diff options
Diffstat (limited to '')
-rw-r--r-- | src/plugins/mail-log/Makefile.am | 24 | ||||
-rw-r--r-- | src/plugins/mail-log/Makefile.in | 826 | ||||
-rw-r--r-- | src/plugins/mail-log/mail-log-plugin.c | 546 | ||||
-rw-r--r-- | src/plugins/mail-log/mail-log-plugin.h | 9 |
4 files changed, 1405 insertions, 0 deletions
diff --git a/src/plugins/mail-log/Makefile.am b/src/plugins/mail-log/Makefile.am new file mode 100644 index 0000000..2f3fbc6 --- /dev/null +++ b/src/plugins/mail-log/Makefile.am @@ -0,0 +1,24 @@ +AM_CPPFLAGS = \ + -I$(top_srcdir)/src/lib \ + -I$(top_srcdir)/src/lib-mail \ + -I$(top_srcdir)/src/lib-imap \ + -I$(top_srcdir)/src/lib-index \ + -I$(top_srcdir)/src/lib-storage \ + -I$(top_srcdir)/src/plugins/notify + +NOPLUGIN_LDFLAGS = +lib20_mail_log_plugin_la_LDFLAGS = -module -avoid-version + +module_LTLIBRARIES = \ + lib20_mail_log_plugin.la + +if DOVECOT_PLUGIN_DEPS +lib20_mail_log_plugin_la_LIBADD = \ + ../notify/lib15_notify_plugin.la +endif + +lib20_mail_log_plugin_la_SOURCES = \ + mail-log-plugin.c + +noinst_HEADERS = \ + mail-log-plugin.h diff --git a/src/plugins/mail-log/Makefile.in b/src/plugins/mail-log/Makefile.in new file mode 100644 index 0000000..3032360 --- /dev/null +++ b/src/plugins/mail-log/Makefile.in @@ -0,0 +1,826 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; \ + else \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + bs=\\; 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b/src/plugins/mail-log/mail-log-plugin.c @@ -0,0 +1,546 @@ +/* Copyright (c) 2007-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "array.h" +#include "llist.h" +#include "str.h" +#include "str-sanitize.h" +#include "imap-util.h" +#include "mail-user.h" +#include "mail-storage-private.h" +#include "notify-plugin.h" +#include "mail-log-plugin.h" + + +#define MAILBOX_NAME_LOG_LEN 64 +#define HEADER_LOG_LEN 80 + +#define MAIL_LOG_USER_CONTEXT(obj) \ + MODULE_CONTEXT_REQUIRE(obj, mail_log_user_module) + +enum mail_log_field { + MAIL_LOG_FIELD_UID = 0x01, + MAIL_LOG_FIELD_BOX = 0x02, + MAIL_LOG_FIELD_MSGID = 0x04, + MAIL_LOG_FIELD_PSIZE = 0x08, + MAIL_LOG_FIELD_VSIZE = 0x10, + MAIL_LOG_FIELD_FLAGS = 0x20, + MAIL_LOG_FIELD_FROM = 0x40, + MAIL_LOG_FIELD_SUBJECT = 0x80 +}; +#define MAIL_LOG_DEFAULT_FIELDS \ + (MAIL_LOG_FIELD_UID | MAIL_LOG_FIELD_BOX | \ + MAIL_LOG_FIELD_MSGID | MAIL_LOG_FIELD_PSIZE) + +enum mail_log_event { + MAIL_LOG_EVENT_DELETE = 0x01, + MAIL_LOG_EVENT_UNDELETE = 0x02, + MAIL_LOG_EVENT_EXPUNGE = 0x04, + MAIL_LOG_EVENT_SAVE = 0x08, + MAIL_LOG_EVENT_COPY = 0x10, + MAIL_LOG_EVENT_MAILBOX_CREATE = 0x20, + MAIL_LOG_EVENT_MAILBOX_DELETE = 0x40, + MAIL_LOG_EVENT_MAILBOX_RENAME = 0x80, + MAIL_LOG_EVENT_FLAG_CHANGE = 0x100 +}; +#define MAIL_LOG_DEFAULT_EVENTS \ + (MAIL_LOG_EVENT_DELETE | MAIL_LOG_EVENT_UNDELETE | \ + MAIL_LOG_EVENT_EXPUNGE | MAIL_LOG_EVENT_SAVE | MAIL_LOG_EVENT_COPY | \ + MAIL_LOG_EVENT_MAILBOX_DELETE | MAIL_LOG_EVENT_MAILBOX_RENAME) + +static const char *field_names[] = { + "uid", + "box", + "msgid", + "size", + "vsize", + "flags", + "from", + "subject", + NULL +}; + +static const char *event_names[] = { + "delete", + "undelete", + "expunge", + "save", + "copy", + "mailbox_create", + "mailbox_delete", + "mailbox_rename", + "flag_change", + NULL +}; + +struct mail_log_user { + union mail_user_module_context module_ctx; + + enum mail_log_field fields; + enum mail_log_event events; + bool