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 #define close closesocket
  18 #else
  19 #include <unistd.h>
  20 #include <strings.h>
  21 #endif/*WIN32*/
  22 #define _GNU_SOURCE
  23
  24 #include <stdio.h>
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <assert.h>
  29 #include <time.h>
  30 #include "slist.h"
  31 #include "libnfs-zdr.h"
  32 #include "libnfs.h"
  33 #include "libnfs-raw.h"
  34 #include "libnfs-private.h"
  35
  36 #ifdef AROS
  37 #include "aros_compat.h"
  38 #endif
  39
  40 struct rpc_context *rpc_init_context(void)
  41 {
  42         struct rpc_context *rpc;
  43         static uint32_t salt = 0;
  44
  45         rpc = malloc(sizeof(struct rpc_context));
  46         if (rpc == NULL) {
  47                 return NULL;
  48         }
  49         memset(rpc, 0, sizeof(struct rpc_context));
  50
  51         rpc->magic = RPC_CONTEXT_MAGIC;
  52         rpc->encodebuflen = 65536;
  53         rpc->encodebuf = malloc(rpc->encodebuflen);
  54         if (rpc->encodebuf == NULL) {
  55                 free(rpc);
  56                 return NULL;
  57         }
  58
  59 #if defined(WIN32)
  60         rpc->auth = authunix_create("LibNFS", 65535, 65535, 0, NULL);
  61 #else
  62         rpc->auth = authunix_create_default();
  63 #endif
  64         if (rpc->auth == NULL) {
  65                 free(rpc->encodebuf);
  66                 free(rpc);
  67                 return NULL;
  68         }
  69         rpc->xid = salt + time(NULL);
  70         salt += 0x01000000;
  71         rpc->fd = -1;
  72
  73         return rpc;
  74 }
  75
  76
  77 struct rpc_context *rpc_init_udp_context(void)
  78 {
  79         struct rpc_context *rpc;
  80
  81         rpc = rpc_init_context();
  82         if (rpc != NULL) {
  83                 rpc->is_udp = 1;
  84         }
  85
  86         return rpc;
  87 }
  88
  89 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  90 {
  91         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  92
  93         if (rpc->auth != NULL) {
  94                 auth_destroy(rpc->auth);
  95         }
  96         rpc->auth = auth;
  97 }
  98
  99
 100 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 101 {
 102         va_list ap;
 103
 104         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 105
 106         if (rpc->error_string != NULL) {
 107                 free(rpc->error_string);
 108         }
 109         va_start(ap, error_string);
 110         rpc->error_string = malloc(1024);
 111         vsnprintf(rpc->error_string, 1024, error_string, ap);
 112         va_end(ap);
 113 }
 114
 115 char *rpc_get_error(struct rpc_context *rpc)
 116 {
 117         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 118
 119         return rpc->error_string;
 120 }
 121
 122 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 123 {
 124         struct rpc_pdu *pdu;
 125
 126         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 127
 128         while((pdu = rpc->outqueue) != NULL) {
 129                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 130                 SLIST_REMOVE(&rpc->outqueue, pdu);
 131                 rpc_free_pdu(rpc, pdu);
 132         }
 133         while((pdu = rpc->waitpdu) != NULL) {
 134                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 135                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 136                 rpc_free_pdu(rpc, pdu);
 137         }
 138 }
 139
 140 static void rpc_free_fragment(struct rpc_fragment *fragment)
 141 {
 142         if (fragment->data != NULL) {
 143                 free(fragment->data);
 144         }
 145         free(fragment);
 146 }
 147
 148 void rpc_free_all_fragments(struct rpc_context *rpc)
 149 {
 150         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 151
 152         while (rpc->fragments != NULL) {
 153               struct rpc_fragment *fragment = rpc->fragments;
 154
 155               SLIST_REMOVE(&rpc->fragments, fragment);
 156               rpc_free_fragment(fragment);
 157         }
 158 }
 159
 160 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 161 {
 162         struct rpc_fragment *fragment;
 163
 164         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 165
 166         fragment = malloc(sizeof(struct rpc_fragment));
 167         if (fragment == NULL) {
 168                 return -1;
 169         }
 170
 171         fragment->size = size;
 172         fragment->data = malloc(fragment->size);
 173         if(fragment->data == NULL) {
 174                 free(fragment);
 175                 return -1;
 176         }
 177
 178         memcpy(fragment->data, data, fragment->size);
 179         SLIST_ADD_END(&rpc->fragments, fragment);
 180         return 0;
 181 }
 182
 183 void rpc_destroy_context(struct rpc_context *rpc)
 184 {
 185         struct rpc_pdu *pdu;
 186
 187         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 188
 189         while((pdu = rpc->outqueue) != NULL) {
 190                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 191                 SLIST_REMOVE(&rpc->outqueue, pdu);
 192                 rpc_free_pdu(rpc, pdu);
 193         }
 194         while((pdu = rpc->waitpdu) != NULL) {
 195                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 196                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 197                 rpc_free_pdu(rpc, pdu);
 198         }
 199
 200         rpc_free_all_fragments(rpc);
 201
 202         auth_destroy(rpc->auth);
 203         rpc->auth =NULL;
 204
 205         if (rpc->fd != -1) {
 206                 close(rpc->fd);
 207         }
 208
 209         if (rpc->encodebuf != NULL) {
 210                 free(rpc->encodebuf);
 211                 rpc->encodebuf = NULL;
 212         }
 213
 214         if (rpc->error_string != NULL) {
 215                 free(rpc->error_string);
 216                 rpc->error_string = NULL;
 217         }
 218
 219         if (rpc->udp_dest != NULL) {
 220                 free(rpc->udp_dest);
 221                 rpc->udp_dest = NULL;
 222         }
 223
 224         rpc->magic = 0;
 225         free(rpc);
 226 }
 227
 228