copy/rename the mail specific password stuff here.

2001-09-30  Chris Toshok  <toshok@ximian.com>

	* e-passwords.c: copy/rename the mail specific password stuff
	here.

	* e-passwords.h: same.

svn path=/trunk/; revision=13252

3 files changed, 398 insertions, 0 deletions

diff --git a/e-util/ChangeLog b/e-util/ChangeLog
index ace42f88d9..fca9e37fbc 100644
--- a/e-util/ChangeLog
+++ b/e-util/ChangeLog
@@ -1,3 +1,10 @@
+2001-09-30  Chris Toshok  <toshok@ximian.com>
+
+	* e-passwords.c: copy/rename the mail specific password stuff
+	here.
+
+	* e-passwords.h: same.
+
 2001-09-28    <NotZed@Ximian.com>
 
 	* e-msgport.c (e_msgport_put): Write the pipe notification outside
diff --git a/e-util/e-passwords.c b/e-util/e-passwords.c
new file mode 100644
index 0000000000..c1de3fc44e
--- /dev/null
+++ b/e-util/e-passwords.c
@@ -0,0 +1,344 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ * e-passwords.c
+ *
+ * Copyright (C) 2001 Ximian, Inc.
+ */
+
+/*
+ * This program 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.
+ * 
+ * This program 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.
+ */
+
+#include "e-passwords.h"
+#include <libgnome/gnome-config.h>
+
+static char *decode_base64 (char *base64);
+
+static GHashTable *passwords = NULL;
+
+static int base64_encode_close(unsigned char *in, int inlen, gboolean break_lines, unsigned char *out, int *state, int *save);
+static int base64_encode_step(unsigned char *in, int len, gboolean break_lines, unsigned char *out, int *state, int *save);
+
+void
+e_passwords_init ()
+{
+	char *key, *value;
+	void *iter;
+
+	passwords = g_hash_table_new (g_str_hash, g_str_equal);
+
+	iter = gnome_config_private_init_iterator ("/Evolution/Passwords");
+	if (iter) {
+		while (gnome_config_iterator_next (iter, &key, &value)) {
+			g_hash_table_insert (passwords,
+					     decode_base64 (key),
+					     decode_base64 (value));
+			g_free (key);
+			g_free (value);
+		}
+	}
+}
+
+static gboolean
+free_entry (gpointer key, gpointer value, gpointer user_data)
+{
+	g_free (key);
+	memset (value, 0, strlen (value));
+	g_free (value);
+	return TRUE;
+}
+
+void
+e_passwords_shutdown ()
+{
+	gnome_config_sync ();
+	g_hash_table_foreach_remove (passwords, free_entry, NULL);
+	g_hash_table_destroy (passwords);
+	passwords = NULL;
+}
+
+
+void
+e_passwords_forget_passwords ()
+{
+	g_hash_table_foreach_remove (passwords, free_entry, NULL);
+	gnome_config_private_clean_section ("/Evolution/Passwords");
+	gnome_config_sync ();
+}
+
+static void
+maybe_remember_password (gpointer key, gpointer password, gpointer url)
+{
+	char *path, *key64, *pass64;
+	int len, state, save;
+	
+	len = strlen (url);
+	if (strncmp (key, url, len) != 0)
+		return;
+	
+	len = strlen (key);
+	key64 = g_malloc0 ((len + 2) * 4 / 3 + 1);
+	state = save = 0;
+	base64_encode_close (key, len, FALSE, key64, &state, &save);
+	path = g_strdup_printf ("/Evolution/Passwords/%s", key64);
+	g_free (key64);
+	
+	len = strlen (password);
+	pass64 = g_malloc0 ((len + 2) * 4 / 3 + 1);
+	state = save = 0;
+	base64_encode_close (password, len, FALSE, pass64, &state, &save);
+	
+	gnome_config_private_set_string (path, pass64);
+	g_free (path);
+	g_free (pass64);
+}
+
+void
+e_passwords_remember_password (const char *url)
+{
+	g_hash_table_foreach (passwords, maybe_remember_password, (gpointer)url);
+}
+
+void
+e_passwords_forget_password (const char *key)
+{
+	gpointer okey, value;
+	
+	if (g_hash_table_lookup_extended (passwords, key, &okey, &value)) {
+		g_hash_table_remove (passwords, key);
+		memset (value, 0, strlen (value));
+		g_free (okey);
+		g_free (value);
+	}
+}
+
+const char *
+e_passwords_get_password (const char *key)
+{
+	return g_hash_table_lookup (passwords, key);
+}
+
+void
+e_passwords_add_password (const char *key, const char *passwd)
+{
+	g_hash_table_insert (passwords, (gpointer)key, (gpointer)passwd);
+}
+
+static char *base64_alphabet =
+"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static unsigned char camel_mime_base64_rank[256] = {
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63,
+	 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255,  0,255,255,
+	255,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
+	 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255,
+	255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+	 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+};
+
+/* call this when finished encoding everything, to
+   flush off the last little bit */
+static int
+base64_encode_close(unsigned char *in, int inlen, gboolean break_lines, unsigned char *out, int *state, int *save)
+{
+	int c1, c2;
+	unsigned char *outptr = out;
+
+	if (inlen>0)
+		outptr += base64_encode_step(in, inlen, break_lines, outptr, state, save);
+
+	c1 = ((unsigned char *)save)[1];
+	c2 = ((unsigned char *)save)[2];
+	
