tarcat (since removed), loadkmap, various fixes, Debian maintenance
Vladimir Oleynik <dzo@simtreas.ru>
- cmdedit, stty-port, locale, various fixes
+ cmdedit; ports: ash, stty, traceroute; locale, various fixes
and irreconcilable critic of everything not perfect.
Tim Riker <Tim@Rikers.org>
* None yet
New Applets:
- * None yet
+ * Vladimir Oleynik -- traceroute
Other Changes:
- * Vladimir Oleynik -- Fixed tr to support 'tr a-z A-Z' syntax.
+ * Vladimir Oleynik -- Fixed tr to support 'tr a-z A-Z' syntax,
+ many ash corrections, and others optimizations, and cleanups.
-Not Yet Released
trim.c unzip.c vdprintf.c verror_msg.c vperror_msg.c wfopen.c xfuncs.c \
xgetcwd.c xreadlink.c xregcomp.c interface.c remove_file.c last_char_is.c \
copyfd.c vherror_msg.c herror_msg.c herror_msg_and_die.c xgethostbyname.c \
-dirname.c make_directory.c
+dirname.c make_directory.c create_icmp_socket.c
LIBBB_OBJS=$(patsubst %.c,$(LIBBB)/%.o, $(LIBBB_CSRC))
LIBBB_CFLAGS = -I$(LIBBB)
ifneq ($(strip $(BB_SRC_DIR)),)
LIBBB_MSRC=libbb/messages.c
LIBBB_MESSAGES= full_version name_too_long omitting_directory not_a_directory \
memory_exhausted invalid_date invalid_option io_error dash_dash_help \
-write_error too_few_args name_longer_than_foo unknown
+write_error too_few_args name_longer_than_foo unknown can_not_create_raw_socket
LIBBB_MOBJ=$(patsubst %,$(LIBBB)/%.o, $(LIBBB_MESSAGES))
LIBBB_ARCSRC=libbb/unarchive.c
- mkdir -p $(LIBBB)
$(CC) $(CFLAGS) $(LIBBB_CFLAGS) -DL_$(patsubst libbb/%,%,$*) -c $< -o $*.o
-$(LIBBB_AROBJS): $(LIBBB_ARCSRC) Makefile
+$(LIBBB_AROBJS): $(LIBBB_ARCSRC)
- mkdir -p $(LIBBB)
$(CC) $(CFLAGS) $(LIBBB_CFLAGS) -DL_$(patsubst libbb/%,%,$*) -c $< -o $*.o
* package.
*
* Modified by Erik Andersen <andersee@debian.org> and
- * Vladimir Oleynik <vodz@usa.net> to be used in busybox
+ * Vladimir Oleynik <dzo@simtreas.ru> to be used in busybox
*
*
* Original copyright notice is retained at the end of this file.
if (--in.nleft < 0) {
if (in.fd < 0)
break;
- while ((i = read(in.fd, buf, sizeof buf)) < 0 && errno == EINTR);
+ i = safe_read(in.fd, buf, sizeof buf);
TRACE(("expbackq: read returns %d\n", i));
if (i <= 0)
break;
* interactive shell and control is returned to the main command loop.
*/
-#ifdef ASH_ALIAS
/* 1 == check for aliases, 2 == also check for assignments */
-static int checkalias;
-#endif
+static int checkalias; /* also used in no alias mode for check assignments */
static void
reset(void) {
{
tokpushback = 0;
checkkwd = 0;
-#ifdef ASH_ALIAS
checkalias = 0;
-#endif
}
/* from redir.c: */
*/
#ifdef BB_FEATURE_COMMAND_EDITING
-unsigned int shell_context;
static const char * cmdedit_prompt;
static inline void putprompt(const char *s) {
cmdedit_prompt = s;
retry:
#ifdef BB_FEATURE_COMMAND_EDITING
{
- if (parsefile->fd)
- nr = read(parsefile->fd, buf, BUFSIZ - 1);
+ if (!iflag)
+ nr = safe_read(parsefile->fd, buf, BUFSIZ - 1);
else {
- do {
cmdedit_read_input((char*)cmdedit_prompt, buf);
nr = strlen(buf);
- } while (nr <=0 || shell_context);
- cmdedit_terminate();
}
}
#else
- nr = read(parsefile->fd, buf, BUFSIZ - 1);
+ nr = safe_read(parsefile->fd, buf, BUFSIZ - 1);
#endif
if (nr < 0) {
- if (errno == EINTR)
- goto retry;
if (parsefile->fd == 0 && errno == EWOULDBLOCK) {
int flags = fcntl(0, F_GETFL, 0);
if (flags >= 0 && flags & O_NONBLOCK) {
redir = NULL;
rpp = &redir;
-#ifdef ASH_ALIAS
checkalias = 2;
-#endif
for (;;) {
switch (readtoken()) {
case TWORD:
static int
readtoken() {
int t;
+
#ifdef ASH_ALIAS
- int savecheckkwd = checkkwd;
int savecheckalias = checkalias;
+ int savecheckkwd = checkkwd;
struct alias *ap;
#endif
}
}
-#ifdef ASH_ALIAS
+
if (t != TWORD) {
if (t != TREDIR) {
checkalias = 0;
}
} else if (checkalias == 2 && isassignment(wordtext)) {
lasttoken = t = TASSIGN;
+#ifdef ASH_ALIAS
} else if (checkalias) {
if (!quoteflag && (ap = lookupalias(wordtext, 1)) != NULL) {
if (*ap->val) {
goto top;
}
checkalias = 0;
- }
#endif
+ }
out:
#ifdef DEBUG
if (!alreadyseen)
/*
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
* This file contains code for the times builtin.
- * $Id: ash.c,v 1.9 2001/07/10 16:57:09 andersen Exp $
+ * $Id: ash.c,v 1.10 2001/07/12 20:26:31 andersen Exp $
*/
static int timescmd (int argc, char **argv)
{
* Termios command line History and Editting.
*
* Copyright (c) 1986-2001 may safely be consumed by a BSD or GPL license.
