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Diffstat (limited to 'usr.bin/ssh/auth-options.c')
-rw-r--r--usr.bin/ssh/auth-options.c122
1 files changed, 65 insertions, 57 deletions
diff --git a/usr.bin/ssh/auth-options.c b/usr.bin/ssh/auth-options.c
index 5457d9b149c..04d2f085f62 100644
--- a/usr.bin/ssh/auth-options.c
+++ b/usr.bin/ssh/auth-options.c
@@ -10,7 +10,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: auth-options.c,v 1.11 2001/01/21 19:05:41 markus Exp $");
+RCSID("$OpenBSD: auth-options.c,v 1.12 2001/02/03 10:08:36 markus Exp $");
#include "packet.h"
#include "xmalloc.h"
@@ -18,6 +18,7 @@ RCSID("$OpenBSD: auth-options.c,v 1.11 2001/01/21 19:05:41 markus Exp $");
#include "log.h"
#include "canohost.h"
#include "auth-options.h"
+#include "servconf.h"
/* Flags set authorized_keys flags */
int no_port_forwarding_flag = 0;
@@ -31,6 +32,8 @@ char *forced_command = NULL;
/* "environment=" options. */
struct envstring *custom_environment = NULL;
+extern ServerOptions options;
+
void
auth_clear_options(void)
{
@@ -55,61 +58,61 @@ auth_clear_options(void)
* side effect: sets key option flags
*/
int
-auth_parse_options(struct passwd *pw, char *options, char *file, u_long linenum)
+auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
{
const char *cp;
- if (!options)
+ if (!opts)
return 1;
/* reset options */
auth_clear_options();
- while (*options && *options != ' ' && *options != '\t') {
+ while (*opts && *opts != ' ' && *opts != '\t') {
cp = "no-port-forwarding";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
packet_send_debug("Port forwarding disabled.");
no_port_forwarding_flag = 1;
- options += strlen(cp);
+ opts += strlen(cp);
goto next_option;
}
cp = "no-agent-forwarding";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
packet_send_debug("Agent forwarding disabled.");
no_agent_forwarding_flag = 1;
- options += strlen(cp);
+ opts += strlen(cp);
goto next_option;
}
cp = "no-X11-forwarding";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
packet_send_debug("X11 forwarding disabled.");
no_x11_forwarding_flag = 1;
- options += strlen(cp);
+ opts += strlen(cp);
goto next_option;
}
cp = "no-pty";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
packet_send_debug("Pty allocation disabled.");
no_pty_flag = 1;
- options += strlen(cp);
+ opts += strlen(cp);
goto next_option;
}
cp = "command=\"";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
int i;
- options += strlen(cp);
- forced_command = xmalloc(strlen(options) + 1);
+ opts += strlen(cp);
+ forced_command = xmalloc(strlen(opts) + 1);
i = 0;
- while (*options) {
- if (*options == '"')
+ while (*opts) {
+ if (*opts == '"')
break;
- if (*options == '\\' && options[1] == '"') {
- options += 2;
+ if (*opts == '\\' && opts[1] == '"') {
+ opts += 2;
forced_command[i++] = '"';
continue;
}
- forced_command[i++] = *options++;
+ forced_command[i++] = *opts++;
}
- if (!*options) {
+ if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
packet_send_debug("%.100s, line %lu: missing end quote",
@@ -118,28 +121,28 @@ auth_parse_options(struct passwd *pw, char *options, char *file, u_long linenum)
}
forced_command[i] = 0;
packet_send_debug("Forced command: %.900s", forced_command);
- options++;
+ opts++;
goto next_option;
}
cp = "environment=\"";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
int i;
char *s;
struct envstring *new_envstring;
- options += strlen(cp);
- s = xmalloc(strlen(options) + 1);
+ opts += strlen(cp);
+ s = xmalloc(strlen(opts) + 1);
i = 0;
- while (*options) {
- if (*options == '"')
+ while (*opts) {
+ if (*opts == '"')
break;
- if (*options == '\\' && options[1] == '"') {
