|
|
| version 1.202, 2004/12/23 15:01:03 | version 1.209, 2005/11/18 10:17:39 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: commonly functions. | Parser: commonly functions. |
| Copyright(c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) | Copyright(c) 2001-2005 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) |
| */ | */ |
| Line 131 char* file_read_text(Request_charsets& c | Line 131 char* file_read_text(Request_charsets& c |
| return file.success?file.str:0; | return file.success?file.str:0; |
| } | } |
| /// these options were handled but not checked elsewhere, now check them | |
| static int get_valid_file_options_count(HashStringValue& options) | |
| { | |
| int result=0; | |
| if(options.get(PA_SQL_LIMIT_NAME)) | |
| result++; | |
| if(options.get(PA_SQL_OFFSET_NAME)) | |
| result++; | |
| if(options.get(PA_COLUMN_SEPARATOR_NAME)) | |
| result++; | |
| if(options.get(PA_COLUMN_ENCLOSER_NAME)) | |
| result++; | |
| return result; | |
| } | |
| //http request stuff | //http request stuff |
| #ifdef PA_HTTP | #ifdef PA_HTTP |
| Line 157 static bool set_addr(struct sockaddr_in | Line 172 static bool set_addr(struct sockaddr_in |
| return true; | return true; |
| } | } |
| static int http_read_response(char*& response, size_t& response_size, int sock, bool fail_on_status_ne_200){ | size_t guess_content_length(char* buf) { |
| response=(char*)pa_malloc_atomic(1/*terminator*/); // setting memory block type | char* ptr; |
| response[(response_size=0)]=0; | if((ptr=strstr(buf, "Content-Length:"))) // Apache |
| goto found; | |
| if((ptr=strstr(buf, "content-length:"))) // Parser 3 | |
| goto found; | |
| if((ptr=strstr(buf, "Content-length:"))) // maybe 1 | |
| goto found; | |
| if((ptr=strstr(buf, "CONTENT-LENGTH:"))) // maybe 2 | |
| goto found; | |
| return 0; | |
| found: | |
| char *error_pos; | |
| size_t result=(size_t)strtol(ptr+15/*strlen("CONTENT-LENGTH:")*/, &error_pos, 0); | |
| const size_t reasonable_initial_max=0x400*0x400*10 /*10M*/; | |
| if(result>reasonable_initial_max) // sanity check | |
| return reasonable_initial_max; | |
| return 0;//result; | |
| } | |
| static int http_read_response(char*& response, size_t& response_size, int sock, bool fail_on_status_ne_200) { | |
| int result=0; | int result=0; |
| char* EOLat=0; | // fetching some to local buffer, guessing on possible content-length |
| while(true) { | response_size=0x400*20; // initial size if content-length could not be determined |
| char buf[MAX_STRING*10]; | const size_t preview_size=0x400*20; |
| ssize_t received_size=recv(sock, buf, sizeof(buf), 0); | char preview_buf[preview_size+1/*terminator*/]; // 20K buffer to preview headers |
| if(received_size<=0) { | ssize_t received_size=recv(sock, preview_buf, preview_size, 0); |
| if(int no=pa_socks_errno()) | if(received_size==0) |
| throw Exception("http.timeout", | goto done; |
| 0, | if(received_size<0) { |
| "error receiving response: %s (%d)", pa_socks_strerr(no), no); | if(int no=pa_socks_errno()) |
| break; | throw Exception("http.timeout", |
| } | 0, |
| response=(char*)pa_realloc(response, response_size+received_size+1/*terminator*/); | "error receiving response header: %s (%d)", pa_socks_strerr(no), no); |
| memcpy(response+response_size, buf, received_size); | goto done; |
| response_size+=received_size; | } |
| response[response_size]=0; | // detecting response_size |
| { | |
| preview_buf[received_size]=0; // terminator | |
| if(size_t content_length=guess_content_length(preview_buf)) | |
| response_size=preview_size+content_length; // a little more than needed, will adjust response_size by actual received size later | |
| } | |
| if(!result && (EOLat=strstr(response, "\n"))) { // checking status in first response | // [gcc is happier this way, see goto above] |
| const String status_line(pa_strdup(response, EOLat-response)); | { |
| ArrayString astatus; | // allocating initial buf |
| size_t pos_after=0; | response=(char*)pa_malloc_atomic(response_size+1/*terminator*/); // just setting memory block type |
| status_line.split(astatus, pos_after, " "); | char* ptr=response; |
| const String& status_code=*astatus.get(astatus.count()>1?1:0); | size_t todo_size=response_size; |
| result=status_code.as_int(); | // coping part of already received body |
| memcpy(ptr, preview_buf, received_size); | |
| if(fail_on_status_ne_200 && result!=200) | ptr+=received_size; |
| throw Exception("http.status", | todo_size-=received_size; |
| &status_code, | |
| "invalid HTTP response status"); | // we use terminator byte for two purposes here: |
| // 1. we return there zero always, not knowing: maybe they would want to create String form $file.body? | |
| // invariant: all Strings should have zero-terminated buffers | |
