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10 reyssat 1
/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
2
 *
3
 *  This program is free software; you can redistribute it and/or modify
4
 *  it under the terms of the GNU General Public License as published by
5
 *  the Free Software Foundation; either version 2 of the License, or
6
 *  (at your option) any later version.
7
 *
8
 *  This program is distributed in the hope that it will be useful,
9
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 *  GNU General Public License for more details.
12
 *
13
 *  You should have received a copy of the GNU General Public License
14
 *  along with this program; if not, write to the Free Software
15
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16
 */
17
 
8155 bpr 18
/* Web exerciser */
10 reyssat 19
 
8178 bpr 20
#include "wims.h"
21
 
8121 bpr 22
struct {
12263 bpr 23
  char *name;
24
  char *font;
8121 bpr 25
} charname[]={
12263 bpr 26
  {"en","windows-1252"},
27
  {"fr","windows-1252"},
28
  {"es","windows-1252"},
29
  {"cn","gb2312"},
30
  {"de","windows-1252"},
31
  {"it","windows-1252"},
32
  {"nl","windows-1252"},
33
  {"si","iso-8859-2"},
34
  {"ar","iso-8859-6"},
35
  {"tw","big5"},
36
  {"pt","windows-1252"},
37
  {"ca","windows-1252"},
38
  {"pt","windows-1252"},
39
  {"ru","iso-8859-5"},
40
  {"ty","iso-8859-13"}
8121 bpr 41
};
42
 
43
#define charname_no (sizeof(charname)/sizeof(charname[0]))
44
 
8155 bpr 45
/* left to right or right to left writing */
8121 bpr 46
struct {
12263 bpr 47
  char *name;
48
  char *dirn;
8121 bpr 49
} dirnname[]={
12263 bpr 50
  {"en","ltr"},
51
  {"fr","ltr"},
52
  {"es","ltr"},
53
  {"cn","ltr"},
54
  {"de","ltr"},
55
  {"it","ltr"},
56
  {"nl","ltr"},
57
  {"si","ltr"},
58
  {"ar","rtl"},
59
  {"tw","ltr"},
60
  {"pt","ltr"},
61
  {"ca","ltr"},
62
  {"pt","ltr"},
63
  {"ru","ltr"},
64
  {"ty","ltr"}
8121 bpr 65
 
66
};
67
 
68
#define dirnname_no (sizeof(dirnname)/sizeof(dirnname[0]))
69
 
70
 
10 reyssat 71
#define evalue strevalue
72
char *robot_session="../tmp/robot";
73
int robot_access=0,human_access=0;
74
int user_error_nolog=0;
75
char *good_agent[]={
12263 bpr 76
  "Mozilla","Netscape","Opera","WIMS",
77
  "MSIE","Konqueror","Java"
10 reyssat 78
};
79
#define good_agent_no (sizeof(good_agent)/sizeof(good_agent[0]))
80
 
81
char *bad_agent[]={ /* These are really bad agents: prohibited. */
12263 bpr 82
  "HTTrack","MemoWeb","Teleport","Offline","Wget","eCatch",
83
  "Powermarks","EmailSiphon", "WebCopier"
10 reyssat 84
};
85
#define bad_agent_no (sizeof(bad_agent)/sizeof(bad_agent[0]))
86
 
87
/* used for debugging */
88
int debug=0;
89
 
90
char class_dir[MAX_FNAME+1]; /* directory name of this class */
91
 
8185 bpr 92
struct user_variable user_variable[MAX_VAR_NUM];
10 reyssat 93
int user_var_no;
94
 
8185 bpr 95
struct VAR_DEF var_def[MAX_VAR_NUM];
10 reyssat 96
int defined_var_total;
97
 
7673 bpr 98
/* Destinated to module error messages */
10 reyssat 99
WORKING_FILE m_file,svar_file,mcache[MAX_MCACHE];
100
int mcachecnt;
101
 
7673 bpr 102
/* Limit for any data working files. */
10 reyssat 103
int WORKFILE_LIMIT=2048*1024;
104
 
7673 bpr 105
/* whether the user has defined language */
10 reyssat 106
int user_lang=0;
107
 
7673 bpr 108
/* for instex grouping */
10 reyssat 109
int instex_cnt=0, getwimstexsize=1;
110
char instex_src[MAX_LINELEN+1], instex_fname[MAX_LINELEN+1];
111
char *instex_processor="tex..gif";
112
 
7673 bpr 113
/* Cookie management */
10 reyssat 114
char cookiegot[256], cookieset[256], cookieheader[64]="WIMSUSER=";
115
 
7673 bpr 116
/* multipart boundary */
10 reyssat 117
char mpboundary[1024];
118
int  deplen=0; /* length of deposit */
119
 
120
int confset=0; /* set to 1 if setvar for config */
121
 
7673 bpr 122
/* Operating mode: default, popup, raw, etc. */
8185 bpr 123
 
10 reyssat 124
int mode=mode_default;
125
 
7673 bpr 126
/* Switch; notice subroutines wherether we are outputing. */
10 reyssat 127
int outputing;
128
 
129
char *home_module="home"; /* name of home module */
7673 bpr 130
extern char **environ;      /* table of environment variables */
10 reyssat 131
int module_defined=0;
132
 
133
        /* directory prefix buffers */
134
char session_prefix[MAX_FNAME+1], s2_prefix[MAX_FNAME+1], module_prefix[MAX_FNAME+1];
135
 
136
char *stdinbuf;
7673 bpr 137
int sesrandomtab[MAX_SESRANDOM]; /* session random values */
10 reyssat 138
char multiexec_random[64];
139
int executed_gotos; /* number of goto's executed. to check with GOTO_LIMIT. */
140
int insert_no; /* number of instex, insplot, insPLOT. */
141
int output_length; /* length of the output. */
7673 bpr 142
int isexam=0; /* non-zero if request is exam */
143
int simuxam=0; /* exam is simulation */
144
int is_multiexec=0; /* for execredirected */
10 reyssat 145
int multiexec_index;
146
int direct_datafile=0;
147
int exec_is_module=0;
148
  /* root directory of modules */
149
char *module_dir="modules";
150
int new_session=0; /* =1 if new session created */
7673 bpr 151
int good_httpd=0; /* Whether the http server is intelligent */
10 reyssat 152
/* int internal_sql=0; */ /* for internal sql use */
153
int direct_exec=0; /* calc routine is exected by exec if 1 */
154
int print_precision=8; /* precision when printing real numbers */
155
int session_serial; /* request serial for session control */
7673 bpr 156
int form_access=0; /* identifies form access, for robot identification */
157
int lastout_file=-1; /* file to hold last output */
158
char *instex_style=""; /* "": text "$": math "$$": displaymath */
159
int instex_usedynamic=0; /* always dynamic if 1 */
160
int wrapexec=0; /* if set to 1, change uid (nobody) to euid (wims).
161
                 * if set to -1, change euid to uid when exec(). */
162
int parm_restore=0; /* Restoring saved parameters? */
163
int exec_wait=1; /* whether to wait for fork return */
164
int execnt=0; /* count executions */
165
int readnest; /* nested read count */
166
int mfilecnt=0; /* count working files */
167
int forceresume=0; /* force user to resume old request */
168
int manageable=0; /* whether the connection may be site manager
169
                   * 0: no; 1: maybe; 2: sure */
170
int ismhelp=0;  /* 1 if session is in mhelp. */
171
int getvar_len; /* length of the last-got variable. */
172
int noout=0; /* if set to 1 then output is skipped */
173
char tmp_dir[MAX_FNAME+1]; /* temporary directory */
174
char *bin_dir="bin"; /* directory containing executable scripts and programs. */
175
char cwdbuf[MAX_FNAME+1]; /* store current working directory */
176
char var_hacking=0; /* Trying to hack a variable? */
10 reyssat 177
char *tmp_debug="no";
11104 bpr 178
char *tmp_debug_var="";
7673 bpr 179
char ins_alt[MAX_LINELEN+1]; /* dynamic insertion alternative text */
180
char *devel_modules="close"; /* whether to open devel modules */
181
int isclassmodule=0; /* 1 if the module is class module */
182
int isdevelmodule=0; /* development module? */
183
int setcookie=0; /* 1 if need to set cookie */
184
int killpid=0; /* pid of process to kill by alarm */
185
char *mathalign_sup1, *mathalign_sup2; /* see mathalign_base */
186
int substnest=0; /* nesting level of substit() */
10 reyssat 187
int exodepOK=1;
7673 bpr 188
long int startmtime; /* start time in milliseconds */
189
long int startmtime2; /* start time in microseconds */
190
int backslash_insmath=0; /* \(...) substitution? */
191
char examlogf[MAX_FNAME+1]; /* examlog file name */
192
char examlogd[MAX_FNAME+1]; /* examlog file name */
193
char exam_sheetexo[32]; /* sheet data of an exam */
10 reyssat 194
char loadavg[64];
7673 bpr 195
/* user file variable access control. */
10 reyssat 196
char *var_readable, *var_writable, *var_nr, *var_nw, *var_pfx;
197
int hostcquota;
7673 bpr 198
int var_noexport; /* do not export variable */
10 reyssat 199
 
