mirror of
git://git.gnupg.org/gnupg.git
synced 2025-01-21 14:47:03 +01:00
gpg: photoid: Use standard spawn API.
* g10/photoid.c (exec_write, exec_read, exec_finish): Remove. (setup_input_file): Rename from make_tempdir. (expand_args): Drop support of 'o' and 'O'. (fill_command_argv, run_with_pipe, create_temp_file) New. (show_photo): New with gnupg_spawn_process_fd and gnupg_wait_process. (show_photos): Call show_photo. GnuPG-bug-id: 4362 Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka
parent
c57c5004ec
commit
fd9e6ae22e
765
g10/photoid.c
765
g10/photoid.c
@ -281,8 +281,6 @@ get_default_photo_command(void)
|
||||
#elif defined(__APPLE__)
|
||||
/* OS X. This really needs more than just __APPLE__. */
|
||||
return "open %I";
|
||||
#elif defined(__riscos__)
|
||||
return "Filer_Run %I";
|
||||
#else
|
||||
if (!path_access ("xloadimage", X_OK))
|
||||
return "xloadimage -fork -quiet -title 'KeyID 0x%k' stdin";
|
||||
@ -297,192 +295,144 @@ get_default_photo_command(void)
|
||||
#endif
|
||||
|
||||
#ifndef DISABLE_PHOTO_VIEWER
|
||||
struct exec_info
|
||||
struct spawn_info
|
||||
{
|
||||
int progreturn;
|
||||
struct
|
||||
{
|
||||
unsigned int binary:1;
|
||||
unsigned int writeonly:1;
|
||||
unsigned int madedir:1;
|
||||
unsigned int use_temp_files:1;
|
||||
unsigned int keep_temp_files:1;
|
||||
} flags;
|
||||
pid_t child;
|
||||
FILE *tochild;
|
||||
iobuf_t fromchild;
|
||||
char *command,*name,*tempdir,*tempfile_in,*tempfile_out;
|
||||
unsigned int keep_temp_file;
|
||||
char *command;
|
||||
char *tempdir;
|
||||
char *tempfile;
|
||||
};
|
||||
|
||||
#ifdef NO_EXEC
|
||||
static int
|
||||
exec_write(struct exec_info **info,const char *program,
|
||||
const char *args_in,const char *name,int writeonly,int binary)
|
||||
static void
|
||||
show_photo (const char *command, const char *name, const void *image, u32 len)
|
||||
{
|
||||
log_error(_("no remote program execution supported\n"));
|
||||
return GPG_ERR_GENERAL;
|
||||
}
|
||||
|
||||
static int
|
||||
exec_read(struct exec_info *info) { return GPG_ERR_GENERAL; }
|
||||
|
||||
static int
|
||||
exec_finish(struct exec_info *info) { return GPG_ERR_GENERAL; }
|
||||
|
||||
#else /* ! NO_EXEC */
|
||||
#include <stdlib.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#ifndef EXEC_TEMPFILE_ONLY
|
||||
#include <sys/wait.h>
|
||||
#endif
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
|
||||
#include "../common/membuf.h"
|
||||
#include "../common/sysutils.h"
|
||||
#include "../common/exechelp.h"
|
||||
|
||||
/* Makes a temp directory and filenames */
|
||||
static int
|
||||
make_tempdir(struct exec_info *info)
|
||||
setup_input_file (struct spawn_info *info, const char *name)
|
||||
{
|
||||
char *tmp=opt.temp_dir,*namein=info->name,*nameout;
|
||||
char *tmp = opt.temp_dir;
|
||||
int len;
|
||||
#define TEMPLATE "gpg-XXXXXX"
|
||||
|
||||
if(!namein)
|
||||
namein=info->flags.binary?"tempin" EXTSEP_S "bin":"tempin" EXTSEP_S "txt";
|
||||
/* Initialize by the length of last part in the path + 1 */
|
||||
len = strlen (DIRSEP_S) + strlen (TEMPLATE) + 1;
