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htsbauth.c
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2002-04-30
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/* ------------------------------------------------------------ */
/*
HTTrack Website Copier, Offline Browser for Windows and Unix
Copyright (C) Xavier Roche and other contributors
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Important notes:
- We hereby ask people using this source NOT to use it in purpose of grabbing
emails addresses, or collecting any other private information on persons.
This would disgrace our work, and spoil the many hours we spent on it.
Please visit our Website: http://www.httrack.com
*/
/* ------------------------------------------------------------ */
/* File: httrack.c subroutines: */
/* basic authentication: password storage */
/* Author: Xavier Roche */
/* ------------------------------------------------------------ */
#include "htsbauth.h"
/* specific definitions */
#include "htsglobal.h"
#include "htslib.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "htsnostatic.h"
/* END specific definitions */
// gestion des cookie
// ajoute, dans l'ordre
// !=0 : erreur
int cookie_add(t_cookie* cookie,char* cook_name,char* cook_value,char* domain,char* path) {
char* a=cookie->data;
char* insert;
char cook[16384];
// effacer Θventuel cookie en double
cookie_del(cookie,cook_name,domain,path);
if ((int)strlen(cook_value)>1024) return -1; // trop long
if ((int)strlen(cook_name)>256) return -1; // trop long
if ((int)strlen(domain)>256) return -1; // trop long
if ((int)strlen(path)>256) return -1; // trop long
if ((int)(
strlen(cookie->data)
+strlen(cook_value)
+strlen(cook_name)
+strlen(domain)
+strlen(path)
+256
) > cookie->max_len) return -1; // impossible d'ajouter
insert=a; // insΘrer ici
while (*a) {
if ( strlen(cookie_get(a,2)) < strlen(path) ) // long. path (le + long est prioritaire)
a=cookie->data+strlen(cookie->data); // fin
else {
a=strchr(a,'\n'); // prochain champ
if (a==NULL)
a=cookie->data+strlen(cookie->data); // fin
else
a++;
while(*a=='\n') a++;
insert=a; // insΘrer ici
}
}
// construction du cookie
strcpy(cook,domain);
strcat(cook,"\t");
strcat(cook,"TRUE");
strcat(cook,"\t");
strcat(cook,path);
strcat(cook,"\t");
strcat(cook,"FALSE");
strcat(cook,"\t");
strcat(cook,"1999999999");
strcat(cook,"\t");
strcat(cook,cook_name);
strcat(cook,"\t");
strcat(cook,cook_value);
strcat(cook,"\n");
if (!( ((int) strlen(cookie->data) + (int) strlen(cook)) < cookie->max_len)) return -1; // impossible d'ajouter
cookie_insert(insert,cook);
#if DEBUG_COOK
printf("add_new cookie: name=\"%s\" value=\"%s\" domain=\"%s\" path=\"%s\"\n",cook_name,cook_value,domain,path);
//printf(">>>cook: %s<<<\n",cookie->data);
#endif
return 0;
}
// effacer cookie si existe
int cookie_del(t_cookie* cookie,char* cook_name,char* domain,char* path) {
char *a,*b;
b=cookie_find(cookie->data,cook_name,domain,path);
if (b) {
a=cookie_nextfield(b);
cookie_delete(b,(int) (a - b));
#if DEBUG_COOK
printf("deleted old cookie: %s %s %s\n",cook_name,domain,path);
#endif
}
return 0;
}