| // 2. we use that out-of-size byte to detect if our content-length guess was wrong | |
| // when recv gets more than we expected | |
| // a) we know that the content-length guess was wrong | |
| // b) we have space to put the first byte of extra data | |
| // c) we use less code to detect normal situation: on last while-cycle recv expected to just return 0 | |
| while(true) { | |
| received_size=recv(sock, ptr, todo_size+1/*there is always a place for terminator*/, 0); | |
| if(received_size==0) { | |
| response_size-=todo_size; // in case we received less than expected, cut down the reported size | |
| break; | |
| } | |
| if(received_size<0) { | |
| if(int no=pa_socks_errno()) | |
| throw Exception("http.timeout", | |
| 0, | |
| "error receiving response body: %s (%d)", pa_socks_strerr(no), no); | |
| break; | |
| } | |
| // they've touched the terminator? | |
| if((size_t)received_size>todo_size) | |
| { | |
| // that means that our guessed response_size was not big enough | |
| const size_t grow_chunk_size=0x400*0x400; // 1M | |
| response_size+=grow_chunk_size; | |
| size_t ptr_offset=ptr-response; | |
| response=(char*)pa_realloc(response, response_size+1/*terminator*/); | |
| ptr=response+ptr_offset; | |
| todo_size+=grow_chunk_size; | |
| } | |
| // can't do this before realloc: we need <todo_size check | |
| ptr+=received_size; | |
| todo_size-=received_size; | |
| char* EOLat=0; | |
| if(!result && (EOLat=strstr(response, "\n"))) { // checking status in first response | |
| const String status_line(pa_strdup(response, EOLat-response)); | |
| ArrayString astatus; | |
| size_t pos_after=0; | |
| status_line.split(astatus, pos_after, " "); | |
| const String& status_code=*astatus.get(astatus.count()>1?1:0); | |
| result=status_code.as_int(); | |
| if(fail_on_status_ne_200 && result!=200) | |
| throw Exception("http.status", | |
| &status_code, | |
| "invalid HTTP response status"); | |
| } | |
| } | } |
| } | } |
| done: | |
| if(result) | if(result) |
| { | |
| response[response_size]=0; | |
| return result; | return result; |
| } | |
| else | else |
| throw Exception("http.response", | throw Exception("http.response", |
| 0, | 0, |
| Line 456 static File_read_http_result file_read_h | Line 548 static File_read_http_result file_read_h |
| const char* password_cstr=0; | const char* password_cstr=0; |
| if(options) { | if(options) { |
| int valid_options=0; | int valid_options=get_valid_file_options_count(*options); |
| if(Value* vmethod=options->get(HTTP_METHOD_NAME)) { | if(Value* vmethod=options->get(HTTP_METHOD_NAME)) { |
| valid_options++; | valid_options++; |
| method=vmethod->as_string().cstr(); | method=vmethod->as_string().cstr(); |
| Line 717 static void file_read_action( | Line 810 static void file_read_action( |
| "read failed: actually read %u bytes count not in [0..%u] valid range", | "read failed: actually read %u bytes count not in [0..%u] valid range", |
| *info.data_size, to_read_size); | *info.data_size, to_read_size); |
| } else { // empty file | } else { // empty file |
| if(as_text) { | // for both, text and binary: for text we need that terminator, for binary we need nonzero pointer to be able to save such files |
| *info.data=new(PointerFreeGC) char[1]; | *info.data=new(PointerFreeGC) char[1]; |
| *(char*)(*info.data)=0; | *(char*)(*info.data)=0; |
| } else | |
| *info.data=0; | |
| *info.data_size=0; | *info.data_size=0; |
| return; | return; |
| } | } |
| Line 733 File_read_result file_read(Request_chars | Line 824 File_read_result file_read(Request_chars |
| File_read_result result={false, 0, 0, 0}; | File_read_result result={false, 0, 0, 0}; |
| #ifdef PA_HTTP | #ifdef PA_HTTP |
| if(file_spec.starts_with("http://")) { | 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 | // fail on read problem |
| File_read_http_result http=file_read_http(charsets, file_spec, as_text, params); | File_read_http_result http=file_read_http(charsets, file_spec, as_text, params); |
| result.success=true; | result.success=true; |
| Line 741 File_read_result file_read(Request_chars | Line 837 File_read_result file_read(Request_chars |
| result.headers=http.headers; | result.headers=http.headers; |
| } else { | } else { |
| #endif | #endif |
| if(params && params->count()) | if(params) { |
| throw Exception("parser.runtime", | int valid_options=get_valid_file_options_count(*params); |
| 0, | if(valid_options!=params->count()) |
| "invalid option passed"); | throw Exception("parser.runtime", |
| 0, | |
| "invalid option passed"); | |
| } | |
| File_read_action_info info={&result.str, &result.length, | File_read_action_info info={&result.str, &result.length, |
| buf, offset, count}; | buf, offset, count}; |