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authorWerner Koch <[email protected]>2004-02-18 16:57:38 +0000
committerWerner Koch <[email protected]>2004-02-18 16:57:38 +0000
commitbda3467067cb93de9a86b8cad17e20c3f0558d0c (patch)
tree85d57ec155bec7789647f9ee9303fb34c9dd696c /agent/simple-pwquery.c
parent* gpgsm.c: Fixed value parsing for --with-validation. (diff)
downloadgnupg-bda3467067cb93de9a86b8cad17e20c3f0558d0c.tar.gz
gnupg-bda3467067cb93de9a86b8cad17e20c3f0558d0c.zip
* protect-tool.c (main): Setup the used character set.
* gpg-agent.c (main): Ditto. * gpg-agent.c (set_debug): New. New option --debug-level. (main): New option --gpgconf-list.
Diffstat (limited to 'agent/simple-pwquery.c')
-rw-r--r--agent/simple-pwquery.c486
1 files changed, 0 insertions, 486 deletions
diff --git a/agent/simple-pwquery.c b/agent/simple-pwquery.c
deleted file mode 100644
index e870122cb..000000000
--- a/agent/simple-pwquery.c
+++ /dev/null
@@ -1,486 +0,0 @@
-/* simple-pwquery.c - A simple password query client for gpg-agent
- * Copyright (C) 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
- */
-
-/* This module is intended as a standalone client implementation to
- gpg-agent's GET_PASSPHRASE command. In particular it does not use
- the Assuan library and can only cope with an already running
- gpg-agent. Some stuff is configurable in the header file. */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#ifdef HAVE_LOCALE_H
-#include <locale.h>
-#endif
-
-#define SIMPLE_PWQUERY_IMPLEMENTATION 1
-#include "simple-pwquery.h"
-
-#if defined(SPWQ_USE_LOGGING) && !defined(HAVE_JNLIB_LOGGING)
-# undef SPWQ_USE_LOGGING
-#endif
-
-#ifndef _
-#define _(a) (a)
-#endif
-
-#if !defined (hexdigitp) && !defined (xtoi_2)
-#define digitp(p) (*(p) >= '0' && *(p) <= '9')
-#define hexdigitp(a) (digitp (a) \
- || (*(a) >= 'A' && *(a) <= 'F') \
- || (*(a) >= 'a' && *(a) <= 'f'))
-#define xtoi_1(p) (*(p) <= '9'? (*(p)- '0'): \
- *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
-#define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p)+1))
-#endif
-
-
-/* Write NBYTES of BUF to file descriptor FD. */
-static int
-writen (int fd, const void *buf, size_t nbytes)
-{
- size_t nleft = nbytes;
- int nwritten;
-
- while (nleft > 0)
- {
- nwritten = write( fd, buf, nleft );
- if (nwritten < 0)
- {
- if (errno == EINTR)
- nwritten = 0;
- else {
-#ifdef SPWQ_USE_LOGGING
- log_error ("write failed: %s\n", strerror (errno));
-#endif
- return SPWQ_IO_ERROR;
- }
- }
- nleft -= nwritten;
- buf = (const char*)buf + nwritten;
- }
-
- return 0;
-}
-
-
-/* Read an entire line and return number of bytes read. */
-static int
-readline (int fd, char *buf, size_t buflen)
-{
- size_t nleft = buflen;
- char *p;
- int nread = 0;
-
- while (nleft > 0)
- {
- int n = read (fd, buf, nleft);
- if (n < 0)
- {
- if (errno == EINTR)
- continue;
- return -(SPWQ_IO_ERROR);
- }
- else if (!n)
- {
- return -(SPWQ_PROTOCOL_ERROR); /* incomplete line */
- }
- p = buf;
- nleft -= n;
- buf += n;
- nread += n;
-
- for (; n && *p != '\n'; n--, p++)
- ;
- if (n)
- {
- break; /* at least one full line available - that's enough.
