WebSVN – wimsdev – Blame – /trunk/wims/src/wims.c

Rev	Author	Line No.	Line
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 */
12381	bpr	305	{"exotrymax", 0},
12263	bpr	306	{"firstname", 1},
		307	{"forum_limit", 1},
		308	{"home", 1},
		309	{"institutionname", 1},
		310	{"isexam", 0}, /* whether the sheet is an exam sheet */
		311	{"ismanager", 0},
		312	{"lastname", 1},
		313	{"mode", 0}, /* operating mode */
		314	{"module_start_time", 0},
		315	{"now", 1}, /* date and time, yyyymmdd.hh:mm:ss */
		316	{"nowseconds", 1}, /* date and time, seconds since EPOCH */
		317	{"nr", 1}, /* non-readable variables in user file, words */
		318	{"nw", 1}, /* non-writable variables in user file, words */
		319	{"otherclass", 1}, /* Remember other logins */
		320	{"participate", 1}, /* superclass definition */
		321	{"prefix", 1}, /* user file prefix */
		322	{"protocol", 0}, /* http protocol */
		323	{"rafale", 0}, /* rapidfire request information */
		324	{"readable", 1}, /* readable variables in user file, words */
		325	{"realuser", 1}, /* real user for supervisor in gateway */
		326	{"req_time", 0}, /* time of the request */
		327	{"sclassdir", 1},
		328	{"scorereg", 0}, /* score registration flag */
		329	{"seed", 0},
		330	{"seed_repeat",0},
		331	{"seed_score", 0},
12363	bpr	332	{"seedcnt",0},
		333	{"seedlastcnt",0},
12263	bpr	334	{"sequence", 0}, /* sequence number */
		335	{"sescookie", 1}, /* session cookie */
		336	{"sesdir", 1},
		337	{"session_serial", 0}, /* request serial in the session */
		338	{"session_start_time", 0},
		339	{"sheet", 0}, /* sheet number */
		340	{"sup_secure", 1}, /* secure level of supervisor */
		341	{"superclass", 1}, /* superclass code */
		342	{"superclass_quota", 1},
		343	{"supertype", 1}, /* superclass type */
		344	{"supervise", 1}, /* superclass definition */
		345	{"supervisor", 1}, /* real name of the supervisor */
		346	{"supervisormail",1}, /* email of supervisor */
		347	{"trustfile", 1}, /* trusted files in special adm modules */
		348	{"useropts", 1}, /* user options */
		349	{"writable", 1}, /* writable variables in user file, words */
10	reyssat	350	};
8185	bpr	351	int INTERNAL_NAME_NO=(sizeof(internal_name)/sizeof(internal_name[0]));
10	reyssat	352
		353	char *httpd_vars[]={
12263	bpr	354	"HTTP_ACCEPT",
		355	"HTTP_ACCEPT_CHARSET",
		356	"HTTP_ACCEPT_LANGUAGE",
		357	"HTTP_COOKIE",
		358	"HTTP_HOST",
		359	"HTTP_USER_AGENT",
		360	"HTTP_X_REQUESTED_WITH",
		361	"HTTPS",
		362	"QUERY_STRING",
		363	"REMOTE_HOST",
		364	"REMOTE_ADDR",
		365	"REMOTE_PORT",
		366	"REQUEST_METHOD",
		367	"SCRIPT_NAME",
		368	"SERVER_NAME",
		369	"SERVER_SOFTWARE",
		370	"SERVER_PROTOCOL"
10	reyssat	371	};
		372	#define HTTPD_VAR_NO (sizeof(httpd_vars)/sizeof(httpd_vars[0]))
		373
8155	bpr	374	/* security: these variables will not be visible to child processes */
10	reyssat	375	char *unsetvars[]={
12263	bpr	376	"DOCUMENT_ROOT","SERVER_SIGNATURE","SERVER_SOFTWARE",
10	reyssat	377	"UNIQUE_ID","HTTP_KEEP_ALIVE","SSL_SESSION_ID"
		378	};
		379	#define unsetvarcnt (sizeof(unsetvars)/sizeof(unsetvars[0]))
		380
		381	int httpd_type=httpd_apache;
		382
7673	bpr	383	char remote_addr=""; / storing for performance */
10	reyssat	384	char *remote_host="";
		385
		386	char ref_name[2048], ref_base[2048];
		387
		388	void put_special_page(char *pname);
		389	void useropts(void);
		390
7673	bpr	391	/* Make certain httpd variables readable by modules */
10	reyssat	392	void take_httpd_vars(void)
		393	{
12263	bpr	394	int i;
		395	char *p, buf[MAX_NAMELEN+1];
		396	var_noexport=1;
		397	for(i=0;i<HTTPD_VAR_NO;i++) {
		398	snprintf(buf,sizeof(buf),"httpd_%s",httpd_vars[i]);
		399	if((p=getenv(httpd_vars[i]))!=NULL) setvar(buf,p);
		400	}
		401	var_noexport=0;
7673	bpr	402
12263	bpr	403	for(i=0;i<unsetvarcnt;i++) unsetenv(unsetvars[i]);
		404	/* IPv4 IPv6*/
		405	p=getenv("REMOTE_ADDR");if(p!=NULL && (strcmp(p,"127.0.0.1")==0 \|\| strcmp(p,"::1")==0)) human_access=1;
		406	p=getenv("HTTP_REFERER"); if(p!=NULL && *p!=0) setvar("wims_referer",p);
10	reyssat	407	}
		408
11735	obado	409	/* cookie2session */
10	reyssat	410	void cookie2session(void)
		411	{
12263	bpr	412	char cksession[64], psession[32], ckey, p;
		413	char nbuf[MAX_FNAME+1];
10	reyssat	414
12263	bpr	415	if(mode==mode_popup) return;
		416	if(cookiegot[0]==0) {
		417	ckset: cookiegot[0]=0; setcookie=1; return;
		418	}
		419	p=getvar("special_parm");
		420	if(p!=NULL && strcmp(p,"ignorecookie")==0) return;
