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| version 1.239, 2009/01/12 07:15:45 | version 1.246, 2009/07/06 08:47:10 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: commonly functions. | Parser: commonly functions. |
| Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) | Copyright(c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| * BASE64 part | * BASE64 part |
| Line 36 static const char * const IDENT_COMMON_C | Line 36 static const char * const IDENT_COMMON_C |
| #include "pa_http.h" | #include "pa_http.h" |
| #include "pa_request_charsets.h" | #include "pa_request_charsets.h" |
| #include "pcre.h" | #include "pcre.h" |
| #include "pa_request.h" | |
| // some maybe-undefined constants | // some maybe-undefined constants |
| Line 102 char* file_read_text(Request_charsets& c | Line 103 char* file_read_text(Request_charsets& c |
| return file.success?file.str:0; | return file.success?file.str:0; |
| } | } |
| char* file_load_text(Request& r, | |
| const String& file_spec, | |
| bool fail_on_read_problem, | |
| HashStringValue* params, | |
| bool transcode_result) { | |
| File_read_result file= | |
| file_load(r, file_spec, true, params, fail_on_read_problem, 0, 0, 0, transcode_result); | |
| return file.success?file.str:0; | |
| } | |
| /// these options were handled but not checked elsewhere, now check them | /// these options were handled but not checked elsewhere, now check them |
| int pa_get_valid_file_options_count(HashStringValue& options) { | int pa_get_valid_file_options_count(HashStringValue& options) { |
| int result=0; | int result=0; |
| Line 155 static void file_read_action( | Line 166 static void file_read_action( |
| return; | return; |
| } | } |
| } | } |
| File_read_result file_read(Request_charsets& charsets, const String& file_spec, | File_read_result file_read(Request_charsets& charsets, const String& file_spec, |
| bool as_text, HashStringValue *params, | bool as_text, HashStringValue *params, |
| bool fail_on_read_problem, | bool fail_on_read_problem, |
| char* buf, size_t offset, size_t count, bool transcode_text_result) { | char* buf, size_t offset, size_t count, bool transcode_text_result) { |
| File_read_result result={false, 0, 0, 0}; | File_read_result result={false, 0, 0, 0}; |
| if(file_spec.starts_with("http://")) { | if(params){ |
| if(offset || count) | int valid_options=pa_get_valid_file_options_count(*params); |
| if(valid_options!=params->count()) | |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "offset and load options are not supported for HTTP:// file load"); | "invalid option passed"); |
| } | |
| // fail on read problem | File_read_action_info info={&result.str, &result.length, buf, offset, count}; |
| File_read_http_result http=pa_internal_file_read_http(charsets, file_spec, as_text, params, transcode_text_result); | |
| result.success=true; | |
| result.str=http.str; | |
| result.length=http.length; | |
| result.headers=http.headers; | |
| } else { | |
| if(params){ | |
| int valid_options=pa_get_valid_file_options_count(*params); | |
| if(valid_options!=params->count()) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "invalid option passed"); | |
| } | |
| File_read_action_info info={&result.str, &result.length, | result.success=file_read_action_under_lock(file_spec, |
| buf, offset, count}; | "read", file_read_action, &info, |
| result.success=file_read_action_under_lock(file_spec, | as_text, fail_on_read_problem); |
| "read", file_read_action, &info, | |
| as_text, fail_on_read_problem); | |
| if(as_text && result.success){ | if(as_text){ |
| if(result.success){ | |