7673 bpr 200
char tmplbuf[MAX_LINELEN+1]; /* for temporary uses not thru subroutines. */
10 reyssat 201
 
7673 bpr 202
struct tm *now, Now; /* time of request */
10 reyssat 203
time_t nowtime, limtime, limtimex;
204
char nowstr[32];
205
 
7673 bpr 206
/* Resource limits. Capital names are reserved by system. */
207
int rlimit_cpu=20;  /* cpu time in seconds */
10 reyssat 208
int rlimit_fsize=8388608;/* file size */
5222 guerimand 209
int rlimit_as=614457600;/* virtual memory size */
210
int rlimit_data=204857600;/* data segment size; maxima requires a lot (must be lower than rlimit_as)*/
10 reyssat 211
int rlimit_stack=2097152;/* stack size */
7673 bpr 212
int rlimit_core=0; /* core dump size */
213
int rlimit_rss=16777216; /* resident size */
214
int rlimit_nproc=1024; /* number of processes */
215
int rlimit_nofile=512; /* number of open files */
10 reyssat 216
int rlimit_memlock=2097152;/* locked-in-memory address space */
217
 
218
char *var_str; /* malloc'ed buffer to hold translated query_string */
219
 
7673 bpr 220
/* buffer to hold module's variable definition file, malloc'ed. */
10 reyssat 221
char *var_def_buf;
222
 
8185 bpr 223
/* job_identifier is even a reserved variable name */
10 reyssat 224
char job_identifier[32];
225
 
8185 bpr 226
/* site manager definition IPv4 IPv6*/
4648 bpr 227
char *manager_site="127.0.0.1 ::1";
10 reyssat 228
int   manager_https=0;
229
 
8185 bpr 230
/* sheet and exercise information */
10 reyssat 231
int wims_sheet=0,wims_exo=0;
232
 
8185 bpr 233
/* Form method: get or post */
10 reyssat 234
char *default_form_method="post";
235
 
8185 bpr 236
/* Je suis maintenant oblige de passer a l'anglais
237
 * pour la langue de defaut.
238
 */
10 reyssat 239
char lang[16]="en";
240
char available_lang[MAX_LANGUAGES][4]={"en","fr"};
241
int available_lang_no=2;
242
char pre_language[4]="";
10051 bpr 243
FILE *trace_file;
11104 bpr 244
int trace_indent=0;
10 reyssat 245
char *protocol="http"; /* http or https */
246
 
8185 bpr 247
/* check for coordinate input. This will mean that
248
 * the request is manual, but not robot.
249
 */
10 reyssat 250
int coord_input=0;
251
 
8155 bpr 252
/* These are readonly environment variable names
253
 * special parm used for special cmds (getins, etc).
254
 */
10 reyssat 255
char *ro_name[]={
12271 bpr 256
  "cmd",
12263 bpr 257
  "empty",
12271 bpr 258
  "lang",
259
  "module",
260
  "session",
12263 bpr 261
  "special_parm",
262
  "special_parm2",
263
  "special_parm3",
264
  "special_parm4",
265
  "useropts" ,
266
  "wims_session",
267
  "wims_subsession",
268
  "wims_window",
269
  "worksheet"
10 reyssat 270
};
271
 
8185 bpr 272
int RO_NAME_NO=(sizeof(ro_name)/sizeof(ro_name[0]));
273
 
10 reyssat 274
int cmd_type;
275
char *commands[]={
276
    "intro" , "new" , "renew" , "reply" , "config" , "hint" , "help" ,
277
      "resume", "next", "getins", "getframe", "getfile", "close", "ref"
278
};
279
 
8185 bpr 280
int CMD_NO=(sizeof(commands)/sizeof(commands[0]));
281
 
8155 bpr 282
/* stat=0: saved variables
283
 * all names starting with wims_priv_ are also internal.
284
 */
8185 bpr 285
struct internal_name internal_name[]={
12263 bpr 286
  {"accessright", 1}, /* right to access commercial resources */
287
  {"caller", 1}, /* caller session */
288
  {"check", 1}, /* for exam check use */
289
  {"class", 1},
290
  {"class_examlog", 1},
291
  {"class_exolog", 1},
292
  {"class_limit", 1},
293
  {"class_quota", 1},
294
  {"class_regpass", 1},
295
  {"class_user_limit", 1},
296
  {"classdir", 1},
297
  {"classname", 1},
298
  {"devel_modules", 1},
299
  {"developer", 1},
300
  {"doc_quota", 1},
301
  {"doc_regpass", 1},
302
  {"email", 1},
303
  {"exo", 0}, /* exercise number */
304
  {"exoption", 1}, /* exercise option */
305
  {"firstname", 1},
306
  {"forum_limit", 1},
307
  {"home", 1},
308
  {"institutionname", 1},
309
  {"isexam", 0}, /* whether the sheet is an exam sheet */
310
  {"ismanager", 0},
311
  {"lastname", 1},
312
  {"mode", 0}, /* operating mode */
313
  {"module_start_time", 0},
314
  {"now", 1}, /* date and time, yyyymmdd.hh:mm:ss */
315
  {"nowseconds", 1}, /* date and time, seconds since EPOCH */
316
  {"nr", 1}, /* non-readable variables in user file, words */
317
  {"nw", 1}, /* non-writable variables in user file, words */
318
  {"otherclass", 1}, /* Remember other logins */
319
  {"participate", 1}, /* superclass definition */
320
  {"prefix", 1}, /* user file prefix */
321
  {"protocol", 0}, /* http protocol */
322
  {"rafale", 0}, /* rapidfire request information */
323
  {"readable", 1}, /* readable variables in user file, words */
324
  {"realuser", 1}, /* real user for supervisor in gateway */
325
  {"req_time", 0}, /* time of the request */
326
  {"sclassdir", 1},
327
  {"scorereg", 0}, /* score registration flag */
328
  {"seed", 0},
329
  {"seed_repeat",0},
330
  {"seed_score", 0},
331
  {"sequence", 0}, /* sequence number */
332
  {"sescookie", 1}, /* session cookie */
333
  {"sesdir", 1},
334
  {"session_serial", 0}, /* request serial in the session */
335
  {"session_start_time", 0},
336
  {"sheet", 0}, /* sheet number */
337
  {"sup_secure", 1}, /* secure level of supervisor */
338
  {"superclass", 1}, /* superclass code */
339
  {"superclass_quota", 1},
340
  {"supertype", 1}, /* superclass type */
341
  {"supervise", 1}, /* superclass definition */
342
  {"supervisor", 1}, /* real name of the supervisor */
343
  {"supervisormail",1}, /* email of supervisor */
344
  {"trustfile", 1}, /* trusted files in special adm modules */
345
  {"useropts", 1}, /* user options */
346
  {"writable", 1}, /* writable variables in user file, words */
10 reyssat 347
};
8185 bpr 348
int INTERNAL_NAME_NO=(sizeof(internal_name)/sizeof(internal_name[0]));
10 reyssat 349
 