		421	mystrncpy(cksession,cookiegot,sizeof(cksession));
		422	ckey=strchr(cksession,'-');
		423	if(ckey==NULL) goto ckset; else *ckey++=0;
		424	p=getvar("wims_session"); if(p==NULL) p="";
		425	if(strstr(p,"new")!=NULL) goto ckset;
		426	mystrncpy(psession,p,sizeof(psession));
		427	p=strchr(psession,'_'); if(p!=NULL) *p=0;
		428	if(psession[0]!=0) {
		429	if(strcmp(psession,cksession)==0) return;
		430	if(session_exists(psession)) goto ckset;
		431	if(session_exists(cksession)) goto change;
		432	}
		433	else {
		434	if(!session_exists(cksession)) return;
		435	change:
		436	p=getenv("HTTPS");
		437	if(p!=NULL && strcasecmp(p,"on")==0) goto ckset;
		438	mkfname(nbuf,"%s/%s/var",session_dir,cksession);
		439	getdef(nbuf,"w_wims_ismanager",tmplbuf);
		440	if(tmplbuf[0]!=0 && tmplbuf[0]!='0') goto ckset;
		441	getdef(nbuf,"w_wims_protocol",tmplbuf);
		442	if(strcasecmp(tmplbuf,"https")==0) goto ckset;
		443	mkfname(nbuf,"%s/%s/var.stat",session_dir,cksession);
		444	getdef(nbuf,"wims_user",tmplbuf);
		445	if(tmplbuf[0]!=0) goto ckset;
		446	force_setvar(ro_name[ro_session],cksession);
		447	setsesdir(cksession);
		448	force_setvar("wims_subsession","");
		449	session_serial=0;
		450	}
10	reyssat	451	}
		452
		453	void determine_font(char *l)
		454	{
12263	bpr	455	int i;
7673	bpr	456
12263	bpr	457	if(l==NULL \|\| *l==0) return;
		458	for(i=0;i<charname_no && memcmp(charname[i].name,l,2);i++);
		459	if(i<charname_no) setvar("wims_main_font",charname[i].font);
10	reyssat	460	}
		461
3278	reyssat	462	void determine_dirn(char *l)
		463	{
12263	bpr	464	int i;
7673	bpr	465
12263	bpr	466	if(l==NULL \|\| *l==0) return;
		467	for(i=0;i<dirnname_no && memcmp(dirnname[i].name,l,2);i++);
		468	if(i<dirnname_no) setvar("wims_main_dirn",dirnname[i].dirn);
3278	reyssat	469	}
		470
10	reyssat	471	void predetermine_language(void)
		472	{
12263	bpr	473	char *p;
		474	int i,n;
10	reyssat	475
12263	bpr	476	if(pre_language[0]!=0) p=pre_language;
		477	else p=getenv("HTTP_ACCEPT_LANGUAGE");
		478	if(p!=NULL && strlen(p)>=2) {
10	reyssat	479	for(i=0;i<available_lang_no && memcmp(p,available_lang[i],2)!=0;i++);
12263	bpr	480	if(i<available_lang_no) goto lend;
		481	}
		482	p=getenv("HTTP_USER_AGENT");
		483	if(p!=NULL && strlen(p)>=5) {
		484	char *q;
		485	if((q=strchr(p,'['))!=NULL && islower((q+1)) && islower((q+2)) && *(q+3)==']') {
		486	char bb[4];
		487	bb[0]=(q+1);bb[1]=(q+2);bb[2]=0;
		488	for(i=0;i<available_lang_no && memcmp(bb,available_lang[i],2)!=0;i++);
		489	if(i<available_lang_no) {
		490	memmove(lang,bb,2); lang[2]=0;
		491	goto lend2;
		492	}
10	reyssat	493	}
12263	bpr	494	}
		495	p=getenv("HTTP_HOST"); if(p==NULL) goto lend2;
		496	n=strlen(p); if(n<=3 \|\| *(p+n-3)!='.') goto lend2;
		497	p=p+n-2;
		498	for(i=0;i<available_lang_no && memcmp(p,available_lang[i],2)!=0;i++);
		499	if(i<available_lang_no) {
		500	lend: memmove(lang,p,2); lang[2]=0;
		501	lend2: determine_font(lang);determine_dirn(lang);
		502	}
10	reyssat	503	}
		504
7673	bpr	505	/* print a special page */
10	reyssat	506	void put_special_page(char *pname)
		507	{
12263	bpr	508	determine_font(lang);
		509	determine_dirn(lang);
		510	phtml_put_base(mkfname(NULL,"%s.phtml.%s",pname,lang),0);
		511	write_logs();free(var_str);
10	reyssat	512	}
		513
7673	bpr	514	/* check whether the connection is a site manager. */
10	reyssat	515	void manager_check(void)
		516	{
12263	bpr	517	char p, pp, buf[16];
		518	struct stat confstat;
		519	int i;
7673	bpr	520
12263	bpr	521	manageable=0;
		522	if(robot_access \|\| *manager_site==0 \|\| checkhost(manager_site)<1)
		523	goto mend;
		524	if(manager_https) {
		525	p=getenv("HTTPS");
		526	if(p==NULL \|\| strcmp(p,"on")!=0) goto mend;
		527	}
8185	bpr	528	/* IPv4 IPv6*/
12263	bpr	529	if(strcmp(remote_addr,"127.0.0.1")==0 \|\| strcmp(remote_addr,"::1")==0) {
		530	int port, port2;
		531	char tester[128];
		532	p=getenv("REMOTE_PORT"); if(p==NULL) goto mend;
		533	port=atoi(p); if(port<1024 \|\| port>65535) goto mend;
		534	p=getenv("SERVER_PORT"); if(p==NULL) goto mend;
		535	port2=atoi(p); if(port2>=10000 \|\| port2<=0) goto mend;
7673	bpr	536	/* this is very non-portable */
12263	bpr	537	manageable=1;
		538	accessfile(tmplbuf,"r","/proc/net/tcp");
		539	snprintf(tester,sizeof(tester)," 0100007F:%04X 0100007F:%04X ",
		540	port,port2);
		541	p=strstr(tmplbuf,tester);
		542	if(p!=NULL) {
		543	pp=strchr(p,'\n'); if(pp!=NULL) *pp=0;
		544	if(strlen(p)>=75) {
		545	p=find_word_start(p+70); *find_word_end(p)=0;
