lib/init.c

   1 /*
   2    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
   3
   4
   5
   6    This program is distributed in the hope that it will be useful,
   7    but WITHOUT ANY WARRANTY; without even the implied warranty of
   8    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9    GNU Lesser General Public License for more details.
  10
  11    You should have received a copy of the GNU Lesser General Public License
  12    along with this program; if not, see <http://www.gnu.org/licenses/>.
  13 */
  14
  15 #define _GNU_SOURCE
  16
  17 #if defined(WIN32)
  18 #include <winsock2.h>
  19 #else
  20 #include <unistd.h>
  21 #include <strings.h>
  22 #endif
  23
  24 #include <stdio.h>
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <rpc/rpc.h>
  29 #include <rpc/xdr.h>
  30 #include "slist.h"
  31 #include "libnfs.h"
  32 #include "libnfs-raw.h"
  33 #include "libnfs-private.h"
  34
  35 struct rpc_context *rpc_init_context(void)
  36 {
  37         struct rpc_context *rpc;
  38
  39         rpc = malloc(sizeof(struct rpc_context));
  40         if (rpc == NULL) {
  41                 return NULL;
  42         }
  43         bzero(rpc, sizeof(struct rpc_context));
  44
  45         rpc->encodebuflen = 65536;
  46         rpc->encodebuf = malloc(rpc->encodebuflen);
  47         if (rpc->encodebuf == NULL) {
  48                 free(rpc);
  49                 return NULL;
  50         }
  51
  52 #if defined(WIN32)
  53         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  54 #else
  55         rpc->auth = authunix_create_default();
  56 #endif
  57         if (rpc->auth == NULL) {
  58                 free(rpc->encodebuf);
  59                 free(rpc);
  60                 return NULL;
  61         }
  62         rpc->xid = 1;
  63         rpc->fd = -1;
  64
  65         return rpc;
  66 }
  67
  68
  69 struct rpc_context *rpc_init_udp_context(void)
  70 {
  71         struct rpc_context *rpc;
  72
  73         rpc = rpc_init_context();
  74         if (rpc != NULL) {
  75                 rpc->is_udp = 1;
  76         }
  77
  78         return rpc;
  79 }
  80
  81 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  82 {
  83         if (rpc->auth != NULL) {
  84                 auth_destroy(rpc->auth);
  85         }
  86         rpc->auth = auth;
  87 }
  88
  89
  90 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  91 {
  92         va_list ap;
  93         char *str;
  94
  95         if (rpc->error_string != NULL) {
  96                 free(rpc->error_string);
  97         }
  98         va_start(ap, error_string);
  99 #if defined (WIN32)
 100         str = malloc(1024);
 101         vsnprintf(str, 1024, error_string, ap);
 102 #else
 103         vasprintf(&str, error_string, ap);
 104 #endif
 105         rpc->error_string = str;
 106         va_end(ap);
 107 }
 108
 109 char *rpc_get_error(struct rpc_context *rpc)
 110 {
 111         return rpc->error_string;
 112 }
 113
 114 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 115 {
 116         struct rpc_pdu *pdu;
 117
 118         while((pdu = rpc->outqueue) != NULL) {
 119                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 120                 SLIST_REMOVE(&rpc->outqueue, pdu);
 121                 rpc_free_pdu(rpc, pdu);
 122         }
 123         while((pdu = rpc->waitpdu) != NULL) {
 124                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 125                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 126                 rpc_free_pdu(rpc, pdu);
 127         }
 128 }
 129
 130
 131 void rpc_destroy_context(struct rpc_context *rpc)
 132 {
 133         struct rpc_pdu *pdu;
 134
 135         while((pdu = rpc->outqueue) != NULL) {
 136                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 137                 SLIST_REMOVE(&rpc->outqueue, pdu);
 138                 rpc_free_pdu(rpc, pdu);
 139         }
 140         while((pdu = rpc->waitpdu) != NULL) {
 141                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 142                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 143                 rpc_free_pdu(rpc, pdu);
 144         }
 145
 146         auth_destroy(rpc->auth);
 147         rpc->auth =NULL;
 148
 149         if (rpc->fd != -1) {
 150 #if defined(WIN32)
 151                 closesocket(rpc->fd);
 152 #else
 153                 close(rpc->fd);
 154 #endif
 155         }
 156
 157         if (rpc->encodebuf != NULL) {
 158                 free(rpc->encodebuf);
 159                 rpc->encodebuf = NULL;
 160         }
 161
 162         if (rpc->error_string != NULL) {
 163                 free(rpc->error_string);
 164                 rpc->error_string = NULL;
 165         }
 166
 167         if (rpc->udp_dest != NULL) {
 168                 free(rpc->udp_dest);
 169                 rpc->udp_dest = NULL;
 170         }
 171
 172         free(rpc);
 173 }
 174
 175