/*
* Amanda, The Advanced Maryland Automatic Network Disk Archiver
- * Copyright (c) 1991-1998 University of Maryland at College Park
+ * Copyright (c) 1991-1999 University of Maryland at College Park
* All Rights Reserved.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* University of Maryland at College Park
*/
/*
- * $Id: dgram.c,v 1.11.2.3.4.3.2.4 2002/11/12 19:19:03 martinea Exp $
+ * $Id: dgram.c,v 1.32 2006/07/05 19:54:20 martinea Exp $
*
* library routines to marshall/send, recv/unmarshall UDP packets
*/
#include "amanda.h"
+#include "arglist.h"
#include "dgram.h"
#include "util.h"
+#include "conffile.h"
+#include "sockaddr-util.h"
-void dgram_socket(dgram, socket)
-dgram_t *dgram;
-int socket;
+void
+dgram_socket(
+ dgram_t * dgram,
+ int socket)
{
- if(socket < 0 || socket >= FD_SETSIZE) {
- error("dgram_socket: socket %d out of range (0 .. %d)\n",
- socket, FD_SETSIZE-1);
+ if(socket < 0 || socket >= (int)FD_SETSIZE) {
+ error(_("dgram_socket: socket %d out of range (0 .. %d)\n"),
+ socket, (int)FD_SETSIZE-1);
+ /*NOTREACHED*/
}
dgram->socket = socket;
}
-int dgram_bind(dgram, portp)
-dgram_t *dgram;
-int *portp;
+int
+dgram_bind(
+ dgram_t * dgram,
+ sa_family_t family,
+ in_port_t * portp)
{
- int s;
- socklen_t len;
- struct sockaddr_in name;
+ int s, retries;
+ socklen_t_equiv len;
+ sockaddr_union name;
int save_errno;
+ int *portrange;
- if((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+ portrange = getconf_intrange(CNF_RESERVED_UDP_PORT);
+ *portp = (in_port_t)0;
+ if((s = socket(family, SOCK_DGRAM, 0)) == -1) {
save_errno = errno;
- dbprintf(("%s: dgram_bind: socket() failed: %s\n",
- debug_prefix(NULL),
- strerror(save_errno)));
+ dbprintf(_("dgram_bind: socket() failed: %s\n"),
+ strerror(save_errno));
errno = save_errno;
return -1;
}
- if(s < 0 || s >= FD_SETSIZE) {
- dbprintf(("%s: dgram_bind: socket out of range: %d\n",
- debug_prefix(NULL),
- s));
+ if(s < 0 || s >= (int)FD_SETSIZE) {
+ dbprintf(_("dgram_bind: socket out of range: %d\n"),
+ s);
aclose(s);
errno = EMFILE; /* out of range */
return -1;
}
- memset(&name, 0, sizeof(name));
- name.sin_family = AF_INET;
- name.sin_addr.s_addr = INADDR_ANY;
+ SU_INIT(&name, family);
+ SU_SET_INADDR_ANY(&name);
/*
* If a port range was specified, we try to get a port in that
* range first. Next, we try to get a reserved port. If that
* fails, we just go for any port.
+ *
+ * In all cases, not to use port that's assigned to other services.
*
* It is up to the caller to make sure we have the proper permissions
* to get the desired port, and to make sure we return a port that
* is within the range it requires.
