mirror of
https://git.busybox.net/busybox.git
synced 2024-11-23 13:43:28 +08:00
total overhaul of mail applets. again. Vladimir as usual.
This commit is contained in:
Denis Vlasenko
parent
f10bc3964f
commit
b9d572a273
@ -596,6 +596,7 @@ source util-linux/Config.in
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source miscutils/Config.in
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source networking/Config.in
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source printutils/Config.in
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source mailutils/Config.in
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source procps/Config.in
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source runit/Config.in
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source selinux/Config.in
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1
Makefile
1
Makefile
@ -456,6 +456,7 @@ libs-y := \
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libbb/ \
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libpwdgrp/ \
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loginutils/ \
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mailutils/ \
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miscutils/ \
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modutils/ \
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networking/ \
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@ -151,7 +151,6 @@ USE_FBSPLASH(APPLET(fbsplash, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_FDFLUSH(APPLET_ODDNAME(fdflush, freeramdisk, _BB_DIR_BIN, _BB_SUID_NEVER, fdflush))
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USE_FDFORMAT(APPLET(fdformat, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_FDISK(APPLET(fdisk, _BB_DIR_SBIN, _BB_SUID_NEVER))
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//USE_FETCHMAIL(APPLET(fetchmail, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
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USE_FEATURE_GREP_FGREP_ALIAS(APPLET_ODDNAME(fgrep, grep, _BB_DIR_BIN, _BB_SUID_NEVER, fgrep))
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USE_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_NEVER, find))
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USE_FINDFS(APPLET(findfs, _BB_DIR_SBIN, _BB_SUID_MAYBE))
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@ -237,8 +236,8 @@ USE_LSATTR(APPLET(lsattr, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_LSMOD(APPLET(lsmod, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_MODPROBE_SMALL(APPLET_ODDNAME(lsmod, modprobe, _BB_DIR_SBIN, _BB_SUID_NEVER, modprobe))
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USE_UNLZMA(APPLET_ODDNAME(lzmacat, unlzma, _BB_DIR_USR_BIN, _BB_SUID_NEVER, lzmacat))
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USE_FEATURE_SENDMAIL_MAILX(APPLET_ODDNAME(mail, sendmail, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sendmail))
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USE_MAKEDEVS(APPLET(makedevs, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_MAKEMIME(APPLET(makemime, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_MAN(APPLET(man, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_MATCHPATHCON(APPLET(matchpathcon, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
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USE_MD5SUM(APPLET_ODDNAME(md5sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, md5sum))
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@ -281,6 +280,7 @@ USE_PING6(APPLET(ping6, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_PIPE_PROGRESS(APPLET(pipe_progress, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_PIVOT_ROOT(APPLET(pivot_root, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_PKILL(APPLET_ODDNAME(pkill, pgrep, _BB_DIR_USR_BIN, _BB_SUID_NEVER, pkill))
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USE_POPMAILDIR(APPLET(popmaildir, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
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USE_HALT(APPLET_ODDNAME(poweroff, halt, _BB_DIR_SBIN, _BB_SUID_NEVER, poweroff))
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USE_PRINTENV(APPLET(printenv, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_PRINTF(APPLET_NOFORK(printf, printf, _BB_DIR_USR_BIN, _BB_SUID_NEVER, printf))
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@ -295,6 +295,7 @@ USE_READLINK(APPLET(readlink, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_READPROFILE(APPLET(readprofile, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
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USE_REALPATH(APPLET(realpath, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_HALT(APPLET_ODDNAME(reboot, halt, _BB_DIR_SBIN, _BB_SUID_NEVER, reboot))
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USE_REFORMIME(APPLET(reformime, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_RENICE(APPLET(renice, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_RESET(APPLET(reset, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_RESIZE(APPLET(resize, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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@ -1095,18 +1095,6 @@
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"\n -H HEADS\n" \
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"\n -S SECTORS" \
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#define fetchmail_trivial_usage \
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"[-w timeout] [-H [user:pass@]server[:port]] [-S] [-t] [-z] maildir [prog]"
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#define fetchmail_full_usage "\n\n" \
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"Fetch content of remote mailbox to local maildir\n" \
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"\nOptions:" \
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"\n -w timeout Network timeout" \
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"\n -H [user:pass@]server[:port] Server" \
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"\n -S Use openssl connection helper for secure servers" \
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"\n -t Get only headers" \
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"\n -z Delete messages on server" \
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"\n prog Run 'prog <message_file>' on message delivery" \
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#define blkid_trivial_usage \
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""
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#define blkid_full_usage "\n\n" \
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@ -2378,6 +2366,16 @@
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"/dev/hda[0-15]\n"
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#endif
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#define makemime_trivial_usage \
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"[OPTION]... [FILE]..."
