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If this is what you want to do, use the GNU Lesser General -Public License instead of this License. diff --git a/apps/pam_url/Makefile b/apps/pam_url/Makefile deleted file mode 100644 index 436715e..0000000 --- a/apps/pam_url/Makefile +++ /dev/null @@ -1,41 +0,0 @@ -CFLAGS += -fPIC -Wall - -ifdef DEBUG -CFLAGS += -O0 -ggdb -DDEBUG=1 -else -CFLAGS += -O2 -endif - -LDFLAGS += -shared -lpam -lcurl - -arch := $(shell uname -m) - -obj := pam_url.so -objc := ${obj:%.so=%.c} -objo := ${obj:%.so=%.o} - -ifeq (${arch},x86_64) -pamlib := lib64/security -CFLAGS += -m64 -else -pamlib := lib/security -endif - - -all: ${obj} - -debug: - ${MAKE} DEBUG=1 all - -${obj}: ${objo} - ${CC} ${LDFLAGS} -o ${obj} ${objo} - -clean: - rm -f ${obj} ${objo} - -install: - install -D -m 755 ${obj} ${DESTDIR}/${pamlib}/${obj} - -uninstall: - rm -f ${DESTDIR}/${pamlib}/${obj} - diff --git a/apps/pam_url/examples/auth.php b/apps/pam_url/examples/auth.php deleted file mode 100644 index 4480fdf..0000000 --- a/apps/pam_url/examples/auth.php +++ /dev/null @@ -1,52 +0,0 @@ - PAM_AUTH, PAM_SESS, PAM_ACCT, PAM_PASS -// 2. PSK, Pre Shared Key -// 3. USER -// 4. PASS - -// DO SOURCE IP REGION CHECKS HERE, OTHERWISE BRUTEFORCE attacks might occur!! - -$PSK = "hase"; - -if( isset($_POST["user"]) && isset($_POST["pass"]) && isset($_POST["mode"]) ) -{ - $ret=0; - - switch($_POST["mode"]) - { - case "PAM_SM_AUTH"; - // Perform authing here - break; - - case "PAM_SM_ACCOUNT"; - // Perform account aging here - break; - - case "PAM_SM_SESSION"; - // Perform session management here - break; - - case "PAM_SM_PASSWORD"; - // Perform password changes here - break; - } - - if( 0 == $ret ) - { - header("HTTP/1.1 200 OK"); - echo $PSK; - } - else - { - header("HTTP/1.1 400 Bad Request"); - echo "ACCESS DENIED"; - } -} -else -{ - header("HTTP/1.1 403 Forbidden"); - echo "ACCESS DENIED"; -} -?> diff --git a/apps/pam_url/pam_url.c b/apps/pam_url/pam_url.c deleted file mode 100644 index 7f04d33..0000000 --- a/apps/pam_url/pam_url.c +++ /dev/null @@ -1,639 +0,0 @@ -/* - * pam_url - authenticate against webservers - * - * This software is opensource software licensed under the GNU Public License version 2. - * The author of this software is Sascha Thomas Spreitzer . - * Please take a look in the COPYING, INSTALL and README files. - * - * USE THIS SOFTWARE WITH ABSOLUTELY NO GUARANTEE AND WARRANTY - * - * - * /etc/pam.d/sshd or /etc/pam.d/system-auth: - * - * [...] - * auth sufficient pam_url.so https://www.example.org/ secret user passwd &do=login - * auth sufficient pam_url.so URL PSK USER PASSWD EXTRA - * [...] - * This module takes 4 arguments: - * - URL = HTTPS URL - * - PSK = Pre Shared Key - * - USER = The name of the user variable - * - PASSWD = The name of the password variable - * - EXTRA = additional url encoded data - * - * auth sufficient pam_url.so https://www.example.org/ secret user passwd &do=auth - * This line forms the following url encoded POST data: - * user=&passwd=&mode=&PSK=secret&do=auth - * It should return either 200 OK with PSK in the body or 403 