1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003 - 2015
7 * Copyright (c) The Exim Maintainers 2015 - 2018
10 /* Code for calling virus (malware) scanners. Called from acl.c. */
13 #ifdef WITH_CONTENT_SCAN /* entire file */
16 #ifndef DISABLE_MAL_FFROTD
19 #ifndef DISABLE_MAL_FFROT6D
22 #ifndef DISABLE_MAL_DRWEB
25 #ifndef DISABLE_MAL_AVE
28 #ifndef DISABLE_MAL_FSECURE
31 #ifndef DISABLE_MAL_KAV
34 #ifndef DISABLE_MAL_SOPHIE
37 #ifndef DISABLE_MAL_CLAM
40 #ifndef DISABLE_MAL_MKS
43 #ifndef DISABLE_MAL_AVAST
46 #ifndef DISABLE_MAL_SOCK
49 #ifndef DISABLE_MAL_CMDLINE
54 typedef enum {MC_NONE, MC_TCP, MC_UNIX, MC_STRM} contype_t;
59 const uschar * options_default;
63 #ifndef DISABLE_MAL_FFROTD
64 { M_FPROTD, US"f-protd", US"localhost 10200-10204", MC_TCP },
66 #ifndef DISABLE_MAL_FFROT6D
67 { M_FPROT6D, US"f-prot6d", US"localhost 10200", MC_TCP },
69 #ifndef DISABLE_MAL_DRWEB
70 { M_DRWEB, US"drweb", US"/usr/local/drweb/run/drwebd.sock", MC_STRM },
72 #ifndef DISABLE_MAL_AVE
73 { M_AVES, US"aveserver", US"/var/run/aveserver", MC_UNIX },
75 #ifndef DISABLE_MAL_FSECURE
76 { M_FSEC, US"fsecure", US"/var/run/.fsav", MC_UNIX },
78 #ifndef DISABLE_MAL_KAV
79 { M_KAVD, US"kavdaemon", US"/var/run/AvpCtl", MC_UNIX },
81 #ifndef DISABLE_MAL_SOPHIE
82 { M_SOPHIE, US"sophie", US"/var/run/sophie", MC_UNIX },
84 #ifndef DISABLE_MAL_CLAM
85 { M_CLAMD, US"clamd", US"/tmp/clamd", MC_NONE },
87 #ifndef DISABLE_MAL_MKS
88 { M_MKSD, US"mksd", NULL, MC_NONE },
90 #ifndef DISABLE_MAL_AVAST
91 { M_AVAST, US"avast", US"/var/run/avast/scan.sock", MC_STRM },
93 #ifndef DISABLE_MAL_SOCK
94 { M_SOCK, US"sock", US"/tmp/malware.sock", MC_STRM },
96 #ifndef DISABLE_MAL_CMDLINE
97 { M_CMDL, US"cmdline", NULL, MC_NONE },
99 { -1, NULL, NULL, MC_NONE } /* end-marker */
102 /******************************************************************************/
103 # ifdef MACRO_PREDEF /* build solely to predefine macros */
105 # include "macro_predef.h"
108 features_malware(void)
114 spf(buf, sizeof(buf), US"_HAVE_MALWARE_");
116 for (const struct scan * sc = m_scans; sc->scancode != -1; sc++)
118 for (s = sc->name, t = buf+14; *s; s++) if (*s != '-')
121 builtin_macro_create(buf);
125 /******************************************************************************/
126 # else /*!MACRO_PREDEF, main build*/
129 #define MALWARE_TIMEOUT 120 /* default timeout, seconds */
131 static const uschar * malware_regex_default = US ".+";
132 static const pcre * malware_default_re = NULL;
136 #ifndef DISABLE_MAL_CLAM
137 /* The maximum number of clamd servers that are supported in the configuration */
138 # define MAX_CLAMD_SERVERS 32
139 # define MAX_CLAMD_SERVERS_S "32"
141 typedef struct clamd_address {
149 #ifndef DISABLE_MAL_DRWEB
150 # define DRWEBD_SCAN_CMD (1) /* scan file, buffer or diskfile */
151 # define DRWEBD_RETURN_VIRUSES (1<<0) /* ask daemon return to us viruses names from report */
152 # define DRWEBD_IS_MAIL (1<<19) /* say to daemon that format is "archive MAIL" */
154 # define DERR_READ_ERR (1<<0) /* read error */
155 # define DERR_NOMEMORY (1<<2) /* no memory */
156 # define DERR_TIMEOUT (1<<9) /* scan timeout has run out */
157 # define DERR_BAD_CALL (1<<15) /* wrong command */
159 static const uschar * drweb_re_str = US "infected\\swith\\s*(.+?)$";
160 static const pcre * drweb_re = NULL;
163 #ifndef DISABLE_MAL_FSECURE
164 static const uschar * fsec_re_str = US "\\S{0,5}INFECTED\\t[^\\t]*\\t([^\\t]+)\\t\\S*$";
165 static const pcre * fsec_re = NULL;
168 #ifndef DISABLE_MAL_KAV
169 static const uschar * kav_re_sus_str = US "suspicion:\\s*(.+?)\\s*$";
170 static const uschar * kav_re_inf_str = US "infected:\\s*(.+?)\\s*$";
171 static const pcre * kav_re_sus = NULL;
172 static const pcre * kav_re_inf = NULL;
175 #ifndef DISABLE_MAL_AVAST
176 static const uschar * ava_re_clean_str = US "(?!\\\\)\\t\\[\\+\\]";
177 static const uschar * ava_re_virus_str = US "(?!\\\\)\\t\\[L\\]\\d+\\.0\\t0\\s(.*)";
178 static const uschar * ava_re_error_str = US "(?!\\\\)\\t\\[E\\]\\d+\\.0\\tError\\s\\d+\\s(.*)";
179 static const pcre * ava_re_clean = NULL;
180 static const pcre * ava_re_virus = NULL;
181 static const pcre * ava_re_error = NULL;
184 #ifndef DISABLE_MAL_FFROT6D
185 static const uschar * fprot6d_re_error_str = US "^\\d+\\s<(.+?)>$";
186 static const uschar * fprot6d_re_virus_str = US "^\\d+\\s<infected:\\s+(.+?)>\\s+.+$";
187 static const pcre * fprot6d_re_error = NULL;
188 static const pcre * fprot6d_re_virus = NULL;
193 /******************************************************************************/
195 #ifndef DISABLE_MAL_KAV
196 /* Routine to check whether a system is big- or little-endian.
197 Ripped from http://www.faqs.org/faqs/graphics/fileformats-faq/part4/section-7.html
198 Needed for proper kavdaemon implementation. Sigh. */
199 # define BIG_MY_ENDIAN 0
200 # define LITTLE_MY_ENDIAN 1
201 static int test_byte_order(void);
205 short int word = 0x0001;
206 char *byte = CS &word;
207 return(byte[0] ? LITTLE_MY_ENDIAN : BIG_MY_ENDIAN);
211 BOOL malware_ok = FALSE;
213 /* Gross hacks for the -bmalware option; perhaps we should just create
214 the scan directory normally for that case, but look into rigging up the
215 needed header variables if not already set on the command-line? */
216 extern int spool_mbox_ok;
217 extern uschar spooled_message_id[MESSAGE_ID_LENGTH+1];
220 /* Some (currently avast only) use backslash escaped whitespace,
221 this function undoes these escapes */
228 if (*p == '\\' && (isspace(p[1]) || p[1] == '\\'))
229 for (p0 = p; *p0; ++p0) *p0 = p0[1];
232 /* --- malware_*_defer --- */
234 malware_panic_defer(const uschar * str)
236 log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: %s", str);
240 malware_log_defer(const uschar * str)
242 log_write(0, LOG_MAIN, "malware acl condition: %s", str);
245 /* --- m_*_defer --- */
247 m_panic_defer(struct scan * scanent, const uschar * hostport,
250 return malware_panic_defer(string_sprintf("%s %s : %s",
251 scanent->name, hostport ? hostport : CUS"", str));
254 m_log_defer(struct scan * scanent, const uschar * hostport,
257 return malware_log_defer(string_sprintf("%s %s : %s",
258 scanent->name, hostport ? hostport : CUS"", str));
260 /* --- m_*_defer_3 */
262 m_panic_defer_3(struct scan * scanent, const uschar * hostport,
263 const uschar * str, int fd_to_close)
265 (void) close(fd_to_close);
266 return m_panic_defer(scanent, hostport, str);
269 /*************************************************/
271 #ifndef DISABLE_MAL_CLAM
272 /* Only used by the Clamav code, which is working from a list of servers and
273 uses the returned in_addr to get a second connection to the same system.
