diff -up openssh-5.8p1/Makefile.in.keycat openssh-5.8p1/Makefile.in --- openssh-5.8p1/Makefile.in.keycat 2011-02-28 12:06:55.000000000 +0100 +++ openssh-5.8p1/Makefile.in 2011-02-28 12:11:18.000000000 +0100 @@ -28,6 +28,7 @@ SSH_KEYSIGN=$(libexecdir)/ssh-keysign SSH_PKCS11_HELPER=$(libexecdir)/ssh-pkcs11-helper SSH_LDAP_HELPER=$(libexecdir)/ssh-ldap-helper SSH_LDAP_WRAPPER=$(libexecdir)/ssh-ldap-wrapper +SSH_KEYCAT=$(libexecdir)/ssh-keycat RAND_HELPER=$(libexecdir)/ssh-rand-helper PRIVSEP_PATH=@PRIVSEP_PATH@ SSH_PRIVSEP_USER=@SSH_PRIVSEP_USER@ @@ -67,7 +68,7 @@ INSTALL_SSH_PRNG_CMDS=@INSTALL_SSH_PRNG_ INSTALL_SSH_RAND_HELPER=@INSTALL_SSH_RAND_HELPER@ INSTALL_SSH_LDAP_HELPER=@INSTALL_SSH_LDAP_HELPER@ -TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) ssh-rand-helper${EXEEXT} sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) +TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) ssh-rand-helper${EXEEXT} sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT) LIBSSH_OBJS=acss.o authfd.o authfile.o bufaux.o bufbn.o buffer.o \ canohost.o channels.o cipher.o cipher-acss.o cipher-aes.o \ @@ -173,6 +174,9 @@ ssh-pkcs11-helper$(EXEEXT): $(LIBCOMPAT) ssh-ldap-helper$(EXEEXT): $(LIBCOMPAT) libssh.a ldapconf.o ldapbody.o ldapmisc.o ldap-helper.o $(LD) -o $@ ldapconf.o ldapbody.o ldapmisc.o ldap-helper.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS) +ssh-keycat$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keycat.o + $(LD) -o $@ ssh-keycat.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(SSHDLIBS) + ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o roaming_dummy.o $(LD) -o $@ ssh-keyscan.o roaming_dummy.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(LIBS) @@ -281,6 +285,7 @@ install-files: $(INSTALL) -m 0700 $(STRIP_OPT) ssh-ldap-helper $(DESTDIR)$(SSH_LDAP_HELPER) ; \ $(INSTALL) -m 0700 ssh-ldap-wrapper $(DESTDIR)$(SSH_LDAP_WRAPPER) ; \ fi + $(INSTALL) -m 0755 $(STRIP_OPT) ssh-keycat$(EXEEXT) $(DESTDIR)$(libexecdir)/ssh-keycat$(EXEEXT) $(INSTALL) -m 0755 $(STRIP_OPT) sftp$(EXEEXT) $(DESTDIR)$(bindir)/sftp$(EXEEXT) $(INSTALL) -m 0755 $(STRIP_OPT) sftp-server$(EXEEXT) $(DESTDIR)$(SFTP_SERVER)$(EXEEXT) $(INSTALL) -m 644 ssh.1.out $(DESTDIR)$(mandir)/$(mansubdir)1/ssh.1 diff -up openssh-5.8p1/ssh-keycat.c.keycat openssh-5.8p1/ssh-keycat.c --- openssh-5.8p1/ssh-keycat.c.keycat 2011-02-28 12:06:28.000000000 +0100 +++ openssh-5.8p1/ssh-keycat.c 2011-02-25 18:46:31.000000000 +0100 @@ -0,0 +1,205 @@ +/* + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, and the entire permission notice in its entirety, + * including the disclaimer of warranties. