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Some exec cleanups and tweaks for photo ID and keyserver execution

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This commit is contained in:
David Shaw 2001-12-27 20:48:05 +00:00
parent 2450c71ac3
commit 1a2d0ebc11
10 changed files with 107 additions and 44 deletions
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17
g10/ChangeLog
View File

@ -1,3 +1,20 @@
2001-12-27 David Shaw <dshaw@jabberwocky.com>
* exec.c (exec_finish): Show errors when temp files cannot be
deleted for whatever reason.
* exec.c (exec_read): Don't rely on WEXITSTATUS being present.
* exec.c (make_tempdir): Add temp file creator for win32. Don't
create an incoming temp file if the exec is write-only.
* keyserver.c (keyserver_spawn): Clean up error handling, for when
the spawn fails.
* photoid.c (show_photo): Clean up error handling.
* misc.c (check_permissions): Neaten.
2001-12-25 David Shaw <dshaw@jabberwocky.com>
* mkdtemp.c (mkdtemp): Add copyleft info and tweak the 'X' counter

78
g10/exec.c
View File

@ -24,7 +24,7 @@
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifndef HAVE_DOSISH_SYSTEM
#ifndef EXEC_TEMPFILE_ONLY
#include <sys/wait.h>
#endif
#include <fcntl.h>
@ -58,9 +58,21 @@ static int make_tempdir(struct exec_info *info)
{
#ifdef __riscos__
tmp="<Wimp$ScrapDir>";
#elsif HAVE_DOSISH_SYSTEM
tmp=m_alloc(1024);
GetTempPath(1023,tmp);
#elif defined (__MINGW32__) || defined (__CYGWIN32__)
tmp=m_alloc(256);
if(GetTempPath(256,tmp)==0)
strcpy(tmp,"c:\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
tmp="/tmp";
#endif
@ -72,7 +84,7 @@ static int make_tempdir(struct exec_info *info)
sprintf(info->tempdir,"%s" DIRSEP_S "gpg-XXXXXX",tmp);
#ifdef HAVE_DOSISH_SYSTEM
#if defined (__MINGW32__) || defined (__CYGWIN32__)
m_free(tmp);
#endif
@ -87,16 +99,19 @@ static int make_tempdir(struct exec_info *info)
sprintf(info->tempfile_in,"%s" DIRSEP_S "datain" EXTSEP_S "%s",
info->tempdir,info->binary?"bin":"txt");
info->tempfile_out=m_alloc(strlen(info->tempdir)+1+11+1);
sprintf(info->tempfile_out,"%s" DIRSEP_S "dataout" EXTSEP_S "%s",
info->tempdir,info->binary?"bin":"txt");
if(!info->writeonly)
{
info->tempfile_out=m_alloc(strlen(info->tempdir)+1+11+1);
sprintf(info->tempfile_out,"%s" DIRSEP_S "dataout" EXTSEP_S "%s",
info->tempdir,info->binary?"bin":"txt");
}
}
return info->madedir?0:G10ERR_GENERAL;
}
/* Expands %i and %o in the args to the full temp files (within the
temp directory */
/* Expands %i and %o in the args to the full temp files within the
temp directory. */
static int expand_args(struct exec_info *info,const char *args_in)
{
const char *ch=args_in;
@ -193,10 +208,8 @@ static int expand_args(struct exec_info *info,const char *args_in)
}
/* 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.
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. */
@ -355,10 +368,9 @@ int exec_write(struct exec_info **info,const char *program,
goto fail;
}
return 0;
ret=0;
fail:
exec_finish(*info);
return ret;
}
@ -379,12 +391,21 @@ int exec_read(struct exec_info *info)
{
log_error(_("system error while calling external program: %s\n"),
strerror(errno));
info->progreturn=127;
goto fail;
}
else
{
#ifdef WEXITSTATUS
info->progreturn=WEXITSTATUS(info->progreturn);
#else
info->progreturn/=256;
#endif
}
#ifndef HAVE_DOSISH_SYSTEM
info->progreturn=WEXITSTATUS(info->progreturn);
#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)
{
@ -405,10 +426,9 @@ int exec_read(struct exec_info *info)
}
}
return 0;
ret=0;
fail:
exec_finish(info);
return ret;
}
@ -436,12 +456,22 @@ int exec_finish(struct exec_info *info)
if(info->madedir && !info->keep_temp_files)
{
if(info->tempfile_in)
unlink(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));
}
if(info->tempfile_out)
unlink(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));
}
rmdir(info->tempdir);
if(rmdir(info->tempdir)==-1)
log_info(_("Warning: unable to remove temp directory \"%s\": %s\n"),
info->tempdir,strerror(errno));
}
m_free(info->command);