350
char *httpd_vars[]={
12263 bpr 351
  "HTTP_ACCEPT",
352
  "HTTP_ACCEPT_CHARSET",
353
  "HTTP_ACCEPT_LANGUAGE",
354
  "HTTP_COOKIE",
355
  "HTTP_HOST",
356
  "HTTP_USER_AGENT",
357
  "HTTP_X_REQUESTED_WITH",
358
  "HTTPS",
359
  "QUERY_STRING",
360
  "REMOTE_HOST",
361
  "REMOTE_ADDR",
362
  "REMOTE_PORT",
363
  "REQUEST_METHOD",
364
  "SCRIPT_NAME",
365
  "SERVER_NAME",
366
  "SERVER_SOFTWARE",
367
  "SERVER_PROTOCOL"
10 reyssat 368
};
369
#define HTTPD_VAR_NO (sizeof(httpd_vars)/sizeof(httpd_vars[0]))
370
 
8155 bpr 371
/* security: these variables will not be visible to child processes */
10 reyssat 372
char *unsetvars[]={
12263 bpr 373
  "DOCUMENT_ROOT","SERVER_SIGNATURE","SERVER_SOFTWARE",
10 reyssat 374
      "UNIQUE_ID","HTTP_KEEP_ALIVE","SSL_SESSION_ID"
375
};
376
#define unsetvarcnt (sizeof(unsetvars)/sizeof(unsetvars[0]))
377
 
378
int httpd_type=httpd_apache;
379
 
7673 bpr 380
char *remote_addr=""; /* storing for performance */
10 reyssat 381
char *remote_host="";
382
 
383
char ref_name[2048], ref_base[2048];
384
 
385
void put_special_page(char *pname);
386
void useropts(void);
387
 
7673 bpr 388
/* Make certain httpd variables readable by modules */
10 reyssat 389
void take_httpd_vars(void)
390
{
12263 bpr 391
  int i;
392
  char *p, buf[MAX_NAMELEN+1];
393
  var_noexport=1;
394
  for(i=0;i<HTTPD_VAR_NO;i++) {
395
   snprintf(buf,sizeof(buf),"httpd_%s",httpd_vars[i]);
396
   if((p=getenv(httpd_vars[i]))!=NULL) setvar(buf,p);
397
  }
398
  var_noexport=0;
7673 bpr 399
 
12263 bpr 400
  for(i=0;i<unsetvarcnt;i++) unsetenv(unsetvars[i]);
401
   /* IPv4 IPv6*/
402
  p=getenv("REMOTE_ADDR");if(p!=NULL && (strcmp(p,"127.0.0.1")==0 || strcmp(p,"::1")==0)) human_access=1;
403
  p=getenv("HTTP_REFERER"); if(p!=NULL && *p!=0) setvar("wims_referer",p);
10 reyssat 404
}
405
 
11735 obado 406
/* cookie2session */
10 reyssat 407
void cookie2session(void)
408
{
12263 bpr 409
  char cksession[64], psession[32], *ckey, *p;
410
  char nbuf[MAX_FNAME+1];
10 reyssat 411
 
12263 bpr 412
  if(mode==mode_popup) return;
413
  if(cookiegot[0]==0) {
414
   ckset: cookiegot[0]=0; setcookie=1; return;
415
  }
416
  p=getvar("special_parm");
417
  if(p!=NULL && strcmp(p,"ignorecookie")==0) return;
418
  mystrncpy(cksession,cookiegot,sizeof(cksession));
419
  ckey=strchr(cksession,'-');
420
  if(ckey==NULL) goto ckset; else *ckey++=0;
421
  p=getvar("wims_session"); if(p==NULL) p="";
422
  if(strstr(p,"new")!=NULL) goto ckset;
423
  mystrncpy(psession,p,sizeof(psession));
424
  p=strchr(psession,'_'); if(p!=NULL) *p=0;
425
  if(psession[0]!=0) {
426
    if(strcmp(psession,cksession)==0) return;
427
    if(session_exists(psession)) goto ckset;
428
    if(session_exists(cksession)) goto change;
429
  }
430
  else {
431
    if(!session_exists(cksession)) return;
432
    change:
433
    p=getenv("HTTPS");
434
    if(p!=NULL && strcasecmp(p,"on")==0) goto ckset;
435
    mkfname(nbuf,"%s/%s/var",session_dir,cksession);
436
    getdef(nbuf,"w_wims_ismanager",tmplbuf);
437
    if(tmplbuf[0]!=0 && tmplbuf[0]!='0') goto ckset;
438
    getdef(nbuf,"w_wims_protocol",tmplbuf);
439
    if(strcasecmp(tmplbuf,"https")==0) goto ckset;
440
    mkfname(nbuf,"%s/%s/var.stat",session_dir,cksession);
441
    getdef(nbuf,"wims_user",tmplbuf);
442
    if(tmplbuf[0]!=0) goto ckset;
443
    force_setvar(ro_name[ro_session],cksession);
444
    setsesdir(cksession);
445
    force_setvar("wims_subsession","");
446
    session_serial=0;
447
  }
10 reyssat 448
}
449
 
450
void determine_font(char *l)
451
{
12263 bpr 452
  int i;
7673 bpr 453
 
12263 bpr 454
  if(l==NULL || *l==0) return;
455
  for(i=0;i<charname_no && memcmp(charname[i].name,l,2);i++);
456
  if(i<charname_no) setvar("wims_main_font",charname[i].font);
10 reyssat 457
}
458
 
3278 reyssat 459
void determine_dirn(char *l)
460
{
12263 bpr 461
  int i;
7673 bpr 462
 
12263 bpr 463
  if(l==NULL || *l==0) return;
464
  for(i=0;i<dirnname_no && memcmp(dirnname[i].name,l,2);i++);
465
  if(i<dirnname_no) setvar("wims_main_dirn",dirnname[i].dirn);
3278 reyssat 466
}
467
 
10 reyssat 468
void predetermine_language(void)
469
{
12263 bpr 470
  char *p;
471
  int i,n;
10 reyssat 472
 
12263 bpr 473
  if(pre_language[0]!=0) p=pre_language;
474
  else p=getenv("HTTP_ACCEPT_LANGUAGE");
475
  if(p!=NULL && strlen(p)>=2) {
10 reyssat 476
    for(i=0;i<available_lang_no && memcmp(p,available_lang[i],2)!=0;i++);
12263 bpr 477
    if(i<available_lang_no) goto lend;
478
  }
479
  p=getenv("HTTP_USER_AGENT");
480
  if(p!=NULL && strlen(p)>=5) {
481
    char *q;
482
    if((q=strchr(p,'['))!=NULL && islower(*(q+1)) && islower(*(q+2)) && *(q+3)==']') {
483
        char bb[4];
484
        bb[0]=*(q+1);bb[1]=*(q+2);bb[2]=0;
485
        for(i=0;i<available_lang_no && memcmp(bb,available_lang[i],2)!=0;i++);
486
        if(i<available_lang_no) {
487
          memmove(lang,bb,2); lang[2]=0;
488
          goto lend2;
489
        }
10 reyssat 490
    }
12263 bpr 491
  }
492
  p=getenv("HTTP_HOST"); if(p==NULL) goto lend2;
493
  n=strlen(p); if(n<=3 || *(p+n-3)!='.') goto lend2;
494
  p=p+n-2;
495
  for(i=0;i<available_lang_no && memcmp(p,available_lang[i],2)!=0;i++);
496
  if(i<available_lang_no) {
497
    lend: memmove(lang,p,2); lang[2]=0;
498
    lend2: determine_font(lang);determine_dirn(lang);
499
  }
10 reyssat 500
}
501
 
