Autodetect us or ns logfiles

Allow to generate Remote Request Substitution bit content.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>

CMakeLists.txt

@@ -19,6 +19,26 @@ endif()
 # Add an option to enable treating warnings as errors
 option(ENABLE_WERROR "Treat all compiler warnings as errors" OFF)
 option(ENABLE_GPS "Enable GPS support" OFF)
+option(BUILD_SHARED_LIBS "Build shared libraries" ON)
+
+# Options for controlling targets. These groups correspond to the README.
+option(ENABLE_BASIC_TOOLS "Build basic tools" ON)
+option(ENABLE_IP_SERVER   "Build tools providing CAN access via IP sockets" ON)
+option(ENABLE_GATEWAY     "Build in-kernel gateway configuration tools" ON)
+option(ENABLE_MEASUREMENT "Build measurement tools" ON)
+option(ENABLE_ISOTP       "Build isotp tools" ON)
+option(ENABLE_LOG_FILE    "Build log file converter tools" ON)
+option(ENABLE_SLCAN       "Build slcan tools" ON)
+option(ENABLE_MCP251XFD   "Build MCP251XFD tools" ON)
+
+# cmake_dependent_option is only available in CMake 3.22 and later.
+if(ANDROID)
+  set(ENABLE_J1939    OFF)
+  set(ENABLE_ISOBUSFS OFF)
+else()
+  option(ENABLE_J1939    "Build J1939 tools"  ON)
+  option(ENABLE_ISOBUSFS "Build ISOBUS tools" ON)
+endif()
 
 find_package(PkgConfig REQUIRED)
 if(ENABLE_GPS)
@@ -47,24 +67,64 @@ include_directories(./include)
 
 check_function_exists(fork HAVE_FORK)
 
-set(PROGRAMS_CANLIB
-  asc2log
-  canbusload
+# List of all programs to be built.
+# Each program is expected to have a corresponding source file with the same name.
+set(PROGRAMS)
+# List of programs to link against can.
+set(PROGRAMS_CANLIB)
+# List of programs to link against j1939 and can.
+set(PROGRAMS_J1939)
+
+if(ENABLE_BASIC_TOOLS)
+  list(APPEND PROGRAMS cansniffer)
+  list(APPEND PROGRAMS_CANLIB
     candump
-  cangen
     canplayer
     cansend
+    cangen
     cansequence
-  log2asc
-  log2long
-  slcanpty
   )
+endif()
 
-if(HAVE_FORK)
+if(ENABLE_IP_SERVER AND HAVE_FORK)
+  list(APPEND PROGRAMS bcmserver)
   list(APPEND PROGRAMS_CANLIB canlogserver)
 endif()
 
-set(PROGRAMS_J1939
+if(ENABLE_GATEWAY)
+  list(APPEND PROGRAMS cangw)
+endif()
+
+if(ENABLE_MEASUREMENT)
+  list(APPEND PROGRAMS
+    canfdtest
+    canerrsim
+  )
+  list(APPEND PROGRAMS_CANLIB canbusload)
+
+  add_executable(can-calc-bit-timing
+    calc-bit-timing/can-calc-bit-timing.c
+  )
+  install(TARGETS can-calc-bit-timing DESTINATION ${CMAKE_INSTALL_BINDIR})
+endif()
+
+if(ENABLE_ISOTP)
+  list(APPEND PROGRAMS
+    isotpdump
+    isotpperf
+    isotprecv
+    isotpsend
+    isotpsniffer
+    isotptun
+  )
+
+  if(HAVE_FORK)
+    list(APPEND PROGRAMS isotpserver)
+  endif()
+endif()
+
+if(ENABLE_J1939)
+  list(APPEND PROGRAMS_J1939
     j1939acd
     j1939cat
     j1939spy
@@ -72,78 +132,46 @@ set(PROGRAMS_J1939
     testj1939
   )
 
-set(PROGRAMS_J1939_TIMEDATE
-  j1939-timedate-srv
-  j1939-timedate-cli
+  add_executable(j1939-timedate-cli
+    j1939_timedate/j1939_timedate_cli.c
   )
-
-set(PROGRAMS_J1939_VEHICLE_POSITION
-  j1939-vehicle-position-srv
+  target_link_libraries(j1939-timedate-cli
+    PRIVATE can j1939
   )
+  install(TARGETS j1939-timedate-cli DESTINATION ${CMAKE_INSTALL_BINDIR})
 
