Annotation of parser3/src/main/pa_http.C, revision 1.139
1.1 paf 1: /** @file
2: Parser: http support functions.
3:
1.135 moko 4: Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com)
1.121 moko 5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
1.1 paf 6: */
7:
8: #include "pa_http.h"
9: #include "pa_common.h"
1.81 moko 10: #include "pa_base64.h"
1.1 paf 11: #include "pa_charsets.h"
12: #include "pa_request_charsets.h"
1.22 misha 13: #include "pa_vfile.h"
14: #include "pa_random.h"
1.1 paf 15:
1.139 ! moko 16: volatile const char * IDENT_PA_HTTP_C="$Id: pa_http.C,v 1.138 2026/10/10 21:51:21 moko Exp $" IDENT_PA_HTTP_H;
1.53 moko 17:
1.1 paf 18: // defines
19:
1.19 misha 20: #define HTTP_METHOD_NAME "method"
21: #define HTTP_FORM_NAME "form"
22: #define HTTP_BODY_NAME "body"
23: #define HTTP_TIMEOUT_NAME "timeout"
24: #define HTTP_HEADERS_NAME "headers"
1.22 misha 25: #define HTTP_FORM_ENCTYPE_NAME "enctype"
1.19 misha 26: #define HTTP_ANY_STATUS_NAME "any-status"
1.59 moko 27: #define HTTP_OMIT_POST_CHARSET_NAME "omit-post-charset" // ^file::load[...;http://...;$.method[post]] by default adds charset to content-type
1.12 misha 28:
1.1 paf 29: #define HTTP_USER "user"
30: #define HTTP_PASSWORD "password"
31:
1.70 moko 32: #define HTTP_USER_AGENT "user-agent"
1.1 paf 33: #define DEFAULT_USER_AGENT "parser3"
34:
1.59 moko 35: #ifndef INADDR_NONE
36: #define INADDR_NONE ((ulong) -1)
37: #endif
1.1 paf 38:
39: #undef CRLF
40: #define CRLF "\r\n"
41:
1.138 moko 42: #define HTTP_TIMEOUT_COMMENT "timeout occurred while retrieving document"
43:
1.54 misha 44: // helpers
1.56 misha 45:
1.130 moko 46: #ifdef HTTPD_DEBUG
47: void pa_log(const char* fmt, ...);
48: #define LOG(action) action
49: #else
50: #define LOG(action)
51: #endif
52:
53: ssize_t pa_send(int sock, const char *buffer, size_t len){
54: size_t total_sent = 0;
55: while (total_sent < len) {
56: ssize_t bytes_sent=send(sock, buffer + total_sent, len - total_sent, 0);
57: if (bytes_sent < 0) {
58: return bytes_sent;
59: } else if (bytes_sent == 0) {
60: // Connection closed by the remote peer?
61: break;
62: }
63: LOG(
64: if(bytes_sent != len - total_sent)
65: pa_log("httpd [%d] partial send %d of (%d)", sock, bytes_sent, len - total_sent)
66: );
67: total_sent += bytes_sent;
68: }
69: return total_sent;
70: }
71:
1.138 moko 72: // socket operation failed on SO_*TIMEO timeout
73: static bool sock_timed_out(int no){
74: #ifdef WIN32
75: return no==WSAETIMEDOUT;
76: #else
77: return no==EAGAIN || no==EWOULDBLOCK || no==EINPROGRESS /* connect on linux */;
78: #endif
79: }
80:
81: static int check_socket_timeout(int no){
82: if(sock_timed_out(no))
83: throw Exception("http.timeout", 0, HTTP_TIMEOUT_COMMENT);
84: return no;
85: }
86:
1.85 moko 87: bool HTTP_Headers::add_header(const char *line){
1.78 moko 88: const char *value=strchr(line, ':');
89:
90: if(value && value != line){ // we need only headers, not the response code
1.134 moko 91: Header header = Header(String::Body(str_upper(line, value-line)), String::Body(value+1).trim(String::TRIM_BOTH, " \t\n\r"));
1.78 moko 92:
93: if(header.name == String::Body(HTTP_CONTENT_TYPE_UPPER) && content_type.is_empty())
94: content_type=header.value;
95:
96: if(header.name == String::Body("CONTENT-LENGTH") && content_length==0)
1.95 moko 97: ALTER_EXCEPTION_COMMENT(content_length=pa_atoul(header.value.cstr()), " for content-length");
1.78 moko 98:
99: headers+=header;
100:
101: return true;
102: }
103: return false;
104: }
105:
1.54 misha 106: class Cookies_table_template_columns: public ArrayString {
107: public:
108: Cookies_table_template_columns() {
109: *this+=new String("name");
110: *this+=new String("value");
111: *this+=new String("expires");
112: *this+=new String("max-age");
113: *this+=new String("domain");
114: *this+=new String("path");
115: *this+=new String("httponly");
116: *this+=new String("secure");
117: }
118: };
119:
120:
1.1 paf 121: static bool set_addr(struct sockaddr_in *addr, const char* host, const short port){
1.22 misha 122: memset(addr, 0, sizeof(*addr));
123: addr->sin_family=AF_INET;
124: addr->sin_port=htons(port);
125: if(host) {
1.65 moko 126: struct hostent *hostIP=gethostbyname(host);
127: if(hostIP && hostIP->h_addrtype == AF_INET){
128: memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length);
129: return true;
130: }
131: }
132: return false;
1.1 paf 133: }
134:
1.84 moko 135: class HTTP_response : public PA_Allocated {
1.78 moko 136: public:
137: char *buf;
138: size_t length;
139: size_t buf_size;
140: size_t body_offset;
141:
1.85 moko 142: HTTP_Headers headers;
1.78 moko 143:
1.97 moko 144: HTTP_response() : buf(NULL), length(0), buf_size(0), body_offset(0){}
1.78 moko 145:
146: void resize(size_t size){
147: buf_size=size;
148: buf=(char *)pa_realloc(buf, size + 1);
149: }
150:
1.120 moko 151: bool read(SOCKET sock, size_t size){
1.103 moko 152: if(length + size > buf_size)
153: resize(buf_size * 2 + size);
1.78 moko 154: ssize_t received_size=recv(sock, buf + length, size, 0);
1.103 moko 155: if(received_size == 0)
1.78 moko 156: return false;
1.103 moko 157: if(received_size < 0) {
1.138 moko 158: if(int no = check_socket_timeout(pa_socks_errno()))
1.102 moko 159: throw Exception("http.timeout", 0, "error receiving response: %s (%d)", pa_socks_strerr(no), no);
1.78 moko 160: return false;
161: }
162: length+=received_size;
163: buf[length]='\0';
164: return true;
165: }
166:
1.83 moko 167: size_t first_line(){
1.89 moko 168: char *header=strchr(buf, '\n');
169: if(!header)
1.78 moko 170: return false;
171:
1.89 moko 172: return header-buf;
1.78 moko 173: }
174:
175: const char *status_code(char *status_line, int &result){
176: char* status_start = strchr(status_line, ' ');
177:
178: if(!(status_start++))
179: return status_line;