7673 bpr 502
/* print a special page */
10 reyssat 503
void put_special_page(char *pname)
504
{
12263 bpr 505
  determine_font(lang);
506
  determine_dirn(lang);
507
  phtml_put_base(mkfname(NULL,"%s.phtml.%s",pname,lang),0);
508
  write_logs();free(var_str);
10 reyssat 509
}
510
 
7673 bpr 511
/* check whether the connection is a site manager. */
10 reyssat 512
void manager_check(void)
513
{
12263 bpr 514
  char *p, *pp, buf[16];
515
  struct stat confstat;
516
  int i;
7673 bpr 517
 
12263 bpr 518
  manageable=0;
519
  if(robot_access || *manager_site==0 || checkhost(manager_site)<1)
520
    goto mend;
521
  if(manager_https) {
522
    p=getenv("HTTPS");
523
    if(p==NULL || strcmp(p,"on")!=0) goto mend;
524
  }
8185 bpr 525
/* IPv4 IPv6*/
12263 bpr 526
  if(strcmp(remote_addr,"127.0.0.1")==0 || strcmp(remote_addr,"::1")==0) {
527
    int port, port2;
528
    char tester[128];
529
    p=getenv("REMOTE_PORT"); if(p==NULL) goto mend;
530
    port=atoi(p); if(port<1024 || port>65535) goto mend;
531
    p=getenv("SERVER_PORT"); if(p==NULL) goto mend;
532
    port2=atoi(p); if(port2>=10000 || port2<=0) goto mend;
7673 bpr 533
/* this is very non-portable */
12263 bpr 534
    manageable=1;
535
    accessfile(tmplbuf,"r","/proc/net/tcp");
536
    snprintf(tester,sizeof(tester)," 0100007F:%04X 0100007F:%04X ",
537
           port,port2);
538
    p=strstr(tmplbuf,tester);
539
    if(p!=NULL) {
540
      pp=strchr(p,'\n'); if(pp!=NULL) *pp=0;
541
      if(strlen(p)>=75) {
542
        p=find_word_start(p+70); *find_word_end(p)=0;
543
        if(atoi(p)==geteuid()) manageable=2;
7673 bpr 544
      }
10 reyssat 545
    }
12263 bpr 546
  }
547
  else manageable=1;
548
  i=stat(config_file,&confstat);
549
  if(i==0 && manageable>0 && (confstat.st_mode&(S_IRWXO|S_IRWXG))!=0) manageable=-1;
550
  if(manageable>0 && !trusted_module()) manageable=0;
551
  if(manageable==1) {
552
    accessfile(tmplbuf,"r","%s/.manager",session_prefix);
553
    if(strstr(tmplbuf,"yes")!=NULL) manageable=2;
554
  }
555
  if(manageable==1) {
556
    p=getvar(ro_name[ro_module]);
557
    if(p!=NULL && strncmp(p,"adm/manage",strlen("adm/manage"))==0) {
558
      struct stat pstat;
559
      if(stat("../log/.wimspass",&pstat)==0) {
560
        if((S_IFMT&pstat.st_mode)!=S_IFREG ||
561
           ((S_IRWXO|S_IRWXG)&pstat.st_mode)!=0)
562
          manageable=-2;
7673 bpr 563
      }
10 reyssat 564
    }
12263 bpr 565
  }
566
  mend:
567
  mystrncpy(buf,int2str(manageable),sizeof(buf));
568
  force_setvar("wims_ismanager",buf);
569
  if(manageable>=2) {
570
    struct rlimit rlim;
571
    rlimit_cpu*=10;
572
    rlim.rlim_cur=rlim.rlim_max=rlimit_cpu;
573
    setrlimit(RLIMIT_CPU,&rlim);
574
    mystrncpy(buf,int2str(rlimit_cpu),sizeof(buf));
575
    setvar("wims_cpu_limit",buf);
576
    initalarm();
577
  }
10 reyssat 578
}
579
 
7673 bpr 580
/* check for robot access */
10 reyssat 581
void robot_check(void)
582
{
12263 bpr 583
  char *ua, *p, *ses, *c, *mod;
584
  int i;
10 reyssat 585
 
12263 bpr 586
  if(human_access) return;
587
  mod=getvar(ro_name[ro_module]);
588
  if(mod!=NULL && strcmp(mod,"adm/raw")==0) return;
589
  ses=getvar(ro_name[ro_session]);
7673 bpr 590
/* user has valid session; OK */
12263 bpr 591
  if(ses!=NULL && strncmp(ses,robot_session,strlen(robot_session))!=0
592
     && strchr(ses,'/')==NULL
593
     && ftest(mkfname(NULL,"%s/%s",s2_dir,ses))==is_dir)
594
    return;
595
  ua=getenv("HTTP_USER_AGENT"); if(ua==NULL) ua="";
596
  ua=find_word_start(ua);
597
  if(strncasecmp(ua,"Mozilla",strlen("Mozilla"))==0 &&
598
     (p=strstr(ua,"compatible"))!=NULL)
599
    ua=find_word_start(find_word_end(p));
600
  if(*ua) {
601
    for(i=0;i<good_agent_no
602
        && strncasecmp(ua,good_agent[i],strlen(good_agent[i]));i++);
603
    if(i<good_agent_no) return;
604
    for(i=0;i<bad_agent_no
605
        && strstr(ua,bad_agent[i])==NULL;i++);
606
    if(i<bad_agent_no) user_error("trapped");
607
  }
608
  force_setvar(ro_name[ro_session],robot_session);
609
  setsesdir(robot_session);
610
  c=getvar(ro_name[ro_cmd]);
611
  robot_access=1;
612
  if(c!=NULL && strcmp(c,"new") && strcmp(c,"intro")) {
613
    force_setvar(ro_name[ro_cmd],"robot_error");
614
    nph_header(450); put_special_page("robot");
615
    flushoutput(); flushlog(); exit(0);
616
  }
10 reyssat 617
}
618
 
7673 bpr 619
/* type=0: ordinary; type=1: multipart/form-data */
10 reyssat 620
void parse_query_string(int len, int type)
621
{
12263 bpr 622
  int i,j,l,v,cmd_defined;
623
  int parenth=-1, ll, lb, dlen;
624
  char *start, *p, *p1, *pt, *b1="";
7673 bpr 625
 
