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| version 1.8, 2008/02/14 18:31:38 | version 1.113, 2020/12/17 13:38:45 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: http support functions. | Parser: http support functions. |
| Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2020 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) |
| */ | */ |
| static const char * const IDENT_HTTP_C="$Date$"; | |
| #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_vfile.h" | |
| #include "pa_random.h" | |
| volatile const char * IDENT_PA_HTTP_C="$Id$" IDENT_PA_HTTP_H; | |
| #ifdef _MSC_VER | |
| #include <windows.h> | |
| #define socklen_t int | |
| #else | |
| #define closesocket close | |
| #endif | |
| // defines | // defines |
| #define HTTP_METHOD_NAME "method" | #define HTTP_METHOD_NAME "method" |
| #define HTTP_FORM_NAME "form" | #define HTTP_FORM_NAME "form" |
| #define HTTP_BODY_NAME "body" | #define HTTP_BODY_NAME "body" |
| #define HTTP_TIMEOUT_NAME "timeout" | #define HTTP_TIMEOUT_NAME "timeout" |
| #define HTTP_HEADERS_NAME "headers" | #define HTTP_HEADERS_NAME "headers" |
| #define HTTP_ANY_STATUS_NAME "any-status" | #define HTTP_FORM_ENCTYPE_NAME "enctype" |
| // #define HTTP_CHARSET_NAME "charset" | #define HTTP_ANY_STATUS_NAME "any-status" |
| #define HTTP_TABLES_NAME "tables" | #define HTTP_OMIT_POST_CHARSET_NAME "omit-post-charset" // ^file::load[...;http://...;$.method[post]] by default adds charset to content-type |
| #define HTTP_USER "user" | #define HTTP_USER "user" |
| #define HTTP_PASSWORD "password" | #define HTTP_PASSWORD "password" |
| #define HTTP_USER_AGENT "user-agent" | |
| #define DEFAULT_USER_AGENT "parser3" | #define DEFAULT_USER_AGENT "parser3" |
| # ifndef INADDR_NONE | #ifndef INADDR_NONE |
| # define INADDR_NONE ((ulong) -1) | #define INADDR_NONE ((ulong) -1) |
| # endif | #endif |
| #undef CRLF | #undef CRLF |
| #define CRLF "\r\n" | #define CRLF "\r\n" |
| // 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 { | |
| public: | |
| Cookies_table_template_columns() { | |
| *this+=new String("name"); | |
| *this+=new String("value"); | |
| *this+=new String("expires"); | |
| *this+=new String("max-age"); | |
| *this+=new String("domain"); | |
| *this+=new String("path"); | |
| *this+=new String("httponly"); | |
| *this+=new String("secure"); | |
| } | |
| }; | |
| static bool set_addr(struct sockaddr_in *addr, const char* host, const short port){ | static bool set_addr(struct sockaddr_in *addr, const char* host, const short port){ |
| memset(addr, 0, sizeof(*addr)); | memset(addr, 0, sizeof(*addr)); |
| addr->sin_family=AF_INET; | addr->sin_family=AF_INET; |
| addr->sin_port=htons(port); | addr->sin_port=htons(port); |
| if(host) { | if(host) { |
| ulong packed_ip=inet_addr(host); | struct hostent *hostIP=gethostbyname(host); |
| if(packed_ip!=INADDR_NONE) | if(hostIP && hostIP->h_addrtype == AF_INET){ |
| memcpy(&addr->sin_addr, &packed_ip, sizeof(packed_ip)); | memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length); |
| else { | return true; |
| struct hostent *hostIP=gethostbyname(host); | } |
| if(hostIP) | } |
| memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length); | return false; |
| else | |
| return false; | |
| } | |
| } else | |
| addr->sin_addr.s_addr=INADDR_ANY; | |
| return true; | |
| } | |
| size_t guess_content_length(char* buf) { | |
| char* ptr; | |
| 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) { | class HTTP_response : public PA_Allocated { |
| int result=0; | public: |
| // fetching some to local buffer, guessing on possible content-length | char *buf; |
| response_size=0x400*20; // initial size if content-length could not be determined | size_t length; |
| const size_t preview_size=0x400*20; | size_t buf_size; |
| char preview_buf[preview_size+1/*terminator*/]; // 20K buffer to preview headers | size_t body_offset; |
| ssize_t received_size=recv(sock, preview_buf, preview_size, 0); | |
| if(received_size==0) | HTTP_Headers headers; |
| goto done; | |
| if(received_size<0) { | HTTP_response() : buf(NULL), length(0), buf_size(0), body_offset(0){} |
| if(int no=pa_socks_errno()) | |
| throw Exception("http.timeout", | void resize(size_t size){ |
| 0, | buf_size=size; |
| "error receiving response header: %s (%d)", pa_socks_strerr(no), no); | buf=(char *)pa_realloc(buf, size + 1); |
| 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 | |
| { | bool read(int sock, size_t size){ |
| if(size_t content_length=guess_content_length(preview_buf)) | if(length + size > buf_size) |
| response_size=preview_size+content_length; // a little more than needed, will adjust response_size by actual received size later | 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: %s (%d)", pa_socks_strerr(no), no); | |
| return false; | |
| } | |
| length+=received_size; | |
| buf[length]='\0'; | |
| return true; | |
| } | } |
| // [gcc is happier this way, see goto above] | size_t first_line(){ |
| { | char *header=strchr(buf, '\n'); |
| // allocating initial buf | if(!header) |
| response=(char*)pa_malloc_atomic(response_size+1/*terminator*/); // just setting memory block type | return false; |
| char* ptr=response; | |
| size_t todo_size=response_size; | return header-buf; |
| // coping part of already received body | } |
| memcpy(ptr, preview_buf, received_size); | |
| ptr+=received_size; | const char *status_code(char *status_line, int &result){ |
