Annotation of parser3/src/classes/curl.C, revision 1.67
1.1 misha 1: /** @file
2: Parser: @b curl parser class.
3:
1.67 ! moko 4: Copyright (c) 2001-2020 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:
1.67 ! moko 20: volatile const char * IDENT_CURL_C="$Id: curl.C,v 1.66 2020/12/14 20:58:15 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;
1.66 moko 119:
120: // every TLS should be referenced elsewhere, or GC will collect it
121: CURL *thread_curl;
122: ParserOptions *thread_options;
1.1 misha 123: public:
1.4 misha 124: Temp_curl() : saved_curl(fcurl), saved_options(foptions){
1.66 moko 125: thread_curl = fcurl = f_curl_easy_init();
126: thread_options = foptions = new ParserOptions();
1.27 moko 127: f_curl_easy_setopt(fcurl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); // avoid ipv6 by default
1.1 misha 128: }
1.56 moko 129:
1.1 misha 130: ~Temp_curl() {
131: f_curl_easy_cleanup(fcurl);
132: fcurl = saved_curl;
133: delete foptions;
134: foptions = saved_options;
135: }
136: };
137:
138: bool curl_linked = false;
1.41 moko 139: const char *curl_status = 0;
1.29 moko 140: const char *curl_library="libcurl" LT_MODULE_EXT;
1.1 misha 141:
142: static void temp_curl(void (*action)(Request&, MethodParams&), Request& r, MethodParams& params){
1.41 moko 143: if(!curl_linked)
1.1 misha 144: curl_status=dlink(curl_library);
145:
146: if(curl_status == 0){
1.41 moko 147: curl_linked=true;
1.1 misha 148: Temp_curl temp_curl;
149: action(r,params);
150: } else {
151: throw Exception("curl", 0, "failed to load curl library %s: %s", curl_library, curl_status);
152: }
153: }
154:
155: static void _curl_session_action(Request& r, MethodParams& params){
156: Value& body_code=params.as_junction(0, "body must be code");
157: r.process_write(body_code);
158: }
159:
160: static void _curl_session(Request& r, MethodParams& params){
161: temp_curl(_curl_session_action, r, params);
162: }
163:
1.5 misha 164: static void _curl_version_action(Request& r, MethodParams& ){
1.46 moko 165: r.write(*new VString(*new String(f_curl_version(), String::L_TAINTED)));
1.4 misha 166: }
167:
168: static void _curl_version(Request& r, MethodParams& params){
169: fcurl ? _curl_version_action(r, params) : temp_curl(_curl_version_action, r, params);
170: }
1.1 misha 171:
1.55 moko 172: struct CurlOption : public PA_Allocated{
1.1 misha 173:
174: enum OptionType {
175: CURL_STRING,
176: CURL_URLENCODE, // url-encoded string
1.4 misha 177: CURL_URL,
1.1 misha 178: CURL_INT,
1.60 moko 179: CURL_NO_BODY,
1.1 misha 180: CURL_POST,
1.57 moko 181: CURL_POSTFIELDS,
1.4 misha 182: CURL_FORM,
1.1 misha 183: CURL_HEADERS,
184: CURL_FILE,
1.15 moko 185: CURL_STDERR,
1.56 moko 186: CURL_HTTP_VERSION,
1.1 misha 187: PARSER_LIBRARY,
188: PARSER_NAME,
189: PARSER_CONTENT_TYPE,
190: PARSER_MODE,
1.4 misha 191: PARSER_CHARSET,
192: PARSER_RESPONSE_CHARSET
1.1 misha 193: };
194:
195: CURLoption id;
196: OptionType type;
197: CurlOption(CURLoption aid, OptionType atype): id(aid), type(atype) {}
198: };
199:
200: class CurlOptionHash: public HashString<CurlOption*> {
201: public:
202: CurlOptionHash() {
203: #define CURL_OPT(type, name) put(str_lower(#name),new CurlOption(CURLOPT_##name, CurlOption::type));
204: #define PARSER_OPT(type, name) put(name,new CurlOption((CURLoption)0, CurlOption::type));
