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efba0b1df5
New version of PAM plugin (v2.0) added along with the old v1.0. There the pam module is isolated in the auth_pam_tool application so cannot crash the server.
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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Copyright (c) 2011, 2018 MariaDB Corporation
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA */
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/*
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This file contains definitions and functions for
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the interface between the auth_pam.so (PAM plugin version 2)
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and the auth_pam_tool executable.
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To be included both in auth_pam.c and auth_pam_tool.c.
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*/
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#define AP_AUTHENTICATED_AS 'A'
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#define AP_CONV 'C'
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#define AP_EOF 'E'
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static int read_length(int file)
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{
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unsigned char hdr[2];
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if (read(file, hdr, 2) < 2)
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return -1;
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return (((int) hdr[0]) << 8) + (int) hdr[1];
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}
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static void store_length(int len, unsigned char *p_len)
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{
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p_len[0]= (unsigned char) ((len >> 8) & 0xFF);
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p_len[1]= (unsigned char) (len & 0xFF);
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}
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/*
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Returns the length of the string read,
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or -1 on error.
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*/
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static int read_string(int file, char *s, int s_size)
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{
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int len;
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len= read_length(file);
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if (len < 0 || len > s_size-1 ||
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read(file, s, len) < len)
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return -1;
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s[len]= 0;
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return len;
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}
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/*
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Returns 0 on success.
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*/
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static int write_string(int file, const unsigned char *s, int s_len)
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{
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unsigned char hdr[2];
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store_length(s_len, hdr);
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return write(file, hdr, 2) < 2 ||
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write(file, s, s_len) < s_len;
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}
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#define MAX_PAM_SERVICE_NAME 1024
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