scheduler/banners.c

   1 /*
   2  * "$Id: banners.c 6649 2007-07-11 21:46:42Z mike $"
   3  *
   4  *   Banner routines for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 2007 by Apple Inc.
   7  *   Copyright 1997-2006 by Easy Software Products.
   8  *
   9  *   These coded instructions, statements, and computer programs are the
  10  *   property of Apple Inc. and are protected by Federal copyright
  11  *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  12  *   which should have been included with this file.  If this file is
  13  *   file is missing or damaged, see the license at "http://www.cups.org/".
  14  *
  15  * Contents:
  16  *
  17  *   cupsdFindBanner()  - Find a named banner.
  18  *   cupsdLoadBanners() - Load all available banner files...
  19  *   add_banner()       - Add a banner to the array.
  20  *   compare_banners()  - Compare two banners.
  21  *   free_banners()     - Free all banners.
  22  */
  23
  24 /*
  25  * Include necessary headers...
  26  */
  27
  28 #include "cupsd.h"
  29 #include <cups/dir.h>
  30
  31
  32 /*
  33  * Local functions...
  34  */
  35
  36 static void     add_banner(const char *name, const char *filename);
  37 static int      compare_banners(const cupsd_banner_t *b0,
  38                                 const cupsd_banner_t *b1);
  39 static void     free_banners(void);
  40
  41
  42 /*
  43  * 'cupsdFindBanner()' - Find a named banner.
  44  */
  45
  46 cupsd_banner_t *                        /* O - Pointer to banner or NULL */
  47 cupsdFindBanner(const char *name)       /* I - Name of banner */
  48 {
  49   cupsd_banner_t        key;            /* Search key */
  50
  51
  52   key.name = (char *)name;
  53
  54   return ((cupsd_banner_t *)cupsArrayFind(Banners, &key));
  55 }
  56
  57
  58 /*
  59  * 'cupsdLoadBanners()' - Load all available banner files...
  60  */
  61
  62 void
  63 cupsdLoadBanners(const char *d)         /* I - Directory to search */
  64 {
  65   cups_dir_t    *dir;                   /* Directory pointer */
  66   cups_dentry_t *dent;                  /* Directory entry */
  67   char          filename[1024],         /* Name of banner */
  68                 *ext;                   /* Pointer to extension */
  69
  70
  71  /*
  72   * Free old banner info...
  73   */
  74
  75   free_banners();
  76
  77  /*
  78   * Try opening the banner directory...
  79   */
  80
  81   if ((dir = cupsDirOpen(d)) == NULL)
  82   {
  83     cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdLoadBanners: Unable to open banner directory \"%s\": %s",
  84                d, strerror(errno));
  85     return;
  86   }
  87
  88  /*
  89   * Read entries, skipping directories and backup files.
  90   */
  91
  92   Banners = cupsArrayNew((cups_array_func_t)compare_banners, NULL);
  93
  94   while ((dent = cupsDirRead(dir)) != NULL)
  95   {
  96    /*
  97     * Check the file to make sure it isn't a directory or a backup
  98     * file of some sort...
  99     */
 100
 101     snprintf(filename, sizeof(filename), "%s/%s", d, dent->filename);
 102
 103     if (S_ISDIR(dent->fileinfo.st_mode))
 104       continue;
 105
 106     if (dent->filename[0] == '~' ||
 107         dent->filename[strlen(dent->filename) - 1] == '~')
 108       continue;
 109
 110     if ((ext = strrchr(dent->filename, '.')) != NULL)
 111       if (!strcmp(ext, ".bck") ||
 112           !strcmp(ext, ".bak") ||
 113           !strcmp(ext, ".sav"))
 114         continue;
 115
 116    /*
 117     * Must be a valid file; add it!
 118     */
 119
 120     add_banner(dent->filename, filename);
 121   }
 122
 123  /*
 124   * Close the directory...
 125   */
 126
 127   cupsDirClose(dir);
 128 }
 129
 130
 131 /*
 132  * 'add_banner()' - Add a banner to the array.
 133  */
 134
 135 static void
 136 add_banner(const char *name,            /* I - Name of banner */
 137            const char *filename)        /* I - Filename for banner */
 138 {
 139   mime_type_t           *filetype;      /* Filetype */
 140   cupsd_banner_t        *temp;          /* New banner data */
 141
 142
 143  /*
 144   * See what the filetype is...
 145   */
 146
 147   if ((filetype = mimeFileType(MimeDatabase, filename, NULL, NULL)) == NULL)
 148   {
 149     cupsdLogMessage(CUPSD_LOG_WARN,
 150                     "add_banner: Banner \"%s\" (\"%s\") is of an unknown file type - skipping!",
 151                     name, filename);
 152     return;
 153   }
 154
 155  /*
 156   * Allocate memory...
 157   */
 158
 159   temp = calloc(1, sizeof(cupsd_banner_t));
 160
 161  /*
 162   * Copy the new banner data over...
 163   */
 164
 165   temp->name     = strdup(name);
 166   temp->filetype = filetype;
 167
 168   cupsArrayAdd(Banners, temp);
 169 }
 170
 171
 172 /*
 173  * 'compare_banners()' - Compare two banners.
 174  */
 175
 176 static int                              /* O - -1 if name0 < name1, etc. */
 177 compare_banners(
 178     const cupsd_banner_t *b0,           /* I - First banner */
 179     const cupsd_banner_t *b1)           /* I - Second banner */
 180 {
 181   return (strcasecmp(b0->name, b1->name));
 182 }
 183
 184
 185 /*
 186  * 'free_banners()' - Free all banners.
 187  */
 188
 189 static void
 190 free_banners(void)
 191 {
 192   cupsd_banner_t        *temp;          /* Current banner */
 193
 194
 195   for (temp = (cupsd_banner_t *)cupsArrayFirst(Banners);
 196        temp;
 197        temp = (cupsd_banner_t *)cupsArrayNext(Banners))
 198   {
 199     free(temp->name);
 200     free(temp);
 201   }
 202
 203   cupsArrayDelete(Banners);
 204   Banners = NULL;
 205 }
 206
 207
 208 /*
 209  * End of "$Id: banners.c 6649 2007-07-11 21:46:42Z mike $".
 210  */