1 files changed, 150 insertions, 0 deletions
diff --git a/contrib/isodetect.c b/contrib/isodetect.c
new file mode 100644
index 0000000..25c4c68
--- /dev/null
+++ b/contrib/isodetect.c
@@ -0,0 +1,150 @@
+/*
+ isodetect.c 
+
+ gcc -O2 -Wall isodetect.c -o isodetect
+
+ Looks in first block of an block-device and checks if there is an ISO9660-
+ filesystem on it. This is done by checking for a string "CD001".
+ 
+ Also reads certain information out of the block.
+
+ 14.11.95 T.Niederreiter  (based on cdlabel.c by aeb)
+*/
+
+#include <stdio.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termio.h>
+
+char buf[1024];
+char devname[80];
+
+void printnsp(int begin, int end, char *txt);
+void printchar(unsigned char c);
+
+main(int argc, char **argv) {
+FILE * infile;
+int c;
+int id=0;
+
+ /* Default device to check */
+     strcpy(devname,"/dev/cdrom");
+
+     while ((c = getopt (argc,argv,"hVpPAd:")) != EOF) {
+       switch(c) {
+       case 0:
+         break;
+ 
+       case 'V':
+         id=1;
+         break;
+ 
+       case 'p':
+        id=2;
+         break;
+ 
+       case 'P':
+         id=3;
+         break;
+ 
+       case 'A':
+         id=4;
+         break;
+ 
+       case 'd':
+         strcpy(devname,optarg);
+         break;
+
+       case 'h':
+          printf("Usage: %s [OPTIONS]\n",argv[0]);
+          printf("\
+        -h  show help (this text)\n\
+        -V print VOLUME_ID of ISO9660-Image\n\
+        -p print PREPARER_ID of ISO9660-Image\n\
+        -P print PUBLISHER_ID of ISO9660-Image\n\
+        -A print APPLICATION_ID of ISO9660-Image\n\
+        -d <device>\n");  
+              
+         exit(1);
+       }
+     } 
+
+     infile = fopen(devname, "rb");
+
+     if (infile == NULL) {
+         perror(devname);
+         exit(1);
+     }
+
+     if (lseek(fileno(infile), 32768, SEEK_SET) < 0) {
+         perror("lseek");
+         exit(1);
+     }
+
+     if (read(fileno(infile), buf, sizeof(buf)) != sizeof(buf)) {
+         perror("read");
+         exit(1);
+     }
+
+     if (strncmp(buf, "\001CD001\001", 8) != 0) {
+    if (id==0) {
+           printf("Not ISO9660\n");
+           exit(0);
+         }
+     }
+     else {
+        switch(id) { 
+         case 0:
+           printf("ISO9660\n");
+           exit(0);
+           break;
+
+         case 1:   
+           printnsp(40,72,"Volume_ID");            /*  32 */
+           break;
+
+         case 3:
+           printnsp(318,446,"Publisher");      /* 128 */
+           break;
+   
+         case 2:
+           printnsp(446,574,"Preparer");        /* 128 */
+           break;
+       
+         case 4:
+           printnsp(574,702,"Application");    /* 128 */
+           break;
+       } 
+     }
+ exit(0); 
+}
+
+int empty(char c) {
+     return (c == 0 || c == ' ');
+}
+
+void printnsp(int begin, int end, char *txt) {
+int i,j,k;
+
+     for(i=begin; i<end; i++) {
+         if (empty(buf[i]))
+           continue;
+         for(j=i+1; j<end; j++)
+            if (!buf[j] || (j < end-1 
+   && empty(buf[j]) && empty(buf[j+1]))) break;
+         for(k=i; k<j; k++)
+            printchar(buf[k]);
+         printf("\n");
+         i = j;
+     }
+}
+
+void printchar(unsigned char c) {
+  if (isprint(c) || isspace(c))
+        putchar(c);
+     else
+        printf("\\%03o", c);
+}
+
+