#ifndef _FUNCTIONS_H_
#define _FUNCTIONS_H_
+#include <sys/time.h>
+
#ifdef EXIM_PERL
extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
extern uschar * tls_cert_fprt_sha1(void *);
extern uschar * tls_cert_fprt_sha256(void *);
+extern void tls_clean_env(void);
extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
void *, tls_support *, uschar **);
extern void tls_close(void *, int);
extern BOOL tls_could_read(void);
extern void tls_daemon_init(void);
-extern int tls_export_cert(uschar *, size_t, void *);
+extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
+extern BOOL tls_export_cert(uschar *, size_t, void *);
extern int tls_feof(void);
extern int tls_ferror(void);
extern void tls_free_cert(void **);
extern int tls_getc(unsigned);
extern uschar *tls_getbuf(unsigned *);
extern void tls_get_cache(void);
-extern int tls_import_cert(const uschar *, void **);
+extern BOOL tls_import_cert(const uschar *, void **);
extern int tls_read(void *, uschar *, size_t);
extern int tls_server_start(const uschar *, uschar **);
extern BOOL tls_smtp_buffered(void);
#ifndef DISABLE_DKIM
extern gstring *authres_dkim(gstring *);
#endif
-#ifdef EXPERIMENTAL_DMARC
+#ifdef SUPPORT_DMARC
extern gstring *authres_dmarc(gstring *);
#endif
extern gstring *authres_smtpauth(gstring *);
#endif
extern uschar *b64encode(const uschar *, int);
+extern uschar *b64encode_taint(const uschar *, int, BOOL);
extern int b64decode(const uschar *, uschar **);
extern int bdat_getc(unsigned);
extern uschar *bdat_getbuf(unsigned *);
extern void debug_vprintf(int, const char *, va_list);
extern void decode_bits(unsigned int *, size_t, int *,
uschar *, bit_table *, int, uschar *, int);
+extern void delete_pid_file(void);
extern address_item *deliver_make_addr(uschar *, BOOL);
-extern void deliver_init(void);
extern void delivery_log(int, address_item *, int, uschar *);
extern int deliver_message(uschar *, BOOL, BOOL);
extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
extern uschar *deliver_get_sender_address (uschar *id);
extern void delivery_re_exec(int);
+extern void die_tainted(const uschar *, const uschar *, int);
extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
#ifndef DISABLE_DKIM
extern uschar *dkim_exim_query_dns_txt(const uschar *);
#endif
extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
extern int dns_basic_lookup(dns_answer *, const uschar *, int);
-extern void dns_build_reverse(const uschar *, uschar *);
+extern uschar *dns_build_reverse(const uschar *);
+extern time_t dns_expire_from_soa(dns_answer *, int);
extern void dns_init(BOOL, BOOL, BOOL);
extern BOOL dns_is_aa(const dns_answer *);
extern BOOL dns_is_secure(const dns_answer *);
extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
extern int ip_socket(int, int);
-extern int ip_tcpsocket(const uschar *, uschar **, int);
+extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
extern int ip_unixsocket(const uschar *, uschar **);
-extern int ip_streamsocket(const uschar *, uschar **, int);
+extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
extern int ipv6_nmtoa(int *, uschar *);
const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
extern void moan_write_from(FILE *);
+extern void moan_write_references(FILE *, uschar *);
extern FILE *modefopen(const uschar *, const char *, mode_t);
extern int open_cutthrough_connection( address_item * addr );
extern BOOL queue_action(uschar *, int, uschar **, int, int);
extern void queue_check_only(void);
+extern unsigned queue_count(void);
+extern unsigned queue_count_cached(void);
extern void queue_list(int, uschar **, int);
-extern void queue_count(void);
+#ifdef EXPERIMENTAL_QUEUE_RAMP
+extern void queue_notify_daemon(const uschar * hostname);
+#endif
extern void queue_run(uschar *, uschar *, BOOL);
extern int random_number(int);
extern void smtp_command_sigterm_exit(void) NORETURN;
extern void smtp_data_timeout_exit(void) NORETURN;
extern void smtp_data_sigint_exit(void) NORETURN;
+extern void smtp_deliver_init(void);
extern uschar *smtp_cmd_hist(void);
extern int smtp_connect(smtp_connect_args *, const blob *);
extern int smtp_sock_connect(host_item *, int, int, uschar *,
extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