1.4 misha 205: CURL_OPT(CURL_URL, URL);
1.1 misha 206: CURL_OPT(CURL_STRING, INTERFACE);
207: CURL_OPT(CURL_INT, LOCALPORT);
208: CURL_OPT(CURL_INT, PORT);
1.4 misha 209:
1.15 moko 210: CURL_OPT(CURL_INT, VERBOSE);
211: CURL_OPT(CURL_STDERR, STDERR);
212: CURL_OPT(CURL_INT, MAXFILESIZE);
213:
1.1 misha 214: CURL_OPT(CURL_INT, HTTPAUTH);
215: CURL_OPT(CURL_STRING, USERPWD);
216:
217: CURL_OPT(CURL_STRING, USERNAME);
218: CURL_OPT(CURL_STRING, PASSWORD);
219:
1.4 misha 220: CURL_OPT(CURL_URLENCODE, USERAGENT);
221: CURL_OPT(CURL_URLENCODE, REFERER);
1.1 misha 222: CURL_OPT(CURL_INT, AUTOREFERER);
1.25 misha 223:
1.1 misha 224: CURL_OPT(CURL_STRING, ENCODING); // gzip or deflate
1.25 misha 225: CURL_OPT(CURL_STRING, ACCEPT_ENCODING); // gzip or deflate
226:
1.1 misha 227: CURL_OPT(CURL_INT, FOLLOWLOCATION);
228: CURL_OPT(CURL_INT, UNRESTRICTED_AUTH);
1.27 moko 229: CURL_OPT(CURL_INT, IPRESOLVE);
1.1 misha 230:
1.57 moko 231: CURL_OPT(CURL_POST, POST);
1.1 misha 232: CURL_OPT(CURL_INT, HTTPGET);
1.60 moko 233: CURL_OPT(CURL_NO_BODY, NOBODY);
1.4 misha 234: CURL_OPT(CURL_STRING, CUSTOMREQUEST);
1.1 misha 235:
1.57 moko 236: CURL_OPT(CURL_POSTFIELDS, POSTFIELDS); // hopefully is safe too
237: CURL_OPT(CURL_POSTFIELDS, COPYPOSTFIELDS);
1.4 misha 238: CURL_OPT(CURL_FORM, HTTPPOST);
1.1 misha 239:
240: CURL_OPT(CURL_HEADERS, HTTPHEADER);
241: CURL_OPT(CURL_URLENCODE, COOKIE);
242: CURL_OPT(CURL_URLENCODE, COOKIELIST);
243: CURL_OPT(CURL_INT, COOKIESESSION);
244:
245: CURL_OPT(CURL_INT, IGNORE_CONTENT_LENGTH);
246: CURL_OPT(CURL_INT, HTTP_CONTENT_DECODING);
247: CURL_OPT(CURL_INT, HTTP_TRANSFER_DECODING);
248:
1.4 misha 249: CURL_OPT(CURL_INT, MAXREDIRS);
250: CURL_OPT(CURL_INT, POSTREDIR);
251:
252: CURL_OPT(CURL_STRING, RANGE);
253:
1.1 misha 254: CURL_OPT(CURL_INT, TIMEOUT);
255: CURL_OPT(CURL_INT, TIMEOUT_MS);
256: CURL_OPT(CURL_INT, LOW_SPEED_LIMIT);
257: CURL_OPT(CURL_INT, LOW_SPEED_TIME);
258: CURL_OPT(CURL_INT, MAXCONNECTS);
259:
1.4 misha 260: CURL_OPT(CURL_STRING, PROXY);
261: CURL_OPT(CURL_INT, PROXYPORT);
262: CURL_OPT(CURL_INT, PROXYTYPE);
263: CURL_OPT(CURL_INT, HTTPPROXYTUNNEL);
264: CURL_OPT(CURL_STRING, PROXYUSERPWD);
265: CURL_OPT(CURL_INT, PROXYAUTH);
266:
1.1 misha 267: CURL_OPT(CURL_INT, FRESH_CONNECT);
268: CURL_OPT(CURL_INT, FORBID_REUSE);
269: CURL_OPT(CURL_INT, CONNECTTIMEOUT);
270: CURL_OPT(CURL_INT, CONNECTTIMEOUT_MS);
1.4 misha 271: CURL_OPT(CURL_INT, FAILONERROR);
1.1 misha 272:
273: CURL_OPT(CURL_FILE, SSLCERT);
274: CURL_OPT(CURL_STRING, SSLCERTTYPE);
275: CURL_OPT(CURL_FILE, SSLKEY);
276: CURL_OPT(CURL_STRING, SSLKEYTYPE);
277: CURL_OPT(CURL_STRING, KEYPASSWD);
278: CURL_OPT(CURL_STRING, SSLENGINE);
279: CURL_OPT(CURL_STRING, SSLENGINE_DEFAULT);
280:
281: CURL_OPT(CURL_FILE, ISSUERCERT);
282: CURL_OPT(CURL_FILE, CRLFILE);
283:
284: CURL_OPT(CURL_STRING, CAINFO);
1.18 moko 285: CURL_OPT(CURL_FILE, CAPATH);
1.1 misha 286: CURL_OPT(CURL_INT, SSL_VERIFYPEER);
287: CURL_OPT(CURL_INT, SSL_VERIFYHOST);
288: CURL_OPT(CURL_STRING, SSL_CIPHER_LIST);
289: CURL_OPT(CURL_INT, SSL_SESSIONID_CACHE);
1.43 moko 290: CURL_OPT(CURL_INT, SSLVERSION);
1.56 moko 291: CURL_OPT(CURL_HTTP_VERSION, HTTP_VERSION);
1.1 misha 292:
293: PARSER_OPT(PARSER_LIBRARY, "library");
294: PARSER_OPT(PARSER_NAME, "name");
295: PARSER_OPT(PARSER_CONTENT_TYPE, "content-type");
296: PARSER_OPT(PARSER_MODE, "mode");
