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/*
* Copyright (C) 2007-2008 by CERN/IT/GD/ITR
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: send2dicomcopyd.c,v $ $Revision: 1.6 $ $Date: 2009/01/11 00:43:26 $ CERN IT-GD/ITR Jean-Philippe Baud";
#endif /* not lint */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#if defined(_WIN32)
#include <winsock2.h>
#else
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#endif
#include "Cnetdb.h"
#ifdef CSEC
#include "Csec_api.h"
#endif
#include "dicomcopy_api.h"
#include "dpm.h"
#include "dpm_api.h"
#include "marshall.h"
#include "net.h"
#include "serrno.h"
#if defined(_WIN32)
extern char *ws_strerr;
#endif
/* send2dicomcopyd - send a request to the DPM DICOM backend and wait for the reply */
send2dicomcopyd(host, reqp, reql, user_repbuf, user_repbuf_len)
char *host;
char *reqp;
int reql;
char *user_repbuf;
int user_repbuf_len;
{
int actual_replen = 0;
struct addrinfo *ai;
struct addrinfo *aitop;
int c;
#ifdef CSEC
Csec_context_t ctx;
#endif
char dicomcopydhost[CA_MAXHOSTNAMELEN+1];
char func[16];
int gaierrno;
char *getconfent();
char *getenv();
struct addrinfo hints;
int isconnected;
int magic;
int n;
char *neterrstr = NULL;
char *p;
char prtbuf[PRTBUFSZ];
int rep_type;
char repbuf[REPBUFSZ];
int s;
int save_serrno;
char strport[NI_MAXSERV];
strcpy (func, "send2dicomcopyd");
if ((p = getenv ("DICOMCOPYD_PORT")) || (p = getconfent ("DICOMCOPYD", "PORT", 0))) {
strncpy (strport, p, sizeof(strport));
strport[sizeof(strport)-1] = '\0';
} else {
snprintf (strport, sizeof(strport), "%u", DICOMCOPYD_PORT);
serrno = 0;
}
if (host && *host)
strcpy (dicomcopydhost, host);
else if ((p = getenv ("DICOMCOPYD_HOST")) || (p = getconfent ("DICOMCOPYD", "HOST", 0)))
strcpy (dicomcopydhost, p);
else {
#if defined(DPM_HOST)
strcpy (dicomcopydhost, DPM_HOST);
#else
gethostname (dicomcopydhost, sizeof(dicomcopydhost));
#endif
serrno = 0;
}
memset (&hints, 0, sizeof(struct addrinfo));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
#ifdef AI_ADDRCONFIG
hints.ai_flags |= AI_ADDRCONFIG;
#endif
gaierrno = Cgetaddrinfo (dicomcopydhost, strport, &hints, &aitop);
if (gaierrno !=0 && serrno == 0)
serrno = SENOSHOST;
if (gaierrno == EAI_NONAME) {
dpm_errmsg (func, DP009, "Host unknown:", dicomcopydhost);
return (-1);
} else if (gaierrno != 0) {
dpm_errmsg (func, "Error during lookup of %s: %s\n",
dicomcopydhost, Cgai_strerror (gaierrno));
return (-1);
}
isconnected = 0;
save_serrno = 0;
for (ai = aitop; ai && !isconnected; ai = ai->ai_next) {
if (ai->ai_family != PF_INET && ai->ai_family != PF_INET6)
continue;
if ((s = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol))<0)
continue;
if (connect (s, ai->ai_addr, ai->ai_addrlen) < 0) {
#if defined(_WIN32)
if (WSAGetLastError() == WSAEAFNOSUPPORT) {
#else
if (errno == EAFNOSUPPORT) {
#endif
(void) netclose (s);
continue;
}
#if defined(_WIN32)
if (WSAGetLastError() == WSAECONNREFUSED) {
#else
if (errno == ECONNREFUSED) {
#endif
save_serrno = EDPMNACT;
} else {
save_serrno = SECOMERR;
}
p = neterror ();
if (neterrstr)
free (neterrstr);
neterrstr = strdup (p);
(void) netclose (s);
} else {
isconnected = 1;
}
}
freeaddrinfo (aitop);
if (!isconnected) {
serrno = (save_serrno) ? save_serrno : SECOMERR;
switch(serrno) {
case EDPMNACT:
dpm_errmsg (func, DP000, dicomcopydhost);
break;
default:
if (neterrstr) {
dpm_errmsg (func, DP002, "connect", neterrstr);
} else {
dpm_errmsg (func, "Could not create "
"an outgoing connection\n");
}
break;
}
if (neterrstr)
free (neterrstr);
return (-1);
}
if (neterrstr) {
free (neterrstr);
neterrstr = NULL;
}
#ifdef CSEC
Csec_client_initContext (&ctx, CSEC_SERVICE_TYPE_HOST, NULL);
if (Csec_client_establishContext (&ctx, s) < 0) {
if (serrno != SECOMERR && serrno != SETIMEDOUT)
dpm_errmsg (func, DP002, "send", Csec_getErrorMessageSummary (PRTBUFSZ-48));
(void) netclose (s);
Csec_clearContext (&ctx);
return (-1);
}
Csec_clearContext (&ctx);
#endif
/* send request to DPM DICOM server */
if ((n = netwrite (s, reqp, reql)) <= 0) {
if (n == 0)
dpm_errmsg (func, DP002, "send", sys_serrlist[SERRNO]);
else
dpm_errmsg (func, DP002, "send", neterror());
(void) netclose (s);
serrno = SECOMERR;
return (-1);
}
/* get reply */
while (1) {
if ((n = netread (s, repbuf, 3 * LONGSIZE)) <= 0) {
if (n == 0)
dpm_errmsg (func, DP002, "recv", sys_serrlist[SERRNO]);
else
dpm_errmsg (func, DP002, "recv", neterror());
(void) netclose (s);
serrno = SECOMERR;
return (-1);
}
p = repbuf;
unmarshall_LONG (p, magic) ;
unmarshall_LONG (p, rep_type) ;
unmarshall_LONG (p, c) ;
if (rep_type == DPM_RC) {
(void) netclose (s);
if (c) {
serrno = c;
c = -1;
}
break;
}
if (c > REPBUFSZ) {
dpm_errmsg (func, "reply too large\n");
serrno = SEINTERNAL;
return (-1);
}
if ((n = netread (s, repbuf, c)) <= 0) {
if (n == 0)
dpm_errmsg (func, DP002, "recv", sys_serrlist[SERRNO]);
else
dpm_errmsg (func, DP002, "recv", neterror());
(void) netclose (s);
serrno = SECOMERR;
return (-1);
}
p = repbuf;
if (rep_type == MSG_ERR) {
unmarshall_STRING (p, prtbuf);
dpm_errmsg (NULL, "%s", prtbuf);
} else if (user_repbuf) {
if (actual_replen + c <= user_repbuf_len)
n = c;
else
n = user_repbuf_len - actual_replen;
if (n) {
memcpy (user_repbuf + actual_replen, repbuf, n);
actual_replen += n;
}
}
}
return (c);
}
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