276 m_tcpsocket(const uschar * hostname, unsigned int port,
277 host_item * host, uschar ** errstr, const blob * fastopen_blob)
279 return ip_connectedsocket(SOCK_STREAM, hostname, port, port, 5,
280 host, errstr, fastopen_blob);
285 m_sock_send(int sock, uschar * buf, int cnt, uschar ** errstr)
287 if (send(sock, buf, cnt, 0) < 0)
291 *errstr = string_sprintf("unable to send to socket (%s): %s",
299 m_pcre_compile(const uschar * re, uschar ** errstr)
301 const uschar * rerror;
305 cre = pcre_compile(CS re, PCRE_COPT, (const char **)&rerror, &roffset, NULL);
307 *errstr= string_sprintf("regular expression error in '%s': %s at offset %d",
308 re, rerror, roffset);
313 m_pcre_exec(const pcre * cre, uschar * text)
316 int i = pcre_exec(cre, NULL, CS text, Ustrlen(text), 0, 0,
317 ovector, nelem(ovector));
318 uschar * substr = NULL;
319 if (i >= 2) /* Got it */
320 pcre_get_substring(CS text, ovector, i, 1, (const char **) &substr);
325 m_pcre_nextinlist(const uschar ** list, int * sep,
326 char * listerr, uschar ** errstr)
328 const uschar * list_ele;
329 const pcre * cre = NULL;
331 if (!(list_ele = string_nextinlist(list, sep, NULL, 0)))
332 *errstr = US listerr;
335 DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "RE: ",
336 string_printing(list_ele));
337 cre = m_pcre_compile(CUS list_ele, errstr);
343 Simple though inefficient wrapper for reading a line. Drop CRs and the
344 trailing newline. Can return early on buffer full. Null-terminate.
345 Apply initial timeout if no data ready.
347 Return: number of chars - zero for an empty line
349 -2 on timeout or error
352 recv_line(int fd, uschar * buffer, int bsize, time_t tmo)
358 if (!fd_ready(fd, tmo))
361 /*XXX tmo handling assumes we always get a whole line */
364 while ((rcv = read(fd, p, 1)) > 0)
367 if (p-buffer > bsize-2) break;
368 if (*p == '\n') break;
373 DEBUG(D_acl) debug_printf_indent("Malware scan: read %s (%s)\n",
374 rcv==0 ? "EOF" : "error", strerror(errno));
375 return rcv==0 ? -1 : -2;
379 DEBUG(D_acl) debug_printf_indent("Malware scan: read '%s'\n", buffer);
383 /* return TRUE iff size as requested */
385 recv_len(int sock, void * buf, int size, time_t tmo)
387 return fd_ready(sock, tmo)
388 ? recv(sock, buf, size, 0) == size
394 #ifndef DISABLE_MAL_MKS
395 /* ============= private routines for the "mksd" scanner type ============== */
397 # include <sys/uio.h>
400 mksd_writev (int sock, struct iovec * iov, int iovcnt)
407 i = writev (sock, iov, iovcnt);
408 while (i < 0 && errno == EINTR);
411 (void) malware_panic_defer(
412 US"unable to write to mksd UNIX socket (/var/run/mksd/socket)");
415 for (;;) /* check for short write */
416 if (i >= iov->iov_len)
426 iov->iov_base = CS iov->iov_base + i;
433 mksd_read_lines (int sock, uschar *av_buffer, int av_buffer_size, time_t tmo)
435 client_conn_ctx cctx = {.sock = sock};
441 i = ip_recv(&cctx, av_buffer+offset, av_buffer_size-offset, tmo);
444 (void) malware_panic_defer(US"unable to read from mksd UNIX socket (/var/run/mksd/socket)");
449 /* offset == av_buffer_size -> buffer full */
450 if (offset == av_buffer_size)
452 (void) malware_panic_defer(US"malformed reply received from mksd");
455 } while (av_buffer[offset-1] != '\n');
457 av_buffer[offset] = '\0';
462 mksd_parse_line(struct scan * scanent, char * line)
473 if ((p = strchr (line, '\n')) != NULL)
475 return m_panic_defer(scanent, NULL,
476 string_sprintf("scanner failed: %s", line));
479 if ((p = strchr (line, '\n')) != NULL)
484 && (p = strchr(line+4, ' ')) != NULL
489 malware_name = string_copy(US line+4);
493 return m_panic_defer(scanent, NULL,
494 string_sprintf("malformed reply received: %s", line));
499 mksd_scan_packed(struct scan * scanent, int sock, const uschar * scan_filename,
503 const char *cmd = "MSQ\n";
504 uschar av_buffer[1024];
506 iov[0].iov_base = (void *) cmd;
508 iov[1].iov_base = (void *) scan_filename;
509 iov[1].iov_len = Ustrlen(scan_filename);
510 iov[2].iov_base = (void *) (cmd + 3);
513 if (mksd_writev (sock, iov, 3) < 0)
516 if (mksd_read_lines (sock, av_buffer, sizeof (av_buffer), tmo) < 0)
519 return mksd_parse_line (scanent, CS av_buffer);
524 #ifndef DISABLE_MAL_CLAM
526 clamd_option(clamd_address * cd, const uschar * optstr, int * subsep)
531 while ((s = string_nextinlist(&optstr, subsep, NULL, 0)))
532 if (Ustrncmp(s, "retry=", 6) == 0)
534 int sec = readconf_readtime((s += 6), '\0', FALSE);
547 /*************************************************
548 * Scan content for malware *
549 *************************************************/
551 /* This is an internal interface for scanning an email; the normal interface
552 is via malware(), or there's malware_in_file() used for testing/debugging.
555 malware_re match condition for "malware="
556 scan_filename the file holding the email to be scanned, if we're faking
557 this up for the -bmalware test, else NULL
558 timeout if nonzero, non-default timeoutl
560 Returns: Exim message processing code (OK, FAIL, DEFER, ...)
561 where true means malware was found (condition applies)
564 malware_internal(const uschar * malware_re, const uschar * scan_filename,
568 const uschar *av_scanner_work = av_scanner;
569 uschar *scanner_name;
570 unsigned long mbox_size;
574 struct scan * scanent;
575 const uschar * scanner_options;
576 client_conn_ctx malware_daemon_ctx = {.sock = -1};
578 uschar * eml_filename, * eml_dir;
581 return FAIL; /* empty means "don't match anything" */
583 /* Ensure the eml mbox file is spooled up */
585 if (!(mbox_file = spool_mbox(&mbox_size, scan_filename, &eml_filename)))
586 return malware_panic_defer(US"error while creating mbox spool file");
588 /* None of our current scanners need the mbox file as a stream (they use
589 the name), so we can close it right away. Get the directory too. */
591 (void) fclose(mbox_file);
592 eml_dir = string_copyn(eml_filename, Ustrrchr(eml_filename, '/') - eml_filename);
594 /* parse 1st option */
595 if (strcmpic(malware_re, US"false") == 0 || Ustrcmp(malware_re,"0") == 0)
596 return FAIL; /* explicitly no matching */
598 /* special cases (match anything except empty) */
599 if ( strcmpic(malware_re,US"true") == 0
600 || Ustrcmp(malware_re,"*") == 0
601 || Ustrcmp(malware_re,"1") == 0
604 if ( !malware_default_re
605 && !(malware_default_re = m_pcre_compile(malware_regex_default, &errstr)))
606 return malware_panic_defer(errstr);
607 malware_re = malware_regex_default;
608 re = malware_default_re;
611 /* compile the regex, see if it works */
612 else if (!(re = m_pcre_compile(malware_re, &errstr)))
613 return malware_panic_defer(errstr);
615 /* if av_scanner starts with a dollar, expand it first */
616 if (*av_scanner == '$')
618 if (!(av_scanner_work = expand_string(av_scanner)))
619 return malware_panic_defer(
620 string_sprintf("av_scanner starts with $, but expansion failed: %s",
621 expand_string_message));
624 debug_printf_indent("Expanded av_scanner global: %s\n", av_scanner_work);
625 /* disable result caching in this case */
630 /* Do not scan twice (unless av_scanner is dynamic). */
633 /* find the scanner type from the av_scanner option */
634 if (!(scanner_name = string_nextinlist(&av_scanner_work, &sep, NULL, 0)))
635 return malware_panic_defer(US"av_scanner configuration variable is empty");
636 if (!timeout) timeout = MALWARE_TIMEOUT;
637 tmo = time(NULL) + timeout;
639 for (scanent = m_scans; ; scanent++)
642 return malware_panic_defer(string_sprintf("unknown scanner type '%s'",
644 if (strcmpic(scanner_name, US scanent->name) != 0)
646 DEBUG(D_acl) debug_printf_indent("Malware scan: %s tmo=%s\n",
647 scanner_name, readconf_printtime(timeout));
649 if (!(scanner_options = string_nextinlist(&av_scanner_work, &sep, NULL, 0)))
650 scanner_options = scanent->options_default;
651 if (scanent->conn == MC_NONE)
654 DEBUG(D_acl) debug_printf_indent("%15s%10s%s\n", "", "socket: ", scanner_options);
655 switch(scanent->conn)
658 malware_daemon_ctx.sock = ip_tcpsocket(scanner_options, &errstr, 5); break;
660 malware_daemon_ctx.sock = ip_unixsocket(scanner_options, &errstr); break;
662 malware_daemon_ctx.sock = ip_streamsocket(scanner_options, &errstr, 5); break;
664 /* compiler quietening */ break;
666 if (malware_daemon_ctx.sock < 0)
667 return m_panic_defer(scanent, CUS callout_address, errstr);
671 switch (scanent->scancode)
673 #ifndef DISABLE_MAL_FFROTD
674 case M_FPROTD: /* "f-protd" scanner type -------------------------------- */
676 uschar *fp_scan_option;
677 unsigned int detected=0, par_count=0;
678 uschar * scanrequest;