297: PARSER_OPT(PARSER_CHARSET, "charset");
1.4 misha 298: PARSER_OPT(PARSER_RESPONSE_CHARSET, "response-charset");
1.1 misha 299: }
300:
301: } *curl_options=0;
302:
1.55 moko 303: struct CurlInfo : public PA_Allocated{
1.32 moko 304:
305: enum OptionType {
306: CURL_STRING,
307: CURL_INT,
1.56 moko 308: CURL_DOUBLE,
309: CURL_HTTP_VERSION
1.32 moko 310: };
311:
312: CURLINFO id;
313: OptionType type;
314: CurlInfo(CURLINFO aid, OptionType atype): id(aid), type(atype) {}
315: };
316:
1.61 moko 317: class CurlInfoHash: public OrderedHashString<CurlInfo*> {
1.32 moko 318: public:
319: CurlInfoHash() {
320: #define CURL_INF(type, name) put(str_lower(#name),new CurlInfo(CURLINFO_##name, CurlInfo::type));
1.61 moko 321: CURL_INF(CURL_STRING, SCHEME);
322: CURL_INF(CURL_HTTP_VERSION, HTTP_VERSION);
323: CURL_INF(CURL_STRING, EFFECTIVE_URL);
324: CURL_INF(CURL_STRING, CONTENT_TYPE);
325: CURL_INF(CURL_INT, RESPONSE_CODE);
326: CURL_INF(CURL_INT, OS_ERRNO);
327:
328: CURL_INF(CURL_DOUBLE, NAMELOOKUP_TIME);
1.32 moko 329: CURL_INF(CURL_DOUBLE, APPCONNECT_TIME);
1.61 moko 330: CURL_INF(CURL_DOUBLE, PRETRANSFER_TIME);
331: CURL_INF(CURL_DOUBLE, STARTTRANSFER_TIME);
1.32 moko 332: CURL_INF(CURL_DOUBLE, CONNECT_TIME);
1.61 moko 333: CURL_INF(CURL_DOUBLE, TOTAL_TIME);
334:
1.32 moko 335: CURL_INF(CURL_DOUBLE, CONTENT_LENGTH_DOWNLOAD);
336: CURL_INF(CURL_DOUBLE, CONTENT_LENGTH_UPLOAD);
337: CURL_INF(CURL_INT, HEADER_SIZE);
1.61 moko 338: CURL_INF(CURL_INT, REQUEST_SIZE);
339: CURL_INF(CURL_DOUBLE, SIZE_DOWNLOAD);
340: CURL_INF(CURL_DOUBLE, SIZE_UPLOAD);
341: CURL_INF(CURL_DOUBLE, SPEED_DOWNLOAD);
342: CURL_INF(CURL_DOUBLE, SPEED_UPLOAD);
343:
1.32 moko 344: CURL_INF(CURL_INT, NUM_CONNECTS);
345: CURL_INF(CURL_STRING, PRIMARY_IP);
1.61 moko 346: CURL_INF(CURL_INT, HTTPAUTH_AVAIL);
1.32 moko 347: CURL_INF(CURL_INT, PROXYAUTH_AVAIL);
348: CURL_INF(CURL_INT, REDIRECT_COUNT);
349: CURL_INF(CURL_DOUBLE, REDIRECT_TIME);
350: CURL_INF(CURL_STRING, REDIRECT_URL);
351: CURL_INF(CURL_INT, SSL_VERIFYRESULT);
352: }
353:
354: } *curl_infos=0;
355:
1.1 misha 356: static const char *curl_urlencode(const String &s, Request& r){
357: if(options().charset){
358: Temp_client_charset temp(r.charsets, *options().charset);
359: return s.untaint_and_transcode_cstr(String::L_URI, &r.charsets);
360: } else
361: return s.untaint_cstr(String::L_URI);
362: }
363:
364: static struct curl_slist *curl_headers(HashStringValue *value_hash, Request& r) {
365: struct curl_slist *slist=NULL;
366:
367: for(HashStringValue::Iterator i(*value_hash); i; i.next() ){
368: String header =
1.10 moko 369: String(pa_http_safe_header_name(capitalize(i.key().cstr())), String::L_AS_IS)
1.1 misha 370: << ": "
1.10 moko 371: << String(i.value()->as_string(), String::L_HTTP_HEADER);
1.1 misha 372:
373: slist=f_curl_slist_append(slist, curl_urlencode(header, r));
374: }
375: return slist;
376: }
377:
1.4 misha 378: static const char* curl_transcode(const String &s, Request& r){
379: return options().charset ? Charset::transcode(s.cstr(), r.charsets.source(), *options().charset).cstr() : s.cstr();
380: }
381:
382: static void curl_form(HashStringValue *value_hash, Request& r){
383: struct curl_httppost *f_last=0;
384: for(HashStringValue::Iterator i(*value_hash); i; i.next() ){
385: const char *key = curl_transcode(String(i.key().cstr()), r);