- * Written by: Vladimir Oleynik <vodz@usa.net>
+ * Written by: Vladimir Oleynik <dzo@simtreas.ru>
*
* Used ideas:
* Adam Rogoyski <rogoyski@cs.utexas.edu>
enum {
SET_ATEXIT = 1, /* when atexit() has been called
and get euid,uid,gid to fast compare */
- SET_TERM_HANDLERS = 2, /* set many terminates signal handlers */
- SET_WCHG_HANDLERS = 4, /* winchg signal handler */
- SET_RESET_TERM = 8, /* if the terminal needs to be reset upon exit */
+ SET_WCHG_HANDLERS = 2, /* winchg signal handler */
+ SET_RESET_TERM = 4, /* if the terminal needs to be reset upon exit */
};
#endif
char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */
-/* Link into lash to reset context to 0 on ^C and such */
-extern unsigned int shell_context;
-
-
#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR
static char *user_buf = "";
static char *home_pwd_buf = "";
out1str(cmdedit_prompt);
cmdedit_x = cmdedit_prmt_len; /* count real x terminal position */
cursor = 0;
+ cmdedit_y = 0; /* new quasireal y */
}
#ifndef BB_FEATURE_SH_FANCY_PROMPT
{
if (y > 0) /* up to start y */
printf("\033[%dA", y);
- cmdedit_y = 0; /* new quasireal y */
putchar('\r');
put_prompt();
input_end(); /* rewrite */
}
-static void clean_up_and_die(int sig)
-{
- goto_new_line();
- if (sig != SIGINT)
- exit(EXIT_SUCCESS); /* cmdedit_reset_term() called in atexit */
- cmdedit_reset_term();
-}
-
static void cmdedit_setwidth(int w, int redraw_flg)
{
cmdedit_termw = cmdedit_prmt_len + 2;
}
}
-extern void cmdedit_init(void)
+static void cmdedit_init(void)
{
cmdedit_prmt_len = 0;
if ((handlers_sets & SET_WCHG_HANDLERS) == 0) {
handlers_sets |= SET_ATEXIT;
atexit(cmdedit_reset_term); /* be sure to do this only once */
}
-
- if ((handlers_sets & SET_TERM_HANDLERS) == 0) {
- signal(SIGKILL, clean_up_and_die);
- signal(SIGINT, clean_up_and_die);
- signal(SIGQUIT, clean_up_and_die);
- signal(SIGTERM, clean_up_and_die);
- handlers_sets |= SET_TERM_HANDLERS;
- }
}
#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
fflush(stdout); /* buffered out to fast */
- if (read(0, &c, 1) < 1)
+ if (safe_read(0, &c, 1) < 1)
/* if we can't read input then exit */
goto prepare_to_die;
break;
case 3:
/* Control-c -- stop gathering input */
-
- /* Link into lash to reset context to 0 on ^C and such */
- shell_context = 0;
-
- /* Go to the next line */
goto_new_line();
command[0] = 0;
-
- return;
+ len = 0;
+ lastWasTab = FALSE;
+ put_prompt();
+ break;
case 4:
/* Control-d -- Delete one character, or exit
* if the len=0 and no chars to delete */
if (len == 0) {
prepare_to_die:
printf("exit");
- clean_up_and_die(0);
+ goto_new_line();
+ /* cmdedit_reset_term() called in atexit */
+ exit(EXIT_SUCCESS);
} else {
input_delete();
}
case ESC:{
/* escape sequence follows */
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
/* different vt100 emulations */
if (c == '[' || c == 'O') {
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
}
switch (c) {
#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
}
if (c >= '1' && c <= '9')
do
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
while (c != '~');
break;
}
#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
/* Control-V -- Add non-printable symbol */
if (c == 22) {
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
if (c == 0) {
beep();
break;
#if defined(BB_FEATURE_SH_FANCY_PROMPT)
free(cmdedit_prompt);
#endif
- return;
+ cmdedit_reset_term();
}
-/* Undo the effects of cmdedit_init(). */
-extern void cmdedit_terminate(void)
-{
- cmdedit_reset_term();
- if ((handlers_sets & SET_TERM_HANDLERS) != 0) {
- signal(SIGKILL, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGQUIT, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGWINCH, SIG_DFL);
- handlers_sets &= ~SET_TERM_HANDLERS;
- }
-}
#endif /* BB_FEATURE_COMMAND_EDITING */
#include <locale.h>
#endif
-unsigned int shell_context;
-
int main(int argc, char **argv)
{
char buff[BUFSIZ];
#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
setlocale(LC_ALL, "");
#endif
- shell_context = 1;
- do {
+ while(1) {
int l;
cmdedit_read_input(prompt, buff);
l = strlen(buff);
+ if(l==0)
+ break;
if(l > 0 && buff[l-1] == '\n')
buff[l-1] = 0;
printf("*** cmdedit_read_input() returned line =%s=\n", buff);
- } while (shell_context);
+ }
printf("*** cmdedit_read_input() detect ^C\n");
return 0;
}
#ifndef CMDEDIT_H
#define CMDEDIT_H
-void cmdedit_init(void);
-void cmdedit_terminate(void);
void cmdedit_read_input(char* promptStr, char* command); /* read a line of input */
#endif /* CMDEDIT_H */
have_read_stdin = 1;
fp = stdin;
} else {
- fp = fopen(filename, "r");
- if (fp == NULL) {
- perror_msg("%s", filename);
+ fp = wfopen(filename, "r");
+ if (fp == NULL)
return FALSE;
}
- }
if (md5_stream(fp, md5_result)) {
perror_msg("%s", filename);
have_read_stdin = 1;
checkfile_stream = stdin;
} else {
- checkfile_stream = fopen(checkfile_name, "r");
- if (checkfile_stream == NULL) {
- perror_msg("%s", checkfile_name);
+ checkfile_stream = wfopen(checkfile_name, "r");
+ if (checkfile_stream == NULL)
return FALSE;
}
- }
line_number = 0;
David MacKenzie <djm@gnu.ai.mit.edu>
- Special for busybox ported by Vladimir Oleynik <vodz@usa.net> 2001
+ Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
*/
unsigned int last_return_code;
extern char **environ; /* This is in <unistd.h>, but protected with __USE_GNU */
-/* Variables we export */
-unsigned int shell_context; /* Used in cmdedit.c to reset the
- * context when someone hits ^C */
-
/* "globals" within this file */
static char *ifs;
static char map[256];
** child processes (rob@sysgo.de)
*/
cmdedit_read_input(prompt_str, the_command);
- cmdedit_terminate();
#else
fputs(prompt_str, stdout);
fflush(stdout);
/* Set the handling for job control signals back to the default. */
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGTTIN, SIG_DFL);
signal(SIGTTOU, SIG_DFL);
/* Ignore interactive and job-control signals. */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
+ signal(SIGTERM, SIG_IGN);
signal(SIGTSTP, SIG_IGN);
signal(SIGTTIN, SIG_IGN);
signal(SIGTTOU, SIG_IGN);
extern FILE *gz_open(FILE *compressed_file, int *pid);
extern struct hostent *xgethostbyname(const char *name);
+extern int create_icmp_socket(void);
char *dirname (const char *path);
extern const char * const too_few_args;
extern const char * const name_longer_than_foo;
extern const char * const unknown;
+extern const char * const can_not_create_raw_socket;
#endif /* __LIBBB_H__ */
};
-/* Variables we export */
-unsigned int shell_context; /* Used in cmdedit.c to reset the
- context when someone hits ^C */
+static int shell_context; /* Type prompt trigger (PS1 or PS2) */
/* Globals that are static to this file */
** child processes (rob@sysgo.de)
*/
cmdedit_read_input(prompt_str, command);
- cmdedit_terminate();
return 0;
#else
fputs(prompt_str, stdout);
/* These variables need re-initializing when recursing */
last_jobid = 0;
- shell_context = 0;
local_pending_command = NULL;
close_me_head = NULL;
job_list.head = NULL;
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * create raw socket for icmp protocol test permision
+ * and drop root privilegies if running setuid
+ *
+ */
+
+#include <sys/types.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <errno.h>
+#include <unistd.h>
+#include "libbb.h"
+
+int create_icmp_socket(void)
+{
+ struct protoent *proto;
+ int sock;
+
+ proto = getprotobyname("icmp");
+ /* if getprotobyname failed, just silently force
+ * proto->p_proto to have the correct value for "icmp" */
+ if ((sock = socket(AF_INET, SOCK_RAW,
+ (proto ? proto->p_proto : 1))) < 0) { /* 1 == ICMP */
+ if (errno == EPERM)
+ error_msg_and_die("permission denied. (are you root?)");
+ else
+ perror_msg_and_die(can_not_create_raw_socket);
+ }
+
+ /* drop root privs if running setuid */
+ setuid(getuid());
+
+ return sock;
+}
extern FILE *gz_open(FILE *compressed_file, int *pid);
extern struct hostent *xgethostbyname(const char *name);
+extern int create_icmp_socket(void);
char *dirname (const char *path);
extern const char * const too_few_args;
extern const char * const name_longer_than_foo;
extern const char * const unknown;
+extern const char * const can_not_create_raw_socket;
#endif /* __LIBBB_H__ */
const char * const unknown = "(unknown)";
#endif
+#ifdef L_can_not_create_raw_socket
+ const char * const can_not_create_raw_socket = "can`t create raw socket";
+#endif
have_read_stdin = 1;
fp = stdin;
} else {
- fp = fopen(filename, "r");
- if (fp == NULL) {
- perror_msg("%s", filename);
+ fp = wfopen(filename, "r");
+ if (fp == NULL)
return FALSE;
}
- }
if (md5_stream(fp, md5_result)) {
perror_msg("%s", filename);
have_read_stdin = 1;
checkfile_stream = stdin;
} else {
- checkfile_stream = fopen(checkfile_name, "r");
- if (checkfile_stream == NULL) {
- perror_msg("%s", checkfile_name);
+ checkfile_stream = wfopen(checkfile_name, "r");
+ if (checkfile_stream == NULL)
return FALSE;
}
- }
line_number = 0;
#ifdef BB_FEATURE_COMMAND_EDITING
-char * current_prompt;
-unsigned int shell_context;
+static char * current_prompt;
#endif
if ((i = ap->afid != bp->id) || bp->bufp == bp->ebufp) {
if (i)
lseek(ap->afile, ap->afpos, 0);
- do {
- i = read(ap->afile, bp->buf, sizeof(bp->buf));
- } while (i < 0 && errno == EINTR);
+ i = safe_read(ap->afile, bp->buf, sizeof(bp->buf));
if (i <= 0) {
closef(ap->afile);
return 0;
while (size == 0 || position >= size) {
cmdedit_read_input(current_prompt, mycommand);
- cmdedit_terminate();
size = strlen(mycommand);
position = 0;
}
} else
#endif
{
- do {
- i = read(ap->afile, &c, sizeof(c));
- } while (i < 0 && errno == EINTR);
+ i = safe_read(ap->afile, &c, sizeof(c));
return(i == sizeof(c)? c&0177: (closef(ap->afile), 0));
}
}
/* vi: set sw=4 ts=4: */
/*
- * $Id: ping.c,v 1.43 2001/05/21 20:30:51 andersen Exp $
+ * $Id: ping.c,v 1.44 2001/07/12 20:26:31 andersen Exp $
* Mini ping implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
int pingsock, c;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
- if ((pingsock = socket(AF_INET, SOCK_RAW, 1)) < 0) /* 1 == ICMP */
- perror_msg_and_die("creating a raw socket");
-
- /* drop root privs if running setuid */
- setuid(getuid());
+ pingsock = create_raw_socket();
memset(&pingaddr, 0, sizeof(struct sockaddr_in));
if (errno == EPERM)
error_msg_and_die("permission denied. (are you root?)");
else
- perror_msg_and_die("creating a raw socket");
+ perror_msg_and_die(can_not_create_raw_socket);
}
/* drop root privs if running setuid */
* This code is derived from software contributed to Berkeley by
* Van Jacobson.
