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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/* vi: set sw=4 ts=4: */
/*
* makemime: create MIME-encoded message
* reformime: parse MIME-encoded message
*
* Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
//kbuild:lib-$(CONFIG_MAKEMIME) += makemime.o mail.o
#include "libbb.h"
#include "mail.h"
#if 0
# define dbg_error_msg(...) bb_error_msg(__VA_ARGS__)
#else
# define dbg_error_msg(...) ((void)0)
#endif
/*
makemime -c type [-o file] [-e encoding] [-C charset] [-N name] \
[-a "Header: Contents"] file
-m [ type ] [-o file] [-e encoding] [-a "Header: Contents"] file
-j [-o file] file1 file2
@file
file: filename - read or write from filename
- - read or write from stdin or stdout
&n - read or write from file descriptor n
\( opts \) - read from child process, that generates [ opts ]
Options:
-c type - create a new MIME section from "file" with this
Content-Type: (default is application/octet-stream).
-C charset - MIME charset of a new text/plain section.
-N name - MIME content name of the new mime section.
-m [ type ] - create a multipart mime section from "file" of this
Content-Type: (default is multipart/mixed).
-e encoding - use the given encoding (7bit, 8bit, quoted-printable,
or base64), instead of guessing. Omit "-e" and use
-c auto to set Content-Type: to text/plain or
application/octet-stream based on picked encoding.
-j file1 file2 - join mime section file2 to multipart section file1.
-o file - write the result to file, instead of stdout (not
allowed in child processes).
-a header - prepend an additional header to the output.
@file - read all of the above options from file, one option or
value on each line.
{which version of makemime is this? What do we support?}
*/
/* man makemime:
* -c TYPE: create a (non-multipart) MIME section with Content-Type: TYPE
* makemime -c TYPE [-e ENCODING] [-o OUTFILE] [-C CHARSET] [-N NAME] [-a HEADER...] FILE
* The -C option sets the MIME charset attribute for text/plain content.
* The -N option sets the name attribute for Content-Type:
* Encoding must be one of the following: 7bit, 8bit, quoted-printable, or base64.
* -m multipart/TYPE: create a multipart MIME collection with Content-Type: multipart/TYPE
* makemime -m multipart/TYPE [-e ENCODING] [-o OUTFILE] [-a HEADER...] FILE
* Type must be either "multipart/mixed", "multipart/alternative", or some other MIME multipart content type.
* Additionally, encoding can only be "7bit" or "8bit", and will default to "8bit" if not specified.
* Finally, filename must be a MIME-formatted section, NOT a regular file.
* The -m option creates an initial multipart MIME collection, that contains only one MIME section, taken from filename.
* The collection is written to standard output, or the pipe or to outputfile.
* -j FILE1: add a section to a multipart MIME collection
* makemime -j FILE1 [-o OUTFILE] FILE2
* FILE1 must be a MIME collection that was previously created by the -m option.
* FILE2 must be a MIME section that was previously created by the -c option.
* The -j options adds the MIME section in FILE2 to the MIME collection in FILE1.
*/
/* In busybox 1.15.0.svn, makemime generates output like this
* (empty lines are shown exactly!):
{headers added with -a HDR}
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="24269534-2145583448-1655890676"
--24269534-2145583448-1655890676
Content-Type: {set by -c, e.g. text/plain}; charset={set by -C, e.g. us-ascii}
Content-Disposition: inline; filename="A"
Content-Transfer-Encoding: base64
...file A contents...
--24269534-2145583448-1655890676
Content-Type: {set by -c, e.g. text/plain}; charset={set by -C, e.g. us-ascii}
Content-Disposition: inline; filename="B"
Content-Transfer-Encoding: base64
...file B contents...
--24269534-2145583448-1655890676--
*
* For reference: here is an example email to LKML which has
* 1st unnamed part (so it serves as an email body)
* and one attached file:
...other headers...
Content-Type: multipart/mixed; boundary="=-tOfTf3byOS0vZgxEWcX+"
...other headers...
Mime-Version: 1.0
...other headers...
--=-tOfTf3byOS0vZgxEWcX+
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
...email text...
...email text...
--=-tOfTf3byOS0vZgxEWcX+
Content-Disposition: attachment; filename="xyz"
Content-Type: text/plain; name="xyz"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
...file contents...
...file contents...
--=-tOfTf3byOS0vZgxEWcX+--
...random junk added by mailing list robots and such...
*/
//usage:#define makemime_trivial_usage
//usage: "[OPTIONS] [FILE]..."
//usage:#define makemime_full_usage "\n\n"
//usage: "Create multipart MIME-encoded message from FILEs\n"
/* //usage: "Transfer encoding is base64, disposition is inline (not attachment)\n" */
//usage: "\n -o FILE Output. Default: stdout"
//usage: "\n -a HDR Add header. Examples:"
//usage: "\n \"From: user@host.org\", \"Date: `date -R`\""
//usage: "\n -c CT Content type. Default: text/plain"
//usage: "\n -C CS Charset. Default: " CONFIG_FEATURE_MIME_CHARSET
/* //usage: "\n -e ENC Transfer encoding. Ignored. base64 is assumed" */
//usage: "\n"
//usage: "\nOther options are silently ignored"
int makemime_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int makemime_main(int argc UNUSED_PARAM, char **argv)
{
llist_t *opt_headers = NULL, *l;
const char *opt_output;
const char *content_type = "application/octet-stream";
#define boundary opt_output
enum {
OPT_c = 1 << 0, // create (non-multipart) section
OPT_e = 1 << 1, // Content-Transfer-Encoding. Ignored. Assumed base64
OPT_o = 1 << 2, // output to
OPT_C = 1 << 3, // charset
OPT_N = 1 << 4, // COMPAT
OPT_a = 1 << 5, // additional headers
//OPT_m = 1 << 6, // create mutipart section
//OPT_j = 1 << 7, // join section to multipart section
};
INIT_G();
// parse options
opt_complementary = "a::";
opts = getopt32(argv,
"c:e:o:C:N:a:", //:m:j:",
&content_type, NULL, &opt_output, &G.opt_charset, NULL, &opt_headers //, NULL, NULL
);
//argc -= optind;
argv += optind;
// respect -o output
if (opts & OPT_o)
freopen(opt_output, "w", stdout);
// no files given on command line? -> use stdin
if (!*argv)
*--argv = (char *)"-";
// put additional headers
for (l = opt_headers; l; l = l->link)
puts(l->data);
// make a random string -- it will delimit message parts
srand(monotonic_us());
boundary = xasprintf("%u-%u-%u",
(unsigned)rand(), (unsigned)rand(), (unsigned)rand());
// put multipart header
printf(
"Mime-Version: 1.0\n"
"Content-Type: multipart/mixed; boundary=\"%s\"\n"
, boundary
);
// put attachments
while (*argv) {
printf(
"\n--%s\n"
"Content-Type: %s; charset=%s\n"
"Content-Disposition: inline; filename=\"%s\"\n"
"Content-Transfer-Encoding: base64\n"
, boundary
, content_type
, G.opt_charset
, bb_get_last_path_component_strip(*argv)
);
encode_base64(*argv++, (const char *)stdin, "");
}
// put multipart footer
printf("\n--%s--\n" "\n", boundary);
return EXIT_SUCCESS;
#undef boundary
}
|
