Some last minute tweaks - type fixes from Stefan and win32 temp files

from Timo.

g10/ChangeLog

@@ -1,3 +1,14 @@
+2001-12-22  David Shaw  <dshaw@jabberwocky.com>
+
+	* mkdtemp.c (mkdtemp): catch the empty ("") string case in case
+	someone repurposes mkdtemp at some point.
+
+	* photoid.c (generate_photo_id, show_photo): some type changes
+	from Stefan Bellon.
+
+	* exec.c (make_tempdir): handle Win32 systems, suggested by Timo
+	Schulz.
+
 2001-12-22  Werner Koch  <wk@gnupg.org>
 
 	* encode.c (encode_simple, encode_crypt): i18n 2 strings.

g10/exec.c

@@ -56,6 +56,9 @@ static int make_tempdir(struct exec_info *info)
 	    {
 #ifdef __riscos__
 	      tmp="<Wimp$ScrapDir>";
+#elsif HAVE_DOSISH_SYSTEM
+	      tmp=m_alloc(1024);
+	      GetTempPath(1023,tmp);
 #else
 	      tmp="/tmp";
 #endif
@@ -67,6 +70,10 @@ static int make_tempdir(struct exec_info *info)
 
   sprintf(info->tempdir,"%s" DIRSEP_S "gpg-XXXXXX",tmp);
 
+#ifdef HAVE_DOSISH_SYSTEM
+  m_free(tmp);
+#endif
+
   if(mkdtemp(info->tempdir)==NULL)
     log_error(_("%s: can't create directory: %s\n"),
 	      info->tempdir,strerror(errno));
@@ -189,7 +196,7 @@ static int expand_args(struct exec_info *info,const char *args_in)
 
 /* The rules are: if there are no args, then it's a fork/exec/pipe.
    If there are args, but no tempfiles, then it's a fork/exec/pipe via
-   bash -c.  If there are tempfiles, then it's a system. */
+   shell -c.  If there are tempfiles, then it's a system. */
 
 int exec_write(struct exec_info **info,const char *program,
 	       const char *args_in,int writeonly,int binary)

g10/mkdtemp.c

@@ -13,14 +13,21 @@
 
 char *mkdtemp(char *template)
 {
-  int attempts,index,count=0;
+  int attempts,idx,count=0;
   byte *ch;
 
-  index=strlen(template);
+  idx=strlen(template);
-  ch=&template[index-1];
+
+  if(idx==0)
+    {
+      errno=EINVAL;
+      return NULL;
+    }
+
+  ch=&template[idx-1];
 
   /* Walk backwards to count all the Xes */
-  while(*ch=='X' && count<index)
+  while(*ch=='X' && count<idx)
     {
       count++;
       ch--;
@@ -37,10 +44,12 @@ char *mkdtemp(char *template)
   /* Try 4 times to make the temp directory */
   for(attempts=0;attempts<4;attempts++)
     {
-      int index=0,remaining=count;
+      int remaining=count;
       char *marker=ch;
       byte *randombits;
 
+      idx=0;
+
       /* Using really random bits is probably overkill here.  The
 	 worst thing that can happen with a directory name collision
 	 is that the function will return an error. */
@@ -49,7 +58,7 @@ char *mkdtemp(char *template)
 
       while(remaining>1)
 	{
-	  sprintf(marker,"%02X",randombits[index++]);
+	  sprintf(marker,"%02X",randombits[idx++]);
 	  marker+=2;
 	  remaining-=2;
 	}
@@ -57,7 +66,7 @@ char *mkdtemp(char *template)
       /* Any leftover Xes?  get_random_bits rounds up to full bytes,
          so this is safe. */
       if(remaining>0)
-	sprintf(marker,"%X",randombits[index]&0xF);
+	sprintf(marker,"%X",randombits[idx]&0xF);
 
       m_free(randombits);
 

g10/photoid.c

@@ -46,9 +46,10 @@
 PKT_user_id *generate_photo_id(PKT_public_key *pk)
 {
   PKT_user_id *uid;
-  int error=1,i,len;
+  int error=1,i;
+  unsigned int len;
   char *filename=NULL;
-  unsigned char *photo=NULL;
+  byte *photo=NULL;
   byte header[16];
   IOBUF file;
 
@@ -194,7 +195,8 @@ void show_photo(const struct user_attribute *attr,PKT_public_key *pk)
 	    case 'f': /* fingerprint */
 	      {
 		byte array[MAX_FINGERPRINT_LEN];
-		int len,i;
+		size_t len;
+		int i;
 
 		fingerprint_from_pk(pk,array,&len);