- This function is just a simple implementation, so
- it is okay to forget about pending bytes */
- }
- }
-
- return nread;
-}
-
-
-/* Send an option to the agent */
-static int
-agent_send_option (int fd, const char *name, const char *value)
-{
- char buf[200];
- int nread;
- char *line;
- int i;
-
- line = spwq_malloc (7 + strlen (name) + 1 + strlen (value) + 2);
- if (!line)
- return SPWQ_OUT_OF_CORE;
- strcpy (stpcpy (stpcpy (stpcpy (
- stpcpy (line, "OPTION "), name), "="), value), "\n");
- i = writen (fd, line, strlen (line));
- spwq_free (line);
- if (i)
- return i;
-
- /* get response */
- nread = readline (fd, buf, DIM(buf)-1);
- if (nread < 0)
- return -nread;
- if (nread < 3)
- return SPWQ_PROTOCOL_ERROR;
-
- if (buf[0] == 'O' && buf[1] == 'K' && (buf[2] == ' ' || buf[2] == '\n'))
- return 0; /* okay */
-
- return SPWQ_ERR_RESPONSE;
-}
-
-
-/* Send all available options to the agent. */
-static int
-agent_send_all_options (int fd)
-{
- char *dft_display = NULL;
- char *dft_ttyname = NULL;
- char *dft_ttytype = NULL;
- int rc = 0;
-
- dft_display = getenv ("DISPLAY");
- if (dft_display)
- {
- if ((rc = agent_send_option (fd, "display", dft_display)))
- return rc;
- }
-
- dft_ttyname = getenv ("GPG_TTY");
- if ((!dft_ttyname || !*dft_ttyname) && ttyname (0))
- dft_ttyname = ttyname (0);
- if (dft_ttyname && *dft_ttyname)
- {
- if ((rc=agent_send_option (fd, "ttyname", dft_ttyname)))
- return rc;
- }
-
- dft_ttytype = getenv ("TERM");
- if (dft_ttyname && dft_ttytype)
- {
- if ((rc = agent_send_option (fd, "ttytype", dft_ttytype)))
- return rc;
- }
-
-#if defined(HAVE_SETLOCALE)
- {
- char *old_lc = NULL;
- char *dft_lc = NULL;
-
-#if defined(LC_CTYPE)
- old_lc = setlocale (LC_CTYPE, NULL);
- if (old_lc)
- {
- char *p = spwq_malloc (strlen (old_lc)+1);
- if (!p)
- return SPWQ_OUT_OF_CORE;
- strcpy (p, old_lc);
- old_lc = p;
- }
- dft_lc = setlocale (LC_CTYPE, "");
- if (dft_ttyname && dft_lc)
- rc = agent_send_option (fd, "lc-ctype", dft_lc);
- if (old_lc)
- {
- setlocale (LC_CTYPE, old_lc);
- spwq_free (old_lc);
- }
- if (rc)
- return rc;
-#endif
-
-#if defined(LC_MESSAGES)
- old_lc = setlocale (LC_MESSAGES, NULL);
- if (old_lc)
- {
- char *p = spwq_malloc (strlen (old_lc)+1);
- if (!p)
- return SPWQ_OUT_OF_CORE;
- strcpy (p, old_lc);
- old_lc = p;
- }
- dft_lc = setlocale (LC_MESSAGES, "");
- if (dft_ttyname && dft_lc)
- rc = agent_send_option (fd, "lc-messages", dft_lc);
- if (old_lc)
- {
- setlocale (LC_MESSAGES, old_lc);
- spwq_free (old_lc);
- }
- if (rc)
- return rc;
-#endif
- }
-#endif /*HAVE_SETLOCALE*/
-
- return 0;
-}
-
-
-
-/* Try to open a connection to the agent, send all options and return
- the file descriptor for the connection. Return -1 in case of
- error. */
-static int
-agent_open (int *rfd)
-{
- int rc;
- int fd;
- char *infostr, *p;
- struct sockaddr_un client_addr;
- size_t len;
- int prot;
- char line[200];
- int nread;
-
- *rfd = -1;
- infostr = getenv ( "GPG_AGENT_INFO" );
- if ( !infostr )
- {
-#ifdef SPWQ_USE_LOGGING
- log_error (_("gpg-agent is not available in this session\n"));
-#endif
- return SPWQ_NO_AGENT;
- }
-
- if ( !(p = strchr ( infostr, ':')) || p == infostr
- || (p-infostr)+1 >= sizeof client_addr.sun_path )
- {
-#ifdef SPWQ_USE_LOGGING
- log_error ( _("malformed GPG_AGENT_INFO environment variable\n"));
-#endif
- return SPWQ_NO_AGENT;
- }
- *p++ = 0;
-
- while (*p && *p != ':')
- p++;
- prot = *p? atoi (p+1) : 0;
- if ( prot != 1)
- {
-#ifdef SPWQ_USE_LOGGING
- log_error (_("gpg-agent protocol version %d is not supported\n"),prot);
-#endif
- return SPWQ_PROTOCOL_ERROR;
- }
-
- if( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1 )
- {
-#ifdef SPWQ_USE_LOGGING
- log_error ("can't create socket: %s\n", strerror(errno) );
-#endif
- return SPWQ_SYS_ERROR;
- }
-
- memset (&client_addr, 0, sizeof client_addr);
- client_addr.sun_family = AF_UNIX;
