mirror of
https://bitbucket.org/jsuto/piler.git
synced 2024-12-24 18:50:12 +01:00
improved the smtp engine to handle partial commands
This commit is contained in:
SJ
parent
b0c97aa129
commit
43c1eafc48
2
configure
vendored
2
configure
vendored
@ -4889,7 +4889,7 @@ echo; echo
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CFLAGS="$static -O2 -Wall -g"
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LIBS="$antispam_libs $sunos_libs "
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OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o session.o message.o attachment.o digest.o store.o archive.o tai.o import.o imap.o pop3.o extract.o mydomains.o $objs"
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OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o smtp.o session.o message.o attachment.o digest.o store.o archive.o tai.o import.o imap.o pop3.o extract.o mydomains.o $objs"
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ac_config_files="$ac_config_files Makefile src/Makefile etc/Makefile util/Makefile init.d/Makefile unit_tests/Makefile contrib/imap/Makefile"
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@ -556,7 +556,7 @@ echo; echo
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CFLAGS="$static -O2 -Wall -g"
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LIBS="$antispam_libs $sunos_libs "
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OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o session.o message.o attachment.o digest.o store.o archive.o tai.o import.o imap.o pop3.o extract.o mydomains.o $objs"
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OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o smtp.o session.o message.o attachment.o digest.o store.o archive.o tai.o import.o imap.o pop3.o extract.o mydomains.o $objs"
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AC_CONFIG_FILES([Makefile src/Makefile etc/Makefile util/Makefile init.d/Makefile unit_tests/Makefile contrib/imap/Makefile])
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AC_OUTPUT
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@ -96,10 +96,6 @@ struct _parse_rule config_parse_rules[] =
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{ "pemfile", "string", (void*) string_parser, offsetof(struct __config, pemfile), "", MAXVAL-1},
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{ "pidfile", "string", (void*) string_parser, offsetof(struct __config, pidfile), PIDFILE, MAXVAL-1},
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{ "piler_header_field", "string", (void*) string_parser, offsetof(struct __config, piler_header_field), "X-piler-id:", MAXVAL-1},
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{ "pilergetd_listen_addr", "string", (void*) string_parser, offsetof(struct __config, pilergetd_listen_addr), "127.0.0.1", MAXVAL-1},
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{ "pilergetd_listen_port", "integer", (void*) int_parser, offsetof(struct __config, pilergetd_listen_port), "10091", sizeof(int)},
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{ "pilergetd_password", "string", (void*) string_parser, offsetof(struct __config, pilergetd_password), "xxxxxxxxxx", MAXVAL-1},
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{ "pilergetd_pidfile", "string", (void*) string_parser, offsetof(struct __config, pilergetd_pidfile), PILERGETD_PIDFILE, MAXVAL-1},
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{ "process_rcpt_to_addresses", "integer", (void*) int_parser, offsetof(struct __config, process_rcpt_to_addresses), "0", sizeof(int)},
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{ "queuedir", "string", (void*) string_parser, offsetof(struct __config, queuedir), QUEUE_DIR, MAXVAL-1},
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{ "server_id", "integer", (void*) int_parser, offsetof(struct __config, server_id), "0", sizeof(int)},
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@ -15,16 +15,10 @@ struct __config {
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int hostid_len;
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char pidfile[MAXVAL];
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char pilergetd_pidfile[MAXVAL];
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char listen_addr[MAXVAL];
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int listen_port;
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char pilergetd_listen_addr[MAXVAL];
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int pilergetd_listen_port;
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char pilergetd_password[MAXVAL];
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char clamd_addr[MAXVAL];
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int clamd_port;
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char clamd_socket[MAXVAL];
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@ -10,11 +10,10 @@
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#include "params.h"
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#define PROGNAME "piler"
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#define PILERGETD_PROGNAME "pilergetd"
