mirror of
https://bitbucket.org/jsuto/piler.git
synced 2025-10-31 11:12:27 +01:00
heavy refactoring of session.c
Change-Id: Iddde0479444dae15a61fa32ea4fd8ae894029183 Signed-off-by: SJ <sj@acts.hu>
This commit is contained in:
SJ
@@ -11,9 +11,9 @@
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#include <piler.h>
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struct __counters load_counters(struct session_data *sdata, struct __data *data){
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struct counters load_counters(struct session_data *sdata, struct __data *data){
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char buf[SMALLBUFSIZE];
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struct __counters counters;
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struct counters counters;
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bzero(&counters, sizeof(counters));
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@@ -47,11 +47,11 @@ struct __counters load_counters(struct session_data *sdata, struct __data *data)
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}
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void update_counters(struct session_data *sdata, struct __data *data, struct __counters *counters, struct __config *cfg){
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void update_counters(struct session_data *sdata, struct __data *data, struct counters *counters, struct __config *cfg){
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char buf[MAXBUFSIZE];
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#ifdef HAVE_MEMCACHED
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unsigned long long mc, rcvd;
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struct __counters c;
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struct counters c;
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char key[MAX_MEMCACHED_KEY_LEN];
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unsigned int flags=0;
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11
src/defs.h
11
src/defs.h
@@ -363,7 +363,7 @@ struct __data {
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};
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struct __counters {
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struct counters {
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unsigned long long c_rcvd;
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unsigned long long c_virus;
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unsigned long long c_duplicate;
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@@ -372,5 +372,14 @@ struct __counters {
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unsigned long long c_stored_size;
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};
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struct session_ctx {
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int new_sd;
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int db_conn;
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int inj;
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struct counters *counters;
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};
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#endif /* _DEFS_H */
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@@ -23,7 +23,7 @@ int import_message(char *filename, struct session_data *sdata, struct __data *da
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char *rule;
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struct stat st;
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struct parser_state state;
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struct __counters counters;
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struct counters counters;
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init_session_data(sdata, cfg);
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@@ -50,7 +50,7 @@ struct __config read_config(char *configfile);
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void check_and_create_directories(struct __config *cfg, uid_t uid, gid_t gid);
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void update_counters(struct session_data *sdata, struct __data *data, struct __counters *counters, struct __config *cfg);
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void update_counters(struct session_data *sdata, struct __data *data, struct counters *counters, struct __config *cfg);
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int retrieve_email_from_archive(struct session_data *sdata, struct __data *data, FILE *dest, struct __config *cfg);
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int file_from_archive_to_network(char *filename, int sd, int tls_enable, struct __data *data, struct __config *cfg);
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336
src/session.c
336
src/session.c
@@ -20,28 +20,31 @@
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#include "smtp.h"
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int is_blocked_by_tcp_wrappers(int sd);
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void process_written_file(struct session_ctx *sctx, struct session_data *sdata, struct __data *data, struct __config *cfg);
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int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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int i, ret, pos, readpos=0, result, n, inj=ERR, protocol_state, prevlen=0;
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char *p, *rcpt, buf[MAXBUFSIZE], puf[MAXBUFSIZE], resp[MAXBUFSIZE], prevbuf[MAXBUFSIZE], last2buf[2*MAXBUFSIZE+1];
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char virusinfo[SMALLBUFSIZE], delay[SMALLBUFSIZE], tmpbuf[SMALLBUFSIZE];
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char *arule = NULL;
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char *status = NULL;
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int ret, pos, readpos=0, result, n, protocol_state, prevlen=0;
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char *p, buf[MAXBUFSIZE], puf[MAXBUFSIZE], resp[MAXBUFSIZE], prevbuf[MAXBUFSIZE], last2buf[2*MAXBUFSIZE+1];
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struct session_data sdata;
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struct parser_state parser_state;
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int db_conn=0;