- strcpy (client_addr.sun_path, infostr);
- len = (offsetof (struct sockaddr_un, sun_path)
- + strlen(client_addr.sun_path) + 1);
-
- if (connect (fd, (struct sockaddr*)&client_addr, len ) == -1)
- {
-#ifdef SPWQ_USE_LOGGING
- log_error ( _("can't connect to `%s': %s\n"), infostr, strerror (errno));
-#endif
- close (fd );
- return SPWQ_IO_ERROR;
- }
-
- nread = readline (fd, line, DIM(line));
- if (nread < 3 || !(line[0] == 'O' && line[1] == 'K'
- && (line[2] == '\n' || line[2] == ' ')) )
- {
-#ifdef SPWQ_USE_LOGGING
- log_error ( _("communication problem with gpg-agent\n"));
-#endif
- close (fd );
- return SPWQ_PROTOCOL_ERROR;
- }
-
- rc = agent_send_all_options (fd);
- if (rc)
- {
-#ifdef SPWQ_USE_LOGGING
- log_error (_("problem setting the gpg-agent options\n"));
-#endif
- close (fd);
- return rc;
- }
-
- *rfd = fd;
- return 0;
-}
-
-
-/* Copy text to BUFFER and escape as required. Return a poiinter to
- the end of the new buffer. NOte that BUFFER must be large enough
- to keep the entire text; allocataing it 3 times the size of TEXT
- is sufficient. */
-static char *
-copy_and_escape (char *buffer, const char *text)
-{
- int i;
- char *p = buffer;
-
- for (i=0; text[i]; i++)
- {
- if (text[i] < ' ' || text[i] == '+')
- {
- sprintf (p, "%%%02X", text[i]);
- p += 3;
- }
- else if (text[i] == ' ')
- *p++ = '+';
- else
- *p++ = text[i];
- }
- return p;
-}
-
-
-/* Ask the gpg-agent for a passphrase and present the user with a
- DESCRIPTION, a PROMPT and optiaonlly with a TRYAGAIN extra text.
- If a CACHEID is not NULL it is used to locate the passphrase in in
- the cache and store it under this ID. If ERRORCODE is not NULL it
- should point a variable receiving an errorcode; thsi errocode might
- be 0 if the user canceled the operation. The function returns NULL
- to indicate an error. */
-char *
-simple_pwquery (const char *cacheid,
- const char *tryagain,
- const char *prompt,
- const char *description,
- int *errorcode)
-{
- int fd = -1;
- int nread;
- char *result = NULL;
- char *pw = NULL;
- char *p;
- int rc, i;
-
- rc = agent_open (&fd);
- if (rc)
- goto leave;
-
- if (!cacheid)
- cacheid = "X";
- if (!tryagain)
- tryagain = "X";
- if (!prompt)
- prompt = "X";
- if (!description)
- description = "X";
-
- {
- char *line;
- /* We allocate 3 times the needed space so that there is enough
- space for escaping. */
- line = spwq_malloc (15
- + 3*strlen (cacheid) + 1
- + 3*strlen (tryagain) + 1
- + 3*strlen (prompt) + 1
- + 3*strlen (description) + 1
- + 2);
- if (!line)
- {
- rc = SPWQ_OUT_OF_CORE;
- goto leave;
- }
- strcpy (line, "GET_PASSPHRASE ");
- p = line+15;
- p = copy_and_escape (p, cacheid);
- *p++ = ' ';
- p = copy_and_escape (p, tryagain);
- *p++ = ' ';
- p = copy_and_escape (p, prompt);
- *p++ = ' ';
- p = copy_and_escape (p, description);
- *p++ = '\n';
- rc = writen (fd, line, p - line);
- spwq_free (line);
- if (rc)
- goto leave;
- }
-
- /* get response */
- pw = spwq_secure_malloc (500);
- nread = readline (fd, pw, 499);
- if (nread < 0)
- {
- rc = -nread;
- goto leave;
- }
- if (nread < 3)
- {
- rc = SPWQ_PROTOCOL_ERROR;
- goto leave;
- }
-
- if (pw[0] == 'O' && pw[1] == 'K' && pw[2] == ' ')
- { /* we got a passphrase - convert it back from hex */
- size_t pwlen = 0;
-
- for (i=3; i < nread && hexdigitp (pw+i); i+=2)
- pw[pwlen++] = xtoi_2 (pw+i);
- pw[pwlen] = 0; /* make a C String */
- result = pw;
- pw = NULL;
- }
- else if (nread > 7 && !memcmp (pw, "ERR 111", 7)
- && (pw[7] == ' ' || pw[7] == '\n') )
- {
-#ifdef SPWQ_USE_LOGGING
- log_info (_("canceled by user\n") );
-#endif
- *errorcode = 0; /* canceled */
- }
- else
- {
-#ifdef SPWQ_USE_LOGGING
- log_error (_("problem with the agent\n"));
-#endif
- rc = SPWQ_ERR_RESPONSE;
- }
-
- leave:
- if (errorcode)
- *errorcode = rc;
- if (fd != -1)
- close (fd);
- if (pw)
- spwq_free (pw);
- return result;
-}