cached_only; +}; + +struct mail_log_message { + struct mail_log_message *prev, *next; + + enum mail_log_event event; + bool ignore; + const char *pretext, *text; +}; + +struct mail_log_mail_txn_context { + pool_t pool; + struct mail_log_message *messages, *messages_tail; +}; + +static MODULE_CONTEXT_DEFINE_INIT(mail_log_user_module, + &mail_user_module_register); + +static enum mail_log_field mail_log_field_find(const char *name) +{ + unsigned int i; + + for (i = 0; field_names[i] != NULL; i++) { + if (strcmp(name, field_names[i]) == 0) + return 1 << i; + } + return 0; +} + +static enum mail_log_event mail_log_event_find(const char *name) +{ + unsigned int i; + + if (strcmp(name, "append") == 0) { + /* v1.x backwards compatibility */ + name = "save"; + } + for (i = 0; event_names[i] != NULL; i++) { + if (strcmp(name, event_names[i]) == 0) + return 1 << i; + } + return 0; +} + +static enum mail_log_field mail_log_parse_fields(const char *str) +{ + const char *const *tmp; + static enum mail_log_field field, fields = 0; + + for (tmp = t_strsplit_spaces(str, ", "); *tmp != NULL; tmp++) { + field = mail_log_field_find(*tmp); + if (field == 0) + i_fatal("Unknown field in mail_log_fields: '%s'", *tmp); + fields |= field; + } + return fields; +} + +static enum mail_log_event mail_log_parse_events(const char *str) +{ + const char *const *tmp; + static enum mail_log_event event, events = 0; + + for (tmp = t_strsplit_spaces(str, ", "); *tmp != NULL; tmp++) { + event = mail_log_event_find(*tmp); + if (event == 0) + i_fatal("Unknown event in mail_log_events: '%s'", *tmp); + events |= event; + } + return events; +} + +static void mail_log_mail_user_created(struct mail_user *user) +{ + struct mail_log_user *muser; + const char *str; + + muser = p_new(user->pool, struct mail_log_user, 1); + MODULE_CONTEXT_SET(user, mail_log_user_module, muser); + + str = mail_user_plugin_getenv(user, "mail_log_fields"); + muser->fields = str == NULL ? MAIL_LOG_DEFAULT_FIELDS : + mail_log_parse_fields(str); + + str = mail_user_plugin_getenv(user, "mail_log_events"); + muser->events = str == NULL ? MAIL_LOG_DEFAULT_EVENTS : + mail_log_parse_events(str); + + muser->cached_only = + mail_user_plugin_getenv_bool(user, "mail_log_cached_only"); +} + +static void mail_log_append_mailbox_name(string_t *str, struct mail *mail) +{ + const char *mailbox_str; + + mailbox_str = mailbox_get_vname(mail->box); + str_printfa(str, "box=%s", + str_sanitize(mailbox_str, MAILBOX_NAME_LOG_LEN)); +} + +static void +mail_log_append_mail_header(string_t *str, struct mail *mail, + const char *name, const char *header) +{ + const char *value; + + if (mail_get_first_header_utf8(mail, header, &value) <= 0) + value = ""; + str_printfa(str, "%s=%s", name, str_sanitize(value, HEADER_LOG_LEN)); +} + +static void +mail_log_append_uid(struct mail_log_mail_txn_context *ctx, + struct mail_log_message *msg, string_t *str, uint32_t uid) +{ + if (uid != 0) + str_printfa(str, "uid=%u", uid); + else { + /* we don't know the uid yet, assign it later */ + str_printfa(str, "uid="); + msg->pretext = p_strdup(ctx->pool, str_c(str)); + str_truncate(str, 0); + } +} + +static void +mail_log_update_wanted_fields(struct mail *mail, enum mail_log_field fields) +{ + enum mail_fetch_field wanted_fields = 0; + struct mailbox_header_lookup_ctx *wanted_headers = NULL; + const char *headers[4]; + unsigned int hdr_idx = 