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Implement the server comamnd DECRYPT.

Browse Source 
Use int instead of gnupg_fd_t in the server.
Comment fixes.
Rename encr-data.c -> decrypt-data.c
This commit is contained in:
Werner Koch 2009-10-02 14:57:55 +00:00
parent 3b7dc7b384
commit 71625f56fd
12 changed files with 131 additions and 41 deletions
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10
g10/ChangeLog
View File

@ -1,3 +1,13 @@
2009-10-02 Werner Koch <wk@g10code.com>
* server.c (cmd_encrypt, cmd_decrypt): Implement.
* decrypt.c (decrypt_message_fd): New.
* options.h (struct opt): Add field OUTFP.
* plaintext.c (handle_plaintext): Support opt.outfp.
* encr-data.c: Rename to decrypt-data.c to reflect the action and
not the processed packet type.
2009-10-02 Werner Koch <wk@g10code.com>
* encr-data.c (decode_filter_context_s): Add fields PARTIAL and

4
g10/Makefile.am
View File

@ -79,13 +79,13 @@ gpg2_SOURCES = gpg.c \
pubkey-enc.c \
passphrase.c \
seckey-cert.c \
encr-data.c \
decrypt.c \
decrypt-data.c \
cipher.c \
encrypt.c \
sign.c \
verify.c \
revoke.c \
decrypt.c \
keyedit.c \
dearmor.c \
import.c \

2
g10/encr-data.c → g10/decrypt-data.c
View File

@ -1,4 +1,4 @@
/* encr-data.c - process an encrypted data packet
/* decrypt-data.c - Decrypt an encrypted data packet
* Copyright (C) 1998, 1999, 2000, 2001, 2005,
* 2006, 2009 Free Software Foundation, Inc.
*

67
g10/decrypt.c
View File

@ -97,6 +97,73 @@ decrypt_message (const char *filename)
}
/* Same as decrypt_message but takes a file descriptor for input and
output. */
gpg_error_t
decrypt_message_fd (int input_fd, int output_fd)
{
gpg_error_t err;
IOBUF fp;
armor_filter_context_t *afx = NULL;
progress_filter_context_t *pfx;
if (opt.outfp)
return gpg_error (GPG_ERR_BUG);
pfx = new_progress_context ();
/* Open the message file. */
fp = iobuf_open_fd_or_name (input_fd, NULL, "rb");
if (fp && is_secured_file (iobuf_get_fd (fp)))
{
iobuf_close (fp);
fp = NULL;
errno = EPERM;
}
if (!fp)
{
char xname[64];
err = gpg_error_from_syserror ();
snprintf (xname, sizeof xname, "[fd %d]", input_fd);
log_error (_("can't open `%s': %s\n"), xname, gpg_strerror (err));
release_progress_context (pfx);
return err;
}
opt.outfp = fdopen (dup (output_fd), "wb");
if (!opt.outfp)
{
char xname[64];
err = gpg_error_from_syserror ();
snprintf (xname, sizeof xname, "[fd %d]", output_fd);
log_error (_("can't open `%s': %s\n"), xname, gpg_strerror (err));
iobuf_close (fp);
release_progress_context (pfx);
return err;
}
if (!opt.no_armor)
{
if (use_armor_filter (fp))
{
afx = new_armor_context ();
push_armor_filter ( afx, fp );
}
}
err = proc_encryption_packets ( NULL, fp );
iobuf_close (fp);
fclose (opt.outfp);
opt.outfp = NULL;
release_armor_context (afx);
release_progress_context (pfx);
return err;
}
void
decrypt_messages (int nfiles, char *files[])
{