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#define VERSION "1.2.0-master"
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#define BUILD 928
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#define BUILD 929
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#define HOSTID "mailarchiver"
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@ -25,7 +24,6 @@
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#define CLAMD_SOCKET "/tmp/clamd"
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#define PIDFILE "/var/run/piler/piler.pid"
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#define PILERGETD_PIDFILE "/var/run/piler/pilergetd.pid"
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#define QUARANTINELEN 255
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#define TIMEOUT 60
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#define TIMEOUT_USEC 500000
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192
src/session.c
192
src/session.c
@ -17,13 +17,13 @@
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include <piler.h>
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#include "smtp.h"
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int is_blocked_by_tcp_wrappers(int sd);
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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, n, inj=ERR, protocol_state, prevlen=0;
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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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@ -39,7 +39,6 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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#ifdef HAVE_STARTTLS
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int starttls = 0;
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char ssl_error[SMALLBUFSIZE];
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#endif
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@ -87,7 +86,7 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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send(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, MAXBUFSIZE, TIMEOUT, sdata.tls, data->ssl)) > 0){
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while((n = recvtimeoutssl(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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@ -307,7 +306,7 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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pos = 0;
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}
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} /* PERIOD found */
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} /* pos > 0, PERIOD found */
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else {
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ret = write(sdata.fd, puf, n);
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sdata.tot_len += ret;
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@ -318,28 +317,37 @@ int handle_smtp_session(int new_sd, struct __data *data, struct __config *cfg){
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continue;
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}
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} /* SMTP DATA */
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} /* if protocol_state == SMTP_STATE_DATA */
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AFTER_PERIOD:
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/* handle smtp commands */
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memset(resp, 0, MAXBUFSIZE);
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memset(resp, 0, sizeof(resp));
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p = &puf[pos];
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readpos = 0;
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: command=*%s*", sdata.ttmpfile, p);
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do {
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p = split(p, '\n', buf, sizeof(buf)-1, &result);
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if(result == 0){
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if(strlen(buf) > 0){
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: partial read: *%s*", sdata.ttmpfile, buf);
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snprintf(puf, sizeof(puf)-5, "%s", buf);
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readpos = strlen(puf);
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}
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break;
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}
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while((p = split_str(p, "\r\n", buf, MAXBUFSIZE-1))){
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: got: %s", sdata.ttmpfile, buf);
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if(strncasecmp(buf, SMTP_CMD_EHLO, strlen(SMTP_CMD_EHLO)) == 0 || strncasecmp(buf, LMTP_CMD_LHLO, strlen(LMTP_CMD_LHLO)) == 0){
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if(protocol_state == SMTP_STATE_INIT) protocol_state = SMTP_STATE_HELO;
