#include "includes.h"
-/* the following 3 client_*() functions are nasty ways of allowing
- some generic functions to get info that really should be hidden in
- particular modules */
-static int client_fd = -1;
-/* What to print out on a client disconnect error. */
-static char client_ip_string[INET6_ADDRSTRLEN];
-
/****************************************************************************
Return true if a string could be an IPv4 address.
****************************************************************************/
int ret = -1;
#if defined(HAVE_IPV6)
- struct in6_addr dest6;
+ if (strchr_m(str, ':')) {
+ char addr[INET6_ADDRSTRLEN];
+ struct in6_addr dest6;
+ const char *sp = str;
+ char *p = strchr_m(str, '%');
- ret = inet_pton(AF_INET6, str, &dest6);
- if (ret > 0) {
- return true;
+ /*
+ * Cope with link-local.
+ * This is IP:v6:addr%ifname.
+ */
+
+ if (p && (p > str) && (if_nametoindex(p+1) != 0)) {
+ strlcpy(addr, str,
+ MIN(PTR_DIFF(p,str)+1,
+ sizeof(addr)));
+ sp = addr;
+ }
+ ret = inet_pton(AF_INET6, sp, &dest6);
+ if (ret > 0) {
+ return true;
+ }
}
#endif
return is_ipaddress_v4(str);
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = flags;
+ /* Linux man page on getaddinfo() says port will be
+ uninitialized when service string in NULL */
+
ret = getaddrinfo(str, NULL,
&hints,
ppres);
+
if (ret) {
- DEBUG(3,("interpret_string_addr_interal: getaddrinfo failed "
+ DEBUG(3,("interpret_string_addr_internal: getaddrinfo failed "
"for name %s [%s]\n",
str,
gai_strerror(ret) ));
A convenient addition to interpret_addr().
******************************************************************/
-struct in_addr *interpret_addr2(const char *str)
+struct in_addr *interpret_addr2(struct in_addr *ip, const char *str)
{
- static struct in_addr ret;
uint32 a = interpret_addr(str);
- ret.s_addr = a;
- return(&ret);
+ ip->s_addr = a;
+ return ip;
}
/*******************************************************************
const char *str,
int flags)
{
+ char addr[INET6_ADDRSTRLEN];
struct addrinfo *res = NULL;
+#if defined(HAVE_IPV6)
+ unsigned int scope_id = 0;
+
+ if (strchr_m(str, ':')) {
+ char *p = strchr_m(str, '%');
+
+ /*
+ * Cope with link-local.
+ * This is IP:v6:addr%ifname.
+ */
- zero_addr(pss, AF_INET);
+ if (p && (p > str) && ((scope_id = if_nametoindex(p+1)) != 0)) {
+ strlcpy(addr, str,
+ MIN(PTR_DIFF(p,str)+1,
+ sizeof(addr)));
+ str = addr;
+ }
+ }
+#endif
+
+ zero_addr(pss);
if (!interpret_string_addr_internal(&res, str, flags|AI_ADDRCONFIG)) {
return false;
}
/* Copy the first sockaddr. */
memcpy(pss, res->ai_addr, res->ai_addrlen);
+
+#if defined(HAVE_IPV6)
+ if (pss->ss_family == AF_INET6 && scope_id) {
+ struct sockaddr_in6 *ps6 = (struct sockaddr_in6 *)pss;
+ if (IN6_IS_ADDR_LINKLOCAL(&ps6->sin6_addr) &&
+ ps6->sin6_scope_id == 0) {
+ ps6->sin6_scope_id = scope_id;
+ }
+ }
+#endif
+
freeaddrinfo(res);
return true;
}
void zero_ip_v4(struct in_addr *ip)
{
- static bool init;
- static struct in_addr ipzero;
-
- if (!init) {
- ipzero = *interpret_addr2("0.0.0.0");
- init = true;
- }
-
- *ip = ipzero;
+ memset(ip, '\0', sizeof(struct in_addr));
}
/*******************************************************************
- Set an address to INADDR_ANY, or IN6ADDR_ANY.
+ Set an address to INADDR_ANY.
******************************************************************/
-void zero_addr(struct sockaddr_storage *pss, int family)
+void zero_addr(struct sockaddr_storage *pss)
{
memset(pss, '\0', sizeof(*pss));
/* Ensure we're at least a valid sockaddr-storage. */
- pss->ss_family = family;
+ pss->ss_family = AF_INET;
}
/*******************************************************************
Convert an IPv6 struct in_addr to a struct sockaddr_storage.
********************************************************************/
-void in6_addr_to_sockaddr_storage(struct sockaddr_storage *ss,
+ void in6_addr_to_sockaddr_storage(struct sockaddr_storage *ss,
struct in6_addr ip)
{
struct sockaddr_in6 *sa = (struct sockaddr_in6 *)ss;
return false;
}
+/****************************************************************************
+ Get a port number in host byte order from a sockaddr_storage.
