+/*
+ * Copyright (c) 1995, Index Data
+ * See the file LICENSE for details.
+ * Sebastian Hammer, Adam Dickmeiss
+ *
+ * $Log: xmosi.c,v $
+ * Revision 1.1 1995-06-14 09:58:20 quinn
+ * Renamed yazlib to comstack.
+ *
+ * Revision 1.15 1995/05/29 08:12:33 quinn
+ * Updates to aynch. operations.
+ *
+ * Revision 1.14 1995/05/16 09:37:31 quinn
+ * Fixed bug
+ *
+ * Revision 1.13 1995/05/16 08:51:19 quinn
+ * License, documentation, and memory fixes
+ *
+ * Revision 1.12 1995/05/02 08:53:24 quinn
+ * Trying in vain to fix comm with ISODE
+ *
+ * Revision 1.11 1995/04/21 16:32:08 quinn
+ * *** empty log message ***
+ *
+ * Revision 1.10 1995/03/27 08:36:14 quinn
+ * Some work on nonblocking operation in xmosi.c and rfct.c.
+ * Added protocol parameter to cs_create()
+ *
+ * Revision 1.9 1995/03/20 09:47:23 quinn
+ * Added server-side support to xmosi.c
+ * Fixed possible problems in rfct
+ * Other little mods
+ *
+ * Revision 1.8 1995/03/16 13:29:30 quinn
+ * Beginning to add server-side functions
+ *
+ * Revision 1.7 1995/03/14 10:28:47 quinn
+ * Adding server-side support to tcpip.c and fixing bugs in nonblocking I/O
+ *
+ * Revision 1.6 1995/03/09 15:22:43 quinn
+ * Fixed two bugs in get/rcv
+ *
+ * Revision 1.5 1995/03/07 16:29:47 quinn
+ * Various fixes.
+ *
+ * Revision 1.4 1995/03/07 10:26:56 quinn
+ * Initialized type field in the comstacks.
+ *
+ * Revision 1.3 1995/03/06 16:48:03 quinn
+ * Smallish changes.
+ *
+ * Revision 1.2 1995/03/06 10:54:41 quinn
+ * Server-side functions (t_bind/t_listen/t_accept) seem to work ok, now.
+ * Nonblocking mode needs work (and testing!)
+ * Added makensap to replace function in mosiutil.c.
+ *
+ * Revision 1.1 1995/03/01 08:40:33 quinn
+ * First working version of rfct. Addressing needs work.
+ *
+ */
+
+/*
+ * Glue layer for Peter Furniss' xtimosi package.
+ */
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <comstack.h>
+#include <xmosi.h>
+
+#include <oid.h>
+
+int mosi_connect(COMSTACK h, void *address);
+int mosi_get(COMSTACK h, char **buf, int *bufsize);
+int mosi_put(COMSTACK h, char *buf, int size);
+int mosi_more(COMSTACK h) { return 0; } /* not correct */
+int mosi_close(COMSTACK h);
+int mosi_rcvconnect(COMSTACK h);
+int mosi_bind(COMSTACK h, void *address, int mode);
+int mosi_listen(COMSTACK h, char *addrp, int *addrlen);
+COMSTACK mosi_accept(COMSTACK h);
+
+typedef struct mosi_state
+{
+ struct t_info info; /* data returned by t_open */
+ struct t_call *call;
+ int hasread; /* how many bytes read of current PDU */
+ int haswrit; /* how many bytes have we written */
+} mosi_state;
+
+static char *oidtostr(int *o)
+{
+ static char buf[512];
+
+ buf[0] = '\0';
+ while (*o >= 0)
+ {
+ sprintf(buf + strlen(buf), "%d", *o);
+ if (*(++o) >= 0)
+ strcat(buf, " ");
+ }
+ return buf;
+}
+
+static int addopt(struct netbuf *optbuf, unsigned long level, unsigned long
+ name, enum oid_proto proto, enum oid_class class, enum oid_value value)
+{
+ int *oid;
+ oident ent;
+ char *str;
+
+ ent.proto = proto;
+ ent.class = class;
+ ent.value = value;
+ if (!(oid = oid_getoidbyent(&ent)))
+ return -1;
+ str = oidtostr(oid);
+ if (addoidoption(optbuf, level, name, str) < 0)
+ return -1;
+ return 0;
+}
+
+COMSTACK mosi_type(int blocking, int protocol)
+{
+ COMSTACK r;
+ mosi_state *state;
+ int flags = O_RDWR;
+
+ if (!(r = malloc(sizeof(*r))))
+ return 0;
+ if (!(state = r->private = malloc(sizeof(*state))))
+ return 0;
+
+ state->call = 0;
+ state->hasread = 0;
+ state->haswrit = 0;
+ r->protocol = protocol;
+ r->state = CS_UNBND;
+ r->type = mosi_type;
+ r->blocking = blocking;
+ r->f_connect = mosi_connect;
+ r->f_put = mosi_put;
+ r->f_get = mosi_get;
+ r->f_close = mosi_close;
+ r->f_more = mosi_more;
+ r->f_rcvconnect = mosi_rcvconnect;
+ r->f_bind = mosi_bind;
+ r->f_listen = mosi_listen;
+ r->f_accept = mosi_accept;
+
+ if (!blocking)
+ flags |= O_NONBLOCK;
+ if ((r->iofile = u_open(CO_MOSI_NAME, flags, &state->info)) < 0)
+ return 0;
+
+ r->timeout = COMSTACK_DEFAULT_TIMEOUT;
+
+ return r;
+}
+
+int hex2oct(char *hex, char *oct)
+{
+ int len = 0;
+ unsigned val;
+
+ while (sscanf(hex, "%2x", &val) == 1)
+ {
+ if (strlen(hex) < 2)
+ return -1;
+ *((unsigned char*) oct++) = (unsigned char) val;
+ len++;
+ hex += 2;
+ }
+ return len;
+}
+
+/*
+ * addressing specific to our hack of OSI transport. A sockaddr_in wrapped
+ * up in a t_mosiaddr in a netbuf (on a stick).
