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version 1.12, 2001/03/18 14:45:27 version 1.218, 2025/08/01 17:10:14
Line 1 Line 1
 /*  /** @file
         Parser          Parser: globals.
         Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)  
         Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)  
   
         $Id$          Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com)
           Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
 */  */
   
   #include "pa_config_includes.h"
   
   #ifdef XML
   #include "libxml/xmlversion.h"
   #include "libxslt/extensions.h"
   #include "libxslt/xsltutils.h"
   extern "C" {
   #include "libexslt/exslt.h"
   }
   #endif
   
 #include "pa_globals.h"  #include "pa_globals.h"
 #include "_string.h"  #include "pa_socks.h"
 #include "_double.h"  #include "pa_sapi.h"
 #include "_int.h"  #include "pa_xml_io.h"
 #include "_table.h"  #include "pa_common.h"
 #include "_form.h"  #include "pa_symbols.h"
 #include "_env.h"  
 #include "_request.h"  
 #include "_response.h"  
   
 Service_funcs service_funcs;  #include "pa_cache_managers.h"
   
 String *content_type_name;  #include "ltdl.h"
 String *body_name;  #include "pa_vregex.h"
   
 String *exception_method_name;  volatile const char * IDENT_PA_GLOBALS_C="$Id$" IDENT_PA_GLOBALS_H IDENT_PA_SAPI_H;
   
 String *unnamed_name;  // defines
 String *empty_string;  
   
 String *auto_method_name;  //#define PA_DEBUG_XML_GC_MEMORY
 String *main_method_name;  
   
 String *root_class_name;  // globals
 String *main_class_name;  
 String *env_class_name;  
 String *table_class_name;  
 String *form_class_name;  
 String *request_class_name;  
 String *response_class_name;  
   
 String *result_var_name;  short hex_value[0x100] = {
             0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
             0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
             0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
             0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  0,  0,  0,  0,  0,  0,
             0, 10, 11, 12, 13, 14, 15,  0,  0,  0,  0,  0,  0,  0,  0,  0,
             0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
             0, 10, 11, 12, 13, 14, 15,  0,  0,  0,  0,  0,  0,  0,  0,  0,
   };
   
 String *limits_name;  THREAD_LOCAL Request* thread_request=NULL; // every TLS should be referenced elsewhere, or GC will collect it
 String *post_max_size_name;  
   
 String *defaults_name;  void pa_register_thread_request(Request& r) {
           thread_request=&r;
   }
   
   /// retrives request set by pa_set_request function, useful in contextless places [slow]
   Request& pa_thread_request() {
           if(!thread_request)
                   throw Exception(0, 0, "request is not initialized");
           return *thread_request;
   }
   
 Hash *untaint_lang_name2enum;  
   
 short hex_value[0x100];  #ifdef XML
   
 static void setup_hex_value() {  class XML_Generic_error_info {
         int i;  public:/*internal, actually*/
         for (i=0; (i < 0x100); i++) {          char buf[MAX_STRING*5];
                 hex_value[i] = 0;          size_t used;
   public:
           XML_Generic_error_info() {
                   buf[used=0]=0;
         }          }
         hex_value['0'] = 0;               const char* get() {
         hex_value['1'] = 1;                       return used? buf: 0;
         hex_value['2'] = 2;               }
         hex_value['3'] = 3;       };
         hex_value['4'] = 4;       
         hex_value['5'] = 5;       THREAD_LOCAL XML_Generic_error_info* xml_generic_error_info = NULL;
         hex_value['6'] = 6;       
         hex_value['7'] = 7;       static void xmlParserGenericErrorFunc(void *  /*ctx*/, const char* msg, ...) { 
         hex_value['8'] = 8;               XML_Generic_error_info* p;
         hex_value['9'] = 9;          
         hex_value['A'] = 10;          if(!(p=xml_generic_error_info)) // occupy empty one
         hex_value['B'] = 11;                  p=xml_generic_error_info=new(PointerFreeGC) XML_Generic_error_info;
         hex_value['C'] = 12;                  
         hex_value['D'] = 13;          va_list args;
         hex_value['E'] = 14;          va_start(args, msg);
         hex_value['F'] = 15;          p->used+=vsnprintf(p->buf+p->used, sizeof(p->buf)-p->used, msg, args);
         hex_value['a'] = 10;          va_end(args);
         hex_value['b'] = 11;  
         hex_value['c'] = 12;  
         hex_value['d'] = 13;  
         hex_value['e'] = 14;  
         hex_value['f'] = 15;  
 }  
   
 void globals_init(Pool& pool) {  
         // hex value  
         setup_hex_value();  
   