+****************************************************************************/
+
+uint16_t get_sockaddr_port(const struct sockaddr_storage *pss)
+{
+ uint16_t port = 0;
+
+ if (pss->ss_family != AF_INET) {
+#if defined(HAVE_IPV6)
+ /* IPv6 */
+ const struct sockaddr_in6 *sa6 =
+ (const struct sockaddr_in6 *)pss;
+ port = ntohs(sa6->sin6_port);
+#endif
+ } else {
+ const struct sockaddr_in *sa =
+ (const struct sockaddr_in *)pss;
+ port = ntohs(sa->sin_port);
+ }
+ return port;
+}
+
/****************************************************************************
Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
****************************************************************************/
-char *print_sockaddr_len(char *dest,
+static char *print_sockaddr_len(char *dest,
size_t destlen,
const struct sockaddr_storage *psa,
socklen_t psalen)
if (destlen > 0) {
dest[0] = '\0';
}
- (void)getnameinfo((const struct sockaddr *)psa,
+ (void)sys_getnameinfo((const struct sockaddr *)psa,
psalen,
dest, destlen,
NULL, 0,
size_t destlen,
const struct sockaddr_storage *psa)
{
- return print_sockaddr_len(dest, destlen, psa, sizeof(*psa));
+ return print_sockaddr_len(dest, destlen, psa,
+ sizeof(struct sockaddr_storage));
}
/****************************************************************************
char *dest = NULL;
int ret;
- ret = getnameinfo((const struct sockaddr *)pss,
+ /* Linux getnameinfo() man pages says port is unitialized if
+ service name is NULL. */
+
+ ret = sys_getnameinfo((const struct sockaddr *)pss,
sizeof(struct sockaddr_storage),
addr, sizeof(addr),
NULL, 0,
NI_NUMERICHOST);
- if (ret) {
+ if (ret != 0) {
return NULL;
}
+
if (pss->ss_family != AF_INET) {
#if defined(HAVE_IPV6)
- /* IPv6 */
- const struct sockaddr_in6 *sa6 =
- (const struct sockaddr_in6 *)pss;
- uint16_t port = ntohs(sa6->sin6_port);
-
- if (port) {
- dest = talloc_asprintf(ctx,
- "[%s]:%d",
- addr,
- (unsigned int)port);
- } else {
- dest = talloc_asprintf(ctx,
- "[%s]",
- addr);
- }
+ dest = talloc_asprintf(ctx, "[%s]", addr);
#else
return NULL;
#endif
} else {
- const struct sockaddr_in *sa =
- (const struct sockaddr_in *)pss;
- uint16_t port = ntohs(sa->sin_port);
-
- if (port) {
- dest = talloc_asprintf(ctx,
- "%s:%d",
- addr,
- (unsigned int)port);
- } else {
- dest = talloc_asprintf(ctx,
- "%s",
- addr);
- }
+ dest = talloc_asprintf(ctx, "%s", addr);
}
+
return dest;
}
/****************************************************************************
- Set the global client_fd variable.
-****************************************************************************/
-
-void client_setfd(int fd)
-{
- client_fd = fd;
- safe_strcpy(client_ip_string,
- get_peer_addr(client_fd),
- sizeof(client_ip_string)-1);
-}
-
-/****************************************************************************
- Return a static string of an IP address (IPv4 or IPv6).
+ Return the string of an IP address (IPv4 or IPv6).
****************************************************************************/
-static const char *get_socket_addr(int fd)
+static const char *get_socket_addr(int fd, char *addr_buf, size_t addr_len)
{
struct sockaddr_storage sa;
socklen_t length = sizeof(sa);
- static char addr_buf[INET6_ADDRSTRLEN];
/* Ok, returning a hard coded IPv4 address
* is bogus, but it's just as bogus as a
* zero IPv6 address. No good choice here.
*/
- safe_strcpy(addr_buf, "0.0.0.0", sizeof(addr_buf)-1);
+ strlcpy(addr_buf, "0.0.0.0", addr_len);
if (fd == -1) {
return addr_buf;
return addr_buf;
}
- return print_sockaddr_len(addr_buf, sizeof(addr_buf), &sa, length);
+ return print_sockaddr_len(addr_buf, addr_len, &sa, length);
}
+#if 0
+/* Not currently used. JRA. */
/****************************************************************************
Return the port number we've bound to on a socket.
****************************************************************************/
}
return -1;
}
+#endif
-const char *client_name(void)
+void set_sockaddr_port(struct sockaddr_storage *psa, uint16 port)
{
- return get_peer_name(client_fd,false);
+#if defined(HAVE_IPV6)
+ if (psa->ss_family == AF_INET6) {
+ ((struct sockaddr_in6 *)psa)->sin6_port = htons(port);
+ }
+#endif
+ if (psa->ss_family == AF_INET) {
+ ((struct sockaddr_in *)psa)->sin_port = htons(port);
+ }
}
-const char *client_addr(void)
+const char *client_name(int fd)
{
- return get_peer_addr(client_fd);
+ return get_peer_name(fd,false);
}
-const char *client_socket_addr(void)
+const char *client_addr(int fd, char *addr, size_t addrlen)
{
- return get_socket_addr(client_fd);
+ return get_peer_addr(fd,addr,addrlen);
}
-int client_socket_port(void)
+const char *client_socket_addr(int fd, char *addr, size_t addr_len)
{
- return get_socket_port(client_fd);
+ return get_socket_addr(fd, addr, addr_len);
}
-int smb_read_error = 0;
+#if 0
+/* Not currently used. JRA. */
+int client_socket_port(int fd)
+{
+ return get_socket_port(fd);
+}
+#endif
+
+/****************************************************************************
+ Accessor functions to make thread-safe code easier later...