		546	if(atoi(p)==geteuid()) manageable=2;
7673	bpr	547	}
10	reyssat	548	}
12263	bpr	549	}
		550	else manageable=1;
		551	i=stat(config_file,&confstat);
		552	if(i==0 && manageable>0 && (confstat.st_mode&(S_IRWXO\|S_IRWXG))!=0) manageable=-1;
		553	if(manageable>0 && !trusted_module()) manageable=0;
		554	if(manageable==1) {
		555	accessfile(tmplbuf,"r","%s/.manager",session_prefix);
		556	if(strstr(tmplbuf,"yes")!=NULL) manageable=2;
		557	}
		558	if(manageable==1) {
		559	p=getvar(ro_name[ro_module]);
		560	if(p!=NULL && strncmp(p,"adm/manage",strlen("adm/manage"))==0) {
		561	struct stat pstat;
		562	if(stat("../log/.wimspass",&pstat)==0) {
		563	if((S_IFMT&pstat.st_mode)!=S_IFREG \|\|
		564	((S_IRWXO\|S_IRWXG)&pstat.st_mode)!=0)
		565	manageable=-2;
7673	bpr	566	}
10	reyssat	567	}
12263	bpr	568	}
		569	mend:
		570	mystrncpy(buf,int2str(manageable),sizeof(buf));
		571	force_setvar("wims_ismanager",buf);
		572	if(manageable>=2) {
		573	struct rlimit rlim;
		574	rlimit_cpu*=10;
		575	rlim.rlim_cur=rlim.rlim_max=rlimit_cpu;
		576	setrlimit(RLIMIT_CPU,&rlim);
		577	mystrncpy(buf,int2str(rlimit_cpu),sizeof(buf));
		578	setvar("wims_cpu_limit",buf);
		579	initalarm();
		580	}
10	reyssat	581	}
		582
7673	bpr	583	/* check for robot access */
10	reyssat	584	void robot_check(void)
		585	{
12263	bpr	586	char ua, p, ses, c, *mod;
		587	int i;
10	reyssat	588
12263	bpr	589	if(human_access) return;
		590	mod=getvar(ro_name[ro_module]);
		591	if(mod!=NULL && strcmp(mod,"adm/raw")==0) return;
		592	ses=getvar(ro_name[ro_session]);
7673	bpr	593	/* user has valid session; OK */
12263	bpr	594	if(ses!=NULL && strncmp(ses,robot_session,strlen(robot_session))!=0
		595	&& strchr(ses,'/')==NULL
		596	&& ftest(mkfname(NULL,"%s/%s",s2_dir,ses))==is_dir)
		597	return;
		598	ua=getenv("HTTP_USER_AGENT"); if(ua==NULL) ua="";
		599	ua=find_word_start(ua);
		600	if(strncasecmp(ua,"Mozilla",strlen("Mozilla"))==0 &&
		601	(p=strstr(ua,"compatible"))!=NULL)
		602	ua=find_word_start(find_word_end(p));
		603	if(*ua) {
		604	for(i=0;i<good_agent_no
		605	&& strncasecmp(ua,good_agent[i],strlen(good_agent[i]));i++);
		606	if(i<good_agent_no) return;
		607	for(i=0;i<bad_agent_no
		608	&& strstr(ua,bad_agent[i])==NULL;i++);
		609	if(i<bad_agent_no) user_error("trapped");
		610	}
		611	force_setvar(ro_name[ro_session],robot_session);
		612	setsesdir(robot_session);
		613	c=getvar(ro_name[ro_cmd]);
		614	robot_access=1;
		615	if(c!=NULL && strcmp(c,"new") && strcmp(c,"intro")) {
		616	force_setvar(ro_name[ro_cmd],"robot_error");
		617	nph_header(450); put_special_page("robot");
		618	flushoutput(); flushlog(); exit(0);
		619	}
10	reyssat	620	}
		621
7673	bpr	622	/* type=0: ordinary; type=1: multipart/form-data */
10	reyssat	623	void parse_query_string(int len, int type)
		624	{
12263	bpr	625	int i,j,l,v,cmd_defined;
		626	int parenth=-1, ll, lb, dlen;
		627	char start, p, p1, pt, *b1="";
7673	bpr	628
12263	bpr	629	cmd_defined=0;
		630	setvar("wims_subsession","");
		631	ll=lb=0;
		632	if(type) {
		633	ll=strlen(mpboundary);
		634	start=strstr(var_str,mpboundary);
		635	if(start==NULL) start=var_str+strlen(var_str);
		636	if(strstr(var_str,"\r\n\r\n")!=NULL) b1="\r\n\r\n";
		637	else b1="\n\n";
		638	lb=strlen(b1);
		639	}
		640	else start=var_str;
		641	for(v=0, p1=start;p1<var_str+len;p1+=l) {
10	reyssat	642	if(type) {
12263	bpr	643	char p2, p3, p4, p5;
		644	p2=p1+ll; p3=memstr(p2,mpboundary,var_str+len-p2); l=p3-p1;
		645	p=memstr(p2,b1,var_str+len-p2); if(p>=p3) continue;
		646	p+=lb;
		647	if(p3<var_str+len) {
		648	while(*p3!='\n' && p3>p2) p3--;
		649	*p3=0;
		650	p3--; if(p3=='\r') p3=0;
		651	}
		652	dlen=p3-p;
		653	p2=memstr(p2,"name=",p3-p2); if(p2>=p3) continue;
		654	p2+=strlen("name="); if(*p2=='"') p2++;
		655	for(p3=p2; myisalnum(p3) \|\| strchr("._",p3)!=NULL; p3++);
		656	if(p3==p2) continue;
		657	if(p3-p2==strlen("wims_deposit") &&
		658	strncmp(p2,"wims_deposit",p3-p2)==0) {
		659	p4=memstr(p1,"filename=",p-p1); if(p4<p) {
		660	p4+=strlen("filename="); if(*p4=='"') {
		661	p4++; p5=strchr(p4,'"');
		662	if(p5==NULL \|\| p5-p4>=MAX_FNAME) goto emptyquote;
7673	bpr	663	}
12263	bpr	664	else {
		665	emptyquote:
		666	for(p5=p4; p5<p && !isspace(*p5) &&
		667	strchr(";\"~#?=,'",p5)==NULL; p5++);
		668	}
		669	if(p5>p4) {
		670	*p5=0;
		671	for(p5--;
		672	p5>=p4 && !isspace(p5) && strchr("/\\:",p5)==NULL;
		673	p5--);
		674	if(p5>=p4) p4=p5+1;
		675	if(*p4==0) goto noname;
		676	if(strstr(p4,"..")!=NULL \|\| *p4=='.')
