*/
#include "includes.h"
-RCSID("$OpenBSD: ssh-add.c,v 1.30 2001/03/12 22:02:02 markus Exp $");
+RCSID("$OpenBSD: ssh-add.c,v 1.38 2001/06/06 23:19:35 markus Exp $");
#include <openssl/evp.h>
char *__progname;
#endif
+/* we keep a cache of one passphrases */
+static char *pass = NULL;
+void
+clear_pass(void)
+{
+ if (pass) {
+ memset(pass, 0, strlen(pass));
+ xfree(pass);
+ pass = NULL;
+ }
+}
+
void
delete_file(AuthenticationConnection *ac, const char *filename)
{
Key *public;
- char *comment;
+ char *comment = NULL;
- public = key_new(KEY_RSA1);
- if (!load_public_key(filename, public, &comment)) {
- key_free(public);
- public = key_new(KEY_UNSPEC);
- if (!try_load_public_key(filename, public, &comment)) {
- printf("Bad key file %s\n", filename);
- return;
- }
+ public = key_load_public(filename, &comment);
+ if (public == NULL) {
+ printf("Bad key file %s\n", filename);
+ return;
}
if (ssh_remove_identity(ac, public))
fprintf(stderr, "Identity removed: %s (%s)\n", filename, comment);
fprintf(stderr, "Failed to remove all identities.\n");
}
-char *
-ssh_askpass(char *askpass, char *msg)
-{
- pid_t pid;
- size_t len;
- char *nl, *pass;
- int p[2], status;
- char buf[1024];
-
- if (fflush(stdout) != 0)
- error("ssh_askpass: fflush: %s", strerror(errno));
- if (askpass == NULL)
- fatal("internal error: askpass undefined");
- if (pipe(p) < 0)
- fatal("ssh_askpass: pipe: %s", strerror(errno));
- if ((pid = fork()) < 0)
- fatal("ssh_askpass: fork: %s", strerror(errno));
- if (pid == 0) {
- close(p[0]);
- if (dup2(p[1], STDOUT_FILENO) < 0)
- fatal("ssh_askpass: dup2: %s", strerror(errno));
- execlp(askpass, askpass, msg, (char *) 0);
- fatal("ssh_askpass: exec(%s): %s", askpass, strerror(errno));
- }
- close(p[1]);
- len = read(p[0], buf, sizeof buf);
- close(p[0]);
- while (waitpid(pid, &status, 0) < 0)
- if (errno != EINTR)
- break;
- if (len <= 1)
- return xstrdup("");
- nl = strchr(buf, '\n');
- if (nl)
- *nl = '\0';
- pass = xstrdup(buf);
- memset(buf, 0, sizeof(buf));
- return pass;
-}
-
void
add_file(AuthenticationConnection *ac, const char *filename)
{
struct stat st;
- Key *public;
Key *private;
- char *saved_comment, *comment, *askpass = NULL;
- char buf[1024], msg[1024];
- int success;
- int interactive = isatty(STDIN_FILENO);
- int type = KEY_RSA1;
+ char *comment = NULL;
+ char msg[1024];
if (stat(filename, &st) < 0) {
perror(filename);
exit(1);
}
- /*
- * try to load the public key. right now this only works for RSA,
- * since DSA keys are fully encrypted
- */
- public = key_new(KEY_RSA1);
- if (!load_public_key(filename, public, &saved_comment)) {
- /* ok, so we will assume this is 'some' key */
- type = KEY_UNSPEC;
- saved_comment = xstrdup(filename);
- }
- key_free(public);
-
- if (!interactive && getenv("DISPLAY")) {
- if (getenv(SSH_ASKPASS_ENV))
- askpass = getenv(SSH_ASKPASS_ENV);
- else
- askpass = _PATH_SSH_ASKPASS_DEFAULT;
- }
-
/* At first, try empty passphrase */
- private = key_new(type);
- success = load_private_key(filename, "", private, &comment);
- if (!success) {
- printf("Need passphrase for %.200s\n", filename);
- if (!interactive && askpass == NULL) {
- xfree(saved_comment);
- return;
- }
- snprintf(msg, sizeof msg, "Enter passphrase for %.200s", saved_comment);
+ private = key_load_private(filename, "", &comment);
+ if (comment == NULL)
+ comment = xstrdup(filename);
+ /* try last */
+ if (private == NULL && pass != NULL)
+ private = key_load_private(filename, pass, NULL);
+ if (private == NULL) {
+ /* clear passphrase since it did not work */
+ clear_pass();
+ snprintf(msg, sizeof msg, "Enter passphrase for %.200s: ",
+ comment);
for (;;) {
- char *pass;
- if (interactive) {
- snprintf(buf, sizeof buf, "%s: ", msg);
- pass = read_passphrase(buf, 1);
- } else {
- pass = ssh_askpass(askpass, msg);
- }
+ pass = read_passphrase(msg, 1);
if (strcmp(pass, "") == 0) {
- xfree(pass);
- xfree(saved_comment);
+ clear_pass();
+ xfree(comment);
return;
}
- success = load_private_key(filename, pass, private, &comment);
- memset(pass, 0, strlen(pass));
- xfree(pass);
- if (success)
+ private = key_load_private(filename, pass, &comment);
+ if (private != NULL)
break;
- strlcpy(msg, "Bad passphrase, try again", sizeof msg);
+ clear_pass();
+ strlcpy(msg, "Bad passphrase, try again: ", sizeof msg);
}
}
- xfree(comment);
- if (ssh_add_identity(ac, private, saved_comment))
- fprintf(stderr, "Identity added: %s (%s)\n", filename, saved_comment);
+ if (ssh_add_identity(ac, private, comment))
+ fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
else
fprintf(stderr, "Could not add identity: %s\n", filename);
+ xfree(comment);
key_free(private);
- xfree(saved_comment);
}
void
__progname = get_progname(argv[0]);
init_rng();
+ seed_rng();
SSLeay_add_all_algorithms();
else
add_file(ac, buf);
}
+ clear_pass();
ssh_close_authentication_connection(ac);
exit(0);
}
andersk / openssh.git / blobdiff