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#define makemime_full_usage "\n\n" \
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"Create MIME-encoded message\n" \
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"\nOptions:" \
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"\n -C Charset" \
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"\n -e Tranfer encoding. Ignored. base64 is assumed" \
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"\n" \
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"\nOther options are silently ignored." \
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#define man_trivial_usage \
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"[OPTION]... [MANPAGE]..."
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#define man_full_usage "\n\n" \
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@ -3095,6 +3093,33 @@
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"\n -v Negate the matching" \
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"\n -x Match whole name (not substring)" \
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#define popmaildir_trivial_usage \
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"[OPTIONS] Maildir [connection-helper ...]"
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#define popmaildir_full_usage "\n\n" \
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"Fetch content of remote mailbox to local maildir\n" \
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"\nOptions:" \
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"\n -b Binary mode. Ignored" \
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"\n -d Debug. Ignored" \
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"\n -m Show used memory. Ignored" \
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"\n -V Show version. Ignored" \
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"\n -c Use tcpclient. Ignored" \
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"\n -a Use APOP protocol. Implied. If server supports APOP -> use it" \
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"\n -s Skip authorization" \
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"\n -T Get messages with TOP instead with RETR" \
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"\n -k Keep retrieved messages on the server" \
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"\n -t timeout Set network timeout" \
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USE_FEATURE_POPMAILDIR_DELIVERY( \
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"\n -F \"program arg1 arg2 ...\" Filter by program. May be multiple" \
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"\n -M \"program arg1 arg2 ...\" Deliver by program" \
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) \
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"\n -R size Remove old messages on the server >= size (in bytes). Ignored" \
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"\n -Z N1-N2 Remove messages from N1 to N2 (dangerous). Ignored" \
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"\n -L size Do not retrieve new messages >= size (in bytes). Ignored" \
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"\n -H lines Type specified number of lines of a message. Ignored"
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#define popmaildir_example_usage \
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"$ popmaildir -k ~/Maildir -- nc pop.drvv.ru 110 [<password_file]\n" \
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"$ popmaildir ~/Maildir -- openssl s_client -quiet -connect pop.gmail.com:995 [<password_file]\n"
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#define poweroff_trivial_usage \
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"[-d delay] [-n] [-f]"
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#define poweroff_full_usage "\n\n" \
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@ -3250,6 +3275,17 @@
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"\n -n No call to sync()" \
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"\n -f Force reboot (don't go through init)" \
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#define reformime_trivial_usage \
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"[OPTION]... [FILE]..."
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#define reformime_full_usage "\n\n" \
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"Parse MIME-encoded message\n" \
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"\nOptions:" \
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"\n -x prefix Extract content of MIME sections to files" \
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"\n -X prog [args] Filter content of MIME sections through prog." \
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"\n Must be the last option" \
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"\n" \
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"\nOther options are silently ignored." \
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#define renice_trivial_usage \
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"{{-n INCREMENT} | PRIORITY} [[-p | -g | -u] ID...]"
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#define renice_full_usage "\n\n" \
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@ -3484,9 +3520,7 @@
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#define selinuxenabled_full_usage ""
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#define sendmail_trivial_usage \
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"[-w timeout] [-H [user:pass@]server[:port]] [-S]\n" \
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"[-N type] [-f sender] [-F fullname] " \
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USE_FEATURE_SENDMAIL_MAILX("[-s subject] [-c cc-rcpt]... [-j charset] [-a attach]... [-e err-rcpt] ") "[-t] [rcpt]..."