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if(sdata.tls == 0) snprintf(buf, MAXBUFSIZE-1, SMTP_RESP_250_EXTENSIONS, cfg->hostid, data->starttls);
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else snprintf(buf, MAXBUFSIZE-1, SMTP_RESP_250_EXTENSIONS, cfg->hostid, "");
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strncat(resp, buf, MAXBUFSIZE-1);
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process_command_ehlo_lhlo(&sdata, data, &protocol_state, buf, &resp[0], sizeof(resp)-1, cfg);
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continue;
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/* FIXME: implement the ENHANCEDSTATUSCODE extensions */
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@ -348,198 +356,73 @@ AFTER_PERIOD:
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if(strncasecmp(buf, SMTP_CMD_HELO, strlen(SMTP_CMD_HELO)) == 0){
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if(protocol_state == SMTP_STATE_INIT) protocol_state = SMTP_STATE_HELO;
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strncat(resp, SMTP_RESP_250_OK, MAXBUFSIZE-1);
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strncat(resp, SMTP_RESP_250_OK, sizeof(resp)-1);
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continue;
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}
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#ifdef HAVE_STARTTLS
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if(cfg->tls_enable > 0 && strncasecmp(buf, SMTP_CMD_STARTTLS, strlen(SMTP_CMD_STARTTLS)) == 0 && strlen(data->starttls) > 4 && sdata.tls == 0){
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: starttls request from client", sdata.ttmpfile);
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if(data->ctx){
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data->ssl = SSL_new(data->ctx);
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if(data->ssl){
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SSL_set_options(data->ssl, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3);
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if(SSL_set_fd(data->ssl, new_sd) == 1){
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strncat(resp, SMTP_RESP_220_READY_TO_START_TLS, MAXBUFSIZE-1);
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starttls = 1;
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protocol_state = SMTP_STATE_INIT;
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continue;
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} syslog(LOG_PRIORITY, "%s: SSL_set_fd() failed", sdata.ttmpfile);
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} syslog(LOG_PRIORITY, "%s: SSL_new() failed", sdata.ttmpfile);
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} syslog(LOG_PRIORITY, "%s: SSL ctx is null!", sdata.ttmpfile);
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strncat(resp, SMTP_RESP_454_ERR_TLS_TEMP_ERROR, MAXBUFSIZE-1);
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process_command_starttls(&sdata, data, &protocol_state, &starttls, buf, new_sd, &resp[0], sizeof(resp)-1, cfg);
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continue;
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}
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#endif
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if(strncasecmp(buf, SMTP_CMD_MAIL_FROM, strlen(SMTP_CMD_MAIL_FROM)) == 0){
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if(protocol_state != SMTP_STATE_HELO && protocol_state != SMTP_STATE_PERIOD){
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strncat(resp, SMTP_RESP_503_ERR, MAXBUFSIZE-1);
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}
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else {
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if(protocol_state == SMTP_STATE_PERIOD){
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: initiated new transaction", sdata.ttmpfile);
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unlink(sdata.ttmpfile);
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unlink(sdata.tmpframe);
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init_session_data(&sdata, cfg);
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}
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protocol_state = SMTP_STATE_MAIL_FROM;
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snprintf(sdata.mailfrom, SMALLBUFSIZE-1, "%s\r\n", buf);
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memset(sdata.fromemail, 0, SMALLBUFSIZE);
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extractEmail(sdata.mailfrom, sdata.fromemail);
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strncat(resp, SMTP_RESP_250_OK, strlen(SMTP_RESP_250_OK));
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}
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process_command_mail_from(&sdata, &protocol_state, buf, &resp[0], sizeof(resp)-1, cfg);
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continue;
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}
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if(strncasecmp(buf, SMTP_CMD_RCPT_TO, strlen(SMTP_CMD_RCPT_TO)) == 0){
