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       1                 :            : /*-
       2                 :            :  * Copyright (c) 2012 Matthew Seaman <matthew@FreeBSD.org>
       3                 :            :  * All rights reserved.
       4                 :            :  * 
       5                 :            :  * Redistribution and use in source and binary forms, with or without
       6                 :            :  * modification, are permitted provided that the following conditions
       7                 :            :  * are met:
       8                 :            :  * 1. Redistributions of source code must retain the above copyright
       9                 :            :  *    notice, this list of conditions and the following disclaimer
      10                 :            :  *    in this position and unchanged.
      11                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      12                 :            :  *    notice, this list of conditions and the following disclaimer in the
      13                 :            :  *    documentation and/or other materials provided with the distribution.
      14                 :            :  * 
      15                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
      16                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      17                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      18                 :            :  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
      19                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      20                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      21                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      22                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      23                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      24                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      25                 :            :  */
      26                 :            : 
      27                 :            : #include <sys/param.h>
      28                 :            : 
      29                 :            : #include <stdio.h>
      30                 :            : #include <stdlib.h>
      31                 :            : #include <string.h>
      32                 :            : #include <unistd.h>
      33                 :            : 
      34                 :            : #include <sqlite3.h>
      35                 :            : 
      36                 :            : #include <bsd_compat.h>
      37                 :            : 
      38                 :            : #include "pkg.h"
      39                 :            : #include "private/pkg.h"
      40                 :            : 
      41                 :            : extern struct pkg_ctx ctx;
      42                 :            : 
      43                 :            : #ifndef _LOCALBASE
      44                 :            : #define _LOCALBASE      "/usr/local"
      45                 :            : #endif
      46                 :            : 
      47                 :            : static bool is_exec_at_localbase(const char *progname);
      48                 :            : 
      49                 :            : pkg_status_t
      50                 :         13 : pkg_status(int *count)
      51                 :            : {
      52                 :            :         const char              *progname;
      53                 :            :         char                     dbpath[MAXPATHLEN];
      54                 :         13 :         int                      numpkgs = 0;
      55                 :         13 :         sqlite3                 *db = NULL;
      56                 :         13 :         sqlite3_stmt            *stmt = NULL;
      57                 :         13 :         const char              *sql = "SELECT COUNT(*) FROM packages";
      58                 :            :         bool                     dbsuccess;
      59                 :            : 
      60                 :            :         /* Is this executable called pkg, or does pkg exist at
      61                 :            :            $LOCALBASE/sbin/pkg.  Ditto: pkg-static. Portability:
      62                 :            :            assumes setprogname() has been called */
      63                 :            : 
      64                 :         13 :         progname = getprogname();
      65         [ +  - ]:         13 :         if (progname == NULL)
      66                 :          0 :                 return (PKG_STATUS_UNINSTALLED);
      67                 :            : 
      68   [ -  +  #  # ]:         13 :         if (strcmp(progname, PKG_EXEC_NAME) != 0   &&
      69         [ #  # ]:          0 :             strcmp(progname, PKG_STATIC_NAME) != 0 &&
      70         [ #  # ]:          0 :             !is_exec_at_localbase(PKG_EXEC_NAME)   &&
      71                 :          0 :             !is_exec_at_localbase(PKG_STATIC_NAME))
      72                 :          0 :                 return (PKG_STATUS_UNINSTALLED);
      73                 :            : 
      74                 :            :         /* Does the local.sqlite pkg database exist, and can we open
      75                 :            :            it for reading? */
      76                 :            : 
      77                 :         13 :         snprintf(dbpath, sizeof(dbpath), "%s/local.sqlite", ctx.dbdir);
      78                 :            : 
      79         [ -  + ]:         13 :         if (eaccess(dbpath, R_OK) == -1)
      80                 :         13 :                 return (PKG_STATUS_NODB);
      81                 :            :         
      82                 :            :         /* Try opening the DB and preparing and running a simple query. */
      83                 :            : 
      84                 :          0 :         dbsuccess = (sqlite3_initialize() == SQLITE_OK);
      85         [ #  # ]:          0 :         if (dbsuccess) {
      86                 :          0 :                 dbsuccess = (sqlite3_open_v2(dbpath, &db, SQLITE_OPEN_READONLY, NULL) == SQLITE_OK);
      87         [ #  # ]:          0 :                 if (dbsuccess) {
      88                 :          0 :                         dbsuccess = (sqlite3_prepare_v2(db, sql, -1, &stmt, NULL) == SQLITE_OK);
      89         [ #  # ]:          0 :                         if (dbsuccess) {
      90                 :          0 :                                 dbsuccess = (sqlite3_step(stmt) == SQLITE_ROW);
      91         [ #  # ]:          0 :                                 if (dbsuccess) {
      92                 :          0 :                                         numpkgs = sqlite3_column_int64(stmt, 0);
      93                 :          0 :                                 }
      94                 :          0 :                                 sqlite3_finalize(stmt);
      95                 :          0 :                         }
      96                 :          0 :                         sqlite3_close(db);
      97                 :          0 :                 }
      98                 :          0 :                 sqlite3_shutdown();
      99                 :          0 :         }
     100                 :            : 
     101         [ #  # ]:          0 :         if (!dbsuccess)
     102                 :          0 :                 return (PKG_STATUS_NODB);
     103                 :            : 
     104                 :            :         /* Save result, if requested */
     105         [ #  # ]:          0 :         if (count != NULL)
     106                 :          0 :                 *count = numpkgs;
     107                 :            : 
     108                 :          0 :         return (numpkgs == 0 ? PKG_STATUS_NOPACKAGES : PKG_STATUS_ACTIVE);
     109                 :         13 : }
     110                 :            : 
     111                 :            : static bool
     112                 :          0 : is_exec_at_localbase(const char *progname)
     113                 :            : {
     114                 :            :         char    pkgpath[MAXPATHLEN];
     115                 :          0 :         bool    result = true;
     116                 :            : 
     117                 :          0 :         snprintf(pkgpath, sizeof(pkgpath), "%s/sbin/%s",
     118         [ #  # ]:          0 :                  getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE,
     119                 :          0 :                  progname);
     120         [ #  # ]:          0 :         if (access(pkgpath, X_OK) == -1)
     121                 :          0 :                 result = false;
     122                 :            : 
     123                 :          0 :         return (result);
     124                 :            : }