679 uschar buf[32768], *strhelper, *strhelper2;
680 uschar * malware_name_internal = NULL;
683 scanrequest = string_sprintf("GET %s", eml_filename);
685 while ((fp_scan_option = string_nextinlist(&av_scanner_work, &sep,
688 scanrequest = string_sprintf("%s%s%s", scanrequest,
689 par_count ? "%20" : "?", fp_scan_option);
692 scanrequest = string_sprintf("%s HTTP/1.0\r\n\r\n", scanrequest);
693 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s: %s\n",
694 scanner_name, scanrequest);
696 /* send scan request */
697 if (m_sock_send(malware_daemon_ctx.sock, scanrequest, Ustrlen(scanrequest)+1, &errstr) < 0)
698 return m_panic_defer(scanent, CUS callout_address, errstr);
700 while ((len = recv_line(malware_daemon_ctx.sock, buf, sizeof(buf), tmo)) >= 0)
703 if (Ustrstr(buf, US"<detected type=\"") != NULL)
705 else if (detected && (strhelper = Ustrstr(buf, US"<name>")))
707 if ((strhelper2 = Ustrstr(buf, US"</name>")) != NULL)
710 malware_name_internal = string_copy(strhelper+6);
713 else if (Ustrstr(buf, US"<summary code=\""))
715 malware_name = Ustrstr(buf, US"<summary code=\"11\">")
716 ? malware_name_internal : NULL;
722 (void)close(malware_daemon_ctx.sock);
729 #ifndef DISABLE_MAL_FFROT6D
730 case M_FPROT6D: /* "f-prot6d" scanner type ----------------------------------- */
735 uschar * scanrequest;
736 uschar av_buffer[1024];
738 if ((!fprot6d_re_virus && !(fprot6d_re_virus = m_pcre_compile(fprot6d_re_virus_str, &errstr)))
739 || (!fprot6d_re_error && !(fprot6d_re_error = m_pcre_compile(fprot6d_re_error_str, &errstr))))
740 return malware_panic_defer(errstr);
742 scanrequest = string_sprintf("SCAN FILE %s\n", eml_filename);
743 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s: %s\n",
744 scanner_name, scanrequest);
746 if (m_sock_send(malware_daemon_ctx.sock, scanrequest, Ustrlen(scanrequest), &errstr) < 0)
747 return m_panic_defer(scanent, CUS callout_address, errstr);
749 bread = ip_recv(&malware_daemon_ctx, av_buffer, sizeof(av_buffer), tmo);
752 return m_panic_defer_3(scanent, CUS callout_address,
753 string_sprintf("unable to read from socket (%s)", strerror(errno)),
754 malware_daemon_ctx.sock);
756 if (bread == sizeof(av_buffer))
757 return m_panic_defer_3(scanent, CUS callout_address,
758 US"buffer too small", malware_daemon_ctx.sock);
760 av_buffer[bread] = '\0';
761 linebuffer = string_copy(av_buffer);
763 m_sock_send(malware_daemon_ctx.sock, US"QUIT\n", 5, 0);
765 if ((e = m_pcre_exec(fprot6d_re_error, linebuffer)))
766 return m_panic_defer_3(scanent, CUS callout_address,
767 string_sprintf("scanner reported error (%s)", e), malware_daemon_ctx.sock);
769 if (!(malware_name = m_pcre_exec(fprot6d_re_virus, linebuffer)))
776 #ifndef DISABLE_MAL_DRWEB
777 case M_DRWEB: /* "drweb" scanner type ----------------------------------- */
778 /* v0.1 - added support for tcp sockets */
779 /* v0.0 - initial release -- support for unix sockets */
783 unsigned int fsize_uint;
784 uschar * tmpbuf, *drweb_fbuf;
785 int drweb_rc, drweb_cmd, drweb_flags = 0x0000, drweb_fd,
786 drweb_vnum, drweb_slen, drweb_fin = 0x0000;
788 /* prepare variables */
789 drweb_cmd = htonl(DRWEBD_SCAN_CMD);
790 drweb_flags = htonl(DRWEBD_RETURN_VIRUSES | DRWEBD_IS_MAIL);
792 if (*scanner_options != '/')
795 if ((drweb_fd = open(CCS eml_filename, O_RDONLY)) == -1)
796 return m_panic_defer_3(scanent, NULL,
797 string_sprintf("can't open spool file %s: %s",
798 eml_filename, strerror(errno)),
799 malware_daemon_ctx.sock);
801 if ((fsize = lseek(drweb_fd, 0, SEEK_END)) == -1)
804 badseek: err = errno;
805 (void)close(drweb_fd);
806 return m_panic_defer_3(scanent, NULL,
807 string_sprintf("can't seek spool file %s: %s",
808 eml_filename, strerror(err)),
809 malware_daemon_ctx.sock);
811 fsize_uint = (unsigned int) fsize;
812 if ((off_t)fsize_uint != fsize)
814 (void)close(drweb_fd);
815 return m_panic_defer_3(scanent, NULL,
816 string_sprintf("seeking spool file %s, size overflow",
818 malware_daemon_ctx.sock);
820 drweb_slen = htonl(fsize);
821 if (lseek(drweb_fd, 0, SEEK_SET) < 0)
824 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s remote scan [%s]\n",
825 scanner_name, scanner_options);
827 /* send scan request */
828 if ((send(malware_daemon_ctx.sock, &drweb_cmd, sizeof(drweb_cmd), 0) < 0) ||
829 (send(malware_daemon_ctx.sock, &drweb_flags, sizeof(drweb_flags), 0) < 0) ||
830 (send(malware_daemon_ctx.sock, &drweb_fin, sizeof(drweb_fin), 0) < 0) ||
831 (send(malware_daemon_ctx.sock, &drweb_slen, sizeof(drweb_slen), 0) < 0))
833 (void)close(drweb_fd);
834 return m_panic_defer_3(scanent, CUS callout_address, string_sprintf(
835 "unable to send commands to socket (%s)", scanner_options),
836 malware_daemon_ctx.sock);
839 if (!(drweb_fbuf = US malloc(fsize_uint)))
841 (void)close(drweb_fd);
842 return m_panic_defer_3(scanent, NULL,
843 string_sprintf("unable to allocate memory %u for file (%s)",
844 fsize_uint, eml_filename),
845 malware_daemon_ctx.sock);
848 if ((result = read (drweb_fd, drweb_fbuf, fsize)) == -1)
851 (void)close(drweb_fd);
853 return m_panic_defer_3(scanent, NULL,
854 string_sprintf("can't read spool file %s: %s",
855 eml_filename, strerror(err)),
856 malware_daemon_ctx.sock);
858 (void)close(drweb_fd);
860 /* send file body to socket */
861 if (send(malware_daemon_ctx.sock, drweb_fbuf, fsize, 0) < 0)
864 return m_panic_defer_3(scanent, CUS callout_address, string_sprintf(
865 "unable to send file body to socket (%s)", scanner_options),
866 malware_daemon_ctx.sock);
871 drweb_slen = htonl(Ustrlen(eml_filename));
873 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s local scan [%s]\n",
874 scanner_name, scanner_options);
876 /* send scan request */
877 if ((send(malware_daemon_ctx.sock, &drweb_cmd, sizeof(drweb_cmd), 0) < 0) ||
878 (send(malware_daemon_ctx.sock, &drweb_flags, sizeof(drweb_flags), 0) < 0) ||
879 (send(malware_daemon_ctx.sock, &drweb_slen, sizeof(drweb_slen), 0) < 0) ||
880 (send(malware_daemon_ctx.sock, eml_filename, Ustrlen(eml_filename), 0) < 0) ||
881 (send(malware_daemon_ctx.sock, &drweb_fin, sizeof(drweb_fin), 0) < 0))
882 return m_panic_defer_3(scanent, CUS callout_address, string_sprintf(
883 "unable to send commands to socket (%s)", scanner_options),
884 malware_daemon_ctx.sock);
887 /* wait for result */
888 if (!recv_len(malware_daemon_ctx.sock, &drweb_rc, sizeof(drweb_rc), tmo))
889 return m_panic_defer_3(scanent, CUS callout_address,
890 US"unable to read return code", malware_daemon_ctx.sock);
891 drweb_rc = ntohl(drweb_rc);
893 if (!recv_len(malware_daemon_ctx.sock, &drweb_vnum, sizeof(drweb_vnum), tmo))
894 return m_panic_defer_3(scanent, CUS callout_address,
895 US"unable to read the number of viruses", malware_daemon_ctx.sock);
896 drweb_vnum = ntohl(drweb_vnum);
898 /* "virus(es) found" if virus number is > 0 */
903 /* setup default virus name */
904 malware_name = US"unknown";
906 /* set up match regex */
908 drweb_re = m_pcre_compile(drweb_re_str, &errstr);
910 /* read and concatenate virus names into one string */
911 for (int i = 0; i < drweb_vnum; i++)
915 /* read the size of report */
916 if (!recv_len(malware_daemon_ctx.sock, &drweb_slen, sizeof(drweb_slen), tmo))
917 return m_panic_defer_3(scanent, CUS callout_address,
918 US"cannot read report size", malware_daemon_ctx.sock);
919 drweb_slen = ntohl(drweb_slen);
920 tmpbuf = store_get(drweb_slen);
922 /* read report body */
923 if (!recv_len(malware_daemon_ctx.sock, tmpbuf, drweb_slen, tmo))
924 return m_panic_defer_3(scanent, CUS callout_address,
925 US"cannot read report string", malware_daemon_ctx.sock);
926 tmpbuf[drweb_slen] = '\0';
928 /* try matcher on the line, grab substring */
929 result = pcre_exec(drweb_re, NULL, CS tmpbuf, Ustrlen(tmpbuf), 0, 0,
930 ovector, nelem(ovector));
933 const char * pre_malware_nb;
935 pcre_get_substring(CS tmpbuf, ovector, result, 1, &pre_malware_nb);
937 if (i==0) /* the first name we just copy to malware_name */
938 g = string_cat(NULL, US pre_malware_nb);
940 /*XXX could be string_append_listele? */
941 else /* concatenate each new virus name to previous */
942 g = string_append(g, 2, "/", pre_malware_nb);
944 pcre_free_substring(pre_malware_nb);
947 malware_name = string_from_gstring(g);
951 const char *drweb_s = NULL;
953 if (drweb_rc & DERR_READ_ERR) drweb_s = "read error";
954 if (drweb_rc & DERR_NOMEMORY) drweb_s = "no memory";
955 if (drweb_rc & DERR_TIMEOUT) drweb_s = "timeout";
956 if (drweb_rc & DERR_BAD_CALL) drweb_s = "wrong command";
957 /* retcodes DERR_SYMLINK, DERR_NO_REGFILE, DERR_SKIPPED.