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if(protocol_state == SMTP_STATE_MAIL_FROM || protocol_state == SMTP_STATE_RCPT_TO){
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if(strlen(buf) > SMALLBUFSIZE/2){
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strncat(resp, SMTP_RESP_550_ERR_TOO_LONG_RCPT_TO, MAXBUFSIZE-1);
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continue;
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}
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if(sdata.num_of_rcpt_to < MAX_RCPT_TO-1){
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extractEmail(buf, sdata.rcptto[sdata.num_of_rcpt_to]);
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}
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protocol_state = SMTP_STATE_RCPT_TO;
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if(sdata.num_of_rcpt_to < MAX_RCPT_TO-1) sdata.num_of_rcpt_to++;
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strncat(resp, SMTP_RESP_250_OK, MAXBUFSIZE-1);
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}
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else {
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strncat(resp, SMTP_RESP_503_ERR, MAXBUFSIZE-1);
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}
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process_command_rcpt_to(&sdata, &protocol_state, buf, &resp[0], sizeof(resp)-1, cfg);
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continue;
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}
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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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prevlen = 0;
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if(protocol_state != SMTP_STATE_RCPT_TO){
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strncat(resp, SMTP_RESP_503_ERR, MAXBUFSIZE-1);
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}
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else {
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sdata.fd = open(sdata.filename, O_CREAT|O_RDWR, S_IRUSR|S_IWUSR|S_IRGRP);
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if(sdata.fd == -1){
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syslog(LOG_PRIORITY, "%s: %s", ERR_OPEN_TMP_FILE, sdata.ttmpfile);
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strncat(resp, SMTP_RESP_451_ERR, MAXBUFSIZE-1);
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}
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else {
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protocol_state = SMTP_STATE_DATA;
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strncat(resp, SMTP_RESP_354_DATA_OK, MAXBUFSIZE-1);
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}
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}
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process_command_data(&sdata, &protocol_state, buf, &resp[0], sizeof(resp)-1, cfg);
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continue;
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}
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if(strncasecmp(buf, SMTP_CMD_QUIT, strlen(SMTP_CMD_QUIT)) == 0){
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protocol_state = SMTP_STATE_FINISHED;
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snprintf(buf, MAXBUFSIZE-1, SMTP_RESP_221_GOODBYE, cfg->hostid);
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strncat(resp, buf, MAXBUFSIZE-1);
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unlink(sdata.ttmpfile);
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unlink(sdata.tmpframe);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: removed", sdata.ttmpfile);
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process_command_quit(&sdata, &protocol_state, buf, &resp[0], sizeof(resp)-1, cfg);
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continue;
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}
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if(strncasecmp(buf, SMTP_CMD_NOOP, strlen(SMTP_CMD_NOOP)) == 0){
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strncat(resp, SMTP_RESP_250_OK, MAXBUFSIZE-1);
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strncat(resp, SMTP_RESP_250_OK, sizeof(resp)-1);
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continue;
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}
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if(strncasecmp(buf, SMTP_CMD_RESET, strlen(SMTP_CMD_RESET)) == 0){
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strncat(resp, SMTP_RESP_250_OK, MAXBUFSIZE-1);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: removed", sdata.ttmpfile);
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unlink(sdata.ttmpfile);
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unlink(sdata.tmpframe);
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init_session_data(&sdata, cfg);
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protocol_state = SMTP_STATE_HELO;
