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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 2010, Mandy Wu, <mandy.wu (at) intel.com>
      9  * Copyright (C) 2011 - 2013, Daniel Stenberg, <daniel (at) haxx.se>, et al.
     10  *
     11  * This software is licensed as described in the file COPYING, which
     12  * you should have received as part of this distribution. The terms
     13  * are also available at https://curl.haxx.se/docs/copyright.html.
     14  *
     15  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     16  * copies of the Software, and permit persons to whom the Software is
     17  * furnished to do so, under the terms of the COPYING file.
     18  *
     19  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     20  * KIND, either express or implied.
     21  *
     22  ***************************************************************************/
     23 #include "server_setup.h"
     24 
     25 /*
     26  * This is a fake ntlm_auth, which is used for testing NTLM single-sign-on.
     27  * When DEBUGBUILD is defined, libcurl invoke this tool instead of real winbind
     28  * daemon helper /usr/bin/ntlm_auth. This tool will accept commands and
     29  * responses with a pre-written string saved in test case test2005.
     30  */
     31 
     32 #define ENABLE_CURLX_PRINTF
     33 #include "curlx.h" /* from the private lib dir */
     34 #include "getpart.h"
     35 #include "util.h"
     36 
     37 /* include memdebug.h last */
     38 #include "memdebug.h"
     39 
     40 #ifndef DEFAULT_LOGFILE
     41 #define DEFAULT_LOGFILE "log/fake_ntlm.log"
     42 #endif
     43 
     44 const char *serverlogfile = DEFAULT_LOGFILE;
     45 
     46 /*
     47  * Returns an allocated buffer with printable representation of input
     48  * buffer contents or returns NULL on out of memory condition.
     49  */
     50 static char *printable(char *inbuf, size_t inlength)
     51 {
     52   char *outbuf;
     53   char *newbuf;
     54   size_t newsize;
     55   size_t outsize;
     56   size_t outincr = 0;
     57   size_t i, o = 0;
     58 
     59 #define HEX_FMT_STR  "[0x%02X]"
     60 #define HEX_STR_LEN  6
     61 #define NOTHING_STR  "[NOTHING]"
     62 #define NOTHING_LEN  9
     63 
     64   if(!inlength)
     65     inlength = strlen(inbuf);
     66 
     67   if(inlength) {
     68     outincr = ((inlength/2) < (HEX_STR_LEN+1)) ? HEX_STR_LEN+1 : inlength/2;
     69     outsize = inlength + outincr;
     70   }
     71   else
     72     outsize = NOTHING_LEN + 1;
     73 
     74   outbuf = malloc(outsize);
     75   if(!outbuf)
     76     return NULL;
     77 
     78   if(!inlength) {
     79     snprintf(&outbuf[0], outsize, "%s", NOTHING_STR);
     80     return outbuf;
     81   }
     82 
     83   for(i=0; i<inlength; i++) {
     84 
     85     if(o > outsize - (HEX_STR_LEN + 1)) {
     86       newsize = outsize + outincr;
     87       newbuf = realloc(outbuf, newsize);
     88       if(!newbuf) {
     89         free(outbuf);
     90         return NULL;
     91       }
     92       outbuf = newbuf;
     93       outsize = newsize;
     94     }
     95 
     96     if((inbuf[i] > 0x20) && (inbuf[i] < 0x7F)) {
     97       outbuf[o] = inbuf[i];
     98       o++;
     99     }
    100     else {
    101       snprintf(&outbuf[o], outsize - o, HEX_FMT_STR, inbuf[i]);
    102       o += HEX_STR_LEN;
    103     }
    104 
    105   }
    106   outbuf[o] = '\0';
    107 
    108   return outbuf;
    109 }
    110 
    111 int main(int argc, char *argv[])
    112 {
    113   char buf[1024];
    114   FILE *stream;
    115   char *filename;
    116   int error;
    117   char *type1_input = NULL, *type3_input = NULL;
    118   char *type1_output = NULL, *type3_output = NULL;
    119   size_t size = 0;
    120   long testnum;
    121   const char *env;
    122   int arg = 1;
    123   char *helper_user = (char *)"unknown";
    124   char *helper_proto = (char *)"unknown";
    125   char *helper_domain = (char *)"unknown";
    126   bool use_cached_creds = FALSE;
    127   char *msgbuf;
    128 
    129   buf[0] = '\0';
    130 
    131   while(argc > arg) {
    132     if(!strcmp("--use-cached-creds", argv[arg])) {
    133       use_cached_creds = TRUE;
    134       arg++;
    135     }
    136     else if(!strcmp("--helper-protocol", argv[arg])) {
    137       arg++;
    138       if(argc > arg)
    139         helper_proto = argv[arg++];
    140     }
    141     else if(!strcmp("--username", argv[arg])) {
    142       arg++;
    143       if(argc > arg)
    144         helper_user = argv[arg++];
    145     }
    146     else if(!strcmp("--domain", argv[arg])) {
    147       arg++;
    148       if(argc > arg)