| todo_size-=received_size; | char* status_start = strchr(status_line, ' '); |
| // we use terminator byte for two purposes here: | if(!(status_start++)) |
| // 1. we return there zero always, not knowing: maybe they would want to create String form $file.body? | return status_line; |
| // 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 | char* status_end=strchr(status_start, ' '); |
| // when recv gets more than we expected | |
| // a) we know that the content-length guess was wrong | if(!status_end) |
| // b) we have space to put the first byte of extra data | return status_line; |
| // c) we use less code to detect normal situation: on last while-cycle recv expected to just return 0 | |
| while(true) { | if(status_end==status_start) |
| received_size=recv(sock, ptr, todo_size+1/*there is always a place for terminator*/, 0); | return status_line; |
| if(received_size==0) { | |
| response_size-=todo_size; // in case we received less than expected, cut down the reported size | 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; | |
| } | |
| bool body_start(){ | |
| char *p=buf; | |
| while((p=strchr(p, '\n'))) { | |
| if(p[1]=='\r' && p[2]=='\n'){ // \r\n\r\n | |
| *p='\0'; | |
| body_offset=p-buf+3; | |
| return true; | |
| } | |
| if(p[1]=='\n') { // \n\n | |
| *p='\0'; | |
| body_offset=p-buf+2; | |
| return true; | |
| } | |
| p++; | |
| } | |
| return false; | |
| } | |
| void parse_headers(){ | |
| const String header_block(buf, String::L_TAINTED); | |
| ArrayString aheaders; | |
| 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 182 done: | Line 262 done: |
| #ifdef PA_USE_ALARM | #ifdef PA_USE_ALARM |
| static sigjmp_buf timeout_env; | static sigjmp_buf timeout_env; |
| static void timeout_handler(int /*sig*/){ | static void timeout_handler(int /*sig*/){ |
| siglongjmp(timeout_env, 1); | siglongjmp(timeout_env, 1); |
| } | } |
| #define ALARM(value) alarm(value) | |
| #else | |
| #define ALARM(value) | |
| #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, | |
| 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 int sock=-1; // to prevent makeing it register variable, because it will be clobbered by longjmp [thanks gcc warning] |
| int sock=-1; | |
| #ifdef PA_USE_ALARM | |
| signal(SIGALRM, timeout_handler); | |
| #endif | |
| #ifdef PA_USE_ALARM | #ifdef PA_USE_ALARM |
| signal(SIGALRM, timeout_handler); | |
| if(sigsetjmp(timeout_env, 1)) { | if(sigsetjmp(timeout_env, 1)) { |
| // stupid gcc [2.95.4] generated bad code | // duplicating closesocket to make code more simple for old compilers |
| // which failed to handle sigsetjmp+throw: crashed inside of pre-throw code. | if(sock>=0) |
| // rewritten simplier [athough duplicating closesocket code] | closesocket(sock); |
| if(sock>=0) | throw Exception("http.timeout", 0, "timeout occurred while retrieving document"); |
| closesocket(sock); | |
| throw Exception("http.timeout", | |
| 0, | |
| "timeout occured while retrieving document"); | |
| return 0; // never | return 0; // never |
| } else { | } else |
| alarm(timeout_secs); | |
| #endif | #endif |
| { | |
| ALARM(timeout_secs); | |
| try { | try { |
| int result; | int result; |
| 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 247 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); | |
| } | } |
| size_t request_size=strlen(request); | |
| 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 | ALARM(0); |
| alarm(0); | |
| #endif | |
| return result; | return result; |
| } catch(...) { | } catch(...) { |
| #ifdef PA_USE_ALARM | ALARM(0); |
| alarm(0); | if(sock>=0) |
| #endif | closesocket(sock); |
| if(sock>=0) | |
| closesocket(sock); | |
| rethrow; | rethrow; |
| } | } |
| #ifdef PA_USE_ALARM | |
| } | } |
| #endif | |
| } | } |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| struct Http_pass_header_info { | struct Http_pass_header_info { |
| Request_charsets* charsets; | Request_charsets* charsets; |
| String* request; | String* request; |
| bool user_agent_specified; | bool* user_agent_specified; |
| bool* content_type_specified; | |
| bool* content_type_url_encoded; | |
| }; | }; |
| #endif | #endif |
| static void http_pass_header(HashStringValue::key_type key, | |
| HashStringValue::value_type value, | char *pa_http_safe_header_name(const char *name) { |
| Http_pass_header_info *info) { | char *result=pa_strdup(name); |
| *info->request <<key<<": " | char *n=result; |
| << attributed_meaning_to_string(*value, String::L_HTTP_HEADER, false) | if(!pa_isalpha((unsigned char)*n)) |
| << CRLF; | *n++ = '_'; |
| for(; *n; ++n) { | |
| if(String(key, String::L_TAINTED).change_case(info->charsets->source(), String::CC_UPPER)=="USER-AGENT") | if (!pa_isalnum((unsigned char)*n) && *n != '-' && *n != '_') |
| info->user_agent_specified=true; | *n = '_'; |
| } | |
| return result; | |
| } | } |
| static void http_pass_header(HashStringValue::key_type aname, HashStringValue::value_type avalue, Http_pass_header_info *info) { | |
| static Charset* detect_charset(Charset& source_charset, const String& content_type_value) { | const char* name_cstr=aname.cstr(); |
| const String::Body CONTENT_TYPE_VALUE= | |
| content_type_value.change_case(source_charset, String::CC_UPPER); | if(strcasecmp(name_cstr, HTTP_CONTENT_LENGTH)==0) |
| // content-type: xxx/xxx; source_charset=WE-NEED-THIS | return; |
| // content-type: xxx/xxx; source_charset="WE-NEED-THIS" | |