0; + + if ((fields & MAIL_LOG_FIELD_MSGID) != 0) + headers[hdr_idx++] = "Message-ID"; + if ((fields & MAIL_LOG_FIELD_FROM) != 0) + headers[hdr_idx++] = "From"; + if ((fields & MAIL_LOG_FIELD_SUBJECT) != 0) + headers[hdr_idx++] = "Subject"; + if (hdr_idx > 0) { + i_assert(hdr_idx < N_ELEMENTS(headers)); + headers[hdr_idx] = NULL; + wanted_headers = mailbox_header_lookup_init(mail->box, headers); + } + + if ((fields & MAIL_LOG_FIELD_PSIZE) != 0) + wanted_fields |= MAIL_FETCH_PHYSICAL_SIZE; + if ((fields & MAIL_LOG_FIELD_VSIZE) != 0) + wanted_fields |= MAIL_FETCH_VIRTUAL_SIZE; + + mail_add_temp_wanted_fields(mail, wanted_fields, wanted_headers); + mailbox_header_lookup_unref(&wanted_headers); +} + +static void +mail_log_append_mail_message_real(struct mail_log_mail_txn_context *ctx, + struct mail *mail, enum mail_log_event event, + const char *desc) +{ + struct mail_log_user *muser = + MAIL_LOG_USER_CONTEXT(mail->box->storage->user); + struct mail_log_message *msg; + string_t *text; + uoff_t size; + + msg = p_new(ctx->pool, struct mail_log_message, 1); + + /* avoid parsing through the message multiple times */ + mail_log_update_wanted_fields(mail, muser->fields); + + text = t_str_new(128); + str_append(text, desc); + str_append(text, ": "); + if ((muser->fields & MAIL_LOG_FIELD_BOX) != 0) { + mail_log_append_mailbox_name(text, mail); + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_UID) != 0) { + if (event != MAIL_LOG_EVENT_SAVE && + event != MAIL_LOG_EVENT_COPY) + mail_log_append_uid(ctx, msg, text, mail->uid); + else { + /* with mbox mail->uid contains the uid, but handle + this consistently with all mailbox formats */ + mail_log_append_uid(ctx, msg, text, 0); + } + /* make sure UID is assigned to this mail */ + mail->transaction->flags |= MAILBOX_TRANSACTION_FLAG_ASSIGN_UIDS; + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_MSGID) != 0) { + mail_log_append_mail_header(text, mail, "msgid", "Message-ID"); + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_PSIZE) != 0) { + if (mail_get_physical_size(mail, &size) == 0) + str_printfa(text, "size=%"PRIuUOFF_T, size); + else + str_printfa(text, "size=error"); + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_VSIZE) != 0) { + if (mail_get_virtual_size(mail, &size) == 0) + str_printfa(text, "vsize=%"PRIuUOFF_T, size); + else + str_printfa(text, "vsize=error"); + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_FROM) != 0) { + mail_log_append_mail_header(text, mail, "from", "From"); + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_SUBJECT) != 0) { + mail_log_append_mail_header(text, mail, "subject", "Subject"); + str_append(text, ", "); + } + if ((muser->fields & MAIL_LOG_FIELD_FLAGS) != 0) { + str_printfa(text, "flags=("); + imap_write_flags(text, mail_get_flags(mail), + mail_get_keywords(mail)); + str_append(text, "), "); + } + str_truncate(text, str_len(text)-2); + + msg->event = event; + msg->text = p_strdup(ctx->pool, str_c(text)); + DLLIST2_APPEND(&ctx->messages, &ctx->messages_tail, msg); +} + +static void mail_log_add_dummy_msg(struct mail_log_mail_txn_context *ctx, + enum mail_log_event event) +{ + struct mail_log_message *msg; + + msg = p_new(ctx->pool, struct mail_log_message, 1); + msg->event = event; + msg->ignore = TRUE; + DLLIST2_APPEND(&ctx->messages, &ctx->messages_tail, msg); +} + +static void +mail_log_append_mail_message(struct mail_log_mail_txn_context *ctx, + struct mail *mail, enum mail_log_event event, + const char *desc) +{ + struct mail_log_user *muser = + MAIL_LOG_USER_CONTEXT(mail->box->storage->user); + + if ((muser->events & event) == 0) { + if (event == MAIL_LOG_EVENT_SAVE || + event == MAIL_LOG_EVENT_COPY) + mail_log_add_dummy_msg(ctx, event); + return; + } + + T_BEGIN { + enum mail_lookup_abort orig_lookup_abort = mail->lookup_abort; + + if (event != MAIL_LOG_EVENT_SAVE && muser->cached_only) + mail->lookup_abort = MAIL_LOOKUP_ABORT_NOT_IN_CACHE; + mail_log_append_mail_message_real(ctx, mail, event, desc); + mail->lookup_abort = orig_lookup_abort; + } T_END; +} + +static void * +mail_log_mail_transaction_begin(struct mailbox_transaction_context *t ATTR_UNUSED) +{ + pool_t pool; + struct mail_log_mail_txn_context *ctx; + + pool = pool_alloconly_create("mail-log", 2048); + ctx = p_new(pool, struct mail_log_mail_txn_context, 1); + ctx->pool = pool; + return ctx; +} + +static void mail_log_mail_save(void *txn, struct mail *mail) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + + mail_log_append_mail_message(ctx, mail, MAIL_LOG_EVENT_SAVE, "save"); +} + +static void mail_log_mail_copy(void *txn, struct mail *src, struct mail *dst) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + struct mail_private *src_pmail = (struct mail_private *)src; + struct mailbox *src_box = src->box; + const char *desc; + + if (src_pmail->vmail != NULL) { + /* copying a mail from virtual storage. src points to the + backend mail, but we want to log the virtual mailbox name. */ + src_box = src_pmail->vmail->box; + } + desc = t_strdup_printf("copy from %s", + str_sanitize(mailbox_get_vname(src_box), + MAILBOX_NAME_LOG_LEN)); + mail_log_append_mail_message(ctx, dst, + MAIL_LOG_EVENT_COPY, desc); +} + +static void mail_log_mail_expunge(void *txn, struct mail *mail) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + struct mail_private *p = (struct mail_private*)mail; + + mail_log_append_mail_message(ctx, mail, MAIL_LOG_EVENT_EXPUNGE, + p->autoexpunged ? "autoexpunge" : "expunge"); +} + +static void mail_log_mail_update_flags(void *txn, struct mail *mail, + enum mail_flags old_flags) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + enum mail_flags new_flags = mail_get_flags(mail); + + if (((old_flags ^ new_flags) & MAIL_DELETED) == 0) { + mail_log_append_mail_message(ctx, mail, + MAIL_LOG_EVENT_FLAG_CHANGE, + "flag_change"); + } else if ((old_flags & MAIL_DELETED) == 0) { + mail_log_append_mail_message(ctx, mail, MAIL_LOG_EVENT_DELETE, + "delete"); + } else { + mail_log_append_mail_message(ctx, mail, MAIL_LOG_EVENT_UNDELETE, + "undelete"); + } +} + +static void +mail_log_mail_update_keywords(void *txn, struct mail *mail, + const char *const *old_keywords ATTR_UNUSED) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + + mail_log_append_mail_message(ctx, mail, MAIL_LOG_EVENT_FLAG_CHANGE, + "flag_change"); +} + +static void mail_log_save(const struct mail_log_message *msg, uint32_t uid) +{ + if (msg->ignore) { + /* not logging this save/copy */ + } else if (msg->pretext == NULL) + i_info("%s", msg->text); + else if (uid != 0) + i_info("%s%u%s", msg->pretext, uid, msg->text); + else + i_info("%serror%s", msg->pretext, msg->text); +} + +static void +mail_log_mail_transaction_commit(void *txn, + struct mail_transaction_commit_changes *changes) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + struct mail_log_message *msg; + struct seq_range_iter iter; + unsigned int n = 0; + uint32_t uid; + + seq_range_array_iter_init(&iter, &changes->saved_uids); + for (msg = ctx->messages; msg != NULL; msg = msg->next) { + if (msg->event == MAIL_LOG_EVENT_SAVE || + msg->event == MAIL_LOG_EVENT_COPY) { + if (!seq_range_array_iter_nth(&iter, n++, &uid)) + uid = 0; + mail_log_save(msg, uid); + } else { + i_assert(msg->pretext == NULL); + i_info("%s", msg->text); + } + } + i_assert(!seq_range_array_iter_nth(&iter, n, &uid)); + + pool_unref(&ctx->pool); +} + +static void mail_log_mail_transaction_rollback(void *txn) +{ + struct mail_log_mail_txn_context *ctx = + (struct mail_log_mail_txn_context *)txn; + + pool_unref(&ctx->pool); +} + +static void +mail_log_mailbox_create(struct mailbox *box) +{ + struct mail_log_user *muser = MAIL_LOG_USER_CONTEXT(box->storage->user); + + if ((muser->events & MAIL_LOG_EVENT_MAILBOX_CREATE) == 0) + return; + + i_info("Mailbox created: %s", + str_sanitize(mailbox_get_vname(box), MAILBOX_NAME_LOG_LEN)); +} + +static void +mail_log_mailbox_delete_commit(void *txn ATTR_UNUSED, struct mailbox *box) +{ + struct mail_log_user *muser = MAIL_LOG_USER_CONTEXT(box->storage->user); + + if ((muser->events & MAIL_LOG_EVENT_MAILBOX_DELETE) == 0) + return; + + i_info("Mailbox deleted: %s", + str_sanitize(mailbox_get_vname(box), MAILBOX_NAME_LOG_LEN)); +} + +static void +mail_log_mailbox_rename(struct mailbox *src, struct mailbox *dest) +{ + struct mail_log_user *muser = MAIL_LOG_USER_CONTEXT(src->storage->user); + + if ((muser->events & MAIL_LOG_EVENT_MAILBOX_RENAME) == 0) + return; + + i_info("Mailbox renamed: %s -> %s", + str_sanitize(mailbox_get_vname(src), MAILBOX_NAME_LOG_LEN), + str_sanitize(mailbox_get_vname(dest), MAILBOX_NAME_LOG_LEN)); +} + +static const struct notify_vfuncs mail_log_vfuncs = { + .mail_transaction_begin = mail_log_mail_transaction_begin, + .mail_save = mail_log_mail_save, + .mail_copy = mail_log_mail_copy, + .mail_expunge = mail_log_mail_expunge, + .mail_update_flags = mail_log_mail_update_flags, + .mail_update_keywords = mail_log_mail_update_keywords, + .mail_transaction_commit = mail_log_mail_transaction_commit, + .mail_transaction_rollback = mail_log_mail_transaction_rollback, + .mailbox_create = mail_log_mailbox_create, + .mailbox_delete_commit = mail_log_mailbox_delete_commit, + .mailbox_rename = mail_log_mailbox_rename +}; + +static struct notify_context *mail_log_ctx; + +static struct mail_storage_hooks mail_log_mail_storage_hooks = { + .mail_user_created = mail_log_mail_user_created +}; + +void mail_log_plugin_init(struct module *module) +{ + mail_log_ctx = notify_register(&mail_log_vfuncs); + mail_storage_hooks_add(module, &mail_log_mail_storage_hooks); +} + +void mail_log_plugin_deinit(void) +{ + mail_storage_hooks_remove(&mail_log_mail_storage_hooks); + notify_unregister(mail_log_ctx); +} + +const char *mail_log_plugin_dependencies[] = { "notify", NULL }; diff --git a/src/plugins/mail-log/mail-log-plugin.h b/src/plugins/mail-log/mail-log-plugin.h new file mode 100644 index 0000000..0af47ac --- /dev/null +++ b/src/plugins/mail-log/mail-log-plugin.h @@ -0,0 +1,9 @@ +#ifndef MAIL_LOG_PLUGIN_H +#define MAIL_LOG_PLUGIN_H + +extern const char *mail_log_plugin_dependencies[]; + +void mail_log_plugin_init(struct module *module); +void mail_log_plugin_deinit(void); + +#endif |