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| version 1.72, 2016/07/26 13:20:23 | version 1.97, 2020/10/14 21:35:00 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: http support functions. | Parser: http support functions. |
| Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com) | Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| #include "pa_http.h" | #include "pa_http.h" |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_base64.h" | |
| #include "pa_charsets.h" | #include "pa_charsets.h" |
| #include "pa_request_charsets.h" | #include "pa_request_charsets.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| Line 17 volatile const char * IDENT_PA_HTTP_C="$ | Line 18 volatile const char * IDENT_PA_HTTP_C="$ |
| #ifdef _MSC_VER | #ifdef _MSC_VER |
| #include <windows.h> | #include <windows.h> |
| #define socklen_t int | |
| #else | #else |
| #define closesocket close | #define closesocket close |
| #endif | #endif |
| Line 47 volatile const char * IDENT_PA_HTTP_C="$ | Line 49 volatile const char * IDENT_PA_HTTP_C="$ |
| // helpers | // helpers |
| bool HTTP_Headers::add_header(const char *line){ | |
| const char *value=strchr(line, ':'); | |
| if(value && value != line){ // we need only headers, not the response code | |
| Header header(str_upper(line, value-line), String::Body(value+1).trim(String::TRIM_BOTH, " \t\n\r")); | |
| if(header.name == String::Body(HTTP_CONTENT_TYPE_UPPER) && content_type.is_empty()) | |
| content_type=header.value; | |
| if(header.name == String::Body("CONTENT-LENGTH") && content_length==0) | |
| ALTER_EXCEPTION_COMMENT(content_length=pa_atoul(header.value.cstr()), " for content-length"); | |
| headers+=header; | |
| return true; | |
| } | |
| return false; | |
| } | |
| class Cookies_table_template_columns: public ArrayString { | class Cookies_table_template_columns: public ArrayString { |
| public: | public: |
| Cookies_table_template_columns() { | Cookies_table_template_columns() { |
| Line 76 static bool set_addr(struct sockaddr_in | Line 97 static bool set_addr(struct sockaddr_in |
| return false; | return false; |
| } | } |
| size_t guess_content_length(char* buf) { | class HTTP_response : public PA_Allocated { |
| char* ptr; | public: |
| if((ptr=strstr(buf, "Content-Length:"))) // Apache | char *buf; |
| goto found; | size_t length; |
| if((ptr=strstr(buf, "content-length:"))) // Parser 3 before 3.4.0 | size_t buf_size; |
| goto found; | size_t body_offset; |
| if((ptr=strstr(buf, "Content-length:"))) // maybe 1 | |
| goto found; | HTTP_Headers headers; |
| if((ptr=strstr(buf, "CONTENT-LENGTH:"))) // maybe 2 | |
| goto found; | HTTP_response() : buf(NULL), length(0), buf_size(0), body_offset(0){} |
| return 0; | |
| found: | void resize(size_t size){ |
| char *error_pos; | buf_size=size; |
| size_t result=(size_t)strtol(ptr+15/*strlen("Content-Length:")*/, &error_pos, 0); | buf=(char *)pa_realloc(buf, size + 1); |
| } | |
| const size_t reasonable_initial_max=0x400*0x400*10 /*10M*/; | |
| if(result>reasonable_initial_max) // sanity check | bool read(int sock, size_t size){ |
| return reasonable_initial_max; | if(length+size>buf_size) |
| return 0;//result; | resize(buf_size*2 + size); |
| } | ssize_t received_size=recv(sock, buf + length, size, 0); |
| if(received_size==0) | |
| return false; | |
| 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); | |
| return false; | |
| } | |
| length+=received_size; | |
| buf[length]='\0'; | |
| return true; | |
| } | |
| static int http_read_response(char*& response, size_t& response_size, int sock, bool fail_on_status_ne_200) { | size_t first_line(){ |
| int result=0; | char *header=strchr(buf, '\n'); |
| // fetching some to local buffer, guessing on possible Content-Length | if(!header) |
| response_size=0x400*20; // initial size if Content-Length could not be determined | return false; |
| const size_t preview_size=0x400*20; | |
| char preview_buf[preview_size+1/*terminator*/]; // 20K buffer to preview headers | return header-buf; |
