string handling: strlen for gstring

[exim.git] / src / src / functions.h

diff --git a/src/src/functions.h b/src/src/functions.h
index 3b3a12b18c2fbf1cfbcde79622f04b874209ab12..7677a3cd95e390e4ac32252477b40c94d6945aa3 100644 (file)
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -55,6 +55,7 @@ extern BOOL    tls_client_start(client_conn_ctx *, smtp_connect_args *,
 extern void    tls_close(void *, int);
 extern BOOL    tls_could_read(void);
 extern void    tls_daemon_init(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);
@@ -136,6 +137,7 @@ extern gstring *authres_spf(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 *);
@@ -175,8 +177,8 @@ extern void    debug_print_tree(tree_node *);
 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);
@@ -197,8 +199,8 @@ extern BOOL    dkim_transport_write_message(transport_ctx *,
 #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 time_t  dns_expire_from_soa(dns_answer *);
+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 *);
@@ -446,6 +448,7 @@ extern void    smtp_command_timeout_exit(void) NORETURN;
 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 *,
@@ -540,6 +543,7 @@ 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
@@ -816,6 +820,12 @@ g->s[g->ptr] = '\0';
 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__)
@@ -902,9 +912,18 @@ return string_sprintf("%s/%s/%s/%s/%s%s",
 
 static inline uschar *
 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
-               const uschar * suffix)
+       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
@@ -917,8 +936,10 @@ subdir_str[1] = '\0';
 }
 
 /******************************************************************************/
+/* Time calculations */
+
 static inline void
-timesince(struct timeval * diff, struct timeval * then)
+timesince(struct timeval * diff, const struct timeval * then)
 {
 gettimeofday(diff, NULL);
 diff->tv_sec -= then->tv_sec;
@@ -930,20 +951,20 @@ if ((diff->tv_usec -= then->tv_usec) < 0)
 }
 
 static inline uschar *
-string_timediff(struct timeval * diff)
+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);
 
-sprintf(CS buf, "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
+snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
 return buf;
 }
 
 
 static inline uschar *
-string_timesince(struct timeval * then)
+string_timesince(const struct timeval * then)
 {
 struct timeval diff;
 timesince(&diff, then);
@@ -951,7 +972,7 @@ return string_timediff(&diff);
 }
 
 static inline void
-report_time_since(struct timeval * t0, uschar * where)
+report_time_since(const struct timeval * t0, const uschar * where)
 {
 # ifdef MEASURE_TIMING
 struct timeval diff;
@@ -970,6 +991,51 @@ if (f.running_in_test_harness) 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_ */