+****************************************************************************/
+
+void set_smb_read_error(enum smb_read_errors *pre,
+ enum smb_read_errors newerr)
+{
+ if (pre) {
+ *pre = newerr;
+ }
+}
+
+void cond_set_smb_read_error(enum smb_read_errors *pre,
+ enum smb_read_errors newerr)
+{
+ if (pre && *pre == SMB_READ_OK) {
+ *pre = newerr;
+ }
+}
/****************************************************************************
Determine if a file descriptor is in fact a socket.
void set_socket_options(int fd, const char *options)
{
- fstring tok;
+ TALLOC_CTX *ctx = talloc_stackframe();
+ char *tok;
- while (next_token(&options,tok," \t,", sizeof(tok))) {
+ while (next_token_talloc(ctx, &options, &tok," \t,")) {
int ret=0,i;
int value = 1;
char *p;
}
if (ret != 0) {
- DEBUG(0,("Failed to set socket option %s (Error %s)\n",
+ /* be aware that some systems like Solaris return
+ * EINVAL to a setsockopt() call when the client
+ * sent a RST previously - no need to worry */
+ DEBUG(2,("Failed to set socket option %s (Error %s)\n",
tok, strerror(errno) ));
}
}
+ TALLOC_FREE(ctx);
print_socket_options(fd);
}
time_out = timeout in milliseconds
****************************************************************************/
-ssize_t read_socket_with_timeout(int fd,
- char *buf,
- size_t mincnt,
- size_t maxcnt,
- unsigned int time_out)
+NTSTATUS read_socket_with_timeout(int fd, char *buf,
+ size_t mincnt, size_t maxcnt,
+ unsigned int time_out,
+ size_t *size_ret)
{
fd_set fds;
int selrtn;
ssize_t readret;
size_t nread = 0;
struct timeval timeout;
+ char addr[INET6_ADDRSTRLEN];
/* just checking .... */
if (maxcnt <= 0)
- return(0);
-
- smb_read_error = 0;
+ return NT_STATUS_OK;
/* Blocking read */
if (time_out == 0) {
if (readret == 0) {
DEBUG(5,("read_socket_with_timeout: "
"blocking read. EOF from client.\n"));
- smb_read_error = READ_EOF;
- return -1;
+ return NT_STATUS_END_OF_FILE;
}
if (readret == -1) {
- if (fd == client_fd) {
+ if (fd == get_client_fd()) {
/* Try and give an error message
* saying what client failed. */
DEBUG(0,("read_socket_with_timeout: "
"client %s read error = %s.\n",
- client_ip_string,
+ get_peer_addr(fd,addr,sizeof(addr)),
strerror(errno) ));
} else {
DEBUG(0,("read_socket_with_timeout: "
"read error = %s.\n",
strerror(errno) ));
}
- smb_read_error = READ_ERROR;
- return -1;
+ return map_nt_error_from_unix(errno);
}
nread += readret;
}
- return((ssize_t)nread);
+ goto done;
}
/* Most difficult - timeout read */
/* Check if error */
if (selrtn == -1) {
/* something is wrong. Maybe the socket is dead? */
- if (fd == client_fd) {
+ if (fd == get_client_fd()) {
/* Try and give an error message saying
* what client failed. */
DEBUG(0,("read_socket_with_timeout: timeout "
"read for client %s. select error = %s.\n",
- client_ip_string, strerror(errno) ));
+ get_peer_addr(fd,addr,sizeof(addr)),
+ strerror(errno) ));
} else {
DEBUG(0,("read_socket_with_timeout: timeout "
"read. select error = %s.\n",
strerror(errno) ));
}
- smb_read_error = READ_ERROR;
- return -1;
+ return map_nt_error_from_unix(errno);
}
/* Did we timeout ? */
if (selrtn == 0) {
DEBUG(10,("read_socket_with_timeout: timeout read. "
"select timed out.\n"));
- smb_read_error = READ_TIMEOUT;
- return -1;
+ return NT_STATUS_IO_TIMEOUT;
}
readret = sys_read(fd, buf+nread, maxcnt-nread);
/* we got EOF on the file descriptor */
DEBUG(5,("read_socket_with_timeout: timeout read. "
"EOF from client.\n"));
- smb_read_error = READ_EOF;
- return -1;
+ return NT_STATUS_END_OF_FILE;
}
if (readret == -1) {
/* the descriptor is probably dead */
- if (fd == client_fd) {
+ if (fd == get_client_fd()) {
/* Try and give an error message
* saying what client failed. */
DEBUG(0,("read_socket_with_timeout: timeout "
"read to client %s. read error = %s.\n",
- client_ip_string, strerror(errno) ));
+ get_peer_addr(fd,addr,sizeof(addr)),
+ strerror(errno) ));
} else {
DEBUG(0,("read_socket_with_timeout: timeout "
"read. read error = %s.\n",
strerror(errno) ));
}
- smb_read_error = READ_ERROR;
- return -1;
+ return map_nt_error_from_unix(errno);
}
nread += readret;
}
+ done:
/* Return the number we got */
- return (ssize_t)nread;
+ if (size_ret) {
+ *size_ret = nread;
+ }
+ return NT_STATUS_OK;
}
/****************************************************************************
Read data from the client, reading exactly N bytes.
