mirror of
https://github.com/falk-werner/webfuse
synced 2024-10-27 20:34:10 +00:00
304 lines
7.1 KiB
C
304 lines
7.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <openssl/conf.h>
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#include <openssl/opensslv.h>
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#include <openssl/engine.h>
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#include <openssl/evp.h>
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#include <jansson.h>
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#include <userdb.h>
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struct args
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{
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char * file;
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char * command;
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char * username;
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char * password;
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char * pepper;
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bool show_help;
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};
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typedef int command_invoke_fn(
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struct args * args);
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struct command
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{
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char const * name;
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command_invoke_fn * invoke;
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};
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static void print_usage(void)
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{
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printf(
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"webfuse-passwd, Copyright (c) 2019, webfuse authors <https://github.com/falk-werner/webfuse>\n"
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"Manage webfuse passwd file\n"
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"\n"
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"Usage: webfuse-passwd -f <file> -c <command> [-u <username>] [-p <password>] [-P <pepper>]\n"
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"\n"
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"Options:\n"
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"\t-f, --file Path of wf passwd file\n"
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"\t-c, --command Command to execute\n"
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"\t-u, --username Name of user\n"
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"\t-p, --password Password of user\n"
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"\t-P, --pepper pepper\n"
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"\t-h, --help Shows this message\n"
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"\n"
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"Commands:\n"
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"\tcreate Creates an empty passwd file (or cleans an existing)\n"
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"\t Example: webfuse-passwd -f passwd.json -c create\n"
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"\tadd Adds or replaces a user\n"
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"\t Example: webfuse-passwd -f passwd.json -c add -u bob -p secret\n"
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"\tremove Removes a user\n"
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"\t Example: webfuse-passwd -f passwd.json -c remove -u bob\n"
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"\tcheck Checks password of a user\n"
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"\t Example: webfuse-passwd -f passwd.json -c check -u bob -p secret\n"
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"\n"
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);
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}
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static int parse_args(struct args * args, int argc, char * argv[])
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{
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static struct option const options[] =
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{
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{"file", required_argument, NULL, 'f'},
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{"command", required_argument, NULL, 'c'},
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{"username", required_argument, NULL, 'u'},
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{"password", required_argument, NULL, 'p'},
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{"Pepper", required_argument, NULL, 'P'},
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{"help", required_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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int result = EXIT_SUCCESS;
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bool finished = false;
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while ((!finished) && (EXIT_SUCCESS == result))
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{
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int option_index = 0;
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int const c = getopt_long(argc, argv, "f:c:u:p:P:h", options, &option_index);
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switch (c)
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{
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case -1:
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finished = true;
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break;
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case 'h':
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args->show_help = true;
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finished = true;
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break;
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case 'f':
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free(args->file);
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args->file = strdup(optarg);
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break;
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case 'c':
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free(args->command);
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args->command = strdup(optarg);
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break;
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case 'u':
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free(args->username);
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args->username = strdup(optarg);
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break;
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case 'p':
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free(args->password);
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args->password = strdup(optarg);
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break;
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case 'P':
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free(args->pepper);
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args->pepper = strdup(optarg);
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break;
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default:
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fprintf(stderr, "error: unknown argument\n");
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result = EXIT_FAILURE;
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break;
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}
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}
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if ((result == EXIT_SUCCESS) && (!args->show_help))
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{
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if (NULL == args->file)
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{
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fprintf(stderr, "error: missing file\n");
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args->show_help = true;
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result = EXIT_FAILURE;
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}
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else if (NULL == args->command)
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{
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fprintf(stderr, "error: missing command\n");
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args->show_help = true;
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result = EXIT_FAILURE;
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}
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}
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return result;
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}
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static void args_init(struct args * args)
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{
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args->file = NULL;
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args->command = NULL;
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args->username = NULL;
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args->password = NULL;
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args->pepper = strdup("");
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args->show_help = false;
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}
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static int create_passwd(struct args * args)
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{
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struct userdb * db = userdb_create(args->pepper);
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bool result = userdb_save(db, args->file);
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userdb_dispose(db);
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return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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static int add_user(struct args * args)
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{
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if (NULL == args->username)
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{
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fprintf(stderr, "error: missing username");
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args->show_help = true;
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return EXIT_FAILURE;
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}
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if (NULL == args->password)
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{
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fprintf(stderr, "error: missing password");
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args->show_help = true;
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return EXIT_FAILURE;
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}
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struct userdb * db = userdb_create(args->pepper);
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userdb_load(db, args->file);
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userdb_add(db, args->username, args->password);
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bool result = userdb_save(db, args->file);
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userdb_dispose(db);
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return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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static int remove_user(struct args * args)
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{
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if (NULL == args->username)
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{
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fprintf(stderr, "error: missing username");
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args->show_help = true;
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return EXIT_FAILURE;
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}
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struct userdb * db = userdb_create(args->pepper);
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userdb_load(db, args->file);
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userdb_remove(db, args->username);
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bool result = userdb_save(db, args->file);
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userdb_dispose(db);
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return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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static int check_password(struct args * args)
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{
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if (NULL == args->username)
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{
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fprintf(stderr, "error: missing username");
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args->show_help = true;
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return EXIT_FAILURE;
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}
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if (NULL == args->password)
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{
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fprintf(stderr, "error: missing password");
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args->show_help = true;
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return EXIT_FAILURE;
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}
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struct userdb * db = userdb_create(args->pepper);
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userdb_load(db, args->file);
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bool result = userdb_check(db, args->username, args->password);
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userdb_dispose(db);
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printf("%s\n", (result) ? "OK" : "FAILURE");
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return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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static int invoke_invalid_command(struct args * args)
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{
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(void) args;
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fprintf(stderr, "error: unknown command\n");
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return EXIT_FAILURE;
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}
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static struct command const commands[] =
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{
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{"create", &create_passwd},
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{"add", &add_user},
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{"remove", &remove_user},
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{"check", &check_password},
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{NULL, NULL}
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};
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static struct command const invalid_command =
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{
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"<invalid>",
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&invoke_invalid_command
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};
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static struct command const * get_command(char const * name)
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{
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for(size_t i = 0; NULL != commands[i].name; i++)
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{
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if (0 == strcmp(name, commands[i].name))
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{
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return &commands[i];
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}
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}
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return &invalid_command;
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}
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static void args_cleanup(struct args * args)
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{
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free(args->file);
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free(args->command);
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free(args->username);
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free(args->password);
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free(args->pepper);
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}
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static void openssl_cleanup(void)
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{
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FIPS_mode_set(0);
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ENGINE_cleanup();
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CONF_modules_unload(1);
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EVP_cleanup();
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CRYPTO_cleanup_all_ex_data();
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ERR_free_strings();
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}
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int main(int argc, char * argv[])
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{
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OPENSSL_init();
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OPENSSL_add_all_algorithms_conf();
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struct args args;
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args_init(&args);
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int result = parse_args(&args, argc, argv);
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if ((EXIT_SUCCESS == result) && (!args.show_help))
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{
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struct command const * command = get_command(args.command);
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result = command->invoke(&args);
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}
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if (args.show_help)
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{
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print_usage();
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}
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args_cleanup(&args);
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openssl_cleanup();
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return result;
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} |