958 * DERR_TOO_BIG, DERR_TOO_COMPRESSED, DERR_SPAM,
959 * DERR_CRC_ERROR, DERR_READSOCKET, DERR_WRITE_ERR
960 * and others are ignored */
962 return m_panic_defer_3(scanent, CUS callout_address,
963 string_sprintf("drweb daemon retcode 0x%x (%s)", drweb_rc, drweb_s),
964 malware_daemon_ctx.sock);
973 #ifndef DISABLE_MAL_AVE
974 case M_AVES: /* "aveserver" scanner type -------------------------------- */
979 /* read aveserver's greeting and see if it is ready (2xx greeting) */
981 recv_line(malware_daemon_ctx.sock, buf, sizeof(buf), tmo);
983 if (buf[0] != '2') /* aveserver is having problems */
984 return m_panic_defer_3(scanent, CUS callout_address,
985 string_sprintf("unavailable (Responded: %s).",
986 ((buf[0] != 0) ? buf : US "nothing") ),
987 malware_daemon_ctx.sock);
989 /* prepare our command */
990 (void)string_format(buf, sizeof(buf), "SCAN bPQRSTUW %s\r\n",
994 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s %s\n",
996 if (m_sock_send(malware_daemon_ctx.sock, buf, Ustrlen(buf), &errstr) < 0)
997 return m_panic_defer(scanent, CUS callout_address, errstr);
1001 /* read response lines, find malware name and final response */
1002 while (recv_line(malware_daemon_ctx.sock, buf, sizeof(buf), tmo) > 0)
1006 if (buf[0] == '5') /* aveserver is having problems */
1008 result = m_panic_defer(scanent, CUS callout_address,
1009 string_sprintf("unable to scan file %s (Responded: %s).",
1010 eml_filename, buf));
1013 if (Ustrncmp(buf,"322",3) == 0)
1015 uschar *p = Ustrchr(&buf[4], ' ');
1017 malware_name = string_copy(&buf[4]);
1021 if (m_sock_send(malware_daemon_ctx.sock, US"quit\r\n", 6, &errstr) < 0)
1022 return m_panic_defer(scanent, CUS callout_address, errstr);
1024 /* read aveserver's greeting and see if it is ready (2xx greeting) */
1026 recv_line(malware_daemon_ctx.sock, buf, sizeof(buf), tmo);
1028 if (buf[0] != '2') /* aveserver is having problems */
1029 return m_panic_defer_3(scanent, CUS callout_address,
1030 string_sprintf("unable to quit dialogue (Responded: %s).",
1031 ((buf[0] != 0) ? buf : US "nothing") ),
1032 malware_daemon_ctx.sock);
1034 if (result == DEFER)
1036 (void)close(malware_daemon_ctx.sock);
1043 #ifndef DISABLE_MAL_FSECURE
1044 case M_FSEC: /* "fsecure" scanner type ---------------------------------- */
1048 uschar av_buffer[1024];
1049 static uschar *cmdopt[] = { US"CONFIGURE\tARCHIVE\t1\n",
1050 US"CONFIGURE\tTIMEOUT\t0\n",
1051 US"CONFIGURE\tMAXARCH\t5\n",
1052 US"CONFIGURE\tMIME\t1\n" };
1054 malware_name = NULL;
1056 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s scan [%s]\n",
1057 scanner_name, scanner_options);
1059 memset(av_buffer, 0, sizeof(av_buffer));
1060 for (i = 0; i != nelem(cmdopt); i++)
1063 if (m_sock_send(malware_daemon_ctx.sock, cmdopt[i], Ustrlen(cmdopt[i]), &errstr) < 0)
1064 return m_panic_defer(scanent, CUS callout_address, errstr);
1066 bread = ip_recv(&malware_daemon_ctx, av_buffer, sizeof(av_buffer), tmo);
1067 if (bread > 0) av_buffer[bread]='\0';
1069 return m_panic_defer_3(scanent, CUS callout_address,
1070 string_sprintf("unable to read answer %d (%s)", i, strerror(errno)),
1071 malware_daemon_ctx.sock);
1072 for (int j = 0; j < bread; j++)
1073 if (av_buffer[j] == '\r' || av_buffer[j] == '\n')
1077 /* pass the mailfile to fsecure */
1078 file_name = string_sprintf("SCAN\t%s\n", eml_filename);
1080 if (m_sock_send(malware_daemon_ctx.sock, file_name, Ustrlen(file_name), &errstr) < 0)
1081 return m_panic_defer(scanent, CUS callout_address, errstr);
1084 /* todo also SUSPICION\t */
1086 fsec_re = m_pcre_compile(fsec_re_str, &errstr);
1088 /* read report, linewise. Apply a timeout as the Fsecure daemon
1089 sometimes wants an answer to "PING" but they won't tell us what */
1091 uschar * p = av_buffer;
1097 i = av_buffer+sizeof(av_buffer)-p;
1098 if ((bread= ip_recv(&malware_daemon_ctx, p, i-1, tmo)) < 0)
1099 return m_panic_defer_3(scanent, CUS callout_address,
1100 string_sprintf("unable to read result (%s)", strerror(errno)),
1101 malware_daemon_ctx.sock);
1103 for (p[bread] = '\0'; (q = Ustrchr(p, '\n')); p = q+1)
1107 /* Really search for virus again? */
1109 /* try matcher on the line, grab substring */
1110 malware_name = m_pcre_exec(fsec_re, p);
1112 if (Ustrstr(p, "OK\tScan ok."))
1116 /* copy down the trailing partial line then read another chunk */
1117 i = av_buffer+sizeof(av_buffer)-p;
1118 memmove(av_buffer, p, i);
1128 #ifndef DISABLE_MAL_KAV
1129 case M_KAVD: /* "kavdaemon" scanner type -------------------------------- */
1132 uschar tmpbuf[1024];
1133 uschar * scanrequest;
1135 unsigned long kav_reportlen;
1140 /* get current date and time, build scan request */
1142 /* pdp note: before the eml_filename parameter, this scanned the
1143 directory; not finding documentation, so we'll strip off the directory.