*
+ * Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Tue Dec 20 03:50:13 PST 1988
*/
+#undef BB_FEATURE_TRACEROUTE_VERBOSE
+//#define BB_FEATURE_TRACEROUTE_VERBOSE
+#undef BB_FEATURE_TRACEROUTE_SO_DEBUG /* not in documentation man */
+
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include "busybox.h"
-static int wait_for_reply (int, struct sockaddr_in *, int);
-static void send_probe (int, int);
-static double deltaT (struct timeval *, struct timeval *);
-static int packet_ok (u_char *, int, struct sockaddr_in *, int);
-static void print (u_char *, int, struct sockaddr_in *);
-static char *inetname (struct in_addr);
-
static u_char packet[512]; /* last inbound (icmp) packet */
static struct opacket *outpacket; /* last output (udp) packet */
static u_short ident;
static u_short port = 32768+666; /* start udp dest port # for probe packets */
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
static int verbose;
+#endif
static int waittime = 5; /* time to wait for response (in seconds) */
static int nflag; /* print addresses numerically */
+/*
+ * Construct an Internet address representation.
+ * If the nflag has been supplied, give
+ * numeric value, otherwise try for symbolic name.
+ */
+static inline char *
+inetname(struct in_addr in)
+{
+ char *cp;
+ static char line[50];
+ struct hostent *hp;
+ static char domain[MAXHOSTNAMELEN + 1];
+ static int first = 1;
+
+ if (first && !nflag) {
+ first = 0;
+ if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
+ (cp = index(domain, '.')))
+ (void) strcpy(domain, cp + 1);
+ else
+ domain[0] = 0;
+ }
+ cp = 0;
+ if (!nflag && in.s_addr != INADDR_ANY) {
+ hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
+ if (hp) {
+ if ((cp = index(hp->h_name, '.')) &&
+ !strcmp(cp + 1, domain))
+ *cp = 0;
+ cp = (char *)hp->h_name;
+ }
+ }
+ if (cp)
+ (void) strcpy(line, cp);
+ else {
+ in.s_addr = ntohl(in.s_addr);
+ strcpy(line, inet_ntoa(in));
+ }
+ return (line);
+}
+
+static inline void
+print(u_char *buf, int cc, struct sockaddr_in *from)
+{
+ struct ip *ip;
+ int hlen;
+
+ ip = (struct ip *) buf;
+ hlen = ip->ip_hl << 2;
+ cc -= hlen;
+
+ if (nflag)
+ printf(" %s", inet_ntoa(from->sin_addr));
+ else
+ printf(" %s (%s)", inetname(from->sin_addr),
+ inet_ntoa(from->sin_addr));
+
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+ if (verbose)
+ printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
+#endif
+}
+
+static inline double
+deltaT(struct timeval *t1p, struct timeval *t2p)
+{
+ double dt;
+
+ dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
+ (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
+ return (dt);
+}
+
+static inline int
+wait_for_reply(int sock, struct sockaddr_in *from, int reset_timer)
+{
+ fd_set fds;
+ static struct timeval wait;
+ int cc = 0;
+ int fromlen = sizeof (*from);
+
+ FD_ZERO(&fds);
+ FD_SET(sock, &fds);
+ if (reset_timer) {
+ /*
+ * traceroute could hang if someone else has a ping
+ * running and our ICMP reply gets dropped but we don't
+ * realize it because we keep waking up to handle those
+ * other ICMP packets that keep coming in. To fix this,
+ * "reset_timer" will only be true if the last packet that
+ * came in was for us or if this is the first time we're
+ * waiting for a reply since sending out a probe. Note
+ * that this takes advantage of the select() feature on
+ * Linux where the remaining timeout is written to the
+ * struct timeval area.
+ */
+ wait.tv_sec = waittime;
+ wait.tv_usec = 0;
+ }
+
+ if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
+ cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
+ (struct sockaddr *)from, &fromlen);
+
+ return(cc);
+}
+
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+/*
+ * Convert an ICMP "type" field to a printable string.
+ */
+static inline const char *
+pr_type(t)
+ u_char t;
+{
+ static const char * const ttab[] = {
+ "Echo Reply", "ICMP 1", "ICMP 2", "Dest Unreachable",
+ "Source Quench", "Redirect", "ICMP 6", "ICMP 7",
+ "Echo", "ICMP 9", "ICMP 10", "Time Exceeded",
+ "Param Problem", "Timestamp", "Timestamp Reply", "Info Request",
+ "Info Reply"
+ };
+
+ if(t > 16)
+ return("OUT-OF-RANGE");
+
+ return(ttab[t]);
+}
+#endif
+
+static inline int
+packet_ok(u_char *buf, int cc, struct sockaddr_in *from, int seq)
+{
+ struct icmp *icp;
+ u_char type, code;
+ int hlen;
+ struct ip *ip;
+
+ ip = (struct ip *) buf;
+ hlen = ip->ip_hl << 2;
+ if (cc < hlen + ICMP_MINLEN) {
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+ if (verbose)
+ printf("packet too short (%d bytes) from %s\n", cc,
+ inet_ntoa(from->sin_addr));
+#endif
+ return (0);
+ }
+ cc -= hlen;
+ icp = (struct icmp *)(buf + hlen);
+ type = icp->icmp_type; code = icp->icmp_code;
+ if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
+ type == ICMP_UNREACH) {
+ struct ip *hip;
+ struct udphdr *up;
+
+ hip = &icp->icmp_ip;
+ hlen = hip->ip_hl << 2;
+ up = (struct udphdr *)((u_char *)hip + hlen);
+ if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
+ up->source == htons(ident) &&
+ up->dest == htons(port+seq))
+ return (type == ICMP_TIMXCEED? -1 : code+1);
+ }
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+ if (verbose) {
+ int i;
+ u_long *lp = (u_long *)&icp->icmp_ip;
+
+ printf("\n%d bytes from %s to %s: icmp type %d (%s) code %d\n",
+ cc, inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst),
+ type, pr_type(type), icp->icmp_code);
+ for (i = 4; i < cc ; i += sizeof(long))
+ printf("%2d: x%8.8lx\n", i, *lp++);
+ }
+#endif
+ return(0);
+}
+
+static void /* not inline */
+send_probe(int seq, int ttl)
+{
+ struct opacket *op = outpacket;
+ struct ip *ip = &op->ip;
+ struct udphdr *up = &op->udp;
+ int i;
+ struct timezone tz;
+
+ ip->ip_off = 0;
+ ip->ip_hl = sizeof(*ip) >> 2;
+ ip->ip_p = IPPROTO_UDP;
+ ip->ip_len = datalen;
+ ip->ip_ttl = ttl;
+ ip->ip_v = IPVERSION;
+ ip->ip_id = htons(ident+seq);
+
+ up->source = htons(ident);
+ up->dest = htons(port+seq);
