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 #ifdef WIN32
  16 #include "win32_compat.h"
  17 #else
  18 #include <unistd.h>
  19 #include <strings.h>
  20 #endif/*WIN32*/
  21 #define _GNU_SOURCE
  22
  23 #include <stdio.h>
  24 #include <stdarg.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27 #include <rpc/rpc.h>
  28 #include <rpc/xdr.h>
  29 #include "slist.h"
  30 #include "libnfs.h"
  31 #include "libnfs-raw.h"
  32 #include "libnfs-private.h"
  33
  34 struct rpc_context *rpc_init_context(void)
  35 {
  36         struct rpc_context *rpc;
  37
  38         rpc = malloc(sizeof(struct rpc_context));
  39         if (rpc == NULL) {
  40                 return NULL;
  41         }
  42         memset(rpc, 0, sizeof(struct rpc_context));
  43
  44         rpc->encodebuflen = 65536;
  45         rpc->encodebuf = malloc(rpc->encodebuflen);
  46         if (rpc->encodebuf == NULL) {
  47                 free(rpc);
  48                 return NULL;
  49         }
  50
  51 #if defined(WIN32)
  52         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  53 #else
  54         rpc->auth = authunix_create_default();
  55 #endif
  56         if (rpc->auth == NULL) {
  57                 free(rpc->encodebuf);
  58                 free(rpc);
  59                 return NULL;
  60         }
  61         rpc->xid = 1;
  62         rpc->fd = -1;
  63
  64         return rpc;
  65 }
  66
  67
  68 struct rpc_context *rpc_init_udp_context(void)
  69 {
  70         struct rpc_context *rpc;
  71
  72         rpc = rpc_init_context();
  73         if (rpc != NULL) {
  74                 rpc->is_udp = 1;
  75         }
  76
  77         return rpc;
  78 }
  79
  80 void rpc_set_auth(struct rpc_context *rpc, AUTH *auth)
  81 {
  82         if (rpc->auth != NULL) {
  83                 auth_destroy(rpc->auth);
  84         }
  85         rpc->auth = auth;
  86 }
  87
  88
  89 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  90 {
  91         va_list ap;
  92
  93         if (rpc->error_string != NULL) {
  94                 free(rpc->error_string);
  95         }
  96         va_start(ap, error_string);
  97         rpc->error_string = malloc(1024);
  98         vsnprintf(rpc->error_string, 1024, error_string, ap);
  99         va_end(ap);
 100 }
 101
 102 char *rpc_get_error(struct rpc_context *rpc)
 103 {
 104         return rpc->error_string;
 105 }
 106
 107 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 108 {
 109         struct rpc_pdu *pdu;
 110
 111         while((pdu = rpc->outqueue) != NULL) {
 112                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 113                 SLIST_REMOVE(&rpc->outqueue, pdu);
 114                 rpc_free_pdu(rpc, pdu);
 115         }
 116         while((pdu = rpc->waitpdu) != NULL) {
 117                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 118                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 119                 rpc_free_pdu(rpc, pdu);
 120         }
 121 }
 122
 123 static void rpc_free_fragment(struct rpc_fragment *fragment)
 124 {
 125         if (fragment->data != NULL) {
 126                 free(fragment->data);
 127         }
 128         free(fragment);
 129 }
 130
 131 void rpc_free_all_fragments(struct rpc_context *rpc)
 132 {
 133         while (rpc->fragments != NULL) {
 134               struct rpc_fragment *fragment = rpc->fragments;
 135
 136               SLIST_REMOVE(&rpc->fragments, fragment);
 137               rpc_free_fragment(fragment);
 138         }
 139 }
 140
 141 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 142 {
 143         struct rpc_fragment *fragment;
 144
 145         fragment = malloc(sizeof(struct rpc_fragment));
 146         if (fragment == NULL) {
 147                 return -1;
 148         }
 149
 150         fragment->size = size;
 151         fragment->data = malloc(fragment->size);
 152         if(fragment->data == NULL) {
 153                 free(fragment);
 154                 return -1;
 155         }
 156
 157         memcpy(fragment->data, data, fragment->size);
 158         SLIST_ADD_END(&rpc->fragments, fragment);
 159         return 0;
 160 }
 161
 162 void rpc_destroy_context(struct rpc_context *rpc)
 163 {
 164         struct rpc_pdu *pdu;
 165
 166         while((pdu = rpc->outqueue) != NULL) {
 167                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 168                 SLIST_REMOVE(&rpc->outqueue, pdu);
 169                 rpc_free_pdu(rpc, pdu);
 170         }
 171         while((pdu = rpc->waitpdu) != NULL) {
 172                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 173                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 174                 rpc_free_pdu(rpc, pdu);
 175         }
 176
 177         rpc_free_all_fragments(rpc);
 178
 179         auth_destroy(rpc->auth);
 180         rpc->auth =NULL;
 181
 182         if (rpc->fd != -1) {
 183 #if defined(WIN32)
 184                 closesocket(rpc->fd);
 185 #else
 186                 close(rpc->fd);
 187 #endif
 188         }
 189
 190         if (rpc->encodebuf != NULL) {
 191                 free(rpc->encodebuf);
 192                 rpc->encodebuf = NULL;
 193         }
 194
 195         if (rpc->error_string != NULL) {
 196                 free(rpc->error_string);
 197                 rpc->error_string = NULL;
 198         }
 199
 200         if (rpc->udp_dest != NULL) {
 201                 free(rpc->udp_dest);
 202                 rpc->udp_dest = NULL;
 203         }
 204
 205         free(rpc);
 206 }
 207
 208