lib/init.c

   1 /*
   2    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as published by
   6    the Free Software Foundation; either version 2.1 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 #define _GNU_SOURCE
  19
  20 #if defined(WIN32)
  21 #include <winsock2.h>
  22 #else
  23 #include <unistd.h>
  24 #include <strings.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <stdarg.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <rpc/rpc.h>
  32 #include <rpc/xdr.h>
  33 #include "slist.h"
  34 #include "libnfs.h"
  35 #include "libnfs-raw.h"
  36 #include "libnfs-private.h"
  37
  38 struct rpc_context *rpc_init_context(void)
  39 {
  40         struct rpc_context *rpc;
  41
  42         rpc = malloc(sizeof(struct rpc_context));
  43         if (rpc == NULL) {
  44                 return NULL;
  45         }
  46         bzero(rpc, sizeof(struct rpc_context));
  47
  48         rpc->encodebuflen = 65536;
  49         rpc->encodebuf = malloc(rpc->encodebuflen);
  50         if (rpc->encodebuf == NULL) {
  51                 free(rpc);
  52                 return NULL;
  53         }
  54
  55 #if defined(WIN32)
  56         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  57 #else
  58         rpc->auth = authunix_create_default();
  59 #endif
  60         if (rpc->auth == NULL) {
  61                 free(rpc->encodebuf);
  62                 free(rpc);
  63                 return NULL;
  64         }
  65         rpc->xid = 1;
  66         rpc->fd = -1;
  67
  68         return rpc;
  69 }
  70
  71
  72 struct rpc_context *rpc_init_udp_context(void)
  73 {
  74         struct rpc_context *rpc;
  75
  76         rpc = rpc_init_context();
  77         if (rpc != NULL) {
  78                 rpc->is_udp = 1;
  79         }
  80
  81         return rpc;
  82 }
  83
  84 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  85 {
  86         if (rpc->auth != NULL) {
  87                 auth_destroy(rpc->auth);
  88         }
  89         rpc->auth = auth;
  90 }
  91
  92
  93 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  94 {
  95         va_list ap;
  96         char *str;
  97
  98         if (rpc->error_string != NULL) {
  99                 free(rpc->error_string);
 100         }
 101         va_start(ap, error_string);
 102         vasprintf(&str, error_string, ap);
 103         rpc->error_string = str;
 104         va_end(ap);
 105 }
 106
 107 char *rpc_get_error(struct rpc_context *rpc)
 108 {
 109         return rpc->error_string;
 110 }
 111
 112 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 113 {
 114         struct rpc_pdu *pdu;
 115
 116         while((pdu = rpc->outqueue) != NULL) {
 117                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 118                 SLIST_REMOVE(&rpc->outqueue, pdu);
 119                 rpc_free_pdu(rpc, pdu);
 120         }
 121         while((pdu = rpc->waitpdu) != NULL) {
 122                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 123                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 124                 rpc_free_pdu(rpc, pdu);
 125         }
 126 }
 127
 128
 129 void rpc_destroy_context(struct rpc_context *rpc)
 130 {
 131         struct rpc_pdu *pdu;
 132
 133         while((pdu = rpc->outqueue) != NULL) {
 134                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 135                 SLIST_REMOVE(&rpc->outqueue, pdu);
 136                 rpc_free_pdu(rpc, pdu);
 137         }
 138         while((pdu = rpc->waitpdu) != NULL) {
 139                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 140                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 141                 rpc_free_pdu(rpc, pdu);
 142         }
 143
 144         auth_destroy(rpc->auth);
 145         rpc->auth =NULL;
 146
 147         if (rpc->fd != -1) {
 148 #if defined(WIN32)
 149                 closesocket(rpc->fd);
 150 #else
 151                 close(rpc->fd);
 152 #endif
 153         }
 154
 155         if (rpc->encodebuf != NULL) {
 156                 free(rpc->encodebuf);
 157                 rpc->encodebuf = NULL;
 158         }
 159
 160         if (rpc->error_string != NULL) {
 161                 free(rpc->error_string);
 162                 rpc->error_string = NULL;
 163         }
 164
 165         if (rpc->udp_dest != NULL) {
 166                 free(rpc->udp_dest);
 167                 rpc->udp_dest = NULL;
 168         }
 169
 170         free(rpc);
 171 }
 172
 173