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"[OPTIONS] [rcpt]..."
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#define sendmail_full_usage "\n\n" \
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"Send an email\n" \
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"\nOptions:" \
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@ -3498,9 +3532,13 @@
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"\n -F fullname Sender full name. Overrides $NAME" \
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USE_FEATURE_SENDMAIL_MAILX( \
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"\n -s subject Subject" \
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"\n -c rcpt Cc: recipient. May be multiple" \
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"\n -j charset Assume charset for body and subject (" CONFIG_FEATURE_SENDMAIL_CHARSET ")" \
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"\n -j charset Assume charset for body and subject (" CONFIG_FEATURE_MIME_CHARSET ")" \
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"\n -a file File to attach. May be multiple" \
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"\n -H \"prog args...\" Use external connection helper. E.g. openssl for secure servers" \
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"\n -S server[:port] Server" \
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) \
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USE_FEATURE_SENDMAIL_MAILXX( \
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"\n -c rcpt Cc: recipient. May be multiple" \
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"\n -e rcpt Errors-To: recipient" \
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)
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"\n -t Read recipients and subject from body" \
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@ -681,47 +681,6 @@ config ROUTE
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help
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Route displays or manipulates the kernel's IP routing tables.
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config SENDMAIL
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bool "sendmail"
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default n
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help
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Barebones sendmail.
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config FEATURE_SENDMAIL_MAILX
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bool "Allow to specify subject, attachments and their charset"
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default y
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depends on SENDMAIL
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help
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Allow to specify subject, attachments and their charset.
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config FEATURE_SENDMAIL_MAILXX
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bool "Allow to specify Cc: addresses and some additional headers"
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default n
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depends on FEATURE_SENDMAIL_MAILX
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help
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Allow to specify Cc: addresses and some additional headers:
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Errors-To:
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config FEATURE_SENDMAIL_SSL
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bool "Allow to communicate via SSL/TLS"
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default y
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depends on SENDMAIL
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help
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Allow to use secure connections provided by openssl. E.g. @gmail.com.
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config FEATURE_SENDMAIL_CHARSET
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string "Default charset"
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default "utf-8"
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depends on SENDMAIL
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help
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Default charset of the message.
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config FETCHMAIL
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bool "fetchmail"
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default n
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help
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Barebones fetchmail.
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config SLATTACH
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bool "slattach"
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default n
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@ -11,7 +11,6 @@ lib-$(CONFIG_BRCTL) += brctl.o
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lib-$(CONFIG_DNSD) += dnsd.o
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lib-$(CONFIG_ETHER_WAKE) += ether-wake.o
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lib-$(CONFIG_FAKEIDENTD) += isrv_identd.o isrv.o
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lib-$(CONFIG_FETCHMAIL) += sendmail.o
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lib-$(CONFIG_FTPGET) += ftpgetput.o
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lib-$(CONFIG_FTPPUT) += ftpgetput.o
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lib-$(CONFIG_HOSTNAME) += hostname.o
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@ -30,7 +29,6 @@ lib-$(CONFIG_PING) += ping.o
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lib-$(CONFIG_PING6) += ping.o
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lib-$(CONFIG_PSCAN) += pscan.o
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lib-$(CONFIG_ROUTE) += route.o
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lib-$(CONFIG_SENDMAIL) += sendmail.o
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lib-$(CONFIG_SLATTACH) += slattach.o
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lib-$(CONFIG_TC) += tc.o
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lib-$(CONFIG_TELNET) += telnet.o
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@ -1,563 +0,0 @@
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/* vi: set sw=4 ts=4: */
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/*
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* bare bones sendmail
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*
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* Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
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*
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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struct globals {
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pid_t helper_pid;
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unsigned timeout;
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FILE *fp0; // initial stdin
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// arguments for SSL connection helper
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const char *xargs[9];
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};
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#define G (*ptr_to_globals)
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#define helper_pid (G.helper_pid)
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#define timeout (G.timeout )
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#define fp0 (G.fp0 )
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#define xargs (G.xargs )
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#define INIT_G() do { \
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SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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xargs[0] = "openssl"; \
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xargs[1] = "s_client"; \
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xargs[2] = "-quiet"; \
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xargs[3] = "-connect"; \
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/*xargs[4] = "localhost";*/ \
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xargs[5] = "-tls1"; \
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xargs[6] = "-starttls"; \
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xargs[7] = "smtp"; \
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} while (0)
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#define opt_connect (xargs[4])
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static void uuencode(char *fname, const char *text)
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{
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enum {
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SRC_BUF_SIZE = 45, /* This *MUST* be a multiple of 3 */
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DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
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};
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#define src_buf text
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FILE *fp = fp;
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ssize_t len = len;
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char dst_buf[DST_BUF_SIZE + 1];
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if (fname) {
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fp = (NOT_LONE_DASH(fname)) ? xfopen_for_read(fname) : fp0;
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src_buf = bb_common_bufsiz1;
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// N.B. strlen(NULL) segfaults!
