diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/Makefile.am | 2 | ||||
| -rw-r--r-- | examples/Makefile.in | 33 | ||||
| -rw-r--r-- | examples/tty_conv.c | 177 | ||||
| -rw-r--r-- | examples/xsh.c | 2 |
4 files changed, 207 insertions, 7 deletions
diff --git a/examples/Makefile.am b/examples/Makefile.am index 722ec686..c4c3c261 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -11,4 +11,4 @@ AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \ LDADD = $(top_builddir)/libpam/libpam.la \ $(top_builddir)/libpam_misc/libpam_misc.la -noinst_PROGRAMS = xsh vpass blank check_user +noinst_PROGRAMS = xsh vpass blank check_user tty_conv diff --git a/examples/Makefile.in b/examples/Makefile.in index 456544f6..25bf4203 100644 --- a/examples/Makefile.in +++ b/examples/Makefile.in @@ -93,7 +93,7 @@ POST_UNINSTALL = : build_triplet = @build@ host_triplet = @host@ noinst_PROGRAMS = xsh$(EXEEXT) vpass$(EXEEXT) blank$(EXEEXT) \ - check_user$(EXEEXT) + check_user$(EXEEXT) tty_conv$(EXEEXT) subdir = examples ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 am__aclocal_m4_deps = $(top_srcdir)/m4/attribute.m4 \ @@ -133,6 +133,11 @@ check_user_OBJECTS = check_user.$(OBJEXT) check_user_LDADD = $(LDADD) check_user_DEPENDENCIES = $(top_builddir)/libpam/libpam.la \ $(top_builddir)/libpam_misc/libpam_misc.la +tty_conv_SOURCES = tty_conv.c +tty_conv_OBJECTS = tty_conv.$(OBJEXT) +tty_conv_LDADD = $(LDADD) +tty_conv_DEPENDENCIES = $(top_builddir)/libpam/libpam.la \ + $(top_builddir)/libpam_misc/libpam_misc.la vpass_SOURCES = vpass.c vpass_OBJECTS = vpass.$(OBJEXT) vpass_LDADD = $(LDADD) @@ -159,7 +164,8 @@ DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir) depcomp = $(SHELL) $(top_srcdir)/build-aux/depcomp am__maybe_remake_depfiles = depfiles am__depfiles_remade = ./$(DEPDIR)/blank.Po ./$(DEPDIR)/check_user.Po \ - ./$(DEPDIR)/vpass.Po ./$(DEPDIR)/xsh.Po + ./$(DEPDIR)/tty_conv.Po ./$(DEPDIR)/vpass.Po \ + ./$(DEPDIR)/xsh.Po am__mv = mv -f COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) @@ -179,8 +185,8 @@ AM_V_CCLD = $(am__v_CCLD_@AM_V@) am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@) am__v_CCLD_0 = @echo " CCLD " $@; am__v_CCLD_1 = -SOURCES = blank.c check_user.c vpass.c xsh.c -DIST_SOURCES = blank.c check_user.c vpass.c xsh.c +SOURCES = blank.c check_user.c tty_conv.c vpass.c xsh.c +DIST_SOURCES = blank.c check_user.c tty_conv.c vpass.c xsh.c am__can_run_installinfo = \ case $$AM_UPDATE_INFO_DIR in \ n|no|NO) false;; \ @@ -233,6 +239,7 @@ CYGPATH_W = @CYGPATH_W@ DEFS = @DEFS@ DEPDIR = @DEPDIR@ DLLTOOL = @DLLTOOL@ +DOCBOOK_RNG = @DOCBOOK_RNG@ DSYMUTIL = @DSYMUTIL@ DUMPBIN = @DUMPBIN@ ECHO_C = @ECHO_C@ @@ -245,11 +252,13 @@ EXEEXT = @EXEEXT@ EXE_CFLAGS = @EXE_CFLAGS@ EXE_LDFLAGS = @EXE_LDFLAGS@ FGREP = @FGREP@ +FILECMD = @FILECMD@ FO2PDF = @FO2PDF@ GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@ GMSGFMT = @GMSGFMT@ GMSGFMT_015 = @GMSGFMT_015@ GREP = @GREP@ +HTML_STYLESHEET = @HTML_STYLESHEET@ INSTALL = @INSTALL@ INSTALL_DATA = @INSTALL_DATA@ INSTALL_PROGRAM = @INSTALL_PROGRAM@ @@ -281,12 +290,14 @@ LIBSELINUX = @LIBSELINUX@ LIBTOOL = @LIBTOOL@ LIPO = @LIPO@ LN_S = @LN_S@ +LOGIND_CFLAGS = @LOGIND_CFLAGS@ LTLIBICONV = @LTLIBICONV@ LTLIBINTL = @LTLIBINTL@ LTLIBOBJS = @LTLIBOBJS@ LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@ MAKEINFO = @MAKEINFO@ MANIFEST_TOOL = @MANIFEST_TOOL@ +MAN_STYLESHEET = @MAN_STYLESHEET@ MKDIR_P = @MKDIR_P@ MSGFMT = @MSGFMT@ MSGFMT_015 = @MSGFMT_015@ @@ -309,6 +320,7 @@ PACKAGE_TARNAME = @PACKAGE_TARNAME@ PACKAGE_URL = @PACKAGE_URL@ PACKAGE_VERSION = @PACKAGE_VERSION@ PATH_SEPARATOR = @PATH_SEPARATOR@ +PDF_STYLESHEET = @PDF_STYLESHEET@ PKG_CONFIG = @PKG_CONFIG@ PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@ PKG_CONFIG_PATH = @PKG_CONFIG_PATH@ @@ -319,12 +331,16 @@ SECUREDIR = @SECUREDIR@ SED = @SED@ SET_MAKE = @SET_MAKE@ SHELL = @SHELL@ -STRINGPARAM_HMAC = @STRINGPARAM_HMAC@ +STRINGPARAM_PROFILECONDITIONS = @STRINGPARAM_PROFILECONDITIONS@ STRINGPARAM_VENDORDIR = @STRINGPARAM_VENDORDIR@ STRIP = @STRIP@ +SYSTEMD_CFLAGS = @SYSTEMD_CFLAGS@ +SYSTEMD_LIBS = @SYSTEMD_LIBS@ TIRPC_CFLAGS = @TIRPC_CFLAGS@ TIRPC_LIBS = @TIRPC_LIBS@ +TXT_STYLESHEET = @TXT_STYLESHEET@ USE_NLS = @USE_NLS@ +VENDOR_SCONFIGDIR = @VENDOR_SCONFIGDIR@ VERSION = @VERSION@ WARN_CFLAGS = @WARN_CFLAGS@ XGETTEXT = @XGETTEXT@ @@ -449,6 +465,10 @@ check_user$(EXEEXT): $(check_user_OBJECTS) $(check_user_DEPENDENCIES) $(EXTRA_ch @rm -f check_user$(EXEEXT) $(AM_V_CCLD)$(LINK) $(check_user_OBJECTS) $(check_user_LDADD) $(LIBS) +tty_conv$(EXEEXT): $(tty_conv_OBJECTS) $(tty_conv_DEPENDENCIES) $(EXTRA_tty_conv_DEPENDENCIES) + @rm -f tty_conv$(EXEEXT) + $(AM_V_CCLD)$(LINK) $(tty_conv_OBJECTS) $(tty_conv_LDADD) $(LIBS) + vpass$(EXEEXT): $(vpass_OBJECTS) $(vpass_DEPENDENCIES) $(EXTRA_vpass_DEPENDENCIES) @rm -f vpass$(EXEEXT) $(AM_V_CCLD)$(LINK) $(vpass_OBJECTS) $(vpass_LDADD) $(LIBS) @@ -465,6 +485,7 @@ distclean-compile: @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/blank.Po@am__quote@ # am--include-marker @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/check_user.Po@am__quote@ # am--include-marker +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tty_conv.Po@am__quote@ # am--include-marker @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vpass.Po@am__quote@ # am--include-marker @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xsh.Po@am__quote@ # am--include-marker @@ -629,6 +650,7 @@ clean-am: clean-generic clean-libtool clean-noinstPROGRAMS \ distclean: distclean-am -rm -f ./$(DEPDIR)/blank.Po -rm -f ./$(DEPDIR)/check_user.Po + -rm -f ./$(DEPDIR)/tty_conv.Po -rm -f ./$(DEPDIR)/vpass.Po -rm -f ./$(DEPDIR)/xsh.Po -rm -f Makefile @@ -678,6 +700,7 @@ installcheck-am: maintainer-clean: maintainer-clean-am -rm -f ./$(DEPDIR)/blank.Po -rm -f ./$(DEPDIR)/check_user.Po + -rm -f ./$(DEPDIR)/tty_conv.Po -rm -f ./$(DEPDIR)/vpass.Po -rm -f ./$(DEPDIR)/xsh.Po -rm -f Makefile diff --git a/examples/tty_conv.c b/examples/tty_conv.c new file mode 100644 index 00000000..23f0684c --- /dev/null +++ b/examples/tty_conv.c @@ -0,0 +1,177 @@ +/* PlanC (hubenchang0515@outlook.com) -- an example application + * that implements a custom conversation */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <termio.h> +#include <security/pam_appl.h> + +/*************************************** + * @brief echo off/on + * @param[in] fd file descriptor + * @param[in] off 1 - echo off，0 - echo on + ***************************************/ +static void echoOff(int fd, int off) +{ + struct termio tty; + if (ioctl(fd, TCGETA, &tty) < 0) + { + fprintf(stderr, "TCGETA failed: %s\n", strerror(errno)); + return; + } + + if (off) + { + tty.