#endif
extern void spool_clear_header_globals(void);
-extern uschar *spool_dname(const uschar *, uschar *);
-extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);
extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
extern int spool_open_datafile(uschar *);
extern int spool_open_temp(uschar *);
extern int spool_read_header(uschar *, BOOL, BOOL);
-extern uschar *spool_sname(const uschar *, uschar *);
extern int spool_write_header(uschar *, int, uschar **);
extern int stdin_getc(unsigned);
extern int stdin_feof(void);
extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
extern const uschar *string_printing2(const uschar *, BOOL);
extern uschar *string_split_message(uschar *);
-extern uschar *string_timediff(struct timeval *);
-extern uschar *string_timesince(struct timeval *);
extern uschar *string_unprinting(uschar *);
#ifdef SUPPORT_I18N
extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
extern int strncmpic(const uschar *, const uschar *, int);
extern uschar *strstric(uschar *, uschar *, BOOL);
+extern int test_harness_fudged_queue_time(int);
+extern void tcp_init(void);
#ifdef EXIM_TFO_PROBE
extern void tfo_probe(void);
#endif
-extern void timesince(struct timeval * diff, struct timeval * then);
extern void tls_modify_variables(tls_support *);
extern uschar *tod_stamp(int);
extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
+/******************************************************************************/
+/* Predicate: if an address is in a tainted pool.
+By extension, a variable pointing to this address is tainted.
+*/
+
+static inline BOOL
+is_tainted(const void * p)
+{
+#if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
+return FALSE;
+
+#else
+extern BOOL is_tainted_fn(const void *);
+return is_tainted_fn(p);
+#endif
+}
+
+/******************************************************************************/
+/* String functions */
+static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
+{
+#if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
+if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
+#endif
+return US strcat(CS dst, CCS src);
+}
+static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
+{
+#if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
+if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
+#endif
+return US strcpy(CS dst, CCS src);
+}
+static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
+{
+#if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
+if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
+#endif
+return US strncat(CS dst, CCS src, n);
+}
+static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
+{
+#if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
+if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
+#endif
+return US strncpy(CS dst, CCS src, n);
+}
+/*XXX will likely need unchecked copy also */
+
+
+/******************************************************************************/
+
#if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
/* exim_chown - in some NFSv4 setups *seemes* to be an issue with
chown(<exim-uid>, <exim-gid>).
return chown(CCS name, owner, group)
? exim_chown_failure(-1, name, owner, group) : 0;
}
-
#endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
+
/******************************************************************************/
/* String functions */
string_copy_taint_trc((s), tainted, __FUNCTION__, __LINE__)
static inline uschar *
-string_copy(const uschar * s)
+string_copy_trc(const uschar * s, const char * func, int line)
{
-return string_copy_taint((s), is_tainted(s));
+return string_copy_taint_trc((s), is_tainted(s), func, line);
}
+#define string_copy(s) \
+ string_copy_trc((s), __FUNCTION__, __LINE__)
+
/*************************************************
* Copy, lowercase and save string *
return g->s;
}
+static inline unsigned
+gstring_length(const gstring * g)
+{
+return g ? (unsigned)g->ptr : 0;
+}
+
#define gstring_release_unused(g) \
gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
}
/******************************************************************************/
+
+#define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
+
+static inline dns_answer *
+store_get_dns_answer_trc(const uschar * func, unsigned line)