|
||||
|
||||
nameout=info->flags.binary?"tempout" EXTSEP_S "bin":"tempout" EXTSEP_S "txt";
|
||||
|
||||
/* Make up the temp dir and files in case we need them */
|
||||
|
||||
if(tmp==NULL)
|
||||
/* Make up the temp dir and file in case we need them */
|
||||
if (tmp)
|
||||
{
|
||||
#if defined (_WIN32)
|
||||
int err;
|
||||
|
||||
tmp=xmalloc(MAX_PATH+2);
|
||||
err=GetTempPath(MAX_PATH+1,tmp);
|
||||
if(err==0 || err>MAX_PATH+1)
|
||||
strcpy(tmp,"c:\\windows\\temp");
|
||||
else
|
||||
{
|
||||
int len=strlen(tmp);
|
||||
|
||||
/* GetTempPath may return with \ on the end */
|
||||
while(len>0 && tmp[len-1]=='\\')
|
||||
{
|
||||
tmp[len-1]='\0';
|
||||
len--;
|
||||
}
|
||||
}
|
||||
#else /* More unixish systems */
|
||||
tmp=getenv("TMPDIR");
|
||||
if(tmp==NULL)
|
||||
{
|
||||
tmp=getenv("TMP");
|
||||
if(tmp==NULL)
|
||||
{
|
||||
#ifdef __riscos__
|
||||
tmp="<Wimp$ScrapDir>.GnuPG";
|
||||
mkdir(tmp,0700); /* Error checks occur later on */
|
||||
#else
|
||||
tmp="/tmp";
|
||||
#endif
|
||||
}
|
||||
}
|
||||
#endif
|
||||
len += strlen (tmp);
|
||||
info->tempdir = xmalloc (len);
|
||||
}
|
||||
|
||||
info->tempdir=xmalloc(strlen(tmp)+strlen(DIRSEP_S)+10+1);
|
||||
|
||||
sprintf(info->tempdir,"%s" DIRSEP_S "gpg-XXXXXX",tmp);
|
||||
|
||||
#if defined (_WIN32)
|
||||
xfree(tmp);
|
||||
#endif
|
||||
|
||||
if (!gnupg_mkdtemp(info->tempdir))
|
||||
log_error(_("can't create directory '%s': %s\n"),
|
||||
info->tempdir,strerror(errno));
|
||||
else
|
||||
{
|
||||
info->flags.madedir=1;
|
||||
#if defined (_WIN32)
|
||||
int ret;
|
||||
|
||||
info->tempfile_in=xmalloc(strlen(info->tempdir)+
|
||||
strlen(DIRSEP_S)+strlen(namein)+1);
|
||||
sprintf(info->tempfile_in,"%s" DIRSEP_S "%s",info->tempdir,namein);
|
||||
tmp = xmalloc (MAX_PATH+1);
|
||||
if (!tmp)
|
||||
return -1;
|
||||
|
||||
if(!info->flags.writeonly)
|
||||
ret = GetTempPath (MAX_PATH-len, tmp);
|
||||
if (ret == 0 || ret >= MAX_PATH-len)
|
||||
strcpy (tmp, "c:\\windows\\temp");
|
||||
else
|
||||
{
|
||||
info->tempfile_out=xmalloc(strlen(info->tempdir)+
|
||||
strlen(DIRSEP_S)+strlen(nameout)+1);
|
||||
sprintf(info->tempfile_out,"%s" DIRSEP_S "%s",info->tempdir,nameout);
|
||||
/* GetTempPath may return with \ on the end */
|
||||
while (ret > 0 && tmp[ret-1] == '\\')
|
||||
{
|
||||
tmp[ret-1]='\0';
|
||||
ret--;
|
||||
}
|
||||
}
|
||||
|
||||
len += ret;
|
||||
info->tempdir = tmp;
|
||||
#else /* More unixish systems */
|
||||
if (!(tmp = getenv ("TMPDIR"))
|
||||
&& !(tmp = getenv ("TMP")))
|
||||
tmp = "/tmp";
|
||||
|
||||
len += strlen (tmp);
|
||||
info->tempdir = xmalloc (len);
|
||||
#endif
|
||||
}
|
||||
|
||||
return info->flags.madedir? 0 : GPG_ERR_GENERAL;
|
||||
if (info->tempdir == NULL)
|
||||
return -1;
|
||||
|
||||
sprintf (info->tempdir, "%s" DIRSEP_S TEMPLATE, tmp);
|
||||
|
||||
if (gnupg_mkdtemp (info->tempdir) == NULL)
|
||||
{
|
||||
log_error (_("can't create directory '%s': %s\n"),
|
||||
info->tempdir, strerror (errno));
|
||||
return -1;
|
||||
}
|
||||
|
||||
info->tempfile = xmalloc (strlen (info->tempdir) + strlen (DIRSEP_S)