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int rc;
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struct __counters counters;
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struct counters counters;
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struct session_ctx sctx;
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struct timezone tz;
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struct timeval tv1, tv2;
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int starttls = 0;
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bzero(&counters, sizeof(counters));
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sctx.new_sd = new_sd;
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sctx.inj = ERR;
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sctx.db_conn = 0;
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sctx.counters = &counters;
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#ifdef HAVE_LIBWRAP
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if(is_blocked_by_tcp_wrappers(new_sd) == 1) return 0;
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if(is_blocked_by_tcp_wrappers(sctx.new_sd) == 1) return 0;
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#endif
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srand(getpid());
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@@ -51,24 +54,20 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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init_session_data(&sdata, cfg);
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sdata.tls = 0;
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bzero(&counters, sizeof(counters));
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/* open database connection */
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db_conn = 0;
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#ifdef NEED_MYSQL
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if(open_database(&sdata, cfg) == OK){
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db_conn = 1;
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sctx.db_conn = 1;
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}
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else
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syslog(LOG_PRIORITY, "%s", ERR_MYSQL_CONNECT);
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#endif
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if(db_conn == 0){
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if(sctx.db_conn == 0){
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snprintf(buf, MAXBUFSIZE-1, SMTP_RESP_421_ERR_TMP, cfg->hostid);
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send(new_sd, buf, strlen(buf), 0);
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send(sctx.new_sd, buf, strlen(buf), 0);
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return 0;
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}
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@@ -81,10 +80,10 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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snprintf(buf, MAXBUFSIZE-1, SMTP_RESP_220_BANNER, cfg->hostid);
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#endif
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send(new_sd, buf, strlen(buf), 0);
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send(sctx.new_sd, buf, strlen(buf), 0);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: sent: %s", sdata.ttmpfile, buf);
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while((n = recvtimeoutssl(new_sd, &puf[readpos], sizeof(puf)-readpos, TIMEOUT, sdata.tls, data->ssl)) > 0){
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while((n = recvtimeoutssl(sctx.new_sd, &puf[readpos], sizeof(puf)-readpos, TIMEOUT, sdata.tls, data->ssl)) > 0){
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pos = 0;
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/* accept mail data */
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@@ -119,14 +118,17 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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protocol_state = SMTP_STATE_PERIOD;
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/* make sure we had a successful read */
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rc = fsync(sdata.fd);
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close(sdata.fd);
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gettimeofday(&tv2, &tz);
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sdata.__acquire = tvdiff(tv2, tv1);
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if(rc){
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syslog(LOG_PRIORITY, "failed writing data: %s", sdata.ttmpfile);
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@@ -134,7 +136,7 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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for(i=0; i<sdata.num_of_rcpt_to; i++){
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#endif
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write1(new_sd, SMTP_RESP_421_ERR_WRITE_FAILED, strlen(SMTP_RESP_421_ERR_WRITE_FAILED), sdata.tls, data->ssl);
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write1(sctx.new_sd, SMTP_RESP_421_ERR_WRITE_FAILED, strlen(SMTP_RESP_421_ERR_WRITE_FAILED), sdata.tls, data->ssl);
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#ifdef HAVE_LMTP
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}
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@@ -144,146 +146,10 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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goto AFTER_PERIOD;
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}
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gettimeofday(&tv1, &tz);
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data->folder = 0;
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parser_state = parse_message(&sdata, 1, data, cfg);
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post_parse(&sdata, &parser_state, cfg);
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gettimeofday(&tv2, &tz);
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sdata.__parsed = tvdiff(tv2, tv1);
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if(cfg->syslog_recipients == 1){