-set(PROGRAMS_ISOBUSFS
-  isobusfs-srv
-  isobusfs-cli
+  add_executable(j1939-timedate-srv
+    j1939_timedate/j1939_timedate_srv.c
   )
-
-set(PROGRAMS
-  ${PROGRAMS_CANLIB}
-  canerrsim
-  canfdtest
-  cangw
-  cansniffer
-  isotpdump
-  isotpperf
-  isotprecv
-  isotpsend
-  isotpsniffer
-  isotptun
-  slcan_attach
-  slcand
+  target_link_libraries(j1939-timedate-srv
+    PRIVATE can j1939
   )
-
-if(HAVE_FORK)
-  list(APPEND PROGRAMS bcmserver)
-  list(APPEND PROGRAMS isotpserver)
+  install(TARGETS j1939-timedate-srv DESTINATION ${CMAKE_INSTALL_BINDIR})
 endif()
 
-add_executable(can-calc-bit-timing
-  calc-bit-timing/can-calc-bit-timing.c
+if(ENABLE_J1939 AND ENABLE_GPS)
+  add_executable(j1939-vehicle-position-srv
+    j1939_vehicle_position/j1939_vehicle_position_srv.c
   )
-
-add_executable(mcp251xfd-dump
-  mcp251xfd/mcp251xfd-dev-coredump.c
-  mcp251xfd/mcp251xfd-dump.c
-  mcp251xfd/mcp251xfd-main.c
-  mcp251xfd/mcp251xfd-regmap.c
+  target_link_libraries(j1939-vehicle-position-srv
+    PRIVATE can j1939 ${GPS_LIBRARIES}
   )
+  install(TARGETS j1939-vehicle-position-srv DESTINATION ${CMAKE_INSTALL_BINDIR})
+endif()
 
-if(NOT ANDROID)
-  list(APPEND PROGRAMS ${PROGRAMS_J1939})
-
-  add_library(j1939 STATIC
-    libj1939.c
-  )
-
-  target_link_libraries(j1939
-    PRIVATE can
-  )
-
-  add_library(isobusfs SHARED
+if(ENABLE_ISOBUSFS)
+  add_library(isobusfs EXCLUDE_FROM_ALL
     isobusfs/isobusfs_cmn.c
     isobusfs/isobusfs_cmn_dh.c
   )
-
   set(PUBLIC_HEADER_ISOBUSFS
     isobusfs/isobusfs_cmn.h
     isobusfs/isobusfs_cmn_cm.h
   )
-
   set_target_properties(isobusfs PROPERTIES
     PUBLIC_HEADER "${PUBLIC_HEADER_ISOBUSFS}"
     SOVERSION 0
   )
-
   install(TARGETS isobusfs
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
@@ -157,10 +185,10 @@ if(NOT ANDROID)
     isobusfs/isobusfs_cli_selftests.c
     isobusfs/isobusfs_cli_int.c
   )
-
   target_link_libraries(isobusfs-cli
     PRIVATE isobusfs can j1939
   )
+  install(TARGETS isobusfs-cli DESTINATION ${CMAKE_INSTALL_BINDIR})
 
   add_executable(isobusfs-srv
     isobusfs/isobusfs_srv.c
@@ -171,66 +199,55 @@ if(NOT ANDROID)
     isobusfs/isobusfs_srv_fh.c
     isobusfs/isobusfs_srv_vh.c
   )
-
   target_link_libraries(isobusfs-srv
     PRIVATE isobusfs can j1939
   )
-
-  install(TARGETS
-    isobusfs-cli
-    isobusfs-srv
-    DESTINATION ${CMAKE_INSTALL_BINDIR})
-
-  set(PUBLIC_HEADER_j1939_TIMEDATE
-    j1939_timedate/j1939_timedate_cmn.h
-  )
-
-  add_executable(j1939-timedate-cli
-    j1939_timedate/j1939_timedate_cli.c
-  )
-
-  target_link_libraries(j1939-timedate-cli
-    PRIVATE can j1939
-  )
-
-  add_executable(j1939-timedate-srv
-    j1939_timedate/j1939_timedate_srv.c
-  )
-
-  target_link_libraries(j1939-timedate-srv
-    PRIVATE can j1939
-  )
-
-  install(TARGETS
-    j1939-timedate-cli
-    j1939-timedate-srv
-    DESTINATION ${CMAKE_INSTALL_BINDIR})
-
-  if(ENABLE_GPS)
-    set(PUBLIC_HEADER_J1939_VEHICLE_POSITION
-      j1939_vehicle_position/j1939_vehicle_position_cmn.h
-    )
-
-    add_executable(j1939-vehicle-position-srv
-      j1939_vehicle_position/j1939_vehicle_position_srv.c
-    )
-
-    target_link_libraries(j1939-vehicle-position-srv
-      PRIVATE can j1939 ${GPS_LIBRARIES}
-    )
-
-    install(TARGETS
-      j1939-vehicle-position-srv
-      DESTINATION ${CMAKE_INSTALL_BINDIR})
+  install(TARGETS isobusfs-srv DESTINATION ${CMAKE_INSTALL_BINDIR})
 endif()
 