|
||||
+ strlen (name) + 1);
|
||||
if (info->tempfile == NULL)
|
||||
{
|
||||
xfree (info->tempdir);
|
||||
info->tempdir = NULL;
|
||||
return -1;
|
||||
}
|
||||
sprintf (info->tempfile, "%s" DIRSEP_S "%s", info->tempdir, name);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Expands %i and %o in the args to the full temp files within the
|
||||
temp directory. */
|
||||
/* Expands %i or %I in the args to the full temp file within the temp
|
||||
directory. */
|
||||
static int
|
||||
expand_args(struct exec_info *info,const char *args_in)
|
||||
expand_args (struct spawn_info *info, const char *args_in, const char *name)
|
||||
{
|
||||
const char *ch = args_in;
|
||||
membuf_t command;
|
||||
|
||||
info->flags.use_temp_files=0;
|
||||
info->flags.keep_temp_files=0;
|
||||
info->keep_temp_file = 0;
|
||||
|
||||
if(DBG_EXTPROG)
|
||||
log_debug("expanding string \"%s\"\n",args_in);
|
||||
if (DBG_EXTPROG)
|
||||
log_debug ("expanding string \"%s\"\n", args_in);
|
||||
|
||||
init_membuf (&command, 100);
|
||||
|
||||
while(*ch!='\0')
|
||||
while (*ch != '\0')
|
||||
{
|
||||
if(*ch=='%')
|
||||
if (*ch == '%')
|
||||
{
|
||||
char *append=NULL;
|
||||
const char *append = NULL;
|
||||
|
||||
ch++;
|
||||
|
||||
switch(*ch)
|
||||
switch (*ch)
|
||||
{
|
||||
case 'O':
|
||||
info->flags.keep_temp_files=1;
|
||||
/* fall through */
|
||||
|
||||
case 'o': /* out */
|
||||
if(!info->flags.madedir)
|
||||
{
|
||||
if(make_tempdir(info))
|
||||
goto fail;
|
||||
}
|
||||
append=info->tempfile_out;
|
||||
info->flags.use_temp_files=1;
|
||||
break;
|
||||
|
||||
case 'I':
|
||||
info->flags.keep_temp_files=1;
|
||||
info->keep_temp_file = 1;
|
||||
/* fall through */
|
||||
|
||||
case 'i': /* in */
|
||||
if(!info->flags.madedir)
|
||||
if (info->tempfile == NULL)
|
||||
{
|
||||
if(make_tempdir(info))
|
||||
if (setup_input_file (info, name) < 0)
|
||||
goto fail;
|
||||
}
|
||||
append=info->tempfile_in;
|
||||
info->flags.use_temp_files=1;
|
||||
append = info->tempfile;
|
||||
break;
|
||||
|
||||
case '%':
|
||||
append="%";
|
||||
append = "%";
|
||||
break;
|
||||
}
|
||||
|
||||
if(append)
|
||||
if (append)
|
||||
put_membuf_str (&command, append);
|
||||
}
|
||||
else
|
||||
@ -495,348 +445,167 @@ expand_args(struct exec_info *info,const char *args_in)
|
||||
|
||||
info->command = get_membuf (&command, NULL);
|
||||
if (!info->command)
|
||||
return gpg_error_from_syserror ();
|
||||
return -1;
|
||||
|
||||
if(DBG_EXTPROG)
|
||||
log_debug("args expanded to \"%s\", use %u, keep %u\n",info->command,
|
||||
info->flags.use_temp_files,info->flags.keep_temp_files);
|
||||
log_debug("args expanded to \"%s\", use %s, keep %u\n", info->command,
|
||||
info->tempfile, info->keep_temp_file);
|
||||
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
xfree (get_membuf (&command, NULL));
|
||||
return GPG_ERR_GENERAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Either handles the tempfile creation, or the fork/exec. If it
|
||||
returns ok, then info->tochild is a FILE * that can be written to.