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rcpt = parser_state.b_to;
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do {
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rcpt = split_str(rcpt, " ", tmpbuf, sizeof(tmpbuf)-1);
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if(does_it_seem_like_an_email_address(tmpbuf) == 1){
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syslog(LOG_PRIORITY, "%s: rcpt=%s", sdata.ttmpfile, tmpbuf);
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}
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} while(rcpt);
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}
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: parsed message", sdata.ttmpfile);
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if(cfg->archive_only_mydomains == 1 && sdata.internal_sender == 0 && sdata.internal_recipient == 0){
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remove_stripped_attachments(&parser_state);
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inj = ERR_MYDOMAINS;
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snprintf(sdata.acceptbuf, SMALLBUFSIZE-1, "250 Ok %s\r\n", sdata.ttmpfile);
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write1(new_sd, sdata.acceptbuf, strlen(sdata.acceptbuf), sdata.tls, data->ssl);
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syslog(LOG_PRIORITY, "%s: discarding: not on mydomains, from=%s, message-id=%s", sdata.ttmpfile, sdata.fromemail, parser_state.message_id);
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goto END_OF_PROCESSING;
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}
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make_digests(&sdata, cfg);
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#ifdef HAVE_ANTIVIRUS
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if(cfg->use_antivirus == 1){
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sdata.rav = do_av_check(&sdata, &virusinfo[0], data, cfg);
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}
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#endif
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process_written_file(&sctx, &sdata, data, cfg);
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#ifdef HAVE_LMTP
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for(i=0; i<sdata.num_of_rcpt_to; i++){
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#else
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i = 0;
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#endif
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: round %d in injection", sdata.ttmpfile, i);
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inj = ERR;
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status = S_STATUS_UNDEF;
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if(db_conn == 1){
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if(sdata.restored_copy == 1){
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syslog(LOG_PRIORITY, "%s: discarding: restored copy", sdata.ttmpfile);
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inj = OK;
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}
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else if(sdata.tot_len < cfg->min_message_size){
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syslog(LOG_PRIORITY, "%s: discarding: too short message (%d bytes)", sdata.ttmpfile, sdata.tot_len);
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inj = OK;
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}
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else if(AVIR_VIRUS == sdata.rav){
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syslog(LOG_PRIORITY, "%s: found virus: %s", sdata.ttmpfile, virusinfo);
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counters.c_virus++;
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inj = OK;
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} else if(strlen(sdata.bodydigest) < 10) {
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syslog(LOG_PRIORITY, "%s: invalid digest", sdata.ttmpfile);
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inj = ERR;
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} else {
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: processing message", sdata.ttmpfile);
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/* check message against archiving rules */
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arule = check_againt_ruleset(data->archiving_rules, &parser_state, sdata.tot_len, sdata.spam_message);
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if(arule){
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syslog(LOG_PRIORITY, "%s: discarding: archiving policy: *%s*", sdata.ttmpfile, arule);
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inj = OK;
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counters.c_ignore++;
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remove_stripped_attachments(&parser_state);
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status = S_STATUS_DISCARDED;
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}
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else {
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inj = process_message(&sdata, &parser_state, data, cfg);
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unlink(parser_state.message_id_hash);
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counters.c_size += sdata.tot_len;
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counters.c_stored_size = sdata.stored_len;
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status = S_STATUS_STORED;
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}
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}
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}
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/* set the accept buffer */
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snprintf(sdata.acceptbuf, SMALLBUFSIZE-1, "250 Ok %s <%s>\r\n", sdata.ttmpfile, sdata.rcptto[i]);
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if(inj == ERR){
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snprintf(sdata.acceptbuf, SMALLBUFSIZE-1, "451 %s <%s>\r\n", sdata.ttmpfile, sdata.rcptto[i]);
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status = S_STATUS_ERROR;
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}