12263 bpr 626
  cmd_defined=0;
627
  setvar("wims_subsession","");
628
  ll=lb=0;
629
  if(type) {
630
    ll=strlen(mpboundary);
631
    start=strstr(var_str,mpboundary);
632
    if(start==NULL) start=var_str+strlen(var_str);
633
    if(strstr(var_str,"\r\n\r\n")!=NULL) b1="\r\n\r\n";
634
    else b1="\n\n";
635
    lb=strlen(b1);
636
  }
637
  else start=var_str;
638
  for(v=0, p1=start;p1<var_str+len;p1+=l) {
10 reyssat 639
    if(type) {
12263 bpr 640
      char *p2, *p3, *p4, *p5;
641
      p2=p1+ll; p3=memstr(p2,mpboundary,var_str+len-p2); l=p3-p1;
642
      p=memstr(p2,b1,var_str+len-p2); if(p>=p3) continue;
643
      p+=lb;
644
      if(p3<var_str+len) {
645
        while(*p3!='\n' && p3>p2) p3--;
646
        *p3=0;
647
        p3--; if(*p3=='\r') *p3=0;
648
      }
649
      dlen=p3-p;
650
      p2=memstr(p2,"name=",p3-p2); if(p2>=p3) continue;
651
      p2+=strlen("name="); if(*p2=='"') p2++;
652
      for(p3=p2; myisalnum(*p3) || strchr("._",*p3)!=NULL; p3++);
653
      if(p3==p2) continue;
654
        if(p3-p2==strlen("wims_deposit") &&
655
           strncmp(p2,"wims_deposit",p3-p2)==0) {
656
          p4=memstr(p1,"filename=",p-p1); if(p4<p) {
657
            p4+=strlen("filename="); if(*p4=='"') {
658
              p4++; p5=strchr(p4,'"');
659
              if(p5==NULL || p5-p4>=MAX_FNAME) goto emptyquote;
7673 bpr 660
            }
12263 bpr 661
            else {
662
              emptyquote:
663
              for(p5=p4; p5<p && !isspace(*p5) &&
664
                  strchr(";\"~#*?=,'",*p5)==NULL; p5++);
665
            }
666
            if(p5>p4) {
667
              *p5=0;
668
              for(p5--;
669
                  p5>=p4 && !isspace(*p5) && strchr("/\\:",*p5)==NULL;
670
                  p5--);
671
              if(p5>=p4) p4=p5+1;
672
              if(*p4==0) goto noname;
673
              if(strstr(p4,"..")!=NULL || *p4=='.')
674
                p4="noname.file";
675
              setvar("wims_deposit",p4);
676
            }
677
            else {
678
              noname: setvar("wims_deposit","noname.file");
679
            }
7673 bpr 680
          }
12263 bpr 681
          deplen=dlen;
682
        }
683
        *p3=0; l-=p2-p1; p1=p2;
684
    }
685
    else {
686
      p1=find_word_start(p1);
687
      l=strlen(p1)+1; p=strchr(p1,'=');
688
      if(p==NULL) p=p1+strlen(p1);
689
      if(*p==0 && l>1) {
690
        user_variable[v].name="no_name";
691
        user_variable[v].value=p1;
692
        coord_input=1;
693
        goto nnext;
7673 bpr 694
      }
12263 bpr 695
      *p++=0;
696
    }
7673 bpr 697
/* empty name or empty value: ignore */
12263 bpr 698
    if(*p1==0 || *p==0) continue;
7673 bpr 699
/* We do not treat names containing '.' */
12263 bpr 700
    for(pt=strchr(p1,'.'); pt; pt=strchr(++pt,'.')) *pt='_';
7673 bpr 701
/* Restrictions on variable names */
12263 bpr 702
    for(pt=p1; myisalnum(*pt) || *pt=='_'; pt++);
703
    if(*pt) continue;
704
    if(strcmp(p1,"wims_deposit")!=0) _tolinux(p);
7673 bpr 705
/* This is a restriction:
8155 bpr 706
 * Every parameter must have matching parentheses.
707
 */
12263 bpr 708
    if(parenth==-1 && strncmp(p1,"freepar_",strlen("freepar_"))!=0
7673 bpr 709
         && strcmp(p1,"wims_deposit")!=0
710
         && check_parentheses(p,1)) parenth=v;
12263 bpr 711
    if(strcmp(p1,"special_parm")==0 && strcmp(p,"wims")==0)
7673 bpr 712
        human_access=1;
12263 bpr 713
    j=search_list(ro_name,RO_NAME_NO,sizeof(ro_name[0]),p1);
714
    if(j>=0) {
715
      if(j==ro_session) {
716
        p=find_word_start(p); *find_word_end(p)=0;
717
        if(strlen(p)>MAX_SESSIONLEN) continue;
718
        if(strcmp(p,robot_session)==0) p="";
719
        if(strcasecmp(p,"popup")==0) {
720
          mode=mode_popup;
721
          force_setvar("wims_mode","popup");
722
          force_setvar("session","");
7673 bpr 723
          continue;
12263 bpr 724
        }
7673 bpr 725
      }
12263 bpr 726
      if(j==ro_module) module_defined=1;
727
      if(j==ro_cmd) {
728
        p=find_word_start(p); *find_word_end(p)=0;
729
        if(strlen(p)>16) continue;
730
        cmd_defined=1;
7673 bpr 731
      }
12263 bpr 732
      if(j==ro_lang) {
733
        if(strlen(p)!=2) continue;
734
        for(i=0;i<available_lang_no && strcmp(available_lang[i],p)!=0;i++);
735
        if(i<available_lang_no) {user_lang=1; ovlstrcpy(lang,p);}
736
        else continue;
737
      }
738
/* strip leading and trailing '/'s in module name */
739
      if(j==ro_module) {
740
        p=find_word_start(p); *find_word_end(p)=0;
741
        while(*p=='/') p++;
742
        while(*p!=0 && *(p+strlen(p)-1)=='/') *(p+strlen(p)-1)=0;
743
        if(strlen(p)>MAX_MODULELEN) continue;
744
      }
745
      setvar(p1,p);
746
      if(j==ro_session && mode!=mode_popup) {
747
        char *pp, *pr;
748
        char buf[1024];
749
        mystrncpy(buf,p,sizeof(buf));
750
        if((pp=strchr(buf,'.'))!=NULL) {
751
          *pp++=0; session_serial=atoi(pp);
752
          if(pp<0) pp=0;
753
        }
754
        else session_serial=0;
755
        pp=strchr(buf,'_');
756
        if(pp!=NULL && (pr=strstr(pp,"_mhelp"))!=NULL) {
757
          *pr=0; ismhelp=1; lastout_file=-1;
758
          setvar("wims_inssub","mh");
759
        }
760
        force_setvar("wims_session",buf);
761
        if(pp!=NULL) force_setvar("wims_subsession",pp);
762
      }
763
      continue;
10 reyssat 764
    }
12263 bpr 765
    user_variable[v].name=p1;
766
    user_variable[v].value=p;
767
nnext:v++; if(v>=MAX_VAR_NUM) user_error("too_many_variables");
768
  }
769
  user_var_no=v;
770
  if(parenth>=0) {
771
    char buf[16];
772
    mystrncpy(buf,int2str(user_var_no),sizeof(buf));
773
    setvar("user_var_no",buf);
774
    for(i=0;i<user_var_no;i++) {
775
      snprintf(buf,sizeof(buf),"name%d",i);
776
      setvar(buf,user_variable[i].name);
777
      snprintf(buf,sizeof(buf),"value%d",i);
778
      setvar(buf,user_variable[i].value);
10 reyssat 779
    }
12263 bpr 780
    mystrncpy(buf,int2str(parenth),sizeof(buf));
781
    setvar("bad_parentheses",buf);
782
    user_error("unmatched_parentheses");
783
  }
784
  p=getenv("SCRIPT_NAME");
785
  if(p!=NULL && (p=strstr(p,"/getfile/"))!=NULL) {
786
    p+=strlen("/getfile/");
787
    force_setvar(ro_name[ro_cmd],commands[cmd_getfile]);
788
    force_setvar("special_parm",p);
789
    cmd_defined=1;
790
  }
791
  if(module_defined && !cmd_defined) setvar(ro_name[ro_cmd],commands[cmd_intro]);
792
  robot_check(); cookie2session();
10 reyssat 793
}
794
 
7673 bpr 795
/* parse special commands */
10 reyssat 796
void special_cmds(void)
797
{
12263 bpr 798
  char *c, *p;
799
  int i;
800
  long int l=-1;
7673 bpr 801
 