+if(ENABLE_LOG_FILE)
+  list(APPEND PROGRAMS_CANLIB
+    asc2log
+    log2asc
+    log2long
+  )
 endif()
 
-add_library(can STATIC
+if(ENABLE_SLCAN)
+  list(APPEND PROGRAMS
+    slcan_attach
+    slcand
+  )
+  list(APPEND PROGRAMS_CANLIB slcanpty)
+endif()
+
+if(ENABLE_MCP251XFD)
+  add_executable(mcp251xfd-dump
+    mcp251xfd/mcp251xfd-dev-coredump.c
+    mcp251xfd/mcp251xfd-dump.c
+    mcp251xfd/mcp251xfd-main.c
+    mcp251xfd/mcp251xfd-regmap.c
+  )
+  install(TARGETS mcp251xfd-dump DESTINATION ${CMAKE_INSTALL_BINDIR})
+endif()
+
+list(APPEND PROGRAMS
+  ${PROGRAMS_CANLIB}
+  ${PROGRAMS_J1939}
+)
+
+add_library(can STATIC EXCLUDE_FROM_ALL
   lib.c
   canframelen.c
 )
 
+add_library(j1939 STATIC EXCLUDE_FROM_ALL
+  libj1939.c
+)
+target_link_libraries(j1939
+  PRIVATE can
+)
+
 foreach(name ${PROGRAMS})
   add_executable(${name} ${name}.c)
 
@@ -247,12 +264,6 @@ foreach(name ${PROGRAMS})
   install(TARGETS ${name} DESTINATION ${CMAKE_INSTALL_BINDIR})
 endforeach()
 
-install(TARGETS
-  can-calc-bit-timing
-  mcp251xfd-dump
-  DESTINATION ${CMAKE_INSTALL_BINDIR}
-)
-
 add_custom_target(uninstall
   "${CMAKE_COMMAND}" -P "${CMAKE_SOURCE_DIR}/cmake/make_uninstall.cmake"
   COMMENT "Add uninstall target"

README.md

@@ -50,6 +50,10 @@ subsystem (aka SocketCAN):
 Follow the link to see examples on how this tools can be used:
 [Kickstart guide to can-j1939 on linux](https://github.com/linux-can/can-utils/blob/master/can-j1939-kickstart.md)
 
+#### ISOBus File server tools
+* isobusfs-cli : ISOBus file client
+* isobusfs-srv : ISOBus file server
+
 #### Log file converters
 * asc2log : convert ASC logfile to compact CAN frame logfile
 * log2asc : convert compact CAN frame logfile to ASC logfile

calc-bit-timing/can-calc-bit-timing.c

@@ -1121,6 +1121,11 @@ static const unsigned int common_data_bitrates[] = {
 	4000000,
 	2000000,
 	1000000,
+	800000,
+	500000,
+	250000,
+	125000,
+	100000,
 	0
 };
 

candump.c

@@ -221,7 +221,7 @@ static int idx2dindex(int ifidx, int socket)
 	return i;
 }
 
-static int sprint_timestamp(char *ts_buffer, const char timestamp, unsigned char use_ns,
+static int sprint_timestamp(char *ts_buffer, const char timestamp, const char use_ns,
 			    const struct timespec *ts, struct timespec *const last_ts)
 {
 	int numchars = 0;
@@ -857,11 +857,9 @@ int main(int argc, char **argv)
 			/* build common log format output */
 			if ((log) || ((logfrmt) && (silent == SILENT_OFF))) {
 
-				alen = sprint_timestamp(afrbuf, logtimestamp, use_ns,
-							  &ts, &last_ts);
+				alen = sprint_timestamp(afrbuf, logtimestamp, use_ns, &ts, &last_ts);
 
-				alen += sprintf(afrbuf + alen, "%*s ",
-						  max_devname_len, devname[idx]);
+				alen += sprintf(afrbuf + alen, "%*s ", max_devname_len, devname[idx]);
 
 				alen += snprintf_canframe(afrbuf + alen, sizeof(afrbuf) - alen, &cu, 0);
 			}

cangen.c

@@ -987,12 +987,12 @@ int main(int argc, char **argv)
 			rnd = random();
 
 			if (xl_flags_mode == MODE_RANDOM) {
-				cu.xl.flags = rnd & CANXL_SEC;
+				cu.xl.flags = rnd & (CANXL_SEC | CANXL_RRS);
 			} else if (xl_flags_mode == MODE_FIX) {
 				cu.xl.flags = xl_flags;
 			} else if (xl_flags_mode == MODE_INCREMENT) {
-				xl_flags ^= CANXL_SEC;
-				cu.xl.flags = (xl_flags & CANXL_SEC);
+				xl_flags++;
+				cu.xl.flags = (xl_flags & (CANXL_SEC | CANXL_RRS));
 			}
 