		677	p4="noname.file";
		678	setvar("wims_deposit",p4);
		679	}
		680	else {
		681	noname: setvar("wims_deposit","noname.file");
		682	}
7673	bpr	683	}
12263	bpr	684	deplen=dlen;
		685	}
		686	*p3=0; l-=p2-p1; p1=p2;
		687	}
		688	else {
		689	p1=find_word_start(p1);
		690	l=strlen(p1)+1; p=strchr(p1,'=');
		691	if(p==NULL) p=p1+strlen(p1);
		692	if(*p==0 && l>1) {
		693	user_variable[v].name="no_name";
		694	user_variable[v].value=p1;
		695	coord_input=1;
		696	goto nnext;
7673	bpr	697	}
12263	bpr	698	*p++=0;
		699	}
7673	bpr	700	/* empty name or empty value: ignore */
12263	bpr	701	if(p1==0 \|\| p==0) continue;
7673	bpr	702	/* We do not treat names containing '.' */
12263	bpr	703	for(pt=strchr(p1,'.'); pt; pt=strchr(++pt,'.')) *pt='_';
7673	bpr	704	/* Restrictions on variable names */
12263	bpr	705	for(pt=p1; myisalnum(pt) \|\| pt=='_'; pt++);
		706	if(*pt) continue;
		707	if(strcmp(p1,"wims_deposit")!=0) _tolinux(p);
7673	bpr	708	/* This is a restriction:
8155	bpr	709	* Every parameter must have matching parentheses.
		710	*/
12263	bpr	711	if(parenth==-1 && strncmp(p1,"freepar_",strlen("freepar_"))!=0
7673	bpr	712	&& strcmp(p1,"wims_deposit")!=0
		713	&& check_parentheses(p,1)) parenth=v;
12263	bpr	714	if(strcmp(p1,"special_parm")==0 && strcmp(p,"wims")==0)
7673	bpr	715	human_access=1;
12263	bpr	716	j=search_list(ro_name,RO_NAME_NO,sizeof(ro_name[0]),p1);
		717	if(j>=0) {
		718	if(j==ro_session) {
		719	p=find_word_start(p); *find_word_end(p)=0;
		720	if(strlen(p)>MAX_SESSIONLEN) continue;
		721	if(strcmp(p,robot_session)==0) p="";
		722	if(strcasecmp(p,"popup")==0) {
		723	mode=mode_popup;
		724	force_setvar("wims_mode","popup");
		725	force_setvar("session","");
7673	bpr	726	continue;
12263	bpr	727	}
7673	bpr	728	}
12263	bpr	729	if(j==ro_module) module_defined=1;
		730	if(j==ro_cmd) {
		731	p=find_word_start(p); *find_word_end(p)=0;
		732	if(strlen(p)>16) continue;
		733	cmd_defined=1;
7673	bpr	734	}
12263	bpr	735	if(j==ro_lang) {
		736	if(strlen(p)!=2) continue;
		737	for(i=0;i<available_lang_no && strcmp(available_lang[i],p)!=0;i++);
		738	if(i<available_lang_no) {user_lang=1; ovlstrcpy(lang,p);}
		739	else continue;
		740	}
		741	/* strip leading and trailing '/'s in module name */
		742	if(j==ro_module) {
		743	p=find_word_start(p); *find_word_end(p)=0;
		744	while(*p=='/') p++;
		745	while(p!=0 && (p+strlen(p)-1)=='/') *(p+strlen(p)-1)=0;
		746	if(strlen(p)>MAX_MODULELEN) continue;
		747	}
		748	setvar(p1,p);
		749	if(j==ro_session && mode!=mode_popup) {
		750	char pp, pr;
		751	char buf[1024];
		752	mystrncpy(buf,p,sizeof(buf));
		753	if((pp=strchr(buf,'.'))!=NULL) {
		754	*pp++=0; session_serial=atoi(pp);
		755	if(pp<0) pp=0;
		756	}
		757	else session_serial=0;
		758	pp=strchr(buf,'_');
		759	if(pp!=NULL && (pr=strstr(pp,"_mhelp"))!=NULL) {
		760	*pr=0; ismhelp=1; lastout_file=-1;
		761	setvar("wims_inssub","mh");
		762	}
		763	force_setvar("wims_session",buf);
		764	if(pp!=NULL) force_setvar("wims_subsession",pp);
		765	}
		766	continue;
10	reyssat	767	}
12263	bpr	768	user_variable[v].name=p1;
		769	user_variable[v].value=p;
		770	nnext:v++; if(v>=MAX_VAR_NUM) user_error("too_many_variables");
		771	}
		772	user_var_no=v;
		773	if(parenth>=0) {
		774	char buf[16];
		775	mystrncpy(buf,int2str(user_var_no),sizeof(buf));
		776	setvar("user_var_no",buf);
		777	for(i=0;i<user_var_no;i++) {
		778	snprintf(buf,sizeof(buf),"name%d",i);
		779	setvar(buf,user_variable[i].name);
		780	snprintf(buf,sizeof(buf),"value%d",i);
		781	setvar(buf,user_variable[i].value);
10	reyssat	782	}
12263	bpr	783	mystrncpy(buf,int2str(parenth),sizeof(buf));
		784	setvar("bad_parentheses",buf);
		785	user_error("unmatched_parentheses");
		786	}
		787	p=getenv("SCRIPT_NAME");
		788	if(p!=NULL && (p=strstr(p,"/getfile/"))!=NULL) {
		789	p+=strlen("/getfile/");
		790	force_setvar(ro_name[ro_cmd],commands[cmd_getfile]);
		791	force_setvar("special_parm",p);
		792	cmd_defined=1;
		793	}
		794	if(module_defined && !cmd_defined) setvar(ro_name[ro_cmd],commands[cmd_intro]);
		795	robot_check(); cookie2session();
10	reyssat	796	}
		797
7673	bpr	798	/* parse special commands */
10	reyssat	799	void special_cmds(void)
		800	{
12263	bpr	801	char c, p;
		802	int i;
		803	long int l=-1;
7673	bpr	804
12263	bpr	805	c=getvar(ro_name[ro_cmd]);
		806	if(c==NULL \|\| c==0) { / no module name nor command */
		807	setvar(ro_name[ro_module],home_module);
		808	setvar(ro_name[ro_cmd],commands[cmd_new]);
		809	return;
		810	}
		811	for(i=0;i<CMD_NO && strcmp(commands[i],c)!=0; i++);