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * ALTERNATIVELY, this product may be distributed under the terms of + * the GNU Public License, in which case the provisions of the GPL are + * required INSTEAD OF the above restrictions. (This clause is + * necessary due to a potential bad interaction between the GPL and + * the restrictions contained in a BSD-style copyright.) + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (c) 2011 Red Hat, Inc. + * Written by Tomas Mraz +*/ + +#define _GNU_SOURCE + +#include "config.h" +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "uidswap.h" +#include "misc.h" + +#define ERR_USAGE 1 +#define ERR_PAM_START 2 +#define ERR_OPEN_SESSION 3 +#define ERR_CLOSE_SESSION 4 +#define ERR_PAM_END 5 +#define ERR_GETPWNAM 6 +#define ERR_MEMORY 7 +#define ERR_OPEN 8 +#define ERR_FILE_MODE 9 +#define ERR_FDOPEN 10 +#define ERR_STAT 11 +#define ERR_WRITE 12 +#define BUFLEN 4096 + +/* Just ignore the messages in the conversation function */ +static int +dummy_conv(int num_msg, const struct pam_message **msgm, + struct pam_response **response, void *appdata_ptr) +{ + struct pam_response *rsp; + + (void)msgm; + (void)appdata_ptr; + + if (num_msg <= 0) + return PAM_CONV_ERR; + + /* Just allocate the array as empty responses */ + rsp = calloc (num_msg, sizeof (struct pam_response)); + if (rsp == NULL) + return PAM_CONV_ERR; + + *response = rsp; + return PAM_SUCCESS; +} + +static struct pam_conv conv = { + dummy_conv, + NULL +}; + +char * +make_auth_keys_name(const struct passwd *pwd) +{ + char *fname; + + if (asprintf(&fname, "%s/.ssh/authorized_keys", pwd->pw_dir) < 0) + return NULL; + + return fname; +} + +int +dump_keys(const char *user) +{ + struct passwd *pwd; + int fd = -1; + FILE *f = NULL; + char *fname = NULL; + int rv = 0; + char buf[BUFLEN]; + size_t len; + struct stat st; + + if ((pwd = getpwnam(user)) == NULL) { + return ERR_GETPWNAM; + } + + if ((fname = make_auth_keys_name(pwd)) == NULL) { + return ERR_MEMORY; + } + + temporarily_use_uid(pwd); + + if ((fd = open(fname, O_RDONLY|O_NONBLOCK|O_NOFOLLOW, 0)) < 0) { + rv = ERR_OPEN; + goto fail; + } + + if (fstat(fd, &st) < 0) { + rv = ERR_STAT; + goto fail; + } + + if (!S_ISREG(st.st_mode) || + (st.st_uid != pwd->pw_uid && st.st_uid != 0)) { + rv = ERR_FILE_MODE; + goto fail; + } + + unset_nonblock(fd); + + if ((f = fdopen(fd, "r")) == NULL) { + rv = ERR_FDOPEN; + goto fail; + } + + fd = -1; + + while ((len = fread(buf, 1, sizeof(buf), f)) > 0) { + rv = fwrite(buf, 1, len, stdout) != len ? ERR_WRITE : 0; + } + +fail: + if (fd != -1) + close(fd); + if (f != NULL) + fclose(f); + free(fname); + restore_uid(); + return rv; +} + +int +main(int argc, char *argv[]) +{ + pam_handle_t *pamh = NULL; + int retval; + int ev = 0; + + if (argc != 2) { + fprintf(stderr, "Usage: %s \n", argv[0]); + return ERR_USAGE; + } + + retval = pam_start("ssh-keycat", argv[1], &conv, &pamh); + if (retval != PAM_SUCCESS) { + return ERR_PAM_START; + } + + retval = pam_open_session(pamh, PAM_SILENT); + if (retval != PAM_SUCCESS) { + ev = ERR_OPEN_SESSION; + goto finish; + } + + ev = dump_keys(argv[1]); + + retval = pam_close_session(pamh, PAM_SILENT); + if (retval != PAM_SUCCESS) { + ev = ERR_CLOSE_SESSION; + } + +finish: + retval = pam_end (pamh,retval); + if (retval != PAM_SUCCESS) { + ev = ERR_PAM_END; + } + return ev; +}