         // names  
         content_type_name=new(pool) String(pool, CONTENT_TYPE_NAME);  
         body_name=new(pool) String(pool, BODY_NAME);  
   
         exception_method_name=new(pool) String(pool, EXCEPTION_METHOD_NAME);  
   
         unnamed_name=new(pool) String(pool, UNNAMED_NAME);  
         empty_string=new(pool) String(pool);   
   
         auto_method_name=new(pool) String(pool, AUTO_METHOD_NAME);  
         main_method_name=new(pool) String(pool, MAIN_METHOD_NAME);  
   
         root_class_name=new(pool) String(pool, ROOT_CLASS_NAME);  
         main_class_name=new(pool) String(pool, MAIN_CLASS_NAME);  
         table_class_name=new(pool) String(pool, TABLE_CLASS_NAME);  
         env_class_name=new(pool) String(pool, ENV_CLASS_NAME);    
         form_class_name=new(pool) String(pool, FORM_CLASS_NAME);          
         request_class_name=new(pool) String(pool, REQUEST_CLASS_NAME);    
         response_class_name=new(pool) String(pool, RESPONSE_CLASS_NAME);  
   
         result_var_name=new(pool) String(pool, RESULT_VAR_NAME);  
   
   
         limits_name=new(pool) String(pool, LIMITS_NAME);  
         post_max_size_name=new(pool) String(pool, POST_MAX_SIZE_NAME);  
   
         defaults_name=new(pool) String(pool, DEFAULTS_NAME);  
   
         // hashes  
         untaint_lang_name2enum=new(pool) Hash(pool);  
         String as_is(pool, "as-is");    
         untaint_lang_name2enum->put(as_is, (int)String::Untaint_lang::AS_IS);  
         String uri(pool, "uri");    
         untaint_lang_name2enum->put(uri, (int)String::Untaint_lang::URI);  
         String table(pool, "table");  
         untaint_lang_name2enum->put(table, (int)String::Untaint_lang::TABLE);  
         String sql(pool, "sql");  
         untaint_lang_name2enum->put(sql, (int)String::Untaint_lang::SQL);  
         String js(pool, "js");  
         untaint_lang_name2enum->put(js, (int)String::Untaint_lang::JS);  
         String html(pool, "html");  
         untaint_lang_name2enum->put(html, (int)String::Untaint_lang::HTML);  
         String html_typo(pool, "html-typo");  
         untaint_lang_name2enum->put(html_typo, (int)String::Untaint_lang::HTML_TYPO);  
   
         // read-only stateless classes  
         initialize_string_class(pool, *(string_class=new(pool) VStateless_class(pool)));  string_class->freeze();  
         initialize_double_class(pool, *(double_class=new(pool) VStateless_class(pool)));  double_class->freeze();  
         initialize_int_class(pool, *(int_class=new(pool) VStateless_class(pool)));  int_class->freeze();  
         initialize_table_class(pool, *(table_class=new(pool) VStateless_class(pool)));  table_class->freeze();  
   
         // read-only stateless base classes  
         initialize_env_base_class(pool, *(env_base_class=new(pool) VStateless_class(pool)));  env_base_class->set_name(*env_class_name);  env_base_class->freeze();  
         initialize_form_base_class(pool, *(form_base_class=new(pool) VStateless_class(pool)));  form_base_class->set_name(*form_class_name);  form_base_class->freeze();  
         initialize_request_base_class(pool, *(request_base_class=new(pool) VStateless_class(pool)));  request_base_class->set_name(*request_class_name);  request_base_class->freeze();  
         initialize_response_base_class(pool, *(response_base_class=new(pool) VStateless_class(pool)));  response_base_class->set_name(*response_class_name);  response_base_class->freeze();  
 }  }
   
   bool xmlHaveGenericErrors() {
           return xml_generic_error_info!=0;
   }
   
   const char* xmlGenericErrors() {
           if(XML_Generic_error_info *p=xml_generic_error_info) {
                   xml_generic_error_info=0;
                   return p->get();
           }
   
           return 0; // no errors for our thread_id registered
   }
   
   #endif // XML
   
   #ifdef XML
   
   static char *pa_GC_strdup(const char *s) {
           if(!s)
                   return 0;
   
           size_t size=strlen(s)+1;
           char *result=(char *)GC_MALLOC_ATOMIC(size);
   
           if(!result)
                   pa_fail_alloc("duplicate XML string",size);
   
           memcpy(result, s, size);
   #ifdef PA_DEBUG_XML_GC_MEMORY
           fprintf(stderr, "pa_GC_strdup(%p=%s, length=%d)=0x%p\n", s, s, size, result);
   #endif
           return result;
   }
   
