From 5e1a84ab74d5e97582427f016f291a8c11e66f99 Mon Sep 17 00:00:00 2001 From: jutteau Date: Fri, 11 May 2007 18:10:19 +0000 Subject: Completion du script de mise à jour de la pc-104 : * Ajout des sources de busybox dans ./conf/busybox/ * Ajout d'un fichier réclamé par les script dans ./conf/busybox.links --- i/pc104/initrd/conf/busybox/libpwdgrp/uidgid_get.c | 133 +++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 i/pc104/initrd/conf/busybox/libpwdgrp/uidgid_get.c (limited to 'i/pc104/initrd/conf/busybox/libpwdgrp/uidgid_get.c') diff --git a/i/pc104/initrd/conf/busybox/libpwdgrp/uidgid_get.c b/i/pc104/initrd/conf/busybox/libpwdgrp/uidgid_get.c new file mode 100644 index 0000000..f10b406 --- /dev/null +++ b/i/pc104/initrd/conf/busybox/libpwdgrp/uidgid_get.c @@ -0,0 +1,133 @@ +/* +Copyright (c) 2001-2006, Gerrit Pape +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED +WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO +EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; +OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR +OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF +ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#include "busybox.h" + +/* Always sets uid and gid */ +int get_uidgid(struct bb_uidgid_t *u, const char *ug, int numeric_ok) +{ + struct passwd *pwd; + struct group *gr; + char *user, *group; + unsigned n; + + user = (char*)ug; + group = strchr(ug, ':'); + if (group) { + int sz = (++group) - ug; + user = alloca(sz); + /* copies sz-1 bytes, stores terminating '\0' */ + safe_strncpy(user, ug, sz); + } + if (numeric_ok) { + n = bb_strtou(user, NULL, 10); + if (!errno) { + u->uid = n; + pwd = getpwuid(n); + /* If we have e.g. "500" string without user */ + /* with uid 500 in /etc/passwd, we set gid == uid */ + u->gid = pwd ? pwd->pw_gid : n; + goto skip; + } + } + /* Either it is not numeric, or caller disallows numeric username */ + pwd = getpwnam(user); + if (!pwd) + return 0; + u->uid = pwd->pw_uid; + u->gid = pwd->pw_gid; + + skip: + if (group) { + if (numeric_ok) { + n = bb_strtou(group, NULL, 10); + if (!errno) { + u->gid = n; + return 1; + } + } + gr = getgrnam(group); + if (!gr) return 0; + u->gid = gr->gr_gid; + } + return 1; +} + +/* chown-like: + * "user" sets uid only, + * ":group" sets gid only + * "user:" sets uid and gid (to user's primary group id) + * "user:group" sets uid and gid + * ('unset' uid or gid is actually set to -1) + */ +void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) +{ + char *group; + + u->uid = -1; + u->gid = -1; + + /* Check if there is a group name */ + group = strchr(user_group, '.'); /* deprecated? */ + if (!group) + group = strchr(user_group, ':'); + else + *group = ':'; /* replace '.' with ':' */ + + /* Parse "user[:[group]]" */ + if (!group) { /* "user" */ + u->uid = get_ug_id(user_group, xuname2uid); + } else if (group == user_group) { /* ":group" */ + u->gid = get_ug_id(group + 1, xgroup2gid); + } else { + if (!group[1]) /* "user:" */ + *group = '\0'; + if (!get_uidgid(u, user_group, 1)) + bb_error_msg_and_die("unknown user/group %s", user_group); + } +} + +#if 0 +#include +int main() +{ + unsigned u; + struct bb_uidgid_t ug; + u = get_uidgid(&ug, "apache", 0); + printf("%u = %u:%u\n", u, ug.uid, ug.gid); + ug.uid = ug.gid = 1111; + u = get_uidgid(&ug, "apache", 0); + printf("%u = %u:%u\n", u, ug.uid, ug.gid); + ug.uid = ug.gid = 1111; + u = get_uidgid(&ug, "apache:users", 0); + printf("%u = %u:%u\n", u, ug.uid, ug.gid); + ug.uid = ug.gid = 1111; + u = get_uidgid(&ug, "apache:users", 0); + printf("%u = %u:%u\n", u, ug.uid, ug.gid); + return 0; +} +#endif -- cgit v1.2.3