19
g10/keyserver.c
View File

@ -452,7 +452,7 @@ keyserver_spawn(int action,STRLIST list,u32 (*kidlist)[2],int count,int *prog)
if(!gotversion)
{
log_error(_("keyserver communications error\n"));
log_error(_("keyserver did not send VERSION\n"));
goto fail;
}
@ -510,9 +510,8 @@ keyserver_spawn(int action,STRLIST list,u32 (*kidlist)[2],int count,int *prog)
break;
}
*prog=exec_finish(spawn);
fail:
*prog=exec_finish(spawn);
return ret;
}
@ -558,13 +557,11 @@ keyserver_work(int action,STRLIST list,u32 (*kidlist)[2],int count)
/* It's not the internal HKP code, so try and spawn a handler for it */
if((rc=keyserver_spawn(action,list,kidlist,count,&ret))==0)
rc=keyserver_spawn(action,list,kidlist,count,&ret);
if(ret)
{
switch(ret)
{
case KEYSERVER_OK:
break;
case KEYSERVER_SCHEME_NOT_FOUND:
log_error(_("no handler for keyserver scheme \"%s\"\n"),
opt.keyserver_scheme);
@ -576,12 +573,12 @@ keyserver_work(int action,STRLIST list,u32 (*kidlist)[2],int count)
break;
}
/* This is not the best error code for this */
return G10ERR_INVALID_URI;
return G10ERR_KEYSERVER;
}
else
if(rc)
{
log_error(_("keyserver communications error\n"));
log_error(_("keyserver communications error: %s\n"),g10_errstr(rc));
return rc;
}

8
g10/misc.c
View File

@ -341,8 +341,8 @@ openpgp_md_test_algo( int algo )
int
check_permissions(const char *path,int checkonly)
{
#ifndef HAVE_DOSISH_SYSTEM
#ifdef HAVE_STAT
#if defined(HAVE_STAT) && !defined(HAVE_DOSISH_SYSTEM)
struct stat statbuf;
int isdir=0;
@ -392,8 +392,8 @@ check_permissions(const char *path,int checkonly)
isdir?"directory":"file",path);
return 1;
}
#endif
#endif /*!HAVE_DOSISH_SYSTEM*/
#endif /* HAVE_STAT && !HAVE_DOSISH_SYSTEM */
return 0;
}

10
g10/photoid.c
View File

@ -236,12 +236,18 @@ void show_photo(const struct user_attribute *attr,PKT_public_key *pk)
command[PHOTO_COMMAND_MAXLEN-1]='\0';
if(exec_write(&spawn,NULL,command,1,1)!=0)
goto fail;
{
exec_finish(spawn);
goto fail;
}
fwrite(attr->data,attr->len,1,spawn->tochild);
if(exec_read(spawn)!=0)
goto fail;
{
exec_finish(spawn);
goto fail;
}
if(exec_finish(spawn)!=0)
goto fail;

7
include/ChangeLog
View File

@ -1,3 +1,10 @@
2001-12-27 David Shaw <dshaw@jabberwocky.com>
* KEYSERVER_SCHEME_NOT_FOUND should be 127 to match the POSIX
system() (via /bin/sh) way of signaling this.
* Added G10ERR_KEYSERVER
2001-12-27 Werner Koch <wk@gnupg.org>
* util.h [MINGW32]: Fixed name of include file.

1
include/errors.h
View File

@ -74,6 +74,7 @@
#define G10ERR_NOT_PROCESSED 52
#define G10ERR_UNU_PUBKEY 53
#define G10ERR_UNU_SECKEY 54
#define G10ERR_KEYSERVER 55
#ifndef HAVE_STRERROR

6
include/keyserver.h
View File

@ -23,8 +23,8 @@
/* Return codes */
#define KEYSERVER_OK 0
#define KEYSERVER_SCHEME_NOT_FOUND 1
#define KEYSERVER_INTERNAL_ERROR 2
#define KEYSERVER_VERSION_ERROR 3
#define KEYSERVER_INTERNAL_ERROR 1
#define KEYSERVER_VERSION_ERROR 2
#define KEYSERVER_SCHEME_NOT_FOUND 127
#endif /* !_KEYSERVER_H_ */

4
util/ChangeLog
View File

@ -1,3 +1,7 @@
2001-12-27 David Shaw <dshaw@jabberwocky.com>
* errors.c (g10_errstr): Added G10ERR_KEYSERVER
2001-12-27 Werner Koch <wk@gnupg.org>
* simple-gettext.c [MINGW32]: Fixed last changed.

1
util/errors.c
View File

@ -104,6 +104,7 @@ g10_errstr( int err )
/* the key cannot be used for a specific usage */
X(UNU_PUBKEY ,N_("unusable public key"))
X(UNU_SECKEY ,N_("unusable secret key"))
X(KEYSERVER ,N_("keyserver error"))
default: p = buf; sprintf(buf, "g10err=%d", err); break;
}
#undef X