*/
-#ifdef UDPPORTRANGE
- if (bind_portrange(s, &name, UDPPORTRANGE) == 0)
- goto out;
-#endif
-
- if (bind_portrange(s, &name, 512, IPPORT_RESERVED - 1) == 0)
- goto out;
+ for (retries = 0; ; retries++) {
+ if (bind_portrange(s, &name, portrange[0], portrange[1], "udp") == 0)
+ goto out;
+ dbprintf(_("dgram_bind: Could not bind to port in range: %d - %d.\n"),
+ portrange[0], portrange[1]);
+ if (retries >= BIND_CYCLE_RETRIES) {
+ dbprintf(_("dgram_bind: Giving up...\n"));
+ break;
+ }
- name.sin_port = INADDR_ANY;
- if (bind(s, (struct sockaddr *)&name, (socklen_t)sizeof name) == -1) {
- save_errno = errno;
- dbprintf(("%s: dgram_bind: bind(INADDR_ANY) failed: %s\n",
- debug_prefix(NULL),
- strerror(save_errno)));
- errno = save_errno;
- aclose(s);
- return -1;
+ dbprintf(_("dgram_bind: Retrying entire range after 10 second delay.\n"));
+ sleep(15);
}
+ save_errno = errno;
+ dbprintf(_("dgram_bind: bind(in6addr_any) failed: %s\n"),
+ strerror(save_errno));
+ aclose(s);
+ errno = save_errno;
+ return -1;
+
out:
/* find out what name was actually used */
- len = (socklen_t) sizeof name;
+ len = (socklen_t_equiv)sizeof(name);
if(getsockname(s, (struct sockaddr *)&name, &len) == -1) {
save_errno = errno;
- dbprintf(("%s: dgram_bind: getsockname() failed: %s\n",
- debug_prefix(NULL),
- strerror(save_errno)));
+ dbprintf(_("dgram_bind: getsockname() failed: %s\n"), strerror(save_errno));
errno = save_errno;
aclose(s);
return -1;
}
- *portp = ntohs(name.sin_port);
+ *portp = SU_GET_PORT(&name);
dgram->socket = s;
- dbprintf(("%s: dgram_bind: socket bound to %s.%d\n",
- debug_prefix_time(NULL),
- inet_ntoa(name.sin_addr),
- *portp));
+
+ dbprintf(_("dgram_bind: socket %d bound to %s\n"),
+ dgram->socket, str_sockaddr(&name));
return 0;
}
-int dgram_send_addr(addr, dgram)
-struct sockaddr_in addr;
-dgram_t *dgram;
+int
+dgram_send_addr(
+ sockaddr_union *addr,
+ dgram_t * dgram)
{
- int s;
+ int s, rc;
int socket_opened;
- struct sockaddr_in addr_save;
int save_errno;
int max_wait;
int wait_count;
+#if defined(USE_REUSEADDR)
+ const int on = 1;
+ int r;
+#endif
+ dbprintf(_("dgram_send_addr(addr=%p, dgram=%p)\n"),
+ addr, dgram);
+ dump_sockaddr(addr);
+ dbprintf(_("dgram_send_addr: %p->socket = %d\n"),
+ dgram, dgram->socket);
if(dgram->socket != -1) {
s = dgram->socket;
socket_opened = 0;
} else {
- if((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+ if((s = socket(SU_GET_FAMILY(addr), SOCK_DGRAM, 0)) == -1) {
save_errno = errno;
- dbprintf(("%s: dgram_send_addr: socket() failed: %s\n",
- debug_prefix(NULL),
- strerror(save_errno)));
+ dbprintf(_("dgram_send_addr: socket() failed: %s\n"),
+ strerror(save_errno));
errno = save_errno;
return -1;
}
socket_opened = 1;
- }
-
- if(s < 0 || s >= FD_SETSIZE) {
- dbprintf(("%s: dgram_send_addr: socket out of range: %d\n",
- debug_prefix(NULL),
- s));
- if(socket_opened) {
- aclose(s);
+#ifdef USE_REUSEADDR
+ r = setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
+ (void *)&on, (socklen_t_equiv)sizeof(on));
+ if (r < 0) {
+ dbprintf(_("dgram_send_addr: setsockopt(SO_REUSEADDR) failed: %s\n"),
+ strerror(errno));
}
- errno = EMFILE; /* out of range */
- return -1;
+#endif
}
- memcpy(&addr_save, &addr, sizeof(addr));
- max_wait = 300 / 5; /* five minutes */