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} else if (text) {
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// though we do not call uuencode(NULL, NULL) explicitly
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// still we do not want to break things suddenly
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len = strlen(text);
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} else
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return;
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while (1) {
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size_t size;
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if (fname) {
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size = fread((char *)src_buf, 1, SRC_BUF_SIZE, fp);
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if ((ssize_t)size < 0)
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bb_perror_msg_and_die(bb_msg_read_error);
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} else {
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size = len;
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if (len > SRC_BUF_SIZE)
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size = SRC_BUF_SIZE;
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}
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if (!size)
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break;
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// encode the buffer we just read in
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bb_uuencode(dst_buf, src_buf, size, bb_uuenc_tbl_base64);
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if (fname) {
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printf("\r\n");
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} else {
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src_buf += size;
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len -= size;
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}
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fwrite(dst_buf, 1, 4 * ((size + 2) / 3), stdout);
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}
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if (fname)
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fclose(fp);
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#undef src_buf
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}
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#if ENABLE_FEATURE_SENDMAIL_SSL
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static void kill_helper(void)
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{
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// TODO!!!: is there more elegant way to terminate child on program failure?
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if (helper_pid > 0)
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kill(helper_pid, SIGTERM);
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}
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// generic signal handler
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static void signal_handler(int signo)
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{
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#define err signo
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if (SIGALRM == signo) {
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kill_helper();
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bb_error_msg_and_die("timed out");
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}
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// SIGCHLD. reap zombies
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if (wait_any_nohang(&err) > 0)
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if (WIFEXITED(err)) {
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// if (WEXITSTATUS(err))
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bb_error_msg_and_die("child exited (%d)", WEXITSTATUS(err));
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// else
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// kill(0, SIGCONT);
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}
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#undef err
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}
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static void launch_helper(const char **argv)
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{
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// setup vanilla unidirectional pipes interchange
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int idx;
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int pipes[4];
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xpipe(pipes);
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xpipe(pipes+2);
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helper_pid = vfork();
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if (helper_pid < 0)
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bb_perror_msg_and_die("vfork");
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idx = (!helper_pid) * 2;
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xdup2(pipes[idx], STDIN_FILENO);
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xdup2(pipes[3-idx], STDOUT_FILENO);
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if (ENABLE_FEATURE_CLEAN_UP)
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for (int i = 4; --i >= 0; )
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if (pipes[i] > STDOUT_FILENO)
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close(pipes[i]);
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if (!helper_pid) {