19
g10/encrypt.c
View File

@ -264,8 +264,7 @@ encrypt_simple (const char *filename, int mode, int use_seskey)
do_compress = 0;
}
if ( rc || (rc = open_outfile (GNUPG_INVALID_FD, filename,
opt.armor? 1:0, &out )))
if ( rc || (rc = open_outfile (-1, filename, opt.armor? 1:0, &out )))
{
iobuf_cancel (inp);
xfree (cfx.dek);
@ -462,9 +461,9 @@ write_symkey_enc (STRING2KEY *symkey_s2k, DEK *symkey_dek, DEK *dek,
* PROVIDED_PKS; if not the function builds a list of keys on its own.
*/
int
encrypt_crypt (gnupg_fd_t filefd, const char *filename,
encrypt_crypt (int filefd, const char *filename,
strlist_t remusr, int use_symkey, pk_list_t provided_keys,
gnupg_fd_t outputfd)
int outputfd)
{
iobuf_t inp = NULL;
iobuf_t out = NULL;
@ -482,7 +481,7 @@ encrypt_crypt (gnupg_fd_t filefd, const char *filename,
PK_LIST pk_list, work_list;
int do_compress;
if (filefd != GNUPG_INVALID_FD && filename)
if (filefd != -1 && filename)
return gpg_error (GPG_ERR_INV_ARG);
do_compress = opt.compress_algo && !RFC1991;
@ -539,7 +538,7 @@ encrypt_crypt (gnupg_fd_t filefd, const char *filename,
char xname[64];
rc = gpg_error_from_syserror ();
if (filefd != GNUPG_INVALID_FD)
if (filefd != -1)
snprintf (xname, sizeof xname, "[fd %d]", filefd);
else if (!filename)
strcpy (xname, "[stdin]");
@ -652,7 +651,7 @@ encrypt_crypt (gnupg_fd_t filefd, const char *filename,
if (!opt.no_literal)
pt = setup_plaintext_name (filename, inp);
if (filefd != GNUPG_INVALID_FD
if (filefd != -1
&& !iobuf_is_pipe_filename (filename) && *filename && !opt.textmode )
{
off_t tmpsize;
@ -964,8 +963,7 @@ encrypt_crypt_files (int nfiles, char **files, strlist_t remusr)
}
line[strlen(line)-1] = '\0';
print_file_status(STATUS_FILE_START, line, 2);
rc = encrypt_crypt (GNUPG_INVALID_FD, line, remusr, 0,
NULL, GNUPG_INVALID_FD);
rc = encrypt_crypt (-1, line, remusr, 0, NULL, -1);
if (rc)
log_error ("encryption of `%s' failed: %s\n",
print_fname_stdin(line), g10_errstr(rc) );
@ -977,8 +975,7 @@ encrypt_crypt_files (int nfiles, char **files, strlist_t remusr)
while (nfiles--)
{
print_file_status(STATUS_FILE_START, *files, 2);
if ( (rc = encrypt_crypt (GNUPG_INVALID_FD, *files, remusr, 0,
NULL, GNUPG_INVALID_FD)) )
if ( (rc = encrypt_crypt (-1, *files, remusr, 0, NULL, -1)) )
log_error("encryption of `%s' failed: %s\n",
print_fname_stdin(*files), g10_errstr(rc) );
write_status( STATUS_FILE_DONE );

6
g10/gpg.c
View File

@ -3434,8 +3434,7 @@ main (int argc, char **argv)
{
if( argc > 1 )
wrong_args(_("--encrypt [filename]"));
if( (rc = encrypt_crypt (GNUPG_INVALID_FD, fname,
remusr, 0, NULL, GNUPG_INVALID_FD)) )
if( (rc = encrypt_crypt (-1, fname, remusr, 0, NULL, -1)) )
log_error("%s: encryption failed: %s\n",
print_fname_stdin(fname), g10_errstr(rc) );
}
@ -3456,8 +3455,7 @@ main (int argc, char **argv)
" while in %s mode\n"),compliance_option_string());
else
{
if( (rc = encrypt_crypt (GNUPG_INVALID_FD, fname,
remusr, 1, NULL, GNUPG_INVALID_FD)) )
if( (rc = encrypt_crypt (-1, fname, remusr, 1, NULL, -1)) )
log_error("%s: encryption failed: %s\n",
print_fname_stdin(fname), g10_errstr(rc) );
}

7
g10/main.h
View File

@ -185,9 +185,9 @@ void display_online_help( const char *keyword );
int setup_symkey (STRING2KEY **symkey_s2k,DEK **symkey_dek);
int encrypt_symmetric (const char *filename );
int encrypt_store (const char *filename );
int encrypt_crypt (gnupg_fd_t filefd, const char *filename,
int encrypt_crypt (int filefd, const char *filename,
strlist_t remusr, int use_symkey, pk_list_t provided_keys,
gnupg_fd_t outputfd);
int outputfd);
void encrypt_crypt_files (int nfiles, char **files, strlist_t remusr);
int encrypt_filter (void *opaque, int control,
iobuf_t a, byte *buf, size_t *ret_len);
@ -245,7 +245,7 @@ int save_unprotected_key_to_card (PKT_secret_key *sk, int keyno);
int overwrite_filep( const char *fname );
char *make_outfile_name( const char *iname );
char *ask_outfile_name( const char *name, size_t namelen );
int open_outfile (gnupg_fd_t inp_fd, const char *iname, int mode, iobuf_t *a);
int open_outfile (int inp_fd, const char *iname, int mode, iobuf_t *a);
iobuf_t open_sigfile( const char *iname, progress_filter_context_t *pfx );
void try_make_homedir( const char *fname );
@ -319,6 +319,7 @@ int gpg_verify (ctrl_t ctrl, int sig_fd, int data_fd, FILE *out_fp);
/*-- decrypt.c --*/
int decrypt_message( const char *filename );
gpg_error_t decrypt_message_fd (int input_fd, int output_fd);
void decrypt_messages(int nfiles, char *files[]);
/*-- plaintext.c --*/