386: if(const String* svalue = i.value()->get_string()){
387: // string
388: f_curl_formadd(&options().f_post, &f_last,
389: CURLFORM_PTRNAME, key,
390: CURLFORM_PTRCONTENTS, curl_transcode(String(svalue->cstr()), r),
391: CURLFORM_END);
392: } else if(Table* tvalue = i.value()->get_table()){
393: // table
394: for(size_t t = 0; t < tvalue->count(); t++) {
395: f_curl_formadd(&options().f_post, &f_last,
396: CURLFORM_PTRNAME, key,
397: CURLFORM_PTRCONTENTS, curl_transcode(String(tvalue->get(t)->get(0)->cstr()), r),
398: CURLFORM_END);
399: }
400: } else if(VFile* fvalue=static_cast<VFile *>(i.value()->as("file"))){
401: // file
402: f_curl_formadd(&options().f_post, &f_last,
403: CURLFORM_PTRNAME, key,
404: CURLFORM_BUFFER, curl_transcode(String(fvalue->fields().get("name")->as_string(), String::L_FILE_SPEC), r),
405: CURLFORM_BUFFERLENGTH, (long)fvalue->value_size(),
406: CURLFORM_BUFFERPTR, fvalue->value_ptr(),
407: CURLFORM_CONTENTTYPE, fvalue->fields().get("content-type")->as_string().taint_cstr(String::L_URI),
408: CURLFORM_END);
409: } else {
1.56 moko 410: 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 411: }
412: }
413: }
414:
1.18 moko 415: static const char *curl_check_file(const String &file_spec){
416: const char *file_spec_cstr=file_spec.taint_cstr(String::L_FILE_SPEC);
417: struct stat finfo;
1.49 moko 418: if(pa_stat(file_spec_cstr, &finfo)==0)
1.18 moko 419: check_safe_mode(finfo, file_spec, file_spec_cstr);
420: return file_spec_cstr;
421: }
422:
1.56 moko 423: static long curl_http_version(const String &name){
424: if(name.is_empty()) return CURL_HTTP_VERSION_NONE;
425:
426: if(name == "1.0") return CURL_HTTP_VERSION_1_0;
427: if(name == "1.1") return CURL_HTTP_VERSION_1_1;
428: if(name == "2") return CURL_HTTP_VERSION_2;
429: if(name == "2.0") return CURL_HTTP_VERSION_2_0;
430:
431: const char *sname = str_upper(name.cstr());
432: if(!strcmp(sname,"2TLS")) return CURL_HTTP_VERSION_2TLS;
433: if(!strcmp(sname,"2ONLY")) return CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE;
434: throw Exception("curl", &name, "invalid http_version option value");
435: }
436:
437: static const char *curl_http_version_name(long value){
438: if(value == CURL_HTTP_VERSION_NONE) return "none";
439: if(value == CURL_HTTP_VERSION_1_0) return "1.0";
440: if(value == CURL_HTTP_VERSION_1_1) return "1.1";
441: if(value == CURL_HTTP_VERSION_2) return "2";
442: throw Exception("curl", 0, "invalid http version '%d' in info", value);
443: }
444:
1.1 misha 445: static void curl_setopt(HashStringValue::key_type key, HashStringValue::value_type value, Request& r) {
446: CurlOption *opt=curl_options->get(key);
447:
448: if(opt==0)
449: throw Exception("curl", 0, "called with invalid option '%s'", key.cstr());
450:
451: CURLcode res = CURLE_OK;
1.44 moko 452: Value &v=r.process(*value);
1.1 misha 453:
454: switch (opt->type){
455: case CurlOption::CURL_STRING:{
456: // string curl option
457: const char *value_str=v.as_string().cstr();
458: res=f_curl_easy_setopt(curl(), opt->id, value_str);
459: break;
460: }
461: case CurlOption::CURL_URLENCODE:{
462: // url-encoded string curl option
463: const char *value_str=curl_urlencode(v.as_string(), r);
464: res=f_curl_easy_setopt(curl(), opt->id, value_str);
465: break;
466: }
1.4 misha 467: case CurlOption::CURL_URL:{