+{
+return store_get_3(sizeof(dns_answer), TRUE, CCS func, line); /* use tainted mem */
+}
+
+/******************************************************************************/
+/* Routines with knowledge of spool layout */
+
+# ifndef COMPILE_UTILITY
+static inline void
+spool_pname_buf(uschar * buf, int len)
+{
+snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
+}
+
+static inline uschar *
+spool_dname(const uschar * purpose, uschar * subdir)
+{
+return string_sprintf("%s/%s/%s/%s",
+ spool_directory, queue_name, purpose, subdir);
+}
+# endif
+
+static inline uschar *
+spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
+{
+return string_sprintf("%s%s%s%s%s",
+ q, *q ? "/" : "",
+ purpose,
+ *subdir ? "/" : "", subdir);
+}
+
+static inline uschar *
+spool_sname(const uschar * purpose, uschar * subdir)
+{
+return spool_q_sname(purpose, queue_name, subdir);
+}
+
+static inline uschar *
+spool_q_fname(const uschar * purpose, const uschar * q,
+ const uschar * subdir, const uschar * fname, const uschar * suffix)
+{
+return string_sprintf("%s/%s/%s/%s/%s%s",
+ spool_directory, q, purpose, subdir, fname, suffix);
+}
+
+static inline uschar *
+spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
+ const uschar * suffix)
+{
+#ifdef COMPILE_UTILITY /* version avoiding string-extension */
+int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
+ + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
+uschar * buf = store_get(len, FALSE);
+string_format(buf, len, "%s/%s/%s/%s/%s%s",
+ spool_directory, queue_name, purpose, subdir, fname, suffix);
+return buf;
+#else
+return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
+#endif
+}
+
+static inline void
+set_subdir_str(uschar * subdir_str, const uschar * name,
+ int search_sequence)
+{
+subdir_str[0] = split_spool_directory == (search_sequence == 0)
+ ? name[5] : '\0';
+subdir_str[1] = '\0';
+}
+
+/******************************************************************************/
+/* Time calculations */
+
+static inline void
+timesince(struct timeval * diff, const struct timeval * then)
+{
+gettimeofday(diff, NULL);
+diff->tv_sec -= then->tv_sec;
+if ((diff->tv_usec -= then->tv_usec) < 0)
+ {
+ diff->tv_sec--;
+ diff->tv_usec += 1000*1000;
+ }
+}
+
+static inline uschar *
+string_timediff(const struct timeval * diff)
+{
+static uschar buf[sizeof("0.000s")];
+
+if (diff->tv_sec >= 5 || !LOGGING(millisec))
+ return readconf_printtime((int)diff->tv_sec);
+
+snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
+return buf;
+}
+
+
+static inline uschar *
+string_timesince(const struct timeval * then)
+{
+struct timeval diff;
+timesince(&diff, then);
+return string_timediff(&diff);
+}
+
+static inline void
+report_time_since(const struct timeval * t0, const uschar * where)
+{
+# ifdef MEASURE_TIMING
+struct timeval diff;
+timesince(&diff, t0);
+fprintf(stderr, "%d %s:\t%ld.%06ld\n",
+ (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
+# endif
+}
+
+
+static inline void
+testharness_pause_ms(int millisec)
+{
+#ifndef MEASURE_TIMING
+if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
+#endif
+}
+
+/******************************************************************************/
+/* Taint-checked file opens */
+
+static inline int
+exim_open2(const char *pathname, int flags)
+{
+if (!is_tainted(pathname)) return open(pathname, flags);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+static inline int
+exim_open(const char *pathname, int flags, mode_t mode)
+{
+if (!is_tainted(pathname)) return open(pathname, flags, mode);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+static inline int
+exim_openat(int dirfd, const char *pathname, int flags)
+{
+if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+static inline int
+exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
+{
+if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+
+static inline FILE *
+exim_fopen(const char *pathname, const char *mode)
+{
+if (!is_tainted(pathname)) return fopen(pathname, mode);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return NULL;
+}
+
#endif /* !MACRO_PREDEF */
#endif /* _FUNCTIONS_H_ */
git://git.exim.org / users / jgh / exim.git / blobdiff