This commit was manufactured by cvs2svn to create branch

'GNUPG-1-9-BRANCH'.

1 files changed, 333 insertions, 0 deletions

diff --git a/g10/photoid.c b/g10/photoid.c
new file mode 100644
index 000000000..b311bfa09
--- /dev/null
+++ b/g10/photoid.c
@@ -0,0 +1,333 @@
+/* photoid.c - photo ID handling code
+ * Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <config.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#ifdef __MINGW32__ 
+# include <windows.h>
+# ifndef VER_PLATFORM_WIN32_WINDOWS
+#  define VER_PLATFORM_WIN32_WINDOWS 1
+# endif
+#endif
+#include "packet.h"
+#include "status.h"
+#include "exec.h"
+#include "keydb.h"
+#include "util.h"
+#include "i18n.h"
+#include "iobuf.h"
+#include "memory.h"
+#include "options.h"
+#include "main.h"
+#include "photoid.h"
+
+/* Generate a new photo id packet, or return NULL if canceled */
+PKT_user_id *generate_photo_id(PKT_public_key *pk)
+{
+  PKT_user_id *uid;
+  int error=1,i;
+  unsigned int len;
+  char *filename=NULL;
+  byte *photo=NULL;
+  byte header[16];
+  IOBUF file;
+
+  header[0]=0x10; /* little side of photo header length */
+  header[1]=0;    /* big side of photo header length */
+  header[2]=1;    /* 1 == version of photo header */
+  header[3]=1;    /* 1 == JPEG */
+
+  for(i=4;i<16;i++) /* The reserved bytes */
+    header[i]=0;
+
+#define EXTRA_UID_NAME_SPACE 71
+  uid=m_alloc_clear(sizeof(*uid)+71);
+
+  printf(_("\nPick an image to use for your photo ID.  "
+	   "The image must be a JPEG file.\n"
+	   "Remember that the image is stored within your public key.  "
+	   "If you use a\n"
+	   "very large picture, your key will become very large as well!\n"
+	   "Keeping the image close to 240x288 is a good size to use.\n"));
+
+  while(photo==NULL)
+    {
+      printf("\n");
+
+      m_free(filename);
+
+      filename=cpr_get("photoid.jpeg.add",
+		       _("Enter JPEG filename for photo ID: "));
+
+      if(strlen(filename)==0)
+	goto scram;
+
+      file=iobuf_open(filename);
+      if(!file)
+	{
+	  log_error(_("Unable to open photo \"%s\": %s\n"),
+		    filename,strerror(errno));
+	  continue;
+	}
+
+      len=iobuf_get_filelength(file);
+      if(len>6144)
+	{
+	  printf("This JPEG is really large (%d bytes) !\n",len);
+	  if(!cpr_get_answer_is_yes("photoid.jpeg.size",
+			    _("Are you sure you want to use it (y/N)? ")))
+	  {
+	    iobuf_close(file);
+	    continue;
+	  }
+	}
+
+      photo=m_alloc(len);
+      iobuf_read(file,photo,len);
+      iobuf_close(file);
+
+      /* Is it a JPEG? */
+      if(photo[0]!=0xFF || photo[1]!=0xD8 ||
+	 photo[6]!='J' || photo[7]!='F' || photo[8]!='I' || photo[9]!='F')
+	{
+	  log_error(_("\"%s\" is not a JPEG file\n"),filename);
+	  m_free(photo);
+	  photo=NULL;
+	  continue;
+	}
+
+      /* Build the packet */
+      build_attribute_subpkt(uid,1,photo,len,header,16);
+      parse_attribute_subpkts(uid);
+      make_attribute_uidname(uid, EXTRA_UID_NAME_SPACE);
+
+      /* Showing the photo is not safe when noninteractive since the
+         "user" may not be able to dismiss a viewer window! */
+      if(opt.command_fd==-1)
+	{
+	  show_photos(uid->attribs,uid->numattribs,pk,NULL);
+	  switch(cpr_get_answer_yes_no_quit("photoid.jpeg.okay",
+					 _("Is this photo correct (y/N/q)? ")))
+	    {
+	    case -1:
+	      goto scram;
+	    case 0:
+	      free_attributes(uid);
+	      m_free(photo);
+	      photo=NULL;
+	      continue;
+	    }
+	}
+    }
+
+  error=0;
+  uid->ref=1;
+
+ scram:
+  m_free(filename);
+  m_free(photo);
+
+  if(error)
+    {
+      free_attributes(uid);
+      m_free(uid);
+      return NULL;
+    }
+
+  return uid;
+}
+
+/* Returns 0 for error, 1 for valid */
+int parse_image_header(const struct user_attribute *attr,byte *type,u32 *len)
+{
+  u16 headerlen;
+
+  if(attr->len<3)
+    return 0;
+
+  /* For historical reasons (i.e. "oops!"), the header length is
