DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla XULRunner.
 *
 * The Initial Developer of the Original Code is
 * Benjamin Smedberg <benjamin@smedbergs.us>.
 *
 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsRegisterGRE.h"
#include "nsXPCOMGlue.h"

#include "nsXPCOM.h"
#include "nsIFile.h"
#include "nsILocalFile.h"

#include "nsAppRunner.h" // for MAXPATHLEN
#include "nsStringAPI.h"
#include "nsINIParser.h"
#include "nsCOMPtr.h"

#include "prio.h"
#include "prprf.h"
#include "prenv.h"

#include <unistd.h>
#include <sys/stat.h>

// If we can't register <buildid>.conf, we try to create a unique filename
// by looping through <buildid>_<int>.conf, but if something is seriously wrong
// we stop at 1000
#define UNIQ_LOOP_LIMIT 1000

static const char kRegFileGlobal[] = "global.reginfo";
static const char kRegFileUser[] = "user.reginfo";

class AutoFDClose
{
public:
  AutoFDClose(PRFileDesc* fd = nsnull) : mFD(fd) { }
  ~AutoFDClose() { if (mFD) PR_Close(mFD); }

  PRFileDesc* operator= (PRFileDesc *fd) {
    if (mFD) PR_Close(mFD);
    mFD = fd;
    return fd;
  }

  operator PRFileDesc* () { return mFD; }
  PRFileDesc** operator &() { *this = nsnull; return &mFD; }

private:
  PRFileDesc *mFD;
};

static PRBool
MakeConfFile(const char *regfile, const nsCString &greHome,
             const GREProperty *aProperties, PRUint32 aPropertiesLen,
             const char *aGREMilestone)
{
  // If the file exists, don't create it again!
  if (access(regfile, R_OK) == 0)
    return PR_FALSE;

  PRBool ok = PR_TRUE;

  { // scope "fd" so that we can delete the file if something goes wrong
    AutoFDClose fd = PR_Open(regfile, PR_CREATE_FILE | PR_WRONLY | PR_TRUNCATE,
                             0664);
    if (!fd)
      return PR_FALSE;

    static const char kHeader[] =
      "# Registration file generated by xulrunner. Do not edit.\n\n"
      "[%s]\n"
      "GRE_PATH=%s\n";

    if (PR_fprintf(fd, kHeader, aGREMilestone, greHome.get()) <= 0)
      ok = PR_FALSE;

    for (PRUint32 i = 0; i < aPropertiesLen; ++i) {
      if (PR_fprintf(fd, "%s=%s\n",
                     aProperties[i].property, aProperties[i].value) <= 0)
        ok = PR_FALSE;
    }
  }

  if (!ok)
    PR_Delete(regfile);

  return ok;
}


PRBool
RegisterXULRunner(PRBool aRegisterGlobally, nsIFile* aLocation,
                  const GREProperty *aProperties, PRUint32 aPropertiesLen,
                  const char *aGREMilestone)
{
  // Register ourself in /etc/gre.d or ~/.gre.d/ and record what key we created
  // for future unregistration.

  nsresult rv;

  char root[MAXPATHLEN] = "/etc/gre.d";

  if (!aRegisterGlobally) {
    char *home = PR_GetEnv("HOME");
    if (!home || !*home)
      return PR_FALSE;

    PR_snprintf(root, MAXPATHLEN, "%s/.gre.d", home);
  }

  nsCString greHome;
  rv = aLocation->GetNativePath(greHome);
  if (NS_FAILED(rv))
    return rv;

  nsCOMPtr<nsIFile> savedInfoFile;
  aLocation->Clone(getter_AddRefs(savedInfoFile));
  nsCOMPtr<nsILocalFile> localSaved(do_QueryInterface(savedInfoFile));
  if (!localSaved)
    return PR_FALSE;

  const char *infoname = aRegisterGlobally ? kRegFileGlobal : kRegFileUser;
  localSaved->AppendNative(nsDependentCString(infoname));

  AutoFDClose fd;
  rv = localSaved->OpenNSPRFileDesc(PR_CREATE_FILE | PR_RDWR, 0664, &fd);
  // XXX report error?
  if (NS_FAILED(rv))
    return PR_FALSE;

  char keyName[MAXPATHLEN];

