a = ntohl(u.sin4.sin_addr.s_addr);
p = ntohs(u.sin4.sin_port);
e = ftp_cmd(conn, "PORT %d,%d,%d,%d,%d,%d\r\n",
(a >> 24) & 0xff, (a >> 16) & 0xff,
(a >> 8) & 0xff, a & 0xff,
(p >> 8) & 0xff, p & 0xff);
break;
case AF_INET6:
e = -1;
u.sin6.sin6_scope_id = 0;
if (getnameinfo(&u.sa, l,
hname, sizeof(hname),
NULL, 0, NI_NUMERICHOST) == 0) {
e = ftp_cmd(conn, "EPRT |%d|%s|%d|\r\n", 2, hname,
htons(u.sin6.sin6_port));
if (e == -1)
goto ouch;
}
if (e != FTP_OK) {
unsigned char *ap = (void *)&u.sin6.sin6_addr.s6_addr;
uint16_t port = ntohs(u.sin6.sin6_port);
e = ftp_cmd(conn,
"LPRT %d,%d,%u,%u,%u,%u,%u,%u,%u,%u,"
"%u,%u,%u,%u,%u,%u,%u,%u,%d,%d,%d\r\n",
6, 16,
(unsigned)ap[0], (unsigned)ap[1],
(unsigned)ap[2], (unsigned)ap[3],
(unsigned)ap[4], (unsigned)ap[5],
(unsigned)ap[6], (unsigned)ap[7],
(unsigned)ap[8], (unsigned)ap[9],
(unsigned)ap[10], (unsigned)ap[11],
(unsigned)ap[12], (unsigned)ap[13],
(unsigned)ap[14], (unsigned)ap[15],
2, port >> 8, port & 0xff);
}
break;
default:
e = FTP_PROTOCOL_ERROR; /* XXX: error code should be prepared */
goto ouch;
}
if (e != FTP_OK)
goto ouch;
/* seek to required offset */
if (offset)
if (ftp_cmd(conn, "REST %llu\r\n", (unsigned long long)offset) != FTP_FILE_OK)
goto sysouch;
/* make the server initiate the transfer */
if (verbose)
fetch_info("initiating transfer");
if (op_arg)
e = ftp_cmd(conn, "%s%s%s\r\n", oper, *op_arg ? " " : "", op_arg);
else
e = ftp_cmd(conn, "%s %.*s\r\n", oper,
(int)filenamelen, filename);
if (e != FTP_CONNECTION_ALREADY_OPEN && e != FTP_OPEN_DATA_CONNECTION)
goto ouch;
/* accept the incoming connection and go to town */
if ((d = accept(sd, NULL, NULL)) == -1)
goto sysouch;
close(sd);
sd = d;
}