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process_command_reset(&sdata, &protocol_state, buf, &resp[0], sizeof(resp)-1, cfg);
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continue;
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}
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/* by default send 502 command not implemented message */
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syslog(LOG_PRIORITY, "%s: invalid command: *%s*", sdata.ttmpfile, buf);
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strncat(resp, SMTP_RESP_502_ERR, MAXBUFSIZE-1);
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}
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strncat(resp, SMTP_RESP_502_ERR, sizeof(resp)-1);
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} while(p);
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/* now we can send our buffered response */
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if(strlen(resp) > 0){
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write1(new_sd, resp, strlen(resp), sdata.tls, data->ssl);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: sent: %s", sdata.ttmpfile, resp);
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memset(resp, 0, MAXBUFSIZE);
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#ifdef HAVE_STARTTLS
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if(starttls == 1 && sdata.tls == 0){
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: waiting for ssl handshake", sdata.ttmpfile);
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rc = SSL_accept(data->ssl);
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if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: SSL_accept() finished", sdata.ttmpfile);
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if(rc == 1){
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sdata.tls = 1;
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send_buffered_response(&sdata, data, &protocol_state, starttls, buf, new_sd, &resp[0], sizeof(resp)-1, cfg);
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memset(resp, 0, sizeof(resp));
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}
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else {
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ERR_error_string_n(ERR_get_error(), ssl_error, SMALLBUFSIZE);
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syslog(LOG_PRIORITY, "%s: SSL_accept() failed, rc=%d, errorcode: %d, error text: %s\n", sdata.ttmpfile, rc, SSL_get_error(data->ssl, rc), ssl_error);
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}
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}
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#endif
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}
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if(protocol_state == SMTP_STATE_FINISHED){
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goto QUITTING;
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}
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@ -610,3 +493,4 @@ int is_blocked_by_tcp_wrappers(int sd){
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}
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#endif
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194
src/smtp.c
Normal file
194
src/smtp.c
Normal file
@ -0,0 +1,194 @@
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/*
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* smtp.c, SJ
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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||||
#include <sys/stat.h>
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||||
#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <syslog.h>
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#include <time.h>
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||||
#include <openssl/ssl.h>
|
||||
#include <openssl/err.h>
|
||||
#include <piler.h>
|
||||
|
||||
|
||||
void process_command_ehlo_lhlo(struct session_data *sdata, struct __data *data, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg){
|
||||
char tmpbuf[MAXBUFSIZE];
|
||||
|
||||
if(*protocol_state == SMTP_STATE_INIT) *protocol_state = SMTP_STATE_HELO;
|
||||
|
||||
if(sdata->tls == 0) snprintf(tmpbuf, sizeof(tmpbuf)-1, SMTP_RESP_250_EXTENSIONS, cfg->hostid, data->starttls);
|
||||
else snprintf(tmpbuf, sizeof(tmpbuf)-1, SMTP_RESP_250_EXTENSIONS, cfg->hostid, "");
|
||||
|
||||
strncat(resp, tmpbuf, resplen);
|
||||
}
|
||||
|
||||
|
||||
#ifdef HAVE_STARTTLS
|
||||
void process_command_starttls(struct session_data *sdata, struct __data *data, int *protocol_state, int *starttls, char *buf, int new_sd, char *resp, int resplen, struct __config *cfg){
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: starttls request from client", sdata->ttmpfile);
|
||||
|
||||
if(data->ctx){
|
||||
data->ssl = SSL_new(data->ctx);
|
||||
if(data->ssl){
|
||||
|
||||
SSL_set_options(data->ssl, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3);
|
||||
|
||||
if(SSL_set_fd(data->ssl, new_sd) == 1){
|
||||
strncat(resp, SMTP_RESP_220_READY_TO_START_TLS, resplen);
|
||||
*starttls = 1;
|
||||
*protocol_state = SMTP_STATE_INIT;
|
||||
