version 1.50, 2004/08/11 21:44:32 |
version 1.50.2.2, 2005/09/02 03:45:01 |
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#include "log.h" |
#include "log.h" |
#include "atomicio.h" |
#include "atomicio.h" |
#include "misc.h" |
#include "misc.h" |
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#include "hostfile.h" |
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/* Flag indicating whether IPv4 or IPv6. This can be set on the command line. |
/* Flag indicating whether IPv4 or IPv6. This can be set on the command line. |
Default value is AF_UNSPEC means both IPv4 and IPv6. */ |
Default value is AF_UNSPEC means both IPv4 and IPv6. */ |
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int get_keytypes = KT_RSA1; /* Get only RSA1 keys by default */ |
int get_keytypes = KT_RSA1; /* Get only RSA1 keys by default */ |
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int hash_hosts = 0; /* Hash hostname on output */ |
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#define MAXMAXFD 256 |
#define MAXMAXFD 256 |
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/* The number of seconds after which to give up on a TCP connection */ |
/* The number of seconds after which to give up on a TCP connection */ |
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static char * |
static char * |
Linebuf_getline(Linebuf * lb) |
Linebuf_getline(Linebuf * lb) |
{ |
{ |
int n = 0; |
size_t n = 0; |
void *p; |
void *p; |
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lb->lineno++; |
lb->lineno++; |
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static void |
static void |
keyprint(con *c, Key *key) |
keyprint(con *c, Key *key) |
{ |
{ |
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char *host = c->c_output_name ? c->c_output_name : c->c_name; |
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if (!key) |
if (!key) |
return; |
return; |
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if (hash_hosts && (host = host_hash(host, NULL, 0)) == NULL) |
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fatal("host_hash failed"); |
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fprintf(stdout, "%s ", c->c_output_name ? c->c_output_name : c->c_name); |
fprintf(stdout, "%s ", host); |
key_write(key, stdout); |
key_write(key, stdout); |
fputs("\n", stdout); |
fputs("\n", stdout); |
} |
} |
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static void |
static void |
congreet(int s) |
congreet(int s) |
{ |
{ |
int remote_major = 0, remote_minor = 0, n = 0; |
int n = 0, remote_major = 0, remote_minor = 0; |
char buf[256], *cp; |
char buf[256], *cp; |
char remote_version[sizeof buf]; |
char remote_version[sizeof buf]; |
size_t bufsiz; |
size_t bufsiz; |
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*cp = '\n'; |
*cp = '\n'; |
cp++; |
cp++; |
} |
} |
if (n < 0) { |
if (n == 0) { |
if (errno != ECONNREFUSED) |
switch (errno) { |
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case EPIPE: |
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error("%s: Connection closed by remote host", c->c_name); |
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break; |
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case ECONNREFUSED: |
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break; |
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default: |
error("read (%s): %s", c->c_name, strerror(errno)); |
error("read (%s): %s", c->c_name, strerror(errno)); |
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break; |
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} |
conrecycle(s); |
conrecycle(s); |
return; |
return; |
} |
} |
if (n == 0) { |
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error("%s: Connection closed by remote host", c->c_name); |
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conrecycle(s); |
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return; |
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} |
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if (*cp != '\n' && *cp != '\r') { |
if (*cp != '\n' && *cp != '\r') { |
error("%s: bad greeting", c->c_name); |
error("%s: bad greeting", c->c_name); |
confree(s); |
confree(s); |
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n = snprintf(buf, sizeof buf, "SSH-%d.%d-OpenSSH-keyscan\r\n", |
n = snprintf(buf, sizeof buf, "SSH-%d.%d-OpenSSH-keyscan\r\n", |
c->c_keytype == KT_RSA1? PROTOCOL_MAJOR_1 : PROTOCOL_MAJOR_2, |
c->c_keytype == KT_RSA1? PROTOCOL_MAJOR_1 : PROTOCOL_MAJOR_2, |
c->c_keytype == KT_RSA1? PROTOCOL_MINOR_1 : PROTOCOL_MINOR_2); |
c->c_keytype == KT_RSA1? PROTOCOL_MINOR_1 : PROTOCOL_MINOR_2); |
if (atomicio(vwrite, s, buf, n) != n) { |
if (n < 0 || (size_t)n >= sizeof(buf)) { |
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error("snprintf: buffer too small"); |
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confree(s); |
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return; |
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} |
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if (atomicio(vwrite, s, buf, n) != (size_t)n) { |
error("write (%s): %s", c->c_name, strerror(errno)); |
error("write (%s): %s", c->c_name, strerror(errno)); |
confree(s); |
confree(s); |
return; |
return; |
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conread(int s) |
conread(int s) |
{ |
{ |
con *c = &fdcon[s]; |
con *c = &fdcon[s]; |
int n; |
size_t n; |
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if (c->c_status == CS_CON) { |
if (c->c_status == CS_CON) { |
congreet(s); |
congreet(s); |
return; |
return; |
} |
} |
n = atomicio(read, s, c->c_data + c->c_off, c->c_len - c->c_off); |
n = atomicio(read, s, c->c_data + c->c_off, c->c_len - c->c_off); |
if (n < 0) { |
if (n == 0) { |
error("read (%s): %s", c->c_name, strerror(errno)); |
error("read (%s): %s", c->c_name, strerror(errno)); |
confree(s); |
confree(s); |
return; |
return; |
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static void |
static void |
usage(void) |
usage(void) |
{ |
{ |
fprintf(stderr, "usage: %s [-v46] [-p port] [-T timeout] [-t type] [-f file]\n" |
fprintf(stderr, "usage: %s [-46Hv] [-f file] [-p port] [-T timeout] [-t type]\n" |
"\t\t [host | addrlist namelist] [...]\n", |
"\t\t [host | addrlist namelist] [...]\n", |
__progname); |
__progname); |
exit(1); |
exit(1); |
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if (argc <= 1) |
if (argc <= 1) |
usage(); |
usage(); |
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while ((opt = getopt(argc, argv, "v46p:T:t:f:")) != -1) { |
while ((opt = getopt(argc, argv, "Hv46p:T:t:f:")) != -1) { |
switch (opt) { |
switch (opt) { |
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case 'H': |
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hash_hosts = 1; |
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break; |
case 'p': |
case 'p': |
ssh_port = a2port(optarg); |
ssh_port = a2port(optarg); |
if (ssh_port == 0) { |
if (ssh_port == 0) { |