+ up->len = htons((u_short)(datalen - sizeof(struct ip)));
+ up->check = 0;
+
+ op->seq = seq;
+ op->ttl = ttl;
+ (void) gettimeofday(&op->tv, &tz);
+
+ i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
+ sizeof(struct sockaddr));
+ if (i < 0 || i != datalen) {
+ if (i<0)
+ perror("sendto");
+ printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
+ datalen, i);
+ (void) fflush(stdout);
+ }
+}
+
+
int
#ifndef BB_TRACEROUTE
main(argc, argv)
extern char *optarg;
extern int optind;
struct hostent *hp;
- struct protoent *pe;
struct sockaddr_in from, *to;
int ch, i, on, probe, seq, tos, ttl;
while ((ch = getopt(argc, argv, "dm:np:q:rs:t:w:v")) != EOF)
switch(ch) {
case 'd':
+#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
options |= SO_DEBUG;
+#endif
break;
case 'm':
max_ttl = atoi(optarg);
error_msg_and_die("tos must be 0 to 255.");
break;
case 'v':
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
verbose++;
+#endif
break;
case 'w':
waittime = atoi(optarg);
setlinebuf (stdout);
- (void) bzero((char *)&whereto, sizeof(struct sockaddr));
- to->sin_family = AF_INET;
- to->sin_addr.s_addr = inet_addr(*argv);
- if (to->sin_addr.s_addr != -1)
- hostname = *argv;
- else {
- hp = gethostbyname(*argv);
- if (hp) {
+ memset(&whereto, 0, sizeof(struct sockaddr));
+ hp = xgethostbyname(*argv);
to->sin_family = hp->h_addrtype;
- bcopy(hp->h_addr, (caddr_t)&to->sin_addr, hp->h_length);
+ memcpy(&to->sin_addr, hp->h_addr, hp->h_length);
hostname = (char *)hp->h_name;
- } else {
- error_msg_and_die("unknown host %s", *argv);
- }
- }
if (*++argv)
datalen = atoi(*argv);
if (datalen < 0 || datalen >= MAXPACKET - sizeof(struct opacket))
MAXPACKET - sizeof(struct opacket));
datalen += sizeof(struct opacket);
outpacket = (struct opacket *)xmalloc((unsigned)datalen);
- (void) bzero((char *)outpacket, datalen);
+ memset(outpacket, 0, datalen);
outpacket->ip.ip_dst = to->sin_addr;
outpacket->ip.ip_tos = tos;
outpacket->ip.ip_v = IPVERSION;
ident = (getpid() & 0xffff) | 0x8000;
- if ((pe = getprotobyname("icmp")) == NULL)
- error_msg_and_die("icmp: unknown protocol");
- if ((s = socket(AF_INET, SOCK_RAW, pe->p_proto)) < 0)
- perror_msg_and_die("icmp socket");
+ if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
+ perror_msg_and_die(can_not_create_raw_socket);
+
+ s = create_icmp_socket();
+
+#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
if (options & SO_DEBUG)
(void) setsockopt(s, SOL_SOCKET, SO_DEBUG,
(char *)&on, sizeof(on));
+#endif
if (options & SO_DONTROUTE)
(void) setsockopt(s, SOL_SOCKET, SO_DONTROUTE,
(char *)&on, sizeof(on));
-
- if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
- perror_msg_and_die("raw socket");
#ifdef SO_SNDBUF
if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
sizeof(datalen)) < 0)
sizeof(on)) < 0)
perror_msg_and_die("IP_HDRINCL");
#endif IP_HDRINCL
+#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
if (options & SO_DEBUG)
(void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
(char *)&on, sizeof(on));
+#endif
if (options & SO_DONTROUTE)
(void) setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE,
(char *)&on, sizeof(on));
if (source) {
- (void) bzero((char *)&from, sizeof(struct sockaddr));
+ memset(&from, 0, sizeof(struct sockaddr));
from.sin_family = AF_INET;
from.sin_addr.s_addr = inet_addr(source);
if (from.sin_addr.s_addr == -1)
if (source)
fprintf(stderr, " from %s", source);
fprintf(stderr, ", %d hops max, %d byte packets\n", max_ttl, datalen);
- (void) fflush(stderr);
for (ttl = 1; ttl <= max_ttl; ++ttl) {
u_long lastaddr = 0;
printf(" %g ms", deltaT(&t1, &t2));
switch(i - 1) {
case ICMP_UNREACH_PORT:
-#ifndef ARCHAIC
ip = (struct ip *)packet;
if (ip->ip_ttl <= 1)
printf(" !");
-#endif ARCHAIC
++got_there;
break;
case ICMP_UNREACH_NET:
return 0;
}
-
-static int
-wait_for_reply(sock, from, reset_timer)
- int sock;
- struct sockaddr_in *from;
- int reset_timer;
-{
- fd_set fds;
- static struct timeval wait;
- int cc = 0;
- int fromlen = sizeof (*from);
-
- FD_ZERO(&fds);
- FD_SET(sock, &fds);
- if (reset_timer) {
- /*
- * traceroute could hang if someone else has a ping
- * running and our ICMP reply gets dropped but we don't
- * realize it because we keep waking up to handle those
- * other ICMP packets that keep coming in. To fix this,
- * "reset_timer" will only be true if the last packet that
- * came in was for us or if this is the first time we're
- * waiting for a reply since sending out a probe. Note
- * that this takes advantage of the select() feature on
- * Linux where the remaining timeout is written to the
- * struct timeval area.
- */
- wait.tv_sec = waittime;
- wait.tv_usec = 0;
- }
-
- if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
- cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
- (struct sockaddr *)from, &fromlen);
-
- return(cc);
-}
-
-
-static void
-send_probe(seq, ttl)
- int seq, ttl;
-{
- struct opacket *op = outpacket;
- struct ip *ip = &op->ip;
- struct udphdr *up = &op->udp;
- int i;
- struct timezone tz;
-
- ip->ip_off = 0;
- ip->ip_hl = sizeof(*ip) >> 2;
- ip->ip_p = IPPROTO_UDP;
- ip->ip_len = datalen;
- ip->ip_ttl = ttl;
- ip->ip_v = IPVERSION;
- ip->ip_id = htons(ident+seq);
-
- up->source = htons(ident);
- up->dest = htons(port+seq);
- up->len = htons((u_short)(datalen - sizeof(struct ip)));
- up->check = 0;
-
- op->seq = seq;
- op->ttl = ttl;
- (void) gettimeofday(&op->tv, &tz);
-
- i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
- sizeof(struct sockaddr));
- if (i < 0 || i != datalen) {
- if (i<0)
- perror("sendto");
- printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
- datalen, i);
- (void) fflush(stdout);
- }
-}
-
-
-static double
-deltaT(t1p, t2p)
- struct timeval *t1p, *t2p;
-{
- register double dt;
-
- dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
- (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
- return (dt);
-}
-
-
-/*
- * Convert an ICMP "type" field to a printable string.
