version 1.41, 2018/07/18 11:34:04 |
version 1.42, 2019/06/28 13:35:04 |
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privileged = 1; |
privileged = 1; |
temporarily_use_uid_effective = 1; |
temporarily_use_uid_effective = 1; |
saved_egroupslen = getgroups(NGROUPS_MAX, saved_egroups); |
saved_egroupslen = getgroups(NGROUPS_MAX, saved_egroups); |
if (saved_egroupslen < 0) |
if (saved_egroupslen == -1) |
fatal("getgroups: %.100s", strerror(errno)); |
fatal("getgroups: %.100s", strerror(errno)); |
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/* set and save the user's groups */ |
/* set and save the user's groups */ |
if (user_groupslen == -1 || user_groups_uid != pw->pw_uid) { |
if (user_groupslen == -1 || user_groups_uid != pw->pw_uid) { |
if (initgroups(pw->pw_name, pw->pw_gid) < 0) |
if (initgroups(pw->pw_name, pw->pw_gid) == -1) |
fatal("initgroups: %s: %.100s", pw->pw_name, |
fatal("initgroups: %s: %.100s", pw->pw_name, |
strerror(errno)); |
strerror(errno)); |
user_groupslen = getgroups(NGROUPS_MAX, user_groups); |
user_groupslen = getgroups(NGROUPS_MAX, user_groups); |
if (user_groupslen < 0) |
if (user_groupslen == -1) |
fatal("getgroups: %.100s", strerror(errno)); |
fatal("getgroups: %.100s", strerror(errno)); |
user_groups_uid = pw->pw_uid; |
user_groups_uid = pw->pw_uid; |
} |
} |
/* Set the effective uid to the given (unprivileged) uid. */ |
/* Set the effective uid to the given (unprivileged) uid. */ |
if (setgroups(user_groupslen, user_groups) < 0) |
if (setgroups(user_groupslen, user_groups) == -1) |
fatal("setgroups: %.100s", strerror(errno)); |
fatal("setgroups: %.100s", strerror(errno)); |
if (setegid(pw->pw_gid) < 0) |
if (setegid(pw->pw_gid) == -1) |
fatal("setegid %u: %.100s", (u_int)pw->pw_gid, |
fatal("setegid %u: %.100s", (u_int)pw->pw_gid, |
strerror(errno)); |
strerror(errno)); |
if (seteuid(pw->pw_uid) == -1) |
if (seteuid(pw->pw_uid) == -1) |
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fatal("restore_uid: temporarily_use_uid not effective"); |
fatal("restore_uid: temporarily_use_uid not effective"); |
debug("restore_uid: %u/%u", (u_int)saved_euid, (u_int)saved_egid); |
debug("restore_uid: %u/%u", (u_int)saved_euid, (u_int)saved_egid); |
/* Set the effective uid back to the saved privileged uid. */ |
/* Set the effective uid back to the saved privileged uid. */ |
if (seteuid(saved_euid) < 0) |
if (seteuid(saved_euid) == -1) |
fatal("seteuid %u: %.100s", (u_int)saved_euid, strerror(errno)); |
fatal("seteuid %u: %.100s", (u_int)saved_euid, strerror(errno)); |
if (setgroups(saved_egroupslen, saved_egroups) < 0) |
if (setgroups(saved_egroupslen, saved_egroups) == -1) |
fatal("setgroups: %.100s", strerror(errno)); |
fatal("setgroups: %.100s", strerror(errno)); |
if (setegid(saved_egid) < 0) |
if (setegid(saved_egid) == -1) |
fatal("setegid %u: %.100s", (u_int)saved_egid, strerror(errno)); |
fatal("setegid %u: %.100s", (u_int)saved_egid, strerror(errno)); |
temporarily_use_uid_effective = 0; |
temporarily_use_uid_effective = 0; |
} |
} |
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fatal("permanently_set_uid: temporarily_use_uid effective"); |
fatal("permanently_set_uid: temporarily_use_uid effective"); |
debug("permanently_set_uid: %u/%u", (u_int)pw->pw_uid, |
debug("permanently_set_uid: %u/%u", (u_int)pw->pw_uid, |
(u_int)pw->pw_gid); |
(u_int)pw->pw_gid); |
if (setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) != 0) |
if (setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) == -1) |
fatal("setresgid %u: %s", (u_int)pw->pw_gid, strerror(errno)); |
fatal("setresgid %u: %s", (u_int)pw->pw_gid, strerror(errno)); |
if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) != 0) |
if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) == -1) |
fatal("setresuid %u: %s", (u_int)pw->pw_uid, strerror(errno)); |
fatal("setresuid %u: %s", (u_int)pw->pw_uid, strerror(errno)); |
} |
} |