|
||||
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
|
||||
shell -c. If there are tempfiles, then it's a system. */
|
||||
|
||||
static int
|
||||
exec_write(struct exec_info **info,const char *program,
|
||||
const char *args_in,const char *name,int writeonly,int binary)
|
||||
{
|
||||
int ret = GPG_ERR_GENERAL;
|
||||
|
||||
if(opt.exec_disable && !opt.no_perm_warn)
|
||||
{
|
||||
log_info(_("external program calls are disabled due to unsafe "
|
||||
"options file permissions\n"));
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#if defined(HAVE_GETUID) && defined(HAVE_GETEUID)
|
||||
/* There should be no way to get to this spot while still carrying
|
||||
setuid privs. Just in case, bomb out if we are. */
|
||||
if ( getuid () != geteuid ())
|
||||
BUG ();
|
||||
#endif
|
||||
|
||||
if(program==NULL && args_in==NULL)
|
||||
BUG();
|
||||
|
||||
*info=xmalloc_clear(sizeof(struct exec_info));
|
||||
|
||||
if(name)
|
||||
(*info)->name=xstrdup(name);
|
||||
(*info)->flags.binary=binary;
|
||||
(*info)->flags.writeonly=writeonly;
|
||||
|
||||
/* Expand the args, if any */
|
||||
if(args_in && expand_args(*info,args_in))
|
||||
goto fail;
|
||||
|
||||
#ifdef EXEC_TEMPFILE_ONLY
|
||||
if(!(*info)->flags.use_temp_files)
|
||||
{
|
||||
log_error(_("this platform requires temporary files when calling"
|
||||
" external programs\n"));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
#else /* !EXEC_TEMPFILE_ONLY */
|
||||
|
||||
/* If there are no args, or there are args, but no temp files, we
|
||||
can use fork/exec/pipe */
|
||||
if(args_in==NULL || (*info)->flags.use_temp_files==0)
|
||||
{
|
||||
int to[2],from[2];
|
||||
|
||||
if(pipe(to)==-1)
|
||||
goto fail;
|
||||
|
||||
if(pipe(from)==-1)
|
||||
{
|
||||
close(to[0]);
|
||||
close(to[1]);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if(((*info)->child=fork())==-1)
|
||||
{
|
||||
close(to[0]);
|
||||
close(to[1]);
|
||||
close(from[0]);
|
||||
close(from[1]);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if((*info)->child==0)
|
||||
{
|
||||
char *shell=getenv("SHELL");
|
||||
|
||||
if(shell==NULL)
|
||||
shell="/bin/sh";
|
||||
|
||||
/* I'm the child */
|
||||
|
||||
/* If the program isn't going to respond back, they get to
|
||||
keep their stdout/stderr */
|
||||
if(!(*info)->flags.writeonly)
|
||||
{
|
||||
/* implied close of STDERR */
|
||||
if(dup2(STDOUT_FILENO,STDERR_FILENO)==-1)
|
||||
_exit(1);
|
||||
|
||||
/* implied close of STDOUT */
|
||||
close(from[0]);
|
||||
if(dup2(from[1],STDOUT_FILENO)==-1)
|
||||
_exit(1);
|
||||
}
|
||||
|
||||
/* implied close of STDIN */
|
||||
close(to[1]);
|
||||
if(dup2(to[0],STDIN_FILENO)==-1)
|
||||
_exit(1);
|
||||
|
||||
if(args_in==NULL)
|
||||
{
|
||||
if(DBG_EXTPROG)
|
||||
log_debug("execlp: %s\n",program);
|
||||
|
||||
execlp(program,program,(void *)NULL);
|
||||
}
|
||||
else
|
||||
{
|
||||
if(DBG_EXTPROG)
|
||||
log_debug("execlp: %s -c %s\n",shell,(*info)->command);
|
||||
|
||||
execlp(shell,shell,"-c",(*info)->command,(void *)NULL);
|
||||
}
|
||||
|
||||