// rechercher cookie α partir de la position s (par exemple s=cookie.data)
// renvoie pointeur sur ligne, ou NULL si introuvable
// path est alignΘ α droite et cook_name peut Ωtre vide (chercher alors tout cookie)
// .doubleclick.net TRUE / FALSE 1999999999 id A
char* cookie_find(char* s,char* cook_name,char* domain,char* path) {
char* a=s;
while (*a) {
int t;
if (strnotempty(cook_name)==0)
t=1; // accepter par dΘfaut
else
t=( strcmp(cookie_get(a,5),cook_name)==0 ); // tester si mΩme nom
if (t) { // mΩme nom ou nom qualconque
//
char* chk_dom=cookie_get(a,0); // domaine concernΘ par le cookie
if ((int) strlen(chk_dom) <= (int) strlen(domain)) {
if ( strcmp(chk_dom,domain+strlen(domain)-strlen(chk_dom))==0 ) { // mΩme domaine
//
char* chk_path=cookie_get(a,2); // chemin concernΘ par le cookie
if ((int) strlen(chk_path) <= (int) strlen(path)) {
if (strncmp(path,chk_path,strlen(chk_path))==0 ) { // mΩme chemin
return a;
}
}
}
}
}
a=cookie_nextfield(a);
}
return NULL;
}
// renvoie prochain champ
char* cookie_nextfield(char* a) {
char* b=a;
a=strchr(a,'\n'); // prochain champ
if (a==NULL)
a=b+strlen(b); // fin
else
a++;
while(*a=='\n') a++;
return a;
}
// lire cookies.txt
// lire Θgalement (Windows seulement) les *@*.txt (cookies IE copiΘs)
// !=0 : erreur
int cookie_load(t_cookie* cookie,char* fpath,char* name) {
cookie->data[0]='\0';
// Fusionner d'abord les Θventuels cookies IE
#if HTS_WIN
{
WIN32_FIND_DATA find;
HANDLE h;
char pth[MAX_PATH + 32];
strcpy(pth,fpath);
strcat(pth,"*@*.txt");
h = FindFirstFile(pth,&find);
if (h != INVALID_HANDLE_VALUE) {
do {
if (!(find.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ))
if (!(find.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM )) {
FILE* fp=fopen(fconcat(fpath,find.cFileName),"rb");
if (fp) {
char cook_name[256];
char cook_value[1000];
char domainpathpath[512];
//
char domain[256]; // domaine cookie (.netscape.com)
char path[256]; // chemin (/)
int cookie_merged=0;
linput(fp,cook_name,250);
if (!feof(fp)) {
linput(fp,cook_value,250);
if ( (!feof(fp)) && (strnotempty(cook_value)) ) {
linput(fp,domainpathpath,500);
if (strnotempty(domainpathpath)) {
if (ident_url_absolute(domainpathpath,domain,path)>=0) {
cookie_add(cookie,cook_name,cook_value,domain,path);
cookie_merged=1;
}
}
}
}
fclose(fp);
if (cookie_merged)
remove(fconcat(fpath,find.cFileName));
} // if fp
}
} while(FindNextFile(h,&find));
FindClose(h);
}
}
#endif
// Ensuite, cookies.txt
{
FILE* fp = fopen(fconcat(fpath,name),"rb");
if (fp) {
char line[8192];
while( (!feof(fp)) && (((int) strlen(cookie->data)) < cookie->max_len)) {
rawlinput(fp,line,8100);
if (strnotempty(line)) {
if (strlen(line)<8000) {
if (line[0]!='#') {
char domain[256]; // domaine cookie (.netscape.com)
char path[256]; // chemin (/)
char cook_name[256]; // nom cookie (MYCOOK)
char cook_value[8192]; // valeur (ID=toto,S=1234)
strcpy(domain,cookie_get(line,0)); // host
strcpy(path,cookie_get(line,2)); // path
strcpy(cook_name,cookie_get(line,5)); // name
strcpy(cook_value,cookie_get(line,6)); // value
#if DEBUG_COOK
printf("%s\n",line);
#endif
cookie_add(cookie,cook_name,cook_value,domain,path);
}
}
}
}
fclose(fp);
return 0;
}
}
return -1;
}