| // content-type: xxx/xxx; source_charset="WE-NEED-THIS"; | String name=String(pa_http_safe_header_name(capitalize(name_cstr)), String::L_AS_IS); |
| size_t before_charseteq_pos=CONTENT_TYPE_VALUE.pos("CHARSET="); | String value=attributed_meaning_to_string(*avalue, String::L_HTTP_HEADER, true); |
| if(before_charseteq_pos!=STRING_NOT_FOUND) { | |
| size_t charset_begin=before_charseteq_pos+8/*CHARSET=*/; | |
| size_t open_quote_pos=CONTENT_TYPE_VALUE.pos('"', charset_begin); | |
| bool quoted=open_quote_pos==charset_begin; | |
| if(quoted) | |
| charset_begin++; // skip opening '"' | |
| size_t charset_end=CONTENT_TYPE_VALUE.length(); | |
| if(quoted) { | |
| size_t close_quote_pos=CONTENT_TYPE_VALUE.pos('"', charset_begin); | |
| if(close_quote_pos!=STRING_NOT_FOUND) | |
| charset_end=close_quote_pos; | |
| } else { | |
| size_t delim_pos=CONTENT_TYPE_VALUE.pos(';', charset_begin); | |
| if(delim_pos!=STRING_NOT_FOUND) | |
| charset_end=delim_pos; | |
| } | |
| const String::Body CHARSET_NAME_BODY= | |
| CONTENT_TYPE_VALUE.mid(charset_begin, charset_end - charset_begin); | |
| return &charsets.get(CHARSET_NAME_BODY); | *info->request << name << ": " << value << CRLF; |
| if(strcasecmp(name_cstr, HTTP_USER_AGENT)==0) | |
| *info->user_agent_specified=true; | |
| if(strcasecmp(name_cstr, HTTP_CONTENT_TYPE)==0){ | |
| *info->content_type_specified=true; | |
| *info->content_type_url_encoded=pa_strncasecmp(value.cstr(), HTTP_CONTENT_TYPE_FORM_URLENCODED)==0; | |
| } | } |
| } | |
| static void http_pass_cookie(HashStringValue::key_type name, | |
| HashStringValue::value_type value, | |
| Http_pass_header_info *info) { | |
| *info->request << String(name, String::L_HTTP_COOKIE) << "=" | |
| << attributed_meaning_to_string(*value, String::L_HTTP_COOKIE, true) | |
| << "; "; | |
| return 0; | |
| } | } |
| static const String* basic_authorization_field(const char* user, const char* pass) { | static const String* basic_authorization_field(const char* user, const char* pass) { |
| Line 340 static const String* basic_authorization | Line 399 static const String* basic_authorization |
| if(pass) | if(pass) |
| combined<<pass; | combined<<pass; |
| String* result=new String("Basic "); *result<<pa_base64_encode(combined.cstr(), combined.length()); | String* result=new String("Basic "); |
| *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, | result << String(key, String::L_URI) << "=" << String(value, String::L_URI) << "&"; |
| const String& value, | |
| String& result) | |
| { | |
| result << String(key, String::L_URI) << "="; | |
| result.append(value, String::L_URI, true); | |
| result<< "&"; | |
| } | } |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| struct Form_table_value2string_info { | struct Form_table_value2string_info { |
| HashStringValue::key_type key; | HashStringValue::key_type key; |
| Line 365 struct Form_table_value2string_info { | Line 420 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(0, | 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 must either string or table", value->type()); | |
| } | } |
| const char* pa_form2string(HashStringValue& form, Request_charsets& charsets) { | const char* pa_form2string(HashStringValue& form, Request_charsets& charsets) { |
| String string; | String string; |
| form.for_each<String*>(form_value2string, &string); | form.for_each<String*>(form_value2string, &string); |
| return string.cstr(String::L_UNSPECIFIED, 0, &charsets); | return string.untaint_and_transcode_cstr(String::L_URI, &charsets); |
| } | } |
| static void find_headers_end(char* p, | |
| char*& headers_end_at, | struct FormPart { |
| char*& raw_body) | Request* r; |
| { | const char* boundary; |
| raw_body=p; | String* string; |
| // \n\n | Form_table_value2string_info* info; |
| // \r\n\r\n | |
| while((p=strchr(p, '\n'))) { | struct BinaryBlock{ |
| headers_end_at=++p; // \n>.< | const char* ptr; |
| if(*p=='\r') // \r\n>\r?<\n | size_t length; |
| p++; | |
| if(*p=='\n') { // \r\n\r>\n?< | BinaryBlock(String* astring, Request* r): ptr(astring->untaint_and_transcode_cstr(String::L_AS_IS, &r->charsets)), length(strlen(ptr)){} |
| raw_body=p+1; | BinaryBlock(const char* aptr, size_t alength): ptr(aptr), length(alength){} |
| return; | }; |
| Array<BinaryBlock> blocks; | |
| FormPart(Request* ar, const char* aboundary): r(ar), boundary(aboundary), string(new String()){} | |
| const char *post(size_t &length){ | |
| if(blocks.count()){ | |
| blocks+=BinaryBlock(string, r); | |
| length=0; | |
| for(size_t i=0; i<blocks.count(); i++) | |
| length+=blocks[i].length; | |
| char *result=(char *)pa_malloc_atomic(length); | |
| char *ptr=result; | |
| for(size_t i=0; i<blocks.count(); i++){ | |
| memcpy(ptr, blocks[i].ptr, blocks[i].length); | |
| ptr+=blocks[i].length; | |
| } | |
| return result; | |
| } else { | |
| BinaryBlock result(string, r); | |
| length=result.length; | |
| return result.ptr; | |
| } | } |
| } | } |
| headers_end_at=0; | }; |
| static void form_part_boundary_header(FormPart& part, String::Body name, const char* file_name=0) { | |
| *part.string << "--" << part.boundary << CRLF CONTENT_DISPOSITION_CAPITALIZED ": form-data; name=\"" << name << "\""; | |
| if(file_name){ | |
| if(strcmp(file_name, NONAME_DAT)!=0) | |
| *part.string << "; filename=\"" << file_name << "\""; | |
| *part.string << CRLF HTTP_CONTENT_TYPE_CAPITALIZED ": " << part.r->mime_type_of(file_name); | |
| } | |
| *part.string << CRLF CRLF; | |
| } | |