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// child: try to execute connection helper
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BB_EXECVP(*argv, (char **)argv);
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_exit(127);
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}
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// parent: check whether child is alive
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bb_signals(0
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+ (1 << SIGCHLD)
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+ (1 << SIGALRM)
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, signal_handler);
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signal_handler(SIGCHLD);
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// child seems OK -> parent goes on
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}
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#else
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#define kill_helper() ((void)0)
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#define launch_helper(x) bb_error_msg_and_die("no SSL support")
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#endif
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static const char *command(const char *fmt, const char *param)
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{
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const char *msg = fmt;
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alarm(timeout);
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if (msg) {
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msg = xasprintf(fmt, param);
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printf("%s\r\n", msg);
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}
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fflush(stdout);
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return msg;
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}
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static int smtp_checkp(const char *fmt, const char *param, int code)
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{
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char *answer;
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const char *msg = command(fmt, param);
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// read stdin
|
||||
// if the string has a form \d\d\d- -- read next string. E.g. EHLO response
|
||||
// parse first bytes to a number
|
||||
// if code = -1 then just return this number
|
||||
// if code != -1 then checks whether the number equals the code
|
||||
// if not equal -> die saying msg
|
||||
while ((answer = xmalloc_fgetline(stdin)) != NULL)
|
||||
if (strlen(answer) <= 3 || '-' != answer[3])
|
||||
break;
|
||||
if (answer) {
|
||||
int n = atoi(answer);
|
||||
alarm(0);
|
||||
free(answer);
|
||||
if (-1 == code || n == code)
|
||||
return n;
|
||||
}
|
||||
kill_helper();
|
||||
bb_error_msg_and_die("%s failed", msg);
|
||||
}
|
||||
|
||||
static inline int smtp_check(const char *fmt, int code)
|
||||
{
|
||||
return smtp_checkp(fmt, NULL, code);
|
||||
}
|
||||
|
||||
// strip argument of bad chars
|
||||
static char *sane(char *str)
|
||||
{
|
||||
char *s = str;
|
||||
char *p = s;
|
||||
while (*s) {
|
||||
if (isalnum(*s) || '_' == *s || '-' == *s || '.' == *s || '@' == *s) {
|
||||
*p++ = *s;
|
||||
}
|
||||
s++;
|
||||
}
|
||||
*p = '\0';
|
||||
return str;
|
||||
}
|
||||
|
||||
// NB: parse_url can modify url[] (despite const), but only if '@' is there
|
||||
static const char *parse_url(const char *url, const char **user, const char **pass)
|
||||
{
|
||||
// parse [user[:pass]@]host
|
||||
// return host
|
||||
char *s = strchr(url, '@');
|
||||
*user = *pass = NULL;
|
||||
if (s) {
|
||||
*s++ = '\0';
|
||||
*user = url;
|
||||
url = s;
|
||||
s = strchr(*user, ':');
|
||||
if (s) {
|
||||
*s++ = '\0';
|
||||
*pass = s;
|
||||
}
|
||||
}
|
||||
return url;
|
||||
}
|
||||
|
||||
static void rcptto(const char *s)
|
||||
{
|
||||
smtp_checkp("RCPT TO:<%s>", s, 250);
|
||||
}
|
||||
|
||||
int sendmail_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int sendmail_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILX
|
||||
llist_t *opt_attachments = NULL;
|
||||
const char *opt_subject;
|
||||
const char *opt_charset = CONFIG_FEATURE_SENDMAIL_CHARSET;
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILXX
|
||||
llist_t *opt_carboncopies = NULL;
|
||||
char *opt_errors_to;
|
||||
#endif
|
||||
#endif
|
||||
char *opt_from, *opt_fullname;
|
||||
const char *opt_user;
|
||||
const char *opt_pass;
|
||||
int code;
|
||||
char *boundary;
|
||||
llist_t *l;
|
||||
llist_t *headers = NULL;
|
||||
char *domain = sane(safe_getdomainname());
|
||||
unsigned opts;
|
||||
|
||||
enum {
|
||||
OPT_w = 1 << 0, // network timeout
|
||||
OPT_H = 1 << 1, // [user:password@]server[:port]
|
||||
OPT_S = 1 << 2, // connect using openssl s_client helper
|
||||
OPT_t = 1 << 3, // read message for recipients
|
||||
OPT_N = 1 << 4, // request notification
|
||||
OPT_f = 1 << 5, // sender address
|
||||
OPT_F = 1 << 6, // sender name, overrides $NAME
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILX
|
||||
OPT_s = 1 << 7, // subject
|
||||
OPT_j = 1 << 8, // assumed charset
|
||||
OPT_a = 1 << 9, // attachment(s)
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILXX
|
||||
OPT_c = 1 << 10, // carbon copy
|
||||
OPT_e = 1 << 11, // errors-to address
|
||||
#endif
|
||||
#endif
|
||||
};
|
||||
|
||||
// init global variables
|
||||
INIT_G();
|
||||
|
||||
// save initial stdin since body is piped!