- */
-static const char *
-pr_type(t)
- u_char t;
-{
- static const char * const ttab[] = {
- "Echo Reply", "ICMP 1", "ICMP 2", "Dest Unreachable",
- "Source Quench", "Redirect", "ICMP 6", "ICMP 7",
- "Echo", "ICMP 9", "ICMP 10", "Time Exceeded",
- "Param Problem", "Timestamp", "Timestamp Reply", "Info Request",
- "Info Reply"
- };
-
- if(t > 16)
- return("OUT-OF-RANGE");
-
- return(ttab[t]);
-}
-
-
-static int
-packet_ok(buf, cc, from, seq)
- u_char *buf;
- int cc;
- struct sockaddr_in *from;
- int seq;
-{
- register struct icmp *icp;
- u_char type, code;
- int hlen;
-#ifndef ARCHAIC
- struct ip *ip;
-
- ip = (struct ip *) buf;
- hlen = ip->ip_hl << 2;
- if (cc < hlen + ICMP_MINLEN) {
- if (verbose)
- printf("packet too short (%d bytes) from %s\n", cc,
- inet_ntoa(from->sin_addr));
- return (0);
- }
- cc -= hlen;
- icp = (struct icmp *)(buf + hlen);
-#else
- icp = (struct icmp *)buf;
-#endif ARCHAIC
- type = icp->icmp_type; code = icp->icmp_code;
- if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
- type == ICMP_UNREACH) {
- struct ip *hip;
- struct udphdr *up;
-
- hip = &icp->icmp_ip;
- hlen = hip->ip_hl << 2;
- up = (struct udphdr *)((u_char *)hip + hlen);
- if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
- up->source == htons(ident) &&
- up->dest == htons(port+seq))
- return (type == ICMP_TIMXCEED? -1 : code+1);
- }
-#ifndef ARCHAIC
- if (verbose) {
- int i;
- u_long *lp = (u_long *)&icp->icmp_ip;
-
- printf("\n%d bytes from %s to %s", cc,
- inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst));
- printf(": icmp type %d (%s) code %d\n", type, pr_type(type),
- icp->icmp_code);
- for (i = 4; i < cc ; i += sizeof(long))
- printf("%2d: x%8.8lx\n", i, *lp++);
- }
-#endif ARCHAIC
- return(0);
-}
-
-
-static void
-print(buf, cc, from)
- u_char *buf;
- int cc;
- struct sockaddr_in *from;
-{
- struct ip *ip;
- int hlen;
-
- ip = (struct ip *) buf;
- hlen = ip->ip_hl << 2;
- cc -= hlen;
-
- if (nflag)
- printf(" %s", inet_ntoa(from->sin_addr));
- else
- printf(" %s (%s)", inetname(from->sin_addr),
- inet_ntoa(from->sin_addr));
-
- if (verbose)
- printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
-}
-
-
-/*
- * Construct an Internet address representation.
- * If the nflag has been supplied, give
- * numeric value, otherwise try for symbolic name.
- */
-static char *
-inetname(in)
- struct in_addr in;
-{
- register char *cp;
- static char line[50];
- struct hostent *hp;
- static char domain[MAXHOSTNAMELEN + 1];
- static int first = 1;
-
- if (first && !nflag) {
- first = 0;
- if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
- (cp = index(domain, '.')))
- (void) strcpy(domain, cp + 1);
- else
- domain[0] = 0;
- }
- cp = 0;
- if (!nflag && in.s_addr != INADDR_ANY) {
- hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
- if (hp) {
- if ((cp = index(hp->h_name, '.')) &&
- !strcmp(cp + 1, domain))
- *cp = 0;
- cp = (char *)hp->h_name;
- }
- }
- if (cp)
- (void) strcpy(line, cp);
- else {
- in.s_addr = ntohl(in.s_addr);
-#define C(x) ((x) & 0xff)
- sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
- C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
- }
- return (line);
-}
/* vi: set sw=4 ts=4: */
/*
- * $Id: ping.c,v 1.43 2001/05/21 20:30:51 andersen Exp $
+ * $Id: ping.c,v 1.44 2001/07/12 20:26:31 andersen Exp $
* Mini ping implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
int pingsock, c;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
- if ((pingsock = socket(AF_INET, SOCK_RAW, 1)) < 0) /* 1 == ICMP */
- perror_msg_and_die("creating a raw socket");
-
- /* drop root privs if running setuid */
- setuid(getuid());
+ pingsock = create_raw_socket();
memset(&pingaddr, 0, sizeof(struct sockaddr_in));
if (errno == EPERM)
error_msg_and_die("permission denied. (are you root?)");
else
- perror_msg_and_die("creating a raw socket");
+ perror_msg_and_die(can_not_create_raw_socket);
}
/* drop root privs if running setuid */
* package.
*
* Modified by Erik Andersen <andersee@debian.org> and
- * Vladimir Oleynik <vodz@usa.net> to be used in busybox
+ * Vladimir Oleynik <dzo@simtreas.ru> to be used in busybox
*
*
* Original copyright notice is retained at the end of this file.
if (--in.nleft < 0) {
if (in.fd < 0)
break;
- while ((i = read(in.fd, buf, sizeof buf)) < 0 && errno == EINTR);
+ i = safe_read(in.fd, buf, sizeof buf);
TRACE(("expbackq: read returns %d\n", i));
if (i <= 0)
break;
* interactive shell and control is returned to the main command loop.
*/
-#ifdef ASH_ALIAS
/* 1 == check for aliases, 2 == also check for assignments */
-static int checkalias;
-#endif
+static int checkalias; /* also used in no alias mode for check assignments */
static void
reset(void) {
{
tokpushback = 0;
checkkwd = 0;
-#ifdef ASH_ALIAS
checkalias = 0;
-#endif
}
/* from redir.c: */
*/
#ifdef BB_FEATURE_COMMAND_EDITING
-unsigned int shell_context;
static const char * cmdedit_prompt;
static inline void putprompt(const char *s) {
cmdedit_prompt = s;
retry:
#ifdef BB_FEATURE_COMMAND_EDITING
{
- if (parsefile->fd)
- nr = read(parsefile->fd, buf, BUFSIZ - 1);
+ if (!iflag)
+ nr = safe_read(parsefile->fd, buf, BUFSIZ - 1);
else {
- do {
cmdedit_read_input((char*)cmdedit_prompt, buf);
nr = strlen(buf);
- } while (nr <=0 || shell_context);
- cmdedit_terminate();
}
}
#else
- nr = read(parsefile->fd, buf, BUFSIZ - 1);
+ nr = safe_read(parsefile->fd, buf, BUFSIZ - 1);
#endif
if (nr < 0) {
- if (errno == EINTR)
- goto retry;
if (parsefile->fd == 0 && errno == EWOULDBLOCK) {
int flags = fcntl(0, F_GETFL, 0);
if (flags >= 0 && flags & O_NONBLOCK) {
redir = NULL;
rpp = &redir;
-#ifdef ASH_ALIAS
checkalias = 2;
-#endif
for (;;) {
switch (readtoken()) {
case TWORD:
static int
readtoken() {
int t;
+
#ifdef ASH_ALIAS
- int savecheckkwd = checkkwd;
int savecheckalias = checkalias;
+ int savecheckkwd = checkkwd;
struct alias *ap;
#endif
}
}
-#ifdef ASH_ALIAS
+
if (t != TWORD) {
if (t != TREDIR) {
checkalias = 0;
}
} else if (checkalias == 2 && isassignment(wordtext)) {
lasttoken = t = TASSIGN;
+#ifdef ASH_ALIAS
} else if (checkalias) {
if (!quoteflag && (ap = lookupalias(wordtext, 1)) != NULL) {
if (*ap->val) {
goto top;
}
checkalias = 0;
- }
#endif
+ }
out:
#ifdef DEBUG
if (!alreadyseen)
/*
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
* This file contains code for the times builtin.
- * $Id: ash.c,v 1.9 2001/07/10 16:57:09 andersen Exp $
+ * $Id: ash.c,v 1.10 2001/07/12 20:26:31 andersen Exp $
*/
static int timescmd (int argc, char **argv)
{
* Termios command line History and Editting.
*
* Copyright (c) 1986-2001 may safely be consumed by a BSD or GPL license.