/* If we get this far the exec failed. Clean up and return. */
|
||||
|
||||
if(args_in==NULL)
|
||||
log_error(_("unable to execute program '%s': %s\n"),
|
||||
program,strerror(errno));
|
||||
else
|
||||
log_error(_("unable to execute shell '%s': %s\n"),
|
||||
shell,strerror(errno));
|
||||
|
||||
/* This mimics the POSIX sh behavior - 127 means "not found"
|
||||
from the shell. */
|
||||
if(errno==ENOENT)
|
||||
_exit(127);
|
||||
|
||||
_exit(1);
|
||||
}
|
||||
|
||||
/* I'm the parent */
|
||||
|
||||
close(to[0]);
|
||||
|
||||
(*info)->tochild=fdopen(to[1],binary?"wb":"w");
|
||||
if((*info)->tochild==NULL)
|
||||
{
|
||||
ret = gpg_error_from_syserror ();
|
||||
close(to[1]);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
close(from[1]);
|
||||
|
||||
(*info)->fromchild=iobuf_fdopen(from[0],"r");
|
||||
if((*info)->fromchild==NULL)
|
||||
{
|
||||
ret = gpg_error_from_syserror ();
|
||||
close(from[0]);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* fd iobufs are cached! */
|
||||
iobuf_ioctl((*info)->fromchild, IOBUF_IOCTL_NO_CACHE, 1, NULL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif /* !EXEC_TEMPFILE_ONLY */
|
||||
|
||||
if(DBG_EXTPROG)
|
||||
log_debug("using temp file '%s'\n",(*info)->tempfile_in);
|
||||
|
||||
/* It's not fork/exec/pipe, so create a temp file */
|
||||
if( is_secured_filename ((*info)->tempfile_in) )
|
||||
{
|
||||
(*info)->tochild = NULL;
|
||||
gpg_err_set_errno (EPERM);
|
||||
}
|
||||
else
|
||||
(*info)->tochild=fopen((*info)->tempfile_in,binary?"wb":"w");
|
||||
if((*info)->tochild==NULL)
|
||||
{
|
||||
ret = gpg_error_from_syserror ();
|
||||
log_error(_("can't create '%s': %s\n"),
|
||||
(*info)->tempfile_in,strerror(errno));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ret=0;
|
||||
|
||||
fail:
|
||||
if (ret)
|
||||
{
|
||||
xfree (*info);
|
||||
*info = NULL;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int
|
||||
exec_read(struct exec_info *info)
|
||||
{
|
||||
int ret = GPG_ERR_GENERAL;
|
||||
|
||||
fclose(info->tochild);
|
||||
info->tochild=NULL;
|
||||
|
||||
if(info->flags.use_temp_files)
|
||||
{
|
||||
if(DBG_EXTPROG)
|
||||
log_debug ("running command: %s\n",info->command);
|
||||
|
||||
#if defined (_WIN32)
|
||||
info->progreturn=w32_system(info->command);
|
||||
#else
|
||||
info->progreturn=system(info->command);
|
||||
#endif
|
||||
|
||||
if(info->progreturn==-1)
|
||||
{
|
||||
log_error(_("system error while calling external program: %s\n"),
|
||||
strerror(errno));
|
||||
info->progreturn=127;
|
||||
goto fail;
|
||||
}
|
||||
|
||||
#if defined(WIFEXITED) && defined(WEXITSTATUS)
|
||||
if(WIFEXITED(info->progreturn))
|
||||
info->progreturn=WEXITSTATUS(info->progreturn);
|
||||
else
|
||||
{
|
||||
log_error(_("unnatural exit of external program\n"));
|
||||
info->progreturn=127;
|
||||
goto fail;
|
||||
}
|
||||
#else
|
||||
/* If we don't have the macros, do the best we can. */
|
||||
info->progreturn = (info->progreturn & 0xff00) >> 8;
|
||||
#endif
|
||||
|
||||
/* 127 is the magic value returned from system() to indicate
|
||||