180:
181: char* status_end=strchr(status_start, ' ');
182:
183: if(!status_end)
184: return status_line;
185:
186: if(status_end==status_start)
187: return status_line;
1.1 paf 188:
1.78 moko 189: const char *result_str=pa_strdup(status_start, status_end-status_start);
1.95 moko 190: ALTER_EXCEPTION_COMMENT(result=pa_atoui(result_str), " for HTTP status");
1.78 moko 191: return result_str;
192: }
1.2 paf 193:
1.78 moko 194: bool body_start(){
195: char *p=buf;
196: while((p=strchr(p, '\n'))) {
197: if(p[1]=='\r' && p[2]=='\n'){ // \r\n\r\n
198: *p='\0';
199: body_offset=p-buf+3;
200: return true;
201: }
202: if(p[1]=='\n') { // \n\n
203: *p='\0';
204: body_offset=p-buf+2;
205: return true;
206: }
207: p++;
208: }
209: return false;
1.2 paf 210: }
1.78 moko 211:
212: void parse_headers(){
213: const String header_block(buf, String::L_TAINTED);
214:
215: ArrayString aheaders;
216: header_block.split(aheaders, 0, "\n");
217:
1.124 moko 218: ArrayString::Iterator i(aheaders);
1.78 moko 219: i.next(); // skipping status
1.125 moko 220: for(;i;){
1.78 moko 221: const char *line=i.next()->cstr();
222: if(!headers.add_header(line))
1.97 moko 223: throw Exception("http.response", 0, "bad response from host - bad header \"%s\"", line);
1.78 moko 224: }
1.1 paf 225: }
226:
1.120 moko 227: int read_response(SOCKET sock, bool fail_on_status_ne_200);
1.78 moko 228: };
229:
230: enum HTTP_response_state {
231: HTTP_STATUS_CODE,
232: HTTP_HEADERS,
233: HTTP_BODY
234: };
235:
1.120 moko 236: int HTTP_response::read_response(SOCKET sock, bool fail_on_status_ne_200) {
1.78 moko 237: HTTP_response_state state=HTTP_STATUS_CODE;
238: int result=0;
239:
240: size_t chunk_size=0x400*16;
1.88 moko 241: resize(2*chunk_size);
1.78 moko 242:
1.88 moko 243: while(read(sock, chunk_size)){
1.78 moko 244: switch(state){
245: case HTTP_STATUS_CODE: {
1.88 moko 246: size_t status_size=first_line();
1.78 moko 247: if(!status_size)
248: break;
249:
1.88 moko 250: const char *status=status_code(pa_strdup(buf, status_size), result);
1.78 moko 251:
252: if(!result || fail_on_status_ne_200 && result!=200)
253: throw Exception("http.status", status ? new String(status) : &String::Empty, "invalid HTTP response status");
254:
255: state=HTTP_HEADERS;
256: }
257:
258: case HTTP_HEADERS: {
1.88 moko 259: if(!body_start())
1.78 moko 260: break;
261:
1.88 moko 262: parse_headers();
1.78 moko 263:
1.97 moko 264: size_t content_length=check_file_size(headers.content_length, 0);
1.88 moko 265: if(content_length>0 && (content_length + body_offset) > length){
266: resize(content_length + body_offset + 0x400*64);
1.78 moko 267: }
268:
269: state=HTTP_BODY;
1.1 paf 270: break;
271: }
1.78 moko 272:
273: case HTTP_BODY: {
274: chunk_size=0x400*64;
1.1 paf 275: break;
276: }
277: }
278: }
1.78 moko 279:
280: if(state==HTTP_STATUS_CODE)
1.97 moko 281: throw Exception("http.response", 0, "bad response from host - no status found (size=%u)", length);
1.78 moko 282:
283: if(state==HTTP_HEADERS){
1.88 moko 284: parse_headers();
285: body_offset=length;
1.1 paf 286: }
1.78 moko 287:
288: return result;
1.1 paf 289: }
290:
291: /* ********************** request *************************** */
292:
293: #if defined(SIGALRM) && defined(HAVE_SIGSETJMP) && defined(HAVE_SIGLONGJMP)
1.138 moko 294: # define PA_HAVE_ALARM
1.1 paf 295: #endif
296:
1.138 moko 297: #ifdef PA_HAVE_ALARM
1.1 paf 298: static sigjmp_buf timeout_env;
299: static void timeout_handler(int /*sig*/){
1.101 moko 300: siglongjmp(timeout_env, 1);
1.1 paf 301: }
1.118 moko 302:
1.138 moko 303: // alarm is per process, threads use SO_*TIMEO
304: #define PA_USE_ALARM (HTTPD_Server::mode != HTTPD_Server::MULTITHREADED)
1.118 moko 305:
1.138 moko 306: #define ALARM(value) if(PA_USE_ALARM) alarm(value)
1.101 moko 307: #else
1.138 moko 308: #define PA_USE_ALARM false
1.101 moko 309: #define ALARM(value)
1.1 paf 310: #endif
311:
1.138 moko 312: // SO_*TIMEO can be defined in .h but not implemented in protocol, so errors are ignored
313: static void set_socket_timeout(SOCKET sock, int option, int timeout_secs){
314: #ifdef WIN32
315: int timeout=timeout_secs < INT_MAX/1000 ? timeout_secs*1000 : 0 /* infinite */;
316: #else
317: struct timeval timeout={timeout_secs, 0};
318: #endif
319: setsockopt(sock, SOL_SOCKET, option, (const char*)&timeout, sizeof(timeout));
320: }
321:
1.78 moko 322: 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) {
1.1 paf 323: if(!host)
1.73 moko 324: throw Exception("http.host", 0, "zero hostname"); //never
1.1 paf 325:
1.120 moko 326: volatile SOCKET sock=INVALID_SOCKET; // to prevent makeing it register variable, because it will be clobbered by longjmp [thanks gcc warning]
1.101 moko 327:
1.138 moko 328: #ifdef PA_HAVE_ALARM
329: if(PA_USE_ALARM) signal(SIGALRM, timeout_handler);
330: if(PA_USE_ALARM && sigsetjmp(timeout_env, 1)) {
1.101 moko 331: // duplicating closesocket to make code more simple for old compilers
1.120 moko 332: if(sock != INVALID_SOCKET)
1.101 moko 333: closesocket(sock);
1.138 moko 334: throw Exception("http.timeout", 0, HTTP_TIMEOUT_COMMENT);
1.1 paf 335: return 0; // never
1.101 moko 336: } else
1.1 paf 337: #endif
1.101 moko 338: {
339: ALARM(timeout_secs);
1.1 paf 340: try {
341: int result;
342: struct sockaddr_in dest;
343:
344: if(!set_addr(&dest, host, port))
1.127 moko 345: throw Exception("http.host", 0, "cannot resolve hostname \"%s\"", host);
1.1 paf 346:
1.120 moko 347: if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/)) == INVALID_SOCKET) {
1.1 paf 348: int no=pa_socks_errno();
1.127 moko 349: throw Exception("http.connect", 0, "cannot make socket: %s (%d)", pa_socks_strerr(no), no);
1.1 paf 350: }
351:
352: // To enable SO_DONTLINGER (that is, disable SO_LINGER)
353: // l_onoff should be set to zero and setsockopt should be called