+	switch (((char *)save)[0]) {
+	case 2:
+		outptr[2] = base64_alphabet[ ( (c2 &0x0f) << 2 ) ];
+		g_assert(outptr[2] != 0);
+		goto skip;
+	case 1:
+		outptr[2] = '=';
+	skip:
+		outptr[0] = base64_alphabet[ c1 >> 2 ];
+		outptr[1] = base64_alphabet[ c2 >> 4 | ( (c1&0x3) << 4 )];
+		outptr[3] = '=';
+		outptr += 4;
+		break;
+	}
+	if (break_lines)
+		*outptr++ = '\n';
+
+	*save = 0;
+	*state = 0;
+
+	return outptr-out;
+}
+
+/*
+  performs an 'encode step', only encodes blocks of 3 characters to the
+  output at a time, saves left-over state in state and save (initialise to
+  0 on first invocation).
+*/
+static int
+base64_encode_step(unsigned char *in, int len, gboolean break_lines, unsigned char *out, int *state, int *save)
+{
+	register unsigned char *inptr, *outptr;
+
+	if (len<=0)
+		return 0;
+
+	inptr = in;
+	outptr = out;
+
+	if (len + ((char *)save)[0] > 2) {
+		unsigned char *inend = in+len-2;
+		register int c1, c2, c3;
+		register int already;
+
+		already = *state;
+
+		switch (((char *)save)[0]) {
+		case 1:	c1 = ((unsigned char *)save)[1]; goto skip1;
+		case 2:	c1 = ((unsigned char *)save)[1];
+			c2 = ((unsigned char *)save)[2]; goto skip2;
+		}
+		
+		/* yes, we jump into the loop, no i'm not going to change it, it's beautiful! */
+		while (inptr < inend) {
+			c1 = *inptr++;
+		skip1:
+			c2 = *inptr++;
+		skip2:
+			c3 = *inptr++;
+			*outptr++ = base64_alphabet[ c1 >> 2 ];
+			*outptr++ = base64_alphabet[ c2 >> 4 | ( (c1&0x3) << 4 ) ];
+			*outptr++ = base64_alphabet[ ( (c2 &0x0f) << 2 ) | (c3 >> 6) ];
+			*outptr++ = base64_alphabet[ c3 & 0x3f ];
+			/* this is a bit ugly ... */
+			if (break_lines && (++already)>=19) {
+				*outptr++='\n';
+				already = 0;
+			}
+		}
+
+		((char *)save)[0] = 0;
+		len = 2-(inptr-inend);
+		*state = already;
+	}
+
+	if (len>0) {
+		register char *saveout;
+
+		/* points to the slot for the next char to save */
+		saveout = & (((char *)save)[1]) + ((char *)save)[0];
+
+		/* len can only be 0 1 or 2 */
+		switch(len) {
+		case 2:	*saveout++ = *inptr++;
+		case 1:	*saveout++ = *inptr++;
+		}
+		((char *)save)[0]+=len;
+	}
+
+	return outptr-out;
+}
+
+
+/**
+ * base64_decode_step: decode a chunk of base64 encoded data
+ * @in: input stream
+ * @len: max length of data to decode
+ * @out: output stream
+ * @state: holds the number of bits that are stored in @save
+ * @save: leftover bits that have not yet been decoded
+ *
+ * Decodes a chunk of base64 encoded data
+ **/
+static int
+base64_decode_step(unsigned char *in, int len, unsigned char *out, int *state, unsigned int *save)
+{
+	register unsigned char *inptr, *outptr;
+	unsigned char *inend, c;
+	register unsigned int v;
+	int i;
+
+	inend = in+len;
+	outptr = out;
+
+	/* convert 4 base64 bytes to 3 normal bytes */
+	v=*save;
+	i=*state;
+	inptr = in;
+	while (inptr<inend) {
+		c = camel_mime_base64_rank[*inptr++];
+		if (c != 0xff) {
+			v = (v<<6) | c;
+			i++;
+			if (i==4) {
+				*outptr++ = v>>16;
+				*outptr++ = v>>8;
+				*outptr++ = v;
+				i=0;
+			}
+		}
+	}
+
+	*save = v;
+	*state = i;
+
+	/* quick scan back for '=' on the end somewhere */
+	/* fortunately we can drop 1 output char for each trailing = (upto 2) */
+	i=2;
+	while (inptr>in && i) {
+		inptr--;
+		if (camel_mime_base64_rank[*inptr] != 0xff) {
+			if (*inptr == '=')
+				outptr--;
+			i--;
+		}
+	}
+
+	/* if i!= 0 then there is a truncation error! */
+	return outptr-out;
+}
+
+static char *
+decode_base64 (char *base64)
+{
+	char *plain, *pad = "==";
+	int len, out, state, save;
+	
+	len = strlen (base64);
+	plain = g_malloc0 (len);
+	state = save = 0;
+	out = base64_decode_step (base64, len, plain, &state, &save);
+	if (len % 4) {
+		base64_decode_step (pad, 4 - len % 4, plain + out,
+				    &state, &save);
+	}
+	
+	return plain;
+}
diff --git a/e-util/e-passwords.h b/e-util/e-passwords.h
new file mode 100644
index 0000000000..7b675b964e
--- /dev/null
+++ b/e-util/e-passwords.h
@@ -0,0 +1,47 @@
+/*
+ * e-passwords.h
+ *
+ * Copyright (C) 2001 Ximian, Inc.
+ */
+
+/*
+ * This program 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.
+ * 
+ * This program 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.
+ */
+
+#ifndef _E_PASSWORD_H_
+#define _E_PASSWORD_H_
+
+#include <glib.h>
+#include <bonobo/bonobo-ui-component.h>
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus */
+
+void        e_passwords_init              (void);
+void        e_passwords_shutdown          (void);
+void        e_passwords_remember_password (const char *key);
+void        e_passwords_add_password      (const char *key, const char *passwd);
+const char *e_passwords_get_password      (const char *key);
+void        e_passwords_forget_password   (const char *key);
+void        e_passwords_forget_passwords  (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _E_PASSWORD_H_ */