| static void form_string_value2part(HashStringValue::key_type key, const String& value, FormPart& part) { | |
| form_part_boundary_header(part, key); | |
| *part.string << value << CRLF; | |
| } | |
| static void form_file_value2part(HashStringValue::key_type key, VFile& vfile, FormPart& part) { | |
| 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(vfile.value_ptr(), vfile.value_size()); | |
| part.string=new String(); | |
| *part.string << CRLF; | |
| } | |
| static void form_table_value2part(Table::element_type row, FormPart* part) { | |
| form_string_value2part(part->info->key, *row->get(0), *part); | |
| } | |
| static void form_value2part(HashStringValue::key_type key, HashStringValue::value_type value, FormPart& part) { | |
| if(const String* svalue=value->get_string()) | |
| form_string_value2part(key, *svalue, part); | |
| else if(Table* tvalue=value->get_table()) { | |
| Form_table_value2string_info info(key, *part.string); | |
| part.info = &info; | |
| tvalue->for_each(form_table_value2part, &part); | |
| } else if(VFile* vfile=static_cast<VFile *>(value->as("file"))){ | |
| form_file_value2part(key, *vfile, part); | |
| } else | |
| 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()); | |
| } | |
| const char* pa_form2string_multipart(HashStringValue& form, Request& r, const char* boundary, size_t& post_size){ | |
| FormPart formpart(&r, boundary); | |
| form.for_each<FormPart&>(form_value2part, formpart); | |
| *formpart.string << "--" << boundary << "--"; | |
| // @todo: return binary blocks here to save memory in pa_internal_file_read_http | |
| return formpart.post(post_size); | |
| } | |
| // 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) { | |
| char *current=pa_strdup(cookie.cstr()); | |
| const String* name=0; | |
| const String* value=&String::Empty; | |
| const String* expires=&String::Empty; | |
| const String* max_age=&String::Empty; | |
| const String* path=&String::Empty; | |
| const String* domain=&String::Empty; | |
| const String* httponly=&String::Empty; | |
| const String* secure=&String::Empty; | |
| bool first_pair=true; | |
| do { | |
| if(char *meaning=search_stop(current, ';')) | |
| if(char *attribute=search_stop(meaning, '=')) { | |
| const String* sname=new String(unescape_chars(attribute, strlen(attribute), &r.charsets.source(), true/*don't convert '"' to space*/), String::L_TAINTED); | |
| const String* smeaning=0; | |
| if(meaning) | |
| smeaning=new String(unescape_chars(meaning, strlen(meaning), &r.charsets.source(), true/*don't convert '"' to space*/), String::L_TAINTED); | |
| if(first_pair) { | |
| // name + value | |
| name=sname; | |
| value=smeaning; | |
| first_pair=false; | |
| } else { | |
| const String& slower=sname->change_case(r.charsets.source(), String::CC_LOWER); | |
| if(slower == "expires") | |
| expires=smeaning; | |
| else if(slower == "max-age") | |
| max_age=smeaning; | |
| else if(slower == "domain") | |
| domain=smeaning; | |
| else if(slower == "path") | |
| path=smeaning; | |
| else if(slower == "httponly") | |
| httponly=new String("1", String::L_CLEAN); | |
| else if(slower == "secure") | |
| secure=new String("1", String::L_CLEAN); | |
| else { | |
| // todo@ ? | |
| } | |
| } | |
| } | |
| } while(current); | |
| if(!name) | |
| return 0; | |
| ArrayString* result=new ArrayString(8); | |
| *result+=name; | |
| *result+=value; | |
| *result+=expires; | |
| *result+=max_age; | |
| *result+=domain; | |
| *result+=path; | |
| *result+=httponly; | |
| *result+=secure; | |
| return result; | |
| } | |
| Table* parse_cookies(Request& r, Table *cookies){ | |
| Table& result=*new Table(new Cookies_table_template_columns); | |
| for(Array_iterator<Table::element_type> i(*cookies); i.has_next(); ) | |
| if(ArrayString* row=parse_cookie(r, *i.next()->get(0))) | |
| result+=row; | |
| return &result; | |
| } | |
| void tables_update(HashStringValue& tables, const String::Body name, const String& value){ | |
| Table *table; | |
| if(Value *valready=tables.get(name)) { | |
| // second+ appearence | |
| table=valready->get_table(); | |
| } else { | |
| // first appearence | |
| Table::columns_type columns=new ArrayString(1); | |
| *columns+=new String("value"); | |
| table=new Table(columns); | |
| tables.put(name, new VTable(table)); | |
| } | |
| // this string becomes next row | |
| ArrayString& row=*new ArrayString(1); | |
| row+=&value; | |
| *table+=&row; | |
| } | } |
| /// @todo build .cookies field. use ^file.tables.SET-COOKIES.menu{ for now | /// @todo build .cookies field. use ^file.tables.SET-COOKIES.menu{ for now |
| File_read_http_result pa_internal_file_read_http(Request_charsets& charsets, | File_read_http_result pa_internal_file_read_http(Request& r, const String& file_spec, bool as_text, HashStringValue *options, bool transcode_text_result) { |
| const String& file_spec, | |
| bool as_text, | |
| HashStringValue *options) { | |
| File_read_http_result result; | File_read_http_result result; |
| char host[MAX_STRING]; | char host[MAX_STRING]; |
| const char *idna_host; | |
| const char* uri; | const char* uri; |
| short port; | short port=80; |
| const char* method="GET"; bool method_is_get; | const char* method="GET"; |
| bool method_is_get=true; | |
| HashStringValue* form=0; | HashStringValue* form=0; |
| const char* body_cstr=0; | |
| int timeout_secs=2; | int timeout_secs=2; |
| bool fail_on_status_ne_200=true; | bool fail_on_status_ne_200=true; |
