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) + getpid() << 16;
  74         salt += 0x01000000;
  75         rpc->fd = -1;
  76         rpc->tcp_syncnt = RPC_PARAM_UNDEFINED;
  77
  78         return rpc;
  79 }
  80
  81
  82 struct rpc_context *rpc_init_udp_context(void)
  83 {
  84         struct rpc_context *rpc;
  85
  86         rpc = rpc_init_context();
  87         if (rpc != NULL) {
  88                 rpc->is_udp = 1;
  89         }
  90
  91         return rpc;
  92 }
  93
  94 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  95 {
  96         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  97
  98         if (rpc->auth != NULL) {
  99                 auth_destroy(rpc->auth);
 100         }
 101         rpc->auth = auth;
 102 }
 103
 104
 105 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 106 {
 107         va_list ap;
 108
 109         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 110
 111         if (rpc->error_string != NULL) {
 112                 free(rpc->error_string);
 113         }
 114         va_start(ap, error_string);
 115         rpc->error_string = malloc(1024);
 116         vsnprintf(rpc->error_string, 1024, error_string, ap);
 117         va_end(ap);
 118 }
 119
 120 char *rpc_get_error(struct rpc_context *rpc)
 121 {
 122         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 123
 124         return rpc->error_string;
 125 }
 126
 127 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 128 {
 129         struct rpc_pdu *pdu;
 130
 131         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 132
 133         while((pdu = rpc->outqueue) != NULL) {
 134                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 135                 SLIST_REMOVE(&rpc->outqueue, pdu);
 136                 rpc_free_pdu(rpc, pdu);
 137         }
 138         while((pdu = rpc->waitpdu) != NULL) {
 139                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 140                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 141                 rpc_free_pdu(rpc, pdu);
 142         }
 143 }
 144
 145 static void rpc_free_fragment(struct rpc_fragment *fragment)
 146 {
 147         if (fragment->data != NULL) {
 148                 free(fragment->data);
 149         }
 150         free(fragment);
 151 }
 152
 153 void rpc_free_all_fragments(struct rpc_context *rpc)
 154 {
 155         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 156
 157         while (rpc->fragments != NULL) {
 158               struct rpc_fragment *fragment = rpc->fragments;
 159
 160               SLIST_REMOVE(&rpc->fragments, fragment);
 161               rpc_free_fragment(fragment);
 162         }
 163 }
 164
 165 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 166 {
 167         struct rpc_fragment *fragment;
 168
 169         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 170
 171         fragment = malloc(sizeof(struct rpc_fragment));
 172         if (fragment == NULL) {
 173                 return -1;
 174         }
 175
 176         fragment->size = size;
 177         fragment->data = malloc(fragment->size);
 178         if(fragment->data == NULL) {
 179                 free(fragment);
 180                 return -1;
 181         }
 182
 183         memcpy(fragment->data, data, fragment->size);
 184         SLIST_ADD_END(&rpc->fragments, fragment);
 185         return 0;
 186 }
 187
 188 void rpc_destroy_context(struct rpc_context *rpc)
 189 {
 190         struct rpc_pdu *pdu;
 191
 192         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 193
 194         while((pdu = rpc->outqueue) != NULL) {
 195                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 196                 SLIST_REMOVE(&rpc->outqueue, pdu);
 197                 rpc_free_pdu(rpc, pdu);
 198         }
 199         while((pdu = rpc->waitpdu) != NULL) {
 200                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 201                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 202                 rpc_free_pdu(rpc, pdu);
 203         }
 204
 205         rpc_free_all_fragments(rpc);
 206
 207         auth_destroy(rpc->auth);
 208         rpc->auth =NULL;
 209
 210         if (rpc->fd != -1) {
 211                 close(rpc->fd);
 212         }
 213
 214         if (rpc->encodebuf != NULL) {
 215                 free(rpc->encodebuf);
 216                 rpc->encodebuf = NULL;
 217         }
 218
 219         if (rpc->error_string != NULL) {
 220                 free(rpc->error_string);
 221                 rpc->error_string = NULL;
 222         }
 223
 224         if (rpc->udp_dest != NULL) {
 225                 free(rpc->udp_dest);
 226                 rpc->udp_dest = NULL;
 227         }
 228
 229         rpc->magic = 0;
 230         free(rpc);
 231 }
 232
 233