468: // url-encoded string curl_url option
1.5 misha 469: const String url = v.as_string();
470: if(!url.starts_with("http://") && !url.starts_with("https://"))
471: throw Exception("curl", 0, "failed to set option '%s': invalid url scheme '%s'", key.cstr(), url.cstr());
1.39 moko 472: options().url=curl_urlencode(url, r);
473: res=f_curl_easy_setopt(curl(), opt->id, options().url);
1.4 misha 474: break;
475: }
1.1 misha 476: case CurlOption::CURL_INT:{
1.2 misha 477: // integer curl option
478: long value_int=(long)v.as_double();
1.1 misha 479: res=f_curl_easy_setopt(curl(), opt->id, value_int);
480: break;
481: }
1.60 moko 482: case CurlOption::CURL_NO_BODY:{
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().no_body=value_int != 0;
487: break;
488: }
1.1 misha 489: case CurlOption::CURL_POST:{
1.57 moko 490: // integer curl option
491: long value_int=(long)v.as_double();
492: res=f_curl_easy_setopt(curl(), opt->id, value_int);
493: options().is_post=value_int != 0;
494: break;
495: }
496: case CurlOption::CURL_POSTFIELDS:{
1.1 misha 497: // http post curl option
498: if(v.get_string()){
1.2 misha 499: if( (res=f_curl_easy_setopt(curl(), CURLOPT_POSTFIELDSIZE, -1L)) == CURLE_OK )
1.1 misha 500: res=f_curl_easy_setopt(curl(), opt->id, curl_urlencode(v.as_string(), r));
501: } else {
502: VFile *file=v.as_vfile(String::L_AS_IS);
1.2 misha 503: if( (res=f_curl_easy_setopt(curl(), CURLOPT_POSTFIELDSIZE, (long)file->value_size())) == CURLE_OK )
1.1 misha 504: res=f_curl_easy_setopt(curl(), opt->id, file->value_ptr());
505: }
1.57 moko 506: options().has_content_length=true;
1.1 misha 507: break;
508: }
1.4 misha 509: case CurlOption::CURL_FORM:{
1.48 moko 510: HashStringValue *value_hash = v.as_hash("failed to set option 'httppost': value");
1.4 misha 511: if(value_hash){
512: curl_form(value_hash, r);
1.48 moko 513: } else {
1.57 moko 514: if(options().f_post)
515: f_curl_formfree(options().f_post);
1.4 misha 516: options().f_post = 0;
1.5 misha 517: }
1.4 misha 518: res=f_curl_easy_setopt(curl(), CURLOPT_HTTPPOST, foptions->f_post);
1.57 moko 519: options().has_content_length=true;
1.4 misha 520: break;
521: }
1.1 misha 522: case CurlOption::CURL_HEADERS:{
523: // http headers curl option
1.48 moko 524: HashStringValue *value_hash=v.as_hash("failed to set option 'httpheader': value");
1.1 misha 525: res=f_curl_easy_setopt(curl(), opt->id, value_hash ? curl_headers(value_hash, r) : 0);
526: break;
527: }
528: case CurlOption::CURL_FILE:{
529: // file-spec curl option
1.65 moko 530: const char *file_spec_cstr=curl_check_file(r.full_disk_path(v.as_string()));
1.18 moko 531: res=f_curl_easy_setopt(curl(), opt->id, file_spec_cstr);
1.1 misha 532: break;
533: }
1.16 moko 534: case CurlOption::CURL_STDERR:{
535: // verbose output redirection from stderr to file curl option
1.65 moko 536: const char *file_spec_cstr=curl_check_file(r.full_disk_path(v.as_string()));
1.53 moko 537: FILE *f_stderr=options().f_stderr=pa_fopen(file_spec_cstr, "wt");
1.19 moko 538: if (f_stderr){
539: res=f_curl_easy_setopt(curl(), opt->id, f_stderr);
1.16 moko 540: } else {
1.18 moko 541: throw Exception("curl", 0, "failed to set option '%s': unable to open file '%s'", key.cstr(), file_spec_cstr);
1.16 moko 542: }
543: break;
544: }
1.56 moko 545: case CurlOption::CURL_HTTP_VERSION:{