|
||||
xdup2(STDIN_FILENO, 3);
|
||||
fp0 = fdopen(3, "r");
|
||||
|
||||
// parse options
|
||||
opt_complementary = "w+:a::" USE_FEATURE_SENDMAIL_MAILXX("c::");
|
||||
opts = getopt32(argv,
|
||||
"w:H:St" "N:f:F:" USE_FEATURE_SENDMAIL_MAILX("s:j:a:") USE_FEATURE_SENDMAIL_MAILXX("c:e:")
|
||||
"X:V:vq:R:O:o:nmL:Iih:GC:B:b:A:" // postfix compat only, ignored
|
||||
// r:Q:p:M:Dd are candidates from another man page. TODO?
|
||||
"46E", // ssmtp introduces another quirks. TODO?: -a[upm] (user, pass, method) to be supported
|
||||
&timeout /* -w */, &opt_connect /* -H */,
|
||||
NULL, &opt_from, &opt_fullname,
|
||||
USE_FEATURE_SENDMAIL_MAILX(&opt_subject, &opt_charset, &opt_attachments,)
|
||||
USE_FEATURE_SENDMAIL_MAILXX(&opt_carboncopies, &opt_errors_to,)
|
||||
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
|
||||
);
|
||||
//argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
// connect to server
|
||||
// host[:port] not specified ? -> use $SMTPHOST. no $SMTPHOST ? -> use localhost
|
||||
if (!(opts & OPT_H)) {
|
||||
opt_connect = getenv("SMTPHOST");
|
||||
if (!opt_connect)
|
||||
opt_connect = "127.0.0.1";
|
||||
}
|
||||
// fetch username and password, if any
|
||||
// NB: parse_url modifies opt_connect[] ONLY if '@' is there.
|
||||
// Thus "127.0.0.1" won't be modified, an is ok that it is RO.
|
||||
opt_connect = parse_url(opt_connect, &opt_user, &opt_pass);
|
||||
|
||||
// username must be defined!
|
||||
if (!opt_user) {
|
||||
// N.B. IMHO getenv("USER") can be way easily spoofed!
|
||||
opt_user = bb_getpwuid(NULL, -1, getuid());
|
||||
}
|
||||
|
||||
// SSL ordered? ->
|
||||
if (opts & OPT_S) {
|
||||
// ... use openssl helper
|
||||
launch_helper(xargs);
|
||||
// no SSL ordered? ->
|
||||
} else {
|
||||
// ... make plain connect
|
||||
int fd = create_and_connect_stream_or_die(opt_connect, 25);
|
||||
// make ourselves a simple IO filter
|
||||
// from now we know nothing about network :)
|
||||
xmove_fd(fd, STDIN_FILENO);
|
||||
xdup2(STDIN_FILENO, STDOUT_FILENO);
|
||||
}
|
||||
|
||||
// got no sender address? -> use username as a resort
|
||||
if (!(opts & OPT_f)) {
|
||||
opt_from = xasprintf("%s@%s", opt_user, domain);
|
||||
}
|
||||
|
||||
// introduce to server
|
||||
|
||||
// we didn't use SSL helper? ->
|
||||
if (!(opts & OPT_S)) {
|
||||
// ... wait for initial server OK
|
||||
smtp_check(NULL, 220);
|
||||
}
|
||||
|
||||
// we should start with modern EHLO
|
||||
if (250 != smtp_checkp("EHLO %s", domain, -1)) {
|
||||
smtp_checkp("HELO %s", domain, 250);
|
||||
}
|
||||
if (ENABLE_FEATURE_CLEAN_UP)
|
||||
free(domain);
|
||||
|
||||
// set sender
|
||||
// NOTE: if password has not been specified
|
||||
// then no authentication is possible
|
||||
code = (opt_pass ? -1 : 250);
|
||||
// first try softly without authentication
|
||||
while (250 != smtp_checkp("MAIL FROM:<%s>", opt_from, code)) {
|
||||
// MAIL FROM failed -> authentication needed
|
||||
if (334 == smtp_check("AUTH LOGIN", -1)) {
|
||||
uuencode(NULL, opt_user); // opt_user != NULL
|
||||
smtp_check("", 334);
|
||||
uuencode(NULL, opt_pass);
|
||||
smtp_check("", 235);
|
||||
}
|
||||
// authenticated OK? -> retry to set sender
|
||||
// but this time die on failure!
