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 #ifdef WIN32
  78         rpc->uid = 65534;
  79         rpc->gid = 65534;
  80 #else
  81         rpc->uid = getuid();
  82         rpc->gid = getgid();
  83 #endif
  84
  85         return rpc;
  86 }
  87
  88
  89 struct rpc_context *rpc_init_udp_context(void)
  90 {
  91         struct rpc_context *rpc;
  92
  93         rpc = rpc_init_context();
  94         if (rpc != NULL) {
  95                 rpc->is_udp = 1;
  96         }
  97
  98         return rpc;
  99 }
 100
 101 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
 102 {
 103         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 104
 105         if (rpc->auth != NULL) {
 106                 auth_destroy(rpc->auth);
 107         }
 108         rpc->auth = auth;
 109 }
 110
 111 static void rpc_set_uid_gid(struct rpc_context *rpc, int uid, int gid) {
 112         if (uid != rpc->uid || gid != rpc->gid) {
 113                 struct AUTH *auth = libnfs_authunix_create("libnfs", uid, gid, 0, NULL);
 114                 if (auth != NULL) {
 115                         rpc_set_auth(rpc, auth);
 116                         rpc->uid = uid;
 117                         rpc->gid = gid;
 118                 }
 119         }
 120 }
 121
 122 void rpc_set_uid(struct rpc_context *rpc, int uid) {
 123         rpc_set_uid_gid(rpc, uid, rpc->gid);
 124 }
 125
 126 void rpc_set_gid(struct rpc_context *rpc, int gid) {
 127         rpc_set_uid_gid(rpc, rpc->uid, gid);
 128 }
 129
 130 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 131 {
 132         va_list ap;
 133
 134         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 135
 136         if (rpc->error_string != NULL) {
 137                 free(rpc->error_string);
 138         }
 139         va_start(ap, error_string);
 140         rpc->error_string = malloc(1024);
 141         vsnprintf(rpc->error_string, 1024, error_string, ap);
 142         va_end(ap);
 143 }
 144
 145 char *rpc_get_error(struct rpc_context *rpc)
 146 {
 147         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 148
 149         return rpc->error_string;
 150 }
 151
 152 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 153 {
 154         struct rpc_pdu *pdu;
 155
 156         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 157
 158         while((pdu = rpc->outqueue) != NULL) {
 159                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 160                 SLIST_REMOVE(&rpc->outqueue, pdu);
 161                 rpc_free_pdu(rpc, pdu);
 162         }
 163         while((pdu = rpc->waitpdu) != NULL) {
 164                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 165                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 166                 rpc_free_pdu(rpc, pdu);
 167         }
 168 }
 169
 170 static void rpc_free_fragment(struct rpc_fragment *fragment)
 171 {
 172         if (fragment->data != NULL) {
 173                 free(fragment->data);
 174         }
 175         free(fragment);
 176 }
 177
 178 void rpc_free_all_fragments(struct rpc_context *rpc)
 179 {
 180         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 181
 182         while (rpc->fragments != NULL) {
 183               struct rpc_fragment *fragment = rpc->fragments;
 184
 185               SLIST_REMOVE(&rpc->fragments, fragment);
 186               rpc_free_fragment(fragment);
 187         }
 188 }
 189
 190 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size)
 191 {
 192         struct rpc_fragment *fragment;
 193
 194         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 195
 196         fragment = malloc(sizeof(struct rpc_fragment));
 197         if (fragment == NULL) {
 198                 return -1;
 199         }
 200
 201         fragment->size = size;
 202         fragment->data = malloc(fragment->size);
 203         if(fragment->data == NULL) {
 204                 free(fragment);
 205                 return -1;
 206         }
 207
 208         memcpy(fragment->data, data, fragment->size);
 209         SLIST_ADD_END(&rpc->fragments, fragment);
 210         return 0;
 211 }
 212
 213 void rpc_destroy_context(struct rpc_context *rpc)
 214 {
 215         struct rpc_pdu *pdu;
 216
 217         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 218
 219         while((pdu = rpc->outqueue) != NULL) {
 220                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 221                 SLIST_REMOVE(&rpc->outqueue, pdu);
 222                 rpc_free_pdu(rpc, pdu);
 223         }
 224         while((pdu = rpc->waitpdu) != NULL) {
 225                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 226                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 227                 rpc_free_pdu(rpc, pdu);
 228         }
 229
 230         rpc_free_all_fragments(rpc);
 231
 232         auth_destroy(rpc->auth);
 233         rpc->auth =NULL;
 234
 235         if (rpc->fd != -1) {
 236                 close(rpc->fd);
 237         }
 238
 239         if (rpc->encodebuf != NULL) {
 240                 free(rpc->encodebuf);
 241                 rpc->encodebuf = NULL;
 242         }
 243
 244         if (rpc->error_string != NULL) {
 245                 free(rpc->error_string);
 246                 rpc->error_string = NULL;
 247         }
 248
 249         if (rpc->udp_dest != NULL) {
 250                 free(rpc->udp_dest);
 251                 rpc->udp_dest = NULL;
 252         }
 253
 254         rpc->magic = 0;
 255         free(rpc);
 256 }
 257
 258