net/samba3/patches/130-owrt_smbpasswd.patch

   1 Index: samba-3.0.24/source/Makefile
   2 ===================================================================
   3 --- samba-3.0.24.orig/source/Makefile   2008-08-07 15:56:45.000000000 +0200
   4 +++ samba-3.0.24/source/Makefile        2008-08-07 15:56:45.000000000 +0200
   5 @@ -1015,9 +1015,9 @@
   6
   7  MY_PASS_OBJ = libsmb/smbdes.o lib/md4.o lib/arc4.o
   8
   9 -bin/smbpasswd: utils/avm_smbpasswd.o $(MY_PASS_OBJ)
  10 +bin/smbpasswd: utils/owrt_smbpasswd.o $(MY_PASS_OBJ)
  11         @echo Linking $@
  12 -       @$(CC) $(FLAGS)  -o $@ utils/avm_smbpasswd.o $(MY_PASS_OBJ) \
  13 +       @$(CC) $(FLAGS)  -o $@ utils/owrt_smbpasswd.o $(MY_PASS_OBJ) \
  14                 -L$(TARGETFS)/lib
  15
  16
  17 Index: samba-3.0.24/source/utils/owrt_smbpasswd.c
  18 ===================================================================
  19 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
  20 +++ samba-3.0.24/source/utils/owrt_smbpasswd.c  2008-08-07 15:58:25.000000000 +0200
  21 @@ -0,0 +1,195 @@
  22 +/*
  23 + * Copyright (C) John Crispin <blogic@openwrt.org>
  24 + *
  25 + * This program is free software; you can redistribute it and/or modify it
  26 + * under the terms of the GNU General Public License as published by the
  27 + * Free Software Foundation; either version 2 of the License, or (at your
  28 + * option) any later version.
  29 + *
  30 + * This program is distributed in the hope that it will be useful, but WITHOUT
  31 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  32 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  33 + * more details.
  34 + *
  35 + * You should have received a copy of the GNU General Public License along with
  36 + * this program; if not, write to the Free Software Foundation, Inc., 675
  37 + * Mass Ave, Cambridge, MA 02139, USA.  */
  38 +
  39 +#include "includes.h"
  40 +#include <endian.h>
  41 +
  42 +void E_md4hash(const char *passwd, uchar p16[16])
  43 +{
  44 +       int len;
  45 +       smb_ucs2_t wpwd[129];
  46 +       int i;
  47 +
  48 +       len = strlen(passwd);
  49 +       for (i = 0; i < len; i++) {
  50 +#if __BYTE_ORDER == __LITTLE_ENDIAN
  51 +               wpwd[i] = (unsigned char)passwd[i];
  52 +#else
  53 +               wpwd[i] = (unsigned char)passwd[i] << 8;
  54 +#endif
  55 +       }
  56 +       wpwd[i] = 0;
  57 +
  58 +       len = len * sizeof(int16);
  59 +       mdfour(p16, (unsigned char *)wpwd, len);
  60 +       ZERO_STRUCT(wpwd);
  61 +}
  62 +
  63 +/* returns -1 if user is not present in /etc/passwd*/
  64 +int find_uid_for_user(char *user)
  65 +{
  66 +       char t[256];
  67 +       FILE *fp = fopen("/etc/passwd", "r");
  68 +       int ret = -1;
  69 +
  70 +       if(!fp)
  71 +       {
  72 +               printf("failed to open /etc/passwd");
  73 +               goto out;
  74 +       }
  75 +
  76 +       while(!feof(fp))
  77 +       {
  78 +               if(fgets(t, 255, fp))
  79 +               {
  80 +                       char *p1, *p2;
  81 +                       p1 = strchr(t, ':');
  82 +                       if(p1 && (p1 - t == strlen(user)) && (strncmp(t, user, strlen(user))) == 0)
  83 +                       {
  84 +                               p1 = strchr(t, ':');
  85 +                               if(!p1)
  86 +                                       goto out;
  87 +                               p2 = strchr(++p1, ':');
  88 +                               if(!p2)
  89 +                                       goto out;
  90 +                               p1 = strchr(++p2, ':');
  91 +                               if(!p1)
  92 +                                       goto out;
  93 +                               *p1 = '\0';
  94 +                               ret = atoi(p2);
  95 +                               goto out;
  96 +                       }
  97 +               }
  98 +       }
  99 +       printf("No valid user found in /etc/passwd\n");
 100 +
 101 +out:
 102 +       if(fp)
