| /* vi: set sw=4 ts=4: */ |
| /* |
| * makemime: create 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: application/octet-stream" |
| //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" |
| |
| /* |
| * -c [Content-Type] should create just one MIME section |
| * with "Content-Type:", "Content-Transfer-Encoding:", and HDR from "-a HDR". |
| * NB: without "Content-Disposition:" auto-added, unlike we do now |
| * NB2: -c has *optional* param which nevertheless _can_ be specified after a space :( |
| * |
| * -m [multipart/mixed] should create multipart MIME section |
| * with "Content-Type:", "Content-Transfer-Encoding:", and HDR from "-a HDR", |
| * and add FILE to it _verbatim_: |
| * HEADERS |
| * |
| * --=_1_1321709112_1605 |
| * FILE_CONTENTS |
| * --=_1_1321709112_1605 |
| * without any encoding of FILE_CONTENTS. (Basically, it expects that FILE |
| * is the result of "makemime -c"). |
| * |
| * -j MULTIPART_FILE1 SINGLE_FILE2 should output MULTIPART_FILE1 + SINGLE_FILE2 |
| * |
| * Our current behavior is a mutant "-m + -c + -j" one: we create multipart MIME |
| * and we put "-c" encoded FILEs into many multipart sections. |
| */ |
| |
| 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 |
| } |