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 #ifdef HAVE_CONFIG_H
  15 #include "config.h"
  16 #endif
  17
  18 #ifdef AROS
  19 #include "aros_compat.h"
  20 #endif
  21
  22 #ifdef WIN32
  23 #include "win32_compat.h"
  24 #else
  25 #include <strings.h>
  26 #endif/*WIN32*/
  27 #define _GNU_SOURCE
  28
  29 #ifdef HAVE_UNISTD_H
  30 #include <unistd.h>
  31 #endif
  32
  33 #include <stdio.h>
  34 #include <stdarg.h>
  35 #include <string.h>
  36 #include <stdlib.h>
  37 #include <assert.h>
  38 #include <time.h>
  39 #include "slist.h"
  40 #include "libnfs-zdr.h"
  41 #include "libnfs.h"
  42 #include "libnfs-raw.h"
  43 #include "libnfs-private.h"
  44
  45 struct rpc_context *rpc_init_context(void)
  46 {
  47         struct rpc_context *rpc;
  48         static uint32_t salt = 0;
  49
  50         rpc = malloc(sizeof(struct rpc_context));
  51         if (rpc == NULL) {
  52                 return NULL;
  53         }
  54         memset(rpc, 0, sizeof(struct rpc_context));
  55
  56         rpc->magic = RPC_CONTEXT_MAGIC;
  57         rpc->encodebuflen = 65536;
  58         rpc->encodebuf = malloc(rpc->encodebuflen);
  59         if (rpc->encodebuf == NULL) {
  60                 free(rpc);
  61                 return NULL;
  62         }
  63
  64         rpc->auth = authunix_create_default();
  65         if (rpc->auth == NULL) {
  66                 free(rpc->encodebuf);
  67                 free(rpc);
  68                 return NULL;
  69         }
  70         rpc->xid = salt + time(NULL);
  71         salt += 0x01000000;
  72         rpc->fd = -1;
  73
  74         return rpc;
  75 }
  76
  77
  78 struct rpc_context *rpc_init_udp_context(void)
  79 {
  80         struct rpc_context *rpc;
  81
  82         rpc = rpc_init_context();
  83         if (rpc != NULL) {
  84                 rpc->is_udp = 1;
  85         }
  86
  87         return rpc;
  88 }
  89
  90 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  91 {
  92         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  93
  94         if (rpc->auth != NULL) {
  95                 auth_destroy(rpc->auth);
  96         }
  97         rpc->auth = auth;
  98 }
  99
 100
 101 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 102 {
 103         va_list ap;
 104
 105         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 106
 107         if (rpc->error_string != NULL) {
 108                 free(rpc->error_string);
 109         }
 110         va_start(ap, error_string);
 111         rpc->error_string = malloc(1024);
 112         vsnprintf(rpc->error_string, 1024, error_string, ap);
 113         va_end(ap);
 114 }
 115
 116 char *rpc_get_error(struct rpc_context *rpc)
 117 {
 118         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 119
 120         return rpc->error_string;
 121 }
 122
 123 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 124 {
 125         struct rpc_pdu *pdu;
 126
 127         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 128
 129         while((pdu = rpc->outqueue) != NULL) {
 130                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 131                 SLIST_REMOVE(&rpc->outqueue, pdu);
 132                 rpc_free_pdu(rpc, pdu);
 133         }
 134         while((pdu = rpc->waitpdu) != NULL) {
 135                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 136                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 137                 rpc_free_pdu(rpc, pdu);
 138         }
 139 }
 140
 141 static void rpc_free_fragment(struct rpc_fragment *fragment)
 142 {
 143         if (fragment->data != NULL) {
 144                 free(fragment->data);
 145         }
 146         free(fragment);
 147 }
 148
 149 void rpc_free_all_fragments(struct rpc_context *rpc)
 150 {
 151         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 152
 153         while (rpc->fragments != NULL) {
 154               struct rpc_fragment *fragment = rpc->fragments;
 155
 156               SLIST_REMOVE(&rpc->fragments, fragment);
 157               rpc_free_fragment(fragment);
 158         }
 159 }
 160
 161 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 162 {
 163         struct rpc_fragment *fragment;
 164
 165         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 166
 167         fragment = malloc(sizeof(struct rpc_fragment));
 168         if (fragment == NULL) {
 169                 return -1;
 170         }
 171
 172         fragment->size = size;
 173         fragment->data = malloc(fragment->size);
 174         if(fragment->data == NULL) {
 175                 free(fragment);
 176                 return -1;
 177         }
 178
 179         memcpy(fragment->data, data, fragment->size);
 180         SLIST_ADD_END(&rpc->fragments, fragment);
 181         return 0;
 182 }
 183
 184 void rpc_destroy_context(struct rpc_context *rpc)
 185 {
 186         struct rpc_pdu *pdu;
 187
 188         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 189
 190         while((pdu = rpc->outqueue) != NULL) {
 191                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 192                 SLIST_REMOVE(&rpc->outqueue, pdu);
 193                 rpc_free_pdu(rpc, pdu);
 194         }
 195         while((pdu = rpc->waitpdu) != NULL) {
 196                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 197                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 198                 rpc_free_pdu(rpc, pdu);
 199         }
 200
 201         rpc_free_all_fragments(rpc);
 202
 203         auth_destroy(rpc->auth);
 204         rpc->auth =NULL;
 205
 206         if (rpc->fd != -1) {
 207                 close(rpc->fd);
 208         }
 209
 210         if (rpc->encodebuf != NULL) {
 211                 free(rpc->encodebuf);
 212                 rpc->encodebuf = NULL;
 213         }
 214
 215         if (rpc->error_string != NULL) {
 216                 free(rpc->error_string);
 217                 rpc->error_string = NULL;
 218         }
 219
 220         if (rpc->udp_dest != NULL) {
 221                 free(rpc->udp_dest);
 222                 rpc->udp_dest = NULL;
 223         }
 224
 225         rpc->magic = 0;
 226         free(rpc);
 227 }
 228
 229