| ssize_t received_size=recv(sock, preview_buf, preview_size, 0); | |
| if(received_size==0) | |
| goto done; | |
| if(received_size<0) { | |
| if(int no=pa_socks_errno()) | |
| throw Exception("http.timeout", | |
| 0, | |
| "error receiving response header: %s (%d)", pa_socks_strerr(no), no); | |
| goto done; | |
| } | |
| // terminator [helps futher string searches] | |
| preview_buf[received_size]=0; | |
| // checking status | |
| if(char* EOLat=strstr(preview_buf, "\n")) { | |
| const String status_line(pa_strdup(preview_buf, EOLat-preview_buf)); | |
| 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"); | |
| } | } |
| // detecting response_size | |
| { | const char *status_code(char *status_line, int &result){ |
| if(size_t content_length=guess_content_length(preview_buf)) | char* status_start = strchr(status_line, ' '); |
| response_size=preview_size+content_length; // a little more than needed, will adjust response_size by actual received size later | |
| if(!(status_start++)) | |
| return status_line; | |
| char* status_end=strchr(status_start, ' '); | |
| if(!status_end) | |
| return status_line; | |
| if(status_end==status_start) | |
| return status_line; | |
| const char *result_str=pa_strdup(status_start, status_end-status_start); | |
| ALTER_EXCEPTION_COMMENT(result=pa_atoui(result_str), " for HTTP status"); | |
| return result_str; | |
| } | } |
| // [gcc is happier this way, see goto above] | bool body_start(){ |
| { | char *p=buf; |
| // allocating initial buf | while((p=strchr(p, '\n'))) { |
| response=(char*)pa_malloc_atomic(response_size+1/*terminator*/); // just setting memory block type | if(p[1]=='\r' && p[2]=='\n'){ // \r\n\r\n |
| char* ptr=response; | *p='\0'; |
| size_t todo_size=response_size; | body_offset=p-buf+3; |
| // coping part of already received body | return true; |
| memcpy(ptr, preview_buf, received_size); | } |
| ptr+=received_size; | if(p[1]=='\n') { // \n\n |
| todo_size-=received_size; | *p='\0'; |
| body_offset=p-buf+2; | |
| // we use terminator byte for two purposes here: | return true; |
| // 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 | p++; |
| // 2. we use that out-of-size byte to detect if our Content-Length guess was wrong | } |
| // when recv gets more than we expected | return false; |
| // 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 | void parse_headers(){ |
| while(true) { | const String header_block(buf, String::L_TAINTED); |
| received_size=recv(sock, ptr, todo_size+1/*there is always a place for terminator*/, 0); | |
| if(received_size==0) { | ArrayString aheaders; |
| response_size-=todo_size; // in case we received less than expected, cut down the reported size | header_block.split(aheaders, 0, "\n"); |
| Array_iterator<const String*> i(aheaders); | |
| i.next(); // skipping status | |
| for(;i.has_next();){ | |
| const char *line=i.next()->cstr(); | |
| if(!headers.add_header(line)) | |
| throw Exception("http.response", 0, "bad response from host - bad header \"%s\"", line); | |
| } | |
| } | |
| int read_response(int sock, bool fail_on_status_ne_200); | |
| }; | |
| enum HTTP_response_state { | |
| HTTP_STATUS_CODE, | |
| HTTP_HEADERS, | |
| HTTP_BODY | |
| }; | |
| int HTTP_response::read_response(int sock, bool fail_on_status_ne_200) { | |
| HTTP_response_state state=HTTP_STATUS_CODE; | |
| int result=0; | |
| size_t chunk_size=0x400*16; | |
| resize(2*chunk_size); | |
| while(read(sock, chunk_size)){ | |
| switch(state){ | |
| case HTTP_STATUS_CODE: { | |
| size_t status_size=first_line(); | |
| if(!status_size) | |
| break; | |
| const char *status=status_code(pa_strdup(buf, status_size), result); | |
| if(!result || fail_on_status_ne_200 && result!=200) | |
| throw Exception("http.status", status ? new String(status) : &String::Empty, "invalid HTTP response status"); | |
| state=HTTP_HEADERS; | |
| } | |
| case HTTP_HEADERS: { | |
| if(!body_start()) | |
| break; | |
| parse_headers(); | |
| size_t content_length=check_file_size(headers.content_length, 0); | |
