Annotation of parser3/src/classes/curl.C, revision 1.60
1.1 misha 1: /** @file
2: Parser: @b curl parser class.
3:
1.54 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.1 misha 5: */
6:
1.3 misha 7: #include "pa_config_includes.h"
8:
1.1 misha 9: #include "pa_vmethod_frame.h"
10: #include "pa_request.h"
11: #include "pa_vfile.h"
12: #include "pa_charsets.h"
1.4 misha 13: #include "pa_vstring.h"
1.32 moko 14: #include "pa_vdate.h"
1.4 misha 15: #include "pa_vtable.h"
16: #include "pa_common.h"
1.11 moko 17: #include "pa_http.h"
1.5 misha 18: #include "ltdl.h"
1.1 misha 19:
1.60 ! moko 20: volatile const char * IDENT_CURL_C="$Id: curl.C,v 1.59 2017/11/29 19:10:05 moko Exp $";
1.13 moko 21:
1.1 misha 22: class MCurl: public Methoded {
23: public:
24: MCurl();
25: };
26:
27: // global variables
28:
1.36 moko 29: DECLARE_CLASS_VAR(curl, new MCurl);
1.1 misha 30:
31: #include "curl.h"
32:
33: typedef CURL *(*t_curl_easy_init)(); t_curl_easy_init f_curl_easy_init;
34: typedef CURLcode (*t_curl_easy_setopt)(CURL *, CURLoption option, ...); t_curl_easy_setopt f_curl_easy_setopt;
35: typedef CURLcode (*t_curl_easy_perform)(CURL *); t_curl_easy_perform f_curl_easy_perform;
36: typedef void (*t_curl_easy_cleanup)(CURL *); t_curl_easy_cleanup f_curl_easy_cleanup;
37: typedef const char *(*t_curl_easy_strerror)(CURLcode); t_curl_easy_strerror f_curl_easy_strerror;
1.4 misha 38: typedef CURLcode (*t_curl_easy_getinfo)(CURL *curl, CURLINFO info, ...); t_curl_easy_getinfo f_curl_easy_getinfo;
1.1 misha 39: typedef struct curl_slist *(*t_curl_slist_append)(struct curl_slist *,const char *); t_curl_slist_append f_curl_slist_append;
1.4 misha 40: typedef const char *(*t_curl_version)(); t_curl_version f_curl_version;
41: typedef CURLFORMcode (*t_curl_formadd)(struct curl_httppost **httppost, struct curl_httppost **last_post, ...); t_curl_formadd f_curl_formadd;
42: typedef void (*t_curl_formfree)(struct curl_httppost *form); t_curl_formfree f_curl_formfree;
1.1 misha 43:
44: #define GLINK(name) f_##name=(t_##name)lt_dlsym(handle, #name);
45: #define DLINK(name) GLINK(name) if(!f_##name) return "function " #name " was not found";
46:
1.14 moko 47: static const char *dlink(const char *dlopen_file_spec) {
1.28 moko 48: pa_dlinit();
1.1 misha 49:
50: lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
51:
52: if(!handle){
53: if(const char* result=lt_dlerror())
54: return result;
55: return "can not open the dynamic link module";
56: }
57:
58: DLINK(curl_easy_init);
59: DLINK(curl_easy_cleanup);
1.4 misha 60: DLINK(curl_version);
1.1 misha 61: DLINK(curl_easy_setopt);
62: DLINK(curl_easy_perform);
63: DLINK(curl_easy_strerror);
1.4 misha 64: DLINK(curl_easy_getinfo);
1.1 misha 65: DLINK(curl_slist_append);
1.4 misha 66: DLINK(curl_formadd);
67: DLINK(curl_formfree);
1.1 misha 68: return 0;
69: }
70:
71:
1.55 moko 72: struct ParserOptions : public PA_Allocated {
1.39 moko 73: // real options
1.12 misha 74: const String *filename;
1.1 misha 75: const String *content_type;
76: bool is_text;
1.4 misha 77: Charset *charset, *response_charset;
1.39 moko 78:
79: // stuff for internal use
80: const char *url;
1.4 misha 81: struct curl_httppost *f_post;
1.19 moko 82: FILE *f_stderr;
1.1 misha 83:
1.60 ! moko 84: // if response content-length check required
! 85: bool no_body;
! 86: // stuff to walkaround curl request content-length bugs
1.57 moko 87: bool is_post;
88: bool has_content_length;
89:
1.60 ! moko 90: ParserOptions() : filename(0), content_type(0), is_text(true), charset(0), response_charset(0), url(0), f_post(0), f_stderr(0), no_body(false), is_post(false), has_content_length(false){}
1.4 misha 91: ~ParserOptions() {
92: f_curl_formfree(f_post);
1.19 moko 93: if(f_stderr)
94: fclose(f_stderr);
1.4 misha 95: }
1.55 moko 96:
1.1 misha 97: };
98:
1.9 moko 99: // using TLS instead of keeping variables in request
100: THREAD_LOCAL CURL *fcurl = 0;
