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
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
-- Topal: GPG/GnuPG and Alpine/Pine integration
-- Copyright (C) 2001--2022 Phillip J. Brooke
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License version 3 as
-- published by the Free Software Foundation.
--
-- 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, see <http://www.gnu.org/licenses/>.
separate(Sending)
procedure Encrypt (Tmpfile : in String;
Non_Pine : in Boolean;
Mime : in Boolean;
Mimefile : in String;
Send_Keys : in Keys.Key_List;
Selection : in Send_Modes;
Mime_Selection : in MIME_Modes;
AL : in Attachments.Attachment_List;
Hdrfile : in String;
Recipients : in UBS_Array;
Actual_Send : in Boolean;
New_Headers : out UVV) is
Out_File : constant String := Temp_File_Name("out");
SFD_File : constant String := Temp_File_Name("sfd");
-- PCT = Prepend content-type.
begin
if Mime then
begin
Ada.Text_IO.New_Line(3);
if Mime_Selection = Multipart
or Mime_Selection = SMIME then
declare
PCT : constant String := Temp_File_Name("pct");
begin
Echo_Out("Content-Type: " & The_Content_Type(Hdrfile, Actual_Send), PCT);
Echo_Append("", PCT);
Cat_Append(Tmpfile, PCT);
Mv_F(PCT, Tmpfile);
-- Call out to attachments in case we have to modify Tmpfile.
Attachments.Replace_Tmpfile(Tmpfile, AL);
end;
end if;
exception
when others =>
Ada.Text_IO.Put_Line(Ada.Text_IO.Standard_Error,
"Exception raised in Sending.Encrypt (MIME block 1)");
raise;
end;
end if;
begin
if Mime_Selection = SMIME then
-- Run GPG.
Externals.GPG.GPGSM_Wrap_Encrypt(Out_File,
SFD_File,
Tmpfile,
Send_Keys);
else
-- Run GPG.
Externals.GPG.GPG_Wrap(" --armor --encrypt "
& " "
& " --output "
& Out_File
& " "
& Keys.Processed_Recipient_List(Send_Keys)
& " "
& Tmpfile,
Out_File,
SFD_File);
end if;
exception
when others =>
Ada.Text_IO.Put_Line(Ada.Text_IO.Standard_Error,
"Exception raised in Sending.Encrypt (GPG block)");
raise;
end;
begin
if Selection = EncryptPO then
-- Rename the file appropriately.
Mv_F(Out_File, Tmpfile & ".asc");
elsif Mime_Selection /= SMIME then
-- See later coments in S/MIME bit. Really, we'd like to
-- just send Out_File as Tmpfile for that case, too, but we
-- need to wrap it as a multipart/mixed file.
Mv_F(Out_File, Tmpfile);
end if;
exception
when others =>
Ada.Text_IO.Put_Line(Ada.Text_IO.Standard_Error,
"Exception raised in Sending.Encrypt (mv block)");
raise;
end;
if Mime then
begin
case Mime_Selection is
when InlinePlain => -- Inline plain text
Echo_Out("Content-Type: text/plain",
Mimefile);
New_Headers.Append(ToUBS("Content-Type: text/plain"));
when AppPGP => -- application/pgp
Echo_Out_N("Content-Type: application/pgp; format=text; x-action=encrypt ",
Mimefile);
New_Headers.Append(ToUBS("Content-Type: application/pgp; format=text; x-action=encrypt "));
when Multipart => -- RFC2015 multipart
-- This is the nasty one.
declare
Blk1 : constant String := Temp_File_Name("mp1");
Blk2 : constant String := Temp_File_Name("mp2");
MC : constant String := Temp_File_Name("mc");
begin
-- We first create the two blocks.
-- The first block is easy:
Echo_Out("Content-Type: application/pgp-encrypted",
Blk1);
Echo_Append("", Blk1);
Echo_Append("Version: 1", Blk1);
-- The second block starts with a
-- content-type, then is the tmpfile we've
-- put together.
Echo_Out("Content-Type: application/octet-stream",
Blk2);
Echo_Append("Content-Disposition: attachment; filename=""message.asc""", Blk2);
Echo_Append("", Blk2);
Cat_Append(Tmpfile, Blk2);
-- Now we put them together.
Externals.Mail.Mimeconstruct2(Part1_Filename => Blk1,
Part2_Filename => Blk2,
Output_Filename => MC,
Content_Type => "multipart/encrypted; protocol=""application/pgp-encrypted""",
Prolog => "This is an OpenPGP/MIME encrypted message (RFC2440, RFC3156).");
-- Now we need to split these up.
Mail.Extract_Content_Type_From_Header(MC, Mimefile);
New_Headers.Append(Read_Fold(Mimefile));
Mail.Extract_Body(MC, Tmpfile);
end;
when MultipartEncap =>
Error("Menu should not have allowed MultipartEncap here");
when SMIME =>
-- At this point, we've got Out_File. We want it to be
-- CTE b64 and "Content-Type: application/pkcs7-mime;
-- smime-type=enveloped-data; name=""smime.p7m".
-- So we produce a single multipart mixed blob instead.
declare
MM : constant String := Temp_File_Name("mm");
MM2 : constant String := Temp_File_Name("mm2");
begin
if Actual_Send then
New_Headers.Append(ToUBS("Content-Type: application/pkcs7-mime; smime-type=enveloped-data; name=""smime.p7m"""));
New_Headers.Append(ToUBS("Content-Transfer-Encoding: base64"));
New_Headers.Append(ToUBS("Content-Disposition: attachment; filename=""smime.p7m"""));
New_Headers.Append(ToUBS("Content-Description: S/MIME cryptographically encrypted message"));
Externals.Simple.Mv_F(Out_File, Tmpfile);
else
Echo_Out("Content-Type: application/pkcs7-mime; smime-type=enveloped-data; name=""smime.p7m""",
MM);
Echo_Append("Content-Transfer-Encoding: base64",
MM);
Echo_Append("Content-Disposition: attachment; filename=""smime.p7m""",
MM);
Echo_Append("Content-Description: S/MIME cryptographically encrypted message",
MM);
Echo_Append("", MM);
Cat_Append(Out_File, MM);
Mail.Mimeconstruct_Mixed(UBS_Array'(1 => ToUBS(MM)),
MM2);
Mail.Extract_Content_Type_From_Header(MM2, Mimefile);
New_Headers.Append(Read_Fold(Mimefile));
Mail.Extract_Body(MM2, Tmpfile);
end if;
end;
end case;
exception
when others =>
Ada.Text_IO.Put_Line(Ada.Text_IO.Standard_Error,
"Exception raised in Sending.Encrypt (MIME block 2)");
raise;
end;
end if;
if not Actual_Send then
Check_Send(Tmpfile, Non_Pine, Mime, Mimefile, Hdrfile, Recipients);
end if;
exception
when others =>
Ada.Text_IO.Put_Line(Ada.Text_IO.Standard_Error,
"Exception raised in Sending.Encrypt");
raise;
end Encrypt;
|