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write1(new_sd, sdata.acceptbuf, strlen(sdata.acceptbuf), sdata.tls, data->ssl);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: sent: %s", sdata.ttmpfile, sdata.acceptbuf);
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counters.c_rcvd++;
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if(inj == ERR_EXISTS){
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syslog(LOG_PRIORITY, "%s: discarding: duplicate message, id: %llu, message-id: %s", sdata.ttmpfile, sdata.duplicate_id, parser_state.message_id);
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counters.c_duplicate++;
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status = S_STATUS_DUPLICATE;
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}
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snprintf(delay, SMALLBUFSIZE-1, "delay=%.2f, delays=%.2f/%.2f/%.2f/%.2f/%.2f/%.2f",
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(sdata.__acquire+sdata.__parsed+sdata.__av+sdata.__compress+sdata.__encrypt+sdata.__store)/1000000.0,
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sdata.__acquire/1000000.0, sdata.__parsed/1000000.0, sdata.__av/1000000.0, sdata.__compress/1000000.0, sdata.__encrypt/1000000.0, sdata.__store/1000000.0);
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syslog(LOG_PRIORITY, "%s: from=%s, size=%d/%d, attachments=%d, reference=%s, message-id=%s, retention=%d, folder=%d, %s, status=%s", sdata.ttmpfile, sdata.fromemail, sdata.tot_len, sdata.stored_len, parser_state.n_attachments, parser_state.reference, parser_state.message_id, parser_state.retention, data->folder, delay, status);
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#ifdef HAVE_LMTP
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} /* for */
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#endif
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END_OF_PROCESSING:
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unlink(sdata.ttmpfile);
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unlink(sdata.tmpframe);
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@@ -302,7 +168,7 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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if(puf[n-2] != '\r' && puf[n-1] != '\n'){
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memmove(puf, puf+pos, n-pos);
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memset(puf+n-pos, 0, MAXBUFSIZE-n+pos);
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recvtimeout(new_sd, buf, MAXBUFSIZE, TIMEOUT);
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recvtimeout(sctx.new_sd, buf, MAXBUFSIZE, TIMEOUT);
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strncat(puf, buf, MAXBUFSIZE-1-n+pos);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: partial read: %s", sdata.ttmpfile, puf);
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pos = 0;
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@@ -384,7 +250,7 @@ AFTER_PERIOD:
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if(strncasecmp(buf, SMTP_CMD_DATA, strlen(SMTP_CMD_DATA)) == 0){
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memset(last2buf, 0, 2*MAXBUFSIZE+1);
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memset(prevbuf, 0, MAXBUFSIZE);
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inj = ERR;
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sctx.inj = ERR;
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prevlen = 0;
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process_command_data(&sdata, &protocol_state, &resp[0], sizeof(resp)-1);
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@@ -434,7 +300,7 @@ AFTER_PERIOD:
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* ie. we have timed out than send back 421 error message
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*/
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if(protocol_state < SMTP_STATE_QUIT && inj == ERR){
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if(protocol_state < SMTP_STATE_QUIT && sctx.inj == ERR){
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snprintf(buf, MAXBUFSIZE-1, SMTP_RESP_421_ERR, cfg->hostid);
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write1(new_sd, buf, strlen(buf), sdata.tls, data->ssl);
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@@ -455,7 +321,7 @@ AFTER_PERIOD:
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QUITTING:
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update_counters(&sdata, data, &counters, cfg);
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update_counters(&sdata, data, sctx.counters, cfg);
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#ifdef NEED_MYSQL
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close_database(&sdata);
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@@ -466,9 +332,9 @@ QUITTING:
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SSL_free(data->ssl);
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}
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if(cfg->verbosity >= _LOG_INFO) syslog(LOG_PRIORITY, "processed %llu messages", counters.c_rcvd);
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if(cfg->verbosity >= _LOG_INFO) syslog(LOG_PRIORITY, "processed %llu messages", sctx.counters->c_rcvd);
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return (int)counters.c_rcvd;
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return (int)sctx.counters->c_rcvd;
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}
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@@ -492,3 +358,149 @@ int is_blocked_by_tcp_wrappers(int sd){
|
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#endif
|
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|
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|
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void process_written_file(struct session_ctx *sctx, struct session_data *sdata, struct __data *data, struct __config *cfg){
|
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int i;
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char *rcpt, *status = NULL, *arule = NULL;
|
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char virusinfo[SMALLBUFSIZE], delay[SMALLBUFSIZE], tmpbuf[SMALLBUFSIZE];
|
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struct parser_state parser_state;
|
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struct timezone tz;