| if(content_length>0 && (content_length + body_offset) > length){ | |
| resize(content_length + body_offset + 0x400*64); | |
| } | |
| state=HTTP_BODY; | |
| break; | break; |
| } | } |
| if(received_size<0) { | |
| if(int no=pa_socks_errno()) | case HTTP_BODY: { |
| throw Exception("http.timeout", | chunk_size=0x400*64; |
| 0, | |
| "error receiving response body: %s (%d)", pa_socks_strerr(no), no); | |
| break; | 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; | |
| } | } |
| } | } |
| done: | |
| if(result) | if(state==HTTP_STATUS_CODE) |
| { | throw Exception("http.response", 0, "bad response from host - no status found (size=%u)", length); |
| response[response_size]=0; | |
| return result; | if(state==HTTP_HEADERS){ |
| parse_headers(); | |
| body_offset=length; | |
| } | } |
| else | |
| throw Exception("http.response", | return result; |
| 0, | |
| "bad response from host - no status found (size=%u)", response_size); | |
| } | } |
| /* ********************** request *************************** */ | /* ********************** request *************************** */ |
| Line 208 static void timeout_handler(int /*sig*/) | Line 266 static void timeout_handler(int /*sig*/) |
| } | } |
| #endif | #endif |
| static int http_request(char*& response, size_t& response_size, | static int http_request(HTTP_response& response, const char* host, short port, const char* request, size_t request_size, int timeout_secs, bool fail_on_status_ne_200) { |
| const char* host, short port, | |
| const char* request, size_t request_size, | |
| int timeout_secs, | |
| bool fail_on_status_ne_200) { | |
| if(!host) | if(!host) |
| throw Exception("http.host", | throw Exception("http.host", 0, "zero hostname"); //never |
| 0, | |
| "zero hostname"); //never | |
| volatile // to prevent makeing it register variable, because it will be clobbered by longjmp [thanks gcc warning] | volatile // to prevent makeing it register variable, because it will be clobbered by longjmp [thanks gcc warning] |
| int sock=-1; | int sock=-1; |
| Line 230 static int http_request(char*& response, | Line 282 static int http_request(char*& response, |
| // rewritten simplier [athough duplicating closesocket code] | // rewritten simplier [athough duplicating closesocket code] |
| if(sock>=0) | if(sock>=0) |
| closesocket(sock); | closesocket(sock); |
| throw Exception("http.timeout", | throw Exception("http.timeout", 0, "timeout occurred while retrieving document"); |
| 0, | |
| "timeout occured while retrieving document"); | |
| return 0; // never | return 0; // never |
| } else { | } else { |
| alarm(timeout_secs); | alarm(timeout_secs); |
| Line 242 static int http_request(char*& response, | Line 292 static int http_request(char*& response, |
| struct sockaddr_in dest; | struct sockaddr_in dest; |
| if(!set_addr(&dest, host, port)) | if(!set_addr(&dest, host, port)) |
| throw Exception("http.host", | throw Exception("http.host", 0, "can not resolve hostname \"%s\"", host); |
| 0, | |
| "can not resolve hostname \"%s\"", host); | |
| if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0) { | if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0) { |
| int no=pa_socks_errno(); | int no=pa_socks_errno(); |
| throw Exception("http.connect", | throw Exception("http.connect", 0, "can not make socket: %s (%d)", pa_socks_strerr(no), no); |
| 0, | |
| "can not make socket: %s (%d)", pa_socks_strerr(no), no); | |
| } | } |
| // To enable SO_DONTLINGER (that is, disable SO_LINGER) | // To enable SO_DONTLINGER (that is, disable SO_LINGER) |
| Line 269 static int http_request(char*& response, | Line 315 static int http_request(char*& response, |
| if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) { | if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) { |
| int no=pa_socks_errno(); | int no=pa_socks_errno(); |
| throw Exception("http.connect", | throw Exception("http.connect", 0, "can not connect to host \"%s\": %s (%d)", host, pa_socks_strerr(no), no); |