that the shell could not be executed, or from /bin/sh to
|
||||
indicate that the program could not be executed. */
|
||||
|
||||
if(info->progreturn==127)
|
||||
{
|
||||
log_error(_("unable to execute external program\n"));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if(!info->flags.writeonly)
|
||||
{
|
||||
info->fromchild=iobuf_open(info->tempfile_out);
|
||||
if (info->fromchild
|
||||
&& is_secured_file (iobuf_get_fd (info->fromchild)))
|
||||
{
|
||||
iobuf_close (info->fromchild);
|
||||
info->fromchild = NULL;
|
||||
gpg_err_set_errno (EPERM);
|
||||
}
|
||||
if(info->fromchild==NULL)
|
||||
{
|
||||
ret = gpg_error_from_syserror ();
|
||||
log_error(_("unable to read external program response: %s\n"),
|
||||
strerror(errno));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Do not cache this iobuf on close */
|
||||
iobuf_ioctl(info->fromchild, IOBUF_IOCTL_NO_CACHE, 1, NULL);
|
||||
}
|
||||
}
|
||||
|
||||
ret=0;
|
||||
|
||||
fail:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int
|
||||
exec_finish(struct exec_info *info)
|
||||
{
|
||||
int ret=info->progreturn;
|
||||
|
||||
if(info->fromchild)
|
||||
iobuf_close(info->fromchild);
|
||||
|
||||
if(info->tochild)
|
||||
fclose(info->tochild);
|
||||
|
||||
#ifndef EXEC_TEMPFILE_ONLY
|
||||
if(info->child>0)
|
||||
{
|
||||
if(waitpid(info->child,&info->progreturn,0)!=0 &&
|
||||
WIFEXITED(info->progreturn))
|
||||
ret=WEXITSTATUS(info->progreturn);
|
||||
else
|
||||
{
|
||||
log_error(_("unnatural exit of external program\n"));
|
||||
ret=127;
|
||||
}
|
||||
}
|
||||
static void
|
||||
fill_command_argv (const char *argv[4], const char *command)
|
||||
{
|
||||
argv[0] = getenv ("SHELL");
|
||||
if (argv[0] == NULL)
|
||||
argv[0] = "/bin/sh";
|
||||
|
||||
argv[1] = "-c";
|
||||
argv[2] = command;
|
||||
argv[3] = NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
if(info->flags.madedir && !info->flags.keep_temp_files)
|
||||
static void
|
||||
run_with_pipe (struct spawn_info *info, const void *image, u32 len)
|
||||
{
|
||||
#ifdef EXEC_TEMPFILE_ONLY
|
||||
(void)info;
|
||||
(void)image;
|
||||
(void)len;
|
||||
log_error (_("this platform requires temporary files when calling"
|
||||
" external programs\n"));
|
||||
return;
|
||||
#else /* !EXEC_TEMPFILE_ONLY */
|
||||
int to[2];
|
||||
pid_t pid;
|
||||
gpg_error_t err;
|
||||
const char *argv[4];
|
||||
|
||||
err = gnupg_create_pipe (to);
|
||||
if (err)
|
||||
return;
|
||||
|
||||
fill_command_argv (argv, info->command);
|
||||
err = gnupg_spawn_process_fd (argv[0], argv+1, to[0], -1, -1, &pid);
|
||||
|
||||
close (to[0]);
|
||||
|
||||
if (err)
|
||||
{
|
||||
if(info->tempfile_in)
|
||||
{
|
||||
if(unlink(info->tempfile_in)==-1)
|
||||
log_info(_("WARNING: unable to remove tempfile (%s) '%s': %s\n"),
|
||||
"in",info->tempfile_in,strerror(errno));
|
||||
}
|
||||
log_error (_("unable to execute shell '%s': %s\n"),
|
||||
argv[0], gpg_strerror (err));
|
||||
close (to[1]);
|
||||
}
|
||||
else
|
||||
{
|
||||
write (to[1], image, len);
|
||||
close (to[1]);
|
||||
|
||||
if(info->tempfile_out)