		812	switch(i) {
		813	case cmd_intro: {
		814	set_module_prefix();
		815	default_form_method="get";
		816	if(ftest(mkfname(NULL,"%s/%s",module_prefix,intro_file))<0) {
		817	force_setvar(ro_name[ro_cmd],commands[cmd_new]);
		818	return;
		819	}
		820	p=getvar("wims_session");
		821	if(p!=NULL && *p!=0) {
		822	if(set_session_prefix()==0) check_session();
		823	else {
		824	trap_check(p);
		825	if(strchr(p,'_')!=NULL && strchr(p,'/')==NULL) {
		826	get_static_session_var();
7673	bpr	827	}
12263	bpr	828	}
		829	}
7673	bpr	830	/* determine http protocol name. How to detect? */
12263	bpr	831	p=getenv("HTTPS");
		832	if(p!=NULL && strcmp(p,"on")==0) {
		833	protocol="https"; set_protocol();
7673	bpr	834	}
12263	bpr	835	force_setvar("wims_protocol",protocol);
		836	determine_font(lang);
		837	determine_dirn(lang);
		838	main_phtml_put(intro_file); debug_output();
		839	introend: write_logs();free(var_str);
		840	delete_pid(); exit(0);
		841	}
		842	case cmd_ref: {
		843	set_module_prefix();
		844	default_form_method="get";
		845	p=getvar("wims_session");
		846	if(p!=NULL && *p!=0) {
		847	if(set_session_prefix()==0) check_session();
		848	else trap_check(p);
7673	bpr	849	}
12263	bpr	850	determine_font(lang);
		851	determine_dirn(lang);
		852	main_phtml_put(ref_file); goto introend;
		853	}
		854	case cmd_getins: {
		855	c=getvar(ro_name[ro_special_parm]);
		856	if(c==NULL \|\| *c==0) {
		857	user_error_nolog=1; user_error("no_insnum");
		858	}
		859	if(*c=='/' \|\| strstr(c,"..")!=NULL) goto badins;
		860	set_session_prefix();
		861	if(strstr(session_prefix,"robot")!=NULL) exit(0);
		862	l=filelength("%s/%s",s2_prefix,c);
		863	if(l<0) {
		864	badins: user_error_nolog=1; user_error("bad_insnum");
		865	}
		866	{
		867	char *fmt;
		868	fmt=strchr(c,'.');
		869	if(fmt==NULL) {
		870	user_error_nolog=1; user_error("bad_insnum");
		871	}
		872	else fmt++;
7673	bpr	873
12263	bpr	874	nph_header(200);
10	reyssat	875	/* insert format problem; bricolage */
12263	bpr	876	printf("Content-type: image/%s\r\n\
10	reyssat	877	Content-length: %ld\r\n\r\n",fmt,l);
12263	bpr	878	catfile(stdout,"%s/%s",s2_prefix,c); exit(0);
7673	bpr	879	}
12263	bpr	880	}
		881	case cmd_getfile: {
		882	char fname[MAX_FNAME+1];
		883	c=getvar(ro_name[ro_special_parm]);
		884	if(c==NULL \|\| *c==0) {
		885	user_error_nolog=1; user_error("no_insnum");
		886	}
		887	if(*c=='/' \|\| strstr(c,"..")!=NULL) goto badfile;
7673	bpr	888
12263	bpr	889	set_session_prefix();
		890	if(strstr(session_prefix,"robot")!=NULL) exit(0);
		891	mkfname(fname,"%s/getfile/%s",session_prefix,c);
		892	l=filelength("%s",fname);
		893	if(l<0 && strchr(session_prefix,'_')!=NULL) {
		894	char *pt;
		895	mystrncpy(fname,session_prefix,sizeof(fname));
		896	pt=strrchr(fname,'_'); if(pt) *pt=0;
		897	snprintf(fname+(pt-fname),sizeof(fname)-(pt-fname),
		898	"/getfile/%s",c);
		899	l=filelength("%s",fname);
		900	}
		901	if(l<0) {
		902	badfile: user_error_nolog=1; user_error("bad_insnum");
		903	}
		904	if(l>512*1024) {
		905	struct rlimit rlim;
		906	rlimit_cpu=l/(101024);
		907	rlim.rlim_cur=rlim.rlim_max=rlimit_cpu;
		908	initalarm();
		909	}
		910	{
		911	char *p1;
		912	char mime[MAX_LINELEN+1];
		913	for(p1=c+strlen(c);p1>c && isalpha(*(p1-1)); p1--);
		914	ovlstrcpy(mime,"application/octet-stream");
		915	if(p1>c && *(p1-1)=='.') {
		916	setvar("translator_unknown",mime);
		917	setvar("dictionary","bases/sys/mime");
		918	snprintf(mime,sizeof(mime),"translator %s",p1);
		919	calc_exec(mime);
		920	}
		921	nph_header(200);
		922	printf("Content-type: %s\r\n\
10	reyssat	923	Content-length: %ld\r\n\r\n",mime,l);
12263	bpr	924	catfile(stdout,"%s",fname); exit(0);
7673	bpr	925	}
12263	bpr	926	}
12373	bpr	927	case cmd_close: {
		928	char *p, b2[32]; int w;
		929	char nbuf[MAX_FNAME+1], vbuf[MAX_LINELEN+1];
		930	p=getvar(ro_name[ro_session]);
		931	if(p==NULL \|\| strlen(p)<10 \|\|
		932	strchr(p,'/')!=NULL) return;
		933	mystrncpy(b2,p,sizeof(b2));
		934	p=strchr(b2,'.'); if(p!=NULL) *p=0;
		935	mkfname(nbuf,"%s/%s/var.stat",session_dir,b2);
		936	getdef(nbuf,"wims_caller",vbuf);
		937	if(vbuf[0]!=0) force_setvar(ro_name[ro_session],vbuf);
		938	w=wrapexec; wrapexec=1;
		939	call_sh("rm -Rf %s/%s* %s/%s* >/dev/null 2>&1",session_dir,b2,s2_dir,b2);
		940	wrapexec=w; cookiegot[0]=0;
		941	force_setvar(ro_name[ro_cmd],"new");
		942	}
		943	default: return;
12263	bpr	944	}
10	reyssat	945	}
		946
7673	bpr	947	/* This is run only when manually invoking the program.