101: THREAD_LOCAL ParserOptions *foptions = 0;
1.1 misha 102:
103: static CURL *curl(){
104: if(!fcurl)
105: throw Exception("curl", 0, "outside of 'session' operator");
106: return fcurl;
107: }
108:
109: static ParserOptions &options(){
110: if(!foptions)
111: throw Exception("curl", 0, "outside of 'session' operator");
112: return *foptions;
113: }
114:
115: // using temporal object scheme to garanty cleanup call
116: class Temp_curl {
1.4 misha 117: CURL *saved_curl;
118: ParserOptions *saved_options;
1.1 misha 119: public:
1.4 misha 120: Temp_curl() : saved_curl(fcurl), saved_options(foptions){
1.5 misha 121: fcurl = f_curl_easy_init();
122: foptions = new ParserOptions();
1.27 moko 123: f_curl_easy_setopt(fcurl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); // avoid ipv6 by default
1.1 misha 124: }
1.56 moko 125:
1.1 misha 126: ~Temp_curl() {
127: f_curl_easy_cleanup(fcurl);
128: fcurl = saved_curl;
129: delete foptions;
130: foptions = saved_options;
131: }
132: };
133:
134: bool curl_linked = false;
1.41 moko 135: const char *curl_status = 0;
1.29 moko 136: const char *curl_library="libcurl" LT_MODULE_EXT;
1.1 misha 137:
138: static void temp_curl(void (*action)(Request&, MethodParams&), Request& r, MethodParams& params){
1.41 moko 139: if(!curl_linked)
1.1 misha 140: curl_status=dlink(curl_library);
141:
142: if(curl_status == 0){
1.41 moko 143: curl_linked=true;
1.1 misha 144: Temp_curl temp_curl;
145: action(r,params);
146: } else {
147: throw Exception("curl", 0, "failed to load curl library %s: %s", curl_library, curl_status);
148: }
149: }
150:
151: static void _curl_session_action(Request& r, MethodParams& params){
152: Value& body_code=params.as_junction(0, "body must be code");
153: r.process_write(body_code);
154: }
155:
156: static void _curl_session(Request& r, MethodParams& params){
157: temp_curl(_curl_session_action, r, params);
158: }
159:
1.5 misha 160: static void _curl_version_action(Request& r, MethodParams& ){
1.46 moko 161: r.write(*new VString(*new String(f_curl_version(), String::L_TAINTED)));
1.4 misha 162: }
163:
164: static void _curl_version(Request& r, MethodParams& params){
165: fcurl ? _curl_version_action(r, params) : temp_curl(_curl_version_action, r, params);
166: }
1.1 misha 167:
1.55 moko 168: struct CurlOption : public PA_Allocated{
1.1 misha 169:
170: enum OptionType {
171: CURL_STRING,
172: CURL_URLENCODE, // url-encoded string
1.4 misha 173: CURL_URL,
1.1 misha 174: CURL_INT,
1.60 ! moko 175: CURL_NO_BODY,
1.1 misha 176: CURL_POST,
1.57 moko 177: CURL_POSTFIELDS,
1.4 misha 178: CURL_FORM,
1.1 misha 179: CURL_HEADERS,
180: CURL_FILE,
1.15 moko 181: CURL_STDERR,
1.56 moko 182: CURL_HTTP_VERSION,
1.1 misha 183: PARSER_LIBRARY,
184: PARSER_NAME,
185: PARSER_CONTENT_TYPE,
186: PARSER_MODE,
1.4 misha 187: PARSER_CHARSET,
188: PARSER_RESPONSE_CHARSET
1.1 misha 189: };
190:
191: CURLoption id;
192: OptionType type;
193: CurlOption(CURLoption aid, OptionType atype): id(aid), type(atype) {}
194: };
195:
196: class CurlOptionHash: public HashString<CurlOption*> {
197: public:
198: CurlOptionHash() {
199: #define CURL_OPT(type, name) put(str_lower(#name),new CurlOption(CURLOPT_##name, CurlOption::type));
200: #define PARSER_OPT(type, name) put(name,new CurlOption((CURLoption)0, CurlOption::type));
1.4 misha 201: CURL_OPT(CURL_URL, URL);
1.1 misha 202: CURL_OPT(CURL_STRING, INTERFACE);
203: CURL_OPT(CURL_INT, LOCALPORT);
204: CURL_OPT(CURL_INT, PORT);
1.4 misha 205:
1.15 moko 206: CURL_OPT(CURL_INT, VERBOSE);
207: CURL_OPT(CURL_STDERR, STDERR);
208: CURL_OPT(CURL_INT, MAXFILESIZE);
209:
1.1 misha 210: CURL_OPT(CURL_INT, HTTPAUTH);
211: CURL_OPT(CURL_STRING, USERPWD);
212:
213: CURL_OPT(CURL_STRING, USERNAME);
214: CURL_OPT(CURL_STRING, PASSWORD);
215:
1.4 misha 216: CURL_OPT(CURL_URLENCODE, USERAGENT);
217: CURL_OPT(CURL_URLENCODE, REFERER);
1.1 misha 218: CURL_OPT(CURL_INT, AUTOREFERER);