|
||||
{
|
||||
if(unlink(info->tempfile_out)==-1)
|
||||
log_info(_("WARNING: unable to remove tempfile (%s) '%s': %s\n"),
|
||||
"out",info->tempfile_out,strerror(errno));
|
||||
}
|
||||
err = gnupg_wait_process (argv[0], pid, 1, NULL);
|
||||
if (err)
|
||||
log_error (_("unnatural exit of external program\n"));
|
||||
}
|
||||
#endif /* !EXEC_TEMPFILE_ONLY */
|
||||
}
|
||||
|
||||
if(rmdir(info->tempdir)==-1)
|
||||
log_info(_("WARNING: unable to remove temp directory '%s': %s\n"),
|
||||
info->tempdir,strerror(errno));
|
||||
static int
|
||||
create_temp_file (struct spawn_info *info, const void *ptr, u32 len)
|
||||
{
|
||||
if (DBG_EXTPROG)
|
||||
log_debug ("using temp file '%s'\n", info->tempfile);
|
||||
|
||||
/* It's not fork/exec/pipe, so create a temp file */
|
||||
if ( is_secured_filename (info->tempfile) )
|
||||
{
|
||||
log_error (_("can't create '%s': %s\n"),
|
||||
info->tempfile, strerror (EPERM));
|
||||
gpg_err_set_errno (EPERM);
|
||||
return -1;
|
||||
}
|
||||
else
|
||||
{
|
||||
FILE *fp = fopen (info->tempfile, "wb");
|
||||
|
||||
if (fp)
|
||||
{
|
||||
fwrite (ptr, len, 1, fp);
|
||||
fclose (fp);
|
||||
return 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
int save = errno;
|
||||
log_error (_("can't create '%s': %s\n"),
|
||||
info->tempfile, strerror(errno));
|
||||
gpg_err_set_errno (save);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
show_photo (const char *command, const char *name, const void *image, u32 len)
|
||||
{
|
||||
struct spawn_info *spawn;
|
||||
|
||||
spawn = xmalloc_clear (sizeof (struct spawn_info));
|
||||
if (!spawn)
|
||||
return;
|
||||
|
||||
/* Expand the args */
|
||||
if (expand_args (spawn, command, name) < 0)
|
||||
{
|
||||
xfree (spawn);
|
||||
return;
|
||||
}
|
||||
|
||||
xfree(info->command);
|
||||
xfree(info->name);
|
||||
xfree(info->tempdir);
|
||||
xfree(info->tempfile_in);
|
||||
xfree(info->tempfile_out);
|
||||
xfree(info);
|
||||
if (DBG_EXTPROG)
|
||||
log_debug ("running command: %s\n", spawn->command);
|
||||
|
||||
return ret;
|
||||
if (spawn->tempfile == NULL)
|
||||
run_with_pipe (spawn, image, len);
|
||||
else if (create_temp_file (spawn, image, len) == 0)
|
||||
{
|
||||
#if defined (_WIN32)
|
||||
if (w32_system (spawn->command) < 0)
|
||||
log_error (_("system error while calling external program: %s\n"),
|
||||
strerror (errno));
|
||||
#else
|
||||
pid_t pid;
|
||||
gpg_error_t err;
|
||||
const char *argv[4];
|
||||
|
||||
fill_command_argv (argv, spawn->command);
|
||||
err = gnupg_spawn_process_fd (argv[0], argv+1, -1, -1, -1, &pid);
|
||||
if (!err)
|
||||
err = gnupg_wait_process (argv[0], pid, 1, NULL);
|
||||
if (err)
|
||||
log_error (_("unnatural exit of external program\n"));
|
||||
#endif
|
||||
|
||||
if (!spawn->keep_temp_file)
|
||||
{
|
||||
if (unlink (spawn->tempfile) < 0)
|
||||
log_info (_("WARNING: unable to remove tempfile (%s) '%s': %s\n"),
|
||||
"in", spawn->tempfile, strerror(errno));
|
||||
|
||||
if (rmdir (spawn->tempdir) < 0)
|
||||
log_info (_("WARNING: unable to remove temp directory '%s': %s\n"),