- * Written by: Vladimir Oleynik <vodz@usa.net>
+ * Written by: Vladimir Oleynik <dzo@simtreas.ru>
*
* Used ideas:
* Adam Rogoyski <rogoyski@cs.utexas.edu>
enum {
SET_ATEXIT = 1, /* when atexit() has been called
and get euid,uid,gid to fast compare */
- SET_TERM_HANDLERS = 2, /* set many terminates signal handlers */
- SET_WCHG_HANDLERS = 4, /* winchg signal handler */
- SET_RESET_TERM = 8, /* if the terminal needs to be reset upon exit */
+ SET_WCHG_HANDLERS = 2, /* winchg signal handler */
+ SET_RESET_TERM = 4, /* if the terminal needs to be reset upon exit */
};
#endif
char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */
-/* Link into lash to reset context to 0 on ^C and such */
-extern unsigned int shell_context;
-
-
#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR
static char *user_buf = "";
static char *home_pwd_buf = "";
out1str(cmdedit_prompt);
cmdedit_x = cmdedit_prmt_len; /* count real x terminal position */
cursor = 0;
+ cmdedit_y = 0; /* new quasireal y */
}
#ifndef BB_FEATURE_SH_FANCY_PROMPT
{
if (y > 0) /* up to start y */
printf("\033[%dA", y);
- cmdedit_y = 0; /* new quasireal y */
putchar('\r');
put_prompt();
input_end(); /* rewrite */
}
-static void clean_up_and_die(int sig)
-{
- goto_new_line();
- if (sig != SIGINT)
- exit(EXIT_SUCCESS); /* cmdedit_reset_term() called in atexit */
- cmdedit_reset_term();
-}
-
static void cmdedit_setwidth(int w, int redraw_flg)
{
cmdedit_termw = cmdedit_prmt_len + 2;
}
}
-extern void cmdedit_init(void)
+static void cmdedit_init(void)
{
cmdedit_prmt_len = 0;
if ((handlers_sets & SET_WCHG_HANDLERS) == 0) {
handlers_sets |= SET_ATEXIT;
atexit(cmdedit_reset_term); /* be sure to do this only once */
}
-
- if ((handlers_sets & SET_TERM_HANDLERS) == 0) {
- signal(SIGKILL, clean_up_and_die);
- signal(SIGINT, clean_up_and_die);
- signal(SIGQUIT, clean_up_and_die);
- signal(SIGTERM, clean_up_and_die);
- handlers_sets |= SET_TERM_HANDLERS;
- }
}
#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
fflush(stdout); /* buffered out to fast */
- if (read(0, &c, 1) < 1)
+ if (safe_read(0, &c, 1) < 1)
/* if we can't read input then exit */
goto prepare_to_die;
break;
case 3:
/* Control-c -- stop gathering input */
-
- /* Link into lash to reset context to 0 on ^C and such */
- shell_context = 0;
-
- /* Go to the next line */
goto_new_line();
command[0] = 0;
-
- return;
+ len = 0;
+ lastWasTab = FALSE;
+ put_prompt();
+ break;
case 4:
/* Control-d -- Delete one character, or exit
* if the len=0 and no chars to delete */
if (len == 0) {
prepare_to_die:
printf("exit");
- clean_up_and_die(0);
+ goto_new_line();
+ /* cmdedit_reset_term() called in atexit */
+ exit(EXIT_SUCCESS);
} else {
input_delete();
}
case ESC:{
/* escape sequence follows */
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
/* different vt100 emulations */
if (c == '[' || c == 'O') {
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
}
switch (c) {
#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
}
if (c >= '1' && c <= '9')
do
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
while (c != '~');
break;
}
#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
/* Control-V -- Add non-printable symbol */
if (c == 22) {
- if (read(0, &c, 1) < 1)
- return;
+ if (safe_read(0, &c, 1) < 1)
+ goto prepare_to_die;
if (c == 0) {
beep();
break;
#if defined(BB_FEATURE_SH_FANCY_PROMPT)
free(cmdedit_prompt);
#endif
- return;
+ cmdedit_reset_term();
}
-/* Undo the effects of cmdedit_init(). */
-extern void cmdedit_terminate(void)
-{
- cmdedit_reset_term();
- if ((handlers_sets & SET_TERM_HANDLERS) != 0) {
- signal(SIGKILL, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGQUIT, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGWINCH, SIG_DFL);
- handlers_sets &= ~SET_TERM_HANDLERS;
- }
-}
#endif /* BB_FEATURE_COMMAND_EDITING */
#include <locale.h>
#endif
-unsigned int shell_context;
-
int main(int argc, char **argv)
{
char buff[BUFSIZ];
#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
setlocale(LC_ALL, "");
#endif
- shell_context = 1;
- do {
+ while(1) {
int l;
cmdedit_read_input(prompt, buff);
l = strlen(buff);
+ if(l==0)
+ break;
if(l > 0 && buff[l-1] == '\n')
buff[l-1] = 0;
printf("*** cmdedit_read_input() returned line =%s=\n", buff);
- } while (shell_context);
+ }
printf("*** cmdedit_read_input() detect ^C\n");
return 0;
}
#ifndef CMDEDIT_H
#define CMDEDIT_H
-void cmdedit_init(void);
-void cmdedit_terminate(void);
void cmdedit_read_input(char* promptStr, char* command); /* read a line of input */
#endif /* CMDEDIT_H */
unsigned int last_return_code;
extern char **environ; /* This is in <unistd.h>, but protected with __USE_GNU */
-/* Variables we export */
-unsigned int shell_context; /* Used in cmdedit.c to reset the
- * context when someone hits ^C */
-
/* "globals" within this file */
static char *ifs;
static char map[256];
** child processes (rob@sysgo.de)
*/
cmdedit_read_input(prompt_str, the_command);
- cmdedit_terminate();
#else
fputs(prompt_str, stdout);
fflush(stdout);
/* Set the handling for job control signals back to the default. */
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGTTIN, SIG_DFL);
signal(SIGTTOU, SIG_DFL);
/* Ignore interactive and job-control signals. */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
+ signal(SIGTERM, SIG_IGN);
signal(SIGTSTP, SIG_IGN);
signal(SIGTTIN, SIG_IGN);
signal(SIGTTOU, SIG_IGN);
};
-/* Variables we export */
-unsigned int shell_context; /* Used in cmdedit.c to reset the
- context when someone hits ^C */
+static int shell_context; /* Type prompt trigger (PS1 or PS2) */
/* Globals that are static to this file */
** child processes (rob@sysgo.de)
*/
cmdedit_read_input(prompt_str, command);
- cmdedit_terminate();
return 0;
#else
fputs(prompt_str, stdout);
/* These variables need re-initializing when recursing */
last_jobid = 0;
- shell_context = 0;
local_pending_command = NULL;
close_me_head = NULL;
job_list.head = NULL;
#ifdef BB_FEATURE_COMMAND_EDITING
-char * current_prompt;
-unsigned int shell_context;
+static char * current_prompt;
#endif
if ((i = ap->afid != bp->id) || bp->bufp == bp->ebufp) {
if (i)
lseek(ap->afile, ap->afpos, 0);
- do {
- i = read(ap->afile, bp->buf, sizeof(bp->buf));
- } while (i < 0 && errno == EINTR);
+ i = safe_read(ap->afile, bp->buf, sizeof(bp->buf));
if (i <= 0) {
closef(ap->afile);
return 0;
while (size == 0 || position >= size) {
cmdedit_read_input(current_prompt, mycommand);
- cmdedit_terminate();
size = strlen(mycommand);
position = 0;
}
} else
#endif
{
- do {
- i = read(ap->afile, &c, sizeof(c));
- } while (i < 0 && errno == EINTR);
+ i = safe_read(ap->afile, &c, sizeof(c));
return(i == sizeof(c)? c&0177: (closef(ap->afile), 0));
}
}
David MacKenzie <djm@gnu.ai.mit.edu>
- Special for busybox ported by Vladimir Oleynik <vodz@usa.net> 2001
+ Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
*/
* This code is derived from software contributed to Berkeley by
* Van Jacobson.
*
+ * Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Tue Dec 20 03:50:13 PST 1988
*/
+#undef BB_FEATURE_TRACEROUTE_VERBOSE
+//#define BB_FEATURE_TRACEROUTE_VERBOSE
+#undef BB_FEATURE_TRACEROUTE_SO_DEBUG /* not in documentation man */
+
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include "busybox.h"
-static int wait_for_reply (int, struct sockaddr_in *, int);
-static void send_probe (int, int);
-static double deltaT (struct timeval *, struct timeval *);
-static int packet_ok (u_char *, int, struct sockaddr_in *, int);
-static void print (u_char *, int, struct sockaddr_in *);
-static char *inetname (struct in_addr);
-
static u_char packet[512]; /* last inbound (icmp) packet */
static struct opacket *outpacket; /* last output (udp) packet */
static u_short ident;
static u_short port = 32768+666; /* start udp dest port # for probe packets */
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
static int verbose;
+#endif
static int waittime = 5; /* time to wait for response (in seconds) */
static int nflag; /* print addresses numerically */
+/*
+ * Construct an Internet address representation.
+ * If the nflag has been supplied, give
+ * numeric value, otherwise try for symbolic name.