354: linger dont_linger={0,0};
355: setsockopt(sock, SOL_SOCKET, SO_LINGER, (const char *)&dont_linger, sizeof(dont_linger));
356:
1.138 moko 357: if(!PA_USE_ALARM){
358: set_socket_timeout(sock, SO_SNDTIMEO, timeout_secs);
359: set_socket_timeout(sock, SO_RCVTIMEO, timeout_secs);
360: }
1.1 paf 361:
362: if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) {
1.138 moko 363: int no=check_socket_timeout(pa_socks_errno());
1.127 moko 364: throw Exception("http.connect", 0, "cannot connect to host \"%s\": %s (%d)", host, pa_socks_strerr(no), no);
1.1 paf 365: }
1.22 misha 366:
1.130 moko 367: if(pa_send(sock, request, request_size) < 0) {
1.138 moko 368: int no=check_socket_timeout(pa_socks_errno());
1.78 moko 369: throw Exception("http.timeout", 0, "error sending request: %s (%d)", pa_socks_strerr(no), no);
1.1 paf 370: }
371:
1.88 moko 372: result=response.read_response(sock, fail_on_status_ne_200);
1.78 moko 373: closesocket(sock);
1.101 moko 374: ALARM(0);
1.1 paf 375: return result;
376: } catch(...) {
1.101 moko 377: ALARM(0);
1.120 moko 378: if(sock != INVALID_SOCKET)
1.78 moko 379: closesocket(sock);
1.1 paf 380: rethrow;
381: }
382: }
383: }
384:
385: #ifndef DOXYGEN
386: struct Http_pass_header_info {
387: Request_charsets* charsets;
388: String* request;
1.35 misha 389: bool* user_agent_specified;
390: bool* content_type_specified;
391: bool* content_type_url_encoded;
1.1 paf 392: };
393: #endif
1.50 moko 394:
395: char *pa_http_safe_header_name(const char *name) {
396: char *result=pa_strdup(name);
397: char *n=result;
1.52 misha 398: if(!pa_isalpha((unsigned char)*n))
1.50 moko 399: *n++ = '_';
400: for(; *n; ++n) {
1.52 misha 401: if (!pa_isalnum((unsigned char)*n) && *n != '-' && *n != '_')
1.50 moko 402: *n = '_';
403: }
404: return result;
405: }
406:
1.101 moko 407: static void http_pass_header(HashStringValue::key_type aname, HashStringValue::value_type avalue, Http_pass_header_info *info) {
1.9 misha 408:
1.41 misha 409: const char* name_cstr=aname.cstr();
410:
1.38 misha 411: if(strcasecmp(name_cstr, HTTP_CONTENT_LENGTH)==0)
412: return;
413:
1.50 moko 414: String name=String(pa_http_safe_header_name(capitalize(name_cstr)), String::L_AS_IS);
415: String value=attributed_meaning_to_string(*avalue, String::L_HTTP_HEADER, true);
1.9 misha 416:
1.35 misha 417: *info->request << name << ": " << value << CRLF;
1.1 paf 418:
1.38 misha 419: if(strcasecmp(name_cstr, HTTP_USER_AGENT)==0)
1.35 misha 420: *info->user_agent_specified=true;
1.38 misha 421: if(strcasecmp(name_cstr, HTTP_CONTENT_TYPE)==0){
1.35 misha 422: *info->content_type_specified=true;
1.62 moko 423: *info->content_type_url_encoded=pa_strncasecmp(value.cstr(), HTTP_CONTENT_TYPE_FORM_URLENCODED)==0;
1.35 misha 424: }
1.1 paf 425: }
426:
1.10 misha 427: static void http_pass_cookie(HashStringValue::key_type name,
1.20 misha 428: HashStringValue::value_type value,
429: Http_pass_header_info *info) {
1.10 misha 430:
1.17 misha 431: *info->request << String(name, String::L_HTTP_COOKIE) << "="
1.31 misha 432: << attributed_meaning_to_string(*value, String::L_HTTP_COOKIE, true)
1.10 misha 433: << "; ";
434:
435: }
1.1 paf 436:
437: static const String* basic_authorization_field(const char* user, const char* pass) {
438: if(!user&& !pass)
439: return 0;
440:
441: String combined;
442: if(user)
443: combined<<user;
444: combined<<":";
445: if(pass)
446: combined<<pass;
447:
1.20 misha 448: String* result=new String("Basic ");
1.82 moko 449: *result<<pa_base64_encode(combined.cstr(), combined.length(), Base64Options(false /*no wrap*/));
1.1 paf 450: return result;
451: }
452:
1.73 moko 453: static void form_string_value2string(HashStringValue::key_type key, const String& value, String& result) {
1.30 misha 454: result << String(key, String::L_URI) << "=" << String(value, String::L_URI) << "&";
1.1 paf 455: }
1.20 misha 456:
1.1 paf 457: #ifndef DOXYGEN
458: struct Form_table_value2string_info {
459: HashStringValue::key_type key;
460: String& result;
461:
462: Form_table_value2string_info(HashStringValue::key_type akey, String& aresult):
463: key(akey), result(aresult) {}
464: };
465: #endif
466: static void form_table_value2string(Table::element_type row, Form_table_value2string_info* info) {
467: form_string_value2string(info->key, *row->get(0), info->result);
468: }
1.73 moko 469:
470: static void form_value2string(HashStringValue::key_type key, HashStringValue::value_type value, String* result) {
1.1 paf 471: if(const String* svalue=value->get_string())
472: form_string_value2string(key, *svalue, *result);
473: else if(Table* tvalue=value->get_table()) {
474: Form_table_value2string_info info(key, *result);
475: tvalue->for_each(form_table_value2string, &info);
476: } else
1.73 moko 477: throw Exception(PARSER_RUNTIME, new String(key, String::L_TAINTED),
1.63 moko 478: "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());
1.1 paf 479: }
1.20 misha 480:
1.5 misha 481: const char* pa_form2string(HashStringValue& form, Request_charsets& charsets) {
1.1 paf 482: String string;
1.3 paf 483: form.for_each<String*>(form_value2string, &string);
1.44 misha 484: return string.untaint_and_transcode_cstr(String::L_URI, &charsets);
1.1 paf 485: }
1.22 misha 486:
487: struct FormPart {
488: Request* r;
489: const char* boundary;
1.48 moko 490: String* string;
1.22 misha 491: Form_table_value2string_info* info;
1.48 moko 492:
493: struct BinaryBlock{
494: const char* ptr;
495: size_t length;
496:
497: BinaryBlock(String* astring, Request* r): ptr(astring->untaint_and_transcode_cstr(String::L_AS_IS, &r->charsets)), length(strlen(ptr)){}
498: BinaryBlock(const char* aptr, size_t alength): ptr(aptr), length(alength){}
499: };
500:
501: Array<BinaryBlock> blocks;
502:
503: FormPart(Request* ar, const char* aboundary): r(ar), boundary(aboundary), string(new String()){}
504:
505: const char *post(size_t &length){
506: if(blocks.count()){
507: blocks+=BinaryBlock(string, r);
508:
509: length=0;
510: for(size_t i=0; i<blocks.count(); i++)
511: length+=blocks[i].length;
512:
513: char *result=(char *)pa_malloc_atomic(length);
514: char *ptr=result;
515:
516: for(size_t i=0; i<blocks.count(); i++){
517: memcpy(ptr, blocks[i].ptr, blocks[i].length);
518: ptr+=blocks[i].length;
519: }
520:
521: return result;
522: } else {
523: BinaryBlock result(string, r);
524: length=result.length;
525: return result.ptr;
526: }
527: }
1.22 misha 528: };
529:
1.73 moko 530: static void form_part_boundary_header(FormPart& part, String::Body name, const char* file_name=0) {
531: *part.string << "--" << part.boundary << CRLF CONTENT_DISPOSITION_CAPITALIZED ": form-data; name=\"" << name << "\"";
1.22 misha 532: if(file_name){
533: if(strcmp(file_name, NONAME_DAT)!=0)
1.48 moko 534: *part.string << "; filename=\"" << file_name << "\"";
535: *part.string << CRLF HTTP_CONTENT_TYPE_CAPITALIZED ": " << part.r->mime_type_of(file_name);
1.22 misha 536: }
1.48 moko 537: *part.string << CRLF CRLF;
1.22 misha 538: }
539:
1.73 moko 540: static void form_string_value2part(HashStringValue::key_type key, const String& value, FormPart& part) {
1.28 misha 541: form_part_boundary_header(part, key);
1.48 moko 542: *part.string << value << CRLF;
1.22 misha 543: }
544:
1.73 moko 545: static void form_file_value2part(HashStringValue::key_type key, VFile& vfile, FormPart& part) {
1.28 misha 546: form_part_boundary_header(part, key, vfile.fields().get(name_name)->as_string().cstr());
1.48 moko 547: part.blocks+=FormPart::BinaryBlock(part.string, part.r);
548: part.blocks+=FormPart::BinaryBlock(vfile.value_ptr(), vfile.value_size());
549: part.string=new String();
550: *part.string << CRLF;
1.22 misha 551: }
552:
553: static void form_table_value2part(Table::element_type row, FormPart* part) {
554: form_string_value2part(part->info->key, *row->get(0), *part);
555: }
556:
1.136 moko 557: static bool form_element_value2part(HashStringValue::key_type key, HashStringValue::value_type value, FormPart& part) {
558: if(const String* svalue=value->get_string()){
559: form_string_value2part(key, *svalue, part);
560: } else if(VFile* vfile=dynamic_cast<VFile *>(value)){
561: form_file_value2part(key, *vfile, part);
562: } else {
563: return false;
564: }
565: return true;
566: }
567:
1.73 moko 568: static void form_value2part(HashStringValue::key_type key, HashStringValue::value_type value, FormPart& part) {
1.136 moko 569: if(form_element_value2part(key, value, part)) {
570: // string or file
571: } else if(Table* tvalue=value->get_table()) {
1.48 moko 572: Form_table_value2string_info info(key, *part.string);
1.22 misha 573: part.info = &info;
574: tvalue->for_each(form_table_value2part, &part);
1.136 moko 575: } else if(HashStringValue* hvalue=value->get_hash()){
576: // hash or array: several strings/files under the same field name
577: for(HashStringValue::Iterator j(*hvalue); j; j.next())
578: if(!form_element_value2part(key, j.value(), part))
579: throw Exception(PARSER_RUNTIME, new String(j.key(), String::L_TAINTED), "is %s, multiple values of " HTTP_FORM_NAME " field '%s' must be strings or files", j.value()->type(), key.cstr());
1.22 misha 580: } else
1.136 moko 581: throw Exception(PARSER_RUNTIME, new String(key, String::L_TAINTED), "is %s, " HTTP_FORM_NAME " field value can be string, table, file, hash or array", value->type());
1.22 misha 582: }
583:
584: const char* pa_form2string_multipart(HashStringValue& form, Request& r, const char* boundary, size_t& post_size){
1.48 moko 585: FormPart formpart(&r, boundary);
1.22 misha 586: form.for_each<FormPart&>(form_value2part, formpart);
1.48 moko 587: *formpart.string << "--" << boundary << "--";
588: // @todo: return binary blocks here to save memory in pa_internal_file_read_http
589: return formpart.post(post_size);
1.22 misha 590: }
591:
1.54 misha 592: // Set-Cookie: name=value; Domain=docs.foo.com; Path=/accounts; Expires=Wed, 13-Jan-2021 22:23:01 GMT; Secure; HttpOnly
593: static ArrayString* parse_cookie(Request& r, const String& cookie) {
1.64 moko 594: char *current=pa_strdup(cookie.cstr());
1.54 misha 595:
596: const String* name=0;
1.55 moko 597: const String* value=&String::Empty;
598: const String* expires=&String::Empty;
599: const String* max_age=&String::Empty;
600: const String* path=&String::Empty;
601: const String* domain=&String::Empty;
602: const String* httponly=&String::Empty;
603: const String* secure=&String::Empty;
1.54 misha 604:
605: bool first_pair=true;
606:
607: do {
608: if(char *meaning=search_stop(current, ';'))
609: if(char *attribute=search_stop(meaning, '=')) {
610: const String* sname=new String(unescape_chars(attribute, strlen(attribute), &r.charsets.source(), true/*don't convert '"' to space*/), String::L_TAINTED);
611: const String* smeaning=0;
612: if(meaning)
613: smeaning=new String(unescape_chars(meaning, strlen(meaning), &r.charsets.source(), true/*don't convert '"' to space*/), String::L_TAINTED);
614:
615: if(first_pair) {
616: // name + value
617: name=sname;
1.122 moko 618: if(smeaning)
619: value=smeaning;
1.54 misha 620: first_pair=false;
621: } else {
622: const String& slower=sname->change_case(r.charsets.source(), String::CC_LOWER);
623:
624: if(slower == "expires")
625: expires=smeaning;
626: else if(slower == "max-age")
627: max_age=smeaning;
628: else if(slower == "domain")
629: domain=smeaning;
630: else if(slower == "path")
631: path=smeaning;
632: else if(slower == "httponly")
633: httponly=new String("1", String::L_CLEAN);
634: else if(slower == "secure")
635: secure=new String("1", String::L_CLEAN);
636: else {
637: // todo@ ?