| if(result.length>=3 && strncmp(result.str, "\xEF\xBB\xBF", 3)==0){ | if(result.length>=3 && strncmp(result.str, "\xEF\xBB\xBF", 3)==0){ |
| // skip UTF-8 signature: EF BB BF (BOM code) | // skip UTF-8 signature (BOM code) |
| result.str+=3; | result.str+=3; |
| result.length-=3; | result.length-=3; |
| } | } |
| if(result.length && transcode_text_result && params){ // must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below | if(result.length && transcode_text_result && params){ // must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below |
| if( Value* vcharset_name=params->get(PA_CHARSET_NAME) ){ | if(Value* vcharset_name=params->get(PA_CHARSET_NAME)){ |
| Charset asked_charset=::charsets.get(vcharset_name->as_string(). | Charset asked_charset=::charsets.get(vcharset_name->as_string(). |
| change_case(charsets.source(), String::CC_UPPER)); | change_case(charsets.source(), String::CC_UPPER)); |
| Line 207 File_read_result file_read(Request_chars | Line 207 File_read_result file_read(Request_chars |
| } | } |
| } | } |
| } | } |
| if(result.length) | |
| fix_line_breaks(result.str, result.length); | |
| } | } |
| if(as_text && result.length) | return result; |
| fix_line_breaks(result.str, result.length); | } |
| File_read_result file_load(Request& r, const String& file_spec, | |
| bool as_text, HashStringValue *params, | |
| bool fail_on_read_problem, | |
| char* buf, size_t offset, size_t count, bool transcode_text_result) { | |
| File_read_result result={false, 0, 0, 0}; | |
| if(file_spec.starts_with("http://")) { | |
| if(offset || count) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "offset and load options are not supported for HTTP:// file load"); | |
| // fail on read problem | |
| File_read_http_result http=pa_internal_file_read_http(r, file_spec, as_text, params, transcode_text_result); | |
| result.success=true; | |
| result.str=http.str; | |
| result.length=http.length; | |
| result.headers=http.headers; | |
| } else | |
| result= | |
| file_read(r.charsets, file_spec, as_text, params, fail_on_read_problem, buf, offset, count, transcode_text_result); | |
| return result; | return result; |
| } | } |
| Line 236 bool file_read_action_under_lock(const S | Line 260 bool file_read_action_under_lock(const S |
| const char* action_name, File_read_action action, void *context, | const char* action_name, File_read_action action, void *context, |
| bool as_text, | bool as_text, |
| bool fail_on_read_problem) { | bool fail_on_read_problem) { |
| const char* fname=file_spec.cstr(String::L_FILE_SPEC); | const char* fname=file_spec.cstr_taint(String::L_FILE_SPEC); |
| int f; | int f; |
| // first open, next stat: | // first open, next stat: |
| Line 291 void create_dir_for_file(const String& f | Line 315 void create_dir_for_file(const String& f |
| size_t pos_after=1; | size_t pos_after=1; |
| size_t pos_before; | size_t pos_before; |
| while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) { | while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) { |
| mkdir(file_spec.mid(0, pos_before).cstr(String::L_FILE_SPEC), 0775); | mkdir(file_spec.mid(0, pos_before).cstr_taint(String::L_FILE_SPEC), 0775); |
| pos_after=pos_before+1; | pos_after=pos_before+1; |
| } | } |
| } | } |
| Line 305 bool file_write_action_under_lock( | Line 329 bool file_write_action_under_lock( |
| bool do_append, | bool do_append, |
| bool do_block, | bool do_block, |
| bool fail_on_lock_problem) { | bool fail_on_lock_problem) { |
| const char* fname=file_spec.cstr(String::L_FILE_SPEC); | const char* fname=file_spec.cstr_taint(String::L_FILE_SPEC); |
| int f; | int f; |