+ */
+static inline char *
+inetname(struct in_addr in)
+{
+ char *cp;
+ static char line[50];
+ struct hostent *hp;
+ static char domain[MAXHOSTNAMELEN + 1];
+ static int first = 1;
+
+ if (first && !nflag) {
+ first = 0;
+ if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
+ (cp = index(domain, '.')))
+ (void) strcpy(domain, cp + 1);
+ else
+ domain[0] = 0;
+ }
+ cp = 0;
+ if (!nflag && in.s_addr != INADDR_ANY) {
+ hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
+ if (hp) {
+ if ((cp = index(hp->h_name, '.')) &&
+ !strcmp(cp + 1, domain))
+ *cp = 0;
+ cp = (char *)hp->h_name;
+ }
+ }
+ if (cp)
+ (void) strcpy(line, cp);
+ else {
+ in.s_addr = ntohl(in.s_addr);
+ strcpy(line, inet_ntoa(in));
+ }
+ return (line);
+}
+
+static inline void
+print(u_char *buf, int cc, struct sockaddr_in *from)
+{
+ struct ip *ip;
+ int hlen;
+
+ ip = (struct ip *) buf;
+ hlen = ip->ip_hl << 2;
+ cc -= hlen;
+
+ if (nflag)
+ printf(" %s", inet_ntoa(from->sin_addr));
+ else
+ printf(" %s (%s)", inetname(from->sin_addr),
+ inet_ntoa(from->sin_addr));
+
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+ if (verbose)
+ printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
+#endif
+}
+
+static inline double
+deltaT(struct timeval *t1p, struct timeval *t2p)
+{
+ double dt;
+
+ dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
+ (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
+ return (dt);
+}
+
+static inline int
+wait_for_reply(int sock, struct sockaddr_in *from, int reset_timer)
+{
+ fd_set fds;
+ static struct timeval wait;
+ int cc = 0;
+ int fromlen = sizeof (*from);
+
+ FD_ZERO(&fds);
+ FD_SET(sock, &fds);
+ if (reset_timer) {
+ /*
+ * traceroute could hang if someone else has a ping
+ * running and our ICMP reply gets dropped but we don't
+ * realize it because we keep waking up to handle those
+ * other ICMP packets that keep coming in. To fix this,
+ * "reset_timer" will only be true if the last packet that
+ * came in was for us or if this is the first time we're
+ * waiting for a reply since sending out a probe. Note
+ * that this takes advantage of the select() feature on
+ * Linux where the remaining timeout is written to the
+ * struct timeval area.
+ */
+ wait.tv_sec = waittime;
+ wait.tv_usec = 0;
+ }
+
+ if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
+ cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
+ (struct sockaddr *)from, &fromlen);
+
+ return(cc);
+}
+
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+/*
+ * Convert an ICMP "type" field to a printable string.
+ */
+static inline const char *
+pr_type(t)
+ u_char t;
+{
+ static const char * const ttab[] = {
+ "Echo Reply", "ICMP 1", "ICMP 2", "Dest Unreachable",
+ "Source Quench", "Redirect", "ICMP 6", "ICMP 7",
+ "Echo", "ICMP 9", "ICMP 10", "Time Exceeded",
+ "Param Problem", "Timestamp", "Timestamp Reply", "Info Request",
+ "Info Reply"
+ };
+
+ if(t > 16)
+ return("OUT-OF-RANGE");
+
+ return(ttab[t]);
+}
+#endif
+
+static inline int
+packet_ok(u_char *buf, int cc, struct sockaddr_in *from, int seq)
+{
+ struct icmp *icp;
+ u_char type, code;
+ int hlen;
+ struct ip *ip;
+
+ ip = (struct ip *) buf;
+ hlen = ip->ip_hl << 2;
+ if (cc < hlen + ICMP_MINLEN) {
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+ if (verbose)
+ printf("packet too short (%d bytes) from %s\n", cc,
+ inet_ntoa(from->sin_addr));
+#endif
+ return (0);
+ }
+ cc -= hlen;
+ icp = (struct icmp *)(buf + hlen);
+ type = icp->icmp_type; code = icp->icmp_code;
+ if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
+ type == ICMP_UNREACH) {
+ struct ip *hip;
+ struct udphdr *up;
+
+ hip = &icp->icmp_ip;
+ hlen = hip->ip_hl << 2;
+ up = (struct udphdr *)((u_char *)hip + hlen);
+ if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
+ up->source == htons(ident) &&
+ up->dest == htons(port+seq))
+ return (type == ICMP_TIMXCEED? -1 : code+1);
+ }
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+ if (verbose) {
+ int i;
+ u_long *lp = (u_long *)&icp->icmp_ip;
+
+ printf("\n%d bytes from %s to %s: icmp type %d (%s) code %d\n",
+ cc, inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst),
+ type, pr_type(type), icp->icmp_code);
+ for (i = 4; i < cc ; i += sizeof(long))
+ printf("%2d: x%8.8lx\n", i, *lp++);
+ }
+#endif
+ return(0);
+}
+
+static void /* not inline */
+send_probe(int seq, int ttl)
+{
+ struct opacket *op = outpacket;
+ struct ip *ip = &op->ip;
+ struct udphdr *up = &op->udp;
+ int i;
+ struct timezone tz;
+
+ ip->ip_off = 0;
+ ip->ip_hl = sizeof(*ip) >> 2;
+ ip->ip_p = IPPROTO_UDP;
+ ip->ip_len = datalen;
+ ip->ip_ttl = ttl;
+ ip->ip_v = IPVERSION;
+ ip->ip_id = htons(ident+seq);
+
+ up->source = htons(ident);
+ up->dest = htons(port+seq);
+ up->len = htons((u_short)(datalen - sizeof(struct ip)));
+ up->check = 0;
+
+ op->seq = seq;
+ op->ttl = ttl;
+ (void) gettimeofday(&op->tv, &tz);
+
+ i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
+ sizeof(struct sockaddr));
+ if (i < 0 || i != datalen) {
+ if (i<0)
+ perror("sendto");
+ printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
+ datalen, i);
+ (void) fflush(stdout);
+ }
+}
+
+
int
#ifndef BB_TRACEROUTE
main(argc, argv)
extern char *optarg;
extern int optind;
struct hostent *hp;
- struct protoent *pe;
struct sockaddr_in from, *to;
int ch, i, on, probe, seq, tos, ttl;
while ((ch = getopt(argc, argv, "dm:np:q:rs:t:w:v")) != EOF)
switch(ch) {
case 'd':
+#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
options |= SO_DEBUG;
+#endif
break;
case 'm':
max_ttl = atoi(optarg);
error_msg_and_die("tos must be 0 to 255.");
break;
case 'v':
+#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
verbose++;
+#endif
break;
case 'w':
waittime = atoi(optarg);
setlinebuf (stdout);
- (void) bzero((char *)&whereto, sizeof(struct sockaddr));
- to->sin_family = AF_INET;
- to->sin_addr.s_addr = inet_addr(*argv);
- if (to->sin_addr.s_addr != -1)
- hostname = *argv;
- else {
- hp = gethostbyname(*argv);
- if (hp) {
+ memset(&whereto, 0, sizeof(struct sockaddr));
+ hp = xgethostbyname(*argv);
to->sin_family = hp->h_addrtype;
- bcopy(hp->h_addr, (caddr_t)&to->sin_addr, hp->h_length);
+ memcpy(&to->sin_addr, hp->h_addr, hp->h_length);
hostname = (char *)hp->h_name;
- } else {
- error_msg_and_die("unknown host %s", *argv);
- }
- }
if (*++argv)
datalen = atoi(*argv);
if (datalen < 0 || datalen >= MAXPACKET - sizeof(struct opacket))
MAXPACKET - sizeof(struct opacket));
datalen += sizeof(struct opacket);
outpacket = (struct opacket *)xmalloc((unsigned)datalen);
- (void) bzero((char *)outpacket, datalen);
+ memset(outpacket, 0, datalen);
outpacket->ip.ip_dst = to->sin_addr;
outpacket->ip.ip_tos = tos;
outpacket->ip.ip_v = IPVERSION;
ident = (getpid() & 0xffff) | 0x8000;
- if ((pe = getprotobyname("icmp")) == NULL)
- error_msg_and_die("icmp: unknown protocol");
- if ((s = socket(AF_INET, SOCK_RAW, pe->p_proto)) < 0)
- perror_msg_and_die("icmp socket");