- wait_count = 0;
- while(sendto(s,
+ if(s < 0 || s >= (int)FD_SETSIZE) {
+ dbprintf(_("dgram_send_addr: socket out of range: %d\n"), s);
+ errno = EMFILE; /* out of range */
+ rc = -1;
+ } else {
+ max_wait = 300 / 5; /* five minutes */
+ wait_count = 0;
+ rc = 0;
+ while(sendto(s,
dgram->data,
dgram->len,
0,
- (struct sockaddr *)&addr,
- (socklen_t) sizeof(struct sockaddr_in)) == -1) {
+ (struct sockaddr *)addr,
+ SS_LEN(addr)) == -1) {
#ifdef ECONNREFUSED
- if(errno == ECONNREFUSED && wait_count++ < max_wait) {
- sleep(5);
- dbprintf(("%s: dgram_send_addr: sendto(%s.%d): retry %d after ECONNREFUSED\n",
- debug_prefix_time(NULL),
- inet_ntoa(addr_save.sin_addr),
- (int) ntohs(addr.sin_port),
- wait_count));
- continue;
- }
+ if(errno == ECONNREFUSED && wait_count++ < max_wait) {
+ sleep(5);
+ dbprintf(_("dgram_send_addr: sendto(%s): retry %d after ECONNREFUSED\n"),
+ str_sockaddr(addr),
+ wait_count);
+ continue;
+ }
+#endif
+#ifdef EAGAIN
+ if(errno == EAGAIN && wait_count++ < max_wait) {
+ sleep(5);
+ dbprintf(_("dgram_send_addr: sendto(%s): retry %d after EAGAIN\n"),
+ str_sockaddr(addr),
+ wait_count);
+ continue;
+ }
#endif
- save_errno = errno;
- dbprintf(("%s: dgram_send_addr: sendto(%s.%d) failed: %s \n",
- debug_prefix_time(NULL),
- inet_ntoa(addr_save.sin_addr),
- (int) ntohs(addr.sin_port),
- strerror(save_errno)));
- errno = save_errno;
- return -1;
- }
-
- if(socket_opened) {
- if(close(s) == -1) {
save_errno = errno;
- dbprintf(("%s: dgram_send_addr: close(%s.%d): failed: %s\n",
- debug_prefix(NULL),
- inet_ntoa(addr_save.sin_addr),
- (int) ntohs(addr.sin_port),
- strerror(save_errno)));
+ dbprintf(_("dgram_send_addr: sendto(%s) failed: %s \n"),
+ str_sockaddr(addr),
+ strerror(save_errno));
errno = save_errno;
- return -1;
+ rc = -1;
+ break;
}
- s = -1;
}
- return 0;
-}
-
-
-int dgram_send(hostname, port, dgram)
-char *hostname;
-int port;
-dgram_t *dgram;
-{
- struct sockaddr_in name;
- struct hostent *hp;
- int save_errno;
-
- if((hp = gethostbyname(hostname)) == 0) {
+ if(socket_opened) {
save_errno = errno;
- dbprintf(("%s: dgram_send: gethostbyname(%s) failed\n",
- debug_prefix_time(NULL),
- hostname));
+ if(close(s) == -1) {
+ dbprintf(_("dgram_send_addr: close(%s): failed: %s\n"),
+ str_sockaddr(addr),
+ strerror(errno));
+ /*
+ * Calling function should not care that the close failed.
+ * It does care about the send results though.
+ */
+ }
errno = save_errno;
- return -1;
}
- memcpy(&name.sin_addr, hp->h_addr, hp->h_length);
- name.sin_family = AF_INET;
- name.sin_port = htons(port);
- return dgram_send_addr(name, dgram);
+ return rc;
}
-int dgram_recv(dgram, timeout, fromaddr)
-dgram_t *dgram;
-int timeout;
-struct sockaddr_in *fromaddr;
+
+ssize_t
+dgram_recv(
+ dgram_t * dgram,
+ int timeout,
+ sockaddr_union *fromaddr)
{
- fd_set ready;
+ SELECT_ARG_TYPE ready;
struct timeval to;
ssize_t size;
int sock;
- socklen_t addrlen;
- int nfound;
+ socklen_t_equiv addrlen;
+ ssize_t nfound;
int save_errno;
sock = dgram->socket;
to.tv_sec = timeout;
to.tv_usec = 0;
- nfound = select(sock+1, (SELECT_ARG_TYPE *)&ready, NULL, NULL, &to);
+ dbprintf(_("dgram_recv(dgram=%p, timeout=%u, fromaddr=%p)\n"),
+ dgram, timeout, fromaddr);
+
+ nfound = (ssize_t)select(sock+1, &ready, NULL, NULL, &to);