| bool omit_post_charset=false; | |
| Value* vheaders=0; | Value* vheaders=0; |
| Charset *asked_remote_charset=0; | Value* vcookies=0; |
| Value* vbody=0; | |
| Charset* asked_remote_charset=0; | |
| Charset* real_remote_charset=0; | |
| const char* user_cstr=0; | const char* user_cstr=0; |
| const char* password_cstr=0; | const char* password_cstr=0; |
| const char* encode=0; | |
| bool multipart=false; | |
| if(options) { | if(options) { |
| int valid_options=pa_get_valid_file_options_count(*options); | int valid_options=pa_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().change_case(r.charsets.source(), String::CC_UPPER).cstr(); |
| method_is_get=strcmp(method, "GET")==0; | |
| } | |
| if(Value* vencode=options->get(HTTP_FORM_ENCTYPE_NAME)) { | |
| valid_options++; | |
| encode=vencode->as_string().cstr(); | |
| } | } |
| if(Value* vform=options->get(HTTP_FORM_NAME)) { | if(Value* vform=options->get(HTTP_FORM_NAME)) { |
| valid_options++; | valid_options++; |
| form=vform->get_hash(); | form=vform->get_hash(); |
| } | } |
| if(Value* vbody=options->get(HTTP_BODY_NAME)) { | if(vbody=options->get(HTTP_BODY_NAME)) { |
| valid_options++; | valid_options++; |
| body_cstr=vbody->as_string().cstr(String::L_UNSPECIFIED); | |
| } | } |
| if(Value* vtimeout=options->get(HTTP_TIMEOUT_NAME)) { | if(Value* vtimeout=options->get(HTTP_TIMEOUT_NAME)) { |
| valid_options++; | valid_options++; |
| timeout_secs=vtimeout->as_int(); | timeout_secs=vtimeout->as_int(); |
| } | } |
| if((vheaders=options->get(HTTP_HEADERS_NAME))) { | if(vheaders=options->get(HTTP_HEADERS_NAME)) { |
| valid_options++; | |
| } | |
| if(vcookies=options->get(HTTP_COOKIES_NAME)) { | |
| valid_options++; | valid_options++; |
| } | } |
| if(Value* vany_status=options->get(HTTP_ANY_STATUS_NAME)) { | if(Value* vany_status=options->get(HTTP_ANY_STATUS_NAME)) { |
| valid_options++; | valid_options++; |
| fail_on_status_ne_200=!vany_status->as_bool(); | fail_on_status_ne_200=!vany_status->as_bool(); |
| } | } |
| if(Value* vomit_post_charset=options->get(HTTP_OMIT_POST_CHARSET_NAME)){ | |
| valid_options++; | |
| 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)) { |
| // valid_options++; | asked_remote_charset=&pa_charsets.get(vcharset_name->as_string()); |
| asked_remote_charset=&::charsets.get(vcharset_name->as_string(). | } |
| change_case(charsets.source(), String::CC_UPPER)); | if(Value* vresponse_charset_name=options->get(PA_RESPONSE_CHARSET_NAME)) { |
| valid_options++; | |
| 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 464 File_read_http_result pa_internal_file_r | Line 700 File_read_http_result pa_internal_file_r |
| } | } |
| if(valid_options!=options->count()) | if(valid_options!=options->count()) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); |
| 0, | |
| "invalid option passed"); | |
| } | } |
| if(!asked_remote_charset) // defaulting to $request:charset | if(!asked_remote_charset) // defaulting to $request:charset |
| asked_remote_charset=&charsets.source(); | asked_remote_charset=&(r.charsets).source(); |
| if(encode){ | |
| if(method_is_get) | |
| throw Exception(PARSER_RUNTIME, 0, "you can not use $." HTTP_FORM_ENCTYPE_NAME " option with method GET"); | |
| method_is_get=strcmp(method, "GET")==0; | multipart=strcasecmp(encode, HTTP_CONTENT_TYPE_MULTIPART_FORMDATA)==0; |
| if(method_is_get && body_cstr) | |
| throw Exception(PARSER_RUNTIME, | if(!multipart && strcasecmp(encode, HTTP_CONTENT_TYPE_FORM_URLENCODED)!=0) |
| 0, | throw Exception(PARSER_RUNTIME, 0, "$." HTTP_FORM_ENCTYPE_NAME " option value can be " HTTP_CONTENT_TYPE_FORM_URLENCODED " or " HTTP_CONTENT_TYPE_MULTIPART_FORMDATA " only"); |
| "you can not use $."HTTP_BODY_NAME" option with method GET"); | } |
| if(vbody){ | |
| if(method_is_get) | |
| throw Exception(PARSER_RUNTIME, 0, "you can not use $." HTTP_BODY_NAME " option with method GET"); | |
| if(form) | |
| throw Exception(PARSER_RUNTIME, 0, "you can not use options $." HTTP_BODY_NAME " and $." HTTP_FORM_NAME " together"); | |
| } | |
| //preparing request | //preparing request |
| String& connect_string=*new String; | String& connect_string=*new String(file_spec); |
| // not in ^sql{... L_SQL ...} spirit, but closer to ^file::load one | |
| connect_string.append(file_spec, String::L_URI); // tainted pieces -> URI pieces | |
| String request_head_and_body; | const char* request; |
| size_t request_size; | |
| { | { |
| // influence URLencoding of tainted pieces to String::L_URI lang | // influence URLencoding of tainted pieces to String::L_URI lang |
| Temp_client_charset temp(charsets, *asked_remote_charset); | Temp_client_charset temp(r.charsets, *asked_remote_charset); |
| const char* connect_string_cstr=connect_string.cstr(String::L_UNSPECIFIED, 0, &charsets); | const char* connect_string_cstr=connect_string.untaint_and_transcode_cstr(String::L_URI, &(r.charsets)); |
| const char* current=connect_string_cstr; | const char* current=connect_string_cstr; |
| if(strncmp(current, "http://", 7)!=0) | if(strncmp(current, "http://", 7)!=0) |
| throw Exception(0, | throw Exception(PARSER_RUNTIME, &connect_string, "does not start with http://"); //never |
| &connect_string, | |
| "does not start with http://"); //never | |
| current+=7; | current+=7; |
| strncpy(host, current, sizeof(host)-1); host[sizeof(host)-1]=0; | strncpy(host, current, sizeof(host)-1); host[sizeof(host)-1]=0; |
