commit - 845a0145490466f2974e657ab496e0307daf4cf2
commit + cfd602546a3a8599b29e70c9a9ae29fe747768d1
blob - 265b8562f26ac2b131ba8ca0ff4d1e05af32ba4a
blob + 7180d5304ca3068eb66da031a4faead90d635bb2
--- commands.c
+++ commands.c
char hname[HSIZE];
char hbuf[MAXHOSTNAMELEN]; /* host name */
-char ifname[IFNAMSIZ]; /* interface name */
+char ifname[IFNAMSIZ]= ""; /* interface name */
+
struct intlist *whichlist;
pid_t child;
static int int_shell(char *, int, int, char **);
static int int_clear(void);
static int int_help(void);
+static int int_interface(char *, int, int, char **);
static int int_exit(void);
static int hostname(int, char **);
static int manual(int, char**);
}
return 0;
}
+
+
+static int
+is_bad_input(const char *buf, size_t num)
+{
+ int i;
+ if (num >= sizeof(line)) {
+ printf("%% Input exceeds permitted length\n");
+ return 1;
+ }
+
+ for (i = 0; i < num; i++) {
+ if (!isprint((unsigned char)buf[i])) {
+ printf("%% Input contains bad character\n");
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
/*
+ * Try to read a non-empty command into the global line buffer.
+ * Return -1 upon error from el_gets().
+ * If successful, enter the command into editing history and
+ * return the amount of characters read.
+ * The Enter key by itself has no effect.
+ * Return 0 if EOF or ".." is read.
+ * Do not add ".." to editing history.
+ */
+static int
+read_command_line(EditLine *el, History *hist)
+{
+ const char *buf;
+ int num;
+
+ do {
+ num = 0;
+ if ((buf = el_gets(el, &num)) == NULL) {
+ if (num == -1)
+ return -1;
+ /* EOF, e.g. ^X or ^D via exit_i() in complete.c */
+ return 0;
+ }
+ while (num > 0 && isspace((unsigned char)buf[num - 1]))
+ num--;
+ if (is_bad_input(buf, num))
+ continue;
+ } while (num == 0); /* Enter key */
+
+ if (num == 2 && strncmp(buf, "..", num) == 0)
+ return 0;
+
+ memcpy(line, buf, (size_t)num);
+ line[num] = '\0';
+ history(hist, &ev, H_ENTER, buf);
+ return num;
+}
+
+/*
+ * command handler for interface and bridge modes
+ *
+ * acts as a loop for human keyboard user, and as a one time command
+ * lookup for rcfile -c or -i usage
+ *
+ * if a function returns to interface() with a 1, interface() will break
+ * the user back to command() mode.
+ *
+ * While this function is active the global ifname buffer contains the
+ * name of the interface being configured.
+ * Ensure that the ifname buffer gets cleared on exit. This allows nested
+ * commands to tell whether a interface/bridge context is active, and which
+ * interface/bridge is being configured.
+ */
+static int
+interface(int argc, char **argv, char *modhvar)
+{
+ int ifs, set = 1;
+ char *tmp;
+ char *ifunit = NULL;
+ struct intlist *i; /* pointer to current command */
+ struct ifreq ifr;
+
+ if (!modhvar) {
+ if (NO_ARG(argv[0])) {
+ argv++;
+ argc--;
+ set = 0;
+ }
+ if (argc == 3) {
+ /*
+ * Allow "interface-name interface-number" as some
+ * network switches do: interface em 0
+ */
+ ifunit = argv[2];
+ } else if (argc != 2) {
+ printf("%% [no] interface <interface name>\n");
+ return(0);
+ }
+ tmp = argv[1];
+ } else {
+ /* called from cmdrc(), processing config file rules only */
+ if (argc == 2 && strcmp(modhvar, argv[1]) == 0) {
+ /* do-nothing */
+ return(0);
+ }
+ tmp = modhvar;