12263 bpr 802
  c=getvar(ro_name[ro_cmd]);
803
  if(c==NULL || *c==0) {  /* no module name nor command */
804
    setvar(ro_name[ro_module],home_module);
805
    setvar(ro_name[ro_cmd],commands[cmd_new]);
806
    return;
807
  }
808
  for(i=0;i<CMD_NO && strcmp(commands[i],c)!=0; i++);
809
  switch(i) {
810
    case cmd_intro: {
811
      set_module_prefix();
812
      default_form_method="get";
813
      if(ftest(mkfname(NULL,"%s/%s",module_prefix,intro_file))<0) {
814
        force_setvar(ro_name[ro_cmd],commands[cmd_new]);
815
        return;
816
      }
817
      p=getvar("wims_session");
818
      if(p!=NULL && *p!=0) {
819
        if(set_session_prefix()==0) check_session();
820
        else {
821
          trap_check(p);
822
          if(strchr(p,'_')!=NULL && strchr(p,'/')==NULL) {
823
            get_static_session_var();
7673 bpr 824
          }
12263 bpr 825
        }
826
      }
7673 bpr 827
/* determine http protocol name. How to detect? */
12263 bpr 828
      p=getenv("HTTPS");
829
      if(p!=NULL && strcmp(p,"on")==0) {
830
        protocol="https"; set_protocol();
7673 bpr 831
      }
12263 bpr 832
      force_setvar("wims_protocol",protocol);
833
      determine_font(lang);
834
      determine_dirn(lang);
835
      main_phtml_put(intro_file); debug_output();
836
      introend: write_logs();free(var_str);
837
      delete_pid(); exit(0);
838
    }
839
    case cmd_ref: {
840
      set_module_prefix();
841
      default_form_method="get";
842
      p=getvar("wims_session");
843
      if(p!=NULL && *p!=0) {
844
        if(set_session_prefix()==0) check_session();
845
        else trap_check(p);
7673 bpr 846
      }
12263 bpr 847
      determine_font(lang);
848
      determine_dirn(lang);
849
      main_phtml_put(ref_file); goto introend;
850
    }
851
    case cmd_getins: {
852
      c=getvar(ro_name[ro_special_parm]);
853
      if(c==NULL || *c==0) {
854
        user_error_nolog=1; user_error("no_insnum");
855
      }
856
      if(*c=='/' || strstr(c,"..")!=NULL) goto badins;
857
      set_session_prefix();
858
      if(strstr(session_prefix,"robot")!=NULL) exit(0);
859
      l=filelength("%s/%s",s2_prefix,c);
860
      if(l<0) {
861
        badins: user_error_nolog=1; user_error("bad_insnum");
862
      }
863
      {
864
        char *fmt;
865
        fmt=strchr(c,'.');
866
        if(fmt==NULL) {
867
            user_error_nolog=1; user_error("bad_insnum");
868
        }
869
        else fmt++;
7673 bpr 870
 
12263 bpr 871
        nph_header(200);
10 reyssat 872
/* insert format problem; bricolage */
12263 bpr 873
        printf("Content-type: image/%s\r\n\
10 reyssat 874
Content-length: %ld\r\n\r\n",fmt,l);
12263 bpr 875
        catfile(stdout,"%s/%s",s2_prefix,c); exit(0);
7673 bpr 876
      }
12263 bpr 877
    }
878
    case cmd_getfile: {
879
      char fname[MAX_FNAME+1];
880
      c=getvar(ro_name[ro_special_parm]);
881
      if(c==NULL || *c==0) {
882
        user_error_nolog=1; user_error("no_insnum");
883
      }
884
      if(*c=='/' || strstr(c,"..")!=NULL) goto badfile;
7673 bpr 885
 
12263 bpr 886
      set_session_prefix();
887
      if(strstr(session_prefix,"robot")!=NULL) exit(0);
888
      mkfname(fname,"%s/getfile/%s",session_prefix,c);
889
      l=filelength("%s",fname);
890
      if(l<0 && strchr(session_prefix,'_')!=NULL) {
891
        char *pt;
892
        mystrncpy(fname,session_prefix,sizeof(fname));
893
        pt=strrchr(fname,'_'); if(pt) *pt=0;
894
        snprintf(fname+(pt-fname),sizeof(fname)-(pt-fname),
895
              "/getfile/%s",c);
896
        l=filelength("%s",fname);
897
      }
898
      if(l<0) {
899
        badfile: user_error_nolog=1; user_error("bad_insnum");
900
      }
901
      if(l>512*1024) {
902
        struct rlimit rlim;
903
        rlimit_cpu*=l/(10*1024);
904
        rlim.rlim_cur=rlim.rlim_max=rlimit_cpu;
905
          initalarm();
906
      }
907
      {
908
        char *p1;
909
        char mime[MAX_LINELEN+1];
910
        for(p1=c+strlen(c);p1>c && isalpha(*(p1-1)); p1--);
911
        ovlstrcpy(mime,"application/octet-stream");
912
        if(p1>c && *(p1-1)=='.') {
913
          setvar("translator_unknown",mime);
914
          setvar("dictionary","bases/sys/mime");
915
          snprintf(mime,sizeof(mime),"translator %s",p1);
916
          calc_exec(mime);
917
        }
918
        nph_header(200);
919
        printf("Content-type: %s\r\n\
10 reyssat 920
Content-length: %ld\r\n\r\n",mime,l);
12263 bpr 921
        catfile(stdout,"%s",fname); exit(0);
7673 bpr 922
      }
12263 bpr 923
    }
7673 bpr 924
      case cmd_close: {
12263 bpr 925
        char *p, b2[32]; int w;
926
        char nbuf[MAX_FNAME+1], vbuf[MAX_LINELEN+1];
927
        p=getvar(ro_name[ro_session]);
928
        if(p==NULL || strlen(p)<10 ||
929
           strchr(p,'/')!=NULL) return;
930
        mystrncpy(b2,p,sizeof(b2));
931
        p=strchr(b2,'.'); if(p!=NULL) *p=0;
932
        mkfname(nbuf,"%s/%s/var.stat",session_dir,b2);
933
        getdef(nbuf,"wims_caller",vbuf);
934
        if(vbuf[0]!=0) force_setvar(ro_name[ro_session],vbuf);
935
        w=wrapexec; wrapexec=1;
936
        call_sh("rm -Rf %s/%s* %s/%s* >/dev/null 2>&1",session_dir,b2,s2_dir,b2);
937
        wrapexec=w; cookiegot[0]=0;
938
        force_setvar(ro_name[ro_cmd],"new");
7673 bpr 939
      }
940
      default: return;
12263 bpr 941
  }
10 reyssat 942
}
943
 
7673 bpr 944
/* This is run only when manually invoking the program.
8155 bpr 945
 * Verifies the orderedness of various list tables.
946
 */
10 reyssat 947
int verify_tables(void)
948
{
949
    if(verify_order(calc_routine,CALC_FN_NO,sizeof(calc_routine[0]))) return -1;
950
    if(verify_order(exec_routine,EXEC_FN_NO,sizeof(exec_routine[0]))) return -1;
951
    if(verify_order(main_config,MAIN_CONFIG_NO,sizeof(main_config[0]))) return -1;
952
    if(verify_order(mathname,mathname_no,sizeof(mathname[0]))) return -1;
953
    if(verify_order(hmname,hmname_no,sizeof(hmname[0]))) return -1;
954
    if(verify_order(ro_name,RO_NAME_NO,sizeof(ro_name[0]))) return -1;
955
    if(verify_order(distr_cmd,distr_cmd_no,sizeof(distr_cmd[0]))) return -1;
956
    if(verify_order(internal_name,INTERNAL_NAME_NO,
7673 bpr 957
                sizeof(internal_name[0]))) return -1;
10 reyssat 958
    if(verify_order(tmathfn,tmathfn_no,sizeof(tmathfn[0]))) return -1;
959
    if(verify_order(tmathvar,tmathvar_no,sizeof(tmathvar[0]))) return -1;
960
    if(verify_order(modindex,MODINDEX_NO,sizeof(modindex[0]))) return -1;
961
    if(verify_order(exportvars,exportvarcnt,sizeof(exportvars[0]))) return -1;
962
    if(evaltab_verify()) return -1;
963
    if(textab_verify()) return -1;
964
    return 0;
965
}
966
 
967
void config_defaults(void)
968
{
3857 kbelabas 969
    int i;
10 reyssat 970
    for(i=0;i<MAIN_CONFIG_NO;i++) {
7673 bpr 971
      if((1&main_config[i].is_integer)==1) {
972
          int *pi = (int*)main_config[i].address;
973
          printf("DF_%s=%d\n",main_config[i].name, *pi);
3857 kbelabas 974
        }
7673 bpr 975
      else {
3857 kbelabas 976
            char **ps = (char**)main_config[i].address;
7673 bpr 977
          printf("DF_%s=%s\n",main_config[i].name,*ps);
3857 kbelabas 978
        }
10 reyssat 979
    }
980
}
981
 