| 0, | |
| "can not connect to host \"%s\": %s (%d)", host, pa_socks_strerr(no), no); | |
| } | } |
| if(send(sock, request, request_size, 0)!=(ssize_t)request_size) { | if(send(sock, request, request_size, 0)!=(ssize_t)request_size) { |
| int no=pa_socks_errno(); | int no=pa_socks_errno(); |
| throw Exception("http.timeout", | throw Exception("http.timeout", 0, "error sending request: %s (%d)", pa_socks_strerr(no), no); |
| 0, | |
| "error sending request: %s (%d)", pa_socks_strerr(no), no); | |
| } | } |
| result=http_read_response(response, response_size, sock, fail_on_status_ne_200); | result=response.read_response(sock, fail_on_status_ne_200); |
| closesocket(sock); | closesocket(sock); |
| #ifdef PA_USE_ALARM | #ifdef PA_USE_ALARM |
| alarm(0); | alarm(0); |
| #endif | #endif |
| return result; | return result; |
| } catch(...) { | } catch(...) { |
| #ifdef PA_USE_ALARM | #ifdef PA_USE_ALARM |
| alarm(0); | alarm(0); |
| #endif | #endif |
| if(sock>=0) | if(sock>=0) |
| closesocket(sock); | closesocket(sock); |
| rethrow; | rethrow; |
| } | } |
| #ifdef PA_USE_ALARM | #ifdef PA_USE_ALARM |
| Line 366 static const String* basic_authorization | Line 408 static const String* basic_authorization |
| combined<<pass; | combined<<pass; |
| String* result=new String("Basic "); | String* result=new String("Basic "); |
| *result<<pa_base64_encode(combined.cstr(), combined.length()); | *result<<pa_base64_encode(combined.cstr(), combined.length(), Base64Options(false /*no wrap*/)); |
| return result; | return result; |
| } | } |
| static void form_string_value2string( | static void form_string_value2string(HashStringValue::key_type key, const String& value, String& result) { |
| HashStringValue::key_type key, | |
| const String& value, | |
| String& result) | |
| { | |
| result << String(key, String::L_URI) << "=" << String(value, String::L_URI) << "&"; | result << String(key, String::L_URI) << "=" << String(value, String::L_URI) << "&"; |
| } | } |
| Line 390 struct Form_table_value2string_info { | Line 428 struct Form_table_value2string_info { |
| static void form_table_value2string(Table::element_type row, Form_table_value2string_info* info) { | static void form_table_value2string(Table::element_type row, Form_table_value2string_info* info) { |
| form_string_value2string(info->key, *row->get(0), info->result); | form_string_value2string(info->key, *row->get(0), info->result); |
| } | } |
| static void form_value2string( | |
| HashStringValue::key_type key, | static void form_value2string(HashStringValue::key_type key, HashStringValue::value_type value, String* result) { |
| HashStringValue::value_type value, | |
| String* result) | |
| { | |
| if(const String* svalue=value->get_string()) | if(const String* svalue=value->get_string()) |
| form_string_value2string(key, *svalue, *result); | form_string_value2string(key, *svalue, *result); |
| else if(Table* tvalue=value->get_table()) { | else if(Table* tvalue=value->get_table()) { |
| Form_table_value2string_info info(key, *result); | Form_table_value2string_info info(key, *result); |
| tvalue->for_each(form_table_value2string, &info); | tvalue->for_each(form_table_value2string, &info); |
| } else | } else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, new String(key, String::L_TAINTED), |
| new String(key, String::L_TAINTED), | |
| "is %s, " HTTP_FORM_NAME " option value can be string or table only (file is allowed for $." HTTP_METHOD_NAME "[POST] + $." HTTP_FORM_ENCTYPE_NAME "[" HTTP_CONTENT_TYPE_MULTIPART_FORMDATA "])", value->type()); | "is %s, " HTTP_FORM_NAME " option value can be string or table only (file is allowed for $." HTTP_METHOD_NAME "[POST] + $." HTTP_FORM_ENCTYPE_NAME "[" HTTP_CONTENT_TYPE_MULTIPART_FORMDATA "])", value->type()); |
| } | } |
| Line 455 struct FormPart { | Line 489 struct FormPart { |
| } | } |
| }; | }; |
| static void form_part_boundary_header(FormPart& part, String::Body name, const char* file_name=0){ | static void form_part_boundary_header(FormPart& part, String::Body name, const char* file_name=0) { |