+ }
+
+ if (strlen(tmp) > IFNAMSIZ-1) {
+ printf("%% interface name too long\n");
+ return(0);
+ }
+
+
+ strlcpy(ifname, tmp, IFNAMSIZ);
+ if (ifunit) {
+ const char *errstr;
+ size_t len = strlen(ifname);
+ strtonum(ifunit, 0, INT_MAX, &errstr);
+ if (errstr) {
+ printf("%% interface unit %s is %s\n", ifunit, errstr);
+ ifname[0] = '\0';
+ return(1);
+ }
+ if (len > 0 && isdigit((unsigned char)(ifname[len - 1]))) {
+ printf("%% interface unit %s is redundant\n", ifunit);
+ ifname[0] = '\0';
+ return(1);
+ }
+ strlcat(ifname, ifunit, sizeof(ifname));
+ printf("%% Interface name is %s not \"%s %s\"\n",
+ ifname, tmp, ifunit);
+ }
+ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+ ifs = socket(AF_INET, SOCK_DGRAM, 0);
+ if (ifs < 0) {
+ printf("%% socket failed: %s\n", strerror(errno));
+ ifname[0] = '\0';
+ return(1);
+ }
+
+ if (!is_valid_ifname(ifname)) {
+ if (set == 0) {
+ printf("%% interface %s not found\n", ifname);
+ close(ifs);
+ return(0);
+ }
+ if (ioctl(ifs, SIOCIFCREATE, &ifr) == -1) {
+ if (errno == EINVAL)
+ printf("%% interface %s not found\n", ifname);
+ else
+ printf("%% unable to create interface %s: %s\n",
+ ifname, strerror(errno));
+ ifname[0] = '\0';
+ close(ifs);
+ return(0);
+ }
+ }
+
+ if (set == 0) {
+ if (ioctl(ifs, SIOCIFDESTROY, &ifr) == -1) {
+ printf("%% unable to remove interface %s: %s\n",
+ ifname, strerror(errno));
+ } else {
+ /* remove interface routes? */
+ }
+ ifname[0] = '\0';
+ close(ifs);
+ return(0);
+ }
+
+ if (is_bridge(ifs, ifname)) {
+ /* whichlist also used by help, command completion code */
+ whichlist = Bridgelist;
+ bridge = 1;
+ } else {
+ whichlist = Intlist;
+ bridge = 0;
+ }
+
+ imr_init(ifname);
+
+ if (modhvar) {
+ /* direct rcfile -i or -c initialization */
+ char *argp;
+
+ if (argc - 1 > NARGS)
+ argc = NARGS;
+ if (argv[0] == 0) {
+ ifname[0] = '\0';
+ return(0);
+ }
+ if (NO_ARG(argv[0]))
+ argp = argv[1];
+ else
+ argp = argv[0];
+ i = (struct intlist *) genget(argp, (char **)
+ whichlist, sizeof(struct intlist));
+ if (Ambiguous(i)) {
+ printf("%% Ambiguous command\n");
+ } else if (i == 0) {
+ printf("%% Invalid command\n");
+ } else {
+ int save_cli_rtable = cli_rtable;
+ cli_rtable = 0;
+
+ ((*i->handler) (ifname, ifs, argc, argv));
+
+ cli_rtable = save_cli_rtable;
+ }
+
+ ifname[0] = '\0';
+ return(0);
+ }
+
+ /* human at the keyboard or commands on stdin */
+ for (;;) {
+ char *margp;
+
+ if (!editing) {
+ /* command line editing disabled */
+ if (interactive_mode)
+ printf("%s", iprompt());
+ if (fgets(line, sizeof(line), stdin) == NULL) {
+ if (feof(stdin) || ferror(stdin)) {
+ if (interactive_mode)
+ printf("\n");
+ ifname[0] = '\0';
+ close(ifs);
+ return(0);
+ }
+ break;
+ }
+ if (line[0] == '\0')
+ break;
+ } else {
+ int num;
+
+ cursor_pos = NULL;
+ num = read_command_line(eli, histi);
+ if (num == 0)
+ break;
+ if (num == -1) {
+ printf("%% Input error: %s\n",
+ strerror(errno));
+ ifname[0] = '\0';
+ close(ifs);
+ return(1);
+ }
+ }
+
+ makeargv();
+ if (margv[0] == 0)
+ break;
+ if (NO_ARG(margv[0]))
+ margp = margv[1];
+ else
+ margp = margv[0];
+ i = (struct intlist *) genget(margp, (char **)
+ whichlist, sizeof(struct intlist));
+ if (Ambiguous(i)) {
+ printf("%% Ambiguous command\n");
