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 <time.h>
  29 #include "slist.h"
  30 #include "libnfs-zdr.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         static uint32_t salt = 0;
  39
  40         rpc = malloc(sizeof(struct rpc_context));
  41         if (rpc == NULL) {
  42                 return NULL;
  43         }
  44         memset(rpc, 0, sizeof(struct rpc_context));
  45
  46         rpc->magic = RPC_CONTEXT_MAGIC;
  47         rpc->encodebuflen = 65536;
  48         rpc->encodebuf = malloc(rpc->encodebuflen);
  49         if (rpc->encodebuf == NULL) {
  50                 free(rpc);
  51                 return NULL;
  52         }
  53
  54 #if defined(WIN32)
  55         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  56 #else
  57         rpc->auth = authunix_create_default();
  58 #endif
  59         if (rpc->auth == NULL) {
  60                 free(rpc->encodebuf);
  61                 free(rpc);
  62                 return NULL;
  63         }
  64         rpc->xid = salt + time(NULL);
  65         salt += 0x01000000;
  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         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  87
  88         if (rpc->auth != NULL) {
  89                 auth_destroy(rpc->auth);
  90         }
  91         rpc->auth = auth;
  92 }
  93
  94
  95 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  96 {
  97         va_list ap;
  98
  99         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 100
 101         if (rpc->error_string != NULL) {
 102                 free(rpc->error_string);
 103         }
 104         va_start(ap, error_string);
 105         rpc->error_string = malloc(1024);
 106         vsnprintf(rpc->error_string, 1024, error_string, ap);
 107         va_end(ap);
 108 }
 109
 110 char *rpc_get_error(struct rpc_context *rpc)
 111 {
 112         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 113
 114         return rpc->error_string;
 115 }
 116
 117 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 118 {
 119         struct rpc_pdu *pdu;
 120
 121         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 122
 123         while((pdu = rpc->outqueue) != NULL) {
 124                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 125                 SLIST_REMOVE(&rpc->outqueue, pdu);
 126                 rpc_free_pdu(rpc, pdu);
 127         }
 128         while((pdu = rpc->waitpdu) != NULL) {
 129                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 130                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 131                 rpc_free_pdu(rpc, pdu);
 132         }
 133 }
 134
 135 static void rpc_free_fragment(struct rpc_fragment *fragment)
 136 {
 137         if (fragment->data != NULL) {
 138                 free(fragment->data);
 139         }
 140         free(fragment);
 141 }
 142
 143 void rpc_free_all_fragments(struct rpc_context *rpc)
 144 {
 145         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 146
 147         while (rpc->fragments != NULL) {
 148               struct rpc_fragment *fragment = rpc->fragments;
 149
 150               SLIST_REMOVE(&rpc->fragments, fragment);
 151               rpc_free_fragment(fragment);
 152         }
 153 }
 154
 155 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 156 {
 157         struct rpc_fragment *fragment;
 158
 159         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 160
 161         fragment = malloc(sizeof(struct rpc_fragment));
 162         if (fragment == NULL) {
 163                 return -1;
 164         }
 165
 166         fragment->size = size;
 167         fragment->data = malloc(fragment->size);
 168         if(fragment->data == NULL) {
 169                 free(fragment);
 170                 return -1;
 171         }
 172
 173         memcpy(fragment->data, data, fragment->size);
 174         SLIST_ADD_END(&rpc->fragments, fragment);
 175         return 0;
 176 }
 177
 178 void rpc_destroy_context(struct rpc_context *rpc)
 179 {
 180         struct rpc_pdu *pdu;
 181
 182         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 183
 184         while((pdu = rpc->outqueue) != NULL) {
 185                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 186                 SLIST_REMOVE(&rpc->outqueue, pdu);
 187                 rpc_free_pdu(rpc, pdu);
 188         }
 189         while((pdu = rpc->waitpdu) != NULL) {
 190                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 191                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 192                 rpc_free_pdu(rpc, pdu);
 193         }
 194
 195         rpc_free_all_fragments(rpc);
 196
 197         auth_destroy(rpc->auth);
 198         rpc->auth =NULL;
 199
 200         if (rpc->fd != -1) {
 201 #if defined(WIN32)
 202                 closesocket(rpc->fd);
 203 #else
 204                 close(rpc->fd);
 205 #endif
 206         }
 207
 208         if (rpc->encodebuf != NULL) {
 209                 free(rpc->encodebuf);
 210                 rpc->encodebuf = NULL;
 211         }
 212
 213         if (rpc->error_string != NULL) {
 214                 free(rpc->error_string);
 215                 rpc->error_string = NULL;
 216         }
 217
 218         if (rpc->udp_dest != NULL) {
 219                 free(rpc->udp_dest);
 220                 rpc->udp_dest = NULL;
 221         }
 222
 223         rpc->magic = 0;
 224         free(rpc);
 225 }
 226
 227