638: }
639: }
640: }
641: } while(current);
642:
643: if(!name)
644: return 0;
645:
646: ArrayString* result=new ArrayString(8);
647: *result+=name;
648: *result+=value;
649: *result+=expires;
650: *result+=max_age;
651: *result+=domain;
652: *result+=path;
653: *result+=httponly;
654: *result+=secure;
655:
656: return result;
657: }
658:
1.56 misha 659: Table* parse_cookies(Request& r, Table *cookies){
660: Table& result=*new Table(new Cookies_table_template_columns);
661:
1.125 moko 662: for(Array_iterator<Table::element_type> i(*cookies); i; )
1.56 misha 663: if(ArrayString* row=parse_cookie(r, *i.next()->get(0)))
664: result+=row;
665:
666: return &result;
667: }
668:
1.75 moko 669: void tables_update(HashStringValue& tables, const String::Body name, const String& value){
1.72 moko 670: Table *table;
671: if(Value *valready=tables.get(name)) {
672: // second+ appearence
673: table=valready->get_table();
674: } else {
675: // first appearence
676: Table::columns_type columns=new ArrayString(1);
677: *columns+=new String("value");
678: table=new Table(columns);
679: tables.put(name, new VTable(table));
680: }
681: // this string becomes next row
682: ArrayString& row=*new ArrayString(1);
683: row+=&value;
684: *table+=&row;
685: }
686:
1.1 paf 687: /// @todo build .cookies field. use ^file.tables.SET-COOKIES.menu{ for now
1.72 moko 688: File_read_http_result pa_internal_file_read_http(Request& r, const String& file_spec, bool as_text, HashStringValue *options, bool transcode_text_result) {
1.1 paf 689: File_read_http_result result;
1.20 misha 690: char host[MAX_STRING];
1.66 moko 691: const char *idna_host;
1.1 paf 692: const char* uri;
1.49 moko 693: short port=80;
1.10 misha 694: const char* method="GET";
1.21 misha 695: bool method_is_get=true;
1.1 paf 696: HashStringValue* form=0;
697: int timeout_secs=2;
698: bool fail_on_status_ne_200=true;
1.12 misha 699: bool omit_post_charset=false;
1.1 paf 700: Value* vheaders=0;
1.10 misha 701: Value* vcookies=0;
1.11 misha 702: Value* vbody=0;
1.72 moko 703: Charset* asked_remote_charset=0;
1.58 moko 704: Charset* real_remote_charset=0;
1.1 paf 705: const char* user_cstr=0;
706: const char* password_cstr=0;
1.22 misha 707: const char* encode=0;
708: bool multipart=false;
1.1 paf 709:
710: if(options) {
711: int valid_options=pa_get_valid_file_options_count(*options);
712:
713: if(Value* vmethod=options->get(HTTP_METHOD_NAME)) {
714: valid_options++;
1.21 misha 715: method=vmethod->as_string().change_case(r.charsets.source(), String::CC_UPPER).cstr();
716: method_is_get=strcmp(method, "GET")==0;
1.1 paf 717: }
1.22 misha 718: if(Value* vencode=options->get(HTTP_FORM_ENCTYPE_NAME)) {
719: valid_options++;
720: encode=vencode->as_string().cstr();
721: }
1.1 paf 722: if(Value* vform=options->get(HTTP_FORM_NAME)) {
723: valid_options++;
724: form=vform->get_hash();
725: }
1.11 misha 726: if(vbody=options->get(HTTP_BODY_NAME)) {
1.1 paf 727: valid_options++;
728: }
729: if(Value* vtimeout=options->get(HTTP_TIMEOUT_NAME)) {
730: valid_options++;
731: timeout_secs=vtimeout->as_int();
732: }
1.11 misha 733: if(vheaders=options->get(HTTP_HEADERS_NAME)) {
1.1 paf 734: valid_options++;
735: }
1.11 misha 736: if(vcookies=options->get(HTTP_COOKIES_NAME)) {
1.10 misha 737: valid_options++;
738: }
1.1 paf 739: if(Value* vany_status=options->get(HTTP_ANY_STATUS_NAME)) {
740: valid_options++;
741: fail_on_status_ne_200=!vany_status->as_bool();
1.12 misha 742: }
1.20 misha 743: if(Value* vomit_post_charset=options->get(HTTP_OMIT_POST_CHARSET_NAME)){
1.12 misha 744: valid_options++;
745: omit_post_charset=vomit_post_charset->as_bool();
746: }
1.6 misha 747: if(Value* vcharset_name=options->get(PA_CHARSET_NAME)) {
1.77 moko 748: asked_remote_charset=&pa_charsets.get(vcharset_name->as_string());
1.58 moko 749: }
750: if(Value* vresponse_charset_name=options->get(PA_RESPONSE_CHARSET_NAME)) {
1.61 moko 751: valid_options++;
1.77 moko 752: real_remote_charset=&pa_charsets.get(vresponse_charset_name->as_string());
1.1 paf 753: }
754: if(Value* vuser=options->get(HTTP_USER)) {
755: valid_options++;
756: user_cstr=vuser->as_string().cstr();
757: }
758: if(Value* vpassword=options->get(HTTP_PASSWORD)) {
759: valid_options++;
760: password_cstr=vpassword->as_string().cstr();
761: }
762:
763: if(valid_options!=options->count())
1.46 misha 764: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 paf 765: }
766: if(!asked_remote_charset) // defaulting to $request:charset
1.22 misha 767: asked_remote_charset=&(r.charsets).source();
768:
769: if(encode){
770: if(method_is_get)
1.127 moko 771: throw Exception(PARSER_RUNTIME, 0, "you cannot use $." HTTP_FORM_ENCTYPE_NAME " option with method GET");
1.22 misha 772:
773: multipart=strcasecmp(encode, HTTP_CONTENT_TYPE_MULTIPART_FORMDATA)==0;
774:
775: if(!multipart && strcasecmp(encode, HTTP_CONTENT_TYPE_FORM_URLENCODED)!=0)
1.72 moko 776: throw Exception(PARSER_RUNTIME, 0, "$." HTTP_FORM_ENCTYPE_NAME " option value can be " HTTP_CONTENT_TYPE_FORM_URLENCODED " or " HTTP_CONTENT_TYPE_MULTIPART_FORMDATA " only");
1.22 misha 777: }
1.1 paf 778:
1.11 misha 779: if(vbody){
780: if(method_is_get)
1.127 moko 781: throw Exception(PARSER_RUNTIME, 0, "you cannot use $." HTTP_BODY_NAME " option with method GET");
1.11 misha 782:
783: if(form)
1.127 moko 784: throw Exception(PARSER_RUNTIME, 0, "you cannot use options $." HTTP_BODY_NAME " and $." HTTP_FORM_NAME " together");
1.11 misha 785: }
1.1 paf 786:
787: //preparing request
1.29 misha 788: String& connect_string=*new String(file_spec);
1.1 paf 789:
1.48 moko 790: const char* request;
791: size_t request_size;
1.1 paf 792: {
793: // influence URLencoding of tainted pieces to String::L_URI lang
1.22 misha 794: Temp_client_charset temp(r.charsets, *asked_remote_charset);
1.1 paf 795:
1.44 misha 796: const char* connect_string_cstr=connect_string.untaint_and_transcode_cstr(String::L_URI, &(r.charsets));
1.1 paf 797:
798: const char* current=connect_string_cstr;
799: if(strncmp(current, "http://", 7)!=0)
1.72 moko 800: throw Exception(PARSER_RUNTIME, &connect_string, "does not start with http://"); //never
1.1 paf 801: current+=7;
802:
1.119 moko 803: pa_strncpy(host, current, sizeof(host));
1.34 misha 804: char* host_uri=lsplit(host, '/');
805: uri=host_uri?current+(host_uri-1-host):"/";
806: char* port_cstr=lsplit(host, ':');
1.49 moko 807:
808: if (port_cstr){
809: char* error_pos=0;
810: port=(short)strtol(port_cstr, &error_pos, 10);
811: if(port==0 || *error_pos)
812: throw Exception(PARSER_RUNTIME, &connect_string, "invalid port number '%s'", port_cstr);
813: }
1.1 paf 814:
1.66 moko 815: idna_host=pa_idna_encode(host, r.charsets.source());
816:
1.11 misha 817: // making request head
1.1 paf 818: String head;
1.11 misha 819: head << method << " " << uri;
1.28 misha 820: if(method_is_get && form)
821: head << (strchr(uri, '?')!=0?"&":"?") << pa_form2string(*form, r.charsets);
1.11 misha 822:
1.66 moko 823: head <<" HTTP/1.0" CRLF "Host: "<< idna_host;
1.49 moko 824: if (port != 80)
825: head << ":" << port_cstr;
826: head << CRLF;
1.11 misha 827:
1.71 moko 828: char* boundary= multipart ? get_uuid_boundary() : 0;
1.22 misha 829:
1.35 misha 830: String user_headers;
831: bool user_agent_specified=false;
832: bool content_type_specified=false;
833: bool content_type_url_encoded=false;
834: if(vheaders && !vheaders->is_string()) { // allow empty
835: if(HashStringValue *headers=vheaders->get_hash()) {
836: Http_pass_header_info info={
837: &(r.charsets),
838: &user_headers,
839: &user_agent_specified,
840: &content_type_specified,
841: &content_type_url_encoded};
842: headers->for_each<Http_pass_header_info*>(http_pass_header, &info);
843: } else
1.72 moko 844: throw Exception(PARSER_RUNTIME, 0, "headers param must be hash");
1.35 misha 845: };
846:
1.48 moko 847: const char* request_body=0;
1.22 misha 848: size_t post_size=0;
849: if(form && !method_is_get) {
1.38 misha 850: head << "Content-Type: " << (multipart ? HTTP_CONTENT_TYPE_MULTIPART_FORMDATA : HTTP_CONTENT_TYPE_FORM_URLENCODED);
1.28 misha 851:
852: if(!omit_post_charset)
853: head << "; charset=" << asked_remote_charset->NAME_CSTR();
854:
1.22 misha 855: if(multipart) {
1.28 misha 856: head << "; boundary=" << boundary;
1.48 moko 857: request_body=pa_form2string_multipart(*form, r/*charsets & mime_type needed*/, boundary, post_size/*correct post_size returned here*/);
1.22 misha 858: } else {
1.48 moko 859: request_body=pa_form2string(*form, r.charsets);
860: post_size=strlen(request_body);
1.22 misha 861: }
1.28 misha 862: head << CRLF;
1.35 misha 863: } else if(vbody) {
1.38 misha 864: // $.body was specified
1.35 misha 865: if(content_type_url_encoded){
1.36 misha 866: // transcode + url-encode
1.48 moko 867: request_body=vbody->as_string().untaint_and_transcode_cstr(String::L_URI, &(r.charsets));
1.35 misha 868: } else {
1.36 misha 869: // content-type != application/x-www-form-urlencoded -> transcode only, don't url-encode!
