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 <assert.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         memset(rpc, 0, sizeof(struct rpc_context));
  44
  45         rpc->magic = RPC_CONTEXT_MAGIC;
  46         rpc->encodebuflen = 65536;
  47         rpc->encodebuf = malloc(rpc->encodebuflen);
  48         if (rpc->encodebuf == NULL) {
  49                 free(rpc);
  50                 return NULL;
  51         }
  52
  53 #if defined(WIN32)
  54         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  55 #else
  56         rpc->auth = authunix_create_default();
  57 #endif
  58         if (rpc->auth == NULL) {
  59                 free(rpc->encodebuf);
  60                 free(rpc);
  61                 return NULL;
  62         }
  63         rpc->xid = 1;
  64         rpc->fd = -1;
  65
  66         return rpc;
  67 }
  68
  69
  70 struct rpc_context *rpc_init_udp_context(void)
  71 {
  72         struct rpc_context *rpc;
  73
  74         rpc = rpc_init_context();
  75         if (rpc != NULL) {
  76                 rpc->is_udp = 1;
  77         }
  78
  79         return rpc;
  80 }
  81
  82 void rpc_set_auth(struct rpc_context *rpc, AUTH *auth)
  83 {
  84         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  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
  97         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  98
  99         if (rpc->error_string != NULL) {
 100                 free(rpc->error_string);
 101         }
 102         va_start(ap, error_string);
 103         rpc->error_string = malloc(1024);
 104         vsnprintf(rpc->error_string, 1024, error_string, ap);
 105         va_end(ap);
 106 }
 107
 108 char *rpc_get_error(struct rpc_context *rpc)
 109 {
 110         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 111
 112         return rpc->error_string;
 113 }
 114
 115 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 116 {
 117         struct rpc_pdu *pdu;
 118
 119         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 120
 121         while((pdu = rpc->outqueue) != NULL) {
 122                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 123                 SLIST_REMOVE(&rpc->outqueue, pdu);
 124                 rpc_free_pdu(rpc, pdu);
 125         }
 126         while((pdu = rpc->waitpdu) != NULL) {
 127                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 128                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 129                 rpc_free_pdu(rpc, pdu);
 130         }
 131 }
 132
 133 static void rpc_free_fragment(struct rpc_fragment *fragment)
 134 {
 135         if (fragment->data != NULL) {
 136                 free(fragment->data);
 137         }
 138         free(fragment);
 139 }
 140
 141 void rpc_free_all_fragments(struct rpc_context *rpc)
 142 {
 143         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 144
 145         while (rpc->fragments != NULL) {
 146               struct rpc_fragment *fragment = rpc->fragments;
 147
 148               SLIST_REMOVE(&rpc->fragments, fragment);
 149               rpc_free_fragment(fragment);
 150         }
 151 }
 152
 153 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 154 {
 155         struct rpc_fragment *fragment;
 156
 157         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 158
 159         fragment = malloc(sizeof(struct rpc_fragment));
 160         if (fragment == NULL) {
 161                 return -1;
 162         }
 163
 164         fragment->size = size;
 165         fragment->data = malloc(fragment->size);
 166         if(fragment->data == NULL) {
 167                 free(fragment);
 168                 return -1;
 169         }
 170
 171         memcpy(fragment->data, data, fragment->size);
 172         SLIST_ADD_END(&rpc->fragments, fragment);
 173         return 0;
 174 }
 175
 176 void rpc_destroy_context(struct rpc_context *rpc)
 177 {
 178         struct rpc_pdu *pdu;
 179
 180         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 181
 182         while((pdu = rpc->outqueue) != NULL) {
 183                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 184                 SLIST_REMOVE(&rpc->outqueue, pdu);
 185                 rpc_free_pdu(rpc, pdu);
 186         }
 187         while((pdu = rpc->waitpdu) != NULL) {
 188                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 189                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 190                 rpc_free_pdu(rpc, pdu);
 191         }
 192
 193         rpc_free_all_fragments(rpc);
 194
 195         auth_destroy(rpc->auth);
 196         rpc->auth =NULL;
 197
 198         if (rpc->fd != -1) {
 199 #if defined(WIN32)
 200                 closesocket(rpc->fd);
 201 #else
 202                 close(rpc->fd);
 203 #endif
 204         }
 205
 206         if (rpc->encodebuf != NULL) {
 207                 free(rpc->encodebuf);
 208                 rpc->encodebuf = NULL;
 209         }
 210
 211         if (rpc->error_string != NULL) {
 212                 free(rpc->error_string);
 213                 rpc->error_string = NULL;
 214         }
 215
 216         if (rpc->udp_dest != NULL) {
 217                 free(rpc->udp_dest);
 218                 rpc->udp_dest = NULL;
 219         }
 220
 221         rpc->magic = 0;
 222         free(rpc);
 223 }
 224
 225