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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:01:37 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:01:37 +0000 |
commit | de848d9e9146434817c65d74d1d0313e9d729462 (patch) | |
tree | dcbd0efb229b17f696f7195671f05b354b4f70fc /libpam_misc/help_env.c | |
parent | Initial commit. (diff) | |
download | pam-de848d9e9146434817c65d74d1d0313e9d729462.tar.xz pam-de848d9e9146434817c65d74d1d0313e9d729462.zip |
Adding upstream version 1.4.0.upstream/1.4.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libpam_misc/help_env.c')
-rw-r--r-- | libpam_misc/help_env.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/libpam_misc/help_env.c b/libpam_misc/help_env.c new file mode 100644 index 0000000..601c5f4 --- /dev/null +++ b/libpam_misc/help_env.c @@ -0,0 +1,88 @@ +/* + * $Id$ + * + * This file was written by Andrew G. Morgan <morgan@parc.power.net> + * + */ + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <security/pam_misc.h> + +/* + * This function should be used to carefully dispose of the copied + * environment. + * + * usage: env = pam_misc_drop_env(env); + */ + +char **pam_misc_drop_env(char **dump) +{ + int i; + + for (i=0; dump[i] != NULL; ++i) { + D(("dump[%d]=`%s'", i, dump[i])); + _pam_overwrite(dump[i]); + _pam_drop(dump[i]); + } + _pam_drop(dump); + + return NULL; +} + +/* + * This function takes the supplied environment and uploads it to be + * the PAM one. + */ + +int pam_misc_paste_env(pam_handle_t *pamh, const char * const * user_env) +{ + for (; user_env && *user_env; ++user_env) { + int retval; + + D(("uploading: %s", *user_env)); + retval = pam_putenv(pamh, *user_env); + if (retval != PAM_SUCCESS) { + D(("error setting %s: %s", *user_env, pam_strerror(pamh,retval))); + return retval; + } + } + D(("done.")); + return PAM_SUCCESS; +} + +/* + * This is a wrapper to make pam behave in the way that setenv() does. + */ + +int pam_misc_setenv(pam_handle_t *pamh, const char *name + , const char *value, int readonly) +{ + char *tmp; + int retval; + + if (readonly) { + const char *etmp; + + /* we check if the variable is there already */ + etmp = pam_getenv(pamh, name); + if (etmp != NULL) { + D(("failed to set readonly variable: %s", name)); + return PAM_PERM_DENIED; /* not allowed to overwrite */ + } + } + if (asprintf(&tmp, "%s=%s", name, value) >= 0) { + D(("pam_putt()ing: %s", tmp)); + retval = pam_putenv(pamh, tmp); + _pam_overwrite(tmp); /* purge */ + _pam_drop(tmp); /* forget */ + } else { + D(("malloc failure")); + retval = PAM_BUF_ERR; + } + + return retval; +} |