+ */
+struct netbuf *mosi_strtoaddr(const char *str)
+{
+ struct netbuf *ret = malloc(sizeof(struct netbuf));
+ struct sockaddr_in *add = malloc(sizeof(struct sockaddr_in));
+ struct t_mosiaddr *mosiaddr = malloc(sizeof(struct t_mosiaddr));
+ struct hostent *hp;
+ char *p, *b, buf[512], *nsap;
+ short int port = 102;
+ unsigned long tmpadd;
+ int ll = 0;
+
+ assert(ret && add && mosiaddr);
+#if 0
+ mosiaddr->osi_ap_inv_id = NO_INVOKEID;
+ mosiaddr->osi_ae_inv_id = NO_INVOKEID;
+#endif
+ mosiaddr->osi_apt_len = 0;
+ mosiaddr->osi_aeq_len = 0;
+ p = (char*)MOSI_PADDR(mosiaddr);
+ *(p++) = 0; /* No presentation selector */
+ ll++;
+ *(p++) = 0; /* no session selector */
+ ll++;
+ /* do we have a transport selector? */
+ strcpy(buf, str);
+ if ((nsap = strchr(buf, '/')))
+ {
+ *(nsap++) = '\0';
+ if ((*p = hex2oct(buf, p + 1)) < 0)
+ return 0;
+ ll += *p + 1;
+ p += *p + 1;
+ }
+ else
+ {
+ nsap = buf;
+ *(p++) = 0;
+ ll++;
+ }
+ if (nsap && *nsap)
+ {
+ add->sin_family = AF_INET;
+ strcpy(buf, nsap);
+ if ((b = strchr(buf, ':')))
+ {
+ *b = 0;
+ port = atoi(b + 1);
+ }
+ add->sin_port = htons(port);
+ if ((hp = gethostbyname(buf)))
+ memcpy(&add->sin_addr.s_addr, *hp->h_addr_list, sizeof(struct in_addr));
+ else if ((tmpadd = inet_addr(buf)) != 0)
+ memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
+ else
+ return 0;
+ *(p++) = (char) sizeof(*add);
+ ll++;
+ memcpy(p, add, sizeof(*add));
+ ll += sizeof(*add);
+ }
+ else
+ {
+ *(p++) = 0;
+ ll++;
+ }
+ mosiaddr->osi_paddr_len = ll;
+ ret->buf = (char*)mosiaddr;
+ ret->len = ret->maxlen = 100 /* sizeof(*mosiaddr) */ ;
+
+ return ret;
+}
+
+int mosi_connect(COMSTACK h, void *address)
+{
+ struct netbuf *addr = address, *local;
+ struct t_call *snd, *rcv;
+ struct t_bind bnd;
+
+ if (!(snd = (struct t_call *) u_alloc(h->iofile, T_CALL, T_ALL)))
+ return -1;
+ if (!(rcv = (struct t_call *) u_alloc(h->iofile, T_CALL, T_ALL)))
+ return -1;
+
+ snd->udata.len = 0;
+ if (addopt(&snd->opt, ISO_APCO, AP_CNTX_NAME, h->protocol, CLASS_APPCTX,
+ VAL_BASIC_CTX) < 0)
+ return -1;
+ if (addopt(&snd->opt, ISO_APCO, AP_ABS_SYN, h->protocol, CLASS_ABSYN,
+ VAL_APDU) < 0)
+ return -1;
+ /*
+ * We don't specify record formats yet.
+ *
+ * Xtimosi adds the oid for BER as transfer syntax automatically.