return;
|
||||
} syslog(LOG_PRIORITY, "%s: SSL_set_fd() failed", sdata->ttmpfile);
|
||||
} syslog(LOG_PRIORITY, "%s: SSL_new() failed", sdata->ttmpfile);
|
||||
} syslog(LOG_PRIORITY, "%s: SSL ctx is null!", sdata->ttmpfile);
|
||||
|
||||
strncat(resp, SMTP_RESP_454_ERR_TLS_TEMP_ERROR, resplen);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
void process_command_mail_from(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg){
|
||||
|
||||
if(*protocol_state != SMTP_STATE_HELO && *protocol_state != SMTP_STATE_PERIOD){
|
||||
strncat(resp, SMTP_RESP_503_ERR, resplen);
|
||||
}
|
||||
else {
|
||||
if(*protocol_state == SMTP_STATE_PERIOD){
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: initiated new transaction", sdata->ttmpfile);
|
||||
|
||||
unlink(sdata->ttmpfile);
|
||||
unlink(sdata->tmpframe);
|
||||
|
||||
init_session_data(sdata, cfg);
|
||||
}
|
||||
|
||||
*protocol_state = SMTP_STATE_MAIL_FROM;
|
||||
|
||||
snprintf(sdata->mailfrom, SMALLBUFSIZE-1, "%s\r\n", buf);
|
||||
|
||||
memset(sdata->fromemail, 0, SMALLBUFSIZE);
|
||||
extractEmail(sdata->mailfrom, sdata->fromemail);
|
||||
|
||||
strncat(resp, SMTP_RESP_250_OK, strlen(SMTP_RESP_250_OK));
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
void process_command_rcpt_to(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg){
|
||||
|
||||
if(*protocol_state == SMTP_STATE_MAIL_FROM || *protocol_state == SMTP_STATE_RCPT_TO){
|
||||
|
||||
if(strlen(buf) > SMALLBUFSIZE/2){
|
||||
strncat(resp, SMTP_RESP_550_ERR_TOO_LONG_RCPT_TO, resplen);
|
||||
return;
|
||||
}
|
||||
|
||||
if(sdata->num_of_rcpt_to < MAX_RCPT_TO-1){
|
||||
extractEmail(buf, sdata->rcptto[sdata->num_of_rcpt_to]);
|
||||
}
|
||||
|
||||
*protocol_state = SMTP_STATE_RCPT_TO;
|
||||
|
||||
if(sdata->num_of_rcpt_to < MAX_RCPT_TO-1) sdata->num_of_rcpt_to++;
|
||||
|
||||
strncat(resp, SMTP_RESP_250_OK, resplen);
|
||||
}
|
||||
else {
|
||||
strncat(resp, SMTP_RESP_503_ERR, resplen);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void process_command_data(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg){
|
||||
|
||||
if(*protocol_state != SMTP_STATE_RCPT_TO){
|
||||
strncat(resp, SMTP_RESP_503_ERR, resplen);
|
||||
}
|
||||
else {
|
||||
sdata->fd = open(sdata->filename, O_CREAT|O_RDWR, S_IRUSR|S_IWUSR|S_IRGRP);
|
||||
if(sdata->fd == -1){
|
||||
syslog(LOG_PRIORITY, "%s: %s", ERR_OPEN_TMP_FILE, sdata->ttmpfile);
|
||||
strncat(resp, SMTP_RESP_451_ERR, resplen);
|
||||
}
|
||||
else {
|
||||
*protocol_state = SMTP_STATE_DATA;
|
||||
strncat(resp, SMTP_RESP_354_DATA_OK, resplen-1);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
void process_command_quit(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg){
|
||||
char tmpbuf[MAXBUFSIZE];
|
||||
|
||||
*protocol_state = SMTP_STATE_FINISHED;
|
||||
|
||||
snprintf(tmpbuf, sizeof(tmpbuf)-1, SMTP_RESP_221_GOODBYE, cfg->hostid);
|
||||
strncat(resp, tmpbuf, resplen);
|
||||
|
||||
unlink(sdata->ttmpfile);
|
||||
unlink(sdata->tmpframe);
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: removed", sdata->ttmpfile);
|
||||
}
|
||||
|
||||
|
||||
void process_command_reset(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg){
|
||||
|
||||
strncat(resp, SMTP_RESP_250_OK, resplen);
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: removed", sdata->ttmpfile);
|
||||
|
||||
unlink(sdata->ttmpfile);
|
||||
unlink(sdata->tmpframe);
|
||||
|
||||
init_session_data(sdata, cfg);
|
||||
|
||||
*protocol_state = SMTP_STATE_HELO;
|
||||
}
|
||||
|
||||
|
||||
void send_buffered_response(struct session_data *sdata, struct __data *data, int *protocol_state, int starttls, char *buf, int new_sd, char *resp, int resplen, struct __config *cfg){
|
||||
int rc;
|
||||
#ifdef HAVE_STARTTLS
|
||||
char ssl_error[SMALLBUFSIZE];
|
||||
#endif
|
||||
|
||||
write1(new_sd, resp, strlen(resp), sdata->tls, data->ssl);
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: sent: %s", sdata->ttmpfile, resp);
|
||||
memset(resp, 0, MAXBUFSIZE);
|
||||
|
||||
#ifdef HAVE_STARTTLS
|
||||
if(starttls == 1 && sdata->tls == 0){
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: waiting for ssl handshake", sdata->ttmpfile);
|
||||
|
||||
rc = SSL_accept(data->ssl);
|
||||
|
||||
if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: SSL_accept() finished", sdata->ttmpfile);
|
||||
|
||||
if(rc == 1){
|
||||
sdata->tls = 1;
|
||||
}
|
||||
else {
|
||||
ERR_error_string_n(ERR_get_error(), ssl_error, SMALLBUFSIZE);
|
||||
syslog(LOG_PRIORITY, "%s: SSL_accept() failed, rc=%d, errorcode: %d, error text: %s\n", sdata->ttmpfile, rc, SSL_get_error(data->ssl, rc), ssl_error);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
18
src/smtp.h
Normal file
18
src/smtp.h
Normal file
@ -0,0 +1,18 @@
|
||||
/*
|
||||
* smtp.h, SJ
|
||||
*/
|
||||
|
||||
#ifndef _SMTP_H
|
||||
#define _SMTP_H
|
||||
|
||||
void process_command_ehlo_lhlo(struct session_data *sdata, struct __data *data, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg);
|
||||
void process_command_starttls(struct session_data *sdata, struct __data *data, int *protocol_state, int *starttls, char *buf, int new_sd, char *resp, int resplen, struct __config *cfg);