Forbidden if unsuccessful. - */ - -#ifndef NAME - #define NAME "pam_url" -#endif - -#ifndef VERS - #define VERS "0.0" -#endif - -#ifndef USER_AGENT - #define USER_AGENT NAME "/" VERS -#endif - -#define PAM_SM_AUTH 1 -#define PAM_SM_ACCOUNT 2 -#define PAM_SM_SESSION 3 -#define PAM_SM_PASSWORD 4 - -#include -#include - -#ifndef _SECURITY_PAM_MODULES_H - #error PAM headers not found on this system. Giving up. -#endif - -#include -#ifndef __CURL_CURL_H - #error libcurl headers not found on this system. Giving up. -#endif - -#include -#include -#include -#include - -#ifndef DEF_URL - #define DEF_URL "https://www.example.org/" -#endif - -#ifndef DEF_PSK - #define DEF_PSK "presharedsecret" -#endif - -#ifndef DEF_USER - #define DEF_USER "user" -#endif - -#ifndef DEF_PASSWD - #define DEF_PASSWD "passwd" -#endif - -#ifndef DEF_EXTRA - #define DEF_EXTRA "&do=pam_url" -#endif - -typedef struct pam_url_opts_ { - char* url; - char* PSK; - char* userfield; - char* passwdfield; - char* extrafield; - char* mode; - - const void* user; - const void* passwd; -} pam_url_opts; - -char* recvbuf = NULL; -size_t recvbuf_size = 0; - -void notice(pam_handle_t* pamh, const char *msg) -{ - pam_syslog(pamh, LOG_NOTICE, "%s", msg); -} - -void debug(pam_handle_t* pamh, const char *msg) -{ -#ifdef DEBUG - pam_syslog(pamh, LOG_ERR, "%s", msg); -#endif -} - -int get_password(pam_handle_t* pamh, pam_url_opts* opts) -{ - char* p = NULL; - pam_prompt(pamh, PAM_PROMPT_ECHO_OFF, &p, "%s", "Password: "); - - if( NULL != p ) - { - opts->passwd = p; - return PAM_SUCCESS; - } - else - { - return PAM_AUTH_ERR; - } -} - -int parse_opts(pam_url_opts* opts, int argc, const char** argv, int mode) -{ - opts->url = calloc(1, strlen(DEF_URL) + 1); - strcpy(opts->url, DEF_URL); - - opts->PSK = calloc(1, strlen(DEF_PSK) + 1); - strcpy(opts->PSK, DEF_PSK); - - opts->userfield = calloc(1, strlen(DEF_USER) + 1); - strcpy(opts->userfield, DEF_USER); - - opts->passwdfield = calloc(1, strlen(DEF_PASSWD) + 1); - strcpy(opts->passwdfield, DEF_PASSWD); - - opts->extrafield = calloc(1, strlen(DEF_EXTRA) + 1); - strcpy(opts->extrafield, DEF_EXTRA); - - if( 0 == argc ) - { - return PAM_SUCCESS; - } - - if( argc >= 1 ) - { - opts->url = calloc(1, strlen(argv[0]) + 1); - strcpy(opts->url, argv[0]); - } - - if( argc >= 2 ) - { - opts->PSK = calloc(1, strlen(argv[1]) +1); - strcpy(opts->PSK, argv[1]); - } - - if( argc >= 3 ) - { - opts->userfield = calloc(1, strlen(argv[2]) + 1); - strcpy(opts->userfield, argv[2]); - } - - if( argc >= 4 ) - { - opts->passwdfield = calloc(1, strlen(argv[3]) + 1); - strcpy(opts->passwdfield, argv[3]); - } - - if( argc >= 5 ) - { - opts->extrafield = calloc(1, strlen(argv[4]) + 1); - strcpy(opts->extrafield, argv[4]); - } - - switch(mode) - { - case PAM_SM_ACCOUNT: - opts->mode = calloc(1, strlen("PAM_SM_ACCOUNT") + 1); - strcpy(opts->mode, "PAM_SM_ACCOUNT"); - break; - - case PAM_SM_SESSION: - opts->mode = calloc(1, strlen("PAM_SM_SESSION") + 1); - strcpy(opts->mode, "PAM_SM_SESSION"); - break; - - case PAM_SM_PASSWORD: - opts->mode = calloc(1, strlen("PAM_SM_PASSWORD") + 