1.25 misha 219:
1.1 misha 220: CURL_OPT(CURL_STRING, ENCODING); // gzip or deflate
1.25 misha 221: CURL_OPT(CURL_STRING, ACCEPT_ENCODING); // gzip or deflate
222:
1.1 misha 223: CURL_OPT(CURL_INT, FOLLOWLOCATION);
224: CURL_OPT(CURL_INT, UNRESTRICTED_AUTH);
1.27 moko 225: CURL_OPT(CURL_INT, IPRESOLVE);
1.1 misha 226:
1.57 moko 227: CURL_OPT(CURL_POST, POST);
1.1 misha 228: CURL_OPT(CURL_INT, HTTPGET);
1.60 ! moko 229: CURL_OPT(CURL_NO_BODY, NOBODY);
1.4 misha 230: CURL_OPT(CURL_STRING, CUSTOMREQUEST);
1.1 misha 231:
1.57 moko 232: CURL_OPT(CURL_POSTFIELDS, POSTFIELDS); // hopefully is safe too
233: CURL_OPT(CURL_POSTFIELDS, COPYPOSTFIELDS);
1.4 misha 234: CURL_OPT(CURL_FORM, HTTPPOST);
1.1 misha 235:
236: CURL_OPT(CURL_HEADERS, HTTPHEADER);
237: CURL_OPT(CURL_URLENCODE, COOKIE);
238: CURL_OPT(CURL_URLENCODE, COOKIELIST);
239: CURL_OPT(CURL_INT, COOKIESESSION);
240:
241: CURL_OPT(CURL_INT, IGNORE_CONTENT_LENGTH);
242: CURL_OPT(CURL_INT, HTTP_CONTENT_DECODING);
243: CURL_OPT(CURL_INT, HTTP_TRANSFER_DECODING);
244:
1.4 misha 245: CURL_OPT(CURL_INT, MAXREDIRS);
246: CURL_OPT(CURL_INT, POSTREDIR);
247:
248: CURL_OPT(CURL_STRING, RANGE);
249:
1.1 misha 250: CURL_OPT(CURL_INT, TIMEOUT);
251: CURL_OPT(CURL_INT, TIMEOUT_MS);
252: CURL_OPT(CURL_INT, LOW_SPEED_LIMIT);
253: CURL_OPT(CURL_INT, LOW_SPEED_TIME);
254: CURL_OPT(CURL_INT, MAXCONNECTS);
255:
1.4 misha 256: CURL_OPT(CURL_STRING, PROXY);
257: CURL_OPT(CURL_INT, PROXYPORT);
258: CURL_OPT(CURL_INT, PROXYTYPE);
259: CURL_OPT(CURL_INT, HTTPPROXYTUNNEL);
260: CURL_OPT(CURL_STRING, PROXYUSERPWD);
261: CURL_OPT(CURL_INT, PROXYAUTH);
262:
1.1 misha 263: CURL_OPT(CURL_INT, FRESH_CONNECT);
264: CURL_OPT(CURL_INT, FORBID_REUSE);
265: CURL_OPT(CURL_INT, CONNECTTIMEOUT);
266: CURL_OPT(CURL_INT, CONNECTTIMEOUT_MS);
1.4 misha 267: CURL_OPT(CURL_INT, FAILONERROR);
1.1 misha 268:
269: CURL_OPT(CURL_FILE, SSLCERT);
270: CURL_OPT(CURL_STRING, SSLCERTTYPE);
271: CURL_OPT(CURL_FILE, SSLKEY);
272: CURL_OPT(CURL_STRING, SSLKEYTYPE);
273: CURL_OPT(CURL_STRING, KEYPASSWD);
274: CURL_OPT(CURL_STRING, SSLENGINE);
275: CURL_OPT(CURL_STRING, SSLENGINE_DEFAULT);
276:
277: CURL_OPT(CURL_FILE, ISSUERCERT);
278: CURL_OPT(CURL_FILE, CRLFILE);
279:
280: CURL_OPT(CURL_STRING, CAINFO);
1.18 moko 281: CURL_OPT(CURL_FILE, CAPATH);
1.1 misha 282: CURL_OPT(CURL_INT, SSL_VERIFYPEER);
283: CURL_OPT(CURL_INT, SSL_VERIFYHOST);
284: CURL_OPT(CURL_STRING, SSL_CIPHER_LIST);
285: CURL_OPT(CURL_INT, SSL_SESSIONID_CACHE);
1.43 moko 286: CURL_OPT(CURL_INT, SSLVERSION);
1.56 moko 287: CURL_OPT(CURL_HTTP_VERSION, HTTP_VERSION);
1.1 misha 288:
289: PARSER_OPT(PARSER_LIBRARY, "library");
290: PARSER_OPT(PARSER_NAME, "name");
291: PARSER_OPT(PARSER_CONTENT_TYPE, "content-type");
292: PARSER_OPT(PARSER_MODE, "mode");
293: PARSER_OPT(PARSER_CHARSET, "charset");
1.4 misha 294: PARSER_OPT(PARSER_RESPONSE_CHARSET, "response-charset");
1.1 misha 295: }
296:
297: } *curl_options=0;
298:
1.55 moko 299: struct CurlInfo : public PA_Allocated{
1.32 moko 300:
301: enum OptionType {
302: CURL_STRING,
303: CURL_INT,
1.56 moko 304: CURL_DOUBLE,
305: CURL_HTTP_VERSION
1.32 moko 306: };
307:
308: CURLINFO id;
309: OptionType type;
310: CurlInfo(CURLINFO aid, OptionType atype): id(aid), type(atype) {}
311: };
312:
313: class CurlInfoHash: public HashString<CurlInfo*> {
314: public:
315: CurlInfoHash() {
316: #define CURL_INF(type, name) put(str_lower(#name),new CurlInfo(CURLINFO_##name, CurlInfo::type));
317: CURL_INF(CURL_DOUBLE, APPCONNECT_TIME);
318: CURL_INF(CURL_DOUBLE, CONNECT_TIME);
319: CURL_INF(CURL_DOUBLE, CONTENT_LENGTH_DOWNLOAD);
320: CURL_INF(CURL_DOUBLE, CONTENT_LENGTH_UPLOAD);
321: CURL_INF(CURL_STRING, CONTENT_TYPE);
322: CURL_INF(CURL_STRING, EFFECTIVE_URL);
323: CURL_INF(CURL_INT, HEADER_SIZE);
324: CURL_INF(CURL_INT, HTTPAUTH_AVAIL);
325: CURL_INF(CURL_DOUBLE, NAMELOOKUP_TIME);
326: CURL_INF(CURL_INT, NUM_CONNECTS);