546: // http protocol version name curl option
547: long value_int=curl_http_version(v.as_string());
548: res=f_curl_easy_setopt(curl(), opt->id, value_int);
549: break;
550: }
1.1 misha 551: case CurlOption::PARSER_LIBRARY:{
552: // 'library' parser option
1.41 moko 553: if(!curl_linked){
1.1 misha 554: curl_library=v.as_string().taint_cstr(String::L_FILE_SPEC);
555: } else
1.16 moko 556: throw Exception("curl", 0, "failed to set option '%s': already loaded", key.cstr());
1.1 misha 557: break;
558: }
559: case CurlOption::PARSER_NAME:{
560: // 'name' parser option
1.12 misha 561: options().filename=&v.as_string();
1.1 misha 562: break;
563: }
564: case CurlOption::PARSER_CONTENT_TYPE:{
565: // 'content-type' parser option
566: options().content_type=&v.as_string();
567: break;
568: }
569: case CurlOption::PARSER_MODE:{
570: // 'mode' parser option
1.12 misha 571: options().is_text=VFile::is_text_mode(v.as_string());
1.1 misha 572: break;
573: }
574: case CurlOption::PARSER_CHARSET:{
1.30 moko 575: // 'charset' parser option should be processed before other options
1.1 misha 576: break;
577: }
1.4 misha 578: case CurlOption::PARSER_RESPONSE_CHARSET:{
1.12 misha 579: // 'response-charset' parser option
1.42 moko 580: options().response_charset=&pa_charsets.get(v.as_string());
1.4 misha 581: break;
582: }
1.1 misha 583: }
584:
585: if(res != CURLE_OK)
586: throw Exception("curl", 0, "failed to set option '%s': %s", key.cstr(), f_curl_easy_strerror(res));
587: }
588:
1.3 misha 589: static void _curl_options(Request& r, MethodParams& params){
1.1 misha 590: if(curl_options==0)
591: curl_options=new CurlOptionHash();
592:
1.30 moko 593: if(HashStringValue* options_hash=params.as_hash(0)){
594: if(Value* value=options_hash->get("charset")){
595: // charset should be handled first as params may require transcode
1.44 moko 596: Value &v=r.process(*value);
1.42 moko 597: options().charset=&pa_charsets.get(v.as_string());
1.30 moko 598: }
599: options_hash->for_each<Request&>(curl_setopt, r);
600: }
1.1 misha 601: }
602:
1.32 moko 603: #define CURL_GETINFO(arg) \
604: if((res=f_curl_easy_getinfo(curl(), info->id, &arg)) != CURLE_OK){ \
1.58 moko 605: if (fail_on_error) \
606: throw Exception("curl", 0, "failed to get %s info: %s", key.cstr(), f_curl_easy_strerror(res)); \
607: return 0; \
1.32 moko 608: }
609:
1.58 moko 610: static Value *curl_getinfo(const String::Body &key, CurlInfo *info, bool fail_on_error=false) {
1.32 moko 611: CURLcode res;
612: switch (info->type){
613: case CurlInfo::CURL_STRING:{
614: char *str=0;
615: CURL_GETINFO(str);
1.33 moko 616: return new VString(str ? *new String(pa_strdup(str), String::L_TAINTED) : String::Empty);
1.32 moko 617: }
618: case CurlInfo::CURL_INT:{
619: long l=0;
620: CURL_GETINFO(l);
621: return new VInt(l);
622: }
623: case CurlInfo::CURL_DOUBLE:{
624: double d=0;
625: CURL_GETINFO(d);
626: return new VDouble(d);
627: }
1.56 moko 628: case CurlInfo::CURL_HTTP_VERSION:{
629: long l=0;
630: CURL_GETINFO(l);
631: return new VString(*new String(curl_http_version_name(l), String::L_TAINTED));
632: }
1.32 moko 633: }
634: return VVoid::get();
635: }
636:
637: static void _curl_info(Request& r, MethodParams& params){
638: if(curl_infos==0)
639: curl_infos=new CurlInfoHash();
640: if(params.count()==1){
641: const String &name=params.as_string(0, "name must be string");