|
||||
code = 250;
|
||||
}
|
||||
|
||||
// recipients specified as arguments
|
||||
while (*argv) {
|
||||
char *s = sane(*argv);
|
||||
// loose test on email address validity
|
||||
if (strchr(s, '@')) {
|
||||
rcptto(s);
|
||||
llist_add_to_end(&headers, xasprintf("To: %s", s));
|
||||
}
|
||||
argv++;
|
||||
}
|
||||
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILXX
|
||||
// carbon copies recipients specified as -c options
|
||||
for (l = opt_carboncopies; l; l = l->link) {
|
||||
char *s = sane(l->data);
|
||||
// loose test on email address validity
|
||||
if (strchr(s, '@')) {
|
||||
rcptto(s);
|
||||
// TODO: do we ever need to mangle the message?
|
||||
//llist_add_to_end(&headers, xasprintf("Cc: %s", s));
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
// if -t specified or no recipients specified -> read recipients from message
|
||||
// i.e. scan stdin for To:, Cc:, Bcc: lines ...
|
||||
// ... and then use the rest of stdin as message body
|
||||
// N.B. subject read from body can be further overrided with one specified on command line.
|
||||
// recipients are merged. Bcc: lines are deleted
|
||||
// N.B. other headers are collected and will be dumped verbatim
|
||||
if (opts & OPT_t || !headers) {
|
||||
// fetch recipients and (optionally) subject
|
||||
char *s;
|
||||
while ((s = xmalloc_fgetline(fp0)) != NULL) {
|
||||
if (0 == strncasecmp("To: ", s, 4) || 0 == strncasecmp("Cc: ", s, 4)) {
|
||||
rcptto(sane(s+4));
|
||||
llist_add_to_end(&headers, s);
|
||||
} else if (0 == strncasecmp("Bcc: ", s, 5)) {
|
||||
rcptto(sane(s+5));
|
||||
free(s);
|
||||
// N.B. Bcc vanishes from headers!
|
||||
} else if (0 == strncmp("Subject: ", s, 9)) {
|
||||
// we read subject -> use it verbatim unless it is specified
|
||||
// on command line
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILX
|
||||
if (opts & OPT_s)
|
||||
free(s);
|
||||
else
|
||||
#endif
|
||||
llist_add_to_end(&headers, s);
|
||||
} else if (s[0]) {
|
||||
// misc header
|
||||
llist_add_to_end(&headers, s);
|
||||
} else {
|
||||
free(s);
|
||||
break; // stop on the first empty line
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// enter "put message" mode
|
||||
smtp_check("DATA", 354);
|
||||
|
||||
// put headers we could have preread with -t
|
||||
for (l = headers; l; l = l->link) {
|
||||
printf("%s\r\n", l->data);
|
||||
if (ENABLE_FEATURE_CLEAN_UP)
|
||||
free(l->data);
|
||||
}
|
||||
|
||||
// put (possibly encoded) subject
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILX
|
||||
if (opts & OPT_j)
|
||||
sane((char *)opt_charset);
|
||||
if (opts & OPT_s) {
|
||||
printf("Subject: ");
|
||||
if (opts & OPT_j) {
|
||||
printf("=?%s?B?", opt_charset);
|
||||
uuencode(NULL, opt_subject);
|
||||
printf("?=");
|
||||
} else {
|
||||
printf("%s", opt_subject);
|
||||
}
|
||||
printf("\r\n");
|
||||
}
|
||||
#endif
|
||||
|
||||
// put sender name, $NAME is the default
|
||||
if (!(opts & OPT_F))
|
||||
opt_fullname = getenv("NAME");
|
||||
if (opt_fullname)
|
||||
printf("From: \"%s\" <%s>\r\n", opt_fullname, opt_from);
|
||||
|
||||
// put notification
|
||||
if (opts & OPT_N)
|
||||
printf("Disposition-Notification-To: %s\r\n", opt_from);
|
||||
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILXX
|
||||
// put errors recipient
|
||||
if (opts & OPT_e)
|
||||
printf("Errors-To: %s\r\n", opt_errors_to);
|
||||
#endif
|
||||
|
||||
// make a random string -- it will delimit message parts
|
||||
srand(monotonic_us());
|
||||
boundary = xasprintf("%d-%d-%d", rand(), rand(), rand());
|
||||
|
||||
// put common headers
|
||||
// TODO: do we really need this?