327: CURL_INF(CURL_INT, OS_ERRNO);
328: CURL_INF(CURL_DOUBLE, PRETRANSFER_TIME);
329: CURL_INF(CURL_STRING, PRIMARY_IP);
330: CURL_INF(CURL_INT, PROXYAUTH_AVAIL);
331: CURL_INF(CURL_INT, REDIRECT_COUNT);
332: CURL_INF(CURL_DOUBLE, REDIRECT_TIME);
333: CURL_INF(CURL_STRING, REDIRECT_URL);
334: CURL_INF(CURL_INT, REQUEST_SIZE);
335: CURL_INF(CURL_INT, RESPONSE_CODE);
336: CURL_INF(CURL_DOUBLE, SIZE_DOWNLOAD);
337: CURL_INF(CURL_DOUBLE, SIZE_UPLOAD);
338: CURL_INF(CURL_DOUBLE, SPEED_DOWNLOAD);
339: CURL_INF(CURL_DOUBLE, SPEED_UPLOAD);
340: CURL_INF(CURL_INT, SSL_VERIFYRESULT);
341: CURL_INF(CURL_DOUBLE, STARTTRANSFER_TIME);
342: CURL_INF(CURL_DOUBLE, TOTAL_TIME);
1.56 moko 343: CURL_INF(CURL_HTTP_VERSION, HTTP_VERSION);
344: CURL_INF(CURL_STRING, SCHEME);
1.32 moko 345: }
346:
347: } *curl_infos=0;
348:
1.1 misha 349: static const char *curl_urlencode(const String &s, Request& r){
350: if(options().charset){
351: Temp_client_charset temp(r.charsets, *options().charset);
352: return s.untaint_and_transcode_cstr(String::L_URI, &r.charsets);
353: } else
354: return s.untaint_cstr(String::L_URI);
355: }
356:
357: static struct curl_slist *curl_headers(HashStringValue *value_hash, Request& r) {
358: struct curl_slist *slist=NULL;
359:
360: for(HashStringValue::Iterator i(*value_hash); i; i.next() ){
361: String header =
1.10 moko 362: String(pa_http_safe_header_name(capitalize(i.key().cstr())), String::L_AS_IS)
1.1 misha 363: << ": "
1.10 moko 364: << String(i.value()->as_string(), String::L_HTTP_HEADER);
1.1 misha 365:
366: slist=f_curl_slist_append(slist, curl_urlencode(header, r));
367: }
368: return slist;
369: }
370:
1.4 misha 371: static const char* curl_transcode(const String &s, Request& r){
372: return options().charset ? Charset::transcode(s.cstr(), r.charsets.source(), *options().charset).cstr() : s.cstr();
373: }
374:
375: static void curl_form(HashStringValue *value_hash, Request& r){
376: struct curl_httppost *f_last=0;
377: for(HashStringValue::Iterator i(*value_hash); i; i.next() ){
378: const char *key = curl_transcode(String(i.key().cstr()), r);
379: if(const String* svalue = i.value()->get_string()){
380: // string
381: f_curl_formadd(&options().f_post, &f_last,
382: CURLFORM_PTRNAME, key,
383: CURLFORM_PTRCONTENTS, curl_transcode(String(svalue->cstr()), r),
384: CURLFORM_END);
385: } else if(Table* tvalue = i.value()->get_table()){
386: // table
387: for(size_t t = 0; t < tvalue->count(); t++) {
388: f_curl_formadd(&options().f_post, &f_last,
389: CURLFORM_PTRNAME, key,
390: CURLFORM_PTRCONTENTS, curl_transcode(String(tvalue->get(t)->get(0)->cstr()), r),
391: CURLFORM_END);
392: }
393: } else if(VFile* fvalue=static_cast<VFile *>(i.value()->as("file"))){
394: // file
395: f_curl_formadd(&options().f_post, &f_last,
396: CURLFORM_PTRNAME, key,
397: CURLFORM_BUFFER, curl_transcode(String(fvalue->fields().get("name")->as_string(), String::L_FILE_SPEC), r),
398: CURLFORM_BUFFERLENGTH, (long)fvalue->value_size(),
399: CURLFORM_BUFFERPTR, fvalue->value_ptr(),
400: CURLFORM_CONTENTTYPE, fvalue->fields().get("content-type")->as_string().taint_cstr(String::L_URI),
401: CURLFORM_END);
402: } else {
1.56 moko 403: throw Exception("curl", new String(i.key(), String::L_TAINTED), "is %s, form option value can be string, table or file only", i.value()->type());
1.4 misha 404: }
405: }
406: }
407:
1.18 moko 408: static const char *curl_check_file(const String &file_spec){
409: const char *file_spec_cstr=file_spec.taint_cstr(String::L_FILE_SPEC);
410: struct stat finfo;
1.49 moko 411: if(pa_stat(file_spec_cstr, &finfo)==0)
1.18 moko 412: check_safe_mode(finfo, file_spec, file_spec_cstr);
413: return file_spec_cstr;
414: }
415:
1.56 moko 416: static long curl_http_version(const String &name){
417: if(name.is_empty()) return CURL_HTTP_VERSION_NONE;
418:
419: if(name == "1.0") return CURL_HTTP_VERSION_1_0;
420: if(name == "1.1") return CURL_HTTP_VERSION_1_1;