+ if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
+ perror_msg_and_die(can_not_create_raw_socket);
+
+ s = create_icmp_socket();
+
+#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
if (options & SO_DEBUG)
(void) setsockopt(s, SOL_SOCKET, SO_DEBUG,
(char *)&on, sizeof(on));
+#endif
if (options & SO_DONTROUTE)
(void) setsockopt(s, SOL_SOCKET, SO_DONTROUTE,
(char *)&on, sizeof(on));
-
- if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
- perror_msg_and_die("raw socket");
#ifdef SO_SNDBUF
if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
sizeof(datalen)) < 0)
sizeof(on)) < 0)
perror_msg_and_die("IP_HDRINCL");
#endif IP_HDRINCL
+#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
if (options & SO_DEBUG)
(void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
(char *)&on, sizeof(on));
+#endif
if (options & SO_DONTROUTE)
(void) setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE,
(char *)&on, sizeof(on));
if (source) {
- (void) bzero((char *)&from, sizeof(struct sockaddr));
+ memset(&from, 0, sizeof(struct sockaddr));
from.sin_family = AF_INET;
from.sin_addr.s_addr = inet_addr(source);
if (from.sin_addr.s_addr == -1)
if (source)
fprintf(stderr, " from %s", source);
fprintf(stderr, ", %d hops max, %d byte packets\n", max_ttl, datalen);
- (void) fflush(stderr);
for (ttl = 1; ttl <= max_ttl; ++ttl) {
u_long lastaddr = 0;
printf(" %g ms", deltaT(&t1, &t2));
switch(i - 1) {
case ICMP_UNREACH_PORT:
-#ifndef ARCHAIC
ip = (struct ip *)packet;
if (ip->ip_ttl <= 1)
printf(" !");
-#endif ARCHAIC
++got_there;
break;
case ICMP_UNREACH_NET:
return 0;
}
-
-static int
-wait_for_reply(sock, from, reset_timer)
- int sock;
- struct sockaddr_in *from;
- int reset_timer;
-{
- fd_set fds;
- static struct timeval wait;
- int cc = 0;
- int fromlen = sizeof (*from);
-
- FD_ZERO(&fds);
- FD_SET(sock, &fds);
- if (reset_timer) {
- /*
- * traceroute could hang if someone else has a ping
- * running and our ICMP reply gets dropped but we don't
- * realize it because we keep waking up to handle those
- * other ICMP packets that keep coming in. To fix this,
- * "reset_timer" will only be true if the last packet that
- * came in was for us or if this is the first time we're
- * waiting for a reply since sending out a probe. Note
- * that this takes advantage of the select() feature on
- * Linux where the remaining timeout is written to the
- * struct timeval area.
- */
- wait.tv_sec = waittime;
- wait.tv_usec = 0;
- }
-
- if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
- cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
- (struct sockaddr *)from, &fromlen);
-
- return(cc);
-}
-
-
-static void
-send_probe(seq, ttl)
- int seq, ttl;
-{
- struct opacket *op = outpacket;
- struct ip *ip = &op->ip;
- struct udphdr *up = &op->udp;
- int i;
- struct timezone tz;
-
- ip->ip_off = 0;
- ip->ip_hl = sizeof(*ip) >> 2;
- ip->ip_p = IPPROTO_UDP;
- ip->ip_len = datalen;
- ip->ip_ttl = ttl;
- ip->ip_v = IPVERSION;
- ip->ip_id = htons(ident+seq);
-
- up->source = htons(ident);
- up->dest = htons(port+seq);
- up->len = htons((u_short)(datalen - sizeof(struct ip)));
- up->check = 0;
-
- op->seq = seq;
- op->ttl = ttl;
- (void) gettimeofday(&op->tv, &tz);
-
- i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
- sizeof(struct sockaddr));
- if (i < 0 || i != datalen) {
- if (i<0)
- perror("sendto");
- printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
- datalen, i);
- (void) fflush(stdout);
- }
-}
-
-
-static double
-deltaT(t1p, t2p)
- struct timeval *t1p, *t2p;
-{
- register double dt;
-
- dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
- (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
- return (dt);
-}
-
-
-/*
- * Convert an ICMP "type" field to a printable string.
- */
-static const char *
-pr_type(t)
- u_char t;
-{
- static const char * const ttab[] = {
- "Echo Reply", "ICMP 1", "ICMP 2", "Dest Unreachable",
- "Source Quench", "Redirect", "ICMP 6", "ICMP 7",
- "Echo", "ICMP 9", "ICMP 10", "Time Exceeded",
- "Param Problem", "Timestamp", "Timestamp Reply", "Info Request",
- "Info Reply"
- };
-
- if(t > 16)
- return("OUT-OF-RANGE");
-
- return(ttab[t]);
-}
-
-
-static int
-packet_ok(buf, cc, from, seq)
- u_char *buf;
- int cc;
- struct sockaddr_in *from;
- int seq;
-{
- register struct icmp *icp;
- u_char type, code;
- int hlen;
-#ifndef ARCHAIC
- struct ip *ip;
-
- ip = (struct ip *) buf;
- hlen = ip->ip_hl << 2;
- if (cc < hlen + ICMP_MINLEN) {
- if (verbose)
- printf("packet too short (%d bytes) from %s\n", cc,
- inet_ntoa(from->sin_addr));
- return (0);
- }
- cc -= hlen;
- icp = (struct icmp *)(buf + hlen);
-#else
- icp = (struct icmp *)buf;
-#endif ARCHAIC
- type = icp->icmp_type; code = icp->icmp_code;
- if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
- type == ICMP_UNREACH) {
- struct ip *hip;
- struct udphdr *up;
-
- hip = &icp->icmp_ip;
- hlen = hip->ip_hl << 2;
- up = (struct udphdr *)((u_char *)hip + hlen);
- if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
- up->source == htons(ident) &&
- up->dest == htons(port+seq))
- return (type == ICMP_TIMXCEED? -1 : code+1);
- }
-#ifndef ARCHAIC
- if (verbose) {
- int i;
- u_long *lp = (u_long *)&icp->icmp_ip;
-
- printf("\n%d bytes from %s to %s", cc,
- inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst));
- printf(": icmp type %d (%s) code %d\n", type, pr_type(type),
- icp->icmp_code);
- for (i = 4; i < cc ; i += sizeof(long))
- printf("%2d: x%8.8lx\n", i, *lp++);
- }
-#endif ARCHAIC
- return(0);
-}
-
-
-static void
-print(buf, cc, from)
- u_char *buf;
- int cc;
- struct sockaddr_in *from;
-{
- struct ip *ip;
- int hlen;
-
- ip = (struct ip *) buf;
- hlen = ip->ip_hl << 2;
- cc -= hlen;
-
- if (nflag)
- printf(" %s", inet_ntoa(from->sin_addr));
- else
- printf(" %s (%s)", inetname(from->sin_addr),
- inet_ntoa(from->sin_addr));
-
- if (verbose)
- printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
-}
-
-
-/*
- * Construct an Internet address representation.
- * If the nflag has been supplied, give
- * numeric value, otherwise try for symbolic name.
- */
-static char *
-inetname(in)
- struct in_addr in;
-{
- register char *cp;
- static char line[50];
- struct hostent *hp;
- static char domain[MAXHOSTNAMELEN + 1];
- static int first = 1;
-
- if (first && !nflag) {
- first = 0;
- if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
- (cp = index(domain, '.')))
- (void) strcpy(domain, cp + 1);
- else
- domain[0] = 0;
- }
- cp = 0;
- if (!nflag && in.s_addr != INADDR_ANY) {
- hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
- if (hp) {
- if ((cp = index(hp->h_name, '.')) &&
- !strcmp(cp + 1, domain))
- *cp = 0;
- cp = (char *)hp->h_name;
- }
- }
- if (cp)
- (void) strcpy(line, cp);
- else {
- in.s_addr = ntohl(in.s_addr);
-#define C(x) ((x) & 0xff)
- sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
- C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
- }
- return (line);
-}
projects / oweals / busybox.git / commitdiff