|
||||
// printf("Message-ID: <%s>\r\n", boundary);
|
||||
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILX
|
||||
// have attachments? -> compose multipart MIME
|
||||
if (opt_attachments) {
|
||||
const char *fmt;
|
||||
const char *p;
|
||||
char *q;
|
||||
|
||||
printf(
|
||||
"Mime-Version: 1.0\r\n"
|
||||
"%smultipart/mixed; boundary=\"%s\"\r\n"
|
||||
, "Content-Type: "
|
||||
, boundary
|
||||
);
|
||||
|
||||
// body is pseudo attachment read from stdin in first turn
|
||||
llist_add_to(&opt_attachments, (char *)"-");
|
||||
|
||||
// put body + attachment(s)
|
||||
// N.B. all these weird things just to be tiny
|
||||
// by reusing string patterns!
|
||||
fmt =
|
||||
"\r\n--%s\r\n"
|
||||
"%stext/plain; charset=%s\r\n"
|
||||
"%s%s\r\n"
|
||||
"%s"
|
||||
;
|
||||
p = opt_charset;
|
||||
q = (char *)"";
|
||||
l = opt_attachments;
|
||||
while (l) {
|
||||
printf(
|
||||
fmt
|
||||
, boundary
|
||||
, "Content-Type: "
|
||||
, p
|
||||
, "Content-Disposition: inline"
|
||||
, q
|
||||
, "Content-Transfer-Encoding: base64\r\n"
|
||||
);
|
||||
p = "";
|
||||
fmt =
|
||||
"\r\n--%s\r\n"
|
||||
"%sapplication/octet-stream%s\r\n"
|
||||
"%s; filename=\"%s\"\r\n"
|
||||
"%s"
|
||||
;
|
||||
uuencode(l->data, NULL);
|
||||
l = l->link;
|
||||
if (l)
|
||||
q = bb_get_last_path_component_strip(l->data);
|
||||
}
|
||||
|
||||
// put message terminator
|
||||
printf("\r\n--%s--\r\n" "\r\n", boundary);
|
||||
|
||||
// no attachments? -> just dump message
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
char *s;
|
||||
// terminate headers
|
||||
printf("\r\n");
|
||||
// put plain text respecting leading dots
|
||||
while ((s = xmalloc_fgetline(fp0)) != NULL) {
|
||||
// escape leading dots
|
||||
// N.B. this feature is implied even if no -i (-oi) switch given
|
||||
// N.B. we need to escape the leading dot regardless of
|
||||
// whether it is single or not character on the line
|
||||
if ('.' == s[0] /*&& '\0' == s[1] */)
|
||||
printf(".");
|
||||
// dump read line
|
||||
printf("%s\r\n", s);
|
||||
}
|
||||
}
|
||||
|
||||
// leave "put message" mode
|
||||
smtp_check(".", 250);
|
||||
// ... and say goodbye
|
||||
smtp_check("QUIT", 221);
|
||||
// cleanup
|
||||
if (ENABLE_FEATURE_CLEAN_UP)
|
||||
fclose(fp0);
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user