1); - strcpy(opts->mode, "PAM_SM_PASSWORD"); - break; - - default: // PAM_SM_AUTH - opts->mode = calloc(1, strlen("PAM_SM_AUTH") + 1); - strcpy(opts->mode,"PAM_SM_AUTH"); - } - - return PAM_SUCCESS; -} - -size_t curl_wf(void *ptr, size_t size, size_t nmemb, void *stream) -{ - size_t oldsize=0; - - if( 0 == size * nmemb ) - return 0; - - if( NULL == recvbuf ) - { - if( NULL == ( recvbuf = calloc(nmemb, size) ) ) - { - return 0; - } - } - - if( NULL == ( recvbuf = realloc(recvbuf, recvbuf_size + (nmemb * size)) ) ) - { - return 0; - } - else - { - oldsize=recvbuf_size; - recvbuf_size += nmemb * size; - memcpy(recvbuf + oldsize, ptr, size * nmemb); - return(size*nmemb); - } -} - -int fetch_url(pam_url_opts opts) -{ - CURL* eh = NULL; - char* post = NULL; - - if( NULL == opts.user ) - opts.user = calloc(1,1); - - if( NULL == opts.passwd ) - opts.passwd = calloc(1,1); - - post = calloc(1,strlen(opts.userfield) + - strlen("=") + - strlen(opts.user) + - strlen("&") + - strlen(opts.passwdfield) + - strlen("=") + - strlen(opts.passwd) + - strlen("&mode=") + - strlen(opts.mode) + - strlen(opts.extrafield) + - strlen("\0") ); - - sprintf(post, "%s=%s&%s=%s&mode=%s%s", opts.userfield, - (char*)opts.user, - opts.passwdfield, - (char*)opts.passwd, - opts.mode, - opts.extrafield); - - if( 0 != curl_global_init(CURL_GLOBAL_ALL) ) - return PAM_AUTH_ERR; - - if( NULL == (eh = curl_easy_init() ) ) - return PAM_AUTH_ERR; - -#ifdef DEBUG - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_VERBOSE, 1) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } -#endif - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_POSTFIELDS, post) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_USERAGENT, USER_AGENT) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_WRITEFUNCTION, curl_wf) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_URL, opts.url) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_SSL_VERIFYHOST, 2) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_SSL_VERIFYPEER, 1) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_setopt(eh, CURLOPT_FAILONERROR, 1) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - - if( CURLE_OK != curl_easy_perform(eh) ) - { - curl_easy_cleanup(eh); - return PAM_AUTH_ERR; - } - else - { - curl_easy_cleanup(eh); - return PAM_SUCCESS; - } -} - -int check_psk(pam_url_opts opts) -{ - int ret=0; - - if( NULL == recvbuf ) - { - ret++; - return PAM_AUTH_ERR; - } - - if( 0 != memcmp(opts.PSK, recvbuf, strlen(opts.PSK)) ) - ret++; - - if( 0 != ret ) - { - return PAM_AUTH_ERR; - } - else - { - return PAM_SUCCESS; - } -} - -void cleanup(pam_url_opts opts) -{ - if( NULL != recvbuf ) - free(recvbuf); - - recvbuf_size=0; -} - -PAM_EXTERN int pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ // by now, a dummy - return PAM_SUCCESS; -} - -PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, int flags, - int argc, const char **argv) -{ - pam_url_opts opts; - - int ret = 0; - - if ( PAM_SUCCESS != pam_get_item(pamh, PAM_USER, &opts.user) ) - { - ret++; - debug(pamh, "Could not get user item from pam."); - } - - if( PAM_SUCCESS != pam_get_item(pamh, PAM_AUTHTOK, &opts.passwd) ) - { - ret++; - debug(pamh, "Could not get password item from pam."); - } - - if( NULL == opts.passwd ) - { - debug(pamh, "No password. Will ask user for it."); - if( PAM_SUCCESS != get_password(pamh, &opts) ) - { - debug(pamh, "Could not get password from user. No TTY?"); - return PAM_AUTH_ERR; - } - else - { - pam_set_item(pamh, PAM_AUTHTOK, opts.passwd); - } - } - - if( PAM_SUCCESS != parse_opts(&opts, argc, argv, PAM_SM_AUTH) ) - { - ret++; - debug(pamh, "Could not parse module options."); - } - - if( PAM_SUCCESS != fetch_url(opts) ) - { - ret++; - debug(pamh, "Could not fetch URL."); - } - - if( PAM_SUCCESS != check_psk(opts) ) - { - ret++; - debug(pamh, "Pre Shared Key differs from ours."); - } - - if( 0 == ret ) - return PAM_SUCCESS; - - debug(pamh, "Authentication failed."); - cleanup(opts); - - return PAM_AUTH_ERR; -} - -PAM_EXTERN int pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - pam_url_opts opts; - int ret=0; - - if ( PAM_SUCCESS != pam_get_item(pamh, PAM_USER, &opts.user) ) - { - ret++; - debug(pamh, "Could not get user item from pam."); - } - - if( PAM_SUCCESS != parse_opts(&opts, argc, argv, PAM_SM_ACCOUNT) ) - { - ret++; - debug(pamh, "Could not parse module options."); - } - - if( PAM_SUCCESS != fetch_url(opts) ) - { - ret++; - debug(pamh, "Could not fetch URL."); - } - - if( PAM_SUCCESS != check_psk(opts) ) - { - ret++; - debug(pamh, "Pre Shared Key differs from ours."); - } - - if( 0 == ret ) - return PAM_SUCCESS; - - debug(pamh, "Account aged out. Failing."); - - cleanup(opts); - - return PAM_PERM_DENIED; -} - -PAM_EXTERN int pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - pam_url_opts opts; - int ret=0; - char* addextra = "&PAM_SM_SESSION=open\0"; - char* tmp = NULL; - - if ( PAM_SUCCESS != pam_get_item(pamh, PAM_USER, &opts.user) ) - { - ret++; - debug(pamh, "Could not get user item from pam."); - } - - if( PAM_SUCCESS != parse_opts(&opts, argc, argv, PAM_SM_SESSION) ) - { - ret++; - debug(pamh, "Could not parse module options."); - } - - opts.extrafield = realloc(opts.extrafield, strlen(opts.extrafield) + strlen(addextra) + 1); - tmp = calloc(1, strlen(opts.extrafield) ); - sprintf(tmp, "%s", opts.extrafield ); - sprintf(opts.extrafield, "%s%s", addextra, tmp); - free(tmp); - - if( PAM_SUCCESS != fetch_url(opts) ) - { - ret++; - debug(pamh, "Could not fetch URL."); - } - - if( PAM_SUCCESS != check_psk(opts) ) - { - ret++; - debug(pamh, "Pre Shared Key differs from ours."); - } - - if( 0 == ret ) - return PAM_SUCCESS; - - debug(pamh, "Session not registering. Failing."); - - cleanup(opts); - - return PAM_SESSION_ERR; -} - -PAM_EXTERN int pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - pam_url_opts opts; - int ret=0; - char* addextra = "&PAM_SM_SESSION=close\0"; - char* tmp = NULL; - - if ( PAM_SUCCESS != pam_get_item(pamh, PAM_USER, &opts.user) ) - { - ret++; - debug(pamh, "Could not get user item from pam."); - } - - if( PAM_SUCCESS != parse_opts(&opts, argc, argv, PAM_SM_SESSION) ) - { - ret++; - debug(pamh, "Could not parse module options."); - } - - opts.extrafield = realloc(opts.extrafield, strlen(opts.extrafield) + strlen(addextra) + 