1.72 moko 870: const String &sbody=vbody->as_string();
871: request_body=Charset::transcode(String::C(sbody.cstr(), sbody.length()), r.charsets.source(), *asked_remote_charset).str;
1.35 misha 872: }
1.48 moko 873: post_size=strlen(request_body);
1.1 paf 874: }
875:
876: // http://www.ietf.org/rfc/rfc2617.txt
877: if(const String* authorization_field_value=basic_authorization_field(user_cstr, password_cstr))
1.38 misha 878: head << "Authorization: " << *authorization_field_value << CRLF;
1.1 paf 879:
1.35 misha 880: head << user_headers;
881:
1.1 paf 882: if(!user_agent_specified) // defaulting
1.38 misha 883: head << "User-Agent: " DEFAULT_USER_AGENT CRLF;
1.1 paf 884:
1.12 misha 885: if(form && !method_is_get && content_type_specified) // POST + form + content-type was specified
1.72 moko 886: throw Exception(PARSER_RUNTIME, 0, "$.content-type can't be specified with method POST");
1.12 misha 887:
1.11 misha 888: if(vcookies && !vcookies->is_string()){ // allow empty
1.10 misha 889: if(HashStringValue* cookies=vcookies->get_hash()) {
1.37 misha 890: head << "Cookie: ";
1.35 misha 891: Http_pass_header_info info={&(r.charsets), &head, 0, 0, 0};
1.10 misha 892: cookies->for_each<Http_pass_header_info*>(http_pass_cookie, &info);
893: head << CRLF;
894: } else
1.72 moko 895: throw Exception(PARSER_RUNTIME, 0, "cookies param must be hash");
1.10 misha 896: }
897:
1.48 moko 898: if(request_body)
1.128 moko 899: head << "Content-Length: " << pa_uitoa(post_size) << CRLF;
1.48 moko 900:
901: head << CRLF;
902:
903: const char *request_head=head.untaint_and_transcode_cstr(String::L_URI, &(r.charsets));
1.1 paf 904:
1.48 moko 905: if(request_body){
906: size_t head_size = strlen(request_head);
907: request_size=post_size + head_size;
908: char *ptr=(char *)pa_malloc_atomic(request_size);
909: memcpy(ptr, request_head, head_size);
910: memcpy(ptr+head_size, request_body, post_size);
911: request=ptr;
912: } else {
913: request_size=strlen(request_head);
914: request=request_head;
915: }
1.1 paf 916: }
917:
1.78 moko 918:
1.97 moko 919: HTTP_response response;
1.22 misha 920:
1.28 misha 921: // sending request
1.95 moko 922: int status_code;
923: ALTER_EXCEPTION_SOURCE(status_code=http_request(response, idna_host, port, request, request_size, timeout_secs, fail_on_status_ne_200), &connect_string);
1.78 moko 924:
1.72 moko 925: // processing results
1.78 moko 926: char* raw_body=response.buf + response.body_offset;
927: size_t raw_body_size=response.length - response.body_offset;
928:
1.1 paf 929: result.headers=new HashStringValue;
930: VHash* vtables=new VHash;
1.133 moko 931: HASH_PUT_CSTR(*result.headers, "tables", vtables);
1.72 moko 932:
1.78 moko 933: if (!real_remote_charset && !response.headers.content_type.is_empty())
934: real_remote_charset=detect_charset(response.headers.content_type.cstr());
1.1 paf 935:
1.72 moko 936: if(as_text)
1.77 moko 937: real_remote_charset=pa_charsets.checkBOM(raw_body, raw_body_size, real_remote_charset);
1.72 moko 938:
939: if (!real_remote_charset)
940: real_remote_charset=asked_remote_charset; // never null
941:
1.125 moko 942: for(Array_iterator<HTTP_Headers::Header> i(response.headers.headers); i; ){
1.85 moko 943: HTTP_Headers::Header header=i.next();
1.72 moko 944:
945: header.transcode(*real_remote_charset, r.charsets.source());
946:
947: String &header_value=*new String(header.value, String::L_TAINTED);
948:
949: tables_update(vtables->hash(), header.name, header_value);
950: result.headers->put(header.name, new VString(header_value));
1.16 misha 951: }
952:
1.72 moko 953: // filling $.cookies
1.89 moko 954: if(vcookies=vtables->hash().get("SET-COOKIE"))
1.133 moko 955: HASH_PUT_CSTR(*result.headers, HTTP_COOKIES_NAME, new VTable(parse_cookies(r, vcookies->get_table())));
1.72 moko 956:
1.1 paf 957: // output response
958: String::C real_body=String::C(raw_body, raw_body_size);
1.16 misha 959:
960: 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
1.22 misha 961: real_body=Charset::transcode(real_body, *real_remote_charset, r.charsets.source());
1.1 paf 962: }
963:
964: result.str=const_cast<char *>(real_body.str); // hacking a little
965: result.length=real_body.length;
1.16 misha 966:
1.22 misha 967: if(as_text && result.length)
968: fix_line_breaks(result.str, result.length);
969:
1.1 paf 970: result.headers->put(file_status_name, new VInt(status_code));
1.16 misha 971:
1.1 paf 972: return result;
973: }
1.84 moko 974:
975: /* ********************** httpd *************************** */
976:
1.100 moko 977: enum EscapeState {
978: Initial,
979: Default,
980: EscapeFirst,
981: EscapeSecond
982: };
983:
984: static bool check_uri(const char *uri){
985: EscapeState state=Initial;
1.120 moko 986: uint escapedValue=0;
1.100 moko 987:
988: const char *pattern="/../";
989: const char *pos=pattern;
990:
991: while(*uri){
992: uchar c=(uchar)*(uri++);
993: switch(state) {
994: case Initial:
995: if(c!='/')
996: return false;
997: state=Default;
998: break;
999: case Default:
1000: if(c=='%'){
1001: state=EscapeFirst;
1002: continue;
1003: }
1004: if(c=='?')