+ } else if (i == 0) {
+ int val = 1;
+
+ if (editing)
+ val = el_burrito(eli, margc, margv);
+ if (val)
+ printf("%% Invalid command\n");
+ } else {
+ int save_cli_rtable = cli_rtable;
+ cli_rtable = 0;
+
+ if ((*i->handler) (ifname, ifs, margc, margv)) {
+ cli_rtable = save_cli_rtable;
+ break;
+ }
+ cli_rtable = save_cli_rtable;
+ }
+ }
+
+ ifname[0] = '\0';
+ close(ifs);
+ return(0);
+}
+
+/*
* Data structures and routines for the interface configuration mode
*/
{ "?", "Options", CMPL0 0, 0, int_help, 0 },
{ "manual", manhelp, CMPL(H) (char **)mantab, sizeof(struct ghs), int_manual, 0 },
{ "help", 0, CMPL0 0, 0, int_help, 0 },
+ { "interface", "jump to config mode of another interface",
+ CMPL(i) 0, 0, int_interface, 0 },
{ "exit", "Leave interface config mode and return to global config mode ",
CMPL0 0, 0, int_exit, 0 },
{ "?", "Options", CMPL0 0, 0, int_help, 0 },
{ "manual", manhelp, CMPL(H) (char **)mantab, sizeof(struct ghs), int_manual, 0 },
{ "help", 0, CMPL0 0, 0, int_help, 0 },
+ { "interface", "jump to config mode of another interface",
+ CMPL(i) 0, 0, int_interface, 0 },
{ "exit", "Leave bridge config mode and return to global config mode ",
- CMPL0 0, 0, int_exit },
+ CMPL0 0, 0, int_exit, 0 },
{ 0, 0, 0, 0, 0, 0 }
};
-
size_t Bridgelist_nitems = nitems(Bridgelist);
static int
-is_bad_input(const char *buf, size_t num)
+int_interface(char *ifname, int ifs, int argc, char **argv)
{
- int i;
-
- if (num >= sizeof(line)) {
- printf("%% Input exceeds permitted length\n");
- return 1;
- }
-
- for (i = 0; i < num; i++) {
- if (!isprint((unsigned char)buf[i])) {
- printf("%% Input contains bad character\n");
- return 1;
- }
- }
-
- return 0;
+ int_exit();
+ /*interface(*ifname, argc, **argv);*/
+
}
-
-/*
- * Try to read a non-empty command into the global line buffer.
- * Return -1 upon error from el_gets().
- * If successful, enter the command into editing history and
- * return the amount of characters read.
- * The Enter key by itself has no effect.
- * Return 0 if EOF or ".." is read.
- * Do not add ".." to editing history.
- */
-static int
-read_command_line(EditLine *el, History *hist)
-{
- const char *buf;
- int num;
-
- do {
- num = 0;
- if ((buf = el_gets(el, &num)) == NULL) {
- if (num == -1)
- return -1;
- /* EOF, e.g. ^X or ^D via exit_i() in complete.c */
- return 0;
- }
- while (num > 0 && isspace((unsigned char)buf[num - 1]))
- num--;
- if (is_bad_input(buf, num))
- continue;
- } while (num == 0); /* Enter key */
-
- if (num == 2 && strncmp(buf, "..", num) == 0)
- return 0;
-
- memcpy(line, buf, (size_t)num);
- line[num] = '\0';
- history(hist, &ev, H_ENTER, buf);
- return num;
-}
-
-/*
- * command handler for interface and bridge modes
- *
- * acts as a loop for human keyboard user, and as a one time command
- * lookup for rcfile -c or -i usage
- *
- * if a function returns to interface() with a 1, interface() will break
- * the user back to command() mode.
- *
- * While this function is active the global ifname buffer contains the
- * name of the interface being configured.
- * Ensure that the ifname buffer gets cleared on exit. This allows nested
- * commands to tell whether a interface/bridge context is active, and which
- * interface/bridge is being configured.
