scheduler/banners.c

   1 /*
   2  * "$Id: banners.c 4719 2005-09-28 21:12:44Z mike $"
   3  *
   4  *   Banner routines for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 1997-2005 by Easy Software Products.
   7  *
   8  *   These coded instructions, statements, and computer programs are the
   9  *   property of Easy Software Products and are protected by Federal
  10  *   copyright law.  Distribution and use rights are outlined in the file
  11  *   "LICENSE.txt" which should have been included with this file.  If this
  12  *   file is missing or damaged please contact Easy Software Products
  13  *   at:
  14  *
  15  *       Attn: CUPS Licensing Information
  16  *       Easy Software Products
  17  *       44141 Airport View Drive, Suite 204
  18  *       Hollywood, Maryland 20636 USA
  19  *
  20  *       Voice: (301) 373-9600
  21  *       EMail: cups-info@cups.org
  22  *         WWW: http://www.cups.org
  23  *
  24  * Contents:
  25  *
  26  *   cupsdAddBanner()   - Add a banner to the array.
  27  *   cupsdFindBanner()  - Find a named banner.
  28  *   cupsdLoadBanners() - Load all available banner files...
  29  *   compare()          - Compare two banners.
  30  */
  31
  32 /*
  33  * Include necessary headers...
  34  */
  35
  36 #include "cupsd.h"
  37 #include <cups/dir.h>
  38
  39
  40 /*
  41  * Local functions...
  42  */
  43
  44 static int      compare(const cupsd_banner_t *b0, const cupsd_banner_t *b1);
  45
  46
  47 /*
  48  * 'cupsdAddBanner()' - Add a banner to the array.
  49  */
  50
  51 void
  52 cupsdAddBanner(const char *name,        /* I - Name of banner */
  53                const char *filename)    /* I - Filename for banner */
  54 {
  55   mime_type_t           *filetype;      /* Filetype */
  56   cupsd_banner_t        *temp;          /* New banner data */
  57
  58
  59  /*
  60   * See what the filetype is...
  61   */
  62
  63   if ((filetype = mimeFileType(MimeDatabase, filename, NULL)) == NULL)
  64   {
  65     cupsdLogMessage(CUPSD_LOG_WARN,
  66                     "cupsdAddBanner: Banner \"%s\" (\"%s\") is of an unknown file type - skipping!",
  67                     name, filename);
  68     return;
  69   }
  70
  71  /*
  72   * Allocate memory...
  73   */
  74
  75   if (NumBanners == 0)
  76     temp = malloc(sizeof(cupsd_banner_t));
  77   else
  78     temp = realloc(Banners, sizeof(cupsd_banner_t) * (NumBanners + 1));
  79
  80   if (temp == NULL)
  81   {
  82     cupsdLogMessage(CUPSD_LOG_ERROR,
  83                     "cupsdAddBanner: Ran out of memory adding a banner!");
  84     return;
  85   }
  86
  87  /*
  88   * Copy the new banner data over...
  89   */
  90
  91   Banners = temp;
  92   temp    += NumBanners;
  93   NumBanners ++;
  94
  95   memset(temp, 0, sizeof(cupsd_banner_t));
  96   strlcpy(temp->name, name, sizeof(temp->name));
  97   temp->filetype = filetype;
  98 }
  99
 100
 101 /*
 102  * 'cupsdFindBanner()' - Find a named banner.
 103  */
 104
 105 cupsd_banner_t *                        /* O - Pointer to banner or NULL */
 106 cupsdFindBanner(const char *name)       /* I - Name of banner */
 107 {
 108   cupsd_banner_t        key;            /* Search key */
 109
 110
 111   strlcpy(key.name, name, sizeof(key.name));
 112
 113   return ((cupsd_banner_t *)bsearch(&key, Banners, NumBanners, sizeof(cupsd_banner_t),
 114                               (int (*)(const void *, const void *))compare));
 115 }
 116
 117
 118 /*
 119  * 'cupsdLoadBanners()' - Load all available banner files...
 120  */
 121
 122 void
 123 cupsdLoadBanners(const char *d)         /* I - Directory to search */
 124 {
 125   cups_dir_t    *dir;                   /* Directory pointer */
 126   cups_dentry_t *dent;                  /* Directory entry */
 127   char          filename[1024],         /* Name of banner */
 128                 *ext;                   /* Pointer to extension */
 129
 130
 131  /*
 132   * Free old banner info...
 133   */
 134
 135   if (NumBanners)
 136   {
 137     free(Banners);
 138     NumBanners = 0;
 139   }
 140
 141  /*
 142   * Try opening the banner directory...
 143   */
 144
 145   if ((dir = cupsDirOpen(d)) == NULL)
 146   {
 147     cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdLoadBanners: Unable to open banner directory \"%s\": %s",
 148                d, strerror(errno));
 149     return;
 150   }
 151
 152  /*
 153   * Read entries, skipping directories and backup files.
 154   */
 155
 156   while ((dent = cupsDirRead(dir)) != NULL)
 157   {
 158    /*
 159     * Check the file to make sure it isn't a directory or a backup
 160     * file of some sort...
 161     */
 162
 163     snprintf(filename, sizeof(filename), "%s/%s", d, dent->filename);
 164
 165     if (S_ISDIR(dent->fileinfo.st_mode))
 166       continue;
 167
 168     if (dent->filename[0] == '~')
 169       continue;
 170
 171     if ((ext = strrchr(dent->filename, '.')) != NULL)
 172       if (!strcmp(ext, ".bck") ||
 173           !strcmp(ext, ".bak") ||
 174           !strcmp(ext, ".sav"))
 175         continue;
 176
 177    /*
 178     * Must be a valid file; add it!
 179     */
 180
 181     cupsdAddBanner(dent->filename, filename);
 182   }
 183
 184  /*
 185   * Close the directory and sort as needed...
 186   */
 187
 188   cupsDirClose(dir);
 189
 190   if (NumBanners > 1)
 191     qsort(Banners, NumBanners, sizeof(cupsd_banner_t),
 192           (int (*)(const void *, const void *))compare);
 193 }
 194
 195
 196 /*
 197  * 'compare()' - Compare two banners.
 198  */
 199
 200 static int                              /* O - -1 if name0 < name1, etc. */
 201 compare(const cupsd_banner_t *b0,       /* I - First banner */
 202         const cupsd_banner_t *b1)       /* I - Second banner */
 203 {
 204   return (strcasecmp(b0->name, b1->name));
 205 }
 206
 207
 208 /*
 209  * End of "$Id: banners.c 4719 2005-09-28 21:12:44Z mike $".
 210  */