| if(access(fname, W_OK)!=0) // no | if(access(fname, W_OK)!=0) // no |
| create_dir_for_file(file_spec); | create_dir_for_file(file_spec); |
| Line 387 static void rmdir(const String& file_spe | Line 411 static void rmdir(const String& file_spe |
| if((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) | if((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) |
| rmdir(file_spec, pos_before+1); | rmdir(file_spec, pos_before+1); |
| rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::L_FILE_SPEC)); | rmdir(file_spec.mid(0, pos_after-1/* / */).cstr_taint(String::L_FILE_SPEC)); |
| } | } |
| bool file_delete(const String& file_spec, bool fail_on_problem) { | bool file_delete(const String& file_spec, bool fail_on_problem) { |
| const char* fname=file_spec.cstr(String::L_FILE_SPEC); | const char* fname=file_spec.cstr_taint(String::L_FILE_SPEC); |
| if(unlink(fname)!=0) | if(unlink(fname)!=0) |
| if(fail_on_problem) | if(fail_on_problem) |
| throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, | throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, |
| Line 406 bool file_delete(const String& file_spec | Line 430 bool file_delete(const String& file_spec |
| } | } |
| void file_move(const String& old_spec, const String& new_spec) { | void file_move(const String& old_spec, const String& new_spec) { |
| const char* old_spec_cstr=old_spec.cstr(String::L_FILE_SPEC); | const char* old_spec_cstr=old_spec.cstr_taint(String::L_FILE_SPEC); |
| const char* new_spec_cstr=new_spec.cstr(String::L_FILE_SPEC); | const char* new_spec_cstr=new_spec.cstr_taint(String::L_FILE_SPEC); |
| create_dir_for_file(new_spec); | create_dir_for_file(new_spec); |
| Line 430 bool entry_exists(const char* fname, str | Line 454 bool entry_exists(const char* fname, str |
| } | } |
| bool entry_exists(const String& file_spec) { | bool entry_exists(const String& file_spec) { |
| const char* fname=file_spec.cstr(String::L_FILE_SPEC); | const char* fname=file_spec.cstr_taint(String::L_FILE_SPEC); |
| return entry_exists(fname, 0); | return entry_exists(fname, 0); |
| } | } |
| static bool entry_readable(const String& file_spec, bool need_dir) { | static bool entry_readable(const String& file_spec, bool need_dir) { |
| char* fname=file_spec.cstrm(String::L_FILE_SPEC); | char* fname=file_spec.cstrm_taint(String::L_FILE_SPEC); |
| if(need_dir) { | if(need_dir) { |
| size_t size=strlen(fname); | size_t size=strlen(fname); |
| while(size) { | while(size) { |
| Line 470 const String* file_exist(const String& p | Line 494 const String* file_exist(const String& p |
| } | } |
| bool file_executable(const String& file_spec) { | bool file_executable(const String& file_spec) { |
| return access(file_spec.cstr(String::L_FILE_SPEC), X_OK)==0; | return access(file_spec.cstr_taint(String::L_FILE_SPEC), X_OK)==0; |
| } | } |
| bool file_stat(const String& file_spec, | bool file_stat(const String& file_spec, |
| Line 479 bool file_stat(const String& file_spec, | Line 503 bool file_stat(const String& file_spec, |
| time_t& rmtime, | time_t& rmtime, |
| time_t& rctime, | time_t& rctime, |
| bool fail_on_read_problem) { | bool fail_on_read_problem) { |
| const char* fname=file_spec.cstr(String::L_FILE_SPEC); | const char* fname=file_spec.cstr_taint(String::L_FILE_SPEC); |
| struct stat finfo; | struct stat finfo; |
| if(stat(fname, &finfo)!=0) | if(stat(fname, &finfo)!=0) |
| if(fail_on_read_problem) | if(fail_on_read_problem) |
| Line 770 size_t strpos(const char *str, const cha | Line 794 size_t strpos(const char *str, const cha |
| // content-type: xxx; charset=WE-NEED-THIS | // content-type: xxx; charset=WE-NEED-THIS |