421: if(name == "2") return CURL_HTTP_VERSION_2;
422: if(name == "2.0") return CURL_HTTP_VERSION_2_0;
423:
424: const char *sname = str_upper(name.cstr());
425: if(!strcmp(sname,"2TLS")) return CURL_HTTP_VERSION_2TLS;
426: if(!strcmp(sname,"2ONLY")) return CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE;
427: throw Exception("curl", &name, "invalid http_version option value");
428: }
429:
430: static const char *curl_http_version_name(long value){
431: if(value == CURL_HTTP_VERSION_NONE) return "none";
432: if(value == CURL_HTTP_VERSION_1_0) return "1.0";
433: if(value == CURL_HTTP_VERSION_1_1) return "1.1";
434: if(value == CURL_HTTP_VERSION_2) return "2";
435: throw Exception("curl", 0, "invalid http version '%d' in info", value);
436: }
437:
1.1 misha 438: static void curl_setopt(HashStringValue::key_type key, HashStringValue::value_type value, Request& r) {
439: CurlOption *opt=curl_options->get(key);
440:
441: if(opt==0)
442: throw Exception("curl", 0, "called with invalid option '%s'", key.cstr());
443:
444: CURLcode res = CURLE_OK;
1.44 moko 445: Value &v=r.process(*value);
1.1 misha 446:
447: switch (opt->type){
448: case CurlOption::CURL_STRING:{
449: // string curl option
450: const char *value_str=v.as_string().cstr();
451: res=f_curl_easy_setopt(curl(), opt->id, value_str);
452: break;
453: }
454: case CurlOption::CURL_URLENCODE:{
455: // url-encoded string curl option
456: const char *value_str=curl_urlencode(v.as_string(), r);
457: res=f_curl_easy_setopt(curl(), opt->id, value_str);
458: break;
459: }
1.4 misha 460: case CurlOption::CURL_URL:{
461: // url-encoded string curl_url option
1.5 misha 462: const String url = v.as_string();
463: if(!url.starts_with("http://") && !url.starts_with("https://"))
464: throw Exception("curl", 0, "failed to set option '%s': invalid url scheme '%s'", key.cstr(), url.cstr());
1.39 moko 465: options().url=curl_urlencode(url, r);
466: res=f_curl_easy_setopt(curl(), opt->id, options().url);
1.4 misha 467: break;
468: }
1.1 misha 469: case CurlOption::CURL_INT:{
1.2 misha 470: // integer curl option
471: long value_int=(long)v.as_double();
1.1 misha 472: res=f_curl_easy_setopt(curl(), opt->id, value_int);
473: break;
474: }
1.60 ! moko 475: case CurlOption::CURL_NO_BODY:{
! 476: // integer curl option
! 477: long value_int=(long)v.as_double();
! 478: res=f_curl_easy_setopt(curl(), opt->id, value_int);
! 479: options().no_body=value_int != 0;
! 480: break;
! 481: }
1.1 misha 482: case CurlOption::CURL_POST:{
1.57 moko 483: // integer curl option
484: long value_int=(long)v.as_double();
485: res=f_curl_easy_setopt(curl(), opt->id, value_int);
486: options().is_post=value_int != 0;
487: break;
488: }
489: case CurlOption::CURL_POSTFIELDS:{
1.1 misha 490: // http post curl option
491: if(v.get_string()){
1.2 misha 492: if( (res=f_curl_easy_setopt(curl(), CURLOPT_POSTFIELDSIZE, -1L)) == CURLE_OK )
1.1 misha 493: res=f_curl_easy_setopt(curl(), opt->id, curl_urlencode(v.as_string(), r));
494: } else {
495: VFile *file=v.as_vfile(String::L_AS_IS);
1.2 misha 496: if( (res=f_curl_easy_setopt(curl(), CURLOPT_POSTFIELDSIZE, (long)file->value_size())) == CURLE_OK )
1.1 misha 497: res=f_curl_easy_setopt(curl(), opt->id, file->value_ptr());
498: }
1.57 moko 499: options().has_content_length=true;
1.1 misha 500: break;
501: }
1.4 misha 502: case CurlOption::CURL_FORM:{
1.48 moko 503: HashStringValue *value_hash = v.as_hash("failed to set option 'httppost': value");
1.4 misha 504: if(value_hash){
505: curl_form(value_hash, r);
1.48 moko 506: } else {
1.57 moko 507: if(options().f_post)
508: f_curl_formfree(options().f_post);
1.4 misha 509: options().f_post = 0;
1.5 misha 510: }
1.4 misha 511: res=f_curl_easy_setopt(curl(), CURLOPT_HTTPPOST, foptions->f_post);
1.57 moko 512: options().has_content_length=true;
1.4 misha 513: break;
514: }
1.1 misha 515: case CurlOption::CURL_HEADERS:{