   #ifdef PA_DEBUG_XML_GC_MEMORY
   
   static void* pa_gc_malloc_log(size_t size){
           void *p=GC_MALLOC(size);
           fprintf(stderr, "pa_gc_malloc_log(%d)=0x%p\n", size, p);
           return p;
           
   }
   
   static void* pa_gc_malloc_atomic_log(size_t size){
           void *p=GC_MALLOC_ATOMIC(size);
           fprintf(stderr, "pa_gc_malloc_atomic_log(%d)=0x%p\n", size, p);
           return p;
   }
   
   static void* pa_gc_realloc_log(void *ptr, size_t size){
           void *p=GC_REALLOC(ptr, size);
           fprintf(stderr, "pa_gc_realloc_log(0x%p, %d)=0x%p\n", ptr, size, p);
           return p;
   }
   
   static void pa_gc_free_log(void *p){
           fprintf(stderr, "pa_gc_free_log(0x%p)\n", p);
           GC_FREE(p);
   }
   
   #else
   
   inline void *check(void *result, const char *where, size_t size) {
           if(!result)
                   pa_fail_alloc(where, size);
           return result;
   }
   
   static void* pa_gc_malloc_nonull(size_t size) { 
           return check(GC_MALLOC(size), "allocate XML compsite memory", size);
   }
   
   static void* pa_gc_malloc_atomic_nonull(size_t size) { 
           return check(GC_MALLOC_ATOMIC(size), "allocate XML atomic memory", size);
   }
   
   static void* pa_gc_realloc_nonull(void* ptr, size_t size) { 
           return check(GC_REALLOC(ptr, size), "reallocate XML memory", size);
   }
   
   static void pa_gc_free_maybeignore(void* ptr) {
           GC_FREE(ptr);
   }
   
   #endif
   
   #endif // XML
   
   #ifdef HAVE_PCRE2
   pcre2_general_context* VRegex::fgen_ctxt;
   
   static void* pa_pcre_malloc(size_t size, void *){
           return pa_malloc(size);
   }
   
   static void pa_pcre_free(void *ptr, void *){
           pa_free(ptr);
   }
   #endif
   
   
   void pa_CORD_oom_fn(void) {
           pa_fail_alloc("expand string", 0);
   }
   
   #ifndef PA_DEBUG_DISABLE_GC
   extern "C" void *pa_fail_alloc(const char*);
   extern "C" void pa_GC_abort_func(const char *msg) {
           pa_fail_alloc(msg);
   }
   #endif
   
   /**
           @todo gc: libltdl: substitute lt_dlmalloc & co
   */
   static void gc_substitute_memory_management_functions() {
           // in libxml & libxslt
   #ifdef XML
           // asking to use GC memory
   #ifdef PA_DEBUG_XML_GC_MEMORY
           xmlGcMemSetup(
                   /*xmlFreeFunc */pa_gc_free_log,
                   /*xmlMallocFunc */pa_gc_malloc_log,
                   /*xmlMallocFunc */pa_gc_malloc_atomic_log,
                   /*xmlReallocFunc */pa_gc_realloc_log,
                   /*xmlStrdupFunc */pa_GC_strdup);
   #else
           xmlGcMemSetup(
                   /*xmlFreeFunc */pa_gc_free_maybeignore,
                   /*xmlMallocFunc */pa_gc_malloc_nonull,
                   /*xmlMallocFunc */pa_gc_malloc_atomic_nonull,
                   /*xmlReallocFunc */pa_gc_realloc_nonull,
                   /*xmlStrdupFunc */pa_GC_strdup);
   #endif
   
   #endif
   
           // pcre
   #ifdef HAVE_PCRE2
           VRegex::fgen_ctxt=pcre2_general_context_create(pa_pcre_malloc, pa_pcre_free, NULL);
   #else
           pcre_malloc=pa_malloc;
           pcre_free=pa_free;
   #endif
   
           // cord
           CORD_oom_fn=pa_CORD_oom_fn;
   }
   
   /**
           @test hint on one should call this for each thread xmlSubstituteEntitiesDefault(1);
   */
   void pa_globals_init() {
   
   #ifndef PA_DEBUG_DISABLE_GC
           // Dont collect unless explicitly requested. This is quicker (~30% ),
           // but less memory-efficient(~8%), so deciding for speed.
           GC_disable();
           // as we log allocation errors, we don't need default gc warnings (without timestamp and URI)
           GC_set_warn_proc(GC_ignore_warn_proc);
           // to prevent "mmap(PROT_NONE) failed + Aborted" under Linux
           GC_set_abort_func(pa_GC_abort_func);
   #endif
   
           // init socks
           pa_socks_init();
   
           // global variables
           cache_managers=new Cache_managers;
   