|
||||
spawn->tempdir, strerror(errno));
|
||||
}
|
||||
}
|
||||
|
||||
xfree(spawn->command);
|
||||
xfree(spawn->tempdir);
|
||||
xfree(spawn->tempfile);
|
||||
xfree(spawn);
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
@ -857,6 +626,20 @@ show_photos (ctrl_t ctrl, const struct user_attribute *attrs, int count,
|
||||
u32 len;
|
||||
u32 kid[2]={0,0};
|
||||
|
||||
if (opt.exec_disable && !opt.no_perm_warn)
|
||||
{
|
||||
log_info (_("external program calls are disabled due to unsafe "
|
||||
"options file permissions\n"));
|
||||
return;
|
||||
}
|
||||
|
||||
#if defined(HAVE_GETUID) && defined(HAVE_GETEUID)
|
||||
/* There should be no way to get to this spot while still carrying
|
||||
setuid privs. Just in case, bomb out if we are. */
|
||||
if ( getuid () != geteuid ())
|
||||
BUG ();
|
||||
#endif
|
||||
|
||||
memset (&args, 0, sizeof(args));
|
||||
args.pk = pk;
|
||||
args.validity_info = get_validity_info (ctrl, NULL, pk, uid);
|
||||
@ -869,28 +652,33 @@ show_photos (ctrl_t ctrl, const struct user_attribute *attrs, int count,
|
||||
|
||||
es_fflush (es_stdout);
|
||||
|
||||
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;
|
||||
opt.photo_viewer = FIXED_PHOTO_VIEWER;
|
||||
#else
|
||||
if(!opt.photo_viewer)
|
||||
opt.photo_viewer=get_default_photo_command();
|
||||
if (!opt.photo_viewer)
|
||||
opt.photo_viewer = get_default_photo_command ();
|
||||
#endif
|
||||
|
||||
for (i=0; i<count; i++)
|
||||
if (attrs[i].type == ATTRIB_IMAGE
|
||||
&& parse_image_header (&attrs[i], &args.imagetype, &len))
|
||||
{
|
||||
char *command, *name;
|
||||
int offset = attrs[i].len-len;
|
||||
|
||||
/* make command grow */
|
||||
command=pct_expando(opt.photo_viewer,&args);
|
||||
if(!command)
|
||||
command = pct_expando (opt.photo_viewer, &args);
|
||||
if (!command)
|
||||
goto fail;
|
||||
|
||||
name=xmalloc(16+strlen(EXTSEP_S)+
|
||||
strlen(image_type_to_string(args.imagetype,0))+1);
|
||||
name = xmalloc (1 + 16 + strlen(EXTSEP_S)
|
||||
+ strlen (image_type_to_string (args.imagetype, 0)));
|
||||
|
||||
if (!name)
|
||||
{
|
||||
xfree (command);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Make the filename. Notice we are not using the image
|
||||
encoding type for more than cosmetics. Most external image
|
||||
@ -899,36 +687,17 @@ show_photos (ctrl_t ctrl, const struct user_attribute *attrs, int count,
|
||||
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));
|
||||
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));
|
||||
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)
|
||||
{
|
||||
xfree(name);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
#ifdef __riscos__
|
||||
riscos_set_filetype_by_mimetype(spawn->tempfile_in,
|
||||
image_type_to_string(args.imagetype,2));
|
||||
#endif
|
||||
|
||||
xfree(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;
|
||||
show_photo (command, name, &attrs[i].data[offset], len);
|
||||
xfree (name);
|
||||
xfree (command);
|
||||
}
|
||||
|
||||
return;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user