****************************************************************************/
-ssize_t read_data(int fd,char *buffer,size_t N)
+NTSTATUS read_data(int fd, char *buffer, size_t N)
{
- ssize_t ret;
- size_t total=0;
-
- smb_read_error = 0;
-
- while (total < N) {
- ret = sys_read(fd,buffer + total,N - total);
-
- if (ret == 0) {
- DEBUG(10,("read_data: read of %d returned 0. "
- "Error = %s\n",
- (int)(N - total), strerror(errno) ));
- smb_read_error = READ_EOF;
- return 0;
- }
-
- if (ret == -1) {
- if (fd == client_fd) {
- /* Try and give an error message saying
- * what client failed. */
- DEBUG(0,("read_data: read failure for %d "
- "bytes to client %s. Error = %s\n",
- (int)(N - total),
- client_ip_string,
- strerror(errno) ));
- } else {
- DEBUG(0,("read_data: read failure for %d. "
- "Error = %s\n",
- (int)(N - total),
- strerror(errno) ));
- }
- smb_read_error = READ_ERROR;
- return -1;
- }
- total += ret;
- }
- return (ssize_t)total;
+ return read_socket_with_timeout(fd, buffer, N, N, 0, NULL);
}
/****************************************************************************
{
size_t total=0;
ssize_t ret;
+ char addr[INET6_ADDRSTRLEN];
while (total < N) {
ret = sys_write(fd,buffer + total,N - total);
if (ret == -1) {
- if (fd == client_fd) {
+ if (fd == get_client_fd()) {
/* Try and give an error message saying
* what client failed. */
DEBUG(0,("write_data: write failure in "
"writing to client %s. Error %s\n",
- client_ip_string, strerror(errno) ));
+ get_peer_addr(fd,addr,sizeof(addr)),
+ strerror(errno) ));
} else {
DEBUG(0,("write_data: write failure. "
"Error = %s\n", strerror(errno) ));
Timeout is in milliseconds.
****************************************************************************/
-static ssize_t read_smb_length_return_keepalive(int fd,
- char *inbuf,
- unsigned int timeout)
+NTSTATUS read_smb_length_return_keepalive(int fd, char *inbuf,
+ unsigned int timeout,
+ size_t *len)
{
- ssize_t len=0;
int msg_type;
- bool ok = false;
+ NTSTATUS status;
- while (!ok) {
- if (timeout > 0) {
- ok = (read_socket_with_timeout(fd,inbuf,4,4,timeout)
- == 4);
- } else {
- ok = (read_data(fd,inbuf,4) == 4);
- }
- if (!ok) {
- return -1;
- }
+ status = read_socket_with_timeout(fd, inbuf, 4, 4, timeout, NULL);
- len = smb_len(inbuf);
- msg_type = CVAL(inbuf,0);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
- if (msg_type == SMBkeepalive) {
- DEBUG(5,("Got keepalive packet\n"));
- }
+ *len = smb_len(inbuf);
+ msg_type = CVAL(inbuf,0);
+
+ if (msg_type == SMBkeepalive) {
+ DEBUG(5,("Got keepalive packet\n"));
}
- DEBUG(10,("got smb length of %lu\n",(unsigned long)len));
+ DEBUG(10,("got smb length of %lu\n",(unsigned long)(*len)));
- return(len);
+ return NT_STATUS_OK;
}
/****************************************************************************
Timeout is in milliseconds.
****************************************************************************/
-ssize_t read_smb_length(int fd, char *inbuf, unsigned int timeout)
+NTSTATUS read_smb_length(int fd, char *inbuf, unsigned int timeout,
+ size_t *len)
{
- ssize_t len;
+ uint8_t msgtype = SMBkeepalive;
- for(;;) {
- len = read_smb_length_return_keepalive(fd, inbuf, timeout);
+ while (msgtype == SMBkeepalive) {
+ NTSTATUS status;
- if(len < 0)
- return len;
+ status = read_smb_length_return_keepalive(fd, inbuf, timeout,
+ len);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
- /* Ignore session keepalives. */
- if(CVAL(inbuf,0) != SMBkeepalive)
- break;
+ msgtype = CVAL(inbuf, 0);
}
DEBUG(10,("read_smb_length: got smb length of %lu\n",
(unsigned long)len));
- return len;
+ return NT_STATUS_OK;
}
/****************************************************************************
Doesn't check the MAC on signed packets.
****************************************************************************/
-ssize_t receive_smb_raw(int fd,
- char *buffer,
- unsigned int timeout,
- size_t maxlen)
+NTSTATUS receive_smb_raw(int fd, char *buffer, unsigned int timeout,
+ size_t maxlen, size_t *p_len)
{
- ssize_t len,ret;
-
- smb_read_error = 0;
+ size_t len;
+ NTSTATUS status;
- len = read_smb_length_return_keepalive(fd,buffer,timeout);
- if (len < 0) {
- DEBUG(10,("receive_smb_raw: length < 0!\n"));
+ status = read_smb_length_return_keepalive(fd,buffer,timeout,&len);
- /*
- * Correct fix. smb_read_error may have already been
- * set. Only set it here if not already set. Global
- * variables still suck :-). JRA.