+     little endian. */
+  headerlen=(attr->data[1]<<8) | attr->data[0];
+
+  if(headerlen>attr->len)
+    return 0;
+
+  if(type && attr->len>=4)
+    {
+      if(attr->data[2]==1) /* header version 1 */
+	*type=attr->data[3];
+      else
+	*type=0;
+    }
+
+  *len=attr->len-headerlen;
+
+  if(*len==0)
+    return 0;
+
+  return 1;
+}
+
+/* style==0 for extension, 1 for name, 2 for MIME type.  Remember that
+   the "name" style string could be used in a user ID name field, so
+   make sure it is not too big (see parse-packet.c:parse_attribute).
+   Extensions should be 3 characters long for the best cross-platform
+   compatibility. */
+char *image_type_to_string(byte type,int style)
+{
+  char *string;
+
+  switch(type)
+    {
+    case 1: /* jpeg */
+      if(style==0)
+	string="jpg";
+      else if(style==1)
+	string="jpeg";
+      else
+	string="image/jpeg";
+      break;
+
+    default:
+      if(style==0)
+	string="bin";
+      else if(style==1)
+	string="unknown";
+      else
+	string="image/x-unknown";
+      break;
+    }
+
+  return string;
+}
+
+#if !defined(FIXED_PHOTO_VIEWER) && !defined(DISABLE_PHOTO_VIEWER)
+static const char *get_default_photo_command(void)
+{
+#if defined(__MINGW32__)
+  OSVERSIONINFO osvi;
+
+  memset(&osvi,0,sizeof(osvi));
+  osvi.dwOSVersionInfoSize=sizeof(osvi);
+  GetVersionEx(&osvi);
+
+  if(osvi.dwPlatformId==VER_PLATFORM_WIN32_WINDOWS)
+    return "start /w %i";
+  else
+    return "cmd /c start /w %i";
+#elif defined(__APPLE__)
+  /* OS X.  This really needs more than just __APPLE__. */
+  return "open %I";
+#elif defined(__riscos__)
+  return "Filer_Run %I";
+#else
+  return "xloadimage -fork -quiet -title 'KeyID 0x%k' stdin";
+#endif
+}
+#endif
+
+void show_photos(const struct user_attribute *attrs,
+		 int count,PKT_public_key *pk,PKT_secret_key *sk)
+{
+#ifndef DISABLE_PHOTO_VIEWER
+  int i;
+  struct expando_args args;
+  u32 len;
+  u32 kid[2]={0,0};
+
+  memset(&args,0,sizeof(args));
+  args.pk=pk;
+  args.sk=sk;
+
+  if(pk)
+    keyid_from_pk(pk,kid);
+  else if(sk)
+    keyid_from_sk(sk,kid);
+
+  for(i=0;i<count;i++)
+    if(attrs[i].type==ATTRIB_IMAGE &&
+       parse_image_header(&attrs[i],&args.imagetype,&len))
+      {
+	char *command,*name;
+	struct exec_info *spawn;
+	int offset=attrs[i].len-len;
+
+#ifdef FIXED_PHOTO_VIEWER
+	opt.photo_viewer=FIXED_PHOTO_VIEWER;
+#else
+	if(!opt.photo_viewer)
+	  opt.photo_viewer=get_default_photo_command();
+#endif
+
+	/* make command grow */
+	command=pct_expando(opt.photo_viewer,&args);
+	if(!command)
+	  goto fail;
+
+	name=m_alloc(16+strlen(EXTSEP_S)+
+		     strlen(image_type_to_string(args.imagetype,0))+1);
+
+	/* Make the filename.  Notice we are not using the image
+           encoding type for more than cosmetics.  Most external image
+           viewers can handle a multitude of types, and even if one
+           cannot understand a particular type, we have no way to know
+           which.  The spec permits this, by the way. -dms */
+
+#ifdef USE_ONLY_8DOT3
+	sprintf(name,"%08lX" EXTSEP_S "%s",(ulong)kid[1],
+		image_type_to_string(args.imagetype,0));
+#else
+	sprintf(name,"%08lX%08lX" EXTSEP_S "%s",(ulong)kid[0],(ulong)kid[1],
+		image_type_to_string(args.imagetype,0));
+#endif
+
+	if(exec_write(&spawn,NULL,command,name,1,1)!=0)
+	  {
+	    m_free(name);
+	    goto fail;
+	  }
+
+#ifdef __riscos__
+        riscos_set_filetype_by_mimetype(spawn->tempfile_in,
+                                        image_type_to_string(args.imagetype,2));
+#endif
+
+	m_free(name);
+
+	fwrite(&attrs[i].data[offset],attrs[i].len-offset,1,spawn->tochild);
+
+	if(exec_read(spawn)!=0)
+	  {
+	    exec_finish(spawn);
+	    goto fail;
+	  }
+
+	if(exec_finish(spawn)!=0)
+	  goto fail;
+      }
+
+  return;
+
+ fail:
+  log_error(_("unable to display photo ID!\n"));
+#endif
+}