| char* host_uri=lsplit(host, '/'); | char* host_uri=lsplit(host, '/'); |
| uri=host_uri?current+(host_uri-1-host):"/"; | uri=host_uri?current+(host_uri-1-host):"/"; |
| char* port_cstr=lsplit(host, ':'); | char* port_cstr=lsplit(host, ':'); |
| char* error_pos=0; | |
| port=port_cstr?(short)strtol(port_cstr, &error_pos, 0):80; | if (port_cstr){ |
| char* error_pos=0; | |
| port=(short)strtol(port_cstr, &error_pos, 10); | |
| if(port==0 || *error_pos) | |
| throw Exception(PARSER_RUNTIME, &connect_string, "invalid port number '%s'", port_cstr); | |
| } | |
| bool uri_has_query_string=strchr(uri, '?')!=0; | idna_host=pa_idna_encode(host, r.charsets.source()); |
| //making request head | // making request head |
| String head; | String head; |
| head << method; | head << method << " " << uri; |
| head << " " << uri; | if(method_is_get && form) |
| if(form) | head << (strchr(uri, '?')!=0?"&":"?") << pa_form2string(*form, r.charsets); |
| if(method_is_get) | |
| head << (uri_has_query_string?"&":"?") << pa_form2string(*form, charsets); | head <<" HTTP/1.0" CRLF "Host: "<< idna_host; |
| head <<" HTTP/1.0" CRLF | if (port != 80) |
| "host: "<< host << CRLF; | head << ":" << port_cstr; |
| if(form && !method_is_get) { | head << CRLF; |
| head << "content-type: application/x-www-form-urlencoded" CRLF; | |
| body_cstr = pa_form2string(*form, charsets); | |
| } | |
| // http://www.ietf.org/rfc/rfc2617.txt | char* boundary= multipart ? get_uuid_boundary() : 0; |
| if(const String* authorization_field_value=basic_authorization_field(user_cstr, password_cstr)) | |
| head<<"authorization: "<<*authorization_field_value<<CRLF; | |
| String user_headers; | |
| bool user_agent_specified=false; | bool user_agent_specified=false; |
| bool content_type_specified=false; | |
| bool content_type_url_encoded=false; | |
| if(vheaders && !vheaders->is_string()) { // allow empty | if(vheaders && !vheaders->is_string()) { // allow empty |
| if(HashStringValue *headers=vheaders->get_hash()) { | if(HashStringValue *headers=vheaders->get_hash()) { |
| Http_pass_header_info info={&charsets, &head, false}; | Http_pass_header_info info={ |
| &(r.charsets), | |
| &user_headers, | |
| &user_agent_specified, | |
| &content_type_specified, | |
| &content_type_url_encoded}; | |
| headers->for_each<Http_pass_header_info*>(http_pass_header, &info); | headers->for_each<Http_pass_header_info*>(http_pass_header, &info); |
| user_agent_specified=info.user_agent_specified; | |
| } else | } else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, "headers param must be hash"); |
| &connect_string, | |
| "headers param must be hash"); | |
| }; | }; |
| if(!user_agent_specified) // defaulting | |
| head << "user-agent: " DEFAULT_USER_AGENT CRLF; | |
| if(body_cstr) { | const char* request_body=0; |
| head << "content-length: " << format(strlen(body_cstr), "%u") << CRLF; | size_t post_size=0; |
| if(form && !method_is_get) { | |
| head << "Content-Type: " << (multipart ? HTTP_CONTENT_TYPE_MULTIPART_FORMDATA : HTTP_CONTENT_TYPE_FORM_URLENCODED); | |
| if(!omit_post_charset) | |
| head << "; charset=" << asked_remote_charset->NAME_CSTR(); | |
| if(multipart) { | |
| head << "; boundary=" << boundary; | |
| request_body=pa_form2string_multipart(*form, r/*charsets & mime_type needed*/, boundary, post_size/*correct post_size returned here*/); | |
| } else { | |
| request_body=pa_form2string(*form, r.charsets); | |
| post_size=strlen(request_body); | |
| } | |
| head << CRLF; | |
| } else if(vbody) { | |
| // $.body was specified | |
| if(content_type_url_encoded){ | |
| // transcode + url-encode | |
| request_body=vbody->as_string().untaint_and_transcode_cstr(String::L_URI, &(r.charsets)); | |
| } else { | |
| // content-type != application/x-www-form-urlencoded -> transcode only, don't url-encode! | |
| const String &sbody=vbody->as_string(); | |
| request_body=Charset::transcode(String::C(sbody.cstr(), sbody.length()), r.charsets.source(), *asked_remote_charset).str; | |
| } | |
| post_size=strlen(request_body); | |
| } | } |
| const char* head_cstr=head.cstr(String::L_UNSPECIFIED, 0, &charsets); | // http://www.ietf.org/rfc/rfc2617.txt |
| if(const String* authorization_field_value=basic_authorization_field(user_cstr, password_cstr)) | |
| head << "Authorization: " << *authorization_field_value << CRLF; | |
| // head + end of header | head << user_headers; |
| request_head_and_body << head_cstr << CRLF; | |
| // body | if(!user_agent_specified) // defaulting |
| if(body_cstr) | head << "User-Agent: " DEFAULT_USER_AGENT CRLF; |
| request_head_and_body << body_cstr; | |
| if(form && !method_is_get && content_type_specified) // POST + form + content-type was specified | |
| throw Exception(PARSER_RUNTIME, 0, "$.content-type can't be specified with method POST"); | |
| if(vcookies && !vcookies->is_string()){ // allow empty | |
| if(HashStringValue* cookies=vcookies->get_hash()) { | |
| head << "Cookie: "; | |
| Http_pass_header_info info={&(r.charsets), &head, 0, 0, 0}; | |
| cookies->for_each<Http_pass_header_info*>(http_pass_cookie, &info); | |
| head << CRLF; | |
| } else | |
| throw Exception(PARSER_RUNTIME, 0, "cookies param must be hash"); | |
| } | |
| if(request_body) | |
| head << "Content-Length: " << format(post_size, "%u") << CRLF; | |
| head << CRLF; | |
| const char *request_head=head.untaint_and_transcode_cstr(String::L_URI, &(r.charsets)); | |
| if(request_body){ | |
| size_t head_size = strlen(request_head); | |