- */
-
- if (smb_read_error == 0)
- smb_read_error = READ_ERROR;
- return -1;
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("receive_smb_raw: %s!\n", nt_errstr(status)));
+ return status;
}
/*
DEBUG(0,("Invalid packet length! (%lu bytes).\n",
(unsigned long)len));
if (len > BUFFER_SIZE + (SAFETY_MARGIN/2)) {
-
- /*
- * Correct fix. smb_read_error may have already been
- * set. Only set it here if not already set. Global
- * variables still suck :-). JRA.
- */
-
- if (smb_read_error == 0)
- smb_read_error = READ_ERROR;
- return -1;
+ return NT_STATUS_INVALID_PARAMETER;
}
}
len = MIN(len,maxlen);
}
- if (timeout > 0) {
- ret = read_socket_with_timeout(fd,
- buffer+4,
- len,
- len,
- timeout);
- } else {
- ret = read_data(fd,buffer+4,len);
- }
+ status = read_socket_with_timeout(
+ fd, buffer+4, len, len, timeout, &len);
- if (ret != len) {
- if (smb_read_error == 0) {
- smb_read_error = READ_ERROR;
- }
- return -1;
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
}
/* not all of samba3 properly checks for packet-termination
SSVAL(buffer+4,len, 0);
}
- return len;
-}
-
-static ssize_t receive_smb_raw_talloc(TALLOC_CTX *mem_ctx, int fd,
- char **buffer, unsigned int timeout)
-{
- char lenbuf[4];
- ssize_t len,ret;
-
- smb_read_error = 0;
-
- len = read_smb_length_return_keepalive(fd, lenbuf, timeout);
- if (len < 0) {
- DEBUG(10,("receive_smb_raw: length < 0!\n"));
-
- /*
- * Correct fix. smb_read_error may have already been
- * set. Only set it here if not already set. Global
- * variables still suck :-). JRA.
- */
-
- if (smb_read_error == 0)
- smb_read_error = READ_ERROR;
- return -1;
- }
-
- /*
- * A WRITEX with CAP_LARGE_WRITEX can be 64k worth of data plus 65 bytes
- * of header. Don't print the error if this fits.... JRA.
- */
-
- if (len > (BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE)) {
- DEBUG(0,("Invalid packet length! (%lu bytes).\n",
- (unsigned long)len));
- if (len > BUFFER_SIZE + (SAFETY_MARGIN/2)) {
-
- /*
- * Correct fix. smb_read_error may have already been
- * set. Only set it here if not already set. Global
- * variables still suck :-). JRA.
- */
-
- if (smb_read_error == 0)
- smb_read_error = READ_ERROR;
- return -1;
- }
- }
-
- /*
- * The +4 here can't wrap, we've checked the length above already.
- */
-
- *buffer = TALLOC_ARRAY(mem_ctx, char, len+4);
-
- if (*buffer == NULL) {
- DEBUG(0, ("Could not allocate inbuf of length %d\n",
- (int)len+4));
- if (smb_read_error == 0)
- smb_read_error = READ_ERROR;
- return -1;
- }
-
- memcpy(*buffer, lenbuf, sizeof(lenbuf));
-
- if(len > 0) {
- if (timeout > 0) {
- ret = read_socket_with_timeout(fd,(*buffer)+4, len,
- len, timeout);
- } else {
- ret = read_data(fd, (*buffer)+4, len);
- }
-
- if (ret != len) {
- if (smb_read_error == 0) {
- smb_read_error = READ_ERROR;
- }
- return -1;
- }
- }
-
- return len + 4;
-}
-
-/****************************************************************************
- Wrapper for receive_smb_raw().
- Checks the MAC on signed packets.
-****************************************************************************/
-
-bool receive_smb(int fd, char *buffer, unsigned int timeout)
-{
- if (receive_smb_raw(fd, buffer, timeout, 0) < 0) {
- return false;
- }
-
- /* Check the incoming SMB signature. */
- if (!srv_check_sign_mac(buffer, true)) {
- DEBUG(0, ("receive_smb: SMB Signature verification "
- "failed on incoming packet!\n"));
- if (smb_read_error == 0) {
- smb_read_error = READ_BAD_SIG;
- }
- return false;
- }
-
- return true;
-}
-
-ssize_t receive_smb_talloc(TALLOC_CTX *mem_ctx, int fd, char **buffer,
- unsigned int timeout)
-{
- ssize_t len;
-
- len = receive_smb_raw_talloc(mem_ctx, fd, buffer, timeout);
-
- if (len < 0) {
- return -1;
- }
-
- /* Check the incoming SMB signature. */
- if (!srv_check_sign_mac(*buffer, true)) {
- DEBUG(0, ("receive_smb: SMB Signature verification failed on "
- "incoming packet!\n"));
- if (smb_read_error == 0) {
- smb_read_error = READ_BAD_SIG;
- }
- return -1;
- }
-
- return len;
-}
-
-/****************************************************************************
- Send an smb to a fd.