| *part.string << "--" << part.boundary | *part.string << "--" << part.boundary << CRLF CONTENT_DISPOSITION_CAPITALIZED ": form-data; name=\"" << name << "\""; |
| << CRLF CONTENT_DISPOSITION_CAPITALIZED ": form-data; name=\"" | |
| << name | |
| << "\""; | |
| if(file_name){ | if(file_name){ |
| if(strcmp(file_name, NONAME_DAT)!=0) | if(strcmp(file_name, NONAME_DAT)!=0) |
| *part.string << "; filename=\"" << file_name << "\""; | *part.string << "; filename=\"" << file_name << "\""; |
| Line 468 static void form_part_boundary_header(Fo | Line 499 static void form_part_boundary_header(Fo |
| *part.string << CRLF CRLF; | *part.string << CRLF CRLF; |
| } | } |
| static void form_string_value2part( | static void form_string_value2part(HashStringValue::key_type key, const String& value, FormPart& part) { |
| HashStringValue::key_type key, | |
| const String& value, | |
| FormPart& part) | |
| { | |
| form_part_boundary_header(part, key); | form_part_boundary_header(part, key); |
| *part.string << value << CRLF; | *part.string << value << CRLF; |
| } | } |
| static void form_file_value2part( | static void form_file_value2part(HashStringValue::key_type key, VFile& vfile, FormPart& part) { |
| HashStringValue::key_type key, | |
| VFile& vfile, | |
| FormPart& part) | |
| { | |
| form_part_boundary_header(part, key, vfile.fields().get(name_name)->as_string().cstr()); | form_part_boundary_header(part, key, vfile.fields().get(name_name)->as_string().cstr()); |
| part.blocks+=FormPart::BinaryBlock(part.string, part.r); | part.blocks+=FormPart::BinaryBlock(part.string, part.r); |
| part.blocks+=FormPart::BinaryBlock(vfile.value_ptr(), vfile.value_size()); | part.blocks+=FormPart::BinaryBlock(vfile.value_ptr(), vfile.value_size()); |
| Line 493 static void form_table_value2part(Table: | Line 516 static void form_table_value2part(Table: |
| form_string_value2part(part->info->key, *row->get(0), *part); | form_string_value2part(part->info->key, *row->get(0), *part); |
| } | } |
| static void form_value2part( | static void form_value2part(HashStringValue::key_type key, HashStringValue::value_type value, FormPart& part) { |
| HashStringValue::key_type key, | |
| HashStringValue::value_type value, | |
| FormPart& part) | |
| { | |
| if(const String* svalue=value->get_string()) | if(const String* svalue=value->get_string()) |
| form_string_value2part(key, *svalue, part); | form_string_value2part(key, *svalue, part); |
| else if(Table* tvalue=value->get_table()) { | else if(Table* tvalue=value->get_table()) { |
| Line 507 static void form_value2part( | Line 526 static void form_value2part( |
| } else if(VFile* vfile=static_cast<VFile *>(value->as("file"))){ | } else if(VFile* vfile=static_cast<VFile *>(value->as("file"))){ |
| form_file_value2part(key, *vfile, part); | form_file_value2part(key, *vfile, part); |
| } else | } else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, new String(key, String::L_TAINTED), "is %s, " HTTP_FORM_NAME " option value can be string, table or file only", value->type()); |
| new String(key, String::L_TAINTED), | |
| "is %s, " HTTP_FORM_NAME " option value can be string, table or file only", value->type()); | |
| } | } |
| const char* pa_form2string_multipart(HashStringValue& form, Request& r, const char* boundary, size_t& post_size){ | const char* pa_form2string_multipart(HashStringValue& form, Request& r, const char* boundary, size_t& post_size){ |
| Line 520 const char* pa_form2string_multipart(Has | Line 537 const char* pa_form2string_multipart(Has |
| return formpart.post(post_size); | return formpart.post(post_size); |
| } | } |
| static void find_headers_end(char* p, | |
| char*& headers_end_at, | |
| char*& raw_body) | |
| { | |
| raw_body=p; | |
| // \n\n | |
| // \r\n\r\n | |
| while((p=strchr(p, '\n'))) { | |
| headers_end_at=++p; // \n>.< | |
| if(*p=='\r') // \r\n>\r?<\n | |
| p++; | |
| if(*p=='\n') { // \r\n\r>\n?< | |
| raw_body=p+1; | |