| request_size=post_size + head_size; | |
| char *ptr=(char *)pa_malloc_atomic(request_size); | |
| memcpy(ptr, request_head, head_size); | |
| memcpy(ptr+head_size, request_body, post_size); | |
| request=ptr; | |
| } else { | |
| request_size=strlen(request_head); | |
| request=request_head; | |
| } | |
| } | } |
| //sending request | |
| char* response; | HTTP_response response; |
| size_t response_size; | |
| int status_code=http_request(response, response_size, | // sending request |
| host, port, request_head_and_body.cstr(), | int status_code; |
| timeout_secs, fail_on_status_ne_200); | 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, | |
| headers_end_at, | |
| raw_body); | |
| raw_body_size=response_size-(raw_body-response); | |
| result.headers=new HashStringValue; | result.headers=new HashStringValue; |
| VHash* vtables=new VHash; | VHash* vtables=new VHash; |
| result.headers->put(HTTP_TABLES_NAME, vtables); | result.headers->put("tables", vtables); |
| Charset* real_remote_charset=0; // undetected, yet | |
| if(headers_end_at) { | if (!real_remote_charset && !response.headers.content_type.is_empty()) |
| *headers_end_at=0; | real_remote_charset=detect_charset(response.headers.content_type.cstr()); |
| const String header_block(String::C(response, headers_end_at-response), true); | |
| ArrayString aheaders; | |
| HashStringValue& tables=vtables->hash(); | |
| size_t pos_after=0; | if(as_text) |
| header_block.split(aheaders, pos_after, "\n"); | real_remote_charset=pa_charsets.checkBOM(raw_body, raw_body_size, real_remote_charset); |
| //processing headers | |
| size_t aheaders_count=aheaders.count(); | |
| for(size_t i=1; i<aheaders_count; i++) { | |
| const String& line=*aheaders.get(i); | |
| size_t pos=line.pos(':'); | |
| if(pos==STRING_NOT_FOUND || pos<1) | |
| throw Exception("http.response", | |
| &connect_string, | |
| "bad response from host - bad header \"%s\"", line.cstr()); | |
| const String::Body HEADER_NAME= | |
| line.mid(0, pos).change_case(charsets.source(), String::CC_UPPER); | |
| const String& header_value=line.mid(pos+1, line.length()).trim(String::TRIM_BOTH, " \t\r"); | |
| if(as_text && HEADER_NAME=="CONTENT-TYPE") | |
| real_remote_charset=detect_charset(charsets.source(), header_value); | |
| // tables | |
| { | |
| Value *valready=(Value *)tables.get(HEADER_NAME); | |
| bool existed=valready!=0; | |
| Table *table; | |
| if(existed) { | |
| // second+ appearence | |
| table=valready->get_table(); | |
| } else { | |
| // first appearence | |
| Table::columns_type columns =new ArrayString(1); | |
| *columns+=new String("value"); | |
| table=new Table(columns); | |
| } | |
| // this string becomes next row | |
| ArrayString& row=*new ArrayString(1); | |
| row+=&header_value; | |
| *table+=&row; | |
| // not existed before? add it | |
| if(!existed) | |
| tables.put(HEADER_NAME, new VTable(table)); | |
| } | |
| result.headers->put(HEADER_NAME, new VString(header_value)); | if (!real_remote_charset) |
| } | real_remote_charset=asked_remote_charset; // never null |
| for(Array_iterator<HTTP_Headers::Header> i(response.headers.headers); i.has_next(); ){ | |
| HTTP_Headers::Header header=i.next(); | |
| header.transcode(*real_remote_charset, r.charsets.source()); | |
| String &header_value=*new String(header.value, String::L_TAINTED); | |
| tables_update(vtables->hash(), header.name, header_value); | |
| result.headers->put(header.name, new VString(header_value)); | |
| } | } |
| // filling $.cookies | |
| if(vcookies=vtables->hash().get("SET-COOKIE")) | |
| result.headers->put(HTTP_COOKIES_NAME, new VTable(parse_cookies(r, vcookies->get_table()))); | |
| // output response | // output response |
| String::C real_body=String::C(raw_body, raw_body_size); | String::C real_body=String::C(raw_body, raw_body_size); |
| if(as_text && raw_body_size) { // must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below | |
| // defaulting to used-asked charset [it's never empty!] | if(as_text && transcode_text_result && raw_body_size) { // raw_body_size must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below |
| if(!real_remote_charset) | real_body=Charset::transcode(real_body, *real_remote_charset, r.charsets.source()); |
| real_remote_charset=asked_remote_charset; | |
| real_body=Charset::transcode(real_body, *real_remote_charset, charsets.source()); | |
| } | } |
| result.str=const_cast<char *>(real_body.str); // hacking a little | result.str=const_cast<char *>(real_body.str); // hacking a little |
| result.length=real_body.length; | result.length=real_body.length; |
| if(as_text && result.length) | |
| fix_line_breaks(result.str, result.length); | |
| result.headers->put(file_status_name, new VInt(status_code)); | result.headers->put(file_status_name, new VInt(status_code)); |
| return result; | return result; |
| } | } |
| /* ********************** httpd *************************** */ | |
| #ifdef HTTPD_DEBUG | |
| void pa_log(const char* fmt, ...); | |
| #define LOG(action) action | |
| #else | |
| #define LOG(action) | |
| #endif | |
| enum EscapeState { | |
| Initial, | |
| Default, | |
| EscapeFirst, | |
| EscapeSecond | |
| }; | |
| static bool check_uri(const char *uri){ | |
| EscapeState state=Initial; | |
| uint escapedValue; | |
| const char *pattern="/../"; | |
| const char *pos=pattern; | |
| while(*uri){ | |
| uchar c=(uchar)*(uri++); | |
| switch(state) { | |
