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 #endif
  25
  26 #define _GNU_SOURCE
  27
  28 #ifdef HAVE_UNISTD_H
  29 #include <unistd.h>
  30 #endif
  31
  32 #ifdef HAVE_STRINGS_H
  33 #include <strings.h>
  34 #endif
  35
  36 #include <stdio.h>
  37 #include <stdarg.h>
  38 #include <string.h>
  39 #include <stdlib.h>
  40 #include <assert.h>
  41 #include <time.h>
  42 #include "slist.h"
  43 #include "libnfs-zdr.h"
  44 #include "libnfs.h"
  45 #include "libnfs-raw.h"
  46 #include "libnfs-private.h"
  47
  48 struct rpc_context *rpc_init_context(void)
  49 {
  50         struct rpc_context *rpc;
  51         static uint32_t salt = 0;
  52
  53         rpc = malloc(sizeof(struct rpc_context));
  54         if (rpc == NULL) {
  55                 return NULL;
  56         }
  57         memset(rpc, 0, sizeof(struct rpc_context));
  58
  59         rpc->magic = RPC_CONTEXT_MAGIC;
  60
  61         /* Allow 1M of data (for writes) and some */
  62         rpc->encodebuflen = 1024 * 1024 + 4096;
  63         rpc->encodebuf = malloc(rpc->encodebuflen);
  64         if (rpc->encodebuf == NULL) {
  65                 free(rpc);
  66                 return NULL;
  67         }
  68
  69         rpc->auth = authunix_create_default();
  70         if (rpc->auth == NULL) {
  71                 free(rpc->encodebuf);
  72                 free(rpc);
  73                 return NULL;
  74         }
  75         rpc->xid = salt + time(NULL) + getpid() << 16;
  76         salt += 0x01000000;
  77         rpc->fd = -1;
  78
  79         return rpc;
  80 }
  81
  82
  83 struct rpc_context *rpc_init_udp_context(void)
  84 {
  85         struct rpc_context *rpc;
  86
  87         rpc = rpc_init_context();
  88         if (rpc != NULL) {
  89                 rpc->is_udp = 1;
  90         }
  91
  92         return rpc;
  93 }
  94
  95 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  96 {
  97         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  98
  99         if (rpc->auth != NULL) {
 100                 auth_destroy(rpc->auth);
 101         }
 102         rpc->auth = auth;
 103 }
 104
 105
 106 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 107 {
 108         va_list ap;
 109
 110         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 111
 112         if (rpc->error_string != NULL) {
 113                 free(rpc->error_string);
 114         }
 115         va_start(ap, error_string);
 116         rpc->error_string = malloc(1024);
 117         vsnprintf(rpc->error_string, 1024, error_string, ap);
 118         va_end(ap);
 119 }
 120
 121 char *rpc_get_error(struct rpc_context *rpc)
 122 {
 123         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 124
 125         return rpc->error_string;
 126 }
 127
 128 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 129 {
 130         struct rpc_pdu *pdu;
 131
 132         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 133
 134         while((pdu = rpc->outqueue) != NULL) {
 135                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 136                 SLIST_REMOVE(&rpc->outqueue, pdu);
 137                 rpc_free_pdu(rpc, pdu);
 138         }
 139         while((pdu = rpc->waitpdu) != NULL) {
 140                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 141                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 142                 rpc_free_pdu(rpc, pdu);
 143         }
 144 }
 145
 146 static void rpc_free_fragment(struct rpc_fragment *fragment)
 147 {
 148         if (fragment->data != NULL) {
 149                 free(fragment->data);
 150         }
 151         free(fragment);
 152 }
 153
 154 void rpc_free_all_fragments(struct rpc_context *rpc)
 155 {
 156         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 157
 158         while (rpc->fragments != NULL) {
 159               struct rpc_fragment *fragment = rpc->fragments;
 160
 161               SLIST_REMOVE(&rpc->fragments, fragment);
 162               rpc_free_fragment(fragment);
 163         }
 164 }
 165
 166 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 167 {
 168         struct rpc_fragment *fragment;
 169
 170         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 171
 172         fragment = malloc(sizeof(struct rpc_fragment));
 173         if (fragment == NULL) {
 174                 return -1;
 175         }
 176
 177         fragment->size = size;
 178         fragment->data = malloc(fragment->size);
 179         if(fragment->data == NULL) {
 180                 free(fragment);
 181                 return -1;
 182         }
 183
 184         memcpy(fragment->data, data, fragment->size);
 185         SLIST_ADD_END(&rpc->fragments, fragment);
 186         return 0;
 187 }
 188
 189 void rpc_destroy_context(struct rpc_context *rpc)
 190 {
 191         struct rpc_pdu *pdu;
 192
 193         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 194
 195         while((pdu = rpc->outqueue) != NULL) {
 196                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 197                 SLIST_REMOVE(&rpc->outqueue, pdu);
 198                 rpc_free_pdu(rpc, pdu);
 199         }
 200         while((pdu = rpc->waitpdu) != NULL) {
 201                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 202                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 203                 rpc_free_pdu(rpc, pdu);
 204         }
 205
 206         rpc_free_all_fragments(rpc);
 207
 208         auth_destroy(rpc->auth);
 209         rpc->auth =NULL;
 210
 211         if (rpc->fd != -1) {
 212                 close(rpc->fd);
 213         }
 214
 215         if (rpc->encodebuf != NULL) {
 216                 free(rpc->encodebuf);
 217                 rpc->encodebuf = NULL;
 218         }
 219
 220         if (rpc->error_string != NULL) {
 221                 free(rpc->error_string);
 222                 rpc->error_string = NULL;
 223         }
 224
 225         if (rpc->udp_dest != NULL) {
 226                 free(rpc->udp_dest);
 227                 rpc->udp_dest = NULL;
 228         }
 229
 230         rpc->magic = 0;
 231         free(rpc);
 232 }
 233
 234