| return; | |
| } | |
| } | |
| headers_end_at=0; | |
| } | |
| // Set-Cookie: name=value; Domain=docs.foo.com; Path=/accounts; Expires=Wed, 13-Jan-2021 22:23:01 GMT; Secure; HttpOnly | // Set-Cookie: name=value; Domain=docs.foo.com; Path=/accounts; Expires=Wed, 13-Jan-2021 22:23:01 GMT; Secure; HttpOnly |
| static ArrayString* parse_cookie(Request& r, const String& cookie) { | static ArrayString* parse_cookie(Request& r, const String& cookie) { |
| char *current=pa_strdup(cookie.cstr()); | char *current=pa_strdup(cookie.cstr()); |
| Line 615 Table* parse_cookies(Request& r, Table * | Line 613 Table* parse_cookies(Request& r, Table * |
| return &result; | return &result; |
| } | } |
| void *tables_update(HashStringValue& tables, const String::Body name, const String& value){ | void tables_update(HashStringValue& tables, const String::Body name, const String& value){ |
| Table *table; | Table *table; |
| if(Value *valready=tables.get(name)) { | if(Value *valready=tables.get(name)) { |
| // second+ appearence | // second+ appearence |
| Line 694 File_read_http_result pa_internal_file_r | Line 692 File_read_http_result pa_internal_file_r |
| omit_post_charset=vomit_post_charset->as_bool(); | omit_post_charset=vomit_post_charset->as_bool(); |
| } | } |
| if(Value* vcharset_name=options->get(PA_CHARSET_NAME)) { | if(Value* vcharset_name=options->get(PA_CHARSET_NAME)) { |
| asked_remote_charset=&charsets.get(vcharset_name->as_string().change_case(r.charsets.source(), String::CC_UPPER)); | asked_remote_charset=&pa_charsets.get(vcharset_name->as_string()); |
| } | } |
| if(Value* vresponse_charset_name=options->get(PA_RESPONSE_CHARSET_NAME)) { | if(Value* vresponse_charset_name=options->get(PA_RESPONSE_CHARSET_NAME)) { |
| valid_options++; | valid_options++; |
| real_remote_charset=&charsets.get(vresponse_charset_name->as_string().change_case(r.charsets.source(), String::CC_UPPER)); | real_remote_charset=&pa_charsets.get(vresponse_charset_name->as_string()); |
| } | } |
| if(Value* vuser=options->get(HTTP_USER)) { | if(Value* vuser=options->get(HTTP_USER)) { |
| valid_options++; | valid_options++; |
| Line 864 File_read_http_result pa_internal_file_r | Line 862 File_read_http_result pa_internal_file_r |
| } | } |
| } | } |
| char* response_str; | |
| size_t response_size; | HTTP_response response; |
| // sending request | // sending request |
| int status_code=http_request(response_str, response_size, idna_host, port, request, request_size, timeout_secs, fail_on_status_ne_200); | int status_code; |
| ALTER_EXCEPTION_SOURCE(status_code=http_request(response, idna_host, port, request, request_size, timeout_secs, fail_on_status_ne_200), &connect_string); | |
| // processing results | // processing results |
| char* raw_body; size_t raw_body_size; | char* raw_body=response.buf + response.body_offset; |
| char* headers_end_at; | size_t raw_body_size=response.length - response.body_offset; |
| find_headers_end(response_str, headers_end_at, raw_body); | |
| raw_body_size=response_size-(raw_body-response_str); | |
| result.headers=new HashStringValue; | result.headers=new HashStringValue; |
| VHash* vtables=new VHash; | VHash* vtables=new VHash; |
| result.headers->put("tables", vtables); | result.headers->put("tables", vtables); |
| ResponseHeaders response; | if (!real_remote_charset && !response.headers.content_type.is_empty()) |
| real_remote_charset=detect_charset(response.headers.content_type.cstr()); | |
| if(headers_end_at) { | |
| *headers_end_at=0; | |
| const String header_block(String::C(response_str, headers_end_at-response_str), String::L_TAINTED); | |
| ArrayString aheaders; | |
| size_t pos_after=0; | |
| header_block.split(aheaders, pos_after, "\n"); | |
| Array_iterator<const String*> i(aheaders); | |
| i.next(); // skipping status | |
| for(;i.has_next();){ | |
| const char *line=i.next()->cstr(); | |
| if(!response.add_header(line)) | |
| throw Exception("http.response", &connect_string, "bad response from host - bad header \"%s\"", line); | |