1005: return true;
1006: break;
1007: case EscapeFirst:
1008: if(isxdigit(c)){
1009: state=EscapeSecond;
1010: escapedValue=hex_value[c] << 4;
1011: continue;
1012: }
1013: return false;
1014: case EscapeSecond:
1015: if(isxdigit(c)){
1016: state=Default;
1.105 moko 1017: c=(uchar)(escapedValue + hex_value[c]);
1.100 moko 1018:
1019: // implementing Apache AllowEncodedSlashes Off just in case
1020: if(c=='/' || c=='\\')
1021: return false;
1022:
1023: break;
1024: }
1025: return false;
1026: }
1027:
1028: if(c==*pos || c=='\\' && *pos=='/'){
1029: if(!*(++pos))
1030: return false;
1031: } else {
1032: pos=pattern;
1033: }
1034: }
1035: return true;
1036: }
1037:
1.84 moko 1038: class HTTPD_request : public HTTP_response {
1039: public:
1040: const char *method;
1041: const char *uri;
1042:
1.97 moko 1043: HTTPD_request() : HTTP_response(), method(NULL), uri(NULL){};
1.84 moko 1044:
1.120 moko 1045: ssize_t pa_recv(SOCKET sockfd, char *buf, size_t len);
1.103 moko 1046:
1.120 moko 1047: bool read(SOCKET sock, size_t size){
1.103 moko 1048: if(length + size > buf_size)
1049: resize(buf_size * 2 + size);
1050: ssize_t received_size=pa_recv(sock, buf + length, size);
1051: if(received_size == 0)
1052: return false;
1053: if(received_size < 0) {
1054: if(int no = pa_socks_errno())
1.111 moko 1055: throw Exception("httpd.read", 0, "error receiving request: %s (%d)", pa_socks_strerr(no), no);
1.103 moko 1056: return false;
1057: }
1058: length+=received_size;
1059: buf[length]='\0';
1060: return true;
1061: }
1062:
1.84 moko 1063: const char *extract_method(char *method_line){
1064: char* uri_start = strchr(method_line, ' ');
1065:
1066: if(!uri_start || uri_start == method_line)
1067: return NULL;
1068:
1069: char* uri_end=strchr(uri_start+1, ' ');
1070:
1071: if(!uri_end || uri_end == uri_start+1)
1072: return NULL;
1073:
1074: uri=pa_strdup(uri_start+1, uri_end-uri_start-1);
1.100 moko 1075: if(!check_uri(uri))
1076: throw Exception("httpd.request", 0, "invalid uri '%s'", uri);
1077:
1.84 moko 1078: return str_upper(method_line, uri_start-method_line);
1079: }
1080:
1.103 moko 1081:
1.120 moko 1082: bool read_header(SOCKET);
1083: size_t read_post(SOCKET, char *, size_t);
1.84 moko 1084: };
1085:
1086: enum HTTPD_request_state {
1087: HTTPD_METHOD,
1088: HTTPD_HEADERS
1089: };
1090:
1.138 moko 1091: // timeout on "void" connection is normal
1092: #define PA_RECV_TIMEOUT \
1093: LOG(pa_log("httpd [%d] recv got %d sec timeout", sockfd, pa_httpd_timeout)); \
1094: if(length) \
1095: throw Exception("httpd.timeout", 0, "timeout occurred while receiving request"); \
1096: return 0;
1097:
1.120 moko 1098: ssize_t HTTPD_request::pa_recv(SOCKET sockfd, char *buffer, size_t len){
1.111 moko 1099: LOG(pa_log("httpd [%d] recv %d appending to %d ...", sockfd, len, length));
1.107 moko 1100:
1.138 moko 1101: #ifdef PA_HAVE_ALARM
1102: if(PA_USE_ALARM) signal(SIGALRM, timeout_handler);
1103: if(PA_USE_ALARM && sigsetjmp(timeout_env, 1)) {
1104: PA_RECV_TIMEOUT
1.103 moko 1105: } else
1.107 moko 1106: #endif
1.103 moko 1107: {
1.107 moko 1108: ALARM(pa_httpd_timeout);
1.104 moko 1109: ssize_t result=recv(sockfd, buffer, len, 0);
1.107 moko 1110: ALARM(0);
1.138 moko 1111: if(result < 0 && sock_timed_out(pa_socks_errno())) {
1112: PA_RECV_TIMEOUT
1113: }
1.111 moko 1114: LOG(pa_log("httpd [%d] recv got %d bytes", sockfd, result));
1.112 moko 1115: LOG(pa_log("httpd [%d] %s", sockfd, buffer));
1.103 moko 1116: return result;
1117: }
1118: }
1119:
1.115 moko 1120: static bool valid_http_method(const char * method){
1121: return method && (
1122: !strcmp(method, "GET") ||
1123: !strcmp(method, "HEAD") ||
1124: !strcmp(method, "POST") ||
1125: !strcmp(method, "PUT") ||
1126: !strcmp(method, "DELETE") ||
1127: !strcmp(method, "CONNECT") ||
1128: !strcmp(method, "OPTIONS") ||
1129: !strcmp(method, "TRACE") ||
1130: !strcmp(method, "PATCH")
1131: );
1132: }
1133:
1.120 moko 1134: bool HTTPD_request::read_header(SOCKET sock) {
1.84 moko 1135: enum HTTPD_request_state state = HTTPD_METHOD;
1136:
1137: size_t chunk_size = 0x400*4;
1138: resize(chunk_size);
1139:
1140: while(read(sock, chunk_size)){
1141: switch(state){
1142: case HTTPD_METHOD: {
1143: size_t method_size = first_line();
1144: if(!method_size)
1145: break;
1146:
1147: char *method_line = pa_strdup(buf, method_size);
1148: method = extract_method(method_line);
1149:
1.115 moko 1150: if(!valid_http_method(method))
1.84 moko 1151: throw Exception("httpd.method", new String(method ? method : method_line), "invalid request method");
1152: state = HTTPD_HEADERS;
1153: }
1154:
1155: case HTTPD_HEADERS: {
1156: if(!body_start())
1157: break;
1158:
1159: parse_headers();
1.110 moko 1160: return true;
1.84 moko 1161: }
1162: }
1163: }
1164:
1.111 moko 1165: if(!length){ // browsers open connections in advance and they will be empty unless user requests more pages
1166: LOG(pa_log("httpd [%d] void request", sock));
1.110 moko 1167: return false;
1.111 moko 1168: }
1.110 moko 1169:
1.84 moko 1170: if(state == HTTPD_METHOD)
1171: throw Exception("httpd.request", 0, "bad request from host - no method found (size=%u)", length);
1172:
1173: if(state == HTTPD_HEADERS){
1174: parse_headers();
1175: body_offset=length;
1176: }
1.110 moko 1177:
1178: return true;
1.84 moko 1179: }
1180:
1.120 moko 1181: size_t HTTPD_request::read_post(SOCKET sock, char *body, size_t max_bytes) {
1.87 moko 1182: size_t total_read = min(length - body_offset, max_bytes);
1.98 moko 1183: memcpy(body, buf + body_offset, total_read);
1.87 moko 1184:
1185: while (total_read < max_bytes){
1.103 moko 1186: ssize_t received_size = pa_recv(sock, body + total_read, max_bytes - total_read);
1.87 moko 1187: if(received_size == 0)
1188: return total_read;
1189: if(received_size < 0) {
1190: if(int no = pa_socks_errno())