8155	bpr	948	* Verifies the orderedness of various list tables.
		949	*/
10	reyssat	950	int verify_tables(void)
		951	{
		952	if(verify_order(calc_routine,CALC_FN_NO,sizeof(calc_routine[0]))) return -1;
		953	if(verify_order(exec_routine,EXEC_FN_NO,sizeof(exec_routine[0]))) return -1;
		954	if(verify_order(main_config,MAIN_CONFIG_NO,sizeof(main_config[0]))) return -1;
		955	if(verify_order(mathname,mathname_no,sizeof(mathname[0]))) return -1;
		956	if(verify_order(hmname,hmname_no,sizeof(hmname[0]))) return -1;
		957	if(verify_order(ro_name,RO_NAME_NO,sizeof(ro_name[0]))) return -1;
		958	if(verify_order(distr_cmd,distr_cmd_no,sizeof(distr_cmd[0]))) return -1;
		959	if(verify_order(internal_name,INTERNAL_NAME_NO,
7673	bpr	960	sizeof(internal_name[0]))) return -1;
10	reyssat	961	if(verify_order(tmathfn,tmathfn_no,sizeof(tmathfn[0]))) return -1;
		962	if(verify_order(tmathvar,tmathvar_no,sizeof(tmathvar[0]))) return -1;
		963	if(verify_order(modindex,MODINDEX_NO,sizeof(modindex[0]))) return -1;
		964	if(verify_order(exportvars,exportvarcnt,sizeof(exportvars[0]))) return -1;
		965	if(evaltab_verify()) return -1;
		966	if(textab_verify()) return -1;
		967	return 0;
		968	}
		969
		970	void config_defaults(void)
		971	{
3857	kbelabas	972	int i;
10	reyssat	973	for(i=0;i<MAIN_CONFIG_NO;i++) {
7673	bpr	974	if((1&main_config[i].is_integer)==1) {
		975	int pi = (int)main_config[i].address;
		976	printf("DF_%s=%d\n",main_config[i].name, *pi);
3857	kbelabas	977	}
7673	bpr	978	else {
3857	kbelabas	979	char ps = (char)main_config[i].address;
7673	bpr	980	printf("DF_%s=%s\n",main_config[i].name,*ps);
3857	kbelabas	981	}
10	reyssat	982	}
		983	}
		984
7673	bpr	985	/* get and set useroptions */
10	reyssat	986	void useropts(void)
		987	{
		988	char *p;
		989	setvar("lang",lang);
		990	p=getvar("useropts");
		991	if(p==NULL \|\| *p==0) p=getvar("wims_useropts");
		992	if(p!=NULL && *p!=0) {
6178	bpr	993	if(myisdigit(p[0])) {
		994	usertexsize=p[0]-'0';
6184	bpr	995	/* fourth digit is for special fonts*/
6178	bpr	996	if(p[1]!=0) { mathalign_base=p[1]-'0'; }
		997	}
6184	bpr	998	if(myisdigit(p[3]) && p[3]!=0){ spec_font=p[3]-'0';}
		999	}
		1000	if(mathalign_base==1) {
6178	bpr	1001	mathalign_sup1="<sup>"; mathalign_sup2="</sup>";
6184	bpr	1002	} else mathalign_sup1=mathalign_sup2="";
10	reyssat	1003	}
		1004
7673	bpr	1005	/* popup module help */
10	reyssat	1006	void mhelp(void)
		1007	{
		1008	char *p, buf[MAX_LINELEN+1];
		1009	main_phtml_put(""); buf[0]=0;
		1010	if(cmd_type!=cmd_help) {
7673	bpr	1011	phtml_put_base("closemhelp.phtml",0);
10	reyssat	1012	}
		1013	else {
7673	bpr	1014	phtml_put_base("mhelpheader.phtml",0);
		1015	p=getvar("special_parm");
		1016	if(p!=NULL && strcmp(p,"about")==0)
		1017	phtml_put("about.phtml",0);
11125	georgesk	1018	else phtml_put("help.phtml",0);
		1019	phtml_put_base("mhelptail.phtml",0);
7673	bpr	1020	exec_tail(buf);
10	reyssat	1021	}
		1022	}
		1023
		1024	#define READSTDIN_WINDOW 4096
		1025
		1026	void readstdin(int len)
		1027	{
		1028	int ll, l1, lt, lr;
		1029	int cpulim;
7673	bpr	1030
10	reyssat	1031	cpulim=rlimit_cpu; rlimit_cpu=3;
		1032	lr=len; l1=0;
		1033	while(lr>0) {
7673	bpr	1034	nowtime=time(0); initalarm();
		1035	ll=lr; if(ll>READSTDIN_WINDOW) ll=READSTDIN_WINDOW;
		1036	lt=fread(stdinbuf+l1,1,ll,stdin);
		1037	if(lt!=ll) user_error("parm_too_long");
		1038	lr-=ll; l1+=ll;
10	reyssat	1039	}
		1040	if(l1!=len) user_error("parm_too_long");
		1041	stdinbuf[len]=0; rlimit_cpu=cpulim;
		1042	}
		1043
7673	bpr	1044	/* input: p=QUERY_STRING. output: parameter length. */
		1045	/* Netscape puts form content into /tmp. */
10	reyssat	1046	int formdata(char *p)
		1047	{
		1048	char *pp;
		1049	int inlen;
		1050	char *ctype;
		1051	inlen=0; ctype=getenv("CONTENT_TYPE");
		1052	if(ctype==NULL \|\| strstr(ctype,"multipart/form-data")==NULL
		1053	\|\| (p=strstr(ctype,"boundary="))==NULL) {
7673	bpr	1054	bad: stdinbuf=""; return 0;
10	reyssat	1055	}
		1056	pp=getenv("CONTENT_LENGTH");
		1057	if(pp==NULL) goto bad;
		1058	inlen=atoi(pp); if(inlen<=10) goto bad;
		1059	if(inlen>=MAX_DEPOSITLEN) user_error("parm_too_long");
		1060	stdinbuf=xmalloc(inlen+1); readstdin(inlen);
		1061	p+=strlen("boundary=");
