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