-****************************************************************************/
-
-bool send_smb(int fd, char *buffer)
-{
- size_t len;
- size_t nwritten=0;
- ssize_t ret;
-
- /* Sign the outgoing packet if required. */
- srv_calculate_sign_mac(buffer);
-
- len = smb_len(buffer) + 4;
-
- while (nwritten < len) {
- ret = write_data(fd,buffer+nwritten,len - nwritten);
- if (ret <= 0) {
- DEBUG(0,("Error writing %d bytes to client. %d. (%s)\n",
- (int)len,(int)ret, strerror(errno) ));
- return false;
- }
- nwritten += ret;
- }
-
- return true;
+ *p_len = len;
+ return NT_STATUS_OK;
}
/****************************************************************************
{
struct sockaddr_storage sock;
int res;
+ socklen_t slen = sizeof(struct sockaddr_in);
sock = *psock;
#if defined(HAVE_IPV6)
if (sock.ss_family == AF_INET6) {
((struct sockaddr_in6 *)&sock)->sin6_port = htons(port);
+ slen = sizeof(struct sockaddr_in6);
}
#endif
if (sock.ss_family == AF_INET) {
}
/* now we've got a socket - we need to bind it */
- if( bind( res, (struct sockaddr *)&sock, sizeof(sock) ) == -1 ) {
+ if (bind(res, (struct sockaddr *)&sock, slen) == -1 ) {
if( DEBUGLVL(dlevel) && (port == SMB_PORT1 ||
port == SMB_PORT2 || port == NMB_PORT) ) {
char addr[INET6_ADDRSTRLEN];
/* and connect it to the destination */
connect_again:
- ret = connect(res,(struct sockaddr *)&sock_out,sizeof(sock_out));
+ ret = sys_connect(res, (struct sockaddr *)&sock_out);
/* Some systems return EAGAIN when they mean EINPROGRESS */
if (ret < 0 && (errno == EINPROGRESS || errno == EALREADY ||
good_connect = false;
for (i=0; i<num_addrs; i++) {
+ const struct sockaddr * a =
+ (const struct sockaddr *)&(addrs[i]);
if (sockets[i] == -1)
continue;
- if (connect(sockets[i], (struct sockaddr *)&(addrs[i]),
- sizeof(*addrs)) == 0) {
+ if (sys_connect(sockets[i], a) == 0) {
/* Rather unlikely as we are non-blocking, but it
* might actually happen. */
resulting_index = i;
int type = SOCK_DGRAM;
struct sockaddr_in sock_out;
int res;
- struct in_addr *addr;
+ struct in_addr addr;
- addr = interpret_addr2(host);
+ (void)interpret_addr2(&addr, host);
res = socket(PF_INET, type, 0);
if (res == -1) {
}
memset((char *)&sock_out,'\0',sizeof(sock_out));
- putip((char *)&sock_out.sin_addr,(char *)addr);
+ putip((char *)&sock_out.sin_addr,(char *)&addr);
sock_out.sin_port = htons(port);
sock_out.sin_family = PF_INET;
- if (connect(res,(struct sockaddr *)&sock_out,sizeof(sock_out))) {
+ if (sys_connect(res,(struct sockaddr *)&sock_out)) {
close(res);
return -1;
}
******************************************************************/
static const char *get_peer_addr_internal(int fd,
+ char *addr_buf,
+ size_t addr_buf_len,
struct sockaddr_storage *pss,
socklen_t *plength)
{
struct sockaddr_storage ss;
socklen_t length = sizeof(ss);
- static char addr_buf[INET6_ADDRSTRLEN];
- safe_strcpy(addr_buf,"0.0.0.0",sizeof(addr_buf)-1);
+ strlcpy(addr_buf,"0.0.0.0",addr_buf_len);
if (fd == -1) {
return addr_buf;
}
print_sockaddr_len(addr_buf,
- sizeof(addr_buf),
+ addr_buf_len,
pss,
*plength);
return addr_buf;
}
-
/*******************************************************************
Matchname - determine if host name matches IP address. Used to
confirm a hostname lookup to prevent spoof attacks.
return false;
}
+/*******************************************************************
+ Deal with the singleton cache.
+******************************************************************/
+
+struct name_addr_pair {
+ struct sockaddr_storage ss;
+ const char *name;
+};
+
+/*******************************************************************
+ Lookup a name/addr pair. Returns memory allocated from memcache.
+******************************************************************/
+
+static bool lookup_nc(struct name_addr_pair *nc)
+{
+ DATA_BLOB tmp;
+
+ ZERO_STRUCTP(nc);
+
+ if (!memcache_lookup(
+ NULL, SINGLETON_CACHE,
+ data_blob_string_const("get_peer_name"),
+ &tmp)) {
+ return false;
+ }
+
+ memcpy(&nc->ss, tmp.data, sizeof(nc->ss));
+ nc->name = (const char *)tmp.data + sizeof(nc->ss);
+ return true;
+}
+
+/*******************************************************************
+ Save a name/addr pair.