7673 bpr 982
/* get and set useroptions */
10 reyssat 983
void useropts(void)
984
{
985
    char *p;
986
    setvar("lang",lang);
987
    p=getvar("useropts");
988
    if(p==NULL || *p==0) p=getvar("wims_useropts");
989
    if(p!=NULL && *p!=0) {
6178 bpr 990
      if(myisdigit(p[0])) {
991
        usertexsize=p[0]-'0';
6184 bpr 992
        /* fourth digit is for special fonts*/
6178 bpr 993
        if(p[1]!=0) { mathalign_base=p[1]-'0'; }
994
      }
6184 bpr 995
      if(myisdigit(p[3]) && p[3]!=0){ spec_font=p[3]-'0';}
996
    }
997
    if(mathalign_base==1) {
6178 bpr 998
        mathalign_sup1="<sup>"; mathalign_sup2="</sup>";
6184 bpr 999
    } else mathalign_sup1=mathalign_sup2="";
10 reyssat 1000
}
1001
 
7673 bpr 1002
/* popup module help */
10 reyssat 1003
void mhelp(void)
1004
{
1005
    char *p, buf[MAX_LINELEN+1];
1006
    main_phtml_put(""); buf[0]=0;
1007
    if(cmd_type!=cmd_help) {
7673 bpr 1008
      phtml_put_base("closemhelp.phtml",0);
10 reyssat 1009
    }
1010
    else {
7673 bpr 1011
      phtml_put_base("mhelpheader.phtml",0);
1012
      p=getvar("special_parm");
1013
      if(p!=NULL && strcmp(p,"about")==0)
1014
        phtml_put("about.phtml",0);
11125 georgesk 1015
      else phtml_put("help.phtml",0);
1016
      phtml_put_base("mhelptail.phtml",0);
7673 bpr 1017
      exec_tail(buf);
10 reyssat 1018
    }
1019
}
1020
 
1021
#define READSTDIN_WINDOW 4096
1022
 
1023
void readstdin(int len)
1024
{
1025
    int ll, l1, lt, lr;
1026
    int cpulim;
7673 bpr 1027
 
10 reyssat 1028
    cpulim=rlimit_cpu; rlimit_cpu=3;
1029
    lr=len; l1=0;
1030
    while(lr>0) {
7673 bpr 1031
      nowtime=time(0); initalarm();
1032
      ll=lr; if(ll>READSTDIN_WINDOW) ll=READSTDIN_WINDOW;
1033
      lt=fread(stdinbuf+l1,1,ll,stdin);
1034
      if(lt!=ll) user_error("parm_too_long");
1035
      lr-=ll; l1+=ll;
10 reyssat 1036
    }
1037
    if(l1!=len) user_error("parm_too_long");
1038
    stdinbuf[len]=0; rlimit_cpu=cpulim;
1039
}
1040
 
7673 bpr 1041
/* input: p=QUERY_STRING. output: parameter length. */
1042
/* Netscape puts form content into /tmp. */
10 reyssat 1043
int formdata(char *p)
1044
{
1045
    char *pp;
1046
    int inlen;
1047
    char *ctype;
1048
    inlen=0; ctype=getenv("CONTENT_TYPE");
1049
    if(ctype==NULL || strstr(ctype,"multipart/form-data")==NULL
1050
       || (p=strstr(ctype,"boundary="))==NULL) {
7673 bpr 1051
      bad: stdinbuf=""; return 0;
10 reyssat 1052
    }
1053
    pp=getenv("CONTENT_LENGTH");
1054
    if(pp==NULL) goto bad;
1055
    inlen=atoi(pp); if(inlen<=10) goto bad;
1056
    if(inlen>=MAX_DEPOSITLEN) user_error("parm_too_long");
1057
    stdinbuf=xmalloc(inlen+1); readstdin(inlen);
1058
    p+=strlen("boundary=");
1059
    for(pp=p;myisalnum(*pp) || *pp=='-'; pp++);
1060
    if(pp-p<sizeof(mpboundary)-2) {
7673 bpr 1061
      memmove(mpboundary,p,pp-p); mpboundary[pp-p]=0;
10 reyssat 1062
    }
7673 bpr 1063
/* empty data */
10 reyssat 1064
    if(strstr(stdinbuf,mpboundary)==NULL || strstr(stdinbuf,"name=")==NULL) {
7673 bpr 1065
      free(stdinbuf); goto bad;
10 reyssat 1066
    }
1067
    form_access=1; post_log();
1068
    return inlen;
1069
}
1070
 
7673 bpr 1071
/* get the content of POST */
10 reyssat 1072
void getpost(void)
1073
{
1074
    int ll;
1075
    char *pp;
1076
    pp=getenv("CONTENT_LENGTH");
1077
    if(pp==NULL || (ll=atoi(pp))<=0) {
7673 bpr 1078
      stdinbuf=xmalloc(16); stdinbuf[0]=0;
10 reyssat 1079
    }
1080
    else {
7673 bpr 1081
      if(ll>QUERY_STRING_LIMIT) user_error("parm_too_long");
1082
      stdinbuf=xmalloc(ll+16); readstdin(ll);
1083
      if(ll>0) {
1084
          setenv("QUERY_STRING",stdinbuf,1);
1085
          form_access=1; post_log();
1086
      }
10 reyssat 1087
    }
1088
}
1089
 
1090
void buffer_init(void)
1091
{
1092
    struct timeval tv;
7673 bpr 1093
 
10 reyssat 1094
    mcachecnt=readnest=0;
1095
    mpboundary[0]=cookiegot[0]=cookieset[0]=cwdbuf[0]=0;
1096
    rscore_class[0]=rscore_user[0]=multiexec_random[0]=0;
1097
    lastftest[0]=0;
1098
    lastdatafile[0]=0; lastdata=xmalloc(WORKFILE_LIMIT);
1099
    outptr=outbuf;
1100
    instex_src[0]=instex_fname[0]=module_prefix[0]=0;
1101
    examlogf[0]=examlogd[0]=exam_sheetexo[0]=0;
1102
    stdinbuf=NULL;
1103
    mkfname(tmp_dir,"../tmp/forall");
1104
    mkfname(session_dir,"../%s",SESSION_BASE);
1105
    mkfname(s2_dir,"../%s",S2_BASE);
1106
    if(gettimeofday(&tv,NULL)) startmtime=startmtime2=0;
1107
    else {
7673 bpr 1108
      startmtime=((tv.tv_sec%10000)*1000+tv.tv_usec/1000);
1109
      startmtime2=(tv.tv_sec%1000)*1000000+tv.tv_usec;
10 reyssat 1110
    }
1111
}
1112
 
8216 bpr 1113
/**
1114
 * runs the test suite, to check whether the documented commands of modtool
1115
 * behave properly.
1116
 * @param prefix path to the proc file to process
1117
 * @param p      name of the proc file to proceed
1118
 * @param vars a list of var names to print.
1119
 **/
1120
void test_suite(char *prefix, char *p, char *vars){
1121
  char *v, *nextv;
1122
  mystrncpy(module_prefix, prefix, sizeof(module_prefix));
1123
  exec_read(p);
1124
  nextv=vars;
1125
  while (*nextv!='\0'){
1126
    v=find_word_start(nextv);
1127
    nextv=find_word_end(v);
1128
    if (*nextv != '\0'){
1129
      *nextv++='\0';
1130
    }
8925 bpr 1131
    v=getvar(v);
1132
    if(v) puts(v); else putchar('\n');
8216 bpr 1133
  }
1134
}
1135
 
10 reyssat 1136
int main(int argc, char *argv[], char *envp[])
1137
{
12011 bpr 1138
    char *p, homebuf[MAX_FNAME+1], lbuf[32], buf[64];
10 reyssat 1139
    int inlen=0;
8155 bpr 1140
/*    int mfd; */
8195 bpr 1141
 