  PRInt32 r = PR_Read(fd, keyName, MAXPATHLEN);
  if (r < 0)
    return PR_FALSE;

  char regfile[MAXPATHLEN];

  if (r > 0) {
    keyName[r] = '\0';

    PR_snprintf(regfile, MAXPATHLEN, "%s/%s.conf", root, keyName);

    // There was already a .reginfo file, let's see if we are already
    // registered.
    if (access(regfile, R_OK) == 0) {
      fprintf(stderr, "Warning: Configuration file '%s' already exists.\n"
                      "No action was performed.\n", regfile);
      return PR_FALSE;
    }

    rv = localSaved->OpenNSPRFileDesc(PR_CREATE_FILE | PR_WRONLY | PR_TRUNCATE, 0664, &fd);
    if (NS_FAILED(rv))
      return PR_FALSE;
  }

  if (access(root, R_OK | X_OK) &&
      mkdir(root, 0775)) {
    fprintf(stderr, "Error: could not create '%s'.\n",
            root);
    return PR_FALSE;
  }

  PR_snprintf(regfile, MAXPATHLEN, "%s/%s.conf", root, aGREMilestone);
  if (MakeConfFile(regfile, greHome, aProperties, aPropertiesLen,
                   aGREMilestone)) {
    PR_fprintf(fd, "%s", aGREMilestone);
    return PR_TRUE;
  }

  for (int i = 0; i < UNIQ_LOOP_LIMIT; ++i) {
    static char buildID[30];
    sprintf(buildID, "%s_%i", aGREMilestone, i);

    PR_snprintf(regfile, MAXPATHLEN, "%s/%s.conf", root, buildID);

    if (MakeConfFile(regfile, greHome, aProperties, aPropertiesLen,
                     aGREMilestone)) {
      PR_Write(fd, buildID, strlen(buildID));
      return PR_TRUE;
    }
  }

  return PR_FALSE;
}

void
UnregisterXULRunner(PRBool aRegisterGlobally, nsIFile* aLocation,
                    const char *aGREMilestone)
{
  nsresult rv;

  char root[MAXPATHLEN] = "/etc/gre.d";

  if (!aRegisterGlobally) {
    char *home = PR_GetEnv("HOME");
    if (!home || !*home)
      return;

    PR_snprintf(root, MAXPATHLEN, "%s/.gre.d", home);
  }

  nsCOMPtr<nsIFile> savedInfoFile;
  aLocation->Clone(getter_AddRefs(savedInfoFile));
  nsCOMPtr<nsILocalFile> localSaved (do_QueryInterface(savedInfoFile));
  if (!localSaved)
    return;

  const char *infoname = aRegisterGlobally ? kRegFileGlobal : kRegFileUser;
  localSaved->AppendNative(nsDependentCString(infoname));

  PRFileDesc* fd = nsnull;
  rv = localSaved->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);
  if (NS_FAILED(rv)) {
    // XXX report error?
    return;
  }

  char keyName[MAXPATHLEN];
  PRInt32 r = PR_Read(fd, keyName, MAXPATHLEN);
  PR_Close(fd);

  localSaved->Remove(PR_FALSE);

  if (r <= 0)
    return;

  keyName[r] = '\0';

  char regFile[MAXPATHLEN];
  PR_snprintf(regFile, MAXPATHLEN, "%s/%s.conf", root, keyName);

  nsCOMPtr<nsILocalFile> lf;
  rv = NS_NewNativeLocalFile(nsDependentCString(regFile), PR_FALSE,
                             getter_AddRefs(lf));
  if (NS_FAILED(rv))
    return;

  nsINIParser p;
  rv = p.Init(lf);
  if (NS_FAILED(rv))
    return;

  rv = p.GetString(aGREMilestone, "GRE_PATH", root, MAXPATHLEN);
  if (NS_FAILED(rv))
    return;

  rv = NS_NewNativeLocalFile(nsDependentCString(root), PR_TRUE,
                             getter_AddRefs(lf));
  if (NS_FAILED(rv))
    return;

  PRBool eq;
  if (NS_SUCCEEDED(aLocation->Equals(lf, &eq)) && eq)
    PR_Delete(regFile);
}