		1062	for(pp=p;myisalnum(pp) \|\| pp=='-'; pp++);
		1063	if(pp-p<sizeof(mpboundary)-2) {
7673	bpr	1064	memmove(mpboundary,p,pp-p); mpboundary[pp-p]=0;
10	reyssat	1065	}
7673	bpr	1066	/* empty data */
10	reyssat	1067	if(strstr(stdinbuf,mpboundary)==NULL \|\| strstr(stdinbuf,"name=")==NULL) {
7673	bpr	1068	free(stdinbuf); goto bad;
10	reyssat	1069	}
		1070	form_access=1; post_log();
		1071	return inlen;
		1072	}
		1073
7673	bpr	1074	/* get the content of POST */
10	reyssat	1075	void getpost(void)
		1076	{
		1077	int ll;
		1078	char *pp;
		1079	pp=getenv("CONTENT_LENGTH");
		1080	if(pp==NULL \|\| (ll=atoi(pp))<=0) {
7673	bpr	1081	stdinbuf=xmalloc(16); stdinbuf[0]=0;
10	reyssat	1082	}
		1083	else {
7673	bpr	1084	if(ll>QUERY_STRING_LIMIT) user_error("parm_too_long");
		1085	stdinbuf=xmalloc(ll+16); readstdin(ll);
		1086	if(ll>0) {
		1087	setenv("QUERY_STRING",stdinbuf,1);
		1088	form_access=1; post_log();
		1089	}
10	reyssat	1090	}
		1091	}
		1092
		1093	void buffer_init(void)
		1094	{
		1095	struct timeval tv;
7673	bpr	1096
10	reyssat	1097	mcachecnt=readnest=0;
		1098	mpboundary[0]=cookiegot[0]=cookieset[0]=cwdbuf[0]=0;
		1099	rscore_class[0]=rscore_user[0]=multiexec_random[0]=0;
		1100	lastftest[0]=0;
		1101	lastdatafile[0]=0; lastdata=xmalloc(WORKFILE_LIMIT);
		1102	outptr=outbuf;
		1103	instex_src[0]=instex_fname[0]=module_prefix[0]=0;
		1104	examlogf[0]=examlogd[0]=exam_sheetexo[0]=0;
		1105	stdinbuf=NULL;
		1106	mkfname(tmp_dir,"../tmp/forall");
		1107	mkfname(session_dir,"../%s",SESSION_BASE);
		1108	mkfname(s2_dir,"../%s",S2_BASE);
		1109	if(gettimeofday(&tv,NULL)) startmtime=startmtime2=0;
		1110	else {
7673	bpr	1111	startmtime=((tv.tv_sec%10000)*1000+tv.tv_usec/1000);
		1112	startmtime2=(tv.tv_sec%1000)*1000000+tv.tv_usec;
10	reyssat	1113	}
		1114	}
		1115
8216	bpr	1116	/**
		1117	* runs the test suite, to check whether the documented commands of modtool
		1118	* behave properly.
		1119	* @param prefix path to the proc file to process
		1120	* @param p name of the proc file to proceed
		1121	* @param vars a list of var names to print.
		1122	**/
		1123	void test_suite(char prefix, char p, char *vars){
		1124	char v, nextv;
		1125	mystrncpy(module_prefix, prefix, sizeof(module_prefix));
		1126	exec_read(p);
		1127	nextv=vars;
		1128	while (*nextv!='\0'){
		1129	v=find_word_start(nextv);
		1130	nextv=find_word_end(v);
		1131	if (*nextv != '\0'){
		1132	*nextv++='\0';
		1133	}
8925	bpr	1134	v=getvar(v);
		1135	if(v) puts(v); else putchar('\n');
8216	bpr	1136	}
		1137	}
		1138
10	reyssat	1139	int main(int argc, char argv[], char envp[])
		1140	{
12011	bpr	1141	char *p, homebuf[MAX_FNAME+1], lbuf[32], buf[64];
10	reyssat	1142	int inlen=0;
8155	bpr	1143	/* int mfd; */
8195	bpr	1144
10	reyssat	1145	class_dir[0]=0;
		1146	substitute=substit; buffer_init(); var_init();
7673	bpr	1147	/* WIMS internal locale is always C. */
10	reyssat	1148	setenv("LANG","C",1); umask(022);
		1149	setenv("LANGUAGE","us",1);
		1150	setenv("LC_ALL","C",1);
		1151	if(argc>1) {
7673	bpr	1152	if(strcasecmp(argv[1],"table")==0) {
		1153	if(verify_tables()) internal_error("Table disorder.");
		1154	else printf("Table orders OK.\n");
		1155	return 0;
		1156	}
		1157	if(strcasecmp(argv[1],"version")==0) {
		1158	printf("%s",wims_version); return 0;
		1159	}
		1160	if(strcasecmp(argv[1],"defaults")==0) {
		1161	config_defaults(); return 0;
		1162	}
8216	bpr	1163	if(strcasecmp(argv[1],"test")==0) {
8851	bpr	1164	/* launches a test suite */
12288	bpr	1165	if (argc < 5) {
		1166	printf("Not enough arguments to launch a test; usage:\n");
		1167	printf("wims test path_to_file name_of_proc_file 'var1 var2 ...'\n\n");
		1168	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");
		1169	return 1;
		1170	}
		1171	test_suite(argv[2], argv[3], argv[4]);
		1172	return 0;
		1173	}
10	reyssat	1174	}
		1175	p=getenv("SERVER_SOFTWARE"); if(p!=NULL && strcasecmp(p,"WIMS")==0)
		1176	httpd_type=httpd_wims;
		1177	p=getenv("REMOTE_ADDR"); if(p!=NULL) remote_addr=p;
		1178	p=getenv("REMOTE_HOST"); if(p!=NULL) remote_host=p;
		1179	nowtime=time(0); now=localtime(&nowtime);
9286	bpr	1180	/* nowtime contains the seconds elapsed from EPOCH (1970)
		1181	but tm_year is set to current year-1900.