 			/* mark CAN XL frame */

canplayer.c

@@ -452,14 +452,20 @@ int main(int argc, char **argv)
 			return 1;
 		}
 		log_tv.tv_sec = sec;
-		log_tv.tv_usec = usec;
 
 		/*
-		 * ensure the fractions of seconds are 6 decimal places long to catch
+		 * ensure the fractions of seconds are 6 or 9 decimal places long to catch
 		 * 3rd party or handcrafted logfiles that treat the timestamp as float
 		 */
-		if (strchr(buf, ')') - strchr(buf, '.') != 7) {
-			fprintf(stderr, "timestamp format in logfile requires 6 decimal places\n");
+		switch (strchr(buf, ')') - strchr(buf, '.')) {
+		case 7: //6
+			log_tv.tv_usec = usec;
+			break;
+		case 10: //9
+			log_tv.tv_usec = usec / 1000;
+			break;
+		default:
+			fprintf(stderr, "timestamp format in logfile requires 6 or 9 decimal places\n");
 			return 1;
 		}
 
@@ -541,19 +547,25 @@ int main(int argc, char **argv)
 					break;
 				}
 
-				if (sscanf(buf, "(%llu.%llu) %s %s", &sec, &usec, device, afrbuf) != 4) {
+				if (sscanf(buf, "(%llu.%llu) %21s %6299s", &sec, &usec, device, afrbuf) != 4) {
 					fprintf(stderr, "incorrect line format in logfile\n");
 					return 1;
 				}
 				log_tv.tv_sec = sec;
-				log_tv.tv_usec = usec;
 
 				/*
-				 * ensure the fractions of seconds are 6 decimal places long to catch
+				 * ensure the fractions of seconds are 6 or 9 decimal places long to catch
 				 * 3rd party or handcrafted logfiles that treat the timestamp as float
 				 */
-				if (strchr(buf, ')') - strchr(buf, '.') != 7) {
-					fprintf(stderr, "timestamp format in logfile requires 6 decimal places\n");
+				switch (strchr(buf, ')') - strchr(buf, '.')) {
+				case 7: //6
+					log_tv.tv_usec = usec;
+					break;
+				case 10: //9
+					log_tv.tv_usec = usec / 1000;
+					break;
+				default:
+					fprintf(stderr, "timestamp format in logfile requires 6 or 9 decimal places\n");
 					return 1;
 				}
 

log2asc.c

@@ -407,7 +407,22 @@ int main(int argc, char **argv)
 			}
 		}
 		tv.tv_sec = sec;
+
+		/*
+		 * ensure the fractions of seconds are 6 or 9 decimal places long to catch
+		 * 3rd party or handcrafted logfiles that treat the timestamp as float
+		 */
+		switch (strchr(buf, ')') - strchr(buf, '.')) {
+		case 7: //6
 			tv.tv_usec = usec;
+			break;
+		case 10: //9
+			tv.tv_usec = usec / 1000;
+			break;
+		default:
+			fprintf(stderr, "timestamp format in logfile requires 6 or 9 decimal places\n");
+			return 1;
+		}
 
 		if (print_banner) { /* print banner */
 			print_banner = 0;

log2long.c

@@ -51,7 +51,7 @@
 #include "lib.h"
 
 #define DEVSZ 22
-#define TIMESZ 22 /* sizeof("(1345212884.318850)   ") */
+#define TIMESZ 25 /* sizeof("(1345212884.318850123)   ") */
 #define BUFSZ (DEVSZ + AFRSZ + TIMESZ)
 
 /* adapt sscanf() functions below on error */
@@ -61,7 +61,7 @@
 #if (DEVSZ != 22)
 #error "DEVSZ value does not fit sscanf restrictions!"
 #endif
-#if (TIMESZ != 22)
+#if (TIMESZ != 25)
 #error "TIMESZ value does not fit sscanf restrictions!"
 #endif
 
@@ -78,7 +78,7 @@ int main(void)
 			return 1;
 		}
 
-		if (sscanf(buf, "%21s %21s %6299s", timestamp, device, afrbuf) != 3)
+		if (sscanf(buf, "%24s %21s %6299s", timestamp, device, afrbuf) != 3)
 			return 1;
 
 		mtu = parse_canframe(afrbuf, &cu);

slcand.c

@@ -370,8 +370,13 @@ int main(int argc, char *argv[])
 	
 	/* retrieve the name of the created CAN netdevice */
 	if (ioctl(fd, SIOCGIFNAME, ifr.ifr_name) < 0) {
+		if (name) {
 			perror("ioctl SIOCGIFNAME");
 			exit(EXIT_FAILURE);
+		} else {
+			/* Graceful degradation: we only needed the name for display. */
+			snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "<unknown>");
+		}
 	}
 
 	syslogger(LOG_NOTICE, "attached TTY %s to netdevice %s\n", ttypath, ifr.ifr_name);