1); - tmp = calloc(1, strlen(opts.extrafield) ); - sprintf(tmp, "%s", opts.extrafield ); - sprintf(opts.extrafield, "%s%s", addextra, tmp); - free(tmp); - - if( PAM_SUCCESS != fetch_url(opts) ) - { - ret++; - debug(pamh, "Could not fetch URL."); - } - - if( PAM_SUCCESS != check_psk(opts) ) - { - ret++; - debug(pamh, "Pre Shared Key differs from ours."); - } - - if( 0 == ret ) - return PAM_SUCCESS; - - debug(pamh, "Session not releasing. Failing."); - - cleanup(opts); - - return PAM_SESSION_ERR; -} - -PAM_EXTERN int pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - pam_url_opts opts; - int ret=0; - char *newp1 = NULL, *newp2 = NULL; - char *tmp = NULL; - - if( PAM_PRELIM_CHECK == flags ) - { // TODO: Connection checks? - return PAM_SUCCESS; - } - - if ( PAM_SUCCESS != pam_get_item(pamh, PAM_USER, &opts.user) ) - { - ret++; - debug(pamh, "Could not get user item from pam."); - } - - if( PAM_SUCCESS != parse_opts(&opts, argc, argv, PAM_SM_PASSWORD) ) - { - ret++; - debug(pamh, "Could not parse module options."); - } - - pam_get_item(pamh, PAM_OLDAUTHTOK, &opts.passwd); - if( NULL == opts.passwd ) - { - pam_prompt(pamh, PAM_PROMPT_ECHO_OFF, &opts.passwd, "%s", " CURRENT password: "); - } - - pam_get_item(pamh, PAM_AUTHTOK, &newp1); - if( NULL == newp1 ) - { - pam_prompt(pamh, PAM_PROMPT_ECHO_OFF, &newp1, "%s"," Enter NEW password: "); - pam_prompt(pamh, PAM_PROMPT_ECHO_OFF, &newp2, "%s","Retype NEW password: "); - if( 0 != strcmp(newp1,newp2) ) - { - ret++; - return PAM_AUTHTOK_ERR; - } - } - - opts.extrafield = realloc(opts.extrafield, strlen(opts.extrafield) + - strlen("&newpass=") + - strlen(newp1) + 1); - tmp = calloc(1, strlen(opts.extrafield) ); - sprintf(tmp, "%s", opts.extrafield ); - sprintf(opts.extrafield, "&newpass=%s%s", newp1, tmp); - free(tmp); - - if( PAM_SUCCESS != fetch_url(opts) ) - { - ret++; - debug(pamh, "Could not fetch URL."); - } - - if( PAM_SUCCESS != check_psk(opts) ) - { - ret++; - debug(pamh, "Pre Shared Key differs from ours."); - } - - cleanup(opts); - - if( 0 == ret ) - { - return PAM_SUCCESS; - } - else - { - debug(pamh, "Password change failed."); - return PAM_AUTHTOK_ERR; - } -} - - - -/* - * vim: nu paste - */ - diff --git a/apps/pam_url/pam_url.spec b/apps/pam_url/pam_url.spec deleted file mode 100644 index eb1cb67..0000000 --- a/apps/pam_url/pam_url.spec +++ /dev/null @@ -1,36 +0,0 @@ -Summary: PAM module to fetch from URL. -Name: pam_url -Version: 0 -Release: 1 -License: GPLv2 -Group: System Environment/Base -Source: %{name}-%{version}.%{release}.tar.bz2 -BuildRoot: /var/tmp/%{name}-root -Requires: pam libcurl -BuildRequires: pam-devel libcurl-devel - -%description -PAM module to fetch from URL. - -%prep -%setup -n %{name} - -%build -make DEBUG=1 DESTDIR=%{buildroot} all - -%install -make DESTDIR=%{buildroot} install -(cd %{buildroot} -find . -type f -iname '*.so' | sed 's/^\.//g' > /var/tmp/%{name}-files -cd -) - -%clean -rm -rf $RPM_BUILD_ROOT - -%files -f /var/tmp/%{name}-files -%defattr(-,root,root) - -%changelog -* Sun May 03 2009 Sascha Thomas Spreitzer -- First shot of rpm spec. -