516: // http headers curl option
1.48 moko 517: HashStringValue *value_hash=v.as_hash("failed to set option 'httpheader': value");
1.1 misha 518: res=f_curl_easy_setopt(curl(), opt->id, value_hash ? curl_headers(value_hash, r) : 0);
519: break;
520: }
521: case CurlOption::CURL_FILE:{
522: // file-spec curl option
1.18 moko 523: const char *file_spec_cstr=curl_check_file(r.absolute(v.as_string()));
524: res=f_curl_easy_setopt(curl(), opt->id, file_spec_cstr);
1.1 misha 525: break;
526: }
1.16 moko 527: case CurlOption::CURL_STDERR:{
528: // verbose output redirection from stderr to file curl option
1.18 moko 529: const char *file_spec_cstr=curl_check_file(r.absolute(v.as_string()));
1.53 moko 530: FILE *f_stderr=options().f_stderr=pa_fopen(file_spec_cstr, "wt");
1.19 moko 531: if (f_stderr){
532: res=f_curl_easy_setopt(curl(), opt->id, f_stderr);
1.16 moko 533: } else {
1.18 moko 534: throw Exception("curl", 0, "failed to set option '%s': unable to open file '%s'", key.cstr(), file_spec_cstr);
1.16 moko 535: }
536: break;
537: }
1.56 moko 538: case CurlOption::CURL_HTTP_VERSION:{
539: // http protocol version name curl option
540: long value_int=curl_http_version(v.as_string());
541: res=f_curl_easy_setopt(curl(), opt->id, value_int);
542: break;
543: }
1.1 misha 544: case CurlOption::PARSER_LIBRARY:{
545: // 'library' parser option
1.41 moko 546: if(!curl_linked){
1.1 misha 547: curl_library=v.as_string().taint_cstr(String::L_FILE_SPEC);
548: } else
1.16 moko 549: throw Exception("curl", 0, "failed to set option '%s': already loaded", key.cstr());
1.1 misha 550: break;
551: }
552: case CurlOption::PARSER_NAME:{
553: // 'name' parser option
1.12 misha 554: options().filename=&v.as_string();
1.1 misha 555: break;
556: }
557: case CurlOption::PARSER_CONTENT_TYPE:{
558: // 'content-type' parser option
559: options().content_type=&v.as_string();
560: break;
561: }
562: case CurlOption::PARSER_MODE:{
563: // 'mode' parser option
1.12 misha 564: options().is_text=VFile::is_text_mode(v.as_string());
1.1 misha 565: break;
566: }
567: case CurlOption::PARSER_CHARSET:{
1.30 moko 568: // 'charset' parser option should be processed before other options
1.1 misha 569: break;
570: }
1.4 misha 571: case CurlOption::PARSER_RESPONSE_CHARSET:{
1.12 misha 572: // 'response-charset' parser option
1.42 moko 573: options().response_charset=&pa_charsets.get(v.as_string());
1.4 misha 574: break;
575: }
1.1 misha 576: }
577:
578: if(res != CURLE_OK)
579: throw Exception("curl", 0, "failed to set option '%s': %s", key.cstr(), f_curl_easy_strerror(res));
580: }
581:
1.3 misha 582: static void _curl_options(Request& r, MethodParams& params){
1.1 misha 583: if(curl_options==0)
584: curl_options=new CurlOptionHash();
585:
1.30 moko 586: if(HashStringValue* options_hash=params.as_hash(0)){
587: if(Value* value=options_hash->get("charset")){
588: // charset should be handled first as params may require transcode
1.44 moko 589: Value &v=r.process(*value);
1.42 moko 590: options().charset=&pa_charsets.get(v.as_string());
1.30 moko 591: }
592: options_hash->for_each<Request&>(curl_setopt, r);
593: }
1.1 misha 594: }
595:
1.32 moko 596: #define CURL_GETINFO(arg) \
597: if((res=f_curl_easy_getinfo(curl(), info->id, &arg)) != CURLE_OK){ \
1.58 moko 598: if (fail_on_error) \
599: throw Exception("curl", 0, "failed to get %s info: %s", key.cstr(), f_curl_easy_strerror(res)); \
600: return 0; \
1.32 moko 601: }
602:
1.58 moko 603: static Value *curl_getinfo(const String::Body &key, CurlInfo *info, bool fail_on_error=false) {
1.32 moko 604: CURLcode res;
605: switch (info->type){
606: case CurlInfo::CURL_STRING:{
607: char *str=0;
608: CURL_GETINFO(str);
1.33 moko 609: return new VString(str ? *new String(pa_strdup(str), String::L_TAINTED) : String::Empty);
1.32 moko 610: }
611: case CurlInfo::CURL_INT:{
612: long l=0;
613: CURL_GETINFO(l);
614: return new VInt(l);