           // in various libraries
           gc_substitute_memory_management_functions();
   
   #ifdef SYMBOLS_CACHING
           // symbols cache
           Symbols::init();
   #endif
   
   #ifdef XML
           // initializing xml libs
   
           // Register the EXSLT extensions and the test module
           exsltRegisterAll();
           xsltRegisterTestModule();
           xmlDefaultSAXHandlerInit();
   
           // disable CDATA from being built in the document tree
           // never added yet  xmlDefaultSAXHandler.cdataBlock = NULL;
           
           // Initialization function for the XML parser. This is not reentrant. 
           // Call once before processing in case of use in multithreaded programs.
           xmlInitParser();
   
           // 1. this is needed for proper parsing of stylesheets
           // there were a situation where honest entity ruined innocent xpath compilation
           // doc says "you sould turn it on on stylesheet load" without deepening into details
           // 2. when dom tree with entites goes under transform text nodes 
           // got [erroreosly] cut on first entity occurance
           // --
           // that is why this is:
           xmlSubstituteEntitiesDefault(1);
           
           // Bit in the loadsubset context field to tell to do ID/REFs lookups 
           xmlLoadExtDtdDefaultValue |= XML_DETECT_IDS;
           // Bit in the loadsubset context field to tell to do complete the elements attributes lists 
           // with the ones defaulted from the DTDs 
           xmlLoadExtDtdDefaultValue |= XML_COMPLETE_ATTRS;
   
           // validate each document after load/create (?)
           // xmlDoValidityCheckingDefaultValue = 1;
   
           // regretfully this not only replaces entities on parse, but also on generate   xmlSubstituteEntitiesDefault(1);
           // never switched this on xmlIndentTreeOutput=1;
   
           xmlSetGenericErrorFunc(0, xmlParserGenericErrorFunc);
           xsltSetGenericErrorFunc(0, xmlParserGenericErrorFunc);
   
   //      FILE *f=fopen("xslt.log", "wt");
   //      xsltSetGenericDebugFunc(f/*stderr*/, 0);
   
           pa_xml_io_init();
   #endif
   
           // init *_class variables
           methoded_array();
   }
   
   static bool is_dlinited=false;
   
   void pa_globals_done() {
           delete cache_managers;
           cache_managers=0;
   
           if(is_dlinited)
                   lt_dlexit();
   
           pa_socks_done();
   }
   
   void pa_dlinit() {
           if(!is_dlinited){
                   if(lt_dlinit())
                           throw Exception(0,0,"preparation for dynamic library loading failed, %s", lt_dlerror());
                   is_dlinited=true;
           }
   }
   
   #ifdef _MSC_VER
   
   #define PREFIX "../../../../win32/"
   
   #ifdef _DEBUG
   #define CONFIGURATION "Debug"
   #else
   #define CONFIGURATION "Release"
   #endif
   
   #ifdef _WIN64
   #define PLATFORM_64 "x64/"
   #define PLATFORM_32 ""
   #else
   #define PLATFORM_64 ""
   #define PLATFORM_32 "win32/"
   #endif
   
   #pragma comment(lib, PREFIX "pcre/" PLATFORM_64 CONFIGURATION "/pcre.lib")
   
   #ifndef PA_DEBUG_DISABLE_GC
   
   #pragma comment(lib, PREFIX "gc/" PLATFORM_64 CONFIGURATION "/gc.lib")
   
   #endif // PA_DEBUG_DISABLE_GC
   
   
   #ifdef XML
   
   #define GNOME_LIBS PREFIX "gnome"
   
   #define LIB_XML PREFIX "gnome/libxml2-x.x.x/" PLATFORM_64 PLATFORM_32 CONFIGURATION "/lib/"
   #define LIB_XSLT PREFIX "gnome/libxslt-x.x.x/" PLATFORM_64 PLATFORM_32 CONFIGURATION "/lib/"
   
   #ifdef XML_STATIC
   #pragma comment(lib, LIB_XML "libxml2_a.lib")
   #pragma comment(lib, LIB_XSLT "libxslt_a.lib")
   #pragma comment(lib, LIB_XSLT "libexslt_a.lib")
   #else
   #pragma comment(lib, LIB_XML "libxml2.lib")
   #pragma comment(lib, LIB_XSLT "libxslt.lib")
   #pragma comment(lib, LIB_XSLT "libexslt.lib")
   #endif
   
   #endif // XML
   
   // defines for VS2015 to link with gc/xml libs compiled in the previous VS versions
   #if _MSC_VER >= 1900
   #pragma comment(lib,"legacy_stdio_definitions.lib")
   #endif
   
   #endif // _MSC_VER
Removed from v.1.12  
changed lines
  Added in v.1.218

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