| } | |
| } | |
| if (!real_remote_charset && !response.content_type.is_empty()) | |
| real_remote_charset= detect_charset(response.content_type.cstr()); | |
| if(as_text) | if(as_text) |
| real_remote_charset=charsets.checkBOM(raw_body, raw_body_size, real_remote_charset); | real_remote_charset=pa_charsets.checkBOM(raw_body, raw_body_size, real_remote_charset); |
| if (!real_remote_charset) | if (!real_remote_charset) |
| real_remote_charset=asked_remote_charset; // never null | real_remote_charset=asked_remote_charset; // never null |
| for(Array_iterator<ResponseHeaders::Header> i(response.headers); i.has_next(); ){ | for(Array_iterator<HTTP_Headers::Header> i(response.headers.headers); i.has_next(); ){ |
| ResponseHeaders::Header header=i.next(); | HTTP_Headers::Header header=i.next(); |
| header.transcode(*real_remote_charset, r.charsets.source()); | header.transcode(*real_remote_charset, r.charsets.source()); |
| Line 921 File_read_http_result pa_internal_file_r | Line 898 File_read_http_result pa_internal_file_r |
| } | } |
| // filling $.cookies | // filling $.cookies |
| if(Value *vcookies=vtables->hash().get("SET-COOKIE")) | if(vcookies=vtables->hash().get("SET-COOKIE")) |
| result.headers->put(HTTP_COOKIES_NAME, new VTable(parse_cookies(r, vcookies->get_table()))); | result.headers->put(HTTP_COOKIES_NAME, new VTable(parse_cookies(r, vcookies->get_table()))); |
| // output response | // output response |
| Line 941 File_read_http_result pa_internal_file_r | Line 918 File_read_http_result pa_internal_file_r |
| return result; | return result; |
| } | } |
| /* ********************** httpd *************************** */ | |
| class HTTPD_request : public HTTP_response { | |
| public: | |
| const char *method; | |
| const char *uri; | |
| HTTPD_request() : HTTP_response(), method(NULL), uri(NULL){}; | |
| const char *extract_method(char *method_line){ | |
| char* uri_start = strchr(method_line, ' '); | |
| if(!uri_start || uri_start == method_line) | |
| return NULL; | |
| char* uri_end=strchr(uri_start+1, ' '); | |
| if(!uri_end || uri_end == uri_start+1) | |
| return NULL; | |
| uri=pa_strdup(uri_start+1, uri_end-uri_start-1); | |
| return str_upper(method_line, uri_start-method_line); | |
| } | |
| void read_header(int); | |
| size_t read_post(int, char *, size_t); | |
| }; | |
| enum HTTPD_request_state { | |
| HTTPD_METHOD, | |
| HTTPD_HEADERS | |
| }; | |
| void HTTPD_request::read_header(int sock) { | |
| enum HTTPD_request_state state = HTTPD_METHOD; | |
| size_t chunk_size = 0x400*4; | |
| resize(chunk_size); | |
| while(read(sock, chunk_size)){ | |
| switch(state){ | |
| case HTTPD_METHOD: { | |
| size_t method_size = first_line(); | |
| if(!method_size) | |
| break; | |
| char *method_line = pa_strdup(buf, method_size); | |
| method = extract_method(method_line); | |
| if(!method || | |
| strcmp(method, "GET") && | |
| strcmp(method, "HEAD") && | |
| strcmp(method, "POST") && | |
| strcmp(method, "PUT") && | |
| strcmp(method, "DELETE") && | |
| strcmp(method, "PATCH") | |
| ) | |
| throw Exception("httpd.method", new String(method ? method : method_line), "invalid request method"); | |
| state = HTTPD_HEADERS; | |
| } | |
| case HTTPD_HEADERS: { | |
| if(!body_start()) | |
| break; | |
| parse_headers(); | |
| return; | |
| } | |
| } | |
| } | |
| if(state == HTTPD_METHOD) | |
| throw Exception("httpd.request", 0, "bad request from host - no method found (size=%u)", length); | |
| if(state == HTTPD_HEADERS){ | |
| parse_headers(); | |
| body_offset=length; | |
| } | |
| } | |
| size_t HTTPD_request::read_post(int sock, char *body, size_t max_bytes) { | |
| size_t total_read = min(length - body_offset, max_bytes); | |
| memcpy(body, buf, total_read); | |
| while (total_read < max_bytes){ | |
| ssize_t received_size = recv(sock, buf + total_read, max_bytes - total_read, 0); | |
| if(received_size == 0) | |
| return total_read; | |
| if(received_size < 0) { | |
| if(int no = pa_socks_errno()) | |