615: }
616: case CurlInfo::CURL_DOUBLE:{
617: double d=0;
618: CURL_GETINFO(d);
619: return new VDouble(d);
620: }
1.56 moko 621: case CurlInfo::CURL_HTTP_VERSION:{
622: long l=0;
623: CURL_GETINFO(l);
624: return new VString(*new String(curl_http_version_name(l), String::L_TAINTED));
625: }
1.32 moko 626: }
627: return VVoid::get();
628: }
629:
630: static void _curl_info(Request& r, MethodParams& params){
631: if(curl_infos==0)
632: curl_infos=new CurlInfoHash();
633: if(params.count()==1){
634: const String &name=params.as_string(0, "name must be string");
1.58 moko 635: CurlInfo *info=curl_infos->get(name);
636: if(info==0)
637: throw Exception("curl", 0, "called with invalid parameter '%s'", name.cstr());
1.59 moko 638: r.write(*curl_getinfo(name, info, true));
1.32 moko 639: } else {
640: VHash& result=*new VHash;
641: for(CurlInfoHash::Iterator i(*curl_infos); i; i.next() ){
1.59 moko 642: Value *value=curl_getinfo(i.key(), i.value());
1.58 moko 643: if(value)
644: result.get_hash()->put(i.key(), value);
1.32 moko 645: }
1.46 moko 646: r.write(result);
1.32 moko 647: }
648: }
649:
1.1 misha 650: class Curl_buffer{
651: public:
652: char *buf;
653: size_t length;
654: size_t buf_size;
1.50 moko 655: ResponseHeaders& headers;
1.1 misha 656:
1.52 moko 657: Curl_buffer(ResponseHeaders& aheaders) : buf((char *)pa_malloc_atomic(MAX_STRING)), length(0), buf_size(MAX_STRING-1), headers(aheaders){}
1.50 moko 658:
659: void resize(size_t size){
660: buf_size=size;
661: buf=(char *)pa_realloc(buf, size+1);
662: }
1.1 misha 663: };
664:
665: static int curl_writer(char *data, size_t size, size_t nmemb, Curl_buffer *result){
666: if(result == 0)
667: return 0;
668:
669: size=size*nmemb;
670: if(size>0){
1.50 moko 671: size_t buf_required = result->length + size;
672: if(buf_required > result->buf_size)
1.51 moko 673: result->resize(buf_required <= result->headers.content_length ? (size_t)result->headers.content_length : result->buf_size*2 + size);
1.1 misha 674: memcpy(result->buf+result->length, data, size);
675: result->length += size;
676: }
677: return size;
678: }
679:
1.38 moko 680: static int curl_header(char *data, size_t size, size_t nmemb, ResponseHeaders *result){
1.1 misha 681: if(result == 0)
682: return 0;
683:
684: size=size*nmemb;
685: if(size>0){
1.47 moko 686: char *header=pa_strdup(data, size);
687: if(!pa_strncasecmp(header, "HTTP/") && !strchr(header, ':')){
688: // response code, clearing possible headers from previous requests
689: result->clear();
690: } else {
691: result->add_header(header);
1.60 ! moko 692: if(result->content_length>pa_file_size_limit && !options().no_body)
1.50 moko 693: return 0;
1.47 moko 694: }
1.1 misha 695: }
696: return size;
697: }
698:
699: #define CURL_SETOPT(option, arg, message) \
700: if( (res=f_curl_easy_setopt(curl(), option, arg)) != CURLE_OK){ \
701: throw Exception("curl", 0, "failed to set " message ": %s", f_curl_easy_strerror(res)); \
702: }
703:
704: static void _curl_load_action(Request& r, MethodParams& params){
705: if(params.count()==1)
1.3 misha 706: _curl_options(r, params);
1.1 misha 707:
708: CURLcode res;
709:
710: // we need a container for headers as VFile fields can be put only after VFile.set
1.38 moko 711: ResponseHeaders response;
1.1 misha 712: CURL_SETOPT(CURLOPT_HEADERFUNCTION, curl_header, "curl header function");
1.24 misha 713: CURL_SETOPT(CURLOPT_WRITEHEADER, &response, "curl header buffer");
1.1 misha 714:
1.50 moko 715: Curl_buffer body(response);
716: CURL_SETOPT(CURLOPT_WRITEFUNCTION, curl_writer, "curl writer function");
717: CURL_SETOPT(CURLOPT_WRITEDATA, &body, "curl write buffer");
718:
1.57 moko 719: if(options().is_post && !options().has_content_length){
720: // libcurl bug walkaround. Prior to 7.38 (Debian Jessie) curl passed Content-length: -1
721: // after that no Content-length header is passed, that hangs request to nginx.
