1 files changed, 37 insertions, 0 deletions
diff --git a/shorten.c b/shorten.c
new file mode 100644
index 0000000..ac76d84
--- /dev/null
+++ b/shorten.c
@@ -0,0 +1,37 @@
+#define _POSIX_C_SOURCE 200908
+#include <stdio.h>
+#include <sys/stat.h>
+#include <openssl/md5.h>
+#include <string.h>
+//#include <sys/types.h>
+#include <sys/xattr.h>
+
+#define BYTES_IN_SHORT 2
+#define CACHE_DIR "/var/cache/shorten"
+
+int main(int argc,char *argv[]) {
+  int i;
+  if(argc < 2) return 1;
+  unsigned char *p=MD5((unsigned char *)argv[1],strlen(argv[1]),NULL);
+  char filepath[4096];//too long, oh well
+  char out[256];
+  char tmp[3];
+  strcpy(out,"");
+  for(i=0;i<BYTES_IN_SHORT;i++) {
+    snprintf(tmp,sizeof(tmp),"%02x",p[i]);
+    strcat(out,tmp);
+  }
+  printf("%s\n",out);
+  snprintf(filepath,sizeof(filepath)-1,"%s/%s",CACHE_DIR,out);
+  FILE *fp;
+  if((fp=fopen(filepath,"w")) == NULL) {
+    fprintf(stderr,"shorten: failed to write a file: %s\n",filepath);
+    return 1;
+  }
+  fprintf(fp,"%s\n",argv[1]);
+  //disabled for now because tmpfs can't do extended attributes
+  //fprintf(stderr,"fsetxattr return: %d\n",fsetxattr(fileno(fp),"user.mime-type","text/uri-list",strlen("text/uri-list"),0));
+  //perror("fsetxattr");
+  fchmod(fileno(fp),0664);
+  fclose(fp);
+}