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. */
11 #include <openssl/rc4.h>
19 #include "user_list.h"
21 static struct list_head user_list;
24 * Fill the list of users known to para_server.
26 * Populates a linked list of all users in \a user_list_file. Returns on
27 * success, calls exit() on errors.
29 static void populate_user_list(char *user_list_file)
31 int ret = -E_USERLIST;
32 FILE *file_ptr = fopen(user_list_file, "r");
39 /* keyword, name, key, perms */
40 char w[255], n[255], k[255], p[255], tmp[4][255];
44 ret = para_fgets(line, MAXLINE, file_ptr);
47 if (sscanf(line,"%200s %200s %200s %200s", w, n, k, p) < 3)
49 if (strcmp(w, "user"))
51 PARA_DEBUG_LOG("found entry for user %s\n", n);
52 ret = get_rsa_key(k, &rsa, LOAD_PUBLIC_KEY);
54 PARA_NOTICE_LOG("skipping entry for user %s: %s\n", n,
58 if (ret < CHALLENGE_SIZE + 2 * CHALLENGE_SIZE + 41) {
59 PARA_WARNING_LOG("rsa key for %s too small\n", n);
63 u = para_malloc(sizeof(*u));
64 u->name = para_strdup(n);
67 num = sscanf(p, "%200[A-Z_],%200[A-Z_],%200[A-Z_],%200[A-Z_]",
68 tmp[0], tmp[1], tmp[2], tmp[3]);
69 PARA_DEBUG_LOG("found %i perm entries\n", num);
72 if (!strcmp(tmp[num], "VSS_READ"))
74 else if (!strcmp(tmp[num], "VSS_WRITE"))
75 u->perms |= VSS_WRITE;
76 else if (!strcmp(tmp[num], "AFS_READ"))
78 else if (!strcmp(tmp[num], "AFS_WRITE"))
79 u->perms |= AFS_WRITE;
80 else /* unknown permission */
81 PARA_WARNING_LOG("ignoring unknown permission: %s\n",
84 para_list_add(&u->node, &user_list);
90 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
95 * Initialize the list of users allowed to connect to to para_server.
97 * \param user_list_file The file containing access information.
99 * If this function is called for the second time, the contents of the
100 * previous call are discarded, i.e. the user list is reloaded.
102 void init_user_list(char *user_list_file)
104 struct user *u, *tmp;
105 static int initialized;
108 list_for_each_entry_safe(u, tmp, &user_list, node) {
115 INIT_LIST_HEAD(&user_list);
117 populate_user_list(user_list_file);
121 * Lookup a user in the user list.
123 * \param name The name of the user.
125 * \return A pointer to the corresponding user struct if the user was found, \p
128 struct user *lookup_user(const char *name)
131 list_for_each_entry(u, &user_list, node) {
132 if (strcmp(u->name, name))