722: CURL_SETOPT(CURLOPT_POSTFIELDSIZE, 0, "post content-length");
723: }
724:
1.1 misha 725: if((res=f_curl_easy_perform(curl())) != CURLE_OK){
1.15 moko 726: const char *ex_type = 0;
1.4 misha 727: switch(res){
728: case CURLE_OPERATION_TIMEDOUT:
729: ex_type = "curl.timeout"; break;
730: case CURLE_COULDNT_RESOLVE_HOST:
731: ex_type = "curl.host"; break;
732: case CURLE_COULDNT_CONNECT:
733: ex_type = "curl.connect"; break;
734: case CURLE_HTTP_RETURNED_ERROR:
735: ex_type = "curl.status"; break;
736: case CURLE_SSL_CONNECT_ERROR:
737: case CURLE_SSL_CERTPROBLEM:
738: case CURLE_SSL_CIPHER:
739: case CURLE_SSL_CACERT:
740: case CURLE_SSL_ENGINE_INITFAILED:
741: ex_type = "curl.ssl"; break;
1.50 moko 742: case CURLE_WRITE_ERROR:
743: check_file_size(response.content_length, *new String(options().url)); break;
1.31 moko 744: default: break;
1.4 misha 745: }
1.38 moko 746: throw Exception( PA_DEFAULT(ex_type, "curl.fail"), 0, "%s", f_curl_easy_strerror(res));
1.1 misha 747: }
748:
749: // assure trailing zero
750: body.buf[body.length]=0;
751:
1.4 misha 752: VFile& result=*new VFile;
753:
1.8 moko 754: Charset *asked_charset = options().response_charset;
1.38 moko 755: if (!asked_charset && !response.content_type.is_empty())
756: asked_charset=detect_charset(response.content_type.cstr());
757:
758: if(options().is_text)
1.42 moko 759: asked_charset=pa_charsets.checkBOM(body.buf, body.length, asked_charset);
1.38 moko 760:
761: if (!asked_charset)
762: asked_charset = options().charset;
1.1 misha 763:
764: if(options().is_text && asked_charset != 0){
765: String::C c=Charset::transcode(String::C(body.buf, body.length), *asked_charset, r.charsets.source());
766: body.buf=(char *)c.str;
767: body.length=c.length;
768: }
769:
1.38 moko 770: const String *content_type = PA_DEFAULT(options().content_type, response.content_type.is_empty() ? 0 : new String(response.content_type, String::L_TAINTED));
1.39 moko 771: const String *filename = PA_DEFAULT(options().filename, new String(options().url));
1.38 moko 772:
1.39 moko 773: result.set(true/*tainted*/, options().is_text, body.buf, body.length, filename, content_type ? new VString(*content_type) : 0, &r);
1.38 moko 774:
1.4 misha 775: long http_status = 0;
776: if(f_curl_easy_getinfo(curl(), CURLINFO_RESPONSE_CODE, &http_status) == CURLE_OK){
777: result.fields().put("status", new VInt(http_status));
778: }
779:
1.38 moko 780: VHash* vtables=new VHash;
781: result.fields().put("tables", vtables);
1.23 misha 782:
1.38 moko 783: for(Array_iterator<ResponseHeaders::Header> i(response.headers); i.has_next(); ){
784: ResponseHeaders::Header header=i.next();
1.24 misha 785:
786: if(asked_charset)
1.38 moko 787: header.transcode(*asked_charset, r.charsets.source());
788:
789: String &header_value=*new String(header.value, String::L_TAINTED);
790:
791: tables_update(vtables->hash(), header.name, header_value);
792: result.fields().put(header.name, new VString(header_value));
1.1 misha 793: }
794:
1.38 moko 795: // filling $.cookies
796: if(Value *vcookies=vtables->hash().get("SET-COOKIE"))
797: result.fields().put(HTTP_COOKIES_NAME, new VTable(parse_cookies(r, vcookies->get_table())));
1.23 misha 798:
1.46 moko 799: r.write(result);
1.1 misha 800: }
801:
802: static void _curl_load(Request& r, MethodParams& params){
803: fcurl ? _curl_load_action(r, params) : temp_curl(_curl_load_action, r, params);
804: }
805:
806: // constructor
807: MCurl::MCurl(): Methoded("curl") {
808: add_native_method("session", Method::CT_STATIC, _curl_session, 1, 1);
1.4 misha 809: add_native_method("version", Method::CT_STATIC, _curl_version, 0, 0);
1.3 misha 810: add_native_method("options", Method::CT_STATIC, _curl_options, 1, 1);
1.32 moko 811: add_native_method("info", Method::CT_STATIC, _curl_info, 0, 1);
1.1 misha 812: add_native_method("load", Method::CT_STATIC, _curl_load, 0, 1);
1.3 misha 813: }
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