1.58 moko 642: CurlInfo *info=curl_infos->get(name);
643: if(info==0)
644: throw Exception("curl", 0, "called with invalid parameter '%s'", name.cstr());
1.59 moko 645: r.write(*curl_getinfo(name, info, true));
1.32 moko 646: } else {
647: VHash& result=*new VHash;
648: for(CurlInfoHash::Iterator i(*curl_infos); i; i.next() ){
1.59 moko 649: Value *value=curl_getinfo(i.key(), i.value());
1.58 moko 650: if(value)
651: result.get_hash()->put(i.key(), value);
1.32 moko 652: }
1.46 moko 653: r.write(result);
1.32 moko 654: }
655: }
656:
1.1 misha 657: class Curl_buffer{
658: public:
659: char *buf;
660: size_t length;
661: size_t buf_size;
1.62 moko 662: HTTP_Headers& headers;
1.1 misha 663:
1.62 moko 664: Curl_buffer(HTTP_Headers& aheaders) : buf((char *)pa_malloc_atomic(MAX_STRING)), length(0), buf_size(MAX_STRING-1), headers(aheaders){}
1.50 moko 665:
666: void resize(size_t size){
667: buf_size=size;
668: buf=(char *)pa_realloc(buf, size+1);
669: }
1.1 misha 670: };
671:
672: static int curl_writer(char *data, size_t size, size_t nmemb, Curl_buffer *result){
673: if(result == 0)
674: return 0;
675:
676: size=size*nmemb;
677: if(size>0){
1.50 moko 678: size_t buf_required = result->length + size;
679: if(buf_required > result->buf_size)
1.51 moko 680: result->resize(buf_required <= result->headers.content_length ? (size_t)result->headers.content_length : result->buf_size*2 + size);
1.1 misha 681: memcpy(result->buf+result->length, data, size);
682: result->length += size;
683: }
684: return size;
685: }
686:
1.62 moko 687: static int curl_header(char *data, size_t size, size_t nmemb, HTTP_Headers *result){
1.1 misha 688: if(result == 0)
689: return 0;
690:
691: size=size*nmemb;
692: if(size>0){
1.47 moko 693: char *header=pa_strdup(data, size);
694: if(!pa_strncasecmp(header, "HTTP/") && !strchr(header, ':')){
695: // response code, clearing possible headers from previous requests
696: result->clear();
697: } else {
698: result->add_header(header);
1.60 moko 699: if(result->content_length>pa_file_size_limit && !options().no_body)
1.50 moko 700: return 0;
1.47 moko 701: }
1.1 misha 702: }
703: return size;
704: }
705:
706: #define CURL_SETOPT(option, arg, message) \
707: if( (res=f_curl_easy_setopt(curl(), option, arg)) != CURLE_OK){ \
708: throw Exception("curl", 0, "failed to set " message ": %s", f_curl_easy_strerror(res)); \
709: }
710:
711: static void _curl_load_action(Request& r, MethodParams& params){
712: if(params.count()==1)
1.3 misha 713: _curl_options(r, params);
1.1 misha 714:
715: CURLcode res;
716:
717: // we need a container for headers as VFile fields can be put only after VFile.set
1.62 moko 718: HTTP_Headers response;
1.1 misha 719: CURL_SETOPT(CURLOPT_HEADERFUNCTION, curl_header, "curl header function");
1.24 misha 720: CURL_SETOPT(CURLOPT_WRITEHEADER, &response, "curl header buffer");
1.1 misha 721:
1.50 moko 722: Curl_buffer body(response);
723: CURL_SETOPT(CURLOPT_WRITEFUNCTION, curl_writer, "curl writer function");
724: CURL_SETOPT(CURLOPT_WRITEDATA, &body, "curl write buffer");
725:
1.57 moko 726: if(options().is_post && !options().has_content_length){
727: // libcurl bug walkaround. Prior to 7.38 (Debian Jessie) curl passed Content-length: -1
728: // after that no Content-length header is passed, that hangs request to nginx.
