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Diffstat (limited to '')
| -rw-r--r-- | plugins/group_file/plugin_test.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/plugins/group_file/plugin_test.c b/plugins/group_file/plugin_test.c new file mode 100644 index 0000000..ec47f73 --- /dev/null +++ b/plugins/group_file/plugin_test.c @@ -0,0 +1,222 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2010-2013 Todd C. Miller <Todd.Miller@sudo.ws> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * This is an open source non-commercial project. Dear PVS-Studio, please check it. + * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + */ + +#include <config.h> +#include <ctype.h> +#include <dlfcn.h> +#include <errno.h> +#include <limits.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <sudo_plugin.h> + +sudo_dso_public int main(int argc, char *argv[]); + +/* + * Simple driver to test sudoer group plugins. + * usage: plugin_test [-p "plugin.so plugin_args ..."] user:group ... + */ + +static void *group_handle; +static struct sudoers_group_plugin *group_plugin; + +static int +plugin_printf(int msg_type, const char * restrict fmt, ...) +{ + va_list ap; + FILE *fp; + + switch (msg_type) { + case SUDO_CONV_INFO_MSG: + fp = stdout; + break; + case SUDO_CONV_ERROR_MSG: + fp = stderr; + break; + default: + errno = EINVAL; + return -1; + } + + va_start(ap, fmt); + vfprintf(fp, fmt, ap); + va_end(ap); + + return 0; +} + +/* + * Load the specified plugin and run its init function. + * Returns -1 if unable to open the plugin, else it returns + * the value from the plugin's init function. + */ +static int +group_plugin_load(char *plugin_info) +{ + char *args, path[PATH_MAX], savedch; + char **argv = NULL; + int rc; + + /* + * Fill in .so path and split out args (if any). + */ + if ((args = strpbrk(plugin_info, " \t")) != NULL) { + savedch = *args; + *args = '\0'; + } + if (strlcpy(path, plugin_info, sizeof(path)) >= sizeof(path)) { + fprintf(stderr, "path too long: %s\n", plugin_info); + return -1; + } + if (args != NULL) + *args++ = savedch; + + /* Open plugin and map in symbol. */ + group_handle = dlopen(path, RTLD_LAZY); + if (!group_handle) { + fprintf(stderr, "unable to dlopen %s: %s\n", path, dlerror()); + return -1; + } + group_plugin = dlsym(group_handle, "group_plugin"); + if (group_plugin == NULL) { + fprintf(stderr, "unable to find symbol \"group_plugin\" in %s\n", path); + return -1; + } + + if (SUDO_API_VERSION_GET_MAJOR(group_plugin->version) != GROUP_API_VERSION_MAJOR) { + fprintf(stderr, + "%s: incompatible group plugin major version %u, expected %u\n", + path, SUDO_API_VERSION_GET_MAJOR(group_plugin->version), + GROUP_API_VERSION_MAJOR); + return -1; + } + + /* + * Split args into a vector if specified. + */ + if (args != NULL) { + int ac = 0, wasblank = 1; + char *cp, *last; + + for (cp = args; *cp != '\0'; cp++) { + if (isblank((unsigned char)*cp)) { + wasblank = 1; + } else if (wasblank) { + wasblank = 0; + ac++; + } + } + if (ac != 0) { + argv = malloc((ac + 1) * sizeof(char *)); + if (argv == NULL) { + perror(NULL); + return -1; + } + ac = 0; + cp = strtok_r(args, " \t", &last); + while (cp != NULL) { + argv[ac++] = cp; + cp = strtok_r(NULL, " \t", &last); + } + argv[ac] = NULL; + } + } + + rc = (group_plugin->init)(GROUP_API_VERSION, plugin_printf, argv); + + free(argv); + + return rc; +} + +static void +group_plugin_unload(void) +{ + (group_plugin->cleanup)(); + dlclose(group_handle); + group_handle = NULL; +} + +static int +group_plugin_query(const char *user, const char *group, + const struct passwd *pwd) +{ + return (group_plugin->query)(user, group, pwd); +} + +static void +usage(void) +{ + fputs("usage: plugin_test [-p \"plugin.so plugin_args ...\"] user:group ...\n", + stderr); + exit(EXIT_FAILURE); +} + +int +main(int argc, char *argv[]) +{ + int ch, found; + size_t i; + char *plugin = "group_file.so"; + char *user, *group; + struct passwd *pwd; + + while ((ch = getopt(argc, argv, "p:")) != -1) { + switch (ch) { + case 'p': + plugin = optarg; + break; + default: + usage(); + } + } + argc -= optind; + argv += optind; + + if (argc < 1) + usage(); + + if (group_plugin_load(plugin) != 1) { + fprintf(stderr, "unable to load plugin: %s\n", plugin); + return EXIT_FAILURE; + } + + for (i = 0; argv[i] != NULL; i++) { + user = argv[i]; + group = strchr(argv[i], ':'); + if (group == NULL) + continue; + *group++ = '\0'; + pwd = getpwnam(user); + found = group_plugin_query(user, group, pwd); + printf("user %s %s in group %s\n", user, found ? "is" : "NOT ", group); + } + group_plugin_unload(); + + return EXIT_SUCCESS; +} + |