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Diffstat (limited to 'mailutils/makemime.c')
| -rw-r--r-- | mailutils/makemime.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/mailutils/makemime.c b/mailutils/makemime.c new file mode 100644 index 0000000..628619b --- /dev/null +++ b/mailutils/makemime.c @@ -0,0 +1,218 @@ +/* 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: "\nOptions:" +//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; +#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:", + &G.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 + , G.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 +} |