// Θcrire cookies.txt
// !=0 : erreur
int cookie_save(t_cookie* cookie,char* name) {
if (strnotempty(cookie->data)) {
char line[8192];
FILE* fp = fopen(fconv(name),"wb");
if (fp) {
char* a=cookie->data;
fprintf(fp,"# HTTrack Website Copier Cookie File"LF"# This file format is compatible with Netscape cookies"LF);
do {
a+=binput(a,line,8000);
fprintf(fp,"%s"LF,line);
} while(strnotempty(line));
fclose(fp);
return 0;
}
} else
return 0;
return -1;
}
// insertion chaine ins avant s
void cookie_insert(char* s,char* ins) {
char* buff;
if (strnotempty(s)==0) { // rien α faire, juste concat
strcat(s,ins);
} else {
buff=(char*) malloc(strlen(s)+2);
if (buff) {
strcpy(buff,s); // copie temporaire
strcpy(s,ins); // insΘrer
strcat(s,buff); // copier
free(buff);
}
}
}
// destruction chaine dans s position pos
void cookie_delete(char* s,int pos) {
char* buff;
if (strnotempty(s+pos)==0) { // rien α faire, effacer
s[0]='\0';
} else {
buff=(char*) malloc(strlen(s+pos)+2);
if (buff) {
strcpy(buff,s+pos); // copie temporaire
strcpy(s,buff); // copier
free(buff);
}
}
}
// renvoie champ param de la chaine cookie_base
// ex: cookie_get("ceci est<tab>un<tab>exemple",1) renvoi "un"
char* cookie_get(char* cookie_base,int param) {
char* buffer;
//
char * limit;
NOSTATIC_RESERVE(buffer, char, 8192);
while(*cookie_base=='\n') cookie_base++;
limit = strchr(cookie_base,'\n');
if (!limit) limit=cookie_base+strlen(cookie_base);
if (limit) {
if (param) {
int i;
for(i=0;i<param;i++) {
if (cookie_base) {
cookie_base=strchr(cookie_base,'\t'); // prochain tab
if (cookie_base) cookie_base++;
}
}
}
if (cookie_base) {
if ( cookie_base < limit) {
char* a = cookie_base;
while( (*a) && (*a!='\t') && (*a!='\n')) a++;
buffer[0]='\0';
strncat(buffer,cookie_base,(int) (a - cookie_base));
return buffer;
} else
return "";
} else
return "";
} else
return "";
}
// fin cookies
// -- basic auth --
/* dΘclarer un rΘpertoire comme possΘdant une authentification propre */
int bauth_add(t_cookie* cookie,char* adr,char* fil,char* auth) {
if (cookie) {
if (!bauth_check(cookie,adr,fil)) { // n'existe pas dΘja
bauth_chain* chain=&cookie->auth;
char* prefix=bauth_prefix(adr,fil);
/* fin de la chaine */
while(chain->next)
chain=chain->next;
chain->next=(bauth_chain*) calloc(sizeof(bauth_chain),1);
if (chain->next) {
chain=chain->next;
chain->next=NULL;
strcpy(chain->auth,auth);
strcpy(chain->prefix,prefix);
return 1;
}
}
}
return 0;
}
/* tester adr et fil, et retourner authentification si nΘcessaire */
/* sinon, retourne NULL */
char* bauth_check(t_cookie* cookie,char* adr,char* fil) {
if (cookie) {
bauth_chain* chain=&cookie->auth;
char* prefix=bauth_prefix(adr,fil);
while(chain) {
if (strnotempty(chain->prefix)) {
if (strncmp(prefix,chain->prefix,strlen(chain->prefix))==0) {
return chain->auth;
}
}
chain=chain->next;
}
}
return NULL;
}
char* bauth_prefix(char* adr,char* fil) {
char* prefix;
char* a;
NOSTATIC_RESERVE(prefix, char, HTS_URLMAXSIZE*2);
strcpy(prefix,jump_identification(adr));
strcat(prefix,fil);
a=strchr(prefix,'?');
if (a) *a='\0';
if (strchr(prefix,'/')) {
a=prefix+strlen(prefix)-1;
while(*a != '/') a--;
*(a+1)='\0';
}
return prefix;
}