    149         helper_domain = argv[arg++];
    150     }
    151     else {
    152       puts("Usage: fake_ntlm [option]\n"
    153            " --use-cached-creds\n"
    154            " --helper-protocol [protocol]\n"
    155            " --username [username]\n"
    156            " --domain [domain]");
    157       exit(1);
    158     }
    159   }
    160 
    161   logmsg("fake_ntlm (user: %s) (proto: %s) (domain: %s) (cached creds: %s)",
    162          helper_user, helper_proto, helper_domain,
    163          (use_cached_creds) ? "yes" : "no");
    164 
    165   env = getenv("CURL_NTLM_AUTH_TESTNUM");
    166   if(env) {
    167     char *endptr;
    168     long lnum = strtol(env, &endptr, 10);
    169     if((endptr != env + strlen(env)) || (lnum < 1L)) {
    170       logmsg("Test number not valid in CURL_NTLM_AUTH_TESTNUM");
    171       exit(1);
    172     }
    173     testnum = lnum;
    174   }
    175   else {
    176     logmsg("Test number not specified in CURL_NTLM_AUTH_TESTNUM");
    177     exit(1);
    178   }
    179 
    180   env = getenv("CURL_NTLM_AUTH_SRCDIR");
    181   if(env) {
    182     path = env;
    183   }
    184 
    185   filename = test2file(testnum);
    186   stream=fopen(filename, "rb");
    187   if(!stream) {
    188     error = errno;
    189     logmsg("fopen() failed with error: %d %s", error, strerror(error));
    190     logmsg("Error opening file: %s", filename);
    191     logmsg("Couldn't open test file %ld", testnum);
    192     exit(1);
    193   }
    194   else {
    195     /* get the ntlm_auth input/output */
    196     error = getpart(&type1_input, &size, "ntlm_auth_type1", "input", stream);
    197     fclose(stream);
    198     if(error || size == 0) {
    199       logmsg("getpart() type 1 input failed with error: %d", error);
    200       exit(1);
    201     }
    202   }
    203 
    204   stream=fopen(filename, "rb");
    205   if(!stream) {
    206     error = errno;
    207     logmsg("fopen() failed with error: %d %s", error, strerror(error));
    208     logmsg("Error opening file: %s", filename);
    209     logmsg("Couldn't open test file %ld", testnum);
    210     exit(1);
    211   }
    212   else {
    213     size = 0;
    214     error = getpart(&type3_input, &size, "ntlm_auth_type3", "input", stream);
    215     fclose(stream);
    216     if(error || size == 0) {
    217       logmsg("getpart() type 3 input failed with error: %d", error);
    218       exit(1);
    219     }
    220   }
    221 
    222   while(fgets(buf, sizeof(buf), stdin)) {
    223     if(strcmp(buf, type1_input) == 0) {
    224       stream=fopen(filename, "rb");
    225       if(!stream) {
    226         error = errno;
    227         logmsg("fopen() failed with error: %d %s", error, strerror(error));
    228         logmsg("Error opening file: %s", filename);
    229         logmsg("Couldn't open test file %ld", testnum);
    230         exit(1);
    231       }
    232       else {
    233         size = 0;
    234         error = getpart(&type1_output, &size, "ntlm_auth_type1", "output",
    235                         stream);
    236         fclose(stream);
    237         if(error || size == 0) {
    238           logmsg("getpart() type 1 output failed with error: %d", error);
    239           exit(1);
    240         }
    241       }
    242       printf("%s", type1_output);
    243       fflush(stdout);
    244     }
    245     else if(strncmp(buf, type3_input, strlen(type3_input)) == 0) {
    246       stream=fopen(filename, "rb");
    247       if(!stream) {
    248         error = errno;
    249         logmsg("fopen() failed with error: %d %s", error, strerror(error));
    250         logmsg("Error opening file: %s", filename);
    251         logmsg("Couldn't open test file %ld", testnum);
    252         exit(1);
    253       }
    254       else {
    255         size = 0;
    256         error = getpart(&type3_output, &size, "ntlm_auth_type3", "output",
    257                         stream);
    258         fclose(stream);
    259         if(error || size == 0) {
    260           logmsg("getpart() type 3 output failed with error: %d", error);
    261           exit(1);
    262         }
    263       }
    264       printf("%s", type3_output);
    265       fflush(stdout);
    266     }
    267     else {
    268       printf("Unknown request\n");
    269       msgbuf = printable(buf, 0);
    270       if(msgbuf) {
    271         logmsg("invalid input: '%s'\n", msgbuf);
    272         free(msgbuf);
    273       }
    274       else
    275         logmsg("OOM formatting invalid input: '%s'\n", buf);
    276       exit(1);
    277     }
    278   }
    279   return 1;
    280 }
    281