+******************************************************************/
+
+static void store_nc(const struct name_addr_pair *nc)
+{
+ DATA_BLOB tmp;
+ size_t namelen = strlen(nc->name);
+
+ tmp = data_blob(NULL, sizeof(nc->ss) + namelen + 1);
+ if (!tmp.data) {
+ return;
+ }
+ memcpy(tmp.data, &nc->ss, sizeof(nc->ss));
+ memcpy(tmp.data+sizeof(nc->ss), nc->name, namelen+1);
+
+ memcache_add(NULL, SINGLETON_CACHE,
+ data_blob_string_const("get_peer_name"),
+ tmp);
+ data_blob_free(&tmp);
+}
+
/*******************************************************************
Return the DNS name of the remote end of a socket.
******************************************************************/
const char *get_peer_name(int fd, bool force_lookup)
{
- static fstring addr_buf;
- static pstring name_buf;
+ struct name_addr_pair nc;
+ char addr_buf[INET6_ADDRSTRLEN];
struct sockaddr_storage ss;
socklen_t length = sizeof(ss);
const char *p;
int ret;
- pstring tmp_name;
+ char name_buf[MAX_DNS_NAME_LENGTH];
+ char tmp_name[MAX_DNS_NAME_LENGTH];
/* reverse lookups can be *very* expensive, and in many
situations won't work because many networks don't link dhcp
with dns. To avoid the delay we avoid the lookup if
possible */
if (!lp_hostname_lookups() && (force_lookup == false)) {
- return get_peer_addr(fd);
+ length = sizeof(nc.ss);
+ nc.name = get_peer_addr_internal(fd, addr_buf, sizeof(addr_buf),
+ &nc.ss, &length);
+ store_nc(&nc);
+ lookup_nc(&nc);
+ return nc.name ? nc.name : "UNKNOWN";
}
- p = get_peer_addr_internal(fd, &ss, &length);
+ lookup_nc(&nc);
+
+ memset(&ss, '\0', sizeof(ss));
+ p = get_peer_addr_internal(fd, addr_buf, sizeof(addr_buf), &ss, &length);
/* it might be the same as the last one - save some DNS work */
- if (strcmp(p, addr_buf) == 0) {
- return name_buf;
+ if (addr_equal(&ss, &nc.ss)) {
+ return nc.name ? nc.name : "UNKNOWN";
}
- pstrcpy(name_buf,"UNKNOWN");
+ /* Not the same. We need to lookup. */
if (fd == -1) {
- return name_buf;
+ return "UNKNOWN";
}
- fstrcpy(addr_buf, p);
-
/* Look up the remote host name. */
- ret = getnameinfo((struct sockaddr *)&ss,
+ ret = sys_getnameinfo((struct sockaddr *)&ss,
length,
name_buf,
sizeof(name_buf),
"for %s with error %s\n",
p,
gai_strerror(ret)));
- pstrcpy(name_buf, p);
+ strlcpy(name_buf, p, sizeof(name_buf));
} else {
if (!matchname(name_buf, &ss, length)) {
DEBUG(0,("Matchname failed on %s %s\n",name_buf,p));
- pstrcpy(name_buf,"UNKNOWN");
+ strlcpy(name_buf,"UNKNOWN",sizeof(name_buf));
}
}
use --enable-developer or the clobber_region() call will
get you */
- pstrcpy(tmp_name, name_buf );
+ strlcpy(tmp_name, name_buf, sizeof(tmp_name));
alpha_strcpy(name_buf, tmp_name, "_-.", sizeof(name_buf));
if (strstr(name_buf,"..")) {
- pstrcpy(name_buf, "UNKNOWN");
+ strlcpy(name_buf, "UNKNOWN", sizeof(name_buf));
}
- return name_buf;
+ nc.name = name_buf;
+ nc.ss = ss;
+
+ store_nc(&nc);
+ lookup_nc(&nc);
+ return nc.name ? nc.name : "UNKNOWN";
}
/*******************************************************************
Return the IP addr of the remote end of a socket as a string.
******************************************************************/
-const char *get_peer_addr(int fd)
+const char *get_peer_addr(int fd, char *addr, size_t addr_len)
{
- return get_peer_addr_internal(fd, NULL, NULL);
+ return get_peer_addr_internal(fd, addr, addr_len, NULL, NULL);
}
/*******************************************************************
struct stat st;
int sock;
mode_t old_umask;
- pstring path;
+ char *path = NULL;
old_umask = umask(0);
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock == -1) {
- perror("socket");
- goto out_umask;
+ DEBUG(0, ("create_pipe_sock: socket error %s\n",
+ strerror(errno) ));
+ goto out_close;
}
- pstr_sprintf(path, "%s/%s", socket_dir, socket_name);
+ if (asprintf(&path, "%s/%s", socket_dir, socket_name) == -1) {
+ goto out_close;
+ }
unlink(path);
memset(&sunaddr, 0, sizeof(sunaddr));
sunaddr.sun_family = AF_UNIX;
- safe_strcpy(sunaddr.sun_path, path, sizeof(sunaddr.sun_path)-1);
+ strlcpy(sunaddr.sun_path, path, sizeof(sunaddr.sun_path));
if (bind(sock, (struct sockaddr *)&sunaddr, sizeof(sunaddr)) == -1) {
DEBUG(0, ("bind failed on pipe socket %s: %s\n", path,
goto out_close;
}
+ SAFE_FREE(path);
+
umask(old_umask);
return sock;
out_close:
- close(sock);
+ SAFE_FREE(path);
+ if (sock != -1)
+ close(sock);
out_umask:
umask(old_umask);
Get my own canonical name, including domain.