1144 The side-effect is that the test framework scanning may end up in
1145 scanning more than was requested, but for the normal interface, this is
1148 strftime(CS tmpbuf, sizeof(tmpbuf), "%d %b %H:%M:%S", localtime(&t));
1149 scanrequest = string_sprintf("<0>%s:%s", CS tmpbuf, eml_filename);
1150 p = Ustrrchr(scanrequest, '/');
1154 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s scan [%s]\n",
1155 scanner_name, scanner_options);
1157 /* send scan request */
1158 if (m_sock_send(malware_daemon_ctx.sock, scanrequest, Ustrlen(scanrequest)+1, &errstr) < 0)
1159 return m_panic_defer(scanent, CUS callout_address, errstr);
1161 /* wait for result */
1162 if (!recv_len(malware_daemon_ctx.sock, tmpbuf, 2, tmo))
1163 return m_panic_defer_3(scanent, CUS callout_address,
1164 US"unable to read 2 bytes from socket.", malware_daemon_ctx.sock);
1166 /* get errorcode from one nibble */
1167 kav_rc = tmpbuf[ test_byte_order()==LITTLE_MY_ENDIAN ? 0 : 1 ] & 0x0F;
1170 case 5: case 6: /* improper kavdaemon configuration */
1171 return m_panic_defer_3(scanent, CUS callout_address,
1172 US"please reconfigure kavdaemon to NOT disinfect or remove infected files.",
1173 malware_daemon_ctx.sock);
1175 return m_panic_defer_3(scanent, CUS callout_address,
1176 US"reported 'scanning not completed' (code 1).", malware_daemon_ctx.sock);
1178 return m_panic_defer_3(scanent, CUS callout_address,
1179 US"reported 'kavdaemon damaged' (code 7).", malware_daemon_ctx.sock);
1182 /* code 8 is not handled, since it is ambiguous. It appears mostly on
1183 bounces where part of a file has been cut off */
1185 /* "virus found" return codes (2-4) */
1186 if (kav_rc > 1 && kav_rc < 5)
1188 int report_flag = 0;
1190 /* setup default virus name */
1191 malware_name = US"unknown";
1193 report_flag = tmpbuf[ test_byte_order() == LITTLE_MY_ENDIAN ? 1 : 0 ];
1195 /* read the report, if available */
1196 if (report_flag == 1)
1198 /* read report size */
1199 if (!recv_len(malware_daemon_ctx.sock, &kav_reportlen, 4, tmo))
1200 return m_panic_defer_3(scanent, CUS callout_address,
1201 US"cannot read report size", malware_daemon_ctx.sock);
1203 /* it's possible that avp returns av_buffer[1] == 1 but the
1204 reportsize is 0 (!?) */
1205 if (kav_reportlen > 0)
1207 /* set up match regex, depends on retcode */
1210 if (!kav_re_sus) kav_re_sus = m_pcre_compile(kav_re_sus_str, &errstr);
1211 kav_re = kav_re_sus;
1215 if (!kav_re_inf) kav_re_inf = m_pcre_compile(kav_re_inf_str, &errstr);
1216 kav_re = kav_re_inf;
1219 /* read report, linewise. Using size from stream to read amount of data
1220 from same stream is safe enough. */
1221 /* coverity[tainted_data] */
1222 while (kav_reportlen > 0)
1224 if ((bread = recv_line(malware_daemon_ctx.sock, tmpbuf, sizeof(tmpbuf), tmo)) < 0)
1226 kav_reportlen -= bread+1;
1228 /* try matcher on the line, grab substring */
1229 if ((malware_name = m_pcre_exec(kav_re, tmpbuf)))
1235 else /* no virus found */
1236 malware_name = NULL;
1242 #ifndef DISABLE_MAL_CMDLINE
1243 case M_CMDL: /* "cmdline" scanner type ---------------------------------- */
1245 const uschar *cmdline_scanner = scanner_options;
1246 const pcre *cmdline_trigger_re;
1247 const pcre *cmdline_regex_re;
1249 uschar * commandline;
1250 void (*eximsigchld)(int);
1251 void (*eximsigpipe)(int);
1252 FILE *scanner_out = NULL;
1254 FILE *scanner_record = NULL;
1255 uschar linebuffer[32767];
1260 if (!cmdline_scanner)
1261 return m_panic_defer(scanent, NULL, errstr);
1263 /* find scanner output trigger */
1264 cmdline_trigger_re = m_pcre_nextinlist(&av_scanner_work, &sep,
1265 "missing trigger specification", &errstr);
1266 if (!cmdline_trigger_re)
1267 return m_panic_defer(scanent, NULL, errstr);
1269 /* find scanner name regex */
1270 cmdline_regex_re = m_pcre_nextinlist(&av_scanner_work, &sep,
1271 "missing virus name regex specification", &errstr);
1272 if (!cmdline_regex_re)
1273 return m_panic_defer(scanent, NULL, errstr);
1275 /* prepare scanner call; despite the naming, file_name holds a directory
1276 name which is documented as the value given to %s. */
1278 file_name = string_copy(eml_filename);
1279 p = Ustrrchr(file_name, '/');
1282 commandline = string_sprintf(CS cmdline_scanner, file_name);
1284 /* redirect STDERR too */
1285 commandline = string_sprintf("%s 2>&1", commandline);
1287 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s scan [%s]\n",
1288 scanner_name, commandline);
1290 /* store exims signal handlers */
1291 eximsigchld = signal(SIGCHLD,SIG_DFL);
1292 eximsigpipe = signal(SIGPIPE,SIG_DFL);
1294 if (!(scanner_out = popen(CS commandline,"r")))
1297 signal(SIGCHLD,eximsigchld); signal(SIGPIPE,eximsigpipe);
1298 return m_panic_defer(scanent, NULL,
1299 string_sprintf("call (%s) failed: %s.", commandline, strerror(err)));
1301 scanner_fd = fileno(scanner_out);
1303 file_name = string_sprintf("%s/%s_scanner_output", eml_dir, message_id);
1305 if (!(scanner_record = modefopen(file_name, "wb", SPOOL_MODE)))
1308 (void) pclose(scanner_out);
1309 signal(SIGCHLD,eximsigchld); signal(SIGPIPE,eximsigpipe);
1310 return m_panic_defer(scanent, NULL, string_sprintf(
1311 "opening scanner output file (%s) failed: %s.",
1312 file_name, strerror(err)));
1315 /* look for trigger while recording output */
1316 while ((rcnt = recv_line(scanner_fd, linebuffer,
1317 sizeof(linebuffer), tmo)))
1324 (void) pclose(scanner_out);
1325 signal(SIGCHLD,eximsigchld); signal(SIGPIPE,eximsigpipe);
1326 return m_panic_defer(scanent, NULL, string_sprintf(
1327 "unable to read from scanner (%s): %s",
1328 commandline, strerror(err)));
1331 if (Ustrlen(linebuffer) > fwrite(linebuffer, 1, Ustrlen(linebuffer), scanner_record))
1334 (void) pclose(scanner_out);
1335 signal(SIGCHLD,eximsigchld); signal(SIGPIPE,eximsigpipe);
1336 return m_panic_defer(scanent, NULL, string_sprintf(
1337 "short write on scanner output file (%s).", file_name));
1339 putc('\n', scanner_record);
1340 /* try trigger match */
1342 && regex_match_and_setup(cmdline_trigger_re, linebuffer, 0, -1)
1347 (void)fclose(scanner_record);
1348 sep = pclose(scanner_out);
1349 signal(SIGCHLD,eximsigchld); signal(SIGPIPE,eximsigpipe);
1351 return m_panic_defer(scanent, NULL,
1353 ? string_sprintf("running scanner failed: %s", strerror(sep))
1354 : string_sprintf("scanner returned error code: %d", sep));
1359 /* setup default virus name */
1360 malware_name = US"unknown";
1362 /* re-open the scanner output file, look for name match */
1363 scanner_record = fopen(CS file_name, "rb");
1364 while (fgets(CS linebuffer, sizeof(linebuffer), scanner_record))
1367 if ((s = m_pcre_exec(cmdline_regex_re, linebuffer)))
1370 (void)fclose(scanner_record);
1372 else /* no virus found */
1373 malware_name = NULL;
1378 #ifndef DISABLE_MAL_SOPHIE
1379 case M_SOPHIE: /* "sophie" scanner type --------------------------------- */
1384 uschar av_buffer[1024];
1386 /* pass the scan directory to sophie */
1387 file_name = string_copy(eml_filename);
1388 if ((p = Ustrrchr(file_name, '/')))
1391 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s scan [%s]\n",
1392 scanner_name, scanner_options);
1394 if ( write(malware_daemon_ctx.sock, file_name, Ustrlen(file_name)) < 0
1395 || write(malware_daemon_ctx.sock, "\n", 1) != 1
1397 return m_panic_defer_3(scanent, CUS callout_address,
1398 string_sprintf("unable to write to UNIX socket (%s)", scanner_options),
1399 malware_daemon_ctx.sock);
1401 /* wait for result */
1402 memset(av_buffer, 0, sizeof(av_buffer));
1403 if ((bread = ip_recv(&malware_daemon_ctx, av_buffer, sizeof(av_buffer), tmo)) <= 0)
1404 return m_panic_defer_3(scanent, CUS callout_address,
1405 string_sprintf("unable to read from UNIX socket (%s)", scanner_options),
1406 malware_daemon_ctx.sock);
1409 if (av_buffer[0] == '1') {
1410 uschar * s = Ustrchr(av_buffer, '\n');
1413 malware_name = string_copy(&av_buffer[2]);
1415 else if (!strncmp(CS av_buffer, "-1", 2))
1416 return m_panic_defer_3(scanent, CUS callout_address,
1417 US"scanner reported error", malware_daemon_ctx.sock);
1418 else /* all ok, no virus */
1419 malware_name = NULL;
1425 #ifndef DISABLE_MAL_CLAM
1426 case M_CLAMD: /* "clamd" scanner type ----------------------------------- */
1428 /* This code was originally contributed by David Saez */
1429 /* There are three scanning methods available to us:
1430 * (1) Use the SCAN command, pointing to a file in the filesystem
1431 * (2) Use the STREAM command, send the data on a separate port
1432 * (3) Use the zINSTREAM command, send the data inline
1433 * The zINSTREAM command was introduced with ClamAV 0.95, which marked
1434 * STREAM deprecated; see: http://wiki.clamav.net/bin/view/Main/UpgradeNotes095
1435 * In Exim, we use SCAN if using a Unix-domain socket or explicitly told that
1436 * the TCP-connected daemon is actually local; otherwise we use zINSTREAM
1437 * See Exim bug 926 for details. */
1439 uschar *p, *vname, *result_tag;
1441 uschar av_buffer[1024];
1442 uschar *hostname = US"";
1444 uschar *clamav_fbuf;
1445 int clam_fd, result;
1447 unsigned int fsize_uint;
1448 BOOL use_scan_command = FALSE;
1449 clamd_address * cv[MAX_CLAMD_SERVERS];
1450 int num_servers = 0;
1451 uint32_t send_size, send_final_zeroblock;
1454 /*XXX if unixdomain socket, only one server supported. Needs fixing;
1455 there's no reason we should not mix local and remote servers */
1457 if (*scanner_options == '/')