1.111 moko 1191: throw Exception("httpd.read", new String(uri), "error receiving request body: %s (%d)", pa_socks_strerr(no), no);
1.87 moko 1192: return total_read;
1193: }
1194: total_read += received_size;
1195: }
1196: return total_read;
1197: }
1198:
1.84 moko 1199: /* ********************************************************** */
1200:
1.85 moko 1201: Array<HTTP_Headers::Header> &HTTPD_Connection::headers() {
1.84 moko 1202: return request->headers.headers;
1203: }
1204:
1205: const char *HTTPD_Connection::method() {
1206: return request->method;
1207: }
1208:
1209: const char *HTTPD_Connection::uri() {
1210: return request->uri;
1211: }
1212:
1213: const char *HTTPD_Connection::content_type() {
1214: return request->headers.content_type.cstr();
1215: }
1216:
1217: uint64_t HTTPD_Connection::content_length(){
1218: return request->headers.content_length;
1219: }
1220:
1.110 moko 1221: bool HTTPD_Connection::read_header(){
1.84 moko 1222: request = new HTTPD_request();
1.111 moko 1223: bool result = request->read_header(sock);
1224: LOG(if(result){
1225: pa_log("httpd [%d] got %s \"%s\"", sock, method(), uri());
1226: })
1227: return result;
1.84 moko 1228: }
1229:
1.87 moko 1230: size_t HTTPD_Connection::read_post(char *body, size_t max_bytes) {
1231: return request->read_post(sock, body, max_bytes);
1232: }
1233:
1.90 moko 1234: size_t HTTPD_Connection::send_body(const void *buf, size_t size) {
1.112 moko 1235: LOG(pa_log("httpd [%d] response %d bytes", sock, size));
1236: LOG(pa_log("httpd [%d] %s", sock, buf));
1.131 moko 1237: ssize_t result=pa_send(sock, (const char*)buf, size);
1238: if(result < 0) {
1.90 moko 1239: int no=pa_socks_errno();
1.111 moko 1240: throw Exception("httpd.write", 0, "error sending response: %s (%d)", pa_socks_strerr(no), no);
1.90 moko 1241: }
1.131 moko 1242: return result;
1.90 moko 1243: }
1244:
1.93 moko 1245: HTTPD_Connection::~HTTPD_Connection(){
1.120 moko 1246: if(sock != INVALID_SOCKET){
1.111 moko 1247: LOG(pa_log("httpd [%d] closed", sock));
1.93 moko 1248: closesocket(sock);
1.111 moko 1249: }
1.93 moko 1250: }
1251:
1.120 moko 1252: bool HTTPD_Connection::accept(SOCKET server_sock, int timeout_value) {
1.139 ! moko 1253: int ready = pa_sock_ready(server_sock, false, timeout_value);
1.93 moko 1254: if (ready < 0) {
1255: int no=pa_socks_errno();
1256: if(no == EINTR)
1257: return false;
1258: throw Exception("httpd.accept", 0, "error waiting for connection: %s (%d)", pa_socks_strerr(no), no);
1259: }
1260: if (ready == 0)
1261: return false; /* Timeout */
1262:
1263: struct sockaddr_in addr;
1264: socklen_t sock_addr_len = sizeof(struct sockaddr_in);
1265: memset(&addr, 0, sock_addr_len);
1266:
1267: sock = ::accept(server_sock, (struct sockaddr *)&addr, &sock_addr_len);
1.120 moko 1268: if(sock == INVALID_SOCKET){
1.93 moko 1269: int no=pa_socks_errno();
1270: throw Exception("httpd.accept", 0, "error accepting connection: %s (%d)", pa_socks_strerr(no), no);
1271: }
1272:
1.123 moko 1273: // Has no positive performance effect, requires include <netinet/tcp.h>
1274: // static int sock_on=1;
1275: // setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&sock_on, sizeof(sock_on));
1276:
1.138 moko 1277: if(!PA_USE_ALARM)
1278: set_socket_timeout(sock, SO_RCVTIMEO, pa_httpd_timeout);
1279:
1.93 moko 1280: remote_addr = pa_strdup(inet_ntoa(addr.sin_addr));
1.111 moko 1281: LOG(pa_log("httpd [%d] accepted from %s", sock, remote_addr));
1.93 moko 1282: return true;
1283: }
1.84 moko 1284:
1.107 moko 1285: HTTPD_Server::HTTPD_MODE HTTPD_Server::mode = HTTPD_Server::SEQUENTIAL;
1.114 moko 1286: const char *HTTPD_Server::port=NULL;
1.106 moko 1287:
1.108 moko 1288: void HTTPD_Server::set_mode(const String &value){
1289: if(value == "sequental") mode = SEQUENTIAL;
1.113 moko 1290: #ifdef HAVE_TLS
1.108 moko 1291: else if (value == "threaded") mode = MULTITHREADED;
1.113 moko 1292: #endif
1.108 moko 1293: #ifdef _MSC_VER
1.117 moko 1294: else throw Exception("httpd.mode", &value, "$MAIN:HTTPD.mode must be 'sequental' or 'threaded'");
1.108 moko 1295: #else
1296: else if (value == "parallel") mode = PARALLEL;
1.117 moko 1297: else throw Exception("httpd.mode", &value, "$MAIN:HTTPD.mode must be 'sequental', 'parallel' or 'threaded'");
1.108 moko 1298: #endif
1299: }
1300:
1.120 moko 1301: SOCKET HTTPD_Server::bind(const char *host_port){
1.84 moko 1302: struct sockaddr_in me;
1303:
1.114 moko 1304: port = strchr(host_port, ':');
1.86 moko 1305: const char *host = NULL;
1.116 moko 1306: if(port){
1.114 moko 1307: if(port > host_port)
1308: host = pa_strdup(host_port, port - host_port);
1.86 moko 1309: port += 1;
1310: } else {
1311: port = host_port;
1312: }
1313:
1.105 moko 1314: if(!set_addr(&me, host, (short)pa_atoui(port))){
1.84 moko 1315: if (host)
1.127 moko 1316: throw Exception("httpd.bind", 0, "cannot resolve hostname \"%s\"", host);
1.84 moko 1317: me.sin_addr.s_addr=INADDR_ANY;
1318: }
1319:
1.120 moko 1320: SOCKET sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/);
1.84 moko 1321:
1.120 moko 1322: if(sock == INVALID_SOCKET){
1.84 moko 1323: int no=pa_socks_errno();
1.127 moko 1324: throw Exception("httpd.bind", 0, "cannot make socket: %s (%d)", pa_socks_strerr(no), no);
1.84 moko 1325: }
1326:
1.93 moko 1327: static int sock_on = 1;
1328:
1.84 moko 1329: if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&sock_on, sizeof(sock_on)) ||
1330: setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&sock_on, sizeof(sock_on)) ||
1331: ::bind(sock, (struct sockaddr*)&me, sizeof(me)) ||
1332: listen(sock, 16)) {
1.89 moko 1333: closesocket(sock);
1.84 moko 1334: int no = pa_socks_errno();
1.127 moko 1335: throw Exception("httpd.bind", 0, "cannot bind socket: %s (%d)", pa_socks_strerr(no), no);
1.84 moko 1336: }
1337: return sock;
1338: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pa_http.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main