****************************************************************************/
-bool get_mydnsfullname(fstring my_dnsname)
+const char *get_mydnsfullname(void)
{
- static fstring dnshostname;
+ struct addrinfo *res = NULL;
+ char my_hostname[HOST_NAME_MAX];
+ bool ret;
+ DATA_BLOB tmp;
- if (!*dnshostname) {
- struct addrinfo *res = NULL;
- bool ret;
+ if (memcache_lookup(NULL, SINGLETON_CACHE,
+ data_blob_string_const("get_mydnsfullname"),
+ &tmp)) {
+ SMB_ASSERT(tmp.length > 0);
+ return (const char *)tmp.data;
+ }
- /* get my host name */
- if (gethostname(dnshostname, sizeof(dnshostname)) == -1) {
- *dnshostname = '\0';
- DEBUG(0,("get_mydnsfullname: gethostname failed\n"));
- return false;
- }
+ /* get my host name */
+ if (gethostname(my_hostname, sizeof(my_hostname)) == -1) {
+ DEBUG(0,("get_mydnsfullname: gethostname failed\n"));
+ return NULL;
+ }
- /* Ensure null termination. */
- dnshostname[sizeof(dnshostname)-1] = '\0';
+ /* Ensure null termination. */
+ my_hostname[sizeof(my_hostname)-1] = '\0';
- ret = interpret_string_addr_internal(&res,
- dnshostname,
- AI_ADDRCONFIG|AI_CANONNAME);
+ ret = interpret_string_addr_internal(&res,
+ my_hostname,
+ AI_ADDRCONFIG|AI_CANONNAME);
- if (!ret || res == NULL) {
- DEBUG(3,("get_mydnsfullname: getaddrinfo failed for "
- "name %s [%s]\n",
- dnshostname,
- gai_strerror(ret) ));
- return false;
- }
+ if (!ret || res == NULL) {
+ DEBUG(3,("get_mydnsfullname: getaddrinfo failed for "
+ "name %s [%s]\n",
+ my_hostname,
+ gai_strerror(ret) ));
+ return NULL;
+ }
- /*
- * Make sure that getaddrinfo() returns the "correct" host name.
- */
+ /*
+ * Make sure that getaddrinfo() returns the "correct" host name.
+ */
- if (res->ai_canonname == NULL) {
- DEBUG(3,("get_mydnsfullname: failed to get "
- "canonical name for %s\n",
- dnshostname));
- freeaddrinfo(res);
- return false;
- }
+ if (res->ai_canonname == NULL) {
+ DEBUG(3,("get_mydnsfullname: failed to get "
+ "canonical name for %s\n",
+ my_hostname));
+ freeaddrinfo(res);
+ return NULL;
+ }
+ /* This copies the data, so we must do a lookup
+ * afterwards to find the value to return.
+ */
- fstrcpy(dnshostname, res->ai_canonname);
- freeaddrinfo(res);
+ memcache_add(NULL, SINGLETON_CACHE,
+ data_blob_string_const("get_mydnsfullname"),
+ data_blob_string_const(res->ai_canonname));
+
+ if (!memcache_lookup(NULL, SINGLETON_CACHE,
+ data_blob_string_const("get_mydnsfullname"),
+ &tmp)) {
+ tmp = data_blob_talloc(talloc_tos(), res->ai_canonname,
+ strlen(res->ai_canonname) + 1);
}
- fstrcpy(my_dnsname, dnshostname);
- return true;
+
+ freeaddrinfo(res);
+
+ return (const char *)tmp.data;
}
/************************************************************
bool is_myname_or_ipaddr(const char *s)
{
- fstring name, dnsname;
- char *servername;
+ TALLOC_CTX *ctx = talloc_tos();
+ char *name = NULL;
+ const char *dnsname;
+ char *servername = NULL;
if (!s) {
return false;
}
/* Santize the string from '\\name' */
- fstrcpy(name, s);
+ name = talloc_strdup(ctx, s);
+ if (!name) {
+ return false;
+ }
servername = strrchr_m(name, '\\' );
if (!servername) {
}
/* Maybe it's my dns name */
- if (get_mydnsfullname(dnsname)) {
- if (strequal(servername, dnsname)) {
- return true;
- }
+ dnsname = get_mydnsfullname();
+ if (dnsname && strequal(servername, dnsname)) {
+ return true;
}
/* Handle possible CNAME records - convert to an IP addr. */
/* Maybe its an IP address? */
if (is_ipaddress(servername)) {
struct sockaddr_storage ss;
- struct iface_struct nics[MAX_INTERFACES];
+ struct iface_struct *nics;
int i, n;
if (!interpret_string_addr(&ss, servername, AI_NUMERICHOST)) {
return false;
}
+ nics = TALLOC_ARRAY(ctx, struct iface_struct,
+ MAX_INTERFACES);
+ if (!nics) {
+ return false;
+ }
n = get_interfaces(nics, MAX_INTERFACES);
for (i=0; i<n; i++) {
if (addr_equal(&nics[i].ip, &ss)) {
+ TALLOC_FREE(nics);
return true;
}
}
+ TALLOC_FREE(nics);
}
/* No match */
git.samba.org / jra / samba / .git / blobdiff