1460 const uschar * sublist;
1463 /* Local file; so we def want to use_scan_command and don't want to try
1464 * passing IP/port combinations */
1465 use_scan_command = TRUE;
1466 cd = (clamd_address *) store_get(sizeof(clamd_address));
1468 /* extract socket-path part */
1469 sublist = scanner_options;
1470 cd->hostspec = string_nextinlist(&sublist, &subsep, NULL, 0);
1473 if (clamd_option(cd, sublist, &subsep) != OK)
1474 return m_panic_defer(scanent, NULL,
1475 string_sprintf("bad option '%s'", scanner_options));
1480 /* Go through the rest of the list of host/port and construct an array
1481 * of servers to try. The first one is the bit we just passed from
1482 * scanner_options so process that first and then scan the remainder of
1483 * the address buffer */
1487 const uschar * sublist;
1491 /* The 'local' option means use the SCAN command over the network
1492 * socket (ie common file storage in use) */
1493 /*XXX we could accept this also as a local option? */
1494 if (strcmpic(scanner_options, US"local") == 0)
1496 use_scan_command = TRUE;
1500 cd = (clamd_address *) store_get(sizeof(clamd_address));
1502 /* extract host and port part */
1503 sublist = scanner_options;
1504 if (!(cd->hostspec = string_nextinlist(&sublist, &subsep, NULL, 0)))
1506 (void) m_panic_defer(scanent, NULL,
1507 string_sprintf("missing address: '%s'", scanner_options));
1510 if (!(s = string_nextinlist(&sublist, &subsep, NULL, 0)))
1512 (void) m_panic_defer(scanent, NULL,
1513 string_sprintf("missing port: '%s'", scanner_options));
1516 cd->tcp_port = atoi(CS s);
1519 /*XXX should these options be common over scanner types? */
1520 if (clamd_option(cd, sublist, &subsep) != OK)
1521 return m_panic_defer(scanent, NULL,
1522 string_sprintf("bad option '%s'", scanner_options));
1524 cv[num_servers++] = cd;
1525 if (num_servers >= MAX_CLAMD_SERVERS)
1527 (void) m_panic_defer(scanent, NULL,
1528 US"More than " MAX_CLAMD_SERVERS_S " clamd servers "
1529 "specified; only using the first " MAX_CLAMD_SERVERS_S );
1532 } while ((scanner_options = string_nextinlist(&av_scanner_work, &sep,
1535 /* check if we have at least one server */
1537 return m_panic_defer(scanent, NULL,
1538 US"no useable server addresses in malware configuration option.");
1541 /* See the discussion of response formats below to see why we really
1542 don't like colons in filenames when passing filenames to ClamAV. */
1543 if (use_scan_command && Ustrchr(eml_filename, ':'))
1544 return m_panic_defer(scanent, NULL,
1545 string_sprintf("local/SCAN mode incompatible with" \
1546 " : in path to email filename [%s]", eml_filename));
1548 /* Set up the very first data we will be sending */
1549 if (!use_scan_command)
1550 { cmd_str.data = US"zINSTREAM"; cmd_str.len = 10; }
1553 cmd_str.data = string_sprintf("SCAN %s\n", eml_filename);
1554 cmd_str.len = Ustrlen(cmd_str.data);
1557 /* We have some network servers specified */
1560 /* Confirmed in ClamAV source (0.95.3) that the TCPAddr option of clamd
1561 * only supports AF_INET, but we should probably be looking to the
1562 * future and rewriting this to be protocol-independent anyway. */
1564 while (num_servers > 0)
1566 int i = random_number(num_servers);
1567 clamd_address * cd = cv[i];
1569 DEBUG(D_acl) debug_printf_indent("trying server name %s, port %u\n",
1570 cd->hostspec, cd->tcp_port);
1572 /* Lookup the host. This is to ensure that we connect to the same IP
1573 * on both connections (as one host could resolve to multiple ips) */
1576 /*XXX we trust that the cmd_str is ideempotent */
1577 if ((malware_daemon_ctx.sock = m_tcpsocket(cd->hostspec, cd->tcp_port,
1578 &connhost, &errstr, &cmd_str)) >= 0)
1580 /* Connection successfully established with a server */
1581 hostname = cd->hostspec;
1585 if (cd->retry <= 0) break;
1586 while (cd->retry > 0) cd->retry = sleep(cd->retry);
1588 if (malware_daemon_ctx.sock >= 0)
1591 (void) m_panic_defer(scanent, CUS callout_address, errstr);
1593 /* Remove the server from the list. XXX We should free the memory */
1595 for (; i < num_servers; i++)
1599 if (num_servers == 0)
1600 return m_panic_defer(scanent, NULL, US"all servers failed");
1605 if ((malware_daemon_ctx.sock = ip_unixsocket(cv[0]->hostspec, &errstr)) >= 0)
1607 hostname = cv[0]->hostspec;
1610 if (cv[0]->retry <= 0)
1611 return m_panic_defer(scanent, CUS callout_address, errstr);
1612 while (cv[0]->retry > 0) cv[0]->retry = sleep(cv[0]->retry);
1615 /* have socket in variable "sock"; command to use is semi-independent of
1616 * the socket protocol. We use SCAN if is local (either Unix/local
1617 * domain socket, or explicitly told local) else we stream the data.
1618 * How we stream the data depends upon how we were built. */
1620 if (!use_scan_command)
1622 /* New protocol: "zINSTREAM\n" followed by a sequence of <length><data>
1623 chunks, <n> a 4-byte number (network order), terminated by a zero-length
1626 DEBUG(D_acl) debug_printf_indent(
1627 "Malware scan: issuing %s new-style remote scan (zINSTREAM)\n",
1630 /* Pass the string to ClamAV (10 = "zINSTREAM\0"), if not already sent */
1632 if (send(malware_daemon_ctx.sock, cmd_str.data, cmd_str.len, 0) < 0)
1633 return m_panic_defer_3(scanent, CUS hostname,
1634 string_sprintf("unable to send zINSTREAM to socket (%s)",
1636 malware_daemon_ctx.sock);
1638 /* calc file size */
1639 if ((clam_fd = open(CS eml_filename, O_RDONLY)) < 0)
1642 return m_panic_defer_3(scanent, NULL,
1643 string_sprintf("can't open spool file %s: %s",
1644 eml_filename, strerror(err)),
1645 malware_daemon_ctx.sock);
1647 if ((fsize = lseek(clam_fd, 0, SEEK_END)) < 0)
1650 b_seek: err = errno;
1651 (void)close(clam_fd);
1652 return m_panic_defer_3(scanent, NULL,
1653 string_sprintf("can't seek spool file %s: %s",
1654 eml_filename, strerror(err)),
1655 malware_daemon_ctx.sock);
1657 fsize_uint = (unsigned int) fsize;
1658 if ((off_t)fsize_uint != fsize)
1660 (void)close(clam_fd);
1661 return m_panic_defer_3(scanent, NULL,
1662 string_sprintf("seeking spool file %s, size overflow",
1664 malware_daemon_ctx.sock);
1666 if (lseek(clam_fd, 0, SEEK_SET) < 0)
1669 if (!(clamav_fbuf = US malloc(fsize_uint)))
1671 (void)close(clam_fd);
1672 return m_panic_defer_3(scanent, NULL,
1673 string_sprintf("unable to allocate memory %u for file (%s)",
1674 fsize_uint, eml_filename),
1675 malware_daemon_ctx.sock);
1678 if ((result = read(clam_fd, clamav_fbuf, fsize_uint)) < 0)
1681 free(clamav_fbuf); (void)close(clam_fd);
1682 return m_panic_defer_3(scanent, NULL,
1683 string_sprintf("can't read spool file %s: %s",
1684 eml_filename, strerror(err)),
1685 malware_daemon_ctx.sock);
1687 (void)close(clam_fd);
1689 /* send file body to socket */
1690 send_size = htonl(fsize_uint);
1691 send_final_zeroblock = 0;
1692 if ((send(malware_daemon_ctx.sock, &send_size, sizeof(send_size), 0) < 0) ||
1693 (send(malware_daemon_ctx.sock, clamav_fbuf, fsize_uint, 0) < 0) ||
1694 (send(malware_daemon_ctx.sock, &send_final_zeroblock, sizeof(send_final_zeroblock), 0) < 0))
1697 return m_panic_defer_3(scanent, NULL,
1698 string_sprintf("unable to send file body to socket (%s)", hostname),
1699 malware_daemon_ctx.sock);
1705 { /* use scan command */
1706 /* Send a SCAN command pointing to a filename; then in the then in the
1707 * scan-method-neutral part, read the response back */
1709 /* ================================================================= */
1711 /* Prior to the reworking post-Exim-4.72, this scanned a directory,
1712 which dates to when ClamAV needed us to break apart the email into the
1713 MIME parts (eg, with the now deprecated demime condition coming first).
1714 Some time back, ClamAV gained the ability to deconstruct the emails, so
1715 doing this would actually have resulted in the mail attachments being
1716 scanned twice, in the broken out files and from the original .eml.
1717 Since ClamAV now handles emails (and has for quite some time) we can
1718 just use the email file itself. */
1719 /* Pass the string to ClamAV (7 = "SCAN \n" + \0), if not already sent */
1721 DEBUG(D_acl) debug_printf_indent(
1722 "Malware scan: issuing %s local-path scan [%s]\n",
1723 scanner_name, scanner_options);
1726 if (send(malware_daemon_ctx.sock, cmd_str.data, cmd_str.len, 0) < 0)
1727 return m_panic_defer_3(scanent, CUS callout_address,
1728 string_sprintf("unable to write to socket (%s)", strerror(errno)),
1729 malware_daemon_ctx.sock);
1731 /* Do not shut down the socket for writing; a user report noted that
1732 * clamd 0.70 does not react well to this. */
1734 /* Commands have been sent, no matter which scan method or connection
1735 * type we're using; now just read the result, independent of method. */
1737 /* Read the result */
1738 memset(av_buffer, 0, sizeof(av_buffer));
1739 bread = ip_recv(&malware_daemon_ctx, av_buffer, sizeof(av_buffer), tmo);
1740 (void)close(malware_daemon_ctx.sock);
1741 malware_daemon_ctx.sock = -1;
1742 malware_daemon_ctx.tls_ctx = NULL;
1745 return m_panic_defer(scanent, CUS callout_address,
1746 string_sprintf("unable to read from socket (%s)",
1747 errno == 0 ? "EOF" : strerror(errno)));
1749 if (bread == sizeof(av_buffer))
1750 return m_panic_defer(scanent, CUS callout_address,
1751 US"buffer too small");
1752 /* We're now assured of a NULL at the end of av_buffer */
1754 /* Check the result. ClamAV returns one of two result formats.