|
||||
void process_command_mail_from(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg);
|
||||
void process_command_rcpt_to(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg);
|
||||
void process_command_data(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg);
|
||||
void process_command_quit(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg);
|
||||
void process_command_reset(struct session_data *sdata, int *protocol_state, char *buf, char *resp, int resplen, struct __config *cfg);
|
||||
|
||||
void send_buffered_response(struct session_data *sdata, struct __data *data, int *protocol_state, int starttls, char *buf, int new_sd, char *resp, int resplen, struct __config *cfg);
|
||||
|
||||
#endif /* _SMTP_H */
|
||||
@ -24,13 +24,16 @@ RUNNING_GROUP = `@id_bin@ -gn $(RUNNING_USER)`
|
||||
|
||||
INSTALL = @INSTALL@
|
||||
|
||||
all: check_parser_utils
|
||||
all: check_parser_utils smtp
|
||||
|
||||
check_parser_utils: check_parser_utils.c ../src/libpiler.a
|
||||
$(CC) $(CFLAGS) $(INCDIR) $(DEFS) -o $@ $< -lpiler $(LIBS) $(LIBDIR)
|
||||
|
||||
smtp: smtp.c ../src/libpiler.a
|
||||
$(CC) $(CFLAGS) $(INCDIR) $(DEFS) -o $@ $< -lpiler $(LIBS) $(LIBDIR)
|
||||
|
||||
clean:
|
||||
rm -f check_parser_utils
|
||||
rm -f check_parser_utils smtp
|
||||
|
||||
distclean: clean
|
||||
rm -f Makefile
|
||||
|
||||
291
unit_tests/smtp.c
Normal file
291
unit_tests/smtp.c
Normal file
@ -0,0 +1,291 @@
|
||||
/*
|
||||
* smtp.c, SJ
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <sys/time.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netdb.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <netinet/in.h>
|
||||
#include <fcntl.h>
|
||||
#include <locale.h>
|
||||
#include <getopt.h>
|
||||
#include <stdbool.h>
|
||||
#include <assert.h>
|
||||
#include "../src/piler.h"
|
||||
|
||||
|
||||
extern char *optarg;
|
||||
extern int optind;
|
||||
|
||||
char *testmessage = "From: aaa@aaa.fu\nTo: bela@aaa.fu\nMessage-Id: ajajajaja\nSubject: this is a test\n\nAaaaaa.";
|
||||
|
||||
|
||||
int connect_to_smtp_server(char *server, int port, int timeout, int use_ssl, struct __data *data);
|
||||
|
||||
|
||||
void usage(){
|
||||
printf("\nusage: smtp\n\n");
|
||||
printf(" -s <smtp server> SMTP server\n");
|
||||
printf(" -p <smtp port> SMTP port (25)\n");
|
||||
printf(" -t <timeout> Timeout in sec (10)\n");
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
|
||||
void send_smtp_command(int sd, char *cmd, char *buf, int buflen, int timeout, int use_ssl, struct __data *data){
|
||||
|
||||
printf("sent: %s", cmd);
|
||||
write1(sd, cmd, strlen(cmd), use_ssl, data->ssl);
|
||||
recvtimeoutssl(sd, buf, buflen, timeout, use_ssl, data->ssl);
|
||||
printf("rcvd: %s", buf);
|
||||
|
||||
}
|
||||
|
||||
|
||||
static void test_smtp_commands_one_at_a_time(char *server, int port, int timeout){
|
||||
int sd, use_ssl = 0;
|
||||
char recvbuf[MAXBUFSIZE], sendbuf[MAXBUFSIZE];
|
||||
struct __data data;
|
||||
|
||||
sd = connect_to_smtp_server(server, port, timeout, use_ssl, &data);
|
||||
|
||||
send_smtp_command(sd, "HELO aaaa.fu\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "HELO");
|
||||
|
||||
send_smtp_command(sd, "MAIL FROM: <sender@aaa.fu>\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "MAIL");
|
||||
|
||||
send_smtp_command(sd, "RCPT TO: <archive@aaa.fu>\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "RCPT");
|
||||
|
||||
send_smtp_command(sd, "DATA\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "354 ", 4) == 0 && "DATA");
|
||||
|
||||
snprintf(sendbuf, sizeof(sendbuf)-1, "%s\r\n.\r\n", testmessage);
|
||||
|
||||
send_smtp_command(sd, sendbuf, recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "PERIOD");
|
||||
|
||||
send_smtp_command(sd, "QUIT\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "221 ", 4) == 0 && "QUIT");
|
||||
|
||||
close(sd);
|
||||
}
|
||||
|
||||
|
||||
static void test_smtp_commands_pipelining(char *server, int port, int timeout){
|
||||
int sd, use_ssl = 0;
|
||||
char recvbuf[MAXBUFSIZE], sendbuf[MAXBUFSIZE];
|
||||
struct __data data;
|
||||
|
||||
sd = connect_to_smtp_server(server, port, timeout, use_ssl, &data);
|
||||
|
||||
send_smtp_command(sd, "HELO aaaa.fu\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "HELO");
|
||||
|
||||
send_smtp_command(sd, "MAIL FROM: <sender@aaa.fu>\r\nRCPT TO: <archive@aaa.fu>\r\nDATA\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "MAIL");
|
||||
|
||||
snprintf(sendbuf, sizeof(sendbuf)-1, "%s\r\n.\r\nQUIT\r\n", testmessage);
|
||||
|
||||
send_smtp_command(sd, sendbuf, recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "QUIT");
|
||||
|
||||
close(sd);
|
||||
}
|
||||
|
||||
|
||||
static void test_smtp_commands_with_reset_command(char *server, int port, int timeout){
|
||||
int sd, use_ssl = 0;
|
||||
char recvbuf[MAXBUFSIZE];
|
||||
struct __data data;
|
||||
|
||||
sd = connect_to_smtp_server(server, port, timeout, use_ssl, &data);
|
||||
|
||||
send_smtp_command(sd, "HELO aaaa.fu\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "HELO");
|
||||
|
||||
send_smtp_command(sd, "MAIL FROM: <sender@aaa.fu>\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "MAIL");