| throw Exception("httpd.timeout", new String(uri), "error receiving request body: %s (%d)", pa_socks_strerr(no), no); | |
| return total_read; | |
| } | |
| total_read += received_size; | |
| } | |
| return total_read; | |
| } | |
| /* ********************************************************** */ | |
| Array<HTTP_Headers::Header> &HTTPD_Connection::headers() { | |
| return request->headers.headers; | |
| } | |
| const char *HTTPD_Connection::method() { | |
| return request->method; | |
| } | |
| const char *HTTPD_Connection::uri() { | |
| return request->uri; | |
| } | |
| const char *HTTPD_Connection::content_type() { | |
| return request->headers.content_type.cstr(); | |
| } | |
| uint64_t HTTPD_Connection::content_length(){ | |
| return request->headers.content_length; | |
| } | |
| void HTTPD_Connection::read_header(){ | |
| request = new HTTPD_request(); | |
| request->read_header(sock); | |
| } | |
| size_t HTTPD_Connection::read_post(char *body, size_t max_bytes) { | |
| return request->read_post(sock, body, max_bytes); | |
| } | |
| size_t HTTPD_Connection::send_body(const void *buf, size_t size) { | |
| if(send(sock, (const char*)buf, size, 0) != (ssize_t)size) { | |
| int no=pa_socks_errno(); | |
| throw Exception("httpd.timeout", 0, "error sending response: %s (%d)", pa_socks_strerr(no), no); | |
| } | |
| return size; | |
| } | |
| HTTPD_Connection::~HTTPD_Connection(){ | |
| if(sock != -1) | |
| closesocket(sock); | |
| } | |
| static int sock_ready(int fd,int operation,int timeout_value){ | |
| struct timeval timeout = {0, timeout_value * 1000}; | |
| fd_set fds; | |
| FD_ZERO(&fds); | |
| FD_SET(fd, &fds); | |
| switch (operation){ | |
| case 0: return select(fd + 1, &fds, NULL, NULL, &timeout)>0; /* read */ | |
| case 1: return select(fd + 1, NULL, &fds, NULL, &timeout)>0; /* write */ | |
| default: return select(fd + 1, &fds, &fds, NULL, &timeout)>0; /* both */ | |
| } | |
| } | |
| bool HTTPD_Connection::accept(int server_sock, int timeout_value) { | |
| int ready = sock_ready(server_sock, 0, timeout_value); | |
| if (ready < 0) { | |
| int no=pa_socks_errno(); | |
| if(no == EINTR) | |
| return false; | |
| throw Exception("httpd.accept", 0, "error waiting for connection: %s (%d)", pa_socks_strerr(no), no); | |
| } | |
| if (ready == 0) | |
| return false; /* Timeout */ | |
| struct sockaddr_in addr; | |
| socklen_t sock_addr_len = sizeof(struct sockaddr_in); | |
| memset(&addr, 0, sock_addr_len); | |
| sock = ::accept(server_sock, (struct sockaddr *)&addr, &sock_addr_len); | |
| if(server_sock == -1){ | |
| int no=pa_socks_errno(); | |
| throw Exception("httpd.accept", 0, "error accepting connection: %s (%d)", pa_socks_strerr(no), no); | |
| } | |
| remote_addr = pa_strdup(inet_ntoa(addr.sin_addr)); | |
| return true; | |
| } | |
| int HTTPD_Server::bind(const char *host_port){ | |
| struct sockaddr_in me; | |
| const char *port = strchr(host_port, ':'); | |
| const char *host = NULL; | |
| if(port && port > host_port){ | |
| host = pa_strdup(host_port, port - host_port); | |
| port += 1; | |
| } else { | |
| port = host_port; | |
| } | |
| if(!set_addr(&me, host, pa_atoui(port))){ | |
| if (host) | |
| throw Exception("httpd.bind", 0, "can not resolve hostname \"%s\"", host); | |
| me.sin_addr.s_addr=INADDR_ANY; | |
| } | |
| int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/); | |
| if(sock < 0){ | |
| int no=pa_socks_errno(); | |
| throw Exception("httpd.bind", 0, "can not make socket: %s (%d)", pa_socks_strerr(no), no); | |
| } | |
| static int sock_on = 1; | |
| if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&sock_on, sizeof(sock_on)) || | |
| setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&sock_on, sizeof(sock_on)) || | |
| ::bind(sock, (struct sockaddr*)&me, sizeof(me)) || | |
| listen(sock, 16)) { | |
| closesocket(sock); | |
| int no = pa_socks_errno(); | |
| throw Exception("httpd.bind", 0, "can not bind socket: %s (%d)", pa_socks_strerr(no), no); | |
| } | |
| return sock; | |
| } |