1755 In the basic mode, the response is of the form:
1756 infected: -> "<filename>: <virusname> FOUND"
1757 not-infected: -> "<filename>: OK"
1758 error: -> "<filename>: <errcode> ERROR
1759 If the ExtendedDetectionInfo option has been turned on, then we get:
1760 "<filename>: <virusname>(<virushash>:<virussize>) FOUND"
1761 for the infected case. Compare:
1762 /tmp/eicar.com: Eicar-Test-Signature FOUND
1763 /tmp/eicar.com: Eicar-Test-Signature(44d88612fea8a8f36de82e1278abb02f:68) FOUND
1765 In the streaming case, clamd uses the filename "stream" which you should
1766 be able to verify with { ktrace clamdscan --stream /tmp/eicar.com }. (The
1767 client app will replace "stream" with the original filename before returning
1768 results to stdout, but the trace shows the data).
1770 We will assume that the pathname passed to clamd from Exim does not contain
1771 a colon. We will have whined loudly above if the eml_filename does (and we're
1772 passing a filename to clamd). */
1775 return m_panic_defer(scanent, CUS callout_address,
1776 US"ClamAV returned null");
1778 /* strip newline at the end (won't be present for zINSTREAM)
1779 (also any trailing whitespace, which shouldn't exist, but we depend upon
1780 this below, so double-check) */
1781 p = av_buffer + Ustrlen(av_buffer) - 1;
1782 if (*p == '\n') *p = '\0';
1784 DEBUG(D_acl) debug_printf_indent("Malware response: %s\n", av_buffer);
1786 while (isspace(*--p) && (p > av_buffer))
1790 /* colon in returned output? */
1791 if(!(p = Ustrchr(av_buffer,':')))
1792 return m_panic_defer(scanent, CUS callout_address, string_sprintf(
1793 "ClamAV returned malformed result (missing colon): %s",
1796 /* strip filename */
1797 while (*p && isspace(*++p)) /**/;
1800 /* It would be bad to encounter a virus with "FOUND" in part of the name,
1801 but we should at least be resistant to it. */
1802 p = Ustrrchr(vname, ' ');
1803 result_tag = p ? p+1 : vname;
1805 if (Ustrcmp(result_tag, "FOUND") == 0)
1807 /* p should still be the whitespace before the result_tag */
1808 while (isspace(*p)) --p;
1810 /* Strip off the extended information too, which will be in parens
1811 after the virus name, with no intervening whitespace. */
1814 /* "(hash:size)", so previous '(' will do; if not found, we have
1815 a curious virus name, but not an error. */
1816 p = Ustrrchr(vname, '(');
1820 malware_name = string_copy(vname);
1821 DEBUG(D_acl) debug_printf_indent("Malware found, name \"%s\"\n", malware_name);
1824 else if (Ustrcmp(result_tag, "ERROR") == 0)
1825 return m_panic_defer(scanent, CUS callout_address,
1826 string_sprintf("ClamAV returned: %s", av_buffer));
1828 else if (Ustrcmp(result_tag, "OK") == 0)
1830 /* Everything should be OK */
1831 malware_name = NULL;
1832 DEBUG(D_acl) debug_printf_indent("Malware not found\n");
1836 return m_panic_defer(scanent, CUS callout_address,
1837 string_sprintf("unparseable response from ClamAV: {%s}", av_buffer));
1843 #ifndef DISABLE_MAL_SOCK
1844 case M_SOCK: /* "sock" scanner type ------------------------------------- */
1845 /* This code was derived by Martin Poole from the clamd code contributed
1846 by David Saez and the cmdline code
1850 uschar * commandline;
1851 uschar av_buffer[1024];
1852 uschar * linebuffer;
1853 uschar * sockline_scanner;
1854 uschar sockline_scanner_default[] = "%s\n";
1855 const pcre *sockline_trig_re;
1856 const pcre *sockline_name_re;
1858 /* find scanner command line */
1859 if ( (sockline_scanner = string_nextinlist(&av_scanner_work, &sep,
1861 && *sockline_scanner
1863 { /* check for no expansions apart from one %s */
1864 uschar * s = Ustrchr(sockline_scanner, '%');
1866 if ((*s != 's' && *s != '%') || Ustrchr(s+1, '%'))
1867 return m_panic_defer_3(scanent, NULL,
1868 US"unsafe sock scanner call spec", malware_daemon_ctx.sock);
1871 sockline_scanner = sockline_scanner_default;
1872 DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "cmdline: ",
1873 string_printing(sockline_scanner));
1875 /* find scanner output trigger */
1876 sockline_trig_re = m_pcre_nextinlist(&av_scanner_work, &sep,
1877 "missing trigger specification", &errstr);
1878 if (!sockline_trig_re)
1879 return m_panic_defer_3(scanent, NULL, errstr, malware_daemon_ctx.sock);
1881 /* find virus name regex */
1882 sockline_name_re = m_pcre_nextinlist(&av_scanner_work, &sep,
1883 "missing virus name regex specification", &errstr);
1884 if (!sockline_name_re)
1885 return m_panic_defer_3(scanent, NULL, errstr, malware_daemon_ctx.sock);
1887 /* prepare scanner call - security depends on expansions check above */
1888 commandline = string_sprintf( CS sockline_scanner, CS eml_filename);
1889 DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "expanded: ",
1890 string_printing(commandline));
1892 /* Pass the command string to the socket */
1893 if (m_sock_send(malware_daemon_ctx.sock, commandline, Ustrlen(commandline), &errstr) < 0)
1894 return m_panic_defer(scanent, CUS callout_address, errstr);
1896 /* Read the result */
1897 bread = ip_recv(&malware_daemon_ctx, av_buffer, sizeof(av_buffer), tmo);
1900 return m_panic_defer_3(scanent, CUS callout_address,
1901 string_sprintf("unable to read from socket (%s)", strerror(errno)),
1902 malware_daemon_ctx.sock);
1904 if (bread == sizeof(av_buffer))
1905 return m_panic_defer_3(scanent, CUS callout_address,
1906 US"buffer too small", malware_daemon_ctx.sock);
1907 av_buffer[bread] = '\0';
1908 linebuffer = string_copy(av_buffer);
1909 DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "answer: ",
1910 string_printing(linebuffer));
1912 /* try trigger match */
1913 if (regex_match_and_setup(sockline_trig_re, linebuffer, 0, -1))
1915 if (!(malware_name = m_pcre_exec(sockline_name_re, av_buffer)))
1916 malware_name = US "unknown";
1917 DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "name: ",
1918 string_printing(malware_name));
1920 else /* no virus found */
1921 malware_name = NULL;
1926 #ifndef DISABLE_MAL_MKS
1927 case M_MKSD: /* "mksd" scanner type ------------------------------------- */
1929 char *mksd_options_end;
1930 int mksd_maxproc = 1; /* default, if no option supplied */
1933 if (scanner_options)
1935 mksd_maxproc = (int)strtol(CS scanner_options, &mksd_options_end, 10);
1936 if ( *scanner_options == '\0'
1937 || *mksd_options_end != '\0'
1939 || mksd_maxproc > 32
1941 return m_panic_defer(scanent, CUS callout_address,
1942 string_sprintf("invalid option '%s'", scanner_options));
1945 if((malware_daemon_ctx.sock = ip_unixsocket(US "/var/run/mksd/socket", &errstr)) < 0)
1946 return m_panic_defer(scanent, CUS callout_address, errstr);
1948 malware_name = NULL;
1950 DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s scan\n", scanner_name);
1952 if ((retval = mksd_scan_packed(scanent, malware_daemon_ctx.sock, eml_filename, tmo)) != OK)
1954 close (malware_daemon_ctx.sock);
1961 #ifndef DISABLE_MAL_AVAST
1962 case M_AVAST: /* "avast" scanner type ----------------------------------- */
1965 uschar * scanrequest;
1966 enum {AVA_HELO, AVA_OPT, AVA_RSP, AVA_DONE} avast_stage;
1968 uschar * error_message = NULL;
1969 BOOL more_data = FALSE;
1972 /* According to Martin Tuma @avast the protocol uses "escaped
1973 whitespace", that is, every embedded whitespace is backslash
1974 escaped, as well as backslash is protected by backslash.
1975 The returned lines contain the name of the scanned file, a tab
1979 [E] - some error occurred
1980 Such marker follows the first non-escaped TAB. For more information
1981 see avast-protocol(5)
1983 We observed two cases:
1985 <- /file [E]0.0 Error 13 Permission denied
1986 <- 451 SCAN Engine error 13 permission denied
1989 <- /file… [E]3.0 Error 41120 The file is a decompression bomb
1991 <- /file… [+]2.0 0 Eicar Test Virus!!!