+ */
+
+ bnd.qlen = 0;
+
+ if (h->state == CS_UNBND)
+ {
+ local = mosi_strtoaddr(""); /* not good in long run */
+ memcpy(&bnd.addr, local, sizeof(*local));
+ if (u_bind(h->iofile, &bnd, 0) < 0)
+ return -1;
+ }
+
+ memcpy(&snd->addr, addr, sizeof(*addr));
+ if (u_connect(h->iofile, snd, rcv) < 0)
+ {
+ if (t_errno == TNODATA)
+ return 1;
+ return -1;
+ }
+ return 0;
+}
+
+int mosi_rcvconnect(COMSTACK h)
+{
+ if (u_rcvconnect(h->iofile, 0) < 0)
+ {
+ if (t_errno == TNODATA)
+ return 1;
+ return -1;
+ }
+ return 0;
+}
+
+int mosi_bind(COMSTACK h, void *address, int mode)
+{
+ int res;
+ struct t_bind bnd;
+
+ if (mode == CS_SERVER)
+ bnd.qlen = 3;
+ else
+ bnd.qlen = 0;
+ memcpy(&bnd.addr, address, sizeof(struct netbuf));
+ if ((res = u_bind(h->iofile, &bnd, 0)) < 0)
+ return -1;
+ h->state = CS_IDLE;
+ return 0;
+}
+
+int mosi_listen(COMSTACK h, char *addp, int *addrlen)
+{
+ int res;
+ mosi_state *st = h->private;
+
+ if (!(st->call = (struct t_call*) t_alloc(h->iofile, T_CALL_STR,
+ T_ALL)))
+ return -1;
+ if ((res = u_listen(h->iofile, st->call)) < 0)
+ {
+ if (t_errno == TNODATA)
+ return 1;
+ return -1;
+ }
+ h->state = CS_INCON;
+ return 0;
+}
+
+COMSTACK mosi_accept(COMSTACK h)
+{
+ COMSTACK new;
+ void *local;
+ struct mosi_state *st = h->private, *ns;
+ int flags = O_RDWR;
+
+ if (h->state != CS_INCON)
+ {
+ h->errno = CSOUTSTATE;
+ return 0;
+ }
+ if (!(new = malloc(sizeof(*new))))
+ return 0;
+ *new = *h;
+ if (!(new->private = ns = malloc(sizeof(*ns))))
+ return 0;
+ *ns = *st;
+ if (!h->blocking)
+ flags |= O_NONBLOCK;
+ if ((new->iofile = u_open_r(CO_MOSI_NAME, flags, &st->info, st->call)) < 0)
+ return 0;
+ if (!(local = mosi_strtoaddr("")))
+ return 0;
+ if (mosi_bind(new, local, CS_CLIENT) < 0) /* CS_CLIENT: qlen == 0 */
+ return 0;
+ memcpy(&st->call->addr, local, sizeof(st->call->addr));
+ if (u_accept(h->iofile, new->iofile, st->call) < 0)
+ {
+ mosi_close(new);
+ return 0;
+ }
+ return new;
+}
+
+#define CS_MOSI_BUFCHUNK 4096
+
+int mosi_get(COMSTACK h, char **buf, int *bufsize)
+{
+ int flags = 0, res;
+ mosi_state *ct = h->private;
+ int got;
+
+ do
+ {
+ if (!*bufsize)
+ {
+ if (!(*buf = malloc(*bufsize = CS_MOSI_BUFCHUNK)))
+ return -1;
+ }
+ else if (*bufsize - ct->hasread < CS_MOSI_BUFCHUNK)
+ if (!(*buf = realloc(*buf, *bufsize *= 2)))
+ return -1;
+
+ if ((res = u_rcv(h->iofile, *buf + ct->hasread, CS_MOSI_BUFCHUNK,
+ &flags)) <= 0)
+ {
+ if (t_errno == TNODATA)
+ return 1;
+ return -1;
+ }
+ ct->hasread += res;
+ }
+ while (flags & T_MORE);
+
+ /* all done. Reset hasread */
+ got = ct->hasread;
+ ct->hasread = 0;
+ return got;
+}
+
+int mosi_put(COMSTACK h, char *buf, int size)
+{
+ mosi_state *ct = h->private;
+ int res = u_snd(h->iofile, buf + ct->haswrit, size - ct->haswrit, 0);
+
+ if (res == size - ct->haswrit)
+ {
+ ct->haswrit = 0;
+ return 0;
+ }
+ else if (res < 0)
+ {
+ if (t_errno == TFLOW)
+ return 1;
+ return -1;
+ }
+ ct->haswrit += res;
+ return 1;
+}
+
+int mosi_close(COMSTACK h)
+{
+ free(h->private);
+ if (h->iofile >= 0)
+ u_close(h->iofile);
+ free(h);
+ return 0;
+}
projects / yaz-moved-to-github.git / blobdiff