| case Initial: | |
| if(c!='/') | |
| return false; | |
| state=Default; | |
| break; | |
| case Default: | |
| if(c=='%'){ | |
| state=EscapeFirst; | |
| continue; | |
| } | |
| if(c=='?') | |
| return true; | |
| break; | |
| case EscapeFirst: | |
| if(isxdigit(c)){ | |
| state=EscapeSecond; | |
| escapedValue=hex_value[c] << 4; | |
| continue; | |
| } | |
| return false; | |
| case EscapeSecond: | |
| if(isxdigit(c)){ | |
| state=Default; | |
| c=(uchar)(escapedValue + hex_value[c]); | |
| // implementing Apache AllowEncodedSlashes Off just in case | |
| if(c=='/' || c=='\\') | |
| return false; | |
| break; | |
| } | |
| return false; | |
| } | |
| if(c==*pos || c=='\\' && *pos=='/'){ | |
| if(!*(++pos)) | |
| return false; | |
| } else { | |
| pos=pattern; | |
| } | |
| } | |
| return true; | |
| } | |
| class HTTPD_request : public HTTP_response { | |
| public: | |
| const char *method; | |
| const char *uri; | |
| HTTPD_request() : HTTP_response(), method(NULL), uri(NULL){}; | |
| ssize_t pa_recv(int sockfd, char *buf, size_t len); | |
| bool read(int sock, size_t size){ | |
| if(length + size > buf_size) | |
| resize(buf_size * 2 + size); | |
| ssize_t received_size=pa_recv(sock, buf + length, size); | |
| if(received_size == 0) | |
| return false; | |
| if(received_size < 0) { | |
| if(int no = pa_socks_errno()) | |
| throw Exception("httpd.read", 0, "error receiving request: %s (%d)", pa_socks_strerr(no), no); | |
| return false; | |
| } | |
| length+=received_size; | |
| buf[length]='\0'; | |
| return true; | |
| } | |
| 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); | |
| if(!check_uri(uri)) | |
| throw Exception("httpd.request", 0, "invalid uri '%s'", uri); | |
| return str_upper(method_line, uri_start-method_line); | |
| } | |
| bool read_header(int); | |
| size_t read_post(int, char *, size_t); | |
| }; | |
| enum HTTPD_request_state { | |
| HTTPD_METHOD, | |
| HTTPD_HEADERS | |
| }; | |
| ssize_t HTTPD_request::pa_recv(int sockfd, char *buffer, size_t len){ | |
| LOG(pa_log("httpd [%d] recv %d appending to %d ...", sockfd, len, length)); | |
| if(HTTPD_Server::mode == HTTPD_Server::MULTITHREADED){ | |
| ssize_t result=recv(sockfd, buffer, len, 0); | |
| LOG(pa_log("httpd [%d] recv got %d bytes", sockfd, result)); | |
| return result; | |
| } | |
| #ifdef PA_USE_ALARM | |
| signal(SIGALRM, timeout_handler); | |
| if(sigsetjmp(timeout_env, 1)) { | |
| LOG(pa_log("httpd [%d] recv got %d sec timeout", sockfd, pa_httpd_timeout)); | |
| if(length) // timeout on "void" connection is normal | |
| throw Exception("httpd.timeout", 0, "timeout occurred while receiving request"); | |
| return 0; | |
| } else | |
| #endif | |
| { | |
| ALARM(pa_httpd_timeout); | |
| ssize_t result=recv(sockfd, buffer, len, 0); | |
| ALARM(0); | |
| LOG(pa_log("httpd [%d] recv got %d bytes", sockfd, result)); | |
| LOG(pa_log("httpd [%d] %s", sockfd, buffer)); | |
| return result; | |
| } | |
| } | |
| bool 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 true; | |
| } | |
| } | |
| } | |
| if(!length){ // browsers open connections in advance and they will be empty unless user requests more pages | |
| LOG(pa_log("httpd [%d] void request", sock)); | |
| return false; | |
| } | |
| 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; | |
| } | |
| return true; | |
| } | |
| 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 + body_offset, total_read); | |
| while (total_read < max_bytes){ | |
| ssize_t received_size = pa_recv(sock, body + total_read, max_bytes - total_read); | |
| if(received_size == 0) | |
| return total_read; | |
| if(received_size < 0) { | |
| if(int no = pa_socks_errno()) | |
| throw Exception("httpd.read", 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; | |
| } | |
| bool HTTPD_Connection::read_header(){ | |
| request = new HTTPD_request(); | |
| bool result = request->read_header(sock); | |
| LOG(if(result){ | |
| pa_log("httpd [%d] got %s \"%s\"", sock, method(), uri()); | |
| }) | |
| return result; | |
| } | |
| 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) { | |
| LOG(pa_log("httpd [%d] response %d bytes", sock, size)); | |
| LOG(pa_log("httpd [%d] %s", sock, buf)); | |
| if(send(sock, (const char*)buf, size, 0) != (ssize_t)size) { | |
| int no=pa_socks_errno(); | |
| throw Exception("httpd.write", 0, "error sending response: %s (%d)", pa_socks_strerr(no), no); | |
| } | |
| return size; | |
| } | |
| HTTPD_Connection::~HTTPD_Connection(){ | |
| if(sock != -1){ | |
| LOG(pa_log("httpd [%d] closed", sock)); | |
| 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)); | |
| LOG(pa_log("httpd [%d] accepted from %s", sock, remote_addr)); | |
| return true; | |
| } | |
| HTTPD_Server::HTTPD_MODE HTTPD_Server::mode = HTTPD_Server::SEQUENTIAL; | |
| void HTTPD_Server::set_mode(const String &value){ | |
| if(value == "sequental") mode = SEQUENTIAL; | |
| #ifdef HAVE_TLS | |
| else if (value == "threaded") mode = MULTITHREADED; | |
| #endif | |
| #ifdef _MSC_VER | |
| else throw Exception("httpd.mode", &value, "$main:HTTPD.mode must be 'sequental' or 'threaded'"); | |
| #else | |
| else if (value == "parallel") mode = PARALLEL; | |
| else throw Exception("httpd.mode", &value, "$main:HTTPD.mode must be 'sequental', 'parallel' or 'threaded'"); | |
| #endif | |
| } | |
| 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, (short)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; | |
| } |