		1182	*/
10	reyssat	1183	memmove(&Now, now, sizeof(Now)); now=&Now;
		1184	snprintf(nowstr,sizeof(nowstr),"%04d%02d%02d.%02d:%02d:%02d",
7673	bpr	1185	(now->tm_year)+1900,(now->tm_mon)+1,now->tm_mday,
		1186	now->tm_hour,now->tm_min,now->tm_sec);
10	reyssat	1187	p=getenv("QUERY_STRING");
		1188	if(p==NULL \|\| *p==0) getpost();
		1189	else if(strncmp(p,"form-data",9)==0) inlen=formdata(p);
7673	bpr	1190
10	reyssat	1191	force_setvar("wims_now",nowstr);
		1192	snprintf(lbuf,sizeof(lbuf),"%lu",nowtime);
		1193	force_setvar("wims_nowseconds",lbuf);
		1194	nowtime=time(0);
		1195	initalarm();
7673	bpr	1196
10	reyssat	1197	executed_gotos=insert_no=output_length=0; ins_alt[0]=0;
7673	bpr	1198	setvar("empty",""); /* lock this variable */
10	reyssat	1199	setvar("wims_version",wims_version);
		1200	setvar("wims_version_date",wims_version_date);
		1201	setvar("wims_main_font","utf-8");
		1202	take_httpd_vars();
		1203
		1204	main_configure();
		1205	checklogd();
8155	bpr	1206	/* mfd=shm_open(SHM_NAME,O_RDONLY,-1);
		1207	* if(mfd==-1) internal_error("Unable to find shared memory.");
		1208	* shmptr=mmap(0,SHM_SIZE,PROT_READ,MAP_SHARED,mfd,0);
		1209	* if(shmptr==MAP_FAILED) internal_error("Shared memory failure.");
		1210	*/
7673	bpr	1211	getppid(); /* this is the first sysmask trigger, must be after checklogd() */
10	reyssat	1212	predetermine_language();
6784	kbelabas	1213	/* modify a few rlimits for 64-bit processors */
		1214	if (sizeof(long) == 8) {
		1215	rlimit_as=2; / virtual memory size */
		1216	rlimit_data=2; / data segment size; maxima requires a lot */
		1217	rlimit_stack=2; / stack size */
		1218	}
10	reyssat	1219	set_rlimits();
12011	bpr	1220	/init_random();/
12363	bpr	1221	seed_time();
		1222	p=getvar("wims_seed");
		1223	mystrncpy(buf,p,sizeof(buf));
		1224	exec_setseed(buf);
10	reyssat	1225	module_configure();
		1226	set_job_ident();
		1227	m_file.name[0]=0;m_file.linecnt=m_file.linepointer=0;
		1228	p=getenv("QUERY_STRING");
		1229	if(p==NULL \|\| strlen(p)==0) {
7673	bpr	1230	setvar("lang",lang);
		1231	snprintf(homebuf,sizeof(homebuf),"module=%s",home_module);
		1232	p=homebuf;
10	reyssat	1233	}
		1234	if(strlen(p)>=QUERY_STRING_LIMIT) user_error("parm_too_long");
		1235	if(mpboundary[0]==0) {
7673	bpr	1236	var_str=xmalloc(strlen(p)+2);
		1237	parse_query_string(http2env(var_str,p),0);
10	reyssat	1238	}
		1239	else {
7673	bpr	1240	var_str=stdinbuf;
		1241	parse_query_string(inlen,1);
10	reyssat	1242	}
		1243	if(ismhelp) {
7673	bpr	1244	p=getvar(ro_name[ro_cmd]);
		1245	if(p==NULL \|\| (strcmp(p,"help")!=0 && strcmp(p,"getins")!=0)) {
		1246	mhelp(); goto outgo;
		1247	}
10	reyssat	1248	}
		1249	check_exam();
		1250	useropts();
		1251	special_cmds();
		1252	parse_ro_names();
		1253	manager_check();
		1254	access_check(0);
11132	bpr	1255	/* it is really for developing in wims, so no use in general */
12263	bpr	1256	if (1==1) {
10051	bpr	1257	if(strstr(tmp_debug,"yes")!=NULL && checkhost(manager_site)>=1)
12363	bpr	1258	trace_file = fopen(mkfname(NULL,"%s/%s",tmp_dir,"trace.txt"),"a");
12263	bpr	1259	}
		1260	set_variables();
		1261	determine_font(getvar("module_language"));
		1262	determine_dirn(getvar("module_language"));
		1263	if(!robot_access && session_prefix[0]!=0 && cmd_type!=cmd_help && !ismhelp)
		1264	lastout_file=creat(mkfname(NULL,"%s/%s",s2_prefix,lastout),
		1265	S_IRUSR\|S_IWUSR);
		1266	p=getvar("module_score");
		1267	if(p!=NULL) force_setvar("wims_seed_score",p);
		1268	p=getvar("module_category");
		1269	if(p==NULL \|\| strstr(p,"tool")==NULL) default_form_method="get";
		1270	if(noout) {
		1271	write_logs(); save_session_vars();
		1272	goto outgo;
		1273	}
		1274	if(ismhelp) {
		1275	mhelp();
		1276	}
		1277	else {
		1278	main_phtml_put(html_file);
		1279	if(lastout_file!=-1) {
12507	bpr	1280	flushoutput(); close(lastout_file); putlastout();
10	reyssat	1281	}
12263	bpr	1282	write_logs(); save_session_vars();
		1283	}
		1284	outgo:
		1285	debug_output();
		1286	if (trace_file) { fclose(trace_file); trace_file=NULL; }
		1287	if(var_str!=stdinbuf) free(var_str);
		1288	delete_pid();
		1289	if(mode!=mode_popup && trusted_module()) {
		1290	p=getvar("wims_mode");
		1291	if(p!=NULL && strcmp(p,"popup")==0) mode=mode_popup;
		1292	}
		1293	if(mode==mode_popup && insert_no==0) {
		1294	p=getvar("wims_mode");
		1295	if(p!=NULL && strcmp(p,"popup")==0) {
		1296	remove_tree(session_prefix);
7673	bpr	1297
12263	bpr	1298	remove_tree(s2_prefix);
10	reyssat	1299	}
12263	bpr	1300	}
		1301	return 0;
10	reyssat	1302	}

Subversion Repositories wimsdev

(root)/trunk/wims/src/wims.c – Rev 13458