729: CURL_SETOPT(CURLOPT_POSTFIELDSIZE, 0, "post content-length");
730: }
731:
1.63 moko 732: ALTER_EXCEPTION_SOURCE(res=f_curl_easy_perform(curl()), new String(options().url));
733: if(res != CURLE_OK){
1.15 moko 734: const char *ex_type = 0;
1.4 misha 735: switch(res){
736: case CURLE_OPERATION_TIMEDOUT:
737: ex_type = "curl.timeout"; break;
738: case CURLE_COULDNT_RESOLVE_HOST:
739: ex_type = "curl.host"; break;
740: case CURLE_COULDNT_CONNECT:
741: ex_type = "curl.connect"; break;
742: case CURLE_HTTP_RETURNED_ERROR:
743: ex_type = "curl.status"; break;
744: case CURLE_SSL_CONNECT_ERROR:
745: case CURLE_SSL_CERTPROBLEM:
746: case CURLE_SSL_CIPHER:
747: case CURLE_SSL_CACERT:
748: case CURLE_SSL_ENGINE_INITFAILED:
749: ex_type = "curl.ssl"; break;
1.50 moko 750: case CURLE_WRITE_ERROR:
1.64 moko 751: check_file_size(response.content_length, new String(options().url)); break;
1.31 moko 752: default: break;
1.4 misha 753: }
1.63 moko 754: throw Exception( PA_DEFAULT(ex_type, "curl.fail"), new String(options().url), "%s", f_curl_easy_strerror(res));
1.1 misha 755: }
756:
757: // assure trailing zero
758: body.buf[body.length]=0;
759:
1.4 misha 760: VFile& result=*new VFile;
761:
1.8 moko 762: Charset *asked_charset = options().response_charset;
1.38 moko 763: if (!asked_charset && !response.content_type.is_empty())
764: asked_charset=detect_charset(response.content_type.cstr());
765:
766: if(options().is_text)
1.42 moko 767: asked_charset=pa_charsets.checkBOM(body.buf, body.length, asked_charset);
1.38 moko 768:
769: if (!asked_charset)
770: asked_charset = options().charset;
1.1 misha 771:
772: if(options().is_text && asked_charset != 0){
773: String::C c=Charset::transcode(String::C(body.buf, body.length), *asked_charset, r.charsets.source());
774: body.buf=(char *)c.str;
775: body.length=c.length;
776: }
777:
1.38 moko 778: 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 779: const String *filename = PA_DEFAULT(options().filename, new String(options().url));
1.38 moko 780:
1.39 moko 781: result.set(true/*tainted*/, options().is_text, body.buf, body.length, filename, content_type ? new VString(*content_type) : 0, &r);
1.38 moko 782:
1.4 misha 783: long http_status = 0;
784: if(f_curl_easy_getinfo(curl(), CURLINFO_RESPONSE_CODE, &http_status) == CURLE_OK){
785: result.fields().put("status", new VInt(http_status));
786: }
787:
1.38 moko 788: VHash* vtables=new VHash;
789: result.fields().put("tables", vtables);
1.23 misha 790:
1.62 moko 791: for(Array_iterator<HTTP_Headers::Header> i(response.headers); i.has_next(); ){
792: HTTP_Headers::Header header=i.next();
1.24 misha 793:
794: if(asked_charset)
1.38 moko 795: header.transcode(*asked_charset, r.charsets.source());
796:
797: String &header_value=*new String(header.value, String::L_TAINTED);
798:
799: tables_update(vtables->hash(), header.name, header_value);
800: result.fields().put(header.name, new VString(header_value));
1.1 misha 801: }
802:
1.38 moko 803: // filling $.cookies
804: if(Value *vcookies=vtables->hash().get("SET-COOKIE"))
805: result.fields().put(HTTP_COOKIES_NAME, new VTable(parse_cookies(r, vcookies->get_table())));
1.23 misha 806:
1.46 moko 807: r.write(result);
1.1 misha 808: }
809:
810: static void _curl_load(Request& r, MethodParams& params){
811: fcurl ? _curl_load_action(r, params) : temp_curl(_curl_load_action, r, params);
812: }
813:
814: // constructor
815: MCurl::MCurl(): Methoded("curl") {
816: add_native_method("session", Method::CT_STATIC, _curl_session, 1, 1);
1.4 misha 817: add_native_method("version", Method::CT_STATIC, _curl_version, 0, 0);
1.3 misha 818: add_native_method("options", Method::CT_STATIC, _curl_options, 1, 1);
1.32 moko 819: add_native_method("info", Method::CT_STATIC, _curl_info, 0, 1);
1.1 misha 820: add_native_method("load", Method::CT_STATIC, _curl_load, 0, 1);
1.3 misha 821: }
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