10 reyssat 1142
    class_dir[0]=0;
1143
    substitute=substit; buffer_init(); var_init();
7673 bpr 1144
/* WIMS internal locale is always C. */
10 reyssat 1145
    setenv("LANG","C",1); umask(022);
1146
    setenv("LANGUAGE","us",1);
1147
    setenv("LC_ALL","C",1);
1148
    if(argc>1) {
7673 bpr 1149
      if(strcasecmp(argv[1],"table")==0) {
1150
          if(verify_tables()) internal_error("Table disorder.");
1151
          else printf("Table orders OK.\n");
1152
          return 0;
1153
      }
1154
      if(strcasecmp(argv[1],"version")==0) {
1155
          printf("%s",wims_version); return 0;
1156
      }
1157
      if(strcasecmp(argv[1],"defaults")==0) {
1158
          config_defaults(); return 0;
1159
      }
8216 bpr 1160
      if(strcasecmp(argv[1],"test")==0) {
8851 bpr 1161
/* launches a test suite */
12288 bpr 1162
        if (argc < 5) {
1163
          printf("Not enough arguments to launch a test; usage:\n");
1164
          printf("wims test path_to_file name_of_proc_file 'var1 var2 ...'\n\n");
1165
          printf("the file at path_to_file/name_of_proc_file will be evaluated by wims for\nexec commands, then the values of var1, var2, ... will be printed\nin the standard output, one per line.\n");
1166
          return 1;
1167
        }
1168
        test_suite(argv[2], argv[3], argv[4]);
1169
        return 0;
1170
      }
10 reyssat 1171
    }
1172
    p=getenv("SERVER_SOFTWARE"); if(p!=NULL && strcasecmp(p,"WIMS")==0)
1173
      httpd_type=httpd_wims;
1174
    p=getenv("REMOTE_ADDR"); if(p!=NULL) remote_addr=p;
1175
    p=getenv("REMOTE_HOST"); if(p!=NULL) remote_host=p;
1176
    nowtime=time(0); now=localtime(&nowtime);
9286 bpr 1177
/* nowtime contains the seconds elapsed from EPOCH (1970)
1178
   but tm_year is set to current year-1900.
1179
 */
10 reyssat 1180
    memmove(&Now, now, sizeof(Now)); now=&Now;
1181
    snprintf(nowstr,sizeof(nowstr),"%04d%02d%02d.%02d:%02d:%02d",
7673 bpr 1182
           (now->tm_year)+1900,(now->tm_mon)+1,now->tm_mday,
1183
           now->tm_hour,now->tm_min,now->tm_sec);
10 reyssat 1184
    p=getenv("QUERY_STRING");
1185
    if(p==NULL || *p==0) getpost();
1186
    else if(strncmp(p,"form-data",9)==0) inlen=formdata(p);
7673 bpr 1187
 
10 reyssat 1188
    force_setvar("wims_now",nowstr);
1189
    snprintf(lbuf,sizeof(lbuf),"%lu",nowtime);
1190
    force_setvar("wims_nowseconds",lbuf);
1191
    nowtime=time(0);
1192
    initalarm();
7673 bpr 1193
 
10 reyssat 1194
    executed_gotos=insert_no=output_length=0; ins_alt[0]=0;
7673 bpr 1195
    setvar("empty","");       /* lock this variable */
10 reyssat 1196
    setvar("wims_version",wims_version);
1197
    setvar("wims_version_date",wims_version_date);
1198
    setvar("wims_main_font","utf-8");
1199
    take_httpd_vars();
1200
 
1201
    main_configure();
1202
    checklogd();
8155 bpr 1203
/* mfd=shm_open(SHM_NAME,O_RDONLY,-1);
1204
 * if(mfd==-1) internal_error("Unable to find shared memory.");
1205
 * shmptr=mmap(0,SHM_SIZE,PROT_READ,MAP_SHARED,mfd,0);
1206
 * if(shmptr==MAP_FAILED) internal_error("Shared memory failure.");
1207
 */
7673 bpr 1208
    getppid(); /* this is the first sysmask trigger, must be after checklogd() */
10 reyssat 1209
    predetermine_language();
6784 kbelabas 1210
    /* modify a few rlimits for 64-bit processors */
1211
    if (sizeof(long) == 8) {
1212
      rlimit_as*=2;    /* virtual memory size */
1213
      rlimit_data*=2;  /* data segment size; maxima requires a lot */
1214
      rlimit_stack*=2; /* stack size */
1215
    }
10 reyssat 1216
    set_rlimits();
12011 bpr 1217
    /*init_random();*/
1218
    seed_time(); p=getvar("wims_seed"); mystrncpy(buf,p,sizeof(buf)); exec_setseed(buf);
10 reyssat 1219
    module_configure();
1220
    set_job_ident();
1221
    m_file.name[0]=0;m_file.linecnt=m_file.linepointer=0;
1222
    p=getenv("QUERY_STRING");
1223
    if(p==NULL || strlen(p)==0) {
7673 bpr 1224
      setvar("lang",lang);
1225
      snprintf(homebuf,sizeof(homebuf),"module=%s",home_module);
1226
      p=homebuf;
10 reyssat 1227
    }
1228
    if(strlen(p)>=QUERY_STRING_LIMIT) user_error("parm_too_long");
1229
    if(mpboundary[0]==0) {
7673 bpr 1230
      var_str=xmalloc(strlen(p)+2);
1231
      parse_query_string(http2env(var_str,p),0);
10 reyssat 1232
    }
1233
    else {
7673 bpr 1234
      var_str=stdinbuf;
1235
      parse_query_string(inlen,1);
10 reyssat 1236
    }
1237
    if(ismhelp) {
7673 bpr 1238
      p=getvar(ro_name[ro_cmd]);
1239
      if(p==NULL || (strcmp(p,"help")!=0 && strcmp(p,"getins")!=0)) {
1240
          mhelp(); goto outgo;
1241
      }
10 reyssat 1242
    }
1243
    check_exam();
1244
    useropts();
1245
    special_cmds();
1246
    parse_ro_names();
1247
    manager_check();
1248
    access_check(0);
11132 bpr 1249
/* it is really for developing in wims, so no use in general */
12263 bpr 1250
  if (1==1) {
10051 bpr 1251
    if(strstr(tmp_debug,"yes")!=NULL && checkhost(manager_site)>=1)
1252
       trace_file = fopen(mkfname(NULL,"%s/%s",tmp_dir,"trace.txt"),"a");
12263 bpr 1253
  }
1254
  set_variables();
1255
  determine_font(getvar("module_language"));
1256
  determine_dirn(getvar("module_language"));
1257
  if(!robot_access && session_prefix[0]!=0 && cmd_type!=cmd_help && !ismhelp)
1258
    lastout_file=creat(mkfname(NULL,"%s/%s",s2_prefix,lastout),
1259
                 S_IRUSR|S_IWUSR);
1260
  p=getvar("module_score");
1261
  if(p!=NULL) force_setvar("wims_seed_score",p);
1262
  p=getvar("module_category");
1263
  if(p==NULL || strstr(p,"tool")==NULL) default_form_method="get";
1264
  if(noout) {
1265
    write_logs(); save_session_vars();
1266
    goto outgo;
1267
  }
1268
  if(ismhelp) {
1269
    mhelp();
1270
  }
1271
  else {
1272
    main_phtml_put(html_file);
1273
    if(lastout_file!=-1) {
1274
        flushoutput(); close(lastout_file); putlastout();
10 reyssat 1275
    }
12263 bpr 1276
    write_logs(); save_session_vars();
1277
  }
1278
  outgo:
1279
  debug_output();
1280
  if (trace_file)  { fclose(trace_file); trace_file=NULL; }
1281
  if(var_str!=stdinbuf) free(var_str);
1282
  delete_pid();
1283
  if(mode!=mode_popup && trusted_module()) {
1284
    p=getvar("wims_mode");
1285
    if(p!=NULL && strcmp(p,"popup")==0) mode=mode_popup;
1286
  }
1287
  if(mode==mode_popup && insert_no==0) {
1288
    p=getvar("wims_mode");
1289
    if(p!=NULL && strcmp(p,"popup")==0) {
1290
      remove_tree(session_prefix);
7673 bpr 1291
 
12263 bpr 1292
      remove_tree(s2_prefix);
10 reyssat 1293
    }
12263 bpr 1294
  }
1295
  return 0;
10 reyssat 1296
}