- */
-static int
-interface(int argc, char **argv, char *modhvar)
-{
- int ifs, set = 1;
- char *tmp;
- char *ifunit = NULL;
- struct intlist *i; /* pointer to current command */
- struct ifreq ifr;
-
- if (!modhvar) {
- if (NO_ARG(argv[0])) {
- argv++;
- argc--;
- set = 0;
- }
- if (argc == 3) {
- /*
- * Allow "interface-name interface-number" as some
- * network switches do: interface em 0
- */
- ifunit = argv[2];
- } else if (argc != 2) {
- printf("%% [no] interface <interface name>\n");
- return(0);
- }
- tmp = argv[1];
- } else {
- /* called from cmdrc(), processing config file rules only */
- if (argc == 2 && strcmp(modhvar, argv[1]) == 0) {
- /* do-nothing */
- return(0);
- }
- tmp = modhvar;
- }
-
- if (strlen(tmp) > IFNAMSIZ-1) {
- printf("%% interface name too long\n");
- return(0);
- }
-
- strlcpy(ifname, tmp, IFNAMSIZ);
- if (ifunit) {
- const char *errstr;
- size_t len = strlen(ifname);
- strtonum(ifunit, 0, INT_MAX, &errstr);
- if (errstr) {
- printf("%% interface unit %s is %s\n", ifunit, errstr);
- ifname[0] = '\0';
- return(1);
- }
- if (len > 0 && isdigit((unsigned char)(ifname[len - 1]))) {
- printf("%% interface unit %s is redundant\n", ifunit);
- ifname[0] = '\0';
- return(1);
- }
- strlcat(ifname, ifunit, sizeof(ifname));
- printf("%% Interface name is %s not \"%s %s\"\n",
- ifname, tmp, ifunit);
- }
- strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
-
- ifs = socket(AF_INET, SOCK_DGRAM, 0);
- if (ifs < 0) {
- printf("%% socket failed: %s\n", strerror(errno));
- ifname[0] = '\0';
- return(1);
- }
-
- if (!is_valid_ifname(ifname)) {
- if (set == 0) {
- printf("%% interface %s not found\n", ifname);
- close(ifs);
- return(0);
- }
- if (ioctl(ifs, SIOCIFCREATE, &ifr) == -1) {
- if (errno == EINVAL)
- printf("%% interface %s not found\n", ifname);
- else
- printf("%% unable to create interface %s: %s\n",
- ifname, strerror(errno));
- ifname[0] = '\0';
- close(ifs);
- return(0);
- }
- }
-
- if (set == 0) {
- if (ioctl(ifs, SIOCIFDESTROY, &ifr) == -1) {
- printf("%% unable to remove interface %s: %s\n",
- ifname, strerror(errno));
- } else {
- /* remove interface routes? */
- }
- ifname[0] = '\0';
- close(ifs);
- return(0);
- }
-
- if (is_bridge(ifs, ifname)) {
- /* whichlist also used by help, command completion code */
- whichlist = Bridgelist;
- bridge = 1;
- } else {
- whichlist = Intlist;
- bridge = 0;
- }
-
- imr_init(ifname);
-
- if (modhvar) {
- /* direct rcfile -i or -c initialization */
- char *argp;
-
- if (argc - 1 > NARGS)
- argc = NARGS;
- if (argv[0] == 0) {
- ifname[0] = '\0';
- return(0);
- }
- if (NO_ARG(argv[0]))
- argp = argv[1];
- else
- argp = argv[0];
- i = (struct intlist *) genget(argp, (char **)
- whichlist, sizeof(struct intlist));
- if (Ambiguous(i)) {
- printf("%% Ambiguous command\n");
- } else if (i == 0) {
- printf("%% Invalid command\n");
- } else {
- int save_cli_rtable = cli_rtable;
- cli_rtable = 0;
-
- ((*i->handler) (ifname, ifs, argc, argv));
-
- cli_rtable = save_cli_rtable;
- }
-
- ifname[0] = '\0';
- return(0);
- }
- /* human at the keyboard or commands on stdin */
- for (;;) {
- char *margp;
- if (!editing) {
- /* command line editing disabled */
- if (interactive_mode)
- printf("%s", iprompt());
- if (fgets(line, sizeof(line), stdin) == NULL) {
- if (feof(stdin) || ferror(stdin)) {
- if (interactive_mode)
- printf("\n");
- ifname[0] = '\0';
- close(ifs);
- return(0);
- }
- break;
- }
- if (line[0] == '\0')
- break;
- } else {
- int num;
-
- cursor_pos = NULL;
- num = read_command_line(eli, histi);
- if (num == 0)
- break;
- if (num == -1) {
- printf("%% Input error: %s\n",
- strerror(errno));
- ifname[0] = '\0';
- close(ifs);
- return(1);
- }
- }
-
- makeargv();
- if (margv[0] == 0)
- break;
- if (NO_ARG(margv[0]))
- margp = margv[1];
- else
- margp = margv[0];
- i = (struct intlist *) genget(margp, (char **)
- whichlist, sizeof(struct intlist));
- if (Ambiguous(i)) {
- printf("%% Ambiguous command\n");
- } else if (i == 0) {
- int val = 1;
-
- if (editing)
- val = el_burrito(eli, margc, margv);
- if (val)
- printf("%% Invalid command\n");
- } else {
- int save_cli_rtable = cli_rtable;
- cli_rtable = 0;
-
- if ((*i->handler) (ifname, ifs, margc, margv)) {
- cli_rtable = save_cli_rtable;
- break;
- }
- cli_rtable = save_cli_rtable;
- }
- }
-
- ifname[0] = '\0';
- close(ifs);
- return(0);
-}
-
static int
int_ping(char *ifname, int ifs, int argc, char **argv)
{