1994 If the scanner returns 4xx, DEFER is a good decision, combined
1995 with a panic log entry, to get the admin's attention.
1997 If the scanner returns 200, we reject it as malware, if found any,
1998 or, in case of an error, we set the malware message to the error
2001 Some of the >= 42000 errors are message related - usually some
2002 broken archives etc, but some of them are e.g. license related.
2003 Once the license expires the engine starts returning errors for
2004 every scanning attempt. I¹ have the full list of the error codes
2005 but it is not a public API and is subject to change. It is hard
2006 for me to say what you should do in case of an engine error. You
2007 can have a “Treat * unscanned file as infection” policy or “Treat
2008 unscanned file as clean” policy. ¹) Jakub Bednar
2012 if ( ( !ava_re_clean
2013 && !(ava_re_clean = m_pcre_compile(ava_re_clean_str, &errstr)))
2015 && !(ava_re_virus = m_pcre_compile(ava_re_virus_str, &errstr)))
2017 && !(ava_re_error = m_pcre_compile(ava_re_error_str, &errstr)))
2019 return malware_panic_defer(errstr);
2021 /* wait for result */
2022 for (avast_stage = AVA_HELO;
2023 (nread = recv_line(malware_daemon_ctx.sock, buf, sizeof(buf), tmo)) > 0;
2026 int slen = Ustrlen(buf);
2030 /* Multi line responses are bracketed between 210 … and nnn … */
2031 if (Ustrncmp(buf, "210", 3) == 0)
2036 else if (more_data && isdigit(buf[0])) more_data = 0;
2038 switch (avast_stage)
2041 if (more_data) continue;
2042 if (Ustrncmp(buf, "220", 3) != 0)
2043 goto endloop; /* require a 220 */
2047 if (more_data) continue;
2048 if (Ustrncmp(buf, "200", 3) != 0)
2049 goto endloop; /* require a 200 */
2054 /* Check for another option to send. Newline-terminate it. */
2055 if ((scanrequest = string_nextinlist(&av_scanner_work, &sep,
2058 if (Ustrcmp(scanrequest, "pass_unscanned") == 0)
2060 DEBUG(D_acl) debug_printf_indent("pass unscanned files as clean\n");
2064 scanrequest = string_sprintf("%s\n", scanrequest);
2065 avast_stage = AVA_OPT; /* just sent option */
2066 DEBUG(D_acl) debug_printf_indent("send to avast OPTION: %s", scanrequest);
2070 scanrequest = string_sprintf("SCAN %s\n", eml_dir);
2071 avast_stage = AVA_RSP; /* just sent command */
2072 DEBUG(D_acl) debug_printf_indent("send to avast REQUEST: SCAN %s\n", eml_dir);
2075 /* send config-cmd or scan-request to socket */
2076 len = Ustrlen(scanrequest);
2077 if (send(malware_daemon_ctx.sock, scanrequest, len, 0) == -1)
2079 scanrequest[len-1] = '\0';
2080 return m_panic_defer_3(scanent, CUS callout_address, string_sprintf(
2081 "unable to send request '%s' to socket (%s): %s",
2082 scanrequest, scanner_options, strerror(errno)), malware_daemon_ctx.sock);
2089 if (isdigit(buf[0])) /* We're done */
2092 if (malware_name) /* Nothing else matters, just read on */
2095 if (pcre_exec(ava_re_clean, NULL, CS buf, slen, 0, 0, NULL, 0) == 0)
2098 if ((malware_name = m_pcre_exec(ava_re_virus, buf)))
2100 unescape(malware_name);
2102 debug_printf_indent("unescaped malware name: '%s'\n", malware_name);
2106 if (strict) /* treat scanner errors as malware */
2108 if ((malware_name = m_pcre_exec(ava_re_error, buf)))
2110 unescape(malware_name);
2112 debug_printf_indent("unescaped error message: '%s'\n", malware_name);
2116 else if (pcre_exec(ava_re_error, NULL, CS buf, slen, 0, 0, NULL, 0) == 0)
2118 log_write(0, LOG_MAIN, "internal scanner error (ignored): %s", buf);
2122 /* here also for any unexpected response from the scanner */
2123 DEBUG(D_acl) debug_printf("avast response not handled: '%s'\n", buf);
2127 default: log_write(0, LOG_PANIC, "%s:%d:%s: should not happen",
2128 __FILE__, __LINE__, __FUNCTION__);
2135 if (nread == -1) error_message = US"EOF from scanner";
2136 else if (nread < 0) error_message = US"timeout from scanner";
2137 else if (nread == 0) error_message = US"got nothing from scanner";
2138 else if (buf[0] != '2') error_message = buf;
2140 DEBUG(D_acl) debug_printf_indent("sent to avast QUIT\n");
2141 if (send(malware_daemon_ctx.sock, "QUIT\n", 5, 0) == -1)
2142 return m_panic_defer_3(scanent, CUS callout_address,
2143 string_sprintf("unable to send quit request to socket (%s): %s",
2144 scanner_options, strerror(errno)), malware_daemon_ctx.sock);
2147 return m_panic_defer_3(scanent, CUS callout_address, error_message, malware_daemon_ctx.sock);
2151 } /* scanner type switch */
2153 if (malware_daemon_ctx.sock >= 0)
2154 (void) close (malware_daemon_ctx.sock);
2155 malware_ok = TRUE; /* set "been here, done that" marker */
2158 /* match virus name against pattern (caseless ------->----------v) */
2159 if (malware_name && regex_match_and_setup(re, malware_name, 0, -1))
2161 DEBUG(D_acl) debug_printf_indent(
2162 "Matched regex to malware [%s] [%s]\n", malware_re, malware_name);
2170 /*************************************************
2171 * Scan an email for malware *
2172 *************************************************/
2174 /* This is the normal interface for scanning an email, which doesn't need a
2175 filename; it's a wrapper around the malware_file function.
2178 malware_re match condition for "malware="
2179 timeout if nonzero, timeout in seconds
2181 Returns: Exim message processing code (OK, FAIL, DEFER, ...)
2182 where true means malware was found (condition applies)
2185 malware(const uschar * malware_re, int timeout)
2187 int ret = malware_internal(malware_re, NULL, timeout);
2189 if (ret == DEFER) av_failed = TRUE;
2194 /*************************************************
2195 * Scan a file for malware *
2196 *************************************************/
2198 /* This is a test wrapper for scanning an email, which is not used in
2199 normal processing. Scan any file, using the Exim scanning interface.
2200 This function tampers with various global variables so is unsafe to use
2201 in any other context.
2204 eml_filename a file holding the message to be scanned
2206 Returns: Exim message processing code (OK, FAIL, DEFER, ...)
2207 where true means malware was found (condition applies)
2210 malware_in_file(uschar *eml_filename)
2212 uschar message_id_buf[64];
2215 /* spool_mbox() assumes various parameters exist, when creating
2216 the relevant directory and the email within */
2218 (void) string_format(message_id_buf, sizeof(message_id_buf),
2219 "dummy-%d", vaguely_random_number(INT_MAX));
2220 message_id = message_id_buf;
2221 sender_address = US"malware-sender@example.net";
2223 recipients_list = NULL;
2224 receive_add_recipient(US"malware-victim@example.net", -1);
2225 f.enable_dollar_recipients = TRUE;
2227 ret = malware_internal(US"*", eml_filename, 0);
2229 Ustrncpy(spooled_message_id, message_id, sizeof(spooled_message_id));
2232 /* don't set no_mbox_unspool; at present, there's no way for it to become
2233 set, but if that changes, then it should apply to these tests too */
2237 /* silence static analysis tools */
2247 if (!malware_default_re)
2248 malware_default_re = regex_must_compile(malware_regex_default, FALSE, TRUE);
2250 #ifndef DISABLE_MAL_DRWEB
2252 drweb_re = regex_must_compile(drweb_re_str, FALSE, TRUE);
2254 #ifndef DISABLE_MAL_FSECURE
2256 fsec_re = regex_must_compile(fsec_re_str, FALSE, TRUE);
2258 #ifndef DISABLE_MAL_KAV
2260 kav_re_sus = regex_must_compile(kav_re_sus_str, FALSE, TRUE);
2262 kav_re_inf = regex_must_compile(kav_re_inf_str, FALSE, TRUE);
2264 #ifndef DISABLE_MAL_AVAST
2266 ava_re_clean = regex_must_compile(ava_re_clean_str, FALSE, TRUE);
2268 ava_re_virus = regex_must_compile(ava_re_virus_str, FALSE, TRUE);
2270 ava_re_error = regex_must_compile(ava_re_error_str, FALSE, TRUE);
2272 #ifndef DISABLE_MAL_FFROT6D
2273 if (!fprot6d_re_error)
2274 fprot6d_re_error = regex_must_compile(fprot6d_re_error_str, FALSE, TRUE);
2275 if (!fprot6d_re_virus)
2276 fprot6d_re_virus = regex_must_compile(fprot6d_re_virus_str, FALSE, TRUE);
2282 malware_show_supported(FILE * f)
2284 fprintf(f, "Malware:");
2285 for (struct scan * sc = m_scans; sc->scancode != (scanner_t)-1; sc++) fprintf(f, " %s", sc->name);
2290 # endif /*!MACRO_PREDEF*/
2291 #endif /*WITH_CONTENT_SCAN*/