2 * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file user_list.c User handling for para_server. */
10 #include <sys/types.h>
12 #include <openssl/rc4.h>
20 #include "user_list.h"
22 static struct list_head user_list;
25 * Fill the list of users known to para_server.
27 * Populates a linked list of all users in \a user_list_file. Returns on
28 * success, calls exit() on errors.
30 static void populate_user_list(char *user_list_file)
32 int ret = -E_USERLIST;
33 FILE *file_ptr = fopen(user_list_file, "r");
40 /* keyword, name, key, perms */
41 char w[255], n[255], k[255], p[255], tmp[4][255];
45 ret = para_fgets(line, MAXLINE, file_ptr);
48 if (sscanf(line,"%200s %200s %200s %200s", w, n, k, p) < 3)
50 if (strcmp(w, "user"))
52 PARA_DEBUG_LOG("found entry for user %s\n", n);
53 ret = get_rsa_key(k, &rsa, LOAD_PUBLIC_KEY);
55 PARA_NOTICE_LOG("skipping entry for user %s: %s\n", n,
59 if (ret < CHALLENGE_SIZE + 2 * CHALLENGE_SIZE + 41) {
60 PARA_WARNING_LOG("rsa key for %s too small\n", n);
64 u = para_malloc(sizeof(*u));
65 u->name = para_strdup(n);
68 num = sscanf(p, "%200[A-Z_],%200[A-Z_],%200[A-Z_],%200[A-Z_]",
69 tmp[0], tmp[1], tmp[2], tmp[3]);
70 PARA_DEBUG_LOG("found %i perm entries\n", num);
73 if (!strcmp(tmp[num], "VSS_READ"))
75 else if (!strcmp(tmp[num], "VSS_WRITE"))
76 u->perms |= VSS_WRITE;
77 else if (!strcmp(tmp[num], "AFS_READ"))
79 else if (!strcmp(tmp[num], "AFS_WRITE"))
80 u->perms |= AFS_WRITE;
81 else /* unknown permission */
82 PARA_WARNING_LOG("ignoring unknown permission: %s\n",
85 para_list_add(&u->node, &user_list);
91 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
96 * Initialize the list of users allowed to connect to to para_server.
98 * \param user_list_file The file containing access information.
100 * If this function is called for the second time, the contents of the
101 * previous call are discarded, i.e. the user list is reloaded.
103 void init_user_list(char *user_list_file)
105 struct user *u, *tmp;
106 static int initialized;
109 list_for_each_entry_safe(u, tmp, &user_list, node) {
116 INIT_LIST_HEAD(&user_list);
118 populate_user_list(user_list_file);
122 * Lookup a user in the user list.
124 * \param name The name of the user.
126 * \return A pointer to the corresponding user struct if the user was found, \p
129 struct user *lookup_user(const char *name)
132 list_for_each_entry(u, &user_list, node) {
133 if (strcmp(u->name, name))