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 #ifdef AROS
  36 #include "aros_compat.h"
  37 #endif
  38
  39 struct rpc_context *rpc_init_context(void)
  40 {
  41         struct rpc_context *rpc;
  42         static uint32_t salt = 0;
  43
  44         rpc = malloc(sizeof(struct rpc_context));
  45         if (rpc == NULL) {
  46                 return NULL;
  47         }
  48         memset(rpc, 0, sizeof(struct rpc_context));
  49
  50         rpc->magic = RPC_CONTEXT_MAGIC;
  51         rpc->encodebuflen = 65536;
  52         rpc->encodebuf = malloc(rpc->encodebuflen);
  53         if (rpc->encodebuf == NULL) {
  54                 free(rpc);
  55                 return NULL;
  56         }
  57
  58 #if defined(WIN32)
  59         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  60 #else
  61         rpc->auth = authunix_create_default();
  62 #endif
  63         if (rpc->auth == NULL) {
  64                 free(rpc->encodebuf);
  65                 free(rpc);
  66                 return NULL;
  67         }
  68         rpc->xid = salt + time(NULL);
  69         salt += 0x01000000;
  70         rpc->fd = -1;
  71
  72         return rpc;
  73 }
  74
  75
  76 struct rpc_context *rpc_init_udp_context(void)
  77 {
  78         struct rpc_context *rpc;
  79
  80         rpc = rpc_init_context();
  81         if (rpc != NULL) {
  82                 rpc->is_udp = 1;
  83         }
  84
  85         return rpc;
  86 }
  87
  88 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  89 {
  90         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  91
  92         if (rpc->auth != NULL) {
  93                 auth_destroy(rpc->auth);
  94         }
  95         rpc->auth = auth;
  96 }
  97
  98
  99 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 100 {
 101         va_list ap;
 102
 103         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 104
 105         if (rpc->error_string != NULL) {
 106                 free(rpc->error_string);
 107         }
 108         va_start(ap, error_string);
 109         rpc->error_string = malloc(1024);
 110         vsnprintf(rpc->error_string, 1024, error_string, ap);
 111         va_end(ap);
 112 }
 113
 114 char *rpc_get_error(struct rpc_context *rpc)
 115 {
 116         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 117
 118         return rpc->error_string;
 119 }
 120
 121 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 122 {
 123         struct rpc_pdu *pdu;
 124
 125         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 126
 127         while((pdu = rpc->outqueue) != NULL) {
 128                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 129                 SLIST_REMOVE(&rpc->outqueue, pdu);
 130                 rpc_free_pdu(rpc, pdu);
 131         }
 132         while((pdu = rpc->waitpdu) != NULL) {
 133                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 134                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 135                 rpc_free_pdu(rpc, pdu);
 136         }
 137 }
 138
 139 static void rpc_free_fragment(struct rpc_fragment *fragment)
 140 {
 141         if (fragment->data != NULL) {
 142                 free(fragment->data);
 143         }
 144         free(fragment);
 145 }
 146
 147 void rpc_free_all_fragments(struct rpc_context *rpc)
 148 {
 149         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 150
 151         while (rpc->fragments != NULL) {
 152               struct rpc_fragment *fragment = rpc->fragments;
 153
 154               SLIST_REMOVE(&rpc->fragments, fragment);
 155               rpc_free_fragment(fragment);
 156         }
 157 }
 158
 159 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 160 {
 161         struct rpc_fragment *fragment;
 162
 163         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 164
 165         fragment = malloc(sizeof(struct rpc_fragment));
 166         if (fragment == NULL) {
 167                 return -1;
 168         }
 169
 170         fragment->size = size;
 171         fragment->data = malloc(fragment->size);
 172         if(fragment->data == NULL) {
 173                 free(fragment);
 174                 return -1;
 175         }
 176
 177         memcpy(fragment->data, data, fragment->size);
 178         SLIST_ADD_END(&rpc->fragments, fragment);
 179         return 0;
 180 }
 181
 182 void rpc_destroy_context(struct rpc_context *rpc)
 183 {
 184         struct rpc_pdu *pdu;
 185
 186         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 187
 188         while((pdu = rpc->outqueue) != NULL) {
 189                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 190                 SLIST_REMOVE(&rpc->outqueue, pdu);
 191                 rpc_free_pdu(rpc, pdu);
 192         }
 193         while((pdu = rpc->waitpdu) != NULL) {
 194                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 195                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 196                 rpc_free_pdu(rpc, pdu);
 197         }
 198
 199         rpc_free_all_fragments(rpc);
 200
 201         auth_destroy(rpc->auth);
 202         rpc->auth =NULL;
 203
 204         if (rpc->fd != -1) {
 205                 close(rpc->fd);
 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