- options += 2;
+ if (*opts == '\\' && opts[1] == '"') {
+ opts += 2;
s[i++] = '"';
continue;
}
- s[i++] = *options++;
+ s[i++] = *opts++;
}
- if (!*options) {
+ if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
packet_send_debug("%.100s, line %lu: missing end quote",
@@ -149,7 +152,7 @@ auth_parse_options(struct passwd *pw, char *options, char *file, u_long linenum)
s[i] = 0;
packet_send_debug("Adding to environment: %.900s", s);
debug("Adding to environment: %.900s", s);
- options++;
+ opts++;
new_envstring = xmalloc(sizeof(struct envstring));
new_envstring->s = s;
new_envstring->next = custom_environment;
@@ -157,23 +160,26 @@ auth_parse_options(struct passwd *pw, char *options, char *file, u_long linenum)
goto next_option;
}
cp = "from=\"";
- if (strncasecmp(options, cp, strlen(cp)) == 0) {
+ if (strncasecmp(opts, cp, strlen(cp)) == 0) {
int mname, mip;
- char *patterns = xmalloc(strlen(options) + 1);
+ const char *remote_ip = get_remote_ipaddr();
+ const char *remote_host = get_canonical_hostname(
+ options.reverse_mapping_check);
+ char *patterns = xmalloc(strlen(opts) + 1);
int i;
- options += strlen(cp);
+ opts += strlen(cp);
i = 0;
- while (*options) {
- if (*options == '"')
+ while (*opts) {
+ if (*opts == '"')
break;
- if (*options == '\\' && options[1] == '"') {
- options += 2;
+ if (*opts == '\\' && opts[1] == '"') {
+ opts += 2;
patterns[i++] = '"';
continue;
}
- patterns[i++] = *options++;
+ patterns[i++] = *opts++;
}
- if (!*options) {
+ if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
packet_send_debug("%.100s, line %lu: missing end quote",
@@ -181,24 +187,26 @@ auth_parse_options(struct passwd *pw, char *options, char *file, u_long linenum)
continue;
}
patterns[i] = 0;
- options++;
+ opts++;
/*
* Deny access if we get a negative
* match for the hostname or the ip
* or if we get not match at all
*/
- mname = match_hostname(get_canonical_hostname(),
- patterns, strlen(patterns));
- mip = match_hostname(get_remote_ipaddr(),
- patterns, strlen(patterns));
+ mname = match_hostname(remote_host, patterns,
+ strlen(patterns));
+ mip = match_hostname(remote_ip, patterns,
+ strlen(patterns));
xfree(patterns);
if (mname == -1 || mip == -1 ||
(mname != 1 && mip != 1)) {
- log("Authentication tried for %.100s with correct key but not from a permitted host (host=%.200s, ip=%.200s).",
- pw->pw_name, get_canonical_hostname(),
- get_remote_ipaddr());
- packet_send_debug("Your host '%.200s' is not permitted to use this key for login.",
- get_canonical_hostname());
+ log("Authentication tried for %.100s with "
+ "correct key but not from a permitted "
+ "host (host=%.200s, ip=%.200s).",
+ pw->pw_name, remote_host, remote_ip);
+ packet_send_debug("Your host '%.200s' is not "
+ "permitted to use this key for login.",
+ remote_host);
/* deny access */
return 0;
}
@@ -210,13 +218,13 @@ next_option:
* Skip the comma, and move to the next option
* (or break out if there are no more).
*/
- if (!*options)
+ if (!*opts)
fatal("Bugs in auth-options.c option processing.");
- if (*options == ' ' || *options == '\t')
+ if (*opts == ' ' || *opts == '\t')
break; /* End of options. */
- if (*options != ',')
+ if (*opts != ',')
goto bad_option;
- options++;
+ opts++;
/* Process the next option. */
}
/* grant access */
@@ -224,9 +232,9 @@ next_option:
bad_option:
log("Bad options in %.100s file, line %lu: %.50s",
- file, linenum, options);
+ file, linenum, opts);
packet_send_debug("Bad options in %.100s file, line %lu: %.50s",
- file, linenum, options);
+ file, linenum, opts);
/* deny access */
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 04:24:34 +0000