|
||||
|
||||
send_smtp_command(sd, "RSET\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "RSET");
|
||||
|
||||
send_smtp_command(sd, "RCPT TO: <archive@aaa.fu>\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "503 ", 4) == 0 && "RCPT");
|
||||
|
||||
send_smtp_command(sd, "QUIT\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "221 ", 4) == 0 && "QUIT");
|
||||
|
||||
close(sd);
|
||||
}
|
||||
|
||||
|
||||
static void test_smtp_commands_partial_command(char *server, int port, int timeout){
|
||||
int sd, use_ssl = 0;
|
||||
char recvbuf[MAXBUFSIZE], sendbuf[MAXBUFSIZE];
|
||||
struct __data data;
|
||||
|
||||
sd = connect_to_smtp_server(server, port, timeout, use_ssl, &data);
|
||||
|
||||
send_smtp_command(sd, "HELO aaaa.fu\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "HELO");
|
||||
|
||||
write1(sd, "M", 1, use_ssl, data.ssl);
|
||||
printf("sent: M\n");
|
||||
|
||||
send_smtp_command(sd, "AIL FROM: <sender@aaa.fu>\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "MAIL");
|
||||
|
||||
send_smtp_command(sd, "RCPT TO: <archive@aaa.fu>\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "RCPT");
|
||||
|
||||
send_smtp_command(sd, "DATA\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "354 ", 4) == 0 && "DATA");
|
||||
|
||||
snprintf(sendbuf, sizeof(sendbuf)-1, "%s\r\n.\r\n", testmessage);
|
||||
|
||||
send_smtp_command(sd, sendbuf, recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "PERIOD");
|
||||
|
||||
send_smtp_command(sd, "QUIT\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "221 ", 4) == 0 && "QUIT");
|
||||
|
||||
close(sd);
|
||||
}
|
||||
|
||||
|
||||
static void test_smtp_commands_partial_command_pipelining(char *server, int port, int timeout){
|
||||
int sd, use_ssl = 0;
|
||||
char recvbuf[MAXBUFSIZE], sendbuf[MAXBUFSIZE];
|
||||
struct __data data;
|
||||
|
||||
sd = connect_to_smtp_server(server, port, timeout, use_ssl, &data);
|
||||
|
||||
send_smtp_command(sd, "HELO aaaa.fu\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "HELO");
|
||||
|
||||
write1(sd, "M", 1, use_ssl, data.ssl);
|
||||
printf("sent: M\n");
|
||||
|
||||
send_smtp_command(sd, "AIL FROM: <sender@aaa.fu>\r\nRCPT TO: <archive@aaa.fu>\r\nDATA\r\n", recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "MAIL");
|
||||
|
||||
snprintf(sendbuf, sizeof(sendbuf)-1, "%s\r\n.\r\nQUIT\r\n", testmessage);
|
||||
|
||||
send_smtp_command(sd, sendbuf, recvbuf, sizeof(recvbuf)-1, timeout, use_ssl, &data);
|
||||
assert(strncmp(recvbuf, "250 ", 4) == 0 && "QUIT");
|
||||
|
||||
close(sd);
|
||||
}
|
||||
|
||||
|
||||
int connect_to_smtp_server(char *server, int port, int timeout, int use_ssl, struct __data *data){
|
||||
int rc, sd = -1;
|
||||
char port_string[8], buf[MAXBUFSIZE];
|
||||
struct addrinfo hints, *res;
|
||||
|
||||
snprintf(port_string, sizeof(port_string)-1, "%d", port);
|
||||
|
||||
memset(&hints, 0, sizeof(hints));
|
||||
hints.ai_family = AF_UNSPEC;
|
||||
hints.ai_socktype = SOCK_STREAM;
|
||||
|
||||
if((rc = getaddrinfo(server, port_string, &hints, &res)) != 0){
|
||||
printf("getaddrinfo for '%s': %s\n", server, gai_strerror(rc));
|
||||
return sd;
|
||||
}
|
||||
|
||||
if((sd = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) == -1){
|
||||
printf("cannot create socket\n");
|
||||
goto ENDE;
|
||||
}
|
||||
|
||||
if(connect(sd, res->ai_addr, res->ai_addrlen) == -1){
|
||||
printf("connect()\n");
|
||||
goto ENDE;
|
||||
}
|
||||
|
||||
recvtimeoutssl(sd, buf, sizeof(buf), timeout, use_ssl, data->ssl);
|
||||
printf("rcvd: %s", buf);
|
||||
|
||||
ENDE:
|
||||
freeaddrinfo(res);
|
||||
|
||||
return sd;
|
||||
}
|
||||
|
||||
|
||||
int main(int argc, char **argv){
|
||||
int c, port=25, timeout = 10;
|
||||
char *server=NULL;
|
||||
|
||||
while(1){
|
||||
|
||||
#ifdef _GNU_SOURCE
|
||||
static struct option long_options[] =
|
||||
{
|
||||
{"server", required_argument, 0, 's' },
|
||||
{"port", required_argument, 0, 'p' },
|
||||
{"timeout", required_argument, 0, 't' },
|
||||
{"help", no_argument, 0, 'h' },
|
||||
{0,0,0,0}
|
||||
};
|
||||
|
||||
int option_index = 0;
|
||||
|
||||
c = getopt_long(argc, argv, "c:s:p:t:h?", long_options, &option_index);
|
||||
#else
|
||||
c = getopt(argc, argv, "c:s:p:t:h?");
|
||||
#endif
|
||||
|
||||
|
||||
if(c == -1) break;
|
||||
|
||||
switch(c){
|
||||
|
||||
case 's' :
|
||||
server = optarg;
|
||||
break;
|
||||
|
||||
case 'p' :
|
||||
port = atoi(optarg);
|
||||
break;
|
||||
|
||||
case 't' :
|
||||
timeout = atoi(optarg);
|
||||
break;
|
||||
|
||||
case 'h' :
|
||||
case '?' :
|
||||
usage();
|
||||
break;
|
||||
|
||||
|
||||
default :
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if(!server) usage();
|
||||
|
||||
|
||||
test_smtp_commands_one_at_a_time(server, port, timeout);
|
||||
test_smtp_commands_pipelining(server, port, timeout);
|
||||
test_smtp_commands_with_reset_command(server, port, timeout);
|
||||
test_smtp_commands_partial_command(server, port, timeout);
|
||||
test_smtp_commands_partial_command_pipelining(server, port, timeout);
|
||||
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user