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         rpc->encodebuflen = 65536;
  61         rpc->encodebuf = malloc(rpc->encodebuflen);
  62         if (rpc->encodebuf == NULL) {
  63                 free(rpc);
  64                 return NULL;
  65         }
  66
  67         rpc->auth = authunix_create_default();
  68         if (rpc->auth == NULL) {
  69                 free(rpc->encodebuf);
  70                 free(rpc);
  71                 return NULL;
  72         }
  73         rpc->xid = salt + time(NULL);
  74         salt += 0x01000000;
  75         rpc->fd = -1;
  76
  77         return rpc;
  78 }
  79
  80
  81 struct rpc_context *rpc_init_udp_context(void)
  82 {
  83         struct rpc_context *rpc;
  84
  85         rpc = rpc_init_context();
  86         if (rpc != NULL) {
  87                 rpc->is_udp = 1;
  88         }
  89
  90         return rpc;
  91 }
  92
  93 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  94 {
  95         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  96
  97         if (rpc->auth != NULL) {
  98                 auth_destroy(rpc->auth);
  99         }
 100         rpc->auth = auth;
 101 }
 102
 103
 104 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 105 {
 106         va_list ap;
 107
 108         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 109
 110         if (rpc->error_string != NULL) {
 111                 free(rpc->error_string);
 112         }
 113         va_start(ap, error_string);
 114         rpc->error_string = malloc(1024);
 115         vsnprintf(rpc->error_string, 1024, error_string, ap);
 116         va_end(ap);
 117 }
 118
 119 char *rpc_get_error(struct rpc_context *rpc)
 120 {
 121         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 122
 123         return rpc->error_string;
 124 }
 125
 126 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 127 {
 128         struct rpc_pdu *pdu;
 129
 130         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 131
 132         while((pdu = rpc->outqueue) != NULL) {
 133                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 134                 SLIST_REMOVE(&rpc->outqueue, pdu);
 135                 rpc_free_pdu(rpc, pdu);
 136         }
 137         while((pdu = rpc->waitpdu) != NULL) {
 138                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 139                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 140                 rpc_free_pdu(rpc, pdu);
 141         }
 142 }
 143
 144 static void rpc_free_fragment(struct rpc_fragment *fragment)
 145 {
 146         if (fragment->data != NULL) {
 147                 free(fragment->data);
 148         }
 149         free(fragment);
 150 }
 151
 152 void rpc_free_all_fragments(struct rpc_context *rpc)
 153 {
 154         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 155
 156         while (rpc->fragments != NULL) {
 157               struct rpc_fragment *fragment = rpc->fragments;
 158
 159               SLIST_REMOVE(&rpc->fragments, fragment);
 160               rpc_free_fragment(fragment);
 161         }
 162 }
 163
 164 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 165 {
 166         struct rpc_fragment *fragment;
 167
 168         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 169
 170         fragment = malloc(sizeof(struct rpc_fragment));
 171         if (fragment == NULL) {
 172                 return -1;
 173         }
 174
 175         fragment->size = size;
 176         fragment->data = malloc(fragment->size);
 177         if(fragment->data == NULL) {
 178                 free(fragment);
 179                 return -1;
 180         }
 181
 182         memcpy(fragment->data, data, fragment->size);
 183         SLIST_ADD_END(&rpc->fragments, fragment);
 184         return 0;
 185 }
 186
 187 void rpc_destroy_context(struct rpc_context *rpc)
 188 {
 189         struct rpc_pdu *pdu;
 190
 191         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 192
 193         while((pdu = rpc->outqueue) != NULL) {
 194                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 195                 SLIST_REMOVE(&rpc->outqueue, pdu);
 196                 rpc_free_pdu(rpc, pdu);
 197         }
 198         while((pdu = rpc->waitpdu) != NULL) {
 199                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 200                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 201                 rpc_free_pdu(rpc, pdu);
 202         }
 203
 204         rpc_free_all_fragments(rpc);
 205
 206         auth_destroy(rpc->auth);
 207         rpc->auth =NULL;
 208
 209         if (rpc->fd != -1) {
 210                 close(rpc->fd);
 211         }
 212
 213         if (rpc->encodebuf != NULL) {
 214                 free(rpc->encodebuf);
 215                 rpc->encodebuf = NULL;
 216         }
 217
 218         if (rpc->error_string != NULL) {
 219                 free(rpc->error_string);
 220                 rpc->error_string = NULL;
 221         }
 222
 223         if (rpc->udp_dest != NULL) {
 224                 free(rpc->udp_dest);
 225                 rpc->udp_dest = NULL;
 226         }
 227
 228         rpc->magic = 0;
 229         free(rpc);
 230 }
 231
 232