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); + if (ioctl(fd, TCSETAF, &tty) < 0) + { + fprintf(stderr, "TCSETAF failed: %s\n", strerror(errno)); + } + } + else + { + tty.c_lflag |= (ECHO | ECHOE | ECHOK | ECHONL); + if (ioctl(fd, TCSETAW, &tty) < 0) + { + fprintf(stderr, "TCSETAW failed: %s\n", strerror(errno)); + } + } +} + +/*************************************** + * @brief echo off stdin + ***************************************/ +static void echoOffStdin(void) +{ + echoOff(fileno(stdin), 1); +} + +/*************************************** + * @brief echo on stdin + ***************************************/ +static void echoOnStdin(void) +{ + echoOff(fileno(stdin), 0); +} + +/*************************************** + * @brief read a line input + * @return the input string + ***************************************/ +static char *readline(void) +{ + char input[PAM_MAX_RESP_SIZE]; + int i; + + flockfile(stdin); + for (i = 0; i < PAM_MAX_RESP_SIZE; i++) + { + int ch = getchar_unlocked(); + if (ch == '\n' || ch == '\r' ||ch == EOF) + break; + input[i] = ch; + } + funlockfile(stdin); + input[i] = '\0'; + + return (strdup(input)); +} + +/************************************************** + * @brief callback of PAM conversation + * @param[in] num_msg the count of message + * @param[in] msg PAM message + * @param[out] resp our response + * @param[in] appdata_ptr custom data passed by struct pam_conv.appdata_ptr + * @return state + **************************************************/ +static int conversation(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr) +{ + (void)(appdata_ptr); + int i; + + /* check the count of message */ + if (num_msg <= 0 || num_msg >= PAM_MAX_MSG_SIZE) + { + fprintf(stderr, "invalid num_msg(%d)\n", num_msg); + return PAM_CONV_ERR; + } + + /* alloc memory for response */ + if ((resp[0] = malloc(num_msg * sizeof(struct pam_response))) == NULL) + { + fprintf(stderr, "bad alloc\n"); + return PAM_BUF_ERR; + } + + /* response for message */ + for (i = 0; i < num_msg; i++) + { + const struct pam_message *m = *msg + i; + struct pam_response *r = *resp + i; + r->resp_retcode = 0; /* currently un-used, zero expected */ + switch (m->msg_style) + { + case PAM_PROMPT_ECHO_OFF: /* get the input with echo off, like the password */ + printf("%s", m->msg); + echoOffStdin(); + r->resp = readline(); + echoOnStdin(); + printf("\n"); + break; + + case PAM_PROMPT_ECHO_ON: /* get the input with echo on, like the username */ + printf("%s", m->msg); + r->resp = readline(); + break; + + case PAM_TEXT_INFO: /* normal info */ + printf("%s\n", m->msg); + break; + + case PAM_ERROR_MSG: /* error info */ + fprintf(stderr, "%s\n", m->msg); + break; + + default: + fprintf(stderr, "unexpected msg_style: %d\n", m->msg_style); + break; + } + } + return PAM_SUCCESS; +} + +int main(void) +{ + struct pam_conv pam_conv = {conversation, NULL}; + pam_handle_t *pamh; + + /* echo on while exist, like Ctrl+C on input password */ + atexit(echoOnStdin); + + if (PAM_SUCCESS != pam_start("login", NULL, &pam_conv, &pamh)) + { + fprintf(stderr, "pam_start failed\n"); + return EXIT_FAILURE; + } + + if (PAM_SUCCESS != pam_authenticate(pamh, 0)) + { + fprintf(stderr, "pam_authenticate failed\n"); + pam_end(pamh, 0); + return EXIT_FAILURE; + } + + if (PAM_SUCCESS != pam_acct_mgmt(pamh, 0)) + { + fprintf(stderr, "pam_acct_mgmt failed\n"); + pam_end(pamh, 0); + return EXIT_FAILURE; + } + + pam_end(pamh, 0); + return EXIT_SUCCESS; +} diff --git a/examples/xsh.c b/examples/xsh.c index ef4dca0c..5b34fc17 100644 --- a/examples/xsh.c +++ b/examples/xsh.c @@ -80,7 +80,7 @@ int main(int argc, char **argv) tty = ttyname(fileno(stdin)); if (tty) { retcode = pam_set_item(pamh, PAM_TTY, tty); - bail_out(pamh,1,retcode,"pam_set_item(PAM_RHOST)"); + bail_out(pamh,1,retcode,"pam_set_item(PAM_TTY)"); } } |