 103 +               fclose(fp);
 104 +       return ret;
 105 +}
 106 +
 107 +void insert_user_in_smbpasswd(char *user, char *line)
 108 +{
 109 +       char t[256];
 110 +       FILE *fp = fopen("/etc/samba/smbpasswd", "r+");
 111 +
 112 +       if(!fp)
 113 +       {
 114 +               printf("failed to open /etc/samba/smbpasswd");
 115 +               goto out;
 116 +       }
 117 +
 118 +       while(!feof(fp))
 119 +       {
 120 +               if(fgets(t, 255, fp))
 121 +               {
 122 +                       char *p;
 123 +                       p = strchr(t, ':');
 124 +                       if(p && (p - t == strlen(user)) && (strncmp(t, user, strlen(user))) == 0)
 125 +                       {
 126 +                               fseek(fp, -strlen(line), SEEK_CUR);
 127 +                               break;
 128 +                       }
 129 +               }
 130 +       }
 131 +
 132 +       fprintf(fp, line);
 133 +
 134 +out:
 135 +       if(fp)
 136 +               fclose(fp);
 137 +}
 138 +
 139 +void delete_user_from_smbpasswd(char *user)
 140 +{
 141 +       char t[256];
 142 +       FILE *fp = fopen("/etc/samba/smbpasswd", "r+");
 143 +
 144 +       if(!fp)
 145 +       {
 146 +               printf("failed to open /etc/samba/smbpasswd");
 147 +               goto out;
 148 +       }
 149 +
 150 +       while(!feof(fp))
 151 +       {
 152 +               if(fgets(t, 255, fp))
 153 +               {
 154 +                       char *p;
 155 +                       p = strchr(t, ':');
 156 +                       if(p && (p - t == strlen(user)) && (strncmp(t, user, strlen(user))) == 0)
 157 +                       {
 158 +                               fpos_t r_pos, w_pos;
 159 +                               char t2[256];
 160 +                               fgetpos(fp, &r_pos);
 161 +                               w_pos = r_pos;
 162 +                               w_pos.__pos -= strlen(t);
 163 +                               while(fgets(t2, 256, fp))
 164 +                               {
 165 +                                       fsetpos(fp, &w_pos);
 166 +                                       fputs(t2, fp);
 167 +                                       r_pos.__pos += strlen(t2);
 168 +                                       w_pos.__pos += strlen(t2);
 169 +                                       fsetpos(fp, &r_pos);
 170 +                               }
 171 +                               ftruncate(fileno(fp), w_pos.__pos);
 172 +                               break;
 173 +                       }
 174 +               }
 175 +       }
 176 +
 177 +out:
 178 +       if(fp)
 179 +               fclose(fp);
 180 +}
 181 +
 182 +int main(int argc, char **argv)
 183 +{
 184 +       unsigned uid;
 185 +       uchar new_nt_p16[NT_HASH_LEN];
 186 +       int g;
 187 +       int smbpasswd_present;
 188 +       char smbpasswd_line[256];
 189 +       char *s;
 190 +
 191 +       if(argc != 3)
 192 +       {
 193 +               printf("usage for openwrt_smbpasswd - \n\t%s USERNAME PASSWD\n\t%s -del USERNAME\n", argv[0], argv[0]);
 194 +               exit(1);
 195 +       }
 196 +       if(strcmp(argv[1], "-del") == 0)
 197 +       {
 198 +               printf("deleting user %s\n", argv[2]);
 199 +               delete_user_from_smbpasswd(argv[2]);
 200 +               return 0;
 201 +       }
 202 +       uid = find_uid_for_user(argv[1]);
 203 +       if(uid == -1)
 204 +               exit(2);
 205 +
 206 +       E_md4hash(argv[2], new_nt_p16);
 207 +       s = smbpasswd_line;
 208 +       s += snprintf(s, 256 - (s - smbpasswd_line), "%s:%u:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:", argv[1], uid);
 209 +       for(g = 0; g < 16; g++)
 210 +               s += snprintf(s, 256 - (s - smbpasswd_line), "%02X", new_nt_p16[g]);
 211 +       snprintf(s, 256 - (s - smbpasswd_line), ":[U          ]:LCT-00000001:\n");
 212 +
 213 +       insert_user_in_smbpasswd(argv[1], smbpasswd_line);
 214 +
 215 +       return 0;
 216 +}