18
g10/openfile.c
View File

@ -178,24 +178,24 @@ ask_outfile_name( const char *name, size_t namelen )
* Mode 0 = use ".gpg"
* 1 = use ".asc"
* 2 = use ".sig"
* If INP_FD is not GNUPG_INVALID_FD the function will simply create
* an IOBUF for that file descriptor and ignore a INAME and MODE.
* Note that INP_FD won't be closed if the returned IOBUF is closed.
*
* If INP_FD is not -1 the function simply creates an IOBUF for that
* file descriptor and ignorea INAME and MODE. Note that INP_FD won't
* be closed if the returned IOBUF is closed.
*/
int
open_outfile (gnupg_fd_t inp_fd, const char *iname, int mode, iobuf_t *a)
open_outfile (int inp_fd, const char *iname, int mode, iobuf_t *a)
{
int rc = 0;
*a = NULL;
if (inp_fd != GNUPG_INVALID_FD)
if (inp_fd != -1)
{
char xname[64];
gnupg_fd_t fd2;
int fd2;
fd2 = INT2FD (dup (FD2INT (inp_fd)));
if (fd2 == GNUPG_INVALID_FD)
fd2 = dup (inp_fd);
if (fd2 == -1)
*a = NULL;
else
*a = iobuf_fdopen (fd2, "wb");

1
g10/options.h
View File

@ -43,6 +43,7 @@ struct
unsigned debug;
int armor;
char *outfile;
FILE *outfp; /* Hack, sometimes used in place of outfile. */
off_t max_output;
int dry_run;
int list_only;

4
g10/packet.h
View File

@ -289,8 +289,8 @@ typedef struct {
} PKT_compressed;
typedef struct {
u32 len; /* length of encrypted data */
int extralen; /* this is (blocksize+2) */
u32 len; /* Remaining length of encrypted data. */
int extralen; /* This is (blocksize+2). Used by build_packet. */
byte new_ctb; /* uses a new CTB */
byte is_partial; /* partial length encoded */
byte mdc_method; /* > 0: integrity protected encrypted data packet */

32
g10/plaintext.c
View File

@ -86,10 +86,13 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
/* Create the filename as C string. */
if (nooutput)
;
else if (opt.outfp)
{
fname = xstrdup ("[FP]");
}
else if (opt.outfile)
{
fname = xmalloc (strlen (opt.outfile) + 1);
strcpy (fname, opt.outfile);
fname = xstrdup (opt.outfile);
}
else if (pt->namelen == 8 && !memcmp (pt->name, "_CONSOLE", 8))
{
@ -112,6 +115,13 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
if (nooutput)
;
else if (opt.outfp)
{
fp = opt.outfp;
#ifdef HAVE_DOSISH_SYSTEM
setmode (fileno (fp), O_BINARY);
#endif
}
else if (iobuf_is_pipe_filename (fname) || !*fname)
{
/* No filename or "-" given; write to stdout. */
@ -138,7 +148,13 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
}
#ifndef __riscos__
if (fp || nooutput)
if (opt.outfp && is_secured_file (fileno (opt.outfp)))
{
rc = gpg_error (GPG_ERR_EPERM);
log_error (_("error creating `%s': %s\n"), fname, gpg_strerror (rc));
goto leave;
}
else if (fp || nooutput)
;
else if (is_secured_filename (fname))
{
@ -154,9 +170,9 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
goto leave;
}
#else /* __riscos__ */
/* If no output filename was given, i.e. we constructed it,
convert all '.' in fname to '/' but not vice versa as
we don't create directories! */
/* If no output filename was given, i.e. we constructed it, convert
all '.' in fname to '/' but not vice versa as we don't create
directories! */
if (!opt.outfile)
for (c = 0; fname[c]; ++c)
if (fname[c] == '.')
@ -418,7 +434,7 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
pt->buf = NULL;
}
if (fp && fp != stdout && fclose (fp))
if (fp && fp != stdout && fp != opt.outfp && fclose (fp))
{
rc = (errno ? gpg_error_from_syserror ()
: gpg_error (GPG_ERR_INTERNAL));
@ -434,7 +450,7 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
before checking the signature. */
fflush (stdout);
if (fp && fp != stdout)
if (fp && fp != stdout && fp != opt.outfp)
fclose (fp);
xfree (fname);
return rc;

2
g10/server.c
View File

@ -362,7 +362,7 @@ cmd_decrypt (assuan_context_t ctx, char *line)
if (out_fd == -1)
return set_error (GPG_ERR_ASS_NO_OUTPUT, NULL);
err = gpg_error (GPG_ERR_NOT_IMPLEMENTED);
err = decrypt_message_fd (inp_fd, out_fd);
/* Close and reset the fds. */
close_message_fd (ctrl);