if(nfound <= 0 || !FD_ISSET(sock, &ready)) {
save_errno = errno;
if(nfound < 0) {
- dbprintf(("%s: dgram_recv: select() failed: %s\n",
- debug_prefix_time(NULL),
- strerror(save_errno)));
+ dbprintf(_("dgram_recv: select() failed: %s\n"), strerror(save_errno));
} else if(nfound == 0) {
- dbprintf(("%s: dgram_recv: timeout after %d second%s\n",
- debug_prefix_time(NULL),
- timeout,
- (timeout == 1) ? "" : "s"));
+ dbprintf(plural(_("dgram_recv: timeout after %d second\n"),
+ _("dgram_recv: timeout after %d seconds\n"),
+ timeout),
+ timeout);
nfound = 0;
} else if (!FD_ISSET(sock, &ready)) {
int i;
for(i = 0; i < sock + 1; i++) {
if(FD_ISSET(i, &ready)) {
- dbprintf(("%s: dgram_recv: got fd %d instead of %d\n",
- debug_prefix_time(NULL),
- i,
- sock));
+ dbprintf(_("dgram_recv: got fd %d instead of %d\n"), i, sock);
}
}
save_errno = EBADF;
return nfound;
}
- addrlen = (socklen_t) sizeof(struct sockaddr_in);
- size = recvfrom(sock, dgram->data, MAX_DGRAM, 0,
+ addrlen = (socklen_t_equiv)sizeof(sockaddr_union);
+ size = recvfrom(sock, dgram->data, (size_t)MAX_DGRAM, 0,
(struct sockaddr *)fromaddr, &addrlen);
if(size == -1) {
save_errno = errno;
- dbprintf(("%s: dgram_recv: recvfrom() failed: %s\n",
- debug_prefix(NULL),
- strerror(save_errno)));
+ dbprintf(_("dgram_recv: recvfrom() failed: %s\n"), strerror(save_errno));
errno = save_errno;
return -1;
}
- dgram->len = size;
+ dump_sockaddr(fromaddr);
+ dgram->len = (size_t)size;
dgram->data[size] = '\0';
dgram->cur = dgram->data;
return size;
}
-void dgram_zero(dgram)
-dgram_t *dgram;
+void
+dgram_zero(
+ dgram_t * dgram)
{
dgram->cur = dgram->data;
dgram->len = 0;
*(dgram->cur) = '\0';
}
-dgram_t *debug_dgram_alloc(s, l)
-char *s;
-int l;
+printf_arglist_function1(int dgram_cat, dgram_t *, dgram, const char *, fmt)
{
- dgram_t *p;
-
- malloc_enter(dbmalloc_caller_loc(s, l));
- p = (dgram_t *) alloc(sizeof(dgram_t));
- dgram_zero(p);
- p->socket = -1;
- malloc_leave(dbmalloc_caller_loc(s, l));
+ ssize_t bufsize;
+ va_list argp;
+ int len;
- return p;
-}
+ assert(dgram != NULL);
+ assert(fmt != NULL);
+ assert(dgram->len == (size_t)(dgram->cur - dgram->data));
+ assert(dgram->len < SIZEOF(dgram->data));
-void dgram_cat(dgram, str)
-dgram_t *dgram;
-const char *str;
-{
- int len = strlen(str);
+ bufsize = (ssize_t)(sizeof(dgram->data) - dgram->len);
+ if (bufsize <= 0)
+ return -1;
- if(dgram->len + len > MAX_DGRAM) len = MAX_DGRAM - dgram->len;
- strncpy(dgram->cur, str, len);
- dgram->cur += len;
- dgram->len += len;
- *(dgram->cur) = '\0';
+ arglist_start(argp, fmt);
+ len = g_vsnprintf(dgram->cur, (size_t)bufsize, fmt, argp);
+ arglist_end(argp);
+ if(len < 0) {
+ return -1;
+ } else if((ssize_t)len > bufsize) {
+ dgram->len = sizeof(dgram->data);
+ dgram->cur = dgram->data + dgram->len;
+ return -1;
+ }
+ else {
+ dgram->len += len;
+ dgram->cur = dgram->data + dgram->len;
+ }
+ return 0;
}
-void dgram_eatline(dgram)
-dgram_t *dgram;
+void
+dgram_eatline(
+ dgram_t * dgram)
{
char *p = dgram->cur;
char *end = dgram->data + dgram->len;
- while(p < end && *p && *p != '\n') p++;
- if(*p == '\n') p++;
+ while(p < end && *p && *p != '\n')
+ p++;
+ if(*p == '\n')
+ p++;
dgram->cur = p;
}
projects / debian / amanda / blobdiff