| // content-type: xxx; charset="WE-NEED-THIS" | // content-type: xxx; charset="WE-NEED-THIS" |
| // content-type: xxx; charset="WE-NEED-THIS"; | // content-type: xxx; charset="WE-NEED-THIS"; |
| Charset* detect_charset(const char* content_type){ | Charset* detect_charset(const char* content_type, bool already_uppercased){ |
| if(content_type){ | if(content_type){ |
| size_t len=strlen(content_type); | char* CONTENT_TYPE=pa_strdup(content_type); |
| char* CONTENT_TYPE=new(PointerFreeGC) char[len+1]; | if(!already_uppercased) |
| memcpy(CONTENT_TYPE, content_type, len); | for(char *p=CONTENT_TYPE; *p; p++) |
| for(char *p=CONTENT_TYPE; *p; p++) | *p=(char)toupper((unsigned char)*p); |
| *p=(char)toupper((unsigned char)*p); | |
| if(const char* begin=strstr(CONTENT_TYPE, "CHARSET=")){ | if(const char* begin=strstr(CONTENT_TYPE, "CHARSET=")){ |
| begin+=8; // skip "CHARSET=" | begin+=8; // skip "CHARSET=" |
| Line 789 Charset* detect_charset(const char* cont | Line 812 Charset* detect_charset(const char* cont |
| if(!end) | if(!end) |
| end=(char*)strchr(begin, ';'); | end=(char*)strchr(begin, ';'); |
| size_t len; | if(end) |
| if(end){ | |
| *end=0; // terminator | *end=0; // terminator |
| len=end-begin; | |
| } else { | |
| len=strlen(begin); | |
| } | |
| String::Body NAME=String::Body(begin, len); | return *begin?&charsets.get(begin):0; |
| return &charsets.get(NAME); | |
| } | } |
| } | } |
| return 0; | return 0; |
| } | } |
| Charset* detect_charset(Charset& source_charset, const String& content_type){ | |
| const String& CONTENT_TYPE=content_type.change_case(source_charset, String::CC_UPPER); | |
| size_t begin=CONTENT_TYPE.pos("CHARSET="); | |
| if(begin!=STRING_NOT_FOUND) { | |
| begin+=8; // skip "CHARSET=" | |
| size_t end=STRING_NOT_FOUND; | |
| if(CONTENT_TYPE.pos('"', begin)==begin){ | |
| begin++; | |
| end=CONTENT_TYPE.pos('"', begin); | |
| } else if(CONTENT_TYPE.pos('\'', begin)==begin){ | |
| begin++; | |
| end=CONTENT_TYPE.pos('\'', begin); | |
| } | |
| if(end==STRING_NOT_FOUND) | |
| end=CONTENT_TYPE.pos(';', begin); | |
| if(end==STRING_NOT_FOUND) | |
| end=CONTENT_TYPE.length(); | |
| const String::Body NAME=CONTENT_TYPE.mid(begin, end); | |
| return &charsets.get(NAME); | |
| } | |
| return 0; | |
| } | |
| static bool isLeap(int year) { | static bool isLeap(int year) { |
| return !( | return !( |
| Line 933 int __vsnprintf(char* b, size_t s, const | Line 923 int __vsnprintf(char* b, size_t s, const |
| int __snprintf(char* b, size_t s, const char* f, ...) { | int __snprintf(char* b, size_t s, const char* f, ...) { |
| va_list l; | va_list l; |
| va_start(l, f); | va_start(l, f); |
| int r=__vsnprintf(b, s, f, l); | int r=__vsnprintf(b, s, f, l); |
| va_end(l); | va_end(l); |
| return r; | return r; |
| } | } |
| Line 1258 int file_block_read(const int f, unsigne | Line 1248 int file_block_read(const int f, unsigne |
| const unsigned long pa_crc32(const char *in, size_t in_size){ | const unsigned long pa_crc32(const char *in, size_t in_size){ |
| unsigned long crc32=0xFFFFFFFF; | unsigned long crc32=0xFFFFFFFF; |
| InitCrc32Table(); | InitCrc32Table(); |
| for(size_t i = 0; i<in_size; i++) | for(size_t i = 0; i<in_size; i++) |
| CalcCrc32(in[i], crc32); | CalcCrc32(in[i], crc32); |
| Line 1288 static void file_crc32_file_action( | Line 1278 static void file_crc32_file_action( |
| } | } |
| } | } |
| char* print_pcre_exec_error_text(int exec_result){ | |
| switch(exec_result){ | |
| case PCRE_ERROR_BADUTF8: | |
| return "validation of UTF-8 string failed while pcre_exec (%d)."; | |
| break; | |
| default: | |
| return "regular expression execute error (%d)"; | |
| } | |
| } | |