|
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struct timeval tv1, tv2;
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gettimeofday(&tv1, &tz);
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|
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data->folder = 0;
|
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parser_state = parse_message(sdata, 1, data, cfg);
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post_parse(sdata, &parser_state, cfg);
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gettimeofday(&tv2, &tz);
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sdata->__parsed = tvdiff(tv2, tv1);
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|
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if(cfg->syslog_recipients == 1){
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rcpt = parser_state.b_to;
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do {
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rcpt = split_str(rcpt, " ", tmpbuf, sizeof(tmpbuf)-1);
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if(does_it_seem_like_an_email_address(tmpbuf) == 1){
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syslog(LOG_PRIORITY, "%s: rcpt=%s", sdata->ttmpfile, tmpbuf);
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}
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} while(rcpt);
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}
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|
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: parsed message", sdata->ttmpfile);
|
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|
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if(cfg->archive_only_mydomains == 1 && sdata->internal_sender == 0 && sdata->internal_recipient == 0){
|
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remove_stripped_attachments(&parser_state);
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sctx->inj = ERR_MYDOMAINS;
|
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|
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snprintf(sdata->acceptbuf, SMALLBUFSIZE-1, "250 Ok %s\r\n", sdata->ttmpfile);
|
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write1(sctx->new_sd, sdata->acceptbuf, strlen(sdata->acceptbuf), sdata->tls, data->ssl);
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||||
|
||||
syslog(LOG_PRIORITY, "%s: discarding: not on mydomains, from=%s, message-id=%s", sdata->ttmpfile, sdata->fromemail, parser_state.message_id);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
make_digests(sdata, cfg);
|
||||
|
||||
|
||||
|
||||
#ifdef HAVE_ANTIVIRUS
|
||||
if(cfg->use_antivirus == 1){
|
||||
sdata->rav = do_av_check(sdata, &virusinfo[0], data, cfg);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef HAVE_LMTP
|
||||
for(i=0; i<sdata->num_of_rcpt_to; i++){
|
||||
#else
|
||||
i = 0;
|
||||
#endif
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: round %d in injection", sdata->ttmpfile, i);
|
||||
|
||||
sctx->inj = ERR;
|
||||
status = S_STATUS_UNDEF;
|
||||
|
||||
|
||||
if(sctx->db_conn == 1){
|
||||
|
||||
if(sdata->restored_copy == 1){
|
||||
syslog(LOG_PRIORITY, "%s: discarding: restored copy", sdata->ttmpfile);
|
||||
sctx->inj = OK;
|
||||
}
|
||||
else if(sdata->tot_len < cfg->min_message_size){
|
||||
syslog(LOG_PRIORITY, "%s: discarding: too short message (%d bytes)", sdata->ttmpfile, sdata->tot_len);
|
||||
sctx->inj = OK;
|
||||
}
|
||||
else if(AVIR_VIRUS == sdata->rav){
|
||||
syslog(LOG_PRIORITY, "%s: found virus: %s", sdata->ttmpfile, virusinfo);
|
||||
sctx->counters->c_virus++;
|
||||
sctx->inj = OK;
|
||||
} else if(strlen(sdata->bodydigest) < 10) {
|
||||
syslog(LOG_PRIORITY, "%s: invalid digest", sdata->ttmpfile);
|
||||
sctx->inj = ERR;
|
||||
} else {
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: processing message", sdata->ttmpfile);
|
||||
|
||||
/* check message against archiving rules */
|
||||
|
||||
arule = check_againt_ruleset(data->archiving_rules, &parser_state, sdata->tot_len, sdata->spam_message);
|
||||
|
||||
if(arule){
|
||||
syslog(LOG_PRIORITY, "%s: discarding: archiving policy: *%s*", sdata->ttmpfile, arule);
|
||||
sctx->inj = OK;
|
||||
sctx->counters->c_ignore++;
|
||||
|
||||
remove_stripped_attachments(&parser_state);
|
||||
|
||||
status = S_STATUS_DISCARDED;
|
||||
}
|
||||
else {
|
||||
sctx->inj = process_message(sdata, &parser_state, data, cfg);
|
||||
unlink(parser_state.message_id_hash);
|
||||
sctx->counters->c_size += sdata->tot_len;
|
||||
sctx->counters->c_stored_size = sdata->stored_len;
|
||||
|
||||
status = S_STATUS_STORED;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
} /* db_conn */
|
||||
|
||||
/* set the accept buffer */
|
||||
|
||||
snprintf(sdata->acceptbuf, SMALLBUFSIZE-1, "250 Ok %s <%s>\r\n", sdata->ttmpfile, sdata->rcptto[i]);
|
||||
|
||||
if(sctx->inj == ERR){
|
||||
snprintf(sdata->acceptbuf, SMALLBUFSIZE-1, "451 %s <%s>\r\n", sdata->ttmpfile, sdata->rcptto[i]);
|
||||
status = S_STATUS_ERROR;
|
||||
}
|
||||
|
||||
write1(sctx->new_sd, sdata->acceptbuf, strlen(sdata->acceptbuf), sdata->tls, data->ssl);
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: sent: %s", sdata->ttmpfile, sdata->acceptbuf);
|
||||
|
||||
sctx->counters->c_rcvd++;
|
||||
|
||||
if(sctx->inj == ERR_EXISTS){
|
||||
syslog(LOG_PRIORITY, "%s: discarding: duplicate message, id: %llu, message-id: %s", sdata->ttmpfile, sdata->duplicate_id, parser_state.message_id);
|
||||
sctx->counters->c_duplicate++;
|
||||
status = S_STATUS_DUPLICATE;
|
||||
}
|
||||
|
||||
snprintf(delay, SMALLBUFSIZE-1, "delay=%.2f, delays=%.2f/%.2f/%.2f/%.2f/%.2f/%.2f",
|
||||
(sdata->__acquire+sdata->__parsed+sdata->__av+sdata->__compress+sdata->__encrypt+sdata->__store)/1000000.0,
|
||||
sdata->__acquire/1000000.0, sdata->__parsed/1000000.0, sdata->__av/1000000.0, sdata->__compress/1000000.0, sdata->__encrypt/1000000.0, sdata->__store/1000000.0);
|
||||
|
||||
syslog(LOG_PRIORITY, "%s: from=%s, size=%d/%d, attachments=%d, reference=%s, message-id=%s, retention=%d, folder=%d, %s, status=%s", sdata->ttmpfile, sdata->fromemail, sdata->tot_len,
|
||||
sdata->stored_len, parser_state.n_attachments, parser_state.reference, parser_state.message_id, parser_state.retention, data->folder, delay, status);
|
||||
|
||||
#ifdef HAVE_LMTP
|
||||
} /* for */
|
||||
#endif
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user